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/io-64-nonatomic-lo-hi.h>
13 #include <linux/pm_runtime.h>
14 #include <linux/timecounter.h>
15 #include <sound/core.h>
16 #include <sound/pcm.h>
17 #include <sound/memalloc.h>
18 #include <sound/hda_verbs.h>
19 #include <drm/i915_component.h>
20
21 /* codec node id */
22 typedef u16 hda_nid_t;
23
24 struct hdac_bus;
25 struct hdac_stream;
26 struct hdac_device;
27 struct hdac_driver;
28 struct hdac_widget_tree;
29 struct hda_device_id;
30
31 /*
32 * exported bus type
33 */
34 extern struct bus_type snd_hda_bus_type;
35
36 /*
37 * generic arrays
38 */
39 struct snd_array {
40 unsigned int used;
41 unsigned int alloced;
42 unsigned int elem_size;
43 unsigned int alloc_align;
44 void *list;
45 };
46
47 /*
48 * HD-audio codec base device
49 */
50 struct hdac_device {
51 struct device dev;
52 int type;
53 struct hdac_bus *bus;
54 unsigned int addr; /* codec address */
55 struct list_head list; /* list point for bus codec_list */
56
57 hda_nid_t afg; /* AFG node id */
58 hda_nid_t mfg; /* MFG node id */
59
60 /* ids */
61 unsigned int vendor_id;
62 unsigned int subsystem_id;
63 unsigned int revision_id;
64 unsigned int afg_function_id;
65 unsigned int mfg_function_id;
66 unsigned int afg_unsol:1;
67 unsigned int mfg_unsol:1;
68
69 unsigned int power_caps; /* FG power caps */
70
71 const char *vendor_name; /* codec vendor name */
72 const char *chip_name; /* codec chip name */
73
74 /* verb exec op override */
75 int (*exec_verb)(struct hdac_device *dev, unsigned int cmd,
76 unsigned int flags, unsigned int *res);
77
78 /* widgets */
79 unsigned int num_nodes;
80 hda_nid_t start_nid, end_nid;
81
82 /* misc flags */
83 atomic_t in_pm; /* suspend/resume being performed */
84
85 /* sysfs */
86 struct mutex widget_lock;
87 struct hdac_widget_tree *widgets;
88
89 /* regmap */
90 struct regmap *regmap;
91 struct mutex regmap_lock;
92 struct snd_array vendor_verbs;
93 bool lazy_cache:1; /* don't wake up for writes */
94 bool caps_overwriting:1; /* caps overwrite being in process */
95 bool cache_coef:1; /* cache COEF read/write too */
96 };
97
98 /* device/driver type used for matching */
99 enum {
100 HDA_DEV_CORE,
101 HDA_DEV_LEGACY,
102 HDA_DEV_ASOC,
103 };
104
105 enum {
106 SND_SKL_PCI_BIND_AUTO, /* automatic selection based on pci class */
107 SND_SKL_PCI_BIND_LEGACY,/* bind only with legacy driver */
108 SND_SKL_PCI_BIND_ASOC /* bind only with ASoC driver */
109 };
110
111 /* direction */
112 enum {
113 HDA_INPUT, HDA_OUTPUT
114 };
115
116 #define dev_to_hdac_dev(_dev) container_of(_dev, struct hdac_device, dev)
117
118 int snd_hdac_device_init(struct hdac_device *dev, struct hdac_bus *bus,
119 const char *name, unsigned int addr);
120 void snd_hdac_device_exit(struct hdac_device *dev);
121 int snd_hdac_device_register(struct hdac_device *codec);
122 void snd_hdac_device_unregister(struct hdac_device *codec);
123 int snd_hdac_device_set_chip_name(struct hdac_device *codec, const char *name);
124 int snd_hdac_codec_modalias(struct hdac_device *hdac, char *buf, size_t size);
125
126 int snd_hdac_refresh_widgets(struct hdac_device *codec);
127
128 int snd_hdac_read(struct hdac_device *codec, hda_nid_t nid,
129 unsigned int verb, unsigned int parm, unsigned int *res);
130 int _snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm,
131 unsigned int *res);
132 int snd_hdac_read_parm_uncached(struct hdac_device *codec, hda_nid_t nid,
133 int parm);
134 int snd_hdac_override_parm(struct hdac_device *codec, hda_nid_t nid,
135 unsigned int parm, unsigned int val);
136 int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid,
137 hda_nid_t *conn_list, int max_conns);
138 int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid,
139 hda_nid_t *start_id);
