From 490cda5a3c82c4a6a0bbdffe783eb48aec25511a Mon Sep 17 00:00:00 2001 From: Giulio Benetti Date: Wed, 18 Jul 2018 16:23:57 +0200 Subject: drm/sun4i: Handle DRM_BUS_FLAG_PIXDATA_*EDGE checking if panel is used. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Handle both positive and negative dclk polarity, according to bus_flags, taking care of this: On A20 and similar SoCs, the only way to achieve Positive Edge (Rising Edge), is setting dclk clock phase to 2/3(240°). By default TCON works in Negative Edge(Falling Edge), this is why phase is set to 0 in that case. Unfortunately there's no way to logically invert dclk through IO_POL register. The only acceptable way to work, triple checked with scope, is using clock phase set to 0° for Negative Edge and set to 240° for Positive Edge. On A33 and similar SoCs there would be a 90° phase option, but it divides also dclk by 2. This patch is a way to avoid quirks all around TCON and DOTCLOCK drivers for using A33 90° phase divided by 2 and consequently increase code complexity. Check if panel is used. TCON can also handle VGA DAC, then panel could be empty. Signed-off-by: Giulio Benetti Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20180718142357.120998-1-giulio.benetti@micronovasrl.com --- drivers/gpu/drm/sun4i/sun4i_tcon.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c index 3fb084f802e2..9bfb5b967d38 100644 --- a/drivers/gpu/drm/sun4i/sun4i_tcon.c +++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c @@ -17,6 +17,7 @@ #include #include #include +#include #include @@ -474,6 +475,33 @@ static void sun4i_tcon0_mode_set_rgb(struct sun4i_tcon *tcon, if (mode->flags & DRM_MODE_FLAG_PVSYNC) val |= SUN4I_TCON0_IO_POL_VSYNC_POSITIVE; + /* + * On A20 and similar SoCs, the only way to achieve Positive Edge + * (Rising Edge), is setting dclk clock phase to 2/3(240°). + * By default TCON works in Negative Edge(Falling Edge), + * this is why phase is set to 0 in that case. + * Unfortunately there's no way to logically invert dclk through + * IO_POL register. + * The only acceptable way to work, triple checked with scope, + * is using clock phase set to 0° for Negative Edge and set to 240° + * for Positive Edge. + * On A33 and similar SoCs there would be a 90° phase option, + * but it divides also dclk by 2. + * Following code is a way to avoid quirks all around TCON + * and DOTCLOCK drivers. + */ + if (!IS_ERR(tcon->panel)) { + struct drm_panel *panel = tcon->panel; + struct drm_connector *connector = panel->connector; + struct drm_display_info display_info = connector->display_info; + + if (display_info.bus_flags & DRM_BUS_FLAG_PIXDATA_POSEDGE) + clk_set_phase(tcon->dclk, 240); + + if (display_info.bus_flags & DRM_BUS_FLAG_PIXDATA_NEGEDGE) + clk_set_phase(tcon->dclk, 0); + } + regmap_update_bits(tcon->regs, SUN4I_TCON0_IO_POL_REG, SUN4I_TCON0_IO_POL_HSYNC_POSITIVE | SUN4I_TCON0_IO_POL_VSYNC_POSITIVE, val); -- cgit v1.2.3 From e527cd9e48e33e8caffc0b00a4f5bd1add0b3d09 Mon Sep 17 00:00:00 2001 From: Paul Kocialkowski Date: Thu, 19 Jul 2018 10:08:37 +0200 Subject: drm/sun4i: sun4i: Register quirks with the backend structure In prevision for introducing a new quirk that will be used at atomic plane check time, register the quirks structure with the backend structure. This way, it can easily be grabbed where needed. Signed-off-by: Paul Kocialkowski Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20180719080838.31598-1-paul.kocialkowski@bootlin.com --- drivers/gpu/drm/sun4i/sun4i_backend.c | 2 ++ drivers/gpu/drm/sun4i/sun4i_backend.h | 2 ++ 2 files changed, 4 insertions(+) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/sun4i/sun4i_backend.c b/drivers/gpu/drm/sun4i/sun4i_backend.c index d7950b52a1fd..e2f0d8fc3dde 100644 --- a/drivers/gpu/drm/sun4i/sun4i_backend.c +++ b/drivers/gpu/drm/sun4i/sun4i_backend.c @@ -876,6 +876,8 @@ static int sun4i_backend_bind(struct device *dev, struct device *master, : SUN4I_BACKEND_MODCTL_OUT_LCD0)); } + backend->quirks = quirks; + return 0; err_disable_ram_clk: diff --git a/drivers/gpu/drm/sun4i/sun4i_backend.h b/drivers/gpu/drm/sun4i/sun4i_backend.h index 4caee0392fa4..ad6609323f0e 100644 --- a/drivers/gpu/drm/sun4i/sun4i_backend.h +++ b/drivers/gpu/drm/sun4i/sun4i_backend.h @@ -187,6 +187,8 @@ struct sun4i_backend { /* Protects against races in the frontend teardown */ spinlock_t frontend_lock; bool frontend_teardown; + + const struct sun4i_backend_quirks *quirks; }; static inline struct sun4i_backend * -- cgit v1.2.3 From dcf496a6a608733ef18a2f757b55111df9eadca6 Mon Sep 17 00:00:00 2001 From: Paul Kocialkowski Date: Thu, 19 Jul 2018 10:08:38 +0200 Subject: drm/sun4i: sun4i: Introduce a quirk for lowest plane alpha support Not all sunxi platforms with the first version of the Display Engine support an alpha component on the plane with the lowest z position (as in: lowest z-pos), that gets blended with the background color. In particular, the A13 is known to have this limitation. However, it was recently discovered that the A20 and A33 are capable of having alpha on their lowest plane. Thus, this introduces a specific quirk to indicate such support, per-platform. Since this was not tested on sun4i and sun6i platforms, a conservative approach is kept and this feature is not supported. Signed-off-by: Paul Kocialkowski Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20180719080838.31598-2-paul.kocialkowski@bootlin.com --- drivers/gpu/drm/sun4i/sun4i_backend.c | 42 +++++++++++++++++++++++------------ drivers/gpu/drm/sun4i/sun4i_backend.h | 1 - 2 files changed, 28 insertions(+), 15 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/sun4i/sun4i_backend.c b/drivers/gpu/drm/sun4i/sun4i_backend.c index e2f0d8fc3dde..f6d8d0d4d5bf 100644 --- a/drivers/gpu/drm/sun4i/sun4i_backend.c +++ b/drivers/gpu/drm/sun4i/sun4i_backend.c @@ -34,6 +34,9 @@ struct sun4i_backend_quirks { /* backend <-> TCON muxing selection done in backend */ bool needs_output_muxing; + + /* alpha at the lowest z position is not always supported */ + bool supports_lowest_plane_alpha; }; static const u32 sunxi_rgb2yuv_coef[12] = { @@ -457,12 +460,14 @@ static int sun4i_backend_atomic_check(struct sunxi_engine *engine, struct drm_crtc_state *crtc_state) { struct drm_plane_state *plane_states[SUN4I_BACKEND_NUM_LAYERS] = { 0 }; + struct sun4i_backend *backend = engine_to_sun4i_backend(engine); struct drm_atomic_state *state = crtc_state->state; struct drm_device *drm = state->dev; struct drm_plane *plane; unsigned int num_planes = 0; unsigned int num_alpha_planes = 0; unsigned int num_frontend_planes = 0; + unsigned int num_alpha_planes_max = 1; unsigned int num_yuv_planes = 0; unsigned int current_pipe = 0; unsigned int i; @@ -526,33 +531,40 @@ static int sun4i_backend_atomic_check(struct sunxi_engine *engine, * the layer with the highest priority. * * The second step is the actual alpha blending, that takes - * the two pipes as input, and uses the eventual alpha + * the two pipes as input, and uses the potential alpha * component to do the transparency between the two. * - * This two steps scenario makes us unable to guarantee a + * This two-step scenario makes us unable to guarantee a * robust alpha blending between the 4 layers in all * situations, since this means that we need to have one layer * with alpha at the lowest position of our two pipes. * - * However, we cannot even do that, since the hardware has a - * bug where the lowest plane of the lowest pipe (pipe 0, - * priority 0), if it has any alpha, will discard the pixel - * entirely and just display the pixels in the background - * color (black by default). + * However, we cannot even do that on every platform, since + * the hardware has a bug where the lowest plane of the lowest + * pipe (pipe 0, priority 0), if it has any alpha, will + * discard the pixel data entirely and just display the pixels + * in the background color (black by default). * - * This means that we effectively have only three valid - * configurations with alpha, all of them with the alpha being - * on pipe1 with the lowest position, which can be 1, 2 or 3 - * depending on the number of planes and their zpos. + * This means that on the affected platforms, we effectively + * have only three valid configurations with alpha, all of + * them with the alpha being on pipe1 with the lowest + * position, which can be 1, 2 or 3 depending on the number of + * planes and their zpos. */ - if (num_alpha_planes > SUN4I_BACKEND_NUM_ALPHA_LAYERS) { + + /* For platforms that are not affected by the issue described above. */ + if (backend->quirks->supports_lowest_plane_alpha) + num_alpha_planes_max++; + + if (num_alpha_planes > num_alpha_planes_max) { DRM_DEBUG_DRIVER("Too many planes with alpha, rejecting...\n"); return -EINVAL; } /* We can't have an alpha plane at the lowest position */ - if (plane_states[0]->fb->format->has_alpha || - (plane_states[0]->alpha != DRM_BLEND_ALPHA_OPAQUE)) + if (!backend->quirks->supports_lowest_plane_alpha && + (plane_states[0]->fb->format->has_alpha || + (plane_states[0]->alpha != DRM_BLEND_ALPHA_OPAQUE))) return -EINVAL; for (i = 1; i < num_planes; i++) { @@ -937,9 +949,11 @@ static const struct sun4i_backend_quirks sun6i_backend_quirks = { static const struct sun4i_backend_quirks sun7i_backend_quirks = { .needs_output_muxing = true, + .supports_lowest_plane_alpha = true, }; static const struct sun4i_backend_quirks sun8i_a33_backend_quirks = { + .supports_lowest_plane_alpha = true, }; static const struct sun4i_backend_quirks sun9i_backend_quirks = { diff --git a/drivers/gpu/drm/sun4i/sun4i_backend.h b/drivers/gpu/drm/sun4i/sun4i_backend.h index ad6609323f0e..e3d4c6035eb2 100644 --- a/drivers/gpu/drm/sun4i/sun4i_backend.h +++ b/drivers/gpu/drm/sun4i/sun4i_backend.h @@ -167,7 +167,6 @@ #define SUN4I_BACKEND_PIPE_OFF(p) (0x5000 + (0x400 * (p))) #define SUN4I_BACKEND_NUM_LAYERS 4 -#define SUN4I_BACKEND_NUM_ALPHA_LAYERS 1 #define SUN4I_BACKEND_NUM_FRONTEND_LAYERS 1 #define SUN4I_BACKEND_NUM_YUV_PLANES 1 -- cgit v1.2.3 From 79556df293b2efbb3ccebb6db02120d62e348b44 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Tue, 17 Jul 2018 10:57:50 +0100 Subject: drm/i915/gtt: Enable full-ppgtt by default everywhere We should we have all the kinks worked out and full-ppgtt now works reliably on gen7 (Ivybridge, Valleyview/Baytrail and Haswell). If we can let userspace have full control over their own ppgtt, it makes softpinning far more effective, in turn making GPU dispatch far more efficient by virtue of better mm segregation. On the other hand, switching over to a different GTT for every client does incur noticeable overhead, but only for very lightweight tasks. Signed-off-by: Chris Wilson Cc: Joonas Lahtinen Cc: Mika Kuoppala Cc: Matthew Auld Reviewed-by: Joonas Lahtinen Cc: Jason Ekstrand Cc: Kenneth Graunke Acked-by: Kenneth Graunke Link: https://patchwork.freedesktop.org/patch/msgid/20180717095751.1034-1-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/i915_gem_gtt.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index 3d75f2bb5623..dd09d4d8b0ed 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -179,13 +179,11 @@ int intel_sanitize_enable_ppgtt(struct drm_i915_private *dev_priv, return 0; } - if (HAS_LOGICAL_RING_CONTEXTS(dev_priv)) { - if (has_full_48bit_ppgtt) - return 3; + if (has_full_48bit_ppgtt) + return 3; - if (has_full_ppgtt) - return 2; - } + if (has_full_ppgtt) + return 2; return 1; } -- cgit v1.2.3 From 5f9c4f95bed24c8a8ad9258ee120a910876f6eed Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Tue, 17 Jul 2018 10:57:51 +0100 Subject: drm/i915/gtt: Full ppgtt everywhere, no excuses MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit We believe we have all the kinks worked out, even for the early Valleyview devices, for whom we currently disable all ppgtt. References: 62942ed7279d ("drm/i915/vlv: disable PPGTT on early revs v3") Signed-off-by: Chris Wilson Cc: Ville Syrjälä Cc: Joonas Lahtinen Reviewed-by: Joonas Lahtinen Acked-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20180717095751.1034-2-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/i915_gem_gtt.c | 6 ------ 1 file changed, 6 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index dd09d4d8b0ed..f02f7848305d 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -173,12 +173,6 @@ int intel_sanitize_enable_ppgtt(struct drm_i915_private *dev_priv, return 0; } - /* Early VLV doesn't have this */ - if (IS_VALLEYVIEW(dev_priv) && dev_priv->drm.pdev->revision < 0xb) { - DRM_DEBUG_DRIVER("disabling PPGTT on pre-B3 step VLV\n"); - return 0; - } - if (has_full_48bit_ppgtt) return 3; -- cgit v1.2.3 From 516a49cc19467e298d08a404f73a6e311f4548d1 Mon Sep 17 00:00:00 2001 From: Azhar Shaikh Date: Fri, 6 Jul 2018 11:37:30 -0700 Subject: drm/i915: Fix assert_plane() warning on bootup with external display MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On KBL, WHL RVPs, booting up with an external display connected, triggers below warning, when the BiOS brings up the external display too. This warning is not seen during hotplug. [ 3.615226] ------------[ cut here ]------------ [ 3.619829] plane 1A assertion failure (expected on, current off) [ 3.632039] WARNING: CPU: 2 PID: 354 at drivers/gpu/drm/i915/intel_display.c:1294 assert_plane+0x71/0xbb [ 3.633920] iwlwifi 0000:00:14.3: loaded firmware version 38.c0e03d94.0 op_mode iwlmvm [ 3.647157] Modules linked in: iwlwifi cfg80211 btusb btrtl btbcm btintel bluetooth ecdh_generic [ 3.647163] CPU: 2 PID: 354 Comm: frecon Not tainted 4.17.0-rc7-50176-g655af12d39c2 #3 [ 3.647165] Hardware name: Intel Corporation CoffeeLake Client Platform/WhiskeyLake U DDR4 ERB, BIOS CNLSFWR1.R00.X140.B00.1804040304 04/04/2018 [ 3.684509] RIP: 0010:assert_plane+0x71/0xbb [ 3.764451] Call Trace: [ 3.766888] intel_atomic_commit_tail+0xa97/0xb77 [ 3.771569] intel_atomic_commit+0x26a/0x279 [ 3.771572] drm_atomic_helper_set_config+0x5c/0x76 [ 3.780670] __drm_mode_set_config_internal+0x66/0x109 [ 3.780672] drm_mode_setcrtc+0x4c9/0x5cc [ 3.780674] ? drm_mode_getcrtc+0x162/0x162 [ 3.789774] ? drm_mode_getcrtc+0x162/0x162 [ 3.798108] drm_ioctl_kernel+0x8d/0xe4 [ 3.801926] drm_ioctl+0x27d/0x368 [ 3.805311] ? drm_mode_getcrtc+0x162/0x162 [ 3.805314] ? selinux_file_ioctl+0x14e/0x199 [ 3.805317] vfs_ioctl+0x21/0x2f [ 3.813812] do_vfs_ioctl+0x491/0x4b4 [ 3.813813] ? security_file_ioctl+0x37/0x4b [ 3.813816] ksys_ioctl+0x55/0x75 [ 3.820672] __x64_sys_ioctl+0x1a/0x1e [ 3.820674] do_syscall_64+0x51/0x5f [ 3.820678] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 3.828221] RIP: 0033:0x7b5e04953967 [ 3.835504] RSP: 002b:00007fff2eafb6f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 3.835505] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007b5e04953967 [ 3.835505] RDX: 00007fff2eafb730 RSI: 00000000c06864a2 RDI: 000000000000000f [ 3.835506] RBP: 00007fff2eafb720 R08: 0000000000000000 R09: 0000000000000000 [ 3.835507] R10: 0000000000000070 R11: 0000000000000246 R12: 000000000000000f [ 3.879988] R13: 000056bc9dd7d210 R14: 00007fff2eafb730 R15: 00000000c06864a2 [ 3.887081] Code: 48 c7 c7 06 71 a5 be 84 c0 48 c7 c2 06 fd a3 be 48 89 f9 48 0f 44 ca 84 db 48 0f 45 d7 48 c7 c7 df d3 a4 be 31 c0 e8 af a0 c0 ff <0f> 0b eb 2b 48 c7 c7 06 fd a3 be 84 c0 48 c7 c2 06 71 a5 be 48 [ 3.905845] WARNING: CPU: 2 PID: 354 at drivers/gpu/drm/i915/intel_display.c:1294 assert_plane+0x71/0xbb [ 3.920964] ---[ end trace dac692f4ac46391a ]--- The warning is seen when mode_setcrtc() is called for pipeB during bootup and before we get a mode_setcrtc() for pipeA, while doing update_crtcs() in intel_atomic_commit_tail(). Now since, plane1A is still active after commit, update_crtcs() is done for pipeA and eventually update_plane() for plane1A. intel_plane_state->ctl for plane1A is not updated since set_modecrtc() is called for pipeB. So intel_plane_state->ctl for plane 1A will be 0x0. So doing an update_plane() for plane1A, will result in clearing PLANE_CTL_ENABLE bit, and hence the warning. To fix this warning, force all active planes to recompute their states in probe. Changes in v8: - Actually add Reviewed-by: Ville Syrjälä Changes in v7: - Move call to intel_initial_commit() after sanitize_watermarks() Otherwise the plane update will still consult potentially bogus watermarks we read out from the hardware. (Ville) - Carry Reviewed-by: Ville Syrjälä from v6 Changes in v6: - Handle EDEADLK for drm_atomic_get_crtc_state() and drm_atomic_add_affected_planes() - Remove optimization of calling intel_initial_commit() only when there is more than one active pipe in probe. - Avoid using intel_ types. Changes in v5: - Drop drm_modeset_lock_all_ctx() since locks will be taken later. Changes in v4: - Handle locking in intel_initial_commit() - Move the for loop inside intel_initial_commit() so that drm_atomic_commit() is called only once - Call intel_initial_commit() only for more than one active crtc on boot. - Save the return value of intel_initial_commit() and print a message in case of an error Changes in v3: - Add comments Changes in v2: - Force all planes to recompute their states.(Ville Syrjälä) - Update the commit message Signed-off-by: Azhar Shaikh Reviewed-by: Ville Syrjälä Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/1530902250-44583-1-git-send-email-azhar.shaikh@intel.com --- drivers/gpu/drm/i915/intel_display.c | 61 ++++++++++++++++++++++++++++++++++-- 1 file changed, 59 insertions(+), 2 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 8bd9080fce34..8719c1a9d1ce 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -15065,12 +15065,61 @@ static void intel_update_fdi_pll_freq(struct drm_i915_private *dev_priv) DRM_DEBUG_DRIVER("FDI PLL freq=%d\n", dev_priv->fdi_pll_freq); } +static int intel_initial_commit(struct drm_device *dev) +{ + struct drm_atomic_state *state = NULL; + struct drm_modeset_acquire_ctx ctx; + struct drm_crtc *crtc; + struct drm_crtc_state *crtc_state; + int ret = 0; + + state = drm_atomic_state_alloc(dev); + if (!state) + return -ENOMEM; + + drm_modeset_acquire_init(&ctx, 0); + +retry: + state->acquire_ctx = &ctx; + + drm_for_each_crtc(crtc, dev) { + crtc_state = drm_atomic_get_crtc_state(state, crtc); + if (IS_ERR(crtc_state)) { + ret = PTR_ERR(crtc_state); + goto out; + } + + if (crtc_state->active) { + ret = drm_atomic_add_affected_planes(state, crtc); + if (ret) + goto out; + } + } + + ret = drm_atomic_commit(state); + +out: + if (ret == -EDEADLK) { + drm_atomic_state_clear(state); + drm_modeset_backoff(&ctx); + goto retry; + } + + drm_atomic_state_put(state); + + drm_modeset_drop_locks(&ctx); + drm_modeset_acquire_fini(&ctx); + + return ret; +} + int intel_modeset_init(struct drm_device *dev) { struct drm_i915_private *dev_priv = to_i915(dev); struct i915_ggtt *ggtt = &dev_priv->ggtt; enum pipe pipe; struct intel_crtc *crtc; + int ret; dev_priv->modeset_wq = alloc_ordered_workqueue("i915_modeset", 0); @@ -15145,8 +15194,6 @@ int intel_modeset_init(struct drm_device *dev) INTEL_INFO(dev_priv)->num_pipes > 1 ? "s" : ""); for_each_pipe(dev_priv, pipe) { - int ret; - ret = intel_crtc_init(dev_priv, pipe); if (ret) { drm_mode_config_cleanup(dev); @@ -15202,6 +15249,16 @@ int intel_modeset_init(struct drm_device *dev) if (!HAS_GMCH_DISPLAY(dev_priv)) sanitize_watermarks(dev); + /* + * Force all active planes to recompute their states. So that on + * mode_setcrtc after probe, all the intel_plane_state variables + * are already calculated and there is no assert_plane warnings + * during bootup. + */ + ret = intel_initial_commit(dev); + if (ret) + DRM_DEBUG_KMS("Initial commit in probe failed.\n"); + return 0; } -- cgit v1.2.3 From f7a738fca03c8dae6a1b448393989cc9f612198d Mon Sep 17 00:00:00 2001 From: Paulo Zanoni Date: Wed, 11 Jul 2018 14:59:02 -0700 Subject: drm/i915/icl: compute the TBT PLL registers Use the hardcoded tables provided by our spec. v2: - SSC stays disabled. - Use intel_port_is_tc(). Cc: Anusha Srivatsa Reviewed-by: Rodrigo Vivi Signed-off-by: Paulo Zanoni Link: https://patchwork.freedesktop.org/patch/msgid/20180711215909.23945-2-paulo.r.zanoni@intel.com --- drivers/gpu/drm/i915/intel_dpll_mgr.c | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/intel_dpll_mgr.c b/drivers/gpu/drm/i915/intel_dpll_mgr.c index 058696b7d6c3..e046c4f668e0 100644 --- a/drivers/gpu/drm/i915/intel_dpll_mgr.c +++ b/drivers/gpu/drm/i915/intel_dpll_mgr.c @@ -2452,6 +2452,16 @@ static const struct skl_wrpll_params icl_dp_combo_pll_19_2MHz_values[] = { .pdiv = 0x1 /* 2 */, .kdiv = 1, .qdiv_mode = 0, .qdiv_ratio = 0}, }; +static const struct skl_wrpll_params icl_tbt_pll_24MHz_values = { + .dco_integer = 0x151, .dco_fraction = 0x4000, + .pdiv = 0x4 /* 5 */, .kdiv = 1, .qdiv_mode = 0, .qdiv_ratio = 0, +}; + +static const struct skl_wrpll_params icl_tbt_pll_19_2MHz_values = { + .dco_integer = 0x1A5, .dco_fraction = 0x7000, + .pdiv = 0x4 /* 5 */, .kdiv = 1, .qdiv_mode = 0, .qdiv_ratio = 0, +}; + static bool icl_calc_dp_combo_pll(struct drm_i915_private *dev_priv, int clock, struct skl_wrpll_params *pll_params) { @@ -2494,6 +2504,14 @@ static bool icl_calc_dp_combo_pll(struct drm_i915_private *dev_priv, int clock, return true; } +static bool icl_calc_tbt_pll(struct drm_i915_private *dev_priv, int clock, + struct skl_wrpll_params *pll_params) +{ + *pll_params = dev_priv->cdclk.hw.ref == 24000 ? + icl_tbt_pll_24MHz_values : icl_tbt_pll_19_2MHz_values; + return true; +} + static bool icl_calc_dpll_state(struct intel_crtc_state *crtc_state, struct intel_encoder *encoder, int clock, struct intel_dpll_hw_state *pll_state) @@ -2503,7 +2521,9 @@ static bool icl_calc_dpll_state(struct intel_crtc_state *crtc_state, struct skl_wrpll_params pll_params = { 0 }; bool ret; - if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) + if (intel_port_is_tc(dev_priv, encoder->port)) + ret = icl_calc_tbt_pll(dev_priv, clock, &pll_params); + else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) ret = cnl_ddi_calculate_wrpll(clock, dev_priv, &pll_params); else ret = icl_calc_dp_combo_pll(dev_priv, clock, &pll_params); -- cgit v1.2.3 From 35e900818e177d9ae34988d15461792582937924 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Fri, 20 Jul 2018 10:51:44 +0100 Subject: drm/i915: Suppress assertion for i915_ggtt_disable_guc MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Another step in the drv_module_reload fault-injection saga, is that we try to disable the guc twice. Probably. It's a little unclear exactly what is going on in the unload sequence that catches us out, so for the time being suppress the assertion to get the test re-enabled. Testcase: igt/drv_module_reload/basic-reload-inject Signed-off-by: Chris Wilson Cc: Michał Winiarski Cc: Michal Wajdeczko Acked-by: Michał Winiarski Link: https://patchwork.freedesktop.org/patch/msgid/20180720095144.5885-1-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/i915_gem_gtt.