1 | /* SPDX-License-Identifier: GPL-2.0+ |
2 | * |
3 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz> |
4 | * Universal interface for Audio Codec '97 |
5 | * |
6 | * For more details look to AC '97 component specification revision 2.1 |
7 | * by Intel Corporation (http://developer.intel.com). |
8 | */ |
9 | |
10 | #ifndef __SOUND_AC97_CODEC_H |
11 | #define __SOUND_AC97_CODEC_H |
12 | |
13 | #include <linux/bitops.h> |
14 | #include <linux/device.h> |
15 | #include <linux/workqueue.h> |
16 | #include <sound/ac97/regs.h> |
17 | #include <sound/pcm.h> |
18 | #include <sound/control.h> |
19 | #include <sound/info.h> |
20 | |
21 | /* maximum number of devices on the AC97 bus */ |
22 | #define AC97_BUS_MAX_DEVICES 4 |
23 | |
24 | /* specific - SigmaTel */ |
25 | #define AC97_SIGMATEL_OUTSEL 0x64 /* Output Select, STAC9758 */ |
26 | #define AC97_SIGMATEL_INSEL 0x66 /* Input Select, STAC9758 */ |
27 | #define AC97_SIGMATEL_IOMISC 0x68 /* STAC9758 */ |
28 | #define AC97_SIGMATEL_ANALOG 0x6c /* Analog Special */ |
29 | #define AC97_SIGMATEL_DAC2INVERT 0x6e |
30 | #define AC97_SIGMATEL_BIAS1 0x70 |
31 | #define AC97_SIGMATEL_BIAS2 0x72 |
32 | #define AC97_SIGMATEL_VARIOUS 0x72 /* STAC9758 */ |
33 | #define AC97_SIGMATEL_MULTICHN 0x74 /* Multi-Channel programming */ |
34 | #define AC97_SIGMATEL_CIC1 0x76 |
35 | #define AC97_SIGMATEL_CIC2 0x78 |
36 | |
37 | /* specific - Analog Devices */ |
38 | #define AC97_AD_TEST 0x5a /* test register */ |
39 | #define AC97_AD_TEST2 0x5c /* undocumented test register 2 */ |
40 | #define AC97_AD_HPFD_SHIFT 12 /* High Pass Filter Disable */ |
41 | #define AC97_AD_CODEC_CFG 0x70 /* codec configuration */ |
42 | #define AC97_AD_JACK_SPDIF 0x72 /* Jack Sense & S/PDIF */ |
43 | #define AC97_AD_SERIAL_CFG 0x74 /* Serial Configuration */ |
44 | #define AC97_AD_MISC 0x76 /* Misc Control Bits */ |
45 | #define AC97_AD_VREFD_SHIFT 2 /* V_REFOUT Disable (AD1888) */ |
46 | |
47 | /* specific - Cirrus Logic */ |
48 | #define AC97_CSR_ACMODE 0x5e /* AC Mode Register */ |
49 | #define AC97_CSR_MISC_CRYSTAL 0x60 /* Misc Crystal Control */ |
50 | #define AC97_CSR_SPDIF 0x68 /* S/PDIF Register */ |
51 | #define AC97_CSR_SERIAL 0x6a /* Serial Port Control */ |
52 | #define AC97_CSR_SPECF_ADDR 0x6c /* Special Feature Address */ |
53 | #define AC97_CSR_SPECF_DATA 0x6e /* Special Feature Data */ |
54 | #define AC97_CSR_BDI_STATUS 0x7a /* BDI Status */ |
55 | |
56 | /* specific - Conexant */ |
57 | #define AC97_CXR_AUDIO_MISC 0x5c |
58 | #define AC97_CXR_SPDIFEN (1<<3) |
59 | #define AC97_CXR_COPYRGT (1<<2) |
60 | #define AC97_CXR_SPDIF_MASK (3<<0) |
61 | #define AC97_CXR_SPDIF_PCM 0x0 |
62 | #define AC97_CXR_SPDIF_AC3 0x2 |
63 | |
64 | /* specific - ALC */ |
65 | #define AC97_ALC650_SPDIF_INPUT_STATUS1 0x60 |
66 | /* S/PDIF input status 1 bit defines */ |
67 | #define AC97_ALC650_PRO 0x0001 /* Professional status */ |
68 | #define AC97_ALC650_NAUDIO 0x0002 /* Non audio stream */ |
69 | #define AC97_ALC650_COPY 0x0004 /* Copyright status */ |
70 | #define AC97_ALC650_PRE 0x0038 /* Preemphasis status */ |
71 | #define AC97_ALC650_PRE_SHIFT 3 |
72 | #define AC97_ALC650_MODE 0x00C0 /* Preemphasis status */ |
