Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 1 | /* |
| 2 | * Driver for MT9T031 CMOS Image Sensor from Micron |
| 3 | * |
| 4 | * Copyright (C) 2008, Guennadi Liakhovetski, DENX Software Engineering <lg@denx.de> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 as |
| 8 | * published by the Free Software Foundation. |
| 9 | */ |
| 10 | |
Valentin Longchamp | 535653b | 2010-02-09 07:59:12 -0300 | [diff] [blame] | 11 | #include <linux/device.h> |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 12 | #include <linux/i2c.h> |
| 13 | #include <linux/log2.h> |
Valentin Longchamp | 535653b | 2010-02-09 07:59:12 -0300 | [diff] [blame] | 14 | #include <linux/pm.h> |
| 15 | #include <linux/slab.h> |
| 16 | #include <linux/videodev2.h> |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 17 | |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 18 | #include <media/soc_camera.h> |
Valentin Longchamp | 535653b | 2010-02-09 07:59:12 -0300 | [diff] [blame] | 19 | #include <media/v4l2-chip-ident.h> |
| 20 | #include <media/v4l2-subdev.h> |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 21 | |
Guennadi Liakhovetski | 5d28d52 | 2009-12-11 11:15:05 -0300 | [diff] [blame] | 22 | /* |
| 23 | * mt9t031 i2c address 0x5d |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 24 | * The platform has to define i2c_board_info and link to it from |
Guennadi Liakhovetski | 5d28d52 | 2009-12-11 11:15:05 -0300 | [diff] [blame] | 25 | * struct soc_camera_link |
| 26 | */ |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 27 | |
| 28 | /* mt9t031 selected register addresses */ |
| 29 | #define MT9T031_CHIP_VERSION 0x00 |
| 30 | #define MT9T031_ROW_START 0x01 |
| 31 | #define MT9T031_COLUMN_START 0x02 |
| 32 | #define MT9T031_WINDOW_HEIGHT 0x03 |
| 33 | #define MT9T031_WINDOW_WIDTH 0x04 |
| 34 | #define MT9T031_HORIZONTAL_BLANKING 0x05 |
| 35 | #define MT9T031_VERTICAL_BLANKING 0x06 |
| 36 | #define MT9T031_OUTPUT_CONTROL 0x07 |
| 37 | #define MT9T031_SHUTTER_WIDTH_UPPER 0x08 |
| 38 | #define MT9T031_SHUTTER_WIDTH 0x09 |
| 39 | #define MT9T031_PIXEL_CLOCK_CONTROL 0x0a |
| 40 | #define MT9T031_FRAME_RESTART 0x0b |
| 41 | #define MT9T031_SHUTTER_DELAY 0x0c |
| 42 | #define MT9T031_RESET 0x0d |
| 43 | #define MT9T031_READ_MODE_1 0x1e |
| 44 | #define MT9T031_READ_MODE_2 0x20 |
| 45 | #define MT9T031_READ_MODE_3 0x21 |
| 46 | #define MT9T031_ROW_ADDRESS_MODE 0x22 |
| 47 | #define MT9T031_COLUMN_ADDRESS_MODE 0x23 |
| 48 | #define MT9T031_GLOBAL_GAIN 0x35 |
| 49 | #define MT9T031_CHIP_ENABLE 0xF8 |
| 50 | |
| 51 | #define MT9T031_MAX_HEIGHT 1536 |
| 52 | #define MT9T031_MAX_WIDTH 2048 |
| 53 | #define MT9T031_MIN_HEIGHT 2 |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 54 | #define MT9T031_MIN_WIDTH 18 |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 55 | #define MT9T031_HORIZONTAL_BLANK 142 |
| 56 | #define MT9T031_VERTICAL_BLANK 25 |
| 57 | #define MT9T031_COLUMN_SKIP 32 |
| 58 | #define MT9T031_ROW_SKIP 20 |
| 59 | |
| 60 | #define MT9T031_BUS_PARAM (SOCAM_PCLK_SAMPLE_RISING | \ |
| 61 | SOCAM_PCLK_SAMPLE_FALLING | SOCAM_HSYNC_ACTIVE_HIGH | \ |
| 62 | SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_DATA_ACTIVE_HIGH | \ |
| 63 | SOCAM_MASTER | SOCAM_DATAWIDTH_10) |
| 64 | |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 65 | struct mt9t031 { |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 66 | struct v4l2_subdev subdev; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 67 | struct v4l2_rect rect; /* Sensor window */ |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 68 | int model; /* V4L2_IDENT_MT9T031* codes from v4l2-chip-ident.h */ |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 69 | u16 xskip; |
| 70 | u16 yskip; |
Guennadi Liakhovetski | 96c7539 | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 71 | unsigned int gain; |
Guennadi Liakhovetski | 3253610 | 2009-12-11 11:14:46 -0300 | [diff] [blame] | 72 | unsigned short y_skip_top; /* Lines to skip at the top */ |
Guennadi Liakhovetski | 96c7539 | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 73 | unsigned int exposure; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 74 | unsigned char autoexposure; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 75 | }; |
| 76 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 77 | static struct mt9t031 *to_mt9t031(const struct i2c_client *client) |
| 78 | { |
| 79 | return container_of(i2c_get_clientdata(client), struct mt9t031, subdev); |
| 80 | } |
| 81 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 82 | static int reg_read(struct i2c_client *client, const u8 reg) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 83 | { |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 84 | s32 data = i2c_smbus_read_word_data(client, reg); |
| 85 | return data < 0 ? data : swab16(data); |
| 86 | } |
| 87 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 88 | static int reg_write(struct i2c_client *client, const u8 reg, |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 89 | const u16 data) |
| 90 | { |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 91 | return i2c_smbus_write_word_data(client, reg, swab16(data)); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 92 | } |
| 93 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 94 | static int reg_set(struct i2c_client *client, const u8 reg, |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 95 | const u16 data) |
| 96 | { |
| 97 | int ret; |
| 98 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 99 | ret = reg_read(client, reg); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 100 | if (ret < 0) |
| 101 | return ret; |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 102 | return reg_write(client, reg, ret | data); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 103 | } |
| 104 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 105 | static int reg_clear(struct i2c_client *client, const u8 reg, |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 106 | const u16 data) |
| 107 | { |
| 108 | int ret; |
| 109 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 110 | ret = reg_read(client, reg); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 111 | if (ret < 0) |
| 112 | return ret; |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 113 | return reg_write(client, reg, ret & ~data); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 114 | } |
