1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * HD-audio core stuff
4 */
5
6 #ifndef __SOUND_HDAUDIO_H
7 #define __SOUND_HDAUDIO_H
8
9 #include <linux/device.h>
10 #include <linux/interrupt.h>
11 #include <linux/io.h>
12 #include <linux/pm_runtime.h>
13 #include <linux/timecounter.h>
14 #include <sound/core.h>
15 #include <sound/pcm.h>
16 #include <sound/memalloc.h>
17 #include <sound/hda_verbs.h>
18 #include <drm/i915_component.h>
19
20 /* codec node id */
21 typedef u16 hda_nid_t;
22
23 struct hdac_bus;
24 struct hdac_stream;
25 struct hdac_device;
26 struct hdac_driver;
27 struct hdac_widget_tree;
28 struct hda_device_id;
29
30 /*
31 * exported bus type
32 */
33 extern struct bus_type snd_hda_bus_type;
34
35 /*
36 * generic arrays
37 */
38 struct snd_array {
39 unsigned int used;
40 unsigned int alloced;
41 unsigned int elem_size;
42 unsigned int alloc_align;
43 void *list;
44 };
45
46 /*
47 * HD-audio codec base device
48 */
49 struct hdac_device {
50 struct device dev;
51 int type;
52 struct hdac_bus *bus;
53 unsigned int addr; /* codec address */
54 struct list_head list; /* list point for bus codec_list */
55
56 hda_nid_t afg; /* AFG node id */
57 hda_nid_t mfg; /* MFG node id */
58
59 /* ids */
60 unsigned int vendor_id;
61 unsigned int subsystem_id;
62 unsigned int revision_id;
63 unsigned int afg_function_id;
64 unsigned int mfg_function_id;
65 unsigned int afg_unsol:1;
66 unsigned int mfg_unsol:1;
67
68 unsigned int power_caps; /* FG power caps */
69
70 const char *vendor_name; /* codec vendor name */
71 const char *chip_name; /* codec chip name */
72
73 /* verb exec op override */
74 int (*exec_verb)(struct hdac_device *dev, unsigned int cmd,
75 unsigned int flags, unsigned int *res);
76
77 /* widgets */
78 unsigned int num_nodes;
79 hda_nid_t start_nid, end_nid;
80
81 /* misc flags */
82 atomic_t in_pm; /* suspend/resume being performed */
83
84 /* sysfs */
85 struct mutex widget_lock;
86 struct hdac_widget_tree *widgets;
87
88 /* regmap */
89 struct regmap *regmap;
90 struct mutex regmap_lock;
91 struct snd_array vendor_verbs;
92 bool lazy_cache:1; /* don't wake up for writes */
93 bool caps_overwriting:1; /* caps overwrite being in process */
94 bool cache_coef:1; /* cache COEF read/write too */
95 };
96
97 /* device/driver type used for matching */
98 enum {
99 HDA_DEV_CORE,
100 HDA_DEV_LEGACY,
101 HDA_DEV_ASOC,
102 };
103
104 enum {
105 SND_SKL_PCI_BIND_AUTO, /* automatic selection based on pci class */
106 SND_SKL_PCI_BIND_LEGACY,/* bind only with legacy driver */
107 SND_SKL_PCI_BIND_ASOC /* bind only with ASoC driver */
108 };
109
110 /* direction */
111 enum {
112 HDA_INPUT, HDA_OUTPUT
113 };
114
115 #define dev_to_hdac_dev(_dev) container_of(_dev, struct hdac_device, dev)
116
117 int snd_hdac_device_init(struct hdac_device *dev, struct hdac_bus *bus,
118 const char *name, unsigned int addr);
119 void snd_hdac_device_exit(struct hdac_device *dev);
120 int snd_hdac_device_register(struct hdac_device *codec);
121 void snd_hdac_device_unregister(struct hdac_device *codec);
122 int snd_hdac_device_set_chip_name(struct hdac_device *codec, const char *name);
123 int snd_hdac_codec_modalias(struct hdac_device *hdac, char *buf, size_t size);
124
125 int snd_hdac_refresh_widgets(struct hdac_device *codec);
126
127 int snd_hdac_read(struct hdac_device *codec, hda_nid_t nid,
128 unsigned int verb, unsigned int parm, unsigned int *res);
129 int _snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm,
130 unsigned int *res);
131 int snd_hdac_read_parm_uncached(struct hdac_device *codec, hda_nid_t nid,
132 int parm);
133 int snd_hdac_override_parm(struct hdac_device *codec, hda_nid_t nid,
134 unsigned int parm, unsigned int val);
135 int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid,