73 | #define AC97_ALC650_MODE_SHIFT 6 |
74 | #define AC97_ALC650_CC_MASK 0x7f00 /* Category Code mask */ |
75 | #define AC97_ALC650_CC_SHIFT 8 |
76 | #define AC97_ALC650_L 0x8000 /* Generation Level status */ |
77 | |
78 | #define AC97_ALC650_SPDIF_INPUT_STATUS2 0x62 |
79 | /* S/PDIF input status 2 bit defines */ |
80 | #define AC97_ALC650_SOUCE_MASK 0x000f /* Source number */ |
81 | #define AC97_ALC650_CHANNEL_MASK 0x00f0 /* Channel number */ |
82 | #define AC97_ALC650_CHANNEL_SHIFT 4 |
83 | #define AC97_ALC650_SPSR_MASK 0x0f00 /* S/PDIF Sample Rate bits */ |
84 | #define AC97_ALC650_SPSR_SHIFT 8 |
85 | #define AC97_ALC650_SPSR_44K 0x0000 /* Use 44.1kHz Sample rate */ |
86 | #define AC97_ALC650_SPSR_48K 0x0200 /* Use 48kHz Sample rate */ |
87 | #define AC97_ALC650_SPSR_32K 0x0300 /* Use 32kHz Sample rate */ |
88 | #define AC97_ALC650_CLOCK_ACCURACY 0x3000 /* Clock accuracy */ |
89 | #define AC97_ALC650_CLOCK_SHIFT 12 |
90 | #define AC97_ALC650_CLOCK_LOCK 0x4000 /* Clock locked status */ |
91 | #define AC97_ALC650_V 0x8000 /* Validity status */ |
92 | |
93 | #define AC97_ALC650_SURR_DAC_VOL 0x64 |
94 | #define AC97_ALC650_LFE_DAC_VOL 0x66 |
95 | #define AC97_ALC650_UNKNOWN1 0x68 |
96 | #define AC97_ALC650_MULTICH 0x6a |
97 | #define AC97_ALC650_UNKNOWN2 0x6c |
98 | #define AC97_ALC650_REVISION 0x6e |
99 | #define AC97_ALC650_UNKNOWN3 0x70 |
100 | #define AC97_ALC650_UNKNOWN4 0x72 |
101 | #define AC97_ALC650_MISC 0x74 |
102 | #define AC97_ALC650_GPIO_SETUP 0x76 |
103 | #define AC97_ALC650_GPIO_STATUS 0x78 |
104 | #define AC97_ALC650_CLOCK 0x7a |
105 | |
106 | /* specific - Yamaha YMF7x3 */ |
107 | #define AC97_YMF7X3_DIT_CTRL 0x66 /* DIT Control (YMF743) / 2 (YMF753) */ |
108 | #define AC97_YMF7X3_3D_MODE_SEL 0x68 /* 3D Mode Select */ |
109 | |
110 | /* specific - C-Media */ |
111 | #define AC97_CM9738_VENDOR_CTRL 0x5a |
112 | #define AC97_CM9739_MULTI_CHAN 0x64 |
113 | #define AC97_CM9739_SPDIF_IN_STATUS 0x68 /* 32bit */ |
114 | #define AC97_CM9739_SPDIF_CTRL 0x6c |
115 | |
116 | /* specific - wolfson */ |
117 | #define AC97_WM97XX_FMIXER_VOL 0x72 |
118 | #define AC97_WM9704_RMIXER_VOL 0x74 |
119 | #define AC97_WM9704_TEST 0x5a |
120 | #define AC97_WM9704_RPCM_VOL 0x70 |
121 | #define AC97_WM9711_OUT3VOL 0x16 |
122 | |
123 | |
124 | /* ac97->scaps */ |
125 | #define AC97_SCAP_AUDIO (1<<0) /* audio codec 97 */ |
126 | #define AC97_SCAP_MODEM (1<<1) /* modem codec 97 */ |
127 | #define AC97_SCAP_SURROUND_DAC (1<<2) /* surround L&R DACs are present */ |
128 | #define AC97_SCAP_CENTER_LFE_DAC (1<<3) /* center and LFE DACs are present */ |
129 | #define AC97_SCAP_SKIP_AUDIO (1<<4) /* skip audio part of codec */ |
130 | #define AC97_SCAP_SKIP_MODEM (1<<5) /* skip modem part of codec */ |
131 | #define AC97_SCAP_INDEP_SDIN (1<<6) /* independent SDIN */ |
132 | #define AC97_SCAP_INV_EAPD (1<<7) /* inverted EAPD */ |
133 | #define AC97_SCAP_DETECT_BY_VENDOR (1<<8) /* use vendor registers for read tests */ |
134 | #define AC97_SCAP_NO_SPDIF (1<<9) /* don't build SPDIF controls */ |
135 | #define AC97_SCAP_EAPD_LED (1<<10) /* EAPD as mute LED */ |
