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sh_eth: R8A7740 supports packet shecksumming
[linux/fpc-iii.git] / drivers / media / i2c / saa7110.c
blobad456ce051f9f6e2e95a7a88c2214b662e965ec2
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 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 */
27
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/types.h>
31 #include <linux/delay.h>
32 #include <linux/slab.h>
33 #include <linux/wait.h>
34 #include <linux/uaccess.h>
35 #include <linux/i2c.h>
36 #include <linux/videodev2.h>
37 #include <media/v4l2-device.h>
38 #include <media/v4l2-ctrls.h>
39
40 MODULE_DESCRIPTION("Philips SAA7110 video decoder driver");
41 MODULE_AUTHOR("Pauline Middelink");
42 MODULE_LICENSE("GPL");
43
44
45 static int debug;
46 module_param(debug, int, 0);
47 MODULE_PARM_DESC(debug, "Debug level (0-1)");
48
49 #define SAA7110_MAX_INPUT 9 /* 6 CVBS, 3 SVHS */
50 #define SAA7110_MAX_OUTPUT 1 /* 1 YUV */
51
52 #define SAA7110_NR_REG 0x35
53
54 struct saa7110 {
55 struct v4l2_subdev sd;
56 struct v4l2_ctrl_handler hdl;
57 u8 reg[SAA7110_NR_REG];
58
59 v4l2_std_id norm;
60 int input;
61 int enable;
62
63 wait_queue_head_t wq;
64 };
65
66 static inline struct saa7110 *to_saa7110(struct v4l2_subdev *sd)
67 {
68 return container_of(sd, struct saa7110, sd);
69 }
70
71 static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
72 {
73 return &container_of(ctrl->handler, struct saa7110, hdl)->sd;
74 }
75
76 /* ----------------------------------------------------------------------- */
77 /* I2C support functions */
78 /* ----------------------------------------------------------------------- */
79
80 static int saa7110_write(struct v4l2_subdev *sd, u8 reg, u8 value)
81 {
82 struct i2c_client *client = v4l2_get_subdevdata(sd);
83 struct saa7110 *decoder = to_saa7110(sd);
84
85 decoder->reg[reg] = value;
86 return i2c_smbus_write_byte_data(client, reg, value);
87 }
88
89 static int saa7110_write_block(struct v4l2_subdev *sd, const u8 *data, unsigned int len)
90 {
91 struct i2c_client *client = v4l2_get_subdevdata(sd);
92 struct saa7110 *decoder = to_saa7110(sd);
93 int ret = -1;
94 u8 reg = *data; /* first register to write to */
95
96 /* Sanity check */
97 if (reg + (len - 1) > SAA7110_NR_REG)
98 return ret;
99
100 /* the saa7110 has an autoincrement function, use it if
101 * the adapter understands raw I2C */
102 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
103 ret = i2c_master_send(client, data, len);
104
105 /* Cache the written data */
106 memcpy(decoder->reg + reg, data + 1, len - 1);
107 } else {
108 for (++data, --len; len; len--) {
109 ret = saa7110_write(sd, reg++, *data++);
110 if (ret < 0)
111 break;
112 }
113 }
114
115 return ret;
116 }
117
118 static inline int saa7110_read(struct v4l2_subdev *sd)
119 {
120 struct i2c_client *client = v4l2_get_subdevdata(sd);
121
122 return i2c_smbus_read_byte(client);
123 }
124
125 /* ----------------------------------------------------------------------- */
126 /* SAA7110 functions */
127 /* ----------------------------------------------------------------------- */
128
129 #define FRESP_06H_COMPST 0x03 /*0x13*/
130 #define FRESP_06H_SVIDEO 0x83 /*0xC0*/
131
132
133 static int saa7110_selmux(struct v4l2_subdev *sd, int chan)
134 {
135 static const unsigned char modes[9][8] = {
136 /* mode 0 */
137 {FRESP_06H_COMPST, 0xD9, 0x17, 0x40, 0x03,
138 0x44, 0x75, 0x16},
