Guennadi Liakhovetski | 7397bfbe | 2008-04-22 14:42:04 -0300 | [diff] [blame] | 1 | /* |
| 2 | * Driver for MT9V022 CMOS Image Sensor from Micron |
| 3 | * |
| 4 | * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.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 | |
| 11 | #include <linux/videodev2.h> |
| 12 | #include <linux/slab.h> |
| 13 | #include <linux/i2c.h> |
| 14 | #include <linux/delay.h> |
| 15 | #include <linux/log2.h> |
| 16 | |
| 17 | #include <media/v4l2-common.h> |
| 18 | #include <media/v4l2-chip-ident.h> |
| 19 | #include <media/soc_camera.h> |
| 20 | |
Guennadi Liakhovetski | ef6ad5c | 2008-04-22 14:42:08 -0300 | [diff] [blame] | 21 | #ifdef CONFIG_MT9M001_PCA9536_SWITCH |
Guennadi Liakhovetski | 7397bfbe | 2008-04-22 14:42:04 -0300 | [diff] [blame] | 22 | #include <asm/gpio.h> |
Guennadi Liakhovetski | ef6ad5c | 2008-04-22 14:42:08 -0300 | [diff] [blame] | 23 | #endif |
Guennadi Liakhovetski | 7397bfbe | 2008-04-22 14:42:04 -0300 | [diff] [blame] | 24 | |
| 25 | /* mt9v022 i2c address 0x48, 0x4c, 0x58, 0x5c |
| 26 | * The platform has to define i2c_board_info |
| 27 | * and call i2c_register_board_info() */ |
| 28 | |
| 29 | static char *sensor_type; |
| 30 | module_param(sensor_type, charp, S_IRUGO); |
| 31 | MODULE_PARM_DESC(sensor_type, "Sensor type: \"colour\" or \"monochrome\"\n"); |
| 32 | |
| 33 | /* mt9v022 selected register addresses */ |
| 34 | #define MT9V022_CHIP_VERSION 0x00 |
| 35 | #define MT9V022_COLUMN_START 0x01 |
| 36 | #define MT9V022_ROW_START 0x02 |
| 37 | #define MT9V022_WINDOW_HEIGHT 0x03 |
| 38 | #define MT9V022_WINDOW_WIDTH 0x04 |
| 39 | #define MT9V022_HORIZONTAL_BLANKING 0x05 |
| 40 | #define MT9V022_VERTICAL_BLANKING 0x06 |
| 41 | #define MT9V022_CHIP_CONTROL 0x07 |
| 42 | #define MT9V022_SHUTTER_WIDTH1 0x08 |
| 43 | #define MT9V022_SHUTTER_WIDTH2 0x09 |
| 44 | #define MT9V022_SHUTTER_WIDTH_CTRL 0x0a |
| 45 | #define MT9V022_TOTAL_SHUTTER_WIDTH 0x0b |
| 46 | #define MT9V022_RESET 0x0c |
| 47 | #define MT9V022_READ_MODE 0x0d |
| 48 | #define MT9V022_MONITOR_MODE 0x0e |
| 49 | #define MT9V022_PIXEL_OPERATION_MODE 0x0f |
| 50 | #define MT9V022_LED_OUT_CONTROL 0x1b |
| 51 | #define MT9V022_ADC_MODE_CONTROL 0x1c |
| 52 | #define MT9V022_ANALOG_GAIN 0x34 |
| 53 | #define MT9V022_BLACK_LEVEL_CALIB_CTRL 0x47 |
| 54 | #define MT9V022_PIXCLK_FV_LV 0x74 |
| 55 | #define MT9V022_DIGITAL_TEST_PATTERN 0x7f |
| 56 | #define MT9V022_AEC_AGC_ENABLE 0xAF |
| 57 | #define MT9V022_MAX_TOTAL_SHUTTER_WIDTH 0xBD |
| 58 | |
| 59 | /* Progressive scan, master, defaults */ |
| 60 | #define MT9V022_CHIP_CONTROL_DEFAULT 0x188 |
| 61 | |
Guennadi Liakhovetski | bb55de3 | 2008-04-22 14:45:13 -0300 | [diff] [blame] | 62 | static const struct soc_camera_data_format mt9v022_colour_formats[] = { |
| 63 | /* Order important: first natively supported, |
| 64 | * second supported with a GPIO extender */ |
Guennadi Liakhovetski | 7397bfbe | 2008-04-22 14:42:04 -0300 | [diff] [blame] | 65 | { |
Guennadi Liakhovetski | bb55de3 | 2008-04-22 14:45:13 -0300 | [diff] [blame] | 66 | .name = "Bayer (sRGB) 10 bit", |
Guennadi Liakhovetski | 7397bfbe | 2008-04-22 14:42:04 -0300 | [diff] [blame] | 67 | .depth = 10, |
| 68 | .fourcc = V4L2_PIX_FMT_SBGGR16, |
| 69 | .colorspace = V4L2_COLORSPACE_SRGB, |
| 70 | }, { |
Guennadi Liakhovetski | bb55de3 | 2008-04-22 14:45:13 -0300 | [diff] [blame] | 71 | .name = "Bayer (sRGB) 8 bit", |
| 72 | .depth = 8, |
| 73 | .fourcc = V4L2_PIX_FMT_SBGGR8, |
| 74 | .colorspace = V4L2_COLORSPACE_SRGB, |
| 75 | } |
| 76 | }; |
| 77 | |
| 78 | static const struct soc_camera_data_format mt9v022_monochrome_formats[] = { |
| 79 | /* Order important - see above */ |
| 80 | { |
Guennadi Liakhovetski | 7397bfbe | 2008-04-22 14:42:04 -0300 | [diff] [blame] | 81 | .name = "Monochrome 10 bit", |
| 82 | .depth = 10, |
| 83 | .fourcc = V4L2_PIX_FMT_Y16, |
| 84 | }, { |
| 85 | .name = "Monochrome 8 bit", |
| 86 | .depth = 8, |
| 87 | .fourcc = V4L2_PIX_FMT_GREY, |
| 88 | }, |
| 89 | }; |
| 90 | |
| 91 | struct mt9v022 { |
| 92 | struct i2c_client *client; |
| 93 | struct soc_camera_device icd; |
| 94 | int model; /* V4L2_IDENT_MT9M001* codes from v4l2-chip-ident.h */ |
