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 | |
| 11 | #include <linux/videodev2.h> |
| 12 | #include <linux/slab.h> |
| 13 | #include <linux/i2c.h> |
| 14 | #include <linux/log2.h> |
| 15 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 16 | #include <media/v4l2-subdev.h> |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 17 | #include <media/v4l2-chip-ident.h> |
| 18 | #include <media/soc_camera.h> |
| 19 | |
| 20 | /* mt9t031 i2c address 0x5d |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 21 | * The platform has to define i2c_board_info and link to it from |
| 22 | * struct soc_camera_link */ |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 23 | |
| 24 | /* mt9t031 selected register addresses */ |
| 25 | #define MT9T031_CHIP_VERSION 0x00 |
| 26 | #define MT9T031_ROW_START 0x01 |
| 27 | #define MT9T031_COLUMN_START 0x02 |
| 28 | #define MT9T031_WINDOW_HEIGHT 0x03 |
| 29 | #define MT9T031_WINDOW_WIDTH 0x04 |
| 30 | #define MT9T031_HORIZONTAL_BLANKING 0x05 |
| 31 | #define MT9T031_VERTICAL_BLANKING 0x06 |
| 32 | #define MT9T031_OUTPUT_CONTROL 0x07 |
| 33 | #define MT9T031_SHUTTER_WIDTH_UPPER 0x08 |
| 34 | #define MT9T031_SHUTTER_WIDTH 0x09 |
| 35 | #define MT9T031_PIXEL_CLOCK_CONTROL 0x0a |
| 36 | #define MT9T031_FRAME_RESTART 0x0b |
| 37 | #define MT9T031_SHUTTER_DELAY 0x0c |
| 38 | #define MT9T031_RESET 0x0d |
| 39 | #define MT9T031_READ_MODE_1 0x1e |
| 40 | #define MT9T031_READ_MODE_2 0x20 |
| 41 | #define MT9T031_READ_MODE_3 0x21 |
| 42 | #define MT9T031_ROW_ADDRESS_MODE 0x22 |
| 43 | #define MT9T031_COLUMN_ADDRESS_MODE 0x23 |
| 44 | #define MT9T031_GLOBAL_GAIN 0x35 |
| 45 | #define MT9T031_CHIP_ENABLE 0xF8 |
| 46 | |
| 47 | #define MT9T031_MAX_HEIGHT 1536 |
| 48 | #define MT9T031_MAX_WIDTH 2048 |
| 49 | #define MT9T031_MIN_HEIGHT 2 |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 50 | #define MT9T031_MIN_WIDTH 18 |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 51 | #define MT9T031_HORIZONTAL_BLANK 142 |
| 52 | #define MT9T031_VERTICAL_BLANK 25 |
| 53 | #define MT9T031_COLUMN_SKIP 32 |
| 54 | #define MT9T031_ROW_SKIP 20 |
| 55 | |
| 56 | #define MT9T031_BUS_PARAM (SOCAM_PCLK_SAMPLE_RISING | \ |
| 57 | SOCAM_PCLK_SAMPLE_FALLING | SOCAM_HSYNC_ACTIVE_HIGH | \ |
| 58 | SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_DATA_ACTIVE_HIGH | \ |
| 59 | SOCAM_MASTER | SOCAM_DATAWIDTH_10) |
| 60 | |
| 61 | static const struct soc_camera_data_format mt9t031_colour_formats[] = { |
| 62 | { |
| 63 | .name = "Bayer (sRGB) 10 bit", |
| 64 | .depth = 10, |
| 65 | .fourcc = V4L2_PIX_FMT_SGRBG10, |
| 66 | .colorspace = V4L2_COLORSPACE_SRGB, |
| 67 | } |
| 68 | }; |
| 69 | |
| 70 | struct mt9t031 { |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 71 | struct v4l2_subdev subdev; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 72 | struct v4l2_rect rect; /* Sensor window */ |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 73 | int model; /* V4L2_IDENT_MT9T031* codes from v4l2-chip-ident.h */ |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 74 | u16 xskip; |
| 75 | u16 yskip; |
Guennadi Liakhovetski | 96c7539 | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 76 | unsigned int gain; |
Guennadi Liakhovetski | 3253610 | 2009-12-11 11:14:46 -0300 | [diff] [blame^] | 77 | unsigned short y_skip_top; /* Lines to skip at the top */ |
Guennadi Liakhovetski | 96c7539 | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 78 | unsigned int exposure; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 79 | unsigned char autoexposure; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 80 | }; |
| 81 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 82 | static struct mt9t031 *to_mt9t031(const struct i2c_client *client) |
| 83 | { |
| 84 | return container_of(i2c_get_clientdata(client), struct mt9t031, subdev); |
| 85 | } |
| 86 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 87 | static int reg_read(struct i2c_client *client, const u8 reg) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 88 | { |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 89 | s32 data = i2c_smbus_read_word_data(client, reg); |
| 90 | return data < 0 ? data : swab16(data); |
| 91 | } |
| 92 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 93 | static int reg_write(struct i2c_client *client, const u8 reg, |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 94 | const u16 data) |
| 95 | { |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 96 | return i2c_smbus_write_word_data(client, reg, swab16(data)); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 97 | } |
| 98 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 99 | static int reg_set(struct i2c_client *client, const u8 reg, |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 100 | const u16 data) |
| 101 | { |
| 102 | int ret; |
| 103 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 104 | ret = reg_read(client, reg); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 105 | if (ret < 0) |
| 106 | return ret; |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 107 | return reg_write(client, reg, ret | data); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 108 | } |
| 109 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 110 | static int reg_clear(struct i2c_client *client, const u8 reg, |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 111 | const u16 data) |
| 112 | { |
| 113 | int ret; |
| 114 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 115 | ret = reg_read(client, reg); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 116 | if (ret < 0) |
| 117 | return ret; |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 118 | return reg_write(client, reg, ret & ~data); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 119 | } |
