diff options
Diffstat (limited to 'include/sound/pcm.h')
| -rw-r--r-- | include/sound/pcm.h | 522 |
1 files changed, 331 insertions, 191 deletions
diff --git a/include/sound/pcm.h b/include/sound/pcm.h index 314268a1104..d854fb31c00 100644 --- a/include/sound/pcm.h +++ b/include/sound/pcm.h @@ -3,7 +3,7 @@ /* * Digital Audio (PCM) abstract layer - * Copyright (c) by Jaroslav Kysela <perex@suse.cz> + * Copyright (c) by Jaroslav Kysela <perex@perex.cz> * Abramo Bagnara <abramo@alsa-project.org> * * @@ -25,14 +25,17 @@ #include <sound/asound.h> #include <sound/memalloc.h> +#include <sound/minors.h> #include <linux/poll.h> +#include <linux/mm.h> #include <linux/bitops.h> +#include <linux/pm_qos.h> #define snd_pcm_substream_chip(substream) ((substream)->private_data) #define snd_pcm_chip(pcm) ((pcm)->private_data) #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) -#include "pcm_oss.h" +#include <sound/pcm_oss.h> #endif /* @@ -55,6 +58,8 @@ struct snd_pcm_hardware { size_t fifo_size; /* fifo size in bytes */ }; +struct snd_pcm_substream; + struct snd_pcm_ops { int (*open)(struct snd_pcm_substream *substream); int (*close)(struct snd_pcm_substream *substream); @@ -66,6 +71,8 @@ struct snd_pcm_ops { int (*prepare)(struct snd_pcm_substream *substream); int (*trigger)(struct snd_pcm_substream *substream, int cmd); snd_pcm_uframes_t (*pointer)(struct snd_pcm_substream *substream); + int (*wall_clock)(struct snd_pcm_substream *substream, + struct timespec *audio_ts); int (*copy)(struct snd_pcm_substream *substream, int channel, snd_pcm_uframes_t pos, void __user *buf, snd_pcm_uframes_t count); @@ -81,7 +88,11 @@ struct snd_pcm_ops { * */ -#define SNDRV_PCM_DEVICES 8 +#if defined(CONFIG_SND_DYNAMIC_MINORS) +#define SNDRV_PCM_DEVICES (SNDRV_OS_MINORS-2) +#else +#define SNDRV_PCM_DEVICES 8 +#endif #define SNDRV_PCM_IOCTL1_FALSE ((void *)0) #define SNDRV_PCM_IOCTL1_TRUE ((void *)1) @@ -90,6 +101,7 @@ struct snd_pcm_ops { #define SNDRV_PCM_IOCTL1_INFO 1 #define SNDRV_PCM_IOCTL1_CHANNEL_INFO 2 #define SNDRV_PCM_IOCTL1_GSTATE 3 +#define SNDRV_PCM_IOCTL1_FIFO_SIZE 4 #define SNDRV_PCM_TRIGGER_STOP 0 #define SNDRV_PCM_TRIGGER_START 1 @@ -126,44 +138,51 @@ struct snd_pcm_ops { SNDRV_PCM_RATE_88200|SNDRV_PCM_RATE_96000) #define SNDRV_PCM_RATE_8000_192000 (SNDRV_PCM_RATE_8000_96000|SNDRV_PCM_RATE_176400|\ SNDRV_PCM_RATE_192000) -#define SNDRV_PCM_FMTBIT_S8 (1ULL << SNDRV_PCM_FORMAT_S8) -#define SNDRV_PCM_FMTBIT_U8 (1ULL << SNDRV_PCM_FORMAT_U8) -#define SNDRV_PCM_FMTBIT_S16_LE (1ULL << SNDRV_PCM_FORMAT_S16_LE) -#define SNDRV_PCM_FMTBIT_S16_BE (1ULL << SNDRV_PCM_FORMAT_S16_BE) -#define SNDRV_PCM_FMTBIT_U16_LE (1ULL << SNDRV_PCM_FORMAT_U16_LE) -#define SNDRV_PCM_FMTBIT_U16_BE (1ULL << SNDRV_PCM_FORMAT_U16_BE) -#define SNDRV_PCM_FMTBIT_S24_LE (1ULL << SNDRV_PCM_FORMAT_S24_LE) -#define SNDRV_PCM_FMTBIT_S24_BE (1ULL << SNDRV_PCM_FORMAT_S24_BE) -#define SNDRV_PCM_FMTBIT_U24_LE (1ULL << SNDRV_PCM_FORMAT_U24_LE) -#define SNDRV_PCM_FMTBIT_U24_BE (1ULL << SNDRV_PCM_FORMAT_U24_BE) -#define SNDRV_PCM_FMTBIT_S32_LE (1ULL << SNDRV_PCM_FORMAT_S32_LE) -#define SNDRV_PCM_FMTBIT_S32_BE (1ULL << SNDRV_PCM_FORMAT_S32_BE) -#define SNDRV_PCM_FMTBIT_U32_LE (1ULL << SNDRV_PCM_FORMAT_U32_LE) -#define SNDRV_PCM_FMTBIT_U32_BE (1ULL << SNDRV_PCM_FORMAT_U32_BE) -#define SNDRV_PCM_FMTBIT_FLOAT_LE (1ULL << SNDRV_PCM_FORMAT_FLOAT_LE) -#define SNDRV_PCM_FMTBIT_FLOAT_BE (1ULL << SNDRV_PCM_FORMAT_FLOAT_BE) -#define SNDRV_PCM_FMTBIT_FLOAT64_LE (1ULL << SNDRV_PCM_FORMAT_FLOAT64_LE) -#define SNDRV_PCM_FMTBIT_FLOAT64_BE (1ULL << SNDRV_PCM_FORMAT_FLOAT64_BE) -#define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE (1ULL << SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE) -#define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE (1ULL << SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE) -#define SNDRV_PCM_FMTBIT_MU_LAW (1ULL << SNDRV_PCM_FORMAT_MU_LAW) -#define SNDRV_PCM_FMTBIT_A_LAW (1ULL << SNDRV_PCM_FORMAT_A_LAW) -#define SNDRV_PCM_FMTBIT_IMA_ADPCM (1ULL << SNDRV_PCM_FORMAT_IMA_ADPCM) -#define SNDRV_PCM_FMTBIT_MPEG (1ULL << SNDRV_PCM_FORMAT_MPEG) -#define SNDRV_PCM_FMTBIT_GSM (1ULL << SNDRV_PCM_FORMAT_GSM) -#define SNDRV_PCM_FMTBIT_SPECIAL (1ULL << SNDRV_PCM_FORMAT_SPECIAL) -#define SNDRV_PCM_FMTBIT_S24_3LE (1ULL << SNDRV_PCM_FORMAT_S24_3LE) -#define SNDRV_PCM_FMTBIT_U24_3LE (1ULL << SNDRV_PCM_FORMAT_U24_3LE) -#define SNDRV_PCM_FMTBIT_S24_3BE (1ULL << SNDRV_PCM_FORMAT_S24_3BE) -#define SNDRV_PCM_FMTBIT_U24_3BE (1ULL << SNDRV_PCM_FORMAT_U24_3BE) -#define SNDRV_PCM_FMTBIT_S20_3LE (1ULL << SNDRV_PCM_FORMAT_S20_3LE) -#define SNDRV_PCM_FMTBIT_U20_3LE (1ULL << SNDRV_PCM_FORMAT_U20_3LE) -#define SNDRV_PCM_FMTBIT_S20_3BE (1ULL << SNDRV_PCM_FORMAT_S20_3BE) -#define SNDRV_PCM_FMTBIT_U20_3BE (1ULL << SNDRV_PCM_FORMAT_U20_3BE) -#define SNDRV_PCM_FMTBIT_S18_3LE (1ULL << SNDRV_PCM_FORMAT_S18_3LE) -#define SNDRV_PCM_FMTBIT_U18_3LE (1ULL << SNDRV_PCM_FORMAT_U18_3LE) -#define SNDRV_PCM_FMTBIT_S18_3BE (1ULL << SNDRV_PCM_FORMAT_S18_3BE) -#define SNDRV_PCM_FMTBIT_U18_3BE (1ULL << SNDRV_PCM_FORMAT_U18_3BE) +#define _SNDRV_PCM_FMTBIT(fmt) (1ULL << (__force int)SNDRV_PCM_FORMAT_##fmt) +#define SNDRV_PCM_FMTBIT_S8 _SNDRV_PCM_FMTBIT(S8) +#define SNDRV_PCM_FMTBIT_U8 _SNDRV_PCM_FMTBIT(U8) +#define SNDRV_PCM_FMTBIT_S16_LE _SNDRV_PCM_FMTBIT(S16_LE) +#define SNDRV_PCM_FMTBIT_S16_BE _SNDRV_PCM_FMTBIT(S16_BE) +#define SNDRV_PCM_FMTBIT_U16_LE _SNDRV_PCM_FMTBIT(U16_LE) +#define SNDRV_PCM_FMTBIT_U16_BE _SNDRV_PCM_FMTBIT(U16_BE) +#define SNDRV_PCM_FMTBIT_S24_LE _SNDRV_PCM_FMTBIT(S24_LE) +#define SNDRV_PCM_FMTBIT_S24_BE _SNDRV_PCM_FMTBIT(S24_BE) +#define SNDRV_PCM_FMTBIT_U24_LE _SNDRV_PCM_FMTBIT(U24_LE) +#define SNDRV_PCM_FMTBIT_U24_BE _SNDRV_PCM_FMTBIT(U24_BE) +#define SNDRV_PCM_FMTBIT_S32_LE _SNDRV_PCM_FMTBIT(S32_LE) +#define SNDRV_PCM_FMTBIT_S32_BE _SNDRV_PCM_FMTBIT(S32_BE) +#define SNDRV_PCM_FMTBIT_U32_LE _SNDRV_PCM_FMTBIT(U32_LE) +#define SNDRV_PCM_FMTBIT_U32_BE _SNDRV_PCM_FMTBIT(U32_BE) +#define SNDRV_PCM_FMTBIT_FLOAT_LE _SNDRV_PCM_FMTBIT(FLOAT_LE) +#define SNDRV_PCM_FMTBIT_FLOAT_BE _SNDRV_PCM_FMTBIT(FLOAT_BE) +#define SNDRV_PCM_FMTBIT_FLOAT64_LE _SNDRV_PCM_FMTBIT(FLOAT64_LE) +#define SNDRV_PCM_FMTBIT_FLOAT64_BE _SNDRV_PCM_FMTBIT(FLOAT64_BE) +#define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE _SNDRV_PCM_FMTBIT(IEC958_SUBFRAME_LE) +#define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE _SNDRV_PCM_FMTBIT(IEC958_SUBFRAME_BE) +#define SNDRV_PCM_FMTBIT_MU_LAW _SNDRV_PCM_FMTBIT(MU_LAW) +#define SNDRV_PCM_FMTBIT_A_LAW _SNDRV_PCM_FMTBIT(A_LAW) +#define SNDRV_PCM_FMTBIT_IMA_ADPCM _SNDRV_PCM_FMTBIT(IMA_ADPCM) +#define SNDRV_PCM_FMTBIT_MPEG _SNDRV_PCM_FMTBIT(MPEG) +#define SNDRV_PCM_FMTBIT_GSM _SNDRV_PCM_FMTBIT(GSM) +#define SNDRV_PCM_FMTBIT_SPECIAL _SNDRV_PCM_FMTBIT(SPECIAL) +#define SNDRV_PCM_FMTBIT_S24_3LE _SNDRV_PCM_FMTBIT(S24_3LE) +#define SNDRV_PCM_FMTBIT_U24_3LE _SNDRV_PCM_FMTBIT(U24_3LE) +#define SNDRV_PCM_FMTBIT_S24_3BE _SNDRV_PCM_FMTBIT(S24_3BE) +#define SNDRV_PCM_FMTBIT_U24_3BE _SNDRV_PCM_FMTBIT(U24_3BE) +#define SNDRV_PCM_FMTBIT_S20_3LE _SNDRV_PCM_FMTBIT(S20_3LE) +#define SNDRV_PCM_FMTBIT_U20_3LE _SNDRV_PCM_FMTBIT(U20_3LE) +#define SNDRV_PCM_FMTBIT_S20_3BE _SNDRV_PCM_FMTBIT(S20_3BE) +#define SNDRV_PCM_FMTBIT_U20_3BE _SNDRV_PCM_FMTBIT(U20_3BE) +#define SNDRV_PCM_FMTBIT_S18_3LE _SNDRV_PCM_FMTBIT(S18_3LE) +#define SNDRV_PCM_FMTBIT_U18_3LE _SNDRV_PCM_FMTBIT(U18_3LE) +#define SNDRV_PCM_FMTBIT_S18_3BE _SNDRV_PCM_FMTBIT(S18_3BE) +#define SNDRV_PCM_FMTBIT_U18_3BE _SNDRV_PCM_FMTBIT(U18_3BE) +#define SNDRV_PCM_FMTBIT_G723_24 _SNDRV_PCM_FMTBIT(G723_24) +#define SNDRV_PCM_FMTBIT_G723_24_1B _SNDRV_PCM_FMTBIT(G723_24_1B) +#define SNDRV_PCM_FMTBIT_G723_40 _SNDRV_PCM_FMTBIT(G723_40) +#define SNDRV_PCM_FMTBIT_G723_40_1B _SNDRV_PCM_FMTBIT(G723_40_1B) +#define SNDRV_PCM_FMTBIT_DSD_U8 _SNDRV_PCM_FMTBIT(DSD_U8) +#define SNDRV_PCM_FMTBIT_DSD_U16_LE _SNDRV_PCM_FMTBIT(DSD_U16_LE) #ifdef SNDRV_LITTLE_ENDIAN #define SNDRV_PCM_FMTBIT_S16 SNDRV_PCM_FMTBIT_S16_LE @@ -190,7 +209,7 @@ struct snd_pcm_ops { struct snd_pcm_file { struct snd_pcm_substream *substream; - struct snd_pcm_file *next; + int no_compat_mmap; }; struct snd_pcm_hw_rule; @@ -249,10 +268,12 @@ struct snd_pcm_hw_constraint_ratdens { struct snd_pcm_hw_constraint_list { unsigned int count; - unsigned int *list; + const unsigned int *list; unsigned int mask; }; +struct snd_pcm_hwptr_log; + struct snd_pcm_runtime { /* -- Status -- */ struct snd_pcm_substream *trigger_master; @@ -260,7 +281,11 @@ struct snd_pcm_runtime { int overrange; snd_pcm_uframes_t avail_max; snd_pcm_uframes_t hw_ptr_base; /* Position at buffer restart */ - snd_pcm_uframes_t hw_ptr_interrupt; /* Position at interrupt time*/ + snd_pcm_uframes_t hw_ptr_interrupt; /* Position at interrupt time */ + unsigned long hw_ptr_jiffies; /* Time when hw_ptr is updated */ + unsigned long hw_ptr_buffer_jiffies; /* buffer time in jiffies */ + snd_pcm_sframes_t delay; /* extra delay; typically FIFO size */ + u64 hw_ptr_wrap; /* offset for hw_ptr