1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * saa7127 - Philips SAA7127/SAA7129 video encoder driver
4 *
5 * Copyright (C) 2003 Roy Bulter <rbulter@hetnet.nl>
6 *
7 * Based on SAA7126 video encoder driver by Gillem & Andreas Oberritter
8 *
9 * Copyright (C) 2000-2001 Gillem <htoa@gmx.net>
10 * Copyright (C) 2002 Andreas Oberritter <obi@saftware.de>
11 *
12 * Based on Stadis 4:2:2 MPEG-2 Decoder Driver by Nathan Laredo
13 *
14 * Copyright (C) 1999 Nathan Laredo <laredo@gnu.org>
15 *
16 * This driver is designed for the Hauppauge 250/350 Linux driver
17 * from the ivtv Project
18 *
19 * Copyright (C) 2003 Kevin Thayer <nufan_wfk@yahoo.com>
20 *
21 * Dual output support:
22 * Copyright (C) 2004 Eric Varsanyi
23 *
24 * NTSC Tuning and 7.5 IRE Setup
25 * Copyright (C) 2004 Chris Kennedy <c@groovy.org>
26 *
27 * VBI additions & cleanup:
28 * Copyright (C) 2004, 2005 Hans Verkuil <hverkuil@xs4all.nl>
29 *
30 * Note: the saa7126 is identical to the saa7127, and the saa7128 is
31 * identical to the saa7129, except that the saa7126 and saa7128 have
32 * macrovision anti-taping support. This driver will almost certainly
33 * work fine for those chips, except of course for the missing anti-taping
34 * support.
35 */
36
37
38 #include <linux/kernel.h>
39 #include <linux/module.h>
40 #include <linux/slab.h>
41 #include <linux/i2c.h>
42 #include <linux/videodev2.h>
43 #include <media/v4l2-device.h>
44 #include <media/i2c/saa7127.h>
45
46 static int debug;
47 static int test_image;
48
49 MODULE_DESCRIPTION("Philips SAA7127/9 video encoder driver");
50 MODULE_AUTHOR("Kevin Thayer, Chris Kennedy, Hans Verkuil");
51 MODULE_LICENSE("GPL");
52 module_param(debug, int, 0644);
53 module_param(test_image, int, 0644);
54 MODULE_PARM_DESC(debug, "debug level (0-2)");
55 MODULE_PARM_DESC(test_image, "test_image (0-1)");
56
57
58 /*
59 * SAA7127 registers
60 */
61
62 #define SAA7127_REG_STATUS 0x00
63 #define SAA7127_REG_WIDESCREEN_CONFIG 0x26
64 #define SAA7127_REG_WIDESCREEN_ENABLE 0x27
65 #define SAA7127_REG_BURST_START 0x28
66 #define SAA7127_REG_BURST_END 0x29
67 #define SAA7127_REG_COPYGEN_0 0x2a
68 #define SAA7127_REG_COPYGEN_1 0x2b
69 #define SAA7127_REG_COPYGEN_2 0x2c
70 #define SAA7127_REG_OUTPUT_PORT_CONTROL 0x2d
71 #define SAA7127_REG_GAIN_LUMINANCE_RGB 0x38
72 #define SAA7127_REG_GAIN_COLORDIFF_RGB 0x39
73 #define SAA7127_REG_INPUT_PORT_CONTROL_1 0x3a
74 #define SAA7129_REG_FADE_KEY_COL2 0x4f
75 #define SAA7127_REG_CHROMA_PHASE 0x5a
76 #define SAA7127_REG_GAINU 0x5b
77 #define SAA7127_REG_GAINV 0x5c
78 #define SAA7127_REG_BLACK_LEVEL 0x5d
79 #define SAA7127_REG_BLANKING_LEVEL 0x5e
80 #define SAA7127_REG_VBI_BLANKING 0x5f
81 #define SAA7127_REG_DAC_CONTROL 0x61
82 #define SAA7127_REG_BURST_AMP 0x62
83 #define SAA7127_REG_SUBC3 0x63
84 #define SAA7127_REG_SUBC2 0x64
85 #define SAA7127_REG_SUBC1 0x65
86 #define SAA7127_REG_SUBC0 0x66
87 #define SAA7127_REG_LINE_21_ODD_0 0x67
88 #define SAA7127_REG_LINE_21_ODD_1 0x68
89 #define SAA7127_REG_LINE_21_EVEN_0 0x69
90 #define SAA7127_REG_LINE_21_EVEN_1 0x6a
91 #define SAA7127_REG_RCV_PORT_CONTROL 0x6b
92 #define SAA7127_REG_VTRIG 0x6c
93 #define SAA7127_REG_HTRIG_HI 0x6d
94 #define SAA7127_REG_MULTI 0x6e
95 #define SAA7127_REG_CLOSED_CAPTION 0x6f
96 #define SAA7127_REG_RCV2_OUTPUT_START 0x70
97 #define SAA7127_REG_RCV2_OUTPUT_END 0x71
98 #define SAA7127_REG_RCV2_OUTPUT_MSBS 0x72
99 #define SAA7127_REG_TTX_REQUEST_H_START 0x73
100 #define SAA7127_REG_TTX_REQUEST_H_DELAY_LENGTH 0x74
101 #define SAA7127_REG_CSYNC_ADVANCE_VSYNC_SHIFT 0x75
102 #define SAA7127_REG_TTX_ODD_REQ_VERT_START 0x76
