HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 1 | /* |
| 2 | * Driver for M-5MOLS 8M Pixel camera sensor with ISP |
| 3 | * |
| 4 | * Copyright (C) 2011 Samsung Electronics Co., Ltd. |
HeungJun, Kim | c307011 | 2011-06-07 02:00:58 -0300 | [diff] [blame] | 5 | * Author: HeungJun Kim <riverful.kim@samsung.com> |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 6 | * |
| 7 | * Copyright (C) 2009 Samsung Electronics Co., Ltd. |
HeungJun, Kim | c307011 | 2011-06-07 02:00:58 -0300 | [diff] [blame] | 8 | * Author: Dongsoo Nathaniel Kim <dongsoo45.kim@samsung.com> |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2 of the License, or |
| 13 | * (at your option) any later version. |
| 14 | */ |
| 15 | |
| 16 | #include <linux/i2c.h> |
| 17 | #include <linux/slab.h> |
| 18 | #include <linux/irq.h> |
| 19 | #include <linux/interrupt.h> |
| 20 | #include <linux/delay.h> |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 21 | #include <linux/gpio.h> |
| 22 | #include <linux/regulator/consumer.h> |
| 23 | #include <linux/videodev2.h> |
Paul Gortmaker | 7a707b8 | 2011-07-03 14:03:12 -0400 | [diff] [blame] | 24 | #include <linux/module.h> |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 25 | #include <media/v4l2-ctrls.h> |
| 26 | #include <media/v4l2-device.h> |
| 27 | #include <media/v4l2-subdev.h> |
| 28 | #include <media/m5mols.h> |
| 29 | |
| 30 | #include "m5mols.h" |
| 31 | #include "m5mols_reg.h" |
| 32 | |
| 33 | int m5mols_debug; |
| 34 | module_param(m5mols_debug, int, 0644); |
| 35 | |
| 36 | #define MODULE_NAME "M5MOLS" |
| 37 | #define M5MOLS_I2C_CHECK_RETRY 500 |
| 38 | |
| 39 | /* The regulator consumer names for external voltage regulators */ |
| 40 | static struct regulator_bulk_data supplies[] = { |
| 41 | { |
| 42 | .supply = "core", /* ARM core power, 1.2V */ |
| 43 | }, { |
| 44 | .supply = "dig_18", /* digital power 1, 1.8V */ |
| 45 | }, { |
| 46 | .supply = "d_sensor", /* sensor power 1, 1.8V */ |
| 47 | }, { |
| 48 | .supply = "dig_28", /* digital power 2, 2.8V */ |
| 49 | }, { |
| 50 | .supply = "a_sensor", /* analog power */ |
| 51 | }, { |
| 52 | .supply = "dig_12", /* digital power 3, 1.2V */ |
| 53 | }, |
| 54 | }; |
| 55 | |
| 56 | static struct v4l2_mbus_framefmt m5mols_default_ffmt[M5MOLS_RESTYPE_MAX] = { |
| 57 | [M5MOLS_RESTYPE_MONITOR] = { |
| 58 | .width = 1920, |
| 59 | .height = 1080, |
| 60 | .code = V4L2_MBUS_FMT_VYUY8_2X8, |
| 61 | .field = V4L2_FIELD_NONE, |
| 62 | .colorspace = V4L2_COLORSPACE_JPEG, |
| 63 | }, |
| 64 | [M5MOLS_RESTYPE_CAPTURE] = { |
| 65 | .width = 1920, |
| 66 | .height = 1080, |
| 67 | .code = V4L2_MBUS_FMT_JPEG_1X8, |
| 68 | .field = V4L2_FIELD_NONE, |
| 69 | .colorspace = V4L2_COLORSPACE_JPEG, |
| 70 | }, |
| 71 | }; |
| 72 | #define SIZE_DEFAULT_FFMT ARRAY_SIZE(m5mols_default_ffmt) |
| 73 | |
| 74 | static const struct m5mols_resolution m5mols_reg_res[] = { |
| 75 | { 0x01, M5MOLS_RESTYPE_MONITOR, 128, 96 }, /* SUB-QCIF */ |
| 76 | { 0x03, M5MOLS_RESTYPE_MONITOR, 160, 120 }, /* QQVGA */ |
| 77 | { 0x05, M5MOLS_RESTYPE_MONITOR, 176, 144 }, /* QCIF */ |
| 78 | { 0x06, M5MOLS_RESTYPE_MONITOR, 176, 176 }, |
| 79 | { 0x08, M5MOLS_RESTYPE_MONITOR, 240, 320 }, /* QVGA */ |
| 80 | { 0x09, M5MOLS_RESTYPE_MONITOR, 320, 240 }, /* QVGA */ |
| 81 | { 0x0c, M5MOLS_RESTYPE_MONITOR, 240, 400 }, /* WQVGA */ |
| 82 | { 0x0d, M5MOLS_RESTYPE_MONITOR, 400, 240 }, /* WQVGA */ |
| 83 | { 0x0e, M5MOLS_RESTYPE_MONITOR, 352, 288 }, /* CIF */ |
| 84 | { 0x13, M5MOLS_RESTYPE_MONITOR, 480, 360 }, |
| 85 | { 0x15, M5MOLS_RESTYPE_MONITOR, 640, 360 }, /* qHD */ |
| 86 | { 0x17, M5MOLS_RESTYPE_MONITOR, 640, 480 }, /* VGA */ |
| 87 | { 0x18, M5MOLS_RESTYPE_MONITOR, 720, 480 }, |
| 88 | { 0x1a, M5MOLS_RESTYPE_MONITOR, 800, 480 }, /* WVGA */ |
| 89 | { 0x1f, M5MOLS_RESTYPE_MONITOR, 800, 600 }, /* SVGA */ |
| 90 | { 0x21, M5MOLS_RESTYPE_MONITOR, 1280, 720 }, /* HD */ |
| 91 | { 0x25, M5MOLS_RESTYPE_MONITOR, 1920, 1080 }, /* 1080p */ |
| 92 | { 0x29, M5MOLS_RESTYPE_MONITOR, 3264, 2448 }, /* 2.63fps 8M */ |
| 93 | { 0x39, M5MOLS_RESTYPE_MONITOR, 800, 602 }, /* AHS_MON debug */ |
| 94 | |
| 95 | { 0x02, M5MOLS_RESTYPE_CAPTURE, 320, 240 }, /* QVGA */ |
| 96 | { 0x04, M5MOLS_RESTYPE_CAPTURE, 400, 240 }, /* WQVGA */ |
| 97 | { 0x07, M5MOLS_RESTYPE_CAPTURE, 480, 360 }, |
| 98 | { 0x08, M5MOLS_RESTYPE_CAPTURE, 640, 360 }, /* qHD */ |
| 99 | { 0x09, M5MOLS_RESTYPE_CAPTURE, 640, 480 }, /* VGA */ |
| 100 | { 0x0a, M5MOLS_RESTYPE_CAPTURE, 800, 480 }, /* WVGA */ |
| 101 | { 0x10, M5MOLS_RESTYPE_CAPTURE, 1280, 720 }, /* HD */ |
| 102 | { 0x14, M5MOLS_RESTYPE_CAPTURE, 1280, 960 }, /* 1M */ |
| 103 | { 0x17, M5MOLS_RESTYPE_CAPTURE, 1600, 1200 }, /* 2M */ |
| 104 | { 0x19, M5MOLS_RESTYPE_CAPTURE, 1920, 1080 }, /* Full-HD */ |
| 105 | { 0x1a, M5MOLS_RESTYPE_CAPTURE, 2048, 1152 }, /* 3Mega */ |
| 106 | { 0x1b, M5MOLS_RESTYPE_CAPTURE, 2048, 1536 }, |
| 107 | { 0x1c, M5MOLS_RESTYPE_CAPTURE, 2560, 1440 }, /* 4Mega */ |
| 108 | { 0x1d, M5MOLS_RESTYPE_CAPTURE, 2560, 1536 }, |
| 109 | { 0x1f, M5MOLS_RESTYPE_CAPTURE, 2560, 1920 }, /* 5Mega */ |
| 110 | { 0x21, M5MOLS_RESTYPE_CAPTURE, 3264, 1836 }, /* 6Mega */ |
| 111 | { 0x22, M5MOLS_RESTYPE_CAPTURE, 3264, 1960 }, |
| 112 | { 0x25, M5MOLS_RESTYPE_CAPTURE, 3264, 2448 }, /* 8Mega */ |
| 113 | }; |
| 114 | |
| 115 | /** |
| 116 | * m5mols_swap_byte - an byte array to integer conversion function |
| 117 | * @size: size in bytes of I2C packet defined in the M-5MOLS datasheet |
| 118 | * |
| 119 | * Convert I2C data byte array with performing any required byte |
| 120 | * reordering to assure proper values for each data type, regardless |
| 121 | * of the architecture endianness. |
| 122 | */ |
| 123 | static u32 m5mols_swap_byte(u8 *data, u8 length) |
| 124 | { |
| 125 | if (length == 1) |
| 126 | return *data; |
| 127 | else if (length == 2) |
| 128 | return be16_to_cpu(*((u16 *)data)); |
| 129 | else |
| 130 | return be32_to_cpu(*((u32 *)data)); |
| 131 | } |
| 132 | |
| 133 | /** |
| 134 | * m5mols_read - I2C read function |
| 135 | * @reg: combination of size, category and command for the I2C packet |