| 115 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 116 | static int set_shutter(struct i2c_client *client, const u32 data) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 117 | { |
| 118 | int ret; |
| 119 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 120 | ret = reg_write(client, MT9T031_SHUTTER_WIDTH_UPPER, data >> 16); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 121 | |
| 122 | if (ret >= 0) |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 123 | ret = reg_write(client, MT9T031_SHUTTER_WIDTH, data & 0xffff); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 124 | |
| 125 | return ret; |
| 126 | } |
| 127 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 128 | static int get_shutter(struct i2c_client *client, u32 *data) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 129 | { |
| 130 | int ret; |
| 131 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 132 | ret = reg_read(client, MT9T031_SHUTTER_WIDTH_UPPER); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 133 | *data = ret << 16; |
| 134 | |
| 135 | if (ret >= 0) |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 136 | ret = reg_read(client, MT9T031_SHUTTER_WIDTH); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 137 | *data |= ret & 0xffff; |
| 138 | |
| 139 | return ret < 0 ? ret : 0; |
| 140 | } |
| 141 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 142 | static int mt9t031_idle(struct i2c_client *client) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 143 | { |
| 144 | int ret; |
| 145 | |
| 146 | /* Disable chip output, synchronous option update */ |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 147 | ret = reg_write(client, MT9T031_RESET, 1); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 148 | if (ret >= 0) |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 149 | ret = reg_write(client, MT9T031_RESET, 0); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 150 | if (ret >= 0) |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 151 | ret = reg_clear(client, MT9T031_OUTPUT_CONTROL, 2); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 152 | |
| 153 | return ret >= 0 ? 0 : -EIO; |
| 154 | } |
| 155 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 156 | static int mt9t031_disable(struct i2c_client *client) |
| 157 | { |
| 158 | /* Disable the chip */ |
| 159 | reg_clear(client, MT9T031_OUTPUT_CONTROL, 2); |
| 160 | |
| 161 | return 0; |
| 162 | } |
| 163 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 164 | static int mt9t031_s_stream(struct v4l2_subdev *sd, int enable) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 165 | { |
Laurent Pinchart | c4ce6d1 | 2010-07-30 17:24:54 -0300 | [diff] [blame] | 166 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 167 | int ret; |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 168 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 169 | if (enable) |
| 170 | /* Switch to master "normal" mode */ |
| 171 | ret = reg_set(client, MT9T031_OUTPUT_CONTROL, 2); |
| 172 | else |
| 173 | /* Stop sensor readout */ |
| 174 | ret = reg_clear(client, MT9T031_OUTPUT_CONTROL, 2); |
| 175 | |
| 176 | if (ret < 0) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 177 | return -EIO; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 178 | |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 179 | return 0; |
| 180 | } |
| 181 | |
| 182 | static int mt9t031_set_bus_param(struct soc_camera_device *icd, |
| 183 | unsigned long flags) |
| 184 | { |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 185 | struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd)); |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 186 | |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 187 | /* The caller should have queried our parameters, check anyway */ |
| 188 | if (flags & ~MT9T031_BUS_PARAM) |
| 189 | return -EINVAL; |
| 190 | |
| 191 | if (flags & SOCAM_PCLK_SAMPLE_FALLING) |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 192 | reg_clear(client, MT9T031_PIXEL_CLOCK_CONTROL, 0x8000); |
Philippe Rétornaz | c98afbf | 2009-03-13 09:42:32 -0300 | [diff] [blame] | 193 | else |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 194 | reg_set(client, MT9T031_PIXEL_CLOCK_CONTROL, 0x8000); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 195 | |
| 196 | return 0; |
| 197 | } |
| 198 | |
| 199 | static unsigned long mt9t031_query_bus_param(struct soc_camera_device *icd) |
| 200 | { |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 201 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 202 | |
| 203 | return soc_camera_apply_sensor_flags(icl, MT9T031_BUS_PARAM); |
| 204 | } |
| 205 | |
Guennadi Liakhovetski | a3a4ac1 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 206 | enum { |
| 207 | MT9T031_CTRL_VFLIP, |
| 208 | MT9T031_CTRL_HFLIP, |
| 209 | MT9T031_CTRL_GAIN, |
| 210 | MT9T031_CTRL_EXPOSURE, |
| 211 | MT9T031_CTRL_EXPOSURE_AUTO, |
| 212 | }; |
| 213 | |
| 214 | static const struct v4l2_queryctrl mt9t031_controls[] = { |
| 215 | [MT9T031_CTRL_VFLIP] = { |
| 216 | .id = V4L2_CID_VFLIP, |
| 217 | .type = V4L2_CTRL_TYPE_BOOLEAN, |
| 218 | .name = "Flip Vertically", |
| 219 | .minimum = 0, |
| 220 | .maximum = 1, |
| 221 | .step = 1, |
| 222 | .default_value = 0, |
| 223 | }, |
| 224 | [MT9T031_CTRL_HFLIP] = { |
| 225 | .id = V4L2_CID_HFLIP, |
| 226 | .type = V4L2_CTRL_TYPE_BOOLEAN, |
| 227 | .name = "Flip Horizontally", |
| 228 | .minimum = 0, |
| 229 | .maximum = 1, |
| 230 | .step = 1, |
| 231 | .default_value = 0, |
| 232 | }, |
| 233 | [MT9T031_CTRL_GAIN] = { |
| 234 | .id = V4L2_CID_GAIN, |
| 235 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 236 | .name = "Gain", |
| 237 | .minimum = 0, |
| 238 | .maximum = 127, |
| 239 | .step = 1, |
| 240 | .default_value = 64, |
| 241 | .flags = V4L2_CTRL_FLAG_SLIDER, |
| 242 | }, |
| 243 | [MT9T031_CTRL_EXPOSURE] = { |
| 244 | .id = V4L2_CID_EXPOSURE, |
| 245 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 246 | .name = "Exposure", |
| 247 | .minimum = 1, |
| 248 | .maximum = 255, |
| 249 | .step = 1, |
| 250 | .default_value = 255, |
| 251 | .flags = V4L2_CTRL_FLAG_SLIDER, |
| 252 | }, |
| 253 | [MT9T031_CTRL_EXPOSURE_AUTO] = { |
| 254 | .id = V4L2_CID_EXPOSURE_AUTO, |
| 255 | .type = V4L2_CTRL_TYPE_BOOLEAN, |
| 256 | .name = "Automatic Exposure", |
| 257 | .minimum = 0, |
| 258 | .maximum = 1, |
| 259 | .step = 1, |
| 260 | .default_value = 1, |
| 261 | } |
