654863db15919b4e5a9c7d891195d75b3afaa4fa
[linux-2.6.git] / drivers / media / video / saa7127.c
1 /*
2  * saa7127 - Philips SAA7127/SAA7129 video encoder driver
3  *
4  * Copyright (C) 2003 Roy Bulter <rbulter@hetnet.nl>
5  *
6  * Based on SAA7126 video encoder driver by Gillem & Andreas Oberritter
7  *
8  * Copyright (C) 2000-2001 Gillem <htoa@gmx.net>
9  * Copyright (C) 2002 Andreas Oberritter <obi@saftware.de>
10  *
11  * Based on Stadis 4:2:2 MPEG-2 Decoder Driver by Nathan Laredo
12  *
13  * Copyright (C) 1999 Nathan Laredo <laredo@gnu.org>
14  *
15  * This driver is designed for the Hauppauge 250/350 Linux driver
16  * from the ivtv Project
17  *
18  * Copyright (C) 2003 Kevin Thayer <nufan_wfk@yahoo.com>
19  *
20  * Dual output support:
21  * Copyright (C) 2004 Eric Varsanyi
22  *
23  * NTSC Tuning and 7.5 IRE Setup
24  * Copyright (C) 2004  Chris Kennedy <c@groovy.org>
25  *
26  * VBI additions & cleanup:
27  * Copyright (C) 2004, 2005 Hans Verkuil <hverkuil@xs4all.nl>
28  *
29  * Note: the saa7126 is identical to the saa7127, and the saa7128 is
30  * identical to the saa7129, except that the saa7126 and saa7128 have
31  * macrovision anti-taping support. This driver will almost certainly
32  * work find for those chips, except of course for the missing anti-taping
33  * support.
34  *
35  * This program is free software; you can redistribute it and/or modify
36  * it under the terms of the GNU General Public License as published by
37  * the Free Software Foundation; either version 2 of the License, or
38  * (at your option) any later version.
39  *
40  * This program is distributed in the hope that it will be useful,
41  * but WITHOUT ANY WARRANTY; without even the implied warranty of
42  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
43  * GNU General Public License for more details.
44  *
45  * You should have received a copy of the GNU General Public License
46  * along with this program; if not, write to the Free Software
47  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
48  */
49
50
51 #include <linux/kernel.h>
52 #include <linux/module.h>
53 #include <linux/slab.h>
54 #include <linux/i2c.h>
55 #include <linux/videodev2.h>
56 #include <media/v4l2-common.h>
57 #include <media/saa7127.h>
58
59 static int debug = 0;
60 static int test_image = 0;
61
62 MODULE_DESCRIPTION("Philips SAA7127/9 video encoder driver");
63 MODULE_AUTHOR("Kevin Thayer, Chris Kennedy, Hans Verkuil");
64 MODULE_LICENSE("GPL");
65 module_param(debug, int, 0644);
66 module_param(test_image, int, 0644);
67 MODULE_PARM_DESC(debug, "debug level (0-2)");
68 MODULE_PARM_DESC(test_image, "test_image (0-1)");
69
70 static unsigned short normal_i2c[] = { 0x88 >> 1, I2C_CLIENT_END };
71
72
73 I2C_CLIENT_INSMOD;
74
75 /*
76  * SAA7127 registers
77  */
78
79 #define SAA7127_REG_STATUS                           0x00
80 #define SAA7127_REG_WIDESCREEN_CONFIG                0x26
81 #define SAA7127_REG_WIDESCREEN_ENABLE                0x27
82 #define SAA7127_REG_BURST_START                      0x28
83 #define SAA7127_REG_BURST_END                        0x29
84 #define SAA7127_REG_COPYGEN_0                        0x2a
85 #define SAA7127_REG_COPYGEN_1                        0x2b
86 #define SAA7127_REG_COPYGEN_2                        0x2c
87 #define SAA7127_REG_OUTPUT_PORT_CONTROL              0x2d
88 #define SAA7127_REG_GAIN_LUMINANCE_RGB               0x38
89 #define SAA7127_REG_GAIN_COLORDIFF_RGB               0x39
90 #define SAA7127_REG_INPUT_PORT_CONTROL_1             0x3a
91 #define SAA7129_REG_FADE_KEY_COL2                    0x4f
92 #define SAA7127_REG_CHROMA_PHASE                     0x5a
93 #define SAA7127_REG_GAINU                            0x5b
94 #define SAA7127_REG_GAINV                            0x5c
95 #define SAA7127_REG_BLACK_LEVEL                      0x5d
96 #define SAA7127_REG_BLANKING_LEVEL                   0x5e
97 #define SAA7127_REG_VBI_BLANKING                     0x5f
98 #define SAA7127_REG_DAC_CONTROL                      0x61
99 #define SAA7127_REG_BURST_AMP                        0x62
100 #define SAA7127_REG_SUBC3                            0x63
101 #define SAA7127_REG_SUBC2                            0x64
102 #define SAA7127_REG_SUBC1                            0x65
103 #define SAA7127_REG_SUBC0                            0x66
