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1da177e4 LT |
1 | /* |
2 | * ac97_codec.c: Generic AC97 mixer/modem module | |
3 | * | |
4 | * Derived from ac97 mixer in maestro and trident driver. | |
5 | * | |
6 | * Copyright 2000 Silicon Integrated System Corporation | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
21 | * | |
22 | ************************************************************************** | |
23 | * | |
24 | * The Intel Audio Codec '97 specification is available at the Intel | |
25 | * audio homepage: http://developer.intel.com/ial/scalableplatforms/audio/ | |
26 | * | |
27 | * The specification itself is currently available at: | |
28 | * ftp://download.intel.com/ial/scalableplatforms/ac97r22.pdf | |
29 | * | |
30 | ************************************************************************** | |
31 | * | |
32 | * History | |
33 | * May 02, 2003 Liam Girdwood <liam.girdwood@wolfsonmicro.com> | |
34 | * Removed non existant WM9700 | |
35 | * Added support for WM9705, WM9708, WM9709, WM9710, WM9711 | |
36 | * WM9712 and WM9717 | |
37 | * Mar 28, 2002 Randolph Bentson <bentson@holmsjoen.com> | |
38 | * corrections to support WM9707 in ViewPad 1000 | |
39 | * v0.4 Mar 15 2000 Ollie Lho | |
40 | * dual codecs support verified with 4 channels output | |
41 | * v0.3 Feb 22 2000 Ollie Lho | |
42 | * bug fix for record mask setting | |
43 | * v0.2 Feb 10 2000 Ollie Lho | |
44 | * add ac97_read_proc for /proc/driver/{vendor}/ac97 | |
45 | * v0.1 Jan 14 2000 Ollie Lho <ollie@sis.com.tw> | |
46 | * Isolated from trident.c to support multiple ac97 codec | |
47 | */ | |
48 | #include <linux/module.h> | |
49 | #include <linux/kernel.h> | |
50 | #include <linux/slab.h> | |
51 | #include <linux/string.h> | |
52 | #include <linux/errno.h> | |
53 | #include <linux/bitops.h> | |
54 | #include <linux/delay.h> | |
55 | #include <linux/pci.h> | |
56 | #include <linux/ac97_codec.h> | |
57 | #include <asm/uaccess.h> | |
58 | ||
59 | #define CODEC_ID_BUFSZ 14 | |
60 | ||
61 | static int ac97_read_mixer(struct ac97_codec *codec, int oss_channel); | |
62 | static void ac97_write_mixer(struct ac97_codec *codec, int oss_channel, | |
63 | unsigned int left, unsigned int right); | |
64 | static void ac97_set_mixer(struct ac97_codec *codec, unsigned int oss_mixer, unsigned int val ); | |
65 | static int ac97_recmask_io(struct ac97_codec *codec, int rw, int mask); | |
66 | static int ac97_mixer_ioctl(struct ac97_codec *codec, unsigned int cmd, unsigned long arg); | |
67 | ||
68 | static int ac97_init_mixer(struct ac97_codec *codec); | |
69 | ||
70 | static int wolfson_init03(struct ac97_codec * codec); | |
71 | static int wolfson_init04(struct ac97_codec * codec); | |
72 | static int wolfson_init05(struct ac97_codec * codec); | |
73 | static int wolfson_init11(struct ac97_codec * codec); | |
74 | static int wolfson_init13(struct ac97_codec * codec); | |
75 | static int tritech_init(struct ac97_codec * codec); | |
76 | static int tritech_maestro_init(struct ac97_codec * codec); | |
77 | static int sigmatel_9708_init(struct ac97_codec *codec); | |
78 | static int sigmatel_9721_init(struct ac97_codec *codec); | |
79 | static int sigmatel_9744_init(struct ac97_codec *codec); | |
80 | static int ad1886_init(struct ac97_codec *codec); | |
81 | static int eapd_control(struct ac97_codec *codec, int); | |
82 | static int crystal_digital_control(struct ac97_codec *codec, int slots, int rate, int mode); | |
83 | static int cmedia_init(struct ac97_codec * codec); | |
84 | static int cmedia_digital_control(struct ac97_codec *codec, int slots, int rate, int mode); | |
85 | static int generic_digital_control(struct ac97_codec *codec, int slots, int rate, int mode); | |
86 | ||
87 | ||
88 | /* | |
89 | * AC97 operations. | |
90 | * | |
91 | * If you are adding a codec then you should be able to use | |
92 | * eapd_ops - any codec that supports EAPD amp control (most) | |
93 | * null_ops - any ancient codec that supports nothing | |
94 | * | |
95 | * The three functions are | |
96 | * init - used for non AC97 standard initialisation | |
97 | * amplifier - used to do amplifier control (1=on 0=off) | |
98 | * digital - switch to digital modes (0 = analog) | |
99 | * | |
100 | * Not all codecs support all features, not all drivers use all the | |
101 | * operations yet | |
102 | */ | |
103 | ||
104 | static struct ac97_ops null_ops = { NULL, NULL, NULL }; | |
105 | static struct ac97_ops default_ops = { NULL, eapd_control, NULL }; | |
106 | static struct ac97_ops default_digital_ops = { NULL, eapd_control, generic_digital_control}; | |
107 | static struct ac97_ops wolfson_ops03 = { wolfson_init03, NULL, NULL }; | |
108 | static struct ac97_ops wolfson_ops04 = { wolfson_init04, NULL, NULL }; | |
109 | static struct ac97_ops wolfson_ops05 = { wolfson_init05, NULL, NULL }; | |
110 | static struct ac97_ops wolfson_ops11 = { wolfson_init11, NULL, NULL }; | |
111 | static struct ac97_ops wolfson_ops13 = { wolfson_init13, NULL, NULL }; | |
112 | static struct ac97_ops tritech_ops = { tritech_init, NULL, NULL }; | |
113 | static struct ac97_ops tritech_m_ops = { tritech_maestro_init, NULL, NULL }; | |
114 | static struct ac97_ops sigmatel_9708_ops = { sigmatel_9708_init, NULL, NULL }; | |
115 | static struct ac97_ops sigmatel_9721_ops = { sigmatel_9721_init, NULL, NULL }; | |
116 | static struct ac97_ops sigmatel_9744_ops = { sigmatel_9744_init, NULL, NULL }; | |
117 | static struct ac97_ops crystal_digital_ops = { NULL, eapd_control, crystal_digital_control }; | |
118 | static struct ac97_ops ad1886_ops = { ad1886_init, eapd_control, NULL }; | |
119 | static struct ac97_ops cmedia_ops = { NULL, eapd_control, NULL}; | |
120 | static struct ac97_ops cmedia_digital_ops = { cmedia_init, eapd_control, cmedia_digital_control}; | |
121 | ||
122 | /* sorted by vendor/device id */ | |
123 | static const struct { | |
124 | u32 id; | |
125 | char *name; | |
126 | struct ac97_ops *ops; | |
127 | int flags; | |
128 | } ac97_codec_ids[] = { | |
129 | {0x41445303, "Analog Devices AD1819", &null_ops}, | |
130 | {0x41445340, "Analog Devices AD1881", &null_ops}, | |
131 | {0x41445348, "Analog Devices AD1881A", &null_ops}, | |
132 | {0x41445360, "Analog Devices AD1885", &default_ops}, | |
133 | {0x41445361, "Analog Devices AD1886", &ad1886_ops}, | |
134 | {0x41445370, "Analog Devices AD1981", &null_ops}, | |
135 | {0x41445372, "Analog Devices AD1981A", &null_ops}, | |
136 | {0x41445374, "Analog Devices AD1981B", &null_ops}, | |
137 | {0x41445460, "Analog Devices AD1885", &default_ops}, | |
138 | {0x41445461, "Analog Devices AD1886", &ad1886_ops}, | |
139 | {0x414B4D00, "Asahi Kasei AK4540", &null_ops}, | |
140 | {0x414B4D01, "Asahi Kasei AK4542", &null_ops}, | |
141 | {0x414B4D02, "Asahi Kasei AK4543", &null_ops}, | |
142 | {0x414C4326, "ALC100P", &null_ops}, | |
143 | {0x414C4710, "ALC200/200P", &null_ops}, | |
144 | {0x414C4720, "ALC650", &default_digital_ops}, | |
145 | {0x434D4941, "CMedia", &cmedia_ops, AC97_NO_PCM_VOLUME }, | |
146 | {0x434D4942, "CMedia", &cmedia_ops, AC97_NO_PCM_VOLUME }, | |
147 | {0x434D4961, "CMedia", &cmedia_digital_ops, AC97_NO_PCM_VOLUME }, | |
148 | {0x43525900, "Cirrus Logic CS4297", &default_ops}, | |
149 | {0x43525903, "Cirrus Logic CS4297", &default_ops}, | |
150 | {0x43525913, "Cirrus Logic CS4297A rev A", &default_ops}, | |
151 | {0x43525914, "Cirrus Logic CS4297A rev B", &default_ops}, | |
152 | {0x43525923, "Cirrus Logic CS4298", &null_ops}, | |
153 | {0x4352592B, "Cirrus Logic CS4294", &null_ops}, | |
154 | {0x4352592D, "Cirrus Logic CS4294", &null_ops}, | |
