| 1 | /* |
| 2 | * adv7170 - adv7170, adv7171 video encoder driver version 0.0.1 |
| 3 | * |
| 4 | * Copyright (C) 2002 Maxim Yevtyushkin <max@linuxmedialabs.com> |
| 5 | * |
| 6 | * Based on adv7176 driver by: |
| 7 | * |
| 8 | * Copyright (C) 1998 Dave Perks <dperks@ibm.net> |
| 9 | * Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net> |
| 10 | * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx> |
| 11 | * - some corrections for Pinnacle Systems Inc. DC10plus card. |
| 12 | * |
| 13 | * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net> |
| 14 | * - moved over to linux>=2.4.x i2c protocol (1/1/2003) |
| 15 | * |
| 16 | * This program is free software; you can redistribute it and/or modify |
| 17 | * it under the terms of the GNU General Public License as published by |
| 18 | * the Free Software Foundation; either version 2 of the License, or |
| 19 | * (at your option) any later version. |
| 20 | * |
| 21 | * This program is distributed in the hope that it will be useful, |
| 22 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 23 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 24 | * GNU General Public License for more details. |
| 25 | * |
| 26 | * You should have received a copy of the GNU General Public License |
| 27 | * along with this program; if not, write to the Free Software |
| 28 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 29 | */ |
| 30 | |
| 31 | #include <linux/module.h> |
| 32 | #include <linux/types.h> |
| 33 | #include <linux/slab.h> |
| 34 | #include <linux/ioctl.h> |
| 35 | #include <asm/uaccess.h> |
| 36 | #include <linux/i2c.h> |
| 37 | #include <linux/videodev2.h> |
| 38 | #include <media/v4l2-device.h> |
| 39 | #include <media/v4l2-chip-ident.h> |
| 40 | |
| 41 | MODULE_DESCRIPTION("Analog Devices ADV7170 video encoder driver"); |
| 42 | MODULE_AUTHOR("Maxim Yevtyushkin"); |
| 43 | MODULE_LICENSE("GPL"); |
| 44 | |
| 45 | |
| 46 | static int debug; |
| 47 | module_param(debug, int, 0); |
| 48 | MODULE_PARM_DESC(debug, "Debug level (0-1)"); |
| 49 | |
| 50 | /* ----------------------------------------------------------------------- */ |
| 51 | |
| 52 | struct adv7170 { |
| 53 | struct v4l2_subdev sd; |
| 54 | unsigned char reg[128]; |
| 55 | |
| 56 | v4l2_std_id norm; |
| 57 | int input; |
| 58 | }; |
| 59 | |
| 60 | static inline struct adv7170 *to_adv7170(struct v4l2_subdev *sd) |
| 61 | { |
| 62 | return container_of(sd, struct adv7170, sd); |
| 63 | } |
| 64 | |
| 65 | static char *inputs[] = { "pass_through", "play_back" }; |
| 66 | |
| 67 | /* ----------------------------------------------------------------------- */ |
| 68 | |
| 69 | static inline int adv7170_write(struct v4l2_subdev *sd, u8 reg, u8 value) |
| 70 | { |
| 71 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 72 | struct adv7170 *encoder = to_adv7170(sd); |
| 73 | |
| 74 | encoder->reg[reg] = value; |
| 75 | return i2c_smbus_write_byte_data(client, reg, value); |
| 76 | } |
| 77 | |
| 78 | static inline int adv7170_read(struct v4l2_subdev *sd, u8 reg) |
| 79 | { |
| 80 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 81 | |
| 82 | return i2c_smbus_read_byte_data(client, reg); |
| 83 | } |
