[linux-2.6-block.git] / include / sound / soc-dai.h

/*
 * linux/sound/soc-dai.h -- ALSA SoC Layer
 *
 * Copyright:	2005-2008 Wolfson Microelectronics. PLC.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Digital Audio Interface (DAI) API.
 */

#ifndef __LINUX_SND_SOC_DAI_H
#define __LINUX_SND_SOC_DAI_H


#include <linux/list.h>

struct snd_pcm_substream;

/*
 * DAI hardware audio formats.
 *
 * Describes the physical PCM data formating and clocking. Add new formats
 * to the end.
 */
#define SND_SOC_DAIFMT_I2S		0 /* I2S mode */
#define SND_SOC_DAIFMT_RIGHT_J		1 /* Right Justified mode */
#define SND_SOC_DAIFMT_LEFT_J		2 /* Left Justified mode */
#define SND_SOC_DAIFMT_DSP_A		3 /* L data MSB after FRM LRC */
#define SND_SOC_DAIFMT_DSP_B		4 /* L data MSB during FRM LRC */
#define SND_SOC_DAIFMT_AC97		5 /* AC97 */

/* left and right justified also known as MSB and LSB respectively */
#define SND_SOC_DAIFMT_MSB		SND_SOC_DAIFMT_LEFT_J
#define SND_SOC_DAIFMT_LSB		SND_SOC_DAIFMT_RIGHT_J

/*
 * DAI Clock gating.
 *
 * DAI bit clocks can be be gated (disabled) when the DAI is not
 * sending or receiving PCM data in a frame. This can be used to save power.
 */
#define SND_SOC_DAIFMT_CONT		(0 << 4) /* continuous clock */
#define SND_SOC_DAIFMT_GATED		(1 << 4) /* clock is gated */

/*
 * DAI hardware signal inversions.
 *
 * Specifies whether the DAI can also support inverted clocks for the specified
 * format.
 */
#define SND_SOC_DAIFMT_NB_NF		(0 << 8) /* normal bit clock + frame */
#define SND_SOC_DAIFMT_NB_IF		(1 << 8) /* normal BCLK + inv FRM */
#define SND_SOC_DAIFMT_IB_NF		(2 << 8) /* invert BCLK + nor FRM */
#define SND_SOC_DAIFMT_IB_IF		(3 << 8) /* invert BCLK + FRM */

/*
 * DAI hardware clock masters.
 *
 * This is wrt the codec, the inverse is true for the interface
 * i.e. if the codec is clk and FRM master then the interface is
 * clk and frame slave.
 */
#define SND_SOC_DAIFMT_CBM_CFM		(0 << 12) /* codec clk & FRM master */
#define SND_SOC_DAIFMT_CBS_CFM		(1 << 12) /* codec clk slave & FRM master */
#define SND_SOC_DAIFMT_CBM_CFS		(2 << 12) /* codec clk master & frame slave */
#define SND_SOC_DAIFMT_CBS_CFS		(3 << 12) /* codec clk & FRM slave */

#define SND_SOC_DAIFMT_FORMAT_MASK	0x000f
#define SND_SOC_DAIFMT_CLOCK_MASK	0x00f0
#define SND_SOC_DAIFMT_INV_MASK		0x0f00
#define SND_SOC_DAIFMT_MASTER_MASK	0xf000

/*
 * Master Clock Directions
 */
#define SND_SOC_CLOCK_IN		0
#define SND_SOC_CLOCK_OUT		1

#define SND_SOC_STD_AC97_FMTS (SNDRV_PCM_FMTBIT_S16_LE |\
                               SNDRV_PCM_FMTBIT_S32_LE |\
                               SNDRV_PCM_FMTBIT_S32_BE)

struct snd_soc_dai_ops;
struct snd_soc_dai;
struct snd_ac97_bus_ops;

/* Digital Audio Interface registration */
int snd_soc_register_dai(struct snd_soc_dai *dai);
void snd_soc_unregister_dai(struct snd_soc_dai *dai);
int snd_soc_register_dais(struct snd_soc_dai *dai, size_t count);
void snd_soc_unregister_dais(struct snd_soc_dai *dai, size_t count);

/* Digital Audio Interface clocking API.*/
int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
	unsigned int freq, int dir);

int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
	int div_id, int div);

int snd_soc_dai_set_pll(struct snd_soc_dai *dai,
	int pll_id, unsigned int freq_in, unsigned int freq_out);

/* Digital Audio interface formatting */
int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt);

int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
	unsigned int mask, int slots);

int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate);

