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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-26 09:34:29 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-26 09:34:29 -0800 |
| commit | 3eb05225ee8efb81fe50558f5f9d94e7477ade8f (patch) | |
| tree | 40692236718c808455f1fcdfbc1c6de6a274eb36 /drivers/pwm/core.c | |
| parent | ed5dc2372dba46e0ecd08791b1a0399d313e5cff (diff) | |
| parent | 30f786170352b8264bc7b61c2482713e54accec8 (diff) | |
Merge tag 'for-3.9-rc1' of git://gitorious.org/linux-pwm/linux-pwm
Pull PWM changes from Thierry Reding:
"A new driver has been added to support the PWM mode of the timer
counter blocks found on Atmel AT91 SoCs. The VT8500 driver now
supports changing the PWM signal polarity and the TI drivers (EHRPWM
and ECAP) gained suspend and resume functionality.
User drivers can now query the core for whether access to a PWM device
will sleep (if the PWM chip is on a slow bus such as I2C or SPI).
The pwm-backlight driver now handles the backlight BL_CORE_FBBLANK
state in addition to the FB layer's blanking states.
To round things off, a few fixes and cleanups are also included"
* tag 'for-3.9-rc1' of git://gitorious.org/linux-pwm/linux-pwm:
pwm: twl: Use to_twl() instead of container_of()
pwm: tegra: assume CONFIG_OF
pwm_backlight: Validate dft_brightness in main probe function
pwm: Export pwm_{set,get}_chip_data()
pwm: Make Kconfig entries more consistent
pwm: Add can_sleep property to drivers
pwm: Add pwm_can_sleep() as exported API to users
pwm-backlight: handle BL_CORE_FBBLANK state
pwm: pwm-tiecap: Low power sleep support
pwm: pwm-tiehrpwm: Low power sleep support
pwm: pwm-tiehrpwm: Update the clock handling of pwm-tiehrpwm driver
pwm: vt8500: Add polarity support
pwm: vt8500: Register write busy test performed incorrectly
pwm: atmel: add Timer Counter Block PWM driver
Diffstat (limited to 'drivers/pwm/core.c')
| -rw-r--r-- | drivers/pwm/core.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c index 4a13da48fefe..32221cb0cbe7 100644 --- a/drivers/pwm/core.c +++ b/drivers/pwm/core.c @@ -211,6 +211,7 @@ int pwm_set_chip_data(struct pwm_device *pwm, void *data) return 0; } +EXPORT_SYMBOL_GPL(pwm_set_chip_data); /** * pwm_get_chip_data() - get private chip data for a PWM @@ -220,6 +221,7 @@ void *pwm_get_chip_data(struct pwm_device *pwm) { return pwm ? pwm->chip_data : NULL; } +EXPORT_SYMBOL_GPL(pwm_get_chip_data); /** * pwmchip_add() - register a new PWM chip @@ -763,6 +765,18 @@ void devm_pwm_put(struct device *dev, struct pwm_device *pwm) } EXPORT_SYMBOL_GPL(devm_pwm_put); +/** + * pwm_can_sleep() - report whether PWM access will sleep + * @pwm: PWM device + * + * It returns true if accessing the PWM can sleep, false otherwise. + */ +bool pwm_can_sleep(struct pwm_device *pwm) +{ + return pwm->chip->can_sleep; +} +EXPORT_SYMBOL_GPL(pwm_can_sleep); + #ifdef CONFIG_DEBUG_FS static void pwm_dbg_show(struct pwm_chip *chip, struct seq_file *s) { |