[v2 0/7] Crystalcove (CRC) PMIC based panel and pwm control

Shobhit Kumar shobhit.kumar at intel.com
Mon Jun 22 03:54:18 PDT 2015

Hi All,
On some of the BYT devices, for DSI panels, the panel enable/disable signals
and backlight control are done using the Crystalcove PMIC. This series provides
support for the same and has been reviewed earlier on -

This series addresses the review comments with one patch from last set already merged as -

Basically following are implemented -

1. GPIO control for panel enable/disable with GFX device as consumer
2. New PWM chip driver added for CRC PMIC based backlight control
3. i915 is modified to use the CRC gpio chip and the CRC PWM chip to do
   backlight control. This is now added in the generic panel backlight
   control infrastructure

All these patches have been tested on AsusT100 and working fine using
/sys/class/backlight/intel_backlight interface.

Patches were also verified on android-x86 tree for AsusT100.


Shobhit Kumar (7):
  gpiolib: Add support for removing registered consumer lookup table
  mfd: intel_soc_pmic_core: Add lookup table for Panel Control as GPIO
  mfd: intel_soc_pmic_crc: Add PWM cell device for Crystalcove PMIC
  mfd: intel_soc_pmic_core: ADD PWM lookup table for CRC PMIC based PWM
  pwm: crc: Add Crystalcove (CRC) PWM driver
  drm/i915: Use the CRC gpio for panel enable/disable
  drm/i915: Backlight control using CRC PMIC based PWM driver

 drivers/gpio/gpiolib.c             |  13 ++++
 drivers/gpu/drm/i915/intel_bios.h  |   7 ++
 drivers/gpu/drm/i915/intel_drv.h   |   4 +
 drivers/gpu/drm/i915/intel_dsi.c   |  38 ++++++++-
 drivers/gpu/drm/i915/intel_dsi.h   |   3 +
 drivers/gpu/drm/i915/intel_panel.c |  95 +++++++++++++++++++++--
 drivers/mfd/intel_soc_pmic_core.c  |  29 +++++++
 drivers/mfd/intel_soc_pmic_crc.c   |   3 +
 drivers/pwm/Kconfig                |   7 ++
 drivers/pwm/Makefile               |   1 +
 drivers/pwm/pwm-crc.c              | 155 +++++++++++++++++++++++++++++++++++++
 include/linux/gpio/machine.h       |   1 +
 12 files changed, 349 insertions(+), 7 deletions(-)
 create mode 100644 drivers/pwm/pwm-crc.c


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