| 84 | |
| 85 | static int adv7170_write_block(struct v4l2_subdev *sd, |
| 86 | const u8 *data, unsigned int len) |
| 87 | { |
| 88 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 89 | struct adv7170 *encoder = to_adv7170(sd); |
| 90 | int ret = -1; |
| 91 | u8 reg; |
| 92 | |
| 93 | /* the adv7170 has an autoincrement function, use it if |
| 94 | * the adapter understands raw I2C */ |
| 95 | if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { |
| 96 | /* do raw I2C, not smbus compatible */ |
| 97 | u8 block_data[32]; |
| 98 | int block_len; |
| 99 | |
| 100 | while (len >= 2) { |
| 101 | block_len = 0; |
| 102 | block_data[block_len++] = reg = data[0]; |
| 103 | do { |
| 104 | block_data[block_len++] = |
| 105 | encoder->reg[reg++] = data[1]; |
| 106 | len -= 2; |
| 107 | data += 2; |
| 108 | } while (len >= 2 && data[0] == reg && block_len < 32); |
| 109 | ret = i2c_master_send(client, block_data, block_len); |
| 110 | if (ret < 0) |
| 111 | break; |
| 112 | } |
| 113 | } else { |
| 114 | /* do some slow I2C emulation kind of thing */ |
| 115 | while (len >= 2) { |
| 116 | reg = *data++; |
| 117 | ret = adv7170_write(sd, reg, *data++); |
| 118 | if (ret < 0) |
| 119 | break; |
| 120 | len -= 2; |
| 121 | } |
| 122 | } |
| 123 | return ret; |
| 124 | } |
| 125 | |
| 126 | /* ----------------------------------------------------------------------- */ |
| 127 | |
| 128 | #define TR0MODE 0x4c |
| 129 | #define TR0RST 0x80 |
| 130 | |
| 131 | #define TR1CAPT 0x00 |
| 132 | #define TR1PLAY 0x00 |
| 133 | |
| 134 | static const unsigned char init_NTSC[] = { |
| 135 | 0x00, 0x10, /* MR0 */ |
| 136 | 0x01, 0x20, /* MR1 */ |
| 137 | 0x02, 0x0e, /* MR2 RTC control: bits 2 and 1 */ |
| 138 | 0x03, 0x80, /* MR3 */ |
| 139 | 0x04, 0x30, /* MR4 */ |
| 140 | 0x05, 0x00, /* Reserved */ |
| 141 | 0x06, 0x00, /* Reserved */ |
| 142 | 0x07, TR0MODE, /* TM0 */ |
| 143 | 0x08, TR1CAPT, /* TM1 */ |
| 144 | 0x09, 0x16, /* Fsc0 */ |
| 145 | 0x0a, 0x7c, /* Fsc1 */ |
| 146 | 0x0b, 0xf0, /* Fsc2 */ |
| 147 | 0x0c, 0x21, /* Fsc3 */ |
| 148 | 0x0d, 0x00, /* Subcarrier Phase */ |
| 149 | 0x0e, 0x00, /* Closed Capt. Ext 0 */ |
| 150 | 0x0f, 0x00, /* Closed Capt. Ext 1 */ |
| 151 | 0x10, 0x00, /* Closed Capt. 0 */ |
| 152 | 0x11, 0x00, /* Closed Capt. 1 */ |
| 153 | 0x12, 0x00, /* Pedestal Ctl 0 */ |
| 154 | 0x13, 0x00, /* Pedestal Ctl 1 */ |
| 155 | 0x14, 0x00, /* Pedestal Ctl 2 */ |
| 156 | 0x15, 0x00, /* Pedestal Ctl 3 */ |
| 157 | 0x16, 0x00, /* CGMS_WSS_0 */ |
| 158 | 0x17, 0x00, /* CGMS_WSS_1 */ |
| 159 | 0x18, 0x00, /* CGMS_WSS_2 */ |
| 160 | 0x19, 0x00, /* Teletext Ctl */ |
| 161 | }; |
| 162 | |
| 163 | static const unsigned char init_PAL[] = { |
| 164 | 0x00, 0x71, /* MR0 */ |
| 165 | 0x01, 0x20, /* MR1 */ |
| 166 | 0x02, 0x0e, /* MR2 RTC control: bits 2 and 1 */ |
| 167 | 0x03, 0x80, /* MR3 */ |
| 168 | 0x04, 0x30, /* MR4 */ |
| 169 | 0x05, 0x00, /* Reserved */ |
| 170 | 0x06, 0x00, /* Reserved */ |
| 171 | 0x07, TR0MODE, /* TM0 */ |
| 172 | 0x08, TR1CAPT, /* TM1 */ |
| 173 | 0x09, 0xcb, /* Fsc0 */ |
| 174 | 0x0a, 0x8a, /* Fsc1 */ |
| 175 | 0x0b, 0x09, /* Fsc2 */ |
| 176 | 0x0c, 0x2a, /* Fsc3 */ |
| 177 | 0x0d, 0x00, /* Subcarrier Phase */ |
