[GitHub/mt8127/android_kernel_alcatel_ttab.git] / sound / usb / card.h

#ifndef __USBAUDIO_CARD_H
#define __USBAUDIO_CARD_H

#define MAX_NR_RATES	1024
#define MAX_PACKS	20
#define MAX_PACKS_HS	(MAX_PACKS * 8)	/* in high speed mode */
#define MAX_URBS	8
#define SYNC_URBS	4	/* always four urbs for sync */
#define MAX_QUEUE	24	/* try not to exceed this queue length, in ms */

struct audioformat {
	struct list_head list;
	u64 formats;			/* ALSA format bits */
	unsigned int channels;		/* # channels */
	unsigned int fmt_type;		/* USB audio format type (1-3) */
	unsigned int frame_size;	/* samples per frame for non-audio */
	int iface;			/* interface number */
	unsigned char altsetting;	/* corresponding alternate setting */
	unsigned char altset_idx;	/* array index of altenate setting */
	unsigned char attributes;	/* corresponding attributes of cs endpoint */
	unsigned char endpoint;		/* endpoint */
	unsigned char ep_attr;		/* endpoint attributes */
	unsigned char datainterval;	/* log_2 of data packet interval */
	unsigned int maxpacksize;	/* max. packet size */
	unsigned int rates;		/* rate bitmasks */
	unsigned int rate_min, rate_max;	/* min/max rates */
	unsigned int nr_rates;		/* number of rate table entries */
	unsigned int *rate_table;	/* rate table */
	unsigned char clock;		/* associated clock */
	struct snd_pcm_chmap_elem *chmap; /* (optional) channel map */
};

struct snd_usb_substream;
struct snd_usb_endpoint;

struct snd_urb_ctx {
	struct urb *urb;
	unsigned int buffer_size;	/* size of data buffer, if data URB */
	struct snd_usb_substream *subs;
	struct snd_usb_endpoint *ep;
	int index;	/* index for urb array */
	int packets;	/* number of packets per urb */
	int packet_size[MAX_PACKS_HS]; /* size of packets for next submission */
	struct list_head ready_list;
};

struct snd_usb_endpoint {
	struct snd_usb_audio *chip;

	int use_count;
	int ep_num;		/* the referenced endpoint number */
	int type;		/* SND_USB_ENDPOINT_TYPE_* */
	unsigned long flags;

	void (*prepare_data_urb) (struct snd_usb_substream *subs,
				  struct urb *urb);
	void (*retire_data_urb) (struct snd_usb_substream *subs,
				 struct urb *urb);

	struct snd_usb_substream *data_subs;
	struct snd_usb_endpoint *sync_master;
	struct snd_usb_endpoint *sync_slave;

	struct snd_urb_ctx urb[MAX_URBS];

	struct snd_usb_packet_info {
		uint32_t packet_size[MAX_PACKS_HS];
		int packets;
	} next_packet[MAX_URBS];
	int next_packet_read_pos, next_packet_write_pos;
	struct list_head ready_playback_urbs;

	unsigned int nurbs;		/* # urbs */
	unsigned long active_mask;	/* bitmask of active urbs */
	unsigned long unlink_mask;	/* bitmask of unlinked urbs */
	char *syncbuf;			/* sync buffer for all sync URBs */
	dma_addr_t sync_dma;		/* DMA address of syncbuf */

	unsigned int pipe;		/* the data i/o pipe */
	unsigned int freqn;		/* nominal sampling rate in fs/fps in Q16.16 format */
	unsigned int freqm;		/* momentary sampling rate in fs/fps in Q16.16 format */
	int	   freqshift;		/* how much to shift the feedback value to get Q16.16 */
	unsigned int freqmax;		/* maximum sampling rate, used for buffer management */
	unsigned int phase;		/* phase accumulator */
	unsigned int maxpacksize;	/* max packet size in bytes */
	unsigned int maxframesize;      /* max packet size in frames */
	unsigned int curpacksize;	/* current packet size in bytes (for capture) */
	unsigned int curframesize;      /* current packet size in frames (for capture) */
	unsigned int syncmaxsize;	/* sync endpoint packet size */
	unsigned int fill_max:1;	/* fill max packet size always */
	unsigned int datainterval;      /* log_2 of data packet interval */
	unsigned int syncinterval;	/* P for adaptive mode, 0 otherwise */
	unsigned char silence_value;
	unsigned int stride;
	int iface, alt_idx;
	int skip_packets;		/* quirks for devices to ignore the first n packets
					   in a stream */

	spinlock_t lock;
	struct list_head list;
};

