include/media/adp1653.h

   1 /*
   2  * include/media/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  * 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
  99 struct 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, mA */
 104         u32 max_torch_intensity;        /* led intensity, torch mode, mA */
 105         u32 max_indicator_intensity;    /* indicator led intensity, uA */
 106
 107         struct gpio_desc *enable_gpio;  /* for device-tree based boot */
 108 };
 109
 110 #define to_adp1653_flash(sd)    container_of(sd, struct adp1653_flash, subdev)
 111
 112 struct adp1653_flash {
 113         struct v4l2_subdev subdev;
 114         struct adp1653_platform_data *platform_data;
 115
 116         struct v4l2_ctrl_handler ctrls;
 117         struct v4l2_ctrl *led_mode;
 118         struct v4l2_ctrl *flash_timeout;
 119         struct v4l2_ctrl *flash_intensity;
 120         struct v4l2_ctrl *torch_intensity;
 121         struct v4l2_ctrl *indicator_intensity;
 122
 123         struct mutex power_lock;
 124         int power_count;
 125         int fault;
 126 };
 127
 128 #endif /* ADP1653_H */