include/media/i2c/adp1653.h

   1 /*
   2  * include/media/i2c/adp1653.h
   3  *
   4  * Copyright (C) 2008--2011 Nokia Corporation
   5  *
   6  * Contact: Sakari Ailus <sakari.ailus@iki.fi>
   7  *
   8  * Contributors:
   9  *      Sakari Ailus <sakari.ailus@iki.fi>
  10  *      Tuukka Toivonen <tuukkat76@gmail.com>
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * version 2 as published by the Free Software Foundation.
  15  *
  16  * This program is distributed in the hope that it will be useful, but
  17  * WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * General Public License for more details.
  20  *
  21  */
  22
  23 #ifndef ADP1653_H
  24 #define ADP1653_H
  25
  26 #include <linux/i2c.h>
  27 #include <linux/mutex.h>
  28 #include <linux/videodev2.h>
  29 #include <media/v4l2-ctrls.h>
  30 #include <media/v4l2-subdev.h>
  31
  32 #define ADP1653_NAME                            "adp1653"
  33 #define ADP1653_I2C_ADDR                        (0x60 >> 1)
  34
  35 /* Register definitions */
  36 #define ADP1653_REG_OUT_SEL                     0x00
  37 #define ADP1653_REG_OUT_SEL_HPLED_TORCH_MIN     0x01
  38 #define ADP1653_REG_OUT_SEL_HPLED_TORCH_MAX     0x0b
  39 #define ADP1653_REG_OUT_SEL_HPLED_FLASH_MIN     0x0c
  40 #define ADP1653_REG_OUT_SEL_HPLED_FLASH_MAX     0x1f
  41 #define ADP1653_REG_OUT_SEL_HPLED_SHIFT         3
  42 #define ADP1653_REG_OUT_SEL_ILED_MAX            0x07
  43 #define ADP1653_REG_OUT_SEL_ILED_SHIFT          0
  44
  45 #define ADP1653_REG_CONFIG                      0x01
  46 #define ADP1653_REG_CONFIG_TMR_CFG              (1 << 4)
  47 #define ADP1653_REG_CONFIG_TMR_SET_MAX          0x0f
  48 #define ADP1653_REG_CONFIG_TMR_SET_SHIFT        0
  49
  50 #define ADP1653_REG_SW_STROBE                   0x02
  51 #define ADP1653_REG_SW_STROBE_SW_STROBE         (1 << 0)
  52
  53 #define ADP1653_REG_FAULT                       0x03
  54 #define ADP1653_REG_FAULT_FLT_SCP               (1 << 3)
  55 #define ADP1653_REG_FAULT_FLT_OT                (1 << 2)
  56 #define ADP1653_REG_FAULT_FLT_TMR               (1 << 1)
  57 #define ADP1653_REG_FAULT_FLT_OV                (1 << 0)
  58
  59 #define ADP1653_INDICATOR_INTENSITY_MIN         0
  60 #define ADP1653_INDICATOR_INTENSITY_STEP        2500
  61 #define ADP1653_INDICATOR_INTENSITY_MAX         \
  62         (ADP1653_REG_OUT_SEL_ILED_MAX * ADP1653_INDICATOR_INTENSITY_STEP)
  63 #define ADP1653_INDICATOR_INTENSITY_uA_TO_REG(a) \
  64         ((a) / ADP1653_INDICATOR_INTENSITY_STEP)
  65 #define ADP1653_INDICATOR_INTENSITY_REG_TO_uA(a) \
  66         ((a) * ADP1653_INDICATOR_INTENSITY_STEP)
  67
  68 #define ADP1653_FLASH_INTENSITY_BASE            35
  69 #define ADP1653_FLASH_INTENSITY_STEP            15
  70 #define ADP1653_FLASH_INTENSITY_MIN                                     \
  71         (ADP1653_FLASH_INTENSITY_BASE                                   \
  72          + ADP1653_REG_OUT_SEL_HPLED_FLASH_MIN * ADP1653_FLASH_INTENSITY_STEP)
  73 #define ADP1653_FLASH_INTENSITY_MAX                     \
  74         (ADP1653_FLASH_INTENSITY_MIN +                  \
  75          (ADP1653_REG_OUT_SEL_HPLED_FLASH_MAX -         \
  76           ADP1653_REG_OUT_SEL_HPLED_FLASH_MIN + 1) *    \
  77          ADP1653_FLASH_INTENSITY_STEP)
  78
  79 #define ADP1653_FLASH_INTENSITY_mA_TO_REG(a)                            \
  80         ((a) < ADP1653_FLASH_INTENSITY_BASE ? 0 :                       \
  81          (((a) - ADP1653_FLASH_INTENSITY_BASE) / ADP1653_FLASH_INTENSITY_STEP))
  82 #define ADP1653_FLASH_INTENSITY_REG_TO_mA(a)            \
  83         ((a) * ADP1653_FLASH_INTENSITY_STEP + ADP1653_FLASH_INTENSITY_BASE)
  84
  85 #define ADP1653_TORCH_INTENSITY_MIN                                     \
  86         (ADP1653_FLASH_INTENSITY_BASE                                   \
  87          + ADP1653_REG_OUT_SEL_HPLED_TORCH_MIN * ADP1653_FLASH_INTENSITY_STEP)
  88 #define ADP1653_TORCH_INTENSITY_MAX                     \
  89         (ADP1653_TORCH_INTENSITY_MIN +                  \
  90          (ADP1653_REG_OUT_SEL_HPLED_TORCH_MAX -         \
  91           ADP1653_REG_OUT_SEL_HPLED_TORCH_MIN + 1) *    \
  92          ADP1653_FLASH_INTENSITY_STEP)
  93
  94 struct adp1653_platform_data {
  95         int (*power)(struct v4l2_subdev *sd, int on);
  96
  97         u32 max_flash_timeout;          /* flash light timeout in us */
  98         u32 max_flash_intensity;        /* led intensity, flash mode, mA */
  99         u32 max_torch_intensity;        /* led intensity, torch mode, mA */
 100         u32 max_indicator_intensity;    /* indicator led intensity, uA */
 101
 102         struct gpio_desc *enable_gpio;  /* for device-tree based boot */
 103 };
 104
 105 #define to_adp1653_flash(sd)    container_of(sd, struct adp1653_flash, subdev)
 106
 107 struct adp1653_flash {
 108         struct v4l2_subdev subdev;
 109         struct adp1653_platform_data *platform_data;
 110
 111         struct v4l2_ctrl_handler ctrls;
 112         struct v4l2_ctrl *led_mode;
 113         struct v4l2_ctrl *flash_timeout;
 114         struct v4l2_ctrl *flash_intensity;
 115         struct v4l2_ctrl *torch_intensity;
 116         struct v4l2_ctrl *indicator_intensity;
 117
 118         struct mutex power_lock;
 119         int power_count;
 120         int fault;
 121 };
 122
 123 #endif /* ADP1653_H */