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mfd: Add LM3533 lighting-power core driver

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Add support for National Semiconductor / TI LM3533 lighting power chips.

This is the core driver which provides register access over I2C and
registers the ambient-light-sensor, LED and backlight sub-drivers.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Johan Hovold
2012-05-03 12:26:36 +02:00
committed by Samuel Ortiz
parent ae8406357e
commit 16c5c023aa
6 changed files with 992 additions and 0 deletions
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89
include/linux/mfd/lm3533.h Normal file
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/*
* lm3533.h -- LM3533 interface
*
* Copyright (C) 2011-2012 Texas Instruments
*
* Author: Johan Hovold <jhovold@gmail.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#ifndef __LINUX_MFD_LM3533_H
#define __LINUX_MFD_LM3533_H
#define LM3533_ATTR_RO(_name) \
DEVICE_ATTR(_name, S_IRUGO, show_##_name, NULL)
#define LM3533_ATTR_RW(_name) \
DEVICE_ATTR(_name, S_IRUGO | S_IWUSR , show_##_name, store_##_name)
struct device;
struct regmap;
struct lm3533 {
struct device *dev;
struct regmap *regmap;
int gpio_hwen;
int irq;
unsigned have_als:1;
unsigned have_backlights:1;
unsigned have_leds:1;
};
struct lm3533_ctrlbank {
struct lm3533 *lm3533;
struct device *dev;
int id;
};
struct lm3533_als_platform_data {
unsigned pwm_mode:1; /* PWM input mode (default analog) */
};
struct lm3533_bl_platform_data {
char *name;
u8 default_brightness; /* 0 - 255 */
u8 max_current; /* 0 - 31 */
u8 pwm; /* 0 - 0x3f */
};
struct lm3533_led_platform_data {
char *name;
const char *default_trigger;
u8 max_current; /* 0 - 31 */
u8 pwm; /* 0 - 0x3f */
};
struct lm3533_platform_data {
int gpio_hwen;
struct lm3533_als_platform_data *als;
struct lm3533_bl_platform_data *backlights;
int num_backlights;
struct lm3533_led_platform_data *leds;
int num_leds;
};
extern int lm3533_ctrlbank_enable(struct lm3533_ctrlbank *cb);
extern int lm3533_ctrlbank_disable(struct lm3533_ctrlbank *cb);
extern int lm3533_ctrlbank_set_brightness(struct lm3533_ctrlbank *cb, u8 val);
extern int lm3533_ctrlbank_get_brightness(struct lm3533_ctrlbank *cb, u8 *val);
extern int lm3533_ctrlbank_set_max_current(struct lm3533_ctrlbank *cb, u8 val);
extern int lm3533_ctrlbank_get_max_current(struct lm3533_ctrlbank *cb,
u8 *val);
extern int lm3533_ctrlbank_set_pwm(struct lm3533_ctrlbank *cb, u8 val);
extern int lm3533_ctrlbank_get_pwm(struct lm3533_ctrlbank *cb, u8 *val);
extern int lm3533_read(struct lm3533 *lm3533, u8 reg, u8 *val);
extern int lm3533_write(struct lm3533 *lm3533, u8 reg, u8 val);
extern int lm3533_update(struct lm3533 *lm3533, u8 reg, u8 val, u8 mask);
#endif /* __LINUX_MFD_LM3533_H */