linux/include/media/adp1653.h
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   1/*
   2 * include/media/adp1653.h
   3 *
   4 * Copyright (C) 2008--2011 Nokia Corporation
   5 *
   6 * Contact: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>
   7 *
   8 * Contributors:
   9 *      Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>
  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 * You should have received a copy of the GNU General Public License
  22 * along with this program; if not, write to the Free Software
  23 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  24 * 02110-1301 USA
  25 *
  26 */
  27
  28#ifndef ADP1653_H
  29#define ADP1653_H
  30
  31#include <linux/i2c.h>
  32#include <linux/mutex.h>
  33#include <linux/videodev2.h>
  34#include <media/v4l2-ctrls.h>
  35#include <media/v4l2-subdev.h>
  36
  37#define ADP1653_NAME                            "adp1653"
  38#define ADP1653_I2C_ADDR                        (0x60 >> 1)
  39
  40/* Register definitions */
  41#define ADP1653_REG_OUT_SEL                     0x00
  42#define ADP1653_REG_OUT_SEL_HPLED_TORCH_MIN     0x01
  43#define ADP1653_REG_OUT_SEL_HPLED_TORCH_MAX     0x0b
  44#define ADP1653_REG_OUT_SEL_HPLED_FLASH_MIN     0x0c
  45#define ADP1653_REG_OUT_SEL_HPLED_FLASH_MAX     0x1f
  46#define ADP1653_REG_OUT_SEL_HPLED_SHIFT         3
  47#define ADP1653_REG_OUT_SEL_ILED_MAX            0x07
  48#define ADP1653_REG_OUT_SEL_ILED_SHIFT          0
  49
  50#define ADP1653_REG_CONFIG                      0x01
  51#define ADP1653_REG_CONFIG_TMR_CFG              (1 << 4)
  52#define ADP1653_REG_CONFIG_TMR_SET_MAX          0x0f
  53#define ADP1653_REG_CONFIG_TMR_SET_SHIFT        0
  54
  55#define ADP1653_REG_SW_STROBE                   0x02
  56#define ADP1653_REG_SW_STROBE_SW_STROBE         (1 << 0)
  57
  58#define ADP1653_REG_FAULT                       0x03
  59#define ADP1653_REG_FAULT_FLT_SCP               (1 << 3)
  60#define ADP1653_REG_FAULT_FLT_OT                (1 << 2)
  61#define ADP1653_REG_FAULT_FLT_TMR               (1 << 1)
  62#define ADP1653_REG_FAULT_FLT_OV                (1 << 0)
  63
  64#define ADP1653_INDICATOR_INTENSITY_MIN         0
  65#define ADP1653_INDICATOR_INTENSITY_STEP        2500
  66#define ADP1653_INDICATOR_INTENSITY_MAX         \
  67        (ADP1653_REG_OUT_SEL_ILED_MAX * ADP1653_INDICATOR_INTENSITY_STEP)
  68#define ADP1653_INDICATOR_INTENSITY_uA_TO_REG(a) \
  69        ((a) / ADP1653_INDICATOR_INTENSITY_STEP)
  70#define ADP1653_INDICATOR_INTENSITY_REG_TO_uA(a) \
  71        ((a) * ADP1653_INDICATOR_INTENSITY_STEP)
  72
  73#define ADP1653_FLASH_INTENSITY_BASE            35
  74#define ADP1653_FLASH_INTENSITY_STEP            15
  75#define ADP1653_FLASH_INTENSITY_MIN                                     \
  76        (ADP1653_FLASH_INTENSITY_BASE                                   \
  77         + ADP1653_REG_OUT_SEL_HPLED_FLASH_MIN * ADP1653_FLASH_INTENSITY_STEP)
  78#define ADP1653_FLASH_INTENSITY_MAX                     \
  79        (ADP1653_FLASH_INTENSITY_MIN +                  \
  80         (ADP1653_REG_OUT_SEL_HPLED_FLASH_MAX -         \
  81          ADP1653_REG_OUT_SEL_HPLED_FLASH_MIN + 1) *    \
  82         ADP1653_FLASH_INTENSITY_STEP)
  83
  84#define ADP1653_FLASH_INTENSITY_mA_TO_REG(a)                            \
  85        ((a) < ADP1653_FLASH_INTENSITY_BASE ? 0 :                       \
  86         (((a) - ADP1653_FLASH_INTENSITY_BASE) / ADP1653_FLASH_INTENSITY_STEP))
  87#define ADP1653_FLASH_INTENSITY_REG_TO_mA(a)            \
  88        ((a) * ADP1653_FLASH_INTENSITY_STEP + ADP1653_FLASH_INTENSITY_BASE)
  89
  90#define ADP1653_TORCH_INTENSITY_MIN                                     \
  91        (ADP1653_FLASH_INTENSITY_BASE                                   \
  92         + ADP1653_REG_OUT_SEL_HPLED_TORCH_MIN * ADP1653_FLASH_INTENSITY_STEP)
  93#define ADP1653_TORCH_INTENSITY_MAX                     \
  94        (ADP1653_TORCH_INTENSITY_MIN +                  \
  95         (ADP1653_REG_OUT_SEL_HPLED_TORCH_MAX -         \
  96          ADP1653_REG_OUT_SEL_HPLED_TORCH_MIN + 1) *    \
  97         ADP1653_FLASH_INTENSITY_STEP)
  98
  99struct adp1653_platform_data {
 100        int (*power)(struct v4l2_subdev *sd, int on);
 101
 102        u32 max_flash_timeout;          /* flash light timeout in us */
 103        u32 max_flash_intensity;        /* led intensity, flash mode */
 104        u32 max_torch_intensity;        /* led intensity, torch mode */
 105        u32 max_indicator_intensity;    /* indicator led intensity */
 106};
 107
 108#define to_adp1653_flash(sd)    container_of(sd, struct adp1653_flash, subdev)
 109
 110struct adp1653_flash {
 111        struct v4l2_subdev subdev;
 112        struct adp1653_platform_data *platform_data;
 113
 114        struct v4l2_ctrl_handler ctrls;
 115        struct v4l2_ctrl *led_mode;
 116        struct v4l2_ctrl *flash_timeout;
 117        struct v4l2_ctrl *flash_intensity;
 118        struct v4l2_ctrl *torch_intensity;
 119        struct v4l2_ctrl *indicator_intensity;
 120
 121        struct mutex power_lock;
 122        int power_count;
 123        int fault;
 124};
 125
 126#endif /* ADP1653_H */
 127
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