mirror of
https://github.com/torvalds/linux.git
synced 2024-11-29 07:31:29 +00:00
b9d55087df
Some LED chip supports up to 16 pages and with some magic they can be divided in 4 page for each ENGINE + 1 for each MUX. Following this we can support bigger programs up to 128 bytes. Rework the update_program_memory function to support program of multiple pages instead of hardcoding it to one page per programs. Signed-off-by: Christian Marangi <ansuelsmth@gmail.com> Link: https://lore.kernel.org/r/20240626160027.19703-19-ansuelsmth@gmail.com Signed-off-by: Lee Jones <lee@kernel.org>
283 lines
9.5 KiB
C
283 lines
9.5 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
|
|
|
|
#include <linux/led-class-multicolor.h>
|
|
|
|
#define LP55xx_BYTES_PER_PAGE 32 /* bytes */
|
|
|
|
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 LP55XX_DEV_ATTR_ENGINE_MODE(nr) \
|
|
static ssize_t show_engine##nr##_mode(struct device *dev, \
|
|
struct device_attribute *attr, \
|
|
char *buf) \
|
|
{ \
|
|
return lp55xx_show_engine_mode(dev, attr, buf, nr); \
|
|
} \
|
|
static ssize_t store_engine##nr##_mode(struct device *dev, \
|
|
struct device_attribute *attr, \
|
|
const char *buf, size_t len) \
|
|
{ \
|
|
return lp55xx_store_engine_mode(dev, attr, buf, len, nr); \
|
|
} \
|
|
static LP55XX_DEV_ATTR_RW(engine##nr##_mode, show_engine##nr##_mode, \
|
|
store_engine##nr##_mode)
|
|
|
|
#define LP55XX_DEV_ATTR_ENGINE_LEDS(nr) \
|
|
static ssize_t show_engine##nr##_leds(struct device *dev, \
|
|
struct device_attribute *attr, \
|
|
char *buf) \
|
|
{ \
|
|
return lp55xx_show_engine_leds(dev, attr, buf, nr); \
|
|
} \
|
|
static ssize_t store_engine##nr##_leds(struct device *dev, \
|
|
struct device_attribute *attr, \
|
|
const char *buf, size_t len) \
|
|
{ \
|
|
return lp55xx_store_engine_leds(dev, attr, buf, len, nr); \
|
|
} \
|
|
static LP55XX_DEV_ATTR_RW(engine##nr##_leds, show_engine##nr##_leds, \
|
|
store_engine##nr##_leds)
|
|
|
|
#define LP55XX_DEV_ATTR_ENGINE_LOAD(nr) \
|
|
static ssize_t store_engine##nr##_load(struct device *dev, \
|
|
struct device_attribute *attr, \
|
|
const char *buf, size_t len) \
|
|
{ \
|
|
return lp55xx_store_engine_load(dev, attr, buf, len, nr); \
|
|
} \
|
|
static LP55XX_DEV_ATTR_WO(engine##nr##_load, store_engine##nr##_load)
|
|
|
|
#define LP55XX_DEV_ATTR_MASTER_FADER(nr) \
|
|
static ssize_t show_master_fader##nr(struct device *dev, \
|
|
struct device_attribute *attr, \
|
|
char *buf) \
|
|
{ \
|
|
return lp55xx_show_master_fader(dev, attr, buf, nr); \
|
|
} \
|
|
static ssize_t store_master_fader##nr(struct device *dev, \
|
|
struct device_attribute *attr, \
|
|
const char *buf, size_t len) \
|
|
{ \
|
|
return lp55xx_store_master_fader(dev, attr, buf, len, nr); \
|
|
} \
|
|
static LP55XX_DEV_ATTR_RW(master_fader##nr, show_master_fader##nr, \
|
|
store_master_fader##nr)
|
|
|
|
struct lp55xx_led;
|
|
struct lp55xx_chip;
|
|
|
|
/*
|
|
* struct lp55xx_reg
|
|
* @addr : Register address
|
|
* @val : Register value (can also used as mask or shift)
|
|
*/
|
|
struct lp55xx_reg {
|
|
u8 addr;
|
|
union {
|
|
u8 val;
|
|
u8 mask;
|
|
u8 shift;
|
|
};
|
|
};
|
|
|
|
/*
|
|
* struct lp55xx_device_config
|
|
* @reg_op_mode : Chip specific OP MODE reg addr
|
|
* @engine_busy : Chip specific engine busy
|
|
* (if not supported 153 us sleep)
|
|
* @reset : Chip specific reset command
|
|
* @enable : Chip specific enable command
|
|
* @prog_mem_base : Chip specific base reg address for chip SMEM programming
|
|
* @reg_led_pwm_base : Chip specific base reg address for LED PWM conf
|
|
* @reg_led_current_base : Chip specific base reg address for LED current conf