due to boundary wrap-around */ /* -- HW params -- */ snd_pcm_access_t access; /* access mode */ @@ -271,7 +296,6 @@ struct snd_pcm_runtime { snd_pcm_uframes_t period_size; /* period size */ unsigned int periods; /* periods */ snd_pcm_uframes_t buffer_size; /* buffer size */ - unsigned int tick_time; /* tick time */ snd_pcm_uframes_t min_align; /* Min alignment for the format */ size_t byte_align; unsigned int frame_bits; @@ -279,12 +303,11 @@ struct snd_pcm_runtime { unsigned int info; unsigned int rate_num; unsigned int rate_den; + unsigned int no_period_wakeup: 1; /* -- SW params -- */ int tstamp_mode; /* mmap timestamp is updated */ unsigned int period_step; - unsigned int sleep_min; /* min ticks to sleep */ - snd_pcm_uframes_t xfer_align; /* xfer size need to be a multiple */ snd_pcm_uframes_t start_threshold; snd_pcm_uframes_t stop_threshold; snd_pcm_uframes_t silence_threshold; /* Silence filling happens when @@ -298,13 +321,13 @@ struct snd_pcm_runtime { union snd_pcm_sync_id sync; /* hardware synchronization ID */ /* -- mmap -- */ - volatile struct snd_pcm_mmap_status *status; - volatile struct snd_pcm_mmap_control *control; - atomic_t mmap_count; + struct snd_pcm_mmap_status *status; + struct snd_pcm_mmap_control *control; /* -- locking / scheduling -- */ - wait_queue_head_t sleep; - struct timer_list tick_timer; + snd_pcm_uframes_t twake; /* do transfer (!poll) wakeup if non-zero */ + wait_queue_head_t sleep; /* poll sleep */ + wait_queue_head_t tsleep; /* transfer sleep */ struct fasync_struct *fasync; /* -- private section -- */ @@ -321,6 +344,7 @@ struct snd_pcm_runtime { /* -- timer -- */ unsigned int timer_resolution; /* timer resolution */ + int tstamp_type; /* timestamp type */ /* -- DMA -- */ unsigned char *dma_area; /* DMA area */ @@ -333,6 +357,10 @@ struct snd_pcm_runtime { /* -- OSS things -- */ struct snd_pcm_oss_runtime oss; #endif + +#ifdef CONFIG_SND_PCM_XRUN_DEBUG + struct snd_pcm_hwptr_log *hwptr_log; +#endif }; struct snd_pcm_group { /* keep linked substreams */ @@ -341,6 +369,8 @@ struct snd_pcm_group { /* keep linked substreams */ int count; }; +struct pid; + struct snd_pcm_substream { struct snd_pcm *pcm; struct snd_pcm_str *pstr; @@ -348,18 +378,17 @@ struct snd_pcm_substream { int number; char name[32]; /* substream name */ int stream; /* stream (direction) */ + struct pm_qos_request latency_pm_qos_req; /* pm_qos request */ size_t buffer_bytes_max; /* limit ring buffer size */ struct snd_dma_buffer dma_buffer; - unsigned int dma_buf_id; size_t dma_max; /* -- hardware operations -- */ - struct snd_pcm_ops *ops; + const struct snd_pcm_ops *ops; /* -- runtime information -- */ struct snd_pcm_runtime *runtime; /* -- timer section -- */ struct snd_timer *timer; /* timer */ unsigned timer_running: 1; /* time is running */ - spinlock_t timer_lock; /* -- next substream -- */ struct snd_pcm_substream *next; /* -- linked substreams -- */ @@ -367,27 +396,30 @@ struct snd_pcm_substream { struct snd_pcm_group self_group; /* fake group for non linked substream (with substream lock inside) */ struct snd_pcm_group *group; /* pointer to current group */ /* -- assigned files -- */ - struct snd_pcm_file *file; - struct file *ffile; + void *file; + int ref_count; + atomic_t mmap_count; + unsigned int f_flags; + void (*pcm_release)(struct snd_pcm_substream *); + struct pid *pid; #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) /* -- OSS things -- */ struct snd_pcm_oss_substream oss; #endif +#ifdef CONFIG_SND_VERBOSE_PROCFS struct snd_info_entry *proc_root; struct snd_info_entry *proc_info_entry; struct snd_info_entry *proc_hw_params_entry; struct snd_info_entry *proc_sw_params_entry; struct snd_info_entry *proc_status_entry; struct snd_info_entry *proc_prealloc_entry; + struct snd_info_entry *proc_prealloc_max_entry; +#endif /* misc flags */ - unsigned int no_mmap_ctrl: 1; + unsigned int hw_opened: 1; }; -#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) -#define SUBSTREAM_BUSY(substream) ((substream)->file != NULL || ((substream)->oss.file != NULL)) -#else -#define SUBSTREAM_BUSY(substream) ((substream)->file != NULL) -#endif +#define SUBSTREAM_BUSY(substream) ((substream)->ref_count > 0) struct snd_pcm_str { @@ -401,29 +433,33 @@ struct snd_pcm_str { /* -- OSS things -- */ struct snd_pcm_oss_stream oss; #endif - struct snd_pcm_file *files; +#ifdef CONFIG_SND_VERBOSE_PROCFS struct snd_info_entry *proc_root; struct snd_info_entry *proc_info_entry; -#ifdef CONFIG_SND_DEBUG +#ifdef CONFIG_SND_PCM_XRUN_DEBUG unsigned int xrun_debug; /* 0 = disabled, 1 = verbose, 2 = stacktrace */ struct snd_info_entry *proc_xrun_debug_entry; #endif +#endif + struct snd_kcontrol *chmap_kctl; /* channel-mapping controls */ }; struct snd_pcm { struct snd_card *card; struct list_head list; - unsigned int device; /* device number */ + int device; /* device number */ unsigned int info_flags; unsigned short dev_class; unsigned short dev_subclass; char id[64]; char name[80]; struct snd_pcm_str streams[2]; - struct semaphore open_mutex; + struct mutex open_mutex; wait_queue_head_t open_wait; void *private_data; void (*private_free) (struct snd_pcm *pcm); + struct device *dev; /* actual hw device this belongs to */ + bool internal; /* pcm is for internal use only */ #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) struct snd_pcm_oss oss; #endif @@ -440,9 +476,12 @@ struct snd_pcm_notify { * Registering */ -extern struct file_operations snd_pcm_f_ops[2]; +extern const struct file_operations snd_pcm_f_ops[2]; -int snd_pcm_new(struct snd_card *card, char *id, int device, +int snd_pcm_new(struct snd_card *card, const char *id, int device, + int playback_count, int capture_count, + struct snd_pcm **rpcm); +int snd_pcm_new_internal(struct snd_card *card, const char *id, int device, int playback_count, int capture_count, struct snd_pcm **rpcm); int snd_pcm_new_stream(struct snd_pcm *pcm, int stream, int substream_count); @@ -460,93 +499,32 @@ int snd_pcm_info_user(struct snd_pcm_substream *substream, struct snd_pcm_info __user *info); int snd_pcm_status(struct snd_pcm_substream *substream, struct snd_pcm_status *status); -int snd_pcm_prepare(struct snd_pcm_substream *substream); int snd_pcm_start(struct snd_pcm_substream *substream); -int snd_pcm_stop(struct snd_pcm_substream *substream, int status); +int snd_pcm_stop(struct snd_pcm_substream *substream, snd_pcm_state_t status); int snd_pcm_drain_done(struct snd_pcm_substream *substream); #ifdef CONFIG_PM int snd_pcm_suspend(struct snd_pcm_substream *substream); int snd_pcm_suspend_all(struct snd_pcm *pcm); #endif -int snd_pcm_kernel_playback_ioctl(struct snd_pcm_substream *substream, unsigned int cmd, void *arg); -int snd_pcm_kernel_capture_ioctl(struct snd_pcm_substream *substream, unsigned int cmd, void *arg); int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream, unsigned int cmd, void *arg); -int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, struct snd_pcm_substream **rsubstream); +int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, struct file *file, + struct snd_pcm_substream **rsubstream); void snd_pcm_release_substream(struct snd_pcm_substream *substream); +int snd_pcm_attach_substream(struct snd_pcm *pcm, int stream, struct file *file, + struct snd_pcm_substream **rsubstream); +void snd_pcm_detach_substream(struct snd_pcm_substream *substream); void snd_pcm_vma_notify_data(void *client, void *data); int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file, struct vm_area_struct *area); -#if BITS_PER_LONG >= 64 - -static inline void div64_32(u_int64_t *n, u_int32_t div, u_int32_t *rem) -{ - *rem = *n % div; - *n /= div; -} - -#elif defined(i386) -static inline void div64_32(u_int64_t *n, u_int32_t div, u_int32_t *rem) -{ - u_int32_t low, high; - low = *n & 0xffffffff; - high = *n >> 32; - if (high) { - u_int32_t high1 = high % div; - high /= div; - asm("divl %2":"=a" (low), "=d" (*rem):"rm" (div), "a" (low), "d" (high1)); - *n = (u_int64_t)high << 32 | low; - } else { - *n = low / div; - *rem = low % div; - } -} +#ifdef CONFIG_SND_DEBUG +void snd_pcm_debug_name(struct snd_pcm_substream *substream, + char *name, size_t len); #else - -static inline void divl(u_int32_t high, u_int32_t low, - u_int32_t div, - u_int32_t *q, u_int32_t *r) -{ - u_int64_t n = (u_int64_t)high << 32 | low; - u_int64_t d = (u_int64_t)div << 31; - u_int32_t q1 = 0; - int c = 32; - while (n > 0xffffffffU) { - q1 <<= 1; - if (n >= d) { - n -= d; - q1 |= 1; - } - d >>= 1; - c--; - } - q1 <<= c; - if (n) { - low = n; - *q = q1 | (low / div); - *r = low % div; - } else { - *r = 0; - *q = q1; - } - return; -} - -static inline void div64_32(u_int64_t *n, u_int32_t div, u_int32_t *rem) +static inline void +snd_pcm_debug_name(struct snd_pcm_substream *substream, char *buf, size_t size) { - u_int32_t low, high; - low = *n & 0xffffffff; - high = *n >> 32; - if (high) { - u_int32_t high1 = high % div; - u_int32_t low1 = low; - high /= div; - divl(high1, low1, div, &low, rem); - *n = (u_int64_t)high << 32 | low; - } else { - *n = low / div; - *rem = low % div; - } + *buf = 0; } #endif @@ -595,11 +573,8 @@ do { \ read_unlock_irqrestore(&snd_pcm_link_rwlock, (flags)); \ } while (0) -#define snd_pcm_group_for_each(pos, substream) \ - list_for_each(pos, &substream->group->substreams) - -#define snd_pcm_group_substream_entry(pos) \ - list_entry(pos, struct snd_pcm_substream, link_list) +#define snd_pcm_group_for_each_entry(s, substream) \ + list_for_each_entry(s, &substream->group->substreams, link_list) static inline int snd_pcm_running(struct snd_pcm_substream *substream) { @@ -685,7 +660,7 @@ static inline snd_pcm_sframes_t snd_pcm_capture_hw_avail(struct snd_pcm_runtime * * Checks whether enough free space is available on the playback buffer. * - * Returns non-zero if available, or zero if not. + * Return: Non-zero if available, or zero if not. */ static inline int snd_pcm_playback_ready(struct snd_pcm_substream *substream) { @@ -699,7 +674,7 @@ static inline int snd_pcm_playback_ready(struct snd_pcm_substream *substream) * * Checks whether enough capture data is available on the capture buffer. * - * Returns non-zero if available, or zero if not. + * Return: Non-zero if available, or zero if not. */ static inline int snd_pcm_capture_ready(struct snd_pcm_substream *substream) { @@ -711,10 +686,10 @@ static inline int snd_pcm_capture_ready(struct snd_pcm_substream *substream) * snd_pcm_playback_data - check whether any data exists on the playback buffer * @substream: the pcm substream instance * - * Checks whether any data exists on the playback buffer. If stop_threshold - * is bigger or equal to boundary, then this function returns always non-zero. + * Checks whether any data exists on the playback buffer. * - * Returns non-zero if exists, or zero if not. + * Return: Non-zero if any data exists, or zero if not. If stop_threshold + * is bigger or equal to boundary, then this function returns always non-zero. */ static inline int snd_pcm_playback_data(struct snd_pcm_substream *substream) { @@ -731,7 +706,7 @@ static inline int snd_pcm_playback_data(struct snd_pcm_substream *substream) * * Checks whether the playback buffer is empty. * - * Returns non-zero if empty, or zero if not. + * Return: Non-zero if empty, or zero if not. */ static inline int snd_pcm_playback_empty(struct snd_pcm_substream *substream) { @@ -745,7 +720,7 @@ static inline int snd_pcm_playback_empty(struct snd_pcm_substream *substream) * * Checks whether the capture buffer is empty. * - * Returns non-zero if empty, or zero if not. + * Return: Non-zero if empty, or zero if not. */ static inline int snd_pcm_capture_empty(struct snd_pcm_substream *substream) { @@ -786,27 +761,27 @@ static inline struct snd_interval *hw_param_interval(struct snd_pcm_hw_params *p static inline const struct snd_mask *hw_param_mask_c(const struct snd_pcm_hw_params *params, snd_pcm_hw_param_t var) { - return (const struct snd_mask *)hw_param_mask((struct snd_pcm_hw_params*) params, var); + return ¶ms->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK]; } static inline const struct snd_interval *hw_param_interval_c(const struct snd_pcm_hw_params *params, snd_pcm_hw_param_t var) { - return (const struct snd_interval *)hw_param_interval((struct snd_pcm_hw_params*) params, var); + return ¶ms->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL]; } -#define params_access(p) snd_mask_min(hw_param_mask((p), SNDRV_PCM_HW_PARAM_ACCESS)) -#define params_format(p) snd_mask_min(hw_param_mask((p), SNDRV_PCM_HW_PARAM_FORMAT)) -#define params_subformat(p) snd_mask_min(hw_param_mask((p), SNDRV_PCM_HW_PARAM_SUBFORMAT)) -#define params_channels(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_CHANNELS)->min -#define params_rate(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_RATE)->min -#define params_period_size(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_PERIOD_SIZE)->min -#define params_period_bytes(p) ((params_period_size(p)*snd_pcm_format_physical_width(params_format(p))*params_channels(p))/8) -#define params_periods(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_PERIODS)->min -#define params_buffer_size(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_BUFFER_SIZE)->min -#define params_buffer_bytes(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_BUFFER_BYTES)->min -#define params_tick_time(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_TICK_TIME)->min - +#define params_channels(p) \ + (hw_param_interval_c((p), SNDRV_PCM_HW_PARAM_CHANNELS)->min) +#define params_rate(p) \ + (hw_param_interval_c((p), SNDRV_PCM_HW_PARAM_RATE)->min) +#define params_period_size(p) \ + (hw_param_interval_c((p), SNDRV_PCM_HW_PARAM_PERIOD_SIZE)->min) +#define params_periods(p) \ + (hw_param_interval_c((p), SNDRV_PCM_HW_PARAM_PERIODS)->min) +#define params_buffer_size(p) \ + (hw_param_interval_c((p), SNDRV_PCM_HW_PARAM_BUFFER_SIZE)->min) +#define params_buffer_bytes(p) \ + (hw_param_interval_c((p), SNDRV_PCM_HW_PARAM_BUFFER_BYTES)->min) int snd_interval_refine(struct snd_interval *i, const struct snd_interval *v); void snd_interval_mul(const struct snd_interval *a, const struct snd_interval *b, struct snd_interval *c); @@ -815,21 +790,14 @@ void snd_interval_muldivk(const struct snd_interval *a, const struct snd_interva unsigned int k, struct snd_interval *c); void snd_interval_mulkdiv(const struct snd_interval *a, unsigned int k, const struct snd_interval *b, struct snd_interval *c); -int snd_interval_list(struct snd_interval *i, unsigned int count, unsigned int *list, unsigned int mask); +int snd_interval_list(struct snd_interval *i, unsigned int count, + const unsigned int *list, unsigned int mask); int snd_interval_ratnum(struct snd_interval *i, unsigned int rats_count, struct snd_ratnum *rats, unsigned int *nump, unsigned int *denp); void _snd_pcm_hw_params_any(struct snd_pcm_hw_params *params); void _snd_pcm_hw_param_setempty(struct snd_pcm_hw_params *params, snd_pcm_hw_param_t var); -int snd_pcm_hw_param_near(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *params, - snd_pcm_hw_param_t var, - unsigned int val, int *dir); -int snd_pcm_hw_param_set(struct snd_pcm_substream *pcm, - struct snd_pcm_hw_params *params, - snd_pcm_hw_param_t var, - unsigned int val, int dir); int snd_pcm_hw_params_choose(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params); int snd_pcm_hw_refine(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params); @@ -847,7 +815,7 @@ int snd_pcm_hw_constraint_integer(struct snd_pcm_runtime *runtime, snd_pcm_hw_pa int snd_pcm_hw_constraint_list(struct snd_pcm_runtime *runtime, unsigned int cond, snd_pcm_hw_param_t var, - struct snd_pcm_hw_constraint_list *l); + const struct snd_pcm_hw_constraint_list *l); int snd_pcm_hw_constraint_ratnums(struct snd_pcm_runtime *runtime, unsigned int cond, snd_pcm_hw_param_t var, @@ -867,6 +835,8 @@ int snd_pcm_hw_constraint_step(struct snd_pcm_runtime *runtime, int snd_pcm_hw_constraint_pow2(struct snd_pcm_runtime *runtime, unsigned int cond, snd_pcm_hw_param_t var); +int snd_pcm_hw_rule_noresample(struct snd_pcm_runtime *runtime, + unsigned int base_rate); int snd_pcm_hw_rule_add(struct snd_pcm_runtime *runtime, unsigned int cond, int var, @@ -883,7 +853,7 @@ int snd_pcm_format_big_endian(snd_pcm_format_t format); * snd_pcm_format_cpu_endian - Check the PCM format is CPU-endian * @format: the format to check * - * Returns 1 if the given PCM format is CPU-endian, 0 if + * Return: 1 if the given PCM format is CPU-endian, 0 if * opposite, or a negative error code if endian not specified. */ int snd_pcm_format_cpu_endian(snd_pcm_format_t format); @@ -898,23 +868,22 @@ int snd_pcm_format_physical_width(snd_pcm_format_t format); /* in bits */ ssize_t snd_pcm_format_size(snd_pcm_format_t format, size_t samples); const unsigned char *snd_pcm_format_silence_64(snd_pcm_format_t format); int snd_pcm_format_set_silence(snd_pcm_format_t format, void *buf, unsigned int frames); -snd_pcm_format_t snd_pcm_build_linear_format(int width, int unsignd, int big_endian); -const char *snd_pcm_format_name(snd_pcm_format_t format); +snd_pcm_format_t snd_pcm_build_linear_format(int width, int unsigned, int big_endian); -void snd_pcm_set_ops(struct snd_pcm * pcm, int direction, struct snd_pcm_ops *ops); +void snd_pcm_set_ops(struct snd_pcm * pcm, int direction, + const struct snd_pcm_ops *ops); void snd_pcm_set_sync(struct snd_pcm_substream *substream); int snd_pcm_lib_interleave_len(struct snd_pcm_substream *substream); int snd_pcm_lib_ioctl(struct snd_pcm_substream *substream, unsigned int cmd, void *arg); +int snd_pcm_update_state(struct snd_pcm_substream *substream, + struct snd_pcm_runtime *runtime); int snd_pcm_update_hw_ptr(struct snd_pcm_substream *substream); int snd_pcm_playback_xrun_check(struct snd_pcm_substream *substream); int snd_pcm_capture_xrun_check(struct snd_pcm_substream *substream); int snd_pcm_playback_xrun_asap(struct