include/media/i2c/adp1653.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * include/media/i2c/adp1653.h
   4  *
   5  * Copyright (C) 2008--2011 Nokia Corporation
   6  *
   7  * Contact: Sakari Ailus <sakari.ailus@iki.fi>
   8  *
   9  * Contributors:
  10  *      Sakari Ailus <sakari.ailus@iki.fi>
  11  *      Tuukka Toivonen <tuukkat76@gmail.com>
  12  */
  13
  14 #ifndef ADP1653_H
  15 #define ADP1653_H
  16
  17 #include <linux/i2c.h>
  18 #include <linux/mutex.h>
  19 #include <linux/videodev2.h>
  20 #include <media/v4l2-ctrls.h>
  21 #include <media/v4l2-subdev.h>
  22
  23 #define ADP1653_NAME                            "adp1653"
  24 #define ADP1653_I2C_ADDR                        (0x60 >> 1)
  25
  26 /* Register definitions */
  27 #define ADP1653_REG_OUT_SEL                     0x00
  28 #define ADP1653_REG_OUT_SEL_HPLED_TORCH_MIN     0x01
  29 #define ADP1653_REG_OUT_SEL_HPLED_TORCH_MAX     0x0b
  30 #define ADP1653_REG_OUT_SEL_HPLED_FLASH_MIN     0x0c
  31 #define ADP1653_REG_OUT_SEL_HPLED_FLASH_MAX     0x1f
  32 #define ADP1653_REG_OUT_SEL_HPLED_SHIFT         3
  33 #define ADP1653_REG_OUT_SEL_ILED_MAX            0x07
  34 #define ADP1653_REG_OUT_SEL_ILED_SHIFT          0
  35
  36 #define ADP1653_REG_CONFIG                      0x01
  37 #define ADP1653_REG_CONFIG_TMR_CFG              (1 << 4)
  38 #define ADP1653_REG_CONFIG_TMR_SET_MAX          0x0f
  39 #define ADP1653_REG_CONFIG_TMR_SET_SHIFT        0
  40
  41 #define ADP1653_REG_SW_STROBE                   0x02
  42 #define ADP1653_REG_SW_STROBE_SW_STROBE         (1 << 0)
  43
  44 #define ADP1653_REG_FAULT                       0x03
  45 #define ADP1653_REG_FAULT_FLT_SCP               (1 << 3)
  46 #define ADP1653_REG_FAULT_FLT_OT                (1 << 2)
  47 #define ADP1653_REG_FAULT_FLT_TMR               (1 << 1)
  48 #define ADP1653_REG_FAULT_FLT_OV                (1 << 0)
  49
  50 #define ADP1653_INDICATOR_INTENSITY_MIN         0
  51 #define ADP1653_INDICATOR_INTENSITY_STEP        2500
  52 #define ADP1653_INDICATOR_INTENSITY_MAX         \
  53         (ADP1653_REG_OUT_SEL_ILED_MAX * ADP1653_INDICATOR_INTENSITY_STEP)
  54 #define ADP1653_INDICATOR_INTENSITY_uA_TO_REG(a) \
  55         ((a) / ADP1653_INDICATOR_INTENSITY_STEP)
  56 #define ADP1653_INDICATOR_INTENSITY_REG_TO_uA(a) \
  57         ((a) * ADP1653_INDICATOR_INTENSITY_STEP)
  58
  59 #define ADP1653_FLASH_INTENSITY_BASE            35
  60 #define ADP1653_FLASH_INTENSITY_STEP            15
  61 #define ADP1653_FLASH_INTENSITY_MIN                                     \
  62         (ADP1653_FLASH_INTENSITY_BASE                                   \
  63          + ADP1653_REG_OUT_SEL_HPLED_FLASH_MIN * ADP1653_FLASH_INTENSITY_STEP)
  64 #define ADP1653_FLASH_INTENSITY_MAX                     \
  65         (ADP1653_FLASH_INTENSITY_MIN +                  \
  66          (ADP1653_REG_OUT_SEL_HPLED_FLASH_MAX -         \
  67           ADP1653_REG_OUT_SEL_HPLED_FLASH_MIN + 1) *    \
  68          ADP1653_FLASH_INTENSITY_STEP)
  69
  70 #define ADP1653_FLASH_INTENSITY_mA_TO_REG(a)                            \
  71         ((a) < ADP1653_FLASH_INTENSITY_BASE ? 0 :                       \
  72          (((a) - ADP1653_FLASH_INTENSITY_BASE) / ADP1653_FLASH_INTENSITY_STEP))
  73 #define ADP1653_FLASH_INTENSITY_REG_TO_mA(a)            \
  74         ((a) * ADP1653_FLASH_INTENSITY_STEP + ADP1653_FLASH_INTENSITY_BASE)
  75
  76 #define ADP1653_TORCH_INTENSITY_MIN                                     \
  77         (ADP1653_FLASH_INTENSITY_BASE                                   \
  78          + ADP1653_REG_OUT_SEL_HPLED_TORCH_MIN * ADP1653_FLASH_INTENSITY_STEP)
  79 #define ADP1653_TORCH_INTENSITY_MAX                     \
  80         (ADP1653_TORCH_INTENSITY_MIN +                  \
  81          (ADP1653_REG_OUT_SEL_HPLED_TORCH_MAX -         \
  82           ADP1653_REG_OUT_SEL_HPLED_TORCH_MIN + 1) *    \
  83          ADP1653_FLASH_INTENSITY_STEP)
  84
  85 struct adp1653_platform_data {
  86         int (*power)(struct v4l2_subdev *sd, int on);
  87
  88         u32 max_flash_timeout;          /* flash light timeout in us */
  89         u32 max_flash_intensity;        /* led intensity, flash mode, mA */
  90         u32 max_torch_intensity;        /* led intensity, torch mode, mA */
  91         u32 max_indicator_intensity;    /* indicator led intensity, uA */
  92
  93         struct gpio_desc *enable_gpio;  /* for device-tree based boot */
  94 };
  95
  96 #define to_adp1653_flash(sd)    container_of(sd, struct adp1653_flash, subdev)
  97
  98 struct adp1653_flash {
  99         struct v4l2_subdev subdev;
 100         struct adp1653_platform_data *platform_data;
 101
 102         struct v4l2_ctrl_handler ctrls;
 103         struct v4l2_ctrl *led_mode;
 104         struct v4l2_ctrl *flash_timeout;
 105         struct v4l2_ctrl *flash_intensity;
 106         struct v4l2_ctrl *torch_intensity;
 107         struct v4l2_ctrl *indicator_intensity;
 108
 109         struct mutex power_lock;
 110         int power_count;
 111         int fault;
 112 };
 113
 114 #endif /* ADP1653_H */