| 262 | }; |
| 263 | |
| 264 | static struct soc_camera_ops mt9t031_ops = { |
| 265 | .set_bus_param = mt9t031_set_bus_param, |
| 266 | .query_bus_param = mt9t031_query_bus_param, |
| 267 | .controls = mt9t031_controls, |
| 268 | .num_controls = ARRAY_SIZE(mt9t031_controls), |
| 269 | }; |
| 270 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 271 | /* target must be _even_ */ |
| 272 | static u16 mt9t031_skip(s32 *source, s32 target, s32 max) |
Guennadi Liakhovetski | 70e1d35 | 2009-02-23 12:13:23 -0300 | [diff] [blame] | 273 | { |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 274 | unsigned int skip; |
| 275 | |
| 276 | if (*source < target + target / 2) { |
| 277 | *source = target; |
| 278 | return 1; |
| 279 | } |
| 280 | |
| 281 | skip = min(max, *source + target / 2) / target; |
| 282 | if (skip > 8) |
| 283 | skip = 8; |
| 284 | *source = target * skip; |
| 285 | |
| 286 | return skip; |
Guennadi Liakhovetski | 70e1d35 | 2009-02-23 12:13:23 -0300 | [diff] [blame] | 287 | } |
| 288 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 289 | /* rect is the sensor rectangle, the caller guarantees parameter validity */ |
Guennadi Liakhovetski | a3a4ac1 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 290 | static int mt9t031_set_params(struct i2c_client *client, |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 291 | struct v4l2_rect *rect, u16 xskip, u16 yskip) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 292 | { |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 293 | struct mt9t031 *mt9t031 = to_mt9t031(client); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 294 | int ret; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 295 | u16 xbin, ybin; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 296 | const u16 hblank = MT9T031_HORIZONTAL_BLANK, |
| 297 | vblank = MT9T031_VERTICAL_BLANK; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 298 | |
| 299 | xbin = min(xskip, (u16)3); |
| 300 | ybin = min(yskip, (u16)3); |
| 301 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 302 | /* |
| 303 | * Could just do roundup(rect->left, [xy]bin * 2); but this is cheaper. |
| 304 | * There is always a valid suitably aligned value. The worst case is |
| 305 | * xbin = 3, width = 2048. Then we will start at 36, the last read out |
| 306 | * pixel will be 2083, which is < 2085 - first black pixel. |
| 307 | * |
| 308 | * MT9T031 datasheet imposes window left border alignment, depending on |
| 309 | * the selected xskip. Failing to conform to this requirement produces |
| 310 | * dark horizontal stripes in the image. However, even obeying to this |
| 311 | * requirement doesn't eliminate the stripes in all configurations. They |
| 312 | * appear "locally reproducibly," but can differ between tests under |
| 313 | * different lighting conditions. |
| 314 | */ |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 315 | switch (xbin) { |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 316 | case 1: |
| 317 | rect->left &= ~1; |
| 318 | break; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 319 | case 2: |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 320 | rect->left &= ~3; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 321 | break; |
| 322 | case 3: |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 323 | rect->left = rect->left > roundup(MT9T031_COLUMN_SKIP, 6) ? |
| 324 | (rect->left / 6) * 6 : roundup(MT9T031_COLUMN_SKIP, 6); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 325 | } |
| 326 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 327 | rect->top &= ~1; |
| 328 | |
| 329 | dev_dbg(&client->dev, "skip %u:%u, rect %ux%u@%u:%u\n", |
| 330 | xskip, yskip, rect->width, rect->height, rect->left, rect->top); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 331 | |
Guennadi Liakhovetski | 70e1d35 | 2009-02-23 12:13:23 -0300 | [diff] [blame] | 332 | /* Disable register update, reconfigure atomically */ |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 333 | ret = reg_set(client, MT9T031_OUTPUT_CONTROL, 1); |
Guennadi Liakhovetski | 70e1d35 | 2009-02-23 12:13:23 -0300 | [diff] [blame] | 334 | if (ret < 0) |
| 335 | return ret; |
| 336 | |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 337 | /* Blanking and start values - default... */ |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 338 | ret = reg_write(client, MT9T031_HORIZONTAL_BLANKING, hblank); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 339 | if (ret >= 0) |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 340 | ret = reg_write(client, MT9T031_VERTICAL_BLANKING, vblank); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 341 | |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 342 | if (yskip != mt9t031->yskip || xskip != mt9t031->xskip) { |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 343 | /* Binning, skipping */ |
| 344 | if (ret >= 0) |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 345 | ret = reg_write(client, MT9T031_COLUMN_ADDRESS_MODE, |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 346 | ((xbin - 1) << 4) | (xskip - 1)); |
| 347 | if (ret >= 0) |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 348 | ret = reg_write(client, MT9T031_ROW_ADDRESS_MODE, |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 349 | ((ybin - 1) << 4) | (yskip - 1)); |
| 350 | } |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 351 | dev_dbg(&client->dev, "new physical left %u, top %u\n", |
| 352 | rect->left, rect->top); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 353 | |
Guennadi Liakhovetski | 5d28d52 | 2009-12-11 11:15:05 -0300 | [diff] [blame] | 354 | /* |
| 355 | * The caller provides a supported format, as guaranteed by |
| 356 | * icd->try_fmt_cap(), soc_camera_s_crop() and soc_camera_cropcap() |
| 357 | */ |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 358 | if (ret >= 0) |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 359 | ret = reg_write(client, MT9T031_COLUMN_START, rect->left); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 360 | if (ret >= 0) |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 361 | ret = reg_write(client, MT9T031_ROW_START, rect->top); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 362 | if (ret >= 0) |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 363 | ret = reg_write(client, MT9T031_WINDOW_WIDTH, rect->width - 1); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 364 | if (ret >= 0) |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 365 | ret = reg_write(client, MT9T031_WINDOW_HEIGHT, |
