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intel8x0m.c
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* ALSA modem driver for Intel ICH (i8x0) chipsets
*
* Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
*
* This is modified (by Sasha Khapyorsky <sashak@alsa-project.org>) version
* of ALSA ICH sound driver intel8x0.c .
*/
#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 <sound/core.h>
#include <sound/pcm.h>
#include <sound/ac97_codec.h>
#include <sound/info.h>
#include <sound/initval.h>
MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
MODULE_DESCRIPTION("Intel 82801AA,82901AB,i810,i820,i830,i840,i845,MX440; "
"SiS 7013; NVidia MCP/2/2S/3 modems");
MODULE_LICENSE("GPL");
static int index = -2; /* Exclude the first card */
static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */
static int ac97_clock;
module_param(index, int, 0444);
MODULE_PARM_DESC(index, "Index value for Intel i8x0 modemcard.");
module_param(id, charp, 0444);
MODULE_PARM_DESC(id, "ID string for Intel i8x0 modemcard.");
module_param(ac97_clock, int, 0444);
MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (0 = auto-detect).");
/* just for backward compatibility */
static bool enable;
module_param(enable, bool, 0444);
/*
* Direct registers
*/
enum { DEVICE_INTEL, DEVICE_SIS, DEVICE_ALI, DEVICE_NFORCE };
#define ICHREG(x) ICH_REG_##x
#define DEFINE_REGSET(name,base) \
enum { \
ICH_REG_##name##_BDBAR = base + 0x0, /* dword - buffer descriptor list base address */ \
ICH_REG_##name##_CIV = base + 0x04, /* byte - current index value */ \
ICH_REG_##name##_LVI = base + 0x05, /* byte - last valid index */ \
ICH_REG_##name##_SR = base + 0x06, /* byte - status register */ \
ICH_REG_##name##_PICB = base + 0x08, /* word - position in current buffer */ \
ICH_REG_##name##_PIV = base + 0x0a, /* byte - prefetched index value */ \
ICH_REG_##name##_CR = base + 0x0b, /* byte - control register */ \
}
/* busmaster blocks */
DEFINE_REGSET(OFF, 0); /* offset */
/* values for each busmaster block */
/* LVI */
#define ICH_REG_LVI_MASK 0x1f
/* SR */
#define ICH_FIFOE 0x10 /* FIFO error */
#define ICH_BCIS 0x08 /* buffer completion interrupt status */
#define ICH_LVBCI 0x04 /* last valid buffer completion interrupt */
#define ICH_CELV 0x02 /* current equals last valid */
#define ICH_DCH 0x01 /* DMA controller halted */
/* PIV */
#define ICH_REG_PIV_MASK 0x1f /* mask */
/* CR */
#define ICH_IOCE 0x10 /* interrupt on completion enable */
#define ICH_FEIE 0x08 /* fifo error interrupt enable */
#define ICH_LVBIE 0x04 /* last valid buffer interrupt enable */
#define ICH_RESETREGS 0x02 /* reset busmaster registers */
#define ICH_STARTBM 0x01 /* start busmaster operation */
/* global block */
#define ICH_REG_GLOB_CNT 0x3c /* dword - global control */
#define ICH_TRIE 0x00000040 /* tertiary resume interrupt enable */
#define ICH_SRIE 0x00000020 /* secondary resume interrupt enable */
#define ICH_PRIE 0x00000010 /* primary resume interrupt enable */
#define ICH_ACLINK 0x00000008 /* AClink shut off */
#define ICH_AC97WARM 0x00000004 /* AC'97 warm reset */
#define ICH_AC97COLD 0x00000002 /* AC'97 cold reset */
#define ICH_GIE 0x00000001 /* GPI interrupt enable */
#define ICH_REG_GLOB_STA 0x40 /* dword - global status */
#define ICH_TRI 0x20000000 /* ICH4: tertiary (AC_SDIN2) resume interrupt */
