Greg Kroah-Hartman | 866b869 | 2008-02-15 16:53:09 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2005-2006 Micronas USA Inc. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License (Version 2) as |
| 6 | * published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License |
| 14 | * along with this program; if not, write to the Free Software Foundation, |
| 15 | * Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. |
| 16 | */ |
| 17 | |
| 18 | #include <linux/module.h> |
| 19 | #include <linux/init.h> |
Greg Kroah-Hartman | 866b869 | 2008-02-15 16:53:09 -0800 | [diff] [blame] | 20 | #include <linux/i2c.h> |
Ross Cohen | df20d69 | 2008-09-29 22:36:24 -0400 | [diff] [blame] | 21 | #include <linux/videodev2.h> |
Greg Kroah-Hartman | 866b869 | 2008-02-15 16:53:09 -0800 | [diff] [blame] | 22 | #include <linux/ioctl.h> |
| 23 | |
| 24 | #include "wis-i2c.h" |
| 25 | |
| 26 | struct wis_saa7113 { |
| 27 | int norm; |
| 28 | int brightness; |
| 29 | int contrast; |
| 30 | int saturation; |
| 31 | int hue; |
| 32 | }; |
| 33 | |
| 34 | static u8 initial_registers[] = |
| 35 | { |
| 36 | 0x01, 0x08, |
| 37 | 0x02, 0xc0, |
| 38 | 0x03, 0x33, |
| 39 | 0x04, 0x00, |
| 40 | 0x05, 0x00, |
| 41 | 0x06, 0xe9, |
| 42 | 0x07, 0x0d, |
| 43 | 0x08, 0xd8, |
| 44 | 0x09, 0x40, |
| 45 | 0x0a, 0x80, |
| 46 | 0x0b, 0x47, |
| 47 | 0x0c, 0x40, |
| 48 | 0x0d, 0x00, |
| 49 | 0x0e, 0x01, |
| 50 | 0x0f, 0x2a, |
| 51 | 0x10, 0x40, |
| 52 | 0x11, 0x0c, |
| 53 | 0x12, 0xfe, |
| 54 | 0x13, 0x00, |
| 55 | 0x14, 0x00, |
| 56 | 0x15, 0x04, |
| 57 | 0x16, 0x00, |
| 58 | 0x17, 0x00, |
| 59 | 0x18, 0x00, |
| 60 | 0x19, 0x00, |
| 61 | 0x1a, 0x00, |
| 62 | 0x1b, 0x00, |
| 63 | 0x1c, 0x00, |
| 64 | 0x1d, 0x00, |
| 65 | 0x1e, 0x00, |
| 66 | 0x1f, 0xc8, |
| 67 | 0x40, 0x00, |
| 68 | 0x41, 0xff, |
| 69 | 0x42, 0xff, |
| 70 | 0x43, 0xff, |
| 71 | 0x44, 0xff, |
| 72 | 0x45, 0xff, |
| 73 | 0x46, 0xff, |
| 74 | 0x47, 0xff, |
| 75 | 0x48, 0xff, |
| 76 | 0x49, 0xff, |
| 77 | 0x4a, 0xff, |
| 78 | 0x4b, 0xff, |
| 79 | 0x4c, 0xff, |
| 80 | 0x4d, 0xff, |
| 81 | 0x4e, 0xff, |
| 82 | 0x4f, 0xff, |
| 83 | 0x50, 0xff, |
| 84 | 0x51, 0xff, |
| 85 | 0x52, 0xff, |
| 86 | 0x53, 0xff, |
| 87 | 0x54, 0xff, |
| 88 | 0x55, 0xff, |
| 89 | 0x56, 0xff, |
| 90 | 0x57, 0xff, |
| 91 | 0x58, 0x00, |
| 92 | 0x59, 0x54, |
| 93 | 0x5a, 0x07, |
| 94 | 0x5b, 0x83, |
| 95 | 0x5c, 0x00, |
| 96 | 0x5d, 0x00, |
| 97 | 0x5e, 0x00, |
| 98 | 0x5f, 0x00, |
| 99 | 0x60, 0x00, |
| 100 | 0x61, 0x00, |
| 101 | 0x00, 0x00, /* Terminator (reg 0x00 is read-only) */ |
| 102 | }; |
| 103 | |
| 104 | static int write_reg(struct i2c_client *client, u8 reg, u8 value) |
| 105 | { |
| 106 | return i2c_smbus_write_byte_data(client, reg, value); |
| 107 | } |
| 108 | |
| 109 | static int write_regs(struct i2c_client *client, u8 *regs) |
