git.oblomov.eu Git - linux-2.6/blob - drivers/media/video/saa7185.c

   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/ioctl.h>
  30 #include <asm/uaccess.h>
  31 #include <linux/i2c.h>
  32 #include <linux/i2c-id.h>
  33 #include <linux/videodev.h>
  34 #include <linux/video_encoder.h>
  35 #include <media/v4l2-common.h>
  36 #include <media/v4l2-i2c-drv-legacy.h>
  37
  38 MODULE_DESCRIPTION("Philips SAA7185 video encoder driver");
  39 MODULE_AUTHOR("Dave Perks");
  40 MODULE_LICENSE("GPL");
  41
  42
  43 static int debug;
  44 module_param(debug, int, 0);
  45 MODULE_PARM_DESC(debug, "Debug level (0-1)");
  46
  47 /* ----------------------------------------------------------------------- */
  48
  49 struct saa7185 {
  50         unsigned char reg[128];
  51
  52         v4l2_std_id norm;
  53         int bright;
  54         int contrast;
  55         int hue;
  56         int sat;
  57 };
  58
  59 /* ----------------------------------------------------------------------- */
  60
  61 static inline int saa7185_read(struct i2c_client *client)
  62 {
  63         return i2c_smbus_read_byte(client);
  64 }
  65
  66 static int saa7185_write(struct i2c_client *client, u8 reg, u8 value)
  67 {
  68         struct saa7185 *encoder = i2c_get_clientdata(client);
  69
  70         v4l_dbg(1, debug, client, "%02x set to %02x\n", reg, value);
  71         encoder->reg[reg] = value;
  72         return i2c_smbus_write_byte_data(client, reg, value);
  73 }
  74
  75 static int saa7185_write_block(struct i2c_client *client,
  76                 const u8 *data, unsigned int len)
  77 {
  78         int ret = -1;
  79         u8 reg;
  80
  81         /* the adv7175 has an autoincrement function, use it if
  82          * the adapter understands raw I2C */
  83         if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
  84                 /* do raw I2C, not smbus compatible */
  85                 struct saa7185 *encoder = i2c_get_clientdata(client);
  86                 u8 block_data[32];
  87                 int block_len;
  88
  89                 while (len >= 2) {
  90                         block_len = 0;
  91                         block_data[block_len++] = reg = data[0];
  92                         do {
  93                                 block_data[block_len++] =
  94                                     encoder->reg[reg++] = data[1];
  95                                 len -= 2;
  96                                 data += 2;
  97                         } while (len >= 2 && data[0] == reg && block_len < 32);
  98                         ret = i2c_master_send(client, block_data, block_len);
  99                         if (ret < 0)
 100                                 break;
 101                 }
 102         } else {
 103                 /* do some slow I2C emulation kind of thing */
 104                 while (len >= 2) {
 105                         reg = *data++;
 106                         ret = saa7185_write(client, reg, *data++);
 107                         if (ret < 0)
 108                                 break;
 109                         len -= 2;
 110                 }
 111         }
 112
 113         return ret;
 114 }
 115
 116 /* ----------------------------------------------------------------------- */
 117
 118 static const unsigned char init_common[] = {
 119         0x3a, 0x0f,             /* CBENB=0, V656=0, VY2C=1,
 120                                  * YUV2C=1, MY2C=1, MUV2C=1 */
 121
 122         0x42, 0x6b,             /* OVLY0=107 */
 123         0x43, 0x00,             /* OVLU0=0     white */
 124         0x44, 0x00,             /* OVLV0=0   */
 125         0x45, 0x22,             /* OVLY1=34  */
 126         0x46, 0xac,             /* OVLU1=172   yellow */
 127         0x47, 0x0e,             /* OVLV1=14  */
 128         0x48, 0x03,             /* OVLY2=3   */
 129         0x49, 0x1d,             /* OVLU2=29    cyan */
 130         0x4a, 0xac,             /* OVLV2=172 */
 131         0x4b, 0xf0,             /* OVLY3=240 */
 132         0x4c, 0xc8,             /* OVLU3=200   green */
 133         0x4d, 0xb9,             /* OVLV3=185 */
 134         0x4e, 0xd4,             /* OVLY4=212 */
 135         0x4f, 0x38,             /* OVLU4=56    magenta */
 136         0x50, 0x47,             /* OVLV4=71  */
 137         0x51, 0xc1,             /* OVLY5=193 */
 138         0x52, 0xe3,             /* OVLU5=227   red */
 139         0x53, 0x54,             /* OVLV5=84  */
 140         0x54, 0xa3,             /* OVLY6=163 */
 141         0x55, 0x54,             /* OVLU6=84    blue */