140 unsigned int snd_hdac_calc_stream_format(unsigned int rate,
141 unsigned int channels,
142 snd_pcm_format_t format,
143 unsigned int maxbps,
144 unsigned short spdif_ctls);
145 int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid,
146 u32 *ratesp, u64 *formatsp, unsigned int *bpsp);
147 bool snd_hdac_is_supported_format(struct hdac_device *codec, hda_nid_t nid,
148 unsigned int format);
149
150 int snd_hdac_codec_read(struct hdac_device *hdac, hda_nid_t nid,
151 int flags, unsigned int verb, unsigned int parm);
152 int snd_hdac_codec_write(struct hdac_device *hdac, hda_nid_t nid,
153 int flags, unsigned int verb, unsigned int parm);
154 bool snd_hdac_check_power_state(struct hdac_device *hdac,
155 hda_nid_t nid, unsigned int target_state);
156 unsigned int snd_hdac_sync_power_state(struct hdac_device *hdac,
157 hda_nid_t nid, unsigned int target_state);
158 /**
159 * snd_hdac_read_parm - read a codec parameter
160 * @codec: the codec object
161 * @nid: NID to read a parameter
162 * @parm: parameter to read
163 *
164 * Returns -1 for error. If you need to distinguish the error more
165 * strictly, use _snd_hdac_read_parm() directly.
166 */
snd_hdac_read_parm(struct hdac_device * codec,hda_nid_t nid,int parm)167 static inline int snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid,
168 int parm)
169 {
170 unsigned int val;
171
172 return _snd_hdac_read_parm(codec, nid, parm, &val) < 0 ? -1 : val;
173 }
174
175 #ifdef CONFIG_PM
176 int snd_hdac_power_up(struct hdac_device *codec);
177 int snd_hdac_power_down(struct hdac_device *codec);
178 int snd_hdac_power_up_pm(struct hdac_device *codec);
179 int snd_hdac_power_down_pm(struct hdac_device *codec);
180 int snd_hdac_keep_power_up(struct hdac_device *codec);
181
182 /* call this at entering into suspend/resume callbacks in codec driver */
snd_hdac_enter_pm(struct hdac_device * codec)183 static inline void snd_hdac_enter_pm(struct hdac_device *codec)
184 {
185 atomic_inc(&codec->in_pm);
186 }
187
188 /* call this at leaving from suspend/resume callbacks in codec driver */
snd_hdac_leave_pm(struct hdac_device * codec)189 static inline void snd_hdac_leave_pm(struct hdac_device *codec)
190 {
191 atomic_dec(&codec->in_pm);
192 }
193
snd_hdac_is_in_pm(struct hdac_device * codec)194 static inline bool snd_hdac_is_in_pm(struct hdac_device *codec)
195 {
196 return atomic_read(&codec->in_pm);
197 }
198
snd_hdac_is_power_on(struct hdac_device * codec)199 static inline bool snd_hdac_is_power_on(struct hdac_device *codec)
200 {
201 return !pm_runtime_suspended(&codec->dev);
202 }
203 #else
snd_hdac_power_up(struct hdac_device * codec)204 static inline int snd_hdac_power_up(struct hdac_device *codec) { return 0; }
snd_hdac_power_down(struct hdac_device * codec)205 static inline int snd_hdac_power_down(struct hdac_device *codec) { return 0; }
snd_hdac_power_up_pm(struct hdac_device * codec)206 static inline int snd_hdac_power_up_pm(struct hdac_device *codec) { return 0; }
snd_hdac_power_down_pm(struct hdac_device * codec)207 static inline int snd_hdac_power_down_pm(struct hdac_device *codec) { return 0; }
snd_hdac_keep_power_up(struct hdac_device * codec)208 static inline int snd_hdac_keep_power_up(struct hdac_device *codec) { return 0; }
snd_hdac_enter_pm(struct hdac_device * codec)209 static inline void snd_hdac_enter_pm(struct hdac_device *codec) {}
snd_hdac_leave_pm(struct hdac_device * codec)210 static inline void snd_hdac_leave_pm(struct hdac_device *codec) {}
snd_hdac_is_in_pm(struct hdac_device * codec)211 static inline bool snd_hdac_is_in_pm(struct hdac_device *codec) { return false; }
snd_hdac_is_power_on(struct hdac_device * codec)212 static inline bool snd_hdac_is_power_on(struct hdac_device *codec) { return true; }
213 #endif