| 120 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 121 | static int set_shutter(struct i2c_client *client, const u32 data) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 122 | { |
| 123 | int ret; |
| 124 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 125 | ret = reg_write(client, MT9T031_SHUTTER_WIDTH_UPPER, data >> 16); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 126 | |
| 127 | if (ret >= 0) |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 128 | ret = reg_write(client, MT9T031_SHUTTER_WIDTH, data & 0xffff); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 129 | |
| 130 | return ret; |
| 131 | } |
| 132 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 133 | static int get_shutter(struct i2c_client *client, u32 *data) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 134 | { |
| 135 | int ret; |
| 136 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 137 | ret = reg_read(client, MT9T031_SHUTTER_WIDTH_UPPER); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 138 | *data = ret << 16; |
| 139 | |
| 140 | if (ret >= 0) |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 141 | ret = reg_read(client, MT9T031_SHUTTER_WIDTH); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 142 | *data |= ret & 0xffff; |
| 143 | |
| 144 | return ret < 0 ? ret : 0; |
| 145 | } |
| 146 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 147 | static int mt9t031_idle(struct i2c_client *client) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 148 | { |
| 149 | int ret; |
| 150 | |
| 151 | /* Disable chip output, synchronous option update */ |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 152 | ret = reg_write(client, MT9T031_RESET, 1); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 153 | if (ret >= 0) |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 154 | ret = reg_write(client, MT9T031_RESET, 0); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 155 | if (ret >= 0) |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 156 | ret = reg_clear(client, MT9T031_OUTPUT_CONTROL, 2); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 157 | |
| 158 | return ret >= 0 ? 0 : -EIO; |
| 159 | } |
| 160 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 161 | static int mt9t031_disable(struct i2c_client *client) |
| 162 | { |
| 163 | /* Disable the chip */ |
| 164 | reg_clear(client, MT9T031_OUTPUT_CONTROL, 2); |
| 165 | |
| 166 | return 0; |
| 167 | } |
| 168 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 169 | static int mt9t031_s_stream(struct v4l2_subdev *sd, int enable) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 170 | { |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 171 | struct i2c_client *client = sd->priv; |
| 172 | int ret; |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 173 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 174 | if (enable) |
| 175 | /* Switch to master "normal" mode */ |
| 176 | ret = reg_set(client, MT9T031_OUTPUT_CONTROL, 2); |
| 177 | else |
| 178 | /* Stop sensor readout */ |
| 179 | ret = reg_clear(client, MT9T031_OUTPUT_CONTROL, 2); |
| 180 | |
| 181 | if (ret < 0) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 182 | return -EIO; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 183 | |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 184 | return 0; |
| 185 | } |
| 186 | |
| 187 | static int mt9t031_set_bus_param(struct soc_camera_device *icd, |
| 188 | unsigned long flags) |
| 189 | { |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 190 | struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd)); |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 191 | |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 192 | /* The caller should have queried our parameters, check anyway */ |
| 193 | if (flags & ~MT9T031_BUS_PARAM) |
| 194 | return -EINVAL; |
| 195 | |
| 196 | if (flags & SOCAM_PCLK_SAMPLE_FALLING) |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 197 | reg_clear(client, MT9T031_PIXEL_CLOCK_CONTROL, 0x8000); |
Philippe Rétornaz | c98afbf | 2009-03-13 09:42:32 -0300 | [diff] [blame] | 198 | else |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 199 | reg_set(client, MT9T031_PIXEL_CLOCK_CONTROL, 0x8000); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 200 | |
| 201 | return 0; |
| 202 | } |
| 203 | |
| 204 | static unsigned long mt9t031_query_bus_param(struct soc_camera_device *icd) |
| 205 | { |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 206 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 207 | |
| 208 | return soc_camera_apply_sensor_flags(icl, MT9T031_BUS_PARAM); |
| 209 | } |
| 210 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 211 | /* target must be _even_ */ |
| 212 | static u16 mt9t031_skip(s32 *source, s32 target, s32 max) |
Guennadi Liakhovetski | 70e1d35 | 2009-02-23 12:13:23 -0300 | [diff] [blame] | 213 | { |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 214 | unsigned int skip; |
| 215 | |
| 216 | if (*source < target + target / 2) { |
| 217 | *source = target; |
| 218 | return 1; |
| 219 | } |
| 220 | |
| 221 | skip = min(max, *source + target / 2) / target; |
| 222 | if (skip > 8) |
| 223 | skip = 8; |
| 224 | *source = target * skip; |
| 225 | |
| 226 | return skip; |
Guennadi Liakhovetski | 70e1d35 | 2009-02-23 12:13:23 -0300 | [diff] [blame] | 227 | } |
| 228 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 229 | /* rect is the sensor rectangle, the caller guarantees parameter validity */ |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 230 | static int mt9t031_set_params(struct soc_camera_device *icd, |
