forge/linux-pinenote
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

pwm: Changes for v3.9-rc1

Browse source 
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.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.19 (GNU/Linux)
 
 iQIcBAABAgAGBQJRKxfbAAoJEN0jrNd/PrOhcwEP/0plVf30QDMhcan1GR3l+jmK
 3Q/cCNIWEZ75mRu+FtVYKUOduxkCOHR6LM4C2ScGnnpsS/X5oitc45FrblIwQaEI
 UeWVxDqI+pEp+rCdYVCND4lih60FJU0Cct0zZL2db4D4idF+8FRChhzwzSXhajnj
 ZZqz782Y2ig3YTLHtVGT1pp61DKxdu1Gz4U+fxo4G1/fnkquCYDzbCQovcmPSnnF
 gYB8hfxgT9JIt2cHrK6eKCHBF/4GToU+x5zDV2Ub15C2K/UQ+qgw82yl8MNd/ZS5
 rFA06iW3icnJRRc8u6hu9WVjNVNTBrUqUlFhctNB01d5jF4R6uR6aEvovT9xe8NW
 Wa5v5WrjnL6SWpZVwb/3kwwJmkeU9zKESQt5KUw3VKnT8yr2BfxcH1gJIiuW6wK7
 uYqknAvt2rwMEGzaKZJmQH682wNMxpJirs8hG9VjJc/v7AOnk6586HbRupAq8wWZ
 qK4n1Fto9RCg+b6e/hDId7+mN1GEcA5B8BOotPQ6ud+cinDZBKSbCSHhQG2LQ++F
 m81BbL82H2R2ICRoYNA74/bKq5OVOFFqHLHg5bUrG7ikdNbYOTK/4dF9qSS7DnT3
 Bi6WnKpOtfpWbHBnDunP2vBFo3f+gXmbLJdgarxk7mneV8wp0GY6TYI1awWn0hI9
 82JP3yiK5kW2JZv92o0H
 =Fcxi
 -----END PGP SIGNATURE-----

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
This commit is contained in:
Linus Torvalds 2013-02-26 09:34:29 -08:00
commit 3eb05225ee
14 changed files with 741 additions and 42 deletions
Download patch file Download diff file Expand all files Collapse all files

10
include/linux/pwm.h
View file

@ -146,6 +146,8 @@ struct pwm_ops {
* @base: number of first PWM controlled by this chip
* @npwm: number of PWMs controlled by this chip
* @pwms: array of PWM devices allocated by the framework
* @can_sleep: must be true if the .config(), .enable() or .disable()
* operations may sleep
*/
struct pwm_chip {
struct device *dev;
@ -159,6 +161,7 @@ struct pwm_chip {
struct pwm_device * (*of_xlate)(struct pwm_chip *pc,
const struct of_phandle_args *args);
unsigned int of_pwm_n_cells;
bool can_sleep;
};
#if IS_ENABLED(CONFIG_PWM)
@ -182,6 +185,8 @@ struct pwm_device *devm_pwm_get(struct device *dev, const char *con_id);
struct pwm_device *devm_of_pwm_get(struct device *dev, struct device_node *np,
const char *con_id);
void devm_pwm_put(struct device *dev, struct pwm_device *pwm);
bool pwm_can_sleep(struct pwm_device *pwm);
#else
static inline int pwm_set_chip_data(struct pwm_device *pwm, void *data)
{
@ -242,6 +247,11 @@ static inline struct pwm_device *devm_of_pwm_get(struct device *dev,
static inline void devm_pwm_put(struct device *dev, struct pwm_device *pwm)
{
}
static inline bool pwm_can_sleep(struct pwm_device *pwm)
{
return false;
}
#endif
struct pwm_lookup {