diff options
author | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
---|---|---|
committer | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
commit | fcc9d2e5a6c89d22b8b773a64fb4ad21ac318446 (patch) | |
tree | a57612d1888735a2ec7972891b68c1ac5ec8faea /drivers/media/video/adv7175.c | |
parent | 8dea78da5cee153b8af9c07a2745f6c55057fe12 (diff) |
Diffstat (limited to 'drivers/media/video/adv7175.c')
-rw-r--r-- | drivers/media/video/adv7175.c | 409 |
1 files changed, 409 insertions, 0 deletions
diff --git a/drivers/media/video/adv7175.c b/drivers/media/video/adv7175.c new file mode 100644 index 00000000000..d2327dbb473 --- /dev/null +++ b/drivers/media/video/adv7175.c | |||
@@ -0,0 +1,409 @@ | |||
1 | /* | ||
2 | * adv7175 - adv7175a video encoder driver version 0.0.3 | ||
3 | * | ||
4 | * Copyright (C) 1998 Dave Perks <dperks@ibm.net> | ||
5 | * Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net> | ||
6 | * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx> | ||
7 | * - some corrections for Pinnacle Systems Inc. DC10plus card. | ||
8 | * | ||
9 | * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net> | ||
10 | * - moved over to linux>=2.4.x i2c protocol (9/9/2002) | ||
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/videodev2.h> | ||
34 | #include <media/v4l2-device.h> | ||
35 | #include <media/v4l2-chip-ident.h> | ||
36 | |||
37 | MODULE_DESCRIPTION("Analog Devices ADV7175 video encoder driver"); | ||
38 | MODULE_AUTHOR("Dave Perks"); | ||
39 | MODULE_LICENSE("GPL"); | ||
40 | |||
41 | #define I2C_ADV7175 0xd4 | ||
42 | #define I2C_ADV7176 0x54 | ||
43 | |||
44 | |||
45 | static int debug; | ||
46 | module_param(debug, int, 0); | ||
47 | MODULE_PARM_DESC(debug, "Debug level (0-1)"); | ||
48 | |||
49 | /* ----------------------------------------------------------------------- */ | ||
50 | |||
51 | struct adv7175 { | ||
52 | struct v4l2_subdev sd; | ||
53 | v4l2_std_id norm; | ||
54 | int input; | ||
55 | }; | ||
56 | |||
57 | static inline struct adv7175 *to_adv7175(struct v4l2_subdev *sd) | ||
58 | { | ||
59 | return container_of(sd, struct adv7175, sd); | ||
60 | } | ||
61 | |||
62 | static char *inputs[] = { "pass_through", "play_back", "color_bar" }; | ||
63 | |||
64 | /* ----------------------------------------------------------------------- */ | ||
65 | |||
66 | static inline int adv7175_write(struct v4l2_subdev *sd, u8 reg, u8 value) | ||
67 | { | ||
68 | struct i2c_client *client = v4l2_get_subdevdata(sd); | ||
69 | |||
70 | return i2c_smbus_write_byte_data(client, reg, value); | ||
71 | } | ||
72 | |||
73 | static inline int adv7175_read(struct v4l2_subdev *sd, u8 reg) | ||
74 | { | ||
75 | struct i2c_client *client = v4l2_get_subdevdata(sd); | ||
76 | |||
77 | return i2c_smbus_read_byte_data(client, reg); | ||
78 | } | ||
79 | |||
80 | static int adv7175_write_block(struct v4l2_subdev *sd, | ||
81 | const u8 *data, unsigned int len) | ||
82 | { | ||
83 | struct i2c_client *client = v4l2_get_subdevdata(sd); | ||
84 | int ret = -1; | ||
85 | u8 reg; | ||
86 | |||
87 | /* the adv7175 has an autoincrement function, use it if | ||
88 | * the adapter understands raw I2C */ | ||
89 | if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { | ||
90 | /* do raw I2C, not smbus compatible */ | ||
91 | u8 block_data[32]; | ||
92 | int block_len; | ||
93 | |||
94 | while (len >= 2) { | ||
95 | block_len = 0; | ||
96 | block_data[block_len++] = reg = data[0]; | ||
97 | do { | ||
98 | block_data[block_len++] = data[1]; | ||
99 | reg++; | ||
100 | len -= 2; | ||
101 | data += 2; | ||
