vx_core.h

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/*
 * Driver for Digigram VX soundcards
 *
 * Hardware core part
 *
 * Copyright (c) 2002 by Takashi Iwai <[e-mail]>
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 */

#ifndef __SOUND_VX_COMMON_H
#define __SOUND_VX_COMMON_H

#include <sound/pcm.h>
#include <sound/hwdep.h>
#include <linux/interrupt.h>

typedef struct snd_vx_core vx_core_t;
typedef struct vx_pipe vx_pipe_t;

#define VX_DRIVER_VERSION	0x010000	/* 1.0.0 */

/*
 */
#define SIZE_MAX_CMD    0x10
#define SIZE_MAX_STATUS 0x10

struct vx_rmh {
	u16	LgCmd;		/* length of the command to send (WORDs) */
	u16	LgStat;		/* length of the status received (WORDs) */
	u32	Cmd[SIZE_MAX_CMD];
	u32	Stat[SIZE_MAX_STATUS];
	u16	DspStat;	/* status type, RMP_SSIZE_XXX */
};
	
typedef u64 pcx_time_t;

#define VX_MAX_PIPES	16
#define VX_MAX_PERIODS	32
#define VX_MAX_CODECS	2

struct vx_ibl_info {
	int size;	/* the current IBL size (0 = query) in bytes */
	int max_size;	/* max. IBL size in bytes */
	int min_size;	/* min. IBL size in bytes */
	int granularity;	/* granularity */
};

struct vx_pipe {
	int number;
	unsigned int is_capture: 1;
	unsigned int data_mode: 1;
	unsigned int running: 1;
	unsigned int prepared: 1;
	int channels;
	unsigned int differed_type;
	pcx_time_t pcx_time;
	snd_pcm_substream_t *substream;

	int hbuf_size;		/* H-buffer size in bytes */
	int buffer_bytes;	/* the ALSA pcm buffer size in bytes */
	int period_bytes;	/* the ALSA pcm period size in bytes */
	int hw_ptr;		/* the current hardware pointer in bytes */
	int position;		/* the current position in frames (playback only) */
	int transferred;	/* the transferred size (per period) in frames */
	int align;		/* size of alignment */
	u64 cur_count;		/* current sample position (for playback) */

	unsigned int references;     /* an output pipe may be used for monitoring and/or playback */
	vx_pipe_t *monitoring_pipe;  /* pointer to the monitoring pipe (capture pipe only)*/

	struct tasklet_struct start_tq;
};

struct snd_vx_ops {
	/* low-level i/o */
	unsigned char (*in8)(vx_core_t *chip, int reg);
	unsigned int (*in32)(vx_core_t *chip, int reg);
	void (*out8)(vx_core_t *chip, int reg, unsigned char val);
	void (*out32)(vx_core_t *chip, int reg, unsigned int val);
	/* irq */
	int (*test_and_ack)(vx_core_t *chip);
	void (*validate_irq)(vx_core_t *chip, int enable);
	/* codec */
	void (*write_codec)(vx_core_t *chip, int codec, unsigned int data);
	void (*akm_write)(vx_core_t *chip, int reg, unsigned int data);
	void (*reset_codec)(vx_core_t *chip);
	void (*change_audio_source)(vx_core_t *chip, int src);
	void (*set_clock_source)(vx_core_t *chp, int src);
	/* chip init */
	int (*load_dsp)(vx_core_t *chip, const snd_hwdep_dsp_image_t *dsp);
	void (*reset_dsp)(vx_core_t *chip);
	void (*reset_board)(vx_core_t *chip, int cold_reset);
	int (*add_controls)(vx_core_t *chip);
	/* pcm */
	void (*dma_write)(vx_core_t *chip, snd_pcm_runtime_t *runtime,
			  vx_pipe_t *pipe, int count);
	void (*dma_read)(vx_core_t *chip, snd_pcm_runtime_t *runtime,
			  vx_pipe_t *pipe, int count);
};

struct snd_vx_hardware {
	const char *name;
	int type;	/* VX_TYPE_XXX */

	/* hardware specs */
	unsigned int num_codecs;
	unsigned int num_ins;
	unsigned int num_outs;
	unsigned int output_level_max;
};

/* hwdep id string */
#define SND_VX_HWDEP_ID		"VX Loader"

/* hardware type */
enum {
	/* VX222 PCI */
	VX_TYPE_BOARD,		/* old VX222 PCI */
	VX_TYPE_V2,		/* VX222 V2 PCI */
	VX_TYPE_MIC,		/* VX222 Mic PCI */
	/* VX-pocket */
	VX_TYPE_VXPOCKET,	/* VXpocket V2 */
	VX_TYPE_VXP440,		/* VXpocket 440 */
	VX_TYPE_NUMS
};

/* chip status */
enum {
	VX_STAT_XILINX_LOADED	= (1 << 0),	/* devices are registered */
	VX_STAT_DEVICE_INIT	= (1 << 1),	/* devices are registered */
	VX_STAT_CHIP_INIT	= (1 << 2),	/* all operational */
	VX_STAT_IN_SUSPEND	= (1 << 10),	/* in suspend phase */
	VX_STAT_IS_STALE	= (1 << 15)	/* device is stale */
};