snd_pcm_substream *substream); int snd_pcm_capture_xrun_asap(struct snd_pcm_substream *substream); void snd_pcm_playback_silence(struct snd_pcm_substream *substream, snd_pcm_uframes_t new_hw_ptr); -void snd_pcm_tick_prepare(struct snd_pcm_substream *substream); -void snd_pcm_tick_set(struct snd_pcm_substream *substream, unsigned long ticks); -void snd_pcm_tick_elapsed(struct snd_pcm_substream *substream); void snd_pcm_period_elapsed(struct snd_pcm_substream *substream); snd_pcm_sframes_t snd_pcm_lib_write(struct snd_pcm_substream *substream, const void __user *buf, @@ -926,7 +895,13 @@ snd_pcm_sframes_t snd_pcm_lib_writev(struct snd_pcm_substream *substream, snd_pcm_sframes_t snd_pcm_lib_readv(struct snd_pcm_substream *substream, void __user **bufs, snd_pcm_uframes_t frames); +extern const struct snd_pcm_hw_constraint_list snd_pcm_known_rates; + int snd_pcm_limit_hw_rates(struct snd_pcm_runtime *runtime); +unsigned int snd_pcm_rate_to_rate_bit(unsigned int rate); +unsigned int snd_pcm_rate_bit_to_rate(unsigned int rate_bit); +unsigned int snd_pcm_rate_mask_intersect(unsigned int rates_a, + unsigned int rates_b); static inline void snd_pcm_set_runtime_buffer(struct snd_pcm_substream *substream, struct snd_dma_buffer *bufp) @@ -953,6 +928,15 @@ void snd_pcm_timer_resolution_change(struct snd_pcm_substream *substream); void snd_pcm_timer_init(struct snd_pcm_substream *substream); void snd_pcm_timer_done(struct snd_pcm_substream *substream); +static inline void snd_pcm_gettime(struct snd_pcm_runtime *runtime, + struct timespec *tv) +{ + if (runtime->tstamp_type == SNDRV_PCM_TSTAMP_TYPE_MONOTONIC) + ktime_get_ts(tv); + else + getnstimeofday(tv); +} + /* * Memory */ @@ -968,24 +952,99 @@ int snd_pcm_lib_preallocate_pages_for_all(struct snd_pcm *pcm, int snd_pcm_lib_malloc_pages(struct snd_pcm_substream *substream, size_t size); int snd_pcm_lib_free_pages(struct snd_pcm_substream *substream); -#define snd_pcm_substream_sgbuf(substream) ((substream)->runtime->dma_buffer_p->private_data) -#define snd_pcm_sgbuf_pages(size) snd_sgbuf_aligned_pages(size) -#define snd_pcm_sgbuf_get_addr(sgbuf,ofs) snd_sgbuf_get_addr(sgbuf,ofs) -struct page *snd_pcm_sgbuf_ops_page(struct snd_pcm_substream *substream, unsigned long offset); +int _snd_pcm_lib_alloc_vmalloc_buffer(struct snd_pcm_substream *substream, + size_t size, gfp_t gfp_flags); +int snd_pcm_lib_free_vmalloc_buffer(struct snd_pcm_substream *substream); +struct page *snd_pcm_lib_get_vmalloc_page(struct snd_pcm_substream *substream, + unsigned long offset); +#if 0 /* for kernel-doc */ +/** + * snd_pcm_lib_alloc_vmalloc_buffer - allocate virtual DMA buffer + * @substream: the substream to allocate the buffer to + * @size: the requested buffer size, in bytes + * + * Allocates the PCM substream buffer using vmalloc(), i.e., the memory is + * contiguous in kernel virtual space, but not in physical memory. Use this + * if the buffer is accessed by kernel code but not by device DMA. + * + * Return: 1 if the buffer was changed, 0 if not changed, or a negative error + * code. + */ +static int snd_pcm_lib_alloc_vmalloc_buffer + (struct snd_pcm_substream *substream, size_t size); +/** + * snd_pcm_lib_alloc_vmalloc_32_buffer - allocate 32-bit-addressable buffer + * @substream: the substream to allocate the buffer to + * @size: the requested buffer size, in bytes + * + * This function works like snd_pcm_lib_alloc_vmalloc_buffer(), but uses + * vmalloc_32(), i.e., the pages are allocated from 32-bit-addressable memory. + * + * Return: 1 if the buffer was changed, 0 if not changed, or a negative error + * code. + */ +static int snd_pcm_lib_alloc_vmalloc_32_buffer + (struct snd_pcm_substream *substream, size_t size); +#endif +#define snd_pcm_lib_alloc_vmalloc_buffer(subs, size) \ + _snd_pcm_lib_alloc_vmalloc_buffer \ + (subs, size, GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO) +#define snd_pcm_lib_alloc_vmalloc_32_buffer(subs, size) \ + _snd_pcm_lib_alloc_vmalloc_buffer \ + (subs, size, GFP_KERNEL | GFP_DMA32 | __GFP_ZERO) + +#define snd_pcm_get_dma_buf(substream) ((substream)->runtime->dma_buffer_p) + +#ifdef CONFIG_SND_DMA_SGBUF +/* + * SG-buffer handling + */ +#define snd_pcm_substream_sgbuf(substream) \ + snd_pcm_get_dma_buf(substream)->private_data + +struct page *snd_pcm_sgbuf_ops_page(struct snd_pcm_substream *substream, + unsigned long offset); +#else /* !SND_DMA_SGBUF */ +/* + * fake using a continuous buffer + */ +#define snd_pcm_sgbuf_ops_page