evie/android_kernel_oneplus_msm8998
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msm: mdss: fix OT limit configuration for WB1 module

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Each VBIF client can be configured for its number of outstanding (OT)
transactions. Currently we can have as high as 13 of these VBIF clients
within MDP. OT configuration for these clients is spread across multiple
registers. Current implementation of rotator OT limit is not considering
these multiple registers which leads to incorrect OT limit configuration
for WB1 WR VBIF client. Fix this by adding logic to select correct
register offset.

Change-Id: I7b4f7ac37ff5c8a85f35dbeb6a6c450b157c4b3a
Signed-off-by: Ujwal Patel <ujwalp@codeaurora.org>
This commit is contained in:
Ujwal Patel 2014-05-13 12:35:50 -07:00 • committed by David Keitel
parent 0c5fe51e41
commit 6e50390b3f
1 changed files with 11 additions and 6 deletions
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17
drivers/video/fbdev/msm/mdss_mdp_intf_writeback.c
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@ -475,7 +475,7 @@ static int mdss_mdp_writeback_display(struct mdss_mdp_ctl *ctl, void *arg)
{
struct mdss_mdp_writeback_ctx *ctx;
struct mdss_mdp_writeback_arg *wb_args;
u32 flush_bits, val, off;
u32 flush_bits, val, bit_off, reg_off;
int ret;
if (!ctl || !ctl->mdata)
@ -496,11 +496,16 @@ static int mdss_mdp_writeback_display(struct mdss_mdp_ctl *ctl, void *arg)
ctx->wr_lim = ctl->mdata->rotator_ot_limit;
else
ctx->wr_lim = MDSS_DEFAULT_OT_SETTING;
off = (ctx->xin_id % 4) * 8;
val = readl_relaxed(ctl->mdata->vbif_base + VBIF_WR_LIM_CONF);
val &= ~(0xFF << off);
val |= (ctx->wr_lim) << off;
writel_relaxed(val, ctl->mdata->vbif_base + VBIF_WR_LIM_CONF);
reg_off = (ctx->xin_id / 4) * 4;
bit_off = (ctx->xin_id % 4) * 8;
val = readl_relaxed(ctl->mdata->vbif_base + VBIF_WR_LIM_CONF +
reg_off);
val &= ~(0xFF << bit_off);
val |= (ctx->wr_lim) << bit_off;
writel_relaxed(val, ctl->mdata->vbif_base + VBIF_WR_LIM_CONF +
reg_off);
}
wb_args = (struct mdss_mdp_writeback_arg *) arg;