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TOMOYO Linux Cross Reference
Linux/include/sound/hdaudio.h

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  1 /*
  2  * HD-audio core stuff
  3  */
  4 
  5 #ifndef __SOUND_HDAUDIO_H
  6 #define __SOUND_HDAUDIO_H
  7 
  8 #include <linux/device.h>
  9 #include <linux/interrupt.h>
 10 #include <linux/timecounter.h>
 11 #include <sound/core.h>
 12 #include <sound/memalloc.h>
 13 #include <sound/hda_verbs.h>
 14 #include <drm/i915_component.h>
 15 
 16 /* codec node id */
 17 typedef u16 hda_nid_t;
 18 
 19 struct hdac_bus;
 20 struct hdac_stream;
 21 struct hdac_device;
 22 struct hdac_driver;
 23 struct hdac_widget_tree;
 24 
 25 /*
 26  * exported bus type
 27  */
 28 extern struct bus_type snd_hda_bus_type;
 29 
 30 /*
 31  * HDA device table
 32  */
 33 struct hda_device_id {
 34         __u32 vendor_id;
 35         __u32 rev_id;
 36         const char *name;
 37         unsigned long driver_data;
 38 };
 39 
 40 /*
 41  * generic arrays
 42  */
 43 struct snd_array {
 44         unsigned int used;
 45         unsigned int alloced;
 46         unsigned int elem_size;
 47         unsigned int alloc_align;
 48         void *list;
 49 };
 50 
 51 /*
 52  * HD-audio codec base device
 53  */
 54 struct hdac_device {
 55         struct device dev;
 56         int type;
 57         struct hdac_bus *bus;
 58         unsigned int addr;              /* codec address */
 59         struct list_head list;          /* list point for bus codec_list */
 60 
 61         hda_nid_t afg;                  /* AFG node id */
 62         hda_nid_t mfg;                  /* MFG node id */
 63 
 64         /* ids */
 65         unsigned int vendor_id;
 66         unsigned int subsystem_id;
 67         unsigned int revision_id;
 68         unsigned int afg_function_id;
 69         unsigned int mfg_function_id;
 70         unsigned int afg_unsol:1;
 71         unsigned int mfg_unsol:1;
 72 
 73         unsigned int power_caps;        /* FG power caps */
 74 
 75         const char *vendor_name;        /* codec vendor name */
 76         const char *chip_name;          /* codec chip name */
 77 
 78         /* verb exec op override */
 79         int (*exec_verb)(struct hdac_device *dev, unsigned int cmd,
 80                          unsigned int flags, unsigned int *res);
 81 
 82         /* widgets */
 83         unsigned int num_nodes;
 84         hda_nid_t start_nid, end_nid;
 85 
 86         /* misc flags */
 87         atomic_t in_pm;         /* suspend/resume being performed */
 88         bool  link_power_control:1;
 89 
 90         /* sysfs */
 91         struct hdac_widget_tree *widgets;
 92 
 93         /* regmap */
 94         struct regmap *regmap;
 95         struct snd_array vendor_verbs;
 96         bool lazy_cache:1;      /* don't wake up for writes */
 97         bool caps_overwriting:1; /* caps overwrite being in process */
 98         bool cache_coef:1;      /* cache COEF read/write too */
 99 };
100 
101 /* device/driver type used for matching */
102 enum {
103         HDA_DEV_CORE,
104         HDA_DEV_LEGACY,
105         HDA_DEV_ASOC,
106 };
107 
108 /* direction */
109 enum {
110         HDA_INPUT, HDA_OUTPUT
111 };
112 
113 #define dev_to_hdac_dev(_dev)   container_of(_dev, struct hdac_device, dev)
114 
115 int snd_hdac_device_init(struct hdac_device *dev, struct hdac_bus *bus,
116                          const char *name, unsigned int addr);
117 void snd_hdac_device_exit(struct hdac_device *dev);
118 int snd_hdac_device_register(struct hdac_device *codec);
119 void snd_hdac_device_unregister(struct hdac_device *codec);
120 
121 int snd_hdac_refresh_widgets(struct hdac_device *codec);
122 
123 unsigned int snd_hdac_make_cmd(struct hdac_device *codec, hda_nid_t nid,
124                                unsigned int verb, unsigned int parm);
125 int snd_hdac_exec_verb(struct hdac_device *codec, unsigned int cmd,
126                        unsigned int flags, unsigned int *res);
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                                          unsigned int 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 /**
150  * snd_hdac_read_parm - read a codec parameter
151  * @codec: the codec object
152  * @nid: NID to read a parameter
153  * @parm: parameter to read
154  *
155  * Returns -1 for error.  If you need to distinguish the error more
156  * strictly, use _snd_hdac_read_parm() directly.