155 | {0x43525931, "Cirrus Logic CS4299 rev A", &crystal_digital_ops}, | |
156 | {0x43525933, "Cirrus Logic CS4299 rev C", &crystal_digital_ops}, | |
157 | {0x43525934, "Cirrus Logic CS4299 rev D", &crystal_digital_ops}, | |
158 | {0x43585442, "CXT66", &default_ops, AC97_DELUDED_MODEM }, | |
159 | {0x44543031, "Diamond Technology DT0893", &default_ops}, | |
160 | {0x45838308, "ESS Allegro ES1988", &null_ops}, | |
161 | {0x49434511, "ICE1232", &null_ops}, /* I hope --jk */ | |
162 | {0x4e534331, "National Semiconductor LM4549", &null_ops}, | |
163 | {0x53494c22, "Silicon Laboratory Si3036", &null_ops}, | |
164 | {0x53494c23, "Silicon Laboratory Si3038", &null_ops}, | |
165 | {0x545200FF, "TriTech TR?????", &tritech_m_ops}, | |
166 | {0x54524102, "TriTech TR28022", &null_ops}, | |
167 | {0x54524103, "TriTech TR28023", &null_ops}, | |
168 | {0x54524106, "TriTech TR28026", &null_ops}, | |
169 | {0x54524108, "TriTech TR28028", &tritech_ops}, | |
170 | {0x54524123, "TriTech TR A5", &null_ops}, | |
171 | {0x574D4C03, "Wolfson WM9703/07/08/17", &wolfson_ops03}, | |
172 | {0x574D4C04, "Wolfson WM9704M/WM9704Q", &wolfson_ops04}, | |
173 | {0x574D4C05, "Wolfson WM9705/WM9710", &wolfson_ops05}, | |
174 | {0x574D4C09, "Wolfson WM9709", &null_ops}, | |
175 | {0x574D4C12, "Wolfson WM9711/9712", &wolfson_ops11}, | |
176 | {0x574D4C13, "Wolfson WM9713", &wolfson_ops13, AC97_DEFAULT_POWER_OFF}, | |
177 | {0x83847600, "SigmaTel STAC????", &null_ops}, | |
178 | {0x83847604, "SigmaTel STAC9701/3/4/5", &null_ops}, | |
179 | {0x83847605, "SigmaTel STAC9704", &null_ops}, | |
180 | {0x83847608, "SigmaTel STAC9708", &sigmatel_9708_ops}, | |
181 | {0x83847609, "SigmaTel STAC9721/23", &sigmatel_9721_ops}, | |
182 | {0x83847644, "SigmaTel STAC9744/45", &sigmatel_9744_ops}, | |
183 | {0x83847652, "SigmaTel STAC9752/53", &default_ops}, | |
184 | {0x83847656, "SigmaTel STAC9756/57", &sigmatel_9744_ops}, | |
185 | {0x83847666, "SigmaTel STAC9750T", &sigmatel_9744_ops}, | |
186 | {0x83847684, "SigmaTel STAC9783/84?", &null_ops}, | |
187 | {0x57454301, "Winbond 83971D", &null_ops}, | |
188 | }; | |
189 | ||
190 | static const char *ac97_stereo_enhancements[] = | |
191 | { | |
192 | /* 0 */ "No 3D Stereo Enhancement", | |
193 | /* 1 */ "Analog Devices Phat Stereo", | |
194 | /* 2 */ "Creative Stereo Enhancement", | |
195 | /* 3 */ "National Semi 3D Stereo Enhancement", | |
196 | /* 4 */ "YAMAHA Ymersion", | |
197 | /* 5 */ "BBE 3D Stereo Enhancement", | |
198 | /* 6 */ "Crystal Semi 3D Stereo Enhancement", | |
199 | /* 7 */ "Qsound QXpander", | |
200 | /* 8 */ "Spatializer 3D Stereo Enhancement", | |
201 | /* 9 */ "SRS 3D Stereo Enhancement", | |
202 | /* 10 */ "Platform Tech 3D Stereo Enhancement", | |
203 | /* 11 */ "AKM 3D Audio", | |
204 | /* 12 */ "Aureal Stereo Enhancement", | |
205 | /* 13 */ "Aztech 3D Enhancement", | |
206 | /* 14 */ "Binaura 3D Audio Enhancement", | |
207 | /* 15 */ "ESS Technology Stereo Enhancement", | |
208 | /* 16 */ "Harman International VMAx", | |
209 | /* 17 */ "Nvidea 3D Stereo Enhancement", | |
210 | /* 18 */ "Philips Incredible Sound", | |
211 | /* 19 */ "Texas Instruments 3D Stereo Enhancement", | |
212 | /* 20 */ "VLSI Technology 3D Stereo Enhancement", | |
213 | /* 21 */ "TriTech 3D Stereo Enhancement", | |
214 | /* 22 */ "Realtek 3D Stereo Enhancement", | |
215 | /* 23 */ "Samsung 3D Stereo Enhancement", | |
216 | /* 24 */ "Wolfson Microelectronics 3D Enhancement", | |
217 | /* 25 */ "Delta Integration 3D Enhancement", | |
218 | /* 26 */ "SigmaTel 3D Enhancement", | |
219 | /* 27 */ "Winbond 3D Stereo Enhancement", | |
220 | /* 28 */ "Rockwell 3D Stereo Enhancement", | |
221 | /* 29 */ "Reserved 29", | |
222 | /* 30 */ "Reserved 30", | |
223 | /* 31 */ "Reserved 31" | |
224 | }; | |
225 | ||
226 | /* this table has default mixer values for all OSS mixers. */ | |
227 | static struct mixer_defaults { | |
228 | int mixer; | |
229 | unsigned int value; | |
230 | } mixer_defaults[SOUND_MIXER_NRDEVICES] = { | |
231 | /* all values 0 -> 100 in bytes */ | |
232 | {SOUND_MIXER_VOLUME, 0x4343}, | |
233 | {SOUND_MIXER_BASS, 0x4343}, | |
234 | {SOUND_MIXER_TREBLE, 0x4343}, | |
235 | {SOUND_MIXER_PCM, 0x4343}, | |
236 | {SOUND_MIXER_SPEAKER, 0x4343}, | |
237 | {SOUND_MIXER_LINE, 0x4343}, | |
238 | {SOUND_MIXER_MIC, 0x0000}, | |
239 | {SOUND_MIXER_CD, 0x4343}, | |
240 | {SOUND_MIXER_ALTPCM, 0x4343}, | |
241 | {SOUND_MIXER_IGAIN, 0x4343}, | |
242 | {SOUND_MIXER_LINE1, 0x4343}, | |
243 | {SOUND_MIXER_PHONEIN, 0x4343}, | |
244 | {SOUND_MIXER_PHONEOUT, 0x4343}, | |
245 | {SOUND_MIXER_VIDEO, 0x4343}, | |
246 | {-1,0} | |
247 | }; | |
248 | ||
249 | /* table to scale scale from OSS mixer value to AC97 mixer register value */ | |
250 | static struct ac97_mixer_hw { | |
251 | unsigned char offset; | |
252 | int scale; | |
253 | } ac97_hw[SOUND_MIXER_NRDEVICES]= { | |
254 | [SOUND_MIXER_VOLUME] = {AC97_MASTER_VOL_STEREO,64}, | |
255 | [SOUND_MIXER_BASS] = {AC97_MASTER_TONE, 16}, | |
256 | [SOUND_MIXER_TREBLE] = {AC97_MASTER_TONE, 16}, | |
257 | [SOUND_MIXER_PCM] = {AC97_PCMOUT_VOL, 32}, | |
258 | [SOUND_MIXER_SPEAKER] = {AC97_PCBEEP_VOL, 16}, | |
259 | [SOUND_MIXER_LINE] = {AC97_LINEIN_VOL, 32}, | |
260 | [SOUND_MIXER_MIC] = {AC97_MIC_VOL, 32}, | |
261 | [SOUND_MIXER_CD] = {AC97_CD_VOL, 32}, | |
262 | [SOUND_MIXER_ALTPCM] = {AC97_HEADPHONE_VOL, 64}, | |
263 | [SOUND_MIXER_IGAIN] = {AC97_RECORD_GAIN, 16}, | |
264 | [SOUND_MIXER_LINE1] = {AC97_AUX_VOL, 32}, | |
265 | [SOUND_MIXER_PHONEIN] = {AC97_PHONE_VOL, 32}, | |
266 | [SOUND_MIXER_PHONEOUT] = {AC97_MASTER_VOL_MONO, 64}, | |
267 | [SOUND_MIXER_VIDEO] = {AC97_VIDEO_VOL, 32}, | |
268 | }; | |
269 | ||
270 | /* the following tables allow us to go from OSS <-> ac97 quickly. */ | |
271 | enum ac97_recsettings { | |
272 | AC97_REC_MIC=0, | |
273 | AC97_REC_CD, | |
274 | AC97_REC_VIDEO, | |
275 | AC97_REC_AUX, | |
276 | AC97_REC_LINE, | |
277 | AC97_REC_STEREO, /* combination of all enabled outputs.. */ | |
278 | AC97_REC_MONO, /*.. or the mono equivalent */ | |
279 | AC97_REC_PHONE | |
280 | }; | |
281 | ||
282 | static const unsigned int ac97_rm2oss[] = { | |
283 | [AC97_REC_MIC] = SOUND_MIXER_MIC, | |
284 | [AC97_REC_CD] = SOUND_MIXER_CD, | |
285 | [AC97_REC_VIDEO] = SOUND_MIXER_VIDEO, | |
286 | [AC97_REC_AUX] = SOUND_MIXER_LINE1, | |
287 | [AC97_REC_LINE] = SOUND_MIXER_LINE, | |
288 | [AC97_REC_STEREO]= SOUND_MIXER_IGAIN, | |
289 | [AC97_REC_PHONE] = SOUND_MIXER_PHONEIN | |
290 | }; | |
291 | ||
292 | /* indexed by bit position */ | |
293 | static const unsigned int ac97_oss_rm[] = { | |
294 | [SOUND_MIXER_MIC] = AC97_REC_MIC, | |
295 | [SOUND_MIXER_CD] = AC97_REC_CD, | |
296 | [SOUND_MIXER_VIDEO] = AC97_REC_VIDEO, | |
297 | [SOUND_MIXER_LINE1] = AC97_REC_AUX, | |
298 | [SOUND_MIXER_LINE] = AC97_REC_LINE, | |
299 | [SOUND_MIXER_IGAIN] = AC97_REC_STEREO, | |
300 | [SOUND_MIXER_PHONEIN] = AC97_REC_PHONE | |
301 | }; | |
302 | ||
303 | static LIST_HEAD(codecs); | |
304 | static LIST_HEAD(codec_drivers); | |
305 | static DECLARE_MUTEX(codec_sem); | |
306 | ||
307 | /* reads the given OSS mixer from the ac97 the caller must have insured that the ac97 knows | |
308 | about that given mixer, and should be holding a spinlock for the card */ | |
309 | static int ac97_read_mixer(struct ac97_codec *codec, int oss_channel) | |
310 | { | |
311 | u16 val; | |
312 | int ret = 0; | |
313 | int scale; | |
314 | struct ac97_mixer_hw *mh = &ac97_hw[oss_channel]; | |
315 | ||
316 | val = codec->codec_read(codec , mh->offset); | |
317 | ||
318 | if (val & AC97_MUTE) { | |
319 | ret = 0; | |
320 | } else if (AC97_STEREO_MASK & (1 << oss_channel)) { | |