| 95 | int switch_gpio; |
| 96 | u16 chip_control; |
| 97 | unsigned char datawidth; |
| 98 | }; |
| 99 | |
| 100 | static int reg_read(struct soc_camera_device *icd, const u8 reg) |
| 101 | { |
| 102 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); |
| 103 | struct i2c_client *client = mt9v022->client; |
| 104 | s32 data = i2c_smbus_read_word_data(client, reg); |
| 105 | return data < 0 ? data : swab16(data); |
| 106 | } |
| 107 | |
| 108 | static int reg_write(struct soc_camera_device *icd, const u8 reg, |
| 109 | const u16 data) |
| 110 | { |
| 111 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); |
| 112 | return i2c_smbus_write_word_data(mt9v022->client, reg, swab16(data)); |
| 113 | } |
| 114 | |
| 115 | static int reg_set(struct soc_camera_device *icd, const u8 reg, |
| 116 | const u16 data) |
| 117 | { |
| 118 | int ret; |
| 119 | |
| 120 | ret = reg_read(icd, reg); |
| 121 | if (ret < 0) |
| 122 | return ret; |
| 123 | return reg_write(icd, reg, ret | data); |
| 124 | } |
| 125 | |
| 126 | static int reg_clear(struct soc_camera_device *icd, const u8 reg, |
| 127 | const u16 data) |
| 128 | { |
| 129 | int ret; |
| 130 | |
| 131 | ret = reg_read(icd, reg); |
| 132 | if (ret < 0) |
| 133 | return ret; |
| 134 | return reg_write(icd, reg, ret & ~data); |
| 135 | } |
| 136 | |
| 137 | static int mt9v022_init(struct soc_camera_device *icd) |
| 138 | { |
| 139 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); |
| 140 | int ret; |
| 141 | |
| 142 | /* Almost the default mode: master, parallel, simultaneous, and an |
| 143 | * undocumented bit 0x200, which is present in table 7, but not in 8, |
| 144 | * plus snapshot mode to disable scan for now */ |
| 145 | mt9v022->chip_control |= 0x10; |
| 146 | ret = reg_write(icd, MT9V022_CHIP_CONTROL, mt9v022->chip_control); |
| 147 | if (ret >= 0) |
| 148 | reg_write(icd, MT9V022_READ_MODE, 0x300); |
| 149 | |
| 150 | /* All defaults */ |
| 151 | if (ret >= 0) |
| 152 | /* AEC, AGC on */ |
| 153 | ret = reg_set(icd, MT9V022_AEC_AGC_ENABLE, 0x3); |
| 154 | if (ret >= 0) |
| 155 | ret = reg_write(icd, MT9V022_MAX_TOTAL_SHUTTER_WIDTH, 480); |
| 156 | if (ret >= 0) |
| 157 | /* default - auto */ |
| 158 | ret = reg_clear(icd, MT9V022_BLACK_LEVEL_CALIB_CTRL, 1); |
| 159 | if (ret >= 0) |
| 160 | ret = reg_write(icd, MT9V022_DIGITAL_TEST_PATTERN, 0); |
| 161 | |
| 162 | return ret >= 0 ? 0 : -EIO; |
| 163 | } |
| 164 | |
| 165 | static int mt9v022_release(struct soc_camera_device *icd) |
| 166 | { |
| 167 | /* Nothing? */ |
| 168 | return 0; |
| 169 | } |
| 170 | |
| 171 | static int mt9v022_start_capture(struct soc_camera_device *icd) |
| 172 | { |
| 173 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); |
| 174 | /* Switch to master "normal" mode */ |
| 175 | mt9v022->chip_control &= ~0x10; |
| 176 | if (reg_write(icd, MT9V022_CHIP_CONTROL, |
| 177 | mt9v022->chip_control) < 0) |
| 178 | return -EIO; |
| 179 | return 0; |
| 180 | } |
| 181 | |
| 182 | static int mt9v022_stop_capture(struct soc_camera_device *icd) |
| 183 | { |
| 184 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); |
| 185 | /* Switch to snapshot mode */ |
| 186 | mt9v022->chip_control |= 0x10; |
| 187 | if (reg_write(icd, MT9V022_CHIP_CONTROL, |
| 188 | mt9v022->chip_control) < 0) |
| 189 | return -EIO; |
| 190 | return 0; |
| 191 | } |
| 192 | |
| 193 | static int bus_switch_request(struct mt9v022 *mt9v022, struct soc_camera_link *icl) |
| 194 | { |
| 195 | #ifdef CONFIG_MT9V022_PCA9536_SWITCH |
| 196 | int ret; |
| 197 | unsigned int gpio = icl->gpio; |
| 198 | |
Guennadi Liakhovetski | b4333a3 | 2008-04-22 14:42:08 -0300 | [diff] [blame] | 199 | if (gpio_is_valid(gpio)) { |
Guennadi Liakhovetski | 7397bfbe | 2008-04-22 14:42:04 -0300 | [diff] [blame] | 200 | /* We have a data bus switch. */ |
| 201 | ret = gpio_request(gpio, "mt9v022"); |
| 202 | if (ret < 0) { |
| 203 | dev_err(&mt9v022->client->dev, "Cannot get GPIO %u\n", gpio); |
| 204 | return ret; |
| 205 | } |
| 206 | |
| 207 | ret = gpio_direction_output(gpio, 0); |
| 208 | if (ret < 0) { |
| 209 | dev_err(&mt9v022->client->dev, |
| 210 | "Cannot set GPIO %u to output\n", gpio); |