157  */
158 static inline int snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid,
159                                      int parm)
160 {
161         unsigned int val;
162 
163         return _snd_hdac_read_parm(codec, nid, parm, &val) < 0 ? -1 : val;
164 }
165 
166 #ifdef CONFIG_PM
167 void snd_hdac_power_up(struct hdac_device *codec);
168 void snd_hdac_power_down(struct hdac_device *codec);
169 void snd_hdac_power_up_pm(struct hdac_device *codec);
170 void snd_hdac_power_down_pm(struct hdac_device *codec);
171 #else
172 static inline void snd_hdac_power_up(struct hdac_device *codec) {}
173 static inline void snd_hdac_power_down(struct hdac_device *codec) {}
174 static inline void snd_hdac_power_up_pm(struct hdac_device *codec) {}
175 static inline void snd_hdac_power_down_pm(struct hdac_device *codec) {}
176 #endif
177 
178 /*
179  * HD-audio codec base driver
180  */
181 struct hdac_driver {
182         struct device_driver driver;
183         int type;
184         const struct hda_device_id *id_table;
185         int (*match)(struct hdac_device *dev, struct hdac_driver *drv);
186         void (*unsol_event)(struct hdac_device *dev, unsigned int event);
187 };
188 
189 #define drv_to_hdac_driver(_drv) container_of(_drv, struct hdac_driver, driver)
190 
191 const struct hda_device_id *
192 hdac_get_device_id(struct hdac_device *hdev, struct hdac_driver *drv);
193 
194 /*
195  * Bus verb operators
196  */
197 struct hdac_bus_ops {
198         /* send a single command */
199         int (*command)(struct hdac_bus *bus, unsigned int cmd);
200         /* get a response from the last command */
201         int (*get_response)(struct hdac_bus *bus, unsigned int addr,
202                             unsigned int *res);
203         /* control the link power  */
204         int (*link_power)(struct hdac_bus *bus, bool enable);
205 };
206 
207 /*
208  * Lowlevel I/O operators
209  */
210 struct hdac_io_ops {
211         /* mapped register accesses */
212         void (*reg_writel)(u32 value, u32 __iomem *addr);
213         u32 (*reg_readl)(u32 __iomem *addr);
214         void (*reg_writew)(u16 value, u16 __iomem *addr);
215         u16 (*reg_readw)(u16 __iomem *addr);
216         void (*reg_writeb)(u8 value, u8 __iomem *addr);
217         u8 (*reg_readb)(u8 __iomem *addr);
218         /* Allocation ops */
219         int (*dma_alloc_pages)(struct hdac_bus *bus, int type, size_t size,
220                                struct snd_dma_buffer *buf);
221         void (*dma_free_pages)(struct hdac_bus *bus,
222                                struct snd_dma_buffer *buf);
223 };
224 
225 #define HDA_UNSOL_QUEUE_SIZE    64
226 #define HDA_MAX_CODECS          8       /* limit by controller side */
227 
228 /* HD Audio class code */
229 #define PCI_CLASS_MULTIMEDIA_HD_AUDIO   0x0403
230 
231 /*
232  * CORB/RIRB
233  *
234  * Each CORB entry is 4byte, RIRB is 8byte
235  */
236 struct hdac_rb {
237         __le32 *buf;            /* virtual address of CORB/RIRB buffer */
238         dma_addr_t addr;        /* physical address of CORB/RIRB buffer */
239         unsigned short rp, wp;  /* RIRB read/write pointers */
240         int cmds[HDA_MAX_CODECS];       /* number of pending requests */
241         u32 res[HDA_MAX_CODECS];        /* last read value */
242 };
243 
244 /*
245  * HD-audio bus base driver
246  */
247 struct hdac_bus {
