blob: f318b51448b3b0a3607210668bd7d9a16844b0b6 [file] [log] [blame]
Mauro Carvalho Chehabd56410e2006-03-25 09:19:53 -03001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 * 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>
Mauro Carvalho Chehab18f3fa12007-07-02 15:39:57 -030028#include <linux/types.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090029#include <linux/slab.h>
Hans Verkuilbba0d982008-09-07 07:58:46 -030030#include <linux/ioctl.h>
Mauro Carvalho Chehab18f3fa12007-07-02 15:39:57 -030031#include <asm/uaccess.h>
Hans Verkuilbba0d982008-09-07 07:58:46 -030032#include <linux/i2c.h>
Hans Verkuil35631dc2009-02-19 14:56:37 -030033#include <linux/videodev2.h>
34#include <media/v4l2-device.h>
35#include <media/v4l2-chip-ident.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070036
37MODULE_DESCRIPTION("Analog Devices ADV7175 video encoder driver");
38MODULE_AUTHOR("Dave Perks");
39MODULE_LICENSE("GPL");
40
Hans Verkuil35631dc2009-02-19 14:56:37 -030041#define I2C_ADV7175 0xd4
42#define I2C_ADV7176 0x54
43
Hans Verkuil35631dc2009-02-19 14:56:37 -030044
Douglas Schilling Landgrafff699e62008-04-22 14:41:48 -030045static int debug;
Linus Torvalds1da177e2005-04-16 15:20:36 -070046module_param(debug, int, 0);
47MODULE_PARM_DESC(debug, "Debug level (0-1)");
48
Linus Torvalds1da177e2005-04-16 15:20:36 -070049/* ----------------------------------------------------------------------- */
50
51struct adv7175 {
Hans Verkuil35631dc2009-02-19 14:56:37 -030052 struct v4l2_subdev sd;
Hans Verkuil107063c2009-02-18 17:26:06 -030053 v4l2_std_id norm;
Linus Torvalds1da177e2005-04-16 15:20:36 -070054 int input;
Linus Torvalds1da177e2005-04-16 15:20:36 -070055};
56
Hans Verkuil35631dc2009-02-19 14:56:37 -030057static inline struct adv7175 *to_adv7175(struct v4l2_subdev *sd)
58{
59 return container_of(sd, struct adv7175, sd);
60}
Linus Torvalds1da177e2005-04-16 15:20:36 -070061
Linus Torvalds1da177e2005-04-16 15:20:36 -070062static char *inputs[] = { "pass_through", "play_back", "color_bar" };
Linus Torvalds1da177e2005-04-16 15:20:36 -070063
64/* ----------------------------------------------------------------------- */
65
Hans Verkuil35631dc2009-02-19 14:56:37 -030066static inline int adv7175_write(struct v4l2_subdev *sd, u8 reg, u8 value)
Linus Torvalds1da177e2005-04-16 15:20:36 -070067{
Hans Verkuil35631dc2009-02-19 14:56:37 -030068 struct i2c_client *client = v4l2_get_subdevdata(sd);
69
Linus Torvalds1da177e2005-04-16 15:20:36 -070070 return i2c_smbus_write_byte_data(client, reg, value);
71}
72
Hans Verkuil35631dc2009-02-19 14:56:37 -030073static inline int adv7175_read(struct v4l2_subdev *sd, u8 reg)
Linus Torvalds1da177e2005-04-16 15:20:36 -070074{
Hans Verkuil35631dc2009-02-19 14:56:37 -030075 struct i2c_client *client = v4l2_get_subdevdata(sd);
76
Linus Torvalds1da177e2005-04-16 15:20:36 -070077 return i2c_smbus_read_byte_data(client, reg);
78}
79
Hans Verkuil35631dc2009-02-19 14:56:37 -030080static int adv7175_write_block(struct v4l2_subdev *sd,
Hans Verkuilbba0d982008-09-07 07:58:46 -030081 const u8 *data, unsigned int len)
Linus Torvalds1da177e2005-04-16 15:20:36 -070082{
Hans Verkuil35631dc2009-02-19 14:56:37 -030083 struct i2c_client *client = v4l2_get_subdevdata(sd);
Linus Torvalds1da177e2005-04-16 15:20:36 -070084 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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070091 u8 block_data[32];
Jean Delvare9aa45e32006-03-22 03:48:35 -030092 int block_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -070093
Linus Torvalds1da177e2005-04-16 15:20:36 -070094 while (len >= 2) {
Jean Delvare9aa45e32006-03-22 03:48:35 -030095 block_len = 0;
96 block_data[block_len++] = reg = data[0];
Linus Torvalds1da177e2005-04-16 15:20:36 -070097 do {
Jean Delvare9aa45e32006-03-22 03:48:35 -030098 block_data[block_len++] = data[1];
Jean Delvare2467a672006-03-22 03:48:34 -030099 reg++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100 len -= 2;
101 data += 2;
Hans Verkuilbba0d982008-09-07 07:58:46 -0300102 } while (len >= 2 && data[0] == reg && block_len < 32);
103 ret = i2c_master_send(client, block_data, block_len);
104 if (ret < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105 break;
106 }
107 } else {
108 /* do some slow I2C emulation kind of thing */