139 /* mode 1 */
140 {FRESP_06H_COMPST, 0xD8, 0x17, 0x40, 0x03,
141 0x44, 0x75, 0x16},
142 /* mode 2 */
143 {FRESP_06H_COMPST, 0xBA, 0x07, 0x91, 0x03,
144 0x60, 0xB5, 0x05},
145 /* mode 3 */
146 {FRESP_06H_COMPST, 0xB8, 0x07, 0x91, 0x03,
147 0x60, 0xB5, 0x05},
148 /* mode 4 */
149 {FRESP_06H_COMPST, 0x7C, 0x07, 0xD2, 0x83,
150 0x60, 0xB5, 0x03},
151 /* mode 5 */
152 {FRESP_06H_COMPST, 0x78, 0x07, 0xD2, 0x83,
153 0x60, 0xB5, 0x03},
154 /* mode 6 */
155 {FRESP_06H_SVIDEO, 0x59, 0x17, 0x42, 0xA3,
156 0x44, 0x75, 0x12},
157 /* mode 7 */
158 {FRESP_06H_SVIDEO, 0x9A, 0x17, 0xB1, 0x13,
159 0x60, 0xB5, 0x14},
160 /* mode 8 */
161 {FRESP_06H_SVIDEO, 0x3C, 0x27, 0xC1, 0x23,
162 0x44, 0x75, 0x21}
163 };
164 struct saa7110 *decoder = to_saa7110(sd);
165 const unsigned char *ptr = modes[chan];
166
167 saa7110_write(sd, 0x06, ptr[0]); /* Luminance control */
168 saa7110_write(sd, 0x20, ptr[1]); /* Analog Control #1 */
169 saa7110_write(sd, 0x21, ptr[2]); /* Analog Control #2 */
170 saa7110_write(sd, 0x22, ptr[3]); /* Mixer Control #1 */
171 saa7110_write(sd, 0x2C, ptr[4]); /* Mixer Control #2 */
172 saa7110_write(sd, 0x30, ptr[5]); /* ADCs gain control */
173 saa7110_write(sd, 0x31, ptr[6]); /* Mixer Control #3 */
174 saa7110_write(sd, 0x21, ptr[7]); /* Analog Control #2 */
175 decoder->input = chan;
176
177 return 0;
178 }
179
180 static const unsigned char initseq[1 + SAA7110_NR_REG] = {
181 0, 0x4C, 0x3C, 0x0D, 0xEF, 0xBD, 0xF2, 0x03, 0x00,
182 /* 0x08 */ 0xF8, 0xF8, 0x60, 0x60, 0x00, 0x86, 0x18, 0x90,
183 /* 0x10 */ 0x00, 0x59, 0x40, 0x46, 0x42, 0x1A, 0xFF, 0xDA,
184 /* 0x18 */ 0xF2, 0x8B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
185 /* 0x20 */ 0xD9, 0x16, 0x40, 0x41, 0x80, 0x41, 0x80, 0x4F,
186 /* 0x28 */ 0xFE, 0x01, 0xCF, 0x0F, 0x03, 0x01, 0x03, 0x0C,
187 /* 0x30 */ 0x44, 0x71, 0x02, 0x8C, 0x02
188 };
189
190 static v4l2_std_id determine_norm(struct v4l2_subdev *sd)
191 {
192 DEFINE_WAIT(wait);
193 struct saa7110 *decoder = to_saa7110(sd);
194 int status;
195
196 /* mode changed, start automatic detection */
197 saa7110_write_block(sd, initseq, sizeof(initseq));
198 saa7110_selmux(sd, decoder->input);
199 prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE);
200 schedule_timeout(msecs_to_jiffies(250));
201 finish_wait(&decoder->wq, &wait);
202 status = saa7110_read(sd);
203 if (status & 0x40) {
204 v4l2_dbg(1, debug, sd, "status=0x%02x (no signal)\n", status);
205 return V4L2_STD_UNKNOWN;
206 }
207 if ((status & 3) == 0) {
208 saa7110_write(sd, 0x06, 0x83);
209 if (status & 0x20) {
210 v4l2_dbg(1, debug, sd, "status=0x%02x (NTSC/no color)\n", status);
211 /*saa7110_write(sd,0x2E,0x81);*/
212 return V4L2_STD_NTSC;
213 }
214 v4l2_dbg(1, debug, sd, "status=0x%02x (PAL/no color)\n", status);
215 /*saa7110_write(sd,0x2E,0x9A);*/
216 return V4L2_STD_PAL;
217 }
218 /*saa7110_write(sd,0x06,0x03);*/
219 if (status & 0x20) { /* 60Hz */
220 v4l2_dbg(1, debug, sd, "status=0x%02x (NTSC)\n", status);
221 saa7110_write(sd, 0x0D, 0x86);
222 saa7110_write(sd, 0x0F, 0x50);
223 saa7110_write(sd, 0x11, 0x2C);
224 /*saa7110_write(sd,0x2E,0x81);*/
225 return V4L2_STD_NTSC;
226 }
227
228 /* 50Hz -> PAL/SECAM */
229 saa7110_write(sd, 0x0D, 0x86);
230 saa7110_write(sd, 0x0F, 0x10);
231 saa7110_write(sd, 0x11, 0x59);
232 /*saa7110_write(sd,0x2E,0x9A);*/
233
234 prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE);
235 schedule_timeout(msecs_to_jiffies(250));