 142         0x56, 0xf2,             /* OVLV6=242 */
 143         0x57, 0x90,             /* OVLY7=144 */
 144         0x58, 0x00,             /* OVLU7=0     black */
 145         0x59, 0x00,             /* OVLV7=0   */
 146
 147         0x5a, 0x00,             /* CHPS=0    */
 148         0x5b, 0x76,             /* GAINU=118 */
 149         0x5c, 0xa5,             /* GAINV=165 */
 150         0x5d, 0x3c,             /* BLCKL=60  */
 151         0x5e, 0x3a,             /* BLNNL=58  */
 152         0x5f, 0x3a,             /* CCRS=0, BLNVB=58 */
 153         0x60, 0x00,             /* NULL      */
 154
 155         /* 0x61 - 0x66 set according to norm */
 156
 157         0x67, 0x00,             /* 0 : caption 1st byte odd  field */
 158         0x68, 0x00,             /* 0 : caption 2nd byte odd  field */
 159         0x69, 0x00,             /* 0 : caption 1st byte even field */
 160         0x6a, 0x00,             /* 0 : caption 2nd byte even field */
 161
 162         0x6b, 0x91,             /* MODIN=2, PCREF=0, SCCLN=17 */
 163         0x6c, 0x20,             /* SRCV1=0, TRCV2=1, ORCV1=0, PRCV1=0,
 164                                  * CBLF=0, ORCV2=0, PRCV2=0 */
 165         0x6d, 0x00,             /* SRCM1=0, CCEN=0 */
 166
 167         0x6e, 0x0e,             /* HTRIG=0x005, approx. centered, at
 168                                  * least for PAL */
 169         0x6f, 0x00,             /* HTRIG upper bits */
 170         0x70, 0x20,             /* PHRES=0, SBLN=1, VTRIG=0 */
 171
 172         /* The following should not be needed */
 173
 174         0x71, 0x15,             /* BMRQ=0x115 */
 175         0x72, 0x90,             /* EMRQ=0x690 */
 176         0x73, 0x61,             /* EMRQ=0x690, BMRQ=0x115 */
 177         0x74, 0x00,             /* NULL       */
 178         0x75, 0x00,             /* NULL       */
 179         0x76, 0x00,             /* NULL       */
 180         0x77, 0x15,             /* BRCV=0x115 */
 181         0x78, 0x90,             /* ERCV=0x690 */
 182         0x79, 0x61,             /* ERCV=0x690, BRCV=0x115 */
 183
 184         /* Field length controls */
 185
 186         0x7a, 0x70,             /* FLC=0 */
 187
 188         /* The following should not be needed if SBLN = 1 */
 189
 190         0x7b, 0x16,             /* FAL=22 */
 191         0x7c, 0x35,             /* LAL=244 */
 192         0x7d, 0x20,             /* LAL=244, FAL=22 */
 193 };
 194
 195 static const unsigned char init_pal[] = {
 196         0x61, 0x1e,             /* FISE=0, PAL=1, SCBW=1, RTCE=1,
 197                                  * YGS=1, INPI=0, DOWN=0 */
 198         0x62, 0xc8,             /* DECTYP=1, BSTA=72 */
 199         0x63, 0xcb,             /* FSC0 */
 200         0x64, 0x8a,             /* FSC1 */
 201         0x65, 0x09,             /* FSC2 */
 202         0x66, 0x2a,             /* FSC3 */
 203 };
 204
 205 static const unsigned char init_ntsc[] = {
 206         0x61, 0x1d,             /* FISE=1, PAL=0, SCBW=1, RTCE=1,
 207                                  * YGS=1, INPI=0, DOWN=0 */
 208         0x62, 0xe6,             /* DECTYP=1, BSTA=102 */
 209         0x63, 0x1f,             /* FSC0 */
 210         0x64, 0x7c,             /* FSC1 */
 211         0x65, 0xf0,             /* FSC2 */
 212         0x66, 0x21,             /* FSC3 */
 213 };
 214
 215 static int saa7185_command(struct i2c_client *client, unsigned cmd, void *arg)
 216 {
 217         struct saa7185 *encoder = i2c_get_clientdata(client);
 218
 219         switch (cmd) {
 220         case VIDIOC_INT_INIT:
 221                 saa7185_write_block(client, init_common,
 222                                     sizeof(init_common));
 223                 if (encoder->norm & V4L2_STD_NTSC)
 224                         saa7185_write_block(client, init_ntsc,
 225                                             sizeof(init_ntsc));
 226                 else
 227                         saa7185_write_block(client, init_pal,
 228                                             sizeof(init_pal));
 229                 break;
 230
 231         case VIDIOC_INT_S_STD_OUTPUT:
 232         {
 233                 v4l2_std_id *iarg = arg;
 234
 235                 //saa7185_write_block(client, init_common, sizeof(init_common));
 236
 237                 if (*iarg & V4L2_STD_NTSC)
 238                         saa7185_write_block(client, init_ntsc,
 239                                             sizeof(init_ntsc));
 240                 else if (*iarg & V4L2_STD_PAL)
 241                         saa7185_write_block(client, init_pal,