104 #define SAA7127_REG_LINE_21_ODD_0                    0x67
105 #define SAA7127_REG_LINE_21_ODD_1                    0x68
106 #define SAA7127_REG_LINE_21_EVEN_0                   0x69
107 #define SAA7127_REG_LINE_21_EVEN_1                   0x6a
108 #define SAA7127_REG_RCV_PORT_CONTROL                 0x6b
109 #define SAA7127_REG_VTRIG                            0x6c
110 #define SAA7127_REG_HTRIG_HI                         0x6d
111 #define SAA7127_REG_MULTI                            0x6e
112 #define SAA7127_REG_CLOSED_CAPTION                   0x6f
113 #define SAA7127_REG_RCV2_OUTPUT_START                0x70
114 #define SAA7127_REG_RCV2_OUTPUT_END                  0x71
115 #define SAA7127_REG_RCV2_OUTPUT_MSBS                 0x72
116 #define SAA7127_REG_TTX_REQUEST_H_START              0x73
117 #define SAA7127_REG_TTX_REQUEST_H_DELAY_LENGTH       0x74
118 #define SAA7127_REG_CSYNC_ADVANCE_VSYNC_SHIFT        0x75
119 #define SAA7127_REG_TTX_ODD_REQ_VERT_START           0x76
120 #define SAA7127_REG_TTX_ODD_REQ_VERT_END             0x77
121 #define SAA7127_REG_TTX_EVEN_REQ_VERT_START          0x78
122 #define SAA7127_REG_TTX_EVEN_REQ_VERT_END            0x79
123 #define SAA7127_REG_FIRST_ACTIVE                     0x7a
124 #define SAA7127_REG_LAST_ACTIVE                      0x7b
125 #define SAA7127_REG_MSB_VERTICAL                     0x7c
126 #define SAA7127_REG_DISABLE_TTX_LINE_LO_0            0x7e
127 #define SAA7127_REG_DISABLE_TTX_LINE_LO_1            0x7f
128
129 /*
130  **********************************************************************
131  *
132  *  Arrays with configuration parameters for the SAA7127
133  *
134  **********************************************************************
135  */
136
137 struct i2c_reg_value {
138         unsigned char reg;
139         unsigned char value;
140 };
141
142 static const struct i2c_reg_value saa7129_init_config_extra[] = {
143         { SAA7127_REG_OUTPUT_PORT_CONTROL,              0x38 },
144         { SAA7127_REG_VTRIG,                            0xfa },
145         { 0, 0 }
146 };
147
148 static const struct i2c_reg_value saa7127_init_config_common[] = {
149         { SAA7127_REG_WIDESCREEN_CONFIG,                0x0d },
150         { SAA7127_REG_WIDESCREEN_ENABLE,                0x00 },
151         { SAA7127_REG_COPYGEN_0,                        0x77 },
152         { SAA7127_REG_COPYGEN_1,                        0x41 },
153         { SAA7127_REG_COPYGEN_2,                        0x00 }, /* Macrovision enable/disable */
154         { SAA7127_REG_OUTPUT_PORT_CONTROL,              0x9e },
155         { SAA7127_REG_GAIN_LUMINANCE_RGB,               0x00 },
156         { SAA7127_REG_GAIN_COLORDIFF_RGB,               0x00 },
157         { SAA7127_REG_INPUT_PORT_CONTROL_1,             0x80 }, /* for color bars */
158         { SAA7127_REG_LINE_21_ODD_0,                    0x77 },
159         { SAA7127_REG_LINE_21_ODD_1,                    0x41 },
160         { SAA7127_REG_LINE_21_EVEN_0,                   0x88 },
161         { SAA7127_REG_LINE_21_EVEN_1,                   0x41 },
162         { SAA7127_REG_RCV_PORT_CONTROL,                 0x12 },
163         { SAA7127_REG_VTRIG,                            0xf9 },
164         { SAA7127_REG_HTRIG_HI,                         0x00 },
165         { SAA7127_REG_RCV2_OUTPUT_START,                0x41 },
166         { SAA7127_REG_RCV2_OUTPUT_END,                  0xc3 },
167         { SAA7127_REG_RCV2_OUTPUT_MSBS,                 0x00 },
168         { SAA7127_REG_TTX_REQUEST_H_START,              0x3e },
169         { SAA7127_REG_TTX_REQUEST_H_DELAY_LENGTH,       0xb8 },
170         { SAA7127_REG_CSYNC_ADVANCE_VSYNC_SHIFT,        0x03 },
171         { SAA7127_REG_TTX_ODD_REQ_VERT_START,           0x15 },
172         { SAA7127_REG_TTX_ODD_REQ_VERT_END,             0x16 },
173         { SAA7127_REG_TTX_EVEN_REQ_VERT_START,          0x15 },
174         { SAA7127_REG_TTX_EVEN_REQ_VERT_END,            0x16 },
175         { SAA7127_REG_FIRST_ACTIVE,                     0x1a },
176         { SAA7127_REG_LAST_ACTIVE,                      0x01 },
177         { SAA7127_REG_MSB_VERTICAL,                     0xc0 },
178         { SAA7127_REG_DISABLE_TTX_LINE_LO_0,            0x00 },
179         { SAA7127_REG_DISABLE_TTX_LINE_LO_1,            0x00 },