| 211 | gpio_free(gpio); |
| 212 | return ret; |
| 213 | } |
| 214 | } |
| 215 | |
| 216 | mt9v022->switch_gpio = gpio; |
| 217 | #else |
Guennadi Liakhovetski | b4333a3 | 2008-04-22 14:42:08 -0300 | [diff] [blame] | 218 | mt9v022->switch_gpio = -EINVAL; |
Guennadi Liakhovetski | 7397bfbe | 2008-04-22 14:42:04 -0300 | [diff] [blame] | 219 | #endif |
| 220 | return 0; |
| 221 | } |
| 222 | |
| 223 | static void bus_switch_release(struct mt9v022 *mt9v022) |
| 224 | { |
| 225 | #ifdef CONFIG_MT9V022_PCA9536_SWITCH |
Guennadi Liakhovetski | b4333a3 | 2008-04-22 14:42:08 -0300 | [diff] [blame] | 226 | if (gpio_is_valid(mt9v022->switch_gpio)) |
Guennadi Liakhovetski | 7397bfbe | 2008-04-22 14:42:04 -0300 | [diff] [blame] | 227 | gpio_free(mt9v022->switch_gpio); |
| 228 | #endif |
| 229 | } |
| 230 | |
| 231 | static int bus_switch_act(struct mt9v022 *mt9v022, int go8bit) |
| 232 | { |
| 233 | #ifdef CONFIG_MT9V022_PCA9536_SWITCH |
Guennadi Liakhovetski | b4333a3 | 2008-04-22 14:42:08 -0300 | [diff] [blame] | 234 | if (!gpio_is_valid(mt9v022->switch_gpio)) |
Guennadi Liakhovetski | 7397bfbe | 2008-04-22 14:42:04 -0300 | [diff] [blame] | 235 | return -ENODEV; |
| 236 | |
| 237 | gpio_set_value_cansleep(mt9v022->switch_gpio, go8bit); |
| 238 | return 0; |
| 239 | #else |
| 240 | return -ENODEV; |
| 241 | #endif |
| 242 | } |
| 243 | |
Guennadi Liakhovetski | ad5f2e8 | 2008-03-07 21:57:18 -0300 | [diff] [blame] | 244 | static int bus_switch_possible(struct mt9v022 *mt9v022) |
| 245 | { |
| 246 | #ifdef CONFIG_MT9V022_PCA9536_SWITCH |
| 247 | return gpio_is_valid(mt9v022->switch_gpio); |
| 248 | #else |
| 249 | return 0; |
| 250 | #endif |
| 251 | } |
| 252 | |
| 253 | static int mt9v022_set_bus_param(struct soc_camera_device *icd, |
| 254 | unsigned long flags) |
Guennadi Liakhovetski | 7397bfbe | 2008-04-22 14:42:04 -0300 | [diff] [blame] | 255 | { |
| 256 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); |
Guennadi Liakhovetski | ad5f2e8 | 2008-03-07 21:57:18 -0300 | [diff] [blame] | 257 | unsigned int width_flag = flags & SOCAM_DATAWIDTH_MASK; |
Guennadi Liakhovetski | 7397bfbe | 2008-04-22 14:42:04 -0300 | [diff] [blame] | 258 | int ret; |
Guennadi Liakhovetski | ad5f2e8 | 2008-03-07 21:57:18 -0300 | [diff] [blame] | 259 | u16 pixclk = 0; |
Guennadi Liakhovetski | 7397bfbe | 2008-04-22 14:42:04 -0300 | [diff] [blame] | 260 | |
| 261 | /* Only one width bit may be set */ |
| 262 | if (!is_power_of_2(width_flag)) |
| 263 | return -EINVAL; |
| 264 | |
Guennadi Liakhovetski | ad5f2e8 | 2008-03-07 21:57:18 -0300 | [diff] [blame] | 265 | if ((mt9v022->datawidth != 10 && (width_flag == SOCAM_DATAWIDTH_10)) || |
| 266 | (mt9v022->datawidth != 9 && (width_flag == SOCAM_DATAWIDTH_9)) || |
| 267 | (mt9v022->datawidth != 8 && (width_flag == SOCAM_DATAWIDTH_8))) { |
| 268 | /* Well, we actually only can do 10 or 8 bits... */ |
| 269 | if (width_flag == SOCAM_DATAWIDTH_9) |
| 270 | return -EINVAL; |
| 271 | |
| 272 | ret = bus_switch_act(mt9v022, |
| 273 | width_flag == SOCAM_DATAWIDTH_8); |
| 274 | if (ret < 0) |
| 275 | return ret; |
| 276 | |
| 277 | mt9v022->datawidth = width_flag == SOCAM_DATAWIDTH_8 ? 8 : 10; |
| 278 | } |
| 279 | |
| 280 | if (flags & SOCAM_PCLK_SAMPLE_RISING) |
| 281 | pixclk |= 0x10; |
| 282 | |
| 283 | if (!(flags & SOCAM_HSYNC_ACTIVE_HIGH)) |
| 284 | pixclk |= 0x1; |
| 285 | |
| 286 | if (!(flags & SOCAM_VSYNC_ACTIVE_HIGH)) |
| 287 | pixclk |= 0x2; |
| 288 | |
| 289 | ret = reg_write(icd, MT9V022_PIXCLK_FV_LV, pixclk); |
| 290 | if (ret < 0) |
| 291 | return ret; |
| 292 | |
| 293 | if (!(flags & SOCAM_MASTER)) |
| 294 | mt9v022->chip_control &= ~0x8; |
| 295 | |
| 296 | ret = reg_write(icd, MT9V022_CHIP_CONTROL, mt9v022->chip_control); |
| 297 | if (ret < 0) |
| 298 | return ret; |
| 299 | |
| 300 | dev_dbg(&icd->dev, "Calculated pixclk 0x%x, chip control 0x%x\n", |
| 301 | pixclk, mt9v022->chip_control); |
| 302 | |
| 303 | return 0; |
| 304 | } |
| 305 | |
| 306 | static unsigned long mt9v022_query_bus_param(struct soc_camera_device *icd) |
| 307 | { |
| 308 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); |
| 309 | unsigned int width_flag = SOCAM_DATAWIDTH_10; |
| 310 | |