214
215 /*
216 * HD-audio codec base driver
217 */
218 struct hdac_driver {
219 struct device_driver driver;
220 int type;
221 const struct hda_device_id *id_table;
222 int (*match)(struct hdac_device *dev, struct hdac_driver *drv);
223 void (*unsol_event)(struct hdac_device *dev, unsigned int event);
224
225 /* fields used by ext bus APIs */
226 int (*probe)(struct hdac_device *dev);
227 int (*remove)(struct hdac_device *dev);
228 void (*shutdown)(struct hdac_device *dev);
229 };
230
231 #define drv_to_hdac_driver(_drv) container_of(_drv, struct hdac_driver, driver)
232
233 const struct hda_device_id *
234 hdac_get_device_id(struct hdac_device *hdev, struct hdac_driver *drv);
235
236 /*
237 * Bus verb operators
238 */
239 struct hdac_bus_ops {
240 /* send a single command */
241 int (*command)(struct hdac_bus *bus, unsigned int cmd);
242 /* get a response from the last command */
243 int (*get_response)(struct hdac_bus *bus, unsigned int addr,
244 unsigned int *res);
245 /* notify of codec link power-up/down */
246 void (*link_power)(struct hdac_device *hdev, bool enable);
247 };
248
249 /*
250 * ops used for ASoC HDA codec drivers
251 */
252 struct hdac_ext_bus_ops {
253 int (*hdev_attach)(struct hdac_device *hdev);
254 int (*hdev_detach)(struct hdac_device *hdev);
255 };
256
257 #define HDA_UNSOL_QUEUE_SIZE 64
258 #define HDA_MAX_CODECS 8 /* limit by controller side */
259
260 /*
261 * CORB/RIRB
262 *
263 * Each CORB entry is 4byte, RIRB is 8byte
264 */
265 struct hdac_rb {
266 __le32 *buf; /* virtual address of CORB/RIRB buffer */
267 dma_addr_t addr; /* physical address of CORB/RIRB buffer */
268 unsigned short rp, wp; /* RIRB read/write pointers */
269 int cmds[HDA_MAX_CODECS]; /* number of pending requests */
270 u32 res[HDA_MAX_CODECS]; /* last read value */
271 };
272
273 /*
274 * HD-audio bus base driver
275 *
276 * @ppcap: pp capabilities pointer
277 * @spbcap: SPIB capabilities pointer
278 * @mlcap: MultiLink capabilities pointer
279 * @gtscap: gts capabilities pointer
280 * @drsmcap: dma resume capabilities pointer
281 * @num_streams: streams supported
282 * @idx: HDA link index
283 * @hlink_list: link list of HDA links
284 * @lock: lock for link and display power mgmt
285 * @cmd_dma_state: state of cmd DMAs: CORB and RIRB
286 */
287 struct hdac_bus {
288 struct device *dev;
289 const struct hdac_bus_ops *ops;
290 const struct hdac_ext_bus_ops *ext_ops;
291
292 /* h/w resources */
293 unsigned long addr;
294 void __iomem *remap_addr;
295 int irq;
296
297 void __iomem *ppcap;
298 void __iomem *spbcap;
299 void __iomem *mlcap;
300 void __iomem *gtscap;
301 void __iomem *drsmcap;
302
303 /* codec linked list */
304 struct list_head codec_list;
305 unsigned int num_codecs;
306
307 /* link caddr -> codec */
308 struct hdac_device *caddr_tbl[HDA_MAX_CODEC_ADDRESS + 1];
309
310 /* unsolicited event queue */
311 u32 unsol_queue[HDA_UNSOL_QUEUE_SIZE * 2]; /* ring buffer */
312 unsigned int unsol_rp, unsol_wp;
313 struct work_struct unsol_work;
314
315 /* bit flags of detected codecs */
316 unsigned long codec_mask;
317
318 /* bit flags of powered codecs */
319 unsigned long codec_powered;
320
321 /* CORB/RIRB */
322 struct hdac_rb corb;
323 struct hdac_rb rirb;
324 unsigned int last_cmd[HDA_MAX_CODECS]; /* last sent command */
325 wait_queue_head_t rirb_wq;
326
327 /* CORB/RIRB and position buffers */
328 struct snd_dma_buffer rb;
329 struct snd_dma_buffer posbuf;
330 int dma_type; /* SNDRV_DMA_TYPE_XXX for CORB/RIRB */
331
332 /* hdac_stream linked list */
333 struct list_head stream_list;
334
335 /* operation state */
336 bool chip_init:1; /* h/w initialized */
337
338 /* behavior flags */
339 bool aligned_mmio:1; /* aligned MMIO access */
340 bool sync_write:1; /* sync after verb write */