Guennadi Liakhovetski | 3253610 | 2009-12-11 11:14:46 -0300 | [diff] [blame] | 366 | rect->height + mt9t031->y_skip_top - 1); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 367 | if (ret >= 0 && mt9t031->autoexposure) { |
Guennadi Liakhovetski | 3253610 | 2009-12-11 11:14:46 -0300 | [diff] [blame] | 368 | unsigned int total_h = rect->height + mt9t031->y_skip_top + vblank; |
Guennadi Liakhovetski | 96c7539 | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 369 | ret = set_shutter(client, total_h); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 370 | if (ret >= 0) { |
| 371 | const u32 shutter_max = MT9T031_MAX_HEIGHT + vblank; |
| 372 | const struct v4l2_queryctrl *qctrl = |
Guennadi Liakhovetski | a3a4ac1 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 373 | &mt9t031_controls[MT9T031_CTRL_EXPOSURE]; |
Guennadi Liakhovetski | 96c7539 | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 374 | mt9t031->exposure = (shutter_max / 2 + (total_h - 1) * |
| 375 | (qctrl->maximum - qctrl->minimum)) / |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 376 | shutter_max + qctrl->minimum; |
| 377 | } |
| 378 | } |
| 379 | |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 380 | /* Re-enable register update, commit all changes */ |
| 381 | if (ret >= 0) |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 382 | ret = reg_clear(client, MT9T031_OUTPUT_CONTROL, 1); |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 383 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 384 | if (ret >= 0) { |
| 385 | mt9t031->rect = *rect; |
| 386 | mt9t031->xskip = xskip; |
| 387 | mt9t031->yskip = yskip; |
| 388 | } |
| 389 | |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 390 | return ret < 0 ? ret : 0; |
| 391 | } |
| 392 | |
Guennadi Liakhovetski | 08590b9 | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 393 | static int mt9t031_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a) |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 394 | { |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 395 | struct v4l2_rect rect = a->c; |
Laurent Pinchart | c4ce6d1 | 2010-07-30 17:24:54 -0300 | [diff] [blame] | 396 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 397 | struct mt9t031 *mt9t031 = to_mt9t031(client); |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 398 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 399 | rect.width = ALIGN(rect.width, 2); |
| 400 | rect.height = ALIGN(rect.height, 2); |
Guennadi Liakhovetski | e330919 | 2009-08-25 11:46:42 -0300 | [diff] [blame] | 401 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 402 | soc_camera_limit_side(&rect.left, &rect.width, |
| 403 | MT9T031_COLUMN_SKIP, MT9T031_MIN_WIDTH, MT9T031_MAX_WIDTH); |
Guennadi Liakhovetski | e330919 | 2009-08-25 11:46:42 -0300 | [diff] [blame] | 404 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 405 | soc_camera_limit_side(&rect.top, &rect.height, |
| 406 | MT9T031_ROW_SKIP, MT9T031_MIN_HEIGHT, MT9T031_MAX_HEIGHT); |
| 407 | |
Guennadi Liakhovetski | a3a4ac1 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 408 | return mt9t031_set_params(client, &rect, mt9t031->xskip, mt9t031->yskip); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 409 | } |
| 410 | |
| 411 | static int mt9t031_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a) |
| 412 | { |
Laurent Pinchart | c4ce6d1 | 2010-07-30 17:24:54 -0300 | [diff] [blame] | 413 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 414 | struct mt9t031 *mt9t031 = to_mt9t031(client); |
| 415 | |
| 416 | a->c = mt9t031->rect; |
| 417 | a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 418 | |
| 419 | return 0; |
| 420 | } |
| 421 | |
| 422 | static int mt9t031_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a) |
| 423 | { |
| 424 | a->bounds.left = MT9T031_COLUMN_SKIP; |
| 425 | a->bounds.top = MT9T031_ROW_SKIP; |
| 426 | a->bounds.width = MT9T031_MAX_WIDTH; |
| 427 | a->bounds.height = MT9T031_MAX_HEIGHT; |
| 428 | a->defrect = a->bounds; |
| 429 | a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 430 | a->pixelaspect.numerator = 1; |
| 431 | a->pixelaspect.denominator = 1; |
| 432 | |
| 433 | return 0; |
| 434 | } |
| 435 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 436 | static int mt9t031_g_fmt(struct v4l2_subdev *sd, |
| 437 | struct v4l2_mbus_framefmt *mf) |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 438 | { |
Laurent Pinchart | c4ce6d1 | 2010-07-30 17:24:54 -0300 | [diff] [blame] | 439 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 440 | struct mt9t031 *mt9t031 = to_mt9t031(client); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 441 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 442 | mf->width = mt9t031->rect.width / mt9t031->xskip; |
| 443 | mf->height = mt9t031->rect.height / mt9t031->yskip; |
| 444 | mf->code = V4L2_MBUS_FMT_SBGGR10_1X10; |
| 445 | mf->colorspace = V4L2_COLORSPACE_SRGB; |
| 446 | mf->field = V4L2_FIELD_NONE; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 447 | |
| 448 | return 0; |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 449 | } |
| 450 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 451 | static int mt9t031_s_fmt(struct v4l2_subdev *sd, |
| 452 | struct v4l2_mbus_framefmt *mf) |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 453 | { |
Laurent Pinchart | c4ce6d1 | 2010-07-30 17:24:54 -0300 | [diff] [blame] | 454 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 455 | struct mt9t031 *mt9t031 = to_mt9t031(client); |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 456 | u16 xskip, yskip; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 457 | struct v4l2_rect rect = mt9t031->rect; |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 458 | |
| 459 | /* |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 460 | * try_fmt has put width and height within limits. |
| 461 | * S_FMT: use binning and skipping for scaling |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 462 | */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 463 | xskip = mt9t031_skip(&rect.width, mf->width, MT9T031_MAX_WIDTH); |
| 464 | yskip = mt9t031_skip(&rect.height, mf->height, MT9T031_MAX_HEIGHT); |
| 465 | |
| 466 | mf->code = V4L2_MBUS_FMT_SBGGR10_1X10; |
