evie/android_kernel_oneplus_msm8998
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msm: mdss: control when MMSS GDSC gets turned off

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RPM has no way to know if they have to disable the MMSS gdsc
during idle power collapse or if its a full suspend.
Setting up the RPM RAM msg to 1 going into idle power collapse
and setting it to 0 while going to full suspend.
All these states mentioned are from a display point of
view.

Crs-Fixed: 1068650
Change-Id: I0ed47e89f6a4dd332ff28e8a1203ae3bfe44e7fa
Signed-off-by: Siddhartha Agrawal <agrawals@codeaurora.org>
This commit is contained in:
Siddhartha Agrawal 2016-09-22 11:01:40 -07:00
parent 9e2d528dc4
commit 6883756a33
2 changed files with 31 additions and 0 deletions
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1
drivers/video/fbdev/msm/mdss.h
View file

@ -163,6 +163,7 @@ enum mdss_hw_quirk {
MDSS_QUIRK_FMT_PACK_PATTERN,
MDSS_QUIRK_NEED_SECURE_MAP,
MDSS_QUIRK_SRC_SPLIT_ALWAYS,
MDSS_QUIRK_MMSS_GDSC_COLLAPSE,
MDSS_QUIRK_MAX,
};

30
drivers/video/fbdev/msm/mdss_mdp.c
View file

@ -1831,6 +1831,20 @@ static u32 mdss_get_props(void)
return props;
}
static void mdss_rpm_set_msg_ram(bool enable)
{
u32 read_reg = 0;
void __iomem *rpm_msg_ram = ioremap(0x7781FC, 4);
if (rpm_msg_ram) {
writel_relaxed(enable, rpm_msg_ram);
read_reg = readl_relaxed(rpm_msg_ram);
pr_debug("%s enable=%d read_val=%x\n", __func__, enable,
read_reg);
iounmap(rpm_msg_ram);
}
}
void mdss_mdp_init_default_prefill_factors(struct mdss_data_type *mdata)
{
mdata->prefill_data.prefill_factors.fmt_mt_nv12_factor = 8;
@ -1998,6 +2012,7 @@ static void mdss_mdp_hw_rev_caps_init(struct mdss_data_type *mdata)
mdss_mdp_init_default_prefill_factors(mdata);
mdss_set_quirk(mdata, MDSS_QUIRK_DSC_RIGHT_ONLY_PU);
mdss_set_quirk(mdata, MDSS_QUIRK_DSC_2SLICE_PU_THRPUT);
mdss_set_quirk(mdata, MDSS_QUIRK_MMSS_GDSC_COLLAPSE);
mdata->has_wb_ubwc = true;
set_bit(MDSS_CAPS_10_BIT_SUPPORTED, mdata->mdss_caps_map);
set_bit(MDSS_CAPS_AVR_SUPPORTED, mdata->mdss_caps_map);
@ -4879,6 +4894,13 @@ static void mdss_mdp_footswitch_ctrl(struct mdss_data_type *mdata, int on)
pr_debug("Disable MDP FS\n");
active_cnt = atomic_read(&mdata->active_intf_cnt);
if (active_cnt != 0) {
/*
* Advise RPM to not turn MMSS GDSC off during
* idle case.
*/
if (mdss_has_quirk(mdata,
MDSS_QUIRK_MMSS_GDSC_COLLAPSE))
mdss_rpm_set_msg_ram(true);
/*
* Turning off GDSC while overlays are still
* active.
@ -4888,6 +4910,14 @@ static void mdss_mdp_footswitch_ctrl(struct mdss_data_type *mdata, int on)
active_cnt);
mdss_mdp_memory_retention_enter();
} else {
/*
* Advise RPM to turn MMSS GDSC off during
* suspend case
*/
if (mdss_has_quirk(mdata,
MDSS_QUIRK_MMSS_GDSC_COLLAPSE))
mdss_rpm_set_msg_ram(false);
mdss_mdp_cx_ctrl(mdata, false);
mdss_mdp_batfet_ctrl(mdata, false);
}