samsung-sm8650/android_kernel_samsung_sm8650-modules
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disp: msm: dsi: add a new PWM pinctrl configure

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The default PWM gpio pin mode was not right for PWM backlight
control. If needs to use PWM backlight, must config the
gpio pinctrl.

Change-Id: I5fd6b947d379b53ef4c358be1b935a2ad4970f99
Signed-off-by: Yuan Zhao <yzhao@codeaurora.org>
This commit is contained in:
Yuan Zhao
2020-07-15 17:03:39 +08:00
committed by Gerrit - the friendly Code Review server
parent b41ee8cf11
commit b54107cfa3
2 changed files with 17 additions and 0 deletions
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16
msm/dsi/dsi_panel.c
View File

@@ -477,6 +477,14 @@ static int dsi_panel_pinctrl_init(struct dsi_panel *panel)
goto error; goto error;
} }
panel->pinctrl.pwm_pin =
pinctrl_lookup_state(panel->pinctrl.pinctrl, "pwm_pin");
if (IS_ERR_OR_NULL(panel->pinctrl.pwm_pin)) {
panel->pinctrl.pwm_pin = NULL;
DSI_DEBUG("failed to get pinctrl pwm_pin");
}
error: error:
return rc; return rc;
} }
@@ -649,6 +657,14 @@ static int dsi_panel_pwm_register(struct dsi_panel *panel)
return rc; return rc;
} }
if (panel->pinctrl.pwm_pin) {
rc = pinctrl_select_state(panel->pinctrl.pinctrl,
panel->pinctrl.pwm_pin);
if (rc)
DSI_ERR("[%s] failed to set pwm pinctrl, rc=%d\n",
panel->name, rc);
}
return 0; return 0;
} }

1
msm/dsi/dsi_panel.h
View File

@@ -97,6 +97,7 @@ struct dsi_pinctrl_info {
struct pinctrl *pinctrl; struct pinctrl *pinctrl;
struct pinctrl_state *active; struct pinctrl_state *active;
struct pinctrl_state *suspend; struct pinctrl_state *suspend;
struct pinctrl_state *pwm_pin;
}; };
struct dsi_panel_phy_props { struct dsi_panel_phy_props {