103 #define SAA7127_REG_TTX_ODD_REQ_VERT_END 0x77
104 #define SAA7127_REG_TTX_EVEN_REQ_VERT_START 0x78
105 #define SAA7127_REG_TTX_EVEN_REQ_VERT_END 0x79
106 #define SAA7127_REG_FIRST_ACTIVE 0x7a
107 #define SAA7127_REG_LAST_ACTIVE 0x7b
108 #define SAA7127_REG_MSB_VERTICAL 0x7c
109 #define SAA7127_REG_DISABLE_TTX_LINE_LO_0 0x7e
110 #define SAA7127_REG_DISABLE_TTX_LINE_LO_1 0x7f
111
112 /*
113 **********************************************************************
114 *
115 * Arrays with configuration parameters for the SAA7127
116 *
117 **********************************************************************
118 */
119
120 struct i2c_reg_value {
121 unsigned char reg;
122 unsigned char value;
123 };
124
125 static const struct i2c_reg_value saa7129_init_config_extra[] = {
126 { SAA7127_REG_OUTPUT_PORT_CONTROL, 0x38 },
127 { SAA7127_REG_VTRIG, 0xfa },
128 { 0, 0 }
129 };
130
131 static const struct i2c_reg_value saa7127_init_config_common[] = {
132 { SAA7127_REG_WIDESCREEN_CONFIG, 0x0d },
133 { SAA7127_REG_WIDESCREEN_ENABLE, 0x00 },
134 { SAA7127_REG_COPYGEN_0, 0x77 },
135 { SAA7127_REG_COPYGEN_1, 0x41 },
136 { SAA7127_REG_COPYGEN_2, 0x00 }, /* Macrovision enable/disable */
137 { SAA7127_REG_OUTPUT_PORT_CONTROL, 0xbf },
138 { SAA7127_REG_GAIN_LUMINANCE_RGB, 0x00 },
139 { SAA7127_REG_GAIN_COLORDIFF_RGB, 0x00 },
140 { SAA7127_REG_INPUT_PORT_CONTROL_1, 0x80 }, /* for color bars */
141 { SAA7127_REG_LINE_21_ODD_0, 0x77 },
142 { SAA7127_REG_LINE_21_ODD_1, 0x41 },
143 { SAA7127_REG_LINE_21_EVEN_0, 0x88 },
144 { SAA7127_REG_LINE_21_EVEN_1, 0x41 },
145 { SAA7127_REG_RCV_PORT_CONTROL, 0x12 },
146 { SAA7127_REG_VTRIG, 0xf9 },
147 { SAA7127_REG_HTRIG_HI, 0x00 },
148 { SAA7127_REG_RCV2_OUTPUT_START, 0x41 },
149 { SAA7127_REG_RCV2_OUTPUT_END, 0xc3 },
150 { SAA7127_REG_RCV2_OUTPUT_MSBS, 0x00 },
151 { SAA7127_REG_TTX_REQUEST_H_START, 0x3e },
152 { SAA7127_REG_TTX_REQUEST_H_DELAY_LENGTH, 0xb8 },
153 { SAA7127_REG_CSYNC_ADVANCE_VSYNC_SHIFT, 0x03 },
154 { SAA7127_REG_TTX_ODD_REQ_VERT_START, 0x15 },
155 { SAA7127_REG_TTX_ODD_REQ_VERT_END, 0x16 },
156 { SAA7127_REG_TTX_EVEN_REQ_VERT_START, 0x15 },
157 { SAA7127_REG_TTX_EVEN_REQ_VERT_END, 0x16 },
158 { SAA7127_REG_FIRST_ACTIVE, 0x1a },
159 { SAA7127_REG_LAST_ACTIVE, 0x01 },
160 { SAA7127_REG_MSB_VERTICAL, 0xc0 },
161 { SAA7127_REG_DISABLE_TTX_LINE_LO_0, 0x00 },
162 { SAA7127_REG_DISABLE_TTX_LINE_LO_1, 0x00 },
163 { 0, 0 }
164 };
165
166 #define SAA7127_60HZ_DAC_CONTROL 0x15
167 static const struct i2c_reg_value saa7127_init_config_60hz[] = {
168 { SAA7127_REG_BURST_START, 0x19 },
169 /* BURST_END is also used as a chip ID in saa7127_probe */
170 { SAA7127_REG_BURST_END, 0x1d },
171 { SAA7127_REG_CHROMA_PHASE, 0xa3 },
172 { SAA7127_REG_GAINU, 0x98 },
173 { SAA7127_REG_GAINV, 0xd3 },
174 { SAA7127_REG_BLACK_LEVEL, 0x39 },
175 { SAA7127_REG_BLANKING_LEVEL, 0x2e },
176 { SAA7127_REG_VBI_BLANKING, 0x2e },
177 { SAA7127_REG_DAC_CONTROL, 0x15 },
178 { SAA7127_REG_BURST_AMP, 0x4d },
179 { SAA7127_REG_SUBC3, 0x1f },
180 { SAA7127_REG_SUBC2, 0x7c },
181 { SAA7127_REG_SUBC1, 0xf0 },
182 { SAA7127_REG_SUBC0, 0x21 },
183 { SAA7127_REG_MULTI, 0x90 },
184 { SAA7127_REG_CLOSED_CAPTION, 0x11 },
185 { 0, 0 }
186 };
187
188 #define SAA7127_50HZ_PAL_DAC_CONTROL 0x02
189 static struct i2c_reg_value saa7127_init_config_50hz_pal[] = {
190 { SAA7127_REG_BURST_START, 0x21 },
191 /* BURST_END is also used as a chip ID in saa7127_probe */
192 { SAA7127_REG_BURST_END, 0x1d },
193 { SAA7127_REG_CHROMA_PHASE, 0x3f },
194 { SAA7127_REG_GAINU, 0x7d },
195 { SAA7127_REG_GAINV, 0xaf },
196 { SAA7127_REG_BLACK_LEVEL, 0x33 },