| 467 | mf->colorspace = V4L2_COLORSPACE_SRGB; |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 468 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 469 | /* mt9t031_set_params() doesn't change width and height */ |
Guennadi Liakhovetski | a3a4ac1 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 470 | return mt9t031_set_params(client, &rect, xskip, yskip); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 471 | } |
| 472 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 473 | /* |
| 474 | * If a user window larger than sensor window is requested, we'll increase the |
| 475 | * sensor window. |
| 476 | */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 477 | static int mt9t031_try_fmt(struct v4l2_subdev *sd, |
| 478 | struct v4l2_mbus_framefmt *mf) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 479 | { |
Trent Piepho | 653dc59 | 2009-05-30 21:45:46 -0300 | [diff] [blame] | 480 | v4l_bound_align_image( |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 481 | &mf->width, MT9T031_MIN_WIDTH, MT9T031_MAX_WIDTH, 1, |
| 482 | &mf->height, MT9T031_MIN_HEIGHT, MT9T031_MAX_HEIGHT, 1, 0); |
| 483 | |
| 484 | mf->code = V4L2_MBUS_FMT_SBGGR10_1X10; |
| 485 | mf->colorspace = V4L2_COLORSPACE_SRGB; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 486 | |
| 487 | return 0; |
| 488 | } |
| 489 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 490 | static int mt9t031_g_chip_ident(struct v4l2_subdev *sd, |
| 491 | struct v4l2_dbg_chip_ident *id) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 492 | { |
Laurent Pinchart | c4ce6d1 | 2010-07-30 17:24:54 -0300 | [diff] [blame] | 493 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 494 | struct mt9t031 *mt9t031 = to_mt9t031(client); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 495 | |
Hans Verkuil | aecde8b5 | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 496 | if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 497 | return -EINVAL; |
| 498 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 499 | if (id->match.addr != client->addr) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 500 | return -ENODEV; |
| 501 | |
| 502 | id->ident = mt9t031->model; |
| 503 | id->revision = 0; |
| 504 | |
| 505 | return 0; |
| 506 | } |
| 507 | |
| 508 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 509 | static int mt9t031_g_register(struct v4l2_subdev *sd, |
| 510 | struct v4l2_dbg_register *reg) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 511 | { |
Laurent Pinchart | c4ce6d1 | 2010-07-30 17:24:54 -0300 | [diff] [blame] | 512 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 513 | |
Hans Verkuil | aecde8b5 | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 514 | if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 515 | return -EINVAL; |
| 516 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 517 | if (reg->match.addr != client->addr) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 518 | return -ENODEV; |
| 519 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 520 | reg->val = reg_read(client, reg->reg); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 521 | |
| 522 | if (reg->val > 0xffff) |
| 523 | return -EIO; |
| 524 | |
| 525 | return 0; |
| 526 | } |
| 527 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 528 | static int mt9t031_s_register(struct v4l2_subdev *sd, |
| 529 | struct v4l2_dbg_register *reg) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 530 | { |
Laurent Pinchart | c4ce6d1 | 2010-07-30 17:24:54 -0300 | [diff] [blame] | 531 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 532 | |
Hans Verkuil | aecde8b5 | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 533 | if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 534 | return -EINVAL; |
| 535 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 536 | if (reg->match.addr != client->addr) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 537 | return -ENODEV; |
| 538 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 539 | if (reg_write(client, reg->reg, reg->val) < 0) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 540 | return -EIO; |
| 541 | |
| 542 | return 0; |
| 543 | } |
| 544 | #endif |
| 545 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 546 | static int mt9t031_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 547 | { |
Laurent Pinchart | c4ce6d1 | 2010-07-30 17:24:54 -0300 | [diff] [blame] | 548 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 549 | struct mt9t031 *mt9t031 = to_mt9t031(client); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 550 | int data; |
| 551 | |
| 552 | switch (ctrl->id) { |
| 553 | case V4L2_CID_VFLIP: |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 554 | data = reg_read(client, MT9T031_READ_MODE_2); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 555 | if (data < 0) |
| 556 | return -EIO; |
| 557 | ctrl->value = !!(data & 0x8000); |
| 558 | break; |
| 559 | case V4L2_CID_HFLIP: |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 560 | data = reg_read(client, MT9T031_READ_MODE_2); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 561 | if (data < 0) |
| 562 | return -EIO; |
| 563 | ctrl->value = !!(data & 0x4000); |
| 564 | break; |
| 565 | case V4L2_CID_EXPOSURE_AUTO: |
| 566 | ctrl->value = mt9t031->autoexposure; |
| 567 | break; |
Guennadi Liakhovetski | 96c7539 | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 568 | case V4L2_CID_GAIN: |
| 569 | ctrl->value = mt9t031->gain; |
| 570 | break; |
| 571 | case V4L2_CID_EXPOSURE: |
| 572 | ctrl->value = mt9t031->exposure; |
| 573 | break; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 574 | } |
| 575 | return 0; |
| 576 | } |
| 577 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 578 | static int mt9t031_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 579 | { |
Laurent Pinchart | c4ce6d1 | 2010-07-30 17:24:54 -0300 | [diff] [blame] | 580 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 581 | struct mt9t031 *mt9t031 = to_mt9t031(client); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 582 | const struct v4l2_queryctrl *qctrl; |
| 583 | int data; |
| 584 | |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 585 | switch (ctrl->id) { |
| 586 | case V4L2_CID_VFLIP: |
| 587 | if (ctrl->value) |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 588 | data = reg_set(client, MT9T031_READ_MODE_2, 0x8000); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 589 | else |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 590 | data = reg_clear(client, MT9T031_READ_MODE_2, 0x8000); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 591 | if (data < 0) |