#define ICH_TCR 0x10000000 /* ICH4: tertiary (AC_SDIN2) codec ready */
#define ICH_BCS 0x08000000 /* ICH4: bit clock stopped */
#define ICH_SPINT 0x04000000 /* ICH4: S/PDIF interrupt */
#define ICH_P2INT 0x02000000 /* ICH4: PCM2-In interrupt */
#define ICH_M2INT 0x01000000 /* ICH4: Mic2-In interrupt */
#define ICH_SAMPLE_CAP 0x00c00000 /* ICH4: sample capability bits (RO) */
#define ICH_MULTICHAN_CAP 0x00300000 /* ICH4: multi-channel capability bits (RO) */
#define ICH_MD3 0x00020000 /* modem power down semaphore */
#define ICH_AD3 0x00010000 /* audio power down semaphore */
#define ICH_RCS 0x00008000 /* read completion status */
#define ICH_BIT3 0x00004000 /* bit 3 slot 12 */
#define ICH_BIT2 0x00002000 /* bit 2 slot 12 */
#define ICH_BIT1 0x00001000 /* bit 1 slot 12 */
#define ICH_SRI 0x00000800 /* secondary (AC_SDIN1) resume interrupt */
#define ICH_PRI 0x00000400 /* primary (AC_SDIN0) resume interrupt */
#define ICH_SCR 0x00000200 /* secondary (AC_SDIN1) codec ready */
#define ICH_PCR 0x00000100 /* primary (AC_SDIN0) codec ready */
#define ICH_MCINT 0x00000080 /* MIC capture interrupt */
#define ICH_POINT 0x00000040 /* playback interrupt */
#define ICH_PIINT 0x00000020 /* capture interrupt */
#define ICH_NVSPINT 0x00000010 /* nforce spdif interrupt */
#define ICH_MOINT 0x00000004 /* modem playback interrupt */
#define ICH_MIINT 0x00000002 /* modem capture interrupt */
#define ICH_GSCI 0x00000001 /* GPI status change interrupt */
#define ICH_REG_ACC_SEMA 0x44 /* byte - codec write semaphore */
#define ICH_CAS 0x01 /* codec access semaphore */
#define ICH_MAX_FRAGS 32 /* max hw frags */
/*
*
*/
enum { ICHD_MDMIN, ICHD_MDMOUT, ICHD_MDMLAST = ICHD_MDMOUT };
enum { ALID_MDMIN, ALID_MDMOUT, ALID_MDMLAST = ALID_MDMOUT };
#define get_ichdev(substream) (substream->runtime->private_data)
struct ichdev {
unsigned int ichd; /* ich device number */
unsigned long reg_offset; /* offset to bmaddr */
__le32 *bdbar; /* CPU address (32bit) */
unsigned int bdbar_addr; /* PCI bus address (32bit) */
struct snd_pcm_substream *substream;
unsigned int physbuf; /* physical address (32bit) */
unsigned int size;
unsigned int fragsize;
unsigned int fragsize1;
unsigned int position;
int frags;
int lvi;
int lvi_frag;
int civ;
int ack;
int ack_reload;
unsigned int ack_bit;
unsigned int roff_sr;
unsigned int roff_picb;
unsigned int int_sta_mask; /* interrupt status mask */
unsigned int ali_slot; /* ALI DMA slot */
struct snd_ac97 *ac97;
};
struct intel8x0m {
unsigned int device_type;
int irq;
void __iomem *addr;
void __iomem *bmaddr;
struct pci_dev *pci;
struct snd_card *card;
int pcm_devs;
struct snd_pcm *pcm[2];
struct ichdev ichd[2];
unsigned int in_ac97_init: 1;
struct snd_ac97_bus *ac97_bus;
struct snd_ac97 *ac97;
spinlock_t reg_lock;
struct snd_dma_buffer *bdbars;
u32 bdbars_count;
u32 int_sta_reg; /* interrupt status register */
u32 int_sta_mask; /* interrupt status mask */
unsigned int pcm_pos_shift;
};
static const struct pci_device_id snd_intel8x0m_ids[] = {
{ PCI_VDEVICE(INTEL, 0x2416), DEVICE_INTEL }, /* 82801AA */
{ PCI_VDEVICE(INTEL, 0x2426), DEVICE_INTEL }, /* 82901AB */
{ PCI_VDEVICE(INTEL, 0x2446), DEVICE_INTEL }, /* 82801BA */
{ PCI_VDEVICE(INTEL, 0x2486), DEVICE_INTEL }, /* ICH3 */
{ PCI_VDEVICE(INTEL, 0x24c6), DEVICE_INTEL }, /* ICH4 */
{ PCI_VDEVICE(INTEL, 0x24d6), DEVICE_INTEL }, /* ICH5 */
