evie/android_kernel_oneplus_msm8998
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Merge "mdss: display-port: fix link rate calculation"

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Linux Build Service Account 2016-11-14 21:53:59 -08:00 • committed by Gerrit - the friendly Code Review server
commit a4bd3599a0
1 changed files with 9 additions and 3 deletions
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12
drivers/video/fbdev/msm/mdss_dp_aux.c
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@ -514,7 +514,7 @@ char mdss_dp_gen_link_clk(struct mdss_panel_info *pinfo, char lane_cnt)
{
const u32 encoding_factx10 = 8;
const u32 ln_to_link_ratio = 10;
u32 min_link_rate;
u32 min_link_rate, reminder = 0;
char calc_link_rate = 0;
pr_debug("clk_rate=%llu, bpp= %d, lane_cnt=%d\n",
@ -531,9 +531,15 @@ char mdss_dp_gen_link_clk(struct mdss_panel_info *pinfo, char lane_cnt)
(lane_cnt * encoding_factx10));
min_link_rate /= ln_to_link_ratio;
min_link_rate = (min_link_rate * pinfo->bpp);
min_link_rate = (u32)div_u64(min_link_rate * 10,
DP_LINK_RATE_MULTIPLIER);
min_link_rate = (u32)div_u64_rem(min_link_rate * 10,
DP_LINK_RATE_MULTIPLIER, &reminder);
/*
* To avoid any fractional values,
* increment the min_link_rate
*/
if (reminder)
min_link_rate += 1;
pr_debug("min_link_rate = %d\n", min_link_rate);
if (min_link_rate <= DP_LINK_RATE_162)