Update of /cvsroot/alsa/alsa-driver/pci
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv5550/pci
Modified Files:
Kconfig Makefile
Added Files:
atiixp.c
Log Message:
- added snd-atiixp driver for ATI IXP 150/200/250 chips.
--- NEW FILE: atiixp.c ---
/*
* ALSA driver for ATI IXP 150/200/250 AC97 controllers
*
* Copyright (c) 2004 Takashi Iwai <[EMAIL PROTECTED]>
*
* 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
*
*/
#include <sound/driver.h>
#include <asm/io.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/info.h>
#include <sound/ac97_codec.h>
#define SNDRV_GET_ID
#include <sound/initval.h>
MODULE_AUTHOR("Takashi Iwai <[EMAIL PROTECTED]>");
MODULE_DESCRIPTION("ATI IXP AC97 controller");
MODULE_LICENSE("GPL");
MODULE_CLASSES("{sound}");
MODULE_DEVICES("{{ATI,IXP150,200,250}}");
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
static int ac97_clock[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 48000};
static int spdif_aclink[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
MODULE_PARM(index, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
MODULE_PARM_DESC(index, "Index value for ATI IXP controller.");
MODULE_PARM_SYNTAX(index, SNDRV_INDEX_DESC);
MODULE_PARM(id, "1-" __MODULE_STRING(SNDRV_CARDS) "s");
MODULE_PARM_DESC(id, "ID string for ATI IXP controller.");
MODULE_PARM_SYNTAX(id, SNDRV_ID_DESC);
MODULE_PARM(enable, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
MODULE_PARM_DESC(enable, "Enable audio part of ATI IXP controller.");
MODULE_PARM_SYNTAX(enable, SNDRV_ENABLE_DESC);
MODULE_PARM(ac97_clock, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
MODULE_PARM_SYNTAX(ac97_clock, SNDRV_ENABLED ",default:48000");
MODULE_PARM(spdif_aclink, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
MODULE_PARM_DESC(spdif_aclink, "S/PDIF over AC-link.");
MODULE_PARM_SYNTAX(spdif_aclink, SNDRV_ENABLED "," SNDRV_BOOLEAN_TRUE_DESC);
/*
*/
#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_PRESENT (1U<<27)
#define ATI_REG_CMD_ACLINK_ACTIVE (1U<<28)
#define ATI_REG_CMD_AC_SOFT_RESET (1U<<29)
#define ATI_REG_CMD_AC_SYNC (1U<<30)
#define ATI_REG_CMD_AC_RESET (1U<<31)
#define ATI_REG_PHYS_OUT_ADDR 0x0c
#define ATI_REG_PHYS_OUT_CODEC_MASK (3U<<0)
#define ATI_REG_PHYS_OUT_RW (1U<<2)
#define ATI_REG_PHYS_OUT_ADDR_EN (1U<<8)
#define ATI_REG_PHYS_OUT_ADDR_SHIFT 9
#define ATI_REG_PHYS_OUT_DATA_SHIFT 16
#define ATI_REG_PHYS_IN_ADDR 0x10
#define ATI_REG_PHYS_IN_READ_FLAG (1U<<8)
#define ATI_REG_PHYS_IN_ADDR_SHIFT 9
#define ATI_REG_PHYS_IN_DATA_SHIFT 16
#define ATI_REG_SLOTREQ 0x14
#define ATI_REG_COUNTER 0x18
#define ATI_REG_COUNTER_SLOT (3U<<0) /* slot # */
#define ATI_REG_COUNTER_BITCLOCK (31U<<8)
#define ATI_REG_IN_FIFO_THRESHOLD 0x1c
#define ATI_REG_IN_DMA_LINKPTR 0x20
#define ATI_REG_IN_DMA_DT_START 0x24 /* RO */
#define ATI_REG_IN_DMA_DT_NEXT 0x28 /* RO */
#define ATI_REG_IN_DMA_DT_CUR 0x2c /* RO */
#define ATI_REG_IN_DMA_DT_SIZE 0x30
#define ATI_REG_OUT_DMA_SLOT 0x34
#define ATI_REG_OUT_DMA_SLOT_BIT(x) (1U << ((x) - 3))
#define ATI_REG_OUT_DMA_SLOT_MASK 0x1ff
#define ATI_REG_OUT_DMA_THRESHOLD_MASK 0xf800
#define ATI_REG_OUT_DMA_THRESHOLD_SHIFT 11
#define ATI_REG_OUT_DMA_LINKPTR 0x38
#define ATI_REG_OUT_DMA_DT_START 0x3c /* RO */
#define ATI_REG_OUT_DMA_DT_NEXT 0x40 /* RO */
#define ATI_REG_OUT_DMA_DT_CUR 0x44 /* RO */
#define ATI_REG_OUT_DMA_DT_SIZE 0x48
#define ATI_REG_SPDF_CMD 0x4c
#define ATI_REG_SPDF_CMD_LFSR (1U<<4)
#define ATI_REG_SPDF_CMD_SINGLE_CH (1U<<5)
#define ATI_REG_SPDF_CMD_LFSR_ACC (0xff<<8) /* RO */
#define ATI_REG_SPDF_DMA_LINKPTR 0x50
#define ATI_REG_SPDF_DMA_DT_START 0x54 /* RO */
#define ATI_REG_SPDF_DMA_DT_NEXT 0x58 /* RO */
#define ATI_REG_SPDF_DMA_DT_CUR 0x5c /* RO */
#define ATI_REG_SPDF_DMA_DT_SIZE 0x60
#define ATI_REG_MODEM_MIRROR 0x7c
#define ATI_REG_AUDIO_MIRROR 0x80
#define ATI_REG_6CH_REORDER 0x84 /* reorder slots for 6ch */
#define ATI_REG_6CH_REORDER_EN (1U<<0) /* 3,4,7,8,6,9 -> 3,4,6,9,7,8 */
#define ATI_REG_FIFO_FLUSH 0x88
#define ATI_REG_FIFO_OUT_FLUSH (1U<<0)
#define ATI_REG_FIFO_IN_FLUSH (1U<<1)
/* LINKPTR */
#define ATI_REG_LINKPTR_EN (1U<<0)
/* [INT|OUT|SPDIF]_DMA_DT_SIZE */
#define ATI_REG_DMA_DT_SIZE (0xffffU<<0)
#define ATI_REG_DMA_FIFO_USED (0x1fU<<16)
#define ATI_REG_DMA_FIFO_FREE (0x1fU<<21)
#define ATI_REG_DMA_STATE (7U<<26)
#define ATI_MEM_REGION 256 /* i/o memory size */
#define ATI_MAX_DESCRIPTORS 256 /* max number of descriptor packets */
/*
*/
typedef struct snd_atiixp atiixp_t;
typedef struct snd_atiixp_dma atiixp_dma_t;
typedef struct snd_atiixp_dma_ops atiixp_dma_ops_t;
#define chip_t atiixp_t
/*
* DMA packate descriptor
*/
typedef struct atiixp_dma_desc {
u32 addr; /* DMA buffer address */
u16 status; /* status bits */
u16 size; /* size of the packet in dwords */
u32 next; /* address of the next packet descriptor */
} atiixp_dma_desc_t;
/*
* stream enum
*/