| 311 | if (bus_switch_possible(mt9v022)) |
| 312 | width_flag |= SOCAM_DATAWIDTH_8; |
| 313 | |
| 314 | return SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING | |
| 315 | SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_LOW | |
| 316 | SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_LOW | |
| 317 | SOCAM_MASTER | SOCAM_SLAVE | |
| 318 | width_flag; |
| 319 | } |
| 320 | |
| 321 | static int mt9v022_set_fmt_cap(struct soc_camera_device *icd, |
| 322 | __u32 pixfmt, struct v4l2_rect *rect) |
| 323 | { |
| 324 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); |
| 325 | int ret; |
| 326 | |
Guennadi Liakhovetski | 7397bfbe | 2008-04-22 14:42:04 -0300 | [diff] [blame] | 327 | /* The caller provides a supported format, as verified per call to |
| 328 | * icd->try_fmt_cap(), datawidth is from our supported format list */ |
| 329 | switch (pixfmt) { |
| 330 | case V4L2_PIX_FMT_GREY: |
| 331 | case V4L2_PIX_FMT_Y16: |
| 332 | if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATM) |
| 333 | return -EINVAL; |
| 334 | break; |
| 335 | case V4L2_PIX_FMT_SBGGR8: |
| 336 | case V4L2_PIX_FMT_SBGGR16: |
| 337 | if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATC) |
| 338 | return -EINVAL; |
| 339 | break; |
| 340 | case 0: |
| 341 | /* No format change, only geometry */ |
| 342 | break; |
| 343 | default: |
| 344 | return -EINVAL; |
| 345 | } |
| 346 | |
| 347 | /* Like in example app. Contradicts the datasheet though */ |
| 348 | ret = reg_read(icd, MT9V022_AEC_AGC_ENABLE); |
| 349 | if (ret >= 0) { |
| 350 | if (ret & 1) /* Autoexposure */ |
| 351 | ret = reg_write(icd, MT9V022_MAX_TOTAL_SHUTTER_WIDTH, |
| 352 | rect->height + icd->y_skip_top + 43); |
| 353 | else |
| 354 | ret = reg_write(icd, MT9V022_TOTAL_SHUTTER_WIDTH, |
| 355 | rect->height + icd->y_skip_top + 43); |
| 356 | } |
| 357 | /* Setup frame format: defaults apart from width and height */ |
| 358 | if (ret >= 0) |
| 359 | ret = reg_write(icd, MT9V022_COLUMN_START, rect->left); |
| 360 | if (ret >= 0) |
| 361 | ret = reg_write(icd, MT9V022_ROW_START, rect->top); |
| 362 | if (ret >= 0) |
| 363 | /* Default 94, Phytec driver says: |
| 364 | * "width + horizontal blank >= 660" */ |
| 365 | ret = reg_write(icd, MT9V022_HORIZONTAL_BLANKING, |
| 366 | rect->width > 660 - 43 ? 43 : |
| 367 | 660 - rect->width); |
| 368 | if (ret >= 0) |
| 369 | ret = reg_write(icd, MT9V022_VERTICAL_BLANKING, 45); |
| 370 | if (ret >= 0) |
| 371 | ret = reg_write(icd, MT9V022_WINDOW_WIDTH, rect->width); |
| 372 | if (ret >= 0) |
| 373 | ret = reg_write(icd, MT9V022_WINDOW_HEIGHT, |
| 374 | rect->height + icd->y_skip_top); |
| 375 | |
| 376 | if (ret < 0) |
| 377 | return ret; |
| 378 | |
| 379 | dev_dbg(&icd->dev, "Frame %ux%u pixel\n", rect->width, rect->height); |
| 380 | |
Guennadi Liakhovetski | 7397bfbe | 2008-04-22 14:42:04 -0300 | [diff] [blame] | 381 | return 0; |
| 382 | } |
| 383 | |
| 384 | static int mt9v022_try_fmt_cap(struct soc_camera_device *icd, |
| 385 | struct v4l2_format *f) |
| 386 | { |
| 387 | if (f->fmt.pix.height < 32 + icd->y_skip_top) |
| 388 | f->fmt.pix.height = 32 + icd->y_skip_top; |
| 389 | if (f->fmt.pix.height > 480 + icd->y_skip_top) |
| 390 | f->fmt.pix.height = 480 + icd->y_skip_top; |
| 391 | if (f->fmt.pix.width < 48) |
| 392 | f->fmt.pix.width = 48; |
| 393 | if (f->fmt.pix.width > 752) |
| 394 | f->fmt.pix.width = 752; |
| 395 | f->fmt.pix.width &= ~0x03; /* ? */ |
| 396 | |
| 397 | return 0; |
| 398 | } |
| 399 | |
| 400 | static int mt9v022_get_chip_id(struct soc_camera_device *icd, |
| 401 | struct v4l2_chip_ident *id) |
| 402 | { |
| 403 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); |
| 404 | |
| 405 | if (id->match_type != V4L2_CHIP_MATCH_I2C_ADDR) |
| 406 | return -EINVAL; |
| 407 | |
| 408 | if (id->match_chip != mt9v022->client->addr) |
| 409 | return -ENODEV; |
| 410 | |
| 411 | id->ident = mt9v022->model; |
| 412 | id->revision = 0; |
| 413 | |
| 414 | return 0; |
| 415 | } |
| 416 | |
| 417 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
| 418 | static int mt9v022_get_register(struct soc_camera_device *icd, |
| 419 | struct v4l2_register *reg) |
| 420 | { |