{ PCI_VDEVICE(INTEL, 0x266d), DEVICE_INTEL }, /* ICH6 */
{ PCI_VDEVICE(INTEL, 0x27dd), DEVICE_INTEL }, /* ICH7 */
{ PCI_VDEVICE(INTEL, 0x7196), DEVICE_INTEL }, /* 440MX */
{ PCI_VDEVICE(AMD, 0x7446), DEVICE_INTEL }, /* AMD768 */
{ PCI_VDEVICE(SI, 0x7013), DEVICE_SIS }, /* SI7013 */
{ PCI_VDEVICE(NVIDIA, 0x01c1), DEVICE_NFORCE }, /* NFORCE */
{ PCI_VDEVICE(NVIDIA, 0x0069), DEVICE_NFORCE }, /* NFORCE2 */
{ PCI_VDEVICE(NVIDIA, 0x0089), DEVICE_NFORCE }, /* NFORCE2s */
{ PCI_VDEVICE(NVIDIA, 0x00d9), DEVICE_NFORCE }, /* NFORCE3 */
{ PCI_VDEVICE(AMD, 0x746e), DEVICE_INTEL }, /* AMD8111 */
#if 0
{ PCI_VDEVICE(AL, 0x5455), DEVICE_ALI }, /* Ali5455 */
#endif
{ 0, }
};
MODULE_DEVICE_TABLE(pci, snd_intel8x0m_ids);
/*
* Lowlevel I/O - busmaster
*/
static inline u8 igetbyte(struct intel8x0m *chip, u32 offset)
{
return ioread8(chip->bmaddr + offset);
}
static inline u16 igetword(struct intel8x0m *chip, u32 offset)
{
return ioread16(chip->bmaddr + offset);
}
static inline u32 igetdword(struct intel8x0m *chip, u32 offset)
{
return ioread32(chip->bmaddr + offset);
}
static inline void iputbyte(struct intel8x0m *chip, u32 offset, u8 val)
{
iowrite8(val, chip->bmaddr + offset);
}
static inline void iputword(struct intel8x0m *chip, u32 offset, u16 val)
{
iowrite16(val, chip->bmaddr + offset);
}
static inline void iputdword(struct intel8x0m *chip, u32 offset, u32 val)
{
iowrite32(val, chip->bmaddr + offset);
}
/*
* Lowlevel I/O - AC'97 registers
*/
static inline u16 iagetword(struct intel8x0m *chip, u32 offset)
{
return ioread16(chip->addr + offset);
}
static inline void iaputword(struct intel8x0m *chip, u32 offset, u16 val)
{
iowrite16(val, chip->addr + offset);
}
/*
* Basic I/O
*/
/*
* access to AC97 codec via normal i/o (for ICH and SIS7013)
*/
/* return the GLOB_STA bit for the corresponding codec */
static unsigned int get_ich_codec_bit(struct intel8x0m *chip, unsigned int codec)
{
static const unsigned int codec_bit[3] = {
ICH_PCR, ICH_SCR, ICH_TCR
};
if (snd_BUG_ON(codec >= 3))
return ICH_PCR;
return codec_bit[codec];
}
static int snd_intel8x0m_codec_semaphore(struct intel8x0m *chip, unsigned int codec)
{
int time;
if (codec > 1)
return -EIO;
codec = get_ich_codec_bit(chip, codec);
/* codec ready ? */
if ((igetdword(chip, ICHREG(GLOB_STA)) & codec) == 0)
return -EIO;
/* Anyone holding a semaphore for 1 msec should be shot... */
time = 100;
do {
if (!(igetbyte(chip, ICHREG(ACC_SEMA)) & ICH_CAS))
return 0;
udelay(10);
} while (time--);
/* access to some forbidden (non existent) ac97 registers will not
* reset the semaphore. So even if you don't get the semaphore, still
* continue the access. We don't need the semaphore anyway. */
dev_err(chip->card->dev,
"codec_semaphore: semaphore is not ready [0x%x][0x%x]\n",
igetbyte(chip, ICHREG(ACC_SEMA)), igetdword(chip, ICHREG(GLOB_STA)));
iagetword(chip, 0); /* clear semaphore flag */
/* I don't care about the semaphore */
return -EBUSY;
}
static void snd_intel8x0m_codec_write(struct snd_ac97 *ac97,
unsigned short reg,
unsigned short val)
{
struct intel8x0m *chip = ac97->private_data;
if (snd_intel8x0m_codec_semaphore(chip, ac97->num) < 0) {
if (! chip->in_ac97_init)
dev_err(chip->card->dev,
"codec_write %d: semaphore is not ready for register 0x%x\n",
ac97->num, reg);
}
iaputword(chip, reg + ac97->num * 0x80, val);
}
static unsigned short snd_intel8x0m_codec_read(struct snd_ac97 *ac97,