HeungJun, Kim | 57644f5 | 2011-05-31 03:44:19 -0300 | [diff] [blame] | 136 | * @size: desired size of I2C packet |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 137 | * @val: read value |
HeungJun Kim | 0f2ee1d | 2011-12-03 11:47:40 -0300 | [diff] [blame] | 138 | * |
| 139 | * Returns 0 on success, or else negative errno. |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 140 | */ |
HeungJun, Kim | 57644f5 | 2011-05-31 03:44:19 -0300 | [diff] [blame] | 141 | static int m5mols_read(struct v4l2_subdev *sd, u32 size, u32 reg, u32 *val) |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 142 | { |
| 143 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
HeungJun Kim | 0f2ee1d | 2011-12-03 11:47:40 -0300 | [diff] [blame] | 144 | struct m5mols_info *info = to_m5mols(sd); |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 145 | u8 rbuf[M5MOLS_I2C_MAX_SIZE + 1]; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 146 | u8 category = I2C_CATEGORY(reg); |
| 147 | u8 cmd = I2C_COMMAND(reg); |
| 148 | struct i2c_msg msg[2]; |
| 149 | u8 wbuf[5]; |
| 150 | int ret; |
| 151 | |
| 152 | if (!client->adapter) |
| 153 | return -ENODEV; |
| 154 | |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 155 | msg[0].addr = client->addr; |
| 156 | msg[0].flags = 0; |
| 157 | msg[0].len = 5; |
| 158 | msg[0].buf = wbuf; |
| 159 | wbuf[0] = 5; |
| 160 | wbuf[1] = M5MOLS_BYTE_READ; |
| 161 | wbuf[2] = category; |
| 162 | wbuf[3] = cmd; |
| 163 | wbuf[4] = size; |
| 164 | |
| 165 | msg[1].addr = client->addr; |
| 166 | msg[1].flags = I2C_M_RD; |
| 167 | msg[1].len = size + 1; |
| 168 | msg[1].buf = rbuf; |
| 169 | |
| 170 | /* minimum stabilization time */ |
| 171 | usleep_range(200, 200); |
| 172 | |
| 173 | ret = i2c_transfer(client->adapter, msg, 2); |
HeungJun Kim | 0f2ee1d | 2011-12-03 11:47:40 -0300 | [diff] [blame] | 174 | |
| 175 | if (ret == 2) { |
| 176 | *val = m5mols_swap_byte(&rbuf[1], size); |
| 177 | return 0; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 178 | } |
| 179 | |
HeungJun Kim | 0f2ee1d | 2011-12-03 11:47:40 -0300 | [diff] [blame] | 180 | if (info->isp_ready) |
| 181 | v4l2_err(sd, "read failed: size:%d cat:%02x cmd:%02x. %d\n", |
| 182 | size, category, cmd, ret); |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 183 | |
HeungJun Kim | 0f2ee1d | 2011-12-03 11:47:40 -0300 | [diff] [blame] | 184 | return ret < 0 ? ret : -EIO; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 185 | } |
| 186 | |
HeungJun, Kim | 57644f5 | 2011-05-31 03:44:19 -0300 | [diff] [blame] | 187 | int m5mols_read_u8(struct v4l2_subdev *sd, u32 reg, u8 *val) |
| 188 | { |
| 189 | u32 val_32; |
| 190 | int ret; |
| 191 | |
| 192 | if (I2C_SIZE(reg) != 1) { |
| 193 | v4l2_err(sd, "Wrong data size\n"); |
| 194 | return -EINVAL; |
| 195 | } |
| 196 | |
| 197 | ret = m5mols_read(sd, I2C_SIZE(reg), reg, &val_32); |
| 198 | if (ret) |
| 199 | return ret; |
| 200 | |
| 201 | *val = (u8)val_32; |
| 202 | return ret; |
| 203 | } |
| 204 | |
| 205 | int m5mols_read_u16(struct v4l2_subdev *sd, u32 reg, u16 *val) |
| 206 | { |
| 207 | u32 val_32; |
| 208 | int ret; |
| 209 | |
| 210 | if (I2C_SIZE(reg) != 2) { |
| 211 | v4l2_err(sd, "Wrong data size\n"); |
| 212 | return -EINVAL; |
| 213 | } |
| 214 | |
| 215 | ret = m5mols_read(sd, I2C_SIZE(reg), reg, &val_32); |
| 216 | if (ret) |
| 217 | return ret; |
| 218 | |
| 219 | *val = (u16)val_32; |
| 220 | return ret; |
| 221 | } |
| 222 | |
| 223 | int m5mols_read_u32(struct v4l2_subdev *sd, u32 reg, u32 *val) |
| 224 | { |
| 225 | if (I2C_SIZE(reg) != 4) { |
| 226 | v4l2_err(sd, "Wrong data size\n"); |
| 227 | return -EINVAL; |
| 228 | } |
| 229 | |
| 230 | return m5mols_read(sd, I2C_SIZE(reg), reg, val); |
| 231 | } |
| 232 | |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 233 | /** |
| 234 | * m5mols_write - I2C command write function |
| 235 | * @reg: combination of size, category and command for the I2C packet |
| 236 | * @val: value to write |
HeungJun Kim | 0f2ee1d | 2011-12-03 11:47:40 -0300 | [diff] [blame] | 237 | * |
| 238 | * Returns 0 on success, or else negative errno. |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 239 | */ |
| 240 | int m5mols_write(struct v4l2_subdev *sd, u32 reg, u32 val) |
| 241 | { |
| 242 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
HeungJun Kim | 0f2ee1d | 2011-12-03 11:47:40 -0300 | [diff] [blame] | 243 | struct m5mols_info *info = to_m5mols(sd); |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 244 | u8 wbuf[M5MOLS_I2C_MAX_SIZE + 4]; |
| 245 | u8 category = I2C_CATEGORY(reg); |
| 246 | u8 cmd = I2C_COMMAND(reg); |
| 247 | u8 size = I2C_SIZE(reg); |
| 248 | u32 *buf = (u32 *)&wbuf[4]; |
| 249 | struct i2c_msg msg[1]; |
| 250 | int ret; |
| 251 | |
| 252 | if (!client->adapter) |
| 253 | return -ENODEV; |
| 254 | |
| 255 | if (size != 1 && size != 2 && size != 4) { |
| 256 | v4l2_err(sd, "Wrong data size\n"); |
| 257 | return -EINVAL; |
| 258 | } |
| 259 | |
| 260 | msg->addr = client->addr; |
| 261 | msg->flags = 0; |
| 262 | msg->len = (u16)size + 4; |
| 263 | msg->buf = wbuf; |
| 264 | wbuf[0] = size + 4; |
| 265 | wbuf[1] = M5MOLS_BYTE_WRITE; |
| 266 | wbuf[2] = category; |
| 267 | wbuf[3] = cmd; |
| 268 | |
| 269 | *buf = m5mols_swap_byte((u8 *)&val, size); |
| 270 | |
| 271 | usleep_range(200, 200); |
| 272 | |
| 273 | ret = i2c_transfer(client->adapter, msg, 1); |
HeungJun Kim | 0f2ee1d | 2011-12-03 11:47:40 -0300 | [diff] [blame] | 274 | if (ret == 1) |
| 275 | return 0; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 276 | |
HeungJun Kim | 0f2ee1d | 2011-12-03 11:47:40 -0300 | [diff] [blame] | 277 | if (info->isp_ready) |
| 278 | v4l2_err(sd, "write failed: cat:%02x cmd:%02x ret:%d\n", |
| 279 | category, cmd, ret); |
| 280 | |
| 281 | return ret < 0 ? ret : -EIO; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 282 | } |
| 283 | |
HeungJun Kim | 575d625 | 2011-12-12 08:04:03 -0300 | [diff] [blame] | 284 | /** |
| 285 | * m5mols_busy_wait - Busy waiting with I2C register polling |
| 286 | * @reg: the I2C_REG() address of an 8-bit status register to check |
| 287 | * @value: expected status register value |
| 288 | * @mask: bit mask for the read status register value |
