Linux Kernel iMX6
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/*
* ALSA modem driver for Intel ICH (i8x0) chipsets
*
* Copyright (c) 2000 Jaroslav Kysela <perex@suse.cz>
*
* This is modified (by Sasha Khapyorsky <sashak@alsa-project.org>) version
* of ALSA ICH sound driver intel8x0.c .
*
*
* 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 <linux/moduleparam.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@suse.cz>");
MODULE_DESCRIPTION("Intel 82801AA,82901AB,i810,i820,i830,i840,i845,MX440; SiS 7013; NVidia MCP/2/2S/3 modems");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Intel,82801AA-ICH},"
"{Intel,82901AB-ICH0},"
"{Intel,82801BA-ICH2},"
"{Intel,82801CA-ICH3},"
"{Intel,82801DB-ICH4},"
"{Intel,ICH5},"
"{Intel,ICH6},"
"{Intel,ICH7},"
"{Intel,MX440},"
"{SiS,7013},"
"{NVidia,NForce Modem},"
"{NVidia,NForce2 Modem},"
"{NVidia,NForce2s Modem},"
"{NVidia,NForce3 Modem},"
"{AMD,AMD768}}");
static int index = -2; /* Exclude the first card */
static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */
static int ac97_clock = 0;
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 int 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) (ichdev_t *)(substream->runtime->private_data)
typedef struct {
unsigned int ichd; /* ich device number */
unsigned long reg_offset; /* offset to bmaddr */
u32 *bdbar; /* CPU address (32bit) */
unsigned int bdbar_addr; /* PCI bus address (32bit) */
snd_pcm_substream_t *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 */
ac97_t *ac97;
} ichdev_t;
typedef struct _snd_intel8x0m intel8x0_t;
struct _snd_intel8x0m {
unsigned int device_type;
int irq;
unsigned int mmio;
unsigned long addr;
void __iomem *remap_addr;
unsigned int bm_mmio;
unsigned long bmaddr;
void __iomem *remap_bmaddr;
struct pci_dev *pci;
snd_card_t *card;
int pcm_devs;
snd_pcm_t *pcm[2];
ichdev_t ichd[2];
unsigned int in_ac97_init: 1;
ac97_bus_t *ac97_bus;
ac97_t *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 struct pci_device_id snd_intel8x0m_ids[] = {
{ 0x8086, 0x2416, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* 82801AA */
{ 0x8086, 0x2426, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* 82901AB */
{ 0x8086, 0x2446, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* 82801BA */
{ 0x8086, 0x2486, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* ICH3 */
{ 0x8086, 0x24c6, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* ICH4 */
{ 0x8086, 0x24d6, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* ICH5 */
{ 0x8086, 0x266d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* ICH6 */
{ 0x8086, 0x27dd, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* ICH7 */
{ 0x8086, 0x7196, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* 440MX */
{ 0x1022, 0x7446, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* AMD768 */
{ 0x1039, 0x7013, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_SIS }, /* SI7013 */
{ 0x10de, 0x01c1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_NFORCE }, /* NFORCE */
{ 0x10de, 0x0069, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_NFORCE }, /* NFORCE2 */
{ 0x10de, 0x0089, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_NFORCE }, /* NFORCE2s */
{ 0x10de, 0x00d9, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_NFORCE }, /* NFORCE3 */
#if 0
{ 0x1022, 0x746d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* AMD8111 */
{ 0x10b9, 0x5455, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALI }, /* Ali5455 */