| 231 | struct v4l2_rect *rect, u16 xskip, u16 yskip) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 232 | { |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 233 | struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd)); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 234 | struct mt9t031 *mt9t031 = to_mt9t031(client); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 235 | int ret; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 236 | u16 xbin, ybin; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 237 | const u16 hblank = MT9T031_HORIZONTAL_BLANK, |
| 238 | vblank = MT9T031_VERTICAL_BLANK; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 239 | |
| 240 | xbin = min(xskip, (u16)3); |
| 241 | ybin = min(yskip, (u16)3); |
| 242 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 243 | /* |
| 244 | * Could just do roundup(rect->left, [xy]bin * 2); but this is cheaper. |
| 245 | * There is always a valid suitably aligned value. The worst case is |
| 246 | * xbin = 3, width = 2048. Then we will start at 36, the last read out |
| 247 | * pixel will be 2083, which is < 2085 - first black pixel. |
| 248 | * |
| 249 | * MT9T031 datasheet imposes window left border alignment, depending on |
| 250 | * the selected xskip. Failing to conform to this requirement produces |
| 251 | * dark horizontal stripes in the image. However, even obeying to this |
| 252 | * requirement doesn't eliminate the stripes in all configurations. They |
| 253 | * appear "locally reproducibly," but can differ between tests under |
| 254 | * different lighting conditions. |
| 255 | */ |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 256 | switch (xbin) { |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 257 | case 1: |
| 258 | rect->left &= ~1; |
| 259 | break; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 260 | case 2: |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 261 | rect->left &= ~3; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 262 | break; |
| 263 | case 3: |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 264 | rect->left = rect->left > roundup(MT9T031_COLUMN_SKIP, 6) ? |
| 265 | (rect->left / 6) * 6 : roundup(MT9T031_COLUMN_SKIP, 6); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 266 | } |
| 267 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 268 | rect->top &= ~1; |
| 269 | |
| 270 | dev_dbg(&client->dev, "skip %u:%u, rect %ux%u@%u:%u\n", |
| 271 | xskip, yskip, rect->width, rect->height, rect->left, rect->top); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 272 | |
Guennadi Liakhovetski | 70e1d35 | 2009-02-23 12:13:23 -0300 | [diff] [blame] | 273 | /* Disable register update, reconfigure atomically */ |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 274 | ret = reg_set(client, MT9T031_OUTPUT_CONTROL, 1); |
Guennadi Liakhovetski | 70e1d35 | 2009-02-23 12:13:23 -0300 | [diff] [blame] | 275 | if (ret < 0) |
| 276 | return ret; |
| 277 | |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 278 | /* Blanking and start values - default... */ |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 279 | ret = reg_write(client, MT9T031_HORIZONTAL_BLANKING, hblank); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 280 | if (ret >= 0) |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 281 | ret = reg_write(client, MT9T031_VERTICAL_BLANKING, vblank); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 282 | |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 283 | if (yskip != mt9t031->yskip || xskip != mt9t031->xskip) { |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 284 | /* Binning, skipping */ |
| 285 | if (ret >= 0) |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 286 | ret = reg_write(client, MT9T031_COLUMN_ADDRESS_MODE, |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 287 | ((xbin - 1) << 4) | (xskip - 1)); |
| 288 | if (ret >= 0) |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 289 | ret = reg_write(client, MT9T031_ROW_ADDRESS_MODE, |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 290 | ((ybin - 1) << 4) | (yskip - 1)); |
| 291 | } |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 292 | dev_dbg(&client->dev, "new physical left %u, top %u\n", |
| 293 | rect->left, rect->top); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 294 | |
| 295 | /* The caller provides a supported format, as guaranteed by |
| 296 | * icd->try_fmt_cap(), soc_camera_s_crop() and soc_camera_cropcap() */ |
| 297 | if (ret >= 0) |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 298 | ret = reg_write(client, MT9T031_COLUMN_START, rect->left); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 299 | if (ret >= 0) |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 300 | ret = reg_write(client, MT9T031_ROW_START, rect->top); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 301 | if (ret >= 0) |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 302 | ret = reg_write(client, MT9T031_WINDOW_WIDTH, rect->width - 1); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 303 | if (ret >= 0) |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 304 | ret = reg_write(client, MT9T031_WINDOW_HEIGHT, |
Guennadi Liakhovetski | 3253610 | 2009-12-11 11:14:46 -0300 | [diff] [blame^] | 305 | rect->height + mt9t031->y_skip_top - 1); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 306 | if (ret >= 0 && mt9t031->autoexposure) { |
Guennadi Liakhovetski | 3253610 | 2009-12-11 11:14:46 -0300 | [diff] [blame^] | 307 | unsigned int total_h = rect->height + mt9t031->y_skip_top + vblank; |
Guennadi Liakhovetski | 96c7539 | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 308 | ret = set_shutter(client, total_h); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 309 | if (ret >= 0) { |
| 310 | const u32 shutter_max = MT9T031_MAX_HEIGHT + vblank; |
| 311 | const struct v4l2_queryctrl *qctrl = |
| 312 | soc_camera_find_qctrl(icd->ops, |
