Merge branch 'iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip...
[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/videodev2.h>
34 #include <media/v4l2-device.h>
35 #include <media/v4l2-chip-ident.h>
36 #include <media/v4l2-i2c-drv.h>
37
38 MODULE_DESCRIPTION("Philips SAA7185 video encoder driver");
39 MODULE_AUTHOR("Dave Perks");
40 MODULE_LICENSE("GPL");
41
42 static int debug;
43 module_param(debug, int, 0);
44 MODULE_PARM_DESC(debug, "Debug level (0-1)");
45
46
47 /* ----------------------------------------------------------------------- */
48
49 struct saa7185 {
50         struct v4l2_subdev sd;
51         unsigned char reg[128];
52
53         v4l2_std_id norm;
54 };
55
56 static inline struct saa7185 *to_saa7185(struct v4l2_subdev *sd)
57 {
58         return container_of(sd, struct saa7185, sd);
59 }
60
61 /* ----------------------------------------------------------------------- */
62
63 static inline int saa7185_read(struct v4l2_subdev *sd)
64 {
65         struct i2c_client *client = v4l2_get_subdevdata(sd);
66
67         return i2c_smbus_read_byte(client);
68 }
69
70 static int saa7185_write(struct v4l2_subdev *sd, u8 reg, u8 value)
71 {
72         struct i2c_client *client = v4l2_get_subdevdata(sd);
73         struct saa7185 *encoder = to_saa7185(sd);
74
75         v4l2_dbg(1, debug, sd, "%02x set to %02x\n", reg, value);
76         encoder->reg[reg] = value;
77         return i2c_smbus_write_byte_data(client, reg, value);
78 }
79
80 static int saa7185_write_block(struct v4l2_subdev *sd,
81                 const u8 *data, unsigned int len)
82 {
83         struct i2c_client *client = v4l2_get_subdevdata(sd);
84         struct saa7185 *encoder = to_saa7185(sd);
85         int ret = -1;
86         u8 reg;
87
88         /* the adv7175 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                 u8 block_data[32];
93                 int block_len;
94
95                 while (len >= 2) {
96                         block_len = 0;
97                         block_data[block_len++] = reg = data[0];
98                         do {
99                                 block_data[block_len++] =
100                                     encoder->reg[reg++] = data[1];
101                                 len -= 2;
102                                 data += 2;
103                         } while (len >= 2 && data[0] == reg && block_len < 32);
104                         ret = i2c_master_send(client, block_data, block_len);
105                         if (ret < 0)
106                                 break;
107                 }
108         } else {
109                 /* do some slow I2C emulation kind of thing */
110                 while (len >= 2) {
111                         reg = *data++;
112                         ret = saa7185_write(sd, reg, *data++);
113                         if (ret < 0)
114                                 break;
115                         len -= 2;
116                 }
117         }
118
119         return ret;
120 }
121
122 /* ----------------------------------------------------------------------- */
123
124 static const unsigned char init_common[] = {
125         0x3a, 0x0f,             /* CBENB=0, V656=0, VY2C=1,
126                                  * YUV2C=1, MY2C=1, MUV2C=1 */
127
128         0x42, 0x6b,             /* OVLY0=107 */
129         0x43, 0x00,             /* OVLU0=0     white */
130         0x44, 0x00,             /* OVLV0=0   */
131         0x45, 0x22,             /* OVLY1=34  */
132         0x46, 0xac,             /* OVLU1=172   yellow */
133         0x47, 0x0e,             /* OVLV1=14  */
134         0x48, 0x03,             /* OVLY2=3   */
135         0x49, 0x1d,             /* OVLU2=29    cyan */
136         0x4a, 0xac,             /* OVLV2=172 */
137         0x4b, 0xf0,             /* OVLY3=240 */
138         0x4c, 0xc8,             /* OVLU3=200   green */
139         0x4d, 0xb9,             /* OVLV3=185 */
140         0x4e, 0xd4,             /* OVLY4=212 */
141         0x4f, 0x38,             /* OVLU4=56    magenta */
142         0x50, 0x47,             /* OVLV4=71  */
143         0x51, 0xc1,             /* OVLY5=193 */
144         0x52, 0xe3,             /* OVLU5=227   red */
145         0x53, 0x54,             /* OVLV5=84  */
146         0x54, 0xa3,             /* OVLY6=163 */
