leds-lp3952.h

  1/* SPDX-License-Identifier: GPL-2.0-only */
  2/*
  3 *	LED driver for TI lp3952 controller
  4 *
  5 *	Copyright (C) 2016, DAQRI, LLC.
  6 *	Author: Tony Makkiel <tony.makkiel@daqri.com>
  7 */
  8
  9#ifndef LEDS_LP3952_H_
 10#define LEDS_LP3952_H_
 11
 12#define LP3952_NAME                         "lp3952"
 13#define LP3952_CMD_REG_COUNT                8
 14#define LP3952_BRIGHT_MAX                   4
 15#define LP3952_LABEL_MAX_LEN                15
 16
 17#define LP3952_REG_LED_CTRL                 0x00
 18#define LP3952_REG_R1_BLNK_TIME_CTRL        0x01
 19#define LP3952_REG_R1_BLNK_CYCLE_CTRL       0x02
 20#define LP3952_REG_G1_BLNK_TIME_CTRL        0x03
 21#define LP3952_REG_G1_BLNK_CYCLE_CTRL       0x04
 22#define LP3952_REG_B1_BLNK_TIME_CTRL        0x05
 23#define LP3952_REG_B1_BLNK_CYCLE_CTRL       0x06
 24#define LP3952_REG_ENABLES                  0x0B
 25#define LP3952_REG_PAT_GEN_CTRL             0x11
 26#define LP3952_REG_RGB1_MAX_I_CTRL          0x12
 27#define LP3952_REG_RGB2_MAX_I_CTRL          0x13
 28#define LP3952_REG_CMD_0                    0x50
 29#define LP3952_REG_RESET                    0x60
 30#define REG_MAX                             LP3952_REG_RESET
 31
 32#define LP3952_PATRN_LOOP                   BIT(1)
 33#define LP3952_PATRN_GEN_EN                 BIT(2)
 34#define LP3952_INT_B00ST_LDR                BIT(2)
 35#define LP3952_ACTIVE_MODE                  BIT(6)
 36#define LP3952_LED_MASK_ALL                 0x3f
 37
 38/* Transition Time in ms */
 39enum lp3952_tt {
 40	TT0,
 41	TT55,
 42	TT110,
 43	TT221,
 44	TT422,
 45	TT885,
 46	TT1770,
 47	TT3539
 48};
 49
 50/* Command Execution Time in ms */
 51enum lp3952_cet {
 52	CET197,
 53	CET393,
 54	CET590,
 55	CET786,
 56	CET1180,
 57	CET1376,
 58	CET1573,
 59	CET1769,
 60	CET1966,
 61	CET2163,
 62	CET2359,
 63	CET2556,
 64	CET2763,
 65	CET2949,
 66	CET3146
 67};
 68
 69/* Max Current in % */
 70enum lp3952_colour_I_log_0 {
 71	I0,
 72	I7,
 73	I14,
 74	I21,
 75	I32,
 76	I46,
 77	I71,
 78	I100
 79};
 80
 81enum lp3952_leds {
 82	LP3952_BLUE_2,
 83	LP3952_GREEN_2,
 84	LP3952_RED_2,
 85	LP3952_BLUE_1,
 86	LP3952_GREEN_1,
 87	LP3952_RED_1,
 88	LP3952_LED_ALL
 89};
 90
 91struct lp3952_ctrl_hdl {
 92	struct led_classdev cdev;
 93	char name[LP3952_LABEL_MAX_LEN];
 94	enum lp3952_leds channel;
 95	void *priv;
 96};
 97
 98struct ptrn_gen_cmd {
 99	union {
100		struct {
101			u16 tt:3;
102			u16 b:3;
103			u16 cet:4;
104			u16 g:3;
105			u16 r:3;
106		};
107		struct {
108			u8 lsb;
109			u8 msb;
110		} bytes;
111	};
112} __packed;
113
114struct lp3952_led_array {
115	struct regmap *regmap;
116	struct i2c_client *client;
117	struct gpio_desc *enable_gpio;
118	struct lp3952_ctrl_hdl leds[LP3952_LED_ALL];
119};
120
121#endif /* LEDS_LP3952_H_ */