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remarkable-linux/include/linux/mfd/lp8788.h
Kim, Milo c5a51053cf backlight: add new lp8788 backlight driver 
TI LP8788 PMU supports regulators, battery charger, RTC, ADC, backlight
dri= ver 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.

The default values are set in case no platform data is defined.

[akpm@linux-foundation.org: checkpatch fixes]
Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Cc: Thierry Reding <thierry.reding@avionic-design.de>
Cc: "devendra.aaru" <devendra.aaru@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27 19:10:09 -08:00

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/*
* TI LP8788 MFD Device
*
* Copyright 2012 Texas Instruments
*
* Author: Milo(Woogyom) Kim <milo.kim@ti.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#ifndef __MFD_LP8788_H__
#define __MFD_LP8788_H__
#include <linux/gpio.h>
#include <linux/irqdomain.h>
#include <linux/pwm.h>
#include <linux/regmap.h>
#define LP8788_DEV_BUCK "lp8788-buck"
#define LP8788_DEV_DLDO "lp8788-dldo"
#define LP8788_DEV_ALDO "lp8788-aldo"
#define LP8788_DEV_CHARGER "lp8788-charger"
#define LP8788_DEV_RTC "lp8788-rtc"
#define LP8788_DEV_BACKLIGHT "lp8788-backlight"
#define LP8788_DEV_VIBRATOR "lp8788-vibrator"
#define LP8788_DEV_KEYLED "lp8788-keyled"
#define LP8788_DEV_ADC "lp8788-adc"
#define LP8788_NUM_BUCKS 4
#define LP8788_NUM_DLDOS 12
#define LP8788_NUM_ALDOS 10
#define LP8788_NUM_BUCK2_DVS 2
#define LP8788_CHG_IRQ "CHG_IRQ"
#define LP8788_PRSW_IRQ "PRSW_IRQ"
#define LP8788_BATT_IRQ "BATT_IRQ"
#define LP8788_ALM_IRQ "ALARM_IRQ"
enum lp8788_int_id {
/* interrup register 1 : Addr 00h */
LP8788_INT_TSDL,
LP8788_INT_TSDH,
LP8788_INT_UVLO,
LP8788_INT_FLAGMON,
LP8788_INT_PWRON_TIME,
LP8788_INT_PWRON,
LP8788_INT_COMP1,
LP8788_INT_COMP2,
/* interrupt register 2 : Addr 01h */
LP8788_INT_CHG_INPUT_STATE,
LP8788_INT_CHG_STATE,
LP8788_INT_EOC,
LP8788_INT_CHG_RESTART,
LP8788_INT_RESTART_TIMEOUT,
LP8788_INT_FULLCHG_TIMEOUT,
LP8788_INT_PRECHG_TIMEOUT,
/* interrupt register 3 : Addr 02h */
LP8788_INT_RTC_ALARM1 = 17,
LP8788_INT_RTC_ALARM2,
LP8788_INT_ENTER_SYS_SUPPORT,
LP8788_INT_EXIT_SYS_SUPPORT,
LP8788_INT_BATT_LOW,
LP8788_INT_NO_BATT,
LP8788_INT_MAX = 24,
};
enum lp8788_dvs_sel {
DVS_SEL_V0,
DVS_SEL_V1,
DVS_SEL_V2,
DVS_SEL_V3,
};
enum lp8788_ext_ldo_en_id {
EN_ALDO1,
EN_ALDO234,
EN_ALDO5,
EN_ALDO7,
EN_DLDO7,
EN_DLDO911,
EN_LDOS_MAX,
};
enum lp8788_charger_event {
NO_CHARGER,
CHARGER_DETECTED,
};
enum lp8788_bl_ctrl_mode {
LP8788_BL_REGISTER_ONLY,
LP8788_BL_COMB_PWM_BASED, /* PWM + I2C, changed by PWM input */
LP8788_BL_COMB_REGISTER_BASED, /* PWM + I2C, changed by I2C */
