From d56a289be2ce01d1aa426a6cf45dede14a8db41e Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Sat, 3 Nov 2012 12:05:52 -0700 Subject: [PATCH] Input: pwm-beeper - add devicetree probing support A very simple binding, the only property is the phandle to the PWM. Signed-off-by: Sascha Hauer Reviewed-by: Thierry Reding Signed-off-by: Dmitry Torokhov --- Documentation/devicetree/bindings/input/pwm-beeper.txt | 7 +++++++ drivers/input/misc/Kconfig | 2 +- drivers/input/misc/pwm-beeper.c | 14 +++++++++++++- 3 files changed, 21 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..be332ae --- /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 c835357..0f959d7 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -441,7 +441,7 @@ 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..502544c 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_dbg(&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 +175,13 @@ static SIMPLE_DEV_PM_OPS(pwm_beeper_pm_ops, #define PWM_BEEPER_PM_OPS NULL #endif +#ifdef CONFIG_OF +static const struct of_device_id pwm_beeper_match[] = { + { .compatible = "pwm-beeper", }, + { }, +}; +#endif + static struct platform_driver pwm_beeper_driver = { .probe = pwm_beeper_probe, .remove = __devexit_p(pwm_beeper_remove), @@ -178,6 +189,7 @@ static struct platform_driver pwm_beeper_driver = { .name = "pwm-beeper", .owner = THIS_MODULE, .pm = PWM_BEEPER_PM_OPS, + .of_match_table = of_match_ptr(pwm_beeper_match), }, }; module_platform_driver(pwm_beeper_driver); -- 2.7.4