From e41a56be017c6e2891603c678ef2187c437d4414 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Tue, 1 Oct 2013 22:52:14 +0300 Subject: [PATCH] drm/i915: Don't populate pipe_src_{w,h} multiple times MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit If we ever end up doing the retry loop due to bandwidth constraints, we would rewrite pipe_src_{w,n} based on adjusted_mode timings. But by that time the encoder may have already replaced the adjusted_mode with a fixed panel mode, which would then corrupt pipe_src_{w,h}. v2: Use requested_mode and slap on a big comment from Daniel Signed-off-by: Ville Syrjälä Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_display.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 26b8392a837a..d9f698e9ab1c 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -8529,6 +8529,18 @@ intel_modeset_pipe_config(struct drm_crtc *crtc, if (plane_bpp < 0) goto fail; + /* + * Determine the real pipe dimensions. Note that stereo modes can + * increase the actual pipe size due to the frame doubling and + * insertion of additional space for blanks between the frame. This + * is stored in the crtc timings. We use the requested mode to do this + * computation to clearly distinguish it from the adjusted mode, which + * can be changed by the connectors in the below retry loop. + */ + drm_mode_set_crtcinfo(&pipe_config->requested_mode, CRTC_STEREO_DOUBLE); + pipe_config->pipe_src_w = pipe_config->requested_mode.crtc_hdisplay; + pipe_config->pipe_src_h = pipe_config->requested_mode.crtc_vdisplay; + encoder_retry: /* Ensure the port clock defaults are reset when retrying. */ pipe_config->port_clock = 0; @@ -8537,10 +8549,6 @@ intel_modeset_pipe_config(struct drm_crtc *crtc, /* Fill in default crtc timings, allow encoders to overwrite them. */ drm_mode_set_crtcinfo(&pipe_config->adjusted_mode, CRTC_STEREO_DOUBLE); - /* set_crtcinfo() may have adjusted hdisplay/vdisplay */ - pipe_config->pipe_src_w = pipe_config->adjusted_mode.crtc_hdisplay; - pipe_config->pipe_src_h = pipe_config->adjusted_mode.crtc_vdisplay; - /* Pass our mode to the connectors and the CRTC to give them a chance to * adjust it according to limitations or connector properties, and also * a chance to reject the mode entirely. -- GitLab