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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/media/video/cx88/cx88-tvaudio.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/media/video/cx88/cx88-tvaudio.c')
-rw-r--r--drivers/media/video/cx88/cx88-tvaudio.c1032
1 files changed, 1032 insertions, 0 deletions
diff --git a/drivers/media/video/cx88/cx88-tvaudio.c b/drivers/media/video/cx88/cx88-tvaudio.c
new file mode 100644
index 000000000000..f2a9475a2fee
--- /dev/null
+++ b/drivers/media/video/cx88/cx88-tvaudio.c
@@ -0,0 +1,1032 @@
1/*
2 $Id: cx88-tvaudio.c,v 1.34 2005/03/07 16:10:51 kraxel Exp $
3
4 cx88x-audio.c - Conexant CX23880/23881 audio downstream driver driver
5
6 (c) 2001 Michael Eskin, Tom Zakrajsek [Windows version]
7 (c) 2002 Yurij Sysoev <yurij@naturesoft.net>
8 (c) 2003 Gerd Knorr <kraxel@bytesex.org>
9
10 -----------------------------------------------------------------------
11
12 Lot of voodoo here. Even the data sheet doesn't help to
13 understand what is going on here, the documentation for the audio
14 part of the cx2388x chip is *very* bad.
15
16 Some of this comes from party done linux driver sources I got from
17 [undocumented].
18
19 Some comes from the dscaler sources, one of the dscaler driver guy works
20 for Conexant ...
21
22 -----------------------------------------------------------------------
23
24 This program is free software; you can redistribute it and/or modify
25 it under the terms of the GNU General Public License as published by
26 the Free Software Foundation; either version 2 of the License, or
27 (at your option) any later version.
28
29 This program is distributed in the hope that it will be useful,
30 but WITHOUT ANY WARRANTY; without even the implied warranty of
31 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
32 GNU General Public License for more details.
33
34 You should have received a copy of the GNU General Public License
35 along with this program; if not, write to the Free Software
36 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
37*/
38
39#include <linux/module.h>
40#include <linux/moduleparam.h>
41#include <linux/errno.h>
42#include <linux/kernel.h>
43#include <linux/slab.h>
44#include <linux/mm.h>
45#include <linux/poll.h>
46#include <linux/pci.h>
47#include <linux/signal.h>
48#include <linux/ioport.h>
49#include <linux/sched.h>
50#include <linux/types.h>
51#include <linux/interrupt.h>
52#include <linux/vmalloc.h>
53#include <linux/init.h>
54#include <linux/smp_lock.h>
55#include <linux/delay.h>
56#include <linux/kthread.h>
57
58#include "cx88.h"
59
60static unsigned int audio_debug = 0;
61module_param(audio_debug,int,0644);
62MODULE_PARM_DESC(audio_debug,"enable debug messages [audio]");
63
64#define dprintk(fmt, arg...) if (audio_debug) \
65 printk(KERN_DEBUG "%s/0: " fmt, core->name , ## arg)
66
67/* ----------------------------------------------------------- */
68
69static char *aud_ctl_names[64] =
70{
71 [ EN_BTSC_FORCE_MONO ] = "BTSC_FORCE_MONO",
72 [ EN_BTSC_FORCE_STEREO ] = "BTSC_FORCE_STEREO",
73 [ EN_BTSC_FORCE_SAP ] = "BTSC_FORCE_SAP",
74 [ EN_BTSC_AUTO_STEREO ] = "BTSC_AUTO_STEREO",
75 [ EN_BTSC_AUTO_SAP ] = "BTSC_AUTO_SAP",
76 [ EN_A2_FORCE_MONO1 ] = "A2_FORCE_MONO1",
77 [ EN_A2_FORCE_MONO2 ] = "A2_FORCE_MONO2",
78 [ EN_A2_FORCE_STEREO ] = "A2_FORCE_STEREO",
79 [ EN_A2_AUTO_MONO2 ] = "A2_AUTO_MONO2",
80 [ EN_A2_AUTO_STEREO ] = "A2_AUTO_STEREO",
81 [ EN_EIAJ_FORCE_MONO1 ] = "EIAJ_FORCE_MONO1",
82 [ EN_EIAJ_FORCE_MONO2 ] = "EIAJ_FORCE_MONO2",
83 [ EN_EIAJ_FORCE_STEREO ] = "EIAJ_FORCE_STEREO",
84 [ EN_EIAJ_AUTO_MONO2 ] = "EIAJ_AUTO_MONO2",
85 [ EN_EIAJ_AUTO_STEREO ] = "EIAJ_AUTO_STEREO",
86 [ EN_NICAM_FORCE_MONO1 ] = "NICAM_FORCE_MONO1",
87 [ EN_NICAM_FORCE_MONO2 ] = "NICAM_FORCE_MONO2",
88 [ EN_NICAM_FORCE_STEREO ] = "NICAM_FORCE_STEREO",
89 [ EN_NICAM_AUTO_MONO2 ] = "NICAM_AUTO_MONO2",
90 [ EN_NICAM_AUTO_STEREO ] = "NICAM_AUTO_STEREO",
91 [ EN_FMRADIO_FORCE_MONO ] = "FMRADIO_FORCE_MONO",
