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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[cris-mirror.git] / drivers / media / i2c / saa7110.c
blob63fe521752a171c530548a46d2e0d3da0fd26a1a
1 /*
2 * saa7110 - Philips SAA7110(A) video decoder driver
3 *
4 * Copyright (C) 1998 Pauline Middelink <middelin@polyware.nl>
5 *
6 * Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net>
7 * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
8 * - some corrections for Pinnacle Systems Inc. DC10plus card.
9 *
10 * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
11 * - moved over to linux>=2.4.x i2c protocol (1/1/2003)
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 */
23
24 #include <linux/module.h>
25 #include <linux/init.h>
26 #include <linux/types.h>
27 #include <linux/delay.h>
28 #include <linux/slab.h>
29 #include <linux/wait.h>
30 #include <linux/uaccess.h>
31 #include <linux/i2c.h>
32 #include <linux/videodev2.h>
33 #include <media/v4l2-device.h>
34 #include <media/v4l2-ctrls.h>
35
36 MODULE_DESCRIPTION("Philips SAA7110 video decoder driver");
37 MODULE_AUTHOR("Pauline Middelink");
38 MODULE_LICENSE("GPL");
39
40
41 static int debug;
42 module_param(debug, int, 0);
43 MODULE_PARM_DESC(debug, "Debug level (0-1)");
44
45 #define SAA7110_MAX_INPUT 9 /* 6 CVBS, 3 SVHS */
46 #define SAA7110_MAX_OUTPUT 1 /* 1 YUV */
47
48 #define SAA7110_NR_REG 0x35
49
50 struct saa7110 {
51 struct v4l2_subdev sd;
52 struct v4l2_ctrl_handler hdl;
53 u8 reg[SAA7110_NR_REG];
54
55 v4l2_std_id norm;
56 int input;
57 int enable;
58
59 wait_queue_head_t wq;
60 };
61
62 static inline struct saa7110 *to_saa7110(struct v4l2_subdev *sd)
63 {
64 return container_of(sd, struct saa7110, sd);
65 }
66
67 static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
68 {
69 return &container_of(ctrl->handler, struct saa7110, hdl)->sd;
70 }
71
72 /* ----------------------------------------------------------------------- */
73 /* I2C support functions */
74 /* ----------------------------------------------------------------------- */
75
76 static int saa7110_write(struct v4l2_subdev *sd, u8 reg, u8 value)
77 {
78 struct i2c_client *client = v4l2_get_subdevdata(sd);
79 struct saa7110 *decoder = to_saa7110(sd);
80
81 decoder->reg[reg] = value;
82 return i2c_smbus_write_byte_data(client, reg, value);
83 }
84
85 static int saa7110_write_block(struct v4l2_subdev *sd, const u8 *data, unsigned int len)
86 {
87 struct i2c_client *client = v4l2_get_subdevdata(sd);
88 struct saa7110 *decoder = to_saa7110(sd);
89 int ret = -1;
90 u8 reg = *data; /* first register to write to */
91
92 /* Sanity check */
93 if (reg + (len - 1) > SAA7110_NR_REG)
94 return ret;
95
96 /* the saa7110 has an autoincrement function, use it if
97 * the adapter understands raw I2C */
98 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
99 ret = i2c_master_send(client, data, len);
100
101 /* Cache the written data */
102 memcpy(decoder->reg + reg, data + 1, len - 1);
103 } else {
104 for (++data, --len; len; len--) {
105 ret = saa7110_write(sd, reg++, *data++);
106 if (ret < 0)
107 break;
108 }
109 }
110
111 return ret;
112 }
113
114 static inline int saa7110_read(struct v4l2_subdev *sd)
115 {
116 struct i2c_client *client = v4l2_get_subdevdata(sd);
117
118 return i2c_smbus_read_byte(client);
119 }
120
121 /* ----------------------------------------------------------------------- */
122 /* SAA7110 functions */
123 /* ----------------------------------------------------------------------- */
124
