evie/android_kernel_oneplus_msm8998
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fbdev: msm: Reserve mixers with dspp for primary display

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Avoid allocating mixers LM0 and LM1 to external display and
writeback as they are allocated to primary display first.

Change-Id: I343a70dca2e664e5c9765fa2f0b933714b747b4a
Signed-off-by: Krishna Manikandan <mkrishn@codeaurora.org>
This commit is contained in:
Krishna Manikandan 2017-06-09 11:03:31 +05:30
parent 9725c4d90b
commit e2c351c864
1 changed files with 17 additions and 1 deletions
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18
drivers/video/fbdev/msm/mdss_mdp_ctl.c
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@ -2513,6 +2513,7 @@ struct mdss_mdp_mixer *mdss_mdp_mixer_alloc(
u32 nmixers_wb;
u32 i;
u32 nmixers;
u32 nmixers_active;
struct mdss_mdp_mixer *mixer_pool = NULL;
if (!ctl || !ctl->mdata)
@ -2526,10 +2527,21 @@ struct mdss_mdp_mixer *mdss_mdp_mixer_alloc(
case MDSS_MDP_MIXER_TYPE_INTF:
mixer_pool = ctl->mdata->mixer_intf;
nmixers = nmixers_intf;
nmixers_active = nmixers;
for (i = 0; i < nmixers; i++) {
mixer = mixer_pool + i;
if (mixer->ref_cnt)
nmixers_active--;
}
mixer = NULL;
/*
* try to reserve first layer mixer for write back if
* assertive display needs to be supported through wfd
* assertive display needs to be supported through wfd.
* For external displays(pluggable) and writeback avoid
* allocating mixers LM0 and LM1 which are allocated
* to primary display first.
*/
if (ctl->mdata->has_wb_ad && ctl->intf_num &&
((ctl->panel_data->panel_info.type != MIPI_CMD_PANEL) ||
@ -2541,6 +2553,10 @@ struct mdss_mdp_mixer *mdss_mdp_mixer_alloc(
&& (ctl->mdata->ndspp < nmixers)) {
mixer_pool += ctl->mdata->ndspp;
nmixers -= ctl->mdata->ndspp;
} else if ((ctl->panel_data->panel_info.is_pluggable) &&
nmixers_active) {
mixer_pool += ctl->mdata->ndspp;
nmixers -= ctl->mdata->ndspp;
}
break;