| 289 | * @timeout: timeout in miliseconds, or -1 for default timeout |
| 290 | * |
| 291 | * The @reg register value is ORed with @mask before comparing with @value. |
| 292 | * |
| 293 | * Return: 0 if the requested condition became true within less than |
| 294 | * @timeout ms, or else negative errno. |
| 295 | */ |
| 296 | int m5mols_busy_wait(struct v4l2_subdev *sd, u32 reg, u32 value, u32 mask, |
| 297 | int timeout) |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 298 | { |
HeungJun Kim | 575d625 | 2011-12-12 08:04:03 -0300 | [diff] [blame] | 299 | int ms = timeout < 0 ? M5MOLS_BUSY_WAIT_DEF_TIMEOUT : timeout; |
| 300 | unsigned long end = jiffies + msecs_to_jiffies(ms); |
| 301 | u8 status; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 302 | |
HeungJun Kim | 575d625 | 2011-12-12 08:04:03 -0300 | [diff] [blame] | 303 | do { |
| 304 | int ret = m5mols_read_u8(sd, reg, &status); |
| 305 | |
| 306 | if (ret < 0 && !(mask & M5MOLS_I2C_RDY_WAIT_FL)) |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 307 | return ret; |
HeungJun Kim | 575d625 | 2011-12-12 08:04:03 -0300 | [diff] [blame] | 308 | if (!ret && (status & mask & 0xff) == (value & 0xff)) |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 309 | return 0; |
HeungJun Kim | 575d625 | 2011-12-12 08:04:03 -0300 | [diff] [blame] | 310 | usleep_range(100, 250); |
| 311 | } while (ms > 0 && time_is_after_jiffies(end)); |
| 312 | |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 313 | return -EBUSY; |
| 314 | } |
| 315 | |
| 316 | /** |
| 317 | * m5mols_enable_interrupt - Clear interrupt pending bits and unmask interrupts |
| 318 | * |
| 319 | * Before writing desired interrupt value the INT_FACTOR register should |
| 320 | * be read to clear pending interrupts. |
| 321 | */ |
HeungJun, Kim | 57644f5 | 2011-05-31 03:44:19 -0300 | [diff] [blame] | 322 | int m5mols_enable_interrupt(struct v4l2_subdev *sd, u8 reg) |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 323 | { |
| 324 | struct m5mols_info *info = to_m5mols(sd); |
HeungJun, Kim | 57644f5 | 2011-05-31 03:44:19 -0300 | [diff] [blame] | 325 | u8 mask = is_available_af(info) ? REG_INT_AF : 0; |
| 326 | u8 dummy; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 327 | int ret; |
| 328 | |
HeungJun, Kim | 57644f5 | 2011-05-31 03:44:19 -0300 | [diff] [blame] | 329 | ret = m5mols_read_u8(sd, SYSTEM_INT_FACTOR, &dummy); |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 330 | if (!ret) |
| 331 | ret = m5mols_write(sd, SYSTEM_INT_ENABLE, reg & ~mask); |
| 332 | return ret; |
| 333 | } |
| 334 | |
HeungJun Kim | ce808a4 | 2011-12-02 21:53:20 -0300 | [diff] [blame] | 335 | int m5mols_wait_interrupt(struct v4l2_subdev *sd, u8 irq_mask, u32 timeout) |
| 336 | { |
| 337 | struct m5mols_info *info = to_m5mols(sd); |
| 338 | |
| 339 | int ret = wait_event_interruptible_timeout(info->irq_waitq, |
| 340 | atomic_add_unless(&info->irq_done, -1, 0), |
| 341 | msecs_to_jiffies(timeout)); |
| 342 | if (ret <= 0) |
| 343 | return ret ? ret : -ETIMEDOUT; |
| 344 | |
| 345 | return m5mols_busy_wait(sd, SYSTEM_INT_FACTOR, irq_mask, |
| 346 | M5MOLS_I2C_RDY_WAIT_FL | irq_mask, -1); |
| 347 | } |
| 348 | |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 349 | /** |
| 350 | * m5mols_reg_mode - Write the mode and check busy status |
| 351 | * |
| 352 | * It always accompanies a little delay changing the M-5MOLS mode, so it is |
| 353 | * needed checking current busy status to guarantee right mode. |
| 354 | */ |
HeungJun, Kim | 57644f5 | 2011-05-31 03:44:19 -0300 | [diff] [blame] | 355 | static int m5mols_reg_mode(struct v4l2_subdev *sd, u8 mode) |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 356 | { |
| 357 | int ret = m5mols_write(sd, SYSTEM_SYSMODE, mode); |
HeungJun Kim | 575d625 | 2011-12-12 08:04:03 -0300 | [diff] [blame] | 358 | if (ret < 0) |
| 359 | return ret; |
| 360 | return m5mols_busy_wait(sd, SYSTEM_SYSMODE, mode, 0xff, |
| 361 | M5MOLS_MODE_CHANGE_TIMEOUT); |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 362 | } |
| 363 | |
| 364 | /** |
Sylwester Nawrocki | 3c5da0b | 2012-04-09 13:51:56 -0300 | [diff] [blame] | 365 | * m5mols_set_mode - set the M-5MOLS controller mode |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 366 | * @mode: the required operation mode |
| 367 | * |
| 368 | * The commands of M-5MOLS are grouped into specific modes. Each functionality |
Sylwester Nawrocki | 3c5da0b | 2012-04-09 13:51:56 -0300 | [diff] [blame] | 369 | * can be guaranteed only when the sensor is operating in mode which a command |
| 370 | * belongs to. |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 371 | */ |
Sylwester Nawrocki | 3c5da0b | 2012-04-09 13:51:56 -0300 | [diff] [blame] | 372 | int m5mols_set_mode(struct m5mols_info *info, u8 mode) |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 373 | { |
| 374 | struct v4l2_subdev *sd = &info->sd; |
| 375 | int ret = -EINVAL; |
HeungJun, Kim | 57644f5 | 2011-05-31 03:44:19 -0300 | [diff] [blame] | 376 | u8 reg; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 377 | |
Thomas Jarosch | a32390d | 2011-10-15 18:38:40 -0300 | [diff] [blame] | 378 | if (mode < REG_PARAMETER || mode > REG_CAPTURE) |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 379 | return ret; |
| 380 | |
HeungJun, Kim | 57644f5 | 2011-05-31 03:44:19 -0300 | [diff] [blame] | 381 | ret = m5mols_read_u8(sd, SYSTEM_SYSMODE, ®); |
Sylwester Nawrocki | 630caa2 | 2011-12-02 21:55:04 -0300 | [diff] [blame] | 382 | if (ret || reg == mode) |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 383 | return ret; |
| 384 | |
| 385 | switch (reg) { |
| 386 | case REG_PARAMETER: |
| 387 | ret = m5mols_reg_mode(sd, REG_MONITOR); |
Sylwester Nawrocki | 630caa2 | 2011-12-02 21:55:04 -0300 | [diff] [blame] | 388 | if (mode == REG_MONITOR) |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 389 | break; |
| 390 | if (!ret) |
| 391 | ret = m5mols_reg_mode(sd, REG_CAPTURE); |
| 392 | break; |
| 393 | |
| 394 | case REG_MONITOR: |
| 395 | if (mode == REG_PARAMETER) { |
| 396 | ret = m5mols_reg_mode(sd, REG_PARAMETER); |
| 397 | break; |
| 398 | } |
| 399 | |
| 400 | ret = m5mols_reg_mode(sd, REG_CAPTURE); |