321 | /* nice stereo mixers .. */ | |
322 | int left,right; | |
323 | ||
324 | left = (val >> 8) & 0x7f; | |
325 | right = val & 0x7f; | |
326 | ||
327 | if (oss_channel == SOUND_MIXER_IGAIN) { | |
328 | right = (right * 100) / mh->scale; | |
329 | left = (left * 100) / mh->scale; | |
330 | } else { | |
331 | /* these may have 5 or 6 bit resolution */ | |
332 | if(oss_channel == SOUND_MIXER_VOLUME || oss_channel == SOUND_MIXER_ALTPCM) | |
333 | scale = (1 << codec->bit_resolution); | |
334 | else | |
335 | scale = mh->scale; | |
336 | ||
337 | right = 100 - ((right * 100) / scale); | |
338 | left = 100 - ((left * 100) / scale); | |
339 | } | |
340 | ret = left | (right << 8); | |
341 | } else if (oss_channel == SOUND_MIXER_SPEAKER) { | |
342 | ret = 100 - ((((val & 0x1e)>>1) * 100) / mh->scale); | |
343 | } else if (oss_channel == SOUND_MIXER_PHONEIN) { | |
344 | ret = 100 - (((val & 0x1f) * 100) / mh->scale); | |
345 | } else if (oss_channel == SOUND_MIXER_PHONEOUT) { | |
346 | scale = (1 << codec->bit_resolution); | |
347 | ret = 100 - (((val & 0x1f) * 100) / scale); | |
348 | } else if (oss_channel == SOUND_MIXER_MIC) { | |
349 | ret = 100 - (((val & 0x1f) * 100) / mh->scale); | |
350 | /* the low bit is optional in the tone sliders and masking | |
351 | it lets us avoid the 0xf 'bypass'.. */ | |
352 | } else if (oss_channel == SOUND_MIXER_BASS) { | |
353 | ret = 100 - ((((val >> 8) & 0xe) * 100) / mh->scale); | |
354 | } else if (oss_channel == SOUND_MIXER_TREBLE) { | |
355 | ret = 100 - (((val & 0xe) * 100) / mh->scale); | |
356 | } | |
357 | ||
358 | #ifdef DEBUG | |
359 | printk("ac97_codec: read OSS mixer %2d (%s ac97 register 0x%02x), " | |
360 | "0x%04x -> 0x%04x\n", | |
361 | oss_channel, codec->id ? "Secondary" : "Primary", | |
362 | mh->offset, val, ret); | |
363 | #endif | |
364 | ||
365 | return ret; | |
366 | } | |
367 | ||
368 | /* write the OSS encoded volume to the given OSS encoded mixer, again caller's job to | |
369 | make sure all is well in arg land, call with spinlock held */ | |
370 | static void ac97_write_mixer(struct ac97_codec *codec, int oss_channel, | |
371 | unsigned int left, unsigned int right) | |
372 | { | |
373 | u16 val = 0; | |
374 | int scale; | |
375 | struct ac97_mixer_hw *mh = &ac97_hw[oss_channel]; | |
376 | ||
377 | #ifdef DEBUG | |
378 | printk("ac97_codec: wrote OSS mixer %2d (%s ac97 register 0x%02x), " | |
379 | "left vol:%2d, right vol:%2d:", | |
380 | oss_channel, codec->id ? "Secondary" : "Primary", | |
381 | mh->offset, left, right); | |
382 | #endif | |
383 | ||
384 | if (AC97_STEREO_MASK & (1 << oss_channel)) { | |
385 | /* stereo mixers */ | |
386 | if (left == 0 && right == 0) { | |
387 | val = AC97_MUTE; | |
388 | } else { | |
389 | if (oss_channel == SOUND_MIXER_IGAIN) { | |
390 | right = (right * mh->scale) / 100; | |
391 | left = (left * mh->scale) / 100; | |
392 | if (right >= mh->scale) | |
393 | right = mh->scale-1; | |
394 | if (left >= mh->scale) | |
395 | left = mh->scale-1; | |
396 | } else { | |
397 | /* these may have 5 or 6 bit resolution */ | |
398 | if (oss_channel == SOUND_MIXER_VOLUME || | |
399 | oss_channel == SOUND_MIXER_ALTPCM) | |
400 | scale = (1 << codec->bit_resolution); | |
401 | else | |
402 | scale = mh->scale; | |
403 | ||
404 | right = ((100 - right) * scale) / 100; | |
405 | left = ((100 - left) * scale) / 100; | |
406 | if (right >= scale) | |
407 | right = scale-1; | |
408 | if (left >= scale) | |
409 | left = scale-1; | |
410 | } | |
411 | val = (left << 8) | right; | |
412 | } | |
413 | } else if (oss_channel == SOUND_MIXER_BASS) { | |
414 | val = codec->codec_read(codec , mh->offset) & ~0x0f00; | |
415 | left = ((100 - left) * mh->scale) / 100; | |
416 | if (left >= mh->scale) | |
417 | left = mh->scale-1; | |
418 | val |= (left << 8) & 0x0e00; | |
419 | } else if (oss_channel == SOUND_MIXER_TREBLE) { | |
420 | val = codec->codec_read(codec , mh->offset) & ~0x000f; | |
421 | left = ((100 - left) * mh->scale) / 100; | |
422 | if (left >= mh->scale) | |
423 | left = mh->scale-1; | |
424 | val |= left & 0x000e; | |
425 | } else if(left == 0) { | |
426 | val = AC97_MUTE; | |
427 | } else if (oss_channel == SOUND_MIXER_SPEAKER) { | |
428 | left = ((100 - left) * mh->scale) / 100; | |
429 | if (left >= mh->scale) | |
430 | left = mh->scale-1; | |
431 | val = left << 1; | |
432 | } else if (oss_channel == SOUND_MIXER_PHONEIN) { | |
433 | left = ((100 - left) * mh->scale) / 100; | |
434 | if (left >= mh->scale) | |
435 | left = mh->scale-1; | |
436 | val = left; | |
437 | } else if (oss_channel == SOUND_MIXER_PHONEOUT) { | |
438 | scale = (1 << codec->bit_resolution); | |
439 | left = ((100 - left) * scale) / 100; | |
440 | if (left >= mh->scale) | |
441 | left = mh->scale-1; | |
442 | val = left; | |
443 | } else if (oss_channel == SOUND_MIXER_MIC) { | |
444 | val = codec->codec_read(codec , mh->offset) & ~0x801f; | |
445 | left = ((100 - left) * mh->scale) / 100; | |
446 | if (left >= mh->scale) | |
447 | left = mh->scale-1; | |
448 | val |= left; | |
449 | /* the low bit is optional in the tone sliders and masking | |
450 | it lets us avoid the 0xf 'bypass'.. */ | |
451 | } | |
452 | #ifdef DEBUG | |
453 | printk(" 0x%04x", val); | |
454 | #endif | |
455 | ||
456 | codec->codec_write(codec, mh->offset, val); | |
457 | ||
458 | #ifdef DEBUG | |
459 | val = codec->codec_read(codec, mh->offset); | |
460 | printk(" -> 0x%04x\n", val); | |
461 | #endif | |
462 | } | |
463 | ||
464 | /* a thin wrapper for write_mixer */ | |
465 | static void ac97_set_mixer(struct ac97_codec *codec, unsigned int oss_mixer, unsigned int val ) | |
466 | { | |
467 | unsigned int left,right; | |
468 | ||
469 | /* cleanse input a little */ | |
470 | right = ((val >> 8) & 0xff) ; | |
471 | left = (val & 0xff) ; | |
472 | ||
473 | if (right > 100) right = 100; | |
474 | if (left > 100) left = 100; | |
475 | ||
476 | codec->mixer_state[oss_mixer] = (right << 8) | left; | |
477 | codec->write_mixer(codec, oss_mixer, left, right); | |
478 | } | |
479 | ||
480 | /* read or write the recmask, the ac97 can really have left and right recording | |
481 | inputs independantly set, but OSS doesn't seem to want us to express that to | |
482 | the user. the caller guarantees that we have a supported bit set, and they | |
483 | must be holding the card's spinlock */ | |
484 | static int ac97_recmask_io(struct ac97_codec *codec, int rw, int mask) | |
485 | { | |
486 | unsigned int val; | |
487 | ||
488 | if (rw) { | |
489 | /* read it from the card */ | |
490 | val = codec->codec_read(codec, AC97_RECORD_SELECT); | |
491 | #ifdef DEBUG | |
492 | printk("ac97_codec: ac97 recmask to set to 0x%04x\n", val); | |
493 | #endif | |
494 | return (1 << ac97_rm2oss[val & 0x07]); | |
495 | } | |
496 | ||
497 | /* else, write the first set in the mask as the | |
498 | output */ | |
499 | /* clear out current set value first (AC97 supports only 1 input!) */ | |
500 | val = (1 << ac97_rm2oss[codec->codec_read(codec, AC97_RECORD_SELECT) & 0x07]); | |
501 | if (mask != val) | |
502 | mask &= ~val; | |
503 | ||
504 | val = ffs(mask); | |
505 | val = ac97_oss_rm[val-1]; | |
506 | val |= val << 8; /* set both channels */ | |
507 | ||
508 | #ifdef DEBUG | |
509 | printk("ac97_codec: setting ac97 recmask to 0x%04x\n", val); | |
510 | #endif | |
511 | ||
512 | codec->codec_write(codec, AC97_RECORD_SELECT, val); | |
513 | ||
514 | return 0; | |
515 | }; | |
516 | ||
517 | static int ac97_mixer_ioctl(struct ac97_codec *codec, unsigned int cmd, unsigned long arg) | |
518 | { | |
519 | int i, val = 0; | |
520 | ||