92 [ EN_FMRADIO_FORCE_STEREO ] = "FMRADIO_FORCE_STEREO",
93 [ EN_FMRADIO_AUTO_STEREO ] = "FMRADIO_AUTO_STEREO",
94};
95
96struct rlist {
97 u32 reg;
98 u32 val;
99};
100
101static void set_audio_registers(struct cx88_core *core,
102 const struct rlist *l)
103{
104 int i;
105
106 for (i = 0; l[i].reg; i++) {
107 switch (l[i].reg) {
108 case AUD_PDF_DDS_CNST_BYTE2:
109 case AUD_PDF_DDS_CNST_BYTE1:
110 case AUD_PDF_DDS_CNST_BYTE0:
111 case AUD_QAM_MODE:
112 case AUD_PHACC_FREQ_8MSB:
113 case AUD_PHACC_FREQ_8LSB:
114 cx_writeb(l[i].reg, l[i].val);
115 break;
116 default:
117 cx_write(l[i].reg, l[i].val);
118 break;
119 }
120 }
121}
122
123static void set_audio_start(struct cx88_core *core,
124 u32 mode, u32 ctl)
125{
126 // mute
127 cx_write(AUD_VOL_CTL, (1 << 6));
128
129 // increase level of input by 12dB
130 cx_write(AUD_AFE_12DB_EN, 0x0001);
131
132 // start programming
133 cx_write(AUD_CTL, 0x0000);
134 cx_write(AUD_INIT, mode);
135 cx_write(AUD_INIT_LD, 0x0001);
136 cx_write(AUD_SOFT_RESET, 0x0001);
137
138 cx_write(AUD_CTL, ctl);
139}
140
141static void set_audio_finish(struct cx88_core *core)
142{
143 u32 volume;
144
145 if (cx88_boards[core->board].blackbird) {
146 // 'pass-thru mode': this enables the i2s output to the mpeg encoder
147 cx_set(AUD_CTL, 0x2000);
148 cx_write(AUD_I2SOUTPUTCNTL, 1);
149 //cx_write(AUD_APB_IN_RATE_ADJ, 0);
150 }
151
152 // finish programming
153 cx_write(AUD_SOFT_RESET, 0x0000);
154
155 // start audio processing
156 cx_set(AUD_CTL, EN_DAC_ENABLE);
157
158 // unmute
159 volume = cx_sread(SHADOW_AUD_VOL_CTL);
160 cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, volume);
161}
162
163/* ----------------------------------------------------------- */
164
165static void set_audio_standard_BTSC(struct cx88_core *core, unsigned int sap)
166{
167 static const struct rlist btsc[] = {
168 /* from dscaler */
169 { AUD_OUT1_SEL, 0x00000013 },
170 { AUD_OUT1_SHIFT, 0x00000000 },
171 { AUD_POLY0_DDS_CONSTANT, 0x0012010c },
172 { AUD_DMD_RA_DDS, 0x00c3e7aa },
173 { AUD_DBX_IN_GAIN, 0x00004734 },
174 { AUD_DBX_WBE_GAIN, 0x00004640 },
175 { AUD_DBX_SE_GAIN, 0x00008d31 },
176 { AUD_DCOC_0_SRC, 0x0000001a },
177 { AUD_IIR1_4_SEL, 0x00000021 },
178 { AUD_DCOC_PASS_IN, 0x00000003 },
179 { AUD_DCOC_0_SHIFT_IN0, 0x0000000a },
180 { AUD_DCOC_0_SHIFT_IN1, 0x00000008 },
181 { AUD_DCOC_1_SHIFT_IN0, 0x0000000a },
182 { AUD_DCOC_1_SHIFT_IN1, 0x00000008 },
183 { AUD_DN0_FREQ, 0x0000283b },
184 { AUD_DN2_SRC_SEL, 0x00000008 },
185 { AUD_DN2_FREQ, 0x00003000 },
186 { AUD_DN2_AFC, 0x00000002 },
187 { AUD_DN2_SHFT, 0x00000000 },
188 { AUD_IIR2_2_SEL, 0x00000020 },
189 { AUD_IIR2_2_SHIFT, 0x00000000 },
190 { AUD_IIR2_3_SEL, 0x0000001f },
191 { AUD_IIR2_3_SHIFT, 0x00000000 },
192 { AUD_CRDC1_SRC_SEL, 0x000003ce },
193 { AUD_CRDC1_SHIFT, 0x00000000 },
194 { AUD_CORDIC_SHIFT_1, 0x00000007 },
195 { AUD_DCOC_1_SRC, 0x0000001b },
196 { AUD_DCOC1_SHIFT, 0x00000000 },
197 { AUD_RDSI_SEL, 0x00000008 },
198 { AUD_RDSQ_SEL, 0x00000008 },
199 { AUD_RDSI_SHIFT, 0x00000000 },
200 { AUD_RDSQ_SHIFT, 0x00000000 },
201 { AUD_POLYPH80SCALEFAC, 0x00000003 },
202 { /* end of list */ },
203 };
204 static const struct rlist btsc_sap[] = {
205 { AUD_DBX_IN_GAIN, 0x00007200 },
206 { AUD_DBX_WBE_GAIN, 0x00006200 },
207 { AUD_DBX_SE_GAIN, 0x00006200 },
208 { AUD_IIR1_1_SEL, 0x00000000 },
209 { AUD_IIR1_3_SEL, 0x00000001 },
210 { AUD_DN1_SRC_SEL, 0x00000007 },
211 { AUD_IIR1_4_SHIFT, 0x00000006 },
212 { AUD_IIR2_1_SHIFT, 0x00000000 },
213 { AUD_IIR2_2_SHIFT, 0x00000000 },
214 { AUD_IIR3_0_SHIFT, 0x00000000 },
215 { AUD_IIR3_1_SHIFT, 0x00000000 },
216 { AUD_IIR3_0_SEL, 0x0000000d },
217 { AUD_IIR3_1_SEL, 0x0000000e },
218 { AUD_DEEMPH1_SRC_SEL, 0x00000014 },
219 { AUD_DEEMPH1_SHIFT, 0x00000000 },
220 { AUD_DEEMPH1_G0, 0x00004000 },
221 { AUD_DEEMPH1_A0, 0x00000000 },
222 { AUD_DEEMPH1_B0, 0x00000000 },
223 { AUD_DEEMPH1_A1, 0x00000000 },
224 { AUD_DEEMPH1_B1, 0x00000000 },
225 { AUD_OUT0_SEL, 0x0000003f },