341 bool use_posbuf:1; /* use position buffer */
342 bool snoop:1; /* enable snooping */
343 bool align_bdle_4k:1; /* BDLE align 4K boundary */
344 bool reverse_assign:1; /* assign devices in reverse order */
345 bool corbrp_self_clear:1; /* CORBRP clears itself after reset */
346 bool polling_mode:1;
347 bool needs_damn_long_delay:1;
348
349 int poll_count;
350
351 int bdl_pos_adj; /* BDL position adjustment */
352
353 /* delay time in us for dma stop */
354 unsigned int dma_stop_delay;
355
356 /* locks */
357 spinlock_t reg_lock;
358 struct mutex cmd_mutex;
359 struct mutex lock;
360
361 /* DRM component interface */
362 struct drm_audio_component *audio_component;
363 long display_power_status;
364 unsigned long display_power_active;
365
366 /* parameters required for enhanced capabilities */
367 int num_streams;
368 int idx;
369
370 /* link management */
371 struct list_head hlink_list;
372 bool cmd_dma_state;
373
374 /* factor used to derive STRIPE control value */
375 unsigned int sdo_limit;
376 };
377
378 int snd_hdac_bus_init(struct hdac_bus *bus, struct device *dev,
379 const struct hdac_bus_ops *ops);
380 void snd_hdac_bus_exit(struct hdac_bus *bus);
381 int snd_hdac_bus_exec_verb_unlocked(struct hdac_bus *bus, unsigned int addr,
382 unsigned int cmd, unsigned int *res);
383
384 void snd_hdac_codec_link_up(struct hdac_device *codec);
385 void snd_hdac_codec_link_down(struct hdac_device *codec);
386
387 int snd_hdac_bus_send_cmd(struct hdac_bus *bus, unsigned int val);
388 int snd_hdac_bus_get_response(struct hdac_bus *bus, unsigned int addr,
389 unsigned int *res);
390 int snd_hdac_bus_parse_capabilities(struct hdac_bus *bus);
391
392 bool snd_hdac_bus_init_chip(struct hdac_bus *bus, bool full_reset);
393 void snd_hdac_bus_stop_chip(struct hdac_bus *bus);
394 void snd_hdac_bus_init_cmd_io(struct hdac_bus *bus);
395 void snd_hdac_bus_stop_cmd_io(struct hdac_bus *bus);
396 void snd_hdac_bus_enter_link_reset(struct hdac_bus *bus);
397 void snd_hdac_bus_exit_link_reset(struct hdac_bus *bus);
398 int snd_hdac_bus_reset_link(struct hdac_bus *bus, bool full_reset);
399 void snd_hdac_bus_link_power(struct hdac_device *hdev, bool enable);
400
401 void snd_hdac_bus_update_rirb(struct hdac_bus *bus);
402 int snd_hdac_bus_handle_stream_irq(struct hdac_bus *bus, unsigned int status,
403 void (*ack)(struct hdac_bus *,
404 struct hdac_stream *));
405
406 int snd_hdac_bus_alloc_stream_pages(struct hdac_bus *bus);
407 void snd_hdac_bus_free_stream_pages(struct hdac_bus *bus);
408
409 #ifdef CONFIG_SND_HDA_ALIGNED_MMIO
410 unsigned int snd_hdac_aligned_read(void __iomem *addr, unsigned int mask);
411 void snd_hdac_aligned_write(unsigned int val, void __iomem *addr,
412 unsigned int mask);
413 #define snd_hdac_aligned_mmio(bus) (bus)->aligned_mmio
414 #else
415 #define snd_hdac_aligned_mmio(bus) false
416 #define snd_hdac_aligned_read(addr, mask) 0
417 #define snd_hdac_aligned_write(val, addr, mask) do {} while (0)
418 #endif
419
snd_hdac_reg_writeb(struct hdac_bus * bus,void __iomem * addr,u8 val)420 static inline void snd_hdac_reg_writeb(struct hdac_bus *bus, void __iomem *addr,
421 u8 val)
422 {
423 if (snd_hdac_aligned_mmio(bus))
424 snd_hdac_aligned_write(val, addr, 0xff);
425 else
426 writeb(val, addr);
427 }
428
snd_hdac_reg_writew(struct hdac_bus * bus,void __iomem * addr,u16 val)429 static inline void snd_hdac_reg_writew(struct hdac_bus *bus, void __iomem *addr,
430 u16 val)
431 {
432 if (snd_hdac_aligned_mmio(bus))
433 snd_hdac_aligned_write(val, addr, 0xffff);
434 else
435 writew(val, addr);
436 }
437
snd_hdac_reg_readb(struct hdac_bus * bus,void __iomem * addr)438 static inline u8 snd_hdac_reg_readb(struct hdac_bus *bus, void __iomem *addr)
439 {
440 return snd_hdac_aligned_mmio(bus) ?
