Allow client driver to use of_pwm_request() 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.ujfal...@ti.com>
---
drivers/pwm/core.c | 2 +-
include/linux/pwm.h | 7 +++++++
2 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index 903138b..3a7ebcc 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -486,7 +486,7 @@ static struct pwm_chip *of_node_to_pwmchip(struct
device_node *np)
* 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,
+struct pwm_device *of_pwm_request(struct device_node *np,
const char *con_id)
{
struct pwm_device *pwm = NULL;
diff --git a/include/linux/pwm.h b/include/linux/pwm.h
index 6d661f3..d70ffe3 100644
--- a/include/linux/pwm.h
+++ b/include/linux/pwm.h
@@ -175,6 +175,7 @@ struct pwm_device *of_pwm_xlate_with_flags(struct pwm_chip
*pc,
const struct of_phandle_args *args);
struct pwm_device *pwm_get(struct device *dev, const char *consumer);
+struct pwm_device *of_pwm_request(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 *consumer);
@@ -213,6 +214,12 @@ static inline struct pwm_device *pwm_get(struct device
*dev,
return ERR_PTR(-ENODEV);
}
+static inline struct pwm_device *of_pwm_request(struct device_node *np,
+ const char *con_id)
+{
+ return ERR_PTR(-ENODEV);
+}
+
static inline void pwm_put(struct pwm_device *pwm)
{
}
--
1.8.0
--
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