#endif
{ 0, }
};
MODULE_DEVICE_TABLE(pci, snd_intel8x0m_ids);
/*
* Lowlevel I/O - busmaster
*/
static u8 igetbyte(intel8x0_t *chip, u32 offset)
{
if (chip->bm_mmio)
return readb(chip->remap_bmaddr + offset);
else
return inb(chip->bmaddr + offset);
}
static u16 igetword(intel8x0_t *chip, u32 offset)
{
if (chip->bm_mmio)
return readw(chip->remap_bmaddr + offset);
else
return inw(chip->bmaddr + offset);
}
static u32 igetdword(intel8x0_t *chip, u32 offset)
{
if (chip->bm_mmio)
return readl(chip->remap_bmaddr + offset);
else
return inl(chip->bmaddr + offset);
}
static void iputbyte(intel8x0_t *chip, u32 offset, u8 val)
{
if (chip->bm_mmio)
writeb(val, chip->remap_bmaddr + offset);
else
outb(val, chip->bmaddr + offset);
}
static void iputword(intel8x0_t *chip, u32 offset, u16 val)
{
if (chip->bm_mmio)
writew(val, chip->remap_bmaddr + offset);
else
outw(val, chip->bmaddr + offset);
}
static void iputdword(intel8x0_t *chip, u32 offset, u32 val)
{
if (chip->bm_mmio)
writel(val, chip->remap_bmaddr + offset);
else
outl(val, chip->bmaddr + offset);
}
/*
* Lowlevel I/O - AC'97 registers
*/
static u16 iagetword(intel8x0_t *chip, u32 offset)
{
if (chip->mmio)
return readw(chip->remap_addr + offset);
else
return inw(chip->addr + offset);
}
static void iaputword(intel8x0_t *chip, u32 offset, u16 val)
{
if (chip->mmio)
writew(val, chip->remap_addr + offset);
else
outw(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(intel8x0_t *chip, unsigned int codec)
{
static unsigned int codec_bit[3] = {
ICH_PCR, ICH_SCR, ICH_TCR
};
snd_assert(codec < 3, return ICH_PCR);
return codec_bit[codec];
}
static int snd_intel8x0m_codec_semaphore(intel8x0_t *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 existant) 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. */
snd_printk("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_intel8x0_codec_write(ac97_t *ac97,
unsigned short reg,
unsigned short val)
{
intel8x0_t *chip = ac97->private_data;
if (snd_intel8x0m_codec_semaphore(chip, ac97->num) < 0) {
if (! chip->in_ac97_init)
snd_printk("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_intel8x0_codec_read(ac97_t *ac97,
unsigned short reg)
{
intel8x0_t *chip = ac97->private_data;
unsigned short res;
unsigned int tmp;
if (snd_intel8x0m_codec_semaphore(chip, ac97->num) < 0) {
if (! chip->in_ac97_init)
snd_printk("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);
if ((tmp = igetdword(chip, ICHREG(GLOB_STA))) & 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)
snd_printk("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_intel8x0_setup_periods(intel8x0_t *chip, ichdev_t *ichdev)
{
int idx;
u32 *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);
// printk("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
printk("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_intel8x0_update(intel8x0_t *chip, ichdev_t *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) {
// snd_printd("civ same %d\n", 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;
// if (step != 1)
// snd_printd("step = %d, %d -> %d\n", step, ichdev->civ, civ);
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);
// printk("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));
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_intel8x0_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
intel8x0_t *chip = dev_id;
ichdev_t *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_intel8x0_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_intel8x0_pcm_trigger(snd_pcm_substream_t *substream, int cmd)