| 313 | V4L2_CID_EXPOSURE); |
Guennadi Liakhovetski | 96c7539 | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 314 | mt9t031->exposure = (shutter_max / 2 + (total_h - 1) * |
| 315 | (qctrl->maximum - qctrl->minimum)) / |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 316 | shutter_max + qctrl->minimum; |
| 317 | } |
| 318 | } |
| 319 | |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 320 | /* Re-enable register update, commit all changes */ |
| 321 | if (ret >= 0) |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 322 | ret = reg_clear(client, MT9T031_OUTPUT_CONTROL, 1); |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 323 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 324 | if (ret >= 0) { |
| 325 | mt9t031->rect = *rect; |
| 326 | mt9t031->xskip = xskip; |
| 327 | mt9t031->yskip = yskip; |
| 328 | } |
| 329 | |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 330 | return ret < 0 ? ret : 0; |
| 331 | } |
| 332 | |
Guennadi Liakhovetski | 08590b9 | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 333 | 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] | 334 | { |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 335 | struct v4l2_rect rect = a->c; |
Guennadi Liakhovetski | 08590b9 | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 336 | struct i2c_client *client = sd->priv; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 337 | struct mt9t031 *mt9t031 = to_mt9t031(client); |
Guennadi Liakhovetski | 08590b9 | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 338 | struct soc_camera_device *icd = client->dev.platform_data; |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 339 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 340 | rect.width = ALIGN(rect.width, 2); |
| 341 | rect.height = ALIGN(rect.height, 2); |
Guennadi Liakhovetski | e330919 | 2009-08-25 11:46:42 -0300 | [diff] [blame] | 342 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 343 | soc_camera_limit_side(&rect.left, &rect.width, |
| 344 | MT9T031_COLUMN_SKIP, MT9T031_MIN_WIDTH, MT9T031_MAX_WIDTH); |
Guennadi Liakhovetski | e330919 | 2009-08-25 11:46:42 -0300 | [diff] [blame] | 345 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 346 | soc_camera_limit_side(&rect.top, &rect.height, |
| 347 | MT9T031_ROW_SKIP, MT9T031_MIN_HEIGHT, MT9T031_MAX_HEIGHT); |
| 348 | |
| 349 | return mt9t031_set_params(icd, &rect, mt9t031->xskip, mt9t031->yskip); |
| 350 | } |
| 351 | |
| 352 | static int mt9t031_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a) |
| 353 | { |
| 354 | struct i2c_client *client = sd->priv; |
| 355 | struct mt9t031 *mt9t031 = to_mt9t031(client); |
| 356 | |
| 357 | a->c = mt9t031->rect; |
| 358 | a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 359 | |
| 360 | return 0; |
| 361 | } |
| 362 | |
| 363 | static int mt9t031_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a) |
| 364 | { |
| 365 | a->bounds.left = MT9T031_COLUMN_SKIP; |
| 366 | a->bounds.top = MT9T031_ROW_SKIP; |
| 367 | a->bounds.width = MT9T031_MAX_WIDTH; |
| 368 | a->bounds.height = MT9T031_MAX_HEIGHT; |
| 369 | a->defrect = a->bounds; |
| 370 | a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 371 | a->pixelaspect.numerator = 1; |
| 372 | a->pixelaspect.denominator = 1; |
| 373 | |
| 374 | return 0; |
| 375 | } |
| 376 | |
| 377 | static int mt9t031_g_fmt(struct v4l2_subdev *sd, struct v4l2_format *f) |
| 378 | { |
| 379 | struct i2c_client *client = sd->priv; |
| 380 | struct mt9t031 *mt9t031 = to_mt9t031(client); |
| 381 | struct v4l2_pix_format *pix = &f->fmt.pix; |
| 382 | |
| 383 | pix->width = mt9t031->rect.width / mt9t031->xskip; |
| 384 | pix->height = mt9t031->rect.height / mt9t031->yskip; |
| 385 | pix->pixelformat = V4L2_PIX_FMT_SGRBG10; |
| 386 | pix->field = V4L2_FIELD_NONE; |
| 387 | pix->colorspace = V4L2_COLORSPACE_SRGB; |
| 388 | |
| 389 | return 0; |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 390 | } |
| 391 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 392 | static int mt9t031_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *f) |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 393 | { |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 394 | struct i2c_client *client = sd->priv; |
| 395 | struct mt9t031 *mt9t031 = to_mt9t031(client); |
| 396 | struct soc_camera_device *icd = client->dev.platform_data; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 397 | struct v4l2_pix_format *pix = &f->fmt.pix; |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 398 | u16 xskip, yskip; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 399 | struct v4l2_rect rect = mt9t031->rect; |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 400 | |
| 401 | /* |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 402 | * try_fmt has put width and height within limits. |
| 403 | * S_FMT: use binning and skipping for scaling |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 404 | */ |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 405 | xskip = mt9t031_skip(&rect.width, pix->width, MT9T031_MAX_WIDTH); |
| 406 | yskip = mt9t031_skip(&rect.height, pix->height, MT9T031_MAX_HEIGHT); |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 407 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 408 | /* mt9t031_set_params() doesn't change width and height */ |
| 409 | return mt9t031_set_params(icd, &rect, xskip, yskip); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 410 | } |
| 411 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 412 | /* |
| 413 | * If a user window larger than sensor window is requested, we'll increase the |
| 414 | * sensor window. |
| 415 | */ |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 416 | static int mt9t031_try_fmt(struct v4l2_subdev *sd, struct v4l2_format *f) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 417 | { |
