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> |
| 20 | #include <linux/version.h> |
| 21 | #include <linux/i2c.h> |
| 22 | #include <linux/videodev.h> |
| 23 | #include <linux/video_decoder.h> |
| 24 | #include <linux/ioctl.h> |
| 25 | |
| 26 | #include "wis-i2c.h" |
| 27 | |
| 28 | struct wis_tw2804 { |
| 29 | int channel; |
| 30 | int norm; |
| 31 | int brightness; |
| 32 | int contrast; |
| 33 | int saturation; |
| 34 | int hue; |
| 35 | }; |
| 36 | |
| 37 | static u8 global_registers[] = |
| 38 | { |
| 39 | 0x39, 0x00, |
| 40 | 0x3a, 0xff, |
| 41 | 0x3b, 0x84, |
| 42 | 0x3c, 0x80, |
| 43 | 0x3d, 0x80, |
| 44 | 0x3e, 0x82, |
| 45 | 0x3f, 0x82, |
| 46 | 0xff, 0xff, /* Terminator (reg 0xff does not exist) */ |
| 47 | }; |
| 48 | |
| 49 | static u8 channel_registers[] = |
| 50 | { |
| 51 | 0x01, 0xc4, |
| 52 | 0x02, 0xa5, |
| 53 | 0x03, 0x20, |
| 54 | 0x04, 0xd0, |
| 55 | 0x05, 0x20, |
| 56 | 0x06, 0xd0, |
| 57 | 0x07, 0x88, |
| 58 | 0x08, 0x20, |
| 59 | 0x09, 0x07, |
| 60 | 0x0a, 0xf0, |
| 61 | 0x0b, 0x07, |
| 62 | 0x0c, 0xf0, |
| 63 | 0x0d, 0x40, |
| 64 | 0x0e, 0xd2, |
| 65 | 0x0f, 0x80, |
| 66 | 0x10, 0x80, |
| 67 | 0x11, 0x80, |
| 68 | 0x12, 0x80, |
| 69 | 0x13, 0x1f, |
| 70 | 0x14, 0x00, |
| 71 | 0x15, 0x00, |
| 72 | 0x16, 0x00, |
| 73 | 0x17, 0x00, |
| 74 | 0x18, 0xff, |
| 75 | 0x19, 0xff, |
| 76 | 0x1a, 0xff, |
| 77 | 0x1b, 0xff, |
| 78 | 0x1c, 0xff, |
| 79 | 0x1d, 0xff, |
| 80 | 0x1e, 0xff, |
| 81 | 0x1f, 0xff, |
| 82 | 0x20, 0x07, |
| 83 | 0x21, 0x07, |
| 84 | 0x22, 0x00, |
| 85 | 0x23, 0x91, |
| 86 | 0x24, 0x51, |
| 87 | 0x25, 0x03, |
| 88 | 0x26, 0x00, |
| 89 | 0x27, 0x00, |
| 90 | 0x28, 0x00, |
| 91 | 0x29, 0x00, |
| 92 | 0x2a, 0x00, |
| 93 | 0x2b, 0x00, |
| 94 | 0x2c, 0x00, |
| 95 | 0x2d, 0x00, |
| 96 | 0x2e, 0x00, |
| 97 | 0x2f, 0x00, |
| 98 | 0x30, 0x00, |
| 99 | 0x31, 0x00, |
| 100 | 0x32, 0x00, |
| 101 | 0x33, 0x00, |
| 102 | 0x34, 0x00, |
| 103 | 0x35, 0x00, |
| 104 | 0x36, 0x00, |
| 105 | 0x37, 0x00, |
| 106 | 0xff, 0xff, /* Terminator (reg 0xff does not exist) */ |
| 107 | }; |
| 108 | |
| 109 | static int write_reg(struct i2c_client *client, u8 reg, u8 value, int channel) |
| 110 | { |
| 111 | return i2c_smbus_write_byte_data(client, reg | (channel << 6), value); |
| 112 | } |
| 113 | |
| 114 | static int write_regs(struct i2c_client *client, u8 *regs, int channel) |
| 115 | { |
| 116 | int i; |
| 117 | |
| 118 | for (i = 0; regs[i] != 0xff; i += 2) |
| 119 | if (i2c_smbus_write_byte_data(client, |
| 120 | regs[i] | (channel << 6), regs[i + 1]) < 0) |
| 121 | return -1; |
| 122 | return 0; |
| 123 | } |
| 124 | |
| 125 | static int wis_tw2804_command(struct i2c_client *client, |