441 snd_hdac_aligned_read(addr, 0xff) : readb(addr);
442 }
443
snd_hdac_reg_readw(struct hdac_bus * bus,void __iomem * addr)444 static inline u16 snd_hdac_reg_readw(struct hdac_bus *bus, void __iomem *addr)
445 {
446 return snd_hdac_aligned_mmio(bus) ?
447 snd_hdac_aligned_read(addr, 0xffff) : readw(addr);
448 }
449
450 #define snd_hdac_reg_writel(bus, addr, val) writel(val, addr)
451 #define snd_hdac_reg_readl(bus, addr) readl(addr)
452 #define snd_hdac_reg_writeq(bus, addr, val) writeq(val, addr)
453 #define snd_hdac_reg_readq(bus, addr) readq(addr)
454
455 /*
456 * macros for easy use
457 */
458 #define _snd_hdac_chip_writeb(chip, reg, value) \
459 snd_hdac_reg_writeb(chip, (chip)->remap_addr + (reg), value)
460 #define _snd_hdac_chip_readb(chip, reg) \
461 snd_hdac_reg_readb(chip, (chip)->remap_addr + (reg))
462 #define _snd_hdac_chip_writew(chip, reg, value) \
463 snd_hdac_reg_writew(chip, (chip)->remap_addr + (reg), value)
464 #define _snd_hdac_chip_readw(chip, reg) \
465 snd_hdac_reg_readw(chip, (chip)->remap_addr + (reg))
466 #define _snd_hdac_chip_writel(chip, reg, value) \
467 snd_hdac_reg_writel(chip, (chip)->remap_addr + (reg), value)
468 #define _snd_hdac_chip_readl(chip, reg) \
469 snd_hdac_reg_readl(chip, (chip)->remap_addr + (reg))
470
471 /* read/write a register, pass without AZX_REG_ prefix */
472 #define snd_hdac_chip_writel(chip, reg, value) \
473 _snd_hdac_chip_writel(chip, AZX_REG_ ## reg, value)
474 #define snd_hdac_chip_writew(chip, reg, value) \
475 _snd_hdac_chip_writew(chip, AZX_REG_ ## reg, value)
476 #define snd_hdac_chip_writeb(chip, reg, value) \
477 _snd_hdac_chip_writeb(chip, AZX_REG_ ## reg, value)
478 #define snd_hdac_chip_readl(chip, reg) \
479 _snd_hdac_chip_readl(chip, AZX_REG_ ## reg)
480 #define snd_hdac_chip_readw(chip, reg) \
481 _snd_hdac_chip_readw(chip, AZX_REG_ ## reg)
482 #define snd_hdac_chip_readb(chip, reg) \
483 _snd_hdac_chip_readb(chip, AZX_REG_ ## reg)
484
485 /* update a register, pass without AZX_REG_ prefix */
486 #define snd_hdac_chip_updatel(chip, reg, mask, val) \
487 snd_hdac_chip_writel(chip, reg, \
488 (snd_hdac_chip_readl(chip, reg) & ~(mask)) | (val))
489 #define snd_hdac_chip_updatew(chip, reg, mask, val) \
490 snd_hdac_chip_writew(chip, reg, \
491 (snd_hdac_chip_readw(chip, reg) & ~(mask)) | (val))
492 #define snd_hdac_chip_updateb(chip, reg, mask, val) \
493 snd_hdac_chip_writeb(chip, reg, \
494 (snd_hdac_chip_readb(chip, reg) & ~(mask)) | (val))
495
496 /*
497 * HD-audio stream
498 */
499 struct hdac_stream {
500 struct hdac_bus *bus;
501 struct snd_dma_buffer bdl; /* BDL buffer */
502 __le32 *posbuf; /* position buffer pointer */
503 int direction; /* playback / capture (SNDRV_PCM_STREAM_*) */
504
505 unsigned int bufsize; /* size of the play buffer in bytes */
506 unsigned int period_bytes; /* size of the period in bytes */
507 unsigned int frags; /* number for period in the play buffer */
508 unsigned int fifo_size; /* FIFO size */
509
510 void __iomem *sd_addr; /* stream descriptor pointer */
511
512 u32 sd_int_sta_mask; /* stream int status mask */
513
514 /* pcm support */
515 struct snd_pcm_substream *substream; /* assigned substream,
516 * set in PCM open
517 */