248         struct device *dev;
249         const struct hdac_bus_ops *ops;
250         const struct hdac_io_ops *io_ops;
251 
252         /* h/w resources */
253         unsigned long addr;
254         void __iomem *remap_addr;
255         int irq;
256 
257         /* codec linked list */
258         struct list_head codec_list;
259         unsigned int num_codecs;
260 
261         /* link caddr -> codec */
262         struct hdac_device *caddr_tbl[HDA_MAX_CODEC_ADDRESS + 1];
263 
264         /* unsolicited event queue */
265         u32 unsol_queue[HDA_UNSOL_QUEUE_SIZE * 2]; /* ring buffer */
266         unsigned int unsol_rp, unsol_wp;
267         struct work_struct unsol_work;
268 
269         /* bit flags of detected codecs */
270         unsigned long codec_mask;
271 
272         /* bit flags of powered codecs */
273         unsigned long codec_powered;
274 
275         /* CORB/RIRB */
276         struct hdac_rb corb;
277         struct hdac_rb rirb;
278         unsigned int last_cmd[HDA_MAX_CODECS];  /* last sent command */
279 
280         /* CORB/RIRB and position buffers */
281         struct snd_dma_buffer rb;
282         struct snd_dma_buffer posbuf;
283 
284         /* hdac_stream linked list */
285         struct list_head stream_list;
286 
287         /* operation state */
288         bool chip_init:1;               /* h/w initialized */
289 
290         /* behavior flags */
291         bool sync_write:1;              /* sync after verb write */
292         bool use_posbuf:1;              /* use position buffer */
293         bool snoop:1;                   /* enable snooping */
294         bool align_bdle_4k:1;           /* BDLE align 4K boundary */
295         bool reverse_assign:1;          /* assign devices in reverse order */
296         bool corbrp_self_clear:1;       /* CORBRP clears itself after reset */
297 
298         int bdl_pos_adj;                /* BDL position adjustment */
299 
300         /* locks */
301         spinlock_t reg_lock;
302         struct mutex cmd_mutex;
303 
304         /* i915 component interface */
305         struct i915_audio_component *audio_component;
306         int i915_power_refcount;
307 };
308 
309 int snd_hdac_bus_init(struct hdac_bus *bus, struct device *dev,
310                       const struct hdac_bus_ops *ops,
311                       const struct hdac_io_ops *io_ops);
312 void snd_hdac_bus_exit(struct hdac_bus *bus);
313 int snd_hdac_bus_exec_verb(struct hdac_bus *bus, unsigned int addr,
314                            unsigned int cmd, unsigned int *res);
315 int snd_hdac_bus_exec_verb_unlocked(struct hdac_bus *bus, unsigned int addr,
316                                     unsigned int cmd, unsigned int *res);
317 void snd_hdac_bus_queue_event(struct hdac_bus *bus, u32 res, u32 res_ex);
318 
319 int snd_hdac_bus_add_device(struct hdac_bus *bus, struct hdac_device *codec);
320 void snd_hdac_bus_remove_device(struct hdac_bus *bus,
321                                 struct hdac_device *codec);
322 
323 static inline void snd_hdac_codec_link_up(struct hdac_device *codec)
324 {
325         set_bit(codec->addr, &codec->bus->codec_powered);
326 }
327 
328 static inline void snd_hdac_codec_link_down(struct hdac_device *codec)
329 {
330         clear_bit(codec->addr, &codec->bus->codec_powered);
331 }
332 
333 int snd_hdac_bus_send_cmd(struct hdac_bus *bus, unsigned int val);