struct snd_usb_substream {
	struct snd_usb_stream *stream;
	struct usb_device *dev;
	struct snd_pcm_substream *pcm_substream;
	int direction;	/* playback or capture */
	int interface;	/* current interface */
	int endpoint;	/* assigned endpoint */
	struct audioformat *cur_audiofmt;	/* current audioformat pointer (for hw_params callback) */
	snd_pcm_format_t pcm_format;	/* current audio format (for hw_params callback) */
	unsigned int channels;		/* current number of channels (for hw_params callback) */
	unsigned int channels_max;	/* max channels in the all audiofmts */
	unsigned int cur_rate;		/* current rate (for hw_params callback) */
	unsigned int period_bytes;	/* current period bytes (for hw_params callback) */
	unsigned int altset_idx;     /* USB data format: index of alternate setting */
	unsigned int txfr_quirk:1;	/* allow sub-frame alignment */
	unsigned int fmt_type;		/* USB audio format type (1-3) */
	unsigned int pkt_offset_adj;	/* Bytes to drop from beginning of packets (for non-compliant devices) */

	unsigned int running: 1;	/* running status */

	unsigned int hwptr_done;	/* processed byte position in the buffer */
	unsigned int transfer_done;		/* processed frames since last period update */

	/* data and sync endpoints for this stream */
	unsigned int ep_num;		/* the endpoint number */
	struct snd_usb_endpoint *data_endpoint;
	struct snd_usb_endpoint *sync_endpoint;
	unsigned long flags;
	bool need_setup_ep;		/* (re)configure EP at prepare? */
	unsigned int speed;		/* USB_SPEED_XXX */

	u64 formats;			/* format bitmasks (all or'ed) */
	unsigned int num_formats;		/* number of supported audio formats (list) */
	struct list_head fmt_list;	/* format list */
	struct snd_pcm_hw_constraint_list rate_list;	/* limited rates */
	spinlock_t lock;

	int last_frame_number;          /* stored frame number */
	int last_delay;                 /* stored delay */
};

struct snd_usb_stream {
	struct snd_usb_audio *chip;
	struct snd_pcm *pcm;
	int pcm_index;
	unsigned int fmt_type;		/* USB audio format type (1-3) */
	struct snd_usb_substream substream[2];
	struct list_head list;
};