};
enum lp8788_bl_dim_mode {
LP8788_DIM_EXPONENTIAL,
LP8788_DIM_LINEAR,
};
enum lp8788_bl_full_scale_current {
LP8788_FULLSCALE_5000uA,
LP8788_FULLSCALE_8500uA,
LP8788_FULLSCALE_1200uA,
LP8788_FULLSCALE_1550uA,
LP8788_FULLSCALE_1900uA,
LP8788_FULLSCALE_2250uA,
LP8788_FULLSCALE_2600uA,
LP8788_FULLSCALE_2950uA,
};
enum lp8788_bl_ramp_step {
LP8788_RAMP_8us,
LP8788_RAMP_1024us,
LP8788_RAMP_2048us,
LP8788_RAMP_4096us,
LP8788_RAMP_8192us,
LP8788_RAMP_16384us,
LP8788_RAMP_32768us,
LP8788_RAMP_65538us,
};
enum lp8788_isink_scale {
LP8788_ISINK_SCALE_100mA,
LP8788_ISINK_SCALE_120mA,
};
enum lp8788_isink_number {
LP8788_ISINK_1,
LP8788_ISINK_2,
LP8788_ISINK_3,
};
enum lp8788_alarm_sel {
LP8788_ALARM_1,
LP8788_ALARM_2,
LP8788_ALARM_MAX,
};
enum lp8788_adc_id {
LPADC_VBATT_5P5,
LPADC_VIN_CHG,
LPADC_IBATT,
LPADC_IC_TEMP,
LPADC_VBATT_6P0,
LPADC_VBATT_5P0,
LPADC_ADC1,
LPADC_ADC2,
LPADC_VDD,
LPADC_VCOIN,
LPADC_VDD_LDO,
LPADC_ADC3,
LPADC_ADC4,
LPADC_MAX,
};
struct lp8788;
/*
* lp8788_buck1_dvs
* @gpio : gpio pin number for dvs control
* @vsel : dvs selector for buck v1 register
*/
struct lp8788_buck1_dvs {
int gpio;
enum lp8788_dvs_sel vsel;
};
/*
* lp8788_buck2_dvs
* @gpio : two gpio pin numbers are used for dvs
* @vsel : dvs selector for buck v2 register
*/
struct lp8788_buck2_dvs {
int gpio[LP8788_NUM_BUCK2_DVS];
enum lp8788_dvs_sel vsel;
};
/*
* struct lp8788_ldo_enable_pin
*
* Basically, all LDOs are enabled through the I2C commands.
* But ALDO 1 ~ 5, 7, DLDO 7, 9, 11 can be enabled by external gpio pins.
*
* @gpio : gpio number which is used for enabling ldos
* @init_state : initial gpio state (ex. GPIOF_OUT_INIT_LOW)
*/
struct lp8788_ldo_enable_pin {
int gpio;
int init_state;
};
/*
* struct lp8788_chg_param
* @addr : charging control register address (range : 0x11 ~ 0x1C)
* @val : charging parameter value
*/
struct lp8788_chg_param {
u8 addr;
u8 val;
};
/*
* struct lp8788_charger_platform_data
* @adc_vbatt : adc channel name for battery voltage
* @adc_batt_temp : adc channel name for battery temperature
* @max_vbatt_mv : used for calculating battery capacity
* @chg_params : initial charging parameters
* @num_chg_params : numbers of charging parameters
* @charger_event : the charger event can be reported to the platform side
*/
struct lp8788_charger_platform_data {
const char *adc_vbatt;
const char *adc_batt_temp;
unsigned int max_vbatt_mv;
struct lp8788_chg_param *chg_params;
int num_chg_params;
void (*charger_event) (struct lp8788 *lp,
enum lp8788_charger_event event);
};
/*
* struct lp8788_backlight_platform_data
* @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.