334 int snd_hdac_bus_get_response(struct hdac_bus *bus, unsigned int addr,
335                               unsigned int *res);
336 int snd_hdac_link_power(struct hdac_device *codec, bool enable);
337 
338 bool snd_hdac_bus_init_chip(struct hdac_bus *bus, bool full_reset);
339 void snd_hdac_bus_stop_chip(struct hdac_bus *bus);
340 void snd_hdac_bus_init_cmd_io(struct hdac_bus *bus);
341 void snd_hdac_bus_stop_cmd_io(struct hdac_bus *bus);
342 void snd_hdac_bus_enter_link_reset(struct hdac_bus *bus);
343 void snd_hdac_bus_exit_link_reset(struct hdac_bus *bus);
344 
345 void snd_hdac_bus_update_rirb(struct hdac_bus *bus);
346 void snd_hdac_bus_handle_stream_irq(struct hdac_bus *bus, unsigned int status,
347                                     void (*ack)(struct hdac_bus *,
348                                                 struct hdac_stream *));
349 
350 int snd_hdac_bus_alloc_stream_pages(struct hdac_bus *bus);
351 void snd_hdac_bus_free_stream_pages(struct hdac_bus *bus);
352 
353 /*
354  * macros for easy use
355  */
356 #define _snd_hdac_chip_write(type, chip, reg, value) \
357         ((chip)->io_ops->reg_write ## type(value, (chip)->remap_addr + (reg)))
358 #define _snd_hdac_chip_read(type, chip, reg) \
359         ((chip)->io_ops->reg_read ## type((chip)->remap_addr + (reg)))
360 
361 /* read/write a register, pass without AZX_REG_ prefix */
362 #define snd_hdac_chip_writel(chip, reg, value) \
363         _snd_hdac_chip_write(l, chip, AZX_REG_ ## reg, value)
364 #define snd_hdac_chip_writew(chip, reg, value) \
365         _snd_hdac_chip_write(w, chip, AZX_REG_ ## reg, value)
366 #define snd_hdac_chip_writeb(chip, reg, value) \
367         _snd_hdac_chip_write(b, chip, AZX_REG_ ## reg, value)
368 #define snd_hdac_chip_readl(chip, reg) \
369         _snd_hdac_chip_read(l, chip, AZX_REG_ ## reg)
370 #define snd_hdac_chip_readw(chip, reg) \
371         _snd_hdac_chip_read(w, chip, AZX_REG_ ## reg)
372 #define snd_hdac_chip_readb(chip, reg) \
373         _snd_hdac_chip_read(b, chip, AZX_REG_ ## reg)
374 
375 /* update a register, pass without AZX_REG_ prefix */
376 #define snd_hdac_chip_updatel(chip, reg, mask, val) \
377         snd_hdac_chip_writel(chip, reg, \
378                              (snd_hdac_chip_readl(chip, reg) & ~(mask)) | (val))
379 #define snd_hdac_chip_updatew(chip, reg, mask, val) \
380         snd_hdac_chip_writew(chip, reg, \
381                              (snd_hdac_chip_readw(chip, reg) & ~(mask)) | (val))
382 #define snd_hdac_chip_updateb(chip, reg, mask, val) \
383         snd_hdac_chip_writeb(chip, reg, \
384                              (snd_hdac_chip_readb(chip, reg) & ~(mask)) | (val))
385 
386 /*
387  * HD-audio stream
388  */
389 struct hdac_stream {
390         struct hdac_bus *bus;
391         struct snd_dma_buffer bdl; /* BDL buffer */
392         __le32 *posbuf;         /* position buffer pointer */
393         int direction;          /* playback / capture (SNDRV_PCM_STREAM_*) */
394 
395         unsigned int bufsize;   /* size of the play buffer in bytes */
396         unsigned int period_bytes; /* size of the period in bytes */
397         unsigned int frags;     /* number for period in the play buffer */
398         unsigned int fifo_size; /* FIFO size */
399 
400         void __iomem *sd_addr;  /* stream descriptor pointer */
401 
402         u32 sd_int_sta_mask;    /* stream int status mask */
403 