{
intel8x0_t *chip = snd_pcm_substream_chip(substream);
ichdev_t *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 int snd_intel8x0_hw_params(snd_pcm_substream_t * substream,
snd_pcm_hw_params_t * hw_params)
{
return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
}
static int snd_intel8x0_hw_free(snd_pcm_substream_t * substream)
{
return snd_pcm_lib_free_pages(substream);
}
static snd_pcm_uframes_t snd_intel8x0_pcm_pointer(snd_pcm_substream_t * substream)
{
intel8x0_t *chip = snd_pcm_substream_chip(substream);
ichdev_t *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(snd_pcm_substream_t * substream)
{
intel8x0_t *chip = snd_pcm_substream_chip(substream);
snd_pcm_runtime_t *runtime = substream->runtime;
ichdev_t *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_intel8x0_setup_periods(chip, ichdev);
return 0;
}
static snd_pcm_hardware_t 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(snd_pcm_substream_t * substream, ichdev_t *ichdev)
{
static unsigned int rates[] = { 8000, 9600, 12000, 16000 };
static snd_pcm_hw_constraint_list_t hw_constraints_rates = {
.count = ARRAY_SIZE(rates),
.list = rates,
.mask = 0,
};
snd_pcm_runtime_t *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(snd_pcm_substream_t * substream)
{
intel8x0_t *chip = snd_pcm_substream_chip(substream);
return snd_intel8x0m_pcm_open(substream, &chip->ichd[ICHD_MDMOUT]);
}
static int snd_intel8x0m_playback_close(snd_pcm_substream_t * substream)
{
intel8x0_t *chip = snd_pcm_substream_chip(substream);
chip->ichd[ICHD_MDMOUT].substream = NULL;
return 0;
}
static int snd_intel8x0m_capture_open(snd_pcm_substream_t * substream)
{
intel8x0_t *chip = snd_pcm_substream_chip(substream);
return snd_intel8x0m_pcm_open(substream, &chip->ichd[ICHD_MDMIN]);
}
static int snd_intel8x0m_capture_close(snd_pcm_substream_t * substream)
{
intel8x0_t *chip = snd_pcm_substream_chip(substream);
chip->ichd[ICHD_MDMIN].substream = NULL;
return 0;
}
static snd_pcm_ops_t snd_intel8x0m_playback_ops = {
.open = snd_intel8x0m_playback_open,
.close = snd_intel8x0m_playback_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_intel8x0_hw_params,
.hw_free = snd_intel8x0_hw_free,
.prepare = snd_intel8x0m_pcm_prepare,
.trigger = snd_intel8x0_pcm_trigger,
.pointer = snd_intel8x0_pcm_pointer,
};
static snd_pcm_ops_t snd_intel8x0m_capture_ops = {
.open = snd_intel8x0m_capture_open,
.close = snd_intel8x0m_capture_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_intel8x0_hw_params,
.hw_free = snd_intel8x0_hw_free,
.prepare = snd_intel8x0m_pcm_prepare,
.trigger = snd_intel8x0_pcm_trigger,
.pointer = snd_intel8x0_pcm_pointer,
};
struct ich_pcm_table {
char *suffix;
snd_pcm_ops_t *playback_ops;
snd_pcm_ops_t *capture_ops;
size_t prealloc_size;
size_t prealloc_max_size;
int ac97_idx;
};
static int __devinit snd_intel8x0_pcm1(intel8x0_t *chip, int device, struct ich_pcm_table *rec)
{
snd_pcm_t *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_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
snd_dma_pci_data(chip->pci),
rec->prealloc_size,
rec->prealloc_max_size);
return 0;
}
static struct ich_pcm_table intel_pcms[] __devinitdata = {
{
.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 __devinit snd_intel8x0_pcm(intel8x0_t *chip)
{
int i, tblsize, device, err;
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_intel8x0_pcm1(chip, device, rec);
if (err < 0)
