diff options
| author | Benet Clark <benetc@codeaurora.org> | 2014-10-03 12:53:32 -0700 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-23 20:34:49 -0700 |
| commit | fedf3e02ffc2265f11857608c212ff885d79c003 (patch) | |
| tree | 69a317d950be66d78f80b6eb5147ef019e931ae0 | |
| parent | 8193262f44db65b8251316827f536b00eebf105b (diff) | |
msm: mdss: Set backlight pwm level to 0 before disabling during BLANK
Currently, when BLANK is called to turn off the panel during suspend, we
set the backlight to level 0. The backlight pwm driver interprets this
as requiring pwm_disable() only. However, in order to prevent any
garbage data from being displayed on the panel during resume, we should
set the pwm level to 0 before disabling the pwm backlight node.
Change-Id: Ifc12c49cbfcac76a5ca07e8c5e16b0fd023e1eeb
CRs-Fixed: 711782
Signed-off-by: Benet Clark <benetc@codeaurora.org>
| -rw-r--r-- | drivers/video/fbdev/msm/mdss_dsi_panel.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/video/fbdev/msm/mdss_dsi_panel.c b/drivers/video/fbdev/msm/mdss_dsi_panel.c index 6b46eef793af..8e7707bb13b6 100644 --- a/drivers/video/fbdev/msm/mdss_dsi_panel.c +++ b/drivers/video/fbdev/msm/mdss_dsi_panel.c @@ -61,8 +61,14 @@ static void mdss_dsi_panel_bklt_pwm(struct mdss_dsi_ctrl_pdata *ctrl, int level) } if (level == 0) { - if (ctrl->pwm_enabled) + if (ctrl->pwm_enabled) { + ret = pwm_config_us(ctrl->pwm_bl, level, + ctrl->pwm_period); + if (ret) + pr_err("%s: pwm_config_us() failed err=%d.\n", + __func__, ret); pwm_disable(ctrl->pwm_bl); + } ctrl->pwm_enabled = 0; return; } |