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OMAPDSS: HDMI: make hdmi pclk check more permissive 

The hdmi driver tries to find the given video timings from its static
list of timings, to find the required ID for the mode. The check tries
to find exact match for the pixel clock, among other checks.

with omapfb driver there can be some amount of error in the give pixel
clock, as the pixel clock is converted between Hz and ps, thus the
hdmi's check fails to find the mode.

This patch makes the check more allowing, by rounding the pixel clocks
to nearest MHz.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Ricardo Neri <ricardo.neri@ti.com>
This commit is contained in:
Tomi Valkeinen 2012-10-24 11:55:54 +03:00
parent 7a7ce2c771
commit f236b892b1
1 changed files with 2 additions and 1 deletions
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3
drivers/video/omap2/dss/hdmi.c
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@ -404,7 +404,8 @@ static bool hdmi_timings_compare(struct omap_video_timings *timing1,
{
int timing1_vsync, timing1_hsync, timing2_vsync, timing2_hsync;
if ((timing2->pixel_clock == timing1->pixel_clock) &&
if ((DIV_ROUND_CLOSEST(timing2->pixel_clock, 1000) ==
DIV_ROUND_CLOSEST(timing1->pixel_clock, 1000)) &&
(timing2->x_res == timing1->x_res) &&
(timing2->y_res == timing1->y_res)) {