Enable LCD display on snow

This series adds a driver for TPS65090 and plumbs it in to get the LCD working correctly on snow.

The display driver is already present, but needs information about the display to be provided in the device tree.

The backlight also needs to be enabled - it is controlled by a FET on the TPS65090. Note that the TPS65090 is controlled by the device tree so will only be present if the board's device tree file specifies it. At present this is only the case for snow, but other exynos5 boards will use it (e.g. pit).

Note: the TPS65090 driver was sent to the list around the middle of last year but was never applied.

Changes in v3:
- Add new patch to correct EC interrupt GPIO
- Rebase on samsung/master
- Remove extra blank lines in two places
- Use !! style instead ternary operator
- Change the ptn3460 comment to indicate a TODO for device tree GPIOs
- Rename MAX_TRIES to lower case
- Rename onoff to on
- Use generic GPIO API
- Drop patch "exynos: dts: Disable cros_ec interrupts due to broken GPIOs"

Changes in v2:
- Add new patch to drop smdk5250.c file
- Add new patch to rename CHARGER_EN/DISABLE
- Removed non-device-tree operation
- Use errno.h for error return codes everywhere
- Plumb into pmic charging framework
- Fix style nit
- Use correct license header
- Use new Linux device tree bindings
- Add partial battery charging support
- Update patch name to exynos5-dt instead of smdk5250
- Move code to exynos5-dt.c
- Fix comment style
- Add #ifdef around tps65090 code
- Add a device tree node for the snow EDP bridge chip
- Only set up the EDP bridge for snow
- Add a device tree compatibility string for the EDP bridge
- Check for EDP failure and print an error in that case
- Return immediately in exynos_backlight_on() if needed
- Rebase to samsung/master

Aaron Durbin (3):
exynos5: Enable tps65090 on exynos5-dt
power: Explicitly select pmic device's bus
exynos5: support tps65090 pmic

Simon Glass (8):
exynos: dts: Correct EC interrupt GPIO
exynos: Drop old smdk5250.c file
power: Rename CONFIG_PMIC_... to CONFIG_POWER_...
power: Add PMIC_ prefix to CHARGER_EN/DISABLE
exynos: Enable PSHOLD in SPL
exynos: dts: Enable LCD for snow
exynos: Enable the LCD backlight for snow
initcall: Improve debugging support

Tom Wai-Hong Tam (1):
power: Add support for TPS65090 PMU chip.

 arch/arm/cpu/armv7/exynos/lowlevel_init.c       |   2 +
 arch/arm/dts/exynos5250-snow.dts                |  61 +++-
 board/samsung/smdk5250/Makefile                 |   4 -
 board/samsung/smdk5250/exynos5-dt.c             | 238 +++++++++++++++-
 board/samsung/smdk5250/smdk5250.c               | 363 ------------------------
 doc/device-tree-bindings/power/tps65090.txt     |  17 ++
 doc/device-tree-bindings/regulator/tps65090.txt | 122 ++++++++
 drivers/power/battery/bat_trats.c               |   4 +-
 drivers/power/battery/bat_trats2.c              |   2 +-
 drivers/power/mfd/pmic_max77693.c               |   2 +-
 drivers/power/pmic/Makefile                     |   1 +
 drivers/power/pmic/pmic_max8997.c               |   2 +-
 drivers/power/pmic/pmic_tps65090.c              | 310 ++++++++++++++++++++
 drivers/power/power_fsl.c                       |   6 +-
 drivers/power/power_i2c.c                       |   4 +
 include/configs/arndale.h                       |   4 +-
 include/configs/exynos5-dt.h                    |   1 +
 include/configs/exynos5250-dt.h                 |   2 +-
 include/configs/mx25pdk.h                       |   2 +-
 include/configs/mx35pdk.h                       |   2 +-
 include/configs/mx53evk.h                       |   2 +-
 include/configs/mx53loco.h                      |   2 +-
 include/configs/woodburn_common.h               |   2 +-
 include/fdtdec.h                                |   2 +
 include/initcall.h                              |   2 +-
 include/power/max77693_pmic.h                   |   2 -
 include/power/max8997_pmic.h                    |   1 -
 include/power/pmic.h                            |   5 +
 include/power/tps65090_pmic.h                   |  73 +++++

 lib/fdtdec.c                                    |   2 +
 lib/initcall.c                                  |  17 +-
 31 files changed, 864 insertions(+), 395 deletions(-)
 delete mode 100644 board/samsung/smdk5250/smdk5250.c
 create mode 100644 doc/device-tree-bindings/power/tps65090.txt
 create mode 100644 doc/device-tree-bindings/regulator/tps65090.txt
 create mode 100644 drivers/power/pmic/pmic_tps65090.c
 create mode 100644 include/power/tps65090_pmic.h