V4L/DVB (10388): gspca - pac207: Webcam 093a:2474 added.
[linux-2.6] / drivers / media / video / adv7170.c
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/ioctl.h>
34 #include <asm/uaccess.h>
35 #include <linux/i2c.h>
36 #include <linux/i2c-id.h>
37 #include <linux/videodev.h>
38 #include <linux/video_encoder.h>
39 #include <media/v4l2-common.h>
40 #include <media/v4l2-i2c-drv-legacy.h>
41
42 MODULE_DESCRIPTION("Analog Devices ADV7170 video encoder driver");
43 MODULE_AUTHOR("Maxim Yevtyushkin");
44 MODULE_LICENSE("GPL");
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         unsigned char reg[128];
54
55         int norm;
56         int input;
57         int enable;
58         int bright;
59         int contrast;
60         int hue;
61         int sat;
62 };
63
64 static char *inputs[] = { "pass_through", "play_back" };
65 static char *norms[] = { "PAL", "NTSC" };
66
67 /* ----------------------------------------------------------------------- */
68
69 static inline int adv7170_write(struct i2c_client *client, u8 reg, u8 value)
70 {
71         struct adv7170 *encoder = i2c_get_clientdata(client);
72
73         encoder->reg[reg] = value;
74         return i2c_smbus_write_byte_data(client, reg, value);
75 }
76
77 static inline int adv7170_read(struct i2c_client *client, u8 reg)
78 {
79         return i2c_smbus_read_byte_data(client, reg);
80 }
81
82 static int adv7170_write_block(struct i2c_client *client,
83                      const u8 *data, unsigned int len)
84 {
85         int ret = -1;
86         u8 reg;
87
88         /* the adv7170 has an autoincrement function, use it if
89          * the adapter understands raw I2C */
90         if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
91                 /* do raw I2C, not smbus compatible */
92                 struct adv7170 *encoder = i2c_get_clientdata(client);
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 = adv7170_write(client, reg, *data++);
114                         if (ret < 0)
115                                 break;
116                         len -= 2;
117                 }
118         }
119         return ret;
120 }
121
122 /* ----------------------------------------------------------------------- */
123
124 #define TR0MODE     0x4c
125 #define TR0RST      0x80
126
127 #define TR1CAPT     0x00
128 #define TR1PLAY     0x00
129
130 static const unsigned char init_NTSC[] = {
131         0x00, 0x10,             // MR0
132         0x01, 0x20,             // MR1
133         0x02, 0x0e,             // MR2 RTC control: bits 2 and 1
134         0x03, 0x80,             // MR3
135         0x04, 0x30,             // MR4
136         0x05, 0x00,             // Reserved
137         0x06, 0x00,             // Reserved
138         0x07, TR0MODE,          // TM0
139         0x08, TR1CAPT,          // TM1
140         0x09, 0x16,             // Fsc0
141         0x0a, 0x7c,             // Fsc1
142         0x0b, 0xf0,             // Fsc2
143         0x0c, 0x21,             // Fsc3
144         0x0d, 0x00,             // Subcarrier Phase
145         0x0e, 0x00,             // Closed Capt. Ext 0
146         0x0f, 0x00,             // Closed Capt. Ext 1
147         0x10, 0x00,             // Closed Capt. 0
148         0x11, 0x00,             // Closed Capt. 1
149         0x12, 0x00,             // Pedestal Ctl 0
150         0x13, 0x00,             // Pedestal Ctl 1
151         0x14, 0x00,             // Pedestal Ctl 2
152         0x15, 0x00,             // Pedestal Ctl 3
153         0x16, 0x00,             // CGMS_WSS_0
154         0x17, 0x00,             // CGMS_WSS_1
155         0x18, 0x00,             // CGMS_WSS_2
156         0x19, 0x00,             // Teletext Ctl
157 };
158
159 static const unsigned char init_PAL[] = {
160         0x00, 0x71,             // MR0
161         0x01, 0x20,             // MR1
162         0x02, 0x0e,             // MR2 RTC control: bits 2 and 1
163         0x03, 0x80,             // MR3
164         0x04, 0x30,             // MR4
165         0x05, 0x00,             // Reserved