| 110 | { |
| 111 | int i; |
| 112 | |
| 113 | for (i = 0; regs[i] != 0x00; i += 2) |
| 114 | if (i2c_smbus_write_byte_data(client, regs[i], regs[i + 1]) < 0) |
| 115 | return -1; |
| 116 | return 0; |
| 117 | } |
| 118 | |
| 119 | static int wis_saa7113_command(struct i2c_client *client, |
| 120 | unsigned int cmd, void *arg) |
| 121 | { |
| 122 | struct wis_saa7113 *dec = i2c_get_clientdata(client); |
| 123 | |
| 124 | switch (cmd) { |
Ross Cohen | df20d69 | 2008-09-29 22:36:24 -0400 | [diff] [blame] | 125 | case VIDIOC_S_INPUT: |
Greg Kroah-Hartman | 866b869 | 2008-02-15 16:53:09 -0800 | [diff] [blame] | 126 | { |
| 127 | int *input = arg; |
| 128 | |
| 129 | i2c_smbus_write_byte_data(client, 0x02, 0xC0 | *input); |
| 130 | i2c_smbus_write_byte_data(client, 0x09, |
| 131 | *input < 6 ? 0x40 : 0x80); |
| 132 | break; |
| 133 | } |
Ross Cohen | df20d69 | 2008-09-29 22:36:24 -0400 | [diff] [blame] | 134 | case VIDIOC_S_STD: |
Greg Kroah-Hartman | 866b869 | 2008-02-15 16:53:09 -0800 | [diff] [blame] | 135 | { |
Ross Cohen | df20d69 | 2008-09-29 22:36:24 -0400 | [diff] [blame] | 136 | v4l2_std_id *input = arg; |
Greg Kroah-Hartman | 866b869 | 2008-02-15 16:53:09 -0800 | [diff] [blame] | 137 | dec->norm = *input; |
Ross Cohen | df20d69 | 2008-09-29 22:36:24 -0400 | [diff] [blame] | 138 | if (dec->norm & V4L2_STD_NTSC) { |
Greg Kroah-Hartman | 866b869 | 2008-02-15 16:53:09 -0800 | [diff] [blame] | 139 | write_reg(client, 0x0e, 0x01); |
| 140 | write_reg(client, 0x10, 0x40); |
Ross Cohen | df20d69 | 2008-09-29 22:36:24 -0400 | [diff] [blame] | 141 | } else if (dec->norm & V4L2_STD_PAL) { |
| 142 | write_reg(client, 0x0e, 0x01); |
| 143 | write_reg(client, 0x10, 0x48); |
| 144 | } else if (dec->norm * V4L2_STD_SECAM) { |
Greg Kroah-Hartman | 866b869 | 2008-02-15 16:53:09 -0800 | [diff] [blame] | 145 | write_reg(client, 0x0e, 0x50); |
| 146 | write_reg(client, 0x10, 0x48); |
Greg Kroah-Hartman | 866b869 | 2008-02-15 16:53:09 -0800 | [diff] [blame] | 147 | } |
| 148 | break; |
| 149 | } |
| 150 | case VIDIOC_QUERYCTRL: |
| 151 | { |
| 152 | struct v4l2_queryctrl *ctrl = arg; |
| 153 | |
| 154 | switch (ctrl->id) { |
| 155 | case V4L2_CID_BRIGHTNESS: |
| 156 | ctrl->type = V4L2_CTRL_TYPE_INTEGER; |
| 157 | strncpy(ctrl->name, "Brightness", sizeof(ctrl->name)); |
| 158 | ctrl->minimum = 0; |
| 159 | ctrl->maximum = 255; |
| 160 | ctrl->step = 1; |
| 161 | ctrl->default_value = 128; |
| 162 | ctrl->flags = 0; |
| 163 | break; |
| 164 | case V4L2_CID_CONTRAST: |
| 165 | ctrl->type = V4L2_CTRL_TYPE_INTEGER; |
| 166 | strncpy(ctrl->name, "Contrast", sizeof(ctrl->name)); |
| 167 | ctrl->minimum = 0; |
| 168 | ctrl->maximum = 127; |
| 169 | ctrl->step = 1; |
| 170 | ctrl->default_value = 71; |
| 171 | ctrl->flags = 0; |
| 172 | break; |
