Re: [PATCH v2 2/2] backlight: add new lp8788 backlight driver

[Andrew Morton]

On Fri, 21 Dec 2012 07:55:23 +0000
"Kim, Milo" <Milo.Kim@xxxxxx> wrote:

> TI LP8788 PMU supports regulators, battery charger, RTC, ADC, backlight driver
> and current sinks.
> This patch enables LP8788 backlight module.
> 
> (Brightness mode)
> The brightness is controlled by PWM input or I2C register.
> All modes are supported in the driver.
> 
> (Platform data)
> Configurable data can be defined in the platform side.
>  name                  : backlight driver name. (default: "lcd-backlight")
>  initial_brightness    : initial value of backlight brightness
>  bl_mode               : brightness control by PWM or lp8788 register
>  dim_mode              : dimming mode selection
>  full_scale            : full scale current setting
>  rise_time             : brightness ramp up step time
>  fall_time             : brightness ramp down step time
>  pwm_pol               : PWM polarity setting when bl_mode is PWM based
>  period_ns             : platform specific PWM period value. unit is nano.

There's also

DEVICE_ATTR(bl_ctl_mode, S_IRUGO, lp8788_get_bl_ctl_mode, NULL);

which isn't documented anywhere?

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