521 | if (cmd == SOUND_MIXER_INFO) { | |
522 | mixer_info info; | |
523 | memset(&info, 0, sizeof(info)); | |
524 | strlcpy(info.id, codec->name, sizeof(info.id)); | |
525 | strlcpy(info.name, codec->name, sizeof(info.name)); | |
526 | info.modify_counter = codec->modcnt; | |
527 | if (copy_to_user((void __user *)arg, &info, sizeof(info))) | |
528 | return -EFAULT; | |
529 | return 0; | |
530 | } | |
531 | if (cmd == SOUND_OLD_MIXER_INFO) { | |
532 | _old_mixer_info info; | |
533 | memset(&info, 0, sizeof(info)); | |
534 | strlcpy(info.id, codec->name, sizeof(info.id)); | |
535 | strlcpy(info.name, codec->name, sizeof(info.name)); | |
536 | if (copy_to_user((void __user *)arg, &info, sizeof(info))) | |
537 | return -EFAULT; | |
538 | return 0; | |
539 | } | |
540 | ||
541 | if (_IOC_TYPE(cmd) != 'M' || _SIOC_SIZE(cmd) != sizeof(int)) | |
542 | return -EINVAL; | |
543 | ||
544 | if (cmd == OSS_GETVERSION) | |
545 | return put_user(SOUND_VERSION, (int __user *)arg); | |
546 | ||
547 | if (_SIOC_DIR(cmd) == _SIOC_READ) { | |
548 | switch (_IOC_NR(cmd)) { | |
549 | case SOUND_MIXER_RECSRC: /* give them the current record source */ | |
550 | if (!codec->recmask_io) { | |
551 | val = 0; | |
552 | } else { | |
553 | val = codec->recmask_io(codec, 1, 0); | |
554 | } | |
555 | break; | |
556 | ||
557 | case SOUND_MIXER_DEVMASK: /* give them the supported mixers */ | |
558 | val = codec->supported_mixers; | |
559 | break; | |
560 | ||
561 | case SOUND_MIXER_RECMASK: /* Arg contains a bit for each supported recording source */ | |
562 | val = codec->record_sources; | |
563 | break; | |
564 | ||
565 | case SOUND_MIXER_STEREODEVS: /* Mixer channels supporting stereo */ | |
566 | val = codec->stereo_mixers; | |
567 | break; | |
568 | ||
569 | case SOUND_MIXER_CAPS: | |
570 | val = SOUND_CAP_EXCL_INPUT; | |
571 | break; | |
572 | ||
573 | default: /* read a specific mixer */ | |
574 | i = _IOC_NR(cmd); | |
575 | ||
576 | if (!supported_mixer(codec, i)) | |
577 | return -EINVAL; | |
578 | ||
579 | /* do we ever want to touch the hardware? */ | |
580 | /* val = codec->read_mixer(codec, i); */ | |
581 | val = codec->mixer_state[i]; | |
582 | break; | |
583 | } | |
584 | return put_user(val, (int __user *)arg); | |
585 | } | |
586 | ||
587 | if (_SIOC_DIR(cmd) == (_SIOC_WRITE|_SIOC_READ)) { | |
588 | codec->modcnt++; | |
589 | if (get_user(val, (int __user *)arg)) | |
590 | return -EFAULT; | |
591 | ||
592 | switch (_IOC_NR(cmd)) { | |
593 | case SOUND_MIXER_RECSRC: /* Arg contains a bit for each recording source */ | |
594 | if (!codec->recmask_io) return -EINVAL; | |
595 | if (!val) return 0; | |
596 | if (!(val &= codec->record_sources)) return -EINVAL; | |
597 | ||
598 | codec->recmask_io(codec, 0, val); | |
599 | ||
600 | return 0; | |
601 | default: /* write a specific mixer */ | |
602 | i = _IOC_NR(cmd); | |
603 | ||
604 | if (!supported_mixer(codec, i)) | |
605 | return -EINVAL; | |
606 | ||
607 | ac97_set_mixer(codec, i, val); | |
608 | ||
609 | return 0; | |
610 | } | |
611 | } | |
612 | return -EINVAL; | |
613 | } | |
614 | ||
615 | /* entry point for /proc/driver/controller_vendor/ac97/%d */ | |
616 | int ac97_read_proc (char *page, char **start, off_t off, | |
617 | int count, int *eof, void *data) | |
618 | { | |
619 | int len = 0, cap, extid, val, id1, id2; | |
620 | struct ac97_codec *codec; | |
621 | int is_ac97_20 = 0; | |
622 | ||
623 | if ((codec = data) == NULL) | |
624 | return -ENODEV; | |
625 | ||
626 | id1 = codec->codec_read(codec, AC97_VENDOR_ID1); | |
627 | id2 = codec->codec_read(codec, AC97_VENDOR_ID2); | |
628 | len += sprintf (page+len, "Vendor name : %s\n", codec->name); | |
629 | len += sprintf (page+len, "Vendor id : %04X %04X\n", id1, id2); | |
630 | ||
631 | extid = codec->codec_read(codec, AC97_EXTENDED_ID); | |
632 | extid &= ~((1<<2)|(1<<4)|(1<<5)|(1<<10)|(1<<11)|(1<<12)|(1<<13)); | |
633 | len += sprintf (page+len, "AC97 Version : %s\n", | |
634 | extid ? "2.0 or later" : "1.0"); | |
635 | if (extid) is_ac97_20 = 1; | |
636 | ||
637 | cap = codec->codec_read(codec, AC97_RESET); | |
638 | len += sprintf (page+len, "Capabilities :%s%s%s%s%s%s\n", | |
639 | cap & 0x0001 ? " -dedicated MIC PCM IN channel-" : "", | |
640 | cap & 0x0002 ? " -reserved1-" : "", | |
641 | cap & 0x0004 ? " -bass & treble-" : "", | |
642 | cap & 0x0008 ? " -simulated stereo-" : "", | |
643 | cap & 0x0010 ? " -headphone out-" : "", | |
644 | cap & 0x0020 ? " -loudness-" : ""); | |
645 | val = cap & 0x00c0; | |
646 | len += sprintf (page+len, "DAC resolutions :%s%s%s\n", | |
647 | " -16-bit-", | |
648 | val & 0x0040 ? " -18-bit-" : "", | |
649 | val & 0x0080 ? " -20-bit-" : ""); | |
650 | val = cap & 0x0300; | |
651 | len += sprintf (page+len, "ADC resolutions :%s%s%s\n", | |
652 | " -16-bit-", | |
653 | val & 0x0100 ? " -18-bit-" : "", | |
654 | val & 0x0200 ? " -20-bit-" : ""); | |
655 | len += sprintf (page+len, "3D enhancement : %s\n", | |
656 | ac97_stereo_enhancements[(cap >> 10) & 0x1f]); | |
657 | ||
658 | val = codec->codec_read(codec, AC97_GENERAL_PURPOSE); | |
659 | len += sprintf (page+len, "POP path : %s 3D\n" | |
660 | "Sim. stereo : %s\n" | |
661 | "3D enhancement : %s\n" | |
662 | "Loudness : %s\n" | |
663 | "Mono output : %s\n" | |
664 | "MIC select : %s\n" | |
665 | "ADC/DAC loopback : %s\n", | |
666 | val & 0x8000 ? "post" : "pre", | |
667 | val & 0x4000 ? "on" : "off", | |
668 | val & 0x2000 ? "on" : "off", | |
669 | val & 0x1000 ? "on" : "off", | |
670 | val & 0x0200 ? "MIC" : "MIX", | |
671 | val & 0x0100 ? "MIC2" : "MIC1", | |
672 | val & 0x0080 ? "on" : "off"); | |
673 | ||
674 | extid = codec->codec_read(codec, AC97_EXTENDED_ID); | |
675 | cap = extid; | |
676 | len += sprintf (page+len, "Ext Capabilities :%s%s%s%s%s%s%s\n", | |
677 | cap & 0x0001 ? " -var rate PCM audio-" : "", | |
678 | cap & 0x0002 ? " -2x PCM audio out-" : "", | |
679 | cap & 0x0008 ? " -var rate MIC in-" : "", | |
680 | cap & 0x0040 ? " -PCM center DAC-" : "", | |
681 | cap & 0x0080 ? " -PCM surround DAC-" : "", | |
682 | cap & 0x0100 ? " -PCM LFE DAC-" : "", | |
683 | cap & 0x0200 ? " -slot/DAC mappings-" : ""); | |
684 | if (is_ac97_20) { | |
685 | len += sprintf (page+len, "Front DAC rate : %d\n", | |
686 | codec->codec_read(codec, AC97_PCM_FRONT_DAC_RATE)); | |
687 | } | |
688 | ||
689 | return len; | |
690 | } | |
691 | ||
692 | /** | |
693 | * codec_id - Turn id1/id2 into a PnP string | |
694 | * @id1: Vendor ID1 | |
695 | * @id2: Vendor ID2 | |
696 | * @buf: CODEC_ID_BUFSZ byte buffer | |
697 | * | |
698 | * Fills buf with a zero terminated PnP ident string for the id1/id2 | |
699 | * pair. For convenience the return is the passed in buffer pointer. | |
700 | */ | |
701 | ||
702 | static char *codec_id(u16 id1, u16 id2, char *buf) | |
703 | { | |
704 | if(id1&0x8080) { | |
705 | snprintf(buf, CODEC_ID_BUFSZ, "0x%04x:0x%04x", id1, id2); | |
706 | } else { | |
707 | buf[0] = (id1 >> 8); | |
708 | buf[1] = (id1 & 0xFF); | |
709 | buf[2] = (id2 >> 8); | |
710 | snprintf(buf+3, CODEC_ID_BUFSZ - 3, "%d", id2&0xFF); | |
711 | } | |
712 | return buf; | |
713 | } | |
714 | ||
715 | /** | |
716 | * ac97_check_modem - Check if the Codec is a modem | |
717 | * @codec: codec to check | |
718 | * | |
719 | * Return true if the device is an AC97 1.0 or AC97 2.0 modem | |
720 | */ | |
721 | ||
722 | static int ac97_check_modem(struct ac97_codec *codec) | |
723 | { | |
724 | /* Check for an AC97 1.0 soft modem (ID1) */ | |
725 | if(codec->codec_read(codec, AC97_RESET) & 2) | |
726 | return 1; | |
727 | /* Check for an AC97 2.x soft modem */ | |