| 173 | case V4L2_CID_SATURATION: |
| 174 | ctrl->type = V4L2_CTRL_TYPE_INTEGER; |
| 175 | strncpy(ctrl->name, "Saturation", sizeof(ctrl->name)); |
| 176 | ctrl->minimum = 0; |
| 177 | ctrl->maximum = 127; |
| 178 | ctrl->step = 1; |
| 179 | ctrl->default_value = 64; |
| 180 | ctrl->flags = 0; |
| 181 | break; |
| 182 | case V4L2_CID_HUE: |
| 183 | ctrl->type = V4L2_CTRL_TYPE_INTEGER; |
| 184 | strncpy(ctrl->name, "Hue", sizeof(ctrl->name)); |
| 185 | ctrl->minimum = -128; |
| 186 | ctrl->maximum = 127; |
| 187 | ctrl->step = 1; |
| 188 | ctrl->default_value = 0; |
| 189 | ctrl->flags = 0; |
| 190 | break; |
| 191 | } |
| 192 | break; |
| 193 | } |
| 194 | case VIDIOC_S_CTRL: |
| 195 | { |
| 196 | struct v4l2_control *ctrl = arg; |
| 197 | |
| 198 | switch (ctrl->id) { |
| 199 | case V4L2_CID_BRIGHTNESS: |
| 200 | if (ctrl->value > 255) |
| 201 | dec->brightness = 255; |
| 202 | else if (ctrl->value < 0) |
| 203 | dec->brightness = 0; |
| 204 | else |
| 205 | dec->brightness = ctrl->value; |
| 206 | write_reg(client, 0x0a, dec->brightness); |
| 207 | break; |
| 208 | case V4L2_CID_CONTRAST: |
| 209 | if (ctrl->value > 127) |
| 210 | dec->contrast = 127; |
| 211 | else if (ctrl->value < 0) |
| 212 | dec->contrast = 0; |
| 213 | else |
| 214 | dec->contrast = ctrl->value; |
| 215 | write_reg(client, 0x0b, dec->contrast); |
| 216 | break; |
| 217 | case V4L2_CID_SATURATION: |
| 218 | if (ctrl->value > 127) |
| 219 | dec->saturation = 127; |
| 220 | else if (ctrl->value < 0) |
| 221 | dec->saturation = 0; |
| 222 | else |
| 223 | dec->saturation = ctrl->value; |
| 224 | write_reg(client, 0x0c, dec->saturation); |
| 225 | break; |
| 226 | case V4L2_CID_HUE: |
| 227 | if (ctrl->value > 127) |
| 228 | dec->hue = 127; |
| 229 | else if (ctrl->value < -128) |
| 230 | dec->hue = -128; |
| 231 | else |
| 232 | dec->hue = ctrl->value; |
| 233 | write_reg(client, 0x0d, dec->hue); |
| 234 | break; |
| 235 | } |
| 236 | break; |
| 237 | } |
| 238 | case VIDIOC_G_CTRL: |
| 239 | { |
| 240 | struct v4l2_control *ctrl = arg; |
| 241 | |
| 242 | switch (ctrl->id) { |
| 243 | case V4L2_CID_BRIGHTNESS: |
| 244 | ctrl->value = dec->brightness; |
| 245 | break; |
| 246 | case V4L2_CID_CONTRAST: |
| 247 | ctrl->value = dec->contrast; |
| 248 | break; |
| 249 | case V4L2_CID_SATURATION: |
| 250 | ctrl->value = dec->saturation; |
| 251 | break; |
| 252 | case V4L2_CID_HUE: |
| 253 | ctrl->value = dec->hue; |
| 254 | break; |
| 255 | } |
| 256 | break; |
| 257 | } |
| 258 | default: |
| 259 | break; |
| 260 | } |
| 261 | return 0; |
| 262 | } |
| 263 | |
| 264 | static struct i2c_driver wis_saa7113_driver; |
| 265 | |
| 266 | static struct i2c_client wis_saa7113_client_templ = { |
| 267 | .name = "SAA7113 (WIS)", |
| 268 | .driver = &wis_saa7113_driver, |
| 269 | }; |
