forked from Minki/linux
4504487d92
The driver invokes snd_pcm_period_elapsed() simply from the interrupt handler. Set card->sync_irq for enabling the missing sync_stop PCM operation, as well as removing the superfluous synchronize_irq() call. Link: https://lore.kernel.org/r/20191210063454.31603-5-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
1303 lines
34 KiB
C
1303 lines
34 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* ALSA driver for ATI IXP 150/200/250 AC97 modem 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 MC97 controller");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_SUPPORTED_DEVICE("{{ATI,IXP150/200/250}}");
|
|
|
|
static int index = -2; /* Exclude the first card */
|
|
static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */
|
|
static int ac97_clock = 48000;
|
|
|
|
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).");
|
|
|
|
/* just for backward compatibility */
|
|
static bool enable;
|
|
module_param(enable, bool, 0444);
|
|
|
|
|
|
/*
|
|
*/
|
|
|
|
#define ATI_REG_ISR 0x00 /* interrupt source */
|
|
#define ATI_REG_ISR_MODEM_IN_XRUN (1U<<0)
|
|
#define ATI_REG_ISR_MODEM_IN_STATUS (1U<<1)
|
|
#define ATI_REG_ISR_MODEM_OUT1_XRUN (1U<<2)
|
|
#define ATI_REG_ISR_MODEM_OUT1_STATUS (1U<<3)
|
|
#define ATI_REG_ISR_MODEM_OUT2_XRUN (1U<<4)
|
|
#define ATI_REG_ISR_MODEM_OUT2_STATUS (1U<<5)
|
|
#define ATI_REG_ISR_MODEM_OUT3_XRUN (1U<<6)
|
|
#define ATI_REG_ISR_MODEM_OUT3_STATUS (1U<<7)
|
|
#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_ISR_MODEM_GPIO_DATA (1U<<14)
|
|
|
|
#define ATI_REG_IER 0x04 /* interrupt enable */
|
|
#define ATI_REG_IER_MODEM_IN_XRUN_EN (1U<<0)
|
|
#define ATI_REG_IER_MODEM_STATUS_EN (1U<<1)
|
|
#define ATI_REG_IER_MODEM_OUT1_XRUN_EN (1U<<2)
|
|
#define ATI_REG_IER_MODEM_OUT2_XRUN_EN (1U<<4)
|
|
#define ATI_REG_IER_MODEM_OUT3_XRUN_EN (1U<<6)
|
|
#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_MODEM_GPIO_DATA_EN (1U<<14) /* (WO) modem is running */
|
|
#define ATI_REG_IER_MODEM_SET_BUS_BUSY (1U<<15)
|
|
|
|
#define ATI_REG_CMD 0x08 /* command */
|
|
#define ATI_REG_CMD_POWERDOWN (1U<<0)
|
|
#define ATI_REG_CMD_MODEM_RECEIVE_EN (1U<<1) /* modem only */
|
|
#define ATI_REG_CMD_MODEM_SEND1_EN (1U<<2) /* modem only */
|
|
#define ATI_REG_CMD_MODEM_SEND2_EN (1U<<3) /* modem only */
|
|
#define ATI_REG_CMD_MODEM_SEND3_EN (1U<<4) /* modem only */
|
|
#define ATI_REG_CMD_MODEM_STATUS_MEM (1U<<5) /* modem only */
|
|
#define ATI_REG_CMD_MODEM_IN_DMA_EN (1U<<8) /* modem only */
|
|
#define ATI_REG_CMD_MODEM_OUT_DMA1_EN (1U<<9) /* modem only */
|
|
#define ATI_REG_CMD_MODEM_OUT_DMA2_EN (1U<<10) /* modem only */
|
|
#define ATI_REG_CMD_MODEM_OUT_DMA3_EN (1U<<11) /* modem only */
|
|
#define ATI_REG_CMD_AUDIO_PRESENT (1U<<20)
|
|
#define ATI_REG_CMD_MODEM_GPIO_THRU_DMA (1U<<22) /* modem only */
|
|
#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_MODEM_IN_DMA_LINKPTR 0x20
|
|
#define ATI_REG_MODEM_IN_DMA_DT_START 0x24 /* RO */
|
|
#define ATI_REG_MODEM_IN_DMA_DT_NEXT 0x28 /* RO */
|
|
#define ATI_REG_MODEM_IN_DMA_DT_CUR 0x2c /* RO */
|
|
#define ATI_REG_MODEM_IN_DMA_DT_SIZE 0x30
|
|
#define ATI_REG_MODEM_OUT_FIFO 0x34 /* output threshold */
|
|
#define ATI_REG_MODEM_OUT1_DMA_THRESHOLD_MASK (0xf<<16)
|
|
#define ATI_REG_MODEM_OUT1_DMA_THRESHOLD_SHIFT 16
|
|
#define ATI_REG_MODEM_OUT_DMA1_LINKPTR 0x38
|
|
#define ATI_REG_MODEM_OUT_DMA2_LINKPTR 0x3c
|
|
#define ATI_REG_MODEM_OUT_DMA3_LINKPTR 0x40
|
|
#define ATI_REG_MODEM_OUT_DMA1_DT_START 0x44
|
|
#define ATI_REG_MODEM_OUT_DMA1_DT_NEXT 0x48
|
|
#define ATI_REG_MODEM_OUT_DMA1_DT_CUR 0x4c
|
|
