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backlight: lp855x_bl: support new LP8557 device

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LP8557 is one of LP855x family device, but it has different register map
and initialization process.  To support this device, device specific
configuration is done through the lp855x_device_config structure.

Few register definitions are fixed for better readability.
  BRIGHTNESS_CTRL -> LP855X_BRIGHTNESS_CTRL
  DEVICE_CTRL     -> LP855X_DEVICE_CTRL
  EEPROM_START    -> LP855X_EEPROM_START
  EEPROM_END      -> LP855X_EEPROM_END
  EPROM_START     -> LP8556_EPROM_START
  EPROM_END       -> LP8556_EPROM_END

And LP8557 register definitions are added.  New register function,
lp855x_update_bit() is added.

Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Kim, Milo
2013-02-21 16:44:06 -08:00
committed by Linus Torvalds
parent 68853bc2b3
commit 26e8ccc223
4 changed files with 94 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
include/linux/platform_data/lp855x.h
View File

@@ -49,12 +49,24 @@
#define LP8556_FAST_CONFIG BIT(7) /* use it if EPROMs should be maintained
when exiting the low power mode */
/* CONFIG register - LP8557 */
#define LP8557_PWM_STANDBY BIT(7)
#define LP8557_PWM_FILTER BIT(6)
#define LP8557_RELOAD_EPROM BIT(3) /* use it if EPROMs should be reset
when the backlight turns on */
#define LP8557_OFF_OPENLEDS BIT(2)
#define LP8557_PWM_CONFIG LP8557_PWM_ONLY
#define LP8557_I2C_CONFIG LP8557_I2C_ONLY
#define LP8557_COMB1_CONFIG LP8557_COMBINED1
#define LP8557_COMB2_CONFIG LP8557_COMBINED2
enum lp855x_chip_id {
LP8550,
LP8551,
LP8552,
LP8553,
LP8556,
LP8557,
};
enum lp855x_brightness_ctrl_mode {
@@ -89,6 +101,13 @@ enum lp8556_brightness_source {
LP8556_COMBINED2, /* pwm + i2c after the shaper block */
};
enum lp8557_brightness_source {
LP8557_PWM_ONLY,
LP8557_I2C_ONLY,
LP8557_COMBINED1, /* pwm + i2c after the shaper block */
LP8557_COMBINED2, /* pwm + i2c before the shaper block */
};
struct lp855x_rom_data {
u8 addr;
u8 val;