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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 | // SPDX-License-Identifier: GPL-2.0-or-later /* * saa7185 - Philips SAA7185B video encoder driver version 0.0.3 * * Copyright (C) 1998 Dave Perks <dperks@ibm.net> * * Slight changes for video timing and attachment output by * Wolfgang Scherr <scherr@net4you.net> * * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net> * - moved over to linux>=2.4.x i2c protocol (1/1/2003) */ #include <linux/module.h> #include <linux/types.h> #include <linux/slab.h> #include <linux/ioctl.h> #include <linux/uaccess.h> #include <linux/i2c.h> #include <linux/videodev2.h> #include <media/v4l2-device.h> MODULE_DESCRIPTION("Philips SAA7185 video encoder driver"); MODULE_AUTHOR("Dave Perks"); MODULE_LICENSE("GPL"); static int debug; module_param(debug, int, 0); MODULE_PARM_DESC(debug, "Debug level (0-1)"); /* ----------------------------------------------------------------------- */ struct saa7185 { struct v4l2_subdev sd; unsigned char reg[128]; v4l2_std_id norm; }; static inline struct saa7185 *to_saa7185(struct v4l2_subdev *sd) { return container_of(sd, struct saa7185, sd); } /* ----------------------------------------------------------------------- */ static inline int saa7185_read(struct v4l2_subdev *sd) { struct i2c_client *client = v4l2_get_subdevdata(sd); return i2c_smbus_read_byte(client); } static int saa7185_write(struct v4l2_subdev *sd, u8 reg, u8 value) { struct i2c_client *client = v4l2_get_subdevdata(sd); struct saa7185 *encoder = to_saa7185(sd); v4l2_dbg(1, debug, sd, "%02x set to %02x\n", reg, value); encoder->reg[reg] = value; return i2c_smbus_write_byte_data(client, reg, value); } static int saa7185_write_block(struct v4l2_subdev *sd, const u8 *data, unsigned int len) { struct i2c_client *client = v4l2_get_subdevdata(sd); struct saa7185 *encoder = to_saa7185(sd); int ret = -1; u8 reg; /* the adv7175 has an autoincrement function, use it if * the adapter understands raw I2C */ if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { /* do raw I2C, not smbus compatible */ u8 block_data[32]; int block_len; while (len >= 2) { block_len = 0; block_data[block_len++] = reg = data[0]; do { block_data[block_len++] = encoder->reg[reg++] = data[1]; len -= 2; data += 2; } while (len >= 2 && data[0] == reg && block_len < 32); ret = i2c_master_send(client, block_data, block_len); if (ret < 0) break; } } else { /* do some slow I2C emulation kind of thing */ while (len >= 2) { reg = *data++; ret = saa7185_write(sd, reg, *data++); if (ret < 0) break; len -= 2; } } return ret; } /* ----------------------------------------------------------------------- */ static const unsigned char init_common[] = { 0x3a, 0x0f, /* CBENB=0, V656=0, VY2C=1, * YUV2C=1, MY2C=1, MUV2C=1 */ 0x42, 0x6b, /* OVLY0=107 */ 0x43, 0x00, /* OVLU0=0 white */ 0x44, 0x00, /* OVLV0=0 */ 0x45, 0x22, /* OVLY1=34 */ 