#define ATI_REG_MODEM_OUT_DMA2_DT_START 0x50
|
|
#define ATI_REG_MODEM_OUT_DMA2_DT_NEXT 0x54
|
|
#define ATI_REG_MODEM_OUT_DMA2_DT_CUR 0x58
|
|
#define ATI_REG_MODEM_OUT_DMA3_DT_START 0x5c
|
|
#define ATI_REG_MODEM_OUT_DMA3_DT_NEXT 0x60
|
|
#define ATI_REG_MODEM_OUT_DMA3_DT_CUR 0x64
|
|
#define ATI_REG_MODEM_OUT_DMA12_DT_SIZE 0x68
|
|
#define ATI_REG_MODEM_OUT_DMA3_DT_SIZE 0x6c
|
|
#define ATI_REG_MODEM_OUT_FIFO_USED 0x70
|
|
#define ATI_REG_MODEM_OUT_GPIO 0x74
|
|
#define ATI_REG_MODEM_OUT_GPIO_EN 1
|
|
#define ATI_REG_MODEM_OUT_GPIO_DATA_SHIFT 5
|
|
#define ATI_REG_MODEM_IN_GPIO 0x78
|
|
|
|
#define ATI_REG_MODEM_MIRROR 0x7c
|
|
#define ATI_REG_AUDIO_MIRROR 0x80
|
|
|
|
#define ATI_REG_MODEM_FIFO_FLUSH 0x88
|
|
#define ATI_REG_MODEM_FIFO_OUT1_FLUSH (1U<<0)
|
|
#define ATI_REG_MODEM_FIFO_OUT2_FLUSH (1U<<1)
|
|
#define ATI_REG_MODEM_FIFO_OUT3_FLUSH (1U<<2)
|
|
#define ATI_REG_MODEM_FIFO_IN_FLUSH (1U<<3)
|
|
|
|
/* LINKPTR */
|
|
#define ATI_REG_LINKPTR_EN (1U<<0)
|
|
|
|
#define ATI_MAX_DESCRIPTORS 256 /* max number of descriptor packets */
|
|
|
|
|
|
struct atiixp_modem;
|
|
|
|
/*
|
|
* DMA packate descriptor
|
|
*/
|
|
|
|
struct atiixp_dma_desc {
|
|
__le32 addr; /* DMA buffer address */
|
|
u16 status; /* status bits */
|
|
u16 size; /* size of the packet in dwords */
|
|
__le32 next; /* address of the next packet descriptor */
|
|
};
|
|
|
|
/*
|
|
* stream enum
|
|
*/
|
|
enum { ATI_DMA_PLAYBACK, ATI_DMA_CAPTURE, NUM_ATI_DMAS }; /* DMAs */
|
|
enum { ATI_PCM_OUT, ATI_PCM_IN, NUM_ATI_PCMS }; /* AC97 pcm slots */
|
|
enum { ATI_PCMDEV_ANALOG, NUM_ATI_PCMDEVS }; /* pcm devices */
|
|
|
|
#define NUM_ATI_CODECS 3
|
|
|
|
|
|
/*
|
|
* constants and callbacks for each DMA type
|
|
*/
|
|
struct atiixp_dma_ops {
|
|
int type; /* ATI_DMA_XXX */
|
|
unsigned int llp_offset; /* LINKPTR offset */
|
|
unsigned int dt_cur; /* DT_CUR offset */
|
|
/* called from open callback */
|
|
void (*enable_dma)(struct atiixp_modem *chip, int on);
|
|
/* called from trigger (START/STOP) */
|
|
void (*enable_transfer)(struct atiixp_modem *chip, int on);
|
|
/* called from trigger (STOP only) */
|
|
void (*flush_dma)(struct atiixp_modem *chip);
|
|
};
|
|
|
|
/*
|
|
* DMA stream
|
|
*/
|
|
struct atiixp_dma {
|
|
const struct atiixp_dma_ops *ops;
|
|
struct snd_dma_buffer desc_buf;
|
|
struct snd_pcm_substream *substream; /* assigned PCM substream */
|
|
unsigned int buf_addr, buf_bytes; /* DMA buffer address, bytes */
|
|
unsigned int period_bytes, periods;
|
|
int opened;
|
|
int running;
|
|
int pcm_open_flag;
|
|
int ac97_pcm_type; /* index # of ac97_pcm to access, -1 = not used */
|
|
};
|
|
|
|
/*
|
|
* ATI IXP chip
|
|
*/
|
|
struct atiixp_modem {
|
|
struct snd_card *card;
|
|
struct pci_dev *pci;
|
|
|
|
struct resource *res; /* memory i/o */
|
|
unsigned long addr;
|
|
void __iomem *remap_addr;
|
|
int irq;
|
|
|
|
struct snd_ac97_bus *ac97_bus;
|
|
struct snd_ac97 *ac97[NUM_ATI_CODECS];
|
|
|
|
spinlock_t reg_lock;
|
|
|
|
struct atiixp_dma dmas[NUM_ATI_DMAS];
|
|
struct ac97_pcm *pcms[NUM_ATI_PCMS];
|
|
struct snd_pcm *pcmdevs[NUM_ATI_PCMDEVS];
|
|
|
|
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 */
|
|
struct mutex open_mutex; /* playback open mutex */
|
|
};
|
|
|
|
|
|
/*
|
|
*/
|
|
static const struct pci_device_id snd_atiixp_ids[] = {
|
|
{ PCI_VDEVICE(ATI, 0x434d), 0 }, /* SB200 */
|
|
{ PCI_VDEVICE(ATI, 0x4378), 0 }, /* SB400 */
|
|
{ 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(struct atiixp_modem *chip, unsigned int reg,
|
|
unsigned int mask, unsigned int value)
|
|
{
|
|
void __iomem *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)