102 | } while (len >= 2 && data[0] == reg && block_len < 32); | ||
103 | ret = i2c_master_send(client, block_data, block_len); | ||
104 | if (ret < 0) | ||
105 | break; | ||
106 | } | ||
107 | } else { | ||
108 | /* do some slow I2C emulation kind of thing */ | ||
109 | while (len >= 2) { | ||
110 | reg = *data++; | ||
111 | ret = adv7175_write(sd, reg, *data++); | ||
112 | if (ret < 0) | ||
113 | break; | ||
114 | len -= 2; | ||
115 | } | ||
116 | } | ||
117 | |||
118 | return ret; | ||
119 | } | ||
120 | |||
121 | static void set_subcarrier_freq(struct v4l2_subdev *sd, int pass_through) | ||
122 | { | ||
123 | /* for some reason pass_through NTSC needs | ||
124 | * a different sub-carrier freq to remain stable. */ | ||
125 | if (pass_through) | ||
126 | adv7175_write(sd, 0x02, 0x00); | ||
127 | else | ||
128 | adv7175_write(sd, 0x02, 0x55); | ||
129 | |||
130 | adv7175_write(sd, 0x03, 0x55); | ||
131 | adv7175_write(sd, 0x04, 0x55); | ||
132 | adv7175_write(sd, 0x05, 0x25); | ||
133 | } | ||
134 | |||
135 | /* ----------------------------------------------------------------------- */ | ||
136 | /* Output filter: S-Video Composite */ | ||
137 | |||
138 | #define MR050 0x11 /* 0x09 */ | ||
139 | #define MR060 0x14 /* 0x0c */ | ||
140 | |||
141 | /* ----------------------------------------------------------------------- */ | ||
142 | |||
143 | #define TR0MODE 0x46 | ||
144 | #define TR0RST 0x80 | ||
145 | |||
146 | #define TR1CAPT 0x80 | ||
147 | #define TR1PLAY 0x00 | ||
148 | |||
149 | static const unsigned char init_common[] = { | ||
150 | |||
151 | 0x00, MR050, /* MR0, PAL enabled */ | ||
152 | 0x01, 0x00, /* MR1 */ | ||
153 | 0x02, 0x0c, /* subc. freq. */ | ||
154 | 0x03, 0x8c, /* subc. freq. */ | ||
155 | 0x04, 0x79, /* subc. freq. */ | ||
156 | 0x05, 0x26, /* subc. freq. */ | ||
157 | 0x06, 0x40, /* subc. phase */ | ||
158 | |||
159 | 0x07, TR0MODE, /* TR0, 16bit */ | ||
160 | 0x08, 0x21, /* */ | ||
161 | 0x09, 0x00, /* */ | ||
162 | 0x0a, 0x00, /* */ | ||
163 | 0x0b, 0x00, /* */ | ||
164 | 0x0c, TR1CAPT, /* TR1 */ | ||
165 | 0x0d, 0x4f, /* MR2 */ | ||
166 | 0x0e, 0x00, /* */ | ||
167 | 0x0f, 0x00, /* */ | ||
168 | 0x10, 0x00, /* */ | ||
169 | 0x11, 0x00, /* */ | ||
170 | }; | ||
171 | |||
172 | static const unsigned char init_pal[] = { | ||
173 | 0x00, MR050, /* MR0, PAL enabled */ | ||
174 | 0x01, 0x00, /* MR1 */ | ||
175 | 0x02, 0x0c, /* subc. freq. */ | ||
176 | 0x03, 0x8c, /* subc. freq. */ | ||
177 | 0x04, 0x79, /* subc. freq. */ | ||
178 | 0x05, 0x26, /* subc. freq. */ | ||
179 | 0x06, 0x40, /* subc. phase */ | ||
180 | }; | ||
181 | |||
182 | static const unsigned char init_ntsc[] = { | ||
183 | 0x00, MR060, /* MR0, NTSC enabled */ | ||
184 | 0x01, 0x00, /* MR1 */ | ||
185 | 0x02, 0x55, /* subc. freq. */ | ||
186 | 0x03, 0x55, /* subc. freq. */ | ||
187 | 0x04, 0x55, /* subc. freq. */ | ||
188 | 0x05, 0x25, /* subc. freq. */ | ||
189 | 0x06, 0x1a, /* subc. phase */ | ||
190 | }; | ||
191 | |||
192 | static int adv7175_init(struct v4l2_subdev *sd, u32 val) | ||
193 | { | ||
194 | /* This is just for testing!!! */ | ||
195 | adv7175_write_block(sd, init_common, sizeof(init_common)); | ||
196 | adv7175_write(sd, 0x07, TR0MODE | TR0RST); | ||
197 | adv7175_write(sd, 0x07, TR0MODE); | ||
198 | return 0; | ||
199 | } | ||
200 | |||
201 | static int adv7175_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std) | ||
202 | { | ||
203 | struct adv7175 *encoder = to_adv7175(sd); | ||
204 | |||
205 | if (std & V4L2_STD_NTSC) { | ||
206 | adv7175_write_block(sd, init_ntsc, sizeof(init_ntsc)); | ||
