[PATCH v4 0/3] pwm: Drivers for twl4030/6030 PWMs and LEDs

[Peter Ujfalusi <peter.ujfalusi@ti.com>]

Hello,

Changes since v3:
- pwm-twl-led driver's comment fix patch squashed to the original patch
- Documentation for the DT bindings of the PWM drivers
Comments from Thierry Reding addressed:
- pwm-twl6030 has been removed in the last patch
- macro for twl_pwm_chip/twl_pwmled_chip lookup
- locking for read-modify-write sequences
- separate pwm_ops strictures for twl4030 and twl6030 class
- _devexit_P() removed
- Do not select HAVE_PWM in Kconfig file since it is going away AFAIK:
  https://patchwork.kernel.org/patch/1544851/
- Remaining (smaller) comments from Thierry also has been addressed.

Changes since v2:
- New PWM cycle calculation for twl-pwm driver and twl4030's pwm-twl-led with
  comment to document the expected behaviour.

Changes cince v1:
- The turn on/off sequence has been corrected for twl4030 PWMs as suggested by
  Grazvydas Ignotas
- Comment section added to the new drivers to describe what they are controlling

The series has been tested (with additional, pending patches):
Zoom2 for twl4030 PWM0 (keypad light), PWM1 (LCD backlight)
BeagleBoard for twl4030 LEDB (PWMB - pmu_stat led)
OMAP4 Blaze (SDP4430) for twl6030 PWM1 (keypad light), PWM2 (LCD backlight) and
LED (charging indication led).

Intro mail from v1:

The currently available pwm-twl6030.c driver only supports TWL6030's Charging
indication LED.
Remove this driver and add two new ones which implements support for all PWM
driven outputs:
pwm-twl driver supports twl4030 (PWM 0/1) and twl6030 (PWM 1/2) instances
pwm-twl-led driver supports twl4030 (PWM driven LED A/B ports) and twl6030's
Charging indication LED (PWM driven).

Regards,
Peter
---
Peter Ujfalusi (3):
  pwm: New driver to support PWMs on TWL4030/6030 series of PMICs
  pwm: New driver to support PWM driven LEDs on TWL4030/6030 series of
    PMICs
  pwm: Remove pwm-twl6030 driver

 .../devicetree/bindings/pwm/ti,twl-pwm.txt         |  17 +
 .../devicetree/bindings/pwm/ti,twl-pwmled.txt      |  17 +
 drivers/pwm/Kconfig                                |  17 +-
 drivers/pwm/Makefile                               |   3 +-
 drivers/pwm/pwm-twl-led.c                          | 342 ++++++++++++++++++++
 drivers/pwm/pwm-twl.c                              | 357 +++++++++++++++++++++
 drivers/pwm/pwm-twl6030.c                          | 184 -----------
 7 files changed, 748 insertions(+), 189 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/pwm/ti,twl-pwm.txt
 create mode 100644 Documentation/devicetree/bindings/pwm/ti,twl-pwmled.txt
 create mode 100644 drivers/pwm/pwm-twl-led.c
 create mode 100644 drivers/pwm/pwm-twl.c
 delete mode 100644 drivers/pwm/pwm-twl6030.c

-- 
1.8.0