166         0x06, 0x00,             // Reserved
167         0x07, TR0MODE,          // TM0
168         0x08, TR1CAPT,          // TM1
169         0x09, 0xcb,             // Fsc0
170         0x0a, 0x8a,             // Fsc1
171         0x0b, 0x09,             // Fsc2
172         0x0c, 0x2a,             // Fsc3
173         0x0d, 0x00,             // Subcarrier Phase
174         0x0e, 0x00,             // Closed Capt. Ext 0
175         0x0f, 0x00,             // Closed Capt. Ext 1
176         0x10, 0x00,             // Closed Capt. 0
177         0x11, 0x00,             // Closed Capt. 1
178         0x12, 0x00,             // Pedestal Ctl 0
179         0x13, 0x00,             // Pedestal Ctl 1
180         0x14, 0x00,             // Pedestal Ctl 2
181         0x15, 0x00,             // Pedestal Ctl 3
182         0x16, 0x00,             // CGMS_WSS_0
183         0x17, 0x00,             // CGMS_WSS_1
184         0x18, 0x00,             // CGMS_WSS_2
185         0x19, 0x00,             // Teletext Ctl
186 };
187
188
189 static int adv7170_command(struct i2c_client *client, unsigned cmd, void *arg)
190 {
191         struct adv7170 *encoder = i2c_get_clientdata(client);
192
193         switch (cmd) {
194         case 0:
195 #if 0
196                 /* This is just for testing!!! */
197                 adv7170_write_block(client, init_common,
198                                     sizeof(init_common));
199                 adv7170_write(client, 0x07, TR0MODE | TR0RST);
200                 adv7170_write(client, 0x07, TR0MODE);
201 #endif
202                 break;
203
204         case ENCODER_GET_CAPABILITIES:
205         {
206                 struct video_encoder_capability *cap = arg;
207
208                 cap->flags = VIDEO_ENCODER_PAL |
209                              VIDEO_ENCODER_NTSC;
210                 cap->inputs = 2;
211                 cap->outputs = 1;
212                 break;
213         }
214
215         case ENCODER_SET_NORM:
216         {
217                 int iarg = *(int *) arg;
218
219                 v4l_dbg(1, debug, client, "set norm %d\n", iarg);
220
221                 switch (iarg) {
222                 case VIDEO_MODE_NTSC:
223                         adv7170_write_block(client, init_NTSC,
224                                             sizeof(init_NTSC));
225                         if (encoder->input == 0)
226                                 adv7170_write(client, 0x02, 0x0e);      // Enable genlock
227                         adv7170_write(client, 0x07, TR0MODE | TR0RST);
228                         adv7170_write(client, 0x07, TR0MODE);
229                         break;
230
231                 case VIDEO_MODE_PAL:
232                         adv7170_write_block(client, init_PAL,
233                                             sizeof(init_PAL));
234                         if (encoder->input == 0)
235                                 adv7170_write(client, 0x02, 0x0e);      // Enable genlock
236                         adv7170_write(client, 0x07, TR0MODE | TR0RST);
237                         adv7170_write(client, 0x07, TR0MODE);
238                         break;
239
240                 default:
241                         v4l_dbg(1, debug, client, "illegal norm: %d\n", iarg);
242                         return -EINVAL;
243                 }
244                 v4l_dbg(1, debug, client, "switched to %s\n", norms[iarg]);
245                 encoder->norm = iarg;
246                 break;
247         }
248
249         case ENCODER_SET_INPUT:
250         {
251                 int iarg = *(int *) arg;
252
253                 /* RJ: *iarg = 0: input is from decoder
254                  *iarg = 1: input is from ZR36060
255                  *iarg = 2: color bar */
256
257                 v4l_dbg(1, debug, client, "set input from %s\n",
258                         iarg == 0 ? "decoder" : "ZR36060");
259
260                 switch (iarg) {
261                 case 0:
262                         adv7170_write(client, 0x01, 0x20);