0x46, 0xac, /* OVLU1=172 yellow */ 0x47, 0x0e, /* OVLV1=14 */ 0x48, 0x03, /* OVLY2=3 */ 0x49, 0x1d, /* OVLU2=29 cyan */ 0x4a, 0xac, /* OVLV2=172 */ 0x4b, 0xf0, /* OVLY3=240 */ 0x4c, 0xc8, /* OVLU3=200 green */ 0x4d, 0xb9, /* OVLV3=185 */ 0x4e, 0xd4, /* OVLY4=212 */ 0x4f, 0x38, /* OVLU4=56 magenta */ 0x50, 0x47, /* OVLV4=71 */ 0x51, 0xc1, /* OVLY5=193 */ 0x52, 0xe3, /* OVLU5=227 red */ 0x53, 0x54, /* OVLV5=84 */ 0x54, 0xa3, /* OVLY6=163 */ 0x55, 0x54, /* OVLU6=84 blue */ 0x56, 0xf2, /* OVLV6=242 */ 0x57, 0x90, /* OVLY7=144 */ 0x58, 0x00, /* OVLU7=0 black */ 0x59, 0x00, /* OVLV7=0 */ 0x5a, 0x00, /* CHPS=0 */ 0x5b, 0x76, /* GAINU=118 */ 0x5c, 0xa5, /* GAINV=165 */ 0x5d, 0x3c, /* BLCKL=60 */ 0x5e, 0x3a, /* BLNNL=58 */ 0x5f, 0x3a, /* CCRS=0, BLNVB=58 */ 0x60, 0x00, /* NULL */ /* 0x61 - 0x66 set according to norm */ 0x67, 0x00, /* 0 : caption 1st byte odd field */ 0x68, 0x00, /* 0 : caption 2nd byte odd field */ 0x69, 0x00, /* 0 : caption 1st byte even field */ 0x6a, 0x00, /* 0 : caption 2nd byte even field */ 0x6b, 0x91, /* MODIN=2, PCREF=0, SCCLN=17 */ 0x6c, 0x20, /* SRCV1=0, TRCV2=1, ORCV1=0, PRCV1=0, * CBLF=0, ORCV2=0, PRCV2=0 */ 0x6d, 0x00, /* SRCM1=0, CCEN=0 */ 0x6e, 0x0e, /* HTRIG=0x005, approx. centered, at * least for PAL */ 0x6f, 0x00, /* HTRIG upper bits */ 0x70, 0x20, /* PHRES=0, SBLN=1, VTRIG=0 */ /* The following should not be needed */ 0x71, 0x15, /* BMRQ=0x115 */ 0x72, 0x90, /* EMRQ=0x690 */ 0x73, 0x61, /* EMRQ=0x690, BMRQ=0x115 */ 0x74, 0x00, /* NULL */ 0x75, 0x00, /* NULL */ 0x76, 0x00, /* NULL */ 0x77, 0x15, /* BRCV=0x115 */ 0x78, 0x90, /* ERCV=0x690 */ 0x79, 0x61, /* ERCV=0x690, BRCV=0x115 */ /* Field length controls */ 0x7a, 0x70, /* FLC=0 */ /* The following should not be needed if SBLN = 1 */ 0x7b, 0x16, /* FAL=22 */ 0x7c, 0x35, /* LAL=244 */ 0x7d, 0x20, /* LAL=244, FAL=22 */ }; static const unsigned char init_pal[] = { 0x61, 0x1e, /* FISE=0, PAL=1, SCBW=1, RTCE=1, * YGS=1, INPI=0, DOWN=0 */ 0x62, 0xc8, /* DECTYP=1, BSTA=72 */ 0x63, 0xcb, /* FSC0 */ 0x64, 0x8a, /* FSC1 */ 0x65, 0x09, /* FSC2 */ 0x66, 0x2a, /* FSC3 */ }; static const unsigned char init_ntsc[] = { 0x61, 0x1d, /* FISE=1, PAL=0, SCBW=1, RTCE=1, * YGS=1, INPI=0, DOWN=0 */ 0x62, 0xe6, /* DECTYP=1, BSTA=102 */ 0x63, 0x1f, /* FSC0 */ 0x64, 0x7c, /* FSC1 */ 0x65, 0xf0, /* FSC2 */ 0x66, 0x21, /* FSC3 */ }; static int saa7185_init(struct v4l2_subdev *sd, u32 val) { struct saa7185 *encoder = to_saa7185(sd); saa7185_write_block(sd, init_common, sizeof(init_common)); if (encoder->norm & V4L2_STD_NTSC) saa7185_write_block(sd, init_ntsc, sizeof(init_ntsc)); else saa7185_write_block(sd, init_pal, sizeof(init_pal)); return 0; } static int saa7185_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std) { struct saa7185 *encoder = to_saa7185(sd); if (std & V4L2_STD_NTSC) saa7185_write_block(sd, init_ntsc, sizeof(init_ntsc)); else if (std & V4L2_STD_PAL) saa7185_write_block(sd, init_pal, sizeof(init_pal)); else