| 401 | break; |
| 402 | |
| 403 | case REG_CAPTURE: |
| 404 | ret = m5mols_reg_mode(sd, REG_MONITOR); |
Sylwester Nawrocki | 630caa2 | 2011-12-02 21:55:04 -0300 | [diff] [blame] | 405 | if (mode == REG_MONITOR) |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 406 | break; |
| 407 | if (!ret) |
| 408 | ret = m5mols_reg_mode(sd, REG_PARAMETER); |
| 409 | break; |
| 410 | |
| 411 | default: |
| 412 | v4l2_warn(sd, "Wrong mode: %d\n", mode); |
| 413 | } |
| 414 | |
| 415 | if (!ret) |
| 416 | info->mode = mode; |
| 417 | |
| 418 | return ret; |
| 419 | } |
| 420 | |
| 421 | /** |
| 422 | * m5mols_get_version - retrieve full revisions information of M-5MOLS |
| 423 | * |
| 424 | * The version information includes revisions of hardware and firmware, |
| 425 | * AutoFocus alghorithm version and the version string. |
| 426 | */ |
| 427 | static int m5mols_get_version(struct v4l2_subdev *sd) |
| 428 | { |
| 429 | struct m5mols_info *info = to_m5mols(sd); |
HeungJun, Kim | a6354d2 | 2011-06-07 01:59:44 -0300 | [diff] [blame] | 430 | struct m5mols_version *ver = &info->ver; |
| 431 | u8 *str = ver->str; |
| 432 | int i; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 433 | int ret; |
| 434 | |
HeungJun, Kim | a6354d2 | 2011-06-07 01:59:44 -0300 | [diff] [blame] | 435 | ret = m5mols_read_u8(sd, SYSTEM_VER_CUSTOMER, &ver->customer); |
| 436 | if (!ret) |
| 437 | ret = m5mols_read_u8(sd, SYSTEM_VER_PROJECT, &ver->project); |
| 438 | if (!ret) |
| 439 | ret = m5mols_read_u16(sd, SYSTEM_VER_FIRMWARE, &ver->fw); |
| 440 | if (!ret) |
| 441 | ret = m5mols_read_u16(sd, SYSTEM_VER_HARDWARE, &ver->hw); |
| 442 | if (!ret) |
| 443 | ret = m5mols_read_u16(sd, SYSTEM_VER_PARAMETER, &ver->param); |
| 444 | if (!ret) |
| 445 | ret = m5mols_read_u16(sd, SYSTEM_VER_AWB, &ver->awb); |
| 446 | if (!ret) |
| 447 | ret = m5mols_read_u8(sd, AF_VERSION, &ver->af); |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 448 | if (ret) |
| 449 | return ret; |
| 450 | |
HeungJun, Kim | a6354d2 | 2011-06-07 01:59:44 -0300 | [diff] [blame] | 451 | for (i = 0; i < VERSION_STRING_SIZE; i++) { |
| 452 | ret = m5mols_read_u8(sd, SYSTEM_VER_STRING, &str[i]); |
| 453 | if (ret) |
| 454 | return ret; |
| 455 | } |
| 456 | |
| 457 | ver->fw = be16_to_cpu(ver->fw); |
| 458 | ver->hw = be16_to_cpu(ver->hw); |
| 459 | ver->param = be16_to_cpu(ver->param); |
| 460 | ver->awb = be16_to_cpu(ver->awb); |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 461 | |
| 462 | v4l2_info(sd, "Manufacturer\t[%s]\n", |
| 463 | is_manufacturer(info, REG_SAMSUNG_ELECTRO) ? |
| 464 | "Samsung Electro-Machanics" : |
| 465 | is_manufacturer(info, REG_SAMSUNG_OPTICS) ? |
| 466 | "Samsung Fiber-Optics" : |
| 467 | is_manufacturer(info, REG_SAMSUNG_TECHWIN) ? |
| 468 | "Samsung Techwin" : "None"); |
| 469 | v4l2_info(sd, "Customer/Project\t[0x%02x/0x%02x]\n", |
| 470 | info->ver.customer, info->ver.project); |
| 471 | |
| 472 | if (!is_available_af(info)) |
| 473 | v4l2_info(sd, "No support Auto Focus on this firmware\n"); |
| 474 | |
| 475 | return ret; |
| 476 | } |
| 477 | |
| 478 | /** |
| 479 | * __find_restype - Lookup M-5MOLS resolution type according to pixel code |
| 480 | * @code: pixel code |
| 481 | */ |
| 482 | static enum m5mols_restype __find_restype(enum v4l2_mbus_pixelcode code) |
| 483 | { |
| 484 | enum m5mols_restype type = M5MOLS_RESTYPE_MONITOR; |
| 485 | |
| 486 | do { |
| 487 | if (code == m5mols_default_ffmt[type].code) |
| 488 | return type; |
| 489 | } while (type++ != SIZE_DEFAULT_FFMT); |
| 490 | |
| 491 | return 0; |
| 492 | } |
| 493 | |
| 494 | /** |
| 495 | * __find_resolution - Lookup preset and type of M-5MOLS's resolution |
| 496 | * @mf: pixel format to find/negotiate the resolution preset for |
| 497 | * @type: M-5MOLS resolution type |
| 498 | * @resolution: M-5MOLS resolution preset register value |
| 499 | * |
| 500 | * Find nearest resolution matching resolution preset and adjust mf |
| 501 | * to supported values. |
| 502 | */ |
| 503 | static int __find_resolution(struct v4l2_subdev *sd, |
| 504 | struct v4l2_mbus_framefmt *mf, |
| 505 | enum m5mols_restype *type, |
| 506 | u32 *resolution) |
| 507 | { |
| 508 | const struct m5mols_resolution *fsize = &m5mols_reg_res[0]; |
| 509 | const struct m5mols_resolution *match = NULL; |
| 510 | enum m5mols_restype stype = __find_restype(mf->code); |
| 511 | int i = ARRAY_SIZE(m5mols_reg_res); |
| 512 | unsigned int min_err = ~0; |
| 513 | |
| 514 | while (i--) { |
| 515 | int err; |
| 516 | if (stype == fsize->type) { |
| 517 | err = abs(fsize->width - mf->width) |
| 518 | + abs(fsize->height - mf->height); |
| 519 | |
| 520 | if (err < min_err) { |
| 521 | min_err = err; |
| 522 | match = fsize; |
| 523 | } |
| 524 | } |
| 525 | fsize++; |
| 526 | } |
| 527 | if (match) { |
| 528 | mf->width = match->width; |
| 529 | mf->height = match->height; |
| 530 | *resolution = match->reg; |
| 531 | *type = stype; |
| 532 | return 0; |
| 533 | } |
| 534 | |
| 535 | return -EINVAL; |
| 536 | } |
| 537 | |
| 538 | static struct v4l2_mbus_framefmt *__find_format(struct m5mols_info *info, |
| 539 | struct v4l2_subdev_fh *fh, |
| 540 | enum v4l2_subdev_format_whence which, |
| 541 | enum m5mols_restype type) |
| 542 | { |
| 543 | if (which == V4L2_SUBDEV_FORMAT_TRY) |
| 544 | return fh ? v4l2_subdev_get_try_format(fh, 0) : NULL; |
| 545 | |
| 546 | return &info->ffmt[type]; |
| 547 | } |
| 548 | |
| 549 | static int m5mols_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, |
| 550 | struct v4l2_subdev_format *fmt) |
| 551 | { |
| 552 | struct m5mols_info *info = to_m5mols(sd); |
| 553 | struct v4l2_mbus_framefmt *format; |
Sylwester Nawrocki | 5565a2a | 2012-09-20 08:16:45 -0300 | [diff] [blame] | 554 | int ret = 0; |
| 555 | |
| 556 | mutex_lock(&info->lock); |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 557 | |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 558 | format = __find_format(info, fh, fmt->which, info->res_type); |
Sylwester Nawrocki | 12861dc | 2012-12-05 12:49:12 -0300 | [diff] [blame] | 559 | if (format) |
Sylwester Nawrocki | 5565a2a | 2012-09-20 08:16:45 -0300 | [diff] [blame] | 560 | fmt->format = *format; |