197 { SAA7127_REG_BLANKING_LEVEL, 0x35 },
198 { SAA7127_REG_VBI_BLANKING, 0x35 },
199 { SAA7127_REG_DAC_CONTROL, 0x02 },
200 { SAA7127_REG_BURST_AMP, 0x2f },
201 { SAA7127_REG_SUBC3, 0xcb },
202 { SAA7127_REG_SUBC2, 0x8a },
203 { SAA7127_REG_SUBC1, 0x09 },
204 { SAA7127_REG_SUBC0, 0x2a },
205 { SAA7127_REG_MULTI, 0xa0 },
206 { SAA7127_REG_CLOSED_CAPTION, 0x00 },
207 { 0, 0 }
208 };
209
210 #define SAA7127_50HZ_SECAM_DAC_CONTROL 0x08
211 static struct i2c_reg_value saa7127_init_config_50hz_secam[] = {
212 { SAA7127_REG_BURST_START, 0x21 },
213 /* BURST_END is also used as a chip ID in saa7127_probe */
214 { SAA7127_REG_BURST_END, 0x1d },
215 { SAA7127_REG_CHROMA_PHASE, 0x3f },
216 { SAA7127_REG_GAINU, 0x6a },
217 { SAA7127_REG_GAINV, 0x81 },
218 { SAA7127_REG_BLACK_LEVEL, 0x33 },
219 { SAA7127_REG_BLANKING_LEVEL, 0x35 },
220 { SAA7127_REG_VBI_BLANKING, 0x35 },
221 { SAA7127_REG_DAC_CONTROL, 0x08 },
222 { SAA7127_REG_BURST_AMP, 0x2f },
223 { SAA7127_REG_SUBC3, 0xb2 },
224 { SAA7127_REG_SUBC2, 0x3b },
225 { SAA7127_REG_SUBC1, 0xa3 },
226 { SAA7127_REG_SUBC0, 0x28 },
227 { SAA7127_REG_MULTI, 0x90 },
228 { SAA7127_REG_CLOSED_CAPTION, 0x00 },
229 { 0, 0 }
230 };
231
232 /*
233 **********************************************************************
234 *
235 * Encoder Struct, holds the configuration state of the encoder
236 *
237 **********************************************************************
238 */
239
240 enum saa712x_model {
241 SAA7127,
242 SAA7129,
243 };
244
245 struct saa7127_state {
246 struct v4l2_subdev sd;
247 v4l2_std_id std;
248 enum saa712x_model ident;
249 enum saa7127_input_type input_type;
250 enum saa7127_output_type output_type;
251 int video_enable;
252 int wss_enable;
253 u16 wss_mode;
254 int cc_enable;
255 u16 cc_data;
256 int xds_enable;
257 u16 xds_data;
258 int vps_enable;
259 u8 vps_data[5];
260 u8 reg_2d;
261 u8 reg_3a;
262 u8 reg_3a_cb; /* colorbar bit */
263 u8 reg_61;
264 };
265
to_state(struct v4l2_subdev * sd)266 static inline struct saa7127_state *to_state(struct v4l2_subdev *sd)
267 {
268 return container_of(sd, struct saa7127_state, sd);
269 }
270
271 static const char * const output_strs[] =
272 {
273 "S-Video + Composite",
274 "Composite",
275 "S-Video",
276 "RGB",
277 "YUV C",
278 "YUV V"
279 };
280
281 static const char * const wss_strs[] = {
282 "invalid",
283 "letterbox 14:9 center",
284 "letterbox 14:9 top",
285 "invalid",
286 "letterbox 16:9 top",
287 "invalid",
288 "invalid",
289 "16:9 full format anamorphic",
290 "4:3 full format",
291 "invalid",
292 "invalid",
293 "letterbox 16:9 center",
294 "invalid",
295 "letterbox >16:9 center",
296 "14:9 full format center",
297 "invalid",
298 };
299
300 /* ----------------------------------------------------------------------- */
301
saa7127_read(struct v4l2_subdev * sd,u8 reg)302 static int saa7127_read(struct v4l2_subdev *sd, u8 reg)
303 {
304 struct i2c_client *client = v4l2_get_subdevdata(sd);
305
306 return i2c_smbus_read_byte_data(client, reg);
307 }
308
309 /* ----------------------------------------------------------------------- */
310
saa7127_write(struct v4l2_subdev * sd,u8 reg,u8 val)311 static int saa7127_write(struct v4l2_subdev *sd, u8 reg, u8 val)
312 {
313 struct i2c_client *client = v4l2_get_subdevdata(sd);
314 int i;
315
316 for (i = 0; i < 3; i++) {
317 if (i2c_smbus_write_byte_data(client, reg, val) == 0)
318 return 0;
319 }
320 v4l2_err(sd, "I2C Write Problem\n");
321 return -1;
322 }
323
324 /* ----------------------------------------------------------------------- */
325