180         { 0, 0 }
181 };
182
183 #define SAA7127_60HZ_DAC_CONTROL 0x15
184 static const struct i2c_reg_value saa7127_init_config_60hz[] = {
185         { SAA7127_REG_BURST_START,                      0x19 },
186         /* BURST_END is also used as a chip ID in saa7127_detect_client */
187         { SAA7127_REG_BURST_END,                        0x1d },
188         { SAA7127_REG_CHROMA_PHASE,                     0xa3 },
189         { SAA7127_REG_GAINU,                            0x98 },
190         { SAA7127_REG_GAINV,                            0xd3 },
191         { SAA7127_REG_BLACK_LEVEL,                      0x39 },
192         { SAA7127_REG_BLANKING_LEVEL,                   0x2e },
193         { SAA7127_REG_VBI_BLANKING,                     0x2e },
194         { SAA7127_REG_DAC_CONTROL,                      0x15 },
195         { SAA7127_REG_BURST_AMP,                        0x4d },
196         { SAA7127_REG_SUBC3,                            0x1f },
197         { SAA7127_REG_SUBC2,                            0x7c },
198         { SAA7127_REG_SUBC1,                            0xf0 },
199         { SAA7127_REG_SUBC0,                            0x21 },
200         { SAA7127_REG_MULTI,                            0x90 },
201         { SAA7127_REG_CLOSED_CAPTION,                   0x11 },
202         { 0, 0 }
203 };
204
205 #define SAA7127_50HZ_DAC_CONTROL 0x02
206 static struct i2c_reg_value saa7127_init_config_50hz[] = {
207         { SAA7127_REG_BURST_START,                      0x21 },
208         /* BURST_END is also used as a chip ID in saa7127_detect_client */
209         { SAA7127_REG_BURST_END,                        0x1d },
210         { SAA7127_REG_CHROMA_PHASE,                     0x3f },
211         { SAA7127_REG_GAINU,                            0x7d },
212         { SAA7127_REG_GAINV,                            0xaf },
213         { SAA7127_REG_BLACK_LEVEL,                      0x33 },
214         { SAA7127_REG_BLANKING_LEVEL,                   0x35 },
215         { SAA7127_REG_VBI_BLANKING,                     0x35 },
216         { SAA7127_REG_DAC_CONTROL,                      0x02 },
217         { SAA7127_REG_BURST_AMP,                        0x2f },
218         { SAA7127_REG_SUBC3,                            0xcb },
219         { SAA7127_REG_SUBC2,                            0x8a },
220         { SAA7127_REG_SUBC1,                            0x09 },
221         { SAA7127_REG_SUBC0,                            0x2a },
222         { SAA7127_REG_MULTI,                            0xa0 },
223         { SAA7127_REG_CLOSED_CAPTION,                   0x00 },
224         { 0, 0 }
225 };
226
227 /*
228  **********************************************************************
229  *
230  *  Encoder Struct, holds the configuration state of the encoder
231  *
232  **********************************************************************
233  */
234
235 struct saa7127_state {
236         v4l2_std_id std;
237         enum v4l2_chip_ident ident;
238         enum saa7127_input_type input_type;
239         enum saa7127_output_type output_type;
240         int video_enable;
241         int wss_enable;
242         u16 wss_mode;
243         int cc_enable;
244         u16 cc_data;
245         int xds_enable;
246         u16 xds_data;
247         int vps_enable;
248         u8 vps_data[5];
249         u8 reg_2d;
250         u8 reg_3a;
251         u8 reg_3a_cb;   /* colorbar bit */
252         u8 reg_61;
253 };
254
255 static const char * const output_strs[] =
256 {
257         "S-Video + Composite",
258         "Composite",
259         "S-Video",
260         "RGB",
261         "YUV C",
262         "YUV V"
263 };
264
265 static const char * const wss_strs[] = {
266         "invalid",
267         "letterbox 14:9 center",
268         "letterbox 14:9 top",
269         "invalid",
270         "letterbox 16:9 top",
271         "invalid",
272         "invalid",
273         "16:9 full format anamorphic",
274         "4:3 full format",
275         "invalid",
276         "invalid",
277         "letterbox 16:9 center",
278         "invalid",
279         "letterbox >16:9 center",
280         "14:9 full format center",
281         "invalid",
282 };
283
284 /* ----------------------------------------------------------------------- */