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index f02f7848305d..81a2c340c091 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -3654,6 +3654,10 @@ void i915_ggtt_enable_guc(struct drm_i915_private *i915) void i915_ggtt_disable_guc(struct drm_i915_private *i915) { + /* XXX Temporary pardon for error unload */ + if (i915->ggtt.invalidate == gen6_ggtt_invalidate) + return; + /* We should only be called after i915_ggtt_enable_guc() */ GEM_BUG_ON(i915->ggtt.invalidate != guc_ggtt_invalidate); -- cgit v1.2.3 From 900ccf30f9e112b508a61b228bf014e3bea14bc4 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Fri, 20 Jul 2018 11:19:10 +0100 Subject: drm/i915: Only force GGTT coherency w/a on required chipsets Not all chipsets have an internal buffer delaying the visibility of writes via the GGTT being visible by other physical paths, but we use a very heavy workaround for all. We only need to apply that workarounds to the chipsets we know suffer from the delay and the resulting coherency issue. Similarly, the same inconsistent coherency fouls up our ABI promise that a write into a mmap_gtt is immediately visible to others. Since the HW has made that a lie, let userspace know when that contract is broken. (Not that userspace would want to use mmap_gtt on those chipsets for other performance reasons...) Testcase: igt/drv_selftest/live_coherency Testcase: igt/gem_mmap_gtt/coherency Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=100587 Signed-off-by: Chris Wilson Cc: Joonas Lahtinen Reviewed-by: Tomasz Lis Reviewed-by: Tvrtko Ursulin Link: https://patchwork.freedesktop.org/patch/msgid/20180720101910.11153-1-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/i915_drv.c | 3 +++ drivers/gpu/drm/i915/i915_gem.c | 5 +++++ drivers/gpu/drm/i915/i915_pci.c | 10 ++++++++++ drivers/gpu/drm/i915/intel_device_info.h | 1 + include/uapi/drm/i915_drm.h | 22 ++++++++++++++++++++++ 5 files changed, 41 insertions(+) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 343e79a44abd..23e9a86cbc2a 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -441,6 +441,9 @@ static int i915_getparam_ioctl(struct drm_device *dev, void *data, case I915_PARAM_CS_TIMESTAMP_FREQUENCY: value = 1000 * INTEL_INFO(dev_priv)->cs_timestamp_frequency_khz; break; + case I915_PARAM_MMAP_GTT_COHERENT: + value = INTEL_INFO(dev_priv)->has_coherent_ggtt; + break; default: DRM_DEBUG("Unknown parameter %d\n", param->param); return -EINVAL; diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index fcc73a6ab503..8b52cb768a67 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -802,6 +802,11 @@ void i915_gem_flush_ggtt_writes(struct drm_i915_private *dev_priv) * that was!). */ + wmb(); + + if (INTEL_INFO(dev_priv)->has_coherent_ggtt) + return; + i915_gem_chipset_flush(dev_priv); intel_runtime_pm_get(dev_priv); diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c index 6a4d1388ad2d..e443fe44da3a 100644 --- a/drivers/gpu/drm/i915/i915_pci.c +++ b/drivers/gpu/drm/i915/i915_pci.c @@ -74,6 +74,7 @@ .unfenced_needs_alignment = 1, \ .ring_mask = RENDER_RING, \ .has_snoop = true, \ + .has_coherent_ggtt = false, \ GEN_DEFAULT_PIPEOFFSETS, \ GEN_DEFAULT_PAGE_SIZES, \ CURSOR_OFFSETS @@ -110,6 +111,7 @@ static const struct intel_device_info intel_i865g_info = { .has_gmch_display = 1, \ .ring_mask = RENDER_RING, \ .has_snoop = true, \ + .has_coherent_ggtt = true, \ GEN_DEFAULT_PIPEOFFSETS, \ GEN_DEFAULT_PAGE_SIZES, \ CURSOR_OFFSETS @@ -117,6 +119,7 @@ static const struct intel_device_info intel_i865g_info = { static const struct intel_device_info intel_i915g_info = { GEN3_FEATURES, PLATFORM(INTEL_I915G), + .has_coherent_ggtt = false, .cursor_needs_physical = 1, .has_overlay = 1, .overlay_needs_physical = 1, .hws_needs_physical = 1, @@ -178,6 +181,7 @@ static const struct intel_device_info intel_pineview_info = { .has_gmch_display = 1, \ .ring_mask = RENDER_RING, \ .has_snoop = true, \ + .has_coherent_ggtt = true, \ GEN_DEFAULT_PIPEOFFSETS, \ GEN_DEFAULT_PAGE_SIZES, \ CURSOR_OFFSETS @@ -220,6 +224,7 @@ static const struct intel_device_info intel_gm45_info = { .has_hotplug = 1, \ .ring_mask = RENDER_RING | BSD_RING, \ .has_snoop = true, \ + .has_coherent_ggtt = true, \ /* ilk does support rc6, but we do not implement [power] contexts */ \ .has_rc6 = 0, \ GEN_DEFAULT_PIPEOFFSETS, \ @@ -243,6 +248,7 @@ static const struct intel_device_info intel_ironlake_m_info = { .has_hotplug = 1, \ .has_fbc = 1, \ .ring_mask = RENDER_RING | BSD_RING | BLT_RING, \ + .has_coherent_ggtt = true, \ .has_llc = 1, \ .has_rc6 = 1, \ .has_rc6p = 1, \ @@ -287,6 +293,7 @@ static const struct intel_device_info intel_sandybridge_m_gt2_info = { .has_hotplug = 1, \ .has_fbc = 1, \ .ring_mask = RENDER_RING | BSD_RING | BLT_RING, \ + .has_coherent_ggtt = true, \ .has_llc = 1, \ .has_rc6 = 1, \ .has_rc6p = 1, \ @@ -347,6 +354,7 @@ static const struct intel_device_info intel_valleyview_info = { .has_aliasing_ppgtt = 1, .has_full_ppgtt = 1, .has_snoop = true, + .has_coherent_ggtt = false, .ring_mask = RENDER_RING | BSD_RING | BLT_RING, .display_mmio_offset = VLV_DISPLAY_BASE, GEN_DEFAULT_PAGE_SIZES, @@ -441,6 +449,7 @@ static const struct intel_device_info intel_cherryview_info = { .has_full_ppgtt = 1, .has_reset_engine = 1, .has_snoop = true, + .has_coherent_ggtt = false, .display_mmio_offset = VLV_DISPLAY_BASE, GEN_DEFAULT_PAGE_SIZES, GEN_CHV_PIPEOFFSETS, @@ -517,6 +526,7 @@ static const struct intel_device_info intel_skylake_gt4_info = { .has_full_48bit_ppgtt = 1, \ .has_reset_engine = 1, \ .has_snoop = true, \ + .has_coherent_ggtt = false, \ .has_ipc = 1, \ GEN9_DEFAULT_PAGE_SIZES, \ GEN_DEFAULT_PIPEOFFSETS, \ diff --git a/drivers/gpu/drm/i915/intel_device_info.h b/drivers/gpu/drm/i915/intel_device_info.h index 633f9fbf72ea..07e8364d1a8c 100644 --- a/drivers/gpu/drm/i915/intel_device_info.h +++ b/drivers/gpu/drm/i915/intel_device_info.h @@ -106,6 +106,7 @@ enum intel_platform { func(has_resource_streamer); \ func(has_runtime_pm); \ func(has_snoop); \ + func(has_coherent_ggtt); \ func(unfenced_needs_alignment); \ func(cursor_needs_physical); \ func(hws_needs_physical); \ diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h index 7f5634ce8e88..a4446f452040 100644 --- a/include/uapi/drm/i915_drm.h +++ b/include/uapi/drm/i915_drm.h @@ -529,6 +529,28 @@ typedef struct drm_i915_irq_wait { */ #define I915_PARAM_CS_TIMESTAMP_FREQUENCY 51 +/* + * Once upon a time we supposed that writes through the GGTT would be + * immediately in physical memory (once flushed out of the CPU path). However, + * on a few different processors and chipsets, this is not necessarily the case + * as the writes appear to be buffered internally. Thus a read of the backing + * storage (physical memory) via a different path (with different physical tags + * to the indirect write via the GGTT) will see stale values from before + * the GGTT write. Inside the kernel, we can for the most part keep track of + * the different read/write domains in use (e.g. set-domain), but the assumption + * of coherency is baked into the ABI, hence reporting its true state in this + * parameter. + * + * Reports true when writes via mmap_gtt are immediately visible following an + * lfence to flush the WCB. + * + * Reports false when writes via mmap_gtt are indeterminately delayed in an in + * internal buffer and are _not_ immediately visible to third parties accessing + * directly via mmap_cpu/mmap_wc. Use of mmap_gtt as part of an IPC + * communications channel when reporting false is strongly disadvised. + */ +#define I915_PARAM_MMAP_GTT_COHERENT 52 + typedef struct drm_i915_getparam { __s32 param; /* -- cgit v1.2.3 From 6bd31b3798c83b611737097d98008663a2f5d065 Mon Sep 17 00:00:00 2001 From: Rodrigo Vivi Date: Thu, 19 Jul 2018 16:42:17 -0700 Subject: drm/i915: Remove unused "ret" variable. Just a small clean-up with no functional change, only removing a variable that is never actually used. Cc: Dhinakaran Pandiyan Signed-off-by: Rodrigo Vivi Reviewed-by: Reviewed-by: Nathan Ciobanu Link: https://patchwork.freedesktop.org/patch/msgid/20180719234217.7855-1-rodrigo.vivi@intel.com --- drivers/gpu/drm/i915/intel_dp_mst.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c index 789a403e9f99..d88d0f5abdce 100644 --- a/drivers/gpu/drm/i915/intel_dp_mst.c +++ b/drivers/gpu/drm/i915/intel_dp_mst.c @@ -263,7 +263,6 @@ static void intel_mst_enable_dp(struct intel_encoder *encoder, struct intel_dp *intel_dp = &intel_dig_port->dp; struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); enum port port = intel_dig_port->base.port; - int ret; DRM_DEBUG_KMS("active links %d\n", intel_dp->active_mst_links); @@ -274,9 +273,9 @@ static void intel_mst_enable_dp(struct intel_encoder *encoder, 1)) DRM_ERROR("Timed out waiting for ACT sent\n"); - ret = drm_dp_check_act_status(&intel_dp->mst_mgr); + drm_dp_check_act_status(&intel_dp->mst_mgr); - ret = drm_dp_update_payload_part2(&intel_dp->mst_mgr); + drm_dp_update_payload_part2(&intel_dp->mst_mgr); if (pipe_config->has_audio) intel_audio_codec_enable(encoder, pipe_config, conn_state); } -- cgit v1.2.3 From 7a72c78bdd0a1ea1d879610542679cc680398220 Mon Sep 17 00:00:00 2001 From: Rodrigo Vivi Date: Thu, 19 Jul 2018 17:31:55 -0700 Subject: drm/i915: Fix psr sink status report. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit First of all don't try to read dpcd if PSR is not even supported. But also, if read failed return -EIO instead of reporting via a backchannel. v2: fix dev_priv: At this level m->private is the connector. (CI/DK) don't convert dpcd read errors to EIO. (DK) Fixes: 5b7b30864d1d ("drm/i915/psr: Split sink status into a separate debugfs node") Cc: Chris Wilson Cc: Dhinakaran Pandiyan Cc: José Roberto de Souza Signed-off-by: Rodrigo Vivi Reviewed-by: Dhinakaran Pandiyan Link: https://patchwork.freedesktop.org/patch/msgid/20180720003155.16290-1-rodrigo.vivi@intel.com --- drivers/gpu/drm/i915/i915_debugfs.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index b3aefd623557..59dc0610ea44 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -2606,13 +2606,22 @@ static int i915_psr_sink_status_show(struct seq_file *m, void *data) "sink internal error", }; struct drm_connector *connector = m->private; + struct drm_i915_private *dev_priv = to_i915(connector->dev); struct intel_dp *intel_dp = enc_to_intel_dp(&intel_attached_encoder(connector)->base); + int ret; + + if (!CAN_PSR(dev_priv)) { + seq_puts(m, "PSR Unsupported\n"); + return -ENODEV; + } if (connector->status != connector_status_connected) return -ENODEV; - if (drm_dp_dpcd_readb(&intel_dp->aux, DP_PSR_STATUS, &val) == 1) { + ret = drm_dp_dpcd_readb(&intel_dp->aux, DP_PSR_STATUS, &val); + + if (ret == 1) { const char *str = "unknown"; val &= DP_PSR_SINK_STATE_MASK; @@ -2620,7 +2629,7 @@ static int i915_psr_sink_status_show(struct seq_file *m, void *data) str = sink_status[val]; seq_printf(m, "Sink PSR status: 0x%x [%s]\n", val, str); } else { - DRM_ERROR("dpcd read (at %u) failed\n", DP_PSR_STATUS); + return ret; } return 0; -- cgit v1.2.3 From 6f15a7de86c8cf2dc09fc9e6d07047efa40ef809 Mon Sep 17 00:00:00 2001 From: Anusha Srivatsa Date: Fri, 20 Jul 2018 14:42:42 -0700 Subject: drm/i915/dsc: Add missing _MMIO() from PPS registers This patch fixes the commit - <2efbb2f099fb> ("i915/dp/dsc: Add DSC PPS register definitions"), which did not have _MMIO() for DSCA and DSCC. v2: Fix typos. (manasi) v3: Change the commit message (Rodrigo) Cc: Rodrigi Vivi Cc: Manasi Navare Signed-off-by: Anusha Srivatsa Reviewed-by: Manasi Navare Signed-off-by: Rodrigo Vivi Link: https://patchwork.freedesktop.org/patch/msgid/1532122962-9068-1-git-send-email-anusha.srivatsa@intel.com --- drivers/gpu/drm/i915/i915_reg.h | 76 ++++++++++++++++++++--------------------- 1 file changed, 38 insertions(+), 38 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 8af945d8a995..73946055aa15 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -10349,8 +10349,8 @@ enum skl_power_gate { #define ICL_PHY_MISC_DE_IO_COMP_PWR_DOWN (1 << 23) /* Icelake Display Stream Compression Registers */ -#define DSCA_PICTURE_PARAMETER_SET_0 0x6B200 -#define DSCC_PICTURE_PARAMETER_SET_0 0x6BA00 +#define DSCA_PICTURE_PARAMETER_SET_0 _MMIO(0x6B200) +#define DSCC_PICTURE_PARAMETER_SET_0 _MMIO(0x6BA00) #define _ICL_DSC0_PICTURE_PARAMETER_SET_0_PB 0x78270 #define _ICL_DSC1_PICTURE_PARAMETER_SET_0_PB 0x78370 #define _ICL_DSC0_PICTURE_PARAMETER_SET_0_PC 0x78470 @@ -10370,8 +10370,8 @@ enum skl_power_gate { #define DSC_VER_MIN_SHIFT 4 #define DSC_VER_MAJ (0x1 << 0) -#define DSCA_PICTURE_PARAMETER_SET_1 0x6B204 -#define DSCC_PICTURE_PARAMETER_SET_1 0x6BA04 +#define DSCA_PICTURE_PARAMETER_SET_1 _MMIO(0x6B204) +#define DSCC_PICTURE_PARAMETER_SET_1 _MMIO(0x6BA04) #define _ICL_DSC0_PICTURE_PARAMETER_SET_1_PB 0x78274 #define _ICL_DSC1_PICTURE_PARAMETER_SET_1_PB 0x78374 #define _ICL_DSC0_PICTURE_PARAMETER_SET_1_PC 0x78474 @@ -10384,8 +10384,8 @@ enum skl_power_gate { _ICL_DSC1_PICTURE_PARAMETER_SET_1_PC) #define DSC_BPP(bpp) ((bpp) << 0) -#define DSCA_PICTURE_PARAMETER_SET_2 0x6B208 -#define DSCC_PICTURE_PARAMETER_SET_2 0x6BA08 +#define DSCA_PICTURE_PARAMETER_SET_2 _MMIO(0x6B208) +#define DSCC_PICTURE_PARAMETER_SET_2 _MMIO(0x6BA08) #define _ICL_DSC0_PICTURE_PARAMETER_SET_2_PB 0x78278 #define _ICL_DSC1_PICTURE_PARAMETER_SET_2_PB 0x78378 #define _ICL_DSC0_PICTURE_PARAMETER_SET_2_PC 0x78478 @@ -10399,8 +10399,8 @@ enum skl_power_gate { #define DSC_PIC_WIDTH(pic_width) ((pic_width) << 16) #define DSC_PIC_HEIGHT(pic_height) ((pic_height) << 0) -#define DSCA_PICTURE_PARAMETER_SET_3 0x6B20C -#define DSCC_PICTURE_PARAMETER_SET_3 0x6BA0C +#define DSCA_PICTURE_PARAMETER_SET_3 _MMIO(0x6B20C) +#define DSCC_PICTURE_PARAMETER_SET_3 _MMIO(0x6BA0C) #define _ICL_DSC0_PICTURE_PARAMETER_SET_3_PB 0x7827C #define _ICL_DSC1_PICTURE_PARAMETER_SET_3_PB 0x7837C #define _ICL_DSC0_PICTURE_PARAMETER_SET_3_PC 0x7847C @@ -10414,8 +10414,8 @@ enum skl_power_gate { #define DSC_SLICE_WIDTH(slice_width) ((slice_width) << 16) #define DSC_SLICE_HEIGHT(slice_height) ((slice_height) << 0) -#define DSCA_PICTURE_PARAMETER_SET_4 0x6B210 -#define DSCC_PICTURE_PARAMETER_SET_4 0x6BA10 +#define DSCA_PICTURE_PARAMETER_SET_4 _MMIO(0x6B210) +#define DSCC_PICTURE_PARAMETER_SET_4 _MMIO(0x6BA10) #define _ICL_DSC0_PICTURE_PARAMETER_SET_4_PB 0x78280 #define _ICL_DSC1_PICTURE_PARAMETER_SET_4_PB 0x78380 #define _ICL_DSC0_PICTURE_PARAMETER_SET_4_PC 0x78480 @@ -10429,8 +10429,8 @@ enum skl_power_gate { #define DSC_INITIAL_DEC_DELAY(dec_delay) ((dec_delay) << 16) #define DSC_INITIAL_XMIT_DELAY(xmit_delay) ((xmit_delay) << 0) -#define DSCA_PICTURE_PARAMETER_SET_5 0x6B214 -#define DSCC_PICTURE_PARAMETER_SET_5 0x6BA14 +#define DSCA_PICTURE_PARAMETER_SET_5 _MMIO(0x6B214) +#define DSCC_PICTURE_PARAMETER_SET_5 _MMIO(0x6BA14) #define _ICL_DSC0_PICTURE_PARAMETER_SET_5_PB 0x78284 #define _ICL_DSC1_PICTURE_PARAMETER_SET_5_PB 0x78384 #define _ICL_DSC0_PICTURE_PARAMETER_SET_5_PC 0x78484 @@ -10441,11 +10441,11 @@ enum skl_power_gate { #define ICL_DSC1_PICTURE_PARAMETER_SET_5(pipe) _MMIO_PIPE((pipe) - PIPE_B, \ _ICL_DSC1_PICTURE_PARAMETER_SET_5_PC, \ _ICL_DSC1_PICTURE_PARAMETER_SET_5_PC) -#define DSC_SCALE_DEC_INTINT(scale_dec) ((scale_dec) << 16) +#define DSC_SCALE_DEC_INT(scale_dec) ((scale_dec) << 16) #define DSC_SCALE_INC_INT(scale_inc) ((scale_inc) << 0) -#define DSCA_PICTURE_PARAMETER_SET_6 0x6B218 -#define DSCC_PICTURE_PARAMETER_SET_6 0x6BA18 +#define DSCA_PICTURE_PARAMETER_SET_6 _MMIO(0x6B218) +#define DSCC_PICTURE_PARAMETER_SET_6 _MMIO(0x6BA18) #define _ICL_DSC0_PICTURE_PARAMETER_SET_6_PB 0x78288 #define _ICL_DSC1_PICTURE_PARAMETER_SET_6_PB 0x78388 #define _ICL_DSC0_PICTURE_PARAMETER_SET_6_PC 0x78488 @@ -10456,13 +10456,13 @@ enum skl_power_gate { #define ICL_DSC1_PICTURE_PARAMETER_SET_6(pipe) _MMIO_PIPE((pipe) - PIPE_B, \ _ICL_DSC1_PICTURE_PARAMETER_SET_6_PB, \ _ICL_DSC1_PICTURE_PARAMETER_SET_6_PC) -#define DSC_FLATNESS_MAX_QP(max_qp) (qp << 24) -#define DSC_FLATNESS_MIN_QP(min_qp) (qp << 16) +#define DSC_FLATNESS_MAX_QP(max_qp) ((max_qp) << 24) +#define DSC_FLATNESS_MIN_QP(min_qp) ((min_qp) << 16) #define DSC_FIRST_LINE_BPG_OFFSET(offset) ((offset) << 8) #define DSC_INITIAL_SCALE_VALUE(value) ((value) << 0) -#define DSCA_PICTURE_PARAMETER_SET_7 0x6B21C -#define DSCC_PICTURE_PARAMETER_SET_7 0x6BA1C +#define DSCA_PICTURE_PARAMETER_SET_7 _MMIO(0x6B21C) +#define DSCC_PICTURE_PARAMETER_SET_7 _MMIO(0x6BA1C) #define _ICL_DSC0_PICTURE_PARAMETER_SET_7_PB 0x7828C #define _ICL_DSC1_PICTURE_PARAMETER_SET_7_PB 0x7838C #define _ICL_DSC0_PICTURE_PARAMETER_SET_7_PC 0x7848C @@ -10476,8 +10476,8 @@ enum skl_power_gate { #define DSC_NFL_BPG_OFFSET(bpg_offset) ((bpg_offset) << 16) #define DSC_SLICE_BPG_OFFSET(bpg_offset) ((bpg_offset) << 0) -#define DSCA_PICTURE_PARAMETER_SET_8 0x6B220 -#define DSCC_PICTURE_PARAMETER_SET_8 0x6BA20 +#define DSCA_PICTURE_PARAMETER_SET_8 _MMIO(0x6B220) +#define DSCC_PICTURE_PARAMETER_SET_8 _MMIO(0x6BA20) #define _ICL_DSC0_PICTURE_PARAMETER_SET_8_PB 0x78290 #define _ICL_DSC1_PICTURE_PARAMETER_SET_8_PB 0x78390 #define _ICL_DSC0_PICTURE_PARAMETER_SET_8_PC 0x78490 @@ -10491,8 +10491,8 @@ enum skl_power_gate { #define DSC_INITIAL_OFFSET(initial_offset) ((initial_offset) << 16) #define DSC_FINAL_OFFSET(final_offset) ((final_offset) << 0) -#define DSCA_PICTURE_PARAMETER_SET_9 0x6B224 -#define DSCC_PICTURE_PARAMETER_SET_9 0x6BA24 +#define DSCA_PICTURE_PARAMETER_SET_9 _MMIO(0x6B224) +#define DSCC_PICTURE_PARAMETER_SET_9 _MMIO(0x6BA24) #define _ICL_DSC0_PICTURE_PARAMETER_SET_9_PB 0x78294 #define _ICL_DSC1_PICTURE_PARAMETER_SET_9_PB 0x78394 #define _ICL_DSC0_PICTURE_PARAMETER_SET_9_PC 0x78494 @@ -10506,8 +10506,8 @@ enum skl_power_gate { #define DSC_RC_EDGE_FACTOR(rc_edge_fact) ((rc_edge_fact) << 16) #define DSC_RC_MODEL_SIZE(rc_model_size) ((rc_model_size) << 0) -#define DSCA_PICTURE_PARAMETER_SET_10 0x6B228 -#define DSCC_PICTURE_PARAMETER_SET_10 0x6BA28 +#define DSCA_PICTURE_PARAMETER_SET_10 _MMIO(0x6B228) +#define DSCC_PICTURE_PARAMETER_SET_10 _MMIO(0x6BA28) #define _ICL_DSC0_PICTURE_PARAMETER_SET_10_PB 0x78298 #define _ICL_DSC1_PICTURE_PARAMETER_SET_10_PB 0x78398 #define _ICL_DSC0_PICTURE_PARAMETER_SET_10_PC 0x78498 @@ -10523,8 +10523,8 @@ enum skl_power_gate { #define DSC_RC_QUANT_INC_LIMIT1(lim) ((lim) << 8) #define DSC_RC_QUANT_INC_LIMIT0(lim) ((lim) << 0) -#define DSCA_PICTURE_PARAMETER_SET_11 0x6B22C -#define DSCC_PICTURE_PARAMETER_SET_11 0x6BA2C +#define DSCA_PICTURE_PARAMETER_SET_11 _MMIO(0x6B22C) +#define DSCC_PICTURE_PARAMETER_SET_11 _MMIO(0x6BA2C) #define _ICL_DSC0_PICTURE_PARAMETER_SET_11_PB 0x7829C #define _ICL_DSC1_PICTURE_PARAMETER_SET_11_PB 0x7839C #define _ICL_DSC0_PICTURE_PARAMETER_SET_11_PC 0x7849C @@ -10536,8 +10536,8 @@ enum skl_power_gate { _ICL_DSC1_PICTURE_PARAMETER_SET_11_PB, \ _ICL_DSC1_PICTURE_PARAMETER_SET_11_PC) -#define DSCA_PICTURE_PARAMETER_SET_12 0x6B260 -#define DSCC_PICTURE_PARAMETER_SET_12 0x6BA60 +#define DSCA_PICTURE_PARAMETER_SET_12 _MMIO(0x6B260) +#define DSCC_PICTURE_PARAMETER_SET_12 _MMIO(0x6BA60) #define _ICL_DSC0_PICTURE_PARAMETER_SET_12_PB 0x782A0 #define _ICL_DSC1_PICTURE_PARAMETER_SET_12_PB 0x783A0 #define _ICL_DSC0_PICTURE_PARAMETER_SET_12_PC 0x784A0 @@ -10549,8 +10549,8 @@ enum skl_power_gate { _ICL_DSC1_PICTURE_PARAMETER_SET_12_PB, \ _ICL_DSC1_PICTURE_PARAMETER_SET_12_PC) -#define DSCA_PICTURE_PARAMETER_SET_13 0x6B264 -#define DSCC_PICTURE_PARAMETER_SET_13 0x6BA64 +#define DSCA_PICTURE_PARAMETER_SET_13 _MMIO(0x6B264) +#define DSCC_PICTURE_PARAMETER_SET_13 _MMIO(0x6BA64) #define _ICL_DSC0_PICTURE_PARAMETER_SET_13_PB 0x782A4 #define _ICL_DSC1_PICTURE_PARAMETER_SET_13_PB 0x783A4 #define _ICL_DSC0_PICTURE_PARAMETER_SET_13_PC 0x784A4 @@ -10562,8 +10562,8 @@ enum skl_power_gate { _ICL_DSC1_PICTURE_PARAMETER_SET_13_PB, \ _ICL_DSC1_PICTURE_PARAMETER_SET_13_PC) -#define DSCA_PICTURE_PARAMETER_SET_14 0x6B268 -#define DSCC_PICTURE_PARAMETER_SET_14 0x6BA68 +#define DSCA_PICTURE_PARAMETER_SET_14 _MMIO(0x6B268) +#define DSCC_PICTURE_PARAMETER_SET_14 _MMIO(0x6BA68) #define _ICL_DSC0_PICTURE_PARAMETER_SET_14_PB 0x782A8 #define _ICL_DSC1_PICTURE_PARAMETER_SET_14_PB 0x783A8 #define _ICL_DSC0_PICTURE_PARAMETER_SET_14_PC 0x784A8 @@ -10575,8 +10575,8 @@ enum skl_power_gate { _ICL_DSC1_PICTURE_PARAMETER_SET_14_PB, \ _ICL_DSC1_PICTURE_PARAMETER_SET_14_PC) -#define DSCA_PICTURE_PARAMETER_SET_15 0x6B26C -#define DSCC_PICTURE_PARAMETER_SET_15 0x6BA6C +#define DSCA_PICTURE_PARAMETER_SET_15 _MMIO(0x6B26C) +#define DSCC_PICTURE_PARAMETER_SET_15 _MMIO(0x6BA6C) #define _ICL_DSC0_PICTURE_PARAMETER_SET_15_PB 0x782AC #define _ICL_DSC1_PICTURE_PARAMETER_SET_15_PB 0x783AC #define _ICL_DSC0_PICTURE_PARAMETER_SET_15_PC 0x784AC @@ -10588,8 +10588,8 @@ enum skl_power_gate { _ICL_DSC1_PICTURE_PARAMETER_SET_15_PB, \ _ICL_DSC1_PICTURE_PARAMETER_SET_15_PC) -#define DSCA_PICTURE_PARAMETER_SET_16 0x6B270 -#define DSCC_PICTURE_PARAMETER_SET_16 0x6BA70 +#define DSCA_PICTURE_PARAMETER_SET_16 _MMIO(0x6B270) +#define DSCC_PICTURE_PARAMETER_SET_16 _MMIO(0x6BA70) #define _ICL_DSC0_PICTURE_PARAMETER_SET_16_PB 0x782B0 #define _ICL_DSC1_PICTURE_PARAMETER_SET_16_PB 0x783B0 #define _ICL_DSC0_PICTURE_PARAMETER_SET_16_PC 0x784B0 @@ -10601,7 +10601,7 @@ enum skl_power_gate { _ICL_DSC1_PICTURE_PARAMETER_SET_16_PB, \ _ICL_DSC1_PICTURE_PARAMETER_SET_16_PC) #define DSC_SLICE_PER_LINE(slice_per_line) ((slice_per_line) << 16) -#define DSC_SLICE_CHUNK_SIZE(slice_chunk_aize) (slice_chunk_size << 0) +#define DSC_SLICE_CHUNK_SIZE(slice_chunk_size) ((slice_chunk_size) << 0) /* Icelake Rate Control Buffer Threshold Registers */ #define DSCA_RC_BUF_THRESH_0 _MMIO(0x6B230) -- cgit v1.2.3 From a31ac0b23cb8ae832d49162bd217b2727154889b Mon Sep 17 00:00:00 2001 From: Oleksandr Andrushchenko Date: Thu, 19 Jul 2018 12:37:13 +0300 Subject: drm: Replace NULL with error value in drm_prime_pages_to_sg Dan Carpenter has reported that there is the following static checker warning: drivers/gpu/drm/drm_prime.c:317 drm_gem_map_dma_buf() warn: 'sgt' can also be NULL 314 sgt = obj->dev->driver->gem_prime_get_sg_table(obj); 315 316 if (!IS_ERR(sgt)) { 317 if (!dma_map_sg_attrs(attach->dev, sgt->sgl, sgt->nents, dir, Problematic functions are xen_drm_front_gem_get_sg_table and drm_gem_cma_prime_get_sg_table. Fix those by replacing NULL with error value. Signed-off-by: Oleksandr Andrushchenko Reported-by: Dan Carpenter Reviewed-by: Dan Carpenter Link: https://patchwork.freedesktop.org/patch/msgid/20180719093713.3643-1-andr2000@gmail.com --- drivers/gpu/drm/drm_gem_cma_helper.c | 4 ++-- drivers/gpu/drm/xen/xen_drm_front_gem.c | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/drm_gem_cma_helper.c b/drivers/gpu/drm/drm_gem_cma_helper.c index 80a5115c3846..1d2ced882b66 100644 --- a/drivers/gpu/drm/drm_gem_cma_helper.c +++ b/drivers/gpu/drm/drm_gem_cma_helper.c @@ -436,7 +436,7 @@ struct sg_table *drm_gem_cma_prime_get_sg_table(struct drm_gem_object *obj) sgt = kzalloc(sizeof(*sgt), GFP_KERNEL); if (!sgt) - return NULL; + return ERR_PTR(-ENOMEM); ret = dma_get_sgtable(obj->dev->dev, sgt, cma_obj->vaddr, cma_obj->paddr, obj->size); @@ -447,7 +447,7 @@ struct sg_table *drm_gem_cma_prime_get_sg_table(struct drm_gem_object *obj) out: kfree(sgt); - return NULL; + return ERR_PTR(ret); } EXPORT_SYMBOL_GPL(drm_gem_cma_prime_get_sg_table); diff --git a/drivers/gpu/drm/xen/xen_drm_front_gem.c b/drivers/gpu/drm/xen/xen_drm_front_gem.c index c85bfe7571cb..47ff019d3aef 100644 --- a/drivers/gpu/drm/xen/xen_drm_front_gem.c +++ b/drivers/gpu/drm/xen/xen_drm_front_gem.c @@ -179,7 +179,7 @@ struct sg_table *xen_drm_front_gem_get_sg_table(struct drm_gem_object *gem_obj) struct xen_gem_object *xen_obj = to_xen_gem_obj(gem_obj); if (!xen_obj->pages) - return NULL; + return ERR_PTR(-ENOMEM); return drm_prime_pages_to_sg(xen_obj->pages, xen_obj->num_pages); } -- cgit v1.2.3 From 574e0fbfc95e7fccc3b8321f25e1e4366ce72ad2 Mon Sep 17 00:00:00 2001 From: Thomas Zimmermann Date: Tue, 17 Jul 2018 13:09:27 +0200 Subject: drm/rockchip: Replace drm_dev_unref with drm_dev_put This patch unifies the naming of DRM functions for reference counting of struct drm_device. The resulting code is more aligned with the rest of the Linux kernel interfaces. Signed-off-by: Thomas Zimmermann Signed-off-by: Heiko Stuebner Link: https://patchwork.freedesktop.org/patch/msgid/20180717110927.30776-1-tzimmermann@suse.de --- drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c index f814d37b1db2..9c846be8fc64 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c @@ -184,7 +184,7 @@ err_mode_config_cleanup: err_free: drm_dev->dev_private = NULL; dev_set_drvdata(dev, NULL); - drm_dev_unref(drm_dev); + drm_dev_put(drm_dev); return ret; } @@ -204,7 +204,7 @@ static void rockchip_drm_unbind(struct device *dev) drm_dev->dev_private = NULL; dev_set_drvdata(dev, NULL); - drm_dev_unref(drm_dev); + drm_dev_put(drm_dev); } static const struct file_operations rockchip_drm_driver_fops = { -- cgit v1.2.3 From 4eaf317a60fbea0555b936035002ca9bd9b9105d Mon Sep 17 00:00:00 2001 From: Michał Winiarski Date: Thu, 12 Jul 2018 17:53:30 +0200 Subject: drm/i915/kvmgt: Fix compilation error MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit gvt_pin_guest_page extracted some of the gvt_dma_map_page functionality: commit 79e542f5af79 ("drm/i915/kvmgt: Support setting dma map for huge pages") And yet, part of it was reintroduced in: commit 39b4cbadb9a9 ("drm/i915/kvmgt: Check the pfn got from vfio_pin_pages") Causing kvmgt part to no longer build. Let's remove it. Reported-by: Tomasz Lis Signed-off-by: Michał Winiarski Cc: Changbin Du Cc: Zhenyu Wang Acked-by: Zhenyu Wang Signed-off-by: Rodrigo Vivi Link: https://patchwork.freedesktop.org/patch/msgid/20180712155330.32055-1-michal.winiarski@intel.com --- drivers/gpu/drm/i915/gvt/kvmgt.c | 6 ------ 1 file changed, 6 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c index 718ab307a500..4d2f53ae9f0f 100644 --- a/drivers/gpu/drm/i915/gvt/kvmgt.c +++ b/drivers/gpu/drm/i915/gvt/kvmgt.c @@ -185,12 +185,6 @@ static int gvt_dma_map_page(struct intel_vgpu *vgpu, unsigned long gfn, if (ret) return ret; - if (!pfn_valid(pfn)) { - gvt_vgpu_err("pfn 0x%lx is not mem backed\n", pfn); - vfio_unpin_pages(mdev_dev(vgpu->vdev.mdev), &gfn, 1); - return -EINVAL; - } - /* Setup DMA mapping. */ *dma_addr = dma_map_page(dev, page, 0, size, PCI_DMA_BIDIRECTIONAL); ret = dma_mapping_error(dev, *dma_addr); -- cgit v1.2.3 From bb5ffe6fd58cd37f1cade411c4a00745ed0fbbd1 Mon Sep 17 00:00:00 2001 From: Nathan Ciobanu Date: Fri, 20 Jul 2018 14:44:12 -0700 Subject: drm/i915/dp: Limit link training clock recovery loop Limit the link training clock recovery loop to 10 attempts at LANEx_CR_DONE per DP 1.4 spec section 3.5.1.2.2 and 80 attempts for pre-DP 1.4 (4 voltage levels x 4 preemphasis levels x x 5 identical voltages tries). Some faulty USB-C MST hubs can cause us to get stuck in this loop indefinitely requesting something like: voltage swing: 0, pre-emphasis level: 2 voltage swing: 1, pre-emphasis level: 2 voltage swing: 0, pre-emphasis level: 3 over and over so max_vswing would never be reached, drm_dp_clock_recovery_ok() would never return true and voltage_tries would always get reset to 1. The driver sends those values to the hub but the hub keeps requesting new values every time. Changes in v2: - updated commit message (DK, Manasi) - defined DP_DP14_MAX_CR_TRIES (Marc) - made the loop iterate for max 10 times (Rodrigo, Marc) Changes in v3: - changed error message to use DP_DP14_MAX_CR_TRIES Changes in v4: - Updated the title to reflect the change - Updated the commit message - Added 80 attempts for pre-DP 1.4 devices Changes in v5: - Removed DP_DP14_MAX_CR_TRIES from drm v6: Updated comment to match kernel style (Rodrigo) Cc: Dhinakaran Pandiyan Cc: Rodrigo Vivi Cc: Marc Herbert Cc: Manasi Navare Signed-off-by: Nathan Ciobanu Reviewed-by: Rodrigo Vivi Signed-off-by: Rodrigo Vivi Link: https://patchwork.freedesktop.org/patch/msgid/20180720214413.29506-1-rodrigo.vivi@intel.com --- drivers/gpu/drm/i915/intel_dp_link_training.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/intel_dp_link_training.c b/drivers/gpu/drm/i915/intel_dp_link_training.c index 4da6e33c7fa1..299cad5632ed 100644 --- a/drivers/gpu/drm/i915/intel_dp_link_training.c +++ b/drivers/gpu/drm/i915/intel_dp_link_training.c @@ -129,7 +129,7 @@ static bool intel_dp_link_training_clock_recovery(struct intel_dp *intel_dp) { uint8_t voltage; - int voltage_tries, max_vswing_tries; + int voltage_tries, max_vswing_tries, cr_tries, max_cr_tries; uint8_t link_config[2]; uint8_t link_bw, rate_select; @@ -170,9 +170,20 @@ intel_dp_link_training_clock_recovery(struct intel_dp *intel_dp) return false; } + /* + * DP 1.4 spec clock recovery retries defined but + * for devices pre-DP 1.4 we set the retry limit + * to 4 (voltage levels) x 4 (preemphasis levels) x + * x 5 (same voltage retries) = 80 (max iterations) + */ + if (intel_dp->dpcd[DP_DPCD_REV] >= DP_DPCD_REV_14) + max_cr_tries = 10; + else + max_cr_tries = 80; + voltage_tries = 1; max_vswing_tries = 0; - for (;;) { + for (cr_tries = 0; cr_tries < max_cr_tries; ++cr_tries) { uint8_t link_status[DP_LINK_STATUS_SIZE]; drm_dp_link_train_clock_recovery_delay(intel_dp->dpcd); @@ -216,6 +227,8 @@ intel_dp_link_training_clock_recovery(struct intel_dp *intel_dp) ++max_vswing_tries; } + DRM_ERROR("Failed clock recovery %d times, giving up!\n", max_cr_tries); + return false; } /* -- cgit v1.2.3 From 102506d52922345cf17af362b94b869cffefbbe1 Mon Sep 17 00:00:00 2001 From: Nathan Ciobanu Date: Fri, 20 Jul 2018 14:44:13 -0700 Subject: drm/i915/dp: Refactor max_vswing_tries variable Changes the type and renames the max_vswing_tries variable which was declared as an integer but used as a boolean making it easy to be confused with a counter. Changes in v2: - updated the title and commit message - left the loop exit point in place v3: fix typo in title v4: renamed max_vswing to max_vswing_reached (Ville) Cc: Dhinakaran Pandiyan Cc: Rodrigo Vivi Cc: Marc Herbert Signed-off-by: Nathan Ciobanu Reviewed-by: Rodrigo Vivi Signed-off-by: Rodrigo Vivi Link: https://patchwork.freedesktop.org/patch/msgid/20180720214413.29506-2-rodrigo.vivi@intel.com --- drivers/gpu/drm/i915/intel_dp_link_training.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/intel_dp_link_training.c b/drivers/gpu/drm/i915/intel_dp_link_training.c index 299cad5632ed..07e128c7443c 100644 --- a/drivers/gpu/drm/i915/intel_dp_link_training.c +++ b/drivers/gpu/drm/i915/intel_dp_link_training.c @@ -129,7 +129,8 @@ static bool intel_dp_link_training_clock_recovery(struct intel_dp *intel_dp) { uint8_t voltage; - int voltage_tries, max_vswing_tries, cr_tries, max_cr_tries; + int voltage_tries, cr_tries, max_cr_tries; + bool max_vswing_reached = false; uint8_t link_config[2]; uint8_t link_bw, rate_select; @@ -182,7 +183,6 @@ intel_dp_link_training_clock_recovery(struct intel_dp *intel_dp) max_cr_tries = 80; voltage_tries = 1; - max_vswing_tries = 0; for (cr_tries = 0; cr_tries < max_cr_tries; ++cr_tries) { uint8_t link_status[DP_LINK_STATUS_SIZE]; @@ -203,7 +203,7 @@ intel_dp_link_training_clock_recovery(struct intel_dp *intel_dp) return false; } - if (max_vswing_tries == 1) { + if (max_vswing_reached) { DRM_DEBUG_KMS("Max Voltage Swing reached\n"); return false; } @@ -224,7 +224,7 @@ intel_dp_link_training_clock_recovery(struct intel_dp *intel_dp) voltage_tries = 1; if (intel_dp_link_max_vswing_reached(intel_dp)) - ++max_vswing_tries; + max_vswing_reached = true; } DRM_ERROR("Failed clock recovery %d times, giving up!\n", max_cr_tries); -- cgit v1.2.3 From 6a2f59e45afc6277cb3e9c9dec466935bb8a8295 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Sat, 21 Jul 2018 13:50:37 +0100 Subject: drm/i915: Pull unpin map into vma release MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit A reasonably common operation is to pin the map of the vma alongside the vma itself for the lifetime of the vma, and so release both pins at the same time as destroying the vma. It is common enough to pull into the release function, making that central function more attractive to a couple of other callsites. The continual ulterior motive is to sweep over errors on module load aborting... Testcase: igt/drv_module_reload/basic-reload-inject Signed-off-by: Chris Wilson Cc: Michał Winiarski Cc: Michal Wajdeczko Reviewed-by: Michał Winiarski Link: https://patchwork.freedesktop.org/patch/msgid/20180721125037.20127-1-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/i915_perf.c | 10 ++++------ drivers/gpu/drm/i915/i915_vma.c | 5 ++++- drivers/gpu/drm/i915/i915_vma.h | 3 ++- drivers/gpu/drm/i915/intel_engine_cs.c | 18 +++--------------- drivers/gpu/drm/i915/intel_guc.c | 5 ++--- drivers/gpu/drm/i915/intel_guc_ads.c | 2 +- drivers/gpu/drm/i915/intel_guc_ct.c | 7 ++----- drivers/gpu/drm/i915/intel_guc_log.c | 2 +- drivers/gpu/drm/i915/intel_guc_submission.c | 10 ++++------ drivers/gpu/drm/i915/intel_lrc.c | 2 +- 10 files changed, 24 insertions(+), 40 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c index 6bf10952c724..0376338d1f8d 100644 --- a/drivers/gpu/drm/i915/i915_perf.c +++ b/drivers/gpu/drm/i915/i915_perf.c @@ -1338,14 +1338,12 @@ free_oa_buffer(struct drm_i915_private *i915) { mutex_lock(&i915->drm.struct_mutex); - i915_gem_object_unpin_map(i915->perf.oa.oa_buffer.vma->obj); - i915_vma_unpin(i915->perf.oa.oa_buffer.vma); - i915_gem_object_put(i915->perf.oa.oa_buffer.vma->obj); - - i915->perf.oa.oa_buffer.vma = NULL; - i915->perf.oa.oa_buffer.vaddr = NULL; + i915_vma_unpin_and_release(&i915->perf.oa.oa_buffer.vma, + I915_VMA_RELEASE_MAP); mutex_unlock(&i915->drm.struct_mutex); + + i915->perf.oa.oa_buffer.vaddr = NULL; } static void i915_oa_stream_destroy(struct i915_perf_stream *stream) diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c index 11d834f94220..274fd2a7bcb6 100644 --- a/drivers/gpu/drm/i915/i915_vma.c +++ b/drivers/gpu/drm/i915/i915_vma.c @@ -406,7 +406,7 @@ void i915_vma_unpin_iomap(struct i915_vma *vma) i915_vma_unpin(vma); } -void i915_vma_unpin_and_release(struct i915_vma **p_vma) +void i915_vma_unpin_and_release(struct i915_vma **p_vma, unsigned int flags) { struct i915_vma *vma; struct drm_i915_gem_object *obj; @@ -421,6 +421,9 @@ void i915_vma_unpin_and_release(struct i915_vma **p_vma) i915_vma_unpin(vma); i915_vma_close(vma); + if (flags & I915_VMA_RELEASE_MAP) + i915_gem_object_unpin_map(obj); + __i915_gem_object_release_unless_active(obj); } diff --git a/drivers/gpu/drm/i915/i915_vma.h b/drivers/gpu/drm/i915/i915_vma.h index f06d66377107..af5296b015f5 100644 --- a/drivers/gpu/drm/i915/i915_vma.h +++ b/drivers/gpu/drm/i915/i915_vma.h @@ -138,7 +138,8 @@ i915_vma_instance(struct drm_i915_gem_object *obj, struct i915_address_space *vm, const struct i915_ggtt_view *view); -void i915_vma_unpin_and_release(struct i915_vma **p_vma); +void i915_vma_unpin_and_release(struct i915_vma **p_vma, unsigned int flags); +#define I915_VMA_RELEASE_MAP BIT(0) static inline bool i915_vma_is_active(struct i915_vma *vma) { diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c index 2d1952849d69..734a789688da 100644 --- a/drivers/gpu/drm/i915/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/intel_engine_cs.c @@ -527,7 +527,7 @@ err_unref: void intel_engine_cleanup_scratch(struct intel_engine_cs *engine) { - i915_vma_unpin_and_release(&engine->scratch); + i915_vma_unpin_and_release(&engine->scratch, 0); } static void cleanup_phys_status_page(struct intel_engine_cs *engine) @@ -543,20 +543,8 @@ static void cleanup_phys_status_page(struct intel_engine_cs *engine) static void cleanup_status_page(struct intel_engine_cs *engine) { - struct i915_vma *vma; - struct drm_i915_gem_object *obj; - - vma = fetch_and_zero(&engine->status_page.vma); - if (!vma) - return; - - obj = vma->obj; - - i915_vma_unpin(vma); - i915_vma_close(vma); - - i915_gem_object_unpin_map(obj); - __i915_gem_object_release_unless_active(obj); + i915_vma_unpin_and_release(&engine->status_page.vma, + I915_VMA_RELEASE_MAP); } static int init_status_page(struct intel_engine_cs *engine) diff --git a/drivers/gpu/drm/i915/intel_guc.c b/drivers/gpu/drm/i915/intel_guc.c index 560c7406ae40..846d693ecb53 100644 --- a/drivers/gpu/drm/i915/intel_guc.c +++ b/drivers/gpu/drm/i915/intel_guc.c @@ -170,7 +170,7 @@ static int guc_shared_data_create(struct intel_guc *guc) vaddr = i915_gem_object_pin_map(vma->obj, I915_MAP_WB); if (IS_ERR(vaddr)) { - i915_vma_unpin_and_release(&vma); + i915_vma_unpin_and_release(&vma, 0); return PTR_ERR(vaddr); } @@ -182,8 +182,7 @@ static int guc_shared_data_create(struct intel_guc *guc) static void guc_shared_data_destroy(struct intel_guc *guc) { - i915_gem_object_unpin_map(guc->shared_data->obj); - i915_vma_unpin_and_release(&guc->shared_data); + i915_vma_unpin_and_release(&guc->shared_data, I915_VMA_RELEASE_MAP); } int intel_guc_init(struct intel_guc *guc) diff --git a/drivers/gpu/drm/i915/intel_guc_ads.c b/drivers/gpu/drm/i915/intel_guc_ads.c index dcaa3fb71765..f0db62887f50 100644 --- a/drivers/gpu/drm/i915/intel_guc_ads.c +++ b/drivers/gpu/drm/i915/intel_guc_ads.c @@ -148,5 +148,5 @@ int intel_guc_ads_create(struct intel_guc *guc) void intel_guc_ads_destroy(struct intel_guc *guc) { - i915_vma_unpin_and_release(&guc->ads_vma); + i915_vma_unpin_and_release(&guc->ads_vma, 0); } diff --git a/drivers/gpu/drm/i915/intel_guc_ct.c b/drivers/gpu/drm/i915/intel_guc_ct.c index 371b6005954a..a52883e9146f 100644 --- a/drivers/gpu/drm/i915/intel_guc_ct.c +++ b/drivers/gpu/drm/i915/intel_guc_ct.c @@ -204,7 +204,7 @@ static int ctch_init(struct intel_guc *guc, return 0; err_vma: - i915_vma_unpin_and_release(&ctch->vma); + i915_vma_unpin_and_release(&ctch->vma, 0); err_out: CT_DEBUG_DRIVER("CT: channel %d initialization failed; err=%d\n", ctch->owner, err); @@ -214,10 +214,7 @@ err_out: static void ctch_fini(struct intel_guc *guc, struct intel_guc_ct_channel *ctch) { - GEM_BUG_ON(!ctch->vma); - - i915_gem_object_unpin_map(ctch->vma->obj); - i915_vma_unpin_and_release(&ctch->vma); + i915_vma_unpin_and_release(&ctch->vma, I915_VMA_RELEASE_MAP); } static int ctch_open(struct intel_guc *guc, diff --git a/drivers/gpu/drm/i915/intel_guc_log.c b/drivers/gpu/drm/i915/intel_guc_log.c index 6da61a71d28f..d3ebdbc0182e 100644 --- a/drivers/gpu/drm/i915/intel_guc_log.c +++ b/drivers/gpu/drm/i915/intel_guc_log.c @@ -498,7 +498,7 @@ err: void intel_guc_log_destroy(struct intel_guc_log *log) { - i915_vma_unpin_and_release(&log->vma); + i915_vma_unpin_and_release(&log->vma, 0); } int intel_guc_log_set_level(struct intel_guc_log *log, u32 level) diff --git a/drivers/gpu/drm/i915/intel_guc_submission.c b/drivers/gpu/drm/i915/intel_guc_submission.c index 4aa5e6463e7b..195adbd0ebf7 100644 --- a/drivers/gpu/drm/i915/intel_guc_submission.c +++ b/drivers/gpu/drm/i915/intel_guc_submission.c @@ -317,7 +317,7 @@ static int guc_stage_desc_pool_create(struct intel_guc *guc) vaddr = i915_gem_object_pin_map(vma->obj, I915_MAP_WB); if (IS_ERR(vaddr)) { - i915_vma_unpin_and_release(&vma); + i915_vma_unpin_and_release(&vma, 0); return PTR_ERR(vaddr); } @@ -331,8 +331,7 @@ static int guc_stage_desc_pool_create(struct intel_guc *guc) static void guc_stage_desc_pool_destroy(struct intel_guc *guc) { ida_destroy(&guc->stage_ids); - i915_gem_object_unpin_map(guc->stage_desc_pool->obj); - i915_vma_unpin_and_release(&guc->stage_desc_pool); + i915_vma_unpin_and_release(&guc->stage_desc_pool, I915_VMA_RELEASE_MAP); } /* @@ -1008,7 +1007,7 @@ guc_client_alloc(struct drm_i915_private *dev_priv, err_vaddr: i915_gem_object_unpin_map(client->vma->obj); err_vma: - i915_vma_unpin_and_release(&client->vma); + i915_vma_unpin_and_release(&client->vma, 0); err_id: ida_simple_remove(&guc->stage_ids, client->stage_id); err_client: @@ -1020,8 +1019,7 @@ static void guc_client_free(struct intel_guc_client *client) { unreserve_doorbell(client); guc_stage_desc_fini(client->guc, client); - i915_gem_object_unpin_map(client->vma->obj); - i915_vma_unpin_and_release(&client->vma); + i915_vma_unpin_and_release(&client->vma, I915_VMA_RELEASE_MAP); ida_simple_remove(&client->guc->stage_ids, client->stage_id); kfree(client); } diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index 174479232e94..c52ef2817c96 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -1657,7 +1657,7 @@ err: static void lrc_destroy_wa_ctx(struct intel_engine_cs *engine) { - i915_vma_unpin_and_release(&engine->wa_ctx.vma); + i915_vma_unpin_and_release(&engine->wa_ctx.vma, 0); } typedef u32 *(*wa_bb_func_t)(struct intel_engine_cs *engine, u32 *batch); -- cgit v1.2.3 From a5b22b5ed88bfb848d40d3c593f5506bdb75c882 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Fri, 20 Jul 2018 12:11:02 +0100 Subject: drm/i915: Show stack (by WARN) for hitting forcewake errors On Sandybridge, we need a workaround to wait for the CPU thread to wake up before we are sure that we have enabled the GT power well. However, we do see the errors being reported and failed reads returning spurious results. To try and capture more details as it fails, promote the error into a WARN so we