return -EINVAL; encoder->norm = std; return 0; } static int saa7185_s_routing(struct v4l2_subdev *sd, u32 input, u32 output, u32 config) { struct saa7185 *encoder = to_saa7185(sd); /* RJ: input = 0: input is from SA7111 input = 1: input is from ZR36060 */ switch (input) { case 0: /* turn off colorbar */ saa7185_write(sd, 0x3a, 0x0f); /* Switch RTCE to 1 */ saa7185_write(sd, 0x61, (encoder->reg[0x61] & 0xf7) | 0x08); saa7185_write(sd, 0x6e, 0x01); break; case 1: /* turn off colorbar */ saa7185_write(sd, 0x3a, 0x0f); /* Switch RTCE to 0 */ saa7185_write(sd, 0x61, (encoder->reg[0x61] & 0xf7) | 0x00); /* SW: a slight sync problem... */ saa7185_write(sd, 0x6e, 0x00); break; case 2: /* turn on colorbar */ saa7185_write(sd, 0x3a, 0x8f); /* Switch RTCE to 0 */ saa7185_write(sd, 0x61, (encoder->reg[0x61] & 0xf7) | 0x08); /* SW: a slight sync problem... */ saa7185_write(sd, 0x6e, 0x01); break; default: return -EINVAL; } return 0; } /* ----------------------------------------------------------------------- */ static const struct v4l2_subdev_core_ops saa7185_core_ops = { .init = saa7185_init, }; static const struct v4l2_subdev_video_ops saa7185_video_ops = { .s_std_output = saa7185_s_std_output, .s_routing = saa7185_s_routing, }; static const struct v4l2_subdev_ops saa7185_ops = { .core = &saa7185_core_ops, .video = &saa7185_video_ops, }; /* ----------------------------------------------------------------------- */ static int saa7185_probe(struct i2c_client *client, const struct i2c_device_id *id) { int i; struct saa7185 *encoder; struct v4l2_subdev *sd; /* Check if the adapter supports the needed features */ if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) return -ENODEV; v4l_info(client, "chip found @ 0x%x (%s)\n", client->addr << 1, client->adapter->name); encoder = devm_kzalloc(&client->dev, sizeof(*encoder), GFP_KERNEL); if (encoder == NULL) return -ENOMEM; encoder->norm = V4L2_STD_NTSC; sd = &encoder->sd; v4l2_i2c_subdev_init(sd, client, &saa7185_ops); i = saa7185_write_block(sd, init_common, sizeof(init_common)); if (i >= 0) i = saa7185_write_block(sd, init_ntsc, sizeof(init_ntsc)); if (i < 0) v4l2_dbg(1, debug, sd, "init error %d\n", i); else v4l2_dbg(1, debug, sd, "revision 0x%x\n", saa7185_read(sd) >> 5); return 0; } static void saa7185_remove(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); struct saa7185 *encoder = to_saa7185(sd); v4l2_device_unregister_subdev(sd); /* SW: output off is active */ saa7185_write(sd, 0x61, (encoder->reg[0x61]) | 0x40); } /* ----------------------------------------------------------------------- */ static const struct i2c_device_id saa7185_id[] = { { "saa7185", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, saa7185_id); static struct i2c_driver saa7185_driver = { .driver = { .name = "saa7185", }, .probe = saa7185_probe, .remove = saa7185_remove, .id_table = saa7185_id, }; module_i2c_driver(saa7185_driver); |