207 | if (encoder->input == 0) | ||
208 | adv7175_write(sd, 0x0d, 0x4f); /* Enable genlock */ | ||
209 | adv7175_write(sd, 0x07, TR0MODE | TR0RST); | ||
210 | adv7175_write(sd, 0x07, TR0MODE); | ||
211 | } else if (std & V4L2_STD_PAL) { | ||
212 | adv7175_write_block(sd, init_pal, sizeof(init_pal)); | ||
213 | if (encoder->input == 0) | ||
214 | adv7175_write(sd, 0x0d, 0x4f); /* Enable genlock */ | ||
215 | adv7175_write(sd, 0x07, TR0MODE | TR0RST); | ||
216 | adv7175_write(sd, 0x07, TR0MODE); | ||
217 | } else if (std & V4L2_STD_SECAM) { | ||
218 | /* This is an attempt to convert | ||
219 | * SECAM->PAL (typically it does not work | ||
220 | * due to genlock: when decoder is in SECAM | ||
221 | * and encoder in in PAL the subcarrier can | ||
222 | * not be syncronized with horizontal | ||
223 | * quency) */ | ||
224 | adv7175_write_block(sd, init_pal, sizeof(init_pal)); | ||
225 | if (encoder->input == 0) | ||
226 | adv7175_write(sd, 0x0d, 0x49); /* Disable genlock */ | ||
227 | adv7175_write(sd, 0x07, TR0MODE | TR0RST); | ||
228 | adv7175_write(sd, 0x07, TR0MODE); | ||
229 | } else { | ||
230 | v4l2_dbg(1, debug, sd, "illegal norm: %llx\n", | ||
231 | (unsigned long long)std); | ||
232 | return -EINVAL; | ||
233 | } | ||
234 | v4l2_dbg(1, debug, sd, "switched to %llx\n", (unsigned long long)std); | ||
235 | encoder->norm = std; | ||
236 | return 0; | ||
237 | } | ||
238 | |||
239 | static int adv7175_s_routing(struct v4l2_subdev *sd, | ||
240 | u32 input, u32 output, u32 config) | ||
241 | { | ||
242 | struct adv7175 *encoder = to_adv7175(sd); | ||
243 | |||
244 | /* RJ: input = 0: input is from decoder | ||
245 | input = 1: input is from ZR36060 | ||
246 | input = 2: color bar */ | ||
247 | |||
248 | switch (input) { | ||
249 | case 0: | ||
250 | adv7175_write(sd, 0x01, 0x00); | ||
251 | |||
252 | if (encoder->norm & V4L2_STD_NTSC) | ||
253 | set_subcarrier_freq(sd, 1); | ||
254 | |||
255 | adv7175_write(sd, 0x0c, TR1CAPT); /* TR1 */ | ||
256 | if (encoder->norm & V4L2_STD_SECAM) | ||
257 | adv7175_write(sd, 0x0d, 0x49); /* Disable genlock */ | ||
258 | else | ||
259 | adv7175_write(sd, 0x0d, 0x4f); /* Enable genlock */ | ||
260 | adv7175_write(sd, 0x07, TR0MODE | TR0RST); | ||
261 | adv7175_write(sd, 0x07, TR0MODE); | ||
262 | /*udelay(10);*/ | ||
263 | break; | ||
264 | |||
265 | case 1: | ||
266 | adv7175_write(sd, 0x01, 0x00); | ||
267 | |||
268 | if (encoder->norm & V4L2_STD_NTSC) | ||
269 | set_subcarrier_freq(sd, 0); | ||
270 | |||
271 | adv7175_write(sd, 0x0c, TR1PLAY); /* TR1 */ | ||
272 | adv7175_write(sd, 0x0d, 0x49); | ||
273 | adv7175_write(sd, 0x07, TR0MODE | TR0RST); | ||
274 | adv7175_write(sd, 0x07, TR0MODE); | ||
275 | /* udelay(10); */ | ||
276 | break; | ||
277 | |||
278 | case 2: | ||
279 | adv7175_write(sd, 0x01, 0x80); | ||
280 | |||
281 | if (encoder->norm & V4L2_STD_NTSC) | ||
282 | set_subcarrier_freq(sd, 0); | ||
283 | |||
284 | adv7175_write(sd, 0x0d, 0x49); | ||
285 | adv7175_write(sd, 0x07, TR0MODE | TR0RST); | ||
286 | adv7175_write(sd, 0x07, TR0MODE); | ||
287 | /* udelay(10); */ | ||
288 | break; | ||
289 | |||
290 | default: | ||
291 | v4l2_dbg(1, debug, sd, "illegal input: %d\n", input); | ||
292 | return -EINVAL; | ||
293 | } | ||
294 | v4l2_dbg(1, debug, sd, "switched to %s\n", inputs[input]); | ||
295 | encoder->input = input; | ||
296 | return 0; | ||
297 | } | ||
298 | |||
299 | static int adv7175_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip) | ||
300 | { | ||
301 | struct i2c_client *client = v4l2_get_subdevdata(sd); | ||
302 | |||