226 { AUD_OUT1_SEL, 0x0000003f },
227 { AUD_DN1_AFC, 0x00000002 },
228 { AUD_DCOC_0_SHIFT_IN0, 0x0000000a },
229 { AUD_DCOC_0_SHIFT_IN1, 0x00000008 },
230 { AUD_DCOC_1_SHIFT_IN0, 0x0000000a },
231 { AUD_DCOC_1_SHIFT_IN1, 0x00000008 },
232 { AUD_IIR1_0_SEL, 0x0000001d },
233 { AUD_IIR1_2_SEL, 0x0000001e },
234 { AUD_IIR2_1_SEL, 0x00000002 },
235 { AUD_IIR2_2_SEL, 0x00000004 },
236 { AUD_IIR3_2_SEL, 0x0000000f },
237 { AUD_DCOC2_SHIFT, 0x00000001 },
238 { AUD_IIR3_2_SHIFT, 0x00000001 },
239 { AUD_DEEMPH0_SRC_SEL, 0x00000014 },
240 { AUD_CORDIC_SHIFT_1, 0x00000006 },
241 { AUD_POLY0_DDS_CONSTANT, 0x000e4db2 },
242 { AUD_DMD_RA_DDS, 0x00f696e6 },
243 { AUD_IIR2_3_SEL, 0x00000025 },
244 { AUD_IIR1_4_SEL, 0x00000021 },
245 { AUD_DN1_FREQ, 0x0000c965 },
246 { AUD_DCOC_PASS_IN, 0x00000003 },
247 { AUD_DCOC_0_SRC, 0x0000001a },
248 { AUD_DCOC_1_SRC, 0x0000001b },
249 { AUD_DCOC1_SHIFT, 0x00000000 },
250 { AUD_RDSI_SEL, 0x00000009 },
251 { AUD_RDSQ_SEL, 0x00000009 },
252 { AUD_RDSI_SHIFT, 0x00000000 },
253 { AUD_RDSQ_SHIFT, 0x00000000 },
254 { AUD_POLYPH80SCALEFAC, 0x00000003 },
255 { /* end of list */ },
256 };
257
258 // dscaler: exactly taken from driver,
259 // dscaler: don't know why to set EN_FMRADIO_EN_RDS
260 if (sap) {
261 dprintk("%s SAP (status: unknown)\n",__FUNCTION__);
262 set_audio_start(core, 0x0001,
263 EN_FMRADIO_EN_RDS | EN_BTSC_FORCE_SAP);
264 set_audio_registers(core, btsc_sap);
265 } else {
266 dprintk("%s (status: known-good)\n",__FUNCTION__);
267 set_audio_start(core, 0x0001,
268 EN_FMRADIO_EN_RDS | EN_BTSC_AUTO_STEREO);
269 set_audio_registers(core, btsc);
270 }
271 set_audio_finish(core);
272}
273
274#if 0
275static void set_audio_standard_NICAM(struct cx88_core *core)
276{
277 static const struct rlist nicam_common[] = {
278 /* from dscaler */
279 { AUD_RATE_ADJ1, 0x00000010 },
280 { AUD_RATE_ADJ2, 0x00000040 },
281 { AUD_RATE_ADJ3, 0x00000100 },
282 { AUD_RATE_ADJ4, 0x00000400 },
283 { AUD_RATE_ADJ5, 0x00001000 },
284 // { AUD_DMD_RA_DDS, 0x00c0d5ce },
285
286 // Deemphasis 1:
287 { AUD_DEEMPHGAIN_R, 0x000023c2 },
288 { AUD_DEEMPHNUMER1_R, 0x0002a7bc },
289 { AUD_DEEMPHNUMER2_R, 0x0003023e },
290 { AUD_DEEMPHDENOM1_R, 0x0000f3d0 },
291 { AUD_DEEMPHDENOM2_R, 0x00000000 },
292
293#if 0
294 // Deemphasis 2: (other tv norm?)
295 { AUD_DEEMPHGAIN_R, 0x0000c600 },
296 { AUD_DEEMPHNUMER1_R, 0x00066738 },
297 { AUD_DEEMPHNUMER2_R, 0x00066739 },
298 { AUD_DEEMPHDENOM1_R, 0x0001e88c },
299 { AUD_DEEMPHDENOM2_R, 0x0001e88c },
300#endif
301
302 { AUD_DEEMPHDENOM2_R, 0x00000000 },
303 { AUD_ERRLOGPERIOD_R, 0x00000fff },
304 { AUD_ERRINTRPTTHSHLD1_R, 0x000003ff },
305 { AUD_ERRINTRPTTHSHLD2_R, 0x000000ff },
306 { AUD_ERRINTRPTTHSHLD3_R, 0x0000003f },
307 { AUD_POLYPH80SCALEFAC, 0x00000003 },
308
309 // setup QAM registers
310 { AUD_PDF_DDS_CNST_BYTE2, 0x06 },
311 { AUD_PDF_DDS_CNST_BYTE1, 0x82 },
312 { AUD_PDF_DDS_CNST_BYTE0, 0x16 },
313 { AUD_QAM_MODE, 0x05 },
314
315 { /* end of list */ },
316 };
317 static const struct rlist nicam_pal_i[] = {
318 { AUD_PDF_DDS_CNST_BYTE0, 0x12 },
319 { AUD_PHACC_FREQ_8MSB, 0x3a },
320 { AUD_PHACC_FREQ_8LSB, 0x93 },
321
322 { /* end of list */ },
323 };
324 static const struct rlist nicam_default[] = {
325 { AUD_PDF_DDS_CNST_BYTE0, 0x16 },
326 { AUD_PHACC_FREQ_8MSB, 0x34 },
327 { AUD_PHACC_FREQ_8LSB, 0x4c },
328
329 { /* end of list */ },
330 };
331
332 set_audio_start(core, 0x0010,
333 EN_DMTRX_LR | EN_DMTRX_BYPASS | EN_NICAM_AUTO_STEREO);
334 set_audio_registers(core, nicam_common);
335 switch (core->tvaudio) {
336 case WW_NICAM_I:
337 dprintk("%s PAL-I NICAM (status: unknown)\n",__FUNCTION__);
338 set_audio_registers(core, nicam_pal_i);
339 break;
340 case WW_NICAM_BGDKL:
341 dprintk("%s PAL-BGDK NICAM (status: unknown)\n",__FUNCTION__);
342 set_audio_registers(core, nicam_default);
343 break;
344 };
345 set_audio_finish(core);
346}
347#endif
348
349static void set_audio_standard_NICAM_L(struct cx88_core *core, int stereo)
350{
351 /* This is probably weird..