enum { ATI_DMA_PLAYBACK, ATI_DMA_CAPTURE, ATI_DMA_SPDIF };
/*
* constants and callbacks for each DMA type
*/
struct snd_atiixp_dma_ops {
int type; /* ATI_DMA_XXX */
unsigned int llp_offset; /* LINKPTR offset */
void (*enable_dma)(atiixp_t *chip, int on); /* called from open callback */
void (*enable_transfer)(atiixp_t *chip, int on); /* called from trigger
(START/STOP) */
void (*flush_dma)(atiixp_t *chip); /* called from trigger (STOP
only) */
};
/*
* DMA stream
*/
struct snd_atiixp_dma {
const atiixp_dma_ops_t *ops;
atiixp_dma_desc_t *desc; /* packets buffer */
dma_addr_t desc_addr; /* physical address of packets buffer */
snd_pcm_substream_t *substream; /* assigned PCM substream */
unsigned int buf_addr, buf_bytes; /* DMA buffer address, bytes */
unsigned int period_bytes, periods;
int running;
struct ac97_pcm *pcm;
int pcm_open_flag;
};
/*
* ATI IXP chip
*/
struct snd_atiixp {
snd_card_t *card;
struct pci_dev *pci;
struct resource *res; /* memory i/o */
unsigned long addr;
unsigned long remap_addr;
int irq;
ac97_bus_t *ac97_bus;
ac97_t *ac97[3]; /* IXP can have up to 3 codecs */
spinlock_t reg_lock;
spinlock_t ac97_lock;
atiixp_dma_t dmas[3]; /* playback, capture, spdif */
int max_channels; /* max. channels for PCM out */
unsigned int codec_not_ready_bits; /* for codec detection */
int spdif_over_aclink; /* passed from the module option */
};
/*
*/
static struct pci_device_id snd_atiixp_ids[] = {
{ 0x1002, 0x4341, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
};
MODULE_DEVICE_TABLE(pci, snd_atiixp_ids);
/*
* lowlevel functions
*/
/*
* update the bits of the given register.
* return 1 if the bits changed.
*/
static int snd_atiixp_update_bits(atiixp_t *chip, unsigned int reg,
unsigned int mask, unsigned int value)
{
unsigned long addr = chip->remap_addr + reg;
unsigned int data, old_data;
old_data = data = readl(addr);
data &= ~mask;
data |= value;
if (old_data == data)
return 0;
writel(data, addr);
return 1;
}
/*
* macros for easy use
*/
#define atiixp_write(chip,reg,value) \
writel(value, chip->remap_addr + ATI_REG_##reg)
#define atiixp_read(chip,reg) \
readl(chip->remap_addr + ATI_REG_##reg)
#define atiixp_update(chip,reg,mask,val) \
snd_atiixp_update_bits(chip, ATI_REG_##reg, mask, val)
/* delay for one tick */
#define do_delay() do { \
set_current_state(TASK_UNINTERRUPTIBLE); \
schedule_timeout(1); \
} while (0)
/*
* handling DMA packets
*
* we allocate a linear buffer for the DMA, and split it to each packet.
* in a future version, a scatter-gather buffer should be implemented.
*/
#define ATI_DESC_LIST_SIZE \
PAGE_ALIGN(ATI_MAX_DESCRIPTORS * sizeof(atiixp_dma_desc_t))
/*
* build packets ring for the given buffer size.
*
* IXP handles the buffer descriptors, which are connected as a linked
* list. although we can change the list dynamically, in this version,
* a static RING of buffer descriptors is used.
*
* the ring is built in this function, and is set up to the hardware.
*/
static int atiixp_build_dma_packets(atiixp_t *chip, atiixp_dma_t *dma,
snd_pcm_substream_t *substream,
unsigned int periods,
unsigned int period_bytes)
{
unsigned int i;
u32 addr, desc_addr;
unsigned long flags;
if (periods > ATI_MAX_DESCRIPTORS)
return -ENOMEM;
if (! dma->desc) {
dma->desc = snd_malloc_pci_pages(chip->pci, ATI_DESC_LIST_SIZE,
&dma->desc_addr);
if (! dma->desc)
return -ENOMEM;
dma->period_bytes = dma->periods = 0; /* clear */
}
if (dma->periods == dma->periods && dma->period_bytes == period_bytes)
return 0;
/* reset DMA before changing the descriptor table */
spin_lock_irqsave(&chip->reg_lock, flags);
writel(0, chip->remap_addr + dma->ops->llp_offset);
dma->ops->enable_dma(chip, 0);
dma->ops->enable_dma(chip, 1);
spin_unlock_irqrestore(&chip->reg_lock, flags);
/* fill the entries */
addr = (u32)substream->runtime->dma_addr;
desc_addr = (u32)dma->desc_addr;
for (i = 0; i < periods; i++) {
dma->desc[i].addr = cpu_to_le32(addr);
dma->desc[i].status = 0;
dma->desc[i].size = period_bytes >> 2; /* in dwords */
desc_addr += sizeof(atiixp_dma_desc_t);
if (i == periods - 1)
dma->desc[i].next = cpu_to_le32((u32)dma->desc_addr);
else
dma->desc[i].next = cpu_to_le32(desc_addr);
addr += period_bytes;
}
writel(cpu_to_le32((u32)dma->desc_addr | ATI_REG_LINKPTR_EN),
chip->remap_addr + dma->ops->llp_offset);
dma->period_bytes = period_bytes;
dma->periods = periods;
return 0;
}
/*
* remove the ring buffer and release it if assigned
*/
static void atiixp_clear_dma_packets(atiixp_t *chip, atiixp_dma_t *dma,
snd_pcm_substream_t *substream)
{
if (dma->desc) {
writel(0, chip->remap_addr + dma->ops->llp_offset);
snd_free_pci_pages(chip->pci, ATI_DESC_LIST_SIZE, dma->desc,
dma->desc_addr);
dma->desc = NULL;
}
}
/*
* AC97 interface
*/
static int snd_atiixp_acquire_codec(atiixp_t *chip)
{
int timeout = 1000;
while (atiixp_read(chip, PHYS_OUT_ADDR) & ATI_REG_PHYS_OUT_ADDR_EN) {