136 hda_nid_t *conn_list, int max_conns);
137 int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid,
138 hda_nid_t *start_id);
139 unsigned int snd_hdac_calc_stream_format(unsigned int rate,
140 unsigned int channels,
141 snd_pcm_format_t format,
142 unsigned int maxbps,
143 unsigned short spdif_ctls);
144 int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid,
145 u32 *ratesp, u64 *formatsp, unsigned int *bpsp);
146 bool snd_hdac_is_supported_format(struct hdac_device *codec, hda_nid_t nid,
147 unsigned int format);
148
149 int snd_hdac_codec_read(struct hdac_device *hdac, hda_nid_t nid,
150 int flags, unsigned int verb, unsigned int parm);
151 int snd_hdac_codec_write(struct hdac_device *hdac, hda_nid_t nid,
152 int flags, unsigned int verb, unsigned int parm);
153 bool snd_hdac_check_power_state(struct hdac_device *hdac,
154 hda_nid_t nid, unsigned int target_state);
155 unsigned int snd_hdac_sync_power_state(struct hdac_device *hdac,
156 hda_nid_t nid, unsigned int target_state);
157 /**
158 * snd_hdac_read_parm - read a codec parameter
159 * @codec: the codec object
160 * @nid: NID to read a parameter
161 * @parm: parameter to read
162 *
163 * Returns -1 for error. If you need to distinguish the error more
164 * strictly, use _snd_hdac_read_parm() directly.
165 */
snd_hdac_read_parm(struct hdac_device * codec,hda_nid_t nid,int parm)166 static inline int snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid,
167 int parm)
168 {
169 unsigned int val;
170
171 return _snd_hdac_read_parm(codec, nid, parm, &val) < 0 ? -1 : val;
172 }
173
174 #ifdef CONFIG_PM
175 int snd_hdac_power_up(struct hdac_device *codec);
176 int snd_hdac_power_down(struct hdac_device *codec);
177 int snd_hdac_power_up_pm(struct hdac_device *codec);
178 int snd_hdac_power_down_pm(struct hdac_device *codec);
179 int snd_hdac_keep_power_up(struct hdac_device *codec);
180
181 /* call this at entering into suspend/resume callbacks in codec driver */
snd_hdac_enter_pm(struct hdac_device * codec)182 static inline void snd_hdac_enter_pm(struct hdac_device *codec)
183 {
184 atomic_inc(&codec->in_pm);
185 }
186
187 /* call this at leaving from suspend/resume callbacks in codec driver */
snd_hdac_leave_pm(struct hdac_device * codec)188 static inline void snd_hdac_leave_pm(struct hdac_device *codec)
189 {
190 atomic_dec(&codec->in_pm);
191 }
192
snd_hdac_is_in_pm(struct hdac_device * codec)193 static inline bool snd_hdac_is_in_pm(struct hdac_device *codec)
194 {
195 return atomic_read(&codec->in_pm);
196 }
197
snd_hdac_is_power_on(struct hdac_device * codec)198 static inline bool snd_hdac_is_power_on(struct hdac_device *codec)
199 {
200 return !pm_runtime_suspended(&codec->dev);
201 }
202 #else
snd_hdac_power_up(struct hdac_device * codec)203 static inline int snd_hdac_power_up(struct hdac_device *codec) { return 0; }
snd_hdac_power_down(struct hdac_device * codec)204 static inline int snd_hdac_power_down(struct hdac_device *codec) { return 0; }
snd_hdac_power_up_pm(struct hdac_device * codec)205 static inline int snd_hdac_power_up_pm(struct hdac_device *codec) { return 0; }
snd_hdac_power_down_pm(struct hdac_device * codec)206 static inline int snd_hdac_power_down_pm(struct hdac_device *codec) { return 0; }
snd_hdac_keep_power_up(struct hdac_device * codec)207 static inline int snd_hdac_keep_power_up(struct hdac_device *codec) { return 0; }
snd_hdac_enter_pm(struct hdac_device * codec)208 static inline void snd_hdac_enter_pm(struct hdac_device *codec) {}
snd_hdac_leave_pm(struct hdac_device * codec)209 static inline void snd_hdac_leave_pm(struct hdac_device *codec) {}
snd_hdac_is_in_pm(struct hdac_device * codec)210 static inline bool snd_hdac_is_in_pm(struct hdac_device *codec) { return false; }
snd_hdac_is_power_on(struct hdac_device * codec)211 static inline bool snd_hdac_is_power_on(struct hdac_device *codec) { return true; }
