evie/android_kernel_oneplus_msm8998
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msm: mdss: use usleep_range instead of msleep in mdss util

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msleep API runs in atomic context and can add extra delay
after sleep timeout. This can add extra delays for panel
regulator turn on/off sequence which affects device
suspend/resume timing. Moving to usleep_range enables the
delay backed by hrtimers.

Change-Id: Id9e50ab02c0166de41316eeb948e93cdce432e15
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>
[cip@codeaurora.org: Resolved merge conflicts]
Signed-off-by: Clarence Ip <cip@codeaurora.org>
This commit is contained in:
Clarence Ip 2016-02-23 17:51:27 -05:00 • committed by David Keitel
parent 5214f4a020
commit 07c71c6ce4
1 changed files with 12 additions and 6 deletions
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18
drivers/video/fbdev/msm/mdss_io_util.c
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@ -224,7 +224,8 @@ int msm_dss_enable_vreg(struct dss_vreg *in_vreg, int num_vreg, int enable)
}
need_sleep = !regulator_is_enabled(in_vreg[i].vreg);
if (in_vreg[i].pre_on_sleep && need_sleep)
msleep(in_vreg[i].pre_on_sleep);
usleep_range(in_vreg[i].pre_on_sleep,
in_vreg[i].pre_on_sleep);
rc = regulator_set_load(in_vreg[i].vreg,
in_vreg[i].enable_load);
if (rc < 0) {
@ -235,7 +236,8 @@ int msm_dss_enable_vreg(struct dss_vreg *in_vreg, int num_vreg, int enable)
}
rc = regulator_enable(in_vreg[i].vreg);
if (in_vreg[i].post_on_sleep && need_sleep)
msleep(in_vreg[i].post_on_sleep);
usleep_range(in_vreg[i].post_on_sleep,
in_vreg[i].post_on_sleep);
if (rc < 0) {
DEV_ERR("%pS->%s: %s enable failed\n",
__builtin_return_address(0), __func__,
@ -246,12 +248,14 @@ int msm_dss_enable_vreg(struct dss_vreg *in_vreg, int num_vreg, int enable)
} else {
for (i = num_vreg-1; i >= 0; i--) {
if (in_vreg[i].pre_off_sleep)
msleep(in_vreg[i].pre_off_sleep);
usleep_range(in_vreg[i].pre_off_sleep,
in_vreg[i].pre_off_sleep);
regulator_set_load(in_vreg[i].vreg,
in_vreg[i].disable_load);
regulator_disable(in_vreg[i].vreg);
if (in_vreg[i].post_off_sleep)
msleep(in_vreg[i].post_off_sleep);
usleep_range(in_vreg[i].post_off_sleep,
in_vreg[i].post_off_sleep);
}
}
return rc;
@ -262,12 +266,14 @@ disable_vreg:
vreg_set_opt_mode_fail:
for (i--; i >= 0; i--) {
if (in_vreg[i].pre_off_sleep)
msleep(in_vreg[i].pre_off_sleep);
usleep_range(in_vreg[i].pre_off_sleep,
in_vreg[i].pre_off_sleep);
regulator_set_load(in_vreg[i].vreg,
in_vreg[i].disable_load);
regulator_disable(in_vreg[i].vreg);
if (in_vreg[i].post_off_sleep)
msleep(in_vreg[i].post_off_sleep);
usleep_range(in_vreg[i].post_off_sleep,
in_vreg[i].post_off_sleep);
}
return rc;