136 | #define AC97_SCAP_POWER_SAVE (1<<11) /* capable for aggressive power-saving */ |
137 | |
138 | /* ac97->flags */ |
139 | #define AC97_HAS_PC_BEEP (1<<0) /* force PC Speaker usage */ |
140 | #define AC97_AD_MULTI (1<<1) /* Analog Devices - multi codecs */ |
141 | #define AC97_CS_SPDIF (1<<2) /* Cirrus Logic uses funky SPDIF */ |
142 | #define AC97_CX_SPDIF (1<<3) /* Conexant's spdif interface */ |
143 | #define AC97_STEREO_MUTES (1<<4) /* has stereo mute bits */ |
144 | #define AC97_DOUBLE_RATE (1<<5) /* supports double rate playback */ |
145 | #define AC97_HAS_NO_MASTER_VOL (1<<6) /* no Master volume */ |
146 | #define AC97_HAS_NO_PCM_VOL (1<<7) /* no PCM volume */ |
147 | #define AC97_DEFAULT_POWER_OFF (1<<8) /* no RESET write */ |
148 | #define AC97_MODEM_PATCH (1<<9) /* modem patch */ |
149 | #define AC97_HAS_NO_REC_GAIN (1<<10) /* no Record gain */ |
150 | #define AC97_HAS_NO_PHONE (1<<11) /* no PHONE volume */ |
151 | #define AC97_HAS_NO_PC_BEEP (1<<12) /* no PC Beep volume */ |
152 | #define AC97_HAS_NO_VIDEO (1<<13) /* no Video volume */ |
153 | #define AC97_HAS_NO_CD (1<<14) /* no CD volume */ |
154 | #define AC97_HAS_NO_MIC (1<<15) /* no MIC volume */ |
155 | #define AC97_HAS_NO_TONE (1<<16) /* no Tone volume */ |
156 | #define AC97_HAS_NO_STD_PCM (1<<17) /* no standard AC97 PCM volume and mute */ |
157 | #define AC97_HAS_NO_AUX (1<<18) /* no standard AC97 AUX volume and mute */ |
158 | #define AC97_HAS_8CH (1<<19) /* supports 8-channel output */ |
159 | |
160 | /* rates indexes */ |
161 | #define AC97_RATES_FRONT_DAC 0 |
162 | #define AC97_RATES_SURR_DAC 1 |
163 | #define AC97_RATES_LFE_DAC 2 |
164 | #define AC97_RATES_ADC 3 |
165 | #define AC97_RATES_MIC_ADC 4 |
166 | #define AC97_RATES_SPDIF 5 |
167 | |
168 | #define AC97_NUM_GPIOS 16 |
169 | /* |
170 | * |
171 | */ |
172 | |
173 | struct snd_ac97; |
174 | struct snd_ac97_gpio_priv; |
175 | struct snd_pcm_chmap; |
176 | |
177 | struct snd_ac97_build_ops { |
178 | int (*build_3d) (struct snd_ac97 *ac97); |
179 | int (*build_specific) (struct snd_ac97 *ac97); |
180 | int (*build_spdif) (struct snd_ac97 *ac97); |
181 | int (*build_post_spdif) (struct snd_ac97 *ac97); |
182 | #ifdef CONFIG_PM |
183 | void (*suspend) (struct snd_ac97 *ac97); |
184 | void (*resume) (struct snd_ac97 *ac97); |
185 | #endif |
186 | void (*update_jacks) (struct snd_ac97 *ac97); /* for jack-sharing */ |
187 | }; |
188 | |
189 | struct snd_ac97_bus_ops { |
190 | void (*reset) (struct snd_ac97 *ac97); |
191 | void (*warm_reset)(struct snd_ac97 *ac97); |
192 | void (*write) (struct snd_ac97 *ac97, unsigned short reg, unsigned short val); |
193 | unsigned short (*read) (struct snd_ac97 *ac97, unsigned short reg); |
194 | void (*wait) (struct snd_ac97 *ac97); |
195 | void (*init) (struct snd_ac97 *ac97); |
196 | }; |
197 | |
198 | struct snd_ac97_bus { |
199 | /* -- lowlevel (hardware) driver specific -- */ |
200 | const struct snd_ac97_bus_ops *ops; |
201 | void *private_data; |
202 | void (*private_free) (struct snd_ac97_bus *bus); |
203 | /* --- */ |
204 | struct snd_card *card; |
205 | unsigned short num; /* bus number */ |
206 | unsigned short no_vra: 1, /* bridge doesn't support VRA */ |
