[PATCH 0/8] Crystalcove (CRC) PMIC based panel and pwm control

Shobhit Kumar
2015-04-29T13:59:57Z

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 -
http://lists.freedesktop.org/archives/intel-gfx/2015-March/061908.html

This series addresses the review comments with two of the patches already merged
in linux-next as -

http://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/commit/?id=e189ca56d91bbf1d3fe2f88ab6858bf919d42adf
http://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/commit/?id=c264f1110d27185f8531602f5fce400a6bbce946

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 are also verified on android-x86 tree for AsusT100.

Regards
Shobhit

Shobhit Kumar (8):
drivers/gpio/gpiolib: Add support for removing registered consumer
lookup table
drivers/pwm/core: Add support to remove registered consumer lookup
tables
drivers/mfd: Add lookup table for Panel Control as GPIO signal
drivers/mfd: Add PWM cell device for Crystalcove PMIC
drivers/mfd: ADD PWM lookup table for CRC PMIC based PWM
drivers/pwm: 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_drv.h | 5 ++
drivers/gpu/drm/i915/intel_dsi.c | 38 ++++++++-
drivers/gpu/drm/i915/intel_dsi.h | 6 ++
drivers/gpu/drm/i915/intel_panel.c | 92 ++++++++++++++++++--
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/core.c | 17 ++++
drivers/pwm/pwm-crc.c | 171 +++++++++++++++++++++++++++++++++++++
include/linux/gpio/machine.h | 1 +
include/linux/pwm.h | 5 ++
13 files changed, 381 insertions(+), 7 deletions(-)
create mode 100644 drivers/pwm/pwm-crc.c

--
2.1.0

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