if (! timeout--) {
snd_printk(KERN_WARNING "atiixp: codec acquire timeout\n");
return -EBUSY;
}
udelay(1);
}
return 0;
}
static unsigned short snd_atiixp_codec_read(atiixp_t *chip, unsigned short codec,
unsigned short reg)
{
unsigned int data;
int timeout;
if (snd_atiixp_acquire_codec(chip) < 0)
return 0xffff;
data = (reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) |
ATI_REG_PHYS_OUT_ADDR_EN |
ATI_REG_PHYS_OUT_RW |
codec;
atiixp_write(chip, PHYS_OUT_ADDR, data);
if (snd_atiixp_acquire_codec(chip) < 0)
return 0xffff;
timeout = 1000;
do {
data = atiixp_read(chip, PHYS_IN_ADDR);
if (data & ATI_REG_PHYS_IN_READ_FLAG)
return data >> ATI_REG_PHYS_IN_DATA_SHIFT;
udelay(1);
} while (--timeout);
snd_printk(KERN_WARNING "atiixp: codec read timeout\n");
return 0xffff;
}
static void snd_atiixp_codec_write(atiixp_t *chip, unsigned short codec, unsigned
short reg, unsigned short val)
{
unsigned int data;
if (snd_atiixp_acquire_codec(chip) < 0)
return;
data = ((unsigned int)val << ATI_REG_PHYS_OUT_DATA_SHIFT) |
((unsigned int)reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) |
ATI_REG_PHYS_OUT_ADDR_EN | codec;
atiixp_write(chip, PHYS_OUT_ADDR, data);
}
static unsigned short snd_atiixp_ac97_read(ac97_t *ac97, unsigned short reg)
{
atiixp_t *chip = snd_magic_cast(atiixp_t, ac97->private_data, return 0xffff);
unsigned short data;
spin_lock(&chip->ac97_lock);
data = snd_atiixp_codec_read(chip, ac97->num, reg);
spin_unlock(&chip->ac97_lock);
return data;
}
static void snd_atiixp_ac97_write(ac97_t *ac97, unsigned short reg, unsigned short val)
{
atiixp_t *chip = snd_magic_cast(atiixp_t, ac97->private_data, return);
spin_lock(&chip->ac97_lock);
snd_atiixp_codec_write(chip, ac97->num, reg, val);
spin_unlock(&chip->ac97_lock);
}
/*
* reset AC link
*/
static int snd_atiixp_aclink_reset(atiixp_t *chip)
{
int timeout;
/* reset powerdoewn */
if (atiixp_update(chip, CMD, ATI_REG_CMD_POWERDOWN, 0))
udelay(10);
/* perform a software reset */
atiixp_update(chip, CMD, ATI_REG_CMD_AC_SOFT_RESET, ATI_REG_CMD_AC_SOFT_RESET);
atiixp_read(chip, CMD);
udelay(10);
atiixp_update(chip, CMD, ATI_REG_CMD_AC_SOFT_RESET, 0);
timeout = 10;
while (! (atiixp_read(chip, CMD) & ATI_REG_CMD_ACLINK_ACTIVE)) {
/* do a hard reset */
atiixp_update(chip, CMD, ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET,
ATI_REG_CMD_AC_SYNC);
atiixp_read(chip, CMD);
do_delay();
atiixp_update(chip, CMD, ATI_REG_CMD_AC_RESET, ATI_REG_CMD_AC_RESET);
if (--timeout) {
snd_printk(KERN_ERR "atiixp: codec reset timeout\n");
break;
}
}
/* deassert RESET and assert SYNC to make sure */
atiixp_update(chip, CMD, ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET,
ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET);
return 0;
}
#if 0 /* for P/M */
static int snd_atiixp_aclink_down(atiixp_t *chip)
{
unsigned long flags;
if (atiixp_read(chip, MODEM_MIRROR) & ATI_REG_MODEM_MIRROR_RUNNING)
return -EBUSY;
atiixp_update(chip, CMD,
ATI_REG_CMD_POWERDOWN | ATI_REG_CMD_AC_RESET,
ATI_REG_CMD_POWERDOWN);
return 0;
}
#endif
/*
* auto-detection of codecs
*
* the IXP chip can generate interrupts for the non-existing codecs.
* NEW_FRAME interrupt is used to make sure that the interrupt is generated
* even if all three codecs are connected.
*/
#define ALL_CODEC_NOT_READY \
(ATI_REG_ISR_CODEC0_NOT_READY |\
ATI_REG_ISR_CODEC1_NOT_READY |\
ATI_REG_ISR_CODEC2_NOT_READY)
#define CODEC_CHECK_BITS (ALL_CODEC_NOT_READY|ATI_REG_ISR_NEW_FRAME)
static int snd_atiixp_codec_detect(atiixp_t *chip)
{
int timeout;
chip->codec_not_ready_bits = 0;
atiixp_write(chip, IER, CODEC_CHECK_BITS);
/* wait for the interrupts */
timeout = HZ / 10;
while (timeout-- > 0) {
do_delay();
if (chip->codec_not_ready_bits)
break;
}
atiixp_write(chip, IER, 0); /* disable irqs */
if ((chip->codec_not_ready_bits & ALL_CODEC_NOT_READY) == ALL_CODEC_NOT_READY)
{
snd_printk(KERN_ERR "atiixp: no codec detected!\n");
return -ENXIO;
}
return 0;
}
/*
* enable DMA and irqs
*/
static int snd_atiixp_chip_start(atiixp_t *chip)
{
unsigned int reg;
/* enable burst mode */
reg = atiixp_read(chip, CMD);
reg |= 0x02 << ATI_REG_CMD_SPDF_THRESHOLD_SHIFT;
reg |= ATI_REG_CMD_BURST_EN;
atiixp_write(chip, CMD, reg);
/* clear all interrupt source */
atiixp_write(chip, ISR, 0xffffffff);
/* enable irqs */
atiixp_write(chip, IER,
ATI_REG_IER_IO_STATUS_EN |
ATI_REG_IER_IN_XRUN_EN |
ATI_REG_IER_OUT_XRUN_EN |
ATI_REG_IER_SPDF_XRUN_EN |
ATI_REG_IER_SPDF_STATUS_EN);
return 0;
}
/*
* disable DMA and IRQs
*/
static int snd_atiixp_chip_stop(atiixp_t *chip)
{
/* clear interrupt source */
atiixp_write(chip, ISR, atiixp_read(chip, ISR));
/* disable irqs */
atiixp_write(chip, IER, 0);
return 0;
}
/*
* PCM section
*/
/*
* pointer callback simplly reads XXX_DMA_DT_CUR register as the current
* position. when SG-buffer is implemented, the offset must be calculated
* correctly...