| 561 | else |
| 562 | ret = -EINVAL; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 563 | |
Sylwester Nawrocki | 5565a2a | 2012-09-20 08:16:45 -0300 | [diff] [blame] | 564 | mutex_unlock(&info->lock); |
| 565 | return ret; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 566 | } |
| 567 | |
| 568 | static int m5mols_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, |
| 569 | struct v4l2_subdev_format *fmt) |
| 570 | { |
| 571 | struct m5mols_info *info = to_m5mols(sd); |
| 572 | struct v4l2_mbus_framefmt *format = &fmt->format; |
| 573 | struct v4l2_mbus_framefmt *sfmt; |
| 574 | enum m5mols_restype type; |
| 575 | u32 resolution = 0; |
| 576 | int ret; |
| 577 | |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 578 | ret = __find_resolution(sd, format, &type, &resolution); |
| 579 | if (ret < 0) |
| 580 | return ret; |
| 581 | |
| 582 | sfmt = __find_format(info, fh, fmt->which, type); |
| 583 | if (!sfmt) |
| 584 | return 0; |
| 585 | |
Sylwester Nawrocki | 5565a2a | 2012-09-20 08:16:45 -0300 | [diff] [blame] | 586 | mutex_lock(&info->lock); |
Sylwester Nawrocki | fbe78dd | 2011-11-16 08:19:58 -0300 | [diff] [blame] | 587 | |
| 588 | format->code = m5mols_default_ffmt[type].code; |
| 589 | format->colorspace = V4L2_COLORSPACE_JPEG; |
| 590 | format->field = V4L2_FIELD_NONE; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 591 | |
| 592 | if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) { |
Sylwester Nawrocki | fbe78dd | 2011-11-16 08:19:58 -0300 | [diff] [blame] | 593 | *sfmt = *format; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 594 | info->resolution = resolution; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 595 | info->res_type = type; |
| 596 | } |
| 597 | |
Sylwester Nawrocki | 5565a2a | 2012-09-20 08:16:45 -0300 | [diff] [blame] | 598 | mutex_unlock(&info->lock); |
| 599 | return ret; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 600 | } |
| 601 | |
Sylwester Nawrocki | ab7ef22 | 2012-09-18 06:18:43 -0300 | [diff] [blame] | 602 | static int m5mols_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad, |
| 603 | struct v4l2_mbus_frame_desc *fd) |
| 604 | { |
| 605 | struct m5mols_info *info = to_m5mols(sd); |
| 606 | |
| 607 | if (pad != 0 || fd == NULL) |
| 608 | return -EINVAL; |
| 609 | |
| 610 | mutex_lock(&info->lock); |
| 611 | /* |
| 612 | * .get_frame_desc is only used for compressed formats, |
| 613 | * thus we always return the capture frame parameters here. |
| 614 | */ |
| 615 | fd->entry[0].length = info->cap.buf_size; |
| 616 | fd->entry[0].pixelcode = info->ffmt[M5MOLS_RESTYPE_CAPTURE].code; |
| 617 | mutex_unlock(&info->lock); |
| 618 | |
| 619 | fd->entry[0].flags = V4L2_MBUS_FRAME_DESC_FL_LEN_MAX; |
| 620 | fd->num_entries = 1; |
| 621 | |
| 622 | return 0; |
| 623 | } |
| 624 | |
| 625 | static int m5mols_set_frame_desc(struct v4l2_subdev *sd, unsigned int pad, |
| 626 | struct v4l2_mbus_frame_desc *fd) |
| 627 | { |
| 628 | struct m5mols_info *info = to_m5mols(sd); |
| 629 | struct v4l2_mbus_framefmt *mf = &info->ffmt[M5MOLS_RESTYPE_CAPTURE]; |
| 630 | |
| 631 | if (pad != 0 || fd == NULL) |
| 632 | return -EINVAL; |
| 633 | |
| 634 | fd->entry[0].flags = V4L2_MBUS_FRAME_DESC_FL_LEN_MAX; |
| 635 | fd->num_entries = 1; |
| 636 | fd->entry[0].length = clamp_t(u32, fd->entry[0].length, |
| 637 | mf->width * mf->height, |
| 638 | M5MOLS_MAIN_JPEG_SIZE_MAX); |
| 639 | mutex_lock(&info->lock); |
| 640 | info->cap.buf_size = fd->entry[0].length; |
| 641 | mutex_unlock(&info->lock); |
| 642 | |
| 643 | return 0; |
| 644 | } |
| 645 | |
| 646 | |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 647 | static int m5mols_enum_mbus_code(struct v4l2_subdev *sd, |
| 648 | struct v4l2_subdev_fh *fh, |
| 649 | struct v4l2_subdev_mbus_code_enum *code) |
| 650 | { |
| 651 | if (!code || code->index >= SIZE_DEFAULT_FFMT) |
| 652 | return -EINVAL; |
| 653 | |
| 654 | code->code = m5mols_default_ffmt[code->index].code; |
| 655 | |
| 656 | return 0; |
| 657 | } |
| 658 | |
| 659 | static struct v4l2_subdev_pad_ops m5mols_pad_ops = { |
| 660 | .enum_mbus_code = m5mols_enum_mbus_code, |
| 661 | .get_fmt = m5mols_get_fmt, |
| 662 | .set_fmt = m5mols_set_fmt, |
Sylwester Nawrocki | ab7ef22 | 2012-09-18 06:18:43 -0300 | [diff] [blame] | 663 | .get_frame_desc = m5mols_get_frame_desc, |
| 664 | .set_frame_desc = m5mols_set_frame_desc, |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 665 | }; |
| 666 | |
| 667 | /** |
Sylwester Nawrocki | 5d4294b | 2011-12-12 15:45:56 -0300 | [diff] [blame] | 668 | * m5mols_restore_controls - Apply current control values to the registers |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 669 | * |
Sylwester Nawrocki | 5d4294b | 2011-12-12 15:45:56 -0300 | [diff] [blame] | 670 | * m5mols_do_scenemode() handles all parameters for which there is yet no |
| 671 | * individual control. It should be replaced at some point by setting each |
| 672 | * control individually, in required register set up order. |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 673 | */ |
Sylwester Nawrocki | 5d4294b | 2011-12-12 15:45:56 -0300 | [diff] [blame] | 674 | int m5mols_restore_controls(struct m5mols_info *info) |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 675 | { |
Sylwester Nawrocki | 5d4294b | 2011-12-12 15:45:56 -0300 | [diff] [blame] | 676 | int ret; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 677 | |
Sylwester Nawrocki | 5d4294b | 2011-12-12 15:45:56 -0300 | [diff] [blame] | 678 | if (info->ctrl_sync) |
| 679 | return 0; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 680 | |
Sylwester Nawrocki | 5d4294b | 2011-12-12 15:45:56 -0300 | [diff] [blame] | 681 | ret = m5mols_do_scenemode(info, REG_SCENE_NORMAL); |
| 682 | if (ret) |
| 683 | return ret; |
| 684 | |
| 685 | ret = v4l2_ctrl_handler_setup(&info->handle); |
| 686 | info->ctrl_sync = !ret; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 687 | |
| 688 | return ret; |
| 689 | } |
| 690 | |
| 691 | /** |
| 692 | * m5mols_start_monitor - Start the monitor mode |
| 693 | * |
| 694 | * Before applying the controls setup the resolution and frame rate |
