From e5c059316cb2e443710a63e9a60a0f84bfc0fce2 Mon Sep 17 00:00:00 2001 From: Shashank Sharma Date: Fri, 21 Jul 2017 20:55:05 +0530 Subject: [PATCH] drm/i915: prepare scaler for YCBCR420 modeset Git-commit: e5c059316cb2e443710a63e9a60a0f84bfc0fce2 Patch-mainline: v4.14-rc1 References: FATE#322643 bsc#1055900 To get a YCBCR420 output from intel platforms, we need one scaler to scale down YCBCR444 samples to YCBCR420 samples. This patch: - Does scaler allocation for HDMI ycbcr420 outputs. - Programs PIPE_MISC register for ycbcr420 output. V2: rebase V3: rebase V4: rebase V5: addressed review comments from Ander: - No need to check both scaler_user && hdmi_output. Check for scaler_user is enough. V6: rebase V7: Do not create a new scaler user, use existing pipe scaler user. V8: rebase V9: Addressed review comments from Ville: - Remove leftover comment for HDMI scaler user. - Remove unnecessary blank line. - Make scaler alocation failure a DEBUG log instead of ERROR. Added r-b from Ville V10: Update commit message as per latest code (Imre) Added r-b from Imre Cc: Ville Syrjala Cc: Ander Conselvan De Oliveira Cc: Imre Deak Reviewed-by: Ville Syrjala Reviewed-by: Imre Deak Signed-off-by: Shashank Sharma Signed-off-by: Imre Deak Link: https://patchwork.freedesktop.org/patch/msgid/1500650709-14447-3-git-send-email-shashank.sharma@intel.com Signed-off-by: Daniel Vetter Acked-by: Takashi Iwai --- drivers/gpu/drm/i915/intel_display.c | 3 +++ drivers/gpu/drm/i915/intel_hdmi.c | 12 ++++++++++++ drivers/gpu/drm/i915/intel_panel.c | 3 ++- 3 files changed, 17 insertions(+), 1 deletion(-) --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -4494,6 +4494,9 @@ skl_update_scaler(struct intel_crtc_stat */ need_scaling = src_w != dst_w || src_h != dst_h; + if (crtc_state->ycbcr420 && scaler_user == SKL_CRTC_INDEX) + need_scaling = true; + /* * Scaling/fitting not supported in IF-ID mode in GEN9+ * TODO: Interlace fetch mode doesn't support YUV420 planar formats. --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -1355,6 +1355,8 @@ intel_hdmi_ycbcr420_config(struct drm_co struct intel_crtc_state *config, int *clock_12bpc, int *clock_8bpc) { + struct intel_crtc *intel_crtc = to_intel_crtc(config->base.crtc); + if (!connector->ycbcr_420_allowed) { DRM_ERROR("Platform doesn't support YCBCR420 output\n"); return false; @@ -1365,6 +1367,16 @@ intel_hdmi_ycbcr420_config(struct drm_co *clock_12bpc /= 2; *clock_8bpc /= 2; config->ycbcr420 = true; + + /* YCBCR 420 output conversion needs a scaler */ + if (skl_update_scaler_crtc(config)) { + DRM_DEBUG_KMS("Scaler allocation for output failed\n"); + return false; + } + + intel_pch_panel_fitting(intel_crtc, config, + DRM_MODE_SCALE_FULLSCREEN); + return true; } --- a/drivers/gpu/drm/i915/intel_panel.c +++ b/drivers/gpu/drm/i915/intel_panel.c @@ -110,7 +110,8 @@ intel_pch_panel_fitting(struct intel_crt /* Native modes don't need fitting */ if (adjusted_mode->crtc_hdisplay == pipe_config->pipe_src_w && - adjusted_mode->crtc_vdisplay == pipe_config->pipe_src_h) + adjusted_mode->crtc_vdisplay == pipe_config->pipe_src_h && + !pipe_config->ycbcr420) goto done; switch (fitting_mode) {