V4L/DVB (10499): saa7146: convert saa7146 and mxb in particular to v4l2_subdev.
[linux-2.6] / 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         int norm;
53         int enable;
54         int bright;
55         int contrast;
56         int hue;
57         int sat;
58 };
59
60 /* ----------------------------------------------------------------------- */
61
62 static inline int saa7185_read(struct i2c_client *client)
63 {
64         return i2c_smbus_read_byte(client);
65 }
66
67 static int saa7185_write(struct i2c_client *client, u8 reg, u8 value)
68 {
69         struct saa7185 *encoder = i2c_get_clientdata(client);
70
71         v4l_dbg(1, debug, client, "%02x set to %02x\n", reg, value);
72         encoder->reg[reg] = value;
73         return i2c_smbus_write_byte_data(client, reg, value);
74 }
75
76 static int saa7185_write_block(struct i2c_client *client,
77                 const u8 *data, unsigned int len)
78 {
79         int ret = -1;
80         u8 reg;
81
82         /* the adv7175 has an autoincrement function, use it if
83          * the adapter understands raw I2C */
84         if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
85                 /* do raw I2C, not smbus compatible */
86                 struct saa7185 *encoder = i2c_get_clientdata(client);
87                 u8 block_data[32];
88                 int block_len;
89
90                 while (len >= 2) {
91                         block_len = 0;
92                         block_data[block_len++] = reg = data[0];
93                         do {
94                                 block_data[block_len++] =
95                                     encoder->reg[reg++] = data[1];
96                                 len -= 2;
97                                 data += 2;
98                         } while (len >= 2 && data[0] == reg && block_len < 32);
99                         ret = i2c_master_send(client, block_data, block_len);
100                         if (ret < 0)
101                                 break;
102                 }
103         } else {
104                 /* do some slow I2C emulation kind of thing */
105                 while (len >= 2) {
106                         reg = *data++;
107                         ret = saa7185_write(client, reg, *data++);
108                         if (ret < 0)
109                                 break;
110                         len -= 2;
111                 }
112         }
113
114         return ret;
115 }
116
117 /* ----------------------------------------------------------------------- */
118
119 static const unsigned char init_common[] = {
120         0x3a, 0x0f,             /* CBENB=0, V656=0, VY2C=1,
121                                  * YUV2C=1, MY2C=1, MUV2C=1 */
122
123         0x42, 0x6b,             /* OVLY0=107 */
124         0x43, 0x00,             /* OVLU0=0     white */
125         0x44, 0x00,             /* OVLV0=0   */
126         0x45, 0x22,             /* OVLY1=34  */
127         0x46, 0xac,             /* OVLU1=172   yellow */
128         0x47, 0x0e,             /* OVLV1=14  */
129         0x48, 0x03,             /* OVLY2=3   */
130         0x49, 0x1d,             /* OVLU2=29    cyan */
131         0x4a, 0xac,             /* OVLV2=172 */
132         0x4b, 0xf0,             /* OVLY3=240 */
133         0x4c, 0xc8,             /* OVLU3=200   green */
134         0x4d, 0xb9,             /* OVLV3=185 */
135         0x4e, 0xd4,             /* OVLY4=212 */
136         0x4f, 0x38,             /* OVLU4=56    magenta */
137         0x50, 0x47,             /* OVLV4=71  */
138         0x51, 0xc1,             /* OVLY5=193 */
139         0x52, 0xe3,             /* OVLU5=227   red */
140         0x53, 0x54,             /* OVLV5=84  */
141         0x54, 0xa3,             /* OVLY6=163 */
142         0x55, 0x54,             /* OVLU6=84    blue */
143         0x56, 0xf2,             /* OVLV6=242 */
144         0x57, 0x90,             /* OVLY7=144 */
145         0x58, 0x00,             /* OVLU7=0     black */
146         0x59, 0x00,             /* OVLV7=0   */
147
148         0x5a, 0x00,             /* CHPS=0    */
149         0x5b, 0x76,             /* GAINU=118 */
150         0x5c, 0xa5,             /* GAINV=165 */
151         0x5d, 0x3c,             /* BLCKL=60  */
152         0x5e, 0x3a,             /* BLNNL=58  */
153         0x5f, 0x3a,             /* CCRS=0, BLNVB=58 */
154         0x60, 0x00,             /* NULL      */
155