728 | codec->codec_write(codec, AC97_EXTENDED_MODEM_ID, 0L); | |
729 | if(codec->codec_read(codec, AC97_EXTENDED_MODEM_ID) & 1) | |
730 | return 1; | |
731 | return 0; | |
732 | } | |
733 | ||
734 | ||
735 | /** | |
736 | * ac97_alloc_codec - Allocate an AC97 codec | |
737 | * | |
738 | * Returns a new AC97 codec structure. AC97 codecs may become | |
739 | * refcounted soon so this interface is needed. Returns with | |
740 | * one reference taken. | |
741 | */ | |
742 | ||
743 | struct ac97_codec *ac97_alloc_codec(void) | |
744 | { | |
745 | struct ac97_codec *codec = kmalloc(sizeof(struct ac97_codec), GFP_KERNEL); | |
746 | if(!codec) | |
747 | return NULL; | |
748 | ||
749 | memset(codec, 0, sizeof(*codec)); | |
750 | spin_lock_init(&codec->lock); | |
751 | INIT_LIST_HEAD(&codec->list); | |
752 | return codec; | |
753 | } | |
754 | ||
755 | EXPORT_SYMBOL(ac97_alloc_codec); | |
756 | ||
757 | /** | |
758 | * ac97_release_codec - Release an AC97 codec | |
759 | * @codec: codec to release | |
760 | * | |
761 | * Release an allocated AC97 codec. This will be refcounted in | |
762 | * time but for the moment is trivial. Calls the unregister | |
763 | * handler if the codec is now defunct. | |
764 | */ | |
765 | ||
766 | void ac97_release_codec(struct ac97_codec *codec) | |
767 | { | |
768 | /* Remove from the list first, we don't want to be | |
769 | "rediscovered" */ | |
770 | down(&codec_sem); | |
771 | list_del(&codec->list); | |
772 | up(&codec_sem); | |
773 | /* | |
774 | * The driver needs to deal with internal | |
775 | * locking to avoid accidents here. | |
776 | */ | |
777 | if(codec->driver) | |
778 | codec->driver->remove(codec, codec->driver); | |
779 | kfree(codec); | |
780 | } | |
781 | ||
782 | EXPORT_SYMBOL(ac97_release_codec); | |
783 | ||
784 | /** | |
785 | * ac97_probe_codec - Initialize and setup AC97-compatible codec | |
786 | * @codec: (in/out) Kernel info for a single AC97 codec | |
787 | * | |
788 | * Reset the AC97 codec, then initialize the mixer and | |
789 | * the rest of the @codec structure. | |
790 | * | |
791 | * The codec_read and codec_write fields of @codec are | |
792 | * required to be setup and working when this function | |
793 | * is called. All other fields are set by this function. | |
794 | * | |
795 | * codec_wait field of @codec can optionally be provided | |
796 | * when calling this function. If codec_wait is not %NULL, | |
797 | * this function will call codec_wait any time it is | |
798 | * necessary to wait for the audio chip to reach the | |
799 | * codec-ready state. If codec_wait is %NULL, then | |
800 | * the default behavior is to call schedule_timeout. | |
801 | * Currently codec_wait is used to wait for AC97 codec | |
802 | * reset to complete. | |
803 | * | |
804 | * Some codecs will power down when a register reset is | |
805 | * performed. We now check for such codecs. | |
806 | * | |
807 | * Returns 1 (true) on success, or 0 (false) on failure. | |
808 | */ | |
809 | ||
810 | int ac97_probe_codec(struct ac97_codec *codec) | |
811 | { | |
812 | u16 id1, id2; | |
813 | u16 audio; | |
814 | int i; | |
815 | char cidbuf[CODEC_ID_BUFSZ]; | |
816 | u16 f; | |
817 | struct list_head *l; | |
818 | struct ac97_driver *d; | |
819 | ||
820 | /* wait for codec-ready state */ | |
821 | if (codec->codec_wait) | |
822 | codec->codec_wait(codec); | |
823 | else | |
824 | udelay(10); | |
825 | ||
826 | /* will the codec power down if register reset ? */ | |
827 | id1 = codec->codec_read(codec, AC97_VENDOR_ID1); | |
828 | id2 = codec->codec_read(codec, AC97_VENDOR_ID2); | |
829 | codec->name = NULL; | |
830 | codec->codec_ops = &null_ops; | |
831 | for (i = 0; i < ARRAY_SIZE(ac97_codec_ids); i++) { | |
832 | if (ac97_codec_ids[i].id == ((id1 << 16) | id2)) { | |
833 | codec->type = ac97_codec_ids[i].id; | |
834 | codec->name = ac97_codec_ids[i].name; | |
835 | codec->codec_ops = ac97_codec_ids[i].ops; | |
836 | codec->flags = ac97_codec_ids[i].flags; | |
837 | break; | |
838 | } | |
839 | } | |
840 | ||
841 | codec->model = (id1 << 16) | id2; | |
842 | if ((codec->flags & AC97_DEFAULT_POWER_OFF) == 0) { | |
843 | /* reset codec and wait for the ready bit before we continue */ | |
844 | codec->codec_write(codec, AC97_RESET, 0L); | |
845 | if (codec->codec_wait) | |
846 | codec->codec_wait(codec); | |
847 | else | |
848 | udelay(10); | |
849 | } | |
850 | ||
851 | /* probing AC97 codec, AC97 2.0 says that bit 15 of register 0x00 (reset) should | |
852 | * be read zero. | |
853 | * | |
854 | * FIXME: is the following comment outdated? -jgarzik | |
855 | * Probing of AC97 in this way is not reliable, it is not even SAFE !! | |
856 | */ | |
857 | if ((audio = codec->codec_read(codec, AC97_RESET)) & 0x8000) { | |
858 | printk(KERN_ERR "ac97_codec: %s ac97 codec not present\n", | |
859 | (codec->id & 0x2) ? (codec->id&1 ? "4th" : "Tertiary") | |
860 | : (codec->id&1 ? "Secondary": "Primary")); | |
861 | return 0; | |
862 | } | |
863 | ||
864 | /* probe for Modem Codec */ | |
865 | codec->modem = ac97_check_modem(codec); | |
866 | ||
867 | /* enable SPDIF */ | |
868 | f = codec->codec_read(codec, AC97_EXTENDED_STATUS); | |
869 | if((codec->codec_ops == &null_ops) && (f & 4)) | |
870 | codec->codec_ops = &default_digital_ops; | |
871 | ||
872 | /* A device which thinks its a modem but isnt */ | |
873 | if(codec->flags & AC97_DELUDED_MODEM) | |
874 | codec->modem = 0; | |
875 | ||
876 | if (codec->name == NULL) | |
877 | codec->name = "Unknown"; | |
878 | printk(KERN_INFO "ac97_codec: AC97 %s codec, id: %s (%s)\n", | |
879 | codec->modem ? "Modem" : (audio ? "Audio" : ""), | |
880 | codec_id(id1, id2, cidbuf), codec->name); | |
881 | ||
882 | if(!ac97_init_mixer(codec)) | |
883 | return 0; | |
884 | ||
885 | /* | |
886 | * Attach last so the caller can override the mixer | |
887 | * callbacks. | |
888 | */ | |
889 | ||
890 | down(&codec_sem); | |
891 | list_add(&codec->list, &codecs); | |
892 | ||
893 | list_for_each(l, &codec_drivers) { | |
894 | d = list_entry(l, struct ac97_driver, list); | |
895 | if ((codec->model ^ d->codec_id) & d->codec_mask) | |
896 | continue; | |
897 | if(d->probe(codec, d) == 0) | |
898 | { | |
899 | codec->driver = d; | |
900 | break; | |
901 | } | |
902 | } | |
903 | ||
904 | up(&codec_sem); | |
905 | return 1; | |
906 | } | |
907 | ||
908 | static int ac97_init_mixer(struct ac97_codec *codec) | |
909 | { | |
910 | u16 cap; | |
911 | int i; | |
912 | ||
913 | cap = codec->codec_read(codec, AC97_RESET); | |
914 | ||
915 | /* mixer masks */ | |
916 | codec->supported_mixers = AC97_SUPPORTED_MASK; | |
917 | codec->stereo_mixers = AC97_STEREO_MASK; | |
918 | codec->record_sources = AC97_RECORD_MASK; | |
919 | if (!(cap & 0x04)) | |
920 | codec->supported_mixers &= ~(SOUND_MASK_BASS|SOUND_MASK_TREBLE); | |
921 | if (!(cap & 0x10)) | |
922 | codec->supported_mixers &= ~SOUND_MASK_ALTPCM; | |
923 | ||
924 | ||
925 | /* detect bit resolution */ | |
926 | codec->codec_write(codec, AC97_MASTER_VOL_STEREO, 0x2020); | |
927 | if(codec->codec_read(codec, AC97_MASTER_VOL_STEREO) == 0x2020) | |
928 | codec->bit_resolution = 6; | |
929 | else | |
930 | codec->bit_resolution = 5; | |
931 | ||
932 | /* generic OSS to AC97 wrapper */ | |
933 | codec->read_mixer = ac97_read_mixer; | |
934 | codec->write_mixer = ac97_write_mixer; | |
935 | codec->recmask_io = ac97_recmask_io; | |
936 | codec->mixer_ioctl = ac97_mixer_ioctl; | |
937 | ||
938 | /* initialize mixer channel volumes */ | |
939 | for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) { | |
940 | struct mixer_defaults *md = &mixer_defaults[i]; | |
941 | if (md->mixer == -1) | |