147         0x55, 0x54,             /* OVLU6=84    blue */
148         0x56, 0xf2,             /* OVLV6=242 */
149         0x57, 0x90,             /* OVLY7=144 */
150         0x58, 0x00,             /* OVLU7=0     black */
151         0x59, 0x00,             /* OVLV7=0   */
152
153         0x5a, 0x00,             /* CHPS=0    */
154         0x5b, 0x76,             /* GAINU=118 */
155         0x5c, 0xa5,             /* GAINV=165 */
156         0x5d, 0x3c,             /* BLCKL=60  */
157         0x5e, 0x3a,             /* BLNNL=58  */
158         0x5f, 0x3a,             /* CCRS=0, BLNVB=58 */
159         0x60, 0x00,             /* NULL      */
160
161         /* 0x61 - 0x66 set according to norm */
162
163         0x67, 0x00,             /* 0 : caption 1st byte odd  field */
164         0x68, 0x00,             /* 0 : caption 2nd byte odd  field */
165         0x69, 0x00,             /* 0 : caption 1st byte even field */
166         0x6a, 0x00,             /* 0 : caption 2nd byte even field */
167
168         0x6b, 0x91,             /* MODIN=2, PCREF=0, SCCLN=17 */
169         0x6c, 0x20,             /* SRCV1=0, TRCV2=1, ORCV1=0, PRCV1=0,
170                                  * CBLF=0, ORCV2=0, PRCV2=0 */
171         0x6d, 0x00,             /* SRCM1=0, CCEN=0 */
172
173         0x6e, 0x0e,             /* HTRIG=0x005, approx. centered, at
174                                  * least for PAL */
175         0x6f, 0x00,             /* HTRIG upper bits */
176         0x70, 0x20,             /* PHRES=0, SBLN=1, VTRIG=0 */
177
178         /* The following should not be needed */
179
180         0x71, 0x15,             /* BMRQ=0x115 */
181         0x72, 0x90,             /* EMRQ=0x690 */
182         0x73, 0x61,             /* EMRQ=0x690, BMRQ=0x115 */
183         0x74, 0x00,             /* NULL       */
184         0x75, 0x00,             /* NULL       */
185         0x76, 0x00,             /* NULL       */
186         0x77, 0x15,             /* BRCV=0x115 */
187         0x78, 0x90,             /* ERCV=0x690 */
188         0x79, 0x61,             /* ERCV=0x690, BRCV=0x115 */
189
190         /* Field length controls */
191
192         0x7a, 0x70,             /* FLC=0 */
193
194         /* The following should not be needed if SBLN = 1 */
195
196         0x7b, 0x16,             /* FAL=22 */
197         0x7c, 0x35,             /* LAL=244 */
198         0x7d, 0x20,             /* LAL=244, FAL=22 */
199 };
200
201 static const unsigned char init_pal[] = {
202         0x61, 0x1e,             /* FISE=0, PAL=1, SCBW=1, RTCE=1,
203                                  * YGS=1, INPI=0, DOWN=0 */
204         0x62, 0xc8,             /* DECTYP=1, BSTA=72 */
205         0x63, 0xcb,             /* FSC0 */
206         0x64, 0x8a,             /* FSC1 */
207         0x65, 0x09,             /* FSC2 */
208         0x66, 0x2a,             /* FSC3 */
209 };
210
211 static const unsigned char init_ntsc[] = {
212         0x61, 0x1d,             /* FISE=1, PAL=0, SCBW=1, RTCE=1,
213                                  * YGS=1, INPI=0, DOWN=0 */
214         0x62, 0xe6,             /* DECTYP=1, BSTA=102 */
215         0x63, 0x1f,             /* FSC0 */
216         0x64, 0x7c,             /* FSC1 */
217         0x65, 0xf0,             /* FSC2 */
218         0x66, 0x21,             /* FSC3 */
219 };
220
221
222 static int saa7185_init(struct v4l2_subdev *sd, u32 val)
223 {
224         struct saa7185 *encoder = to_saa7185(sd);
225
226         saa7185_write_block(sd, init_common, sizeof(init_common));
227         if (encoder->norm & V4L2_STD_NTSC)
228                 saa7185_write_block(sd, init_ntsc, sizeof(init_ntsc));
229         else
230                 saa7185_write_block(sd, init_pal, sizeof(init_pal));
231         return 0;
232 }
233
234 static int saa7185_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
235 {
236         struct saa7185 *encoder = to_saa7185(sd);
237
238         if (std & V4L2_STD_NTSC)
239                 saa7185_write_block(sd, init_ntsc, sizeof(init_ntsc));
240         else if (std & V4L2_STD_PAL)
241                 saa7185_write_block(sd, init_pal, sizeof(init_pal));
242         else
243                 return -EINVAL;
244         encoder->norm = std;
245         return 0;
246 }
247
248 static int saa7185_s_routing(struct v4l2_subdev *sd, const struct v4l2_routing *route)
249 {