Only valid when bl_mode is LP8788_BL_COMB_PWM_BASED
*/
struct lp8788_backlight_platform_data {
char *name;
int initial_brightness;
enum lp8788_bl_ctrl_mode bl_mode;
enum lp8788_bl_dim_mode dim_mode;
enum lp8788_bl_full_scale_current full_scale;
enum lp8788_bl_ramp_step rise_time;
enum lp8788_bl_ramp_step fall_time;
enum pwm_polarity pwm_pol;
unsigned int period_ns;
};
/*
* struct lp8788_led_platform_data
* @name : led driver name. (default: "keyboard-backlight")
* @scale : current scale
* @num : current sink number
* @iout_code : current output value (Addr 9Ah ~ 9Bh)
*/
struct lp8788_led_platform_data {
char *name;
enum lp8788_isink_scale scale;
enum lp8788_isink_number num;
int iout_code;
};
/*
* struct lp8788_vib_platform_data
* @name : vibrator driver name
* @scale : current scale
* @num : current sink number
* @iout_code : current output value (Addr 9Ah ~ 9Bh)
* @pwm_code : PWM code value (Addr 9Ch ~ 9Eh)
*/
struct lp8788_vib_platform_data {
char *name;
enum lp8788_isink_scale scale;
enum lp8788_isink_number num;
int iout_code;
int pwm_code;
};
/*
* struct lp8788_platform_data
* @init_func : used for initializing registers
* before mfd driver is registered
* @buck_data : regulator initial data for buck
* @dldo_data : regulator initial data for digital ldo
* @aldo_data : regulator initial data for analog ldo
* @buck1_dvs : gpio configurations for buck1 dvs
* @buck2_dvs : gpio configurations for buck2 dvs
* @ldo_pin : gpio configurations for enabling LDOs
* @chg_pdata : platform data for charger driver
* @alarm_sel : rtc alarm selection (1 or 2)
* @bl_pdata : configurable data for backlight driver
* @led_pdata : configurable data for led driver
* @vib_pdata : configurable data for vibrator driver
* @adc_pdata : iio map data for adc driver
*/
struct lp8788_platform_data {
/* general system information */
int (*init_func) (struct lp8788 *lp);
/* regulators */
struct regulator_init_data *buck_data[LP8788_NUM_BUCKS];
struct regulator_init_data *dldo_data[LP8788_NUM_DLDOS];
struct regulator_init_data *aldo_data[LP8788_NUM_ALDOS];
struct lp8788_buck1_dvs *buck1_dvs;
struct lp8788_buck2_dvs *buck2_dvs;
struct lp8788_ldo_enable_pin *ldo_pin[EN_LDOS_MAX];
/* charger */
struct lp8788_charger_platform_data *chg_pdata;
/* rtc alarm */
enum lp8788_alarm_sel alarm_sel;
/* backlight */
struct lp8788_backlight_platform_data *bl_pdata;
/* current sinks */
struct lp8788_led_platform_data *led_pdata;
struct lp8788_vib_platform_data *vib_pdata;
/* adc iio map data */
struct iio_map *adc_pdata;
};
/*
* struct lp8788
* @dev : parent device pointer
* @regmap : used for i2c communcation on accessing registers
* @irqdm : interrupt domain for handling nested interrupt
* @irq : pin number of IRQ_N
* @pdata : lp8788 platform specific data
*/
struct lp8788 {
struct device *dev;
struct regmap *regmap;
struct irq_domain *irqdm;
int irq;
struct lp8788_platform_data *pdata;
};
int lp8788_irq_init(struct lp8788 *lp, int chip_irq);
void lp8788_irq_exit(struct lp8788 *lp);
int lp8788_read_byte(struct lp8788 *lp, u8 reg, u8 *data);
int lp8788_read_multi_bytes(struct lp8788 *lp, u8 reg, u8 *data, size_t count);
int lp8788_write_byte(struct lp8788 *lp, u8 reg, u8 data);
int lp8788_update_bits(struct lp8788 *lp, u8 reg, u8 mask, u8 data);
#endif
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