*/
static snd_pcm_uframes_t snd_atiixp_pcm_pointer(snd_pcm_substream_t *substream)
{
atiixp_t *chip = snd_pcm_substream_chip(substream);
snd_pcm_runtime_t *runtime = substream->runtime;
atiixp_dma_t *dma = (atiixp_dma_t *)runtime->private_data;
unsigned int curptr;
unsigned long flags;
spin_lock_irqsave(&chip->reg_lock, flags);
curptr = readl(chip->remap_addr + dma->ops->llp_offset + 12); /*
XXX_DMA_DT_CUR */
if (curptr < dma->buf_addr) {
snd_printdd("curptr = %x, base = %x\n", curptr, dma->buf_addr);
curptr = 0;
} else {
curptr -= dma->buf_addr;
if (curptr >= dma->buf_bytes) {
snd_printdd("curptr = %x, size = %x\n", curptr,
dma->buf_bytes);
curptr = 0;
}
}
spin_unlock_irqrestore(&chip->reg_lock, flags);
return bytes_to_frames(runtime, curptr);
}
/*
* XRUN detected, and stop the PCM substream
*/
static void snd_atiixp_xrun_dma(atiixp_t *chip, atiixp_dma_t *dma)
{
if (! dma->substream || ! dma->running)
return;
snd_printd(KERN_DEBUG "atiixp: XRUN detected (DMA %d)\n", dma->ops->type);
snd_pcm_stop(dma->substream, SNDRV_PCM_STATE_XRUN);
}
/*
* the period ack. update the substream.
*/
static void snd_atiixp_update_dma(atiixp_t *chip, atiixp_dma_t *dma)
{
if (! dma->substream || ! dma->running)
return;
snd_pcm_period_elapsed(dma->substream);
}
/* set BUS_BUSY interrupt bit if any DMA is running */
/* call with spinlock held */
static void snd_atiixp_check_bus_busy(atiixp_t *chip)
{
unsigned int bus_busy;
if (atiixp_read(chip, CMD) & (ATI_REG_CMD_SEND_EN |
ATI_REG_CMD_RECEIVE_EN |
ATI_REG_CMD_SPDF_OUT_EN))
bus_busy = ATI_REG_IER_SET_BUS_BUSY;
else
bus_busy = 0;
atiixp_update(chip, IER, ATI_REG_IER_SET_BUS_BUSY, bus_busy);
}
/* common trigger callback
* calling the lowlevel callbacks in it
*/
static int snd_atiixp_pcm_trigger(snd_pcm_substream_t *substream, int cmd)
{
atiixp_t *chip = snd_pcm_substream_chip(substream);
atiixp_dma_t *dma = (atiixp_dma_t *)substream->runtime->private_data;
int err = 0;
snd_assert(dma->ops->enable_transfer && dma->ops->flush_dma, return -EINVAL);
spin_lock(&chip->reg_lock);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
dma->ops->enable_transfer(chip, 1);
dma->running = 1;
break;
case SNDRV_PCM_TRIGGER_STOP:
dma->ops->enable_transfer(chip, 0);
dma->running = 0;
break;
default:
err = -EINVAL;
break;
}
if (! err) {
snd_atiixp_check_bus_busy(chip);
if (cmd == SNDRV_PCM_TRIGGER_STOP) {
dma->ops->flush_dma(chip);
snd_atiixp_check_bus_busy(chip);
}
}
spin_unlock(&chip->reg_lock);
return err;
}
/*
* lowlevel callbacks for each DMA type
*
* every callback is supposed to be called in chip->reg_lock spinlock
*/
/* flush FIFO of analog OUT DMA */
static void atiixp_out_flush_dma(atiixp_t *chip)
{
atiixp_write(chip, FIFO_FLUSH, ATI_REG_FIFO_OUT_FLUSH);
}
/* enable/disable analog OUT DMA */
static void atiixp_out_enable_dma(atiixp_t *chip, int on)
{
unsigned int data;
data = atiixp_read(chip, CMD);
if (on) {
if (data & ATI_REG_CMD_OUT_DMA_EN)
return;
atiixp_out_flush_dma(chip);
data |= ATI_REG_CMD_OUT_DMA_EN;
} else
data &= ~ATI_REG_CMD_OUT_DMA_EN;
atiixp_write(chip, CMD, data);
}
/* start/stop transfer over OUT DMA */
static void atiixp_out_enable_transfer(atiixp_t *chip, int on)
{
atiixp_update(chip, CMD, ATI_REG_CMD_SEND_EN,
on ? ATI_REG_CMD_SEND_EN : 0);
}
/* enable/disable analog IN DMA */
static void atiixp_in_enable_dma(atiixp_t *chip, int on)
{
atiixp_update(chip, CMD, ATI_REG_CMD_IN_DMA_EN,
on ? ATI_REG_CMD_IN_DMA_EN : 0);
}
/* start/stop analog IN DMA */
static void atiixp_in_enable_transfer(atiixp_t *chip, int on)
{
if (on) {
unsigned int data = atiixp_read(chip, CMD);
if (! (data & ATI_REG_CMD_RECEIVE_EN)) {
data |= ATI_REG_CMD_RECEIVE_EN;
#if 0 /* FIXME: this causes the endless loop */
/* wait until slot 3/4 are finished */
while ((atiixp_read(chip, COUNTER) &
ATI_REG_COUNTER_SLOT) != 5)
;
#endif
atiixp_write(chip, CMD, data);
}
} else
atiixp_update(chip, CMD, ATI_REG_CMD_RECEIVE_EN, 0);
}
/* flush FIFO of analog IN DMA */
static void atiixp_in_flush_dma(atiixp_t *chip)
{
atiixp_write(chip, FIFO_FLUSH, ATI_REG_FIFO_IN_FLUSH);
}
/* enable/disable SPDIF OUT DMA */
static void atiixp_spdif_enable_dma(atiixp_t *chip, int on)
{
atiixp_update(chip, CMD, ATI_REG_CMD_SPDF_DMA_EN,
on ? ATI_REG_CMD_SPDF_DMA_EN : 0);
}
/* start/stop SPDIF OUT DMA */
static void atiixp_spdif_enable_transfer(atiixp_t *chip, int on)
{
unsigned int data;
data = atiixp_read(chip, CMD);
if (on) {
data |= ATI_REG_CMD_SPDF_OUT_EN;
if (chip->spdif_over_aclink)
data |= ATI_REG_CMD_SEND_EN;
} else {
data &= ~ATI_REG_CMD_SPDF_OUT_EN;
if (chip->spdif_over_aclink)
data &= ~ATI_REG_CMD_SEND_EN;
}
atiixp_write(chip, CMD, data);
}
/* flush FIFO of SPDIF OUT DMA */
static void atiixp_spdif_flush_dma(atiixp_t *chip)
{
int timeout;
/* DMA off, transfer on */
atiixp_spdif_enable_dma(chip, 0);
atiixp_spdif_enable_transfer(chip, 1);
timeout = 100;
do {
