LXR linux/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
  94struct 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
 107struct 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 */
 124