| 592 | return -EIO; |
| 593 | break; |
| 594 | case V4L2_CID_HFLIP: |
| 595 | if (ctrl->value) |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 596 | data = reg_set(client, MT9T031_READ_MODE_2, 0x4000); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 597 | else |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 598 | data = reg_clear(client, MT9T031_READ_MODE_2, 0x4000); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 599 | if (data < 0) |
| 600 | return -EIO; |
| 601 | break; |
| 602 | case V4L2_CID_GAIN: |
Guennadi Liakhovetski | a3a4ac1 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 603 | qctrl = &mt9t031_controls[MT9T031_CTRL_GAIN]; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 604 | if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum) |
| 605 | return -EINVAL; |
| 606 | /* See Datasheet Table 7, Gain settings. */ |
| 607 | if (ctrl->value <= qctrl->default_value) { |
| 608 | /* Pack it into 0..1 step 0.125, register values 0..8 */ |
| 609 | unsigned long range = qctrl->default_value - qctrl->minimum; |
| 610 | data = ((ctrl->value - qctrl->minimum) * 8 + range / 2) / range; |
| 611 | |
Guennadi Liakhovetski | 85f8be6 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 612 | dev_dbg(&client->dev, "Setting gain %d\n", data); |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 613 | data = reg_write(client, MT9T031_GLOBAL_GAIN, data); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 614 | if (data < 0) |
| 615 | return -EIO; |
| 616 | } else { |
Guennadi Liakhovetski | 70e1d35 | 2009-02-23 12:13:23 -0300 | [diff] [blame] | 617 | /* Pack it into 1.125..128 variable step, register values 9..0x7860 */ |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 618 | /* We assume qctrl->maximum - qctrl->default_value - 1 > 0 */ |
| 619 | unsigned long range = qctrl->maximum - qctrl->default_value - 1; |
Guennadi Liakhovetski | 70e1d35 | 2009-02-23 12:13:23 -0300 | [diff] [blame] | 620 | /* calculated gain: map 65..127 to 9..1024 step 0.125 */ |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 621 | unsigned long gain = ((ctrl->value - qctrl->default_value - 1) * |
Guennadi Liakhovetski | 70e1d35 | 2009-02-23 12:13:23 -0300 | [diff] [blame] | 622 | 1015 + range / 2) / range + 9; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 623 | |
Guennadi Liakhovetski | 70e1d35 | 2009-02-23 12:13:23 -0300 | [diff] [blame] | 624 | if (gain <= 32) /* calculated gain 9..32 -> 9..32 */ |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 625 | data = gain; |
Guennadi Liakhovetski | 70e1d35 | 2009-02-23 12:13:23 -0300 | [diff] [blame] | 626 | else if (gain <= 64) /* calculated gain 33..64 -> 0x51..0x60 */ |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 627 | data = ((gain - 32) * 16 + 16) / 32 + 80; |
| 628 | else |
Guennadi Liakhovetski | 70e1d35 | 2009-02-23 12:13:23 -0300 | [diff] [blame] | 629 | /* calculated gain 65..1024 -> (1..120) << 8 + 0x60 */ |
| 630 | data = (((gain - 64 + 7) * 32) & 0xff00) | 0x60; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 631 | |
Guennadi Liakhovetski | 85f8be6 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 632 | dev_dbg(&client->dev, "Set gain from 0x%x to 0x%x\n", |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 633 | reg_read(client, MT9T031_GLOBAL_GAIN), data); |
| 634 | data = reg_write(client, MT9T031_GLOBAL_GAIN, data); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 635 | if (data < 0) |
| 636 | return -EIO; |
| 637 | } |
| 638 | |
| 639 | /* Success */ |
Guennadi Liakhovetski | 96c7539 | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 640 | mt9t031->gain = ctrl->value; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 641 | break; |
| 642 | case V4L2_CID_EXPOSURE: |
Guennadi Liakhovetski | a3a4ac1 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 643 | qctrl = &mt9t031_controls[MT9T031_CTRL_EXPOSURE]; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 644 | /* mt9t031 has maximum == default */ |
| 645 | if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum) |
| 646 | return -EINVAL; |
| 647 | else { |
| 648 | const unsigned long range = qctrl->maximum - qctrl->minimum; |
| 649 | const u32 shutter = ((ctrl->value - qctrl->minimum) * 1048 + |
| 650 | range / 2) / range + 1; |
| 651 | u32 old; |
| 652 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 653 | get_shutter(client, &old); |
Guennadi Liakhovetski | 85f8be6 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 654 | dev_dbg(&client->dev, "Set shutter from %u to %u\n", |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 655 | old, shutter); |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 656 | if (set_shutter(client, shutter) < 0) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 657 | return -EIO; |
Guennadi Liakhovetski | 96c7539 | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 658 | mt9t031->exposure = ctrl->value; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 659 | mt9t031->autoexposure = 0; |
| 660 | } |
| 661 | break; |
| 662 | case V4L2_CID_EXPOSURE_AUTO: |
| 663 | if (ctrl->value) { |
| 664 | const u16 vblank = MT9T031_VERTICAL_BLANK; |
| 665 | const u32 shutter_max = MT9T031_MAX_HEIGHT + vblank; |
Guennadi Liakhovetski | 96c7539 | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 666 | unsigned int total_h = mt9t031->rect.height + |
Guennadi Liakhovetski | 3253610 | 2009-12-11 11:14:46 -0300 | [diff] [blame] | 667 | mt9t031->y_skip_top + vblank; |
Guennadi Liakhovetski | 96c7539 | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 668 | |
| 669 | if (set_shutter(client, total_h) < 0) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 670 | return -EIO; |
Guennadi Liakhovetski | a3a4ac1 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 671 | qctrl = &mt9t031_controls[MT9T031_CTRL_EXPOSURE]; |
Guennadi Liakhovetski | 96c7539 | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 672 | mt9t031->exposure = (shutter_max / 2 + (total_h - 1) * |
| 673 | (qctrl->maximum - qctrl->minimum)) / |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 674 | shutter_max + qctrl->minimum; |
| 675 | mt9t031->autoexposure = 1; |
| 676 | } else |
| 677 | mt9t031->autoexposure = 0; |
| 678 | break; |