|
|
* @reg_master_fader_base : Chip specific base reg address for master fader base
|
|
* @reg_led_ctrl_base : Chip specific base reg address for LED ctrl base
|
|
* @pages_per_engine : Assigned pages for each engine
|
|
* (if not set chip doesn't support pages)
|
|
* @max_channel : Maximum number of channels
|
|
* @post_init_device : Chip specific initialization code
|
|
* @brightness_fn : Brightness function
|
|
* @multicolor_brightness_fn : Multicolor 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 reg_op_mode; /* addr, shift */
|
|
const struct lp55xx_reg reg_exec; /* addr, shift */
|
|
const struct lp55xx_reg engine_busy; /* addr, mask */
|
|
const struct lp55xx_reg reset;
|
|
const struct lp55xx_reg enable;
|
|
const struct lp55xx_reg prog_mem_base;
|
|
const struct lp55xx_reg reg_led_pwm_base;
|
|
const struct lp55xx_reg reg_led_current_base;
|
|
const struct lp55xx_reg reg_master_fader_base;
|
|
const struct lp55xx_reg reg_led_ctrl_base;
|
|
const int pages_per_engine;
|
|
const int max_channel;
|
|
|
|
/* define if the device has specific initialization process */
|
|
int (*post_init_device) (struct lp55xx_chip *chip);
|
|
|
|
/* set LED brightness */
|
|
int (*brightness_fn)(struct lp55xx_led *led);
|
|
|
|
/* set multicolor LED brightness */
|
|
int (*multicolor_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;
|
|
const 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
|
|
* @mc_cdev : Multi color class device
|
|
* @color_components: Multi color LED map information
|
|
* @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;
|
|
struct led_classdev_mc mc_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 chip functions */
|
|
extern void lp55xx_stop_all_engine(struct lp55xx_chip *chip);
|
|
extern void lp55xx_load_engine(struct lp55xx_chip *chip);
|
|
extern int lp55xx_run_engine_common(struct lp55xx_chip *chip);
|
|
extern int lp55xx_update_program_memory(struct lp55xx_chip *chip,
|
|
const u8 *data, size_t size);
|
|
extern void lp55xx_firmware_loaded_cb(struct lp55xx_chip *chip);
|
|
extern int lp55xx_led_brightness(struct lp55xx_led *led);
|
|
extern int lp55xx_multicolor_brightness(struct lp55xx_led *led);
|
|
extern void lp55xx_set_led_current(struct lp55xx_led *led, u8 led_current);
|
|
extern void lp55xx_turn_off_channels(struct lp55xx_chip *chip);
|
|
extern void lp55xx_stop_engine(struct lp55xx_chip *chip);
|
|
|
|
/* common probe/remove function */
|
|
extern int lp55xx_probe(struct i2c_client *client);
|
|
extern void lp55xx_remove(struct i2c_client *client);
|
|
|
|
/* common sysfs function */
|
|
extern ssize_t lp55xx_show_engine_mode(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf, int nr);
|
|
extern ssize_t lp55xx_store_engine_mode(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t len, int nr);
|
|
extern ssize_t lp55xx_store_engine_load(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t len, int nr);
|
|
extern ssize_t lp55xx_show_engine_leds(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf, int nr);
|
|
extern ssize_t lp55xx_store_engine_leds(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t len, int nr);
|
|
extern ssize_t lp55xx_show_master_fader(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf, int nr);
|
|
extern ssize_t lp55xx_store_master_fader(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t len, int nr);
|
|
extern ssize_t lp55xx_show_master_fader_leds(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf);
|
|
extern ssize_t lp55xx_store_master_fader_leds(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t len);
|
|
|
|
#endif /* _LEDS_LP55XX_COMMON_H */
|