| 126 | unsigned int cmd, void *arg) |
| 127 | { |
| 128 | struct wis_tw2804 *dec = i2c_get_clientdata(client); |
| 129 | |
| 130 | if (cmd == DECODER_SET_CHANNEL) { |
| 131 | int *input = arg; |
| 132 | |
| 133 | if (*input < 0 || *input > 3) { |
| 134 | printk(KERN_ERR "wis-tw2804: channel %d is not " |
| 135 | "between 0 and 3!\n", *input); |
| 136 | return 0; |
| 137 | } |
| 138 | dec->channel = *input; |
| 139 | printk(KERN_DEBUG "wis-tw2804: initializing TW2804 " |
| 140 | "channel %d\n", dec->channel); |
| 141 | if (dec->channel == 0 && |
| 142 | write_regs(client, global_registers, 0) < 0) { |
| 143 | printk(KERN_ERR "wis-tw2804: error initializing " |
| 144 | "TW2804 global registers\n"); |
| 145 | return 0; |
| 146 | } |
| 147 | if (write_regs(client, channel_registers, dec->channel) < 0) { |
| 148 | printk(KERN_ERR "wis-tw2804: error initializing " |
| 149 | "TW2804 channel %d\n", dec->channel); |
| 150 | return 0; |
| 151 | } |
| 152 | return 0; |
| 153 | } |
| 154 | |
| 155 | if (dec->channel < 0) { |
| 156 | printk(KERN_DEBUG "wis-tw2804: ignoring command %08x until " |
| 157 | "channel number is set\n", cmd); |
| 158 | return 0; |
| 159 | } |
| 160 | |
| 161 | switch (cmd) { |
| 162 | case DECODER_SET_NORM: |
| 163 | { |
| 164 | int *input = arg; |
| 165 | u8 regs[] = { |
| 166 | 0x01, *input == VIDEO_MODE_NTSC ? 0xc4 : 0x84, |
| 167 | 0x09, *input == VIDEO_MODE_NTSC ? 0x07 : 0x04, |
| 168 | 0x0a, *input == VIDEO_MODE_NTSC ? 0xf0 : 0x20, |
| 169 | 0x0b, *input == VIDEO_MODE_NTSC ? 0x07 : 0x04, |
| 170 | 0x0c, *input == VIDEO_MODE_NTSC ? 0xf0 : 0x20, |
| 171 | 0x0d, *input == VIDEO_MODE_NTSC ? 0x40 : 0x4a, |
| 172 | 0x16, *input == VIDEO_MODE_NTSC ? 0x00 : 0x40, |
| 173 | 0x17, *input == VIDEO_MODE_NTSC ? 0x00 : 0x40, |
| 174 | 0x20, *input == VIDEO_MODE_NTSC ? 0x07 : 0x0f, |
| 175 | 0x21, *input == VIDEO_MODE_NTSC ? 0x07 : 0x0f, |
| 176 | 0xff, 0xff, |
| 177 | }; |
| 178 | write_regs(client, regs, dec->channel); |
| 179 | dec->norm = *input; |
| 180 | break; |
| 181 | } |
| 182 | case VIDIOC_QUERYCTRL: |
| 183 | { |
| 184 | struct v4l2_queryctrl *ctrl = arg; |
| 185 | |
| 186 | switch (ctrl->id) { |
| 187 | case V4L2_CID_BRIGHTNESS: |
| 188 | ctrl->type = V4L2_CTRL_TYPE_INTEGER; |
| 189 | strncpy(ctrl->name, "Brightness", sizeof(ctrl->name)); |
| 190 | ctrl->minimum = 0; |
| 191 | ctrl->maximum = 255; |
| 192 | ctrl->step = 1; |
| 193 | ctrl->default_value = 128; |
| 194 | ctrl->flags = 0; |
| 195 | break; |
| 196 | case V4L2_CID_CONTRAST: |
| 197 | ctrl->type = V4L2_CTRL_TYPE_INTEGER; |
| 198 | strncpy(ctrl->name, "Contrast", sizeof(ctrl->name)); |
| 199 | ctrl->minimum = 0; |
| 200 | ctrl->maximum = 255; |
| 201 | ctrl->step = 1; |
