diff options
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_atomic.c | 85 |
1 files changed, 75 insertions, 10 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_atomic.c b/drivers/gpu/drm/i915/display/intel_atomic.c index 6621aa245caf..a9a3f3715279 100644 --- a/drivers/gpu/drm/i915/display/intel_atomic.c +++ b/drivers/gpu/drm/i915/display/intel_atomic.c @@ -41,6 +41,7 @@ #include "intel_global_state.h" #include "intel_hdcp.h" #include "intel_psr.h" +#include "intel_fb.h" #include "skl_universal_plane.h" /** @@ -310,11 +311,11 @@ intel_crtc_destroy_state(struct drm_crtc *crtc, kfree(crtc_state); } -static void intel_atomic_setup_scaler(struct intel_crtc_scaler_state *scaler_state, - int num_scalers_need, struct intel_crtc *intel_crtc, - const char *name, int idx, - struct intel_plane_state *plane_state, - int *scaler_id) +static int intel_atomic_setup_scaler(struct intel_crtc_scaler_state *scaler_state, + int num_scalers_need, struct intel_crtc *intel_crtc, + const char *name, int idx, + struct intel_plane_state *plane_state, + int *scaler_id) { struct drm_i915_private *dev_priv = to_i915(intel_crtc->base.dev); int j; @@ -334,7 +335,7 @@ static void intel_atomic_setup_scaler(struct intel_crtc_scaler_state *scaler_sta if (drm_WARN(&dev_priv->drm, *scaler_id < 0, "Cannot find scaler for %s:%d\n", name, idx)) - return; + return -EINVAL; /* set scaler mode */ if (plane_state && plane_state->hw.fb && @@ -375,9 +376,71 @@ static void intel_atomic_setup_scaler(struct intel_crtc_scaler_state *scaler_sta mode = SKL_PS_SCALER_MODE_DYN; } + /* + * FIXME: we should also check the scaler factors for pfit, so + * this shouldn't be tied directly to planes. + */ + if (plane_state && plane_state->hw.fb) { + const struct drm_framebuffer *fb = plane_state->hw.fb; + const struct drm_rect *src = &plane_state->uapi.src; + const struct drm_rect *dst = &plane_state->uapi.dst; + int hscale, vscale, max_vscale, max_hscale; + + /* + * FIXME: When two scalers are needed, but only one of + * them needs to downscale, we should make sure that + * the one that needs downscaling support is assigned + * as the first scaler, so we don't reject downscaling + * unnecessarily. + */ + + if (DISPLAY_VER(dev_priv) >= 14) { + /* + * On versions 14 and up, only the first + * scaler supports a vertical scaling factor + * of more than 1.0, while a horizontal + * scaling factor of 3.0 is supported. + */ + max_hscale = 0x30000 - 1; + if (*scaler_id == 0) + max_vscale = 0x30000 - 1; + else + max_vscale = 0x10000; + + } else if (DISPLAY_VER(dev_priv) >= 10 || + !intel_format_info_is_yuv_semiplanar(fb->format, fb->modifier)) { + max_hscale = 0x30000 - 1; + max_vscale = 0x30000 - 1; + } else { + max_hscale = 0x20000 - 1; + max_vscale = 0x20000 - 1; + } + + /* + * FIXME: We should change the if-else block above to + * support HQ vs dynamic scaler properly. + */ + + /* Check if required scaling is within limits */ + hscale = drm_rect_calc_hscale(src, dst, 1, max_hscale); + vscale = drm_rect_calc_vscale(src, dst, 1, max_vscale); + + if (hscale < 0 || vscale < 0) { + drm_dbg_kms(&dev_priv->drm, + "Scaler %d doesn't support required plane scaling\n", + *scaler_id); + drm_rect_debug_print("src: ", src, true); + drm_rect_debug_print("dst: ", dst, false); + + return -EINVAL; + } + } + drm_dbg_kms(&dev_priv->drm, "Attached scaler id %u.%u to %s:%d\n", intel_crtc->pipe, *scaler_id, name, idx); scaler_state->scalers[*scaler_id].mode = mode; + + return 0; } /** @@ -437,7 +500,7 @@ int intel_atomic_setup_scalers(struct drm_i915_private *dev_priv, for (i = 0; i < sizeof(scaler_state->scaler_users) * 8; i++) { int *scaler_id; const char *name; - int idx; + int idx, ret; /* skip if scaler not required */ if (!(scaler_state->scaler_users & (1 << i))) @@ -494,9 +557,11 @@ int intel_atomic_setup_scalers(struct drm_i915_private *dev_priv, scaler_id = &plane_state->scaler_id; } - intel_atomic_setup_scaler(scaler_state, num_scalers_need, - intel_crtc, name, idx, - plane_state, scaler_id); + ret = intel_atomic_setup_scaler(scaler_state, num_scalers_need, + intel_crtc, name, idx, + plane_state, scaler_id); + if (ret < 0) + return ret; } return 0; |