unsigned short reg)
{
struct intel8x0m *chip = ac97->private_data;
unsigned short res;
unsigned int tmp;
if (snd_intel8x0m_codec_semaphore(chip, ac97->num) < 0) {
if (! chip->in_ac97_init)
dev_err(chip->card->dev,
"codec_read %d: semaphore is not ready for register 0x%x\n",
ac97->num, reg);
res = 0xffff;
} else {
res = iagetword(chip, reg + ac97->num * 0x80);
tmp = igetdword(chip, ICHREG(GLOB_STA));
if (tmp & ICH_RCS) {
/* reset RCS and preserve other R/WC bits */
iputdword(chip, ICHREG(GLOB_STA),
tmp & ~(ICH_SRI|ICH_PRI|ICH_TRI|ICH_GSCI));
if (! chip->in_ac97_init)
dev_err(chip->card->dev,
"codec_read %d: read timeout for register 0x%x\n",
ac97->num, reg);
res = 0xffff;
}
}
if (reg == AC97_GPIO_STATUS)
iagetword(chip, 0); /* clear semaphore */
return res;
}
/*
* DMA I/O
*/
static void snd_intel8x0m_setup_periods(struct intel8x0m *chip, struct ichdev *ichdev)
{
int idx;
__le32 *bdbar = ichdev->bdbar;
unsigned long port = ichdev->reg_offset;
iputdword(chip, port + ICH_REG_OFF_BDBAR, ichdev->bdbar_addr);
if (ichdev->size == ichdev->fragsize) {
ichdev->ack_reload = ichdev->ack = 2;
ichdev->fragsize1 = ichdev->fragsize >> 1;
for (idx = 0; idx < (ICH_REG_LVI_MASK + 1) * 2; idx += 4) {
bdbar[idx + 0] = cpu_to_le32(ichdev->physbuf);
bdbar[idx + 1] = cpu_to_le32(0x80000000 | /* interrupt on completion */
ichdev->fragsize1 >> chip->pcm_pos_shift);
bdbar[idx + 2] = cpu_to_le32(ichdev->physbuf + (ichdev->size >> 1));
bdbar[idx + 3] = cpu_to_le32(0x80000000 | /* interrupt on completion */
ichdev->fragsize1 >> chip->pcm_pos_shift);
}
ichdev->frags = 2;
} else {
ichdev->ack_reload = ichdev->ack = 1;
ichdev->fragsize1 = ichdev->fragsize;
for (idx = 0; idx < (ICH_REG_LVI_MASK + 1) * 2; idx += 2) {
bdbar[idx + 0] = cpu_to_le32(ichdev->physbuf + (((idx >> 1) * ichdev->fragsize) % ichdev->size));
bdbar[idx + 1] = cpu_to_le32(0x80000000 | /* interrupt on completion */
ichdev->fragsize >> chip->pcm_pos_shift);
/*
dev_dbg(chip->card->dev, "bdbar[%i] = 0x%x [0x%x]\n",
idx + 0, bdbar[idx + 0], bdbar[idx + 1]);
*/
}
ichdev->frags = ichdev->size / ichdev->fragsize;
}
iputbyte(chip, port + ICH_REG_OFF_LVI, ichdev->lvi = ICH_REG_LVI_MASK);
ichdev->civ = 0;
iputbyte(chip, port + ICH_REG_OFF_CIV, 0);
ichdev->lvi_frag = ICH_REG_LVI_MASK % ichdev->frags;
ichdev->position = 0;
#if 0
dev_dbg(chip->card->dev,
"lvi_frag = %i, frags = %i, period_size = 0x%x, period_size1 = 0x%x\n",
ichdev->lvi_frag, ichdev->frags, ichdev->fragsize,
ichdev->fragsize1);
#endif
/* clear interrupts */
iputbyte(chip, port + ichdev->roff_sr, ICH_FIFOE | ICH_BCIS | ICH_LVBCI);
}
/*
* Interrupt handler
*/
static inline void snd_intel8x0m_update(struct intel8x0m *chip, struct ichdev *ichdev)
{
unsigned long port = ichdev->reg_offset;
int civ, i, step;
int ack = 0;
civ = igetbyte(chip, port + ICH_REG_OFF_CIV);
if (civ == ichdev->civ) {
step = 1;
ichdev->civ++;
ichdev->civ &= ICH_REG_LVI_MASK;
} else {
step = civ - ichdev->civ;
if (step < 0)
step += ICH_REG_LVI_MASK + 1;
ichdev->civ = civ;
}
ichdev->position += step * ichdev->fragsize1;
ichdev->position %= ichdev->size;
ichdev->lvi += step;
ichdev->lvi &= ICH_REG_LVI_MASK;
iputbyte(chip, port + ICH_REG_OFF_LVI, ichdev->lvi);
for (i = 0; i < step; i++) {
ichdev->lvi_frag++;
ichdev->lvi_frag %= ichdev->frags;
ichdev->bdbar[ichdev->lvi * 2] = cpu_to_le32(ichdev->physbuf +
ichdev->lvi_frag *
