[v4,4/4] drm/bridge: tfp410: Fix setup and hold time calculation
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Message ID 20200617094633.19663-5-ricardo.canuelo@collabora.com
State New
Headers show
Series
  • dt-bindings: display: ti,tfp410.txt: convert to yaml
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Commit Message

Ricardo Cañuelo June 17, 2020, 9:46 a.m. UTC
This fixes a bug in the calculation of the setup and hold times based on
the deskew configuration.

Signed-off-by: Ricardo Cañuelo <ricardo.canuelo@collabora.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
 drivers/gpu/drm/bridge/ti-tfp410.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Patch
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diff --git a/drivers/gpu/drm/bridge/ti-tfp410.c b/drivers/gpu/drm/bridge/ti-tfp410.c
index dfde811f3411..21d99b4ea0c9 100644
--- a/drivers/gpu/drm/bridge/ti-tfp410.c
+++ b/drivers/gpu/drm/bridge/ti-tfp410.c
@@ -278,8 +278,8 @@  static int tfp410_parse_timings(struct tfp410 *dvi, bool i2c)
 	if (deskew > 7)
 		return -EINVAL;
 
-	timings->setup_time_ps = min(0, 1200 - 350 * ((s32)deskew - 4));
-	timings->hold_time_ps = min(0, 1300 + 350 * ((s32)deskew - 4));
+	timings->setup_time_ps = 1200 - 350 * ((s32)deskew - 4);
+	timings->hold_time_ps = max(0, 1300 + 350 * ((s32)deskew - 4));
 
 	return 0;
 }