|
|
|
|
/*
|
|
* 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(struct atiixp_dma_desc))
|
|
|
|
/*
|
|
* 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(struct atiixp_modem *chip,
|
|
struct atiixp_dma *dma,
|
|
struct snd_pcm_substream *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_buf.area == NULL) {
|
|
if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, &chip->pci->dev,
|
|
ATI_DESC_LIST_SIZE, &dma->desc_buf) < 0)
|
|
return -ENOMEM;
|
|
dma->period_bytes = dma->periods = 0; /* clear */
|
|
}
|
|
|
|
if (dma->periods == 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_buf.addr;
|
|
for (i = 0; i < periods; i++) {
|
|
struct atiixp_dma_desc *desc;
|
|
desc = &((struct atiixp_dma_desc *)dma->desc_buf.area)[i];
|
|
desc->addr = cpu_to_le32(addr);
|
|
desc->status = 0;
|
|
desc->size = period_bytes >> 2; /* in dwords */
|
|
desc_addr += sizeof(struct atiixp_dma_desc);
|
|
if (i == periods - 1)
|
|
desc->next = cpu_to_le32((u32)dma->desc_buf.addr);
|
|
else
|
|
desc->next = cpu_to_le32(desc_addr);
|
|
addr += period_bytes;
|
|
}
|
|
|
|
writel((u32)dma->desc_buf.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(struct atiixp_modem *chip,
|
|
struct atiixp_dma *dma,
|
|
struct snd_pcm_substream *substream)
|
|
{
|
|
if (dma->desc_buf.area) {
|
|
writel(0, chip->remap_addr + dma->ops->llp_offset);
|
|
snd_dma_free_pages(&dma->desc_buf);
|
|
dma->desc_buf.area = NULL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* AC97 interface
|
|
*/
|
|
static int snd_atiixp_acquire_codec(struct atiixp_modem *chip)
|
|
{
|
|
int timeout = 1000;
|
|
|
|
while (atiixp_read(chip, PHYS_OUT_ADDR) & ATI_REG_PHYS_OUT_ADDR_EN) {
|
|
if (! timeout--) {
|
|
dev_warn(chip->card->dev, "codec acquire timeout\n");
|
|
return -EBUSY;
|
|
}
|
|
udelay(1);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static unsigned short snd_atiixp_codec_read(struct atiixp_modem *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);
|
|
/* time out may happen during reset */
|
|
if (reg < 0x7c)
|
|
dev_warn(chip->card->dev, "codec read timeout (reg %x)\n", reg);
|
|
return 0xffff;
|
|
}
|
|
|
|
|
|
static void snd_atiixp_codec_write(struct atiixp_modem *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(struct snd_ac97 *ac97,
|
|
unsigned short reg)
|
|
{
|
|
struct atiixp_modem *chip = ac97->private_data;
|
|
return snd_atiixp_codec_read(chip, ac97->num, reg);
|
|
|
|
}
|
|
|
|
static void snd_atiixp_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
|
|
unsigned short val)
|
|
{
|
|
struct atiixp_modem *chip = ac97->private_data;
|
|
if (reg == AC97_GPIO_STATUS) {
|
|
atiixp_write(chip, MODEM_OUT_GPIO,
|
|
(val << ATI_REG_MODEM_OUT_GPIO_DATA_SHIFT) | ATI_REG_MODEM_OUT_GPIO_EN);
|
|
return;
|
|
}
|
|
snd_atiixp_codec_write(chip, ac97->num, reg, val);
|
|
}
|
|
|
|
/*
|
|
* reset AC link
|
|
*/
|
|
static int snd_atiixp_aclink_reset(struct atiixp_modem *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);
|
|
msleep(1);
|
|
atiixp_update(chip, CMD, ATI_REG_CMD_AC_RESET, ATI_REG_CMD_AC_RESET);
|
|
if (!--timeout) {
|
|
dev_err(chip->card->dev, "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;
|
|
}
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static int snd_atiixp_aclink_down(struct atiixp_modem *chip)
|
|
{
|
|
// if (atiixp_read(chip, MODEM_MIRROR) & 0x1) /* modem running, too? */
|
|
// 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(struct atiixp_modem *chip)
|
|
{
|
|
int timeout;
|
|
|
|
chip->codec_not_ready_bits = 0;
|
|
atiixp_write(chip, IER, CODEC_CHECK_BITS);