| 202 | ctrl->default_value = 128; |
| 203 | ctrl->flags = 0; |
| 204 | break; |
| 205 | case V4L2_CID_SATURATION: |
| 206 | ctrl->type = V4L2_CTRL_TYPE_INTEGER; |
| 207 | strncpy(ctrl->name, "Saturation", sizeof(ctrl->name)); |
| 208 | ctrl->minimum = 0; |
| 209 | ctrl->maximum = 255; |
| 210 | ctrl->step = 1; |
| 211 | ctrl->default_value = 128; |
| 212 | ctrl->flags = 0; |
| 213 | break; |
| 214 | case V4L2_CID_HUE: |
| 215 | ctrl->type = V4L2_CTRL_TYPE_INTEGER; |
| 216 | strncpy(ctrl->name, "Hue", sizeof(ctrl->name)); |
| 217 | ctrl->minimum = 0; |
| 218 | ctrl->maximum = 255; |
| 219 | ctrl->step = 1; |
| 220 | ctrl->default_value = 128; |
| 221 | ctrl->flags = 0; |
| 222 | break; |
| 223 | } |
| 224 | break; |
| 225 | } |
| 226 | case VIDIOC_S_CTRL: |
| 227 | { |
| 228 | struct v4l2_control *ctrl = arg; |
| 229 | |
| 230 | switch (ctrl->id) { |
| 231 | case V4L2_CID_BRIGHTNESS: |
| 232 | if (ctrl->value > 255) |
| 233 | dec->brightness = 255; |
| 234 | else if (ctrl->value < 0) |
| 235 | dec->brightness = 0; |
| 236 | else |
| 237 | dec->brightness = ctrl->value; |
| 238 | write_reg(client, 0x12, dec->brightness, dec->channel); |
| 239 | break; |
| 240 | case V4L2_CID_CONTRAST: |
| 241 | if (ctrl->value > 255) |
| 242 | dec->contrast = 255; |
| 243 | else if (ctrl->value < 0) |
| 244 | dec->contrast = 0; |
| 245 | else |
| 246 | dec->contrast = ctrl->value; |
| 247 | write_reg(client, 0x11, dec->contrast, dec->channel); |
| 248 | break; |
| 249 | case V4L2_CID_SATURATION: |
| 250 | if (ctrl->value > 255) |
| 251 | dec->saturation = 255; |
| 252 | else if (ctrl->value < 0) |
| 253 | dec->saturation = 0; |
| 254 | else |
| 255 | dec->saturation = ctrl->value; |
| 256 | write_reg(client, 0x10, dec->saturation, dec->channel); |
| 257 | break; |
| 258 | case V4L2_CID_HUE: |
| 259 | if (ctrl->value > 255) |
| 260 | dec->hue = 255; |
| 261 | else if (ctrl->value < 0) |
| 262 | dec->hue = 0; |
| 263 | else |
| 264 | dec->hue = ctrl->value; |
| 265 | write_reg(client, 0x0f, dec->hue, dec->channel); |
| 266 | break; |
| 267 | } |
| 268 | break; |
| 269 | } |
| 270 | case VIDIOC_G_CTRL: |
| 271 | { |
| 272 | struct v4l2_control *ctrl = arg; |
| 273 | |
| 274 | switch (ctrl->id) { |
| 275 | case V4L2_CID_BRIGHTNESS: |
| 276 | ctrl->value = dec->brightness; |
| 277 | break; |
| 278 | case V4L2_CID_CONTRAST: |
| 279 | ctrl->value = dec->contrast; |
| 280 | break; |
| 281 | case V4L2_CID_SATURATION: |
| 282 | ctrl->value = dec->saturation; |
| 283 | break; |
| 284 | case V4L2_CID_HUE: |
| 285 | ctrl->value = dec->hue; |
| 286 | break; |
| 287 | } |
| 288 | break; |
| 289 | } |
| 290 | default: |
| 291 | break; |
| 292 | } |
