sound/pci/pcxhr/pcxhr_core.h

Source file repositories/reference/linux-study-clean/sound/pci/pcxhr/pcxhr_core.h

File Facts

System
Linux kernel
Corpus path
sound/pci/pcxhr/pcxhr_core.h
Extension
.h
Size
6453 bytes
Lines
193
Domain
Driver Families
Bucket
sound/pci
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct pcxhr_rmh {
	u16	cmd_len;		/* length of the command to send (WORDs) */
	u16	stat_len;		/* length of the status received (WORDs) */
	u16	dsp_stat;		/* status type, RMP_SSIZE_XXX */
	u16	cmd_idx;		/* index of the command */
	u32	cmd[PCXHR_SIZE_MAX_CMD];
	u32	stat[PCXHR_SIZE_MAX_STATUS];
};

enum {
	CMD_VERSION,			/* cmd_len = 2	stat_len = 1 */
	CMD_SUPPORTED,			/* cmd_len = 1	stat_len = 4 */
	CMD_TEST_IT,			/* cmd_len = 1	stat_len = 1 */
	CMD_SEND_IRQA,			/* cmd_len = 1	stat_len = 0 */
	CMD_ACCESS_IO_WRITE,		/* cmd_len >= 1	stat_len >= 1 */
	CMD_ACCESS_IO_READ,		/* cmd_len >= 1	stat_len >= 1 */
	CMD_ASYNC,			/* cmd_len = 1	stat_len = 1 */
	CMD_MODIFY_CLOCK,		/* cmd_len = 3	stat_len = 0 */
	CMD_RESYNC_AUDIO_INPUTS,	/* cmd_len = 1	stat_len = 0 */
	CMD_GET_DSP_RESOURCES,		/* cmd_len = 1	stat_len = 4 */
	CMD_SET_TIMER_INTERRUPT,	/* cmd_len = 1	stat_len = 0 */
	CMD_RES_PIPE,			/* cmd_len >=2	stat_len = 0 */
	CMD_FREE_PIPE,			/* cmd_len = 1	stat_len = 0 */
	CMD_CONF_PIPE,			/* cmd_len = 2	stat_len = 0 */
	CMD_STOP_PIPE,			/* cmd_len = 1	stat_len = 0 */
	CMD_PIPE_SAMPLE_COUNT,		/* cmd_len = 2	stat_len = 2 */
	CMD_CAN_START_PIPE,		/* cmd_len >= 1	stat_len = 1 */
	CMD_START_STREAM,		/* cmd_len = 2	stat_len = 0 */
	CMD_STREAM_OUT_LEVEL_ADJUST,	/* cmd_len >= 1	stat_len = 0 */
	CMD_STOP_STREAM,		/* cmd_len = 2	stat_len = 0 */
	CMD_UPDATE_R_BUFFERS,		/* cmd_len = 4	stat_len = 0 */
	CMD_FORMAT_STREAM_OUT,		/* cmd_len >= 2	stat_len = 0 */
	CMD_FORMAT_STREAM_IN,		/* cmd_len >= 4	stat_len = 0 */
	CMD_STREAM_SAMPLE_COUNT,	/* cmd_len = 2	stat_len = (2 * nb_stream) */
	CMD_AUDIO_LEVEL_ADJUST,		/* cmd_len = 3	stat_len = 0 */
	CMD_GET_TIME_CODE,		/* cmd_len = 1  stat_len = 5 */
	CMD_MANAGE_SIGNAL,		/* cmd_len = 1  stat_len = 0 */
	CMD_LAST_INDEX
};

#define MASK_DSP_WORD		0x00ffffff
#define MASK_ALL_STREAM		0x00ffffff
#define MASK_DSP_WORD_LEVEL	0x000001ff
#define MASK_FIRST_FIELD	0x0000001f
#define FIELD_SIZE		5

/*
 init the rmh struct; by default cmd_len is set to 1
 */
void pcxhr_init_rmh(struct pcxhr_rmh *rmh, int cmd);

void pcxhr_set_pipe_cmd_params(struct pcxhr_rmh* rmh, int capture, unsigned int param1,
			       unsigned int param2, unsigned int param3);

#define DSP_EXT_CMD_SET(x) (x->dsp_version > 0x012800)

/*
 send the rmh
 */
int pcxhr_send_msg(struct pcxhr_mgr *mgr, struct pcxhr_rmh *rmh);


/* values used for CMD_ACCESS_IO_WRITE and CMD_ACCESS_IO_READ */
#define IO_NUM_REG_CONT			0
#define IO_NUM_REG_GENCLK		1
#define IO_NUM_REG_MUTE_OUT		2
#define IO_NUM_SPEED_RATIO		4
#define IO_NUM_REG_STATUS		5
#define IO_NUM_REG_CUER			10
#define IO_NUM_UER_CHIP_REG		11
#define IO_NUM_REG_CONFIG_SRC		12
#define IO_NUM_REG_OUT_ANA_LEVEL	20
#define IO_NUM_REG_IN_ANA_LEVEL		21

#define REG_CONT_VALSMPTE		0x000800
#define REG_CONT_UNMUTE_INPUTS		0x020000

/* parameters used with register IO_NUM_REG_STATUS */
#define REG_STATUS_OPTIONS		0
#define REG_STATUS_AES_SYNC		8
#define REG_STATUS_AES_1		9
#define REG_STATUS_AES_2		10
#define REG_STATUS_AES_3		11
#define REG_STATUS_AES_4		12
#define REG_STATUS_WORD_CLOCK		13
#define REG_STATUS_INTER_SYNC		14
#define REG_STATUS_CURRENT		0x80
/* results */
#define REG_STATUS_OPT_NO_VIDEO_SIGNAL	0x01
#define REG_STATUS_OPT_DAUGHTER_MASK	0x1c

Annotation

Implementation Notes