mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-26 22:24:09 +08:00
d2912cb15b
Based on 2 normalized pattern(s): 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 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 # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
204 lines
5.7 KiB
C
204 lines
5.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* LP55XX Common Driver Header
|
|
*
|
|
* Copyright (C) 2012 Texas Instruments
|
|
*
|
|
* Author: Milo(Woogyom) Kim <milo.kim@ti.com>
|
|
*
|
|
* Derived from leds-lp5521.c, leds-lp5523.c
|
|
*/
|
|
|
|
#ifndef _LEDS_LP55XX_COMMON_H
|
|
#define _LEDS_LP55XX_COMMON_H
|
|
|
|
enum lp55xx_engine_index {
|
|
LP55XX_ENGINE_INVALID,
|
|
LP55XX_ENGINE_1,
|
|
LP55XX_ENGINE_2,
|
|
LP55XX_ENGINE_3,
|
|
LP55XX_ENGINE_MAX = LP55XX_ENGINE_3,
|
|
};
|
|
|
|
enum lp55xx_engine_mode {
|
|
LP55XX_ENGINE_DISABLED,
|
|
LP55XX_ENGINE_LOAD,
|
|
LP55XX_ENGINE_RUN,
|
|
};
|
|
|
|
#define LP55XX_DEV_ATTR_RW(name, show, store) \
|
|
DEVICE_ATTR(name, S_IRUGO | S_IWUSR, show, store)
|
|
#define LP55XX_DEV_ATTR_RO(name, show) \
|
|
DEVICE_ATTR(name, S_IRUGO, show, NULL)
|
|
#define LP55XX_DEV_ATTR_WO(name, store) \
|
|
DEVICE_ATTR(name, S_IWUSR, NULL, store)
|
|
|
|
#define show_mode(nr) \
|
|
static ssize_t show_engine##nr##_mode(struct device *dev, \
|
|
struct device_attribute *attr, \
|
|
char *buf) \
|
|
{ \
|
|
return show_engine_mode(dev, attr, buf, nr); \
|
|
}
|
|
|
|
#define store_mode(nr) \
|
|
static ssize_t store_engine##nr##_mode(struct device *dev, \
|
|
struct device_attribute *attr, \
|
|
const char *buf, size_t len) \
|
|
{ \
|
|
return store_engine_mode(dev, attr, buf, len, nr); \
|
|
}
|
|
|
|
#define show_leds(nr) \
|
|
static ssize_t show_engine##nr##_leds(struct device *dev, \
|
|
struct device_attribute *attr, \
|
|
char *buf) \
|
|
{ \
|
|
return show_engine_leds(dev, attr, buf, nr); \
|
|
}
|
|
|
|
#define store_leds(nr) \
|
|
static ssize_t store_engine##nr##_leds(struct device *dev, \
|
|
struct device_attribute *attr, \
|
|
const char *buf, size_t len) \
|
|
{ \
|
|
return store_engine_leds(dev, attr, buf, len, nr); \
|
|
}
|
|
|
|
#define store_load(nr) \
|
|
static ssize_t store_engine##nr##_load(struct device *dev, \
|
|
struct device_attribute *attr, \
|
|
const char *buf, size_t len) \
|
|
{ \
|
|
return store_engine_load(dev, attr, buf, len, nr); \
|
|
}
|
|
|
|
struct lp55xx_led;
|
|
struct lp55xx_chip;
|
|
|
|
/*
|
|
* struct lp55xx_reg
|
|
* @addr : Register address
|
|
* @val : Register value
|
|
*/
|
|
struct lp55xx_reg {
|
|
u8 addr;
|
|
u8 val;
|
|
};
|
|
|
|
/*
|
|
* struct lp55xx_device_config
|
|
* @reset : Chip specific reset command
|
|
* @enable : Chip specific enable command
|
|
* @max_channel : Maximum number of channels
|
|
* @post_init_device : Chip specific initialization code
|
|
* @brightness_fn : Brightness function
|
|
* @set_led_current : LED current set function
|
|
* @firmware_cb : Call function when the firmware is loaded
|
|
* @run_engine : Run internal engine for pattern
|
|
* @dev_attr_group : Device specific attributes
|
|
*/
|
|
struct lp55xx_device_config {
|
|
const struct lp55xx_reg reset;
|
|
const struct lp55xx_reg enable;
|
|
const int max_channel;
|
|
|
|
/* define if the device has specific initialization process */