207 | dra: 1, /* bridge supports double rate */ |
208 | isdin: 1;/* independent SDIN */ |
209 | unsigned int clock; /* AC'97 base clock (usually 48000Hz) */ |
210 | spinlock_t bus_lock; /* used mainly for slot allocation */ |
211 | unsigned short used_slots[2][4]; /* actually used PCM slots */ |
212 | unsigned short pcms_count; /* count of PCMs */ |
213 | struct ac97_pcm *pcms; |
214 | struct snd_ac97 *codec[4]; |
215 | struct snd_info_entry *proc; |
216 | }; |
217 | |
218 | /* static resolution table */ |
219 | struct snd_ac97_res_table { |
220 | unsigned short reg; /* register */ |
221 | unsigned short bits; /* resolution bitmask */ |
222 | }; |
223 | |
224 | struct snd_ac97_template { |
225 | void *private_data; |
226 | void (*private_free) (struct snd_ac97 *ac97); |
227 | struct pci_dev *pci; /* assigned PCI device - used for quirks */ |
228 | unsigned short num; /* number of codec: 0 = primary, 1 = secondary */ |
229 | unsigned short addr; /* physical address of codec [0-3] */ |
230 | unsigned int scaps; /* driver capabilities */ |
231 | const struct snd_ac97_res_table *res_table; /* static resolution */ |
232 | }; |
233 | |
234 | struct snd_ac97 { |
235 | /* -- lowlevel (hardware) driver specific -- */ |
236 | const struct snd_ac97_build_ops *build_ops; |
237 | void *private_data; |
238 | void (*private_free) (struct snd_ac97 *ac97); |
239 | /* --- */ |
240 | struct snd_ac97_bus *bus; |
241 | struct pci_dev *pci; /* assigned PCI device - used for quirks */ |
242 | struct snd_info_entry *proc; |
243 | struct snd_info_entry *proc_regs; |
244 | unsigned short subsystem_vendor; |
245 | unsigned short subsystem_device; |
246 | struct mutex reg_mutex; |
247 | struct mutex page_mutex; /* mutex for AD18xx multi-codecs and paging (2.3) */ |
248 | unsigned short num; /* number of codec: 0 = primary, 1 = secondary */ |
249 | unsigned short addr; /* physical address of codec [0-3] */ |
250 | unsigned int id; /* identification of codec */ |
251 | unsigned short caps; /* capabilities (register 0) */ |
252 | unsigned short ext_id; /* extended feature identification (register 28) */ |
253 | unsigned short ext_mid; /* extended modem ID (register 3C) */ |
254 | const struct snd_ac97_res_table *res_table; /* static resolution */ |
255 | unsigned int scaps; /* driver capabilities */ |
256 | unsigned int flags; /* specific code */ |
257 | unsigned int rates[6]; /* see AC97_RATES_* defines */ |
258 | unsigned int spdif_status; |
259 | unsigned short regs[0x80]; /* register cache */ |
260 | DECLARE_BITMAP(reg_accessed, 0x80); /* bit flags */ |
261 | union { /* vendor specific code */ |
262 | struct { |
263 | unsigned short unchained[3]; // 0 = C34, 1 = C79, 2 = C69 |
264 | unsigned short chained[3]; // 0 = C34, 1 = C79, 2 = C69 |
265 | unsigned short id[3]; // codec IDs (lower 16-bit word) |
266 | unsigned short pcmreg[3]; // PCM registers |
267 | unsigned short codec_cfg[3]; // CODEC_CFG bits |
268 | unsigned char swap_mic_linein; // AD1986/AD1986A only |
269 | unsigned char lo_as_master; /* LO as master */ |
270 | } ad18xx; |
271 | unsigned int dev_flags; /* device specific */ |
272 | } spec; |
