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作者 SHA1 備註 日期
Samantha Tran
df3f51f9c4 disp: msm: replace PTR_RET with PTR_ERR_OR_ZERO
Commit fad7c9020948 ("err.h: remove deprecated PTR_RET for good")
deprecated PTR_RET. This change updates the msm driver by
replacing it with PTR_ERR_OR_ZERO.

Change-Id: Ibe8cefd7b9ce27dc63886eb3861aab5fc8ba268a
Signed-off-by: Samantha Tran <samtran@codeaurora.org>
Signed-off-by: Nilaan Gunabalachandran <ngunabal@codeaurora.org>
2020-12-17 09:58:38 -05:00
Zhao, Yuan
d9c2a8d3a6 disp: msm: disable regulator load after the regulator was disabled
Setting a lower load can make the regulator enter into LPM. Now the
lower load was set before the regulator disable, there's a risk here.
The regulator has been LPM, while it was not disable, if the cosumer
has a higher current needed than LPM at this time, that will lead OCP
on this regulator. The right operation for a regulator enable/disable
should be:
 1. regulator_set_voltage(vreg, active_min_uV, active_max_uV) and
    regulator_set_load(vreg, active_load_uA); in either order
 2. regulator_enable()
 3. regulator_disable()
 4. regulator_set_voltage(vreg, inactive_min_uV, inactive_max_uV)
    and regulator_set_load(vreg, inactive_load_uA); in either order

Change-Id: Ibe4f888a5675baf2691e479daa163d8867902e69
Signed-off-by: Zhao, Yuan <yzhao@codeaurora.org>
2020-09-22 00:45:36 -07:00
Narendra Muppalla
3709853456 Display drivers kernel project initial snapshot
This change brings msm display driver including sde,
dp, dsi, rotator, dsi pll and dp pll from base 4.19 kernel
project. It is first source code snapshot from base kernel project.

Change-Id: Iec864c064ce5ea04e170f24414c728684002f284
Signed-off-by: Narendra Muppalla <NarendraM@codeaurora.org>
2019-04-14 22:20:59 -07:00