[PATCH 3/8] drm/vc4: Use drm_mode_vrefresh() in DSI fixup, in case vrefresh is 0.

From	Eric Anholt <eric@anholt.net>
Newsgroups	linux.kernel
Subject	[PATCH 3/8] drm/vc4: Use drm_mode_vrefresh() in DSI fixup, in case vrefresh is 0.
Date	2017-06-27 22:10 +0200
Message-ID	<tX4Y9-5uo-7@gated-at.bofh.it> (permalink)
References	<tX4Ou-5bs-11@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

I'm not sure what changed where I started getting vrefresh=0 from the
mode to be fixed up.

Signed-off-by: Eric Anholt <eric@anholt.net>
---
 drivers/gpu/drm/vc4/vc4_dsi.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/vc4/vc4_dsi.c b/drivers/gpu/drm/vc4/vc4_dsi.c
index 629d372633e6..fca4d7fd677e 100644
--- a/drivers/gpu/drm/vc4/vc4_dsi.c
+++ b/drivers/gpu/drm/vc4/vc4_dsi.c
@@ -866,7 +866,9 @@ static bool vc4_dsi_encoder_mode_fixup(struct drm_encoder *encoder,
 	adjusted_mode->clock = pixel_clock_hz / 1000 + 1;
 
 	/* Given the new pixel clock, adjust HFP to keep vrefresh the same. */
-	adjusted_mode->htotal = pixel_clock_hz / (mode->vrefresh * mode->vtotal);
+	adjusted_mode->htotal = pixel_clock_hz / (drm_mode_vrefresh(mode) *
+						  mode->vtotal);
+
 	adjusted_mode->hsync_end += adjusted_mode->htotal - mode->htotal;
 	adjusted_mode->hsync_start += adjusted_mode->htotal - mode->htotal;
 
-- 
2.11.0

Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

[PATCH 3/8] drm/vc4: Use drm_mode_vrefresh() in DSI fixup, in case vrefresh is 0. Eric Anholt <eric@anholt.net> - 2017-06-27 22:10 +0200
  Re: [PATCH 3/8] drm/vc4: Use drm_mode_vrefresh() in DSI fixup,  in case vrefresh is 0. Andrzej Hajda <a.hajda@samsung.com> - 2017-06-29 11:30 +0200

csiph-web