if (! (atiixp_read(chip, SPDF_DMA_DT_SIZE) & ATI_REG_DMA_FIFO_USED))
break;
udelay(1);
} while (timeout-- > 0);
atiixp_spdif_enable_transfer(chip, 0);
}
/* set up slots and formats for SPDIF OUT */
static int snd_atiixp_spdif_prepare(snd_pcm_substream_t *substream)
{
atiixp_t *chip = snd_pcm_substream_chip(substream);
unsigned int data;
spin_lock(&chip->reg_lock);
if (chip->spdif_over_aclink) {
/* enable slots 10/11 */
atiixp_update(chip, CMD, ATI_REG_CMD_SPDF_CONFIG_MASK,
ATI_REG_CMD_SPDF_CONFIG_01);
data = atiixp_read(chip, OUT_DMA_SLOT);
data |= ATI_REG_OUT_DMA_SLOT_BIT(10) |
ATI_REG_OUT_DMA_SLOT_BIT(11);
data |= 0x04 << ATI_REG_OUT_DMA_THRESHOLD_SHIFT;
atiixp_write(chip, OUT_DMA_SLOT, data);
} else {
atiixp_update(chip, CMD, ATI_REG_CMD_SPDF_CONFIG_MASK, 0);
}
atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_SPDF,
substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE ?
ATI_REG_CMD_INTERLEAVE_SPDF : 0);
spin_unlock(&chip->reg_lock);
return 0;
}
/* set up slots and formats for analog OUT */
static int snd_atiixp_playback_prepare(snd_pcm_substream_t *substream)
{
atiixp_t *chip = snd_pcm_substream_chip(substream);
unsigned int data;
spin_lock(&chip->reg_lock);
data = atiixp_read(chip, OUT_DMA_SLOT) & ~ATI_REG_OUT_DMA_SLOT_MASK;
switch (substream->runtime->channels) {
case 8:
data |= ATI_REG_OUT_DMA_SLOT_BIT(10) |
ATI_REG_OUT_DMA_SLOT_BIT(11);
/* fallthru */
case 6:
data |= ATI_REG_OUT_DMA_SLOT_BIT(7) |
ATI_REG_OUT_DMA_SLOT_BIT(8);
/* fallthru */
case 4:
data |= ATI_REG_OUT_DMA_SLOT_BIT(6) |
ATI_REG_OUT_DMA_SLOT_BIT(9);
/* fallthru */
default:
data |= ATI_REG_OUT_DMA_SLOT_BIT(3) |
ATI_REG_OUT_DMA_SLOT_BIT(4);
break;
}
/* set output threshold */
data |= 0x04 << ATI_REG_OUT_DMA_THRESHOLD_SHIFT;
atiixp_write(chip, OUT_DMA_SLOT, data);
atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_OUT,
substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE ?
ATI_REG_CMD_INTERLEAVE_OUT : 0);
/*
* enable 6 channel re-ordering bit if needed
*/
atiixp_update(chip, 6CH_REORDER, ATI_REG_6CH_REORDER_EN,
substream->runtime->channels >= 6 ? ATI_REG_6CH_REORDER_EN: 0);
spin_unlock(&chip->reg_lock);
return 0;
}
/* set up slots and formats for analog IN */
static int snd_atiixp_capture_prepare(snd_pcm_substream_t *substream)
{
atiixp_t *chip = snd_pcm_substream_chip(substream);
spin_lock(&chip->reg_lock);
atiixp_update(chip, CMD, ATI_REG_CMD_INTERLEAVE_IN,
substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE ?
ATI_REG_CMD_INTERLEAVE_IN : 0);
spin_unlock(&chip->reg_lock);
return 0;
}
/*
* hw_params - allocate the buffer and set up buffer descriptors
*/
static int snd_atiixp_pcm_hw_params(snd_pcm_substream_t *substream,
snd_pcm_hw_params_t *hw_params)
{
atiixp_t *chip = snd_pcm_substream_chip(substream);
atiixp_dma_t *dma = (atiixp_dma_t *)substream->runtime->private_data;
int err;
err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
if (err < 0)
return err;
dma->buf_addr = substream->runtime->dma_addr;
dma->buf_bytes = params_buffer_bytes(hw_params);
err = atiixp_build_dma_packets(chip, dma, substream,
params_periods(hw_params),
params_period_bytes(hw_params));
if (err < 0)
return err;
if (dma->pcm) {
/* PCM is bound to AC97 codec(s)
* set up the AC97 codecs
*/
if (dma->pcm_open_flag) {
snd_ac97_pcm_close(dma->pcm);
dma->pcm_open_flag = 0;
}
err = snd_ac97_pcm_open(dma->pcm, params_rate(hw_params),
params_channels(hw_params),
dma->pcm->r[0].slots);
if (err >= 0)
dma->pcm_open_flag = 1;
}
return err;
}
static int snd_atiixp_pcm_hw_free(snd_pcm_substream_t * substream)
{
atiixp_t *chip = snd_pcm_substream_chip(substream);
atiixp_dma_t *dma = (atiixp_dma_t *)substream->runtime->private_data;
if (dma->pcm_open_flag) {
snd_ac97_pcm_close(dma->pcm);
dma->pcm_open_flag = 0;
}
atiixp_clear_dma_packets(chip, dma, substream);
snd_pcm_lib_free_pages(substream);
return 0;
}
/*
* pcm hardware definition, identical for all DMA types
*/
static snd_pcm_hardware_t snd_atiixp_pcm_hw =
{
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_MMAP_VALID),
.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
.rates = SNDRV_PCM_RATE_48000,
.rate_min = 48000,
.rate_max = 48000,
.channels_min = 2,
.channels_max = 2,
.buffer_bytes_max = 256 * 1024,
.period_bytes_min = 32,
.period_bytes_max = 128 * 1024,
.periods_min = 2,
.periods_max = ATI_MAX_DESCRIPTORS,
};
static int snd_atiixp_pcm_open(snd_pcm_substream_t *substream, atiixp_dma_t *dma)
{
atiixp_t *chip = snd_pcm_substream_chip(substream);
snd_pcm_runtime_t *runtime = substream->runtime;
unsigned long flags;
int err;
snd_assert(dma->ops && dma->ops->enable_dma, return -EINVAL);
dma->substream = substream;
runtime->hw = snd_atiixp_pcm_hw;
if (dma->pcm) {
runtime->hw.rates = dma->pcm->rates;
snd_pcm_limit_hw_rates(runtime);
} else {
/* SPDIF */
runtime->hw.rates = SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100 |