285
286 static int saa7127_read(struct i2c_client *client, u8 reg)
287 {
288         return i2c_smbus_read_byte_data(client, reg);
289 }
290
291 /* ----------------------------------------------------------------------- */
292
293 static int saa7127_write(struct i2c_client *client, u8 reg, u8 val)
294 {
295         int i;
296
297         for (i = 0; i < 3; i++) {
298                 if (i2c_smbus_write_byte_data(client, reg, val) == 0)
299                         return 0;
300         }
301         v4l_err(client, "I2C Write Problem\n");
302         return -1;
303 }
304
305 /* ----------------------------------------------------------------------- */
306
307 static int saa7127_write_inittab(struct i2c_client *client,
308                                  const struct i2c_reg_value *regs)
309 {
310         while (regs->reg != 0) {
311                 saa7127_write(client, regs->reg, regs->value);
312                 regs++;
313         }
314         return 0;
315 }
316
317 /* ----------------------------------------------------------------------- */
318
319 static int saa7127_set_vps(struct i2c_client *client, struct v4l2_sliced_vbi_data *data)
320 {
321         struct saa7127_state *state = i2c_get_clientdata(client);
322         int enable = (data->line != 0);
323
324         if (enable && (data->field != 0 || data->line != 16))
325                 return -EINVAL;
326         if (state->vps_enable != enable) {
327                 v4l_dbg(1, debug, client, "Turn VPS Signal %s\n", enable ? "on" : "off");
328                 saa7127_write(client, 0x54, enable << 7);
329                 state->vps_enable = enable;
330         }
331         if (!enable)
332                 return 0;
333
334         state->vps_data[0] = data->data[4];
335         state->vps_data[1] = data->data[10];
336         state->vps_data[2] = data->data[11];
337         state->vps_data[3] = data->data[12];
338         state->vps_data[4] = data->data[13];
339         v4l_dbg(1, debug, client, "Set VPS data %02x %02x %02x %02x %02x\n",
340                 state->vps_data[0], state->vps_data[1],
341                 state->vps_data[2], state->vps_data[3],
342                 state->vps_data[4]);
343         saa7127_write(client, 0x55, state->vps_data[0]);
344         saa7127_write(client, 0x56, state->vps_data[1]);
345         saa7127_write(client, 0x57, state->vps_data[2]);
346         saa7127_write(client, 0x58, state->vps_data[3]);
347         saa7127_write(client, 0x59, state->vps_data[4]);
348         return 0;
349 }
350
351 /* ----------------------------------------------------------------------- */
352
353 static int saa7127_set_cc(struct i2c_client *client, struct v4l2_sliced_vbi_data *data)
354 {
355         struct saa7127_state *state = i2c_get_clientdata(client);
356         u16 cc = data->data[1] << 8 | data->data[0];
357         int enable = (data->line != 0);
358
359         if (enable && (data->field != 0 || data->line != 21))
360                 return -EINVAL;
361         if (state->cc_enable != enable) {
362                 v4l_dbg(1, debug, client, "Turn CC %s\n", enable ? "on" : "off");
363                 saa7127_write(client, SAA7127_REG_CLOSED_CAPTION,
364                                 (state->xds_enable << 7) | (enable << 6) | 0x11);
365                 state->cc_enable = enable;
366         }
367         if (!enable)
368                 return 0;
369
370         v4l_dbg(2, debug, client, "CC data: %04x\n", cc);
371         saa7127_write(client, SAA7127_REG_LINE_21_ODD_0, cc & 0xff);
372         saa7127_write(client, SAA7127_REG_LINE_21_ODD_1, cc >> 8);
373         state->cc_data = cc;
374         return 0;
375 }
376
377 /* ----------------------------------------------------------------------- */
378
379 static int saa7127_set_xds(struct i2c_client *client, struct v4l2_sliced_vbi_data *data)
380 {
381         struct saa7127_state *state = i2c_get_clientdata(client);
382         u16 xds = data->data[1] << 8 | data->data[0];
383         int enable = (data->line != 0);
384
385         if (enable && (data->field != 1 || data->line != 21))
386                 return -EINVAL;
387         if (state->xds_enable != enable) {
388                 v4l_dbg(1, debug, client, "Turn XDS %s\n", enable ? "on" : "off");
