1/* 2 * saa7185 - Philips SAA7185B video encoder driver version 0.0.3 3 * 4 * Copyright (C) 1998 Dave Perks <dperks@ibm.net> 5 * 6 * Slight changes for video timing and attachment output by 7 * Wolfgang Scherr <scherr@net4you.net> 8 * 9 * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net> 10 * - moved over to linux>=2.4.x i2c protocol (1/1/2003) 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License as published by 14 * the Free Software Foundation; either version 2 of the License, or 15 * (at your option) any later version. 16 * 17 * This program is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU General Public License for more details. 21 * 22 * You should have received a copy of the GNU General Public License 23 * along with this program; if not, write to the Free Software 24 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 25 */ 26 27#include <linux/module.h> 28#include <linux/types.h> 29#include <linux/slab.h> 30#include <linux/ioctl.h> 31#include <asm/uaccess.h> 32#include <linux/i2c.h> 33#include <linux/i2c-id.h> 34#include <linux/videodev2.h> 35#include <media/v4l2-device.h> 36#include <media/v4l2-chip-ident.h> 37#include <media/v4l2-i2c-drv.h> 38 39MODULE_DESCRIPTION("Philips SAA7185 video encoder driver"); 40MODULE_AUTHOR("Dave Perks"); 41MODULE_LICENSE("GPL"); 42 43static int debug; 44module_param(debug, int, 0); 45MODULE_PARM_DESC(debug, "Debug level (0-1)"); 46 47 48/* ----------------------------------------------------------------------- */ 49 50struct saa7185 { 51 struct v4l2_subdev sd; 52 unsigned char reg[128]; 53 54 v4l2_std_id norm; 55}; 56 57static inline struct saa7185 *to_saa7185(struct v4l2_subdev *sd) 58{ 59 return container_of(sd, struct saa7185, sd); 60} 61 62/* ----------------------------------------------------------------------- */ 63 64static inline int saa7185_read(struct v4l2_subdev *sd) 65{ 66 struct i2c_client *client = v4l2_get_subdevdata(sd); 67 68 return i2c_smbus_read_byte(client); 69} 70 71static int saa7185_write(struct v4l2_subdev *sd, u8 reg, u8 value) 72{ 73 struct i2c_client *client = v4l2_get_subdevdata(sd); 74 struct saa7185 *encoder = to_saa7185(sd); 75 76 v4l2_dbg(1, debug, sd, "%02x set to %02x\n", reg, value); 77 encoder->reg[reg] = value; 78 return i2c_smbus_write_byte_data(client, reg, value); 79} 80 81static int saa7185_write_block(struct v4l2_subdev *sd, 82 const u8 *data, unsigned int len) 83{ 84 struct i2c_client *client = v4l2_get_subdevdata(sd); 85 struct saa7185 *encoder = to_saa7185(sd); 86 int ret = -1; 87 u8 reg; 88 89 /* the adv7175 has an autoincrement function, use it if 90 * the adapter understands raw I2C */ 91 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { 92 /* do raw I2C, not smbus compatible */ 93 u8 block_data[32]; 94 int block_len; 95 96 while (len >= 2) { 97 block_len = 0; 98 block_data[block_len++] = reg = data[0]; 99 do { 100 block_data[block_len++] = 101 encoder->reg[reg++] = data[1]; 102 len -= 2; 103 data += 2; 104 } while (len >= 2 && data[0] == reg && block_len < 32); 105 ret = i2c_master_send(client, block_data, block_len); 106 if (ret < 0) 107 break; 108 } 109 } else { 110 /* do some slow I2C emulation kind of thing */ 111 while (len >= 2) { 112 reg = *data++; 113 ret = saa7185_write(sd, reg, *data++); 114 if (ret < 0) 115 break; 116 len -= 2; 117 } 118 } 119 120 return ret; 121} 122 123/* ----------------------------------------------------------------------- */ 124 125static const unsigned char init_common[] = { 126 0x3a, 0x0f, /* CBENB=0, V656=0, VY2C=1, 127 * YUV2C=1, MY2C=1, MUV2C=1 */ 128 129 0x42, 0x6b, /* OVLY0=107 */ 130 0x43, 0x00, /* OVLU0=0 white */ 131 0x44, 0x00, /* OVLV0=0 */ 132 0x45, 0x22, /* OVLY1=34 */ 133 0x46, 0xac, /* OVLU1=172 yellow */ 134 0x47, 0x0e, /* OVLV1=14 */ 135 0x48, 0x03, /* OVLY2=3 */ 136 0x49, 0x1d, /* OVLU2=29 cyan */ 137 0x4a, 0xac, /* OVLV2=172 */ 138 0x4b, 0xf0, /* OVLY3=240 */ 139 0x4c, 0xc8, /* OVLU3=200 green */ 140 0x4d, 0xb9, /* OVLV3=185 */ 141 0x4e, 0xd4, /* OVLY4=212 */ 142 0x4f, 0x38, /* OVLU4=56 magenta */ 143 0x50, 0x47, /* OVLV4=71 */ 144 0x51, 0xc1, /* OVLY5=193 */ 145 0x52, 0xe3, /* OVLU5=227 red */ 146 0x53, 0x54, /* OVLV5=84 */ 147 0x54, 0xa3, /* OVLY6=163 */ 148 0x55, 0x54, /* OVLU6=84 blue */ 149 0x56, 0xf2, /* OVLV6=242 */ 150 0x57, 0x90, /* OVLY7=144 */ 151 0x58, 0x00, /* OVLU7=0 black */ 152 0x59, 0x00, /* OVLV7=0 */ 153 154 0x5a, 0x00, /* CHPS=0 */ 155 0x5b, 0x76, /* GAINU=118 */ 156 0x5c, 0xa5, /* GAINV=165 */ 157 0x5d, 0x3c, /* BLCKL=60 */ 158 0x5e, 0x3a, /* BLNNL=58 */ 159 0x5f, 0x3a, /* CCRS=0, BLNVB=58 */ 160 0x60, 0x00, /* NULL */ 161 162 /* 0x61 - 0x66 set according to norm */ 163 164 0x67, 0x00, /* 0 : caption 1st byte odd field */ 165 0x68, 0x00, /* 0 : caption 2nd byte odd field */ 166 0x69, 0x00, /* 0 : caption 1st byte even field */ 167 0x6a, 0x00, /* 0 : caption 2nd byte even field */ 168 169 0x6b, 0x91, /* MODIN=2, PCREF=0, SCCLN=17 */ 170 0x6c, 0x20, /* SRCV1=0, TRCV2=1, ORCV1=0, PRCV1=0, 171 * CBLF=0, ORCV2=0, PRCV2=0 */ 172 0x6d, 0x00, /* SRCM1=0, CCEN=0 */ 173 174 0x6e, 0x0e, /* HTRIG=0x005, approx. centered, at 175 * least for PAL */ 176 0x6f, 0x00, /* HTRIG upper bits */ 177 0x70, 0x20, /* PHRES=0, SBLN=1, VTRIG=0 */ 178 179 /* The following should not be needed */ 180 181 0x71, 0x15, /* BMRQ=0x115 */ 182 0x72, 0x90, /* EMRQ=0x690 */ 183 0x73, 0x61, /* EMRQ=0x690, BMRQ=0x115 */ 184 0x74, 0x00, /* NULL */ 185 0x75, 0x00, /* NULL */ 186 0x76, 0x00, /* NULL */ 187 0x77, 0x15, /* BRCV=0x115 */ 188 0x78, 0x90, /* ERCV=0x690 */ 189 0x79, 0x61, /* ERCV=0x690, BRCV=0x115 */ 190 191 /* Field length controls */ 192 193 0x7a, 0x70, /* FLC=0 */ 194 195 /* The following should not be needed if SBLN = 1 */ 196 197 0x7b, 0x16, /* FAL=22 */ 198 0x7c, 0x35, /* LAL=244 */ 199 0x7d, 0x20, /* LAL=244, FAL=22 */ 200}; 201 202static const unsigned char init_pal[] = { 203 0x61, 0x1e, /* FISE=0, PAL=1, SCBW=1, RTCE=1, 204 * YGS=1, INPI=0, DOWN=0 */ 205 0x62, 0xc8, /* DECTYP=1, BSTA=72 */ 206 0x63, 0xcb, /* FSC0 */ 207 0x64, 0x8a, /* FSC1 */ 208 0x65, 0x09, /* FSC2 */ 209 0x66, 0x2a, /* FSC3 */ 210}; 211 212static const unsigned char init_ntsc[] = { 213 0x61, 0x1d, /* FISE=1, PAL=0, SCBW=1, RTCE=1, 214 * YGS=1, INPI=0, DOWN=0 */ 215 0x62, 0xe6, /* DECTYP=1, BSTA=102 */ 216 0x63, 0x1f, /* FSC0 */ 217 0x64, 0x7c, /* FSC1 */ 218 0x65, 0xf0, /* FSC2 */ 219 0x66, 0x21, /* FSC3 */ 220}; 221 222 223static int saa7185_init(struct v4l2_subdev *sd, u32 val) 224{ 225 struct saa7185 *encoder = to_saa7185(sd); 226 227 saa7185_write_block(sd, init_common, sizeof(init_common)); 228 if (encoder->norm & V4L2_STD_NTSC) 229 saa7185_write_block(sd, init_ntsc, sizeof(init_ntsc)); 230 else 231 saa7185_write_block(sd, init_pal, sizeof(init_pal)); 232 return 0; 233} 234 235static int saa7185_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std) 236{ 237 struct saa7185 *encoder = to_saa7185(sd); 238 239 if (std & V4L2_STD_NTSC) 240 saa7185_write_block(sd, init_ntsc, sizeof(init_ntsc)); 241 else if (std & V4L2_STD_PAL) 242 saa7185_write_block(sd, init_pal, sizeof(init_pal)); 243 else 244 return -EINVAL; 245 encoder->norm = std; 246 return 0; 247} 