212 #endif
213
214 /*
215 * HD-audio codec base driver
216 */
217 struct hdac_driver {
218 struct device_driver driver;
219 int type;
220 const struct hda_device_id *id_table;
221 int (*match)(struct hdac_device *dev, struct hdac_driver *drv);
222 void (*unsol_event)(struct hdac_device *dev, unsigned int event);
223
224 /* fields used by ext bus APIs */
225 int (*probe)(struct hdac_device *dev);
226 int (*remove)(struct hdac_device *dev);
227 void (*shutdown)(struct hdac_device *dev);
228 };
229
230 #define drv_to_hdac_driver(_drv) container_of(_drv, struct hdac_driver, driver)
231
232 const struct hda_device_id *
233 hdac_get_device_id(struct hdac_device *hdev, struct hdac_driver *drv);
234
235 /*
236 * Bus verb operators
237 */
238 struct hdac_bus_ops {
239 /* send a single command */
240 int (*command)(struct hdac_bus *bus, unsigned int cmd);
241 /* get a response from the last command */
242 int (*get_response)(struct hdac_bus *bus, unsigned int addr,
243 unsigned int *res);
244 /* notify of codec link power-up/down */
245 void (*link_power)(struct hdac_device *hdev, bool enable);
246 };
247
248 /*
249 * ops used for ASoC HDA codec drivers
250 */
251 struct hdac_ext_bus_ops {
252 int (*hdev_attach)(struct hdac_device *hdev);
253 int (*hdev_detach)(struct hdac_device *hdev);
254 };
255
256 #define HDA_UNSOL_QUEUE_SIZE 64
257 #define HDA_MAX_CODECS 8 /* limit by controller side */
258
259 /*
260 * CORB/RIRB
261 *
262 * Each CORB entry is 4byte, RIRB is 8byte
263 */
264 struct hdac_rb {
265 __le32 *buf; /* virtual address of CORB/RIRB buffer */
266 dma_addr_t addr; /* physical address of CORB/RIRB buffer */
267 unsigned short rp, wp; /* RIRB read/write pointers */
268 int cmds[HDA_MAX_CODECS]; /* number of pending requests */
269 u32 res[HDA_MAX_CODECS]; /* last read value */
270 };
271
272 /*
273 * HD-audio bus base driver
274 *
275 * @ppcap: pp capabilities pointer
276 * @spbcap: SPIB capabilities pointer
277 * @mlcap: MultiLink capabilities pointer
278 * @gtscap: gts capabilities pointer
279 * @drsmcap: dma resume capabilities pointer
280 * @num_streams: streams supported
281 * @idx: HDA link index
282 * @hlink_list: link list of HDA links
283 * @lock: lock for link and display power mgmt
284 * @cmd_dma_state: state of cmd DMAs: CORB and RIRB
285 */
286 struct hdac_bus {
287 struct device *dev;
288 const struct hdac_bus_ops *ops;
289 const struct hdac_ext_bus_ops *ext_ops;
290
291 /* h/w resources */
292 unsigned long addr;
293 void __iomem *remap_addr;
294 int irq;
295
296 void __iomem *ppcap;
297 void __iomem *spbcap;
298 void __iomem *mlcap;
299 void __iomem *gtscap;
300 void __iomem *drsmcap;
301
302 /* codec linked list */
303 struct list_head codec_list;
304 unsigned int num_codecs;
305
306 /* link caddr -> codec */
307 struct hdac_device *caddr_tbl[HDA_MAX_CODEC_ADDRESS + 1];
308
309 /* unsolicited event queue */
310 u32 unsol_queue[HDA_UNSOL_QUEUE_SIZE * 2]; /* ring buffer */
311 unsigned int unsol_rp, unsol_wp;
312 struct work_struct unsol_work;
313
314 /* bit flags of detected codecs */
315 unsigned long codec_mask;
316
317 /* bit flags of powered codecs */
318 unsigned long codec_powered;
319
320 /* CORB/RIRB */
321 struct hdac_rb corb;
322 struct hdac_rb rirb;
323 unsigned int last_cmd[HDA_MAX_CODECS]; /* last sent command */
324 wait_queue_head_t rirb_wq;
325
326 /* CORB/RIRB and position buffers */
327 struct snd_dma_buffer rb;
328 struct snd_dma_buffer posbuf;
329 int dma_type; /* SNDRV_DMA_TYPE_XXX for CORB/RIRB */
330
331 /* hdac_stream linked list */
332 struct list_head stream_list;
333
334 /* operation state */
335 bool chip_init:1; /* h/w initialized */
336
337 /* behavior flags */
338 bool aligned_mmio:1; /* aligned MMIO access */