| 270 | |
| 271 | static int wis_saa7113_detect(struct i2c_adapter *adapter, int addr, int kind) |
| 272 | { |
| 273 | struct i2c_client *client; |
| 274 | struct wis_saa7113 *dec; |
| 275 | |
| 276 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
| 277 | return 0; |
| 278 | |
| 279 | client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL); |
| 280 | if (client == NULL) |
| 281 | return -ENOMEM; |
| 282 | memcpy(client, &wis_saa7113_client_templ, |
| 283 | sizeof(wis_saa7113_client_templ)); |
| 284 | client->adapter = adapter; |
| 285 | client->addr = addr; |
| 286 | |
| 287 | dec = kmalloc(sizeof(struct wis_saa7113), GFP_KERNEL); |
| 288 | if (dec == NULL) { |
| 289 | kfree(client); |
| 290 | return -ENOMEM; |
| 291 | } |
Ross Cohen | df20d69 | 2008-09-29 22:36:24 -0400 | [diff] [blame] | 292 | dec->norm = V4L2_STD_NTSC; |
Greg Kroah-Hartman | 866b869 | 2008-02-15 16:53:09 -0800 | [diff] [blame] | 293 | dec->brightness = 128; |
| 294 | dec->contrast = 71; |
| 295 | dec->saturation = 64; |
| 296 | dec->hue = 0; |
| 297 | i2c_set_clientdata(client, dec); |
| 298 | |
| 299 | printk(KERN_DEBUG |
| 300 | "wis-saa7113: initializing SAA7113 at address %d on %s\n", |
| 301 | addr, adapter->name); |
| 302 | |
| 303 | if (write_regs(client, initial_registers) < 0) { |
| 304 | printk(KERN_ERR |
| 305 | "wis-saa7113: error initializing SAA7113\n"); |
| 306 | kfree(client); |
| 307 | kfree(dec); |
| 308 | return 0; |
| 309 | } |
| 310 | |
| 311 | i2c_attach_client(client); |
| 312 | return 0; |
| 313 | } |
| 314 | |
| 315 | static int wis_saa7113_detach(struct i2c_client *client) |
| 316 | { |
| 317 | struct wis_saa7113 *dec = i2c_get_clientdata(client); |
| 318 | int r; |
| 319 | |
| 320 | r = i2c_detach_client(client); |
| 321 | if (r < 0) |
| 322 | return r; |
| 323 | |
| 324 | kfree(client); |
| 325 | kfree(dec); |
| 326 | return 0; |
| 327 | } |
| 328 | |
| 329 | static struct i2c_driver wis_saa7113_driver = { |
| 330 | .driver = { |
| 331 | .name = "WIS SAA7113 I2C driver", |
| 332 | }, |
| 333 | .id = I2C_DRIVERID_WIS_SAA7113, |
| 334 | .detach_client = wis_saa7113_detach, |
| 335 | .command = wis_saa7113_command, |
| 336 | }; |
| 337 | |
| 338 | static int __init wis_saa7113_init(void) |
| 339 | { |
| 340 | int r; |
| 341 | |
| 342 | r = i2c_add_driver(&wis_saa7113_driver); |
| 343 | if (r < 0) |
| 344 | return r; |
| 345 | return wis_i2c_add_driver(wis_saa7113_driver.id, wis_saa7113_detect); |
| 346 | } |
| 347 | |
| 348 | static void __exit wis_saa7113_cleanup(void) |
| 349 | { |
| 350 | wis_i2c_del_driver(wis_saa7113_detect); |
| 351 | i2c_del_driver(&wis_saa7113_driver); |
| 352 | } |
| 353 | |
| 354 | module_init(wis_saa7113_init); |
| 355 | module_exit(wis_saa7113_cleanup); |
| 356 | |
| 357 | MODULE_LICENSE("GPL v2"); |