404         /* pcm support */
405         struct snd_pcm_substream *substream;    /* assigned substream,
406                                                  * set in PCM open
407                                                  */
408         unsigned int format_val;        /* format value to be set in the
409                                          * controller and the codec
410                                          */
411         unsigned char stream_tag;       /* assigned stream */
412         unsigned char index;            /* stream index */
413         int assigned_key;               /* last device# key assigned to */
414 
415         bool opened:1;
416         bool running:1;
417         bool prepared:1;
418         bool no_period_wakeup:1;
419         bool locked:1;
420 
421         /* timestamp */
422         unsigned long start_wallclk;    /* start + minimum wallclk */
423         unsigned long period_wallclk;   /* wallclk for period */
424         struct timecounter  tc;
425         struct cyclecounter cc;
426         int delay_negative_threshold;
427 
428         struct list_head list;
429 #ifdef CONFIG_SND_HDA_DSP_LOADER
430         /* DSP access mutex */
431         struct mutex dsp_mutex;
432 #endif
433 };
434 
435 void snd_hdac_stream_init(struct hdac_bus *bus, struct hdac_stream *azx_dev,
436                           int idx, int direction, int tag);
437 struct hdac_stream *snd_hdac_stream_assign(struct hdac_bus *bus,
438                                            struct snd_pcm_substream *substream);
439 void snd_hdac_stream_release(struct hdac_stream *azx_dev);
440 
441 int snd_hdac_stream_setup(struct hdac_stream *azx_dev);
442 void snd_hdac_stream_cleanup(struct hdac_stream *azx_dev);
443 int snd_hdac_stream_setup_periods(struct hdac_stream *azx_dev);
444 int snd_hdac_stream_set_params(struct hdac_stream *azx_dev,
445                                 unsigned int format_val);
446 void snd_hdac_stream_start(struct hdac_stream *azx_dev, bool fresh_start);
447 void snd_hdac_stream_clear(struct hdac_stream *azx_dev);
448 void snd_hdac_stream_stop(struct hdac_stream *azx_dev);
449 void snd_hdac_stream_reset(struct hdac_stream *azx_dev);
450 void snd_hdac_stream_sync_trigger(struct hdac_stream *azx_dev, bool set,
451                                   unsigned int streams, unsigned int reg);
452 void snd_hdac_stream_sync(struct hdac_stream *azx_dev, bool start,
453                           unsigned int streams);
454 void snd_hdac_stream_timecounter_init(struct hdac_stream *azx_dev,
455                                       unsigned int streams);
456 /*
457  * macros for easy use
458  */
459 #define _snd_hdac_stream_write(type, dev, reg, value)                   \
460         ((dev)->bus->io_ops->reg_write ## type(value, (dev)->sd_addr + (reg)))
461 #define _snd_hdac_stream_read(type, dev, reg)                           \
462         ((dev)->bus->io_ops->reg_read ## type((dev)->sd_addr + (reg)))
463 
464 /* read/write a register, pass without AZX_REG_ prefix */
465 #define snd_hdac_stream_writel(dev, reg, value) \
466         _snd_hdac_stream_write(l, dev, AZX_REG_ ## reg, value)
467 #define snd_hdac_stream_writew(dev, reg, value) \
468         _snd_hdac_stream_write(w, dev, AZX_REG_ ## reg, value)
469 #define snd_hdac_stream_writeb(dev, reg, value) \
470         _snd_hdac_stream_write(b, dev, AZX_REG_ ## reg, value)
