[v2,02/15] drm/mxsfb: Read bus flags from bridge if present
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Message ID 1565779731-1300-3-git-send-email-robert.chiras@nxp.com
State New
Headers show
Series
  • Improvements and fixes for mxsfb DRM driver
Related show

Commit Message

Robert Chiras Aug. 14, 2019, 10:48 a.m. UTC
From: Guido Günther <agx@sigxcpu.org>

The bridge might have special requirmentes on the input bus. This
is e.g. used by the imx-nwl bridge.

Signed-off-by: Guido Günther <agx@sigxcpu.org>
Reviewed-by: Stefan Agner <stefan@agner.ch>
---
 drivers/gpu/drm/mxsfb/mxsfb_crtc.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

Patch
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diff --git a/drivers/gpu/drm/mxsfb/mxsfb_crtc.c b/drivers/gpu/drm/mxsfb/mxsfb_crtc.c
index de09b93..b69ace8 100644
--- a/drivers/gpu/drm/mxsfb/mxsfb_crtc.c
+++ b/drivers/gpu/drm/mxsfb/mxsfb_crtc.c
@@ -209,7 +209,7 @@  static void mxsfb_crtc_mode_set_nofb(struct mxsfb_drm_private *mxsfb)
 {
 	struct drm_device *drm = mxsfb->pipe.crtc.dev;
 	struct drm_display_mode *m = &mxsfb->pipe.crtc.state->adjusted_mode;
-	const u32 bus_flags = mxsfb->connector->display_info.bus_flags;
+	u32 bus_flags = mxsfb->connector->display_info.bus_flags;
 	u32 vdctrl0, vsync_pulse_len, hsync_pulse_len;
 	int err;
 
@@ -233,6 +233,9 @@  static void mxsfb_crtc_mode_set_nofb(struct mxsfb_drm_private *mxsfb)
 
 	clk_set_rate(mxsfb->clk, m->crtc_clock * 1000);
 
+	if (mxsfb->bridge && mxsfb->bridge->timings)
+		bus_flags = mxsfb->bridge->timings->input_bus_flags;
+
 	DRM_DEV_DEBUG_DRIVER(drm->dev, "Pixel clock: %dkHz (actual: %dkHz)\n",
 			     m->crtc_clock,
 			     (int)(clk_get_rate(mxsfb->clk) / 1000));