|
|
/* wait for the interrupts */
|
|
timeout = 50;
|
|
while (timeout-- > 0) {
|
|
msleep(1);
|
|
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) {
|
|
dev_err(chip->card->dev, "no codec detected!\n");
|
|
return -ENXIO;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* enable DMA and irqs
|
|
*/
|
|
static int snd_atiixp_chip_start(struct atiixp_modem *chip)
|
|
{
|
|
unsigned int reg;
|
|
|
|
/* set up spdif, enable burst mode */
|
|
reg = atiixp_read(chip, CMD);
|
|
reg |= ATI_REG_CMD_BURST_EN;
|
|
if(!(reg & ATI_REG_CMD_MODEM_PRESENT))
|
|
reg |= ATI_REG_CMD_MODEM_PRESENT;
|
|
atiixp_write(chip, CMD, reg);
|
|
|
|
/* clear all interrupt source */
|
|
atiixp_write(chip, ISR, 0xffffffff);
|
|
/* enable irqs */
|
|
atiixp_write(chip, IER,
|
|
ATI_REG_IER_MODEM_STATUS_EN |
|
|
ATI_REG_IER_MODEM_IN_XRUN_EN |
|
|
ATI_REG_IER_MODEM_OUT1_XRUN_EN);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* disable DMA and IRQs
|
|
*/
|
|
static int snd_atiixp_chip_stop(struct atiixp_modem *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(struct snd_pcm_substream *substream)
|
|
{
|
|
struct atiixp_modem *chip = snd_pcm_substream_chip(substream);
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
struct atiixp_dma *dma = runtime->private_data;
|
|
unsigned int curptr;
|
|
int timeout = 1000;
|
|
|
|
while (timeout--) {
|
|
curptr = readl(chip->remap_addr + dma->ops->dt_cur);
|
|
if (curptr < dma->buf_addr)
|
|
continue;
|
|
curptr -= dma->buf_addr;
|
|
if (curptr >= dma->buf_bytes)
|
|
continue;
|
|
return bytes_to_frames(runtime, curptr);
|
|
}
|
|
dev_dbg(chip->card->dev, "invalid DMA pointer read 0x%x (buf=%x)\n",
|
|
readl(chip->remap_addr + dma->ops->dt_cur), dma->buf_addr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* XRUN detected, and stop the PCM substream
|
|
*/
|
|
static void snd_atiixp_xrun_dma(struct atiixp_modem *chip,
|
|
struct atiixp_dma *dma)
|
|
{
|
|
if (! dma->substream || ! dma->running)
|
|
return;
|
|
dev_dbg(chip->card->dev, "XRUN detected (DMA %d)\n", dma->ops->type);
|
|
snd_pcm_stop_xrun(dma->substream);
|
|
}
|
|
|
|
/*
|
|
* the period ack. update the substream.
|
|
*/
|
|
static void snd_atiixp_update_dma(struct atiixp_modem *chip,
|
|
struct atiixp_dma *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(struct atiixp_modem *chip)
|
|
{
|
|
unsigned int bus_busy;
|
|
if (atiixp_read(chip, CMD) & (ATI_REG_CMD_MODEM_SEND1_EN |
|
|
ATI_REG_CMD_MODEM_RECEIVE_EN))
|
|
bus_busy = ATI_REG_IER_MODEM_SET_BUS_BUSY;
|
|
else
|
|
bus_busy = 0;
|
|
atiixp_update(chip, IER, ATI_REG_IER_MODEM_SET_BUS_BUSY, bus_busy);
|
|
}
|
|
|
|
/* common trigger callback
|
|
* calling the lowlevel callbacks in it
|
|
*/
|
|
static int snd_atiixp_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
|
|
{
|
|
struct atiixp_modem *chip = snd_pcm_substream_chip(substream);
|
|
struct atiixp_dma *dma = substream->runtime->private_data;
|
|
int err = 0;
|
|
|
|
if (snd_BUG_ON(!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(struct atiixp_modem *chip)
|
|
{
|
|
atiixp_write(chip, MODEM_FIFO_FLUSH, ATI_REG_MODEM_FIFO_OUT1_FLUSH);
|
|
}
|
|
|
|
/* enable/disable analog OUT DMA */
|
|
static void atiixp_out_enable_dma(struct atiixp_modem *chip, int on)
|
|
{
|
|
unsigned int data;
|
|
data = atiixp_read(chip, CMD);
|
|
if (on) {
|
|
if (data & ATI_REG_CMD_MODEM_OUT_DMA1_EN)
|
|
return;
|
|
atiixp_out_flush_dma(chip);
|
|
data |= ATI_REG_CMD_MODEM_OUT_DMA1_EN;
|
|
} else
|
|
data &= ~ATI_REG_CMD_MODEM_OUT_DMA1_EN;
|
|
atiixp_write(chip, CMD, data);
|
|
}
|
|
|
|
/* start/stop transfer over OUT DMA */