125 #define FRESP_06H_COMPST 0x03 /*0x13*/
126 #define FRESP_06H_SVIDEO 0x83 /*0xC0*/
127
128
129 static int saa7110_selmux(struct v4l2_subdev *sd, int chan)
130 {
131 static const unsigned char modes[9][8] = {
132 /* mode 0 */
133 {FRESP_06H_COMPST, 0xD9, 0x17, 0x40, 0x03,
134 0x44, 0x75, 0x16},
135 /* mode 1 */
136 {FRESP_06H_COMPST, 0xD8, 0x17, 0x40, 0x03,
137 0x44, 0x75, 0x16},
138 /* mode 2 */
139 {FRESP_06H_COMPST, 0xBA, 0x07, 0x91, 0x03,
140 0x60, 0xB5, 0x05},
141 /* mode 3 */
142 {FRESP_06H_COMPST, 0xB8, 0x07, 0x91, 0x03,
143 0x60, 0xB5, 0x05},
144 /* mode 4 */
145 {FRESP_06H_COMPST, 0x7C, 0x07, 0xD2, 0x83,
146 0x60, 0xB5, 0x03},
147 /* mode 5 */
148 {FRESP_06H_COMPST, 0x78, 0x07, 0xD2, 0x83,
149 0x60, 0xB5, 0x03},
150 /* mode 6 */
151 {FRESP_06H_SVIDEO, 0x59, 0x17, 0x42, 0xA3,
152 0x44, 0x75, 0x12},
153 /* mode 7 */
154 {FRESP_06H_SVIDEO, 0x9A, 0x17, 0xB1, 0x13,
155 0x60, 0xB5, 0x14},
156 /* mode 8 */
157 {FRESP_06H_SVIDEO, 0x3C, 0x27, 0xC1, 0x23,
158 0x44, 0x75, 0x21}
159 };
160 struct saa7110 *decoder = to_saa7110(sd);
161 const unsigned char *ptr = modes[chan];
162
163 saa7110_write(sd, 0x06, ptr[0]); /* Luminance control */
164 saa7110_write(sd, 0x20, ptr[1]); /* Analog Control #1 */
165 saa7110_write(sd, 0x21, ptr[2]); /* Analog Control #2 */
166 saa7110_write(sd, 0x22, ptr[3]); /* Mixer Control #1 */
167 saa7110_write(sd, 0x2C, ptr[4]); /* Mixer Control #2 */
168 saa7110_write(sd, 0x30, ptr[5]); /* ADCs gain control */
169 saa7110_write(sd, 0x31, ptr[6]); /* Mixer Control #3 */
170 saa7110_write(sd, 0x21, ptr[7]); /* Analog Control #2 */
171 decoder->input = chan;
172
173 return 0;
174 }
175
176 static const unsigned char initseq[1 + SAA7110_NR_REG] = {
177 0, 0x4C, 0x3C, 0x0D, 0xEF, 0xBD, 0xF2, 0x03, 0x00,
178 /* 0x08 */ 0xF8, 0xF8, 0x60, 0x60, 0x00, 0x86, 0x18, 0x90,
179 /* 0x10 */ 0x00, 0x59, 0x40, 0x46, 0x42, 0x1A, 0xFF, 0xDA,
180 /* 0x18 */ 0xF2, 0x8B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
181 /* 0x20 */ 0xD9, 0x16, 0x40, 0x41, 0x80, 0x41, 0x80, 0x4F,
182 /* 0x28 */ 0xFE, 0x01, 0xCF, 0x0F, 0x03, 0x01, 0x03, 0x0C,
183 /* 0x30 */ 0x44, 0x71, 0x02, 0x8C, 0x02
184 };
185
186 static v4l2_std_id determine_norm(struct v4l2_subdev *sd)
187 {
188 DEFINE_WAIT(wait);
189 struct saa7110 *decoder = to_saa7110(sd);
190 int status;
191
192 /* mode changed, start automatic detection */
193 saa7110_write_block(sd, initseq, sizeof(initseq));
194 saa7110_selmux(sd, decoder->input);
195 prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE);
196 schedule_timeout(msecs_to_jiffies(250));
197 finish_wait(&decoder->wq, &wait);
198 status = saa7110_read(sd);
199 if (status & 0x40) {
200 v4l2_dbg(1, debug, sd, "status=0x%02x (no signal)\n", status);
201 return V4L2_STD_UNKNOWN;
202 }
203 if ((status & 3) == 0) {
204 saa7110_write(sd, 0x06, 0x83);
205 if (status & 0x20) {
206 v4l2_dbg(1, debug, sd, "status=0x%02x (NTSC/no color)\n", status);
207 /*saa7110_write(sd,0x2E,0x81);*/
208 return V4L2_STD_NTSC;
209 }
210 v4l2_dbg(1, debug, sd, "status=0x%02x (PAL/no color)\n", status);
211 /*saa7110_write(sd,0x2E,0x9A);*/
212 return V4L2_STD_PAL;
213 }
214 /*saa7110_write(sd,0x06,0x03);*/
215 if (status & 0x20) { /* 60Hz */
216 v4l2_dbg(1, debug, sd, "status=0x%02x (NTSC)\n", status);
217 saa7110_write(sd, 0x0D, 0x86);
218 saa7110_write(sd, 0x0F, 0x50);
219 saa7110_write(sd, 0x11, 0x2C);
220 /*saa7110_write(sd,0x2E,0x81);*/
221 return V4L2_STD_NTSC;
222 }
223
224 /* 50Hz -> PAL/SECAM */
225 saa7110_write(sd, 0x0D, 0x86);
226 saa7110_write(sd, 0x0F, 0x10);