942 | break; | |
943 | if (!supported_mixer(codec, md->mixer)) | |
944 | continue; | |
945 | ac97_set_mixer(codec, md->mixer, md->value); | |
946 | } | |
947 | ||
948 | /* codec specific initialization for 4-6 channel output or secondary codec stuff */ | |
949 | if (codec->codec_ops->init != NULL) { | |
950 | codec->codec_ops->init(codec); | |
951 | } | |
952 | ||
953 | /* | |
954 | * Volume is MUTE only on this device. We have to initialise | |
955 | * it but its useless beyond that. | |
956 | */ | |
957 | if(codec->flags & AC97_NO_PCM_VOLUME) | |
958 | { | |
959 | codec->supported_mixers &= ~SOUND_MASK_PCM; | |
960 | printk(KERN_WARNING "AC97 codec does not have proper volume support.\n"); | |
961 | } | |
962 | return 1; | |
963 | } | |
964 | ||
965 | #define AC97_SIGMATEL_ANALOG 0x6c /* Analog Special */ | |
966 | #define AC97_SIGMATEL_DAC2INVERT 0x6e | |
967 | #define AC97_SIGMATEL_BIAS1 0x70 | |
968 | #define AC97_SIGMATEL_BIAS2 0x72 | |
969 | #define AC97_SIGMATEL_MULTICHN 0x74 /* Multi-Channel programming */ | |
970 | #define AC97_SIGMATEL_CIC1 0x76 | |
971 | #define AC97_SIGMATEL_CIC2 0x78 | |
972 | ||
973 | ||
974 | static int sigmatel_9708_init(struct ac97_codec * codec) | |
975 | { | |
976 | u16 codec72, codec6c; | |
977 | ||
978 | codec72 = codec->codec_read(codec, AC97_SIGMATEL_BIAS2) & 0x8000; | |
979 | codec6c = codec->codec_read(codec, AC97_SIGMATEL_ANALOG); | |
980 | ||
981 | if ((codec72==0) && (codec6c==0)) { | |
982 | codec->codec_write(codec, AC97_SIGMATEL_CIC1, 0xabba); | |
983 | codec->codec_write(codec, AC97_SIGMATEL_CIC2, 0x1000); | |
984 | codec->codec_write(codec, AC97_SIGMATEL_BIAS1, 0xabba); | |
985 | codec->codec_write(codec, AC97_SIGMATEL_BIAS2, 0x0007); | |
986 | } else if ((codec72==0x8000) && (codec6c==0)) { | |
987 | codec->codec_write(codec, AC97_SIGMATEL_CIC1, 0xabba); | |
988 | codec->codec_write(codec, AC97_SIGMATEL_CIC2, 0x1001); | |
989 | codec->codec_write(codec, AC97_SIGMATEL_DAC2INVERT, 0x0008); | |
990 | } else if ((codec72==0x8000) && (codec6c==0x0080)) { | |
991 | /* nothing */ | |
992 | } | |
993 | codec->codec_write(codec, AC97_SIGMATEL_MULTICHN, 0x0000); | |
994 | return 0; | |
995 | } | |
996 | ||
997 | ||
998 | static int sigmatel_9721_init(struct ac97_codec * codec) | |
999 | { | |
1000 | /* Only set up secondary codec */ | |
1001 | if (codec->id == 0) | |
1002 | return 0; | |
1003 | ||
1004 | codec->codec_write(codec, AC97_SURROUND_MASTER, 0L); | |
1005 | ||
1006 | /* initialize SigmaTel STAC9721/23 as secondary codec, decoding AC link | |
1007 | sloc 3,4 = 0x01, slot 7,8 = 0x00, */ | |
1008 | codec->codec_write(codec, AC97_SIGMATEL_MULTICHN, 0x00); | |
1009 | ||
1010 | /* we don't have the crystal when we are on an AMR card, so use | |
1011 | BIT_CLK as our clock source. Write the magic word ABBA and read | |
1012 | back to enable register 0x78 */ | |
1013 | codec->codec_write(codec, AC97_SIGMATEL_CIC1, 0xabba); | |
1014 | codec->codec_read(codec, AC97_SIGMATEL_CIC1); | |
1015 | ||
1016 | /* sync all the clocks*/ | |
1017 | codec->codec_write(codec, AC97_SIGMATEL_CIC2, 0x3802); | |
1018 | ||
1019 | return 0; | |
1020 | } | |
1021 | ||
1022 | ||
1023 | static int sigmatel_9744_init(struct ac97_codec * codec) | |
1024 | { | |
1025 | // patch for SigmaTel | |
1026 | codec->codec_write(codec, AC97_SIGMATEL_CIC1, 0xabba); | |
1027 | codec->codec_write(codec, AC97_SIGMATEL_CIC2, 0x0000); // is this correct? --jk | |
1028 | codec->codec_write(codec, AC97_SIGMATEL_BIAS1, 0xabba); | |
1029 | codec->codec_write(codec, AC97_SIGMATEL_BIAS2, 0x0002); | |
1030 | codec->codec_write(codec, AC97_SIGMATEL_MULTICHN, 0x0000); | |
1031 | return 0; | |
1032 | } | |
1033 | ||
1034 | static int cmedia_init(struct ac97_codec *codec) | |
1035 | { | |
1036 | /* Initialise the CMedia 9739 */ | |
1037 | /* | |
1038 | We could set various options here | |
1039 | Register 0x20 bit 0x100 sets mic as center bass | |
1040 | Also do multi_channel_ctrl &=~0x3000 |=0x1000 | |
1041 | ||
1042 | For now we set up the GPIO and PC beep | |
1043 | */ | |
1044 | ||
1045 | u16 v; | |
1046 | ||
1047 | /* MIC */ | |
1048 | codec->codec_write(codec, 0x64, 0x3000); | |
1049 | v = codec->codec_read(codec, 0x64); | |
1050 | v &= ~0x8000; | |
1051 | codec->codec_write(codec, 0x64, v); | |
1052 | codec->codec_write(codec, 0x70, 0x0100); | |
1053 | codec->codec_write(codec, 0x72, 0x0020); | |
1054 | return 0; | |
1055 | } | |
1056 | ||
1057 | #define AC97_WM97XX_FMIXER_VOL 0x72 | |
1058 | #define AC97_WM97XX_RMIXER_VOL 0x74 | |
1059 | #define AC97_WM97XX_TEST 0x5a | |
1060 | #define AC97_WM9704_RPCM_VOL 0x70 | |
1061 | #define AC97_WM9711_OUT3VOL 0x16 | |
1062 | ||
1063 | static int wolfson_init03(struct ac97_codec * codec) | |
1064 | { | |
1065 | /* this is known to work for the ViewSonic ViewPad 1000 */ | |
1066 | codec->codec_write(codec, AC97_WM97XX_FMIXER_VOL, 0x0808); | |
1067 | codec->codec_write(codec, AC97_GENERAL_PURPOSE, 0x8000); | |
1068 | return 0; | |
1069 | } | |
1070 | ||
1071 | static int wolfson_init04(struct ac97_codec * codec) | |
1072 | { | |
1073 | codec->codec_write(codec, AC97_WM97XX_FMIXER_VOL, 0x0808); | |
1074 | codec->codec_write(codec, AC97_WM97XX_RMIXER_VOL, 0x0808); | |
1075 | ||
1076 | // patch for DVD noise | |
1077 | codec->codec_write(codec, AC97_WM97XX_TEST, 0x0200); | |
1078 | ||
1079 | // init vol as PCM vol | |
1080 | codec->codec_write(codec, AC97_WM9704_RPCM_VOL, | |
1081 | codec->codec_read(codec, AC97_PCMOUT_VOL)); | |
1082 | ||
1083 | /* set rear surround volume */ | |
1084 | codec->codec_write(codec, AC97_SURROUND_MASTER, 0x0000); | |
1085 | return 0; | |
1086 | } | |
1087 | ||
1088 | /* WM9705, WM9710 */ | |
1089 | static int wolfson_init05(struct ac97_codec * codec) | |
1090 | { | |
1091 | /* set front mixer volume */ | |
1092 | codec->codec_write(codec, AC97_WM97XX_FMIXER_VOL, 0x0808); | |
1093 | return 0; | |
1094 | } | |
1095 | ||
1096 | /* WM9711, WM9712 */ | |
1097 | static int wolfson_init11(struct ac97_codec * codec) | |
1098 | { | |
1099 | /* stop pop's during suspend/resume */ | |
1100 | codec->codec_write(codec, AC97_WM97XX_TEST, | |
1101 | codec->codec_read(codec, AC97_WM97XX_TEST) & 0xffbf); | |
1102 | ||
1103 | /* set out3 volume */ | |
1104 | codec->codec_write(codec, AC97_WM9711_OUT3VOL, 0x0808); | |
1105 | return 0; | |
1106 | } | |
1107 | ||
1108 | /* WM9713 */ | |
1109 | static int wolfson_init13(struct ac97_codec * codec) | |
1110 | { | |
1111 | codec->codec_write(codec, AC97_RECORD_GAIN, 0x00a0); | |
1112 | codec->codec_write(codec, AC97_POWER_CONTROL, 0x0000); | |
1113 | codec->codec_write(codec, AC97_EXTENDED_MODEM_ID, 0xDA00); | |
1114 | codec->codec_write(codec, AC97_EXTEND_MODEM_STAT, 0x3810); | |
1115 | codec->codec_write(codec, AC97_PHONE_VOL, 0x0808); | |
1116 | codec->codec_write(codec, AC97_PCBEEP_VOL, 0x0808); | |
1117 | ||
1118 | return 0; | |
1119 | } | |
1120 | ||
1121 | static int tritech_init(struct ac97_codec * codec) | |
1122 | { | |
1123 | codec->codec_write(codec, 0x26, 0x0300); | |
1124 | codec->codec_write(codec, 0x26, 0x0000); | |
1125 | codec->codec_write(codec, AC97_SURROUND_MASTER, 0x0000); | |
1126 | codec->codec_write(codec, AC97_RESERVED_3A, 0x0000); | |
1127 | return 0; | |
1128 | } | |
1129 | ||
1130 | ||
1131 | /* copied from drivers/sound/maestro.c */ | |
1132 | static int tritech_maestro_init(struct ac97_codec * codec) | |
1133 | { | |
1134 | /* no idea what this does */ | |
1135 | codec->codec_write(codec, 0x2A, 0x0001); | |
1136 | codec->codec_write(codec, 0x2C, 0x0000); | |
1137 | codec->codec_write(codec, 0x2C, 0XFFFF); | |
1138 | return 0; | |
