2011-03-23 07:30:16 +08:00
|
|
|
/*
|
|
|
|
* Copyright (C) 2011 ST-Ericsson SA.
|
|
|
|
* Copyright (C) 2009 Motorola, Inc.
|
|
|
|
*
|
|
|
|
* License Terms: GNU General Public License v2
|
|
|
|
*
|
|
|
|
* Simple driver for National Semiconductor LM35330 Backlight driver chip
|
|
|
|
*
|
|
|
|
* Author: Shreshtha Kumar SAHU <shreshthakumar.sahu@stericsson.com>
|
|
|
|
* based on leds-lm3530.c by Dan Murphy <D.Murphy@motorola.com>
|
|
|
|
*/
|
|
|
|
|
|
|
|
#ifndef _LINUX_LED_LM3530_H__
|
|
|
|
#define _LINUX_LED_LM3530_H__
|
|
|
|
|
|
|
|
#define LM3530_FS_CURR_5mA (0) /* Full Scale Current */
|
|
|
|
#define LM3530_FS_CURR_8mA (1)
|
|
|
|
#define LM3530_FS_CURR_12mA (2)
|
|
|
|
#define LM3530_FS_CURR_15mA (3)
|
|
|
|
#define LM3530_FS_CURR_19mA (4)
|
|
|
|
#define LM3530_FS_CURR_22mA (5)
|
|
|
|
#define LM3530_FS_CURR_26mA (6)
|
|
|
|
#define LM3530_FS_CURR_29mA (7)
|
|
|
|
|
|
|
|
#define LM3530_ALS_AVRG_TIME_32ms (0) /* ALS Averaging Time */
|
|
|
|
#define LM3530_ALS_AVRG_TIME_64ms (1)
|
|
|
|
#define LM3530_ALS_AVRG_TIME_128ms (2)
|
|
|
|
#define LM3530_ALS_AVRG_TIME_256ms (3)
|
|
|
|
#define LM3530_ALS_AVRG_TIME_512ms (4)
|
|
|
|
#define LM3530_ALS_AVRG_TIME_1024ms (5)
|
|
|
|
#define LM3530_ALS_AVRG_TIME_2048ms (6)
|
|
|
|
#define LM3530_ALS_AVRG_TIME_4096ms (7)
|
|
|
|
|
|
|
|
#define LM3530_RAMP_TIME_1ms (0) /* Brigtness Ramp Time */
|
|
|
|
#define LM3530_RAMP_TIME_130ms (1) /* Max to 0 and vice versa */
|
|
|
|
#define LM3530_RAMP_TIME_260ms (2)
|
|
|
|
#define LM3530_RAMP_TIME_520ms (3)
|
|
|
|
#define LM3530_RAMP_TIME_1s (4)
|
|
|
|
#define LM3530_RAMP_TIME_2s (5)
|
|
|
|
#define LM3530_RAMP_TIME_4s (6)
|
|
|
|
#define LM3530_RAMP_TIME_8s (7)
|
|
|
|
|
|
|
|
/* ALS Resistor Select */
|
2011-03-31 09:57:33 +08:00
|
|
|
#define LM3530_ALS_IMPD_Z (0x00) /* ALS Impedance */
|
2011-03-23 07:30:16 +08:00
|
|
|
#define LM3530_ALS_IMPD_13_53kOhm (0x01)
|
|
|
|
#define LM3530_ALS_IMPD_9_01kOhm (0x02)
|
|
|
|
#define LM3530_ALS_IMPD_5_41kOhm (0x03)
|
|
|
|
#define LM3530_ALS_IMPD_2_27kOhm (0x04)
|
|
|
|
#define LM3530_ALS_IMPD_1_94kOhm (0x05)
|
|
|
|
#define LM3530_ALS_IMPD_1_81kOhm (0x06)
|
|
|
|
#define LM3530_ALS_IMPD_1_6kOhm (0x07)
|
|
|
|
#define LM3530_ALS_IMPD_1_138kOhm (0x08)
|
|
|
|
#define LM3530_ALS_IMPD_1_05kOhm (0x09)
|
|
|
|
#define LM3530_ALS_IMPD_1_011kOhm (0x0A)
|
|
|
|
#define LM3530_ALS_IMPD_941Ohm (0x0B)
|
|
|
|
#define LM3530_ALS_IMPD_759Ohm (0x0C)
|
|
|
|
#define LM3530_ALS_IMPD_719Ohm (0x0D)
|
|
|
|
#define LM3530_ALS_IMPD_700Ohm (0x0E)
|
|
|
|
#define LM3530_ALS_IMPD_667Ohm (0x0F)
|
|
|
|
|
|
|
|
enum lm3530_mode {
|
|
|
|
LM3530_BL_MODE_MANUAL = 0, /* "man" */
|
|
|
|
LM3530_BL_MODE_ALS, /* "als" */
|
|
|
|
LM3530_BL_MODE_PWM, /* "pwm" */
|
|
|
|
};
|
|
|
|
|
|
|
|
/* ALS input select */
|
|
|
|
enum lm3530_als_mode {
|
|
|
|
LM3530_INPUT_AVRG = 0, /* ALS1 and ALS2 input average */
|
|
|
|
LM3530_INPUT_ALS1, /* ALS1 Input */
|
|
|
|
LM3530_INPUT_ALS2, /* ALS2 Input */
|
|
|
|
LM3530_INPUT_CEIL, /* Max of ALS1 and ALS2 */
|
|
|
|
};
|
|
|
|
|
|
|
|
/**
|
|
|
|
* struct lm3530_platform_data
|
|
|
|
* @mode: mode of operation i.e. Manual, ALS or PWM
|
|
|
|
* @als_input_mode: select source of ALS input - ALS1/2 or average
|
|
|
|
* @max_current: full scale LED current
|
|
|
|
* @pwm_pol_hi: PWM input polarity - active high/active low
|
|
|
|
* @als_avrg_time: ALS input averaging time
|
|
|
|
* @brt_ramp_law: brightness mapping mode - exponential/linear
|
|
|
|
* @brt_ramp_fall: rate of fall of led current
|
|
|
|
* @brt_ramp_rise: rate of rise of led current
|
|
|
|
* @als1_resistor_sel: internal resistance from ALS1 input to ground
|
|
|
|
* @als2_resistor_sel: internal resistance from ALS2 input to ground
|
|
|
|
* @brt_val: brightness value (0-255)
|
|
|
|
*/
|
|
|
|
struct lm3530_platform_data {
|
|
|
|
enum lm3530_mode mode;
|
|
|
|
enum lm3530_als_mode als_input_mode;
|
|
|
|
|
|
|
|
u8 max_current;
|
|
|
|
bool pwm_pol_hi;
|
|
|
|
u8 als_avrg_time;
|
|
|
|
|
|
|
|
bool brt_ramp_law;
|
|
|
|
u8 brt_ramp_fall;
|
|
|
|
u8 brt_ramp_rise;
|
|
|
|
|
|
|
|
u8 als1_resistor_sel;
|
|
|
|
u8 als2_resistor_sel;
|
|
|
|
|
|
|
|
u8 brt_val;
|
|
|
|
};
|
|
|
|
|
|
|
|
#endif /* _LINUX_LED_LM3530_H__ */
|