227 saa7110_write(sd, 0x11, 0x59);
228 /*saa7110_write(sd,0x2E,0x9A);*/
229
230 prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE);
231 schedule_timeout(msecs_to_jiffies(250));
232 finish_wait(&decoder->wq, &wait);
233
234 status = saa7110_read(sd);
235 if ((status & 0x03) == 0x01) {
236 v4l2_dbg(1, debug, sd, "status=0x%02x (SECAM)\n", status);
237 saa7110_write(sd, 0x0D, 0x87);
238 return V4L2_STD_SECAM;
239 }
240 v4l2_dbg(1, debug, sd, "status=0x%02x (PAL)\n", status);
241 return V4L2_STD_PAL;
242 }
243
244 static int saa7110_g_input_status(struct v4l2_subdev *sd, u32 *pstatus)
245 {
246 struct saa7110 *decoder = to_saa7110(sd);
247 int res = V4L2_IN_ST_NO_SIGNAL;
248 int status = saa7110_read(sd);
249
250 v4l2_dbg(1, debug, sd, "status=0x%02x norm=%llx\n",
251 status, (unsigned long long)decoder->norm);
252 if (!(status & 0x40))
253 res = 0;
254 if (!(status & 0x03))
255 res |= V4L2_IN_ST_NO_COLOR;
256
257 *pstatus = res;
258 return 0;
259 }
260
261 static int saa7110_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
262 {
263 *std &= determine_norm(sd);
264 return 0;
265 }
266
267 static int saa7110_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
268 {
269 struct saa7110 *decoder = to_saa7110(sd);
270
271 if (decoder->norm != std) {
272 decoder->norm = std;
273 /*saa7110_write(sd, 0x06, 0x03);*/
274 if (std & V4L2_STD_NTSC) {
275 saa7110_write(sd, 0x0D, 0x86);
276 saa7110_write(sd, 0x0F, 0x50);
277 saa7110_write(sd, 0x11, 0x2C);
278 /*saa7110_write(sd, 0x2E, 0x81);*/
279 v4l2_dbg(1, debug, sd, "switched to NTSC\n");
280 } else if (std & V4L2_STD_PAL) {
281 saa7110_write(sd, 0x0D, 0x86);
282 saa7110_write(sd, 0x0F, 0x10);
283 saa7110_write(sd, 0x11, 0x59);
284 /*saa7110_write(sd, 0x2E, 0x9A);*/
285 v4l2_dbg(1, debug, sd, "switched to PAL\n");
286 } else if (std & V4L2_STD_SECAM) {
287 saa7110_write(sd, 0x0D, 0x87);
288 saa7110_write(sd, 0x0F, 0x10);
289 saa7110_write(sd, 0x11, 0x59);
290 /*saa7110_write(sd, 0x2E, 0x9A);*/
291 v4l2_dbg(1, debug, sd, "switched to SECAM\n");
292 } else {
293 return -EINVAL;
294 }
295 }
296 return 0;
297 }
298
299 static int saa7110_s_routing(struct v4l2_subdev *sd,
300 u32 input, u32 output, u32 config)
301 {
302 struct saa7110 *decoder = to_saa7110(sd);
303
304 if (input >= SAA7110_MAX_INPUT) {
305 v4l2_dbg(1, debug, sd, "input=%d not available\n", input);
306 return -EINVAL;
307 }
308 if (decoder->input != input) {
309 saa7110_selmux(sd, input);
310 v4l2_dbg(1, debug, sd, "switched to input=%d\n", input);
311 }
312 return 0;
313 }
314
315 static int saa7110_s_stream(struct v4l2_subdev *sd, int enable)
316 {
317 struct saa7110 *decoder = to_saa7110(sd);
318
319 if (decoder->enable != enable) {
320 decoder->enable = enable;
321 saa7110_write(sd, 0x0E, enable ? 0x18 : 0x80);
322 v4l2_dbg(1, debug, sd, "YUV %s\n", enable ? "on" : "off");
323 }
324 return 0;
325 }
326
327 static int saa7110_s_ctrl(struct v4l2_ctrl *ctrl)
328 {
329 struct v4l2_subdev *sd = to_sd(ctrl);
330
331 switch (ctrl->id) {
332 case V4L2_CID_BRIGHTNESS:
333 saa7110_write(sd, 0x19, ctrl->val);
334 break;
335 case V4L2_CID_CONTRAST:
336 saa7110_write(sd, 0x13, ctrl->val);
337 break;
338 case V4L2_CID_SATURATION:
339 saa7110_write(sd, 0x12, ctrl->val);
340 break;
341 case V4L2_CID_HUE:
342 saa7110_write(sd, 0x07, ctrl->val);
343 break;
344 default:
345 return -EINVAL;
346 }
347 return 0;
348 }
349
350 /* ----------------------------------------------------------------------- */
351
352 static const struct v4l2_ctrl_ops saa7110_ctrl_ops = {