|
|
static void atiixp_out_enable_transfer(struct atiixp_modem *chip, int on)
|
|
{
|
|
atiixp_update(chip, CMD, ATI_REG_CMD_MODEM_SEND1_EN,
|
|
on ? ATI_REG_CMD_MODEM_SEND1_EN : 0);
|
|
}
|
|
|
|
/* enable/disable analog IN DMA */
|
|
static void atiixp_in_enable_dma(struct atiixp_modem *chip, int on)
|
|
{
|
|
atiixp_update(chip, CMD, ATI_REG_CMD_MODEM_IN_DMA_EN,
|
|
on ? ATI_REG_CMD_MODEM_IN_DMA_EN : 0);
|
|
}
|
|
|
|
/* start/stop analog IN DMA */
|
|
static void atiixp_in_enable_transfer(struct atiixp_modem *chip, int on)
|
|
{
|
|
if (on) {
|
|
unsigned int data = atiixp_read(chip, CMD);
|
|
if (! (data & ATI_REG_CMD_MODEM_RECEIVE_EN)) {
|
|
data |= ATI_REG_CMD_MODEM_RECEIVE_EN;
|
|
atiixp_write(chip, CMD, data);
|
|
}
|
|
} else
|
|
atiixp_update(chip, CMD, ATI_REG_CMD_MODEM_RECEIVE_EN, 0);
|
|
}
|
|
|
|
/* flush FIFO of analog IN DMA */
|
|
static void atiixp_in_flush_dma(struct atiixp_modem *chip)
|
|
{
|
|
atiixp_write(chip, MODEM_FIFO_FLUSH, ATI_REG_MODEM_FIFO_IN_FLUSH);
|
|
}
|
|
|
|
/* set up slots and formats for analog OUT */
|
|
static int snd_atiixp_playback_prepare(struct snd_pcm_substream *substream)
|
|
{
|
|
struct atiixp_modem *chip = snd_pcm_substream_chip(substream);
|
|
unsigned int data;
|
|
|
|
spin_lock_irq(&chip->reg_lock);
|
|
/* set output threshold */
|
|
data = atiixp_read(chip, MODEM_OUT_FIFO);
|
|
data &= ~ATI_REG_MODEM_OUT1_DMA_THRESHOLD_MASK;
|
|
data |= 0x04 << ATI_REG_MODEM_OUT1_DMA_THRESHOLD_SHIFT;
|
|
atiixp_write(chip, MODEM_OUT_FIFO, data);
|
|
spin_unlock_irq(&chip->reg_lock);
|
|
return 0;
|
|
}
|
|
|
|
/* set up slots and formats for analog IN */
|
|
static int snd_atiixp_capture_prepare(struct snd_pcm_substream *substream)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* hw_params - allocate the buffer and set up buffer descriptors
|
|
*/
|
|
static int snd_atiixp_pcm_hw_params(struct snd_pcm_substream *substream,
|
|
struct snd_pcm_hw_params *hw_params)
|
|
{
|
|
struct atiixp_modem *chip = snd_pcm_substream_chip(substream);
|
|
struct atiixp_dma *dma = substream->runtime->private_data;
|
|
int err;
|
|
int i;
|
|
|
|
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;
|
|
|
|
/* set up modem rate */
|
|
for (i = 0; i < NUM_ATI_CODECS; i++) {
|
|
if (! chip->ac97[i])
|
|
continue;
|
|
snd_ac97_write(chip->ac97[i], AC97_LINE1_RATE, params_rate(hw_params));
|
|
snd_ac97_write(chip->ac97[i], AC97_LINE1_LEVEL, 0);
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static int snd_atiixp_pcm_hw_free(struct snd_pcm_substream *substream)
|
|
{
|
|
struct atiixp_modem *chip = snd_pcm_substream_chip(substream);
|
|
struct atiixp_dma *dma = substream->runtime->private_data;
|
|
|
|
atiixp_clear_dma_packets(chip, dma, substream);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* pcm hardware definition, identical for all DMA types
|
|
*/
|
|
static const struct snd_pcm_hardware 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,
|
|
.rates = (SNDRV_PCM_RATE_8000 |
|
|
SNDRV_PCM_RATE_16000 |
|
|
SNDRV_PCM_RATE_KNOT),
|
|
.rate_min = 8000,
|
|
.rate_max = 16000,
|
|
.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(struct snd_pcm_substream *substream,
|
|
struct atiixp_dma *dma, int pcm_type)
|
|
{
|
|
struct atiixp_modem *chip = snd_pcm_substream_chip(substream);
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
int err;
|
|
static const unsigned int rates[] = { 8000, 9600, 12000, 16000 };
|
|
static const struct snd_pcm_hw_constraint_list hw_constraints_rates = {
|
|
.count = ARRAY_SIZE(rates),
|
|
.list = rates,
|
|
.mask = 0,
|
|
};
|
|
|
|