| 695 | * in PARAMETER mode, and then switch over to MONITOR mode. |
| 696 | */ |
| 697 | static int m5mols_start_monitor(struct m5mols_info *info) |
| 698 | { |
| 699 | struct v4l2_subdev *sd = &info->sd; |
| 700 | int ret; |
| 701 | |
Sylwester Nawrocki | 3c5da0b | 2012-04-09 13:51:56 -0300 | [diff] [blame] | 702 | ret = m5mols_set_mode(info, REG_PARAMETER); |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 703 | if (!ret) |
| 704 | ret = m5mols_write(sd, PARM_MON_SIZE, info->resolution); |
| 705 | if (!ret) |
| 706 | ret = m5mols_write(sd, PARM_MON_FPS, REG_FPS_30); |
| 707 | if (!ret) |
Sylwester Nawrocki | 3c5da0b | 2012-04-09 13:51:56 -0300 | [diff] [blame] | 708 | ret = m5mols_set_mode(info, REG_MONITOR); |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 709 | if (!ret) |
Sylwester Nawrocki | 5d4294b | 2011-12-12 15:45:56 -0300 | [diff] [blame] | 710 | ret = m5mols_restore_controls(info); |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 711 | |
| 712 | return ret; |
| 713 | } |
| 714 | |
| 715 | static int m5mols_s_stream(struct v4l2_subdev *sd, int enable) |
| 716 | { |
| 717 | struct m5mols_info *info = to_m5mols(sd); |
Sylwester Nawrocki | 5565a2a | 2012-09-20 08:16:45 -0300 | [diff] [blame] | 718 | u32 code; |
| 719 | int ret; |
| 720 | |
| 721 | mutex_lock(&info->lock); |
| 722 | code = info->ffmt[info->res_type].code; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 723 | |
| 724 | if (enable) { |
Sylwester Nawrocki | fbe78dd | 2011-11-16 08:19:58 -0300 | [diff] [blame] | 725 | if (is_code(code, M5MOLS_RESTYPE_MONITOR)) |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 726 | ret = m5mols_start_monitor(info); |
Andrzej Hajda | 6ba4d05 | 2013-02-27 08:21:07 -0300 | [diff] [blame] | 727 | else if (is_code(code, M5MOLS_RESTYPE_CAPTURE)) |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 728 | ret = m5mols_start_capture(info); |
Sylwester Nawrocki | 5565a2a | 2012-09-20 08:16:45 -0300 | [diff] [blame] | 729 | else |
| 730 | ret = -EINVAL; |
| 731 | } else { |
| 732 | ret = m5mols_set_mode(info, REG_PARAMETER); |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 733 | } |
| 734 | |
Sylwester Nawrocki | 5565a2a | 2012-09-20 08:16:45 -0300 | [diff] [blame] | 735 | mutex_unlock(&info->lock); |
| 736 | return ret; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 737 | } |
| 738 | |
| 739 | static const struct v4l2_subdev_video_ops m5mols_video_ops = { |
| 740 | .s_stream = m5mols_s_stream, |
| 741 | }; |
| 742 | |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 743 | static int m5mols_sensor_power(struct m5mols_info *info, bool enable) |
| 744 | { |
| 745 | struct v4l2_subdev *sd = &info->sd; |
| 746 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 747 | const struct m5mols_platform_data *pdata = info->pdata; |
| 748 | int ret; |
| 749 | |
HeungJun Kim | 0f2ee1d | 2011-12-03 11:47:40 -0300 | [diff] [blame] | 750 | if (info->power == enable) |
| 751 | return 0; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 752 | |
HeungJun Kim | 0f2ee1d | 2011-12-03 11:47:40 -0300 | [diff] [blame] | 753 | if (enable) { |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 754 | if (info->set_power) { |
| 755 | ret = info->set_power(&client->dev, 1); |
| 756 | if (ret) |
| 757 | return ret; |
| 758 | } |
| 759 | |
| 760 | ret = regulator_bulk_enable(ARRAY_SIZE(supplies), supplies); |
| 761 | if (ret) { |
| 762 | info->set_power(&client->dev, 0); |
| 763 | return ret; |
| 764 | } |
| 765 | |
| 766 | gpio_set_value(pdata->gpio_reset, !pdata->reset_polarity); |
HeungJun Kim | 0f2ee1d | 2011-12-03 11:47:40 -0300 | [diff] [blame] | 767 | info->power = 1; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 768 | |
| 769 | return ret; |
| 770 | } |
| 771 | |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 772 | ret = regulator_bulk_disable(ARRAY_SIZE(supplies), supplies); |
| 773 | if (ret) |
| 774 | return ret; |
| 775 | |
| 776 | if (info->set_power) |
| 777 | info->set_power(&client->dev, 0); |
| 778 | |
| 779 | gpio_set_value(pdata->gpio_reset, pdata->reset_polarity); |
HeungJun Kim | 0f2ee1d | 2011-12-03 11:47:40 -0300 | [diff] [blame] | 780 | |
| 781 | info->isp_ready = 0; |
| 782 | info->power = 0; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 783 | |
| 784 | return ret; |
| 785 | } |
| 786 | |
| 787 | /* m5mols_update_fw - optional firmware update routine */ |
| 788 | int __attribute__ ((weak)) m5mols_update_fw(struct v4l2_subdev *sd, |
| 789 | int (*set_power)(struct m5mols_info *, bool)) |
| 790 | { |
| 791 | return 0; |
| 792 | } |
| 793 | |
| 794 | /** |
HeungJun Kim | 0f2ee1d | 2011-12-03 11:47:40 -0300 | [diff] [blame] | 795 | * m5mols_fw_start - M-5MOLS internal ARM controller initialization |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 796 | * |
HeungJun Kim | 0f2ee1d | 2011-12-03 11:47:40 -0300 | [diff] [blame] | 797 | * Execute the M-5MOLS internal ARM controller initialization sequence. |
| 798 | * This function should be called after the supply voltage has been |
| 799 | * applied and before any requests to the device are made. |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 800 | */ |
HeungJun Kim | 0f2ee1d | 2011-12-03 11:47:40 -0300 | [diff] [blame] | 801 | static int m5mols_fw_start(struct v4l2_subdev *sd) |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 802 | { |
HeungJun Kim | 0f2ee1d | 2011-12-03 11:47:40 -0300 | [diff] [blame] | 803 | struct m5mols_info *info = to_m5mols(sd); |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 804 | int ret; |
| 805 | |
HeungJun Kim | 0f2ee1d | 2011-12-03 11:47:40 -0300 | [diff] [blame] | 806 | atomic_set(&info->irq_done, 0); |
| 807 | /* Wait until I2C slave is initialized in Flash Writer mode */ |
| 808 | ret = m5mols_busy_wait(sd, FLASH_CAM_START, REG_IN_FLASH_MODE, |
| 809 | M5MOLS_I2C_RDY_WAIT_FL | 0xff, -1); |
| 810 | if (!ret) |
| 811 | ret = m5mols_write(sd, FLASH_CAM_START, REG_START_ARM_BOOT); |
| 812 | if (!ret) |
| 813 | ret = m5mols_wait_interrupt(sd, REG_INT_MODE, 2000); |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 814 | if (ret < 0) |
| 815 | return ret; |