return err;
device++;
}
chip->pcm_devs = device;
return 0;
}
/*
* Mixer part
*/
static void snd_intel8x0_mixer_free_ac97_bus(ac97_bus_t *bus)
{
intel8x0_t *chip = bus->private_data;
chip->ac97_bus = NULL;
}
static void snd_intel8x0_mixer_free_ac97(ac97_t *ac97)
{
intel8x0_t *chip = ac97->private_data;
chip->ac97 = NULL;
}
static int __devinit snd_intel8x0_mixer(intel8x0_t *chip, int ac97_clock)
{
ac97_bus_t *pbus;
ac97_template_t ac97;
ac97_t *x97;
int err;
unsigned int glob_sta = 0;
static ac97_bus_ops_t ops = {
.write = snd_intel8x0_codec_write,
.read = snd_intel8x0_codec_read,
};
chip->in_ac97_init = 1;
memset(&ac97, 0, sizeof(ac97));
ac97.private_data = chip;
ac97.private_free = snd_intel8x0_mixer_free_ac97;
ac97.scaps = AC97_SCAP_SKIP_AUDIO;
glob_sta = igetdword(chip, ICHREG(GLOB_STA));
if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus)) < 0)
goto __err;
pbus->private_free = snd_intel8x0_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;
if ((err = snd_ac97_mixer(pbus, &ac97, &x97)) < 0) {
snd_printk(KERN_ERR "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;
}
/*
*
*/
#define do_delay(chip) do {\
set_current_state(TASK_UNINTERRUPTIBLE);\
schedule_timeout(1);\
} while (0)
static int snd_intel8x0m_ich_chip_init(intel8x0_t *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);
end_time = (jiffies + (HZ / 4)) + 1;
do {
if ((igetdword(chip, ICHREG(GLOB_CNT)) & ICH_AC97WARM) == 0)
goto __ok;
do_delay(chip);
} while (time_after_eq(end_time, jiffies));
snd_printk("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;
do_delay(chip);
} while (time_after_eq(end_time, jiffies));
if (! status) {
/* no codec is found */
snd_printk(KERN_ERR "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)) {
do_delay(chip);
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;
do_delay(chip);
} while (time_after_eq(end_time, jiffies));
}
if (chip->device_type == DEVICE_SIS) {
/* unmute the output on SIS7012 */
iputword(chip, 0x4c, igetword(chip, 0x4c) | 1);
}
return 0;
}
static int snd_intel8x0_chip_init(intel8x0_t *chip, int probing)
{
unsigned int i;
int err;
if ((err = snd_intel8x0m_ich_chip_init(chip, probing)) < 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 int snd_intel8x0_free(intel8x0_t *chip)
{
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);
/* --- */
synchronize_irq(chip->irq);
__hw_end:
if (chip->bdbars.area)
snd_dma_free_pages(&chip->bdbars);
if (chip->remap_addr)
iounmap(chip->remap_addr);
if (chip->remap_bmaddr)
iounmap(chip->remap_bmaddr);
if (chip->irq >= 0)
free_irq(chip->irq, (void *)chip);
pci_release_regions(chip->pci);
pci_disable_device(chip->pci);
kfree(chip);
return 0;
}
#ifdef CONFIG_PM
/*
* power management
*/
static int intel8x0m_suspend(snd_card_t *card, pm_message_t state)
{
intel8x0_t *chip = card->pm_private_data;
int i;
for (i = 0; i < chip->pcm_devs; i++)
snd_pcm_suspend_all(chip->pcm[i]);
if (chip->ac97)
snd_ac97_suspend(chip->ac97);
pci_disable_device(chip->pci);
return 0;
}
static int intel8x0m_resume(snd_card_t *card)
{
intel8x0_t *chip = card->pm_private_data;
pci_enable_device(chip->pci);
pci_set_master(chip->pci);
snd_intel8x0_chip_init(chip, 0);
if (chip->ac97)
snd_ac97_resume(chip->ac97);
return 0;
}
#endif /* CONFIG_PM */
static void snd_intel8x0m_proc_read(snd_info_entry_t * entry,
snd_info_buffer_t * buffer)
{
intel8x0_t *chip = entry->private_data;
unsigned int tmp;
snd_iprintf(buffer, "Intel8x0m\n\n");
if (chip->device_type == DEVICE_ALI)