273 | /* jack-sharing info */ |
274 | unsigned char indep_surround; |
275 | unsigned char channel_mode; |
276 | |
277 | #ifdef CONFIG_SND_AC97_POWER_SAVE |
278 | unsigned int power_up; /* power states */ |
279 | struct delayed_work power_work; |
280 | #endif |
281 | struct device dev; |
282 | struct snd_ac97_gpio_priv *gpio_priv; |
283 | |
284 | struct snd_pcm_chmap *chmaps[2]; /* channel-maps (optional) */ |
285 | }; |
286 | |
287 | #define to_ac97_t(d) container_of(d, struct snd_ac97, dev) |
288 | |
289 | /* conditions */ |
290 | static inline int ac97_is_audio(struct snd_ac97 * ac97) |
291 | { |
292 | return (ac97->scaps & AC97_SCAP_AUDIO); |
293 | } |
294 | static inline int ac97_is_modem(struct snd_ac97 * ac97) |
295 | { |
296 | return (ac97->scaps & AC97_SCAP_MODEM); |
297 | } |
298 | static inline int ac97_is_rev22(struct snd_ac97 * ac97) |
299 | { |
300 | return (ac97->ext_id & AC97_EI_REV_MASK) >= AC97_EI_REV_22; |
301 | } |
302 | static inline int ac97_can_amap(struct snd_ac97 * ac97) |
303 | { |
304 | return (ac97->ext_id & AC97_EI_AMAP) != 0; |
305 | } |
306 | static inline int ac97_can_spdif(struct snd_ac97 * ac97) |
307 | { |
308 | return (ac97->ext_id & AC97_EI_SPDIF) != 0; |
309 | } |
310 | |
311 | /* functions */ |
312 | /* create new AC97 bus */ |
313 | int snd_ac97_bus(struct snd_card *card, int num, |
314 | const struct snd_ac97_bus_ops *ops, |
315 | void *private_data, struct snd_ac97_bus **rbus); |
316 | /* create mixer controls */ |
317 | int snd_ac97_mixer(struct snd_ac97_bus *bus, struct snd_ac97_template *template, |
318 | struct snd_ac97 **rac97); |
319 | const char *snd_ac97_get_short_name(struct snd_ac97 *ac97); |
320 | |
321 | void snd_ac97_write(struct snd_ac97 *ac97, unsigned short reg, unsigned short value); |
322 | unsigned short snd_ac97_read(struct snd_ac97 *ac97, unsigned short reg); |
323 | void snd_ac97_write_cache(struct snd_ac97 *ac97, unsigned short reg, unsigned short value); |
324 | int snd_ac97_update(struct snd_ac97 *ac97, unsigned short reg, unsigned short value); |
325 | int snd_ac97_update_bits(struct snd_ac97 *ac97, unsigned short reg, unsigned short mask, unsigned short value); |
326 | #ifdef CONFIG_SND_AC97_POWER_SAVE |
327 | int snd_ac97_update_power(struct snd_ac97 *ac97, int reg, int powerup); |
328 | #else |
329 | static inline int snd_ac97_update_power(struct snd_ac97 *ac97, int reg, |
330 | int powerup) |
331 | { |
332 | return 0; |
333 | } |
334 | #endif |
335 | #ifdef CONFIG_PM |
336 | void snd_ac97_suspend(struct snd_ac97 *ac97); |
337 | void snd_ac97_resume(struct snd_ac97 *ac97); |
338 | #else |
339 | static inline void snd_ac97_suspend(struct snd_ac97 *ac97) {} |
340 | static inline void snd_ac97_resume(struct snd_ac97 *ac97) {} |
341 | #endif |
342 | int snd_ac97_reset(struct snd_ac97 *ac97, bool try_warm, unsigned int id, |
343 | unsigned int id_mask); |
344 | |
345 | /* quirk types */ |
346 | enum { |
347 | AC97_TUNE_DEFAULT = -1, /* use default from quirk list (not valid in list) */ |
348 | AC97_TUNE_NONE = 0, /* nothing extra to do */ |
349 | AC97_TUNE_HP_ONLY, /* headphone (true line-out) control as master only */ |