grab the stacktrace, and to try and reduce the frequency of error increase the timeout from 500us to 5ms. Signed-off-by: Chris Wilson Reviewed-by: Tvrtko Ursulin Link: https://patchwork.freedesktop.org/patch/msgid/20180720111102.11549-1-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/intel_uncore.c | 18 ++++++++++++++---- 1 file changed, 14 insertions(+), 4 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c index b892ca8396e8..284be151f645 100644 --- a/drivers/gpu/drm/i915/intel_uncore.c +++ b/drivers/gpu/drm/i915/intel_uncore.c @@ -283,14 +283,24 @@ fw_domains_reset(struct drm_i915_private *i915, fw_domain_reset(i915, d); } +static inline u32 gt_thread_status(struct drm_i915_private *dev_priv) +{ + u32 val; + + val = __raw_i915_read32(dev_priv, GEN6_GT_THREAD_STATUS_REG); + val &= GEN6_GT_THREAD_STATUS_CORE_MASK; + + return val; +} + static void __gen6_gt_wait_for_thread_c0(struct drm_i915_private *dev_priv) { - /* w/a for a sporadic read returning 0 by waiting for the GT + /* + * w/a for a sporadic read returning 0 by waiting for the GT * thread to wake up. */ - if (wait_for_atomic_us((__raw_i915_read32(dev_priv, GEN6_GT_THREAD_STATUS_REG) & - GEN6_GT_THREAD_STATUS_CORE_MASK) == 0, 500)) - DRM_ERROR("GT thread status wait timed out\n"); + WARN_ONCE(wait_for_atomic_us(gt_thread_status(dev_priv) == 0, 5000), + "GT thread status wait timed out\n"); } static void fw_domains_get_with_thread_status(struct drm_i915_private *dev_priv, -- cgit v1.2.3 From 2aafafab5a9ad922ae13d04f5abca7942a499a5e Mon Sep 17 00:00:00 2001 From: Ayan Kumar Halder Date: Mon, 23 Jul 2018 09:57:00 +0100 Subject: drm/sun4i: Use (struct drm_format_info) fields to determine if a format is yuv and multi planar or not. We do not need sun4i_backend_format_is_packed_yuv422() / sun4i_backend_format_is_planar_yuv() to determine if the format is yuv multi planar or not. (struct drm_format_info *)->is_yuv tells if the format is yuv or not. And (struct drm_format_info *)->num_planes denotes the number of planes. This issue was identified during a review on a previous patch:- https://lists.freedesktop.org/archives/dri-devel/2018-July/183840.html Signed-off-by: Ayan Kumar halder Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/1532336220-3791-1-git-send-email-ayan.halder@arm.com --- drivers/gpu/drm/sun4i/sun4i_backend.c | 37 ++++++----------------------------- 1 file changed, 6 insertions(+), 31 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/sun4i/sun4i_backend.c b/drivers/gpu/drm/sun4i/sun4i_backend.c index f6d8d0d4d5bf..bf49c55b0f2c 100644 --- a/drivers/gpu/drm/sun4i/sun4i_backend.c +++ b/drivers/gpu/drm/sun4i/sun4i_backend.c @@ -63,32 +63,6 @@ static const u32 sunxi_bt601_yuv2rgb_coef[12] = { 0x000004a7, 0x00000812, 0x00000000, 0x00002eb1, }; -static inline bool sun4i_backend_format_is_planar_yuv(uint32_t format) -{ - switch (format) { - case DRM_FORMAT_YUV411: - case DRM_FORMAT_YUV422: - case DRM_FORMAT_YUV444: - return true; - default: - return false; - } -} - -static inline bool sun4i_backend_format_is_packed_yuv422(uint32_t format) -{ - switch (format) { - case DRM_FORMAT_YUYV: - case DRM_FORMAT_YVYU: - case DRM_FORMAT_UYVY: - case DRM_FORMAT_VYUY: - return true; - - default: - return false; - } -} - static void sun4i_backend_apply_color_correction(struct sunxi_engine *engine) { int i; @@ -218,7 +192,8 @@ static int sun4i_backend_update_yuv_format(struct sun4i_backend *backend, { struct drm_plane_state *state = plane->state; struct drm_framebuffer *fb = state->fb; - uint32_t format = fb->format->format; + const struct drm_format_info *format = fb->format; + const uint32_t fmt = format->format; u32 val = SUN4I_BACKEND_IYUVCTL_EN; int i; @@ -236,16 +211,16 @@ static int sun4i_backend_update_yuv_format(struct sun4i_backend *backend, SUN4I_BACKEND_ATTCTL_REG0_LAY_YUVEN); /* TODO: Add support for the multi-planar YUV formats */ - if (sun4i_backend_format_is_packed_yuv422(format)) + if (format->num_planes == 1) val |= SUN4I_BACKEND_IYUVCTL_FBFMT_PACKED_YUV422; else - DRM_DEBUG_DRIVER("Unsupported YUV format (0x%x)\n", format); + DRM_DEBUG_DRIVER("Unsupported YUV format (0x%x)\n", fmt); /* * Allwinner seems to list the pixel sequence from right to left, while * DRM lists it from left to right. */ - switch (format) { + switch (fmt) { case DRM_FORMAT_YUYV: val |= SUN4I_BACKEND_IYUVCTL_FBPS_VYUY; break; @@ -260,7 +235,7 @@ static int sun4i_backend_update_yuv_format(struct sun4i_backend *backend, break; default: DRM_DEBUG_DRIVER("Unsupported YUV pixel sequence (0x%x)\n", - format); + fmt); } regmap_write(backend->engine.regs, SUN4I_BACKEND_IYUVCTL_REG, val); -- cgit v1.2.3 From cf77d79b4e296d3c65aefa094232694a5977ea9a Mon Sep 17 00:00:00 2001 From: Jernej Skrabec Date: Tue, 10 Jul 2018 22:35:05 +0200 Subject: drm/sun4i: tcon: Add another way for matching mixers with tcon Till now, new way of matching engines with TCONs was reading their respective ids and match them by those ids. However, with introduction of TCON TOP, that might not be so straightforward anymore. - there might be more TCONs that engines (mixers) - TCON ids might have non-consecutive ids Workaround that by matching mixer id with TCON index from TCON list. For example, R40 has 2 mixers and 4 TCONs. Board designer can choose 2 outputs, which are connected to any of those 4 TCONs. As long as there are only 2 TCONs enabled in DT, using index in list as alternative id, will allow to match them with mixer 0 and 1. Reviewed-by: Chen-Yu Tsai Signed-off-by: Jernej Skrabec Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20180710203511.18454-13-jernej.skrabec@siol.net --- drivers/gpu/drm/sun4i/sun4i_tcon.c | 51 ++++++++++++++++++++++++++++++++++++-- 1 file changed, 49 insertions(+), 2 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c index 9bfb5b967d38..8b3ca1e83f26 100644 --- a/drivers/gpu/drm/sun4i/sun4i_tcon.c +++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c @@ -36,6 +36,7 @@ #include "sun4i_rgb.h" #include "sun4i_tcon.h" #include "sun6i_mipi_dsi.h" +#include "sun8i_tcon_top.h" #include "sunxi_engine.h" static struct drm_connector *sun4i_tcon_get_connector(const struct drm_encoder *encoder) @@ -908,6 +909,36 @@ static struct sunxi_engine *sun4i_tcon_get_engine_by_id(struct sun4i_drv *drv, return ERR_PTR(-EINVAL); } +static bool sun4i_tcon_connected_to_tcon_top(struct device_node *node) +{ + struct device_node *remote; + bool ret = false; + + remote = of_graph_get_remote_node(node, 0, -1); + if (remote) { + ret = !!of_match_node(sun8i_tcon_top_of_table, remote); + of_node_put(remote); + } + + return ret; +} + +static int sun4i_tcon_get_index(struct sun4i_drv *drv) +{ + struct list_head *pos; + int size = 0; + + /* + * Because TCON is added to the list at the end of the probe + * (after this function is called), index of the current TCON + * will be same as current TCON list size. + */ + list_for_each(pos, &drv->tcon_list) + ++size; + + return size; +} + /* * On SoCs with the old display pipeline design (Display Engine 1.0), * we assumed the TCON was always tied to just one backend. However @@ -956,8 +987,24 @@ static struct sunxi_engine *sun4i_tcon_find_engine(struct sun4i_drv *drv, * connections between the backend and TCON? */ if (of_get_child_count(port) > 1) { - /* Get our ID directly from an upstream endpoint */ - int id = sun4i_tcon_of_get_id_from_port(port); + int id; + + /* + * When pipeline has the same number of TCONs and engines which + * are represented by frontends/backends (DE1) or mixers (DE2), + * we match them by their respective IDs. However, if pipeline + * contains TCON TOP, chances are that there are either more + * TCONs than engines (R40) or TCONs with non-consecutive ids. + * (H6). In that case it's easier just use TCON index in list + * as an id. That means that on R40, any 2 TCONs can be enabled + * in DT out of 4 (there are 2 mixers). Due to the design of + * TCON TOP, remaining 2 TCONs can't be connected to anything + * anyway. + */ + if (sun4i_tcon_connected_to_tcon_top(node)) + id = sun4i_tcon_get_index(drv); + else + id = sun4i_tcon_of_get_id_from_port(port); /* Get our engine by matching our ID */ engine = sun4i_tcon_get_engine_by_id(drv, id); -- cgit v1.2.3 From 0305189afb323c1bad2be7fe713d556a9b708003 Mon Sep 17 00:00:00 2001 From: Jernej Skrabec Date: Tue, 10 Jul 2018 22:35:06 +0200 Subject: drm/sun4i: tcon: Add support for R40 TCON R40 TV TCON is basically the same as on A83T. However, it needs special handling, because it has to set up TCON TOP muxes at runtime. Reviewed-by: Chen-Yu Tsai Signed-off-by: Jernej Skrabec Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20180710203511.18454-14-jernej.skrabec@siol.net --- drivers/gpu/drm/sun4i/sun4i_tcon.c | 40 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c index 8b3ca1e83f26..0cebb2db5b99 100644 --- a/drivers/gpu/drm/sun4i/sun4i_tcon.c +++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c @@ -1319,6 +1319,40 @@ static int sun6i_tcon_set_mux(struct sun4i_tcon *tcon, return 0; } +static int sun8i_r40_tcon_tv_set_mux(struct sun4i_tcon *tcon, + const struct drm_encoder *encoder) +{ + struct device_node *port, *remote; + struct platform_device *pdev; + int id, ret; + + /* find TCON TOP platform device and TCON id */ + + port = of_graph_get_port_by_id(tcon->dev->of_node, 0); + if (!port) + return -EINVAL; + + id = sun4i_tcon_of_get_id_from_port(port); + of_node_put(port); + + remote = of_graph_get_remote_node(tcon->dev->of_node, 0, -1); + if (!remote) + return -EINVAL; + + pdev = of_find_device_by_node(remote); + of_node_put(remote); + if (!pdev) + return -EINVAL; + + if (encoder->encoder_type == DRM_MODE_ENCODER_TMDS) { + ret = sun8i_tcon_top_set_hdmi_src(&pdev->dev, id); + if (ret) + return ret; + } + + return sun8i_tcon_top_de_config(&pdev->dev, tcon->id, id); +} + static const struct sun4i_tcon_quirks sun4i_a10_quirks = { .has_channel_0 = true, .has_channel_1 = true, @@ -1366,6 +1400,11 @@ static const struct sun4i_tcon_quirks sun8i_a83t_tv_quirks = { .has_channel_1 = true, }; +static const struct sun4i_tcon_quirks sun8i_r40_tv_quirks = { + .has_channel_1 = true, + .set_mux = sun8i_r40_tcon_tv_set_mux, +}; + static const struct sun4i_tcon_quirks sun8i_v3s_quirks = { .has_channel_0 = true, }; @@ -1390,6 +1429,7 @@ const struct of_device_id sun4i_tcon_of_table[] = { { .compatible = "allwinner,sun8i-a33-tcon", .data = &sun8i_a33_quirks }, { .compatible = "allwinner,sun8i-a83t-tcon-lcd", .data = &sun8i_a83t_lcd_quirks }, { .compatible = "allwinner,sun8i-a83t-tcon-tv", .data = &sun8i_a83t_tv_quirks }, + { .compatible = "allwinner,sun8i-r40-tcon-tv", .data = &sun8i_r40_tv_quirks }, { .compatible = "allwinner,sun8i-v3s-tcon", .data = &sun8i_v3s_quirks }, { .compatible = "allwinner,sun9i-a80-tcon-lcd", .data = &sun9i_a80_tcon_lcd_quirks }, { .compatible = "allwinner,sun9i-a80-tcon-tv", .data = &sun9i_a80_tcon_tv_quirks }, -- cgit v1.2.3 From a38bb309c2ce25a562819949a19fefa38ae8ab96 Mon Sep 17 00:00:00 2001 From: Manasi Navare Date: Fri, 13 Jul 2018 12:43:13 -0700 Subject: drm/i915/icl: Add remaining registers and bitfields for MG PHY DDI This patch adds the remaining register definitions and bit fields required for MG PHy DDI buffer initializations and voltage swing programming for MG PHy DDI ports. While at it this patch also fixes the naming for previously defined MG PHY registers in original commit id (c92f47b5ec977a "drm/i915/icl: Add register defs for voltage swing sequences for MG PHY DDI"). Since the MG PHY registers are first defined in ICL platform, there is no need for _ICL prefix. v4 (from Paulo): add two white spaces to CRI_CALCINIT too. v3: * Fix register names, add spaces for MASK defines, correct the order of #defines (Paulo) v2: * Change the MG_TX_DRVCTL registers names to match the spec (Anusha) Cc: James Ausmus Reviewed-by: Paulo Zanoni Signed-off-by: Manasi Navare Signed-off-by: Paulo Zanoni Link: https://patchwork.freedesktop.org/patch/msgid/1531510993-6606-1-git-send-email-manasi.d.navare@intel.com --- drivers/gpu/drm/i915/i915_reg.h | 270 +++++++++++++++++++++++----------------- 1 file changed, 157 insertions(+), 113 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 73946055aa15..477e694b8cc4 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -1932,121 +1932,165 @@ enum i915_power_well_id { #define N_SCALAR(x) ((x) << 24) #define N_SCALAR_MASK (0x7F << 24) -#define _ICL_MG_PHY_PORT_LN(port, ln, ln0p1, ln0p2, ln1p1) \ +#define MG_PHY_PORT_LN(port, ln, ln0p1, ln0p2, ln1p1) \ _MMIO(_PORT((port) - PORT_C, ln0p1, ln0p2) + (ln) * ((ln1p1) - (ln0p1))) -#define _ICL_MG_TX_LINK_PARAMS_TX1LN0_PORT1 0x16812C -#define _ICL_MG_TX_LINK_PARAMS_TX1LN1_PORT1 0x16852C -#define _ICL_MG_TX_LINK_PARAMS_TX1LN0_PORT2 0x16912C -#define _ICL_MG_TX_LINK_PARAMS_TX1LN1_PORT2 0x16952C -#define _ICL_MG_TX_LINK_PARAMS_TX1LN0_PORT3 0x16A12C -#define _ICL_MG_TX_LINK_PARAMS_TX1LN1_PORT3 0x16A52C -#define _ICL_MG_TX_LINK_PARAMS_TX1LN0_PORT4 0x16B12C -#define _ICL_MG_TX_LINK_PARAMS_TX1LN1_PORT4 0x16B52C -#define ICL_PORT_MG_TX1_LINK_PARAMS(port, ln) \ - _ICL_MG_PHY_PORT_LN(port, ln, _ICL_MG_TX_LINK_PARAMS_TX1LN0_PORT1, \ - _ICL_MG_TX_LINK_PARAMS_TX1LN0_PORT2, \ - _ICL_MG_TX_LINK_PARAMS_TX1LN1_PORT1) - -#define _ICL_MG_TX_LINK_PARAMS_TX2LN0_PORT1 0x1680AC -#define _ICL_MG_TX_LINK_PARAMS_TX2LN1_PORT1 0x1684AC -#define _ICL_MG_TX_LINK_PARAMS_TX2LN0_PORT2 0x1690AC -#define _ICL_MG_TX_LINK_PARAMS_TX2LN1_PORT2 0x1694AC -#define _ICL_MG_TX_LINK_PARAMS_TX2LN0_PORT3 0x16A0AC -#define _ICL_MG_TX_LINK_PARAMS_TX2LN1_PORT3 0x16A4AC -#define _ICL_MG_TX_LINK_PARAMS_TX2LN0_PORT4 0x16B0AC -#define _ICL_MG_TX_LINK_PARAMS_TX2LN1_PORT4 0x16B4AC -#define ICL_PORT_MG_TX2_LINK_PARAMS(port, ln) \ - _ICL_MG_PHY_PORT_LN(port, ln, _ICL_MG_TX_LINK_PARAMS_TX2LN0_PORT1, \ - _ICL_MG_TX_LINK_PARAMS_TX2LN0_PORT2, \ - _ICL_MG_TX_LINK_PARAMS_TX2LN1_PORT1) -#define CRI_USE_FS32 (1 << 5) - -#define _ICL_MG_TX_PISO_READLOAD_TX1LN0_PORT1 0x16814C -#define _ICL_MG_TX_PISO_READLOAD_TX1LN1_PORT1 0x16854C -#define _ICL_MG_TX_PISO_READLOAD_TX1LN0_PORT2 0x16914C -#define _ICL_MG_TX_PISO_READLOAD_TX1LN1_PORT2 0x16954C -#define _ICL_MG_TX_PISO_READLOAD_TX1LN0_PORT3 0x16A14C -#define _ICL_MG_TX_PISO_READLOAD_TX1LN1_PORT3 0x16A54C -#define _ICL_MG_TX_PISO_READLOAD_TX1LN0_PORT4 0x16B14C -#define _ICL_MG_TX_PISO_READLOAD_TX1LN1_PORT4 0x16B54C -#define ICL_PORT_MG_TX1_PISO_READLOAD(port, ln) \ - _ICL_MG_PHY_PORT_LN(port, ln, _ICL_MG_TX_PISO_READLOAD_TX1LN0_PORT1, \ - _ICL_MG_TX_PISO_READLOAD_TX1LN0_PORT2, \ - _ICL_MG_TX_PISO_READLOAD_TX1LN1_PORT1) - -#define _ICL_MG_TX_PISO_READLOAD_TX2LN0_PORT1 0x1680CC -#define _ICL_MG_TX_PISO_READLOAD_TX2LN1_PORT1 0x1684CC -#define _ICL_MG_TX_PISO_READLOAD_TX2LN0_PORT2 0x1690CC -#define _ICL_MG_TX_PISO_READLOAD_TX2LN1_PORT2 0x1694CC -#define _ICL_MG_TX_PISO_READLOAD_TX2LN0_PORT3 0x16A0CC -#define _ICL_MG_TX_PISO_READLOAD_TX2LN1_PORT3 0x16A4CC -#define _ICL_MG_TX_PISO_READLOAD_TX2LN0_PORT4 0x16B0CC -#define _ICL_MG_TX_PISO_READLOAD_TX2LN1_PORT4 0x16B4CC -#define ICL_PORT_MG_TX2_PISO_READLOAD(port, ln) \ - _ICL_MG_PHY_PORT_LN(port, ln, _ICL_MG_TX_PISO_READLOAD_TX2LN0_PORT1, \ - _ICL_MG_TX_PISO_READLOAD_TX2LN0_PORT2, \ - _ICL_MG_TX_PISO_READLOAD_TX2LN1_PORT1) -#define CRI_CALCINIT (1 << 1) - -#define _ICL_MG_TX_SWINGCTRL_TX1LN0_PORT1 0x168148 -#define _ICL_MG_TX_SWINGCTRL_TX1LN1_PORT1 0x168548 -#define _ICL_MG_TX_SWINGCTRL_TX1LN0_PORT2 0x169148 -#define _ICL_MG_TX_SWINGCTRL_TX1LN1_PORT2 0x169548 -#define _ICL_MG_TX_SWINGCTRL_TX1LN0_PORT3 0x16A148 -#define _ICL_MG_TX_SWINGCTRL_TX1LN1_PORT3 0x16A548 -#define _ICL_MG_TX_SWINGCTRL_TX1LN0_PORT4 0x16B148 -#define _ICL_MG_TX_SWINGCTRL_TX1LN1_PORT4 0x16B548 -#define ICL_PORT_MG_TX1_SWINGCTRL(port, ln) \ - _ICL_MG_PHY_PORT_LN(port, ln, _ICL_MG_TX_SWINGCTRL_TX1LN0_PORT1, \ - _ICL_MG_TX_SWINGCTRL_TX1LN0_PORT2, \ - _ICL_MG_TX_SWINGCTRL_TX1LN1_PORT1) - -#define _ICL_MG_TX_SWINGCTRL_TX2LN0_PORT1 0x1680C8 -#define _ICL_MG_TX_SWINGCTRL_TX2LN1_PORT1 0x1684C8 -#define _ICL_MG_TX_SWINGCTRL_TX2LN0_PORT2 0x1690C8 -#define _ICL_MG_TX_SWINGCTRL_TX2LN1_PORT2 0x1694C8 -#define _ICL_MG_TX_SWINGCTRL_TX2LN0_PORT3 0x16A0C8 -#define _ICL_MG_TX_SWINGCTRL_TX2LN1_PORT3 0x16A4C8 -#define _ICL_MG_TX_SWINGCTRL_TX2LN0_PORT4 0x16B0C8 -#define _ICL_MG_TX_SWINGCTRL_TX2LN1_PORT4 0x16B4C8 -#define ICL_PORT_MG_TX2_SWINGCTRL(port, ln) \ - _ICL_MG_PHY_PORT_LN(port, ln, _ICL_MG_TX_SWINGCTRL_TX2LN0_PORT1, \ - _ICL_MG_TX_SWINGCTRL_TX2LN0_PORT2, \ - _ICL_MG_TX_SWINGCTRL_TX2LN1_PORT1) -#define CRI_TXDEEMPH_OVERRIDE_17_12(x) ((x) << 0) -#define CRI_TXDEEMPH_OVERRIDE_17_12_MASK (0x3F << 0) - -#define _ICL_MG_TX_DRVCTRL_TX1LN0_PORT1 0x168144 -#define _ICL_MG_TX_DRVCTRL_TX1LN1_PORT1 0x168544 -#define _ICL_MG_TX_DRVCTRL_TX1LN0_PORT2 0x169144 -#define _ICL_MG_TX_DRVCTRL_TX1LN1_PORT2 0x169544 -#define _ICL_MG_TX_DRVCTRL_TX1LN0_PORT3 0x16A144 -#define _ICL_MG_TX_DRVCTRL_TX1LN1_PORT3 0x16A544 -#define _ICL_MG_TX_DRVCTRL_TX1LN0_PORT4 0x16B144 -#define _ICL_MG_TX_DRVCTRL_TX1LN1_PORT4 0x16B544 -#define ICL_PORT_MG_TX1_DRVCTRL(port, ln) \ - _ICL_MG_PHY_PORT_LN(port, ln, _ICL_MG_TX_DRVCTRL_TX1LN0_PORT1, \ - _ICL_MG_TX_DRVCTRL_TX1LN0_PORT2, \ - _ICL_MG_TX_DRVCTRL_TX1LN1_PORT1) - -#define _ICL_MG_TX_DRVCTRL_TX2LN0_PORT1 0x1680C4 -#define _ICL_MG_TX_DRVCTRL_TX2LN1_PORT1 0x1684C4 -#define _ICL_MG_TX_DRVCTRL_TX2LN0_PORT2 0x1690C4 -#define _ICL_MG_TX_DRVCTRL_TX2LN1_PORT2 0x1694C4 -#define _ICL_MG_TX_DRVCTRL_TX2LN0_PORT3 0x16A0C4 -#define _ICL_MG_TX_DRVCTRL_TX2LN1_PORT3 0x16A4C4 -#define _ICL_MG_TX_DRVCTRL_TX2LN0_PORT4 0x16B0C4 -#define _ICL_MG_TX_DRVCTRL_TX2LN1_PORT4 0x16B4C4 -#define ICL_PORT_MG_TX2_DRVCTRL(port, ln) \ - _ICL_MG_PHY_PORT_LN(port, ln, _ICL_MG_TX_DRVCTRL_TX2LN0_PORT1, \ - _ICL_MG_TX_DRVCTRL_TX2LN0_PORT2, \ - _ICL_MG_TX_DRVCTRL_TX2LN1_PORT1) -#define CRI_TXDEEMPH_OVERRIDE_11_6(x) ((x) << 24) -#define CRI_TXDEEMPH_OVERRIDE_11_6_MASK (0x3F << 24) -#define CRI_TXDEEMPH_OVERRIDE_EN (1 << 22) -#define CRI_TXDEEMPH_OVERRIDE_5_0(x) ((x) << 16) -#define CRI_TXDEEMPH_OVERRIDE_5_0_MASK (0x3F << 16) +#define MG_TX_LINK_PARAMS_TX1LN0_PORT1 0x16812C +#define MG_TX_LINK_PARAMS_TX1LN1_PORT1 0x16852C +#define MG_TX_LINK_PARAMS_TX1LN0_PORT2 0x16912C +#define MG_TX_LINK_PARAMS_TX1LN1_PORT2 0x16952C +#define MG_TX_LINK_PARAMS_TX1LN0_PORT3 0x16A12C +#define MG_TX_LINK_PARAMS_TX1LN1_PORT3 0x16A52C +#define MG_TX_LINK_PARAMS_TX1LN0_PORT4 0x16B12C +#define MG_TX_LINK_PARAMS_TX1LN1_PORT4 0x16B52C +#define MG_TX1_LINK_PARAMS(port, ln) \ + MG_PHY_PORT_LN(port, ln, MG_TX_LINK_PARAMS_TX1LN0_PORT1, \ + MG_TX_LINK_PARAMS_TX1LN0_PORT2, \ + MG_TX_LINK_PARAMS_TX1LN1_PORT1) + +#define MG_TX_LINK_PARAMS_TX2LN0_PORT1 0x1680AC +#define MG_TX_LINK_PARAMS_TX2LN1_PORT1 0x1684AC +#define MG_TX_LINK_PARAMS_TX2LN0_PORT2 0x1690AC +#define MG_TX_LINK_PARAMS_TX2LN1_PORT2 0x1694AC +#define MG_TX_LINK_PARAMS_TX2LN0_PORT3 0x16A0AC +#define MG_TX_LINK_PARAMS_TX2LN1_PORT3 0x16A4AC +#define MG_TX_LINK_PARAMS_TX2LN0_PORT4 0x16B0AC +#define MG_TX_LINK_PARAMS_TX2LN1_PORT4 0x16B4AC +#define MG_TX2_LINK_PARAMS(port, ln) \ + MG_PHY_PORT_LN(port, ln, MG_TX_LINK_PARAMS_TX2LN0_PORT1, \ + MG_TX_LINK_PARAMS_TX2LN0_PORT2, \ + MG_TX_LINK_PARAMS_TX2LN1_PORT1) +#define CRI_USE_FS32 (1 << 5) + +#define MG_TX_PISO_READLOAD_TX1LN0_PORT1 0x16814C +#define MG_TX_PISO_READLOAD_TX1LN1_PORT1 0x16854C +#define MG_TX_PISO_READLOAD_TX1LN0_PORT2 0x16914C +#define MG_TX_PISO_READLOAD_TX1LN1_PORT2 0x16954C +#define MG_TX_PISO_READLOAD_TX1LN0_PORT3 0x16A14C +#define MG_TX_PISO_READLOAD_TX1LN1_PORT3 0x16A54C +#define MG_TX_PISO_READLOAD_TX1LN0_PORT4 0x16B14C +#define MG_TX_PISO_READLOAD_TX1LN1_PORT4 0x16B54C +#define MG_TX1_PISO_READLOAD(port, ln) \ + MG_PHY_PORT_LN(port, ln, MG_TX_PISO_READLOAD_TX1LN0_PORT1, \ + MG_TX_PISO_READLOAD_TX1LN0_PORT2, \ + MG_TX_PISO_READLOAD_TX1LN1_PORT1) + +#define MG_TX_PISO_READLOAD_TX2LN0_PORT1 0x1680CC +#define MG_TX_PISO_READLOAD_TX2LN1_PORT1 0x1684CC +#define MG_TX_PISO_READLOAD_TX2LN0_PORT2 0x1690CC +#define MG_TX_PISO_READLOAD_TX2LN1_PORT2 0x1694CC +#define MG_TX_PISO_READLOAD_TX2LN0_PORT3 0x16A0CC +#define MG_TX_PISO_READLOAD_TX2LN1_PORT3 0x16A4CC +#define MG_TX_PISO_READLOAD_TX2LN0_PORT4 0x16B0CC +#define MG_TX_PISO_READLOAD_TX2LN1_PORT4 0x16B4CC +#define MG_TX2_PISO_READLOAD(port, ln) \ + MG_PHY_PORT_LN(port, ln, MG_TX_PISO_READLOAD_TX2LN0_PORT1, \ + MG_TX_PISO_READLOAD_TX2LN0_PORT2, \ + MG_TX_PISO_READLOAD_TX2LN1_PORT1) +#define CRI_CALCINIT (1 << 1) + +#define MG_TX_SWINGCTRL_TX1LN0_PORT1 0x168148 +#define MG_TX_SWINGCTRL_TX1LN1_PORT1 0x168548 +#define MG_TX_SWINGCTRL_TX1LN0_PORT2 0x169148 +#define MG_TX_SWINGCTRL_TX1LN1_PORT2 0x169548 +#define MG_TX_SWINGCTRL_TX1LN0_PORT3 0x16A148 +#define MG_TX_SWINGCTRL_TX1LN1_PORT3 0x16A548 +#define MG_TX_SWINGCTRL_TX1LN0_PORT4 0x16B148 +#define MG_TX_SWINGCTRL_TX1LN1_PORT4 0x16B548 +#define MG_TX1_SWINGCTRL(port, ln) \ + MG_PHY_PORT_LN(port, ln, MG_TX_SWINGCTRL_TX1LN0_PORT1, \ + MG_TX_SWINGCTRL_TX1LN0_PORT2, \ + MG_TX_SWINGCTRL_TX1LN1_PORT1) + +#define MG_TX_SWINGCTRL_TX2LN0_PORT1 0x1680C8 +#define MG_TX_SWINGCTRL_TX2LN1_PORT1 0x1684C8 +#define MG_TX_SWINGCTRL_TX2LN0_PORT2 0x1690C8 +#define MG_TX_SWINGCTRL_TX2LN1_PORT2 0x1694C8 +#define MG_TX_SWINGCTRL_TX2LN0_PORT3 0x16A0C8 +#define MG_TX_SWINGCTRL_TX2LN1_PORT3 0x16A4C8 +#define MG_TX_SWINGCTRL_TX2LN0_PORT4 0x16B0C8 +#define MG_TX_SWINGCTRL_TX2LN1_PORT4 0x16B4C8 +#define MG_TX2_SWINGCTRL(port, ln) \ + MG_PHY_PORT_LN(port, ln, MG_TX_SWINGCTRL_TX2LN0_PORT1, \ + MG_TX_SWINGCTRL_TX2LN0_PORT2, \ + MG_TX_SWINGCTRL_TX2LN1_PORT1) +#define CRI_TXDEEMPH_OVERRIDE_17_12(x) ((x) << 0) +#define CRI_TXDEEMPH_OVERRIDE_17_12_MASK (0x3F << 0) + +#define MG_TX_DRVCTRL_TX1LN0_TXPORT1 0x168144 +#define MG_TX_DRVCTRL_TX1LN1_TXPORT1 0x168544 +#define MG_TX_DRVCTRL_TX1LN0_TXPORT2 0x169144 +#define MG_TX_DRVCTRL_TX1LN1_TXPORT2 0x169544 +#define MG_TX_DRVCTRL_TX1LN0_TXPORT3 0x16A144 +#define MG_TX_DRVCTRL_TX1LN1_TXPORT3 0x16A544 +#define MG_TX_DRVCTRL_TX1LN0_TXPORT4 0x16B144 +#define MG_TX_DRVCTRL_TX1LN1_TXPORT4 0x16B544 +#define MG_TX1_DRVCTRL(port, ln) \ + MG_PHY_PORT_LN(port, ln, MG_TX_DRVCTRL_TX1LN0_TXPORT1, \ + MG_TX_DRVCTRL_TX1LN0_TXPORT2, \ + MG_TX_DRVCTRL_TX1LN1_TXPORT1) + +#define MG_TX_DRVCTRL_TX2LN0_PORT1 0x1680C4 +#define MG_TX_DRVCTRL_TX2LN1_PORT1 0x1684C4 +#define MG_TX_DRVCTRL_TX2LN0_PORT2 0x1690C4 +#define MG_TX_DRVCTRL_TX2LN1_PORT2 0x1694C4 +#define MG_TX_DRVCTRL_TX2LN0_PORT3 0x16A0C4 +#define MG_TX_DRVCTRL_TX2LN1_PORT3 0x16A4C4 +#define MG_TX_DRVCTRL_TX2LN0_PORT4 0x16B0C4 +#define MG_TX_DRVCTRL_TX2LN1_PORT4 0x16B4C4 +#define MG_TX2_DRVCTRL(port, ln) \ + MG_PHY_PORT_LN(port, ln, MG_TX_DRVCTRL_TX2LN0_PORT1, \ + MG_TX_DRVCTRL_TX2LN0_PORT2, \ + MG_TX_DRVCTRL_TX2LN1_PORT1) +#define CRI_TXDEEMPH_OVERRIDE_11_6(x) ((x) << 24) +#define CRI_TXDEEMPH_OVERRIDE_11_6_MASK (0x3F << 24) +#define CRI_TXDEEMPH_OVERRIDE_EN (1 << 22) +#define CRI_TXDEEMPH_OVERRIDE_5_0(x) ((x) << 16) +#define CRI_TXDEEMPH_OVERRIDE_5_0_MASK (0x3F << 16) +#define CRI_LOADGEN_SEL(x) ((x) << 12) +#define CRI_LOADGEN_SEL_MASK (0x3 << 12) + +#define MG_CLKHUB_LN0_PORT1 0x16839C +#define MG_CLKHUB_LN1_PORT1 0x16879C +#define MG_CLKHUB_LN0_PORT2 0x16939C +#define MG_CLKHUB_LN1_PORT2 0x16979C +#define MG_CLKHUB_LN0_PORT3 0x16A39C +#define MG_CLKHUB_LN1_PORT3 0x16A79C +#define MG_CLKHUB_LN0_PORT4 0x16B39C +#define MG_CLKHUB_LN1_PORT4 0x16B79C +#define MG_CLKHUB(port, ln) \ + MG_PHY_PORT_LN(port, ln, MG_CLKHUB_LN0_PORT1, \ + MG_CLKHUB_LN0_PORT2, \ + MG_CLKHUB_LN1_PORT1) +#define CFG_LOW_RATE_LKREN_EN (1 << 11) + +#define MG_TX_DCC_TX1LN0_PORT1 0x168110 +#define MG_TX_DCC_TX1LN1_PORT1 0x168510 +#define MG_TX_DCC_TX1LN0_PORT2 0x169110 +#define MG_TX_DCC_TX1LN1_PORT2 0x169510 +#define MG_TX_DCC_TX1LN0_PORT3 0x16A110 +#define MG_TX_DCC_TX1LN1_PORT3 0x16A510 +#define MG_TX_DCC_TX1LN0_PORT4 0x16B110 +#define MG_TX_DCC_TX1LN1_PORT4 0x16B510 +#define MG_TX1_DCC(port, ln) \ + MG_PHY_PORT_LN(port, ln, MG_TX_DCC_TX1LN0_PORT1, \ + MG_TX_DCC_TX1LN0_PORT2, \ + MG_TX_DCC_TX1LN1_PORT1) +#define MG_TX_DCC_TX2LN0_PORT1 0x168090 +#define MG_TX_DCC_TX2LN1_PORT1 0x168490 +#define MG_TX_DCC_TX2LN0_PORT2 0x169090 +#define MG_TX_DCC_TX2LN1_PORT2 0x169490 +#define MG_TX_DCC_TX2LN0_PORT3 0x16A090 +#define MG_TX_DCC_TX2LN1_PORT3 0x16A490 +#define MG_TX_DCC_TX2LN0_PORT4 0x16B090 +#define MG_TX_DCC_TX2LN1_PORT4 0x16B490 +#define MG_TX2_DCC(port, ln) \ + MG_PHY_PORT_LN(port, ln, MG_TX_DCC_TX2LN0_PORT1, \ + MG_TX_DCC_TX2LN0_PORT2, \ + MG_TX_DCC_TX2LN1_PORT1) +#define CFG_AMI_CK_DIV_OVERRIDE_VAL(x) ((x) << 25) +#define CFG_AMI_CK_DIV_OVERRIDE_VAL_MASK (0x3 << 25) +#define CFG_AMI_CK_DIV_OVERRIDE_EN (1 << 24) /* The spec defines this only for BXT PHY0, but lets assume that this * would exist for PHY1 too if it had a second channel. -- cgit v1.2.3 From 07685c827b2a020c88c25a6961c435050bbbe7b3 Mon Sep 17 00:00:00 2001 From: Manasi Navare Date: Thu, 28 Jun 2018 15:35:44 -0700 Subject: drm/i915/icl: Implement voltage swing programming sequence for MG PHY DDI This sequence is used to setup voltage swing before enabling MG PHY DDI as well as for changing the voltage during DisplayPort Link training. For ICL, there are two types of DDIs. This sequence needs to be used for MG PHY DDI which is ports C-F. v6 (From Manasi): * Add programming for MG_CLKHUB and MG_TX_DCC as per the spec updates v5 (from Paulo): * Checkpatch. v4 (from Paulo): * Fix bogus error message * Fix copy+paste bugs (missing s/TX1/TX2/ after copy+paste) * Use the new mask names * Stay under 80 columns * Add some blank lines v3: * Clear the regs before writing (Paulo) v2: * Rename to MG PHY in the function def (Jani Nikula) * Rebase on top of new revision of other patches in series Cc: Rodrigo Vivi Cc: Jani Nikula Reviewed-by: Paulo Zanoni Signed-off-by: Manasi Navare Signed-off-by: Paulo Zanoni Link: https://patchwork.freedesktop.org/patch/msgid/1530225344-20373-2-git-send-email-manasi.d.navare@intel.com --- drivers/gpu/drm/i915/intel_ddi.c | 135 +++++++++++++++++++++++++++++++++++++-- 1 file changed, 129 insertions(+), 6 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index 39d66f8493fa..01c07a000464 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -2464,7 +2464,128 @@ static void icl_combo_phy_ddi_vswing_sequence(struct intel_encoder *encoder, I915_WRITE(ICL_PORT_TX_DW5_GRP(port), val); } -static void icl_ddi_vswing_sequence(struct intel_encoder *encoder, u32 level, +static void icl_mg_phy_ddi_vswing_sequence(struct intel_encoder *encoder, + int link_clock, + u32 level) +{ + struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); + enum port port = encoder->port; + const struct icl_mg_phy_ddi_buf_trans *ddi_translations; + u32 n_entries, val; + int ln; + + n_entries = ARRAY_SIZE(icl_mg_phy_ddi_translations); + ddi_translations = icl_mg_phy_ddi_translations; + /* The table does not have values for level 3 and level 9. */ + if (level >= n_entries || level == 3 || level == 9) { + DRM_DEBUG_KMS("DDI translation not found for level %d. Using %d instead.", + level, n_entries - 2); + level = n_entries - 2; + } + + /* Set MG_TX_LINK_PARAMS cri_use_fs32 to 0. */ + for (ln = 0; ln < 2; ln++) { + val = I915_READ(MG_TX1_LINK_PARAMS(port, ln)); + val &= ~CRI_USE_FS32; + I915_WRITE(MG_TX1_LINK_PARAMS(port, ln), val); + + val = I915_READ(MG_TX2_LINK_PARAMS(port, ln)); + val &= ~CRI_USE_FS32; + I915_WRITE(MG_TX2_LINK_PARAMS(port, ln), val); + } + + /* Program MG_TX_SWINGCTRL with values from vswing table */ + for (ln = 0; ln < 2; ln++) { + val = I915_READ(MG_TX1_SWINGCTRL(port, ln)); + val &= ~CRI_TXDEEMPH_OVERRIDE_17_12_MASK; + val |= CRI_TXDEEMPH_OVERRIDE_17_12( + ddi_translations[level].cri_txdeemph_override_17_12); + I915_WRITE(MG_TX1_SWINGCTRL(port, ln), val); + + val = I915_READ(MG_TX2_SWINGCTRL(port, ln)); + val &= ~CRI_TXDEEMPH_OVERRIDE_17_12_MASK; + val |= CRI_TXDEEMPH_OVERRIDE_17_12( + ddi_translations[level].cri_txdeemph_override_17_12); + I915_WRITE(MG_TX2_SWINGCTRL(port, ln), val); + } + + /* Program MG_TX_DRVCTRL with values from vswing table */ + for (ln = 0; ln < 2; ln++) { + val = I915_READ(MG_TX1_DRVCTRL(port, ln)); + val &= ~(CRI_TXDEEMPH_OVERRIDE_11_6_MASK | + CRI_TXDEEMPH_OVERRIDE_5_0_MASK); + val |= CRI_TXDEEMPH_OVERRIDE_5_0( + ddi_translations[level].cri_txdeemph_override_5_0) | + CRI_TXDEEMPH_OVERRIDE_11_6( + ddi_translations[level].cri_txdeemph_override_11_6) | + CRI_TXDEEMPH_OVERRIDE_EN; + I915_WRITE(MG_TX1_DRVCTRL(port, ln), val); + + val = I915_READ(MG_TX2_DRVCTRL(port, ln)); + val &= ~(CRI_TXDEEMPH_OVERRIDE_11_6_MASK | + CRI_TXDEEMPH_OVERRIDE_5_0_MASK); + val |= CRI_TXDEEMPH_OVERRIDE_5_0( + ddi_translations[level].cri_txdeemph_override_5_0) | + CRI_TXDEEMPH_OVERRIDE_11_6( + ddi_translations[level].cri_txdeemph_override_11_6) | + CRI_TXDEEMPH_OVERRIDE_EN; + I915_WRITE(MG_TX2_DRVCTRL(port, ln), val); + + /* FIXME: Program CRI_LOADGEN_SEL after the spec is updated */ + } + + /* + * Program MG_CLKHUB with value from frequency table + * In case of Legacy mode on MG PHY, both TX1 and TX2 enabled so use the + * values from table for which TX1 and TX2 enabled. + */ + for (ln = 0; ln < 2; ln++) { + val = I915_READ(MG_CLKHUB(port, ln)); + if (link_clock < 300000) + val |= CFG_LOW_RATE_LKREN_EN; + else + val &= ~CFG_LOW_RATE_LKREN_EN; + I915_WRITE(MG_CLKHUB(port, ln), val); + } + + /* Program the MG_TX_DCC based on the link frequency */ + for (ln = 0; ln < 2; ln++) { + val = I915_READ(MG_TX1_DCC(port, ln)); + val &= ~CFG_AMI_CK_DIV_OVERRIDE_VAL_MASK; + if (link_clock <= 500000) { + val &= ~CFG_AMI_CK_DIV_OVERRIDE_EN; + } else { + val |= CFG_AMI_CK_DIV_OVERRIDE_EN | + CFG_AMI_CK_DIV_OVERRIDE_VAL(1); + } + I915_WRITE(MG_TX1_DCC(port, ln), val); + + val = I915_READ(MG_TX2_DCC(port, ln)); + val &= ~CFG_AMI_CK_DIV_OVERRIDE_VAL_MASK; + if (link_clock <= 500000) { + val &= ~CFG_AMI_CK_DIV_OVERRIDE_EN; + } else { + val |= CFG_AMI_CK_DIV_OVERRIDE_EN | + CFG_AMI_CK_DIV_OVERRIDE_VAL(1); + } + I915_WRITE(MG_TX2_DCC(port, ln), val); + } + + /* Program MG_TX_PISO_READLOAD with values from vswing table */ + for (ln = 0; ln < 2; ln++) { + val = I915_READ(MG_TX1_PISO_READLOAD(port, ln)); + val |= CRI_CALCINIT; + I915_WRITE(MG_TX1_PISO_READLOAD(port, ln), val); + + val = I915_READ(MG_TX2_PISO_READLOAD(port, ln)); + val |= CRI_CALCINIT; + I915_WRITE(MG_TX2_PISO_READLOAD(port, ln), val); + } +} + +static void icl_ddi_vswing_sequence(struct intel_encoder *encoder, + int link_clock, + u32 level, enum intel_output_type type) { enum port port = encoder->port; @@ -2472,8 +2593,7 @@ static void icl_ddi_vswing_sequence(struct intel_encoder *encoder, u32 level, if (port == PORT_A || port == PORT_B) icl_combo_phy_ddi_vswing_sequence(encoder, level, type); else - /* Not Implemented Yet */ - WARN_ON(1); + icl_mg_phy_ddi_vswing_sequence(encoder, link_clock, level); } static uint32_t translate_signal_level(int signal_levels) @@ -2508,7 +2628,8 @@ u32 bxt_signal_levels(struct intel_dp *intel_dp) int level = intel_ddi_dp_level(intel_dp); if (IS_ICELAKE(dev_priv)) - icl_ddi_vswing_sequence(encoder, level, encoder->type); + icl_ddi_vswing_sequence(encoder, intel_dp->link_rate, + level, encoder->type); else if (IS_CANNONLAKE(dev_priv)) cnl_ddi_vswing_sequence(encoder, level, encoder->type); else @@ -2689,7 +2810,8 @@ static void intel_ddi_pre_enable_dp(struct intel_encoder *encoder, intel_display_power_get(dev_priv, dig_port->ddi_io_power_domain); if (IS_ICELAKE(dev_priv)) - icl_ddi_vswing_sequence(encoder, level, encoder->type); + icl_ddi_vswing_sequence(encoder, crtc_state->port_clock, + level, encoder->type); else if (IS_CANNONLAKE(dev_priv)) cnl_ddi_vswing_sequence(encoder, level, encoder->type); else if (IS_GEN9_LP(dev_priv)) @@ -2724,7 +2846,8 @@ static void intel_ddi_pre_enable_hdmi(struct intel_encoder *encoder, intel_display_power_get(dev_priv, dig_port->ddi_io_power_domain); if (IS_ICELAKE(dev_priv)) - icl_ddi_vswing_sequence(encoder, level, INTEL_OUTPUT_HDMI); + icl_ddi_vswing_sequence(encoder, crtc_state->port_clock, + level, INTEL_OUTPUT_HDMI); else if (IS_CANNONLAKE(dev_priv)) cnl_ddi_vswing_sequence(encoder, level, INTEL_OUTPUT_HDMI); else if (IS_GEN9_LP(dev_priv)) -- cgit v1.2.3 From 3970c65c2b47c450f917bc8a29c5849563a95dfe Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Mon, 23 Jul 2018 15:53:35 +0100 Subject: drm/i915: Skip repeated calls to i915_gem_set_wedged() If we already wedged, i915_gem_set_wedged() becomes a complicated no-op. References: https://bugs.freedesktop.org/show_bug.cgi?id=107343 Signed-off-by: Chris Wilson Reviewed-by: Rodrigo Vivi Link: https://patchwork.freedesktop.org/patch/msgid/20180723145335.24579-1-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/i915_gem.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 8b52cb768a67..a4031fab57b0 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -3312,8 +3312,8 @@ void i915_gem_set_wedged(struct drm_i915_private *i915) intel_engine_dump(engine, &p, "%s\n", engine->name); } - set_bit(I915_WEDGED, &i915->gpu_error.flags); - smp_mb__after_atomic(); + if (test_and_set_bit(I915_WEDGED, &i915->gpu_error.flags)) + goto out; /* * First, stop submission to hw, but do not yet complete requests by @@ -3372,6 +3372,7 @@ void i915_gem_set_wedged(struct drm_i915_private *i915) i915_gem_reset_finish_engine(engine); } +out: GEM_TRACE("end\n"); wake_up_all(&i915->gpu_error.reset_queue); -- cgit v1.2.3 From 4de737a26e6a251c86ff1e96667aebc5eecf9456 Mon Sep 17 00:00:00 2001 From: Nathan Ciobanu Date: Tue, 24 Jul 2018 15:33:32 -0700 Subject: drm/i915/dp: Improve clock recovery loop limit comment Clarifies the clock recovery loop limit comment that 80 max_cr_tries for pre-DP1.4 devices was chosen as a very tolerant upper bound. Assumptions made: - DP1.4 syncs should be smarter so they won't need more than 10 tries - pre-DP1.4 syncs should be compliant enough to not need that many tries (80) but we should tolerate any that may trigger this corner case Cc: Dhinakaran Pandiyan Cc: Rodrigo Vivi Cc: Marc Herbert Suggested-by: Marc Herbert Signed-off-by: Nathan Ciobanu Reviewed-by: Marc Herbert Signed-off-by: Rodrigo Vivi Link: https://patchwork.freedesktop.org/patch/msgid/1532471612-30001-1-git-send-email-nathan.d.ciobanu@linux.intel.com --- drivers/gpu/drm/i915/intel_dp_link_training.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/intel_dp_link_training.c b/drivers/gpu/drm/i915/intel_dp_link_training.c index 07e128c7443c..a9f40985a621 100644 --- a/drivers/gpu/drm/i915/intel_dp_link_training.c +++ b/drivers/gpu/drm/i915/intel_dp_link_training.c @@ -172,10 +172,12 @@ intel_dp_link_training_clock_recovery(struct intel_dp *intel_dp) } /* - * DP 1.4 spec clock recovery retries defined but - * for devices pre-DP 1.4 we set the retry limit - * to 4 (voltage levels) x 4 (preemphasis levels) x - * x 5 (same voltage retries) = 80 (max iterations) + * The DP 1.4 spec defines the max clock recovery retries value + * as 10 but for pre-DP 1.4 devices we set a very tolerant + * retry limit of 80 (4 voltage levels x 4 preemphasis levels x + * x 5 identical voltage retries). Since the previous specs didn't + * define a limit and created the possibility of an infinite loop + * we want to prevent any sync from triggering that corner case. */ if (intel_dp->dpcd[DP_DPCD_REV] >= DP_DPCD_REV_14) max_cr_tries = 10; -- cgit v1.2.3 From b9fcddab4afbac67660410009828eae83b6f3a36 Mon Sep 17 00:00:00 2001 From: Paulo Zanoni Date: Wed, 25 Jul 2018 12:59:27 -0700 Subject: drm/i915/icl: implement icl_digital_port_connected() Do like the other functions and check for the status bits. The "Hot Plug Detection" page from our documentation says we can't just use the ISR bits on the CPU side (North Display, which has the TC and TBT modes), so use the correct register: DFLEXDPSP, TC Live State field. v2: Rebase. v3: - Simplify true/false assignment (Rodrigo). - Reorganize is_gen if ladder (Rodrigo). - Don't use the ISR for TC/TBT CPU bits. v4: - Improve commit message wording (Lucas). v5: - COMMIT_LOG_LONG_LINE (Checkpatch). Cc: Animesh Manna Cc: Rodrigo Vivi Cc: Lucas De Marchi Reviewed-by: Lucas De Marchi (v3). Signed-off-by: Rodrigo Vivi Signed-off-by: Paulo Zanoni Link: https://patchwork.freedesktop.org/patch/msgid/20180725195927.12059-1-paulo.r.zanoni@intel.com --- drivers/gpu/drm/i915/i915_reg.h | 8 ++++++ drivers/gpu/drm/i915/intel_dp.c | 55 ++++++++++++++++++++++++++++++++++++++++- 2 files changed, 62 insertions(+), 1 deletion(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 477e694b8cc4..93de6f724e77 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -7254,6 +7254,7 @@ enum { #define GEN11_TC3_HOTPLUG (1 << 18) #define GEN11_TC2_HOTPLUG (1 << 17) #define GEN11_TC1_HOTPLUG (1 << 16) +#define GEN11_TC_HOTPLUG(tc_port) (1 << ((tc_port) + 16)) #define GEN11_DE_TC_HOTPLUG_MASK (GEN11_TC4_HOTPLUG | \ GEN11_TC3_HOTPLUG | \ GEN11_TC2_HOTPLUG | \ @@ -7262,6 +7263,7 @@ enum { #define GEN11_TBT3_HOTPLUG (1 << 2) #define GEN11_TBT2_HOTPLUG (1 << 1) #define GEN11_TBT1_HOTPLUG (1 << 0) +#define GEN11_TBT_HOTPLUG(tc_port) (1 << (tc_port)) #define GEN11_DE_TBT_HOTPLUG_MASK (GEN11_TBT4_HOTPLUG | \ GEN11_TBT3_HOTPLUG | \ GEN11_TBT2_HOTPLUG | \ @@ -7634,6 +7636,8 @@ enum { #define SDE_GMBUS_ICP (1 << 23) #define SDE_DDIB_HOTPLUG_ICP (1 << 17) #define SDE_DDIA_HOTPLUG_ICP (1 << 16) +#define SDE_TC_HOTPLUG_ICP(tc_port) (1 << ((tc_port) + 24)) +#define SDE_DDI_HOTPLUG_ICP(port) (1 << ((port) + 16)) #define SDE_DDI_MASK_ICP (SDE_DDIB_HOTPLUG_ICP | \ SDE_DDIA_HOTPLUG_ICP) #define SDE_TC_MASK_ICP (SDE_TC4_HOTPLUG_ICP | \ @@ -10698,4 +10702,8 @@ enum skl_power_gate { _ICL_DSC1_RC_BUF_THRESH_1_UDW_PB, \ _ICL_DSC1_RC_BUF_THRESH_1_UDW_PC) +#define PORT_TX_DFLEXDPSP _MMIO(0x1638A0) +#define TC_LIVE_STATE_TBT(tc_port) (1 << ((tc_port) * 8 + 6)) +#define TC_LIVE_STATE_TC(tc_port) (1 << ((tc_port) * 8 + 5)) + #endif /* _I915_REG_H_ */ diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index cd0f649b57a5..998d698788f9 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -4586,6 +4586,57 @@ static bool bxt_digital_port_connected(struct intel_encoder *encoder) return I915_READ(GEN8_DE_PORT_ISR) & bit; } +static bool icl_combo_port_connected(struct drm_i915_private *dev_priv, + struct intel_digital_port *intel_dig_port) +{ + enum port port = intel_dig_port->base.port; + + return I915_READ(SDEISR) & SDE_DDI_HOTPLUG_ICP(port); +} + +static bool icl_tc_port_connected(struct drm_i915_private *dev_priv, + struct intel_digital_port *intel_dig_port) +{ + enum port port = intel_dig_port->base.port; + enum tc_port tc_port = intel_port_to_tc(dev_priv, port); + bool is_legacy, is_typec, is_tbt; + u32 dpsp; + + is_legacy = I915_READ(SDEISR) & SDE_TC_HOTPLUG_ICP(tc_port); + + /* + * The spec says we shouldn't be using the ISR bits for detecting + * between TC and TBT. We should use DFLEXDPSP. + */ + dpsp = I915_READ(PORT_TX_DFLEXDPSP); + is_typec = dpsp & TC_LIVE_STATE_TC(tc_port); + is_tbt = dpsp & TC_LIVE_STATE_TBT(tc_port); + + WARN_ON(is_legacy + is_typec + is_tbt > 1); + + return is_legacy || is_typec || is_tbt; +} + +static bool icl_digital_port_connected(struct intel_encoder *encoder) +{ + struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); + struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base); + + switch (encoder->hpd_pin) { + case HPD_PORT_A: + case HPD_PORT_B: + return icl_combo_port_connected(dev_priv, dig_port); + case HPD_PORT_C: + case HPD_PORT_D: + case HPD_PORT_E: + case HPD_PORT_F: + return icl_tc_port_connected(dev_priv, dig_port); + default: + MISSING_CASE(encoder->hpd_pin); + return false; + } +} + /* * intel_digital_port_connected - is the specified port connected? * @encoder: intel_encoder @@ -4613,8 +4664,10 @@ bool intel_digital_port_connected(struct intel_encoder *encoder) return bdw_digital_port_connected(encoder); else if (IS_GEN9_LP(dev_priv)) return bxt_digital_port_connected(encoder); - else + else if (IS_GEN9_BC(dev_priv) || IS_GEN10(dev_priv)) return spt_digital_port_connected(encoder); + else + return icl_digital_port_connected(encoder); } static struct edid * -- cgit v1.2.3 From 6075546f57f8fb56a95070adf9602687a01fd49b Mon Sep 17 00:00:00 2001 From: Paulo Zanoni Date: Tue, 24 Jul 2018 17:28:10 -0700 Subject: drm/i915/icl: store the port type for TC ports The type is detected based on the live status bits. Once detected, it's not supposed to be changed, so we have some sanity checks for that. v2: Rebase. Cc: Animesh Manna Reviewed-by: Rodrigo Vivi Signed-off-by: Rodrigo Vivi Signed-off-by: Paulo Zanoni Link: https://patchwork.freedesktop.org/patch/msgid/20180725002813.6938-3-paulo.r.zanoni@intel.com --- drivers/gpu/drm/i915/intel_display.h | 7 +++++++ drivers/gpu/drm/i915/intel_dp.c | 40 ++++++++++++++++++++++++++++++++++-- drivers/gpu/drm/i915/intel_drv.h | 1 + 3 files changed, 46 insertions(+), 2 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/intel_display.h b/drivers/gpu/drm/i915/intel_display.h index 9292001cdd14..0a79a46d5805 100644 --- a/drivers/gpu/drm/i915/intel_display.h +++ b/drivers/gpu/drm/i915/intel_display.h @@ -137,6 +137,13 @@ enum tc_port { I915_MAX_TC_PORTS }; +enum tc_port_type { + TC_PORT_UNKNOWN = 0, + TC_PORT_TYPEC, + TC_PORT_TBT, + TC_PORT_LEGACY, +}; + enum dpio_channel { DPIO_CH0, DPIO_CH1 diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 998d698788f9..90c5ba6b222b 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -4594,6 +4594,38 @@ static bool icl_combo_port_connected(struct drm_i915_private *dev_priv, return I915_READ(SDEISR) & SDE_DDI_HOTPLUG_ICP(port); } +static void icl_update_tc_port_type(struct drm_i915_private *dev_priv, + struct intel_digital_port *intel_dig_port, + bool is_legacy, bool is_typec, bool is_tbt) +{ + enum port port = intel_dig_port->base.port; + enum tc_port_type old_type = intel_dig_port->tc_type; + const char *type_str; + + WARN_ON(is_legacy + is_typec + is_tbt != 1); + + if (is_legacy) { + intel_dig_port->tc_type = TC_PORT_LEGACY; + type_str = "legacy"; + } else if (is_typec) { + intel_dig_port->tc_type = TC_PORT_TYPEC; + type_str = "typec"; + } else if (is_tbt) { + intel_dig_port->tc_type = TC_PORT_TBT; + type_str = "tbt"; + } else { + return; + } + + /* Types are not supposed to be changed at runtime. */ + WARN_ON(old_type != TC_PORT_UNKNOWN && + old_type != intel_dig_port->tc_type); + + if (old_type != intel_dig_port->tc_type) + DRM_DEBUG_KMS("Port %c has TC type %s\n", port_name(port), + type_str); +} + static bool icl_tc_port_connected(struct drm_i915_private *dev_priv, struct intel_digital_port *intel_dig_port) { @@ -4612,9 +4644,13 @@ static bool icl_tc_port_connected(struct drm_i915_private *dev_priv, is_typec = dpsp & TC_LIVE_STATE_TC(tc_port); is_tbt = dpsp & TC_LIVE_STATE_TBT(tc_port); - WARN_ON(is_legacy + is_typec + is_tbt > 1); + if (!is_legacy && !is_typec && !is_tbt) + return false; + + icl_update_tc_port_type(dev_priv, intel_dig_port, is_legacy, is_typec, + is_tbt); - return is_legacy || is_typec || is_tbt; + return true; } static bool icl_digital_port_connected(struct intel_encoder *encoder) diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index c275f91244a6..5e225d8ba09a 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -1164,6 +1164,7 @@ struct intel_digital_port { bool release_cl2_override; uint8_t max_lanes; enum intel_display_power_domain ddi_io_power_domain; + enum tc_port_type tc_type; void (*write_infoframe)(struct drm_encoder *encoder, const struct intel_crtc_state *crtc_state, -- cgit v1.2.3 From db7295c2c4efb56efab7f6fe0fc3c646d200630a Mon Sep 17 00:00:00 2001 From: Animesh Manna Date: Tue, 24 Jul 2018 17:28:11 -0700 Subject: drm/i915/icl: Update FIA supported lane count for hpd. In ICL, Flexible IO Adapter (FIA) muxes data and clocks of USB 3.1, tbt and display controller. In DP alt mode FIA configure the number of lanes and will be used apart from DPCD read to calculate max available lanes for DP enablement. v2 (from Paulo): Simple rebase. Reviewed-by: Anusha Srivatsa (v1). Reviewed-by: Rodrigo Vivi Signed-off-by: Animesh Manna [Paulo: significant rewrite of the patch.] Signed-off-by: Paulo Zanoni Link: https://patchwork.freedesktop.org/patch/msgid/20180725002813.6938-4-paulo.r.zanoni@intel.com --- drivers/gpu/drm/i915/i915_reg.h | 3 +++ drivers/gpu/drm/i915/intel_dp.c | 33 ++++++++++++++++++++++++++++++++- 2 files changed, 35 insertions(+), 1 deletion(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 93de6f724e77..72acecaad5c1 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -10705,5 +10705,8 @@ enum skl_power_gate { #define PORT_TX_DFLEXDPSP _MMIO(0x1638A0) #define TC_LIVE_STATE_TBT(tc_port) (1 << ((tc_port) * 8 + 6)) #define TC_LIVE_STATE_TC(tc_port) (1 << ((tc_port) * 8 + 5)) +#define DP_LANE_ASSIGNMENT_SHIFT(tc_port) ((tc_port) * 8) +#define DP_LANE_ASSIGNMENT_MASK(tc_port) (0xf << ((tc_port) * 8)) +#define DP_LANE_ASSIGNMENT(tc_port, x) ((x) << ((tc_port) * 8)) #endif /* _I915_REG_H_ */ diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 90c5ba6b222b..bb59e71d6f9c 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -176,14 +176,45 @@ static int intel_dp_max_common_rate(struct intel_dp *intel_dp) return intel_dp->common_rates[intel_dp->num_common_rates - 1]; } +static int intel_dp_get_fia_supported_lane_count(struct intel_dp *intel_dp) +{ + struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); + struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev); + enum tc_port tc_port = intel_port_to_tc(dev_priv, dig_port->base.port); + u32 lane_info; + + if (tc_port == PORT_TC_NONE || dig_port->tc_type != TC_PORT_TYPEC) + return 4; + + lane_info = (I915_READ(PORT_TX_DFLEXDPSP) & + DP_LANE_ASSIGNMENT_MASK(tc_port)) >> + DP_LANE_ASSIGNMENT_SHIFT(tc_port); + + switch (lane_info) { + default: + MISSING_CASE(lane_info); + case 1: + case 2: + case 4: + case 8: + return 1; + case 3: + case 12: + return 2; + case 15: + return 4; + } +} + /* Theoretical max between source and sink */ static int intel_dp_max_common_lane_count(struct intel_dp *intel_dp) { struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); int source_max = intel_dig_port->max_lanes; int sink_max = drm_dp_max_lane_count(intel_dp->dpcd); + int fia_max = intel_dp_get_fia_supported_lane_count(intel_dp); - return min(source_max, sink_max); + return min3(source_max, sink_max, fia_max); } int intel_dp_max_lane_count(struct intel_dp *intel_dp) -- cgit v1.2.3 From 340a44bef2342b0ff7334017e9e821645fa8ae43 Mon Sep 17 00:00:00 2001 From: Paulo Zanoni Date: Tue, 24 Jul 2018 17:28:12 -0700 Subject: drm/i915/icl: program MG_DP_MODE Programming this register is part of the Enable Sequence for DisplayPort on ICL. Do as the spec says. v2: Simple rebase. Cc: Animesh Manna Reviewed-by: Maarten Lankhorst (v1) Signed-off-by: Paulo Zanoni Link: https://patchwork.freedesktop.org/patch/msgid/20180725002813.6938-5-paulo.r.zanoni@intel.com --- drivers/gpu/drm/i915/i915_reg.h | 15 +++++++++ drivers/gpu/drm/i915/intel_ddi.c | 2 ++ drivers/gpu/drm/i915/intel_dp.c | 66 ++++++++++++++++++++++++++++++++++++++++ drivers/gpu/drm/i915/intel_drv.h | 1 + 4 files changed, 84 insertions(+) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 72acecaad5c1..cf1d2bbb0613 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -2092,6 +2092,21 @@ enum i915_power_well_id { #define CFG_AMI_CK_DIV_OVERRIDE_VAL_MASK (0x3 << 25) #define CFG_AMI_CK_DIV_OVERRIDE_EN (1 << 24) +#define MG_DP_MODE_LN0_ACU_PORT1 0x1683A0 +#define MG_DP_MODE_LN1_ACU_PORT1 0x1687A0 +#define MG_DP_MODE_LN0_ACU_PORT2 0x1693A0 +#define MG_DP_MODE_LN1_ACU_PORT2 0x1697A0 +#define MG_DP_MODE_LN0_ACU_PORT3 0x16A3A0 +#define MG_DP_MODE_LN1_ACU_PORT3 0x16A7A0 +#define MG_DP_MODE_LN0_ACU_PORT4 0x16B3A0 +#define MG_DP_MODE_LN1_ACU_PORT4 0x16B7A0 +#define MG_DP_MODE(port, ln) \ + MG_PHY_PORT_LN(port, ln, MG_DP_MODE_LN0_ACU_PORT1, \ + MG_DP_MODE_LN0_ACU_PORT2, \ + MG_DP_MODE_LN1_ACU_PORT1) +#define MG_DP_MODE_CFG_DP_X2_MODE (1 << 7) +#define MG_DP_MODE_CFG_DP_X1_MODE (1 << 6) + /* The spec defines this only for BXT PHY0, but lets assume that this * would exist for PHY1 too if it had a second channel. */ diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index 01c07a000464..399c438bd210 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -2809,6 +2809,8 @@ static void intel_ddi_pre_enable_dp(struct intel_encoder *encoder, intel_display_power_get(dev_priv, dig_port->ddi_io_power_domain); + icl_program_mg_dp_mode(intel_dp); + if (IS_ICELAKE(dev_priv)) icl_ddi_vswing_sequence(encoder, crtc_state->port_clock, level, encoder->type); diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index bb59e71d6f9c..28de73be4507 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -229,6 +229,72 @@ intel_dp_link_required(int pixel_clock, int bpp) return DIV_ROUND_UP(pixel_clock * bpp, 8); } +void icl_program_mg_dp_mode(struct intel_dp *intel_dp) +{ + struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); + struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp)); + enum port port = intel_dig_port->base.port; + enum tc_port tc_port = intel_port_to_tc(dev_priv, port); + u32 ln0, ln1, lane_info; + + if (tc_port == PORT_TC_NONE || intel_dig_port->tc_type == TC_PORT_TBT) + return; + + ln0 = I915_READ(MG_DP_MODE(port, 0)); + ln1 = I915_READ(MG_DP_MODE(port, 1)); + + switch (intel_dig_port->tc_type) { + case TC_PORT_TYPEC: + ln0 &= ~(MG_DP_MODE_CFG_DP_X1_MODE | MG_DP_MODE_CFG_DP_X2_MODE); + ln1 &= ~(MG_DP_MODE_CFG_DP_X1_MODE | MG_DP_MODE_CFG_DP_X2_MODE); + + lane_info = (I915_READ(PORT_TX_DFLEXDPSP) & + DP_LANE_ASSIGNMENT_MASK(tc_port)) >> + DP_LANE_ASSIGNMENT_SHIFT(tc_port); + + switch (lane_info) { + case 0x1: + case 0x4: + break; + case 0x2: + ln0 |= MG_DP_MODE_CFG_DP_X1_MODE; + break; + case 0x3: + ln0 |= MG_DP_MODE_CFG_DP_X1_MODE | + MG_DP_MODE_CFG_DP_X2_MODE; + break; + case 0x8: + ln1 |= MG_DP_MODE_CFG_DP_X1_MODE; + break; + case 0xC: + ln1 |= MG_DP_MODE_CFG_DP_X1_MODE | + MG_DP_MODE_CFG_DP_X2_MODE; + break; + case 0xF: + ln0 |= MG_DP_MODE_CFG_DP_X1_MODE | + MG_DP_MODE_CFG_DP_X2_MODE; + ln1 |= MG_DP_MODE_CFG_DP_X1_MODE | + MG_DP_MODE_CFG_DP_X2_MODE; + break; + default: + MISSING_CASE(lane_info); + } + break; + + case TC_PORT_LEGACY: + ln0 |= MG_DP_MODE_CFG_DP_X1_MODE | MG_DP_MODE_CFG_DP_X2_MODE; + ln1 |= MG_DP_MODE_CFG_DP_X1_MODE | MG_DP_MODE_CFG_DP_X2_MODE; + break; + + default: + MISSING_CASE(intel_dig_port->tc_type); + return; + } + + I915_WRITE(MG_DP_MODE(port, 0), ln0); + I915_WRITE(MG_DP_MODE(port, 1), ln1); +} + int intel_dp_max_data_rate(int max_link_clock, int max_lanes) { diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 5e225d8ba09a..4e5b00052b5b 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -1714,6 +1714,7 @@ void intel_edp_drrs_invalidate(struct drm_i915_private *dev_priv, unsigned int frontbuffer_bits); void intel_edp_drrs_flush(struct drm_i915_private *dev_priv, unsigned int frontbuffer_bits); +void icl_program_mg_dp_mode(struct intel_dp *intel_dp); void intel_dp_program_link_training_pattern(struct intel_dp *intel_dp, -- cgit v1.2.3 From bc334d914eeee02eddefd7be533acafd9a042ade Mon Sep 17 00:00:00 2001 From: Paulo Zanoni Date: Tue, 24 Jul 2018 17:28:13 -0700 Subject: drm/i915/icl: toggle PHY clock gating around link training The Gen11 TypeC PHY DDI Buffer chapter, PHY Clock Gating Programming section says that PHY clock gating should be disabled before starting voltage swing programming, then enabled after any link training is complete. v2: Simple rebase. Cc: Animesh Manna Cc: Manasi Navare Reviewed-by: Maarten Lankhorst (v1) Signed-off-by: Paulo Zanoni Link: https://patchwork.freedesktop.org/patch/msgid/20180725002813.6938-6-paulo.r.zanoni@intel.com --- drivers/gpu/drm/i915/i915_reg.h | 20 ++++++++++++ drivers/gpu/drm/i915/intel_ddi.c | 3 ++ drivers/gpu/drm/i915/intel_dp.c | 66 ++++++++++++++++++++++++++++++++++++++++ drivers/gpu/drm/i915/intel_drv.h | 2 ++ 4 files changed, 91 insertions(+) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index cf1d2bbb0613..5530c470f30d 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -2106,6 +2106,26 @@ enum i915_power_well_id { MG_DP_MODE_LN1_ACU_PORT1) #define MG_DP_MODE_CFG_DP_X2_MODE (1 << 7) #define MG_DP_MODE_CFG_DP_X1_MODE (1 << 6) +#define MG_DP_MODE_CFG_TR2PWR_GATING (1 << 5) +#define MG_DP_MODE_CFG_TRPWR_GATING (1 << 4) +#define MG_DP_MODE_CFG_CLNPWR_GATING (1 << 3) +#define MG_DP_MODE_CFG_DIGPWR_GATING (1 << 2) +#define MG_DP_MODE_CFG_GAONPWR_GATING (1 << 1) + +#define MG_MISC_SUS0_PORT1 0x168814 +#define MG_MISC_SUS0_PORT2 0x169814 +#define MG_MISC_SUS0_PORT3 0x16A814 +#define MG_MISC_SUS0_PORT4 0x16B814 +#define MG_MISC_SUS0(tc_port) \ + _MMIO(_PORT(tc_port, MG_MISC_SUS0_PORT1, MG_MISC_SUS0_PORT2)) +#define MG_MISC_SUS0_SUSCLK_DYNCLKGATE_MODE_MASK (3 << 14) +#define MG_MISC_SUS0_SUSCLK_DYNCLKGATE_MODE(x) ((x) << 14) +#define MG_MISC_SUS0_CFG_TR2PWR_GATING (1 << 12) +#define MG_MISC_SUS0_CFG_CL2PWR_GATING (1 << 11) +#define MG_MISC_SUS0_CFG_GAONPWR_GATING (1 << 10) +#define MG_MISC_SUS0_CFG_TRPWR_GATING (1 << 7) +#define MG_MISC_SUS0_CFG_CL1PWR_GATING (1 << 6) +#define MG_MISC_SUS0_CFG_DGPWR_GATING (1 << 5) /* The spec defines this only for BXT PHY0, but lets assume that this * would exist for PHY1 too if it had a second channel. diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index 399c438bd210..0adc043529f2 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -2810,6 +2810,7 @@ static void intel_ddi_pre_enable_dp(struct intel_encoder *encoder, intel_display_power_get(dev_priv, dig_port->ddi_io_power_domain); icl_program_mg_dp_mode(intel_dp); + icl_disable_phy_clock_gating(dig_port); if (IS_ICELAKE(dev_priv)) icl_ddi_vswing_sequence(encoder, crtc_state->port_clock, @@ -2828,6 +2829,8 @@ static void intel_ddi_pre_enable_dp(struct intel_encoder *encoder, if (port != PORT_A || INTEL_GEN(dev_priv) >= 9) intel_dp_stop_link_train(intel_dp); + icl_enable_phy_clock_gating(dig_port); + intel_ddi_enable_pipe_clock(crtc_state); } diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 28de73be4507..cc33d7c6ba19 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -295,6 +295,72 @@ void icl_program_mg_dp_mode(struct intel_dp *intel_dp) I915_WRITE(MG_DP_MODE(port, 1), ln1); } +void icl_enable_phy_clock_gating(struct intel_digital_port *dig_port) +{ + struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev); + enum port port = dig_port->base.port; + enum tc_port tc_port = intel_port_to_tc(dev_priv, port); + i915_reg_t mg_regs[2] = { MG_DP_MODE(port, 0), MG_DP_MODE(port, 1) }; + u32 val; + int i; + + if (tc_port == PORT_TC_NONE) + return; + + for (i = 0; i < ARRAY_SIZE(mg_regs); i++) { + val = I915_READ(mg_regs[i]); + val |= MG_DP_MODE_CFG_TR2PWR_GATING | + MG_DP_MODE_CFG_TRPWR_GATING | + MG_DP_MODE_CFG_CLNPWR_GATING | + MG_DP_MODE_CFG_DIGPWR_GATING | + MG_DP_MODE_CFG_GAONPWR_GATING; + I915_WRITE(mg_regs[i], val); + } + + val = I915_READ(MG_MISC_SUS0(tc_port)); + val |= MG_MISC_SUS0_SUSCLK_DYNCLKGATE_MODE(3) | + MG_MISC_SUS0_CFG_TR2PWR_GATING | + MG_MISC_SUS0_CFG_CL2PWR_GATING | + MG_MISC_SUS0_CFG_GAONPWR_GATING | + MG_MISC_SUS0_CFG_TRPWR_GATING | + MG_MISC_SUS0_CFG_CL1PWR_GATING | + MG_MISC_SUS0_CFG_DGPWR_GATING; + I915_WRITE(MG_MISC_SUS0(tc_port), val); +} + +void icl_disable_phy_clock_gating(struct intel_digital_port *dig_port) +{ + struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev); + enum port port = dig_port->base.port; + enum tc_port tc_port = intel_port_to_tc(dev_priv, port); + i915_reg_t mg_regs[2] = { MG_DP_MODE(port, 0), MG_DP_MODE(port, 1) }; + u32 val; + int i; + + if (tc_port == PORT_TC_NONE) + return; + + for (i = 0; i < ARRAY_SIZE(mg_regs); i++) { + val = I915_READ(mg_regs[i]); + val &= ~(MG_DP_MODE_CFG_TR2PWR_GATING | + MG_DP_MODE_CFG_TRPWR_GATING | + MG_DP_MODE_CFG_CLNPWR_GATING | + MG_DP_MODE_CFG_DIGPWR_GATING | + MG_DP_MODE_CFG_GAONPWR_GATING); + I915_WRITE(mg_regs[i], val); + } + + val = I915_READ(MG_MISC_SUS0(tc_port)); + val &= ~(MG_MISC_SUS0_SUSCLK_DYNCLKGATE_MODE_MASK | + MG_MISC_SUS0_CFG_TR2PWR_GATING | + MG_MISC_SUS0_CFG_CL2PWR_GATING | + MG_MISC_SUS0_CFG_GAONPWR_GATING | + MG_MISC_SUS0_CFG_TRPWR_GATING | + MG_MISC_SUS0_CFG_CL1PWR_GATING | + MG_MISC_SUS0_CFG_DGPWR_GATING); + I915_WRITE(MG_MISC_SUS0(tc_port), val); +} + int intel_dp_max_data_rate(int max_link_clock, int max_lanes) { diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 4e5b00052b5b..99a5f5be5b82 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -1715,6 +1715,8 @@ void intel_edp_drrs_invalidate(struct drm_i915_private *dev_priv, void intel_edp_drrs_flush(struct drm_i915_private *dev_priv, unsigned int frontbuffer_bits); void icl_program_mg_dp_mode(struct intel_dp *intel_dp); +void icl_enable_phy_clock_gating(struct intel_digital_port *dig_port); +void icl_disable_phy_clock_gating(struct intel_digital_port *dig_port); void intel_dp_program_link_training_pattern(struct intel_dp *intel_dp, -- cgit v1.2.3 From 45ef40aab72e21eb81147a6e8a2bca863f0234fd Mon Sep 17 00:00:00 2001 From: Dhinakaran Pandiyan Date: Wed, 18 Jul 2018 10:19:42 -0700 Subject: drm/i915/mst: Do not retrain new links The short pulse handler checks if channel equalization is okay and goes onto retrain a link if there are active MST links. This retraining path is not meant for new MST connections, but due to a bug elsewhere, if active_mst_links is < 0 the boolean check for active_mst_links passes and we proceed to retrain a new link. This results in a sequence of failed link training attempts, most likely due to the hardware not setup for link training at that point i.e., missing the DDI pre_enable sequence. [ 80.301272] [drm:intel_dp_check_mst_status] channel EQ not ok, retraining [ 80.301312] [drm:intel_ddi_prepare_link_retrain] *ERROR* Timeout waiting for DDI BUF C idle bit The above error gives us a hint something went wrong before link training started. Check for a positive value of active_mst_links and throw in a warning for invalid active_mst_links as debug aid. Cc: Nathan Ciobanu Cc: Rodrigo Vivi Signed-off-by: Dhinakaran Pandiyan Tested-by: Nathan Ciobanu Reviewed-by: Rodrigo Vivi Link: https://patchwork.freedesktop.org/patch/msgid/20180718171943.3246-1-dhinakaran.pandiyan@intel.com --- drivers/gpu/drm/i915/intel_dp.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index cc33d7c6ba19..ac59590b281b 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -4253,12 +4253,14 @@ intel_dp_check_mst_status(struct intel_dp *intel_dp) int ret = 0; int retry; bool handled; + + WARN_ON_ONCE(intel_dp->active_mst_links < 0); bret = intel_dp_get_sink_irq_esi(intel_dp, esi); go_again: if (bret == true) { /* check link status - esi[10] = 0x200c */ - if (intel_dp->active_mst_links && + if (intel_dp->active_mst_links > 0 && !drm_dp_channel_eq_ok(&esi[10], intel_dp->lane_count)) { DRM_DEBUG_KMS("channel EQ not ok, retraining\n"); intel_dp_start_link_train(intel_dp); -- cgit v1.2.3 From 65172699a8bd9956705f71fb8b66b1068a1bb5cd Mon Sep 17 00:00:00 2001 From: Dhinakaran Pandiyan Date: Wed, 18 Jul 2018 10:19:43 -0700 Subject: drm/i915/mst: Continue state updates even if AUX writes fail. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit We are too late in the enabling sequence to back out cleanly, not updating state tracking variables, like intel_dp->active_mst_links in this instance, results in incorrect behaviour further along. v2: Fixed int v/s bool comparison Cc: Ville Syrjälä Cc: Rodrigo Vivi Cc: Nathan Ciobanu Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107281 Signed-off-by: Dhinakaran Pandiyan Reviewed-by: Nathan Ciobanu Tested-by: Nathan Ciobanu Reviewed-by: Rodrigo Vivi Link: https://patchwork.freedesktop.org/patch/msgid/20180718171943.3246-2-dhinakaran.pandiyan@intel.com --- drivers/gpu/drm/i915/intel_dp_mst.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c index 18c65f8e4fe8..352e5216cc65 100644 --- a/drivers/gpu/drm/i915/intel_dp_mst.c +++ b/drivers/gpu/drm/i915/intel_dp_mst.c @@ -241,11 +241,8 @@ static void intel_mst_pre_enable_dp(struct intel_encoder *encoder, connector->port, pipe_config->pbn, pipe_config->dp_m_n.tu); - if (ret == false) { + if (!ret) DRM_ERROR("failed to allocate vcpi\n"); - return; - } - intel_dp->active_mst_links++; temp = I915_READ(DP_TP_STATUS(port)); -- cgit v1.2.3 From 406bc5633c6b1c7e7a86230db312ee34e785a8f1 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Thu, 26 Jul 2018 11:47:59 +0100 Subject: drm/i915: Avoid computing tile_row_size() for untiled objects i915_gem_tile_height() asserts that the object is tiled, but inside the error printer for the selftest we computed the row size regardless of tiling, tripping over the assert. Signed-off-by: Chris Wilson Reviewed-by: Matthew Auld Link: https://patchwork.freedesktop.org/patch/msgid/20180726104759.8684-1-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/selftests/i915_gem_object.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_object.c b/drivers/gpu/drm/i915/selftests/i915_gem_object.c index c69cbd5aed52..d9eca1b02aee 100644 --- a/drivers/gpu/drm/i915/selftests/i915_gem_object.c +++ b/drivers/gpu/drm/i915/selftests/i915_gem_object.c @@ -282,7 +282,7 @@ static int check_partial_mapping(struct drm_i915_gem_object *obj, view.partial.offset, view.partial.size, vma->size >> PAGE_SHIFT, - tile_row_pages(obj), + tile->tiling ? tile_row_pages(obj) : 0, vma->fence ? vma->fence->id : -1, tile->tiling, tile->stride, offset >> PAGE_SHIFT, (unsigned int)offset_in_page(offset), -- cgit v1.2.3 From d899aceb60912c9f1d7e1d7a3b388f116baf1b44 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Wed, 25 Jul 2018 16:54:47 +0100 Subject: drm/i915: Mark up object tiling-and-stride getters as const For that little bit of defense against a tired programmer. Signed-off-by: Chris Wilson Reviewed-by: Matthew Auld Link: https://patchwork.freedesktop.org/patch/msgid/20180725155447.11909-1-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/i915_gem.c | 4 ++-- drivers/gpu/drm/i915/i915_gem_object.h | 10 +++++----- 2 files changed, 7 insertions(+), 7 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index a4031fab57b0..0946e1932907 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -1911,7 +1911,7 @@ i915_gem_mmap_ioctl(struct drm_device *dev, void *data, return 0; } -static unsigned int tile_row_pages(struct drm_i915_gem_object *obj) +static unsigned int tile_row_pages(const struct drm_i915_gem_object *obj) { return i915_gem_object_get_tile_row_size(obj) >> PAGE_SHIFT; } @@ -1970,7 +1970,7 @@ int i915_gem_mmap_gtt_version(void) } static inline struct i915_ggtt_view -compute_partial_view(struct drm_i915_gem_object *obj, +compute_partial_view(const struct drm_i915_gem_object *obj, pgoff_t page_offset, unsigned int chunk) { diff --git a/drivers/gpu/drm/i915/i915_gem_object.h b/drivers/gpu/drm/i915/i915_gem_object.h index 83e5e01fa9ea..a6dd7c46de0d 100644 --- a/drivers/gpu/drm/i915/i915_gem_object.h +++ b/drivers/gpu/drm/i915/i915_gem_object.h @@ -421,19 +421,19 @@ i915_gem_object_is_framebuffer(const struct drm_i915_gem_object *obj) } static inline unsigned int -i915_gem_object_get_tiling(struct drm_i915_gem_object *obj) +i915_gem_object_get_tiling(const struct drm_i915_gem_object *obj) { return obj->tiling_and_stride & TILING_MASK; } static inline bool -i915_gem_object_is_tiled(struct drm_i915_gem_object *obj) +i915_gem_object_is_tiled(const struct drm_i915_gem_object *obj) { return i915_gem_object_get_tiling(obj) != I915_TILING_NONE; } static inline unsigned int -i915_gem_object_get_stride(struct drm_i915_gem_object *obj) +i915_gem_object_get_stride(const struct drm_i915_gem_object *obj) { return obj->tiling_and_stride & STRIDE_MASK; } @@ -446,13 +446,13 @@ i915_gem_tile_height(unsigned int tiling) } static inline unsigned int -i915_gem_object_get_tile_height(struct drm_i915_gem_object *obj) +i915_gem_object_get_tile_height(const struct drm_i915_gem_object *obj) { return i915_gem_tile_height(i915_gem_object_get_tiling(obj)); } static inline unsigned int -i915_gem_object_get_tile_row_size(struct drm_i915_gem_object *obj) +i915_gem_object_get_tile_row_size(const struct drm_i915_gem_object *obj) { return (i915_gem_object_get_stride(obj) * i915_gem_object_get_tile_height(obj)); -- cgit