109 while (len >= 2) {
110 reg = *data++;
Hans Verkuil35631dc2009-02-19 14:56:37 -0300111 ret = adv7175_write(sd, reg, *data++);
Hans Verkuilbba0d982008-09-07 07:58:46 -0300112 if (ret < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113 break;
114 len -= 2;
115 }
116 }
117
118 return ret;
119}
120
Hans Verkuil35631dc2009-02-19 14:56:37 -0300121static void set_subcarrier_freq(struct v4l2_subdev *sd, int pass_through)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122{
123 /* for some reason pass_through NTSC needs
124 * a different sub-carrier freq to remain stable. */
Hans Verkuilbba0d982008-09-07 07:58:46 -0300125 if (pass_through)
Hans Verkuil35631dc2009-02-19 14:56:37 -0300126 adv7175_write(sd, 0x02, 0x00);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127 else
Hans Verkuil35631dc2009-02-19 14:56:37 -0300128 adv7175_write(sd, 0x02, 0x55);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129
Hans Verkuil35631dc2009-02-19 14:56:37 -0300130 adv7175_write(sd, 0x03, 0x55);
131 adv7175_write(sd, 0x04, 0x55);
132 adv7175_write(sd, 0x05, 0x25);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133}
134
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135/* ----------------------------------------------------------------------- */
Hans Verkuilbba0d982008-09-07 07:58:46 -0300136/* Output filter: S-Video Composite */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137
Hans Verkuilbba0d982008-09-07 07:58:46 -0300138#define MR050 0x11 /* 0x09 */
139#define MR060 0x14 /* 0x0c */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140
Hans Verkuilbba0d982008-09-07 07:58:46 -0300141/* ----------------------------------------------------------------------- */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142
143#define TR0MODE 0x46
144#define TR0RST 0x80
145
146#define TR1CAPT 0x80
147#define TR1PLAY 0x00
148
149static 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
172static 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
182static 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
Hans Verkuil35631dc2009-02-19 14:56:37 -0300192static int adv7175_init(struct v4l2_subdev *sd, u32 val)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193{
Hans Verkuil35631dc2009-02-19 14:56:37 -0300194 /* 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}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200
Hans Verkuil35631dc2009-02-19 14:56:37 -0300201static int adv7175_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
202{
203 struct adv7175 *encoder = to_adv7175(sd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204
Hans Verkuil35631dc2009-02-19 14:56:37 -0300205 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 {
Hans Verkuilcc5cef82009-03-06 10:15:01 -0300230 v4l2_dbg(1, debug, sd, "illegal norm: %llx\n",
231 (unsigned long long)std);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232 return -EINVAL;
233 }
Hans Verkuilcc5cef82009-03-06 10:15:01 -0300234 v4l2_dbg(1, debug, sd, "switched to %llx\n", (unsigned long long)std);
Hans Verkuil35631dc2009-02-19 14:56:37 -0300235 encoder->norm = std;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236 return 0;
237}
238
Hans Verkuil5325b422009-04-02 11:26:22 -0300239static int adv7175_s_routing(struct v4l2_subdev *sd,
240 u32 input, u32 output, u32 config)
Hans Verkuil35631dc2009-02-19 14:56:37 -0300241{
242 struct adv7175 *encoder = to_adv7175(sd);
243
Hans Verkuil5325b422009-04-02 11:26:22 -0300244 /* RJ: input = 0: input is from decoder
245 input = 1: input is from ZR36060
246 input = 2: color bar */
Hans Verkuil35631dc2009-02-19 14:56:37 -0300247
Hans Verkuil5325b422009-04-02 11:26:22 -0300248 switch (input) {
Hans Verkuil35631dc2009-02-19 14:56:37 -0300249 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:
Hans Verkuil5325b422009-04-02 11:26:22 -0300291 v4l2_dbg(1, debug, sd, "illegal input: %d\n", input);
Hans Verkuil35631dc2009-02-19 14:56:37 -0300292 return -EINVAL;
293 }
Hans Verkuil5325b422009-04-02 11:26:22 -0300294 v4l2_dbg(1, debug, sd, "switched to %s\n", inputs[input]);
295 encoder->input = input;
Hans Verkuil35631dc2009-02-19 14:56:37 -0300296 return 0;
297}
298
299static 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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306/* ----------------------------------------------------------------------- */