250         struct saa7185 *encoder = to_saa7185(sd);
251
252         /* RJ: route->input = 0: input is from SA7111
253          route->input = 1: input is from ZR36060 */
254
255         switch (route->input) {
256         case 0:
257                 /* turn off colorbar */
258                 saa7185_write(sd, 0x3a, 0x0f);
259                 /* Switch RTCE to 1 */
260                 saa7185_write(sd, 0x61, (encoder->reg[0x61] & 0xf7) | 0x08);
261                 saa7185_write(sd, 0x6e, 0x01);
262                 break;
263
264         case 1:
265                 /* turn off colorbar */
266                 saa7185_write(sd, 0x3a, 0x0f);
267                 /* Switch RTCE to 0 */
268                 saa7185_write(sd, 0x61, (encoder->reg[0x61] & 0xf7) | 0x00);
269                 /* SW: a slight sync problem... */
270                 saa7185_write(sd, 0x6e, 0x00);
271                 break;
272
273         case 2:
274                 /* turn on colorbar */
275                 saa7185_write(sd, 0x3a, 0x8f);
276                 /* Switch RTCE to 0 */
277                 saa7185_write(sd, 0x61, (encoder->reg[0x61] & 0xf7) | 0x08);
278                 /* SW: a slight sync problem... */
279                 saa7185_write(sd, 0x6e, 0x01);
280                 break;
281
282         default:
283                 return -EINVAL;
284         }
285         return 0;
286 }
287
288 static int saa7185_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
289 {
290         struct i2c_client *client = v4l2_get_subdevdata(sd);
291
292         return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_SAA7185, 0);
293 }
294
295 /* ----------------------------------------------------------------------- */
296
297 static const struct v4l2_subdev_core_ops saa7185_core_ops = {
298         .g_chip_ident = saa7185_g_chip_ident,
299         .init = saa7185_init,
300 };
301
302 static const struct v4l2_subdev_video_ops saa7185_video_ops = {
303         .s_std_output = saa7185_s_std_output,
304         .s_routing = saa7185_s_routing,
305 };
306
307 static const struct v4l2_subdev_ops saa7185_ops = {
308         .core = &saa7185_core_ops,
309         .video = &saa7185_video_ops,
310 };
311
312
313 /* ----------------------------------------------------------------------- */
314
315 static int saa7185_probe(struct i2c_client *client,
316                         const struct i2c_device_id *id)
317 {
318         int i;
319         struct saa7185 *encoder;
320         struct v4l2_subdev *sd;
321
322         /* Check if the adapter supports the needed features */
323         if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
324                 return -ENODEV;
325
326         v4l_info(client, "chip found @ 0x%x (%s)\n",
327                         client->addr << 1, client->adapter->name);
328
329         encoder = kzalloc(sizeof(struct saa7185), GFP_KERNEL);
330         if (encoder == NULL)
331                 return -ENOMEM;
332         encoder->norm = V4L2_STD_NTSC;
333         sd = &encoder->sd;
334         v4l2_i2c_subdev_init(sd, client, &saa7185_ops);
335
336         i = saa7185_write_block(sd, init_common, sizeof(init_common));
337         if (i >= 0)
338                 i = saa7185_write_block(sd, init_ntsc, sizeof(init_ntsc));
339         if (i < 0)
340                 v4l2_dbg(1, debug, sd, "init error %d\n", i);
341         else
342                 v4l2_dbg(1, debug, sd, "revision 0x%x\n",
343                                 saa7185_read(sd) >> 5);
344         return 0;
345 }
346
347 static int saa7185_remove(struct i2c_client *client)
348 {
349         struct v4l2_subdev *sd = i2c_get_clientdata(client);
350         struct saa7185 *encoder = to_saa7185(sd);
351
352         v4l2_device_unregister_subdev(sd);
353         /* SW: output off is active */
354         saa7185_write(sd, 0x61, (encoder->reg[0x61]) | 0x40);
355         kfree(encoder);
356         return 0;
357 }
358
359 /* ----------------------------------------------------------------------- */
360
361 static const struct i2c_device_id saa7185_id[] = {
362         { "saa7185", 0 },
363         { }
364 };
365 MODULE_DEVICE_TABLE(i2c, saa7185_id);
366
367 static struct v4l2_i2c_driver_data v4l2_i2c_data = {
368         .name = "saa7185",
369         .probe = saa7185_probe,
370         .remove = saa7185_remove,
371         .id_table = saa7185_id,
372 };