sound/atmel/ac97c.h

Source file repositories/reference/linux-study-clean/sound/atmel/ac97c.h

File Facts

System
Linux kernel
Corpus path
sound/atmel/ac97c.h
Extension
.h
Size
1899 bytes
Lines
71
Domain
Driver Families
Bucket
sound/atmel
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

#ifndef __SOUND_ATMEL_AC97C_H
#define __SOUND_ATMEL_AC97C_H

#define AC97C_MR		0x08
#define AC97C_ICA		0x10
#define AC97C_OCA		0x14
#define AC97C_CARHR		0x20
#define AC97C_CATHR		0x24
#define AC97C_CASR		0x28
#define AC97C_CAMR		0x2c
#define AC97C_CORHR		0x40
#define AC97C_COTHR		0x44
#define AC97C_COSR		0x48
#define AC97C_COMR		0x4c
#define AC97C_SR		0x50
#define AC97C_IER		0x54
#define AC97C_IDR		0x58
#define AC97C_IMR		0x5c
#define AC97C_VERSION		0xfc

#define AC97C_CATPR		PDC_TPR
#define AC97C_CATCR		PDC_TCR
#define AC97C_CATNPR		PDC_TNPR
#define AC97C_CATNCR		PDC_TNCR
#define AC97C_CARPR		PDC_RPR
#define AC97C_CARCR		PDC_RCR
#define AC97C_CARNPR		PDC_RNPR
#define AC97C_CARNCR		PDC_RNCR
#define AC97C_PTCR		PDC_PTCR

#define AC97C_MR_ENA		(1 << 0)
#define AC97C_MR_WRST		(1 << 1)
#define AC97C_MR_VRA		(1 << 2)

#define AC97C_CSR_TXRDY		(1 << 0)
#define AC97C_CSR_TXEMPTY	(1 << 1)
#define AC97C_CSR_UNRUN		(1 << 2)
#define AC97C_CSR_RXRDY		(1 << 4)
#define AC97C_CSR_OVRUN		(1 << 5)
#define AC97C_CSR_ENDTX		(1 << 10)
#define AC97C_CSR_ENDRX		(1 << 14)

#define AC97C_CMR_SIZE_20	(0 << 16)
#define AC97C_CMR_SIZE_18	(1 << 16)
#define AC97C_CMR_SIZE_16	(2 << 16)
#define AC97C_CMR_SIZE_10	(3 << 16)
#define AC97C_CMR_CEM_LITTLE	(1 << 18)
#define AC97C_CMR_CEM_BIG	(0 << 18)
#define AC97C_CMR_CENA		(1 << 21)
#define AC97C_CMR_DMAEN		(1 << 22)

#define AC97C_SR_CAEVT		(1 << 3)
#define AC97C_SR_COEVT		(1 << 2)
#define AC97C_SR_WKUP		(1 << 1)
#define AC97C_SR_SOF		(1 << 0)

#define AC97C_CH_MASK(slot)						\
	(0x7 << (3 * (AC97_SLOT_##slot - 3)))
#define AC97C_CH_ASSIGN(slot, channel)					\
	(AC97C_CHANNEL_##channel << (3 * (AC97_SLOT_##slot - 3)))
#define AC97C_CHANNEL_NONE	0x0
#define AC97C_CHANNEL_A		0x1

#endif /* __SOUND_ATMEL_AC97C_H */

Annotation

Implementation Notes