| 816 | |
HeungJun Kim | 0f2ee1d | 2011-12-03 11:47:40 -0300 | [diff] [blame] | 817 | info->isp_ready = 1; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 818 | |
| 819 | ret = m5mols_get_version(sd); |
| 820 | if (!ret) |
| 821 | ret = m5mols_update_fw(sd, m5mols_sensor_power); |
| 822 | if (ret) |
| 823 | return ret; |
| 824 | |
| 825 | v4l2_dbg(1, m5mols_debug, sd, "Success ARM Booting\n"); |
| 826 | |
| 827 | ret = m5mols_write(sd, PARM_INTERFACE, REG_INTERFACE_MIPI); |
| 828 | if (!ret) |
HeungJun Kim | 92e93a1 | 2011-12-03 11:18:57 -0300 | [diff] [blame] | 829 | ret = m5mols_enable_interrupt(sd, |
| 830 | REG_INT_AF | REG_INT_CAPTURE); |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 831 | |
| 832 | return ret; |
| 833 | } |
| 834 | |
Sylwester Nawrocki | 5565a2a | 2012-09-20 08:16:45 -0300 | [diff] [blame] | 835 | /* Execute the lens soft-landing algorithm */ |
| 836 | static int m5mols_auto_focus_stop(struct m5mols_info *info) |
| 837 | { |
| 838 | int ret; |
| 839 | |
| 840 | ret = m5mols_write(&info->sd, AF_EXECUTE, REG_AF_STOP); |
| 841 | if (!ret) |
| 842 | ret = m5mols_write(&info->sd, AF_MODE, REG_AF_POWEROFF); |
| 843 | if (!ret) |
| 844 | ret = m5mols_busy_wait(&info->sd, SYSTEM_STATUS, REG_AF_IDLE, |
| 845 | 0xff, -1); |
| 846 | return ret; |
| 847 | } |
| 848 | |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 849 | /** |
| 850 | * m5mols_s_power - Main sensor power control function |
| 851 | * |
| 852 | * To prevent breaking the lens when the sensor is powered off the Soft-Landing |
| 853 | * algorithm is called where available. The Soft-Landing algorithm availability |
| 854 | * dependends on the firmware provider. |
| 855 | */ |
| 856 | static int m5mols_s_power(struct v4l2_subdev *sd, int on) |
| 857 | { |
| 858 | struct m5mols_info *info = to_m5mols(sd); |
| 859 | int ret; |
| 860 | |
Sylwester Nawrocki | 5565a2a | 2012-09-20 08:16:45 -0300 | [diff] [blame] | 861 | mutex_lock(&info->lock); |
| 862 | |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 863 | if (on) { |
| 864 | ret = m5mols_sensor_power(info, true); |
| 865 | if (!ret) |
HeungJun Kim | 0f2ee1d | 2011-12-03 11:47:40 -0300 | [diff] [blame] | 866 | ret = m5mols_fw_start(sd); |
Sylwester Nawrocki | 5565a2a | 2012-09-20 08:16:45 -0300 | [diff] [blame] | 867 | } else { |
| 868 | if (is_manufacturer(info, REG_SAMSUNG_TECHWIN)) { |
| 869 | ret = m5mols_set_mode(info, REG_MONITOR); |
| 870 | if (!ret) |
| 871 | ret = m5mols_auto_focus_stop(info); |
| 872 | if (ret < 0) |
| 873 | v4l2_warn(sd, "Soft landing lens failed\n"); |
| 874 | } |
| 875 | ret = m5mols_sensor_power(info, false); |
| 876 | |
| 877 | info->ctrl_sync = 0; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 878 | } |
| 879 | |
Sylwester Nawrocki | 5565a2a | 2012-09-20 08:16:45 -0300 | [diff] [blame] | 880 | mutex_unlock(&info->lock); |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 881 | return ret; |
| 882 | } |
| 883 | |
| 884 | static int m5mols_log_status(struct v4l2_subdev *sd) |
| 885 | { |
| 886 | struct m5mols_info *info = to_m5mols(sd); |
| 887 | |
| 888 | v4l2_ctrl_handler_log_status(&info->handle, sd->name); |
| 889 | |
| 890 | return 0; |
| 891 | } |
| 892 | |
| 893 | static const struct v4l2_subdev_core_ops m5mols_core_ops = { |
| 894 | .s_power = m5mols_s_power, |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 895 | .log_status = m5mols_log_status, |
| 896 | }; |
| 897 | |
Sylwester Nawrocki | aa1f460 | 2011-12-03 14:53:30 -0300 | [diff] [blame] | 898 | /* |
| 899 | * V4L2 subdev internal operations |
| 900 | */ |
| 901 | static int m5mols_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) |
| 902 | { |
| 903 | struct v4l2_mbus_framefmt *format = v4l2_subdev_get_try_format(fh, 0); |
| 904 | |
| 905 | *format = m5mols_default_ffmt[0]; |
| 906 | return 0; |
| 907 | } |
| 908 | |
| 909 | static const struct v4l2_subdev_internal_ops m5mols_subdev_internal_ops = { |
| 910 | .open = m5mols_open, |
| 911 | }; |
| 912 | |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 913 | static const struct v4l2_subdev_ops m5mols_ops = { |
| 914 | .core = &m5mols_core_ops, |
| 915 | .pad = &m5mols_pad_ops, |
| 916 | .video = &m5mols_video_ops, |
| 917 | }; |
| 918 | |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 919 | static irqreturn_t m5mols_irq_handler(int irq, void *data) |
| 920 | { |
HeungJun Kim | ce808a4 | 2011-12-02 21:53:20 -0300 | [diff] [blame] | 921 | struct m5mols_info *info = to_m5mols(data); |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 922 | |
HeungJun Kim | ce808a4 | 2011-12-02 21:53:20 -0300 | [diff] [blame] | 923 | atomic_set(&info->irq_done, 1); |
| 924 | wake_up_interruptible(&info->irq_waitq); |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 925 | |
| 926 | return IRQ_HANDLED; |
| 927 | } |
| 928 | |
Greg Kroah-Hartman | 4c62e97 | 2012-12-21 13:17:53 -0800 | [diff] [blame] | 929 | static int m5mols_probe(struct i2c_client *client, |
| 930 | const struct i2c_device_id *id) |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 931 | { |
| 932 | const struct m5mols_platform_data *pdata = client->dev.platform_data; |
Laurent Pinchart | 9532336 | 2013-05-02 11:11:50 -0300 | [diff] [blame] | 933 | unsigned long gpio_flags; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 934 | struct m5mols_info *info; |
| 935 | struct v4l2_subdev *sd; |
| 936 | int ret; |
| 937 | |
| 938 | if (pdata == NULL) { |
| 939 | dev_err(&client->dev, "No platform data\n"); |
| 940 | return -EINVAL; |
| 941 | } |
| 942 | |
| 943 | if (!gpio_is_valid(pdata->gpio_reset)) { |
| 944 | dev_err(&client->dev, "No valid RESET GPIO specified\n"); |
| 945 | return -EINVAL; |
| 946 | } |
| 947 | |
Sylwester Nawrocki | 5b3bdfc | 2011-09-19 09:16:01 -0300 | [diff] [blame] | 948 | if (!client->irq) { |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 949 | dev_err(&client->dev, "Interrupt not assigned\n"); |
| 950 | return -EINVAL; |
| 951 | } |
| 952 | |
Laurent Pinchart | c02b211 | 2013-05-02 08:29:43 -0300 | [diff] [blame] | 953 | info = devm_kzalloc(&client->dev, sizeof(*info), GFP_KERNEL); |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 954 | if (!info) |