SNDRV_PCM_RATE_32000;
runtime->hw.rate_min = 32000;
}
if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS))
< 0)
return err;
runtime->private_data = dma;
/* enable DMA bits */
spin_lock_irqsave(&chip->reg_lock, flags);
dma->ops->enable_dma(chip, 1);
spin_unlock_irqrestore(&chip->reg_lock, flags);
return 0;
}
static int snd_atiixp_pcm_close(snd_pcm_substream_t *substream, atiixp_dma_t *dma)
{
atiixp_t *chip = snd_pcm_substream_chip(substream);
/* disable DMA bits */
snd_assert(dma->ops && dma->ops->enable_dma, return -EINVAL);
spin_lock_irq(&chip->reg_lock);
dma->ops->enable_dma(chip, 0);
spin_unlock_irq(&chip->reg_lock);
dma->substream = NULL;
return 0;
}
/*
*/
static int snd_atiixp_playback_open(snd_pcm_substream_t *substream)
{
atiixp_t *chip = snd_pcm_substream_chip(substream);
int err;
err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_PLAYBACK]);
substream->runtime->hw.channels_max = chip->max_channels;
if (chip->max_channels > 2)
/* channels must be even */
snd_pcm_hw_constraint_step(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_CHANNELS, 2);
return 0;
}
static int snd_atiixp_playback_close(snd_pcm_substream_t *substream)
{
atiixp_t *chip = snd_pcm_substream_chip(substream);
return snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_PLAYBACK]);
}
static int snd_atiixp_capture_open(snd_pcm_substream_t *substream)
{
atiixp_t *chip = snd_pcm_substream_chip(substream);
return snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_CAPTURE]);
}
static int snd_atiixp_capture_close(snd_pcm_substream_t *substream)
{
atiixp_t *chip = snd_pcm_substream_chip(substream);
return snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_CAPTURE]);
}
static int snd_atiixp_spdif_open(snd_pcm_substream_t *substream)
{
atiixp_t *chip = snd_pcm_substream_chip(substream);
return snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_SPDIF]);
}
static int snd_atiixp_spdif_close(snd_pcm_substream_t *substream)
{
atiixp_t *chip = snd_pcm_substream_chip(substream);
return snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_SPDIF]);
}
/* AC97 playback */
static snd_pcm_ops_t snd_atiixp_playback_ops = {
.open = snd_atiixp_playback_open,
.close = snd_atiixp_playback_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_atiixp_pcm_hw_params,
.hw_free = snd_atiixp_pcm_hw_free,
.prepare = snd_atiixp_playback_prepare,
.trigger = snd_atiixp_pcm_trigger,
.pointer = snd_atiixp_pcm_pointer,
};
/* AC97 capture */
static snd_pcm_ops_t snd_atiixp_capture_ops = {
.open = snd_atiixp_capture_open,
.close = snd_atiixp_capture_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_atiixp_pcm_hw_params,
.hw_free = snd_atiixp_pcm_hw_free,
.prepare = snd_atiixp_capture_prepare,
.trigger = snd_atiixp_pcm_trigger,
.pointer = snd_atiixp_pcm_pointer,
};
/* SPDIF playback */
static snd_pcm_ops_t snd_atiixp_spdif_ops = {
.open = snd_atiixp_spdif_open,
.close = snd_atiixp_spdif_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_atiixp_pcm_hw_params,
.hw_free = snd_atiixp_pcm_hw_free,
.prepare = snd_atiixp_spdif_prepare,
.trigger = snd_atiixp_pcm_trigger,
.pointer = snd_atiixp_pcm_pointer,
};
static struct ac97_pcm atiixp_pcm_defs[] __devinitdata = {
/* front PCM */
{
.exclusive = 1,
.r = { {
.slots = (1 << AC97_SLOT_PCM_LEFT) |
(1 << AC97_SLOT_PCM_RIGHT) |
(1 << AC97_SLOT_PCM_CENTER) |
(1 << AC97_SLOT_PCM_SLEFT) |
(1 << AC97_SLOT_PCM_SRIGHT) |
(1 << AC97_SLOT_LFE)
}
}
},
/* PCM IN #1 */
{
.stream = 1,
.exclusive = 1,
.r = { {
.slots = (1 << AC97_SLOT_PCM_LEFT) |
(1 << AC97_SLOT_PCM_RIGHT)
}
}
},
/* S/PDIF OUT (optional) */
{
.exclusive = 1,
.spdif = 1,
.r = { {
.slots = (1 << AC97_SLOT_SPDIF_LEFT2) |
(1 << AC97_SLOT_SPDIF_RIGHT2)
}
}
},
};
static atiixp_dma_ops_t snd_atiixp_playback_dma_ops = {
.type = ATI_DMA_PLAYBACK,
.llp_offset = ATI_REG_OUT_DMA_LINKPTR,
.enable_dma = atiixp_out_enable_dma,
.enable_transfer = atiixp_out_enable_transfer,
.flush_dma = atiixp_out_flush_dma,
};
static atiixp_dma_ops_t snd_atiixp_capture_dma_ops = {
.type = ATI_DMA_CAPTURE,
.llp_offset = ATI_REG_IN_DMA_LINKPTR,
.enable_dma = atiixp_in_enable_dma,
.enable_transfer = atiixp_in_enable_transfer,
.flush_dma = atiixp_in_flush_dma,
};
static atiixp_dma_ops_t snd_atiixp_spdif_dma_ops = {
.type = ATI_DMA_SPDIF,
.llp_offset = ATI_REG_SPDF_DMA_LINKPTR,
.enable_dma = atiixp_spdif_enable_dma,
.enable_transfer = atiixp_spdif_enable_transfer,
.flush_dma = atiixp_spdif_flush_dma,
};
static int __devinit snd_atiixp_pcm_new(atiixp_t *chip)
{
snd_pcm_t *pcm;
ac97_bus_t *pbus = chip->ac97_bus;
int err, i, num_pcms;
/* initialize constants */
chip->dmas[ATI_DMA_PLAYBACK].ops = &snd_atiixp_playback_dma_ops;
chip->dmas[ATI_DMA_CAPTURE].ops = &snd_atiixp_capture_dma_ops;
chip->dmas[ATI_DMA_SPDIF].ops = &snd_atiixp_spdif_dma_ops;
/* assign AC97 pcm */
if (chip->spdif_over_aclink)
num_pcms = 3;
else
num_pcms = 2;