236 finish_wait(&decoder->wq, &wait);
237
238 status = saa7110_read(sd);
239 if ((status & 0x03) == 0x01) {
240 v4l2_dbg(1, debug, sd, "status=0x%02x (SECAM)\n", status);
241 saa7110_write(sd, 0x0D, 0x87);
242 return V4L2_STD_SECAM;
243 }
244 v4l2_dbg(1, debug, sd, "status=0x%02x (PAL)\n", status);
245 return V4L2_STD_PAL;
246 }
247
248 static int saa7110_g_input_status(struct v4l2_subdev *sd, u32 *pstatus)
249 {
250 struct saa7110 *decoder = to_saa7110(sd);
251 int res = V4L2_IN_ST_NO_SIGNAL;
252 int status = saa7110_read(sd);
253
254 v4l2_dbg(1, debug, sd, "status=0x%02x norm=%llx\n",
255 status, (unsigned long long)decoder->norm);
256 if (!(status & 0x40))
257 res = 0;
258 if (!(status & 0x03))
259 res |= V4L2_IN_ST_NO_COLOR;
260
261 *pstatus = res;
262 return 0;
263 }
264
265 static int saa7110_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
266 {
267 *std &= determine_norm(sd);
268 return 0;
269 }
270
271 static int saa7110_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
272 {
273 struct saa7110 *decoder = to_saa7110(sd);
274
275 if (decoder->norm != std) {
276 decoder->norm = std;
277 /*saa7110_write(sd, 0x06, 0x03);*/
278 if (std & V4L2_STD_NTSC) {
279 saa7110_write(sd, 0x0D, 0x86);
280 saa7110_write(sd, 0x0F, 0x50);
281 saa7110_write(sd, 0x11, 0x2C);
282 /*saa7110_write(sd, 0x2E, 0x81);*/
283 v4l2_dbg(1, debug, sd, "switched to NTSC\n");
284 } else if (std & V4L2_STD_PAL) {
285 saa7110_write(sd, 0x0D, 0x86);
286 saa7110_write(sd, 0x0F, 0x10);
287 saa7110_write(sd, 0x11, 0x59);
288 /*saa7110_write(sd, 0x2E, 0x9A);*/
289 v4l2_dbg(1, debug, sd, "switched to PAL\n");
290 } else if (std & V4L2_STD_SECAM) {
291 saa7110_write(sd, 0x0D, 0x87);
292 saa7110_write(sd, 0x0F, 0x10);
293 saa7110_write(sd, 0x11, 0x59);
294 /*saa7110_write(sd, 0x2E, 0x9A);*/
295 v4l2_dbg(1, debug, sd, "switched to SECAM\n");
296 } else {
297 return -EINVAL;
298 }
299 }
300 return 0;
301 }
302
303 static int saa7110_s_routing(struct v4l2_subdev *sd,
304 u32 input, u32 output, u32 config)
305 {
306 struct saa7110 *decoder = to_saa7110(sd);
307
308 if (input >= SAA7110_MAX_INPUT) {
309 v4l2_dbg(1, debug, sd, "input=%d not available\n", input);
310 return -EINVAL;
311 }
312 if (decoder->input != input) {
313 saa7110_selmux(sd, input);
314 v4l2_dbg(1, debug, sd, "switched to input=%d\n", input);
315 }
316 return 0;
317 }
318
319 static int saa7110_s_stream(struct v4l2_subdev *sd, int enable)
320 {
321 struct saa7110 *decoder = to_saa7110(sd);
322
323 if (decoder->enable != enable) {
324 decoder->enable = enable;
325 saa7110_write(sd, 0x0E, enable ? 0x18 : 0x80);
326 v4l2_dbg(1, debug, sd, "YUV %s\n", enable ? "on" : "off");
327 }
328 return 0;
329 }
330
331 static int saa7110_s_ctrl(struct v4l2_ctrl *ctrl)
332 {
333 struct v4l2_subdev *sd = to_sd(ctrl);
334
335 switch (ctrl->id) {
336 case V4L2_CID_BRIGHTNESS:
337 saa7110_write(sd, 0x19, ctrl->val);
338 break;
339 case V4L2_CID_CONTRAST:
340 saa7110_write(sd, 0x13, ctrl->val);
341 break;
342 case V4L2_CID_SATURATION:
343 saa7110_write(sd, 0x12, ctrl->val);
344 break;
345 case V4L2_CID_HUE:
346 saa7110_write(sd, 0x07, ctrl->val);
347 break;
348 default:
349 return -EINVAL;
350 }
351 return 0;
352 }
353
354 /* ----------------------------------------------------------------------- */
355
356 static const struct v4l2_ctrl_ops saa7110_ctrl_ops = {
357 .s_ctrl = saa7110_s_ctrl,
358 };
359