return;
tmp = igetdword(chip, ICHREG(GLOB_STA));
snd_iprintf(buffer, "Global control : 0x%08x\n", igetdword(chip, ICHREG(GLOB_CNT)));
snd_iprintf(buffer, "Global status : 0x%08x\n", tmp);
snd_iprintf(buffer, "AC'97 codecs ready :%s%s%s%s\n",
tmp & ICH_PCR ? " primary" : "",
tmp & ICH_SCR ? " secondary" : "",
tmp & ICH_TCR ? " tertiary" : "",
(tmp & (ICH_PCR | ICH_SCR | ICH_TCR)) == 0 ? " none" : "");
}
static void __devinit snd_intel8x0m_proc_init(intel8x0_t * chip)
{
snd_info_entry_t *entry;
if (! snd_card_proc_new(chip->card, "intel8x0m", &entry))
snd_info_set_text_ops(entry, chip, 1024, snd_intel8x0m_proc_read);
}
static int snd_intel8x0_dev_free(snd_device_t *device)
{
intel8x0_t *chip = device->device_data;
return snd_intel8x0_free(chip);
}
struct ich_reg_info {
unsigned int int_sta_mask;
unsigned int offset;
};
static int __devinit snd_intel8x0m_create(snd_card_t * card,
struct pci_dev *pci,
unsigned long device_type,
intel8x0_t ** r_intel8x0)
{
intel8x0_t *chip;
int err;
unsigned int i;
unsigned int int_sta_masks;
ichdev_t *ichdev;
static snd_device_ops_t ops = {
.dev_free = snd_intel8x0_dev_free,
};
static struct ich_reg_info intel_regs[2] = {
{ ICH_MIINT, 0 },
{ ICH_MOINT, 0x10 },
};
struct ich_reg_info *tbl;
*r_intel8x0 = NULL;
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);
chip->device_type = device_type;
chip->card = card;
chip->pci = pci;
chip->irq = -1;
if ((err = pci_request_regions(pci, card->shortname)) < 0) {
kfree(chip);
pci_disable_device(pci);
return err;
}
if (device_type == DEVICE_ALI) {
/* ALI5455 has no ac97 region */
chip->bmaddr = pci_resource_start(pci, 0);
goto port_inited;
}
if (pci_resource_flags(pci, 2) & IORESOURCE_MEM) { /* ICH4 and Nforce */
chip->mmio = 1;
chip->addr = pci_resource_start(pci, 2);
chip->remap_addr = ioremap_nocache(chip->addr,
pci_resource_len(pci, 2));
if (chip->remap_addr == NULL) {
snd_printk("AC'97 space ioremap problem\n");
snd_intel8x0_free(chip);
return -EIO;
}
} else {
chip->addr = pci_resource_start(pci, 0);
}
if (pci_resource_flags(pci, 3) & IORESOURCE_MEM) { /* ICH4 */
chip->bm_mmio = 1;
chip->bmaddr = pci_resource_start(pci, 3);
chip->remap_bmaddr = ioremap_nocache(chip->bmaddr,
pci_resource_len(pci, 3));
if (chip->remap_bmaddr == NULL) {
snd_printk("Controller space ioremap problem\n");
snd_intel8x0_free(chip);
return -EIO;
}
} else {
chip->bmaddr = pci_resource_start(pci, 1);
}
port_inited:
if (request_irq(pci->irq, snd_intel8x0_interrupt, SA_INTERRUPT|SA_SHIRQ, card->shortname, (void *)chip)) {
snd_printk("unable to grab IRQ %d\n", pci->irq);
snd_intel8x0_free(chip);
return -EBUSY;
}
chip->irq = pci->irq;
pci_set_master(pci);
synchronize_irq(chip->irq);
/* initialize offsets */
chip->bdbars_count = 2;
tbl = intel_regs;
for (i = 0; i < chip->bdbars_count; i++) {
ichdev = &chip->ichd[i];
ichdev->ichd = i;
ichdev->reg_offset = tbl[i].offset;
ichdev->int_sta_mask = tbl[i].int_sta_mask;
if (device_type == DEVICE_SIS) {
/* SiS 7013 swaps the registers */
ichdev->roff_sr = ICH_REG_OFF_PICB;
ichdev->roff_picb = ICH_REG_OFF_SR;
} else {
ichdev->roff_sr = ICH_REG_OFF_SR;
ichdev->roff_picb = ICH_REG_OFF_PICB;
}
if (device_type == DEVICE_ALI)
ichdev->ali_slot = (ichdev->reg_offset - 0x40) / 0x10;
}
/* SIS7013 handles the pcm data in bytes, others are in words */
chip->pcm_pos_shift = (device_type == DEVICE_SIS) ? 0 : 1;
/* allocate buffer descriptor lists */
/* the start of each lists must be aligned to 8 bytes */
if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