518 struct snd_compr_stream *cstream;
519 unsigned int format_val; /* format value to be set in the
520 * controller and the codec
521 */
522 unsigned char stream_tag; /* assigned stream */
523 unsigned char index; /* stream index */
524 int assigned_key; /* last device# key assigned to */
525
526 bool opened:1;
527 bool running:1;
528 bool prepared:1;
529 bool no_period_wakeup:1;
530 bool locked:1;
531 bool stripe:1; /* apply stripe control */
532
533 u64 curr_pos;
534 /* timestamp */
535 unsigned long start_wallclk; /* start + minimum wallclk */
536 unsigned long period_wallclk; /* wallclk for period */
537 struct timecounter tc;
538 struct cyclecounter cc;
539 int delay_negative_threshold;
540
541 struct list_head list;
542 #ifdef CONFIG_SND_HDA_DSP_LOADER
543 /* DSP access mutex */
544 struct mutex dsp_mutex;
545 #endif
546 };
547
548 void snd_hdac_stream_init(struct hdac_bus *bus, struct hdac_stream *azx_dev,
549 int idx, int direction, int tag);
550 struct hdac_stream *snd_hdac_stream_assign(struct hdac_bus *bus,
551 struct snd_pcm_substream *substream);
552 void snd_hdac_stream_release(struct hdac_stream *azx_dev);
553 struct hdac_stream *snd_hdac_get_stream(struct hdac_bus *bus,
554 int dir, int stream_tag);
555
556 int snd_hdac_stream_setup(struct hdac_stream *azx_dev);
557 void snd_hdac_stream_cleanup(struct hdac_stream *azx_dev);
558 int snd_hdac_stream_setup_periods(struct hdac_stream *azx_dev);
559 int snd_hdac_stream_set_params(struct hdac_stream *azx_dev,
560 unsigned int format_val);
561 void snd_hdac_stream_start(struct hdac_stream *azx_dev, bool fresh_start);
562 void snd_hdac_stream_clear(struct hdac_stream *azx_dev);
563 void snd_hdac_stream_stop(struct hdac_stream *azx_dev);
564 void snd_hdac_stop_streams_and_chip(struct hdac_bus *bus);
565 void snd_hdac_stream_reset(struct hdac_stream *azx_dev);
566 void snd_hdac_stream_sync_trigger(struct hdac_stream *azx_dev, bool set,
567 unsigned int streams, unsigned int reg);
568 void snd_hdac_stream_sync(struct hdac_stream *azx_dev, bool start,
569 unsigned int streams);
570 void snd_hdac_stream_timecounter_init(struct hdac_stream *azx_dev,
571 unsigned int streams);
572 int snd_hdac_get_stream_stripe_ctl(struct hdac_bus *bus,
573 struct snd_pcm_substream *substream);
574
575 /*
576 * macros for easy use
577 */
578 /* read/write a register, pass without AZX_REG_ prefix */
579 #define snd_hdac_stream_writel(dev, reg, value) \
580 snd_hdac_reg_writel((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg, value)
581 #define snd_hdac_stream_writew(dev, reg, value) \
582 snd_hdac_reg_writew((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg, value)
583 #define snd_hdac_stream_writeb(dev, reg, value) \
584 snd_hdac_reg_writeb((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg, value)
585 #define snd_hdac_stream_readl(dev, reg) \
586 snd_hdac_reg_readl((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg)
587 #define snd_hdac_stream_readw(dev, reg) \
588 snd_hdac_reg_readw((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg)
589 #define snd_hdac_stream_readb(dev, reg) \
590 snd_hdac_reg_readb((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg)
591
592 /* update a register, pass without AZX_REG_ prefix */