Guennadi Liakhovetski | a3a4ac1 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 679 | default: |
| 680 | return -EINVAL; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 681 | } |
| 682 | return 0; |
| 683 | } |
| 684 | |
Guennadi Liakhovetski | 5d28d52 | 2009-12-11 11:15:05 -0300 | [diff] [blame] | 685 | /* |
Valentin Longchamp | 535653b | 2010-02-09 07:59:12 -0300 | [diff] [blame] | 686 | * Power Management: |
| 687 | * This function does nothing for now but must be present for pm to work |
| 688 | */ |
| 689 | static int mt9t031_runtime_suspend(struct device *dev) |
| 690 | { |
| 691 | return 0; |
| 692 | } |
| 693 | |
| 694 | /* |
| 695 | * Power Management: |
| 696 | * COLUMN_ADDRESS_MODE and ROW_ADDRESS_MODE are not rewritten if unchanged |
| 697 | * they are however changed at reset if the platform hook is present |
| 698 | * thus we rewrite them with the values stored by the driver |
| 699 | */ |
| 700 | static int mt9t031_runtime_resume(struct device *dev) |
| 701 | { |
| 702 | struct video_device *vdev = to_video_device(dev); |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 703 | struct soc_camera_device *icd = dev_get_drvdata(vdev->parent); |
Valentin Longchamp | 535653b | 2010-02-09 07:59:12 -0300 | [diff] [blame] | 704 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Laurent Pinchart | c4ce6d1 | 2010-07-30 17:24:54 -0300 | [diff] [blame] | 705 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
Valentin Longchamp | 535653b | 2010-02-09 07:59:12 -0300 | [diff] [blame] | 706 | struct mt9t031 *mt9t031 = to_mt9t031(client); |
| 707 | |
| 708 | int ret; |
| 709 | u16 xbin, ybin; |
| 710 | |
| 711 | xbin = min(mt9t031->xskip, (u16)3); |
| 712 | ybin = min(mt9t031->yskip, (u16)3); |
| 713 | |
| 714 | ret = reg_write(client, MT9T031_COLUMN_ADDRESS_MODE, |
| 715 | ((xbin - 1) << 4) | (mt9t031->xskip - 1)); |
| 716 | if (ret < 0) |
| 717 | return ret; |
| 718 | |
| 719 | ret = reg_write(client, MT9T031_ROW_ADDRESS_MODE, |
| 720 | ((ybin - 1) << 4) | (mt9t031->yskip - 1)); |
| 721 | if (ret < 0) |
| 722 | return ret; |
| 723 | |
| 724 | return 0; |
| 725 | } |
| 726 | |
| 727 | static struct dev_pm_ops mt9t031_dev_pm_ops = { |
| 728 | .runtime_suspend = mt9t031_runtime_suspend, |
| 729 | .runtime_resume = mt9t031_runtime_resume, |
| 730 | }; |
| 731 | |
| 732 | static struct device_type mt9t031_dev_type = { |
| 733 | .name = "MT9T031", |
| 734 | .pm = &mt9t031_dev_pm_ops, |
| 735 | }; |
| 736 | |
| 737 | /* |
Guennadi Liakhovetski | 5d28d52 | 2009-12-11 11:15:05 -0300 | [diff] [blame] | 738 | * Interface active, can use i2c. If it fails, it can indeed mean, that |
| 739 | * this wasn't our capture interface, so, we wait for the right one |
| 740 | */ |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 741 | static int mt9t031_video_probe(struct i2c_client *client) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 742 | { |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 743 | struct mt9t031 *mt9t031 = to_mt9t031(client); |
Valentin Longchamp | 535653b | 2010-02-09 07:59:12 -0300 | [diff] [blame] | 744 | struct video_device *vdev = soc_camera_i2c_to_vdev(client); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 745 | s32 data; |
Guennadi Liakhovetski | a4c56fd | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 746 | int ret; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 747 | |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 748 | /* Enable the chip */ |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 749 | data = reg_write(client, MT9T031_CHIP_ENABLE, 1); |
Guennadi Liakhovetski | 85f8be6 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 750 | dev_dbg(&client->dev, "write: %d\n", data); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 751 | |
| 752 | /* Read out the chip version register */ |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 753 | data = reg_read(client, MT9T031_CHIP_VERSION); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 754 | |
| 755 | switch (data) { |
| 756 | case 0x1621: |
| 757 | mt9t031->model = V4L2_IDENT_MT9T031; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 758 | break; |
| 759 | default: |
Guennadi Liakhovetski | 85f8be6 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 760 | dev_err(&client->dev, |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 761 | "No MT9T031 chip detected, register read %x\n", data); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 762 | return -ENODEV; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 763 | } |
| 764 | |
Guennadi Liakhovetski | 85f8be6 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 765 | dev_info(&client->dev, "Detected a MT9T031 chip ID %x\n", data); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 766 | |
Guennadi Liakhovetski | a4c56fd | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 767 | ret = mt9t031_idle(client); |
| 768 | if (ret < 0) |
| 769 | dev_err(&client->dev, "Failed to initialise the camera\n"); |
Valentin Longchamp | 535653b | 2010-02-09 07:59:12 -0300 | [diff] [blame] | 770 | else |
| 771 | vdev->dev.type = &mt9t031_dev_type; |
Guennadi Liakhovetski | a4c56fd | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 772 | |
Guennadi Liakhovetski | 96c7539 | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 773 | /* mt9t031_idle() has reset the chip to default. */ |
| 774 | mt9t031->exposure = 255; |
| 775 | mt9t031->gain = 64; |
| 776 | |
Guennadi Liakhovetski | a4c56fd | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 777 | return ret; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 778 | } |
| 779 | |
Guennadi Liakhovetski | 3253610 | 2009-12-11 11:14:46 -0300 | [diff] [blame] | 780 | static int mt9t031_g_skip_top_lines(struct v4l2_subdev *sd, u32 *lines) |
| 781 | { |
Laurent Pinchart | c4ce6d1 | 2010-07-30 17:24:54 -0300 | [diff] [blame] | 782 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
Guennadi Liakhovetski | 3253610 | 2009-12-11 11:14:46 -0300 | [diff] [blame] | 783 | struct mt9t031 *mt9t031 = to_mt9t031(client); |
| 784 | |
| 785 | *lines = mt9t031->y_skip_top; |
| 786 | |
| 787 | return 0; |
| 788 | } |
| 789 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 790 | static struct v4l2_subdev_core_ops mt9t031_subdev_core_ops = { |
| 791 | .g_ctrl = mt9t031_g_ctrl, |
| 792 | .s_ctrl = mt9t031_s_ctrl, |
| 793 | .g_chip_ident = mt9t031_g_chip_ident, |
| 794 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
