From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> Windows code seems to do some dodgy looking +/-1 adjustments to some of the vertical timings. Not sure if that's correct or not, but let's at least cross check some of the values we got from the hardware to double check whether the GOP did the same or not. Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> --- drivers/gpu/drm/i915/display/vlv_dsi.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/vlv_dsi.c b/drivers/gpu/drm/i915/display/vlv_dsi.c index 661de51dfd22..cdab04727c7d 100644 --- a/drivers/gpu/drm/i915/display/vlv_dsi.c +++ b/drivers/gpu/drm/i915/display/vlv_dsi.c @@ -1024,7 +1024,7 @@ static void bxt_dsi_get_pipe_config(struct intel_encoder *encoder, unsigned int lane_count = intel_dsi->lane_count; unsigned int bpp, fmt; enum port port; - u16 hactive, hfp, hsync, hbp, vfp, vsync; + u16 hactive, hfp, hsync, hbp, vfp, vsync, vbp; u16 hfp_sw, hsync_sw, hbp_sw; u16 crtc_htotal_sw, crtc_hsync_start_sw, crtc_hsync_end_sw, crtc_hblank_start_sw, crtc_hblank_end_sw; @@ -1088,6 +1088,7 @@ static void bxt_dsi_get_pipe_config(struct intel_encoder *encoder, /* vertical values are in terms of lines */ vfp = intel_de_read(display, MIPI_VFP_COUNT(display, port)); + vbp = intel_de_read(display, MIPI_VBP_COUNT(display, port)); vsync = intel_de_read(display, MIPI_VSYNC_PADDING_COUNT(display, port)); adjusted_mode->crtc_htotal = hactive + hfp + hsync + hbp; @@ -1096,6 +1097,8 @@ static void bxt_dsi_get_pipe_config(struct intel_encoder *encoder, adjusted_mode->crtc_hblank_start = adjusted_mode->crtc_hdisplay; adjusted_mode->crtc_hblank_end = adjusted_mode->crtc_htotal; + drm_WARN_ON(display->drm, adjusted_mode->crtc_vdisplay + + vfp + vsync + vbp != adjusted_mode->crtc_vtotal); adjusted_mode->crtc_vsync_start = vfp + adjusted_mode->crtc_vdisplay; adjusted_mode->crtc_vsync_end = vsync + adjusted_mode->crtc_vsync_start; adjusted_mode->crtc_vblank_start = adjusted_mode->crtc_vdisplay; -- 2.45.3
