forked from luck/tmp_suning_uos_patched
d966c943e4
The chip can drive 2 sets of RGB leds. Controller can be controlled via PWM, I2C and audio synchronisation. This driver uses I2C to communicate with the chip. Datasheet: http://www.ti.com/lit/gpn/lp3952 Signed-off-by: Tony Makkiel <tony.makkiel@daqri.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
126 lines
2.5 KiB
C
126 lines
2.5 KiB
C
/*
|
|
* LED driver for TI lp3952 controller
|
|
*
|
|
* Copyright (C) 2016, DAQRI, LLC.
|
|
* Author: Tony Makkiel <tony.makkiel@daqri.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 LEDS_LP3952_H_
|
|
#define LEDS_LP3952_H_
|
|
|
|
#define LP3952_NAME "lp3952"
|
|
#define LP3952_CMD_REG_COUNT 8
|
|
#define LP3952_BRIGHT_MAX 4
|
|
#define LP3952_LABEL_MAX_LEN 15
|
|
|
|
#define LP3952_REG_LED_CTRL 0x00
|
|
#define LP3952_REG_R1_BLNK_TIME_CTRL 0x01
|
|
#define LP3952_REG_R1_BLNK_CYCLE_CTRL 0x02
|
|
#define LP3952_REG_G1_BLNK_TIME_CTRL 0x03
|
|
#define LP3952_REG_G1_BLNK_CYCLE_CTRL 0x04
|
|
#define LP3952_REG_B1_BLNK_TIME_CTRL 0x05
|
|
#define LP3952_REG_B1_BLNK_CYCLE_CTRL 0x06
|
|
#define LP3952_REG_ENABLES 0x0B
|
|
#define LP3952_REG_PAT_GEN_CTRL 0x11
|
|
#define LP3952_REG_RGB1_MAX_I_CTRL 0x12
|
|
#define LP3952_REG_RGB2_MAX_I_CTRL 0x13
|
|
#define LP3952_REG_CMD_0 0x50
|
|
#define LP3952_REG_RESET 0x60
|
|
#define REG_MAX LP3952_REG_RESET
|
|
|
|
#define LP3952_PATRN_LOOP BIT(1)
|
|
#define LP3952_PATRN_GEN_EN BIT(2)
|
|
#define LP3952_INT_B00ST_LDR BIT(2)
|
|
#define LP3952_ACTIVE_MODE BIT(6)
|
|
#define LP3952_LED_MASK_ALL 0x3f
|
|
|
|
/* Transition Time in ms */
|
|
enum lp3952_tt {
|
|
TT0,
|
|
TT55,
|
|
TT110,
|
|
TT221,
|
|
TT422,
|
|
TT885,
|
|
TT1770,
|
|
TT3539
|
|
};
|
|
|
|
/* Command Execution Time in ms */
|
|
enum lp3952_cet {
|
|
CET197,
|
|
CET393,
|
|
CET590,
|
|
CET786,
|
|
CET1180,
|
|
CET1376,
|
|
CET1573,
|
|
CET1769,
|
|
CET1966,
|
|
CET2163,
|
|
CET2359,
|
|
CET2556,
|
|
CET2763,
|
|
CET2949,
|
|
CET3146
|
|
};
|
|
|
|
/* Max Current in % */
|
|
enum lp3952_colour_I_log_0 {
|
|
I0,
|
|
I7,
|
|
I14,
|
|
I21,
|
|
I32,
|
|
I46,
|
|
I71,
|
|
I100
|
|
};
|
|
|
|
enum lp3952_leds {
|
|
LP3952_BLUE_2,
|
|
LP3952_GREEN_2,
|
|
LP3952_RED_2,
|
|
LP3952_BLUE_1,
|
|
LP3952_GREEN_1,
|
|
LP3952_RED_1,
|
|
LP3952_LED_ALL
|
|
};
|
|
|
|
struct lp3952_ctrl_hdl {
|
|
struct led_classdev cdev;
|
|
char name[LP3952_LABEL_MAX_LEN];
|
|
enum lp3952_leds channel;
|
|
void *priv;
|
|
};
|
|
|
|
struct ptrn_gen_cmd {
|
|
union {
|
|
struct {
|
|
u16 tt:3;
|
|
u16 b:3;
|
|
u16 cet:4;
|
|
u16 g:3;
|
|
u16 r:3;
|
|
};
|
|
struct {
|
|
u8 lsb;
|
|
u8 msb;
|
|
} bytes;
|
|
};
|
|
} __packed;
|
|
|
|
struct lp3952_led_array {
|
|
struct regmap *regmap;
|
|
struct i2c_client *client;
|
|
struct gpio_desc *enable_gpio;
|
|
struct lp3952_ctrl_hdl leds[LP3952_LED_ALL];
|
|
};
|
|
|
|
#endif /* LEDS_LP3952_H_ */
|