err = snd_ac97_pcm_assign(pbus, num_pcms, atiixp_pcm_defs);
if (err < 0)
return err;
chip->max_channels = 2;
if (pbus->pcms[0].r[0].slots & (1 << AC97_SLOT_PCM_SLEFT)) {
if (pbus->pcms[0].r[0].slots & (1 << AC97_SLOT_LFE))
chip->max_channels = 6;
else
chip->max_channels = 4;
}
chip->dmas[ATI_DMA_PLAYBACK].pcm = &pbus->pcms[0];
chip->dmas[ATI_DMA_CAPTURE].pcm = &pbus->pcms[1];
if (chip->spdif_over_aclink)
chip->dmas[ATI_DMA_SPDIF].pcm = &pbus->pcms[2];
/* PCM #0: analog I/O */
err = snd_pcm_new(chip->card, "ATI IXP AC97", 0, 1, 1, &pcm);
if (err < 0)
return err;
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_atiixp_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_atiixp_capture_ops);
pcm->private_data = chip;
strcpy(pcm->name, "ATI IXP AC97");
snd_pcm_lib_preallocate_pci_pages_for_all(chip->pci, pcm, 64*1024, 128*1024);
/* no SPDIF support on codec? */
if (chip->dmas[ATI_DMA_SPDIF].pcm && ! chip->dmas[ATI_DMA_SPDIF].pcm->rates)
return 0;
/* PCM #1: spdif playback */
err = snd_pcm_new(chip->card, "ATI IXP IEC958", 1, 1, 0, &pcm);
if (err < 0)
return err;
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_atiixp_spdif_ops);
pcm->private_data = chip;
strcpy(pcm->name, "ATI IXP IEC958");
snd_pcm_lib_preallocate_pci_pages_for_all(chip->pci, pcm, 64*1024, 128*1024);
/* pre-select AC97 SPDIF slots 10/11 */
for (i = 0; i < 3; i++) {
if (chip->ac97[i])
snd_ac97_update_bits(chip->ac97[i], AC97_EXTENDED_STATUS, 0x03
<< 4, 0x03 << 4);
}
return 0;
}
/*
* interrupt handler
*/
static irqreturn_t snd_atiixp_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
atiixp_t *chip = snd_magic_cast(atiixp_t, dev_id, return IRQ_NONE);
unsigned int status;
status = atiixp_read(chip, ISR);
if (! status)
return IRQ_NONE;
/* process audio DMA */
if (status & ATI_REG_ISR_OUT_XRUN)
snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]);
else if (status & ATI_REG_ISR_OUT_STATUS)
snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]);
if (status & ATI_REG_ISR_IN_XRUN)
snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]);
else if (status & ATI_REG_ISR_IN_STATUS)
snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]);
if (status & ATI_REG_ISR_SPDF_XRUN)
snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_SPDIF]);
else if (status & ATI_REG_ISR_SPDF_STATUS)
snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_SPDIF]);
/* for codec detection */
if (status & CODEC_CHECK_BITS) {
unsigned int detected;
detected = status & CODEC_CHECK_BITS;
spin_lock(&chip->reg_lock);
chip->codec_not_ready_bits |= detected;
atiixp_update(chip, IER, detected, 0); /* disable the detected irqs */
spin_unlock(&chip->reg_lock);
}
/* ack */
atiixp_write(chip, ISR, status);
return IRQ_HANDLED;
}
/*
* ac97 mixer section
*/
static int __devinit snd_atiixp_mixer_new(atiixp_t *chip, int clock)
{
ac97_bus_t bus, *pbus;
ac97_t ac97;
int i, err;
static unsigned int codec_skip[3] = {
ATI_REG_ISR_CODEC0_NOT_READY,
ATI_REG_ISR_CODEC1_NOT_READY,
ATI_REG_ISR_CODEC2_NOT_READY,
};
if (snd_atiixp_codec_detect(chip) < 0)
return -ENXIO;
memset(&bus, 0, sizeof(bus));
bus.write = snd_atiixp_ac97_write;
bus.read = snd_atiixp_ac97_read;
bus.private_data = chip;
bus.clock = clock;
if ((err = snd_ac97_bus(chip->card, &bus, &pbus)) < 0)
return err;
chip->ac97_bus = pbus;
for (i = 0; i < 3; i++) {
if (chip->codec_not_ready_bits & codec_skip[i])
continue;
memset(&ac97, 0, sizeof(ac97));
ac97.private_data = chip;
ac97.pci = chip->pci;
ac97.num = i;
if ((err = snd_ac97_mixer(pbus, &ac97, &chip->ac97[i])) < 0)
return err;
}
/* snd_ac97_tune_hardware(chip->ac97, ac97_quirks); */
return 0;
}
/*
* proc interface for register dump
*/
static void snd_atiixp_proc_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
{
atiixp_t *chip = snd_magic_cast(atiixp_t, entry->private_data, return);
int i;
for (i = 0; i < 256; i += 4)
snd_iprintf(buffer, "%02x: %08x\n", i, readl(chip->remap_addr + i));
}
static void __devinit snd_atiixp_proc_init(atiixp_t *chip)
{
snd_info_entry_t *entry;
if (! snd_card_proc_new(chip->card, "atiixp", &entry))
snd_info_set_text_ops(entry, chip, 1024, snd_atiixp_proc_read);
}
/*
* destructor
*/
static int snd_atiixp_free(atiixp_t *chip)
{
if (chip->irq < 0)
goto __hw_end;
snd_atiixp_chip_stop(chip);
synchronize_irq(chip->irq);
__hw_end:
if (chip->remap_addr)
iounmap((void *) chip->remap_addr);
if (chip->res) {
release_resource(chip->res);
kfree_nocheck(chip->res);
}
if (chip->irq >= 0)
free_irq(chip->irq, (void *)chip);
snd_magic_kfree(chip);
return 0;
}
static int snd_atiixp_dev_free(snd_device_t *device)
{
atiixp_t *chip = snd_magic_cast(atiixp_t, device->device_data, return -ENXIO);
return snd_atiixp_free(chip);
}
/*
* constructor for chip instance
*/
static int __devinit snd_atiixp_create(snd_card_t *card,
struct pci_dev *pci,
atiixp_t **r_chip)
{
static snd_device_ops_t ops = {