saa7127_write_inittab(struct v4l2_subdev * sd,const struct i2c_reg_value * regs)326 static int saa7127_write_inittab(struct v4l2_subdev *sd,
327 const struct i2c_reg_value *regs)
328 {
329 while (regs->reg != 0) {
330 saa7127_write(sd, regs->reg, regs->value);
331 regs++;
332 }
333 return 0;
334 }
335
336 /* ----------------------------------------------------------------------- */
337
saa7127_set_vps(struct v4l2_subdev * sd,const struct v4l2_sliced_vbi_data * data)338 static int saa7127_set_vps(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *data)
339 {
340 struct saa7127_state *state = to_state(sd);
341 int enable = (data->line != 0);
342
343 if (enable && (data->field != 0 || data->line != 16))
344 return -EINVAL;
345 if (state->vps_enable != enable) {
346 v4l2_dbg(1, debug, sd, "Turn VPS Signal %s\n", enable ? "on" : "off");
347 saa7127_write(sd, 0x54, enable << 7);
348 state->vps_enable = enable;
349 }
350 if (!enable)
351 return 0;
352
353 state->vps_data[0] = data->data[2];
354 state->vps_data[1] = data->data[8];
355 state->vps_data[2] = data->data[9];
356 state->vps_data[3] = data->data[10];
357 state->vps_data[4] = data->data[11];
358 v4l2_dbg(1, debug, sd, "Set VPS data %*ph\n", 5, state->vps_data);
359 saa7127_write(sd, 0x55, state->vps_data[0]);
360 saa7127_write(sd, 0x56, state->vps_data[1]);
361 saa7127_write(sd, 0x57, state->vps_data[2]);
362 saa7127_write(sd, 0x58, state->vps_data[3]);
363 saa7127_write(sd, 0x59, state->vps_data[4]);
364 return 0;
365 }
366
367 /* ----------------------------------------------------------------------- */
368
saa7127_set_cc(struct v4l2_subdev * sd,const struct v4l2_sliced_vbi_data * data)369 static int saa7127_set_cc(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *data)
370 {
371 struct saa7127_state *state = to_state(sd);
372 u16 cc = data->data[1] << 8 | data->data[0];
373 int enable = (data->line != 0);
374
375 if (enable && (data->field != 0 || data->line != 21))
376 return -EINVAL;
377 if (state->cc_enable != enable) {
378 v4l2_dbg(1, debug, sd,
379 "Turn CC %s\n", enable ? "on" : "off");
380 saa7127_write(sd, SAA7127_REG_CLOSED_CAPTION,
381 (state->xds_enable << 7) | (enable << 6) | 0x11);
382 state->cc_enable = enable;
383 }
384 if (!enable)
385 return 0;
386
387 v4l2_dbg(2, debug, sd, "CC data: %04x\n", cc);
388 saa7127_write(sd, SAA7127_REG_LINE_21_ODD_0, cc & 0xff);
389 saa7127_write(sd, SAA7127_REG_LINE_21_ODD_1, cc >> 8);
390 state->cc_data = cc;
391 return 0;
392 }
393
394 /* ----------------------------------------------------------------------- */
395
saa7127_set_xds(struct v4l2_subdev * sd,const struct v4l2_sliced_vbi_data * data)396 static int saa7127_set_xds(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *data)
397 {
398 struct saa7127_state *state = to_state(sd);
399 u16 xds = data->data[1] << 8 | data->data[0];
400 int enable = (data->line != 0);
401
402 if (enable && (data->field != 1 || data->line != 21))
403 return -EINVAL;
404 if (state->xds_enable != enable) {
405 v4l2_dbg(1, debug, sd, "Turn XDS %s\n", enable ? "on" : "off");
406 saa7127_write(sd, SAA7127_REG_CLOSED_CAPTION,
407 (enable << 7) | (state->cc_enable << 6) | 0x11);
408 state->xds_enable = enable;
409 }
410 if (!enable)
411 return 0;
412
413 v4l2_dbg(2, debug, sd, "XDS data: %04x\n", xds);
414 saa7127_write(sd, SAA7127_REG_LINE_21_EVEN_0, xds & 0xff);
415 saa7127_write(sd, SAA7127_REG_LINE_21_EVEN_1, xds >> 8);
416 state->xds_data = xds;
417 return 0;
418 }
419
420 /* ----------------------------------------------------------------------- */
421
saa7127_set_wss(struct v4l2_subdev * sd,const struct v4l2_sliced_vbi_data * data)422 static int saa7127_set_wss(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *data)