350 | AC97_TUNE_SWAP_HP, /* swap headphone and master controls */ |
351 | AC97_TUNE_SWAP_SURROUND, /* swap master and surround controls */ |
352 | AC97_TUNE_AD_SHARING, /* for AD1985, turn on OMS bit and use headphone */ |
353 | AC97_TUNE_ALC_JACK, /* for Realtek, enable JACK detection */ |
354 | AC97_TUNE_INV_EAPD, /* inverted EAPD implementation */ |
355 | AC97_TUNE_MUTE_LED, /* EAPD bit works as mute LED */ |
356 | AC97_TUNE_HP_MUTE_LED, /* EAPD bit works as mute LED, use headphone control as master */ |
357 | }; |
358 | |
359 | struct ac97_quirk { |
360 | unsigned short subvendor; /* PCI subsystem vendor id */ |
361 | unsigned short subdevice; /* PCI subsystem device id */ |
362 | unsigned short mask; /* device id bit mask, 0 = accept all */ |
363 | unsigned int codec_id; /* codec id (if any), 0 = accept all */ |
364 | const char *name; /* name shown as info */ |
365 | int type; /* quirk type above */ |
366 | }; |
367 | |
368 | int snd_ac97_tune_hardware(struct snd_ac97 *ac97, |
369 | const struct ac97_quirk *quirk, |
370 | const char *override); |
371 | int snd_ac97_set_rate(struct snd_ac97 *ac97, int reg, unsigned int rate); |
372 | |
373 | /* |
374 | * PCM allocation |
375 | */ |
376 | |
377 | enum ac97_pcm_cfg { |
378 | AC97_PCM_CFG_FRONT = 2, |
379 | AC97_PCM_CFG_REAR = 10, /* alias surround */ |
380 | AC97_PCM_CFG_LFE = 11, /* center + lfe */ |
381 | AC97_PCM_CFG_40 = 4, /* front + rear */ |
382 | AC97_PCM_CFG_51 = 6, /* front + rear + center/lfe */ |
383 | AC97_PCM_CFG_SPDIF = 20 |
384 | }; |
385 | |
386 | struct ac97_pcm { |
387 | struct snd_ac97_bus *bus; |
388 | unsigned int stream: 1, /* stream type: 1 = capture */ |
389 | exclusive: 1, /* exclusive mode, don't override with other pcms */ |
390 | copy_flag: 1, /* lowlevel driver must fill all entries */ |
391 | spdif: 1; /* spdif pcm */ |
392 | unsigned short aslots; /* active slots */ |
393 | unsigned short cur_dbl; /* current double-rate state */ |
394 | unsigned int rates; /* available rates */ |
395 | struct { |
396 | unsigned short slots; /* driver input: requested AC97 slot numbers */ |
397 | unsigned short rslots[4]; /* allocated slots per codecs */ |
398 | unsigned char rate_table[4]; |
399 | struct snd_ac97 *codec[4]; /* allocated codecs */ |
400 | } r[2]; /* 0 = standard rates, 1 = double rates */ |
401 | unsigned long private_value; /* used by the hardware driver */ |
402 | }; |
403 | |
404 | int snd_ac97_pcm_assign(struct snd_ac97_bus *ac97, |
405 | unsigned short pcms_count, |
406 | const struct ac97_pcm *pcms); |
407 | int snd_ac97_pcm_open(struct ac97_pcm *pcm, unsigned int rate, |
408 | enum ac97_pcm_cfg cfg, unsigned short slots); |
409 | int snd_ac97_pcm_close(struct ac97_pcm *pcm); |
410 | int snd_ac97_pcm_double_rate_rules(struct snd_pcm_runtime *runtime); |
411 | |
412 | /* ad hoc AC97 device driver access */ |
413 | extern struct bus_type ac97_bus_type; |
414 | |
415 | /* AC97 platform_data adding function */ |
416 | static inline void snd_ac97_dev_add_pdata(struct snd_ac97 *ac97, void *data) |
417 | { |
418 | ac97->dev.platform_data = data; |
419 | } |
420 | |
421 | #endif /* __SOUND_AC97_CODEC_H */ |
422 | |