353 .s_ctrl = saa7110_s_ctrl,
354 };
355
356 static const struct v4l2_subdev_video_ops saa7110_video_ops = {
357 .s_std = saa7110_s_std,
358 .s_routing = saa7110_s_routing,
359 .s_stream = saa7110_s_stream,
360 .querystd = saa7110_querystd,
361 .g_input_status = saa7110_g_input_status,
362 };
363
364 static const struct v4l2_subdev_ops saa7110_ops = {
365 .video = &saa7110_video_ops,
366 };
367
368 /* ----------------------------------------------------------------------- */
369
370 static int saa7110_probe(struct i2c_client *client,
371 const struct i2c_device_id *id)
372 {
373 struct saa7110 *decoder;
374 struct v4l2_subdev *sd;
375 int rv;
376
377 /* Check if the adapter supports the needed features */
378 if (!i2c_check_functionality(client->adapter,
379 I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
380 return -ENODEV;
381
382 v4l_info(client, "chip found @ 0x%x (%s)\n",
383 client->addr << 1, client->adapter->name);
384
385 decoder = devm_kzalloc(&client->dev, sizeof(*decoder), GFP_KERNEL);
386 if (!decoder)
387 return -ENOMEM;
388 sd = &decoder->sd;
389 v4l2_i2c_subdev_init(sd, client, &saa7110_ops);
390 decoder->norm = V4L2_STD_PAL;
391 decoder->input = 0;
392 decoder->enable = 1;
393 v4l2_ctrl_handler_init(&decoder->hdl, 2);
394 v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops,
395 V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
396 v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops,
397 V4L2_CID_CONTRAST, 0, 127, 1, 64);
398 v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops,
399 V4L2_CID_SATURATION, 0, 127, 1, 64);
400 v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops,
401 V4L2_CID_HUE, -128, 127, 1, 0);
402 sd->ctrl_handler = &decoder->hdl;
403 if (decoder->hdl.error) {
404 int err = decoder->hdl.error;
405
406 v4l2_ctrl_handler_free(&decoder->hdl);
407 return err;
408 }
409 v4l2_ctrl_handler_setup(&decoder->hdl);
410
411 init_waitqueue_head(&decoder->wq);
412
413 rv = saa7110_write_block(sd, initseq, sizeof(initseq));
414 if (rv < 0) {
415 v4l2_dbg(1, debug, sd, "init status %d\n", rv);
416 } else {
417 int ver, status;
418 saa7110_write(sd, 0x21, 0x10);
419 saa7110_write(sd, 0x0e, 0x18);
420 saa7110_write(sd, 0x0D, 0x04);
421 ver = saa7110_read(sd);
422 saa7110_write(sd, 0x0D, 0x06);
423 /*mdelay(150);*/
424 status = saa7110_read(sd);
425 v4l2_dbg(1, debug, sd, "version %x, status=0x%02x\n",
426 ver, status);
427 saa7110_write(sd, 0x0D, 0x86);
428 saa7110_write(sd, 0x0F, 0x10);
429 saa7110_write(sd, 0x11, 0x59);
430 /*saa7110_write(sd, 0x2E, 0x9A);*/
431 }
432
433 /*saa7110_selmux(sd,0);*/
434 /*determine_norm(sd);*/
435 /* setup and implicit mode 0 select has been performed */
436
437 return 0;
438 }
439
440 static int saa7110_remove(struct i2c_client *client)
441 {
442 struct v4l2_subdev *sd = i2c_get_clientdata(client);
443 struct saa7110 *decoder = to_saa7110(sd);
444
445 v4l2_device_unregister_subdev(sd);
446 v4l2_ctrl_handler_free(&decoder->hdl);
447 return 0;
448 }
449
450 /* ----------------------------------------------------------------------- */
451
452 static const struct i2c_device_id saa7110_id[] = {
453 { "saa7110", 0 },
454 { }
455 };
456 MODULE_DEVICE_TABLE(i2c, saa7110_id);
457
458 static struct i2c_driver saa7110_driver = {
459 .driver = {
460 .name = "saa7110",
461 },
462 .probe = saa7110_probe,
463 .remove = saa7110_remove,
464 .id_table = saa7110_id,
465 };
466
467 module_i2c_driver(saa7110_driver);
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