| 293 | return 0; |
| 294 | } |
| 295 | |
| 296 | static struct i2c_driver wis_tw2804_driver; |
| 297 | |
| 298 | static struct i2c_client wis_tw2804_client_templ = { |
| 299 | .name = "TW2804 (WIS)", |
| 300 | .driver = &wis_tw2804_driver, |
| 301 | }; |
| 302 | |
| 303 | static int wis_tw2804_detect(struct i2c_adapter *adapter, int addr, int kind) |
| 304 | { |
| 305 | struct i2c_client *client; |
| 306 | struct wis_tw2804 *dec; |
| 307 | |
| 308 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
| 309 | return 0; |
| 310 | |
| 311 | client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL); |
| 312 | if (client == NULL) |
| 313 | return -ENOMEM; |
| 314 | memcpy(client, &wis_tw2804_client_templ, |
| 315 | sizeof(wis_tw2804_client_templ)); |
| 316 | client->adapter = adapter; |
| 317 | client->addr = addr; |
| 318 | |
| 319 | dec = kmalloc(sizeof(struct wis_tw2804), GFP_KERNEL); |
| 320 | if (dec == NULL) { |
| 321 | kfree(client); |
| 322 | return -ENOMEM; |
| 323 | } |
| 324 | dec->channel = -1; |
| 325 | dec->norm = VIDEO_MODE_NTSC; |
| 326 | dec->brightness = 128; |
| 327 | dec->contrast = 128; |
| 328 | dec->saturation = 128; |
| 329 | dec->hue = 128; |
| 330 | i2c_set_clientdata(client, dec); |
| 331 | |
| 332 | printk(KERN_DEBUG "wis-tw2804: creating TW2804 at address %d on %s\n", |
| 333 | addr, adapter->name); |
| 334 | |
| 335 | i2c_attach_client(client); |
| 336 | return 0; |
| 337 | } |
| 338 | |
| 339 | static int wis_tw2804_detach(struct i2c_client *client) |
| 340 | { |
| 341 | struct wis_tw2804 *dec = i2c_get_clientdata(client); |
| 342 | int r; |
| 343 | |
| 344 | r = i2c_detach_client(client); |
| 345 | if (r < 0) |
| 346 | return r; |
| 347 | |
| 348 | kfree(client); |
| 349 | kfree(dec); |
| 350 | return 0; |
| 351 | } |
| 352 | |
| 353 | static struct i2c_driver wis_tw2804_driver = { |
| 354 | .driver = { |
| 355 | .name = "WIS TW2804 I2C driver", |
| 356 | }, |
| 357 | .id = I2C_DRIVERID_WIS_TW2804, |
| 358 | .detach_client = wis_tw2804_detach, |
| 359 | .command = wis_tw2804_command, |
| 360 | }; |
| 361 | |
| 362 | static int __init wis_tw2804_init(void) |
| 363 | { |
| 364 | int r; |
| 365 | |
| 366 | r = i2c_add_driver(&wis_tw2804_driver); |
| 367 | if (r < 0) |
| 368 | return r; |
| 369 | return wis_i2c_add_driver(wis_tw2804_driver.id, wis_tw2804_detect); |
| 370 | } |
| 371 | |
| 372 | static void __exit wis_tw2804_cleanup(void) |
| 373 | { |
| 374 | wis_i2c_del_driver(wis_tw2804_detect); |
| 375 | i2c_del_driver(&wis_tw2804_driver); |
| 376 | } |
| 377 | |
| 378 | module_init(wis_tw2804_init); |
| 379 | module_exit(wis_tw2804_cleanup); |
| 380 | |
| 381 | MODULE_LICENSE("GPL v2"); |