| 178 | 0x0e, 0x00, /* Closed Capt. Ext 0 */ |
| 179 | 0x0f, 0x00, /* Closed Capt. Ext 1 */ |
| 180 | 0x10, 0x00, /* Closed Capt. 0 */ |
| 181 | 0x11, 0x00, /* Closed Capt. 1 */ |
| 182 | 0x12, 0x00, /* Pedestal Ctl 0 */ |
| 183 | 0x13, 0x00, /* Pedestal Ctl 1 */ |
| 184 | 0x14, 0x00, /* Pedestal Ctl 2 */ |
| 185 | 0x15, 0x00, /* Pedestal Ctl 3 */ |
| 186 | 0x16, 0x00, /* CGMS_WSS_0 */ |
| 187 | 0x17, 0x00, /* CGMS_WSS_1 */ |
| 188 | 0x18, 0x00, /* CGMS_WSS_2 */ |
| 189 | 0x19, 0x00, /* Teletext Ctl */ |
| 190 | }; |
| 191 | |
| 192 | |
| 193 | static int adv7170_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std) |
| 194 | { |
| 195 | struct adv7170 *encoder = to_adv7170(sd); |
| 196 | |
| 197 | v4l2_dbg(1, debug, sd, "set norm %llx\n", (unsigned long long)std); |
| 198 | |
| 199 | if (std & V4L2_STD_NTSC) { |
| 200 | adv7170_write_block(sd, init_NTSC, sizeof(init_NTSC)); |
| 201 | if (encoder->input == 0) |
| 202 | adv7170_write(sd, 0x02, 0x0e); /* Enable genlock */ |
| 203 | adv7170_write(sd, 0x07, TR0MODE | TR0RST); |
| 204 | adv7170_write(sd, 0x07, TR0MODE); |
| 205 | } else if (std & V4L2_STD_PAL) { |
| 206 | adv7170_write_block(sd, init_PAL, sizeof(init_PAL)); |
| 207 | if (encoder->input == 0) |
| 208 | adv7170_write(sd, 0x02, 0x0e); /* Enable genlock */ |
| 209 | adv7170_write(sd, 0x07, TR0MODE | TR0RST); |
| 210 | adv7170_write(sd, 0x07, TR0MODE); |
| 211 | } else { |
| 212 | v4l2_dbg(1, debug, sd, "illegal norm: %llx\n", |
| 213 | (unsigned long long)std); |
| 214 | return -EINVAL; |
| 215 | } |
| 216 | v4l2_dbg(1, debug, sd, "switched to %llx\n", (unsigned long long)std); |
| 217 | encoder->norm = std; |
| 218 | return 0; |
| 219 | } |
| 220 | |
| 221 | static int adv7170_s_routing(struct v4l2_subdev *sd, |
| 222 | u32 input, u32 output, u32 config) |
| 223 | { |
| 224 | struct adv7170 *encoder = to_adv7170(sd); |
| 225 | |
| 226 | /* RJ: input = 0: input is from decoder |
| 227 | input = 1: input is from ZR36060 |
| 228 | input = 2: color bar */ |
| 229 | |
| 230 | v4l2_dbg(1, debug, sd, "set input from %s\n", |
| 231 | input == 0 ? "decoder" : "ZR36060"); |
| 232 | |
| 233 | switch (input) { |
| 234 | case 0: |
| 235 | adv7170_write(sd, 0x01, 0x20); |
| 236 | adv7170_write(sd, 0x08, TR1CAPT); /* TR1 */ |
| 237 | adv7170_write(sd, 0x02, 0x0e); /* Enable genlock */ |
| 238 | adv7170_write(sd, 0x07, TR0MODE | TR0RST); |
| 239 | adv7170_write(sd, 0x07, TR0MODE); |
| 240 | /* udelay(10); */ |
| 241 | break; |
| 242 | |
| 243 | case 1: |
| 244 | adv7170_write(sd, 0x01, 0x00); |
| 245 | adv7170_write(sd, 0x08, TR1PLAY); /* TR1 */ |
| 246 | adv7170_write(sd, 0x02, 0x08); |
| 247 | adv7170_write(sd, 0x07, TR0MODE | TR0RST); |
| 248 | adv7170_write(sd, 0x07, TR0MODE); |
| 249 | /* udelay(10); */ |
| 250 | break; |
| 251 | |
| 252 | default: |
| 253 | v4l2_dbg(1, debug, sd, "illegal input: %d\n", input); |
| 254 | return -EINVAL; |
| 255 | } |
| 256 | v4l2_dbg(1, debug, sd, "switched to %s\n", inputs[input]); |
| 257 | encoder->input = input; |
| 258 | return 0; |
| 259 | } |
| 260 | |
| 261 | static int adv7170_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip) |
| 262 | { |
| 263 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