156         /* 0x61 - 0x66 set according to norm */
157
158         0x67, 0x00,             /* 0 : caption 1st byte odd  field */
159         0x68, 0x00,             /* 0 : caption 2nd byte odd  field */
160         0x69, 0x00,             /* 0 : caption 1st byte even field */
161         0x6a, 0x00,             /* 0 : caption 2nd byte even field */
162
163         0x6b, 0x91,             /* MODIN=2, PCREF=0, SCCLN=17 */
164         0x6c, 0x20,             /* SRCV1=0, TRCV2=1, ORCV1=0, PRCV1=0,
165                                  * CBLF=0, ORCV2=0, PRCV2=0 */
166         0x6d, 0x00,             /* SRCM1=0, CCEN=0 */
167
168         0x6e, 0x0e,             /* HTRIG=0x005, approx. centered, at
169                                  * least for PAL */
170         0x6f, 0x00,             /* HTRIG upper bits */
171         0x70, 0x20,             /* PHRES=0, SBLN=1, VTRIG=0 */
172
173         /* The following should not be needed */
174
175         0x71, 0x15,             /* BMRQ=0x115 */
176         0x72, 0x90,             /* EMRQ=0x690 */
177         0x73, 0x61,             /* EMRQ=0x690, BMRQ=0x115 */
178         0x74, 0x00,             /* NULL       */
179         0x75, 0x00,             /* NULL       */
180         0x76, 0x00,             /* NULL       */
181         0x77, 0x15,             /* BRCV=0x115 */
182         0x78, 0x90,             /* ERCV=0x690 */
183         0x79, 0x61,             /* ERCV=0x690, BRCV=0x115 */
184
185         /* Field length controls */
186
187         0x7a, 0x70,             /* FLC=0 */
188
189         /* The following should not be needed if SBLN = 1 */
190
191         0x7b, 0x16,             /* FAL=22 */
192         0x7c, 0x35,             /* LAL=244 */
193         0x7d, 0x20,             /* LAL=244, FAL=22 */
194 };
195
196 static const unsigned char init_pal[] = {
197         0x61, 0x1e,             /* FISE=0, PAL=1, SCBW=1, RTCE=1,
198                                  * YGS=1, INPI=0, DOWN=0 */
199         0x62, 0xc8,             /* DECTYP=1, BSTA=72 */
200         0x63, 0xcb,             /* FSC0 */
201         0x64, 0x8a,             /* FSC1 */
202         0x65, 0x09,             /* FSC2 */
203         0x66, 0x2a,             /* FSC3 */
204 };
205
206 static const unsigned char init_ntsc[] = {
207         0x61, 0x1d,             /* FISE=1, PAL=0, SCBW=1, RTCE=1,
208                                  * YGS=1, INPI=0, DOWN=0 */
209         0x62, 0xe6,             /* DECTYP=1, BSTA=102 */
210         0x63, 0x1f,             /* FSC0 */
211         0x64, 0x7c,             /* FSC1 */
212         0x65, 0xf0,             /* FSC2 */
213         0x66, 0x21,             /* FSC3 */
214 };
215
216 static int saa7185_command(struct i2c_client *client, unsigned cmd, void *arg)
217 {
218         struct saa7185 *encoder = i2c_get_clientdata(client);
219
220         switch (cmd) {
221         case 0:
222                 saa7185_write_block(client, init_common,
223                                     sizeof(init_common));
224                 switch (encoder->norm) {
225
226                 case VIDEO_MODE_NTSC:
227                         saa7185_write_block(client, init_ntsc,
228                                             sizeof(init_ntsc));
229                         break;
230
231                 case VIDEO_MODE_PAL:
232                         saa7185_write_block(client, init_pal,
233                                             sizeof(init_pal));
234                         break;
235                 }
236                 break;
237
238         case ENCODER_GET_CAPABILITIES:
239         {
240                 struct video_encoder_capability *cap = arg;
241
242                 cap->flags =
243                     VIDEO_ENCODER_PAL | VIDEO_ENCODER_NTSC |
244                     VIDEO_ENCODER_SECAM | VIDEO_ENCODER_CCIR;
245                 cap->inputs = 1;
246                 cap->outputs = 1;
247                 break;
248         }
249
250         case ENCODER_SET_NORM:
251         {
252                 int *iarg = arg;
253
254                 //saa7185_write_block(client, init_common, sizeof(init_common));
255
256                 switch (*iarg) {
257                 case VIDEO_MODE_NTSC:
258                         saa7185_write_block(client, init_ntsc,
259                                             sizeof(init_ntsc));
260                         break;
261
262                 case VIDEO_MODE_PAL:
263                         saa7185_write_block(client, init_pal,