389                 saa7127_write(client, SAA7127_REG_CLOSED_CAPTION,
390                                 (enable << 7) | (state->cc_enable << 6) | 0x11);
391                 state->xds_enable = enable;
392         }
393         if (!enable)
394                 return 0;
395
396         v4l_dbg(2, debug, client, "XDS data: %04x\n", xds);
397         saa7127_write(client, SAA7127_REG_LINE_21_EVEN_0, xds & 0xff);
398         saa7127_write(client, SAA7127_REG_LINE_21_EVEN_1, xds >> 8);
399         state->xds_data = xds;
400         return 0;
401 }
402
403 /* ----------------------------------------------------------------------- */
404
405 static int saa7127_set_wss(struct i2c_client *client, struct v4l2_sliced_vbi_data *data)
406 {
407         struct saa7127_state *state = i2c_get_clientdata(client);
408         int enable = (data->line != 0);
409
410         if (enable && (data->field != 0 || data->line != 23))
411                 return -EINVAL;
412         if (state->wss_enable != enable) {
413                 v4l_dbg(1, debug, client, "Turn WSS %s\n", enable ? "on" : "off");
414                 saa7127_write(client, 0x27, enable << 7);
415                 state->wss_enable = enable;
416         }
417         if (!enable)
418                 return 0;
419
420         saa7127_write(client, 0x26, data->data[0]);
421         saa7127_write(client, 0x27, 0x80 | (data->data[1] & 0x3f));
422         v4l_dbg(1, debug, client, "WSS mode: %s\n", wss_strs[data->data[0] & 0xf]);
423         state->wss_mode = (data->data[1] & 0x3f) << 8 | data->data[0];
424         return 0;
425 }
426
427 /* ----------------------------------------------------------------------- */
428
429 static int saa7127_set_video_enable(struct i2c_client *client, int enable)
430 {
431         struct saa7127_state *state = i2c_get_clientdata(client);
432
433         if (enable) {
434                 v4l_dbg(1, debug, client, "Enable Video Output\n");
435                 saa7127_write(client, 0x2d, state->reg_2d);
436                 saa7127_write(client, 0x61, state->reg_61);
437         } else {
438                 v4l_dbg(1, debug, client, "Disable Video Output\n");
439                 saa7127_write(client, 0x2d, (state->reg_2d & 0xf0));
440                 saa7127_write(client, 0x61, (state->reg_61 | 0xc0));
441         }
442         state->video_enable = enable;
443         return 0;
444 }
445
446 /* ----------------------------------------------------------------------- */
447
448 static int saa7127_set_std(struct i2c_client *client, v4l2_std_id std)
449 {
450         struct saa7127_state *state = i2c_get_clientdata(client);
451         const struct i2c_reg_value *inittab;
452
453         if (std & V4L2_STD_525_60) {
454                 v4l_dbg(1, debug, client, "Selecting 60 Hz video Standard\n");
455                 inittab = saa7127_init_config_60hz;
456                 state->reg_61 = SAA7127_60HZ_DAC_CONTROL;
457         } else {
458                 v4l_dbg(1, debug, client, "Selecting 50 Hz video Standard\n");
459                 inittab = saa7127_init_config_50hz;
460                 state->reg_61 = SAA7127_50HZ_DAC_CONTROL;
461         }
462
463         /* Write Table */
464         saa7127_write_inittab(client, inittab);
465         state->std = std;
466         return 0;
467 }
468
469 /* ----------------------------------------------------------------------- */
470
471 static int saa7127_set_output_type(struct i2c_client *client, int output)
472 {
473         struct saa7127_state *state = i2c_get_clientdata(client);
474
475         switch (output) {
476         case SAA7127_OUTPUT_TYPE_RGB:
477                 state->reg_2d = 0x0f;   /* RGB + CVBS (for sync) */
478                 state->reg_3a = 0x13;   /* by default switch YUV to RGB-matrix on */
479                 break;
480
481         case SAA7127_OUTPUT_TYPE_COMPOSITE:
482                 state->reg_2d = 0x08;   /* 00001000 CVBS only, RGB DAC's off (high impedance mode) */
483                 state->reg_3a = 0x13;   /* by default switch YUV to RGB-matrix on */
484                 break;
485
486         case SAA7127_OUTPUT_TYPE_SVIDEO:
487                 state->reg_2d = 0xff;   /* 11111111  croma -> R, luma -> CVBS + G + B */
488                 state->reg_3a = 0x13;   /* by default switch YUV to RGB-matrix on */
