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 */ 124