if (snd_BUG_ON(!dma->ops || !dma->ops->enable_dma))
|
|
return -EINVAL;
|
|
|
|
if (dma->opened)
|
|
return -EBUSY;
|
|
dma->substream = substream;
|
|
runtime->hw = snd_atiixp_pcm_hw;
|
|
dma->ac97_pcm_type = pcm_type;
|
|
if ((err = snd_pcm_hw_constraint_list(runtime, 0,
|
|
SNDRV_PCM_HW_PARAM_RATE,
|
|
&hw_constraints_rates)) < 0)
|
|
return err;
|
|
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_irq(&chip->reg_lock);
|
|
dma->ops->enable_dma(chip, 1);
|
|
spin_unlock_irq(&chip->reg_lock);
|
|
dma->opened = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int snd_atiixp_pcm_close(struct snd_pcm_substream *substream,
|
|
struct atiixp_dma *dma)
|
|
{
|
|
struct atiixp_modem *chip = snd_pcm_substream_chip(substream);
|
|
/* disable DMA bits */
|
|
if (snd_BUG_ON(!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;
|
|
dma->opened = 0;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
*/
|
|
static int snd_atiixp_playback_open(struct snd_pcm_substream *substream)
|
|
{
|
|
struct atiixp_modem *chip = snd_pcm_substream_chip(substream);
|
|
int err;
|
|
|
|
mutex_lock(&chip->open_mutex);
|
|
err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_PLAYBACK], 0);
|
|
mutex_unlock(&chip->open_mutex);
|
|
if (err < 0)
|
|
return err;
|
|
return 0;
|
|
}
|
|
|
|
static int snd_atiixp_playback_close(struct snd_pcm_substream *substream)
|
|
{
|
|
struct atiixp_modem *chip = snd_pcm_substream_chip(substream);
|
|
int err;
|
|
mutex_lock(&chip->open_mutex);
|
|
err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_PLAYBACK]);
|
|
mutex_unlock(&chip->open_mutex);
|
|
return err;
|
|
}
|
|
|
|
static int snd_atiixp_capture_open(struct snd_pcm_substream *substream)
|
|
{
|
|
struct atiixp_modem *chip = snd_pcm_substream_chip(substream);
|
|
return snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_CAPTURE], 1);
|
|
}
|
|
|
|
static int snd_atiixp_capture_close(struct snd_pcm_substream *substream)
|
|
{
|
|
struct atiixp_modem *chip = snd_pcm_substream_chip(substream);
|
|
return snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_CAPTURE]);
|
|
}
|
|
|
|
|
|
/* AC97 playback */
|
|
static const struct snd_pcm_ops snd_atiixp_playback_ops = {
|
|
.open = snd_atiixp_playback_open,
|
|
.close = snd_atiixp_playback_close,
|
|
.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 const struct snd_pcm_ops snd_atiixp_capture_ops = {
|
|
.open = snd_atiixp_capture_open,
|
|
.close = snd_atiixp_capture_close,
|
|
.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,
|
|
};
|
|
|
|
static const struct atiixp_dma_ops snd_atiixp_playback_dma_ops = {
|
|
.type = ATI_DMA_PLAYBACK,
|
|
.llp_offset = ATI_REG_MODEM_OUT_DMA1_LINKPTR,
|
|
.dt_cur = ATI_REG_MODEM_OUT_DMA1_DT_CUR,
|
|
.enable_dma = atiixp_out_enable_dma,
|
|
.enable_transfer = atiixp_out_enable_transfer,
|
|
.flush_dma = atiixp_out_flush_dma,
|
|
};
|
|
|
|
static const struct atiixp_dma_ops snd_atiixp_capture_dma_ops = {
|
|
.type = ATI_DMA_CAPTURE,
|
|
.llp_offset = ATI_REG_MODEM_IN_DMA_LINKPTR,
|
|
.dt_cur = ATI_REG_MODEM_IN_DMA_DT_CUR,
|
|
.enable_dma = atiixp_in_enable_dma,
|
|
.enable_transfer = atiixp_in_enable_transfer,
|
|
.flush_dma = atiixp_in_flush_dma,
|
|
};
|
|
|
|
static int snd_atiixp_pcm_new(struct atiixp_modem *chip)
|
|
{
|
|
struct snd_pcm *pcm;
|
|
int err;
|
|
|
|
/* initialize constants */
|
|
chip->dmas[ATI_DMA_PLAYBACK].ops = &snd_atiixp_playback_dma_ops;
|
|
chip->dmas[ATI_DMA_CAPTURE].ops = &snd_atiixp_capture_dma_ops;
|
|
|
|
/* PCM #0: analog I/O */
|
|
err = snd_pcm_new(chip->card, "ATI IXP MC97", ATI_PCMDEV_ANALOG, 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->dev_class = SNDRV_PCM_CLASS_MODEM;
