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disp: msm: sde: disable border color on empty blendstage

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This change disables the border color on the layer mixer,
based on the caller's request. This is required to totally
disconnect the layer mixer hardware when it is not
participating in blending the pixels. Having empty blendstage
but border color enabled, allows Layer mixer hw to produce
border pixels even when blend stage is empty.

Change-Id: I8e84aeedffbd42ad793a167a6cc5a3a653864c1a
Signed-off-by: Abhijit Kulkarni <kabhijit@codeaurora.org>
This commit is contained in:
Abhijit Kulkarni
2020-08-07 12:58:19 -07:00
parent faf4a8b1c8
commit 9c9159afdb
4 changed files with 15 additions and 10 deletions
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8
msm/sde/sde_hw_ctl.c
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@@ -946,7 +946,8 @@ static void _sde_hw_ctl_get_mixer_cfg(struct sde_hw_ctl *ctx,
}
static void sde_hw_ctl_setup_blendstage(struct sde_hw_ctl *ctx,
enum sde_lm lm, struct sde_hw_stage_cfg *stage_cfg)
enum sde_lm lm, struct sde_hw_stage_cfg *stage_cfg,
bool disable_border)
{
struct sde_hw_blk_reg_map *c;
struct sde_ctl_mixer_cfg cfg = { 0 };
@@ -964,8 +965,9 @@ static void sde_hw_ctl_setup_blendstage(struct sde_hw_ctl *ctx,
if (stage_cfg)
_sde_hw_ctl_get_mixer_cfg(ctx, stage_cfg, stages, &cfg);
if ((!cfg.cfg && !cfg.ext && !cfg.ext2 && !cfg.ext3) ||
(stage_cfg && !stage_cfg->stage[0][0]))
if (!disable_border &&
((!cfg.cfg && !cfg.ext && !cfg.ext2 && !cfg.ext3) ||
(stage_cfg && !stage_cfg->stage[0][0])))
cfg.cfg |= CTL_MIXER_BORDER_OUT;
SDE_REG_WRITE(c, CTL_LAYER(lm), cfg.cfg);