sound/soc/codecs/wm9713.h

Source file repositories/reference/linux-study-clean/sound/soc/codecs/wm9713.h

File Facts

System
Linux kernel
Corpus path
sound/soc/codecs/wm9713.h
Extension
.h
Size
1174 bytes
Lines
46
Domain
Driver Families
Bucket
sound/soc
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 _WM9713_H
#define _WM9713_H

/* clock inputs */
#define WM9713_CLKA_PIN			0
#define WM9713_CLKB_PIN			1

/* clock divider ID's */
#define WM9713_PCMCLK_DIV		0
#define WM9713_CLKA_MULT		1
#define WM9713_CLKB_MULT		2
#define WM9713_HIFI_DIV			3
#define WM9713_PCMBCLK_DIV		4
#define WM9713_PCMCLK_PLL_DIV           5
#define WM9713_HIFI_PLL_DIV             6

/* Calculate the appropriate bit mask for the external PCM clock divider */
#define WM9713_PCMDIV(x)	((x - 1) << 8)

/* Calculate the appropriate bit mask for the external HiFi clock divider */
#define WM9713_HIFIDIV(x)	((x - 1) << 12)

/* MCLK clock mulitipliers */
#define WM9713_CLKA_X1		(0 << 1)
#define WM9713_CLKA_X2		(1 << 1)
#define WM9713_CLKB_X1		(0 << 2)
#define WM9713_CLKB_X2		(1 << 2)

/* MCLK clock MUX */
#define WM9713_CLK_MUX_A		(0 << 0)
#define WM9713_CLK_MUX_B		(1 << 0)

/* Voice DAI BCLK divider */
#define WM9713_PCMBCLK_DIV_1	(0 << 9)
#define WM9713_PCMBCLK_DIV_2	(1 << 9)
#define WM9713_PCMBCLK_DIV_4	(2 << 9)
#define WM9713_PCMBCLK_DIV_8	(3 << 9)
#define WM9713_PCMBCLK_DIV_16	(4 << 9)

#endif

Annotation

Implementation Notes