303 | return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7175, 0); | ||
304 | } | ||
305 | |||
306 | static int adv7175_s_power(struct v4l2_subdev *sd, int on) | ||
307 | { | ||
308 | if (on) | ||
309 | adv7175_write(sd, 0x01, 0x00); | ||
310 | else | ||
311 | adv7175_write(sd, 0x01, 0x78); | ||
312 | |||
313 | return 0; | ||
314 | } | ||
315 | |||
316 | /* ----------------------------------------------------------------------- */ | ||
317 | |||
318 | static const struct v4l2_subdev_core_ops adv7175_core_ops = { | ||
319 | .g_chip_ident = adv7175_g_chip_ident, | ||
320 | .init = adv7175_init, | ||
321 | .s_power = adv7175_s_power, | ||
322 | }; | ||
323 | |||
324 | static const struct v4l2_subdev_video_ops adv7175_video_ops = { | ||
325 | .s_std_output = adv7175_s_std_output, | ||
326 | .s_routing = adv7175_s_routing, | ||
327 | }; | ||
328 | |||
329 | static const struct v4l2_subdev_ops adv7175_ops = { | ||
330 | .core = &adv7175_core_ops, | ||
331 | .video = &adv7175_video_ops, | ||
332 | }; | ||
333 | |||
334 | /* ----------------------------------------------------------------------- */ | ||
335 | |||
336 | static int adv7175_probe(struct i2c_client *client, | ||
337 | const struct i2c_device_id *id) | ||
338 | { | ||
339 | int i; | ||
340 | struct adv7175 *encoder; | ||
341 | struct v4l2_subdev *sd; | ||
342 | |||
343 | /* Check if the adapter supports the needed features */ | ||
344 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | ||
345 | return -ENODEV; | ||
346 | |||
347 | v4l_info(client, "chip found @ 0x%x (%s)\n", | ||
348 | client->addr << 1, client->adapter->name); | ||
349 | |||
350 | encoder = kzalloc(sizeof(struct adv7175), GFP_KERNEL); | ||
351 | if (encoder == NULL) | ||
352 | return -ENOMEM; | ||
353 | sd = &encoder->sd; | ||
354 | v4l2_i2c_subdev_init(sd, client, &adv7175_ops); | ||
355 | encoder->norm = V4L2_STD_NTSC; | ||
356 | encoder->input = 0; | ||
357 | |||
358 | i = adv7175_write_block(sd, init_common, sizeof(init_common)); | ||
359 | if (i >= 0) { | ||
360 | i = adv7175_write(sd, 0x07, TR0MODE | TR0RST); | ||
361 | i = adv7175_write(sd, 0x07, TR0MODE); | ||
362 | i = adv7175_read(sd, 0x12); | ||
363 | v4l2_dbg(1, debug, sd, "revision %d\n", i & 1); | ||
364 | } | ||
365 | if (i < 0) | ||
366 | v4l2_dbg(1, debug, sd, "init error 0x%x\n", i); | ||
367 | return 0; | ||
368 | } | ||
369 | |||
370 | static int adv7175_remove(struct i2c_client *client) | ||
371 | { | ||
372 | struct v4l2_subdev *sd = i2c_get_clientdata(client); | ||
373 | |||
374 | v4l2_device_unregister_subdev(sd); | ||
375 | kfree(to_adv7175(sd)); | ||
376 | return 0; | ||
377 | } | ||
378 | |||
379 | /* ----------------------------------------------------------------------- */ | ||
380 | |||
381 | static const struct i2c_device_id adv7175_id[] = { | ||
382 | { "adv7175", 0 }, | ||
383 | { "adv7176", 0 }, | ||
384 | { } | ||
385 | }; | ||
386 | MODULE_DEVICE_TABLE(i2c, adv7175_id); | ||
387 | |||
388 | static struct i2c_driver adv7175_driver = { | ||
389 | .driver = { | ||
390 | .owner = THIS_MODULE, | ||
391 | .name = "adv7175", | ||
392 | }, | ||
393 | .probe = adv7175_probe, | ||
394 | .remove = adv7175_remove, | ||
395 | .id_table = adv7175_id, | ||
396 | }; | ||
397 | |||
398 | static __init int init_adv7175(void) | ||
399 | { | ||
400 | return i2c_add_driver(&adv7175_driver); | ||
401 | } | ||
402 | |||
403 | static __exit void exit_adv7175(void) | ||
404 | { | ||
405 | i2c_del_driver(&adv7175_driver); | ||
406 | } | ||
407 | |||
408 | module_init(init_adv7175); | ||
409 | module_exit(exit_adv7175); | ||