423 {
424 struct saa7127_state *state = to_state(sd);
425 int enable = (data->line != 0);
426
427 if (enable && (data->field != 0 || data->line != 23))
428 return -EINVAL;
429 if (state->wss_enable != enable) {
430 v4l2_dbg(1, debug, sd, "Turn WSS %s\n", enable ? "on" : "off");
431 saa7127_write(sd, 0x27, enable << 7);
432 state->wss_enable = enable;
433 }
434 if (!enable)
435 return 0;
436
437 saa7127_write(sd, 0x26, data->data[0]);
438 saa7127_write(sd, 0x27, 0x80 | (data->data[1] & 0x3f));
439 v4l2_dbg(1, debug, sd,
440 "WSS mode: %s\n", wss_strs[data->data[0] & 0xf]);
441 state->wss_mode = (data->data[1] & 0x3f) << 8 | data->data[0];
442 return 0;
443 }
444
445 /* ----------------------------------------------------------------------- */
446
saa7127_set_video_enable(struct v4l2_subdev * sd,int enable)447 static int saa7127_set_video_enable(struct v4l2_subdev *sd, int enable)
448 {
449 struct saa7127_state *state = to_state(sd);
450
451 if (enable) {
452 v4l2_dbg(1, debug, sd, "Enable Video Output\n");
453 saa7127_write(sd, 0x2d, state->reg_2d);
454 saa7127_write(sd, 0x61, state->reg_61);
455 } else {
456 v4l2_dbg(1, debug, sd, "Disable Video Output\n");
457 saa7127_write(sd, 0x2d, (state->reg_2d & 0xf0));
458 saa7127_write(sd, 0x61, (state->reg_61 | 0xc0));
459 }
460 state->video_enable = enable;
461 return 0;
462 }
463
464 /* ----------------------------------------------------------------------- */
465
saa7127_set_std(struct v4l2_subdev * sd,v4l2_std_id std)466 static int saa7127_set_std(struct v4l2_subdev *sd, v4l2_std_id std)
467 {
468 struct saa7127_state *state = to_state(sd);
469 const struct i2c_reg_value *inittab;
470
471 if (std & V4L2_STD_525_60) {
472 v4l2_dbg(1, debug, sd, "Selecting 60 Hz video Standard\n");
473 inittab = saa7127_init_config_60hz;
474 state->reg_61 = SAA7127_60HZ_DAC_CONTROL;
475
476 } else if (state->ident == SAA7129 &&
477 (std & V4L2_STD_SECAM) &&
478 !(std & (V4L2_STD_625_50 & ~V4L2_STD_SECAM))) {
479
480 /* If and only if SECAM, with a SAA712[89] */
481 v4l2_dbg(1, debug, sd,
482 "Selecting 50 Hz SECAM video Standard\n");
483 inittab = saa7127_init_config_50hz_secam;
484 state->reg_61 = SAA7127_50HZ_SECAM_DAC_CONTROL;
485
486 } else {
487 v4l2_dbg(1, debug, sd, "Selecting 50 Hz PAL video Standard\n");
488 inittab = saa7127_init_config_50hz_pal;
489 state->reg_61 = SAA7127_50HZ_PAL_DAC_CONTROL;
490 }
491
492 /* Write Table */
493 saa7127_write_inittab(sd, inittab);
494 state->std = std;
495 return 0;
496 }
497
498 /* ----------------------------------------------------------------------- */
499
saa7127_set_output_type(struct v4l2_subdev * sd,int output)500 static int saa7127_set_output_type(struct v4l2_subdev *sd, int output)
501 {
502 struct saa7127_state *state = to_state(sd);
503
504 switch (output) {
505 case SAA7127_OUTPUT_TYPE_RGB:
506 state->reg_2d = 0x0f; /* RGB + CVBS (for sync) */
507 state->reg_3a = 0x13; /* by default switch YUV to RGB-matrix on */
508 break;
509
510 case SAA7127_OUTPUT_TYPE_COMPOSITE:
511 if (state->ident == SAA7129)
512 state->reg_2d = 0x20; /* CVBS only */
513 else
514 state->reg_2d = 0x08; /* 00001000 CVBS only, RGB DAC's off (high impedance mode) */
515 state->reg_3a = 0x13; /* by default switch YUV to RGB-matrix on */
516 break;
517
518 case SAA7127_OUTPUT_TYPE_SVIDEO:
519 if (state->ident == SAA7129)
520 state->reg_2d = 0x18; /* Y + C */
521 else
522 state->reg_2d = 0xff; /*11111111 croma -> R, luma -> CVBS + G + B */
523 state->reg_3a = 0x13; /* by default switch YUV to RGB-matrix on */