NULL +#endif /* SND_DMA_SGBUF */ + +static inline dma_addr_t +snd_pcm_sgbuf_get_addr(struct snd_pcm_substream *substream, unsigned int ofs) +{ + return snd_sgbuf_get_addr(snd_pcm_get_dma_buf(substream), ofs); +} + +static inline void * +snd_pcm_sgbuf_get_ptr(struct snd_pcm_substream *substream, unsigned int ofs) +{ + return snd_sgbuf_get_ptr(snd_pcm_get_dma_buf(substream), ofs); +} + +static inline unsigned int +snd_pcm_sgbuf_get_chunk_size(struct snd_pcm_substream *substream, + unsigned int ofs, unsigned int size) +{ + return snd_sgbuf_get_chunk_size(snd_pcm_get_dma_buf(substream), ofs, size); +} /* handle mmap counter - PCM mmap callback should handle this counter properly */ static inline void snd_pcm_mmap_data_open(struct vm_area_struct *area) { struct snd_pcm_substream *substream = (struct snd_pcm_substream *)area->vm_private_data; - atomic_inc(&substream->runtime->mmap_count); + atomic_inc(&substream->mmap_count); } static inline void snd_pcm_mmap_data_close(struct vm_area_struct *area) { struct snd_pcm_substream *substream = (struct snd_pcm_substream *)area->vm_private_data; - atomic_dec(&substream->runtime->mmap_count); + atomic_dec(&substream->mmap_count); } +int snd_pcm_lib_default_mmap(struct snd_pcm_substream *substream, + struct vm_area_struct *area); /* mmap for io-memory area */ #if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_ALPHA) #define SNDRV_PCM_INFO_MMAP_IOMEM SNDRV_PCM_INFO_MMAP @@ -995,6 +1054,8 @@ int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, struct vm_area_s #define snd_pcm_lib_mmap_iomem NULL #endif +#define snd_pcm_lib_mmap_vmalloc NULL + static inline void snd_pcm_limit_isa_dma_size(int dma, size_t *max) { *max = dma < 4 ? 64 * 1024 : 128 * 1024; @@ -1009,4 +1070,83 @@ static inline void snd_pcm_limit_isa_dma_size(int dma, size_t *max) (IEC958_AES1_CON_PCM_CODER<<8)|\ (IEC958_AES3_CON_FS_48000<<24)) +#define PCM_RUNTIME_CHECK(sub) snd_BUG_ON(!(sub) || !(sub)->runtime) + +const char *snd_pcm_format_name(snd_pcm_format_t format); + +/** + * snd_pcm_stream_str - Get a string naming the direction of a stream + * @substream: the pcm substream instance + * + * Return: A string naming the direction of the stream. + */ +static inline const char *snd_pcm_stream_str(struct snd_pcm_substream *substream) +{ + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + return "Playback"; + else + return "Capture"; +} + +/* + * PCM channel-mapping control API + */ +/* array element of channel maps */ +struct snd_pcm_chmap_elem { + unsigned char channels; + unsigned char map[15]; +}; + +/* channel map information; retrieved via snd_kcontrol_chip() */ +struct snd_pcm_chmap { + struct snd_pcm *pcm; /* assigned PCM instance */ + int stream; /* PLAYBACK or CAPTURE */ + struct snd_kcontrol *kctl; + const struct snd_pcm_chmap_elem *chmap; + unsigned int max_channels; + unsigned int channel_mask; /* optional: active channels bitmask */ + void *private_data; /* optional: private data pointer */ +}; + +/* get the PCM substream assigned to the given chmap info */ +static inline struct snd_pcm_substream * +snd_pcm_chmap_substream(struct snd_pcm_chmap *info, unsigned int idx) +{ + struct snd_pcm_substream *s; + for (s = info->pcm->streams[info->stream].substream; s; s = s->next) + if (s->number == idx) + return s; + return NULL; +} + +/* ALSA-standard channel maps (RL/RR prior to C/LFE) */ +extern const struct snd_pcm_chmap_elem snd_pcm_std_chmaps[]; +/* Other world's standard channel maps (C/LFE prior to RL/RR) */ +extern const struct snd_pcm_chmap_elem snd_pcm_alt_chmaps[]; + +/* bit masks to be passed to snd_pcm_chmap.channel_mask field */ +#define SND_PCM_CHMAP_MASK_24 ((1U << 2) | (1U << 4)) +#define SND_PCM_CHMAP_MASK_246 (SND_PCM_CHMAP_MASK_24 | (1U << 6)) +#define SND_PCM_CHMAP_MASK_2468 (SND_PCM_CHMAP_MASK_246 | (1U << 8)) + +int snd_pcm_add_chmap_ctls(struct snd_pcm *pcm, int stream, + const struct snd_pcm_chmap_elem *chmap, + int max_channels, + unsigned long private_value, + struct snd_pcm_chmap **info_ret); + +/* Strong-typed conversion of pcm_format to bitwise */ +static inline u64 pcm_format_to_bits(snd_pcm_format_t pcm_format) +{ + return 1ULL << (__force int) pcm_format; +} + +/* printk helpers */ +#define pcm_err(pcm, fmt, args...) \ + dev_err((pcm)->card->dev, fmt, ##args) +#define pcm_warn(pcm, fmt, args...) \ + dev_warn((pcm)->card->dev, fmt, ##args) +#define pcm_dbg(pcm, fmt, args...) \ + dev_dbg((pcm)->card->dev, fmt, ##args) + #endif /* __SOUND_PCM_H */ |