352 * Let's operate and find out. */
353
354 static const struct rlist nicam_l_mono[] = {
355 { AUD_ERRLOGPERIOD_R, 0x00000064 },
356 { AUD_ERRINTRPTTHSHLD1_R, 0x00000FFF },
357 { AUD_ERRINTRPTTHSHLD2_R, 0x0000001F },
358 { AUD_ERRINTRPTTHSHLD3_R, 0x0000000F },
359
360 { AUD_PDF_DDS_CNST_BYTE2, 0x48 },
361 { AUD_PDF_DDS_CNST_BYTE1, 0x3D },
362 { AUD_QAM_MODE, 0x00 },
363 { AUD_PDF_DDS_CNST_BYTE0, 0xf5 },
364 { AUD_PHACC_FREQ_8MSB, 0x3a },
365 { AUD_PHACC_FREQ_8LSB, 0x4a },
366
367 { AUD_DEEMPHGAIN_R, 0x6680 },
368 { AUD_DEEMPHNUMER1_R, 0x353DE },
369 { AUD_DEEMPHNUMER2_R, 0x1B1 },
370 { AUD_DEEMPHDENOM1_R, 0x0F3D0 },
371 { AUD_DEEMPHDENOM2_R, 0x0 },
372 { AUD_FM_MODE_ENABLE, 0x7 },
373 { AUD_POLYPH80SCALEFAC, 0x3 },
374 { AUD_AFE_12DB_EN, 0x1 },
375 { AAGC_GAIN, 0x0 },
376 { AAGC_HYST, 0x18 },
377 { AAGC_DEF, 0x20 },
378 { AUD_DN0_FREQ, 0x0 },
379 { AUD_POLY0_DDS_CONSTANT, 0x0E4DB2 },
380 { AUD_DCOC_0_SRC, 0x21 },
381 { AUD_IIR1_0_SEL, 0x0 },
382 { AUD_IIR1_0_SHIFT, 0x7 },
383 { AUD_IIR1_1_SEL, 0x2 },
384 { AUD_IIR1_1_SHIFT, 0x0 },
385 { AUD_DCOC_1_SRC, 0x3 },
386 { AUD_DCOC1_SHIFT, 0x0 },
387 { AUD_DCOC_PASS_IN, 0x0 },
388 { AUD_IIR1_2_SEL, 0x23 },
389 { AUD_IIR1_2_SHIFT, 0x0 },
390 { AUD_IIR1_3_SEL, 0x4 },
391 { AUD_IIR1_3_SHIFT, 0x7 },
392 { AUD_IIR1_4_SEL, 0x5 },
393 { AUD_IIR1_4_SHIFT, 0x7 },
394 { AUD_IIR3_0_SEL, 0x7 },
395 { AUD_IIR3_0_SHIFT, 0x0 },
396 { AUD_DEEMPH0_SRC_SEL, 0x11 },
397 { AUD_DEEMPH0_SHIFT, 0x0 },
398 { AUD_DEEMPH0_G0, 0x7000 },
399 { AUD_DEEMPH0_A0, 0x0 },
400 { AUD_DEEMPH0_B0, 0x0 },
401 { AUD_DEEMPH0_A1, 0x0 },
402 { AUD_DEEMPH0_B1, 0x0 },
403 { AUD_DEEMPH1_SRC_SEL, 0x11 },
404 { AUD_DEEMPH1_SHIFT, 0x0 },
405 { AUD_DEEMPH1_G0, 0x7000 },
406 { AUD_DEEMPH1_A0, 0x0 },
407 { AUD_DEEMPH1_B0, 0x0 },
408 { AUD_DEEMPH1_A1, 0x0 },
409 { AUD_DEEMPH1_B1, 0x0 },
410 { AUD_OUT0_SEL, 0x3F },
411 { AUD_OUT1_SEL, 0x3F },
412 { AUD_DMD_RA_DDS, 0x0F5C285 },
413 { AUD_PLL_INT, 0x1E },
414 { AUD_PLL_DDS, 0x0 },
415 { AUD_PLL_FRAC, 0x0E542 },
416
417 // setup QAM registers
418 { AUD_RATE_ADJ1, 0x00000100 },
419 { AUD_RATE_ADJ2, 0x00000200 },
420 { AUD_RATE_ADJ3, 0x00000300 },
421 { AUD_RATE_ADJ4, 0x00000400 },
422 { AUD_RATE_ADJ5, 0x00000500 },
423 { AUD_RATE_THRES_DMD, 0x000000C0 },
424 { /* end of list */ },
425 };
426
427 static const struct rlist nicam_l[] = {
428 // setup QAM registers
429 { AUD_RATE_ADJ1, 0x00000060 },
430 { AUD_RATE_ADJ2, 0x000000F9 },
431 { AUD_RATE_ADJ3, 0x000001CC },
432 { AUD_RATE_ADJ4, 0x000002B3 },
433 { AUD_RATE_ADJ5, 0x00000726 },
434 { AUD_DEEMPHDENOM1_R, 0x0000F3D0 },
435 { AUD_DEEMPHDENOM2_R, 0x00000000 },
436 { AUD_ERRLOGPERIOD_R, 0x00000064 },
437 { AUD_ERRINTRPTTHSHLD1_R, 0x00000FFF },
438 { AUD_ERRINTRPTTHSHLD2_R, 0x0000001F },
439 { AUD_ERRINTRPTTHSHLD3_R, 0x0000000F },
440 { AUD_POLYPH80SCALEFAC, 0x00000003 },
441 { AUD_DMD_RA_DDS, 0x00C00000 },
442 { AUD_PLL_INT, 0x0000001E },
443 { AUD_PLL_DDS, 0x00000000 },
444 { AUD_PLL_FRAC, 0x0000E542 },
445 { AUD_START_TIMER, 0x00000000 },
446 { AUD_DEEMPHNUMER1_R, 0x000353DE },
447 { AUD_DEEMPHNUMER2_R, 0x000001B1 },
448 { AUD_PDF_DDS_CNST_BYTE2, 0x06 },
449 { AUD_PDF_DDS_CNST_BYTE1, 0x82 },
450 { AUD_QAM_MODE, 0x05 },
451 { AUD_PDF_DDS_CNST_BYTE0, 0x12 },
452 { AUD_PHACC_FREQ_8MSB, 0x34 },
453 { AUD_PHACC_FREQ_8LSB, 0x4C },
454 { AUD_DEEMPHGAIN_R, 0x00006680 },
455 { AUD_RATE_THRES_DMD, 0x000000C0 },
456 { /* end of list */ },
457 } ;
458 dprintk("%s (status: devel), stereo : %d\n",__FUNCTION__,stereo);
459
460 if (!stereo) {
461 /* AM mono sound */
462 set_audio_start(core, 0x0004,
463 0x100c /* FIXME again */);
464 set_audio_registers(core, nicam_l_mono);
465 } else {
466 set_audio_start(core, 0x0010,
467 0x1924 /* FIXME again */);
468 set_audio_registers(core, nicam_l);
469 }
470 set_audio_finish(core);
471
472}
473
474static void set_audio_standard_PAL_I(struct cx88_core *core, int stereo)
475{
476 static const struct rlist pal_i_fm_mono[] = {
477 {AUD_ERRLOGPERIOD_R, 0x00000064},