339 bool sync_write:1; /* sync after verb write */
340 bool use_posbuf:1; /* use position buffer */
341 bool snoop:1; /* enable snooping */
342 bool align_bdle_4k:1; /* BDLE align 4K boundary */
343 bool reverse_assign:1; /* assign devices in reverse order */
344 bool corbrp_self_clear:1; /* CORBRP clears itself after reset */
345 bool polling_mode:1;
346 bool needs_damn_long_delay:1;
347
348 int poll_count;
349
350 int bdl_pos_adj; /* BDL position adjustment */
351
352 /* delay time in us for dma stop */
353 unsigned int dma_stop_delay;
354
355 /* locks */
356 spinlock_t reg_lock;
357 struct mutex cmd_mutex;
358 struct mutex lock;
359
360 /* DRM component interface */
361 struct drm_audio_component *audio_component;
362 long display_power_status;
363 unsigned long display_power_active;
364
365 /* parameters required for enhanced capabilities */
366 int num_streams;
367 int idx;
368
369 /* link management */
370 struct list_head hlink_list;
371 bool cmd_dma_state;
372
373 /* factor used to derive STRIPE control value */
374 unsigned int sdo_limit;
375 };
376
377 int snd_hdac_bus_init(struct hdac_bus *bus, struct device *dev,
378 const struct hdac_bus_ops *ops);
379 void snd_hdac_bus_exit(struct hdac_bus *bus);
380 int snd_hdac_bus_exec_verb_unlocked(struct hdac_bus *bus, unsigned int addr,
381 unsigned int cmd, unsigned int *res);
382
383 void snd_hdac_codec_link_up(struct hdac_device *codec);
384 void snd_hdac_codec_link_down(struct hdac_device *codec);
385
386 int snd_hdac_bus_send_cmd(struct hdac_bus *bus, unsigned int val);
387 int snd_hdac_bus_get_response(struct hdac_bus *bus, unsigned int addr,
388 unsigned int *res);
389 int snd_hdac_bus_parse_capabilities(struct hdac_bus *bus);
390
391 bool snd_hdac_bus_init_chip(struct hdac_bus *bus, bool full_reset);
392 void snd_hdac_bus_stop_chip(struct hdac_bus *bus);
393 void snd_hdac_bus_init_cmd_io(struct hdac_bus *bus);
394 void snd_hdac_bus_stop_cmd_io(struct hdac_bus *bus);
395 void snd_hdac_bus_enter_link_reset(struct hdac_bus *bus);
396 void snd_hdac_bus_exit_link_reset(struct hdac_bus *bus);
397 int snd_hdac_bus_reset_link(struct hdac_bus *bus, bool full_reset);
398 void snd_hdac_bus_link_power(struct hdac_device *hdev, bool enable);
399
400 void snd_hdac_bus_update_rirb(struct hdac_bus *bus);
401 int snd_hdac_bus_handle_stream_irq(struct hdac_bus *bus, unsigned int status,
402 void (*ack)(struct hdac_bus *,
403 struct hdac_stream *));
404
405 int snd_hdac_bus_alloc_stream_pages(struct hdac_bus *bus);
406 void snd_hdac_bus_free_stream_pages(struct hdac_bus *bus);
407
408 #ifdef CONFIG_SND_HDA_ALIGNED_MMIO
409 unsigned int snd_hdac_aligned_read(void __iomem *addr, unsigned int mask);
410 void snd_hdac_aligned_write(unsigned int val, void __iomem *addr,
411 unsigned int mask);
412 #define snd_hdac_aligned_mmio(bus) (bus)->aligned_mmio
413 #else
414 #define snd_hdac_aligned_mmio(bus) false
415 #define snd_hdac_aligned_read(addr, mask) 0
416 #define snd_hdac_aligned_write(val, addr, mask) do {} while (0)
417 #endif
418
snd_hdac_reg_writeb(struct hdac_bus * bus,void __iomem * addr,u8 val)419 static inline void snd_hdac_reg_writeb(struct hdac_bus *bus, void __iomem *addr,
420 u8 val)
421 {
422 if (snd_hdac_aligned_mmio(bus))
423 snd_hdac_aligned_write(val, addr, 0xff);
424 else
425 writeb(val, addr);
426 }
427
snd_hdac_reg_writew(struct hdac_bus * bus,void __iomem * addr,u16 val)428 static inline void snd_hdac_reg_writew(struct hdac_bus *bus, void __iomem *addr,
429 u16 val)
430 {
431 if (snd_hdac_aligned_mmio(bus))
432 snd_hdac_aligned_write(val, addr, 0xffff);
433 else
434 writew(val, addr);
435 }
436
snd_hdac_reg_readb(struct hdac_bus * bus,void __iomem * addr)437 static inline u8 snd_hdac_reg_readb(struct hdac_bus *bus, void __iomem *addr)
438 {
439 return snd_hdac_aligned_mmio(bus) ?