| 421 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); |
| 422 | |
| 423 | if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff) |
| 424 | return -EINVAL; |
| 425 | |
| 426 | if (reg->match_chip != mt9v022->client->addr) |
| 427 | return -ENODEV; |
| 428 | |
| 429 | reg->val = reg_read(icd, reg->reg); |
| 430 | |
| 431 | if (reg->val > 0xffff) |
| 432 | return -EIO; |
| 433 | |
| 434 | return 0; |
| 435 | } |
| 436 | |
| 437 | static int mt9v022_set_register(struct soc_camera_device *icd, |
| 438 | struct v4l2_register *reg) |
| 439 | { |
| 440 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); |
| 441 | |
| 442 | if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff) |
| 443 | return -EINVAL; |
| 444 | |
| 445 | if (reg->match_chip != mt9v022->client->addr) |
| 446 | return -ENODEV; |
| 447 | |
| 448 | if (reg_write(icd, reg->reg, reg->val) < 0) |
| 449 | return -EIO; |
| 450 | |
| 451 | return 0; |
| 452 | } |
| 453 | #endif |
| 454 | |
Guennadi Liakhovetski | 7397bfbe | 2008-04-22 14:42:04 -0300 | [diff] [blame] | 455 | const struct v4l2_queryctrl mt9v022_controls[] = { |
| 456 | { |
| 457 | .id = V4L2_CID_VFLIP, |
| 458 | .type = V4L2_CTRL_TYPE_BOOLEAN, |
| 459 | .name = "Flip Vertically", |
| 460 | .minimum = 0, |
| 461 | .maximum = 1, |
| 462 | .step = 1, |
| 463 | .default_value = 0, |
| 464 | }, { |
| 465 | .id = V4L2_CID_HFLIP, |
| 466 | .type = V4L2_CTRL_TYPE_BOOLEAN, |
| 467 | .name = "Flip Horizontally", |
| 468 | .minimum = 0, |
| 469 | .maximum = 1, |
| 470 | .step = 1, |
| 471 | .default_value = 0, |
| 472 | }, { |
| 473 | .id = V4L2_CID_GAIN, |
| 474 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 475 | .name = "Analog Gain", |
| 476 | .minimum = 64, |
| 477 | .maximum = 127, |
| 478 | .step = 1, |
| 479 | .default_value = 64, |
| 480 | .flags = V4L2_CTRL_FLAG_SLIDER, |
| 481 | }, { |
| 482 | .id = V4L2_CID_EXPOSURE, |
| 483 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 484 | .name = "Exposure", |
| 485 | .minimum = 1, |
| 486 | .maximum = 255, |
| 487 | .step = 1, |
| 488 | .default_value = 255, |
| 489 | .flags = V4L2_CTRL_FLAG_SLIDER, |
| 490 | }, { |
| 491 | .id = V4L2_CID_AUTOGAIN, |
| 492 | .type = V4L2_CTRL_TYPE_BOOLEAN, |
| 493 | .name = "Automatic Gain", |
| 494 | .minimum = 0, |
| 495 | .maximum = 1, |
| 496 | .step = 1, |
| 497 | .default_value = 1, |
| 498 | }, { |
| 499 | .id = V4L2_CID_EXPOSURE_AUTO, |
| 500 | .type = V4L2_CTRL_TYPE_BOOLEAN, |
| 501 | .name = "Automatic Exposure", |
| 502 | .minimum = 0, |
| 503 | .maximum = 1, |
| 504 | .step = 1, |
| 505 | .default_value = 1, |
| 506 | } |
| 507 | }; |
| 508 | |
Guennadi Liakhovetski | 26f1b94 | 2008-03-24 12:18:36 -0300 | [diff] [blame] | 509 | static int mt9v022_video_probe(struct soc_camera_device *); |
| 510 | static void mt9v022_video_remove(struct soc_camera_device *); |
| 511 | static int mt9v022_get_control(struct soc_camera_device *, struct v4l2_control *); |
| 512 | static int mt9v022_set_control(struct soc_camera_device *, struct v4l2_control *); |
Guennadi Liakhovetski | 7397bfbe | 2008-04-22 14:42:04 -0300 | [diff] [blame] | 513 | |
| 514 | static struct soc_camera_ops mt9v022_ops = { |
| 515 | .owner = THIS_MODULE, |
Guennadi Liakhovetski | 26f1b94 | 2008-03-24 12:18:36 -0300 | [diff] [blame] | 516 | .probe = mt9v022_video_probe, |
| 517 | .remove = mt9v022_video_remove, |
Guennadi Liakhovetski | 7397bfbe | 2008-04-22 14:42:04 -0300 | [diff] [blame] | 518 | .init = mt9v022_init, |
| 519 | .release = mt9v022_release, |
| 520 | .start_capture = mt9v022_start_capture, |
| 521 | .stop_capture = mt9v022_stop_capture, |
Guennadi Liakhovetski | ad5f2e8 | 2008-03-07 21:57:18 -0300 | [diff] [blame] | 522 | .set_fmt_cap = mt9v022_set_fmt_cap, |
Guennadi Liakhovetski | 7397bfbe | 2008-04-22 14:42:04 -0300 | [diff] [blame] | 523 | .try_fmt_cap = mt9v022_try_fmt_cap, |
Guennadi Liakhovetski | ad5f2e8 | 2008-03-07 21:57:18 -0300 | [diff] [blame] | 524 | .set_bus_param = mt9v022_set_bus_param, |
| 525 | .query_bus_param = mt9v022_query_bus_param, |
Guennadi Liakhovetski | 7397bfbe | 2008-04-22 14:42:04 -0300 | [diff] [blame] | 526 | .controls = mt9v022_controls, |