ichdev->fragsize1);
#if 0
dev_dbg(chip->card->dev,
"new: bdbar[%i] = 0x%x [0x%x], prefetch = %i, all = 0x%x, 0x%x\n",
ichdev->lvi * 2, ichdev->bdbar[ichdev->lvi * 2],
ichdev->bdbar[ichdev->lvi * 2 + 1], inb(ICH_REG_OFF_PIV + port),
inl(port + 4), inb(port + ICH_REG_OFF_CR));
#endif
if (--ichdev->ack == 0) {
ichdev->ack = ichdev->ack_reload;
ack = 1;
}
}
if (ack && ichdev->substream) {
spin_unlock(&chip->reg_lock);
snd_pcm_period_elapsed(ichdev->substream);
spin_lock(&chip->reg_lock);
}
iputbyte(chip, port + ichdev->roff_sr, ICH_FIFOE | ICH_BCIS | ICH_LVBCI);
}
static irqreturn_t snd_intel8x0m_interrupt(int irq, void *dev_id)
{
struct intel8x0m *chip = dev_id;
struct ichdev *ichdev;
unsigned int status;
unsigned int i;
spin_lock(&chip->reg_lock);
status = igetdword(chip, chip->int_sta_reg);
if (status == 0xffffffff) { /* we are not yet resumed */
spin_unlock(&chip->reg_lock);
return IRQ_NONE;
}
if ((status & chip->int_sta_mask) == 0) {
if (status)
iputdword(chip, chip->int_sta_reg, status);
spin_unlock(&chip->reg_lock);
return IRQ_NONE;
}
for (i = 0; i < chip->bdbars_count; i++) {
ichdev = &chip->ichd[i];
if (status & ichdev->int_sta_mask)
snd_intel8x0m_update(chip, ichdev);
}
/* ack them */
iputdword(chip, chip->int_sta_reg, status & chip->int_sta_mask);
spin_unlock(&chip->reg_lock);
return IRQ_HANDLED;
}
/*
* PCM part
*/
static int snd_intel8x0m_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct intel8x0m *chip = snd_pcm_substream_chip(substream);
struct ichdev *ichdev = get_ichdev(substream);
unsigned char val = 0;
unsigned long port = ichdev->reg_offset;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
val = ICH_IOCE | ICH_STARTBM;
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
val = 0;
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
val = ICH_IOCE;
break;
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
val = ICH_IOCE | ICH_STARTBM;
break;
default:
return -EINVAL;
}
iputbyte(chip, port + ICH_REG_OFF_CR, val);
if (cmd == SNDRV_PCM_TRIGGER_STOP) {
/* wait until DMA stopped */
while (!(igetbyte(chip, port + ichdev->roff_sr) & ICH_DCH)) ;
/* reset whole DMA things */
iputbyte(chip, port + ICH_REG_OFF_CR, ICH_RESETREGS);
}
return 0;
}
static snd_pcm_uframes_t snd_intel8x0m_pcm_pointer(struct snd_pcm_substream *substream)
{
struct intel8x0m *chip = snd_pcm_substream_chip(substream);
struct ichdev *ichdev = get_ichdev(substream);
size_t ptr1, ptr;
ptr1 = igetword(chip, ichdev->reg_offset + ichdev->roff_picb) << chip->pcm_pos_shift;
if (ptr1 != 0)
ptr = ichdev->fragsize1 - ptr1;
else
ptr = 0;
ptr += ichdev->position;
if (ptr >= ichdev->size)
return 0;
return bytes_to_frames(substream->runtime, ptr);
}
static int snd_intel8x0m_pcm_prepare(struct snd_pcm_substream *substream)
{
struct intel8x0m *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
struct ichdev *ichdev = get_ichdev(substream);
ichdev->physbuf = runtime->dma_addr;
ichdev->size = snd_pcm_lib_buffer_bytes(substream);
ichdev->fragsize = snd_pcm_lib_period_bytes(substream);
snd_ac97_write(ichdev->ac97, AC97_LINE1_RATE, runtime->rate);
snd_ac97_write(ichdev->ac97, AC97_LINE1_LEVEL, 0);
snd_intel8x0m_setup_periods(chip, ichdev);
return 0;
}
static const struct snd_pcm_hardware snd_intel8x0m_stream =
{
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_PAUSE |
SNDRV_PCM_INFO_RESUME),