1139 | } | |
1140 | ||
1141 | ||
1142 | ||
1143 | /* | |
1144 | * Presario700 workaround | |
1145 | * for Jack Sense/SPDIF Register mis-setting causing | |
1146 | * no audible output | |
1147 | * by Santiago Nullo 04/05/2002 | |
1148 | */ | |
1149 | ||
1150 | #define AC97_AD1886_JACK_SENSE 0x72 | |
1151 | ||
1152 | static int ad1886_init(struct ac97_codec * codec) | |
1153 | { | |
1154 | /* from AD1886 Specs */ | |
1155 | codec->codec_write(codec, AC97_AD1886_JACK_SENSE, 0x0010); | |
1156 | return 0; | |
1157 | } | |
1158 | ||
1159 | ||
1160 | ||
1161 | ||
1162 | /* | |
1163 | * This is basically standard AC97. It should work as a default for | |
1164 | * almost all modern codecs. Note that some cards wire EAPD *backwards* | |
1165 | * That side of it is up to the card driver not us to cope with. | |
1166 | * | |
1167 | */ | |
1168 | ||
1169 | static int eapd_control(struct ac97_codec * codec, int on) | |
1170 | { | |
1171 | if(on) | |
1172 | codec->codec_write(codec, AC97_POWER_CONTROL, | |
1173 | codec->codec_read(codec, AC97_POWER_CONTROL)|0x8000); | |
1174 | else | |
1175 | codec->codec_write(codec, AC97_POWER_CONTROL, | |
1176 | codec->codec_read(codec, AC97_POWER_CONTROL)&~0x8000); | |
1177 | return 0; | |
1178 | } | |
1179 | ||
1180 | static int generic_digital_control(struct ac97_codec *codec, int slots, int rate, int mode) | |
1181 | { | |
1182 | u16 reg; | |
1183 | ||
1184 | reg = codec->codec_read(codec, AC97_SPDIF_CONTROL); | |
1185 | ||
1186 | switch(rate) | |
1187 | { | |
1188 | /* Off by default */ | |
1189 | default: | |
1190 | case 0: | |
1191 | reg = codec->codec_read(codec, AC97_EXTENDED_STATUS); | |
1192 | codec->codec_write(codec, AC97_EXTENDED_STATUS, (reg & ~AC97_EA_SPDIF)); | |
1193 | if(rate == 0) | |
1194 | return 0; | |
1195 | return -EINVAL; | |
1196 | case 1: | |
1197 | reg = (reg & AC97_SC_SPSR_MASK) | AC97_SC_SPSR_48K; | |
1198 | break; | |
1199 | case 2: | |
1200 | reg = (reg & AC97_SC_SPSR_MASK) | AC97_SC_SPSR_44K; | |
1201 | break; | |
1202 | case 3: | |
1203 | reg = (reg & AC97_SC_SPSR_MASK) | AC97_SC_SPSR_32K; | |
1204 | break; | |
1205 | } | |
1206 | ||
1207 | reg &= ~AC97_SC_CC_MASK; | |
1208 | reg |= (mode & AUDIO_CCMASK) << 6; | |
1209 | ||
1210 | if(mode & AUDIO_DIGITAL) | |
1211 | reg |= 2; | |
1212 | if(mode & AUDIO_PRO) | |
1213 | reg |= 1; | |
1214 | if(mode & AUDIO_DRS) | |
1215 | reg |= 0x4000; | |
1216 | ||
1217 | codec->codec_write(codec, AC97_SPDIF_CONTROL, reg); | |
1218 | ||
1219 | reg = codec->codec_read(codec, AC97_EXTENDED_STATUS); | |
1220 | reg &= (AC97_EA_SLOT_MASK); | |
1221 | reg |= AC97_EA_VRA | AC97_EA_SPDIF | slots; | |
1222 | codec->codec_write(codec, AC97_EXTENDED_STATUS, reg); | |
1223 | ||
1224 | reg = codec->codec_read(codec, AC97_EXTENDED_STATUS); | |
1225 | if(!(reg & 0x0400)) | |
1226 | { | |
1227 | codec->codec_write(codec, AC97_EXTENDED_STATUS, reg & ~ AC97_EA_SPDIF); | |
1228 | return -EINVAL; | |
1229 | } | |
1230 | return 0; | |
1231 | } | |
1232 | ||
1233 | /* | |
1234 | * Crystal digital audio control (CS4299) | |
1235 | */ | |
1236 | ||
1237 | static int crystal_digital_control(struct ac97_codec *codec, int slots, int rate, int mode) | |
1238 | { | |
1239 | u16 cv; | |
1240 | ||
1241 | if(mode & AUDIO_DIGITAL) | |
1242 | return -EINVAL; | |
1243 | ||
1244 | switch(rate) | |
1245 | { | |
1246 | case 0: cv = 0x0; break; /* SPEN off */ | |
1247 | case 48000: cv = 0x8004; break; /* 48KHz digital */ | |
1248 | case 44100: cv = 0x8104; break; /* 44.1KHz digital */ | |
1249 | case 32768: /* 32Khz */ | |
1250 | default: | |
1251 | return -EINVAL; | |
1252 | } | |
1253 | codec->codec_write(codec, 0x68, cv); | |
1254 | return 0; | |
1255 | } | |
1256 | ||
1257 | /* | |
1258 | * CMedia digital audio control | |
1259 | * Needs more work. | |
1260 | */ | |
1261 | ||
1262 | static int cmedia_digital_control(struct ac97_codec *codec, int slots, int rate, int mode) | |
1263 | { | |
1264 | u16 cv; | |
1265 | ||
1266 | if(mode & AUDIO_DIGITAL) | |
1267 | return -EINVAL; | |
1268 | ||
1269 | switch(rate) | |
1270 | { | |
1271 | case 0: cv = 0x0001; break; /* SPEN off */ | |
1272 | case 48000: cv = 0x0009; break; /* 48KHz digital */ | |
1273 | default: | |
1274 | return -EINVAL; | |
1275 | } | |
1276 | codec->codec_write(codec, 0x2A, 0x05c4); | |
1277 | codec->codec_write(codec, 0x6C, cv); | |
1278 | ||
1279 | /* Switch on mix to surround */ | |
1280 | cv = codec->codec_read(codec, 0x64); | |
1281 | cv &= ~0x0200; | |
1282 | if(mode) | |
1283 | cv |= 0x0200; | |
1284 | codec->codec_write(codec, 0x64, cv); | |
1285 | return 0; | |
1286 | } | |
1287 | ||
1288 | ||
1289 | /* copied from drivers/sound/maestro.c */ | |
1290 | #if 0 /* there has been 1 person on the planet with a pt101 that we | |
1291 | know of. If they care, they can put this back in :) */ | |
1292 | static int pt101_init(struct ac97_codec * codec) | |
1293 | { | |
1294 | printk(KERN_INFO "ac97_codec: PT101 Codec detected, initializing but _not_ installing mixer device.\n"); | |
1295 | /* who knows.. */ | |
1296 | codec->codec_write(codec, 0x2A, 0x0001); | |
1297 | codec->codec_write(codec, 0x2C, 0x0000); | |
1298 | codec->codec_write(codec, 0x2C, 0xFFFF); | |
1299 | codec->codec_write(codec, 0x10, 0x9F1F); | |
1300 | codec->codec_write(codec, 0x12, 0x0808); | |
1301 | codec->codec_write(codec, 0x14, 0x9F1F); | |
1302 | codec->codec_write(codec, 0x16, 0x9F1F); | |
1303 | codec->codec_write(codec, 0x18, 0x0404); | |
1304 | codec->codec_write(codec, 0x1A, 0x0000); | |
1305 | codec->codec_write(codec, 0x1C, 0x0000); | |
1306 | codec->codec_write(codec, 0x02, 0x0404); | |
1307 | codec->codec_write(codec, 0x04, 0x0808); | |
1308 | codec->codec_write(codec, 0x0C, 0x801F); | |
1309 | codec->codec_write(codec, 0x0E, 0x801F); | |
1310 | return 0; | |
1311 | } | |
1312 | #endif | |
1313 | ||
1314 | ||
1315 | EXPORT_SYMBOL(ac97_read_proc); | |
1316 | EXPORT_SYMBOL(ac97_probe_codec); | |
1317 | ||
1318 | /* | |
1319 | * AC97 library support routines | |
1320 | */ | |
1321 | ||
1322 | /** | |
1323 | * ac97_set_dac_rate - set codec rate adaption | |
1324 | * @codec: ac97 code | |
1325 | * @rate: rate in hertz | |
1326 | * | |
1327 | * Set the DAC rate. Assumes the codec supports VRA. The caller is | |
1328 | * expected to have checked this little detail. | |
1329 | */ | |
1330 | ||
1331 | unsigned int ac97_set_dac_rate(struct ac97_codec *codec, unsigned int rate) | |
1332 | { | |
1333 | unsigned int new_rate = rate; | |
1334 | u32 dacp; | |
1335 | u32 mast_vol, phone_vol, mono_vol, pcm_vol; | |
1336 | u32 mute_vol = 0x8000; /* The mute volume? */ | |
1337 | ||
1338 | if(rate != codec->codec_read(codec, AC97_PCM_FRONT_DAC_RATE)) | |
1339 | { | |
1340 | /* Mute several registers */ | |
1341 | mast_vol = codec->codec_read(codec, AC97_MASTER_VOL_STEREO); | |
1342 | mono_vol = codec->codec_read(codec, AC97_MASTER_VOL_MONO); | |
1343 | phone_vol = codec->codec_read(codec, AC97_HEADPHONE_VOL); | |
1344 | pcm_vol = codec->codec_read(codec, AC97_PCMOUT_VOL); | |
1345 | codec->codec_write(codec, AC97_MASTER_VOL_STEREO, mute_vol); | |
1346 | codec->codec_write(codec, AC97_MASTER_VOL_MONO, mute_vol); | |
1347 | codec->codec_write(codec, AC97_HEADPHONE_VOL, mute_vol); | |
1348 | codec->codec_write(codec, AC97_PCMOUT_VOL, mute_vol); | |
1349 | ||
1350 | /* Power down the DAC */ | |
1351 | dacp=codec->codec_read(codec, AC97_POWER_CONTROL); | |
1352 | codec->codec_write(codec, AC97_POWER_CONTROL, dacp|0x0200); | |
1353 | /* Load the rate and read the effective rate */ | |
1354 | codec->codec_write(codec, AC97_PCM_FRONT_DAC_RATE, rate); | |