| 527 | .num_controls = ARRAY_SIZE(mt9v022_controls), |
| 528 | .get_control = mt9v022_get_control, |
| 529 | .set_control = mt9v022_set_control, |
| 530 | .get_chip_id = mt9v022_get_chip_id, |
| 531 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
| 532 | .get_register = mt9v022_get_register, |
| 533 | .set_register = mt9v022_set_register, |
| 534 | #endif |
| 535 | }; |
| 536 | |
| 537 | static int mt9v022_get_control(struct soc_camera_device *icd, |
| 538 | struct v4l2_control *ctrl) |
| 539 | { |
| 540 | int data; |
| 541 | |
| 542 | switch (ctrl->id) { |
| 543 | case V4L2_CID_VFLIP: |
| 544 | data = reg_read(icd, MT9V022_READ_MODE); |
| 545 | if (data < 0) |
| 546 | return -EIO; |
| 547 | ctrl->value = !!(data & 0x10); |
| 548 | break; |
| 549 | case V4L2_CID_HFLIP: |
| 550 | data = reg_read(icd, MT9V022_READ_MODE); |
| 551 | if (data < 0) |
| 552 | return -EIO; |
| 553 | ctrl->value = !!(data & 0x20); |
| 554 | break; |
| 555 | case V4L2_CID_EXPOSURE_AUTO: |
| 556 | data = reg_read(icd, MT9V022_AEC_AGC_ENABLE); |
| 557 | if (data < 0) |
| 558 | return -EIO; |
| 559 | ctrl->value = !!(data & 0x1); |
| 560 | break; |
| 561 | case V4L2_CID_AUTOGAIN: |
| 562 | data = reg_read(icd, MT9V022_AEC_AGC_ENABLE); |
| 563 | if (data < 0) |
| 564 | return -EIO; |
| 565 | ctrl->value = !!(data & 0x2); |
| 566 | break; |
| 567 | } |
| 568 | return 0; |
| 569 | } |
| 570 | |
| 571 | static int mt9v022_set_control(struct soc_camera_device *icd, |
| 572 | struct v4l2_control *ctrl) |
| 573 | { |
| 574 | int data; |
| 575 | const struct v4l2_queryctrl *qctrl; |
| 576 | |
| 577 | qctrl = soc_camera_find_qctrl(&mt9v022_ops, ctrl->id); |
| 578 | |
| 579 | if (!qctrl) |
| 580 | return -EINVAL; |
| 581 | |
| 582 | switch (ctrl->id) { |
| 583 | case V4L2_CID_VFLIP: |
| 584 | if (ctrl->value) |
| 585 | data = reg_set(icd, MT9V022_READ_MODE, 0x10); |
| 586 | else |
| 587 | data = reg_clear(icd, MT9V022_READ_MODE, 0x10); |
| 588 | if (data < 0) |
| 589 | return -EIO; |
| 590 | break; |
| 591 | case V4L2_CID_HFLIP: |
| 592 | if (ctrl->value) |
| 593 | data = reg_set(icd, MT9V022_READ_MODE, 0x20); |
| 594 | else |
| 595 | data = reg_clear(icd, MT9V022_READ_MODE, 0x20); |
| 596 | if (data < 0) |
| 597 | return -EIO; |
| 598 | break; |
| 599 | case V4L2_CID_GAIN: |
| 600 | /* mt9v022 has minimum == default */ |
| 601 | if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum) |
| 602 | return -EINVAL; |
| 603 | else { |
| 604 | unsigned long range = qctrl->maximum - qctrl->minimum; |
| 605 | /* Datasheet says 16 to 64. autogain only works properly |
| 606 | * after setting gain to maximum 14. Larger values |
| 607 | * produce "white fly" noise effect. On the whole, |
| 608 | * manually setting analog gain does no good. */ |
| 609 | unsigned long gain = ((ctrl->value - qctrl->minimum) * |
| 610 | 10 + range / 2) / range + 4; |
| 611 | if (gain >= 32) |
| 612 | gain &= ~1; |
| 613 | /* The user wants to set gain manually, hope, she |
| 614 | * knows, what she's doing... Switch AGC off. */ |
| 615 | |
| 616 | if (reg_clear(icd, MT9V022_AEC_AGC_ENABLE, 0x2) < 0) |
| 617 | return -EIO; |
| 618 | |
| 619 | dev_info(&icd->dev, "Setting gain from %d to %lu\n", |
| 620 | reg_read(icd, MT9V022_ANALOG_GAIN), gain); |
| 621 | if (reg_write(icd, MT9V022_ANALOG_GAIN, gain) < 0) |
| 622 | return -EIO; |
| 623 | icd->gain = ctrl->value; |
| 624 | } |
| 625 | break; |
| 626 | case V4L2_CID_EXPOSURE: |
| 627 | /* mt9v022 has maximum == default */ |
| 628 | if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum) |
| 629 | return -EINVAL; |
| 630 | else { |
| 631 | unsigned long range = qctrl->maximum - qctrl->minimum; |
| 632 | unsigned long shutter = ((ctrl->value - qctrl->minimum) * |
| 633 | 479 + range / 2) / range + 1; |
| 634 | /* The user wants to set shutter width manually, hope, |
| 635 | * she knows, what she's doing... Switch AEC off. */ |
| 636 | |
| 637 | if (reg_clear(icd, MT9V022_AEC_AGC_ENABLE, 0x1) < 0) |
| 638 | return -EIO; |
| 639 | |
| 640 | dev_dbg(&icd->dev, "Shutter width from %d to %lu\n", |
| 641 | reg_read(icd, MT9V022_TOTAL_SHUTTER_WIDTH), |
| 642 | shutter); |
| 643 | if (reg_write(icd, MT9V022_TOTAL_SHUTTER_WIDTH, |