524 break;
525
526 case SAA7127_OUTPUT_TYPE_YUV_V:
527 state->reg_2d = 0x4f; /* reg 2D = 01001111, all DAC's on, RGB + VBS */
528 state->reg_3a = 0x0b; /* reg 3A = 00001011, bypass RGB-matrix */
529 break;
530
531 case SAA7127_OUTPUT_TYPE_YUV_C:
532 state->reg_2d = 0x0f; /* reg 2D = 00001111, all DAC's on, RGB + CVBS */
533 state->reg_3a = 0x0b; /* reg 3A = 00001011, bypass RGB-matrix */
534 break;
535
536 case SAA7127_OUTPUT_TYPE_BOTH:
537 if (state->ident == SAA7129)
538 state->reg_2d = 0x38;
539 else
540 state->reg_2d = 0xbf;
541 state->reg_3a = 0x13; /* by default switch YUV to RGB-matrix on */
542 break;
543
544 default:
545 return -EINVAL;
546 }
547 v4l2_dbg(1, debug, sd,
548 "Selecting %s output type\n", output_strs[output]);
549
550 /* Configure Encoder */
551 saa7127_write(sd, 0x2d, state->reg_2d);
552 saa7127_write(sd, 0x3a, state->reg_3a | state->reg_3a_cb);
553 state->output_type = output;
554 return 0;
555 }
556
557 /* ----------------------------------------------------------------------- */
558
saa7127_set_input_type(struct v4l2_subdev * sd,int input)559 static int saa7127_set_input_type(struct v4l2_subdev *sd, int input)
560 {
561 struct saa7127_state *state = to_state(sd);
562
563 switch (input) {
564 case SAA7127_INPUT_TYPE_NORMAL: /* avia */
565 v4l2_dbg(1, debug, sd, "Selecting Normal Encoder Input\n");
566 state->reg_3a_cb = 0;
567 break;
568
569 case SAA7127_INPUT_TYPE_TEST_IMAGE: /* color bar */
570 v4l2_dbg(1, debug, sd, "Selecting Color Bar generator\n");
571 state->reg_3a_cb = 0x80;
572 break;
573
574 default:
575 return -EINVAL;
576 }
577 saa7127_write(sd, 0x3a, state->reg_3a | state->reg_3a_cb);
578 state->input_type = input;
579 return 0;
580 }
581
582 /* ----------------------------------------------------------------------- */
583
saa7127_s_std_output(struct v4l2_subdev * sd,v4l2_std_id std)584 static int saa7127_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
585 {
586 struct saa7127_state *state = to_state(sd);
587
588 if (state->std == std)
589 return 0;
590 return saa7127_set_std(sd, std);
591 }
592
saa7127_s_routing(struct v4l2_subdev * sd,u32 input,u32 output,u32 config)593 static int saa7127_s_routing(struct v4l2_subdev *sd,
594 u32 input, u32 output, u32 config)
595 {
596 struct saa7127_state *state = to_state(sd);
597 int rc = 0;
598
599 if (state->input_type != input)
600 rc = saa7127_set_input_type(sd, input);
601 if (rc == 0 && state->output_type != output)
602 rc = saa7127_set_output_type(sd, output);
603 return rc;
604 }
605
saa7127_s_stream(struct v4l2_subdev * sd,int enable)606 static int saa7127_s_stream(struct v4l2_subdev *sd, int enable)
607 {
608 struct saa7127_state *state = to_state(sd);
609
610 if (state->video_enable == enable)
611 return 0;
612 return saa7127_set_video_enable(sd, enable);
613 }
614
saa7127_g_sliced_fmt(struct v4l2_subdev * sd,struct v4l2_sliced_vbi_format * fmt)615 static int saa7127_g_sliced_fmt(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_format *fmt)
616 {
617 struct saa7127_state *state = to_state(sd);
618
619 memset(fmt->service_lines, 0, sizeof(fmt->service_lines));
620 if (state->vps_enable)
621 fmt->service_lines[0][16] = V4L2_SLICED_VPS;
622 if (state->wss_enable)
623 fmt->service_lines[0][23] = V4L2_SLICED_WSS_625;
624 if (state->cc_enable) {
625 fmt->service_lines[0][21] = V4L2_SLICED_CAPTION_525;
626 fmt->service_lines[1][21] = V4L2_SLICED_CAPTION_525;
627 }
628 fmt->service_set =
629 (state->vps_enable ? V4L2_SLICED_VPS : 0) |
630 (state->wss_enable ? V4L2_SLICED_WSS_625 : 0) |
631 (state->cc_enable ? V4L2_SLICED_CAPTION_525 : 0);
