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backlight: lp855x: move backlight mode platform data

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The brightness of LP855x devices is controlled by I2C register or PWM
input .  This mode was selected through the platform data, but it can be
chosen by the driver internally without platform data configuration.

How to decide the control mode:
  If the PWM period has specific value, the mode is PWM input.
  On the other hand, the mode is register-based.
  This mode selection is done on the _probe().

Move 'mode' from a header file to the driver private data structure,
'lp855 x'.  And correlated code was replaced.

Signed-off-by: Milo(Woogyom) Kim <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Kim, Milo 2013-04-29 16:18:03 -07:00 • committed by Linus Torvalds
commit 0b81857339
3 changed files with 15 additions and 16 deletions
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3
Documentation/backlight/lp855x-driver.txt
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@ -32,7 +32,6 @@ Platform data for lp855x
For supporting platform specific data, the lp855x platform data can be used.
* name : Backlight driver name. If it is not defined, default name is set.
* mode : Brightness control mode. PWM or register based.
* device_control : Value of DEVICE CONTROL register.
* initial_brightness : Initial value of backlight brightness.
* period_ns : Platform specific PWM period value. unit is nano.
@ -54,7 +53,6 @@ static struct lp855x_rom_data lp8552_eeprom_arr[] = {
static struct lp855x_platform_data lp8552_pdata = {
.name = "lcd-bl",
.mode = REGISTER_BASED,
.device_control = I2C_CONFIG(LP8552),
.initial_brightness = INITIAL_BRT,
.load_new_rom_data = 1,
@ -65,7 +63,6 @@ static struct lp855x_platform_data lp8552_pdata = {
example 2) lp8556 platform data : pwm input mode with default rom data
static struct lp855x_platform_data lp8556_pdata = {
.mode = PWM_BASED,
.device_control = PWM_CONFIG(LP8556),
.initial_brightness = INITIAL_BRT,
.period_ns = 1000000,