471 #define snd_hdac_stream_readl(dev, reg) \
472         _snd_hdac_stream_read(l, dev, AZX_REG_ ## reg)
473 #define snd_hdac_stream_readw(dev, reg) \
474         _snd_hdac_stream_read(w, dev, AZX_REG_ ## reg)
475 #define snd_hdac_stream_readb(dev, reg) \
476         _snd_hdac_stream_read(b, dev, AZX_REG_ ## reg)
477 
478 /* update a register, pass without AZX_REG_ prefix */
479 #define snd_hdac_stream_updatel(dev, reg, mask, val) \
480         snd_hdac_stream_writel(dev, reg, \
481                                (snd_hdac_stream_readl(dev, reg) & \
482                                 ~(mask)) | (val))
483 #define snd_hdac_stream_updatew(dev, reg, mask, val) \
484         snd_hdac_stream_writew(dev, reg, \
485                                (snd_hdac_stream_readw(dev, reg) & \
486                                 ~(mask)) | (val))
487 #define snd_hdac_stream_updateb(dev, reg, mask, val) \
488         snd_hdac_stream_writeb(dev, reg, \
489                                (snd_hdac_stream_readb(dev, reg) & \
490                                 ~(mask)) | (val))
491 
492 #ifdef CONFIG_SND_HDA_DSP_LOADER
493 /* DSP lock helpers */
494 #define snd_hdac_dsp_lock_init(dev)     mutex_init(&(dev)->dsp_mutex)
495 #define snd_hdac_dsp_lock(dev)          mutex_lock(&(dev)->dsp_mutex)
496 #define snd_hdac_dsp_unlock(dev)        mutex_unlock(&(dev)->dsp_mutex)
497 #define snd_hdac_stream_is_locked(dev)  ((dev)->locked)
498 /* DSP loader helpers */
499 int snd_hdac_dsp_prepare(struct hdac_stream *azx_dev, unsigned int format,
500                          unsigned int byte_size, struct snd_dma_buffer *bufp);
501 void snd_hdac_dsp_trigger(struct hdac_stream *azx_dev, bool start);
502 void snd_hdac_dsp_cleanup(struct hdac_stream *azx_dev,
503                           struct snd_dma_buffer *dmab);
504 #else /* CONFIG_SND_HDA_DSP_LOADER */
505 #define snd_hdac_dsp_lock_init(dev)     do {} while (0)
506 #define snd_hdac_dsp_lock(dev)          do {} while (0)
507 #define snd_hdac_dsp_unlock(dev)        do {} while (0)
508 #define snd_hdac_stream_is_locked(dev)  0
509 
510 static inline int
511 snd_hdac_dsp_prepare(struct hdac_stream *azx_dev, unsigned int format,
512                      unsigned int byte_size, struct snd_dma_buffer *bufp)
513 {
514         return 0;
515 }
516 
517 static inline void snd_hdac_dsp_trigger(struct hdac_stream *azx_dev, bool start)
518 {
519 }
520 
521 static inline void snd_hdac_dsp_cleanup(struct hdac_stream *azx_dev,
522                                         struct snd_dma_buffer *dmab)
523 {
524 }
525 #endif /* CONFIG_SND_HDA_DSP_LOADER */
526 
527 
528 /*
529  * generic array helpers
530  */
531 void *snd_array_new(struct snd_array *array);
532 void snd_array_free(struct snd_array *array);
533 static inline void snd_array_init(struct snd_array *array, unsigned int size,
534                                   unsigned int align)
535 {
536         array->elem_size = size;
537         array->alloc_align = align;
538 }
539 
540 static inline void *snd_array_elem(struct snd_array *array, unsigned int idx)
541 {
542         return array->list + idx * array->elem_size;
543 }
544 
545 static inline unsigned int snd_array_index(struct snd_array *array, void *ptr)
546 {
547         return (unsigned long)(ptr - array->list) / array->elem_size;
548 }
549 
550 #endif /* __SOUND_HDAUDIO_H */
551 

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