| 418 | struct v4l2_pix_format *pix = &f->fmt.pix; |
| 419 | |
Trent Piepho | 653dc59 | 2009-05-30 21:45:46 -0300 | [diff] [blame] | 420 | v4l_bound_align_image( |
| 421 | &pix->width, MT9T031_MIN_WIDTH, MT9T031_MAX_WIDTH, 1, |
| 422 | &pix->height, MT9T031_MIN_HEIGHT, MT9T031_MAX_HEIGHT, 1, 0); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 423 | |
| 424 | return 0; |
| 425 | } |
| 426 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 427 | static int mt9t031_g_chip_ident(struct v4l2_subdev *sd, |
| 428 | struct v4l2_dbg_chip_ident *id) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 429 | { |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 430 | struct i2c_client *client = sd->priv; |
| 431 | struct mt9t031 *mt9t031 = to_mt9t031(client); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 432 | |
Hans Verkuil | aecde8b | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 433 | if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 434 | return -EINVAL; |
| 435 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 436 | if (id->match.addr != client->addr) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 437 | return -ENODEV; |
| 438 | |
| 439 | id->ident = mt9t031->model; |
| 440 | id->revision = 0; |
| 441 | |
| 442 | return 0; |
| 443 | } |
| 444 | |
| 445 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 446 | static int mt9t031_g_register(struct v4l2_subdev *sd, |
| 447 | struct v4l2_dbg_register *reg) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 448 | { |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 449 | struct i2c_client *client = sd->priv; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 450 | |
Hans Verkuil | aecde8b | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 451 | if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 452 | return -EINVAL; |
| 453 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 454 | if (reg->match.addr != client->addr) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 455 | return -ENODEV; |
| 456 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 457 | reg->val = reg_read(client, reg->reg); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 458 | |
| 459 | if (reg->val > 0xffff) |
| 460 | return -EIO; |
| 461 | |
| 462 | return 0; |
| 463 | } |
| 464 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 465 | static int mt9t031_s_register(struct v4l2_subdev *sd, |
| 466 | struct v4l2_dbg_register *reg) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 467 | { |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 468 | struct i2c_client *client = sd->priv; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 469 | |
Hans Verkuil | aecde8b | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 470 | if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 471 | return -EINVAL; |
| 472 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 473 | if (reg->match.addr != client->addr) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 474 | return -ENODEV; |
| 475 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 476 | if (reg_write(client, reg->reg, reg->val) < 0) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 477 | return -EIO; |
| 478 | |
| 479 | return 0; |
| 480 | } |
| 481 | #endif |
| 482 | |
| 483 | static const struct v4l2_queryctrl mt9t031_controls[] = { |
| 484 | { |
| 485 | .id = V4L2_CID_VFLIP, |
| 486 | .type = V4L2_CTRL_TYPE_BOOLEAN, |
| 487 | .name = "Flip Vertically", |
| 488 | .minimum = 0, |
| 489 | .maximum = 1, |
| 490 | .step = 1, |
| 491 | .default_value = 0, |
| 492 | }, { |
Guennadi Liakhovetski | 70e1d35 | 2009-02-23 12:13:23 -0300 | [diff] [blame] | 493 | .id = V4L2_CID_HFLIP, |
| 494 | .type = V4L2_CTRL_TYPE_BOOLEAN, |
| 495 | .name = "Flip Horizontally", |
| 496 | .minimum = 0, |
| 497 | .maximum = 1, |
| 498 | .step = 1, |
| 499 | .default_value = 0, |
| 500 | }, { |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 501 | .id = V4L2_CID_GAIN, |
| 502 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 503 | .name = "Gain", |
| 504 | .minimum = 0, |
| 505 | .maximum = 127, |
| 506 | .step = 1, |
| 507 | .default_value = 64, |
| 508 | .flags = V4L2_CTRL_FLAG_SLIDER, |
| 509 | }, { |
| 510 | .id = V4L2_CID_EXPOSURE, |
| 511 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 512 | .name = "Exposure", |
| 513 | .minimum = 1, |
| 514 | .maximum = 255, |
| 515 | .step = 1, |
| 516 | .default_value = 255, |
| 517 | .flags = V4L2_CTRL_FLAG_SLIDER, |
| 518 | }, { |
| 519 | .id = V4L2_CID_EXPOSURE_AUTO, |
| 520 | .type = V4L2_CTRL_TYPE_BOOLEAN, |
| 521 | .name = "Automatic Exposure", |
| 522 | .minimum = 0, |
| 523 | .maximum = 1, |
| 524 | .step = 1, |
| 525 | .default_value = 1, |
| 526 | } |
| 527 | }; |
| 528 | |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 529 | static struct soc_camera_ops mt9t031_ops = { |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 530 | .set_bus_param = mt9t031_set_bus_param, |
| 531 | .query_bus_param = mt9t031_query_bus_param, |
| 532 | .controls = mt9t031_controls, |
| 533 | .num_controls = ARRAY_SIZE(mt9t031_controls), |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 534 | }; |
| 535 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 536 | 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] | 537 | { |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 538 | struct i2c_client *client = sd->priv; |
| 539 | struct mt9t031 *mt9t031 = to_mt9t031(client); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 540 | int data; |
| 541 | |
| 542 | switch (ctrl->id) { |
| 543 | case V4L2_CID_VFLIP: |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 544 | data = reg_read(client, MT9T031_READ_MODE_2); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 545 | if (data < 0) |
