evie/android_kernel_oneplus_msm8998
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msm: mdss: disable auto refresh before configuring tearcheck

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If auto refresh mode is enabled in LK, then it needs be disabled
when kernel loads. Otherwise it might cause display corruption,
when in kernel display again configures tearcheck block.

Change-Id: I0b4dddee25e39cea4f32b8afd537993ad64ea812
Signed-off-by: Sandeep Panda <spanda@codeaurora.org>
This commit is contained in:
Sandeep Panda 2015-12-04 16:10:37 +05:30 • committed by David Keitel
parent 3d2a71a568
commit 3d3dd8c529
1 changed files with 25 additions and 1 deletions
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26
drivers/video/fbdev/msm/mdss_mdp_intf_cmd.c
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@ -303,11 +303,35 @@ static int mdss_mdp_cmd_tearcheck_setup(struct mdss_mdp_cmd_ctx *ctx,
bool locked) bool locked)
{ {
int rc = 0; int rc = 0;
struct mdss_mdp_mixer *mixer; struct mdss_mdp_mixer *mixer = NULL, *mixer_right = NULL;
struct mdss_mdp_ctl *ctl = ctx->ctl; struct mdss_mdp_ctl *ctl = ctx->ctl;
struct mdss_data_type *mdata = mdss_mdp_get_mdata();
u32 offset = 0;
mixer = mdss_mdp_mixer_get(ctl, MDSS_MDP_MIXER_MUX_LEFT); mixer = mdss_mdp_mixer_get(ctl, MDSS_MDP_MIXER_MUX_LEFT);
if (mixer) { if (mixer) {
/*
* Disable auto refresh mode, if enabled in splash to
* avoid corruption.
*/
if (mdss_mdp_pingpong_read(mixer->pingpong_base,
MDSS_MDP_REG_PP_AUTOREFRESH_CONFIG) & BIT(31)) {
offset = MDSS_MDP_REG_PP_AUTOREFRESH_CONFIG;
if (is_pingpong_split(ctl->mfd))
writel_relaxed(0x0,
(mdata->slave_pingpong_base + offset));
if (is_split_lm(ctl->mfd)) {
mixer_right =
mdss_mdp_mixer_get(ctl,
MDSS_MDP_MIXER_MUX_RIGHT);
if (mixer_right)
writel_relaxed(0x0,
(mixer_right->pingpong_base + offset));
}
mdss_mdp_pingpong_write(mixer->pingpong_base,
MDSS_MDP_REG_PP_AUTOREFRESH_CONFIG, 0x0);
pr_debug("%s: disabling auto refresh\n", __func__);
}
rc = mdss_mdp_cmd_tearcheck_cfg(mixer, ctx, locked); rc = mdss_mdp_cmd_tearcheck_cfg(mixer, ctx, locked);
if (rc) if (rc)
goto err; goto err;