593 #define snd_hdac_stream_updatel(dev, reg, mask, val) \
594 snd_hdac_stream_writel(dev, reg, \
595 (snd_hdac_stream_readl(dev, reg) & \
596 ~(mask)) | (val))
597 #define snd_hdac_stream_updatew(dev, reg, mask, val) \
598 snd_hdac_stream_writew(dev, reg, \
599 (snd_hdac_stream_readw(dev, reg) & \
600 ~(mask)) | (val))
601 #define snd_hdac_stream_updateb(dev, reg, mask, val) \
602 snd_hdac_stream_writeb(dev, reg, \
603 (snd_hdac_stream_readb(dev, reg) & \
604 ~(mask)) | (val))
605
606 #ifdef CONFIG_SND_HDA_DSP_LOADER
607 /* DSP lock helpers */
608 #define snd_hdac_dsp_lock_init(dev) mutex_init(&(dev)->dsp_mutex)
609 #define snd_hdac_dsp_lock(dev) mutex_lock(&(dev)->dsp_mutex)
610 #define snd_hdac_dsp_unlock(dev) mutex_unlock(&(dev)->dsp_mutex)
611 #define snd_hdac_stream_is_locked(dev) ((dev)->locked)
612 /* DSP loader helpers */
613 int snd_hdac_dsp_prepare(struct hdac_stream *azx_dev, unsigned int format,
614 unsigned int byte_size, struct snd_dma_buffer *bufp);
615 void snd_hdac_dsp_trigger(struct hdac_stream *azx_dev, bool start);
616 void snd_hdac_dsp_cleanup(struct hdac_stream *azx_dev,
617 struct snd_dma_buffer *dmab);
618 #else /* CONFIG_SND_HDA_DSP_LOADER */
619 #define snd_hdac_dsp_lock_init(dev) do {} while (0)
620 #define snd_hdac_dsp_lock(dev) do {} while (0)
621 #define snd_hdac_dsp_unlock(dev) do {} while (0)
622 #define snd_hdac_stream_is_locked(dev) 0
623
624 static inline int
snd_hdac_dsp_prepare(struct hdac_stream * azx_dev,unsigned int format,unsigned int byte_size,struct snd_dma_buffer * bufp)625 snd_hdac_dsp_prepare(struct hdac_stream *azx_dev, unsigned int format,
626 unsigned int byte_size, struct snd_dma_buffer *bufp)
627 {
628 return 0;
629 }
630
snd_hdac_dsp_trigger(struct hdac_stream * azx_dev,bool start)631 static inline void snd_hdac_dsp_trigger(struct hdac_stream *azx_dev, bool start)
632 {
633 }
634
snd_hdac_dsp_cleanup(struct hdac_stream * azx_dev,struct snd_dma_buffer * dmab)635 static inline void snd_hdac_dsp_cleanup(struct hdac_stream *azx_dev,
636 struct snd_dma_buffer *dmab)
637 {
638 }
639 #endif /* CONFIG_SND_HDA_DSP_LOADER */
640
641
642 /*
643 * generic array helpers
644 */
645 void *snd_array_new(struct snd_array *array);
646 void snd_array_free(struct snd_array *array);
snd_array_init(struct snd_array * array,unsigned int size,unsigned int align)647 static inline void snd_array_init(struct snd_array *array, unsigned int size,
648 unsigned int align)
649 {
650 array->elem_size = size;
651 array->alloc_align = align;
652 }
653
snd_array_elem(struct snd_array * array,unsigned int idx)654 static inline void *snd_array_elem(struct snd_array *array, unsigned int idx)
655 {
656 return array->list + idx * array->elem_size;
657 }
658
snd_array_index(struct snd_array * array,void * ptr)659 static inline unsigned int snd_array_index(struct snd_array *array, void *ptr)
660 {
661 return (unsigned long)(ptr - array->list) / array->elem_size;
662 }
663
664 /* a helper macro to iterate for each snd_array element */
665 #define snd_array_for_each(array, idx, ptr) \
666 for ((idx) = 0, (ptr) = (array)->list; (idx) < (array)->used; \
667 (ptr) = snd_array_elem(array, ++(idx)))
668
669 #endif /* __SOUND_HDAUDIO_H */
670