440 snd_hdac_aligned_read(addr, 0xff) : readb(addr);
441 }
442
snd_hdac_reg_readw(struct hdac_bus * bus,void __iomem * addr)443 static inline u16 snd_hdac_reg_readw(struct hdac_bus *bus, void __iomem *addr)
444 {
445 return snd_hdac_aligned_mmio(bus) ?
446 snd_hdac_aligned_read(addr, 0xffff) : readw(addr);
447 }
448
449 #define snd_hdac_reg_writel(bus, addr, val) writel(val, addr)
450 #define snd_hdac_reg_readl(bus, addr) readl(addr)
451
452 /*
453 * macros for easy use
454 */
455 #define _snd_hdac_chip_writeb(chip, reg, value) \
456 snd_hdac_reg_writeb(chip, (chip)->remap_addr + (reg), value)
457 #define _snd_hdac_chip_readb(chip, reg) \
458 snd_hdac_reg_readb(chip, (chip)->remap_addr + (reg))
459 #define _snd_hdac_chip_writew(chip, reg, value) \
460 snd_hdac_reg_writew(chip, (chip)->remap_addr + (reg), value)
461 #define _snd_hdac_chip_readw(chip, reg) \
462 snd_hdac_reg_readw(chip, (chip)->remap_addr + (reg))
463 #define _snd_hdac_chip_writel(chip, reg, value) \
464 snd_hdac_reg_writel(chip, (chip)->remap_addr + (reg), value)
465 #define _snd_hdac_chip_readl(chip, reg) \
466 snd_hdac_reg_readl(chip, (chip)->remap_addr + (reg))
467
468 /* read/write a register, pass without AZX_REG_ prefix */
469 #define snd_hdac_chip_writel(chip, reg, value) \
470 _snd_hdac_chip_writel(chip, AZX_REG_ ## reg, value)
471 #define snd_hdac_chip_writew(chip, reg, value) \
472 _snd_hdac_chip_writew(chip, AZX_REG_ ## reg, value)
473 #define snd_hdac_chip_writeb(chip, reg, value) \
474 _snd_hdac_chip_writeb(chip, AZX_REG_ ## reg, value)
475 #define snd_hdac_chip_readl(chip, reg) \
476 _snd_hdac_chip_readl(chip, AZX_REG_ ## reg)
477 #define snd_hdac_chip_readw(chip, reg) \
478 _snd_hdac_chip_readw(chip, AZX_REG_ ## reg)
479 #define snd_hdac_chip_readb(chip, reg) \
480 _snd_hdac_chip_readb(chip, AZX_REG_ ## reg)
481
482 /* update a register, pass without AZX_REG_ prefix */
483 #define snd_hdac_chip_updatel(chip, reg, mask, val) \
484 snd_hdac_chip_writel(chip, reg, \
485 (snd_hdac_chip_readl(chip, reg) & ~(mask)) | (val))
486 #define snd_hdac_chip_updatew(chip, reg, mask, val) \
487 snd_hdac_chip_writew(chip, reg, \
488 (snd_hdac_chip_readw(chip, reg) & ~(mask)) | (val))
489 #define snd_hdac_chip_updateb(chip, reg, mask, val) \
490 snd_hdac_chip_writeb(chip, reg, \
491 (snd_hdac_chip_readb(chip, reg) & ~(mask)) | (val))
492
493 /*
494 * HD-audio stream
495 */
496 struct hdac_stream {
497 struct hdac_bus *bus;
498 struct snd_dma_buffer bdl; /* BDL buffer */
499 __le32 *posbuf; /* position buffer pointer */
500 int direction; /* playback / capture (SNDRV_PCM_STREAM_*) */
501
502 unsigned int bufsize; /* size of the play buffer in bytes */
503 unsigned int period_bytes; /* size of the period in bytes */
504 unsigned int frags; /* number for period in the play buffer */
505 unsigned int fifo_size; /* FIFO size */
506
507 void __iomem *sd_addr; /* stream descriptor pointer */
508
509 u32 sd_int_sta_mask; /* stream int status mask */
510
511 /* pcm support */
512 struct snd_pcm_substream *substream; /* assigned substream,
513 * set in PCM open
514 */
515 struct snd_compr_stream *cstream;
516 unsigned int format_val; /* format value to be set in the
