pwm: core: Rename of_pwm_request() to of_pwm_get() and export it
Allow client driver to use of_pwm_get() to get the PWM they need. This
is needed for drivers which handle more than one PWM separately, like
leds-pwm driver, which have:
pwmleds {
compatible = "pwm-leds";
kpad {
label = "omap4::keypad";
pwms = <&twl_pwm 0 7812500>;
max-brightness = <127>;
};
charging {
label = "omap4:green:chrg";
pwms = <&twl_pwmled 0 7812500>;
max-brightness = <255>;
};
};
in the dts files.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index 903138b..3cb741d 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -471,7 +471,7 @@
}
/**
- * of_pwm_request() - request a PWM via the PWM framework
+ * of_pwm_get() - request a PWM via the PWM framework
* @np: device node to get the PWM from
* @con_id: consumer name
*
@@ -486,8 +486,7 @@
* becomes mandatory for devices that look up the PWM device via the con_id
* parameter.
*/
-static struct pwm_device *of_pwm_request(struct device_node *np,
- const char *con_id)
+struct pwm_device *of_pwm_get(struct device_node *np, const char *con_id)
{
struct pwm_device *pwm = NULL;
struct of_phandle_args args;
@@ -545,6 +544,7 @@
return pwm;
}
+EXPORT_SYMBOL_GPL(of_pwm_get);
/**
* pwm_add_table() - register PWM device consumers
@@ -587,7 +587,7 @@
/* look up via DT first */
if (IS_ENABLED(CONFIG_OF) && dev && dev->of_node)
- return of_pwm_request(dev->of_node, con_id);
+ return of_pwm_get(dev->of_node, con_id);
/*
* We look up the provider in the static table typically provided by
diff --git a/include/linux/pwm.h b/include/linux/pwm.h
index cc908a5..76a1959 100644
--- a/include/linux/pwm.h
+++ b/include/linux/pwm.h
@@ -175,6 +175,7 @@
const struct of_phandle_args *args);
struct pwm_device *pwm_get(struct device *dev, const char *con_id);
+struct pwm_device *of_pwm_get(struct device_node *np, const char *con_id);
void pwm_put(struct pwm_device *pwm);
struct pwm_device *devm_pwm_get(struct device *dev, const char *con_id);
@@ -213,6 +214,12 @@
return ERR_PTR(-ENODEV);
}
+static inline struct pwm_device *of_pwm_get(struct device_node *np,
+ const char *con_id)
+{
+ return ERR_PTR(-ENODEV);
+}
+
static inline void pwm_put(struct pwm_device *pwm)
{
}