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wled: enable cabc before set brightness when adjust bl

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As https://gerrit.mot.com/#/c/1743071/ do, if enable cabc after setting
brightness when adjust brightness, may cause backlight flicker. So move
cabc enable before setting brightness when adjust brightness.
But still enable cabc after setting brihtness if phone screen on to
avoid peak current.

Change-Id: I625f6cdc8cd6c30e049c13994850932b9653dde9
Reviewed-on: https://gerrit.mot.com/1782873
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Reviewed-by: Yeqing Wang <wangyq13@motorola.com>
Reviewed-by: Shanshan Dai <daiss1@motorola.com>
Reviewed-by: Huosheng Liao <liaohs@motorola.com>
Submit-Approved: Jira Key
This commit is contained in:
wangyq13 2020-10-23 10:09:35 +08:00 • committed by Xiaojun Ji
commit 8df86193da
1 changed files with 29 additions and 14 deletions
Download patch file Download diff file Expand all files Collapse all files

47
drivers/video/backlight/qcom-spmi-wled.c
View file

@ -566,17 +566,24 @@ static int wled_update_status(struct backlight_device *bl)
brightness = 0;
mutex_lock(&wled->lock);
if (wled->low_bl_force_cabc_disable && brightness <= wled->low_bl_cfg.low_bl_threshold) {
brightness = brightness * wled->low_bl_cfg.low_bl_remap_percent/100;
if (!wled->cabc_disabled) {
wled->cabc_config(wled, false);
wled->cabc_disabled = true;
pr_info("low brightness(%d), disable cabc\n", brightness);
}
}
if (brightness) {
if (wled->low_bl_force_cabc_disable && wled->brightness) {
if (brightness <= wled->low_bl_cfg.low_bl_threshold) {
brightness = brightness * wled->low_bl_cfg.low_bl_remap_percent/100;
if (!wled->cabc_disabled) {
wled->cabc_config(wled, false);
wled->cabc_disabled = true;
pr_info("under low brightness(%d), will disable cabc\n", brightness);
}
}
else if ((wled->brightness < wled->low_bl_cfg.low_bl_threshold) && (wled->cabc_disabled)) {
wled->cabc_disabled = false;
wled->cabc_config(wled, true);
pr_info("exit low brightness(%d), will enable cabc\n", brightness);
}
}
if (wled->bl_step_up_enable) {
rc = wled_set_brightness_step(wled, brightness);
if (rc < 0) {
@ -590,12 +597,15 @@ static int wled_update_status(struct backlight_device *bl)
goto unlock_mutex;
}
if (wled->low_bl_force_cabc_disable && brightness > wled->low_bl_cfg.low_bl_threshold
&& wled->brightness <= wled->low_bl_cfg.low_bl_threshold && wled->cabc_disabled) {
msleep(wled->low_bl_cfg.low_bl_delay_ms);
wled->cabc_disabled = false;
wled->cabc_config(wled, true);
pr_info("enable wled cabc\n");
if (wled->cabc_disabled && wled->low_bl_force_cabc_disable && !wled->brightness) {
if (brightness <= wled->low_bl_cfg.low_bl_threshold)
pr_info("keep cabc disabled\n");
else {
msleep(wled->low_bl_cfg.low_bl_delay_ms);
wled->cabc_disabled = false;
wled->cabc_config(wled, true);
pr_info("enable wled cabc\n");
}
}
if (is_wled5(wled)) {
@ -645,6 +655,11 @@ static int wled_update_status(struct backlight_device *bl)
}
}
if (!wled->cabc_disabled && wled->low_bl_force_cabc_disable) {
wled->cabc_config(wled, false);
wled->cabc_disabled = true;
pr_info("disable wled cabc\n");
}
rc = wled_module_enable(wled, brightness);
if (rc < 0) {
pr_err("wled disable failed rc:%d\n", rc);