.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 = 1,
.channels_max = 1,
.buffer_bytes_max = 64 * 1024,
.period_bytes_min = 32,
.period_bytes_max = 64 * 1024,
.periods_min = 1,
.periods_max = 1024,
.fifo_size = 0,
};
static int snd_intel8x0m_pcm_open(struct snd_pcm_substream *substream, struct ichdev *ichdev)
{
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,
};
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
ichdev->substream = substream;
runtime->hw = snd_intel8x0m_stream;
err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
&hw_constraints_rates);
if ( err < 0 )
return err;
runtime->private_data = ichdev;
return 0;
}
static int snd_intel8x0m_playback_open(struct snd_pcm_substream *substream)
{
struct intel8x0m *chip = snd_pcm_substream_chip(substream);
return snd_intel8x0m_pcm_open(substream, &chip->ichd[ICHD_MDMOUT]);
}
static int snd_intel8x0m_playback_close(struct snd_pcm_substream *substream)
{
struct intel8x0m *chip = snd_pcm_substream_chip(substream);
chip->ichd[ICHD_MDMOUT].substream = NULL;
return 0;
}
static int snd_intel8x0m_capture_open(struct snd_pcm_substream *substream)
{
struct intel8x0m *chip = snd_pcm_substream_chip(substream);
return snd_intel8x0m_pcm_open(substream, &chip->ichd[ICHD_MDMIN]);
}
static int snd_intel8x0m_capture_close(struct snd_pcm_substream *substream)
{
struct intel8x0m *chip = snd_pcm_substream_chip(substream);
chip->ichd[ICHD_MDMIN].substream = NULL;
return 0;
}
static const struct snd_pcm_ops snd_intel8x0m_playback_ops = {
.open = snd_intel8x0m_playback_open,
.close = snd_intel8x0m_playback_close,
.prepare = snd_intel8x0m_pcm_prepare,
.trigger = snd_intel8x0m_pcm_trigger,
.pointer = snd_intel8x0m_pcm_pointer,
};
static const struct snd_pcm_ops snd_intel8x0m_capture_ops = {
.open = snd_intel8x0m_capture_open,
.close = snd_intel8x0m_capture_close,
.prepare = snd_intel8x0m_pcm_prepare,
.trigger = snd_intel8x0m_pcm_trigger,
.pointer = snd_intel8x0m_pcm_pointer,
};
struct ich_pcm_table {
char *suffix;
const struct snd_pcm_ops *playback_ops;
const struct snd_pcm_ops *capture_ops;
size_t prealloc_size;
size_t prealloc_max_size;
int ac97_idx;
};
static int snd_intel8x0m_pcm1(struct intel8x0m *chip, int device,
const struct ich_pcm_table *rec)
{
struct snd_pcm *pcm;
int err;
char name[32];
if (rec->suffix)
sprintf(name, "Intel ICH - %s", rec->suffix);
else
strcpy(name, "Intel ICH");
err = snd_pcm_new(chip->card, name, device,
rec->playback_ops ? 1 : 0,
rec->capture_ops ? 1 : 0, &pcm);
if (err < 0)
return err;
if (rec->playback_ops)
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, rec->playback_ops);
if (rec->capture_ops)
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, rec->capture_ops);
pcm->private_data = chip;
pcm->info_flags = 0;
pcm->dev_class = SNDRV_PCM_CLASS_MODEM;
if (rec->suffix)
sprintf(pcm->name, "%s - %s", chip->card->shortname, rec->suffix);
else
strcpy(pcm->name, chip->card->shortname);
chip->pcm[device] = pcm;
snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
&chip->pci->dev,
rec->prealloc_size,
rec->prealloc_max_size);
return 0;
}
static const struct ich_pcm_table intel_pcms[] = {
{
.suffix = "Modem",
.playback_ops = &snd_intel8x0m_playback_ops,
.capture_ops = &snd_intel8x0m_capture_ops,
.prealloc_size = 32 * 1024,
.prealloc_max_size = 64 * 1024,
},
};
static int snd_intel8x0m_pcm(struct intel8x0m *chip)
{