|
|
int (*post_init_device) (struct lp55xx_chip *chip);
|
|
|
|
/* access brightness register */
|
|
int (*brightness_fn)(struct lp55xx_led *led);
|
|
|
|
/* current setting function */
|
|
void (*set_led_current) (struct lp55xx_led *led, u8 led_current);
|
|
|
|
/* access program memory when the firmware is loaded */
|
|
void (*firmware_cb)(struct lp55xx_chip *chip);
|
|
|
|
/* used for running firmware LED patterns */
|
|
void (*run_engine) (struct lp55xx_chip *chip, bool start);
|
|
|
|
/* additional device specific attributes */
|
|
const struct attribute_group *dev_attr_group;
|
|
};
|
|
|
|
/*
|
|
* struct lp55xx_engine
|
|
* @mode : Engine mode
|
|
* @led_mux : Mux bits for LED selection. Only used in LP5523
|
|
*/
|
|
struct lp55xx_engine {
|
|
enum lp55xx_engine_mode mode;
|
|
u16 led_mux;
|
|
};
|
|
|
|
/*
|
|
* struct lp55xx_chip
|
|
* @cl : I2C communication for access registers
|
|
* @pdata : Platform specific data
|
|
* @lock : Lock for user-space interface
|
|
* @num_leds : Number of registered LEDs
|
|
* @cfg : Device specific configuration data
|
|
* @engine_idx : Selected engine number
|
|
* @engines : Engine structure for the device attribute R/W interface
|
|
* @fw : Firmware data for running a LED pattern
|
|
*/
|
|
struct lp55xx_chip {
|
|
struct i2c_client *cl;
|
|
struct clk *clk;
|
|
struct lp55xx_platform_data *pdata;
|
|
struct mutex lock; /* lock for user-space interface */
|
|
int num_leds;
|
|
struct lp55xx_device_config *cfg;
|
|
enum lp55xx_engine_index engine_idx;
|
|
struct lp55xx_engine engines[LP55XX_ENGINE_MAX];
|
|
const struct firmware *fw;
|
|
};
|
|
|
|
/*
|
|
* struct lp55xx_led
|
|
* @chan_nr : Channel number
|
|
* @cdev : LED class device
|
|
* @led_current : Current setting at each led channel
|
|
* @max_current : Maximun current at each led channel
|
|
* @brightness : Brightness value
|
|
* @chip : The lp55xx chip data
|
|
*/
|
|
struct lp55xx_led {
|
|
int chan_nr;
|
|
struct led_classdev cdev;
|
|
u8 led_current;
|
|
u8 max_current;
|
|
u8 brightness;
|
|
struct lp55xx_chip *chip;
|
|
};
|
|
|
|
/* register access */
|
|
extern int lp55xx_write(struct lp55xx_chip *chip, u8 reg, u8 val);
|
|
extern int lp55xx_read(struct lp55xx_chip *chip, u8 reg, u8 *val);
|
|
extern int lp55xx_update_bits(struct lp55xx_chip *chip, u8 reg,
|
|
u8 mask, u8 val);
|
|
|
|
/* external clock detection */
|
|
extern bool lp55xx_is_extclk_used(struct lp55xx_chip *chip);
|
|
|
|
/* common device init/deinit functions */
|
|
extern int lp55xx_init_device(struct lp55xx_chip *chip);
|
|
extern void lp55xx_deinit_device(struct lp55xx_chip *chip);
|
|
|
|
/* common LED class device functions */
|
|
extern int lp55xx_register_leds(struct lp55xx_led *led,
|
|
struct lp55xx_chip *chip);
|
|
extern void lp55xx_unregister_leds(struct lp55xx_led *led,
|
|
struct lp55xx_chip *chip);
|
|
|
|
/* common device attributes functions */
|
|
extern int lp55xx_register_sysfs(struct lp55xx_chip *chip);
|
|
extern void lp55xx_unregister_sysfs(struct lp55xx_chip *chip);
|
|
|
|
/* common device tree population function */
|
|
extern struct lp55xx_platform_data
|
|
*lp55xx_of_populate_pdata(struct device *dev, struct device_node *np);
|
|
|
|
#endif /* _LEDS_LP55XX_COMMON_H */
|