/* Digital Audio Interface mute */
int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute);

/*
 * Digital Audio Interface.
 *
 * Describes the Digital Audio Interface in terms of its ALSA, DAI and AC97
 * operations and capabilities. Codec and platform drivers will register this
 * structure for every DAI they have.
 *
 * This structure covers the clocking, formating and ALSA operations for each
 * interface.
 */
struct snd_soc_dai_ops {
	/*
	 * DAI clocking configuration, all optional.
	 * Called by soc_card drivers, normally in their hw_params.
	 */
	int (*set_sysclk)(struct snd_soc_dai *dai,
		int clk_id, unsigned int freq, int dir);
	int (*set_pll)(struct snd_soc_dai *dai,
		int pll_id, unsigned int freq_in, unsigned int freq_out);
	int (*set_clkdiv)(struct snd_soc_dai *dai, int div_id, int div);

	/*
	 * DAI format configuration
	 * Called by soc_card drivers, normally in their hw_params.
	 */
	int (*set_fmt)(struct snd_soc_dai *dai, unsigned int fmt);
	int (*set_tdm_slot)(struct snd_soc_dai *dai,
		unsigned int mask, int slots);
	int (*set_tristate)(struct snd_soc_dai *dai, int tristate);

	/*
	 * DAI digital mute - optional.
	 * Called by soc-core to minimise any pops.
	 */
	int (*digital_mute)(struct snd_soc_dai *dai, int mute);

	/*
	 * ALSA PCM audio operations - all optional.
	 * Called by soc-core during audio PCM operations.
	 */
	int (*startup)(struct snd_pcm_substream *,
		struct snd_soc_dai *);
	void (*shutdown)(struct snd_pcm_substream *,
		struct snd_soc_dai *);
	int (*hw_params)(struct snd_pcm_substream *,
		struct snd_pcm_hw_params *, struct snd_soc_dai *);
	int (*hw_free)(struct snd_pcm_substream *,
		struct snd_soc_dai *);
	int (*prepare)(struct snd_pcm_substream *,
		struct snd_soc_dai *);
	int (*trigger)(struct snd_pcm_substream *, int,
		struct snd_soc_dai *);
};

/*
 * Digital Audio Interface runtime data.
 *
 * Holds runtime data for a DAI.
 */
struct snd_soc_dai {
	/* DAI description */
	char *name;
	unsigned int id;
	int ac97_control;

	struct device *dev;
	void *ac97_pdata;	/* platform_data for the ac97 codec */

	/* DAI callbacks */
	int (*probe)(struct platform_device *pdev,
		     struct snd_soc_dai *dai);
	void (*remove)(struct platform_device *pdev,
		       struct snd_soc_dai *dai);
	int (*suspend)(struct snd_soc_dai *dai);
	int (*resume)(struct snd_soc_dai *dai);

	/* ops */
	struct snd_soc_dai_ops *ops;

	/* DAI capabilities */
	struct snd_soc_pcm_stream capture;
	struct snd_soc_pcm_stream playback;
	unsigned int symmetric_rates:1;

	/* DAI runtime info */
	struct snd_pcm_runtime *runtime;
	struct snd_soc_codec *codec;
	unsigned int active;
	unsigned char pop_wait:1;
	void *dma_data;

	/* DAI private data */
	void *private_data;

	/* parent platform */
	struct snd_soc_platform *platform;

	struct list_head list;
};