489                 break;
490
491         case SAA7127_OUTPUT_TYPE_YUV_V:
492                 state->reg_2d = 0x4f;   /* reg 2D = 01001111, all DAC's on, RGB + VBS */
493                 state->reg_3a = 0x0b;   /* reg 3A = 00001011, bypass RGB-matrix */
494                 break;
495
496         case SAA7127_OUTPUT_TYPE_YUV_C:
497                 state->reg_2d = 0x0f;   /* reg 2D = 00001111, all DAC's on, RGB + CVBS */
498                 state->reg_3a = 0x0b;   /* reg 3A = 00001011, bypass RGB-matrix */
499                 break;
500
501         case SAA7127_OUTPUT_TYPE_BOTH:
502                 state->reg_2d = 0xbf;
503                 state->reg_3a = 0x13;   /* by default switch YUV to RGB-matrix on */
504                 break;
505
506         default:
507                 return -EINVAL;
508         }
509         v4l_dbg(1, debug, client, "Selecting %s output type\n", output_strs[output]);
510
511         /* Configure Encoder */
512         saa7127_write(client, 0x2d, state->reg_2d);
513         saa7127_write(client, 0x3a, state->reg_3a | state->reg_3a_cb);
514         state->output_type = output;
515         return 0;
516 }
517
518 /* ----------------------------------------------------------------------- */
519
520 static int saa7127_set_input_type(struct i2c_client *client, int input)
521 {
522         struct saa7127_state *state = i2c_get_clientdata(client);
523
524         switch (input) {
525         case SAA7127_INPUT_TYPE_NORMAL: /* avia */
526                 v4l_dbg(1, debug, client, "Selecting Normal Encoder Input\n");
527                 state->reg_3a_cb = 0;
528                 break;
529
530         case SAA7127_INPUT_TYPE_TEST_IMAGE:     /* color bar */
531                 v4l_dbg(1, debug, client, "Selecting Color Bar generator\n");
532                 state->reg_3a_cb = 0x80;
533                 break;
534
535         default:
536                 return -EINVAL;
537         }
538         saa7127_write(client, 0x3a, state->reg_3a | state->reg_3a_cb);
539         state->input_type = input;
540         return 0;
541 }
542
543 /* ----------------------------------------------------------------------- */
544
545 static int saa7127_command(struct i2c_client *client,
546                            unsigned int cmd, void *arg)
547 {
548         struct saa7127_state *state = i2c_get_clientdata(client);
549         struct v4l2_format *fmt = arg;
550         struct v4l2_routing *route = arg;
551
552         switch (cmd) {
553         case VIDIOC_S_STD:
554                 if (state->std == *(v4l2_std_id *)arg)
555                         break;
556                 return saa7127_set_std(client, *(v4l2_std_id *)arg);
557
558         case VIDIOC_G_STD:
559                 *(v4l2_std_id *)arg = state->std;
560                 break;
561
562         case VIDIOC_INT_G_VIDEO_ROUTING:
563                 route->input = state->input_type;
564                 route->output = state->output_type;
565                 break;
566
567         case VIDIOC_INT_S_VIDEO_ROUTING:
568         {
569                 int rc = 0;
570
571                 if (state->input_type != route->input) {
572                         rc = saa7127_set_input_type(client, route->input);
573                 }
574                 if (rc == 0 && state->output_type != route->output) {
575                         rc = saa7127_set_output_type(client, route->output);
576                 }
577                 return rc;
578         }
579
580         case VIDIOC_STREAMON:
581         case VIDIOC_STREAMOFF:
582                 if (state->video_enable == (cmd == VIDIOC_STREAMON))
583                         break;
584                 return saa7127_set_video_enable(client, cmd == VIDIOC_STREAMON);
585
586         case VIDIOC_G_FMT:
587                 if (fmt->type != V4L2_BUF_TYPE_SLICED_VBI_CAPTURE)
588                         return -EINVAL;
589
590                 memset(&fmt->fmt.sliced, 0, sizeof(fmt->fmt.sliced));
591                 if (state->vps_enable)
592                         fmt->fmt.sliced.service_lines[0][16] = V4L2_SLICED_VPS;
593                 if (state->wss_enable)
594                         fmt->fmt.sliced.service_lines[0][23] = V4L2_SLICED_WSS_625;
595                 if (state->cc_enable) {