| 546 | return -EIO; |
| 547 | ctrl->value = !!(data & 0x8000); |
| 548 | break; |
| 549 | case V4L2_CID_HFLIP: |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 550 | data = reg_read(client, MT9T031_READ_MODE_2); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 551 | if (data < 0) |
| 552 | return -EIO; |
| 553 | ctrl->value = !!(data & 0x4000); |
| 554 | break; |
| 555 | case V4L2_CID_EXPOSURE_AUTO: |
| 556 | ctrl->value = mt9t031->autoexposure; |
| 557 | break; |
Guennadi Liakhovetski | 96c7539 | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 558 | case V4L2_CID_GAIN: |
| 559 | ctrl->value = mt9t031->gain; |
| 560 | break; |
| 561 | case V4L2_CID_EXPOSURE: |
| 562 | ctrl->value = mt9t031->exposure; |
| 563 | break; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 564 | } |
| 565 | return 0; |
| 566 | } |
| 567 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 568 | 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] | 569 | { |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 570 | struct i2c_client *client = sd->priv; |
| 571 | struct mt9t031 *mt9t031 = to_mt9t031(client); |
| 572 | struct soc_camera_device *icd = client->dev.platform_data; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 573 | const struct v4l2_queryctrl *qctrl; |
| 574 | int data; |
| 575 | |
| 576 | qctrl = soc_camera_find_qctrl(&mt9t031_ops, ctrl->id); |
| 577 | |
| 578 | if (!qctrl) |
| 579 | return -EINVAL; |
| 580 | |
| 581 | switch (ctrl->id) { |
| 582 | case V4L2_CID_VFLIP: |
| 583 | if (ctrl->value) |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 584 | data = reg_set(client, MT9T031_READ_MODE_2, 0x8000); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 585 | else |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 586 | data = reg_clear(client, MT9T031_READ_MODE_2, 0x8000); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 587 | if (data < 0) |
| 588 | return -EIO; |
| 589 | break; |
| 590 | case V4L2_CID_HFLIP: |
| 591 | if (ctrl->value) |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 592 | data = reg_set(client, MT9T031_READ_MODE_2, 0x4000); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 593 | else |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 594 | data = reg_clear(client, MT9T031_READ_MODE_2, 0x4000); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 595 | if (data < 0) |
| 596 | return -EIO; |
| 597 | break; |
| 598 | case V4L2_CID_GAIN: |
| 599 | if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum) |
| 600 | return -EINVAL; |
| 601 | /* See Datasheet Table 7, Gain settings. */ |
| 602 | if (ctrl->value <= qctrl->default_value) { |
| 603 | /* Pack it into 0..1 step 0.125, register values 0..8 */ |
| 604 | unsigned long range = qctrl->default_value - qctrl->minimum; |
| 605 | data = ((ctrl->value - qctrl->minimum) * 8 + range / 2) / range; |
| 606 | |
Guennadi Liakhovetski | 85f8be6 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 607 | dev_dbg(&client->dev, "Setting gain %d\n", data); |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 608 | data = reg_write(client, MT9T031_GLOBAL_GAIN, data); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 609 | if (data < 0) |
| 610 | return -EIO; |
| 611 | } else { |
Guennadi Liakhovetski | 70e1d35 | 2009-02-23 12:13:23 -0300 | [diff] [blame] | 612 | /* Pack it into 1.125..128 variable step, register values 9..0x7860 */ |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 613 | /* We assume qctrl->maximum - qctrl->default_value - 1 > 0 */ |
| 614 | unsigned long range = qctrl->maximum - qctrl->default_value - 1; |
Guennadi Liakhovetski | 70e1d35 | 2009-02-23 12:13:23 -0300 | [diff] [blame] | 615 | /* calculated gain: map 65..127 to 9..1024 step 0.125 */ |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 616 | unsigned long gain = ((ctrl->value - qctrl->default_value - 1) * |
Guennadi Liakhovetski | 70e1d35 | 2009-02-23 12:13:23 -0300 | [diff] [blame] | 617 | 1015 + range / 2) / range + 9; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 618 | |
Guennadi Liakhovetski | 70e1d35 | 2009-02-23 12:13:23 -0300 | [diff] [blame] | 619 | if (gain <= 32) /* calculated gain 9..32 -> 9..32 */ |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 620 | data = gain; |
Guennadi Liakhovetski | 70e1d35 | 2009-02-23 12:13:23 -0300 | [diff] [blame] | 621 | else if (gain <= 64) /* calculated gain 33..64 -> 0x51..0x60 */ |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 622 | data = ((gain - 32) * 16 + 16) / 32 + 80; |
| 623 | else |
Guennadi Liakhovetski | 70e1d35 | 2009-02-23 12:13:23 -0300 | [diff] [blame] | 624 | /* calculated gain 65..1024 -> (1..120) << 8 + 0x60 */ |
| 625 | data = (((gain - 64 + 7) * 32) & 0xff00) | 0x60; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 626 | |
Guennadi Liakhovetski | 85f8be6 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 627 | 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] | 628 | reg_read(client, MT9T031_GLOBAL_GAIN), data); |
| 629 | data = reg_write(client, MT9T031_GLOBAL_GAIN, data); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 630 | if (data < 0) |
| 631 | return -EIO; |
| 632 | } |
| 633 | |
| 634 | /* Success */ |
Guennadi Liakhovetski | 96c7539 | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 635 | mt9t031->gain = ctrl->value; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 636 | break; |
| 637 | case V4L2_CID_EXPOSURE: |
| 638 | /* mt9t031 has maximum == default */ |
| 639 | if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum) |
| 640 | return -EINVAL; |
| 641 | else { |
| 642 | const unsigned long range = qctrl->maximum - qctrl->minimum; |
| 643 | const u32 shutter = ((ctrl->value - qctrl->minimum) * 1048 + |