360 static const struct v4l2_subdev_video_ops saa7110_video_ops = {
361 .s_std = saa7110_s_std,
362 .s_routing = saa7110_s_routing,
363 .s_stream = saa7110_s_stream,
364 .querystd = saa7110_querystd,
365 .g_input_status = saa7110_g_input_status,
366 };
367
368 static const struct v4l2_subdev_ops saa7110_ops = {
369 .video = &saa7110_video_ops,
370 };
371
372 /* ----------------------------------------------------------------------- */
373
374 static int saa7110_probe(struct i2c_client *client,
375 const struct i2c_device_id *id)
376 {
377 struct saa7110 *decoder;
378 struct v4l2_subdev *sd;
379 int rv;
380
381 /* Check if the adapter supports the needed features */
382 if (!i2c_check_functionality(client->adapter,
383 I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
384 return -ENODEV;
385
386 v4l_info(client, "chip found @ 0x%x (%s)\n",
387 client->addr << 1, client->adapter->name);
388
389 decoder = devm_kzalloc(&client->dev, sizeof(*decoder), GFP_KERNEL);
390 if (!decoder)
391 return -ENOMEM;
392 sd = &decoder->sd;
393 v4l2_i2c_subdev_init(sd, client, &saa7110_ops);
394 decoder->norm = V4L2_STD_PAL;
395 decoder->input = 0;
396 decoder->enable = 1;
397 v4l2_ctrl_handler_init(&decoder->hdl, 2);
398 v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops,
399 V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
400 v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops,
401 V4L2_CID_CONTRAST, 0, 127, 1, 64);
402 v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops,
403 V4L2_CID_SATURATION, 0, 127, 1, 64);
404 v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops,
405 V4L2_CID_HUE, -128, 127, 1, 0);
406 sd->ctrl_handler = &decoder->hdl;
407 if (decoder->hdl.error) {
408 int err = decoder->hdl.error;
409
410 v4l2_ctrl_handler_free(&decoder->hdl);
411 return err;
412 }
413 v4l2_ctrl_handler_setup(&decoder->hdl);
414
415 init_waitqueue_head(&decoder->wq);
416
417 rv = saa7110_write_block(sd, initseq, sizeof(initseq));
418 if (rv < 0) {
419 v4l2_dbg(1, debug, sd, "init status %d\n", rv);
420 } else {
421 int ver, status;
422 saa7110_write(sd, 0x21, 0x10);
423 saa7110_write(sd, 0x0e, 0x18);
424 saa7110_write(sd, 0x0D, 0x04);
425 ver = saa7110_read(sd);
426 saa7110_write(sd, 0x0D, 0x06);
427 /*mdelay(150);*/
428 status = saa7110_read(sd);
429 v4l2_dbg(1, debug, sd, "version %x, status=0x%02x\n",
430 ver, status);
431 saa7110_write(sd, 0x0D, 0x86);
432 saa7110_write(sd, 0x0F, 0x10);
433 saa7110_write(sd, 0x11, 0x59);
434 /*saa7110_write(sd, 0x2E, 0x9A);*/
435 }
436
437 /*saa7110_selmux(sd,0);*/
438 /*determine_norm(sd);*/
439 /* setup and implicit mode 0 select has been performed */
440
441 return 0;
442 }
443
444 static int saa7110_remove(struct i2c_client *client)
445 {
446 struct v4l2_subdev *sd = i2c_get_clientdata(client);
447 struct saa7110 *decoder = to_saa7110(sd);
448
449 v4l2_device_unregister_subdev(sd);
450 v4l2_ctrl_handler_free(&decoder->hdl);
451 return 0;
452 }
453
454 /* ----------------------------------------------------------------------- */
455
456 static const struct i2c_device_id saa7110_id[] = {
457 { "saa7110", 0 },
458 { }
459 };
460 MODULE_DEVICE_TABLE(i2c, saa7110_id);
461
462 static struct i2c_driver saa7110_driver = {
463 .driver = {
464 .name = "saa7110",
465 },
466 .probe = saa7110_probe,
467 .remove = saa7110_remove,
468 .id_table = saa7110_id,
469 };
470
471 module_i2c_driver(saa7110_driver);
Linux with added FPC-III support