chip->bdbars_count * sizeof(u32) * ICH_MAX_FRAGS * 2,
&chip->bdbars) < 0) {
snd_intel8x0_free(chip);
return -ENOMEM;
}
/* tables must be aligned to 8 bytes here, but the kernel pages
are much bigger, so we don't care (on i386) */
int_sta_masks = 0;
for (i = 0; i < chip->bdbars_count; i++) {
ichdev = &chip->ichd[i];
ichdev->bdbar = ((u32 *)chip->bdbars.area) + (i * ICH_MAX_FRAGS * 2);
ichdev->bdbar_addr = chip->bdbars.addr + (i * sizeof(u32) * ICH_MAX_FRAGS * 2);
int_sta_masks |= ichdev->int_sta_mask;
}
chip->int_sta_reg = ICH_REG_GLOB_STA;
chip->int_sta_mask = int_sta_masks;
if ((err = snd_intel8x0_chip_init(chip, 1)) < 0) {
snd_intel8x0_free(chip);
return err;
}
snd_card_set_pm_callback(card, intel8x0m_suspend, intel8x0m_resume, chip);
if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
snd_intel8x0_free(chip);
return err;
}
snd_card_set_dev(card, &pci->dev);
*r_intel8x0 = chip;
return 0;
}
static struct shortname_table {
unsigned int id;
const char *s;
} shortnames[] __devinitdata = {
{ PCI_DEVICE_ID_INTEL_82801AA_6, "Intel 82801AA-ICH" },
{ PCI_DEVICE_ID_INTEL_82801AB_6, "Intel 82901AB-ICH0" },
{ PCI_DEVICE_ID_INTEL_82801BA_6, "Intel 82801BA-ICH2" },
{ PCI_DEVICE_ID_INTEL_440MX_6, "Intel 440MX" },
{ PCI_DEVICE_ID_INTEL_82801CA_6, "Intel 82801CA-ICH3" },
{ PCI_DEVICE_ID_INTEL_82801DB_6, "Intel 82801DB-ICH4" },
{ PCI_DEVICE_ID_INTEL_82801EB_6, "Intel ICH5" },
{ PCI_DEVICE_ID_INTEL_ICH6_17, "Intel ICH6" },
{ PCI_DEVICE_ID_INTEL_ICH7_19, "Intel ICH7" },
{ 0x7446, "AMD AMD768" },
{ PCI_DEVICE_ID_SI_7013, "SiS SI7013" },
{ PCI_DEVICE_ID_NVIDIA_MCP1_MODEM, "NVidia nForce" },
{ PCI_DEVICE_ID_NVIDIA_MCP2_MODEM, "NVidia nForce2" },
{ PCI_DEVICE_ID_NVIDIA_MCP2S_MODEM, "NVidia nForce2s" },
{ PCI_DEVICE_ID_NVIDIA_MCP3_MODEM, "NVidia nForce3" },
#if 0
{ 0x5455, "ALi M5455" },
{ 0x746d, "AMD AMD8111" },
#endif
{ 0 },
};
static int __devinit snd_intel8x0m_probe(struct pci_dev *pci,
const struct pci_device_id *pci_id)
{
snd_card_t *card;
intel8x0_t *chip;
int err;
struct shortname_table *name;
card = snd_card_new(index, id, THIS_MODULE, 0);
if (card == NULL)
return -ENOMEM;
strcpy(card->driver, "ICH-MODEM");
strcpy(card->shortname, "Intel ICH");
for (name = shortnames; name->id; name++) {
if (pci->device == name->id) {
strcpy(card->shortname, name->s);
break;
}
}
strcat(card->shortname," Modem");
if ((err = snd_intel8x0m_create(card, pci, pci_id->driver_data, &chip)) < 0) {
snd_card_free(card);
return err;
}
if ((err = snd_intel8x0_mixer(chip, ac97_clock)) < 0) {
snd_card_free(card);
return err;
}
if ((err = snd_intel8x0_pcm(chip)) < 0) {
snd_card_free(card);
return err;
}
snd_intel8x0m_proc_init(chip);
sprintf(card->longname, "%s at 0x%lx, irq %i",
card->shortname, chip->addr, chip->irq);
if ((err = snd_card_register(card)) < 0) {
snd_card_free(card);
return err;
}
pci_set_drvdata(pci, card);
return 0;
}
static void __devexit snd_intel8x0m_remove(struct pci_dev *pci)
{
snd_card_free(pci_get_drvdata(pci));
pci_set_drvdata(pci, NULL);
}
static struct pci_driver driver = {
.name = "Intel ICH Modem",
.owner = THIS_MODULE,
.id_table = snd_intel8x0m_ids,
.probe = snd_intel8x0m_probe,
.remove = __devexit_p(snd_intel8x0m_remove),
SND_PCI_PM_CALLBACKS
};
static int __init alsa_card_intel8x0m_init(void)
{
return pci_register_driver(&driver);
}
static void __exit alsa_card_intel8x0m_exit(void)
{
pci_unregister_driver(&driver);
}
module_init(alsa_card_intel8x0m_init)
module_exit(alsa_card_intel8x0m_exit)