| 955 | return -ENOMEM; |
| 956 | |
| 957 | info->pdata = pdata; |
| 958 | info->set_power = pdata->set_power; |
| 959 | |
Laurent Pinchart | 9532336 | 2013-05-02 11:11:50 -0300 | [diff] [blame] | 960 | gpio_flags = pdata->reset_polarity |
| 961 | ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW; |
Laurent Pinchart | b015ba2 | 2013-05-02 08:29:43 -0300 | [diff] [blame] | 962 | ret = devm_gpio_request_one(&client->dev, pdata->gpio_reset, gpio_flags, |
| 963 | "M5MOLS_NRST"); |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 964 | if (ret) { |
| 965 | dev_err(&client->dev, "Failed to request gpio: %d\n", ret); |
Laurent Pinchart | c02b211 | 2013-05-02 08:29:43 -0300 | [diff] [blame] | 966 | return ret; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 967 | } |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 968 | |
Laurent Pinchart | 07e0e5b | 2013-05-02 08:29:43 -0300 | [diff] [blame] | 969 | ret = devm_regulator_bulk_get(&client->dev, ARRAY_SIZE(supplies), |
| 970 | supplies); |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 971 | if (ret) { |
| 972 | dev_err(&client->dev, "Failed to get regulators: %d\n", ret); |
Laurent Pinchart | b015ba2 | 2013-05-02 08:29:43 -0300 | [diff] [blame] | 973 | return ret; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 974 | } |
| 975 | |
| 976 | sd = &info->sd; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 977 | v4l2_i2c_subdev_init(sd, client, &m5mols_ops); |
Sylwester Nawrocki | c5024a7 | 2012-02-17 15:58:53 -0300 | [diff] [blame] | 978 | strlcpy(sd->name, MODULE_NAME, sizeof(sd->name)); |
Sylwester Nawrocki | 87eaec5 | 2011-07-01 08:38:13 -0300 | [diff] [blame] | 979 | sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 980 | |
Sylwester Nawrocki | aa1f460 | 2011-12-03 14:53:30 -0300 | [diff] [blame] | 981 | sd->internal_ops = &m5mols_subdev_internal_ops; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 982 | info->pad.flags = MEDIA_PAD_FL_SOURCE; |
| 983 | ret = media_entity_init(&sd->entity, 1, &info->pad, 0); |
| 984 | if (ret < 0) |
Laurent Pinchart | 07e0e5b | 2013-05-02 08:29:43 -0300 | [diff] [blame] | 985 | return ret; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 986 | sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; |
| 987 | |
| 988 | init_waitqueue_head(&info->irq_waitq); |
Sylwester Nawrocki | 5565a2a | 2012-09-20 08:16:45 -0300 | [diff] [blame] | 989 | mutex_init(&info->lock); |
| 990 | |
Laurent Pinchart | 736db64 | 2013-05-02 08:29:43 -0300 | [diff] [blame] | 991 | ret = devm_request_irq(&client->dev, client->irq, m5mols_irq_handler, |
| 992 | IRQF_TRIGGER_RISING, MODULE_NAME, sd); |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 993 | if (ret) { |
| 994 | dev_err(&client->dev, "Interrupt request failed: %d\n", ret); |
Laurent Pinchart | 736db64 | 2013-05-02 08:29:43 -0300 | [diff] [blame] | 995 | goto error; |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 996 | } |
| 997 | info->res_type = M5MOLS_RESTYPE_MONITOR; |
Sylwester Nawrocki | f428948 | 2011-11-15 15:55:17 -0300 | [diff] [blame] | 998 | info->ffmt[0] = m5mols_default_ffmt[0]; |
| 999 | info->ffmt[1] = m5mols_default_ffmt[1]; |
HeungJun Kim | ce808a4 | 2011-12-02 21:53:20 -0300 | [diff] [blame] | 1000 | |
Sylwester Nawrocki | aa1f460 | 2011-12-03 14:53:30 -0300 | [diff] [blame] | 1001 | ret = m5mols_sensor_power(info, true); |
| 1002 | if (ret) |
Laurent Pinchart | 736db64 | 2013-05-02 08:29:43 -0300 | [diff] [blame] | 1003 | goto error; |
Sylwester Nawrocki | aa1f460 | 2011-12-03 14:53:30 -0300 | [diff] [blame] | 1004 | |
| 1005 | ret = m5mols_fw_start(sd); |
| 1006 | if (!ret) |
Sylwester Nawrocki | 3c5da0b | 2012-04-09 13:51:56 -0300 | [diff] [blame] | 1007 | ret = m5mols_init_controls(sd); |
Sylwester Nawrocki | aa1f460 | 2011-12-03 14:53:30 -0300 | [diff] [blame] | 1008 | |
Julia Lawall | b25b895 | 2012-08-18 17:25:59 -0300 | [diff] [blame] | 1009 | ret = m5mols_sensor_power(info, false); |
Sylwester Nawrocki | aa1f460 | 2011-12-03 14:53:30 -0300 | [diff] [blame] | 1010 | if (!ret) |
| 1011 | return 0; |
Laurent Pinchart | 736db64 | 2013-05-02 08:29:43 -0300 | [diff] [blame] | 1012 | error: |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 1013 | media_entity_cleanup(&sd->entity); |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 1014 | return ret; |
| 1015 | } |
| 1016 | |
Greg Kroah-Hartman | 4c62e97 | 2012-12-21 13:17:53 -0800 | [diff] [blame] | 1017 | static int m5mols_remove(struct i2c_client *client) |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 1018 | { |
| 1019 | struct v4l2_subdev *sd = i2c_get_clientdata(client); |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 1020 | |
| 1021 | v4l2_device_unregister_subdev(sd); |
Sylwester Nawrocki | aa1f460 | 2011-12-03 14:53:30 -0300 | [diff] [blame] | 1022 | v4l2_ctrl_handler_free(sd->ctrl_handler); |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 1023 | media_entity_cleanup(&sd->entity); |
Laurent Pinchart | c02b211 | 2013-05-02 08:29:43 -0300 | [diff] [blame] | 1024 | |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 1025 | return 0; |
| 1026 | } |
| 1027 | |
| 1028 | static const struct i2c_device_id m5mols_id[] = { |
| 1029 | { MODULE_NAME, 0 }, |
| 1030 | { }, |
| 1031 | }; |
| 1032 | MODULE_DEVICE_TABLE(i2c, m5mols_id); |
| 1033 | |
| 1034 | static struct i2c_driver m5mols_i2c_driver = { |
| 1035 | .driver = { |
| 1036 | .name = MODULE_NAME, |
| 1037 | }, |
| 1038 | .probe = m5mols_probe, |
Greg Kroah-Hartman | 4c62e97 | 2012-12-21 13:17:53 -0800 | [diff] [blame] | 1039 | .remove = m5mols_remove, |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 1040 | .id_table = m5mols_id, |
| 1041 | }; |
| 1042 | |
Axel Lin | c6e8d86 | 2012-02-12 06:56:32 -0300 | [diff] [blame] | 1043 | module_i2c_driver(m5mols_i2c_driver); |
HeungJun, Kim | bc12510 | 2011-05-20 02:27:28 -0300 | [diff] [blame] | 1044 | |
| 1045 | MODULE_AUTHOR("HeungJun Kim <riverful.kim@samsung.com>"); |
| 1046 | MODULE_AUTHOR("Dongsoo Kim <dongsoo45.kim@samsung.com>"); |
| 1047 | MODULE_DESCRIPTION("Fujitsu M-5MOLS 8M Pixel camera driver"); |
| 1048 | MODULE_LICENSE("GPL"); |