632 return 0;
633 }
634
saa7127_s_vbi_data(struct v4l2_subdev * sd,const struct v4l2_sliced_vbi_data * data)635 static int saa7127_s_vbi_data(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *data)
636 {
637 switch (data->id) {
638 case V4L2_SLICED_WSS_625:
639 return saa7127_set_wss(sd, data);
640 case V4L2_SLICED_VPS:
641 return saa7127_set_vps(sd, data);
642 case V4L2_SLICED_CAPTION_525:
643 if (data->field == 0)
644 return saa7127_set_cc(sd, data);
645 return saa7127_set_xds(sd, data);
646 default:
647 return -EINVAL;
648 }
649 return 0;
650 }
651
652 #ifdef CONFIG_VIDEO_ADV_DEBUG
saa7127_g_register(struct v4l2_subdev * sd,struct v4l2_dbg_register * reg)653 static int saa7127_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
654 {
655 reg->val = saa7127_read(sd, reg->reg & 0xff);
656 reg->size = 1;
657 return 0;
658 }
659
saa7127_s_register(struct v4l2_subdev * sd,const struct v4l2_dbg_register * reg)660 static int saa7127_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
661 {
662 saa7127_write(sd, reg->reg & 0xff, reg->val & 0xff);
663 return 0;
664 }
665 #endif
666
saa7127_log_status(struct v4l2_subdev * sd)667 static int saa7127_log_status(struct v4l2_subdev *sd)
668 {
669 struct saa7127_state *state = to_state(sd);
670
671 v4l2_info(sd, "Standard: %s\n", (state->std & V4L2_STD_525_60) ? "60 Hz" : "50 Hz");
672 v4l2_info(sd, "Input: %s\n", state->input_type ? "color bars" : "normal");
673 v4l2_info(sd, "Output: %s\n", state->video_enable ?
674 output_strs[state->output_type] : "disabled");
675 v4l2_info(sd, "WSS: %s\n", state->wss_enable ?
676 wss_strs[state->wss_mode] : "disabled");
677 v4l2_info(sd, "VPS: %s\n", state->vps_enable ? "enabled" : "disabled");
678 v4l2_info(sd, "CC: %s\n", state->cc_enable ? "enabled" : "disabled");
679 return 0;
680 }
681
682 /* ----------------------------------------------------------------------- */
683
684 static const struct v4l2_subdev_core_ops saa7127_core_ops = {
685 .log_status = saa7127_log_status,
686 #ifdef CONFIG_VIDEO_ADV_DEBUG
687 .g_register = saa7127_g_register,
688 .s_register = saa7127_s_register,
689 #endif
690 };
691
692 static const struct v4l2_subdev_video_ops saa7127_video_ops = {
693 .s_std_output = saa7127_s_std_output,
694 .s_routing = saa7127_s_routing,
695 .s_stream = saa7127_s_stream,
696 };
697
698 static const struct v4l2_subdev_vbi_ops saa7127_vbi_ops = {
699 .s_vbi_data = saa7127_s_vbi_data,
700 .g_sliced_fmt = saa7127_g_sliced_fmt,
701 };
702
703 static const struct v4l2_subdev_ops saa7127_ops = {
704 .core = &saa7127_core_ops,
705 .video = &saa7127_video_ops,
706 .vbi = &saa7127_vbi_ops,
707 };
708
709 /* ----------------------------------------------------------------------- */
710
saa7127_probe(struct i2c_client * client)711 static int saa7127_probe(struct i2c_client *client)
712 {
713 const struct i2c_device_id *id = i2c_client_get_device_id(client);
714 struct saa7127_state *state;
715 struct v4l2_subdev *sd;
716 struct v4l2_sliced_vbi_data vbi = { 0, 0, 0, 0 }; /* set to disabled */
717
718 /* Check if the adapter supports the needed features */
719 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
720 return -EIO;
721
722 v4l_dbg(1, debug, client, "detecting saa7127 client on address 0x%x\n",
723 client->addr << 1);
724
725 state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
726 if (state == NULL)
727 return -ENOMEM;
728
729 sd = &state->sd;
730 v4l2_i2c_subdev_init(sd, client, &saa7127_ops);
731
732 /* First test register 0: Bits 5-7 are a version ID (should be 0),
733 and bit 2 should also be 0.