/* min/max values for analog output for old codecs */
#define VX_ANALOG_OUT_LEVEL_MAX		0xe3

struct snd_vx_core {
	/* ALSA stuff */
	snd_card_t *card;
	snd_pcm_t *pcm[VX_MAX_CODECS];
	int type;	/* VX_TYPE_XXX */

	int irq;
	/* ports are defined externally */

	/* low-level functions */
	struct snd_vx_hardware *hw;
	struct snd_vx_ops *ops;

	spinlock_t lock;
	spinlock_t irq_lock;
	struct tasklet_struct tq;

	unsigned int chip_status;
	unsigned int pcm_running;

	snd_hwdep_t *hwdep;

	struct vx_rmh irq_rmh;	/* RMH used in interrupts */

	unsigned int audio_info; /* see VX_AUDIO_INFO */
	unsigned int audio_ins;
	unsigned int audio_outs;
	struct vx_pipe **playback_pipes;
	struct vx_pipe **capture_pipes;

	/* clock and audio sources */
	unsigned int audio_source;	/* current audio input source */
	unsigned int audio_source_target;
	unsigned int clock_mode;	/* clock mode (VX_CLOCK_MODE_XXX) */
	unsigned int clock_source;	/* current clock source (INTERNAL_QUARTZ or UER_SYNC) */
	unsigned int freq;		/* current frequency */
	unsigned int freq_detected;	/* detected frequency from digital in */
	unsigned int uer_detected;	/* VX_UER_MODE_XXX */
	unsigned int uer_bits;	/* IEC958 status bits */
	struct vx_ibl_info ibl;	/* IBL information */

	/* mixer setting */
	int output_level[VX_MAX_CODECS][2];	/* analog output level */
	int audio_gain[2][4];			/* digital audio level (playback/capture) */
	unsigned char audio_active[4];		/* mute/unmute on digital playback */
	int audio_monitor[4];			/* playback hw-monitor level */
	unsigned char audio_monitor_active[4];	/* playback hw-monitor mute/unmute */

	struct semaphore mixer_mutex;
};


/*
 * constructor
 */
vx_core_t *snd_vx_create(snd_card_t *card, struct snd_vx_hardware *hw,
			 struct snd_vx_ops *ops, int extra_size);
int snd_vx_hwdep_new(vx_core_t *chip);
int snd_vx_load_boot_image(vx_core_t *chip, const snd_hwdep_dsp_image_t *boot);
int snd_vx_dsp_boot(vx_core_t *chip, const snd_hwdep_dsp_image_t *boot);
int snd_vx_dsp_load(vx_core_t *chip, const snd_hwdep_dsp_image_t *dsp);

/*
 * interrupt handler; exported for pcmcia
 */
irqreturn_t snd_vx_irq_handler(int irq, void *dev, struct pt_regs *regs);

/*
 * power-management routines
 */
#ifdef CONFIG_PM
void snd_vx_suspend(vx_core_t *chip);
void snd_vx_resume(vx_core_t *chip);
#endif


/*
 * lowlevel functions
 */
inline static int vx_test_and_ack(vx_core_t *chip)
{
	snd_assert(chip->ops->test_and_ack, return -ENXIO);
	return chip->ops->test_and_ack(chip);
}

inline static void vx_validate_irq(vx_core_t *chip, int enable)
{
	snd_assert(chip->ops->validate_irq, return);
	chip->ops->validate_irq(chip, enable);
}

inline static unsigned char snd_vx_inb(vx_core_t *chip, int reg)
{
	snd_assert(chip->ops->in8, return 0);
	return chip->ops->in8(chip, reg);
}

inline static unsigned int snd_vx_inl(vx_core_t *chip, int reg)
{
	snd_assert(chip->ops->in32, return 0);
	return chip->ops->in32(chip, reg);
}

inline static void snd_vx_outb(vx_core_t *chip, int reg, unsigned char val)
{
	snd_assert(chip->ops->out8, return);
	chip->ops->out8(chip, reg, val);
}

inline static void snd_vx_outl(vx_core_t *chip, int reg, unsigned int val)
{
	snd_assert(chip->ops->out32, return);
	chip->ops->out32(chip, reg, val);
}

#define vx_inb(chip,reg)	snd_vx_inb(chip, VX_##reg)
#define vx_outb(chip,reg,val)	snd_vx_outb(chip, VX_##reg,val)
#define vx_inl(chip,reg)	snd_vx_inl(chip, VX_##reg)
#define vx_outl(chip,reg,val)	snd_vx_outl(chip, VX_##reg,val)

void snd_vx_delay(vx_core_t *chip, int msec);

static inline void vx_reset_dsp(vx_core_t *chip)
{
	snd_assert(chip->ops->reset_dsp, return);
	chip->ops->reset_dsp(chip);
}

int vx_send_msg(vx_core_t *chip, struct vx_rmh *rmh);