307
Hans Verkuil35631dc2009-02-19 14:56:37 -0300308static const struct v4l2_subdev_core_ops adv7175_core_ops = {
309 .g_chip_ident = adv7175_g_chip_ident,
310 .init = adv7175_init,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312
Hans Verkuil35631dc2009-02-19 14:56:37 -0300313static const struct v4l2_subdev_video_ops adv7175_video_ops = {
314 .s_std_output = adv7175_s_std_output,
315 .s_routing = adv7175_s_routing,
316};
317
318static const struct v4l2_subdev_ops adv7175_ops = {
319 .core = &adv7175_core_ops,
320 .video = &adv7175_video_ops,
321};
322
323/* ----------------------------------------------------------------------- */
Mauro Carvalho Chehabd56410e2006-03-25 09:19:53 -0300324
Hans Verkuilbba0d982008-09-07 07:58:46 -0300325static int adv7175_probe(struct i2c_client *client,
326 const struct i2c_device_id *id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327{
328 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329 struct adv7175 *encoder;
Hans Verkuil35631dc2009-02-19 14:56:37 -0300330 struct v4l2_subdev *sd;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331
332 /* Check if the adapter supports the needed features */
Hans Verkuilbba0d982008-09-07 07:58:46 -0300333 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
334 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700335
Hans Verkuilbba0d982008-09-07 07:58:46 -0300336 v4l_info(client, "chip found @ 0x%x (%s)\n",
337 client->addr << 1, client->adapter->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338
Panagiotis Issaris74081872006-01-11 19:40:56 -0200339 encoder = kzalloc(sizeof(struct adv7175), GFP_KERNEL);
Hans Verkuilbba0d982008-09-07 07:58:46 -0300340 if (encoder == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341 return -ENOMEM;
Hans Verkuil35631dc2009-02-19 14:56:37 -0300342 sd = &encoder->sd;
343 v4l2_i2c_subdev_init(sd, client, &adv7175_ops);
Hans Verkuil107063c2009-02-18 17:26:06 -0300344 encoder->norm = V4L2_STD_NTSC;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345 encoder->input = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346
Hans Verkuil35631dc2009-02-19 14:56:37 -0300347 i = adv7175_write_block(sd, init_common, sizeof(init_common));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348 if (i >= 0) {
Hans Verkuil35631dc2009-02-19 14:56:37 -0300349 i = adv7175_write(sd, 0x07, TR0MODE | TR0RST);
350 i = adv7175_write(sd, 0x07, TR0MODE);
351 i = adv7175_read(sd, 0x12);
352 v4l2_dbg(1, debug, sd, "revision %d\n", i & 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353 }
Hans Verkuilbba0d982008-09-07 07:58:46 -0300354 if (i < 0)
Hans Verkuil35631dc2009-02-19 14:56:37 -0300355 v4l2_dbg(1, debug, sd, "init error 0x%x\n", i);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356 return 0;
357}
358
Hans Verkuilbba0d982008-09-07 07:58:46 -0300359static int adv7175_remove(struct i2c_client *client)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360{
Hans Verkuil35631dc2009-02-19 14:56:37 -0300361 struct v4l2_subdev *sd = i2c_get_clientdata(client);
362
363 v4l2_device_unregister_subdev(sd);
364 kfree(to_adv7175(sd));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365 return 0;
366}
367
368/* ----------------------------------------------------------------------- */
369
Hans Verkuilbba0d982008-09-07 07:58:46 -0300370static const struct i2c_device_id adv7175_id[] = {
371 { "adv7175", 0 },
372 { "adv7176", 0 },
373 { }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374};
Hans Verkuilbba0d982008-09-07 07:58:46 -0300375MODULE_DEVICE_TABLE(i2c, adv7175_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376
Hans Verkuildc714432010-09-15 15:29:53 -0300377static struct i2c_driver adv7175_driver = {
378 .driver = {
379 .owner = THIS_MODULE,
380 .name = "adv7175",
381 },
382 .probe = adv7175_probe,
383 .remove = adv7175_remove,
384 .id_table = adv7175_id,
Hans Verkuilbba0d982008-09-07 07:58:46 -0300385};
Hans Verkuildc714432010-09-15 15:29:53 -0300386
387static __init int init_adv7175(void)
388{
389 return i2c_add_driver(&adv7175_driver);
390}
391
392static __exit void exit_adv7175(void)
393{
394 i2c_del_driver(&adv7175_driver);
395}
396
397module_init(init_adv7175);
398module_exit(exit_adv7175);