1355 | new_rate=codec->codec_read(codec, AC97_PCM_FRONT_DAC_RATE); | |
1356 | /* Power it back up */ | |
1357 | codec->codec_write(codec, AC97_POWER_CONTROL, dacp); | |
1358 | ||
1359 | /* Restore volumes */ | |
1360 | codec->codec_write(codec, AC97_MASTER_VOL_STEREO, mast_vol); | |
1361 | codec->codec_write(codec, AC97_MASTER_VOL_MONO, mono_vol); | |
1362 | codec->codec_write(codec, AC97_HEADPHONE_VOL, phone_vol); | |
1363 | codec->codec_write(codec, AC97_PCMOUT_VOL, pcm_vol); | |
1364 | } | |
1365 | return new_rate; | |
1366 | } | |
1367 | ||
1368 | EXPORT_SYMBOL(ac97_set_dac_rate); | |
1369 | ||
1370 | /** | |
1371 | * ac97_set_adc_rate - set codec rate adaption | |
1372 | * @codec: ac97 code | |
1373 | * @rate: rate in hertz | |
1374 | * | |
1375 | * Set the ADC rate. Assumes the codec supports VRA. The caller is | |
1376 | * expected to have checked this little detail. | |
1377 | */ | |
1378 | ||
1379 | unsigned int ac97_set_adc_rate(struct ac97_codec *codec, unsigned int rate) | |
1380 | { | |
1381 | unsigned int new_rate = rate; | |
1382 | u32 dacp; | |
1383 | ||
1384 | if(rate != codec->codec_read(codec, AC97_PCM_LR_ADC_RATE)) | |
1385 | { | |
1386 | /* Power down the ADC */ | |
1387 | dacp=codec->codec_read(codec, AC97_POWER_CONTROL); | |
1388 | codec->codec_write(codec, AC97_POWER_CONTROL, dacp|0x0100); | |
1389 | /* Load the rate and read the effective rate */ | |
1390 | codec->codec_write(codec, AC97_PCM_LR_ADC_RATE, rate); | |
1391 | new_rate=codec->codec_read(codec, AC97_PCM_LR_ADC_RATE); | |
1392 | /* Power it back up */ | |
1393 | codec->codec_write(codec, AC97_POWER_CONTROL, dacp); | |
1394 | } | |
1395 | return new_rate; | |
1396 | } | |
1397 | ||
1398 | EXPORT_SYMBOL(ac97_set_adc_rate); | |
1399 | ||
1400 | int ac97_save_state(struct ac97_codec *codec) | |
1401 | { | |
1402 | return 0; | |
1403 | } | |
1404 | ||
1405 | EXPORT_SYMBOL(ac97_save_state); | |
1406 | ||
1407 | int ac97_restore_state(struct ac97_codec *codec) | |
1408 | { | |
1409 | int i; | |
1410 | unsigned int left, right, val; | |
1411 | ||
1412 | for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) { | |
1413 | if (!supported_mixer(codec, i)) | |
1414 | continue; | |
1415 | ||
1416 | val = codec->mixer_state[i]; | |
1417 | right = val >> 8; | |
1418 | left = val & 0xff; | |
1419 | codec->write_mixer(codec, i, left, right); | |
1420 | } | |
1421 | return 0; | |
1422 | } | |
1423 | ||
1424 | EXPORT_SYMBOL(ac97_restore_state); | |
1425 | ||
1426 | /** | |
1427 | * ac97_register_driver - register a codec helper | |
1428 | * @driver: Driver handler | |
1429 | * | |
1430 | * Register a handler for codecs matching the codec id. The handler | |
1431 | * attach function is called for all present codecs and will be | |
1432 | * called when new codecs are discovered. | |
1433 | */ | |
1434 | ||
1435 | int ac97_register_driver(struct ac97_driver *driver) | |
1436 | { | |
1437 | struct list_head *l; | |
1438 | struct ac97_codec *c; | |
1439 | ||
1440 | down(&codec_sem); | |
1441 | INIT_LIST_HEAD(&driver->list); | |
1442 | list_add(&driver->list, &codec_drivers); | |
1443 | ||
1444 | list_for_each(l, &codecs) | |
1445 | { | |
1446 | c = list_entry(l, struct ac97_codec, list); | |
1447 | if(c->driver != NULL || ((c->model ^ driver->codec_id) & driver->codec_mask)) | |
1448 | continue; | |
1449 | if(driver->probe(c, driver)) | |
1450 | continue; | |
1451 | c->driver = driver; | |
1452 | } | |
1453 | up(&codec_sem); | |
1454 | return 0; | |
1455 | } | |
1456 | ||
1457 | EXPORT_SYMBOL_GPL(ac97_register_driver); | |
1458 | ||
1459 | /** | |
1460 | * ac97_unregister_driver - unregister a codec helper | |
1461 | * @driver: Driver handler | |
1462 | * | |
1463 | * Unregister a handler for codecs matching the codec id. The handler | |
1464 | * remove function is called for all matching codecs. | |
1465 | */ | |
1466 | ||
1467 | void ac97_unregister_driver(struct ac97_driver *driver) | |
1468 | { | |
1469 | struct list_head *l; | |
1470 | struct ac97_codec *c; | |
1471 | ||
1472 | down(&codec_sem); | |
1473 | list_del_init(&driver->list); | |
1474 | ||
1475 | list_for_each(l, &codecs) | |
1476 | { | |
1477 | c = list_entry(l, struct ac97_codec, list); | |
1478 | if (c->driver == driver) { | |
1479 | driver->remove(c, driver); | |
1480 | c->driver = NULL; | |
1481 | } | |
1482 | } | |
1483 | ||
1484 | up(&codec_sem); | |
1485 | } | |
1486 | ||
1487 | EXPORT_SYMBOL_GPL(ac97_unregister_driver); | |
1488 | ||
1489 | static int swap_headphone(int remove_master) | |
1490 | { | |
1491 | struct list_head *l; | |
1492 | struct ac97_codec *c; | |
1493 | ||
1494 | if (remove_master) { | |
1495 | down(&codec_sem); | |
1496 | list_for_each(l, &codecs) | |
1497 | { | |
1498 | c = list_entry(l, struct ac97_codec, list); | |
1499 | if (supported_mixer(c, SOUND_MIXER_PHONEOUT)) | |
1500 | c->supported_mixers &= ~SOUND_MASK_PHONEOUT; | |
1501 | } | |
1502 | up(&codec_sem); | |
1503 | } else | |
1504 | ac97_hw[SOUND_MIXER_PHONEOUT].offset = AC97_MASTER_VOL_STEREO; | |
1505 | ||
1506 | /* Scale values already match */ | |
1507 | ac97_hw[SOUND_MIXER_VOLUME].offset = AC97_MASTER_VOL_MONO; | |
1508 | return 0; | |
1509 | } | |
1510 | ||
1511 | static int apply_quirk(int quirk) | |
1512 | { | |
1513 | switch (quirk) { | |
1514 | case AC97_TUNE_NONE: | |
1515 | return 0; | |
1516 | case AC97_TUNE_HP_ONLY: | |
1517 | return swap_headphone(1); | |
1518 | case AC97_TUNE_SWAP_HP: | |
1519 | return swap_headphone(0); | |
1520 | case AC97_TUNE_SWAP_SURROUND: | |
1521 | return -ENOSYS; /* not yet implemented */ | |
1522 | case AC97_TUNE_AD_SHARING: | |
1523 | return -ENOSYS; /* not yet implemented */ | |
1524 | case AC97_TUNE_ALC_JACK: | |
1525 | return -ENOSYS; /* not yet implemented */ | |
1526 | } | |
1527 | return -EINVAL; | |
1528 | } | |
1529 | ||
1530 | /** | |
1531 | * ac97_tune_hardware - tune up the hardware | |
1532 | * @pdev: pci_dev pointer | |
1533 | * @quirk: quirk list | |
1534 | * @override: explicit quirk value (overrides if not AC97_TUNE_DEFAULT) | |
1535 | * | |
1536 | * Do some workaround for each pci device, such as renaming of the | |
1537 | * headphone (true line-out) control as "Master". | |
1538 | * The quirk-list must be terminated with a zero-filled entry. | |
1539 | * | |
1540 | * Returns zero if successful, or a negative error code on failure. | |
1541 | */ | |
1542 | ||
1543 | int ac97_tune_hardware(struct pci_dev *pdev, struct ac97_quirk *quirk, int override) | |
1544 | { | |
1545 | int result; | |
1546 | ||
1547 | if (!quirk) | |
1548 | return -EINVAL; | |
1549 | ||
1550 | if (override != AC97_TUNE_DEFAULT) { | |
1551 | result = apply_quirk(override); | |
1552 | if (result < 0) | |
1553 | printk(KERN_ERR "applying quirk type %d failed (%d)\n", override, result); | |
1554 | return result; | |
1555 | } | |
1556 | ||
1557 | for (; quirk->vendor; quirk++) { | |
1558 | if (quirk->vendor != pdev->subsystem_vendor) | |
1559 | continue; | |
1560 | if ((! quirk->mask && quirk->device == pdev->subsystem_device) || | |
1561 | quirk->device == (quirk->mask & pdev->subsystem_device)) { | |
1562 | #ifdef DEBUG | |
1563 | printk("ac97 quirk for %s (%04x:%04x)\n", quirk->name, ac97->subsystem_vendor, pdev->subsystem_device); | |
1564 | #endif | |
1565 | result = apply_quirk(quirk->type); | |
1566 | if (result < 0) | |
1567 | printk(KERN_ERR "applying quirk type %d for %s failed (%d)\n", quirk->type, quirk->name, result); | |
1568 | return result; | |
1569 | } | |
1570 | } | |
1571 | return 0; | |
1572 | } | |
1573 | ||
1574 | EXPORT_SYMBOL_GPL(ac97_tune_hardware); | |
1575 | ||
1576 | MODULE_LICENSE("GPL"); |