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kernel: dsi: add new backlight device to avoid conflict

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New added backlight wled driver uses ko, it is not be loaded at
recovery mode. If new added backlight driver uses same backlight type
as panel0-backlight, system will call panel0-backlight when ko is not
loaded, but panel0-backlight is a logical device, cause system dead.

Change-Id: I0c03905c116aae2f42e5ca11edd89035b0cadf33
Signed-off-by: wangyq13 <wangyq13@lenovo.com>
Reviewed-on: https://gerrit.mot.com/1653756
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Reviewed-by: Jing Hu <hujing3@lenovo.com>
Reviewed-by: Huosheng Liao <liaohs@motorola.com>
Submit-Approved: Jira Key
Signed-off-by: tanhua1 <tanhua1@lenovo.com>
Reviewed-on: https://gerrit.mot.com/1949836
Reviewed-by: Xiangpo Zhao <zhaoxp3@motorola.com>
Reviewed-on: https://gerrit.mot.com/2046088
Reviewed-by: Zhihong Kang <kangzh@motorola.com>
This commit is contained in:
wangyq13 2020-07-01 11:53:42 +08:00 • committed by tongkun1
commit 4222fb1b3d
2 changed files with 8 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

11
msm/dsi/dsi_panel.c
View file

@ -857,10 +857,10 @@ int dsi_panel_set_backlight(struct dsi_panel *panel, u32 bl_lvl)
rc = dsi_panel_update_pwm_backlight(panel, bl_lvl);
break;
case DSI_BACKLIGHT_I2C:
if (!(bl->raw_bd))
bl->raw_bd = backlight_device_get_by_type(BACKLIGHT_RAW);
if (!(bl->i2c_bd))
bl->i2c_bd = backlight_device_get_by_type(BACKLIGHT_PLATFORM);
else
rc = backlight_device_set_brightness(bl->raw_bd, bl_lvl);
rc = backlight_device_set_brightness(bl->i2c_bd, bl_lvl);
break;
default:
DSI_ERR("Backlight type(%d) not supported\n", bl->type);
@ -874,6 +874,7 @@ static u32 dsi_panel_get_brightness(struct dsi_backlight_config *bl)
{
u32 cur_bl_level;
struct backlight_device *bd = bl->raw_bd;
struct backlight_device *i2c_bd = bl->i2c_bd;
/* default the brightness level to 50% */
cur_bl_level = bl->bl_max_level >> 1;
@ -885,8 +886,8 @@ static u32 dsi_panel_get_brightness(struct dsi_backlight_config *bl)
cur_bl_level = bd->ops->get_brightness(bd);
break;
case DSI_BACKLIGHT_I2C:
if (bd && bd->ops && bd->ops->get_brightness)
cur_bl_level = bd->ops->get_brightness(bd);
if (i2c_bd && i2c_bd->ops && i2c_bd->ops->get_brightness)
cur_bl_level = i2c_bd->ops->get_brightness(i2c_bd);
break;
case DSI_BACKLIGHT_DCS:
case DSI_BACKLIGHT_EXTERNAL:

3
msm/dsi/dsi_panel.h
View file

@ -172,7 +172,8 @@ struct dsi_backlight_config {
/* WLED params */
struct led_trigger *wled;
struct backlight_device *raw_bd;
struct backlight_device *i2c_bd;
/* DCS params */
bool lp_mode;
};