A very simple binding, the only property is the phandle to the PWM.
Signed-off-by: Sascha Hauer <[email protected]>
---
changes since v1:
- first use new pwm API, if that fails, use legacy API
- add 'depends on PWM'
Documentation/devicetree/bindings/input/pwm-beeper.txt | 7 +++++++
drivers/input/misc/Kconfig | 2 +-
drivers/input/misc/pwm-beeper.c | 12 +++++++++++-
3 files changed, 19 insertions(+), 2 deletions(-)
create mode 100644 Documentation/devicetree/bindings/input/pwm-beeper.txt
diff --git a/Documentation/devicetree/bindings/input/pwm-beeper.txt
b/Documentation/devicetree/bindings/input/pwm-beeper.txt
new file mode 100644
index 0000000..7388b82
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/pwm-beeper.txt
@@ -0,0 +1,7 @@
+* PWM beeper device tree bindings
+
+Registers a PWM device as beeper.
+
+Required properties:
+- compatible: should be "pwm-beeper"
+- pwms: phandle to the physical pwm device
diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index 7c0f1ec..ff5dbd6 100644
--- a/drivers/input/misc/Kconfig
+++ b/drivers/input/misc/Kconfig
@@ -444,7 +444,7 @@ config INPUT_PCF8574
config INPUT_PWM_BEEPER
tristate "PWM beeper support"
- depends on HAVE_PWM
+ depends on HAVE_PWM || PWM
help
Say Y here to get support for PWM based beeper devices.
diff --git a/drivers/input/misc/pwm-beeper.c b/drivers/input/misc/pwm-beeper.c
index fc84c8a..dfb3c50 100644
--- a/drivers/input/misc/pwm-beeper.c
+++ b/drivers/input/misc/pwm-beeper.c
@@ -75,7 +75,11 @@ static int __devinit pwm_beeper_probe(struct platform_device
*pdev)
if (!beeper)
return -ENOMEM;
- beeper->pwm = pwm_request(pwm_id, "pwm beeper");
+ beeper->pwm = pwm_get(&pdev->dev, NULL);
+ if (IS_ERR(beeper->pwm)) {
+ dev_err(&pdev->dev, "unable to request PWM, trying legacy
API\n");
+ beeper->pwm = pwm_request(pwm_id, "pwm beeper");
+ }
if (IS_ERR(beeper->pwm)) {
error = PTR_ERR(beeper->pwm);
@@ -171,6 +175,11 @@ static SIMPLE_DEV_PM_OPS(pwm_beeper_pm_ops,
#define PWM_BEEPER_PM_OPS NULL
#endif
+static const struct of_device_id pwm_beeper_match[] = {
+ { .compatible = "pwm-beeper", },
+ { },
+};
+
static struct platform_driver pwm_beeper_driver = {
.probe = pwm_beeper_probe,
.remove = __devexit_p(pwm_beeper_remove),
@@ -178,6 +187,7 @@ static struct platform_driver pwm_beeper_driver = {
.name = "pwm-beeper",
.owner = THIS_MODULE,
.pm = PWM_BEEPER_PM_OPS,
+ .of_match_table = pwm_beeper_match,
},
};
module_platform_driver(pwm_beeper_driver);
--
1.7.10.4
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