diff options
author | Thomas Zimmermann <tzimmermann@suse.de> | 2022-08-01 16:50:28 +0300 |
---|---|---|
committer | Thomas Zimmermann <tzimmermann@suse.de> | 2022-08-05 15:14:03 +0300 |
commit | de40c281fe0b6babf3d1a25e034525a23e125d0c (patch) | |
tree | d0132529017b54fade23be1f99d82bb44f70270a /drivers/gpu/drm/tiny | |
parent | fd9e3169e42b7b9e3a5c58ca2bc95a15f9de1d6c (diff) | |
download | linux-de40c281fe0b6babf3d1a25e034525a23e125d0c.tar.xz |
drm/simpledrm: Convert to atomic helpers
Replace the simple-KMS helpers with the regular atomic helpers. The
regular helpers are better architectured and therefore allow for easier
code sharing among drivers. No functional changes.
v3:
* remove empty CRTC helpers atomic_{enable, disable} (Javier)
* unconditionally run drm_atomic_helper_check_plane_state()
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220801135028.30647-6-tzimmermann@suse.de
Diffstat (limited to 'drivers/gpu/drm/tiny')
-rw-r--r-- | drivers/gpu/drm/tiny/simpledrm.c | 273 |
1 files changed, 168 insertions, 105 deletions
diff --git a/drivers/gpu/drm/tiny/simpledrm.c b/drivers/gpu/drm/tiny/simpledrm.c index 11a7348ccf4d..82fd98f77981 100644 --- a/drivers/gpu/drm/tiny/simpledrm.c +++ b/drivers/gpu/drm/tiny/simpledrm.c @@ -8,6 +8,7 @@ #include <linux/regulator/consumer.h> #include <drm/drm_aperture.h> +#include <drm/drm_atomic.h> #include <drm/drm_atomic_state_helper.h> #include <drm/drm_connector.h> #include <drm/drm_damage_helper.h> @@ -20,8 +21,8 @@ #include <drm/drm_gem_shmem_helper.h> #include <drm/drm_managed.h> #include <drm/drm_modeset_helper_vtables.h> +#include <drm/drm_plane_helper.h> #include <drm/drm_probe_helper.h> -#include <drm/drm_simple_kms_helper.h> #define DRIVER_NAME "simpledrm" #define DRIVER_DESC "DRM driver for simple-framebuffer platform devices" @@ -221,8 +222,10 @@ struct simpledrm_device { /* modesetting */ uint32_t formats[8]; size_t nformats; + struct drm_plane primary_plane; + struct drm_crtc crtc; + struct drm_encoder encoder; struct drm_connector connector; - struct drm_simple_display_pipe pipe; }; static struct simpledrm_device *simpledrm_device_of_dev(struct drm_device *dev) @@ -460,7 +463,7 @@ static int simpledrm_device_init_regulators(struct simpledrm_device *sdev) * TODO: Add blit helpers for remaining formats and uncomment * constants. */ -static const uint32_t simpledrm_default_formats[] = { +static const uint32_t simpledrm_primary_plane_formats[] = { DRM_FORMAT_XRGB8888, DRM_FORMAT_ARGB8888, DRM_FORMAT_RGB565, @@ -471,73 +474,44 @@ static const uint32_t simpledrm_default_formats[] = { DRM_FORMAT_ARGB2101010, }; -static const uint64_t simpledrm_format_modifiers[] = { +static const uint64_t simpledrm_primary_plane_format_modifiers[] = { DRM_FORMAT_MOD_LINEAR, DRM_FORMAT_MOD_INVALID }; -static int simpledrm_connector_helper_get_modes(struct drm_connector *connector) +static int simpledrm_primary_plane_helper_atomic_check(struct drm_plane *plane, + struct drm_atomic_state *new_state) { - struct simpledrm_device *sdev = simpledrm_device_of_dev(connector->dev); - struct drm_display_mode *mode; - - mode = drm_mode_duplicate(connector->dev, &sdev->mode); - if (!mode) - return 0; - - if (mode->name[0] == '\0') - drm_mode_set_name(mode); - - mode->type |= DRM_MODE_TYPE_PREFERRED; - drm_mode_probed_add(connector, mode); - - if (mode->width_mm) - connector->display_info.width_mm = mode->width_mm; - if (mode->height_mm) - connector->display_info.height_mm = mode->height_mm; - - return 1; -} - -static const struct drm_connector_helper_funcs simpledrm_connector_helper_funcs = { - .get_modes = simpledrm_connector_helper_get_modes, -}; - -static const struct drm_connector_funcs simpledrm_connector_funcs = { - .reset = drm_atomic_helper_connector_reset, - .fill_modes = drm_helper_probe_single_connector_modes, - .destroy = drm_connector_cleanup, - .