596                         fmt->fmt.sliced.service_lines[0][21] = V4L2_SLICED_CAPTION_525;
597                         fmt->fmt.sliced.service_lines[1][21] = V4L2_SLICED_CAPTION_525;
598                 }
599                 fmt->fmt.sliced.service_set =
600                         (state->vps_enable ? V4L2_SLICED_VPS : 0) |
601                         (state->wss_enable ? V4L2_SLICED_WSS_625 : 0) |
602                         (state->cc_enable ? V4L2_SLICED_CAPTION_525 : 0);
603                 break;
604
605         case VIDIOC_LOG_STATUS:
606                 v4l_info(client, "Standard: %s\n", (state->std & V4L2_STD_525_60) ? "60 Hz" : "50 Hz");
607                 v4l_info(client, "Input:    %s\n", state->input_type ?  "color bars" : "normal");
608                 v4l_info(client, "Output:   %s\n", state->video_enable ?
609                         output_strs[state->output_type] : "disabled");
610                 v4l_info(client, "WSS:      %s\n", state->wss_enable ?
611                         wss_strs[state->wss_mode] : "disabled");
612                 v4l_info(client, "VPS:      %s\n", state->vps_enable ? "enabled" : "disabled");
613                 v4l_info(client, "CC:       %s\n", state->cc_enable ? "enabled" : "disabled");
614                 break;
615
616 #ifdef CONFIG_VIDEO_ADV_DEBUG
617         case VIDIOC_DBG_G_REGISTER:
618         case VIDIOC_DBG_S_REGISTER:
619         {
620                 struct v4l2_register *reg = arg;
621
622                 if (!v4l2_chip_match_i2c_client(client, reg->match_type, reg->match_chip))
623                         return -EINVAL;
624                 if (!capable(CAP_SYS_ADMIN))
625                         return -EPERM;
626                 if (cmd == VIDIOC_DBG_G_REGISTER)
627                         reg->val = saa7127_read(client, reg->reg & 0xff);
628                 else
629                         saa7127_write(client, reg->reg & 0xff, reg->val & 0xff);
630                 break;
631         }
632 #endif
633
634         case VIDIOC_INT_S_VBI_DATA:
635         {
636                 struct v4l2_sliced_vbi_data *data = arg;
637
638                 switch (data->id) {
639                         case V4L2_SLICED_WSS_625:
640                                 return saa7127_set_wss(client, data);
641                         case V4L2_SLICED_VPS:
642                                 return saa7127_set_vps(client, data);
643                         case V4L2_SLICED_CAPTION_525:
644                                 if (data->field == 0)
645                                         return saa7127_set_cc(client, data);
646                                 return saa7127_set_xds(client, data);
647                         default:
648                                 return -EINVAL;
649                 }
650                 break;
651         }
652
653         case VIDIOC_INT_G_CHIP_IDENT:
654                 *(enum v4l2_chip_ident *)arg = state->ident;
655                 break;
656
657         default:
658                 return -EINVAL;
659         }
660         return 0;
661 }
662
663 /* ----------------------------------------------------------------------- */
664
665 static struct i2c_driver i2c_driver_saa7127;
666
667 /* ----------------------------------------------------------------------- */
668
669 static int saa7127_attach(struct i2c_adapter *adapter, int address, int kind)
670 {
671         struct i2c_client *client;
672         struct saa7127_state *state;
673         struct v4l2_sliced_vbi_data vbi = { 0, 0, 0, 0 };  /* set to disabled */
674         int read_result = 0;
675
676         /* Check if the adapter supports the needed features */
677         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
678                 return 0;
679
680         client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
681         if (client == 0)
682                 return -ENOMEM;
683
684         client->addr = address;
685         client->adapter = adapter;
686         client->driver = &i2c_driver_saa7127;
687         snprintf(client->name, sizeof(client->name) - 1, "saa7127");
688
689         v4l_dbg(1, debug, client, "detecting saa7127 client on address 0x%x\n", address << 1);
690
691         /* First test register 0: Bits 5-7 are a version ID (should be 0),
692            and bit 2 should also be 0.