478 {AUD_ERRINTRPTTHSHLD1_R, 0x00000fff},
479 {AUD_ERRINTRPTTHSHLD2_R, 0x0000001f},
480 {AUD_ERRINTRPTTHSHLD3_R, 0x0000000f},
481 {AUD_PDF_DDS_CNST_BYTE2, 0x06},
482 {AUD_PDF_DDS_CNST_BYTE1, 0x82},
483 {AUD_PDF_DDS_CNST_BYTE0, 0x12},
484 {AUD_QAM_MODE, 0x05},
485 {AUD_PHACC_FREQ_8MSB, 0x3a},
486 {AUD_PHACC_FREQ_8LSB, 0x93},
487 {AUD_DMD_RA_DDS, 0x002a4f2f},
488 {AUD_PLL_INT, 0x0000001e},
489 {AUD_PLL_DDS, 0x00000004},
490 {AUD_PLL_FRAC, 0x0000e542},
491 {AUD_RATE_ADJ1, 0x00000100},
492 {AUD_RATE_ADJ2, 0x00000200},
493 {AUD_RATE_ADJ3, 0x00000300},
494 {AUD_RATE_ADJ4, 0x00000400},
495 {AUD_RATE_ADJ5, 0x00000500},
496 {AUD_THR_FR, 0x00000000},
497 {AUD_PILOT_BQD_1_K0, 0x0000755b},
498 {AUD_PILOT_BQD_1_K1, 0x00551340},
499 {AUD_PILOT_BQD_1_K2, 0x006d30be},
500 {AUD_PILOT_BQD_1_K3, 0xffd394af},
501 {AUD_PILOT_BQD_1_K4, 0x00400000},
502 {AUD_PILOT_BQD_2_K0, 0x00040000},
503 {AUD_PILOT_BQD_2_K1, 0x002a4841},
504 {AUD_PILOT_BQD_2_K2, 0x00400000},
505 {AUD_PILOT_BQD_2_K3, 0x00000000},
506 {AUD_PILOT_BQD_2_K4, 0x00000000},
507 {AUD_MODE_CHG_TIMER, 0x00000060},
508 {AUD_AFE_12DB_EN, 0x00000001},
509 {AAGC_HYST, 0x0000000a},
510 {AUD_CORDIC_SHIFT_0, 0x00000007},
511 {AUD_CORDIC_SHIFT_1, 0x00000007},
512 {AUD_C1_UP_THR, 0x00007000},
513 {AUD_C1_LO_THR, 0x00005400},
514 {AUD_C2_UP_THR, 0x00005400},
515 {AUD_C2_LO_THR, 0x00003000},
516 {AUD_DCOC_0_SRC, 0x0000001a},
517 {AUD_DCOC0_SHIFT, 0x00000000},
518 {AUD_DCOC_0_SHIFT_IN0, 0x0000000a},
519 {AUD_DCOC_0_SHIFT_IN1, 0x00000008},
520 {AUD_DCOC_PASS_IN, 0x00000003},
521 {AUD_IIR3_0_SEL, 0x00000021},
522 {AUD_DN2_AFC, 0x00000002},
523 {AUD_DCOC_1_SRC, 0x0000001b},
524 {AUD_DCOC1_SHIFT, 0x00000000},
525 {AUD_DCOC_1_SHIFT_IN0, 0x0000000a},
526 {AUD_DCOC_1_SHIFT_IN1, 0x00000008},
527 {AUD_IIR3_1_SEL, 0x00000023},
528 {AUD_DN0_FREQ, 0x000035a3},
529 {AUD_DN2_FREQ, 0x000029c7},
530 {AUD_CRDC0_SRC_SEL, 0x00000511},
531 {AUD_IIR1_0_SEL, 0x00000001},
532 {AUD_IIR1_1_SEL, 0x00000000},
533 {AUD_IIR3_2_SEL, 0x00000003},
534 {AUD_IIR3_2_SHIFT, 0x00000000},
535 {AUD_IIR3_0_SEL, 0x00000002},
536 {AUD_IIR2_0_SEL, 0x00000021},
537 {AUD_IIR2_0_SHIFT, 0x00000002},
538 {AUD_DEEMPH0_SRC_SEL, 0x0000000b},
539 {AUD_DEEMPH1_SRC_SEL, 0x0000000b},
540 {AUD_POLYPH80SCALEFAC, 0x00000001},
541 {AUD_START_TIMER, 0x00000000},
542 { /* end of list */ },
543 };
544
545 static const struct rlist pal_i_nicam[] = {
546 { AUD_RATE_ADJ1, 0x00000010 },
547 { AUD_RATE_ADJ2, 0x00000040 },
548 { AUD_RATE_ADJ3, 0x00000100 },
549 { AUD_RATE_ADJ4, 0x00000400 },
550 { AUD_RATE_ADJ5, 0x00001000 },
551 // { AUD_DMD_RA_DDS, 0x00c0d5ce },
552 { AUD_DEEMPHGAIN_R, 0x000023c2 },
553 { AUD_DEEMPHNUMER1_R, 0x0002a7bc },
554 { AUD_DEEMPHNUMER2_R, 0x0003023e },
555 { AUD_DEEMPHDENOM1_R, 0x0000f3d0 },
556 { AUD_DEEMPHDENOM2_R, 0x00000000 },
557 { AUD_DEEMPHDENOM2_R, 0x00000000 },
558 { AUD_ERRLOGPERIOD_R, 0x00000fff },
559 { AUD_ERRINTRPTTHSHLD1_R, 0x000003ff },
560 { AUD_ERRINTRPTTHSHLD2_R, 0x000000ff },
561 { AUD_ERRINTRPTTHSHLD3_R, 0x0000003f },
562 { AUD_POLYPH80SCALEFAC, 0x00000003 },
563 { AUD_PDF_DDS_CNST_BYTE2, 0x06 },
564 { AUD_PDF_DDS_CNST_BYTE1, 0x82 },
565 { AUD_PDF_DDS_CNST_BYTE0, 0x16 },
566 { AUD_QAM_MODE, 0x05 },
567 { AUD_PDF_DDS_CNST_BYTE0, 0x12 },
568 { AUD_PHACC_FREQ_8MSB, 0x3a },
569 { AUD_PHACC_FREQ_8LSB, 0x93 },
570 { /* end of list */ },
571 };
572
573 dprintk("%s (status: devel), stereo : %d\n",__FUNCTION__,stereo);
574
575 if (!stereo) {
576 // FM mono
577 set_audio_start(core, 0x0004, EN_DMTRX_SUMDIFF | EN_A2_FORCE_MONO1);
578 set_audio_registers(core, pal_i_fm_mono);
579 } else {
580 // Nicam Stereo
581 set_audio_start(core, 0x0010, EN_DMTRX_LR | EN_DMTRX_BYPASS | EN_NICAM_AUTO_STEREO);
582 set_audio_registers(core, pal_i_nicam);
583 }
584 set_audio_finish(core);
585}
586
587static void set_audio_standard_A2(struct cx88_core *core)
588{
589 /* from dscaler cvs */
590 static const struct rlist a2_common[] = {
591 { AUD_PDF_DDS_CNST_BYTE2, 0x06 },