 242                                             sizeof(init_pal));
 243                 else
 244                         return -EINVAL;
 245                 encoder->norm = *iarg;
 246                 break;
 247         }
 248
 249         case VIDIOC_INT_S_VIDEO_ROUTING:
 250         {
 251                 struct v4l2_routing *route = arg;
 252
 253                 /* RJ: route->input = 0: input is from SA7111
 254                  route->input = 1: input is from ZR36060 */
 255
 256                 switch (route->input) {
 257                 case 0:
 258                         /* turn off colorbar */
 259                         saa7185_write(client, 0x3a, 0x0f);
 260                         /* Switch RTCE to 1 */
 261                         saa7185_write(client, 0x61,
 262                                       (encoder->reg[0x61] & 0xf7) | 0x08);
 263                         saa7185_write(client, 0x6e, 0x01);
 264                         break;
 265
 266                 case 1:
 267                         /* turn off colorbar */
 268                         saa7185_write(client, 0x3a, 0x0f);
 269                         /* Switch RTCE to 0 */
 270                         saa7185_write(client, 0x61,
 271                                       (encoder->reg[0x61] & 0xf7) | 0x00);
 272                         /* SW: a slight sync problem... */
 273                         saa7185_write(client, 0x6e, 0x00);
 274                         break;
 275
 276                 case 2:
 277                         /* turn on colorbar */
 278                         saa7185_write(client, 0x3a, 0x8f);
 279                         /* Switch RTCE to 0 */
 280                         saa7185_write(client, 0x61,
 281                                       (encoder->reg[0x61] & 0xf7) | 0x08);
 282                         /* SW: a slight sync problem... */
 283                         saa7185_write(client, 0x6e, 0x01);
 284                         break;
 285
 286                 default:
 287                         return -EINVAL;
 288                 }
 289                 break;
 290         }
 291
 292         default:
 293                 return -EINVAL;
 294         }
 295
 296         return 0;
 297 }
 298
 299 /* ----------------------------------------------------------------------- */
 300
 301 static unsigned short normal_i2c[] = { 0x88 >> 1, I2C_CLIENT_END };
 302
 303 I2C_CLIENT_INSMOD;
 304
 305 static int saa7185_probe(struct i2c_client *client,
 306                         const struct i2c_device_id *id)
 307 {
 308         int i;
 309         struct saa7185 *encoder;
 310
 311         /* Check if the adapter supports the needed features */
 312         if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 313                 return -ENODEV;
 314
 315         v4l_info(client, "chip found @ 0x%x (%s)\n",
 316                         client->addr << 1, client->adapter->name);
 317
 318         encoder = kzalloc(sizeof(struct saa7185), GFP_KERNEL);
 319         if (encoder == NULL)
 320                 return -ENOMEM;
 321         encoder->norm = V4L2_STD_NTSC;
 322         i2c_set_clientdata(client, encoder);
 323
 324         i = saa7185_write_block(client, init_common, sizeof(init_common));
 325         if (i >= 0)
 326                 i = saa7185_write_block(client, init_ntsc, sizeof(init_ntsc));
 327         if (i < 0)
 328                 v4l_dbg(1, debug, client, "init error %d\n", i);
 329         else
 330                 v4l_dbg(1, debug, client, "revision 0x%x\n",
 331                                 saa7185_read(client) >> 5);
 332         return 0;
 333 }
 334
 335 static int saa7185_remove(struct i2c_client *client)
 336 {
 337         struct saa7185 *encoder = i2c_get_clientdata(client);
 338
 339         saa7185_write(client, 0x61, (encoder->reg[0x61]) | 0x40);       /* SW: output off is active */
 340         //saa7185_write(client, 0x3a, (encoder->reg[0x3a]) | 0x80); /* SW: color bar */
 341
 342         kfree(encoder);
 343         return 0;
 344 }
 345
 346 /* ----------------------------------------------------------------------- */
 347
 348 static const struct i2c_device_id saa7185_id[] = {
 349         { "saa7185", 0 },
 350         { }
 351 };
 352 MODULE_DEVICE_TABLE(i2c, saa7185_id);
 353
 354 static struct v4l2_i2c_driver_data v4l2_i2c_data = {
 355         .name = "saa7185",
 356         .driverid = I2C_DRIVERID_SAA7185B,
 357         .command = saa7185_command,
 358         .probe = saa7185_probe,
 359         .remove = saa7185_remove,
 360         .id_table = saa7185_id,
 361 };