#endif
Commit	Line	Data
a47cbe72 MB	1	/*
	2	* linux/sound/soc-dai.h -- ALSA SoC Layer
	3	*
	4	* Copyright: 2005-2008 Wolfson Microelectronics. PLC.
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2 as
	8	* published by the Free Software Foundation.
	9	*
	10	* Digital Audio Interface (DAI) API.
	11	*/
	12
	13	#ifndef __LINUX_SND_SOC_DAI_H
	14	#define __LINUX_SND_SOC_DAI_H
	15
	16
	17	#include <linux/list.h>
	18
	19	struct snd_pcm_substream;
	20
	21	/*
	22	* DAI hardware audio formats.
	23	*
	24	* Describes the physical PCM data formating and clocking. Add new formats
	25	* to the end.
	26	*/
	27	#define SND_SOC_DAIFMT_I2S 0 /* I2S mode */
	28	#define SND_SOC_DAIFMT_RIGHT_J 1 /* Right Justified mode */
	29	#define SND_SOC_DAIFMT_LEFT_J 2 /* Left Justified mode */
47db8e89 PM	30	#define SND_SOC_DAIFMT_DSP_A 3 /* L data MSB after FRM LRC */
47db8e89 PM	31	#define SND_SOC_DAIFMT_DSP_B 4 /* L data MSB during FRM LRC */
a47cbe72 MB	32	#define SND_SOC_DAIFMT_AC97 5 /* AC97 */
	33
	34	/* left and right justified also known as MSB and LSB respectively */
	35	#define SND_SOC_DAIFMT_MSB SND_SOC_DAIFMT_LEFT_J
	36	#define SND_SOC_DAIFMT_LSB SND_SOC_DAIFMT_RIGHT_J
	37
	38	/*
	39	* DAI Clock gating.
	40	*
47db8e89	41	* DAI bit clocks can be be gated (disabled) when the DAI is not
a47cbe72 MB	42	* sending or receiving PCM data in a frame. This can be used to save power.
	43	*/
	44	#define SND_SOC_DAIFMT_CONT (0 << 4) /* continuous clock */
	45	#define SND_SOC_DAIFMT_GATED (1 << 4) /* clock is gated */
	46
a47cbe72 MB	47	/*
	48	* DAI hardware signal inversions.
	49	*
	50	* Specifies whether the DAI can also support inverted clocks for the specified
	51	* format.
	52	*/
	53	#define SND_SOC_DAIFMT_NB_NF (0 << 8) /* normal bit clock + frame */
47db8e89 PM	54	#define SND_SOC_DAIFMT_NB_IF (1 << 8) /* normal BCLK + inv FRM */
	55	#define SND_SOC_DAIFMT_IB_NF (2 << 8) /* invert BCLK + nor FRM */
	56	#define SND_SOC_DAIFMT_IB_IF (3 << 8) /* invert BCLK + FRM */
a47cbe72 MB	57
	58	/*
	59	* DAI hardware clock masters.
	60	*
	61	* This is wrt the codec, the inverse is true for the interface
47db8e89	62	* i.e. if the codec is clk and FRM master then the interface is
a47cbe72 MB	63	* clk and frame slave.
a47cbe72 MB	64	*/
47db8e89 PM	65	#define SND_SOC_DAIFMT_CBM_CFM (0 << 12) /* codec clk & FRM master */
47db8e89 PM	66	#define SND_SOC_DAIFMT_CBS_CFM (1 << 12) /* codec clk slave & FRM master */
a47cbe72	67	#define SND_SOC_DAIFMT_CBM_CFS (2 << 12) /* codec clk master & frame slave */
47db8e89	68	#define SND_SOC_DAIFMT_CBS_CFS (3 << 12) /* codec clk & FRM slave */
a47cbe72 MB	69
	70	#define SND_SOC_DAIFMT_FORMAT_MASK 0x000f
	71	#define SND_SOC_DAIFMT_CLOCK_MASK 0x00f0
	72	#define SND_SOC_DAIFMT_INV_MASK 0x0f00
	73	#define SND_SOC_DAIFMT_MASTER_MASK 0xf000
	74
	75	/*
	76	* Master Clock Directions
	77	*/
	78	#define SND_SOC_CLOCK_IN 0
	79	#define SND_SOC_CLOCK_OUT 1
	80
33f503c9	81	#define SND_SOC_STD_AC97_FMTS (SNDRV_PCM_FMTBIT_S16_LE \|\
d34c4307 JS	82	SNDRV_PCM_FMTBIT_S32_LE \|\
d34c4307 JS	83	SNDRV_PCM_FMTBIT_S32_BE)
33f503c9	84
a47cbe72 MB	85	struct snd_soc_dai_ops;
	86	struct snd_soc_dai;
	87	struct snd_ac97_bus_ops;
	88
9115171a MB	89	/* Digital Audio Interface registration */
	90	int snd_soc_register_dai(struct snd_soc_dai *dai);
	91	void snd_soc_unregister_dai(struct snd_soc_dai *dai);
	92	int snd_soc_register_dais(struct snd_soc_dai *dai, size_t count);
	93	void snd_soc_unregister_dais(struct snd_soc_dai *dai, size_t count);
	94
a47cbe72 MB	95	/* Digital Audio Interface clocking API.*/
	96	int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
	97	unsigned int freq, int dir);
	98
	99	int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
	100	int div_id, int div);
	101
	102	int snd_soc_dai_set_pll(struct snd_soc_dai *dai,