#endif /* __USBAUDIO_CARD_H */
Commit	Line	Data
e5779998 DM	1	#ifndef __USBAUDIO_CARD_H
	2	#define __USBAUDIO_CARD_H
	3
8866f405	4	#define MAX_NR_RATES 1024
e5779998 DM	5	#define MAX_PACKS 20
	6	#define MAX_PACKS_HS (MAX_PACKS * 8) /* in high speed mode */
	7	#define MAX_URBS 8
	8	#define SYNC_URBS 4 /* always four urbs for sync */
	9	#define MAX_QUEUE 24 /* try not to exceed this queue length, in ms */
	10
	11	struct audioformat {
	12	struct list_head list;
015eb0b0	13	u64 formats; /* ALSA format bits */
e5779998 DM	14	unsigned int channels; /* # channels */
	15	unsigned int fmt_type; /* USB audio format type (1-3) */
	16	unsigned int frame_size; /* samples per frame for non-audio */
	17	int iface; /* interface number */
	18	unsigned char altsetting; /* corresponding alternate setting */
	19	unsigned char altset_idx; /* array index of altenate setting */
	20	unsigned char attributes; /* corresponding attributes of cs endpoint */
	21	unsigned char endpoint; /* endpoint */
	22	unsigned char ep_attr; /* endpoint attributes */
	23	unsigned char datainterval; /* log_2 of data packet interval */
	24	unsigned int maxpacksize; /* max. packet size */
	25	unsigned int rates; /* rate bitmasks */
	26	unsigned int rate_min, rate_max; /* min/max rates */
	27	unsigned int nr_rates; /* number of rate table entries */
	28	unsigned int rate_table; / rate table */
79f920fb	29	unsigned char clock; /* associated clock */
04324ccc	30	struct snd_pcm_chmap_elem chmap; / (optional) channel map */
e5779998 DM	31	};
	32
	33	struct snd_usb_substream;
8fdff6a3	34	struct snd_usb_endpoint;
e5779998 DM	35
	36	struct snd_urb_ctx {
	37	struct urb *urb;
	38	unsigned int buffer_size; /* size of data buffer, if data URB */
	39	struct snd_usb_substream *subs;
8fdff6a3	40	struct snd_usb_endpoint *ep;
e5779998 DM	41	int index; /* index for urb array */
e5779998 DM	42	int packets; /* number of packets per urb */
8fdff6a3 DM	43	int packet_size[MAX_PACKS_HS]; /* size of packets for next submission */
8fdff6a3 DM	44	struct list_head ready_list;
e5779998 DM	45	};
e5779998 DM	46
8fdff6a3 DM	47	struct snd_usb_endpoint {
	48	struct snd_usb_audio *chip;
	49
	50	int use_count;
	51	int ep_num; /* the referenced endpoint number */
	52	int type; /* SND_USB_ENDPOINT_TYPE_* */
	53	unsigned long flags;
	54
	55	void (prepare_data_urb) (struct snd_usb_substream subs,
	56	struct urb *urb);
	57	void (retire_data_urb) (struct snd_usb_substream subs,
	58	struct urb *urb);
	59
	60	struct snd_usb_substream *data_subs;
	61	struct snd_usb_endpoint *sync_master;
	62	struct snd_usb_endpoint *sync_slave;
	63
	64	struct snd_urb_ctx urb[MAX_URBS];
	65
	66	struct snd_usb_packet_info {
	67	uint32_t packet_size[MAX_PACKS_HS];
	68	int packets;
	69	} next_packet[MAX_URBS];
	70	int next_packet_read_pos, next_packet_write_pos;
	71	struct list_head ready_playback_urbs;
	72
	73	unsigned int nurbs; /* # urbs */
	74	unsigned long active_mask; /* bitmask of active urbs */
	75	unsigned long unlink_mask; /* bitmask of unlinked urbs */
	76	char syncbuf; / sync buffer for all sync URBs */
	77	dma_addr_t sync_dma; /* DMA address of syncbuf */
	78
	79	unsigned int pipe; /* the data i/o pipe */
	80	unsigned int freqn; /* nominal sampling rate in fs/fps in Q16.16 format */
	81	unsigned int freqm; /* momentary sampling rate in fs/fps in Q16.16 format */
	82	int freqshift; /* how much to shift the feedback value to get Q16.16 */
	83	unsigned int freqmax; /* maximum sampling rate, used for buffer management */
	84	unsigned int phase; /* phase accumulator */
	85	unsigned int maxpacksize; /* max packet size in bytes */
	86	unsigned int maxframesize; /* max packet size in frames */
	87	unsigned int curpacksize; /* current packet size in bytes (for capture) */
	88	unsigned int curframesize; /* current packet size in frames (for capture) */
	89	unsigned int syncmaxsize; /* sync endpoint packet size */
	90	unsigned int fill_max:1; /* fill max packet size always */
	91	unsigned int datainterval; /* log_2 of data packet interval */
	92	unsigned int syncinterval; /* P for adaptive mode, 0 otherwise */
	93	unsigned char silence_value;
	94	unsigned int stride;
	95	int iface, alt_idx;
2b58fd5b DM	96	int skip_packets; /* quirks for devices to ignore the first n packets
2b58fd5b DM	97	in a stream */
8fdff6a3 DM	98
	99	spinlock_t lock;
	100	struct list_head list;
	101	};
	102
e5779998 DM	103	struct snd_usb_substream {
	104	struct snd_usb_stream *stream;
	105	struct usb_device *dev;
	106	struct snd_pcm_substream *pcm_substream;
	107	int direction; /* playback or capture */
	108	int interface; /* current interface */
	109	int endpoint; /* assigned endpoint */
	110	struct audioformat cur_audiofmt; / current audioformat pointer (for hw_params callback) */
61a70950 DR	111	snd_pcm_format_t pcm_format; /* current audio format (for hw_params callback) */
61a70950 DR	112	unsigned int channels; /* current number of channels (for hw_params callback) */
04324ccc	113	unsigned int channels_max; /* max channels in the all audiofmts */
e5779998 DM	114	unsigned int cur_rate; /* current rate (for hw_params callback) */
e5779998 DM	115	unsigned int period_bytes; /* current period bytes (for hw_params callback) */
e11b4e0e	116	unsigned int altset_idx; /* USB data format: index of alternate setting */
e5779998 DM	117	unsigned int txfr_quirk:1; /* allow sub-frame alignment */
e5779998 DM	118	unsigned int fmt_type; /* USB audio format type (1-3) */
1539d4f8	119	unsigned int pkt_offset_adj; /* Bytes to drop from beginning of packets (for non-compliant devices) */
e5779998 DM	120
	121	unsigned int running: 1; /* running status */
	122
	123	unsigned int hwptr_done; /* processed byte position in the buffer */
	124	unsigned int transfer_done; /* processed frames since last period update */
e5779998	125
edcd3633	126	/* data and sync endpoints for this stream */
8260ef07	127	unsigned int ep_num; /* the endpoint number */
edcd3633 DM	128	struct snd_usb_endpoint *data_endpoint;
	129	struct snd_usb_endpoint *sync_endpoint;
	130	unsigned long flags;
384dc085	131	bool need_setup_ep; /* (re)configure EP at prepare? */
978520b7	132	unsigned int speed; /* USB_SPEED_XXX */
e5779998 DM	133
	134	u64 formats; /* format bitmasks (all or'ed) */
	135	unsigned int num_formats; /* number of supported audio formats (list) */
	136	struct list_head fmt_list; /* format list */
	137	struct snd_pcm_hw_constraint_list rate_list; /* limited rates */
	138	spinlock_t lock;
	139
294c4fb8 PLB	140	int last_frame_number; /* stored frame number */
294c4fb8 PLB	141	int last_delay; /* stored delay */
e5779998 DM	142	};
	143
	144	struct snd_usb_stream {
	145	struct snd_usb_audio *chip;
	146	struct snd_pcm *pcm;
	147	int pcm_index;
	148	unsigned int fmt_type; /* USB audio format type (1-3) */
	149	struct snd_usb_substream substream[2];
	150	struct list_head list;
	151	};
	152
	153	#endif /* __USBAUDIO_CARD_H */