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 * 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 */ 129