path: root/sound/pci/atiixp.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *   ALSA driver for ATI IXP 150/200/250/300 AC97 controllers
 *
 *	Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
 */

#include <linux/io.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/info.h>
#include <sound/ac97_codec.h>
#include <sound/initval.h>

MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
MODULE_DESCRIPTION("ATI IXP AC97 controller");
MODULE_LICENSE("GPL");

static int index = SNDRV_DEFAULT_IDX1;	/* Index 0-MAX */
static char *id = SNDRV_DEFAULT_STR1;	/* ID for this card */
static int ac97_clock = 48000;
static char *ac97_quirk;
static bool spdif_aclink = 1;
static int ac97_codec = -1;

module_param(index, int, 0444);
MODULE_PARM_DESC(index, "Index value for ATI IXP controller.");
module_param(id, charp, 0444);
MODULE_PARM_DESC(id, "ID string for ATI IXP controller.");
module_param(ac97_clock, int, 0444);
MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
module_param(ac97_quirk, charp, 0444);
MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
module_param(ac97_codec, int, 0444);
MODULE_PARM_DESC(ac97_codec, "Specify codec instead of probing.");
module_param(spdif_aclink, bool, 0444);
MODULE_PARM_DESC(spdif_aclink, "S/PDIF over AC-link.");

/* just for backward compatibility */
static bool enable;
module_param(enable, bool, 0444);


/*
 */

#define ATI_REG_ISR			0x00	/* interrupt source */
#define  ATI_REG_ISR_IN_XRUN		(1U<<0)
#define  ATI_REG_ISR_IN_STATUS		(1U<<1)
#define  ATI_REG_ISR_OUT_XRUN		(1U<<2)
#define  ATI_REG_ISR_OUT_STATUS		(1U<<3)
#define  ATI_REG_ISR_SPDF_XRUN		(1U<<4)
#define  ATI_REG_ISR_SPDF_STATUS	(1U<<5)
#define  ATI_REG_ISR_PHYS_INTR		(1U<<8)
#define  ATI_REG_ISR_PHYS_MISMATCH	(1U<<9)
#define  ATI_REG_ISR_CODEC0_NOT_READY	(1U<<10)
#define  ATI_REG_ISR_CODEC1_NOT_READY	(1U<<11)
#define  ATI_REG_ISR_CODEC2_NOT_READY	(1U<<12)
#define  ATI_REG_ISR_NEW_FRAME		(1U<<13)

#define ATI_REG_IER			0x04	/* interrupt enable */
#define  ATI_REG_IER_IN_XRUN_EN		(1U<<0)
#define  ATI_REG_IER_IO_STATUS_EN	(1U<<1)
#define  ATI_REG_IER_OUT_XRUN_EN	(1U<<2)
#define  ATI_REG_IER_OUT_XRUN_COND	(1U<<3)
#define  ATI_REG_IER_SPDF_XRUN_EN	(1U<<4)
#define  ATI_REG_IER_SPDF_STATUS_EN	(1U<<5)
#define  ATI_REG_IER_PHYS_INTR_EN	(1U<<8)
#define  ATI_REG_IER_PHYS_MISMATCH_EN	(1U<<9)
#define  ATI_REG_IER_CODEC0_INTR_EN	(1U<<10)
#define  ATI_REG_IER_CODEC1_INTR_EN	(1U<<11)
#define  ATI_REG_IER_CODEC2_INTR_EN	(1U<<12)
#define  ATI_REG_IER_NEW_FRAME_EN	(1U<<13)	/* (RO */
#define  ATI_REG_IER_SET_BUS_BUSY	(1U<<14)	/* (WO) audio is running */

#define ATI_REG_CMD			0x08	/* command */
#define  ATI_REG_CMD_POWERDOWN		(1U<<0)
#define  ATI_REG_CMD_RECEIVE_EN		(1U<<1)
#define  ATI_REG_CMD_SEND_EN		(1U<<2)
#define  ATI_REG_CMD_STATUS_MEM		(1U<<3)
#define  ATI_REG_CMD_SPDF_OUT_EN	(1U<<4)
#define  ATI_REG_CMD_SPDF_STATUS_MEM	(1U<<5)
#define  ATI_REG_CMD_SPDF_THRESHOLD	(3U<<6)
#define  ATI_REG_CMD_SPDF_THRESHOLD_SHIFT	6
#define  ATI_REG_CMD_IN_DMA_EN		(1U<<8)
#define  ATI_REG_CMD_OUT_DMA_EN		(1U<<9)
#define  ATI_REG_CMD_SPDF_DMA_EN	(1U<<10)
#define  ATI_REG_CMD_SPDF_OUT_STOPPED	(1U<<11)
#define  ATI_REG_CMD_SPDF_CONFIG_MASK	(7U<<12)
#define   ATI_REG_CMD_SPDF_CONFIG_34	(1U<<12)
#define   ATI_REG_CMD_SPDF_CONFIG_78	(2U<<12)
#define   ATI_REG_CMD_SPDF_CONFIG_69	(3U<<12)
#define   ATI_REG_CMD_SPDF_CONFIG_01	(4U<<12)
#define  ATI_REG_CMD_INTERLEAVE_SPDF	(1U<<16)
#define  ATI_REG_CMD_AUDIO_PRESENT	(1U<<20)
#define  ATI_REG_CMD_INTERLEAVE_IN	(1U<<21)
#define  ATI_REG_CMD_INTERLEAVE_OUT	(1U<<22)
#define  ATI_REG_CMD_LOOPBACK_EN	(1U<<23)
#define  ATI_REG_CMD_PACKED_DIS		(1U<<24)
#define  ATI_REG_CMD_BURST_EN		(1U<<25)
#define  ATI_REG_CMD_PANIC_EN		(1U<<26)
#define  ATI_REG_CMD_MODEM_PRES