734 This is rather general, so the second test is more specific and
735 looks at the 'ending point of burst in clock cycles' which is
736 0x1d after a reset and not expected to ever change. */
737 if ((saa7127_read(sd, 0) & 0xe4) != 0 ||
738 (saa7127_read(sd, 0x29) & 0x3f) != 0x1d) {
739 v4l2_dbg(1, debug, sd, "saa7127 not found\n");
740 return -ENODEV;
741 }
742
743 if (id->driver_data) { /* Chip type is already known */
744 state->ident = id->driver_data;
745 } else { /* Needs detection */
746 int read_result;
747
748 /* Detect if it's an saa7129 */
749 read_result = saa7127_read(sd, SAA7129_REG_FADE_KEY_COL2);
750 saa7127_write(sd, SAA7129_REG_FADE_KEY_COL2, 0xaa);
751 if (saa7127_read(sd, SAA7129_REG_FADE_KEY_COL2) == 0xaa) {
752 saa7127_write(sd, SAA7129_REG_FADE_KEY_COL2,
753 read_result);
754 state->ident = SAA7129;
755 strscpy(client->name, "saa7129", I2C_NAME_SIZE);
756 } else {
757 state->ident = SAA7127;
758 strscpy(client->name, "saa7127", I2C_NAME_SIZE);
759 }
760 }
761
762 v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name,
763 client->addr << 1, client->adapter->name);
764
765 v4l2_dbg(1, debug, sd, "Configuring encoder\n");
766 saa7127_write_inittab(sd, saa7127_init_config_common);
767 saa7127_set_std(sd, V4L2_STD_NTSC);
768 saa7127_set_output_type(sd, SAA7127_OUTPUT_TYPE_BOTH);
769 saa7127_set_vps(sd, &vbi);
770 saa7127_set_wss(sd, &vbi);
771 saa7127_set_cc(sd, &vbi);
772 saa7127_set_xds(sd, &vbi);
773 if (test_image == 1)
774 /* The Encoder has an internal Colorbar generator */
775 /* This can be used for debugging */
776 saa7127_set_input_type(sd, SAA7127_INPUT_TYPE_TEST_IMAGE);
777 else
778 saa7127_set_input_type(sd, SAA7127_INPUT_TYPE_NORMAL);
779 saa7127_set_video_enable(sd, 1);
780
781 if (state->ident == SAA7129)
782 saa7127_write_inittab(sd, saa7129_init_config_extra);
783 return 0;
784 }
785
786 /* ----------------------------------------------------------------------- */
787
saa7127_remove(struct i2c_client * client)788 static void saa7127_remove(struct i2c_client *client)
789 {
790 struct v4l2_subdev *sd = i2c_get_clientdata(client);
791
792 v4l2_device_unregister_subdev(sd);
793 /* Turn off TV output */
794 saa7127_set_video_enable(sd, 0);
795 }
796
797 /* ----------------------------------------------------------------------- */
798
799 static const struct i2c_device_id saa7127_id[] = {
800 { "saa7127_auto", 0 }, /* auto-detection */
801 { "saa7126", SAA7127 },
802 { "saa7127", SAA7127 },
803 { "saa7128", SAA7129 },
804 { "saa7129", SAA7129 },
805 { }
806 };
807 MODULE_DEVICE_TABLE(i2c, saa7127_id);
808
809 static struct i2c_driver saa7127_driver = {
810 .driver = {
811 .name = "saa7127",
812 },
813 .probe = saa7127_probe,
814 .remove = saa7127_remove,
815 .id_table = saa7127_id,
816 };
817
818 module_i2c_driver(saa7127_driver);
819