include/linux/leds-lp3952.h

   1 /*
   2  *      LED driver for TI lp3952 controller
   3  *
   4  *      Copyright (C) 2016, DAQRI, LLC.
   5  *      Author: Tony Makkiel <tony.makkiel@daqri.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  *
  11  */
  12
  13 #ifndef LEDS_LP3952_H_
  14 #define LEDS_LP3952_H_
  15
  16 #define LP3952_NAME                         "lp3952"
  17 #define LP3952_CMD_REG_COUNT                8
  18 #define LP3952_BRIGHT_MAX                   4
  19 #define LP3952_LABEL_MAX_LEN                15
  20
  21 #define LP3952_REG_LED_CTRL                 0x00
  22 #define LP3952_REG_R1_BLNK_TIME_CTRL        0x01
  23 #define LP3952_REG_R1_BLNK_CYCLE_CTRL       0x02
  24 #define LP3952_REG_G1_BLNK_TIME_CTRL        0x03
  25 #define LP3952_REG_G1_BLNK_CYCLE_CTRL       0x04
  26 #define LP3952_REG_B1_BLNK_TIME_CTRL        0x05
  27 #define LP3952_REG_B1_BLNK_CYCLE_CTRL       0x06
  28 #define LP3952_REG_ENABLES                  0x0B
  29 #define LP3952_REG_PAT_GEN_CTRL             0x11
  30 #define LP3952_REG_RGB1_MAX_I_CTRL          0x12
  31 #define LP3952_REG_RGB2_MAX_I_CTRL          0x13
  32 #define LP3952_REG_CMD_0                    0x50
  33 #define LP3952_REG_RESET                    0x60
  34 #define REG_MAX                             LP3952_REG_RESET
  35
  36 #define LP3952_PATRN_LOOP                   BIT(1)
  37 #define LP3952_PATRN_GEN_EN                 BIT(2)
  38 #define LP3952_INT_B00ST_LDR                BIT(2)
  39 #define LP3952_ACTIVE_MODE                  BIT(6)
  40 #define LP3952_LED_MASK_ALL                 0x3f
  41
  42 /* Transition Time in ms */
  43 enum lp3952_tt {
  44         TT0,
  45         TT55,
  46         TT110,
  47         TT221,
  48         TT422,
  49         TT885,
  50         TT1770,
  51         TT3539
  52 };
  53
  54 /* Command Execution Time in ms */
  55 enum lp3952_cet {
  56         CET197,
  57         CET393,
  58         CET590,
  59         CET786,
  60         CET1180,
  61         CET1376,
  62         CET1573,
  63         CET1769,
  64         CET1966,
  65         CET2163,
  66         CET2359,
  67         CET2556,
  68         CET2763,
  69         CET2949,
  70         CET3146
  71 };
  72
  73 /* Max Current in % */
  74 enum lp3952_colour_I_log_0 {
  75         I0,
  76         I7,
  77         I14,
  78         I21,
  79         I32,
  80         I46,
  81         I71,
  82         I100
  83 };
  84
  85 enum lp3952_leds {
  86         LP3952_BLUE_2,
  87         LP3952_GREEN_2,
  88         LP3952_RED_2,
  89         LP3952_BLUE_1,
  90         LP3952_GREEN_1,
  91         LP3952_RED_1,
  92         LP3952_LED_ALL
  93 };
  94
  95 struct lp3952_ctrl_hdl {
  96         struct led_classdev cdev;
  97         char name[LP3952_LABEL_MAX_LEN];
  98         enum lp3952_leds channel;
  99         void *priv;
 100 };
 101
 102 struct ptrn_gen_cmd {
 103         union {
 104                 struct {
 105                         u16 tt:3;
 106                         u16 b:3;
 107                         u16 cet:4;
 108                         u16 g:3;
 109                         u16 r:3;
 110                 };
 111                 struct {
 112                         u8 lsb;
 113                         u8 msb;
 114                 } bytes;
 115         };
 116 } __packed;
 117
 118 struct lp3952_led_array {
 119         struct regmap *regmap;
 120         struct i2c_client *client;
 121         struct gpio_desc *enable_gpio;
 122         struct lp3952_ctrl_hdl leds[LP3952_LED_ALL];
 123 };
 124
 125 #endif /* LEDS_LP3952_H_ */