|
|
pcm->private_data = chip;
|
|
strcpy(pcm->name, "ATI IXP MC97");
|
|
chip->pcmdevs[ATI_PCMDEV_ANALOG] = pcm;
|
|
|
|
snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
|
|
&chip->pci->dev, 64*1024, 128*1024);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* interrupt handler
|
|
*/
|
|
static irqreturn_t snd_atiixp_interrupt(int irq, void *dev_id)
|
|
{
|
|
struct atiixp_modem *chip = dev_id;
|
|
unsigned int status;
|
|
|
|
status = atiixp_read(chip, ISR);
|
|
|
|
if (! status)
|
|
return IRQ_NONE;
|
|
|
|
/* process audio DMA */
|
|
if (status & ATI_REG_ISR_MODEM_OUT1_XRUN)
|
|
snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]);
|
|
else if (status & ATI_REG_ISR_MODEM_OUT1_STATUS)
|
|
snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]);
|
|
if (status & ATI_REG_ISR_MODEM_IN_XRUN)
|
|
snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]);
|
|
else if (status & ATI_REG_ISR_MODEM_IN_STATUS)
|
|
snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]);
|
|
|
|
/* 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 snd_atiixp_mixer_new(struct atiixp_modem *chip, int clock)
|
|
{
|
|
struct snd_ac97_bus *pbus;
|
|
struct snd_ac97_template ac97;
|
|
int i, err;
|
|
int codec_count;
|
|
static struct snd_ac97_bus_ops ops = {
|
|
.write = snd_atiixp_ac97_write,
|
|
.read = snd_atiixp_ac97_read,
|
|
};
|
|
static unsigned int codec_skip[NUM_ATI_CODECS] = {
|
|
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;
|
|
|
|
if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus)) < 0)
|
|
return err;
|
|
pbus->clock = clock;
|
|
chip->ac97_bus = pbus;
|
|
|
|
codec_count = 0;
|
|
for (i = 0; i < NUM_ATI_CODECS; 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;
|
|
ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE;
|
|
if ((err = snd_ac97_mixer(pbus, &ac97, &chip->ac97[i])) < 0) {
|
|
chip->ac97[i] = NULL; /* to be sure */
|
|
dev_dbg(chip->card->dev,
|
|
"codec %d not available for modem\n", i);
|
|
continue;
|
|
}
|
|
codec_count++;
|
|
}
|
|
|
|
if (! codec_count) {
|
|
dev_err(chip->card->dev, "no codec available\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* snd_ac97_tune_hardware(chip->ac97, ac97_quirks); */
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
/*
|
|
* power management
|
|
*/
|
|
static int snd_atiixp_suspend(struct device *dev)
|
|
{
|
|
struct snd_card *card = dev_get_drvdata(dev);
|
|
struct atiixp_modem *chip = card->private_data;
|
|
int i;
|
|
|
|
snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
|
|
for (i = 0; i < NUM_ATI_CODECS; i++)
|
|
snd_ac97_suspend(chip->ac97[i]);
|
|
snd_atiixp_aclink_down(chip);
|
|
snd_atiixp_chip_stop(chip);
|
|
return 0;
|
|
}
|
|
|
|
static int snd_atiixp_resume(struct device *dev)
|
|
{
|
|
struct snd_card *card = dev_get_drvdata(dev);
|
|
struct atiixp_modem *chip = card->private_data;
|
|
int i;
|
|
|
|
snd_atiixp_aclink_reset(chip);
|
|
snd_atiixp_chip_start(chip);
|
|
|
|
for (i = 0; i < NUM_ATI_CODECS; i++)
|
|
snd_ac97_resume(chip->ac97[i]);
|
|
|
|
snd_power_change_state(card, SNDRV_CTL_POWER_D0);
|
|
return 0;
|
|
}
|
|
|
|
static SIMPLE_DEV_PM_OPS(snd_atiixp_pm, snd_atiixp_suspend, snd_atiixp_resume);
|
|
#define SND_ATIIXP_PM_OPS &snd_atiixp_pm
|
|
#else
|
|
#define SND_ATIIXP_PM_OPS NULL
|
|
#endif /* CONFIG_PM_SLEEP */
|
|
|
|
/*
|
|
* proc interface for register dump
|
|
*/
|
|
|
|
static void snd_atiixp_proc_read(struct snd_info_entry *entry,
|
|
struct snd_info_buffer *buffer)
|
|
{
|
|
struct atiixp_modem *chip = entry->private_data;
|
|