248 249static int saa7185_s_routing(struct v4l2_subdev *sd, 250 u32 input, u32 output, u32 config) 251{ 252 struct saa7185 *encoder = to_saa7185(sd); 253 254 /* RJ: input = 0: input is from SA7111 255 input = 1: input is from ZR36060 */ 256 257 switch (input) { 258 case 0: 259 /* turn off colorbar */ 260 saa7185_write(sd, 0x3a, 0x0f); 261 /* Switch RTCE to 1 */ 262 saa7185_write(sd, 0x61, (encoder->reg[0x61] & 0xf7) | 0x08); 263 saa7185_write(sd, 0x6e, 0x01); 264 break; 265 266 case 1: 267 /* turn off colorbar */ 268 saa7185_write(sd, 0x3a, 0x0f); 269 /* Switch RTCE to 0 */ 270 saa7185_write(sd, 0x61, (encoder->reg[0x61] & 0xf7) | 0x00); 271 /* SW: a slight sync problem... */ 272 saa7185_write(sd, 0x6e, 0x00); 273 break; 274 275 case 2: 276 /* turn on colorbar */ 277 saa7185_write(sd, 0x3a, 0x8f); 278 /* Switch RTCE to 0 */ 279 saa7185_write(sd, 0x61, (encoder->reg[0x61] & 0xf7) | 0x08); 280 /* SW: a slight sync problem... */ 281 saa7185_write(sd, 0x6e, 0x01); 282 break; 283 284 default: 285 return -EINVAL; 286 } 287 return 0; 288} 289 290static int saa7185_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip) 291{ 292 struct i2c_client *client = v4l2_get_subdevdata(sd); 293 294 return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_SAA7185, 0); 295} 296 297/* ----------------------------------------------------------------------- */ 298 299static const struct v4l2_subdev_core_ops saa7185_core_ops = { 300 .g_chip_ident = saa7185_g_chip_ident, 301 .init = saa7185_init, 302}; 303 304static const struct v4l2_subdev_video_ops saa7185_video_ops = { 305 .s_std_output = saa7185_s_std_output, 306 .s_routing = saa7185_s_routing, 307}; 308 309static const struct v4l2_subdev_ops saa7185_ops = { 310 .core = &saa7185_core_ops, 311 .video = &saa7185_video_ops, 312}; 313 314 315/* ----------------------------------------------------------------------- */ 316 317static int saa7185_probe(struct i2c_client *client, 318 const struct i2c_device_id *id) 319{ 320 int i; 321 struct saa7185 *encoder; 322 struct v4l2_subdev *sd; 323 324 /* Check if the adapter supports the needed features */ 325 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 326 return -ENODEV; 327 328 v4l_info(client, "chip found @ 0x%x (%s)\n", 329 client->addr << 1, client->adapter->name); 330 331 encoder = kzalloc(sizeof(struct saa7185), GFP_KERNEL); 332 if (encoder == NULL) 333 return -ENOMEM; 334 encoder->norm = V4L2_STD_NTSC; 335 sd = &encoder->sd; 336 v4l2_i2c_subdev_init(sd, client, &saa7185_ops); 337 338 i = saa7185_write_block(sd, init_common, sizeof(init_common)); 339 if (i >= 0) 340 i = saa7185_write_block(sd, init_ntsc, sizeof(init_ntsc)); 341 if (i < 0) 342 v4l2_dbg(1, debug, sd, "init error %d\n", i); 343 else 344 v4l2_dbg(1, debug, sd, "revision 0x%x\n", 345 saa7185_read(sd) >> 5); 346 return 0; 347} 348 349static int saa7185_remove(struct i2c_client *client) 350{ 351 struct v4l2_subdev *sd = i2c_get_clientdata(client); 352 struct saa7185 *encoder = to_saa7185(sd); 353 354 v4l2_device_unregister_subdev(sd); 355 /* SW: output off is active */ 356 saa7185_write(sd, 0x61, (encoder->reg[0x61]) | 0x40); 357 kfree(encoder); 358 return 0; 359} 360 361/* ----------------------------------------------------------------------- */ 362 363static const struct i2c_device_id saa7185_id[] = { 364 { "saa7185", 0 }, 365 { } 366}; 367MODULE_DEVICE_TABLE(i2c, saa7185_id); 368 369static struct v4l2_i2c_driver_data v4l2_i2c_data = { 370 .name = "saa7185", 371 .probe = saa7185_probe, 372 .remove = saa7185_remove, 373 .id_table = saa7185_id, 374}; 375