| 644 | shutter) < 0) |
| 645 | return -EIO; |
| 646 | icd->exposure = ctrl->value; |
| 647 | } |
| 648 | break; |
| 649 | case V4L2_CID_AUTOGAIN: |
| 650 | if (ctrl->value) |
| 651 | data = reg_set(icd, MT9V022_AEC_AGC_ENABLE, 0x2); |
| 652 | else |
| 653 | data = reg_clear(icd, MT9V022_AEC_AGC_ENABLE, 0x2); |
| 654 | if (data < 0) |
| 655 | return -EIO; |
| 656 | break; |
| 657 | case V4L2_CID_EXPOSURE_AUTO: |
| 658 | if (ctrl->value) |
| 659 | data = reg_set(icd, MT9V022_AEC_AGC_ENABLE, 0x1); |
| 660 | else |
| 661 | data = reg_clear(icd, MT9V022_AEC_AGC_ENABLE, 0x1); |
| 662 | if (data < 0) |
| 663 | return -EIO; |
| 664 | break; |
| 665 | } |
| 666 | return 0; |
| 667 | } |
| 668 | |
| 669 | /* Interface active, can use i2c. If it fails, it can indeed mean, that |
| 670 | * this wasn't our capture interface, so, we wait for the right one */ |
| 671 | static int mt9v022_video_probe(struct soc_camera_device *icd) |
| 672 | { |
| 673 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); |
| 674 | s32 data; |
| 675 | int ret; |
| 676 | |
| 677 | if (!icd->dev.parent || |
| 678 | to_soc_camera_host(icd->dev.parent)->nr != icd->iface) |
| 679 | return -ENODEV; |
| 680 | |
| 681 | /* Read out the chip version register */ |
| 682 | data = reg_read(icd, MT9V022_CHIP_VERSION); |
| 683 | |
| 684 | /* must be 0x1311 or 0x1313 */ |
| 685 | if (data != 0x1311 && data != 0x1313) { |
| 686 | ret = -ENODEV; |
| 687 | dev_info(&icd->dev, "No MT9V022 detected, ID register 0x%x\n", |
| 688 | data); |
| 689 | goto ei2c; |
| 690 | } |
| 691 | |
| 692 | /* Soft reset */ |
| 693 | ret = reg_write(icd, MT9V022_RESET, 1); |
| 694 | if (ret < 0) |
| 695 | goto ei2c; |
| 696 | /* 15 clock cycles */ |
| 697 | udelay(200); |
| 698 | if (reg_read(icd, MT9V022_RESET)) { |
| 699 | dev_err(&icd->dev, "Resetting MT9V022 failed!\n"); |
| 700 | goto ei2c; |
| 701 | } |
| 702 | |
| 703 | /* Set monochrome or colour sensor type */ |
| 704 | if (sensor_type && (!strcmp("colour", sensor_type) || |
| 705 | !strcmp("color", sensor_type))) { |
| 706 | ret = reg_write(icd, MT9V022_PIXEL_OPERATION_MODE, 4 | 0x11); |
| 707 | mt9v022->model = V4L2_IDENT_MT9V022IX7ATC; |
Guennadi Liakhovetski | 26f1b94 | 2008-03-24 12:18:36 -0300 | [diff] [blame] | 708 | icd->formats = mt9v022_colour_formats; |
Guennadi Liakhovetski | bb55de3 | 2008-04-22 14:45:13 -0300 | [diff] [blame] | 709 | if (mt9v022->client->dev.platform_data) |
Guennadi Liakhovetski | 26f1b94 | 2008-03-24 12:18:36 -0300 | [diff] [blame] | 710 | icd->num_formats = ARRAY_SIZE(mt9v022_colour_formats); |
Guennadi Liakhovetski | bb55de3 | 2008-04-22 14:45:13 -0300 | [diff] [blame] | 711 | else |
Guennadi Liakhovetski | 26f1b94 | 2008-03-24 12:18:36 -0300 | [diff] [blame] | 712 | icd->num_formats = 1; |
Guennadi Liakhovetski | 7397bfbe | 2008-04-22 14:42:04 -0300 | [diff] [blame] | 713 | } else { |
| 714 | ret = reg_write(icd, MT9V022_PIXEL_OPERATION_MODE, 0x11); |
| 715 | mt9v022->model = V4L2_IDENT_MT9V022IX7ATM; |
Guennadi Liakhovetski | 26f1b94 | 2008-03-24 12:18:36 -0300 | [diff] [blame] | 716 | icd->formats = mt9v022_monochrome_formats; |
Guennadi Liakhovetski | bb55de3 | 2008-04-22 14:45:13 -0300 | [diff] [blame] | 717 | if (mt9v022->client->dev.platform_data) |
Guennadi Liakhovetski | 26f1b94 | 2008-03-24 12:18:36 -0300 | [diff] [blame] | 718 | icd->num_formats = ARRAY_SIZE(mt9v022_monochrome_formats); |
Guennadi Liakhovetski | bb55de3 | 2008-04-22 14:45:13 -0300 | [diff] [blame] | 719 | else |
Guennadi Liakhovetski | 26f1b94 | 2008-03-24 12:18:36 -0300 | [diff] [blame] | 720 | icd->num_formats = 1; |
Guennadi Liakhovetski | 7397bfbe | 2008-04-22 14:42:04 -0300 | [diff] [blame] | 721 | } |
| 722 | |
| 723 | if (ret >= 0) |
| 724 | ret = soc_camera_video_start(icd); |
| 725 | if (ret < 0) |
| 726 | goto eisis; |
| 727 | |
| 728 | dev_info(&icd->dev, "Detected a MT9V022 chip ID %x, %s sensor\n", |
| 729 | data, mt9v022->model == V4L2_IDENT_MT9V022IX7ATM ? |
| 730 | "monochrome" : "colour"); |
| 731 | |
| 732 | return 0; |
| 733 | |
| 734 | eisis: |
| 735 | ei2c: |
| 736 | return ret; |
| 737 | } |
| 738 | |
| 739 | static void mt9v022_video_remove(struct soc_camera_device *icd) |