| 644 | range / 2) / range + 1; |
| 645 | u32 old; |
| 646 | |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 647 | get_shutter(client, &old); |
Guennadi Liakhovetski | 85f8be6 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 648 | dev_dbg(&client->dev, "Set shutter from %u to %u\n", |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 649 | old, shutter); |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 650 | if (set_shutter(client, shutter) < 0) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 651 | return -EIO; |
Guennadi Liakhovetski | 96c7539 | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 652 | mt9t031->exposure = ctrl->value; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 653 | mt9t031->autoexposure = 0; |
| 654 | } |
| 655 | break; |
| 656 | case V4L2_CID_EXPOSURE_AUTO: |
| 657 | if (ctrl->value) { |
| 658 | const u16 vblank = MT9T031_VERTICAL_BLANK; |
| 659 | const u32 shutter_max = MT9T031_MAX_HEIGHT + vblank; |
Guennadi Liakhovetski | 96c7539 | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 660 | unsigned int total_h = mt9t031->rect.height + |
Guennadi Liakhovetski | 3253610 | 2009-12-11 11:14:46 -0300 | [diff] [blame^] | 661 | mt9t031->y_skip_top + vblank; |
Guennadi Liakhovetski | 96c7539 | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 662 | |
| 663 | if (set_shutter(client, total_h) < 0) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 664 | return -EIO; |
| 665 | qctrl = soc_camera_find_qctrl(icd->ops, V4L2_CID_EXPOSURE); |
Guennadi Liakhovetski | 96c7539 | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 666 | mt9t031->exposure = (shutter_max / 2 + (total_h - 1) * |
| 667 | (qctrl->maximum - qctrl->minimum)) / |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 668 | shutter_max + qctrl->minimum; |
| 669 | mt9t031->autoexposure = 1; |
| 670 | } else |
| 671 | mt9t031->autoexposure = 0; |
| 672 | break; |
| 673 | } |
| 674 | return 0; |
| 675 | } |
| 676 | |
| 677 | /* Interface active, can use i2c. If it fails, it can indeed mean, that |
| 678 | * this wasn't our capture interface, so, we wait for the right one */ |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 679 | static int mt9t031_video_probe(struct i2c_client *client) |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 680 | { |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 681 | struct soc_camera_device *icd = client->dev.platform_data; |
| 682 | struct mt9t031 *mt9t031 = to_mt9t031(client); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 683 | s32 data; |
Guennadi Liakhovetski | a4c56fd | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 684 | int ret; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 685 | |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 686 | /* Enable the chip */ |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 687 | data = reg_write(client, MT9T031_CHIP_ENABLE, 1); |
Guennadi Liakhovetski | 85f8be6 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 688 | dev_dbg(&client->dev, "write: %d\n", data); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 689 | |
| 690 | /* Read out the chip version register */ |
Guennadi Liakhovetski | 9538e1c | 2009-04-24 12:57:01 -0300 | [diff] [blame] | 691 | data = reg_read(client, MT9T031_CHIP_VERSION); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 692 | |
| 693 | switch (data) { |
| 694 | case 0x1621: |
| 695 | mt9t031->model = V4L2_IDENT_MT9T031; |
| 696 | icd->formats = mt9t031_colour_formats; |
| 697 | icd->num_formats = ARRAY_SIZE(mt9t031_colour_formats); |
| 698 | break; |
| 699 | default: |
Guennadi Liakhovetski | 85f8be6 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 700 | dev_err(&client->dev, |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 701 | "No MT9T031 chip detected, register read %x\n", data); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 702 | return -ENODEV; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 703 | } |
| 704 | |
Guennadi Liakhovetski | 85f8be6 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 705 | dev_info(&client->dev, "Detected a MT9T031 chip ID %x\n", data); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 706 | |
Guennadi Liakhovetski | a4c56fd | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 707 | ret = mt9t031_idle(client); |
| 708 | if (ret < 0) |
| 709 | dev_err(&client->dev, "Failed to initialise the camera\n"); |
| 710 | |
Guennadi Liakhovetski | 96c7539 | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 711 | /* mt9t031_idle() has reset the chip to default. */ |
| 712 | mt9t031->exposure = 255; |
| 713 | mt9t031->gain = 64; |
| 714 | |
Guennadi Liakhovetski | a4c56fd | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 715 | return ret; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 716 | } |
| 717 | |
Guennadi Liakhovetski | 3253610 | 2009-12-11 11:14:46 -0300 | [diff] [blame^] | 718 | static int mt9t031_g_skip_top_lines(struct v4l2_subdev *sd, u32 *lines) |
| 719 | { |
| 720 | struct i2c_client *client = sd->priv; |
| 721 | struct mt9t031 *mt9t031 = to_mt9t031(client); |
| 722 | |
| 723 | *lines = mt9t031->y_skip_top; |
| 724 | |
| 725 | return 0; |
| 726 | } |
| 727 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 728 | static struct v4l2_subdev_core_ops mt9t031_subdev_core_ops = { |
| 729 | .g_ctrl = mt9t031_g_ctrl, |
| 730 | .s_ctrl = mt9t031_s_ctrl, |
| 731 | .g_chip_ident = mt9t031_g_chip_ident, |
| 732 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
| 733 | .g_register = mt9t031_g_register, |
| 734 | .s_register = mt9t031_s_register, |
| 735 | #endif |
| 736 | }; |
| 737 | |
| 738 | static struct v4l2_subdev_video_ops mt9t031_subdev_video_ops = { |
| 739 | .s_stream = mt9t031_s_stream, |