592 { AUD_PDF_DDS_CNST_BYTE1, 0x82 },
593 { AUD_PDF_DDS_CNST_BYTE0, 0x12 },
594 { AUD_QAM_MODE, 0x05 },
595 { AUD_PHACC_FREQ_8MSB, 0x34 },
596 { AUD_PHACC_FREQ_8LSB, 0x4c },
597
598 { AUD_RATE_ADJ1, 0x00001000 },
599 { AUD_RATE_ADJ2, 0x00002000 },
600 { AUD_RATE_ADJ3, 0x00003000 },
601 { AUD_RATE_ADJ4, 0x00004000 },
602 { AUD_RATE_ADJ5, 0x00005000 },
603 { AUD_THR_FR, 0x00000000 },
604 { AAGC_HYST, 0x0000001a },
605 { AUD_PILOT_BQD_1_K0, 0x0000755b },
606 { AUD_PILOT_BQD_1_K1, 0x00551340 },
607 { AUD_PILOT_BQD_1_K2, 0x006d30be },
608 { AUD_PILOT_BQD_1_K3, 0xffd394af },
609 { AUD_PILOT_BQD_1_K4, 0x00400000 },
610 { AUD_PILOT_BQD_2_K0, 0x00040000 },
611 { AUD_PILOT_BQD_2_K1, 0x002a4841 },
612 { AUD_PILOT_BQD_2_K2, 0x00400000 },
613 { AUD_PILOT_BQD_2_K3, 0x00000000 },
614 { AUD_PILOT_BQD_2_K4, 0x00000000 },
615 { AUD_MODE_CHG_TIMER, 0x00000040 },
616 { AUD_START_TIMER, 0x00000200 },
617 { AUD_AFE_12DB_EN, 0x00000000 },
618 { AUD_CORDIC_SHIFT_0, 0x00000007 },
619 { AUD_CORDIC_SHIFT_1, 0x00000007 },
620 { AUD_DEEMPH0_G0, 0x00000380 },
621 { AUD_DEEMPH1_G0, 0x00000380 },
622 { AUD_DCOC_0_SRC, 0x0000001a },
623 { AUD_DCOC0_SHIFT, 0x00000000 },
624 { AUD_DCOC_0_SHIFT_IN0, 0x0000000a },
625 { AUD_DCOC_0_SHIFT_IN1, 0x00000008 },
626 { AUD_DCOC_PASS_IN, 0x00000003 },
627 { AUD_IIR3_0_SEL, 0x00000021 },
628 { AUD_DN2_AFC, 0x00000002 },
629 { AUD_DCOC_1_SRC, 0x0000001b },
630 { AUD_DCOC1_SHIFT, 0x00000000 },
631 { AUD_DCOC_1_SHIFT_IN0, 0x0000000a },
632 { AUD_DCOC_1_SHIFT_IN1, 0x00000008 },
633 { AUD_IIR3_1_SEL, 0x00000023 },
634 { AUD_RDSI_SEL, 0x00000017 },
635 { AUD_RDSI_SHIFT, 0x00000000 },
636 { AUD_RDSQ_SEL, 0x00000017 },
637 { AUD_RDSQ_SHIFT, 0x00000000 },
638 { AUD_POLYPH80SCALEFAC, 0x00000001 },
639
640 { /* end of list */ },
641 };
642
643 static const struct rlist a2_table1[] = {
644 // PAL-BG
645 { AUD_DMD_RA_DDS, 0x002a73bd },
646 { AUD_C1_UP_THR, 0x00007000 },
647 { AUD_C1_LO_THR, 0x00005400 },
648 { AUD_C2_UP_THR, 0x00005400 },
649 { AUD_C2_LO_THR, 0x00003000 },
650 { /* end of list */ },
651 };
652 static const struct rlist a2_table2[] = {
653 // PAL-DK
654 { AUD_DMD_RA_DDS, 0x002a73bd },
655 { AUD_C1_UP_THR, 0x00007000 },
656 { AUD_C1_LO_THR, 0x00005400 },
657 { AUD_C2_UP_THR, 0x00005400 },
658 { AUD_C2_LO_THR, 0x00003000 },
659 { AUD_DN0_FREQ, 0x00003a1c },
660 { AUD_DN2_FREQ, 0x0000d2e0 },
661 { /* end of list */ },
662 };
663 static const struct rlist a2_table3[] = {
664 // unknown, probably NTSC-M
665 { AUD_DMD_RA_DDS, 0x002a2873 },
666 { AUD_C1_UP_THR, 0x00003c00 },
667 { AUD_C1_LO_THR, 0x00003000 },
668 { AUD_C2_UP_THR, 0x00006000 },
669 { AUD_C2_LO_THR, 0x00003c00 },
670 { AUD_DN0_FREQ, 0x00002836 },
671 { AUD_DN1_FREQ, 0x00003418 },
672 { AUD_DN2_FREQ, 0x000029c7 },
673 { AUD_POLY0_DDS_CONSTANT, 0x000a7540 },
674 { /* end of list */ },
675 };
676
677 set_audio_start(core, 0x0004, EN_DMTRX_SUMDIFF | EN_A2_AUTO_STEREO);
678 set_audio_registers(core, a2_common);
679 switch (core->tvaudio) {
680 case WW_A2_BG:
681 dprintk("%s PAL-BG A2 (status: known-good)\n",__FUNCTION__);
682 set_audio_registers(core, a2_table1);
683 break;
684 case WW_A2_DK:
685 dprintk("%s PAL-DK A2 (status: known-good)\n",__FUNCTION__);
686 set_audio_registers(core, a2_table2);
687 break;
688 case WW_A2_M:
689 dprintk("%s NTSC-M A2 (status: unknown)\n",__FUNCTION__);
690 set_audio_registers(core, a2_table3);
691 break;
692 };
693 set_audio_finish(core);
694}
695
696static void set_audio_standard_EIAJ(struct cx88_core *core)
697{
698 static const struct rlist eiaj[] = {
699 /* TODO: eiaj register settings are not there yet ... */
700
701 { /* end of list */ },
702 };
703 dprintk("%s (status: unknown)\n",__FUNCTION__);
704
705 set_audio_start(core, 0x0002, EN_EIAJ_AUTO_STEREO);
706 set_audio_registers(core, eiaj);
707 set_audio_finish(core);
708}
709
710static void set_audio_standard_FM(struct cx88_core *core)
711{
712#if 0 /* FIXME */
713 switch (dev->audio_properties.FM_deemphasis)