| 264 | |
| 265 | return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7170, 0); |
| 266 | } |
| 267 | |
| 268 | /* ----------------------------------------------------------------------- */ |
| 269 | |
| 270 | static const struct v4l2_subdev_core_ops adv7170_core_ops = { |
| 271 | .g_chip_ident = adv7170_g_chip_ident, |
| 272 | }; |
| 273 | |
| 274 | static const struct v4l2_subdev_video_ops adv7170_video_ops = { |
| 275 | .s_std_output = adv7170_s_std_output, |
| 276 | .s_routing = adv7170_s_routing, |
| 277 | }; |
| 278 | |
| 279 | static const struct v4l2_subdev_ops adv7170_ops = { |
| 280 | .core = &adv7170_core_ops, |
| 281 | .video = &adv7170_video_ops, |
| 282 | }; |
| 283 | |
| 284 | /* ----------------------------------------------------------------------- */ |
| 285 | |
| 286 | static int adv7170_probe(struct i2c_client *client, |
| 287 | const struct i2c_device_id *id) |
| 288 | { |
| 289 | struct adv7170 *encoder; |
| 290 | struct v4l2_subdev *sd; |
| 291 | int i; |
| 292 | |
| 293 | /* Check if the adapter supports the needed features */ |
| 294 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
| 295 | return -ENODEV; |
| 296 | |
| 297 | v4l_info(client, "chip found @ 0x%x (%s)\n", |
| 298 | client->addr << 1, client->adapter->name); |
| 299 | |
| 300 | encoder = kzalloc(sizeof(struct adv7170), GFP_KERNEL); |
| 301 | if (encoder == NULL) |
| 302 | return -ENOMEM; |
| 303 | sd = &encoder->sd; |
| 304 | v4l2_i2c_subdev_init(sd, client, &adv7170_ops); |
| 305 | encoder->norm = V4L2_STD_NTSC; |
| 306 | encoder->input = 0; |
| 307 | |
| 308 | i = adv7170_write_block(sd, init_NTSC, sizeof(init_NTSC)); |
| 309 | if (i >= 0) { |
| 310 | i = adv7170_write(sd, 0x07, TR0MODE | TR0RST); |
| 311 | i = adv7170_write(sd, 0x07, TR0MODE); |
| 312 | i = adv7170_read(sd, 0x12); |
| 313 | v4l2_dbg(1, debug, sd, "revision %d\n", i & 1); |
| 314 | } |
| 315 | if (i < 0) |
| 316 | v4l2_dbg(1, debug, sd, "init error 0x%x\n", i); |
| 317 | return 0; |
| 318 | } |
| 319 | |
| 320 | static int adv7170_remove(struct i2c_client *client) |
| 321 | { |
| 322 | struct v4l2_subdev *sd = i2c_get_clientdata(client); |
| 323 | |
| 324 | v4l2_device_unregister_subdev(sd); |
| 325 | kfree(to_adv7170(sd)); |
| 326 | return 0; |
| 327 | } |
| 328 | |
| 329 | /* ----------------------------------------------------------------------- */ |
| 330 | |
| 331 | static const struct i2c_device_id adv7170_id[] = { |
| 332 | { "adv7170", 0 }, |
| 333 | { "adv7171", 0 }, |
| 334 | { } |
| 335 | }; |
| 336 | MODULE_DEVICE_TABLE(i2c, adv7170_id); |
| 337 | |
| 338 | static struct i2c_driver adv7170_driver = { |
| 339 | .driver = { |
| 340 | .owner = THIS_MODULE, |
| 341 | .name = "adv7170", |
| 342 | }, |
| 343 | .probe = adv7170_probe, |
| 344 | .remove = adv7170_remove, |
| 345 | .id_table = adv7170_id, |
| 346 | }; |
| 347 | |
| 348 | static __init int init_adv7170(void) |
| 349 | { |
| 350 | return i2c_add_driver(&adv7170_driver); |
| 351 | } |
| 352 | |
| 353 | static __exit void exit_adv7170(void) |
| 354 | { |
| 355 | i2c_del_driver(&adv7170_driver); |
| 356 | } |
| 357 | |
| 358 | module_init(init_adv7170); |
| 359 | module_exit(exit_adv7170); |