517 * controller and the codec
518 */
519 unsigned char stream_tag; /* assigned stream */
520 unsigned char index; /* stream index */
521 int assigned_key; /* last device# key assigned to */
522
523 bool opened:1;
524 bool running:1;
525 bool prepared:1;
526 bool no_period_wakeup:1;
527 bool locked:1;
528 bool stripe:1; /* apply stripe control */
529
530 u64 curr_pos;
531 /* timestamp */
532 unsigned long start_wallclk; /* start + minimum wallclk */
533 unsigned long period_wallclk; /* wallclk for period */
534 struct timecounter tc;
535 struct cyclecounter cc;
536 int delay_negative_threshold;
537
538 struct list_head list;
539 #ifdef CONFIG_SND_HDA_DSP_LOADER
540 /* DSP access mutex */
541 struct mutex dsp_mutex;
542 #endif
543 };
544
545 void snd_hdac_stream_init(struct hdac_bus *bus, struct hdac_stream *azx_dev,
546 int idx, int direction, int tag);
547 struct hdac_stream *snd_hdac_stream_assign(struct hdac_bus *bus,
548 struct snd_pcm_substream *substream);
549 void snd_hdac_stream_release(struct hdac_stream *azx_dev);
550 struct hdac_stream *snd_hdac_get_stream(struct hdac_bus *bus,
551 int dir, int stream_tag);
552
553 int snd_hdac_stream_setup(struct hdac_stream *azx_dev);
554 void snd_hdac_stream_cleanup(struct hdac_stream *azx_dev);
555 int snd_hdac_stream_setup_periods(struct hdac_stream *azx_dev);
556 int snd_hdac_stream_set_params(struct hdac_stream *azx_dev,
557 unsigned int format_val);
558 void snd_hdac_stream_start(struct hdac_stream *azx_dev, bool fresh_start);
559 void snd_hdac_stream_clear(struct hdac_stream *azx_dev);
560 void snd_hdac_stream_stop(struct hdac_stream *azx_dev);
561 void snd_hdac_stream_reset(struct hdac_stream *azx_dev);
562 void snd_hdac_stream_sync_trigger(struct hdac_stream *azx_dev, bool set,
563 unsigned int streams, unsigned int reg);
564 void snd_hdac_stream_sync(struct hdac_stream *azx_dev, bool start,
565 unsigned int streams);
566 void snd_hdac_stream_timecounter_init(struct hdac_stream *azx_dev,
567 unsigned int streams);
568 int snd_hdac_get_stream_stripe_ctl(struct hdac_bus *bus,
569 struct snd_pcm_substream *substream);
570
571 /*
572 * macros for easy use
573 */
574 /* read/write a register, pass without AZX_REG_ prefix */
575 #define snd_hdac_stream_writel(dev, reg, value) \
576 snd_hdac_reg_writel((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg, value)
577 #define snd_hdac_stream_writew(dev, reg, value) \
578 snd_hdac_reg_writew((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg, value)
579 #define snd_hdac_stream_writeb(dev, reg, value) \
580 snd_hdac_reg_writeb((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg, value)
581 #define snd_hdac_stream_readl(dev, reg) \
582 snd_hdac_reg_readl((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg)
583 #define snd_hdac_stream_readw(dev, reg) \
584 snd_hdac_reg_readw((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg)
585 #define snd_hdac_stream_readb(dev, reg) \
586 snd_hdac_reg_readb((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg)
587
588 /* update a register, pass without AZX_REG_ prefix */
589 #define snd_hdac_stream_updatel(dev, reg, mask, val) \