263                         adv7170_write(client, 0x08, TR1CAPT);   /* TR1 */
264                         adv7170_write(client, 0x02, 0x0e);      // Enable genlock
265                         adv7170_write(client, 0x07, TR0MODE | TR0RST);
266                         adv7170_write(client, 0x07, TR0MODE);
267                         /* udelay(10); */
268                         break;
269
270                 case 1:
271                         adv7170_write(client, 0x01, 0x00);
272                         adv7170_write(client, 0x08, TR1PLAY);   /* TR1 */
273                         adv7170_write(client, 0x02, 0x08);
274                         adv7170_write(client, 0x07, TR0MODE | TR0RST);
275                         adv7170_write(client, 0x07, TR0MODE);
276                         /* udelay(10); */
277                         break;
278
279                 default:
280                         v4l_dbg(1, debug, client, "illegal input: %d\n", iarg);
281                         return -EINVAL;
282                 }
283                 v4l_dbg(1, debug, client, "switched to %s\n", inputs[iarg]);
284                 encoder->input = iarg;
285                 break;
286         }
287
288         case ENCODER_SET_OUTPUT:
289         {
290                 int *iarg = arg;
291
292                 /* not much choice of outputs */
293                 if (*iarg != 0) {
294                         return -EINVAL;
295                 }
296                 break;
297         }
298
299         case ENCODER_ENABLE_OUTPUT:
300         {
301                 int *iarg = arg;
302
303                 encoder->enable = !!*iarg;
304                 break;
305         }
306
307         default:
308                 return -EINVAL;
309         }
310
311         return 0;
312 }
313
314 /* ----------------------------------------------------------------------- */
315
316 static unsigned short normal_i2c[] = {
317         0xd4 >> 1, 0xd6 >> 1,   /* adv7170 IDs */
318         0x54 >> 1, 0x56 >> 1,   /* adv7171 IDs */
319         I2C_CLIENT_END
320 };
321
322 I2C_CLIENT_INSMOD;
323
324 static int adv7170_probe(struct i2c_client *client,
325                         const struct i2c_device_id *id)
326 {
327         struct adv7170 *encoder;
328         int i;
329
330         /* Check if the adapter supports the needed features */
331         if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
332                 return -ENODEV;
333
334         v4l_info(client, "chip found @ 0x%x (%s)\n",
335                         client->addr << 1, client->adapter->name);
336
337         encoder = kzalloc(sizeof(struct adv7170), GFP_KERNEL);
338         if (encoder == NULL)
339                 return -ENOMEM;
340         encoder->norm = VIDEO_MODE_NTSC;
341         encoder->input = 0;
342         encoder->enable = 1;
343         i2c_set_clientdata(client, encoder);
344
345         i = adv7170_write_block(client, init_NTSC, sizeof(init_NTSC));
346         if (i >= 0) {
347                 i = adv7170_write(client, 0x07, TR0MODE | TR0RST);
348                 i = adv7170_write(client, 0x07, TR0MODE);
349                 i = adv7170_read(client, 0x12);
350                 v4l_dbg(1, debug, client, "revision %d\n", i & 1);
351         }
352         if (i < 0)
353                 v4l_dbg(1, debug, client, "init error 0x%x\n", i);
354         return 0;
355 }
356
357 static int adv7170_remove(struct i2c_client *client)
358 {
359         kfree(i2c_get_clientdata(client));
360         return 0;
361 }
362
363 /* ----------------------------------------------------------------------- */
364
365 static const struct i2c_device_id adv7170_id[] = {
366         { "adv7170", 0 },
367         { "adv7171", 0 },
368         { }
369 };
370 MODULE_DEVICE_TABLE(i2c, adv7170_id);
371
372 static struct v4l2_i2c_driver_data v4l2_i2c_data = {
373         .name = "adv7170",
374         .driverid = I2C_DRIVERID_ADV7170,
375         .command = adv7170_command,
376         .probe = adv7170_probe,
377         .remove = adv7170_remove,
378         .id_table = adv7170_id,
379 };