| 740 | { |
| 741 | struct mt9v022 *mt9v022 = container_of(icd, struct mt9v022, icd); |
| 742 | |
| 743 | dev_dbg(&icd->dev, "Video %x removed: %p, %p\n", mt9v022->client->addr, |
| 744 | mt9v022->icd.dev.parent, mt9v022->icd.vdev); |
| 745 | soc_camera_video_stop(&mt9v022->icd); |
| 746 | } |
| 747 | |
Jean Delvare | d2653e9 | 2008-04-29 23:11:39 +0200 | [diff] [blame] | 748 | static int mt9v022_probe(struct i2c_client *client, |
| 749 | const struct i2c_device_id *did) |
Guennadi Liakhovetski | 7397bfbe | 2008-04-22 14:42:04 -0300 | [diff] [blame] | 750 | { |
| 751 | struct mt9v022 *mt9v022; |
| 752 | struct soc_camera_device *icd; |
| 753 | struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); |
| 754 | struct soc_camera_link *icl = client->dev.platform_data; |
| 755 | int ret; |
| 756 | |
| 757 | if (!icl) { |
| 758 | dev_err(&client->dev, "MT9V022 driver needs platform data\n"); |
| 759 | return -EINVAL; |
| 760 | } |
| 761 | |
| 762 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) { |
| 763 | dev_warn(&adapter->dev, |
| 764 | "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n"); |
| 765 | return -EIO; |
| 766 | } |
| 767 | |
| 768 | mt9v022 = kzalloc(sizeof(struct mt9v022), GFP_KERNEL); |
| 769 | if (!mt9v022) |
| 770 | return -ENOMEM; |
| 771 | |
| 772 | mt9v022->chip_control = MT9V022_CHIP_CONTROL_DEFAULT; |
| 773 | mt9v022->client = client; |
| 774 | i2c_set_clientdata(client, mt9v022); |
| 775 | |
| 776 | icd = &mt9v022->icd; |
Guennadi Liakhovetski | 7397bfbe | 2008-04-22 14:42:04 -0300 | [diff] [blame] | 777 | icd->ops = &mt9v022_ops; |
| 778 | icd->control = &client->dev; |
| 779 | icd->x_min = 1; |
| 780 | icd->y_min = 4; |
| 781 | icd->x_current = 1; |
| 782 | icd->y_current = 4; |
| 783 | icd->width_min = 48; |
| 784 | icd->width_max = 752; |
| 785 | icd->height_min = 32; |
| 786 | icd->height_max = 480; |
| 787 | icd->y_skip_top = 1; |
| 788 | icd->iface = icl->bus_id; |
| 789 | /* Default datawidth - this is the only width this camera (normally) |
| 790 | * supports. It is only with extra logic that it can support |
| 791 | * other widths. Therefore it seems to be a sensible default. */ |
| 792 | mt9v022->datawidth = 10; |
| 793 | |
| 794 | ret = bus_switch_request(mt9v022, icl); |
| 795 | if (ret) |
| 796 | goto eswinit; |
| 797 | |
| 798 | ret = soc_camera_device_register(icd); |
| 799 | if (ret) |
| 800 | goto eisdr; |
| 801 | |
| 802 | return 0; |
| 803 | |
| 804 | eisdr: |
| 805 | bus_switch_release(mt9v022); |
| 806 | eswinit: |
| 807 | kfree(mt9v022); |
| 808 | return ret; |
| 809 | } |
| 810 | |
| 811 | static int mt9v022_remove(struct i2c_client *client) |
| 812 | { |
| 813 | struct mt9v022 *mt9v022 = i2c_get_clientdata(client); |
| 814 | |
| 815 | soc_camera_device_unregister(&mt9v022->icd); |
| 816 | bus_switch_release(mt9v022); |
| 817 | kfree(mt9v022); |
| 818 | |
| 819 | return 0; |
| 820 | } |
| 821 | |
Jean Delvare | 3760f73 | 2008-04-29 23:11:40 +0200 | [diff] [blame^] | 822 | static const struct i2c_device_id mt9v022_id[] = { |
| 823 | { "mt9v022", 0 }, |
| 824 | { } |
| 825 | }; |
| 826 | MODULE_DEVICE_TABLE(i2c, mt9v022_id); |
| 827 | |
Guennadi Liakhovetski | 7397bfbe | 2008-04-22 14:42:04 -0300 | [diff] [blame] | 828 | static struct i2c_driver mt9v022_i2c_driver = { |
| 829 | .driver = { |
| 830 | .name = "mt9v022", |
| 831 | }, |
| 832 | .probe = mt9v022_probe, |
| 833 | .remove = mt9v022_remove, |
Jean Delvare | 3760f73 | 2008-04-29 23:11:40 +0200 | [diff] [blame^] | 834 | .id_table = mt9v022_id, |
Guennadi Liakhovetski | 7397bfbe | 2008-04-22 14:42:04 -0300 | [diff] [blame] | 835 | }; |
| 836 | |
| 837 | static int __init mt9v022_mod_init(void) |
| 838 | { |
| 839 | return i2c_add_driver(&mt9v022_i2c_driver); |
| 840 | } |
| 841 | |
| 842 | static void __exit mt9v022_mod_exit(void) |
| 843 | { |
| 844 | i2c_del_driver(&mt9v022_i2c_driver); |
| 845 | } |
| 846 | |
| 847 | module_init(mt9v022_mod_init); |
| 848 | module_exit(mt9v022_mod_exit); |
| 849 | |
| 850 | MODULE_DESCRIPTION("Micron MT9V022 Camera driver"); |
| 851 | MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>"); |
| 852 | MODULE_LICENSE("GPL"); |