| 740 | .s_fmt = mt9t031_s_fmt, |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 741 | .g_fmt = mt9t031_g_fmt, |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 742 | .try_fmt = mt9t031_try_fmt, |
Guennadi Liakhovetski | 08590b9 | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 743 | .s_crop = mt9t031_s_crop, |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 744 | .g_crop = mt9t031_g_crop, |
| 745 | .cropcap = mt9t031_cropcap, |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 746 | }; |
| 747 | |
Guennadi Liakhovetski | 3253610 | 2009-12-11 11:14:46 -0300 | [diff] [blame^] | 748 | static struct v4l2_subdev_sensor_ops mt9t031_subdev_sensor_ops = { |
| 749 | .g_skip_top_lines = mt9t031_g_skip_top_lines, |
| 750 | }; |
| 751 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 752 | static struct v4l2_subdev_ops mt9t031_subdev_ops = { |
| 753 | .core = &mt9t031_subdev_core_ops, |
| 754 | .video = &mt9t031_subdev_video_ops, |
Guennadi Liakhovetski | 3253610 | 2009-12-11 11:14:46 -0300 | [diff] [blame^] | 755 | .sensor = &mt9t031_subdev_sensor_ops, |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 756 | }; |
| 757 | |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 758 | static int mt9t031_probe(struct i2c_client *client, |
| 759 | const struct i2c_device_id *did) |
| 760 | { |
| 761 | struct mt9t031 *mt9t031; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 762 | struct soc_camera_device *icd = client->dev.platform_data; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 763 | struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 764 | struct soc_camera_link *icl; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 765 | int ret; |
| 766 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 767 | if (!icd) { |
| 768 | dev_err(&client->dev, "MT9T031: missing soc-camera data!\n"); |
| 769 | return -EINVAL; |
| 770 | } |
| 771 | |
| 772 | icl = to_soc_camera_link(icd); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 773 | if (!icl) { |
| 774 | dev_err(&client->dev, "MT9T031 driver needs platform data\n"); |
| 775 | return -EINVAL; |
| 776 | } |
| 777 | |
| 778 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) { |
| 779 | dev_warn(&adapter->dev, |
| 780 | "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n"); |
| 781 | return -EIO; |
| 782 | } |
| 783 | |
| 784 | mt9t031 = kzalloc(sizeof(struct mt9t031), GFP_KERNEL); |
| 785 | if (!mt9t031) |
| 786 | return -ENOMEM; |
| 787 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 788 | v4l2_i2c_subdev_init(&mt9t031->subdev, client, &mt9t031_subdev_ops); |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 789 | |
| 790 | /* Second stage probe - when a capture adapter is there */ |
Guennadi Liakhovetski | a0705b0 | 2009-08-25 11:46:17 -0300 | [diff] [blame] | 791 | icd->ops = &mt9t031_ops; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 792 | |
Guennadi Liakhovetski | 3253610 | 2009-12-11 11:14:46 -0300 | [diff] [blame^] | 793 | mt9t031->y_skip_top = 0; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 794 | mt9t031->rect.left = MT9T031_COLUMN_SKIP; |
| 795 | mt9t031->rect.top = MT9T031_ROW_SKIP; |
| 796 | mt9t031->rect.width = MT9T031_MAX_WIDTH; |
| 797 | mt9t031->rect.height = MT9T031_MAX_HEIGHT; |
| 798 | |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 799 | /* Simulated autoexposure. If enabled, we calculate shutter width |
| 800 | * ourselves in the driver based on vertical blanking and frame width */ |
| 801 | mt9t031->autoexposure = 1; |
| 802 | |
| 803 | mt9t031->xskip = 1; |
| 804 | mt9t031->yskip = 1; |
| 805 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 806 | mt9t031_idle(client); |
| 807 | |
| 808 | ret = mt9t031_video_probe(client); |
| 809 | |
| 810 | mt9t031_disable(client); |
| 811 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 812 | if (ret) { |
| 813 | icd->ops = NULL; |
| 814 | i2c_set_clientdata(client, NULL); |
| 815 | kfree(mt9t031); |
| 816 | } |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 817 | |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 818 | return ret; |
| 819 | } |
| 820 | |
| 821 | static int mt9t031_remove(struct i2c_client *client) |
| 822 | { |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 823 | struct mt9t031 *mt9t031 = to_mt9t031(client); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 824 | struct soc_camera_device *icd = client->dev.platform_data; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 825 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 826 | icd->ops = NULL; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 827 | i2c_set_clientdata(client, NULL); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 828 | client->driver = NULL; |
Guennadi Liakhovetski | 4e96fd0 | 2008-12-29 06:04:59 -0300 | [diff] [blame] | 829 | kfree(mt9t031); |
| 830 | |
| 831 | return 0; |
| 832 | } |
| 833 | |
| 834 | static const struct i2c_device_id mt9t031_id[] = { |
| 835 | { "mt9t031", 0 }, |
| 836 | { } |
| 837 | }; |
| 838 | MODULE_DEVICE_TABLE(i2c, mt9t031_id); |
| 839 | |
| 840 | static struct i2c_driver mt9t031_i2c_driver = { |
| 841 | .driver = { |
| 842 | .name = "mt9t031", |
| 843 | }, |
| 844 | .probe = mt9t031_probe, |
| 845 | .remove = mt9t031_remove, |
| 846 | .id_table = mt9t031_id, |
| 847 | }; |
| 848 | |
| 849 | static int __init mt9t031_mod_init(void) |
| 850 | { |
| 851 | return i2c_add_driver(&mt9t031_i2c_driver); |
| 852 | } |
| 853 | |
| 854 | static void __exit mt9t031_mod_exit(void) |
| 855 | { |
| 856 | i2c_del_driver(&mt9t031_i2c_driver); |
| 857 | } |
| 858 | |
| 859 | module_init(mt9t031_mod_init); |
| 860 | module_exit(mt9t031_mod_exit); |
| 861 | |
| 862 | MODULE_DESCRIPTION("Micron MT9T031 Camera driver"); |
| 863 | MODULE_AUTHOR("Guennadi Liakhovetski <lg@denx.de>"); |
| 864 | MODULE_LICENSE("GPL v2"); |