693            This is rather general, so the second test is more specific and
694            looks at the 'ending point of burst in clock cycles' which is
695            0x1d after a reset and not expected to ever change. */
696         if ((saa7127_read(client, 0) & 0xe4) != 0 ||
697                         (saa7127_read(client, 0x29) & 0x3f) != 0x1d) {
698                 v4l_dbg(1, debug, client, "saa7127 not found\n");
699                 kfree(client);
700                 return 0;
701         }
702         state = kzalloc(sizeof(struct saa7127_state), GFP_KERNEL);
703
704         if (state == NULL) {
705                 kfree(client);
706                 return (-ENOMEM);
707         }
708
709         i2c_set_clientdata(client, state);
710
711         /* Configure Encoder */
712
713         v4l_dbg(1, debug, client, "Configuring encoder\n");
714         saa7127_write_inittab(client, saa7127_init_config_common);
715         saa7127_set_std(client, V4L2_STD_NTSC);
716         saa7127_set_output_type(client, SAA7127_OUTPUT_TYPE_BOTH);
717         saa7127_set_vps(client, &vbi);
718         saa7127_set_wss(client, &vbi);
719         saa7127_set_cc(client, &vbi);
720         saa7127_set_xds(client, &vbi);
721         if (test_image == 1) {
722                 /* The Encoder has an internal Colorbar generator */
723                 /* This can be used for debugging */
724                 saa7127_set_input_type(client, SAA7127_INPUT_TYPE_TEST_IMAGE);
725         } else {
726                 saa7127_set_input_type(client, SAA7127_INPUT_TYPE_NORMAL);
727         }
728         saa7127_set_video_enable(client, 1);
729
730         /* Detect if it's an saa7129 */
731         read_result = saa7127_read(client, SAA7129_REG_FADE_KEY_COL2);
732         saa7127_write(client, SAA7129_REG_FADE_KEY_COL2, 0xaa);
733         if (saa7127_read(client, SAA7129_REG_FADE_KEY_COL2) == 0xaa) {
734                 v4l_info(client, "saa7129 found @ 0x%x (%s)\n", address << 1, adapter->name);
735                 saa7127_write(client, SAA7129_REG_FADE_KEY_COL2, read_result);
736                 saa7127_write_inittab(client, saa7129_init_config_extra);
737                 state->ident = V4L2_IDENT_SAA7129;
738         } else {
739                 v4l_info(client, "saa7127 found @ 0x%x (%s)\n", address << 1, adapter->name);
740                 state->ident = V4L2_IDENT_SAA7127;
741         }
742
743         i2c_attach_client(client);
744
745         return 0;
746 }
747
748 /* ----------------------------------------------------------------------- */
749
750 static int saa7127_probe(struct i2c_adapter *adapter)
751 {
752         if (adapter->class & I2C_CLASS_TV_ANALOG)
753                 return i2c_probe(adapter, &addr_data, saa7127_attach);
754         return 0;
755 }
756
757 /* ----------------------------------------------------------------------- */
758
759 static int saa7127_detach(struct i2c_client *client)
760 {
761         struct saa7127_state *state = i2c_get_clientdata(client);
762         int err;
763
764         /* Turn off TV output */
765         saa7127_set_video_enable(client, 0);
766
767         err = i2c_detach_client(client);
768
769         if (err) {
770                 return err;
771         }
772
773         kfree(state);
774         kfree(client);
775         return 0;
776 }
777
778 /* ----------------------------------------------------------------------- */
779
780 static struct i2c_driver i2c_driver_saa7127 = {
781         .driver = {
782                 .name = "saa7127",
783         },
784         .id = I2C_DRIVERID_SAA7127,
785         .attach_adapter = saa7127_probe,
786         .detach_client = saa7127_detach,
787         .command = saa7127_command,
788 };
789
790
791 /* ----------------------------------------------------------------------- */
792
793 static int __init saa7127_init_module(void)
794 {
795         return i2c_add_driver(&i2c_driver_saa7127);
796 }
797
798 /* ----------------------------------------------------------------------- */
799
800 static void __exit saa7127_cleanup_module(void)
801 {
802         i2c_del_driver(&i2c_driver_saa7127);
803 }
804
805 /* ----------------------------------------------------------------------- */
806
807 module_init(saa7127_init_module);
808 module_exit(saa7127_cleanup_module);