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, - .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, -}; + struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(new_state, plane); + struct drm_crtc *new_crtc = new_plane_state->crtc; + struct drm_crtc_state *new_crtc_state = NULL; + int ret; -static enum drm_mode_status -simpledrm_simple_display_pipe_mode_valid(struct drm_simple_display_pipe *pipe, - const struct drm_display_mode *mode) -{ - struct simpledrm_device *sdev = simpledrm_device_of_dev(pipe->crtc.dev); + if (new_crtc) + new_crtc_state = drm_atomic_get_new_crtc_state(new_state, new_crtc); - if (mode->hdisplay != sdev->mode.hdisplay && - mode->vdisplay != sdev->mode.vdisplay) - return MODE_ONE_SIZE; - else if (mode->hdisplay != sdev->mode.hdisplay) - return MODE_ONE_WIDTH; - else if (mode->vdisplay != sdev->mode.vdisplay) - return MODE_ONE_HEIGHT; + ret = drm_atomic_helper_check_plane_state(new_plane_state, new_crtc_state, + DRM_PLANE_NO_SCALING, + DRM_PLANE_NO_SCALING, + false, false); + if (ret) + return ret; + else if (!new_plane_state->visible) + return 0; - return MODE_OK; + return 0; } -static void -simpledrm_simple_display_pipe_enable(struct drm_simple_display_pipe *pipe, - struct drm_crtc_state *crtc_state, - struct drm_plane_state *plane_state) +static void simpledrm_primary_plane_helper_atomic_update(struct drm_plane *plane, + struct drm_atomic_state *old_state) { - struct simpledrm_device *sdev = simpledrm_device_of_dev(pipe->crtc.dev); + struct drm_plane_state *plane_state = plane->state; + struct drm_plane_state *old_plane_state = drm_atomic_get_old_plane_state(old_state, plane); struct drm_shadow_plane_state *shadow_plane_state = to_drm_shadow_plane_state(plane_state); - struct drm_framebuffer *fb = plane_state->fb; void *vmap = shadow_plane_state->data[0].vaddr; /* TODO: Use mapping abstraction */ - struct drm_device *dev = &sdev->dev; + struct drm_framebuffer *fb = plane_state->fb; + struct drm_device *dev = plane->dev; + struct simpledrm_device *sdev = simpledrm_device_of_dev(dev); void __iomem *dst = sdev->screen_base; struct drm_rect src_clip, dst_clip; int idx; @@ -545,7 +519,8 @@ simpledrm_simple_display_pipe_enable(struct drm_simple_display_pipe *pipe, if (!fb) return; - drm_rect_fp_to_int(&src_clip, &plane_state->src); + if (!drm_atomic_helper_damage_merged(old_plane_state, plane_state, &src_clip)) + return; dst_clip = plane_state->dst; if (!drm_rect_intersect(&dst_clip, &src_clip)) @@ -560,11 +535,11 @@ simpledrm_simple_display_pipe_enable(struct drm_simple_display_pipe *pipe, drm_dev_exit(idx); } -static void -simpledrm_simple_display_pipe_disable(struct drm_simple_display_pipe *pipe) +static void simpledrm_primary_plane_helper_atomic_disable(struct drm_plane *plane, + struct drm_atomic_state *old_state) { - struct simpledrm_device *sdev = simpledrm_device_of_dev(pipe->crtc.dev); - struct drm_device *dev = &sdev->dev; + struct drm_device *dev = plane->dev; + struct simpledrm_device *sdev = simpledrm_device_of_dev(dev); int idx; if (!drm_dev_enter(dev, &idx)) @@ -576,46 +551,105 @@ simpledrm_simple_display_pipe_disable(struct drm_simple_display_pipe *pipe) drm_dev_exit(idx); } -static void -simpledrm_simple_display_pipe_update(struct drm_simple_display_pipe *pipe, - struct drm_plane_state *old_plane_state) +static const struct drm_plane_helper_funcs simpledrm_primary_plane_helper_funcs = { + DRM_GEM_SHADOW_PLANE_HELPER_FUNCS, + .atomic_check = simpledrm_primary_plane_helper_atomic_check, + .atomic_update = simpledrm_primary_plane_helper_atomic_update, + .atomic_disable = simpledrm_primary_plane_helper_atomic_disable, +}; + +static const struct drm_plane_funcs simpledrm_primary_plane_funcs = { + .update_plane = drm_atomic_helper_update_plane, + .disable_plane = drm_atomic_helper_disable_plane, + .destroy = drm_plane_cleanup, + DRM_GEM_SHADOW_PLANE_FUNCS, +}; + +static enum drm_mode_status simpledrm_crtc_helper_mode_valid(struct drm_crtc *crtc, + const struct drm_display_mode *mode) { - struct simpledrm_device *sdev = simpledrm_device_of_dev(pipe->crtc.dev); - struct drm_plane_state *plane_state = pipe->plane.state; - struct drm_shadow_plane_state *shadow_plane_state = to_drm_shadow_plane_state(plane_state); - void *vmap = shadow_plane_state->data[0].vaddr; /* TODO: Use mapping abstraction */ - struct drm_framebuffer *fb = plane_state->fb; - struct drm_device *dev = &sdev->dev; - void __iomem *dst = sdev->screen_base; - struct drm_rect src_clip, dst_clip; - int idx; + struct simpledrm_device *sdev = simpledrm_device_of_dev(crtc->dev); - if (!fb) - return; + if (mode->hdisplay != sdev->mode.hdisplay && + mode->vdisplay != sdev->mode.vdisplay) + return MODE_ONE_SIZE; + else if (mode->hdisplay != sdev->mode.hdisplay) + return MODE_ONE_WIDTH; + else if (mode->vdisplay != sdev->mode.vdisplay) + return MODE_ONE_HEIGHT; - if (!drm_atomic_helper_damage_merged(old_plane_state, plane_state, &src_clip)) - return; + return MODE_OK; +} - dst_clip = plane_state->dst; - if (!drm_rect_intersect(&dst_clip, &src_clip)) - return; +static int simpledrm_crtc_helper_atomic_check(struct drm_crtc *crtc, + struct drm_atomic_state *new_state) +{ + struct drm_crtc_state *new_crtc_state = drm_atomic_get_new_crtc_state(new_state, crtc); + int ret; - if (!drm_dev_enter(dev, &idx)) - return; + ret = drm_atomic_helper_check_crtc_state(new_crtc_state, false); + if (ret) + return ret; - dst += drm_fb_clip_offset(sdev->pitch, sdev->format, &dst_clip); - drm_fb_blit_toio(dst, sdev->pitch, sdev->format->format, vmap, fb, &src_clip); + return drm_atomic_add_affected_planes(new_state, crtc); +} - drm_dev_exit(idx); +/* + * The CRTC is always enabled. Screen updates are performed by + * the primary plane's atomic_update function. Disabling clears + * the screen in the primary plane's atomic_disable function. + */ +static const struct drm_crtc_helper_funcs simpledrm_crtc_helper_funcs = { + .mode_valid = simpledrm_crtc_helper_mode_valid, + .atomic_check = simpledrm_crtc_helper_atomic_check, +}; + +static const struct drm_crtc_funcs simpledrm_crtc_funcs = { + .reset = drm_atomic_helper_crtc_reset, + .destroy = drm_crtc_cleanup, + .set_config = drm_atomic_helper_set_config, + .page_flip = drm_atomic_helper_page_flip, + .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state, +}; + +static const struct drm_encoder_funcs simpledrm_encoder_funcs = { + .destroy = drm_encoder_cleanup, +}; + +static int simpledrm_connector_helper_get_modes(struct drm_connector *connector) +{ + struct simpledrm_device *sdev = simpledrm_device_of_dev(connector->dev); + struct drm_display_mode *mode; + + mode = drm_mode_duplicate(connector->dev, &sdev->mode); + if (!mode) + return 0; + + if (mode->name[0] == '\0') + drm_mode_set_name(mode); + + mode->type |= DRM_MODE_TYPE_PREFERRED; + drm_mode_probed_add(connector, mode); + + if (mode->width_mm) + connector->display_info.width_mm = mode->width_mm; + if (mode->height_mm) + connector->display_info.height_mm = mode->height_mm; + + return 1; } -static const struct drm_simple_display_pipe_funcs -simpledrm_simple_display_pipe_funcs = { - .mode_valid = simpledrm_simple_display_pipe_mode_valid, - .enable = simpledrm_simple_display_pipe_enable, - .disable = simpledrm_simple_display_pipe_disable, - .update = simpledrm_simple_display_pipe_update, - DRM_GEM_SIMPLE_DISPLAY_PIPE_SHADOW_PLANE_FUNCS, +static const struct drm_connector_helper_funcs simpledrm_connector_helper_funcs = { + .get_modes = simpledrm_connector_helper_get_modes, +}; + +static const struct drm_connector_funcs simpledrm_connector_funcs = { + .reset = drm_atomic_helper_connector_reset, + .fill_modes = drm_helper_probe_single_connector_modes, + .destroy = drm_connector_cleanup, + .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, }; static const struct drm_mode_config_funcs simpledrm_mode_config_funcs = { @@ -653,10 +687,10 @@ static const uint32_t *simpledrm_device_formats(struct simpledrm_device *sdev, sdev->nformats = 1; /* default formats go second */ - for (i = 0; i < ARRAY_SIZE(simpledrm_default_formats); ++i) { - if (simpledrm_default_formats[i] == sdev->format->format) + for (i = 0; i < ARRAY_SIZE(simpledrm_primary_plane_formats); ++i) { + if (simpledrm_primary_plane_formats[i] == sdev->format->format) continue; /* native format already went first */ - sdev->formats[sdev->nformats] = simpledrm_default_formats[i]; + sdev->formats[sdev->nformats] = simpledrm_primary_plane_formats[i]; sdev->nformats++; } @@ -689,8 +723,10 @@ static struct simpledrm_device *simpledrm_device_create(struct drm_driver *drv, const struct drm_format_info *format; struct resource *res, *mem; void __iomem *screen_base; + struct drm_plane *primary_plane; + struct drm_crtc *crtc; + struct drm_encoder *encoder; struct drm_connector *connector; - struct drm_simple_display_pipe *pipe; unsigned long max_width, max_height; const uint32_t *formats; size_t nformats; @@ -802,6 +838,40 @@ static struct simpledrm_device *simpledrm_device_create(struct drm_driver *drv, dev->mode_config.preferred_depth = format->cpp[0] * 8; dev->mode_config.funcs = &simpledrm_mode_config_funcs; + /* Primary plane */ + + formats = simpledrm_device_formats(sdev, &nformats); + + primary_plane = &sdev->primary_plane; + ret = drm_universal_plane_init(dev, primary_plane, 0, &simpledrm_primary_plane_funcs, + formats, nformats, + simpledrm_primary_plane_format_modifiers, + DRM_PLANE_TYPE_PRIMARY, NULL); + if (ret) + return ERR_PTR(ret); + drm_plane_helper_add(primary_plane, &simpledrm_primary_plane_helper_funcs); + drm_plane_enable_fb_damage_clips(primary_plane); + + /* CRTC */ + + crtc = &sdev->crtc; + ret = drm_crtc_init_with_planes(dev, crtc, primary_plane, NULL, + &simpledrm_crtc_funcs, NULL); + if (ret) + return ERR_PTR(ret); + drm_crtc_helper_add(crtc, &simpledrm_crtc_helper_funcs); + + /* Encoder */ + + encoder = &sdev->encoder; + ret = drm_encoder_init(dev, encoder, &simpledrm_encoder_funcs, + DRM_MODE_ENCODER_NONE, NULL); + if (ret) + return ERR_PTR(ret); + encoder->possible_crtcs = drm_crtc_mask(crtc); + + /* Connector */ + connector = &sdev->connector; ret = drm_connector_init(dev, connector, &simpledrm_connector_funcs, DRM_MODE_CONNECTOR_Unknown); @@ -812,17 +882,10 @@ static struct simpledrm_device *simpledrm_device_create(struct drm_driver *drv, DRM_MODE_PANEL_ORIENTATION_UNKNOWN, width, height); - formats = simpledrm_device_formats(sdev, &nformats); - - pipe = &sdev->pipe; - ret = drm_simple_display_pipe_init(dev, pipe, &simpledrm_simple_display_pipe_funcs, - formats, nformats, simpledrm_format_modifiers, - connector); + ret = drm_connector_attach_encoder(connector, encoder); if (ret) return ERR_PTR(ret); - drm_plane_enable_fb_damage_clips(&pipe->plane); - drm_mode_config_reset(dev); return sdev; |