int i, tblsize, device, err;
const struct ich_pcm_table *tbl, *rec;
#if 1
tbl = intel_pcms;
tblsize = 1;
#else
switch (chip->device_type) {
case DEVICE_NFORCE:
tbl = nforce_pcms;
tblsize = ARRAY_SIZE(nforce_pcms);
break;
case DEVICE_ALI:
tbl = ali_pcms;
tblsize = ARRAY_SIZE(ali_pcms);
break;
default:
tbl = intel_pcms;
tblsize = 2;
break;
}
#endif
device = 0;
for (i = 0; i < tblsize; i++) {
rec = tbl + i;
if (i > 0 && rec->ac97_idx) {
/* activate PCM only when associated AC'97 codec */
if (! chip->ichd[rec->ac97_idx].ac97)
continue;
}
err = snd_intel8x0m_pcm1(chip, device, rec);
if (err < 0)
return err;
device++;
}
chip->pcm_devs = device;
return 0;
}
/*
* Mixer part
*/
static void snd_intel8x0m_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
{
struct intel8x0m *chip = bus->private_data;
chip->ac97_bus = NULL;
}
static void snd_intel8x0m_mixer_free_ac97(struct snd_ac97 *ac97)
{
struct intel8x0m *chip = ac97->private_data;
chip->ac97 = NULL;
}
static int snd_intel8x0m_mixer(struct intel8x0m *chip, int ac97_clock)
{
struct snd_ac97_bus *pbus;
struct snd_ac97_template ac97;
struct snd_ac97 *x97;
int err;
unsigned int glob_sta = 0;
static const struct snd_ac97_bus_ops ops = {
.write = snd_intel8x0m_codec_write,
.read = snd_intel8x0m_codec_read,
};
chip->in_ac97_init = 1;
memset(&ac97, 0, sizeof(ac97));
ac97.private_data = chip;
ac97.private_free = snd_intel8x0m_mixer_free_ac97;
ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE;
glob_sta = igetdword(chip, ICHREG(GLOB_STA));
err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus);
if (err < 0)
goto __err;
pbus->private_free = snd_intel8x0m_mixer_free_ac97_bus;
if (ac97_clock >= 8000 && ac97_clock <= 48000)
pbus->clock = ac97_clock;
chip->ac97_bus = pbus;
ac97.pci = chip->pci;
ac97.num = glob_sta & ICH_SCR ? 1 : 0;
err = snd_ac97_mixer(pbus, &ac97, &x97);
if (err < 0) {
dev_err(chip->card->dev,
"Unable to initialize codec #%d\n", ac97.num);
if (ac97.num == 0)
goto __err;
return err;
}
chip->ac97 = x97;
if(ac97_is_modem(x97) && !chip->ichd[ICHD_MDMIN].ac97) {
chip->ichd[ICHD_MDMIN].ac97 = x97;
chip->ichd[ICHD_MDMOUT].ac97 = x97;
}
chip->in_ac97_init = 0;
return 0;
__err:
/* clear the cold-reset bit for the next chance */
if (chip->device_type != DEVICE_ALI)
iputdword(chip, ICHREG(GLOB_CNT),
igetdword(chip, ICHREG(GLOB_CNT)) & ~ICH_AC97COLD);
return err;
}
/*
*
*/
static int snd_intel8x0m_ich_chip_init(struct intel8x0m *chip, int probing)
{
unsigned long end_time;
unsigned int cnt, status, nstatus;
/* put logic to right state */
/* first clear status bits */
status = ICH_RCS | ICH_MIINT | ICH_MOINT;
cnt = igetdword(chip, ICHREG(GLOB_STA));
iputdword(chip, ICHREG(GLOB_STA), cnt & status);
/* ACLink on, 2 channels */
cnt = igetdword(chip, ICHREG(GLOB_CNT));
cnt &= ~(ICH_ACLINK);
/* finish cold or do warm reset */
cnt |= (cnt & ICH_AC97COLD) == 0 ? ICH_AC97COLD : ICH_AC97WARM;
iputdword(chip, ICHREG(GLOB_CNT), cnt);
usleep_range(500, 1000); /* give warm reset some time */
end_time = jiffies + HZ / 4;
do {
if ((igetdword(chip, ICHREG(GLOB_CNT)) & ICH_AC97WARM) == 0)
goto __ok;
schedule_timeout_uninterruptible(1);
} while (time_after_eq(end_time, jiffies));
dev_err(chip->card->dev, "AC'97 warm reset still in progress? [0x%x]\n",
igetdword(chip, ICHREG(GLOB_CNT)));
return -EIO;
__ok:
if (probing) {
/* wait for any codec ready status.