714 {
715 case WW_FM_DEEMPH_50:
716 //Set De-emphasis filter coefficients for 50 usec
717 cx_write(AUD_DEEMPH0_G0, 0x0C45);
718 cx_write(AUD_DEEMPH0_A0, 0x6262);
719 cx_write(AUD_DEEMPH0_B0, 0x1C29);
720 cx_write(AUD_DEEMPH0_A1, 0x3FC66);
721 cx_write(AUD_DEEMPH0_B1, 0x399A);
722
723 cx_write(AUD_DEEMPH1_G0, 0x0D80);
724 cx_write(AUD_DEEMPH1_A0, 0x6262);
725 cx_write(AUD_DEEMPH1_B0, 0x1C29);
726 cx_write(AUD_DEEMPH1_A1, 0x3FC66);
727 cx_write(AUD_DEEMPH1_B1, 0x399A);
728
729 break;
730
731 case WW_FM_DEEMPH_75:
732 //Set De-emphasis filter coefficients for 75 usec
733 cx_write(AUD_DEEMPH0_G0, 0x91B );
734 cx_write(AUD_DEEMPH0_A0, 0x6B68);
735 cx_write(AUD_DEEMPH0_B0, 0x11EC);
736 cx_write(AUD_DEEMPH0_A1, 0x3FC66);
737 cx_write(AUD_DEEMPH0_B1, 0x399A);
738
739 cx_write(AUD_DEEMPH1_G0, 0xAA0 );
740 cx_write(AUD_DEEMPH1_A0, 0x6B68);
741 cx_write(AUD_DEEMPH1_B0, 0x11EC);
742 cx_write(AUD_DEEMPH1_A1, 0x3FC66);
743 cx_write(AUD_DEEMPH1_B1, 0x399A);
744
745 break;
746 }
747#endif
748
749 dprintk("%s (status: unknown)\n",__FUNCTION__);
750 set_audio_start(core, 0x0020, EN_FMRADIO_AUTO_STEREO);
751
752 // AB: 10/2/01: this register is not being reset appropriately on occasion.
753 cx_write(AUD_POLYPH80SCALEFAC,3);
754
755 set_audio_finish(core);
756}
757
758/* ----------------------------------------------------------- */
759
760void cx88_set_tvaudio(struct cx88_core *core)
761{
762 switch (core->tvaudio) {
763 case WW_BTSC:
764 set_audio_standard_BTSC(core,0);
765 break;
766 case WW_NICAM_BGDKL:
767 set_audio_standard_NICAM_L(core,0);
768 break;
769 case WW_NICAM_I:
770 set_audio_standard_PAL_I(core,0);
771 break;
772 case WW_A2_BG:
773 case WW_A2_DK:
774 case WW_A2_M:
775 set_audio_standard_A2(core);
776 break;
777 case WW_EIAJ:
778 set_audio_standard_EIAJ(core);
779 break;
780 case WW_FM:
781 set_audio_standard_FM(core);
782 break;
783 case WW_SYSTEM_L_AM:
784 set_audio_standard_NICAM_L(core, 1);
785 break;
786 case WW_NONE:
787 default:
788 printk("%s/0: unknown tv audio mode [%d]\n",
789 core->name, core->tvaudio);
790 break;
791 }
792 return;
793}
794
795void cx88_newstation(struct cx88_core *core)
796{
797 core->audiomode_manual = UNSET;
798
799 switch (core->tvaudio) {
800 case WW_SYSTEM_L_AM:
801 /* try nicam ... */
802 core->audiomode_current = V4L2_TUNER_MODE_STEREO;
803 set_audio_standard_NICAM_L(core, 1);
804 break;
805 }
806}
807
808void cx88_get_stereo(struct cx88_core *core, struct v4l2_tuner *t)
809{
810 static char *m[] = {"stereo", "dual mono", "mono", "sap"};
811 static char *p[] = {"no pilot", "pilot c1", "pilot c2", "?"};
812 u32 reg,mode,pilot;
813
814 reg = cx_read(AUD_STATUS);
815 mode = reg & 0x03;
816 pilot = (reg >> 2) & 0x03;
817
818 if (core->astat != reg)
819 dprintk("AUD_STATUS: 0x%x [%s/%s] ctl=%s\n",
820 reg, m[mode], p[pilot],
821 aud_ctl_names[cx_read(AUD_CTL) & 63]);
822 core->astat = reg;
823
824 t->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_SAP |
825 V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
826 t->rxsubchans = V4L2_TUNER_SUB_MONO;
827 t->audmode = V4L2_TUNER_MODE_MONO;
828
829 switch (core->tvaudio) {
830 case WW_BTSC:
831 t->capability = V4L2_TUNER_CAP_STEREO |
832 V4L2_TUNER_CAP_SAP;
833 t->rxsubchans = V4L2_TUNER_SUB_STEREO;
834 if (1 == pilot) {
835 /* SAP */
836 t->rxsubchans |= V4L2_TUNER_SUB_SAP;
837 }
838 break;
839 case WW_A2_BG:
840 case WW_A2_DK:
841 case WW_A2_M:
842 if (1 == pilot) {
843 /* stereo */
844 t->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
845 if (0 == mode)
846 t->audmode = V4L2_TUNER_MODE_STEREO;
847 }
848 if (2 == pilot) {
849 /* dual language -- FIXME */
850 t->rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
851 t->audmode = V4L2_TUNER_MODE_LANG1;
852 }
853 break;
854 case WW_NICAM_BGDKL:
855 if (0 == mode) {
856 t->audmode = V4L2_TUNER_MODE_STEREO;
857 t->rxsubchans |= V4L2_TUNER_SUB_STEREO;
858 }
859 break;
860 case WW_SYSTEM_L_AM:
861 if (0x0 == mode && !(cx_read(AUD_INIT) & 0x04)) {
862 t->audmode = V4L2_TUNER_MODE_STEREO;
863 t->rxsubchans |= V4L2_TUNER_SUB_STEREO;
864 }
865 break ;
866 default:
867 /* nothing */
868 break;
869 }
870 return;
871}
872
873void cx88_set_stereo(struct cx88_core *core, u32 mode, int manual)
874{
875 u32 ctl = UNSET;
876 u32 mask = UNSET;
877
878 if (manual) {
879 core->audiomode_manual = mode;
880 } else {
881 if (UNSET != core->audiomode_manual)
882 return;
883 }
884 core->audiomode_current = mode;
885
886 switch (core->tvaudio) {
887 case WW_BTSC:
888 switch (mode) {
889 case V4L2_TUNER_MODE_MONO:
890 ctl = EN_BTSC_FORCE_MONO;
891 mask = 0x3f;
892 break;
893 case V4L2_TUNER_MODE_SAP:
894 ctl = EN_BTSC_FORCE_SAP;
895 mask = 0x3f;
896 break;
897 case V4L2_TUNER_MODE_STEREO:
898 ctl = EN_BTSC_AUTO_STEREO;
899 mask = 0x3f;
900 break;
901 }
902 break;
903 case WW_A2_BG:
904 case WW_A2_DK:
905 case WW_A2_M:
906 switch (mode) {
907 case V4L2_TUNER_MODE_MONO:
908 case V4L2_TUNER_MODE_LANG1:
909 ctl = EN_A2_FORCE_MONO1;
910 mask = 0x3f;
911 break;
912 case V4L2_TUNER_MODE_LANG2:
913 ctl = EN_A2_AUTO_MONO2;
914 mask = 0x3f;
915 break;
916 case V4L2_TUNER_MODE_STEREO:
917 ctl = EN_A2_AUTO_STEREO | EN_DMTRX_SUMR;
918 mask = 0x8bf;
919 break;
920 }
921 break;
922 case WW_NICAM_BGDKL:
923 switch (mode) {
924 case V4L2_TUNER_MODE_MONO:
925 ctl = EN_NICAM_FORCE_MONO1;
926 mask = 0x3f;
927 break;
928 case V4L2_TUNER_MODE_LANG1:
929 ctl = EN_NICAM_AUTO_MONO2;
930 mask = 0x3f;
931 break;
932 case V4L2_TUNER_MODE_STEREO:
933 ctl = EN_NICAM_FORCE_STEREO | EN_DMTRX_LR;
934 mask = 0x93f;
935 break;
936 }
937 break;
938 case WW_SYSTEM_L_AM:
939 switch (mode) {
940 case V4L2_TUNER_MODE_MONO:
941 case V4L2_TUNER_MODE_LANG1: /* FIXME */
942 set_audio_standard_NICAM_L(core, 0);
943 break;
944 case V4L2_TUNER_MODE_STEREO:
945 set_audio_standard_NICAM_L(core, 1);
946 break;
947 }
948 break;
949 case WW_NICAM_I:
950 switch (mode) {
951 case V4L2_TUNER_MODE_MONO:
952 case V4L2_TUNER_MODE_LANG1:
953 set_audio_standard_PAL_I(core, 0);
954 break;
955 case V4L2_TUNER_MODE_STEREO:
956 set_audio_standard_PAL_I(core, 1);
957 break;
958 }
959 break;
960 case WW_FM:
961 switch (mode) {
962 case V4L2_TUNER_MODE_MONO:
963 ctl = EN_FMRADIO_FORCE_MONO;
964 mask = 0x3f;
965 break;
966 case V4L2_TUNER_MODE_STEREO:
967 ctl = EN_FMRADIO_AUTO_STEREO;
968 mask = 0x3f;
969 break;
970 }
971 break;
972 }
973
974 if (UNSET != ctl) {
975 dprintk("cx88_set_stereo: mask 0x%x, ctl 0x%x "
976 "[status=0x%x,ctl=0x%x,vol=0x%x]\n",
977 mask, ctl, cx_read(AUD_STATUS),
978 cx_read(AUD_CTL), cx_sread(SHADOW_AUD_VOL_CTL));
979 cx_andor(AUD_CTL, mask, ctl);
980 }
981 return;
982}
983
984int cx88_audio_thread(void *data)
985{
986 struct cx88_core *core = data;
987 struct v4l2_tuner t;
988 u32 mode = 0;
989
990 dprintk("cx88: tvaudio thread started\n");
991 for (;;) {
992 msleep_interruptible(1000);
993 if (kthread_should_stop())
994 break;
995
996 /* just monitor the audio status for now ... */
997 memset(&t,0,sizeof(t));
998 cx88_get_stereo(core,&t);
999
1000 if (UNSET != core->audiomode_manual)
1001 /* manually set, don't do anything. */
1002 continue;
1003
1004 /* monitor signal */
1005 if (t.rxsubchans & V4L2_TUNER_SUB_STEREO)
1006 mode = V4L2_TUNER_MODE_STEREO;
1007 else
1008 mode = V4L2_TUNER_MODE_MONO;
1009 if (mode == core->audiomode_current)
1010 continue;
1011
1012 /* automatically switch to best available mode */
1013 cx88_set_stereo(core, mode, 0);
1014 }
1015
1016 dprintk("cx88: tvaudio thread exiting\n");
1017 return 0;
1018}
1019
1020/* ----------------------------------------------------------- */
1021
1022EXPORT_SYMBOL(cx88_set_tvaudio);
1023EXPORT_SYMBOL(cx88_newstation);
1024EXPORT_SYMBOL(cx88_set_stereo);
1025EXPORT_SYMBOL(cx88_get_stereo);
1026EXPORT_SYMBOL(cx88_audio_thread);
1027
1028/*
1029 * Local variables:
1030 * c-basic-offset: 8
1031 * End:
1032 */
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-26 02:28:52 -0500