	103	int pll_id, unsigned int freq_in, unsigned int freq_out);
	104
	105	/* Digital Audio interface formatting */
	106	int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt);
	107
	108	int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
	109	unsigned int mask, int slots);
	110
	111	int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate);
	112
	113	/* Digital Audio Interface mute */
	114	int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute);
	115
	116	/*
	117	* Digital Audio Interface.
	118	*
47db8e89 PM	119	* Describes the Digital Audio Interface in terms of its ALSA, DAI and AC97
47db8e89 PM	120	* operations and capabilities. Codec and platform drivers will register this
a47cbe72 MB	121	* structure for every DAI they have.
	122	*
	123	* This structure covers the clocking, formating and ALSA operations for each
47db8e89	124	* interface.
a47cbe72 MB	125	*/
	126	struct snd_soc_dai_ops {
	127	/*
	128	* DAI clocking configuration, all optional.
	129	* Called by soc_card drivers, normally in their hw_params.
	130	*/
	131	int (set_sysclk)(struct snd_soc_dai dai,
	132	int clk_id, unsigned int freq, int dir);
	133	int (set_pll)(struct snd_soc_dai dai,
	134	int pll_id, unsigned int freq_in, unsigned int freq_out);
	135	int (set_clkdiv)(struct snd_soc_dai dai, int div_id, int div);
	136
	137	/*
	138	* DAI format configuration
	139	* Called by soc_card drivers, normally in their hw_params.
	140	*/
	141	int (set_fmt)(struct snd_soc_dai dai, unsigned int fmt);
	142	int (set_tdm_slot)(struct snd_soc_dai dai,
	143	unsigned int mask, int slots);
	144	int (set_tristate)(struct snd_soc_dai dai, int tristate);
	145
	146	/*
	147	* DAI digital mute - optional.
	148	* Called by soc-core to minimise any pops.
	149	*/
	150	int (digital_mute)(struct snd_soc_dai dai, int mute);
dee89c4d MB	151
	152	/*
	153	* ALSA PCM audio operations - all optional.
	154	* Called by soc-core during audio PCM operations.
	155	*/
	156	int (startup)(struct snd_pcm_substream ,
	157	struct snd_soc_dai *);
	158	void (shutdown)(struct snd_pcm_substream ,
	159	struct snd_soc_dai *);
	160	int (hw_params)(struct snd_pcm_substream ,
	161	struct snd_pcm_hw_params , struct snd_soc_dai );
	162	int (hw_free)(struct snd_pcm_substream ,
	163	struct snd_soc_dai *);
	164	int (prepare)(struct snd_pcm_substream ,
	165	struct snd_soc_dai *);
	166	int (trigger)(struct snd_pcm_substream , int,
	167	struct snd_soc_dai *);
a47cbe72 MB	168	};
	169
	170	/*
	171	* Digital Audio Interface runtime data.
	172	*
	173	* Holds runtime data for a DAI.
	174	*/
	175	struct snd_soc_dai {
	176	/* DAI description */
	177	char *name;
	178	unsigned int id;
3ba9e10a	179	int ac97_control;
a47cbe72	180
9115171a	181	struct device *dev;
474828a4	182	void ac97_pdata; / platform_data for the ac97 codec */
9115171a	183
a47cbe72 MB	184	/* DAI callbacks */
	185	int (probe)(struct platform_device pdev,
	186	struct snd_soc_dai *dai);
	187	void (remove)(struct platform_device pdev,
	188	struct snd_soc_dai *dai);
dc7d7b83 MB	189	int (suspend)(struct snd_soc_dai dai);
dc7d7b83 MB	190	int (resume)(struct snd_soc_dai dai);
a47cbe72 MB	191
a47cbe72 MB	192	/* ops */
6335d055	193	struct snd_soc_dai_ops *ops;
a47cbe72 MB	194
	195	/* DAI capabilities */
	196	struct snd_soc_pcm_stream capture;
	197	struct snd_soc_pcm_stream playback;
06f409d7	198	unsigned int symmetric_rates:1;
a47cbe72 MB	199
	200	/* DAI runtime info */
	201	struct snd_pcm_runtime *runtime;
	202	struct snd_soc_codec *codec;
	203	unsigned int active;
	204	unsigned char pop_wait:1;
	205	void *dma_data;
	206
	207	/* DAI private data */
	208	void *private_data;
	209
bbd99307 MB	210	/* parent platform */
bbd99307 MB	211	struct snd_soc_platform *platform;
a47cbe72 MB	212
	213	struct list_head list;
	214	};
	215
	216	#endif