* Once it becomes ready it should remain ready
* as long as we do not disable the ac97 link.
*/
end_time = jiffies + HZ;
do {
status = igetdword(chip, ICHREG(GLOB_STA)) &
(ICH_PCR | ICH_SCR | ICH_TCR);
if (status)
break;
schedule_timeout_uninterruptible(1);
} while (time_after_eq(end_time, jiffies));
if (! status) {
/* no codec is found */
dev_err(chip->card->dev,
"codec_ready: codec is not ready [0x%x]\n",
igetdword(chip, ICHREG(GLOB_STA)));
return -EIO;
}
/* up to two codecs (modem cannot be tertiary with ICH4) */
nstatus = ICH_PCR | ICH_SCR;
/* wait for other codecs ready status. */
end_time = jiffies + HZ / 4;
while (status != nstatus && time_after_eq(end_time, jiffies)) {
schedule_timeout_uninterruptible(1);
status |= igetdword(chip, ICHREG(GLOB_STA)) & nstatus;
}
} else {
/* resume phase */
status = 0;
if (chip->ac97)
status |= get_ich_codec_bit(chip, chip->ac97->num);
/* wait until all the probed codecs are ready */
end_time = jiffies + HZ;
do {
nstatus = igetdword(chip, ICHREG(GLOB_STA)) &
(ICH_PCR | ICH_SCR | ICH_TCR);
if (status == nstatus)
break;
schedule_timeout_uninterruptible(1);
} while (time_after_eq(end_time, jiffies));
}
if (chip->device_type == DEVICE_SIS) {
/* unmute the output on SIS7013 */
iputword(chip, 0x4c, igetword(chip, 0x4c) | 1);
}
return 0;
}
static int snd_intel8x0m_chip_init(struct intel8x0m *chip, int probing)
{
unsigned int i;
int err;
err = snd_intel8x0m_ich_chip_init(chip, probing);
if (err < 0)
return err;
iagetword(chip, 0); /* clear semaphore flag */
/* disable interrupts */
for (i = 0; i < chip->bdbars_count; i++)
iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, 0x00);
/* reset channels */
for (i = 0; i < chip->bdbars_count; i++)
iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, ICH_RESETREGS);
/* initialize Buffer Descriptor Lists */
for (i = 0; i < chip->bdbars_count; i++)
iputdword(chip, ICH_REG_OFF_BDBAR + chip->ichd[i].reg_offset, chip->ichd[i].bdbar_addr);
return 0;
}
static void snd_intel8x0m_free(struct snd_card *card)
{
struct intel8x0m *chip = card->private_data;
unsigned int i;
if (chip->irq < 0)
goto __hw_end;
/* disable interrupts */
for (i = 0; i < chip->bdbars_count; i++)
iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, 0x00);
/* reset channels */
for (i = 0; i < chip->bdbars_count; i++)
iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, ICH_RESETREGS);
__hw_end:
if (chip->irq >= 0)
free_irq(chip->irq, chip);
}
/*
* power management
*/
static int intel8x0m_suspend(struct device *dev)
{
struct snd_card *card = dev_get_drvdata(dev);
struct intel8x0m *chip = card->private_data;
snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
snd_ac97_suspend(chip->ac97);
if (chip->irq >= 0) {
free_irq(chip->irq, chip);
chip->irq = -1;
card->sync_irq = -1;
}
return 0;
}
static int intel8x0m_resume(struct device *dev)
{
struct pci_dev *pci = to_pci_dev(dev);
struct snd_card *card = dev_get_drvdata(dev);
struct intel8x0m *chip = card->private_data;
if (request_irq(pci->irq, snd_intel8x0m_interrupt,
IRQF_SHARED, KBUILD_MODNAME, chip)) {
dev_err(dev, "unable to grab IRQ %d, disabling device\n",
pci->irq);
snd_card_disconnect(card);
return -EIO;
}
chip->irq = pci->irq;
card->sync_irq = chip->irq;
snd_intel8x0m_chip_init(chip, 0);
snd_ac97_resume(chip->ac97);