v1.2.3 From 52dda80d62dff39979fb407d67b7c9fc02381589 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Thu, 26 Jul 2018 09:50:31 +0100 Subject: drm/i915: Protect guc_fini_wq() against module load abort MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Prevent [ 397.873143] general protection fault: 0000 [#1] PREEMPT SMP PTI [ 397.873154] CPU: 4 PID: 4799 Comm: drv_module_relo Tainted: G U 4.18.0-rc6-CI-CI_DRM_4534+ #1 [ 397.873162] Hardware name: Micro-Star International Co., Ltd. MS-7B54/Z370M MORTAR (MS-7B54), BIOS 1.10 12/28/2017 [ 397.873175] RIP: 0010:__lock_acquire+0xf6/0x1b50 [ 397.873179] Code: 85 c0 4c 8b 9d 40 ff ff ff 8b 8d 38 ff ff ff 44 8b 8d 30 ff ff ff 4c 8b 85 28 ff ff ff 44 8b 95 24 ff ff ff 0f 84 54 03 00 00 ff 80 38 01 00 00 8b 15 45 8c 59 02 45 8b bc 24 70 08 00 00 85 [ 397.873240] RSP: 0018:ffffc90000497b40 EFLAGS: 00010002 [ 397.873246] RAX: 6b6b6b6b6b6b6b6b RBX: 0000000000000001 RCX: 0000000000000000 [ 397.873252] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000000 [ 397.873258] RBP: ffffc90000497c20 R08: ffffffff810a25e9 R09: 0000000000000000 [ 397.873264] R10: 0000000000000000 R11: ffff880255c63c28 R12: ffff8801093b2840 [ 397.873270] R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000246 [ 397.873277] FS: 00007faf88d71980(0000) GS:ffff880266300000(0000) knlGS:0000000000000000 [ 397.873284] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 397.873289] CR2: 000055d866c9ca10 CR3: 000000025472e006 CR4: 00000000003606e0 [ 397.873295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 397.873301] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 397.873308] Call Trace: [ 397.873318] ? lock_acquire+0xa6/0x210 [ 397.873323] lock_acquire+0xa6/0x210 [ 397.873331] ? drain_workqueue+0x19/0x180 [ 397.873339] __mutex_lock+0x89/0x980 [ 397.873346] ? drain_workqueue+0x19/0x180 [ 397.873352] ? _raw_spin_unlock_irqrestore+0x4c/0x60 [ 397.873359] ? trace_hardirqs_on_caller+0xe0/0x1b0 [ 397.873365] ? drain_workqueue+0x19/0x180 [ 397.873373] ? debug_object_active_state+0x127/0x150 [ 397.873381] ? drain_workqueue+0x19/0x180 [ 397.873387] drain_workqueue+0x19/0x180 [ 397.873395] destroy_workqueue+0x12/0x1f0 [ 397.873476] intel_guc_fini_misc+0x36/0x90 [i915] [ 397.873540] i915_gem_fini+0x91/0x100 [i915] [ 397.873588] i915_driver_unload+0xd2/0x110 [i915] [ 397.873638] i915_pci_remove+0x19/0x30 [i915] [ 397.873646] pci_device_remove+0x36/0xb0 [ 397.873653] device_release_driver_internal+0x185/0x250 [ 397.873660] driver_detach+0x35/0x70 [ 397.873668] bus_remove_driver+0x53/0xd0 [ 397.873675] pci_unregister_driver+0x25/0xa0 [ 397.873683] __se_sys_delete_module+0x162/0x210 [ 397.873691] ? do_syscall_64+0xd/0x190 [ 397.873697] do_syscall_64+0x55/0x190 [ 397.873704] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 397.873710] RIP: 0033:0x7faf884231b7 [ 397.873714] Code: 73 01 c3 48 8b 0d d1 8c 2c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 b0 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a1 8c 2c 00 f7 d8 64 89 01 48 [ 397.873775] RSP: 002b:00007ffda4e98cf8 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0 [ 397.873784] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007faf884231b7 [ 397.873790] RDX: 0000000000000000 RSI: 0000000000000800 RDI: 000055fbb18f1bd8 [ 397.873796] RBP: 000055fbb18f1b70 R08: 000055fbb18f1bdc R09: 00007ffda4e98d38 [ 397.873802] R10: 00007ffda4e97cf4 R11: 0000000000000206 R12: 000055fbb0d32470 [ 397.873808] R13: 00007ffda4e992e0 R14: 0000000000000000 R15: 0000000000000000 v2: It's use-after-free; not a NULL pointer. Testcase: igt/drv_module_reload/basic-reload-inject Signed-off-by: Chris Wilson Cc: Michał Winiarski Cc: Michal Wajdeczko Reviewed-by: Michał Winiarski Link: https://patchwork.freedesktop.org/patch/msgid/20180726085033.4044-1-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/intel_guc.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/intel_guc.c b/drivers/gpu/drm/i915/intel_guc.c index 846d693ecb53..3082d7670f05 100644 --- a/drivers/gpu/drm/i915/intel_guc.c +++ b/drivers/gpu/drm/i915/intel_guc.c @@ -128,13 +128,15 @@ static int guc_init_wq(struct intel_guc *guc) static void guc_fini_wq(struct intel_guc *guc) { - struct drm_i915_private *dev_priv = guc_to_i915(guc); + struct workqueue_struct *wq; - if (HAS_LOGICAL_RING_PREEMPTION(dev_priv) && - USES_GUC_SUBMISSION(dev_priv)) - destroy_workqueue(guc->preempt_wq); + wq = fetch_and_zero(&guc->preempt_wq); + if (wq) + destroy_workqueue(wq); - destroy_workqueue(guc->log.relay.flush_wq); + wq = fetch_and_zero(&guc->log.relay.flush_wq); + if (wq) + destroy_workqueue(wq); } int intel_guc_init_misc(struct intel_guc *guc) -- cgit v1.2.3 From 7ed43df720c007d60bee6d81da07bcdc7e4a55ae Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Thu, 26 Jul 2018 09:50:32 +0100 Subject: drm/i915: Restore sane defaults for KMS on GEM error load MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit If we fail during GEM initialisation, we scrub the HW state by performing a device level GPU resuet. However, we want to leave the system in a usable state (with functioning KMS but no GEM) so after scrubbing the HW state, we need to restore some sane defaults and re-enable the low-level common parts of the GPU (such as the GMCH). v2: Restore GTT entries. Signed-off-by: Chris Wilson Link: https://patchwork.freedesktop.org/patch/msgid/20180726085033.4044-2-chris@chris-wilson.co.uk Reviewed-by: Michał Winiarski --- drivers/gpu/drm/i915/i915_gem.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 0946e1932907..3ca6a3364085 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -5598,6 +5598,8 @@ err_uc_misc: i915_gem_cleanup_userptr(dev_priv); if (ret == -EIO) { + mutex_lock(&dev_priv->drm.struct_mutex); + /* * Allow engine initialisation to fail by marking the GPU as * wedged. But we only want to do this where the GPU is angry, @@ -5608,7 +5610,14 @@ err_uc_misc: "Failed to initialize GPU, declaring it wedged!\n"); i915_gem_set_wedged(dev_priv); } - ret = 0; + + /* Minimal basic recovery for KMS */ + ret = i915_ggtt_enable_hw(dev_priv); + i915_gem_restore_gtt_mappings(dev_priv); + i915_gem_restore_fences(dev_priv); + intel_init_clock_gating(dev_priv); + + mutex_unlock(&dev_priv->drm.struct_mutex); } i915_gem_drain_freed_objects(dev_priv); -- cgit v1.2.3 From ec5b65a97c60f482bd23d513ce8c398797d40156 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Thu, 26 Jul 2018 09:50:33 +0100 Subject: drm/i915: Don't disable the GPU for older gen on wedging MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit If we issue a device level GPU reset on the older gen, it will disable key components of the GMCH and the display engine. The purpose of wedging is to simply prevent further GEM usage without disabling KMS, so we need to be careful when we do issue the reset on wedging. Signed-off-by: Chris Wilson Link: https://patchwork.freedesktop.org/patch/msgid/20180726085033.4044-3-chris@chris-wilson.co.uk Reviewed-by: Michał Winiarski --- drivers/gpu/drm/i915/i915_gem.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 3ca6a3364085..460f256114f7 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -3329,7 +3329,8 @@ void i915_gem_set_wedged(struct drm_i915_private *i915) i915->caps.scheduler = 0; /* Even if the GPU reset fails, it should still stop the engines */ - intel_gpu_reset(i915, ALL_ENGINES); + if (INTEL_GEN(i915) >= 5) + intel_gpu_reset(i915, ALL_ENGINES); /* * Make sure no one is running the old callback before we proceed with -- cgit v1.2.3 From ab84a110490d38d40780113a1cdfce03b1cdec13 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Thu, 19 Jul 2018 20:47:45 +0100 Subject: drm/i915/selftests: Use a full emulation of a user ppgtt context To test eviction from a ppgtt, we just want a ppgtt i.e. something other than the Global GTT which is shared and used by the kernel for HW features like fencing and scanout. However, we also need it to pass !i915_is_ggtt() and the simplest way is to emulate a full user context rather than the internal kernel context that is used for the GGTT. Signed-off-by: Chris Wilson Reviewed-by: Matthew Auld Link: https://patchwork.freedesktop.org/patch/msgid/20180719194746.19111-1-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/selftests/intel_hangcheck.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/selftests/intel_hangcheck.c b/drivers/gpu/drm/i915/selftests/intel_hangcheck.c index 65d66cdedd26..b2d6d15f025a 100644 --- a/drivers/gpu/drm/i915/selftests/intel_hangcheck.c +++ b/drivers/gpu/drm/i915/selftests/intel_hangcheck.c @@ -1144,19 +1144,27 @@ static int igt_reset_evict_ppgtt(void *arg) { struct drm_i915_private *i915 = arg; struct i915_gem_context *ctx; + struct drm_file *file; int err; + file = mock_file(i915); + if (IS_ERR(file)) + return PTR_ERR(file); + mutex_lock(&i915->drm.struct_mutex); - ctx = kernel_context(i915); + ctx = live_context(i915, file); mutex_unlock(&i915->drm.struct_mutex); - if (IS_ERR(ctx)) - return PTR_ERR(ctx); + if (IS_ERR(ctx)) { + err = PTR_ERR(ctx); + goto out; + } err = 0; if (ctx->ppgtt) /* aliasing == global gtt locking, covered above */ err = __igt_reset_evict_vma(i915, &ctx->ppgtt->vm); - kernel_context_close(ctx); +out: + mock_file_free(i915, file); return err; } -- cgit v1.2.3 From 6dc17d69f83ec315157b76fbf47d4379e1266cef Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Thu, 19 Jul 2018 20:47:46 +0100 Subject: drm/i915/selftests: Exercise resetting in the middle of a wait-on-fence On older HW, gen2/3, fence registers are used for detiling GPU commands and as such changing those registers requires serialisation with the requests on the GPU. Anything running on the GPU is subject to a hang, and so we must be able to recover cleanly in the middle of a stuck wait on a fence register. We can simulate using the fence on the GPU simply by marking the fence as active on the request for this vma, the interface being common to all gen, thus broadening the test. Signed-off-by: Chris Wilson Cc: Tvrtko Ursulin Reviewed-by: Matthew Auld Link: https://patchwork.freedesktop.org/patch/msgid/20180719194746.19111-2-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/selftests/intel_hangcheck.c | 85 +++++++++++++++++++++--- 1 file changed, 77 insertions(+), 8 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/selftests/intel_hangcheck.c b/drivers/gpu/drm/i915/selftests/intel_hangcheck.c index b2d6d15f025a..db378226ac10 100644 --- a/drivers/gpu/drm/i915/selftests/intel_hangcheck.c +++ b/drivers/gpu/drm/i915/selftests/intel_hangcheck.c @@ -1018,8 +1018,41 @@ static int evict_vma(void *data) return err; } +static int evict_fence(void *data) +{ + struct evict_vma *arg = data; + struct drm_i915_private *i915 = arg->vma->vm->i915; + int err; + + complete(&arg->completion); + + mutex_lock(&i915->drm.struct_mutex); + + /* Mark the fence register as dirty to force the mmio update. */ + err = i915_gem_object_set_tiling(arg->vma->obj, I915_TILING_Y, 512); + if (err) { + pr_err("Invalid Y-tiling settings; err:%d\n", err); + goto out_unlock; + } + + err = i915_vma_pin_fence(arg->vma); + if (err) { + pr_err("Unable to pin Y-tiled fence; err:%d\n", err); + goto out_unlock; + } + + i915_vma_unpin_fence(arg->vma); + +out_unlock: + mutex_unlock(&i915->drm.struct_mutex); + + return err; +} + static int __igt_reset_evict_vma(struct drm_i915_private *i915, - struct i915_address_space *vm) + struct i915_address_space *vm, + int (*fn)(void *), + unsigned int flags) { struct drm_i915_gem_object *obj; struct task_struct *tsk = NULL; @@ -1040,12 +1073,20 @@ static int __igt_reset_evict_vma(struct drm_i915_private *i915, if (err) goto unlock; - obj = i915_gem_object_create_internal(i915, PAGE_SIZE); + obj = i915_gem_object_create_internal(i915, SZ_1M); if (IS_ERR(obj)) { err = PTR_ERR(obj); goto fini; } + if (flags & EXEC_OBJECT_NEEDS_FENCE) { + err = i915_gem_object_set_tiling(obj, I915_TILING_X, 512); + if (err) { + pr_err("Invalid X-tiling settings; err:%d\n", err); + goto out_obj; + } + } + arg.vma = i915_vma_instance(obj, vm, NULL); if (IS_ERR(arg.vma)) { err = PTR_ERR(arg.vma); @@ -1059,11 +1100,28 @@ static int __igt_reset_evict_vma(struct drm_i915_private *i915, } err = i915_vma_pin(arg.vma, 0, 0, - i915_vma_is_ggtt(arg.vma) ? PIN_GLOBAL : PIN_USER); - if (err) + i915_vma_is_ggtt(arg.vma) ? + PIN_GLOBAL | PIN_MAPPABLE : + PIN_USER); + if (err) { + i915_request_add(rq); goto out_obj; + } + + if (flags & EXEC_OBJECT_NEEDS_FENCE) { + err = i915_vma_pin_fence(arg.vma); + if (err) { + pr_err("Unable to pin X-tiled fence; err:%d\n", err); + i915_vma_unpin(arg.vma); + i915_request_add(rq); + goto out_obj; + } + } - err = i915_vma_move_to_active(arg.vma, rq, EXEC_OBJECT_WRITE); + err = i915_vma_move_to_active(arg.vma, rq, flags); + + if (flags & EXEC_OBJECT_NEEDS_FENCE) + i915_vma_unpin_fence(arg.vma); i915_vma_unpin(arg.vma); i915_request_get(rq); @@ -1086,7 +1144,7 @@ static int __igt_reset_evict_vma(struct drm_i915_private *i915, init_completion(&arg.completion); - tsk = kthread_run(evict_vma, &arg, "igt/evict_vma"); + tsk = kthread_run(fn, &arg, "igt/evict_vma"); if (IS_ERR(tsk)) { err = PTR_ERR(tsk); tsk = NULL; @@ -1137,7 +1195,8 @@ static int igt_reset_evict_ggtt(void *arg) { struct drm_i915_private *i915 = arg; - return __igt_reset_evict_vma(i915, &i915->ggtt.vm); + return __igt_reset_evict_vma(i915, &i915->ggtt.vm, + evict_vma, EXEC_OBJECT_WRITE); } static int igt_reset_evict_ppgtt(void *arg) @@ -1161,13 +1220,22 @@ static int igt_reset_evict_ppgtt(void *arg) err = 0; if (ctx->ppgtt) /* aliasing == global gtt locking, covered above */ - err = __igt_reset_evict_vma(i915, &ctx->ppgtt->vm); + err = __igt_reset_evict_vma(i915, &ctx->ppgtt->vm, + evict_vma, EXEC_OBJECT_WRITE); out: mock_file_free(i915, file); return err; } +static int igt_reset_evict_fence(void *arg) +{ + struct drm_i915_private *i915 = arg; + + return __igt_reset_evict_vma(i915, &i915->ggtt.vm, + evict_fence, EXEC_OBJECT_NEEDS_FENCE); +} + static int wait_for_others(struct drm_i915_private *i915, struct intel_engine_cs *exclude) { @@ -1417,6 +1485,7 @@ int intel_hangcheck_live_selftests(struct drm_i915_private *i915) SUBTEST(igt_reset_wait), SUBTEST(igt_reset_evict_ggtt), SUBTEST(igt_reset_evict_ppgtt), + SUBTEST(igt_reset_evict_fence), SUBTEST(igt_handle_error), }; bool saved_hangcheck; -- cgit v1.2.3 From a095f15c00e2788bd83f4e9aa64ef303cae8e649 Mon Sep 17 00:00:00 2001 From: Sandeep Panda Date: Fri, 20 Jul 2018 12:24:02 +0530 Subject: drm/bridge: add support for sn65dsi86 bridge driver Add support for TI's sn65dsi86 dsi2edp bridge chip. The chip converts DSI transmitted signal to eDP signal, which is fed to the connected eDP panel. This chip can be controlled via either i2c interface or dsi interface. Currently in driver all the control registers are being accessed through i2c interface only. Also as of now HPD support has not been added to bridge chip driver. Changes in v1: - Split the dt-bindings and the driver support into separate patches (Andrzej Hajda). - Use of gpiod APIs to parse and configure gpios instead of obsolete ones (Andrzej Hajda). - Use macros to define the register offsets (Andrzej Hajda). Changes in v2: - Separate out edp panel specific HW resource handling from bridge driver and create a separate edp panel drivers to handle panel specific mode information and HW resources (Sean Paul). - Replace pr_* APIs to DRM_* APIs to log error or debug information (Sean Paul). - Remove some of the unnecessary structure/variable from driver (Sean Paul). - Rename the function and structure prefix "sn65dsi86" to "ti_sn_bridge" (Sean Paul / Rob Herring). - Remove most of the hard-coding and modified the bridge init sequence based on current mode (Sean Paul). - Remove the existing function to retrieve the EDID data and implemented this as an i2c_adapter and use drm_get_edid() (Sean Paul). - Remove the dummy irq handler implementation, will add back the proper irq handling later (Sean Paul). - Capture the required enable gpios in a single array based on dt entry instead of having individual descriptor for each gpio (Sean Paul). Changes in v3: - Remove usage of irq_gpio and replace it as "interrupts" property (Rob Herring). - Remove the unnecessary header file inclusions (Sean Paul). - Rearrange the header files in alphabetical order (Sean Paul). - Use regmap interface to perform i2c transactions. - Update Copyright/License field and address other review comments (Jordan Crouse). Changes in v4: - Update License/Copyright (Sean Paul). - Add Kconfig and Makefile changes (Sean Paul). - Drop i2c gpio handling from this bridge driver, since i2c sda/scl gpios will be handled by i2c master. - Update required supplies names. - Remove unnecessary goto statements (Sean Paul). - Add mutex lock to power_ctrl API to avoid race conditions (Sean Paul). - Add support to parse reference clk frequency from dt(optional). - Update the bridge chip enable/disable sequence. Changes in v5: - Fixed Kbuild test service reported warnings. Changes in v6: - Use PM runtime based ref-counting instead of local ref_count mechanism (Stephen Boyd). - Clean up some debug logs and indentations (Sean Paul). - Simplify dp rate calculation (Sean Paul). - Add support to configure refclk based on input REFCLK pin or DACP/N pin (Stephen Boyd). Changes in v7: - Use static supply entries instead of dynamic allocation (Andrzej Hajda). - Defer bridge driver probe if panel is not probed (Andrzej Hajda). - Update of_graph APIs for correct node reference management. (Andrzej Hajda). - Remove local display_mode object (Andrzej Hajda). - Remove version id check function from driver. Changes in v8: - Move dsi register/attach function to bridge driver probe (Andrzej Hajda). - Introduce a new helper function to write 16bit words into consecutive registers (Andrzej Hajda). - Remove unnecessary macros (Andrzej Hajda). Changes in v9: - Remove dsi register/attach from bridge probe, since dsi dev register completion also waits for any panel or bridge to get added. This creates deadlock situation when bridge driver calls dsi dev register and attach before bridge add, in its probe function. - Fix issues faced during testing of bridge driver on actual HW. - Remove unnecessary initializations (Stephen Boyd). - Use local refclk lut size instead of global macro (Sean Paul). Changes in v10: - Use refclk to determine if continuous dsi clock is needed or not. Changes in v11: - Read DPPLL_SRC register to determine continuous clock instead of using refclk handle (Stephen Boyd). Changes in v12: - Explain in comment as in why dsi dev registration is done in bridge_attach (Andrzej Hajda). - Move HPD disable to bridge_pre_enable (Andrzej Hajda). - Make panel/DDC exclusive until HPD support is added (Andrzej Hajda). Changes in v13: - eDP panels report EDID via DP-AUX channel, so remove support for dedicated DDC line (Andrzej Hajda). Changes in v14: - Remove unnecessary drm_panel checks (Andrzej Hajda). Signed-off-by: Sandeep Panda Reviewed-by: Andrzej Hajda Signed-off-by: Andrzej Hajda Link: https://patchwork.freedesktop.org/patch/msgid/1532069642-21392-1-git-send-email-spanda@codeaurora.org --- drivers/gpu/drm/bridge/Kconfig | 9 + drivers/gpu/drm/bridge/Makefile | 1 + drivers/gpu/drm/bridge/ti-sn65dsi86.c | 664 ++++++++++++++++++++++++++++++++++ 3 files changed, 674 insertions(+) create mode 100644 drivers/gpu/drm/bridge/ti-sn65dsi86.c (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig index bf6cad6c9178..eeb9c489a817 100644 --- a/drivers/gpu/drm/bridge/Kconfig +++ b/drivers/gpu/drm/bridge/Kconfig @@ -128,6 +128,15 @@ config DRM_TI_TFP410 ---help--- Texas Instruments TFP410 DVI/HDMI Transmitter driver +config DRM_TI_SN65DSI86 + tristate "TI SN65DSI86 DSI to eDP bridge" + depends on OF + select DRM_KMS_HELPER + select REGMAP_I2C + select DRM_PANEL + help + Texas Instruments SN65DSI86 DSI to eDP Bridge driver + source "drivers/gpu/drm/bridge/analogix/Kconfig" source "drivers/gpu/drm/bridge/adv7511/Kconfig" diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile index 35f88d48ec20..fd90ac059ceb 100644 --- a/drivers/gpu/drm/bridge/Makefile +++ b/drivers/gpu/drm/bridge/Makefile @@ -13,5 +13,6 @@ obj-$(CONFIG_DRM_THINE_THC63LVD1024) += thc63lvd1024.o obj-$(CONFIG_DRM_TOSHIBA_TC358767) += tc358767.o obj-$(CONFIG_DRM_ANALOGIX_DP) += analogix/ obj-$(CONFIG_DRM_I2C_ADV7511) += adv7511/ +obj-$(CONFIG_DRM_TI_SN65DSI86) += ti-sn65dsi86.o obj-$(CONFIG_DRM_TI_TFP410) += ti-tfp410.o obj-y += synopsys/ diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c new file mode 100644 index 000000000000..5b93ef518861 --- /dev/null +++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c @@ -0,0 +1,664 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2018, The Linux Foundation. All rights reserved. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* Link Training specific registers */ +#define SN_DEVICE_REV_REG 0x08 +#define SN_HPD_DISABLE_REG 0x5C +#define SN_DPPLL_SRC_REG 0x0A +#define SN_DSI_LANES_REG 0x10 +#define SN_DSIA_CLK_FREQ_REG 0x12 +#define SN_ENH_FRAME_REG 0x5A +#define SN_SSC_CONFIG_REG 0x93 +#define SN_DATARATE_CONFIG_REG 0x94 +#define SN_PLL_ENABLE_REG 0x0D +#define SN_SCRAMBLE_CONFIG_REG 0x95 +#define SN_AUX_WDATA0_REG 0x64 +#define SN_AUX_ADDR_19_16_REG 0x74 +#define SN_AUX_ADDR_15_8_REG 0x75 +#define SN_AUX_ADDR_7_0_REG 0x76 +#define SN_AUX_LENGTH_REG 0x77 +#define SN_AUX_CMD_REG 0x78 +#define SN_ML_TX_MODE_REG 0x96 +/* video config specific registers */ +#define SN_CHA_ACTIVE_LINE_LENGTH_LOW_REG 0x20 +#define SN_CHA_VERTICAL_DISPLAY_SIZE_LOW_REG 0x24 +#define SN_CHA_HSYNC_PULSE_WIDTH_LOW_REG 0x2C +#define SN_CHA_HSYNC_PULSE_WIDTH_HIGH_REG 0x2D +#define SN_CHA_VSYNC_PULSE_WIDTH_LOW_REG 0x30 +#define SN_CHA_VSYNC_PULSE_WIDTH_HIGH_REG 0x31 +#define SN_CHA_HORIZONTAL_BACK_PORCH_REG 0x34 +#define SN_CHA_VERTICAL_BACK_PORCH_REG 0x36 +#define SN_CHA_HORIZONTAL_FRONT_PORCH_REG 0x38 +#define SN_CHA_VERTICAL_FRONT_PORCH_REG 0x3A +#define SN_DATA_FORMAT_REG 0x5B + +#define MIN_DSI_CLK_FREQ_MHZ 40 + +/* fudge factor required to account for 8b/10b encoding */ +#define DP_CLK_FUDGE_NUM 10 +#define DP_CLK_FUDGE_DEN 8 + +#define DPPLL_CLK_SRC_REFCLK 0 +#define DPPLL_CLK_SRC_DSICLK 1 + +#define SN_REFCLK_FREQ_OFFSET 1 +#define SN_DSIA_LANE_OFFSET 3 +#define SN_DP_LANE_OFFSET 4 +#define SN_DP_DATA_RATE_OFFSET 5 +#define SN_SYNC_POLARITY_OFFSET 7 + +#define SN_ENABLE_VID_STREAM_BIT BIT(3) +#define SN_REFCLK_FREQ_BITS GENMASK(3, 1) +#define SN_DSIA_NUM_LANES_BITS GENMASK(4, 3) +#define SN_DP_NUM_LANES_BITS GENMASK(5, 4) +#define SN_DP_DATA_RATE_BITS GENMASK(7, 5) +#define SN_HPD_DISABLE_BIT BIT(0) + +#define SN_REGULATOR_SUPPLY_NUM 4 + +struct ti_sn_bridge { + struct device *dev; + struct regmap *regmap; + struct drm_bridge bridge; + struct drm_connector connector; + struct device_node *host_node; + struct mipi_dsi_device *dsi; + struct clk *refclk; + struct drm_panel *panel; + struct gpio_desc *enable_gpio; + struct regulator_bulk_data supplies[SN_REGULATOR_SUPPLY_NUM]; +}; + +static const struct regmap_range ti_sn_bridge_volatile_ranges[] = { + { .range_min = 0, .range_max = 0xFF }, +}; + +static const struct regmap_access_table ti_sn_bridge_volatile_table = { + .yes_ranges = ti_sn_bridge_volatile_ranges, + .n_yes_ranges = ARRAY_SIZE(ti_sn_bridge_volatile_ranges), +}; + +static const struct regmap_config ti_sn_bridge_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .volatile_table = &ti_sn_bridge_volatile_table, + .cache_type = REGCACHE_NONE, +}; + +static void ti_sn_bridge_write_u16(struct ti_sn_bridge *pdata, + unsigned int reg, u16 val) +{ + regmap_write(pdata->regmap, reg, val & 0xFF); + regmap_write(pdata->regmap, reg + 1, val >> 8); +} + +static int __maybe_unused ti_sn_bridge_resume(struct device *dev) +{ + struct ti_sn_bridge *pdata = dev_get_drvdata(dev); + int ret; + + ret = regulator_bulk_enable(SN_REGULATOR_SUPPLY_NUM, pdata->supplies); + if (ret) { + DRM_ERROR("failed to enable supplies %d\n", ret); + return ret; + } + + gpiod_set_value(pdata->enable_gpio, 1); + + return ret; +} + +static int __maybe_unused ti_sn_bridge_suspend(struct device *dev) +{ + struct ti_sn_bridge *pdata = dev_get_drvdata(dev); + int ret; + + gpiod_set_value(pdata->enable_gpio, 0); + + ret = regulator_bulk_disable(SN_REGULATOR_SUPPLY_NUM, pdata->supplies); + if (ret) + DRM_ERROR("failed to disable supplies %d\n", ret); + + return ret; +} + +static const struct dev_pm_ops ti_sn_bridge_pm_ops = { + SET_RUNTIME_PM_OPS(ti_sn_bridge_suspend, ti_sn_bridge_resume, NULL) +}; + +/* Connector funcs */ +static struct ti_sn_bridge * +connector_to_ti_sn_bridge(struct drm_connector *connector) +{ + return container_of(connector, struct ti_sn_bridge, connector); +} + +static int ti_sn_bridge_connector_get_modes(struct drm_connector *connector) +{ + struct ti_sn_bridge *pdata = connector_to_ti_sn_bridge(connector); + + return drm_panel_get_modes(pdata->panel); +} + +static enum drm_mode_status +ti_sn_bridge_connector_mode_valid(struct drm_connector *connector, + struct drm_display_mode *mode) +{ + /* maximum supported resolution is 4K at 60 fps */ + if (mode->clock > 594000) + return MODE_CLOCK_HIGH; + + return MODE_OK; +} + +static struct drm_connector_helper_funcs ti_sn_bridge_connector_helper_funcs = { + .get_modes = ti_sn_bridge_connector_get_modes, + .mode_valid = ti_sn_bridge_connector_mode_valid, +}; + +static enum drm_connector_status +ti_sn_bridge_connector_detect(struct drm_connector *connector, bool force) +{ + /** + * TODO: Currently if drm_panel is present, then always + * return the status as connected. Need to add support to detect + * device state for hot pluggable scenarios. + */ + return connector_status_connected; +} + +static const struct drm_connector_funcs ti_sn_bridge_connector_funcs = { + .fill_modes = drm_helper_probe_single_connector_modes, + .detect = ti_sn_bridge_connector_detect, + .destroy = drm_connector_cleanup, + .reset = drm_atomic_helper_connector_reset, + .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, +}; + +static struct ti_sn_bridge *bridge_to_ti_sn_bridge(struct drm_bridge *bridge) +{ + return container_of(bridge, struct ti_sn_bridge, bridge); +} + +static int ti_sn_bridge_parse_regulators(struct ti_sn_bridge *pdata) +{ + unsigned int i; + const char * const ti_sn_bridge_supply_names[] = { + "vcca", "vcc", "vccio", "vpll", + }; + + for (i = 0; i < SN_REGULATOR_SUPPLY_NUM; i++) + pdata->supplies[i].supply = ti_sn_bridge_supply_names[i]; + + return devm_regulator_bulk_get(pdata->dev, SN_REGULATOR_SUPPLY_NUM, + pdata->supplies); +} + +static int ti_sn_bridge_attach(struct drm_bridge *bridge) +{ + int ret, val; + struct ti_sn_bridge *pdata = bridge_to_ti_sn_bridge(bridge); + struct mipi_dsi_host *host; + struct mipi_dsi_device *dsi; + const struct mipi_dsi_device_info info = { .type = "ti_sn_bridge", + .channel = 0, + .node = NULL, + }; + + ret = drm_connector_init(bridge->dev, &pdata->connector, + &ti_sn_bridge_connector_funcs, + DRM_MODE_CONNECTOR_eDP); + if (ret) { + DRM_ERROR("Failed to initialize connector with drm\n"); + return ret; + } + + drm_connector_helper_add(&pdata->connector, + &ti_sn_bridge_connector_helper_funcs); + drm_mode_connector_attach_encoder(&pdata->connector, bridge->encoder); + + /* + * TODO: ideally finding host resource and dsi dev registration needs + * to be done in bridge probe. But some existing DSI host drivers will + * wait for any of the drm_bridge/drm_panel to get added to the global + * bridge/panel list, before completing their probe. So if we do the + * dsi dev registration part in bridge probe, before populating in + * the global bridge list, then it will cause deadlock as dsi host probe + * will never complete, neither our bridge probe. So keeping it here + * will satisfy most of the existing host drivers. Once the host driver + * is fixed we can move the below code to bridge probe safely. + */ + host = of_find_mipi_dsi_host_by_node(pdata->host_node); + if (!host) { + DRM_ERROR("failed to find dsi host\n"); + ret = -ENODEV; + goto err_dsi_host; + } + + dsi = mipi_dsi_device_register_full(host, &info); + if (IS_ERR(dsi)) { + DRM_ERROR("failed to create dsi device\n"); + ret = PTR_ERR(dsi); + goto err_dsi_host; + } + + /* TODO: setting to 4 lanes always for now */ + dsi->lanes = 4; + dsi->format = MIPI_DSI_FMT_RGB888; + dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE | + MIPI_DSI_MODE_EOT_PACKET | MIPI_DSI_MODE_VIDEO_HSE; + + /* check if continuous dsi clock is required or not */ + pm_runtime_get_sync(pdata->dev); + regmap_read(pdata->regmap, SN_DPPLL_SRC_REG, &val); + pm_runtime_put(pdata->dev); + if (!(val & DPPLL_CLK_SRC_DSICLK)) + dsi->mode_flags |= MIPI_DSI_CLOCK_NON_CONTINUOUS; + + ret = mipi_dsi_attach(dsi); + if (ret < 0) { + DRM_ERROR("failed to attach dsi to host\n"); + goto err_dsi_attach; + } + pdata->dsi = dsi; + + /* attach panel to bridge */ + drm_panel_attach(pdata->panel, &pdata->connector); + + return 0; + +err_dsi_attach: + mipi_dsi_device_unregister(dsi); +err_dsi_host: + drm_connector_cleanup(&pdata->connector); + return ret; +} + +static void ti_sn_bridge_disable(struct drm_bridge *bridge) +{ + struct ti_sn_bridge *pdata = bridge_to_ti_sn_bridge(bridge); + + drm_panel_disable(pdata->panel); + + /* disable video stream */ + regmap_update_bits(pdata->regmap, SN_ENH_FRAME_REG, + SN_ENABLE_VID_STREAM_BIT, 0); + /* semi auto link training mode OFF */ + regmap_write(pdata->regmap, SN_ML_TX_MODE_REG, 0); + /* disable DP PLL */ + regmap_write(pdata->regmap, SN_PLL_ENABLE_REG, 0); + + drm_panel_unprepare(pdata->panel); +} + +static u32 ti_sn_bridge_get_dsi_freq(struct ti_sn_bridge *pdata) +{ + u32 bit_rate_khz, clk_freq_khz; + struct drm_display_mode *mode = + &pdata->bridge.encoder->crtc->state->adjusted_mode; + + bit_rate_khz = mode->clock * + mipi_dsi_pixel_format_to_bpp(pdata->dsi->format); + clk_freq_khz = bit_rate_khz / (pdata->dsi->lanes * 2); + + return clk_freq_khz; +} + +/* clk frequencies supported by bridge in Hz in case derived from REFCLK pin */ +static const u32 ti_sn_bridge_refclk_lut[] = { + 12000000, + 19200000, + 26000000, + 27000000, + 38400000, +}; + +/* clk frequencies supported by bridge in Hz in case derived from DACP/N pin */ +static const u32 ti_sn_bridge_dsiclk_lut[] = { + 468000000, + 384000000, + 416000000, + 486000000, + 460800000, +}; + +static void ti_sn_bridge_set_refclk_freq(struct ti_sn_bridge *pdata) +{ + int i; + u32 refclk_rate; + const u32 *refclk_lut; + size_t refclk_lut_size; + + if (pdata->refclk) { + refclk_rate = clk_get_rate(pdata->refclk); + refclk_lut = ti_sn_bridge_refclk_lut; + refclk_lut_size = ARRAY_SIZE(ti_sn_bridge_refclk_lut); + clk_prepare_enable(pdata->refclk); + } else { + refclk_rate = ti_sn_bridge_get_dsi_freq(pdata) * 1000; + refclk_lut = ti_sn_bridge_dsiclk_lut; + refclk_lut_size = ARRAY_SIZE(ti_sn_bridge_dsiclk_lut); + } + + /* for i equals to refclk_lut_size means default frequency */ + for (i = 0; i < refclk_lut_size; i++) + if (refclk_lut[i] == refclk_rate) + break; + + regmap_update_bits(pdata->regmap, SN_DPPLL_SRC_REG, + SN_REFCLK_FREQ_BITS, i << SN_REFCLK_FREQ_OFFSET); +} + +/** + * LUT index corresponds to register value and + * LUT values corresponds to dp data rate supported + * by the bridge in Mbps unit. + */ +static const unsigned int ti_sn_bridge_dp_rate_lut[] = { + 0, 1620, 2160, 2430, 2700, 3240, 4320, 5400 +}; + +static void ti_sn_bridge_set_dsi_dp_rate(struct ti_sn_bridge *pdata) +{ + unsigned int bit_rate_mhz, clk_freq_mhz, dp_rate_mhz; + unsigned int val, i; + struct drm_display_mode *mode = + &pdata->bridge.encoder->crtc->state->adjusted_mode; + + /* set DSIA clk frequency */ + bit_rate_mhz = (mode->clock / 1000) * + mipi_dsi_pixel_format_to_bpp(pdata->dsi->format); + clk_freq_mhz = bit_rate_mhz / (pdata->dsi->lanes * 2); + + /* for each increment in val, frequency increases by 5MHz */ + val = (MIN_DSI_CLK_FREQ_MHZ / 5) + + (((clk_freq_mhz - MIN_DSI_CLK_FREQ_MHZ) / 5) & 0xFF); + regmap_write(pdata->regmap, SN_DSIA_CLK_FREQ_REG, val); + + /* set DP data rate */ + dp_rate_mhz = ((bit_rate_mhz / pdata->dsi->lanes) * DP_CLK_FUDGE_NUM) / + DP_CLK_FUDGE_DEN; + for (i = 0; i < ARRAY_SIZE(ti_sn_bridge_dp_rate_lut) - 1; i++) + if (ti_sn_bridge_dp_rate_lut[i] > dp_rate_mhz) + break; + + regmap_update_bits(pdata->regmap, SN_DATARATE_CONFIG_REG, + SN_DP_DATA_RATE_BITS, i << SN_DP_DATA_RATE_OFFSET); +} + +static void ti_sn_bridge_set_video_timings(struct ti_sn_bridge *pdata) +{ + struct drm_display_mode *mode = + &pdata->bridge.encoder->crtc->state->adjusted_mode; + u8 hsync_polarity = 0, vsync_polarity = 0; + + if (mode->flags & DRM_MODE_FLAG_PHSYNC) + hsync_polarity = BIT(SN_SYNC_POLARITY_OFFSET); + if (mode->flags & DRM_MODE_FLAG_PVSYNC) + vsync_polarity = BIT(SN_SYNC_POLARITY_OFFSET); + + ti_sn_bridge_write_u16(pdata, SN_CHA_ACTIVE_LINE_LENGTH_LOW_REG, + mode->hdisplay); + ti_sn_bridge_write_u16(pdata, SN_CHA_VERTICAL_DISPLAY_SIZE_LOW_REG, + mode->vdisplay); + regmap_write(pdata->regmap, SN_CHA_HSYNC_PULSE_WIDTH_LOW_REG, + (mode->hsync_end - mode->hsync_start) & 0xFF); + regmap_write(pdata->regmap, SN_CHA_HSYNC_PULSE_WIDTH_HIGH_REG, + (((mode->hsync_end - mode->hsync_start) >> 8) & 0x7F) | + hsync_polarity); + regmap_write(pdata->regmap, SN_CHA_VSYNC_PULSE_WIDTH_LOW_REG, + (mode->vsync_end - mode->vsync_start) & 0xFF); + regmap_write(pdata->regmap, SN_CHA_VSYNC_PULSE_WIDTH_HIGH_REG, + (((mode->vsync_end - mode->vsync_start) >> 8) & 0x7F) | + vsync_polarity); + + regmap_write(pdata->regmap, SN_CHA_HORIZONTAL_BACK_PORCH_REG, + (mode->htotal - mode->hsync_end) & 0xFF); + regmap_write(pdata->regmap, SN_CHA_VERTICAL_BACK_PORCH_REG, + (mode->vtotal - mode->vsync_end) & 0xFF); + + regmap_write(pdata->regmap, SN_CHA_HORIZONTAL_FRONT_PORCH_REG, + (mode->hsync_start - mode->hdisplay) & 0xFF); + regmap_write(pdata->regmap, SN_CHA_VERTICAL_FRONT_PORCH_REG, + (mode->vsync_start - mode->vdisplay) & 0xFF); + + usleep_range(10000, 10500); /* 10ms delay recommended by spec */ +} + +static void ti_sn_bridge_enable(struct drm_bridge *bridge) +{ + struct ti_sn_bridge *pdata = bridge_to_ti_sn_bridge(bridge); + unsigned int val; + + drm_panel_prepare(pdata->panel); + + /* DSI_A lane config */ + val = (4 - pdata->dsi->lanes) << SN_DSIA_LANE_OFFSET; + regmap_update_bits(pdata->regmap, SN_DSI_LANES_REG, + SN_DSIA_NUM_LANES_BITS, val); + + /* DP lane config */ + val = (pdata->dsi->lanes - 1) << SN_DP_LANE_OFFSET; + regmap_update_bits(pdata->regmap, SN_SSC_CONFIG_REG, + SN_DP_NUM_LANES_BITS, val); + + /* set dsi/dp clk frequency value */ + ti_sn_bridge_set_dsi_dp_rate(pdata); + + /* enable DP PLL */ + regmap_write(pdata->regmap, SN_PLL_ENABLE_REG, 1); + usleep_range(10000, 10500); /* 10ms delay recommended by spec */ + + /** + * The SN65DSI86 only supports ASSR Display Authentication method and + * this method is enabled by default. An eDP panel must support this + * authentication method. We need to enable this method in the eDP panel + * at DisplayPort address 0x0010A prior to link training. + */ + regmap_write(pdata->regmap, SN_AUX_WDATA0_REG, 0x01); + regmap_write(pdata->regmap, SN_AUX_ADDR_19_16_REG, 0x00); + regmap_write(pdata->regmap, SN_AUX_ADDR_15_8_REG, 0x01); + regmap_write(pdata->regmap, SN_AUX_ADDR_7_0_REG, 0x0A); + regmap_write(pdata->regmap, SN_AUX_LENGTH_REG, 0x01); + regmap_write(pdata->regmap, SN_AUX_CMD_REG, 0x81); + usleep_range(10000, 10500); /* 10ms delay recommended by spec */ + + /* Semi auto link training mode */ + regmap_write(pdata->regmap, SN_ML_TX_MODE_REG, 0x0A); + msleep(20); /* 20ms delay recommended by spec */ + + /* config video parameters */ + ti_sn_bridge_set_video_timings(pdata); + + /* enable video stream */ + regmap_update_bits(pdata->regmap, SN_ENH_FRAME_REG, + SN_ENABLE_VID_STREAM_BIT, SN_ENABLE_VID_STREAM_BIT); + + drm_panel_enable(pdata->panel); +} + +static void ti_sn_bridge_pre_enable(struct drm_bridge *bridge) +{ + struct ti_sn_bridge *pdata = bridge_to_ti_sn_bridge(bridge); + + pm_runtime_get_sync(pdata->dev); + + /* configure bridge ref_clk */ + ti_sn_bridge_set_refclk_freq(pdata); + + /* in case drm_panel is connected then HPD is not supported */ + regmap_update_bits(pdata->regmap, SN_HPD_DISABLE_REG, + SN_HPD_DISABLE_BIT, SN_HPD_DISABLE_BIT); +} + +static void ti_sn_bridge_post_disable(struct drm_bridge *bridge) +{ + struct ti_sn_bridge *pdata = bridge_to_ti_sn_bridge(bridge); + + if (pdata->refclk) + clk_disable_unprepare(pdata->refclk); + + pm_runtime_put_sync(pdata->dev); +} + +static const struct drm_bridge_funcs ti_sn_bridge_funcs = { + .attach = ti_sn_bridge_attach, + .pre_enable = ti_sn_bridge_pre_enable, + .enable = ti_sn_bridge_enable, + .disable = ti_sn_bridge_disable, + .post_disable = ti_sn_bridge_post_disable, +}; + +static int ti_sn_bridge_parse_dsi_host(struct ti_sn_bridge *pdata) +{ + struct device_node *np = pdata->dev->of_node; + + pdata->host_node = of_graph_get_remote_node(np, 0, 0); + + if (!pdata->host_node) { + DRM_ERROR("remote dsi host node not found\n"); + return -ENODEV; + } + + return 0; +} + +static int ti_sn_bridge_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct ti_sn_bridge *pdata; + int ret; + + if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { + DRM_ERROR("device doesn't support I2C\n"); + return -ENODEV; + } + + pdata = devm_kzalloc(&client->dev, sizeof(struct ti_sn_bridge), + GFP_KERNEL); + if (!pdata) + return -ENOMEM; + + pdata->regmap = devm_regmap_init_i2c(client, + &ti_sn_bridge_regmap_config); + if (IS_ERR(pdata->regmap)) { + DRM_ERROR("regmap i2c init failed\n"); + return PTR_ERR(pdata->regmap); + } + + pdata->dev = &client->dev; + + ret = drm_of_find_panel_or_bridge(pdata->dev->of_node, 1, 0, + &pdata->panel, NULL); + if (ret) { + DRM_ERROR("could not find any panel node\n"); + return ret; + } + + dev_set_drvdata(&client->dev, pdata); + + pdata->enable_gpio = devm_gpiod_get(pdata->dev, "enable", + GPIOD_OUT_LOW); + if (IS_ERR(pdata->enable_gpio)) { + DRM_ERROR("failed to get enable gpio from DT\n"); + ret = PTR_ERR(pdata->enable_gpio); + return ret; + } + + ret = ti_sn_bridge_parse_regulators(pdata); + if (ret) { + DRM_ERROR("failed to parse regulators\n"); + return ret; + } + + pdata->refclk = devm_clk_get(pdata->dev, "refclk"); + if (IS_ERR(pdata->refclk)) { + ret = PTR_ERR(pdata->refclk); + if (ret == -EPROBE_DEFER) + return ret; + DRM_DEBUG_KMS("refclk not found\n"); + pdata->refclk = NULL; + } + + ret = ti_sn_bridge_parse_dsi_host(pdata); + if (ret) + return ret; + + pm_runtime_enable(pdata->dev); + + i2c_set_clientdata(client, pdata); + + pdata->bridge.funcs = &ti_sn_bridge_funcs; + pdata->bridge.of_node = client->dev.of_node; + + drm_bridge_add(&pdata->bridge); + + return 0; +} + +static int ti_sn_bridge_remove(struct i2c_client *client) +{ + struct ti_sn_bridge *pdata = i2c_get_clientdata(client); + + if (!pdata) + return -EINVAL; + + of_node_put(pdata->host_node); + + pm_runtime_disable(pdata->dev); + + if (pdata->dsi) { + mipi_dsi_detach(pdata->dsi); + mipi_dsi_device_unregister(pdata->dsi); + } + + drm_bridge_remove(&pdata->bridge); + + return 0; +} + +static struct i2c_device_id ti_sn_bridge_id[] = { + { "ti,sn65dsi86", 0}, + {}, +}; +MODULE_DEVICE_TABLE(i2c, ti_sn_bridge_id); + +static const struct of_device_id ti_sn_bridge_match_table[] = { + {.compatible = "ti,sn65dsi86"}, + {}, +}; +MODULE_DEVICE_TABLE(of, ti_sn_bridge_match_table); + +static struct i2c_driver ti_sn_bridge_driver = { + .driver = { + .name = "ti_sn65dsi86", + .of_match_table = ti_sn_bridge_match_table, + .pm = &ti_sn_bridge_pm_ops, + }, + .probe = ti_sn_bridge_probe, + .remove = ti_sn_bridge_remove, + .id_table = ti_sn_bridge_id, +}; +module_i2c_driver(ti_sn_bridge_driver); + +MODULE_AUTHOR("Sandeep Panda "); +MODULE_DESCRIPTION("sn65dsi86 DSI to eDP bridge driver"); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3 From f38b7cca6d0eafef278703ddadb369322a510ca6 Mon Sep 17 00:00:00 2001 From: Andrzej Hajda Date: Wed, 25 Jul 2018 17:46:40 +0200 Subject: drm/bridge: tc358764: Add DSI to LVDS bridge driver Add a drm_bridge driver for the Toshiba TC358764 DSI to LVDS bridge. Changes in v4: - removed license blob, - ordered includes, - added error handling, - fixed reset GPIO handling, - added missing calls to the panel, - custom OF graph code replaced with helpers, - removed tc358764_poweroff from remove callback. v5: - fixed supply names, - fixed broken console - added connector to fb_helper, - added detach callback - unbinding works, - fixed typo in error checking code, - removed sparse bridge->encoder check - core does it already. Signed-off-by: Andrzej Hajda Signed-off-by: Maciej Purski [ a.hajda@samsung.com: v4, v5 ] Signed-off-by: Andrzej Hajda Reviewed-by: Archit Taneja Link: https://patchwork.freedesktop.org/patch/msgid/20180725154644.25412-6-a.hajda@samsung.com --- drivers/gpu/drm/bridge/Kconfig | 8 + drivers/gpu/drm/bridge/Makefile | 1 + drivers/gpu/drm/bridge/tc358764.c | 499 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 508 insertions(+) create mode 100644 drivers/gpu/drm/bridge/tc358764.c (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig index eeb9c489a817..9a455c5f24f0 100644 --- a/drivers/gpu/drm/bridge/Kconfig +++ b/drivers/gpu/drm/bridge/Kconfig @@ -112,6 +112,14 @@ config DRM_THINE_THC63LVD1024 ---help--- Thine THC63LVD1024 LVDS/parallel converter driver. +config DRM_TOSHIBA_TC358764 + tristate "TC358764 DSI/LVDS bridge" + depends on DRM && DRM_PANEL + depends on OF + select DRM_MIPI_DSI + help + Toshiba TC358764 DSI/LVDS bridge driver. + config DRM_TOSHIBA_TC358767 tristate "Toshiba TC358767 eDP bridge" depends on OF diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile index fd90ac059ceb..4934fcf5a6f8 100644 --- a/drivers/gpu/drm/bridge/Makefile +++ b/drivers/gpu/drm/bridge/Makefile @@ -10,6 +10,7 @@ obj-$(CONFIG_DRM_SIL_SII8620) += sil-sii8620.o obj-$(CONFIG_DRM_SII902X) += sii902x.o obj-$(CONFIG_DRM_SII9234) += sii9234.o obj-$(CONFIG_DRM_THINE_THC63LVD1024) += thc63lvd1024.o +obj-$(CONFIG_DRM_TOSHIBA_TC358764) += tc358764.o obj-$(CONFIG_DRM_TOSHIBA_TC358767) += tc358767.o obj-$(CONFIG_DRM_ANALOGIX_DP) += analogix/ obj-$(CONFIG_DRM_I2C_ADV7511) += adv7511/ diff --git a/drivers/gpu/drm/bridge/tc358764.c b/drivers/gpu/drm/bridge/tc358764.c new file mode 100644 index 000000000000..779bc5fce22a --- /dev/null +++ b/drivers/gpu/drm/bridge/tc358764.c @@ -0,0 +1,499 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2018 Samsung Electronics Co., Ltd + * + * Authors: + * Andrzej Hajda + * Maciej Purski + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include