264                                             sizeof(init_pal));
265                         break;
266
267                 case VIDEO_MODE_SECAM:
268                 default:
269                         return -EINVAL;
270                 }
271                 encoder->norm = *iarg;
272                 break;
273         }
274
275         case ENCODER_SET_INPUT:
276         {
277                 int *iarg = arg;
278
279                 /* RJ: *iarg = 0: input is from SA7111
280                  *iarg = 1: input is from ZR36060 */
281
282                 switch (*iarg) {
283                 case 0:
284                         /* Switch RTCE to 1 */
285                         saa7185_write(client, 0x61,
286                                       (encoder->reg[0x61] & 0xf7) | 0x08);
287                         saa7185_write(client, 0x6e, 0x01);
288                         break;
289
290                 case 1:
291                         /* Switch RTCE to 0 */
292                         saa7185_write(client, 0x61,
293                                       (encoder->reg[0x61] & 0xf7) | 0x00);
294                         /* SW: a slight sync problem... */
295                         saa7185_write(client, 0x6e, 0x00);
296                         break;
297
298                 default:
299                         return -EINVAL;
300                 }
301                 break;
302         }
303
304         case ENCODER_SET_OUTPUT:
305         {
306                 int *iarg = arg;
307
308                 /* not much choice of outputs */
309                 if (*iarg != 0)
310                         return -EINVAL;
311                 break;
312         }
313
314         case ENCODER_ENABLE_OUTPUT:
315         {
316                 int *iarg = arg;
317
318                 encoder->enable = !!*iarg;
319                 saa7185_write(client, 0x61,
320                               (encoder->reg[0x61] & 0xbf) |
321                               (encoder->enable ? 0x00 : 0x40));
322                 break;
323         }
324
325         default:
326                 return -EINVAL;
327         }
328
329         return 0;
330 }
331
332 /* ----------------------------------------------------------------------- */
333
334 static unsigned short normal_i2c[] = { 0x88 >> 1, I2C_CLIENT_END };
335
336 I2C_CLIENT_INSMOD;
337
338 static int saa7185_probe(struct i2c_client *client,
339                         const struct i2c_device_id *id)
340 {
341         int i;
342         struct saa7185 *encoder;
343
344         /* Check if the adapter supports the needed features */
345         if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
346                 return -ENODEV;
347
348         v4l_info(client, "chip found @ 0x%x (%s)\n",
349                         client->addr << 1, client->adapter->name);
350
351         encoder = kzalloc(sizeof(struct saa7185), GFP_KERNEL);
352         if (encoder == NULL)
353                 return -ENOMEM;
354         encoder->norm = VIDEO_MODE_NTSC;
355         encoder->enable = 1;
356         i2c_set_clientdata(client, encoder);
357
358         i = saa7185_write_block(client, init_common, sizeof(init_common));
359         if (i >= 0)
360                 i = saa7185_write_block(client, init_ntsc, sizeof(init_ntsc));
361         if (i < 0)
362                 v4l_dbg(1, debug, client, "init error %d\n", i);
363         else
364                 v4l_dbg(1, debug, client, "revision 0x%x\n",
365                                 saa7185_read(client) >> 5);
366         return 0;
367 }
368
369 static int saa7185_remove(struct i2c_client *client)
370 {
371         struct saa7185 *encoder = i2c_get_clientdata(client);
372
373         saa7185_write(client, 0x61, (encoder->reg[0x61]) | 0x40);       /* SW: output off is active */
374         //saa7185_write(client, 0x3a, (encoder->reg[0x3a]) | 0x80); /* SW: color bar */
375
376         kfree(encoder);
377         return 0;
378 }
379
380 /* ----------------------------------------------------------------------- */
381
382 static const struct i2c_device_id saa7185_id[] = {
383         { "saa7185", 0 },
384         { }
385 };
386 MODULE_DEVICE_TABLE(i2c, saa7185_id);
387
388 static struct v4l2_i2c_driver_data v4l2_i2c_data = {
389         .name = "saa7185",
390         .driverid = I2C_DRIVERID_SAA7185B,
391         .command = saa7185_command,
392         .probe = saa7185_probe,
393         .remove = saa7185_remove,
394         .id_table = saa7185_id,
395 };