| 795 | .g_register = mt9t031_g_register, |
| 796 | .s_register = mt9t031_s_register, |
| 797 | #endif |
| 798 | }; |
| 799 | |
Hans Verkuil | 3805f20 | 2010-05-08 17:55:00 -0300 | [diff] [blame] | 800 | static int mt9t031_enum_fmt(struct v4l2_subdev *sd, unsigned int index, |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 801 | enum v4l2_mbus_pixelcode *code) |
| 802 | { |
| 803 | if (index) |
| 804 | return -EINVAL; |
| 805 | |
| 806 | *code = V4L2_MBUS_FMT_SBGGR10_1X10; |
| 807 | return 0; |
| 808 | } |
| 809 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 810 | static struct v4l2_subdev_video_ops mt9t031_subdev_video_ops = { |
| 811 | .s_stream = mt9t031_s_stream, |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 812 | .s_mbus_fmt = mt9t031_s_fmt, |
| 813 | .g_mbus_fmt = mt9t031_g_fmt, |
| 814 | .try_mbus_fmt = mt9t031_try_fmt, |
Guennadi Liakhovetski | 08590b9 | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 815 | .s_crop = mt9t031_s_crop, |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 816 | .g_crop = mt9t031_g_crop, |
| 817 | .cropcap = mt9t031_cropcap, |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 818 | .enum_mbus_fmt = mt9t031_enum_fmt, |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 819 | }; |
| 820 | |
Guennadi Liakhovetski | 3253610 | 2009-12-11 11:14:46 -0300 | [diff] [blame] | 821 | static struct v4l2_subdev_sensor_ops mt9t031_subdev_sensor_ops = { |
| 822 | .g_skip_top_lines = mt9t031_g_skip_top_lines, |
| 823 | }; |
| 824 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 825 | static struct v4l2_subdev_ops mt9t031_subdev_ops = { |
| 826 | .core = &mt9t031_subdev_core_ops, |
| 827 | .video = &mt9t031_subdev_video_ops, |
Guennadi Liakhovetski | 3253610 | 2009-12-11 11:14:46 -0300 | [diff] [blame] | 828 | .sensor = &mt9t031_subdev_sensor_ops, |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 829 | }; |
| 830 | |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 831 | static int mt9t031_probe(struct i2c_client *client, |
| 832 | const struct i2c_device_id *did) |
| 833 | { |
| 834 | struct mt9t031 *mt9t031; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 835 | struct soc_camera_device *icd = client->dev.platform_data; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 836 | struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 837 | int ret; |
| 838 | |
Guennadi Liakhovetski | a3a4ac1 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 839 | if (icd) { |
| 840 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
| 841 | if (!icl) { |
| 842 | dev_err(&client->dev, "MT9T031 driver needs platform data\n"); |
| 843 | return -EINVAL; |
| 844 | } |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 845 | |
Guennadi Liakhovetski | a3a4ac1 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 846 | icd->ops = &mt9t031_ops; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 847 | } |
| 848 | |
| 849 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) { |
| 850 | dev_warn(&adapter->dev, |
| 851 | "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n"); |
| 852 | return -EIO; |
| 853 | } |
| 854 | |
| 855 | mt9t031 = kzalloc(sizeof(struct mt9t031), GFP_KERNEL); |
| 856 | if (!mt9t031) |
| 857 | return -ENOMEM; |
| 858 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 859 | v4l2_i2c_subdev_init(&mt9t031->subdev, client, &mt9t031_subdev_ops); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 860 | |
Guennadi Liakhovetski | 3253610 | 2009-12-11 11:14:46 -0300 | [diff] [blame] | 861 | mt9t031->y_skip_top = 0; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 862 | mt9t031->rect.left = MT9T031_COLUMN_SKIP; |
| 863 | mt9t031->rect.top = MT9T031_ROW_SKIP; |
| 864 | mt9t031->rect.width = MT9T031_MAX_WIDTH; |
| 865 | mt9t031->rect.height = MT9T031_MAX_HEIGHT; |
| 866 | |
Guennadi Liakhovetski | 5d28d52 | 2009-12-11 11:15:05 -0300 | [diff] [blame] | 867 | /* |
| 868 | * Simulated autoexposure. If enabled, we calculate shutter width |
| 869 | * ourselves in the driver based on vertical blanking and frame width |
| 870 | */ |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 871 | mt9t031->autoexposure = 1; |
| 872 | |
| 873 | mt9t031->xskip = 1; |
| 874 | mt9t031->yskip = 1; |
| 875 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 876 | mt9t031_idle(client); |
| 877 | |
| 878 | ret = mt9t031_video_probe(client); |
| 879 | |
| 880 | mt9t031_disable(client); |
| 881 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 882 | if (ret) { |
Guennadi Liakhovetski | a3a4ac1 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 883 | if (icd) |
| 884 | icd->ops = NULL; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 885 | kfree(mt9t031); |
| 886 | } |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 887 | |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 888 | return ret; |
| 889 | } |
| 890 | |
| 891 | static int mt9t031_remove(struct i2c_client *client) |
| 892 | { |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 893 | struct mt9t031 *mt9t031 = to_mt9t031(client); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 894 | struct soc_camera_device *icd = client->dev.platform_data; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 895 | |
Guennadi Liakhovetski | a3a4ac1 | 2009-12-11 11:53:53 -0300 | [diff] [blame] | 896 | if (icd) |
| 897 | icd->ops = NULL; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 898 | kfree(mt9t031); |
| 899 | |
| 900 | return 0; |
| 901 | } |
| 902 | |
| 903 | static const struct i2c_device_id mt9t031_id[] = { |
| 904 | { "mt9t031", 0 }, |
| 905 | { } |
| 906 | }; |
| 907 | MODULE_DEVICE_TABLE(i2c, mt9t031_id); |
| 908 | |
| 909 | static struct i2c_driver mt9t031_i2c_driver = { |
| 910 | .driver = { |
| 911 | .name = "mt9t031", |
| 912 | }, |
| 913 | .probe = mt9t031_probe, |
| 914 | .remove = mt9t031_remove, |
| 915 | .id_table = mt9t031_id, |
| 916 | }; |
| 917 | |
| 918 | static int __init mt9t031_mod_init(void) |
| 919 | { |
| 920 | return i2c_add_driver(&mt9t031_i2c_driver); |
| 921 | } |
| 922 | |
| 923 | static void __exit mt9t031_mod_exit(void) |
| 924 | { |
| 925 | i2c_del_driver(&mt9t031_i2c_driver); |
| 926 | } |
| 927 | |
| 928 | module_init(mt9t031_mod_init); |
| 929 | module_exit(mt9t031_mod_exit); |
| 930 | |
| 931 | MODULE_DESCRIPTION("Micron MT9T031 Camera driver"); |
| 932 | MODULE_AUTHOR("Guennadi Liakhovetski <lg@denx.de>"); |
| 933 | MODULE_LICENSE("GPL v2"); |