int i;
|
|
|
|
for (i = 0; i < 256; i += 4)
|
|
snd_iprintf(buffer, "%02x: %08x\n", i, readl(chip->remap_addr + i));
|
|
}
|
|
|
|
static void snd_atiixp_proc_init(struct atiixp_modem *chip)
|
|
{
|
|
snd_card_ro_proc_new(chip->card, "atiixp-modem", chip,
|
|
snd_atiixp_proc_read);
|
|
}
|
|
|
|
|
|
/*
|
|
* destructor
|
|
*/
|
|
|
|
static int snd_atiixp_free(struct atiixp_modem *chip)
|
|
{
|
|
if (chip->irq < 0)
|
|
goto __hw_end;
|
|
snd_atiixp_chip_stop(chip);
|
|
|
|
__hw_end:
|
|
if (chip->irq >= 0)
|
|
free_irq(chip->irq, chip);
|
|
iounmap(chip->remap_addr);
|
|
pci_release_regions(chip->pci);
|
|
pci_disable_device(chip->pci);
|
|
kfree(chip);
|
|
return 0;
|
|
}
|
|
|
|
static int snd_atiixp_dev_free(struct snd_device *device)
|
|
{
|
|
struct atiixp_modem *chip = device->device_data;
|
|
return snd_atiixp_free(chip);
|
|
}
|
|
|
|
/*
|
|
* constructor for chip instance
|
|
*/
|
|
static int snd_atiixp_create(struct snd_card *card,
|
|
struct pci_dev *pci,
|
|
struct atiixp_modem **r_chip)
|
|
{
|
|
static struct snd_device_ops ops = {
|
|
.dev_free = snd_atiixp_dev_free,
|
|
};
|
|
struct atiixp_modem *chip;
|
|
int err;
|
|
|
|
if ((err = pci_enable_device(pci)) < 0)
|
|
return err;
|
|
|
|
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
|
|
if (chip == NULL) {
|
|
pci_disable_device(pci);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
spin_lock_init(&chip->reg_lock);
|
|
mutex_init(&chip->open_mutex);
|
|
chip->card = card;
|
|
chip->pci = pci;
|
|
chip->irq = -1;
|
|
if ((err = pci_request_regions(pci, "ATI IXP MC97")) < 0) {
|
|
kfree(chip);
|
|
pci_disable_device(pci);
|
|
return err;
|
|
}
|
|
chip->addr = pci_resource_start(pci, 0);
|
|
chip->remap_addr = pci_ioremap_bar(pci, 0);
|
|
if (chip->remap_addr == NULL) {
|
|
dev_err(card->dev, "AC'97 space ioremap problem\n");
|
|
snd_atiixp_free(chip);
|
|
return -EIO;
|
|
}
|
|
|
|
if (request_irq(pci->irq, snd_atiixp_interrupt, IRQF_SHARED,
|
|
KBUILD_MODNAME, chip)) {
|
|
dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
|
|
snd_atiixp_free(chip);
|
|
return -EBUSY;
|
|
}
|
|
chip->irq = pci->irq;
|
|
card->sync_irq = chip->irq;
|
|
pci_set_master(pci);
|
|
|
|
if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
|
|
snd_atiixp_free(chip);
|
|
return err;
|
|
}
|
|
|
|
*r_chip = chip;
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int snd_atiixp_probe(struct pci_dev *pci,
|
|
const struct pci_device_id *pci_id)
|
|
{
|
|
struct snd_card *card;
|
|
struct atiixp_modem *chip;
|
|
int err;
|
|
|
|
err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
strcpy(card->driver, "ATIIXP-MODEM");
|
|
strcpy(card->shortname, "ATI IXP Modem");
|
|
if ((err = snd_atiixp_create(card, pci, &chip)) < 0)
|
|
goto __error;
|
|
card->private_data = chip;
|
|
|
|
if ((err = snd_atiixp_aclink_reset(chip)) < 0)
|
|
goto __error;
|
|
|
|
if ((err = snd_atiixp_mixer_new(chip, ac97_clock)) < 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, pci->revision, chip->addr, chip->irq);
|
|
|
|
if ((err = snd_card_register(card)) < 0)
|
|
goto __error;
|
|
|
|
pci_set_drvdata(pci, card);
|
|
return 0;
|
|
|
|
__error:
|
|
snd_card_free(card);
|
|
return err;
|
|
}
|
|
|
|
static void snd_atiixp_remove(struct pci_dev *pci)
|
|
{
|
|
snd_card_free(pci_get_drvdata(pci));
|
|
}
|
|
|
|
static struct pci_driver atiixp_modem_driver = {
|
|
.name = KBUILD_MODNAME,
|
|
.id_table = snd_atiixp_ids,
|
|
.probe = snd_atiixp_probe,
|
|
.remove = snd_atiixp_remove,
|
|
.driver = {
|
|
.pm = SND_ATIIXP_PM_OPS,
|
|
},
|
|
};
|
|
|
|
module_pci_driver(atiixp_modem_driver);
|