.dev_free = snd_atiixp_dev_free,
};
atiixp_t *chip;
int err;
if ((err = pci_enable_device(pci)) < 0)
return err;
chip = snd_magic_kcalloc(atiixp_t, 0, GFP_KERNEL);
if (chip == NULL)
return -ENOMEM;
spin_lock_init(&chip->reg_lock);
spin_lock_init(&chip->ac97_lock);
chip->card = card;
chip->pci = pci;
chip->irq = -1;
chip->addr = pci_resource_start(pci, 0);
if ((chip->res = request_mem_region(chip->addr, ATI_MEM_REGION, "ATI IXP
AC97")) == NULL) {
snd_printk("unable to grab I/O memory 0x%lx\n", chip->addr);
snd_atiixp_free(chip);
return -EBUSY;
}
chip->remap_addr = (unsigned long) ioremap_nocache(chip->addr, ATI_MEM_REGION);
if (chip->remap_addr == 0) {
snd_printk("AC'97 space ioremap problem\n");
snd_atiixp_free(chip);
return -EIO;
}
if (request_irq(pci->irq, snd_atiixp_interrupt, SA_INTERRUPT|SA_SHIRQ,
card->shortname, (void *)chip)) {
snd_printk("unable to grab IRQ %d\n", pci->irq);
snd_atiixp_free(chip);
return -EBUSY;
}
chip->irq = pci->irq;
pci_set_master(pci);
synchronize_irq(chip->irq);
if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
snd_atiixp_free(chip);
return err;
}
snd_card_set_dev(card, &pci->dev);
*r_chip = chip;
return 0;
}
static int __devinit snd_atiixp_probe(struct pci_dev *pci,
const struct pci_device_id *pci_id)
{
static int dev;
snd_card_t *card;
atiixp_t *chip;
unsigned char revision;
int err;
if (dev >= SNDRV_CARDS)
return -ENODEV;
if (!enable[dev]) {
dev++;
return -ENOENT;
}
card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
if (card == NULL)
return -ENOMEM;
pci_read_config_byte(pci, PCI_REVISION_ID, &revision);
strcpy(card->driver, "ATIIXP");
strcpy(card->shortname, "ATI IXP");
if ((err = snd_atiixp_create(card, pci, &chip)) < 0)
goto __error;
if ((err = snd_atiixp_aclink_reset(chip)) < 0)
goto __error;
chip->spdif_over_aclink = spdif_aclink[dev];
if ((err = snd_atiixp_mixer_new(chip, ac97_clock[dev])) < 0)
goto __error;
if ((err = snd_atiixp_pcm_new(chip)) < 0)
goto __error;
snd_atiixp_proc_init(chip);
snd_atiixp_chip_start(chip);
sprintf(card->longname, "%s rev %x at 0x%lx, irq %i",
card->shortname, revision, chip->addr, chip->irq);
if ((err = snd_card_register(card)) < 0)
goto __error;
pci_set_drvdata(pci, chip);
dev++;
return 0;
__error:
snd_card_free(card);
return err;
}
static void __devexit snd_atiixp_remove(struct pci_dev *pci)
{
atiixp_t *chip = snd_magic_cast(atiixp_t, pci_get_drvdata(pci), return);
if (chip)
snd_card_free(chip->card);
pci_set_drvdata(pci, NULL);
}
static struct pci_driver driver = {
.name = "ATI IXP AC97 controller",
.id_table = snd_atiixp_ids,
.probe = snd_atiixp_probe,
.remove = __devexit_p(snd_atiixp_remove),
};
static int __init alsa_card_atiixp_init(void)
{
int err;
if ((err = pci_module_init(&driver)) < 0) {
#ifdef MODULE
printk(KERN_ERR "ATI IXP AC97 controller not found or device busy\n");
#endif
return err;
}
return 0;
}
static void __exit alsa_card_atiixp_exit(void)
{
pci_unregister_driver(&driver);
}
module_init(alsa_card_atiixp_init)
module_exit(alsa_card_atiixp_exit)
#ifndef MODULE
/* format is: snd-atiixp=enable,index,id,ac97_clock,spdif_aclink */
static int __init alsa_card_atiixp_setup(char *str)
{
static unsigned __initdata nr_dev = 0;
if (nr_dev >= SNDRV_CARDS)
return 0;
(void)(get_option(&str,&enable[nr_dev]) == 2 &&
get_option(&str,&index[nr_dev]) == 2 &&
get_id(&str,&id[nr_dev]) == 2 &&
get_option(&str,&ac97_clock[nr_dev]) == 2 &&
get_option(&str,&spdif_aclink[nr_dev]) == 2
);
nr_dev++;
return 1;
}
__setup("snd-atiixp=", alsa_card_atiixp_setup);
#endif /* ifndef MODULE */
EXPORT_NO_SYMBOLS; /* for 2.2/2.4 kernels */
Index: Kconfig
===================================================================
RCS file: /cvsroot/alsa/alsa-driver/pci/Kconfig,v
retrieving revision 1.10
retrieving revision 1.11
diff -u -r1.10 -r1.11
--- Kconfig 28 Jan 2004 18:55:42 -0000 1.10
+++ Kconfig 24 Feb 2004 15:23:10 -0000 1.11
@@ -35,3 +35,10 @@
help
Say 'Y' or 'M' to include support for Intel8x0 and AMD768/8111 based
modems.
+
+config SND_ATIIXP
+ tristate "ATI IXP 150/200/250"
+ depends on SND && EXPERIMENTAL
+ help
+ Say 'Y' or 'M' to include support for ATI IXP 150/200/250 AC97 controller.
+
Index: Makefile
===================================================================
RCS file: /cvsroot/alsa/alsa-driver/pci/Makefile,v
retrieving revision 1.18
retrieving revision 1.19
diff -u -r1.18 -r1.19
--- Makefile 30 Jan 2004 16:13:33 -0000 1.18
+++ Makefile 24 Feb 2004 15:23:10 -0000 1.19
@@ -15,9 +15,11 @@
snd-intel8x0m-objs := intel8x0m.o
snd-hdspm-objs := hdspm.o
+snd-atiixp-objs := atiixp.o
obj-$(CONFIG_SND_INTEL8X0M) += snd-intel8x0m.o
obj-$(CONFIG_SND_HDSPM) +=snd-hdspm.o
+obj-$(CONFIG_SND_ATIIXP) += snd-atiixp.o
# Hack for FM801 && TEA575x
ifeq (m,$(CONFIG_SND_FM801))
-------------------------------------------------------
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