590 snd_hdac_stream_writel(dev, reg, \
591 (snd_hdac_stream_readl(dev, reg) & \
592 ~(mask)) | (val))
593 #define snd_hdac_stream_updatew(dev, reg, mask, val) \
594 snd_hdac_stream_writew(dev, reg, \
595 (snd_hdac_stream_readw(dev, reg) & \
596 ~(mask)) | (val))
597 #define snd_hdac_stream_updateb(dev, reg, mask, val) \
598 snd_hdac_stream_writeb(dev, reg, \
599 (snd_hdac_stream_readb(dev, reg) & \
600 ~(mask)) | (val))
601
602 #ifdef CONFIG_SND_HDA_DSP_LOADER
603 /* DSP lock helpers */
604 #define snd_hdac_dsp_lock_init(dev) mutex_init(&(dev)->dsp_mutex)
605 #define snd_hdac_dsp_lock(dev) mutex_lock(&(dev)->dsp_mutex)
606 #define snd_hdac_dsp_unlock(dev) mutex_unlock(&(dev)->dsp_mutex)
607 #define snd_hdac_stream_is_locked(dev) ((dev)->locked)
608 /* DSP loader helpers */
609 int snd_hdac_dsp_prepare(struct hdac_stream *azx_dev, unsigned int format,
610 unsigned int byte_size, struct snd_dma_buffer *bufp);
611 void snd_hdac_dsp_trigger(struct hdac_stream *azx_dev, bool start);
612 void snd_hdac_dsp_cleanup(struct hdac_stream *azx_dev,
613 struct snd_dma_buffer *dmab);
614 #else /* CONFIG_SND_HDA_DSP_LOADER */
615 #define snd_hdac_dsp_lock_init(dev) do {} while (0)
616 #define snd_hdac_dsp_lock(dev) do {} while (0)
617 #define snd_hdac_dsp_unlock(dev) do {} while (0)
618 #define snd_hdac_stream_is_locked(dev) 0
619
620 static inline int
snd_hdac_dsp_prepare(struct hdac_stream * azx_dev,unsigned int format,unsigned int byte_size,struct snd_dma_buffer * bufp)621 snd_hdac_dsp_prepare(struct hdac_stream *azx_dev, unsigned int format,
622 unsigned int byte_size, struct snd_dma_buffer *bufp)
623 {
624 return 0;
625 }
626
snd_hdac_dsp_trigger(struct hdac_stream * azx_dev,bool start)627 static inline void snd_hdac_dsp_trigger(struct hdac_stream *azx_dev, bool start)
628 {
629 }
630
snd_hdac_dsp_cleanup(struct hdac_stream * azx_dev,struct snd_dma_buffer * dmab)631 static inline void snd_hdac_dsp_cleanup(struct hdac_stream *azx_dev,
632 struct snd_dma_buffer *dmab)
633 {
634 }
635 #endif /* CONFIG_SND_HDA_DSP_LOADER */
636
637
638 /*
639 * generic array helpers
640 */
641 void *snd_array_new(struct snd_array *array);
642 void snd_array_free(struct snd_array *array);
snd_array_init(struct snd_array * array,unsigned int size,unsigned int align)643 static inline void snd_array_init(struct snd_array *array, unsigned int size,
644 unsigned int align)
645 {
646 array->elem_size = size;
647 array->alloc_align = align;
648 }
649
snd_array_elem(struct snd_array * array,unsigned int idx)650 static inline void *snd_array_elem(struct snd_array *array, unsigned int idx)
651 {
652 return array->list + idx * array->elem_size;
653 }
654
snd_array_index(struct snd_array * array,void * ptr)655 static inline unsigned int snd_array_index(struct snd_array *array, void *ptr)
656 {
657 return (unsigned long)(ptr - array->list) / array->elem_size;
658 }
659
660 /* a helper macro to iterate for each snd_array element */
661 #define snd_array_for_each(array, idx, ptr) \
662 for ((idx) = 0, (ptr) = (array)->list; (idx) < (array)->used; \
663 (ptr) = snd_array_elem(array, ++(idx)))
664
665 #endif /* __SOUND_HDAUDIO_H */
666
