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ali5451.c
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/*
* Matt Wu <Matt_Wu@acersoftech.com.cn>
* Apr 26, 2001
* Routines for control of ALi pci audio M5451
*
* BUGS:
* --
*
* TODO:
* --
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public Lcodecnse as published by
* the Free Software Foundation; either version 2 of the Lcodecnse, 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 Lcodecnse for more details.
*
* You should have received a copy of the GNU General Public Lcodecnse
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#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/dma-mapping.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/info.h>
#include <sound/ac97_codec.h>
#include <sound/mpu401.h>
#include <sound/initval.h>
MODULE_AUTHOR("Matt Wu <Matt_Wu@acersoftech.com.cn>");
MODULE_DESCRIPTION("ALI M5451");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{ALI,M5451,pci},{ALI,M5451}}");
static int index = SNDRV_DEFAULT_IDX1; /* Index */
static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */
static int pcm_channels = 32;
static bool spdif;
module_param(index, int, 0444);
MODULE_PARM_DESC(index, "Index value for ALI M5451 PCI Audio.");
module_param(id, charp, 0444);
MODULE_PARM_DESC(id, "ID string for ALI M5451 PCI Audio.");
module_param(pcm_channels, int, 0444);
MODULE_PARM_DESC(pcm_channels, "PCM Channels");
module_param(spdif, bool, 0444);
MODULE_PARM_DESC(spdif, "Support SPDIF I/O");
/* just for backward compatibility */
static bool enable;
module_param(enable, bool, 0444);
/*
* Constants definition
*/
#define DEVICE_ID_ALI5451 ((PCI_VENDOR_ID_AL<<16)|PCI_DEVICE_ID_AL_M5451)
#define ALI_CHANNELS 32
#define ALI_PCM_IN_CHANNEL 31
#define ALI_SPDIF_IN_CHANNEL 19
#define ALI_SPDIF_OUT_CHANNEL 15
#define ALI_CENTER_CHANNEL 24
#define ALI_LEF_CHANNEL 23
#define ALI_SURR_LEFT_CHANNEL 26
#define ALI_SURR_RIGHT_CHANNEL 25
#define ALI_MODEM_IN_CHANNEL 21
#define ALI_MODEM_OUT_CHANNEL 20
#define SNDRV_ALI_VOICE_TYPE_PCM 01
#define SNDRV_ALI_VOICE_TYPE_OTH 02
#define ALI_5451_V02 0x02
/*
* Direct Registers
*/
#define ALI_LEGACY_DMAR0 0x00 /* ADR0 */
#define ALI_LEGACY_DMAR4 0x04 /* CNT0 */
#define ALI_LEGACY_DMAR11 0x0b /* MOD */
#define ALI_LEGACY_DMAR15 0x0f /* MMR */
#define ALI_MPUR0 0x20
#define ALI_MPUR1 0x21
#define ALI_MPUR2 0x22
#define ALI_MPUR3 0x23
#define ALI_AC97_WRITE 0x40
#define ALI_AC97_READ 0x44
#define ALI_SCTRL 0x48
#define ALI_SPDIF_OUT_ENABLE 0x20
#define ALI_SCTRL_LINE_IN2 (1 << 9)
#define ALI_SCTRL_GPIO_IN2 (1 << 13)
#define ALI_SCTRL_LINE_OUT_EN (1 << 20)
#define ALI_SCTRL_GPIO_OUT_EN (1 << 23)
#define ALI_SCTRL_CODEC1_READY (1 << 24)
#define ALI_SCTRL_CODEC2_READY (1 << 25)
#define ALI_AC97_GPIO 0x4c
#define ALI_AC97_GPIO_ENABLE 0x8000
#define ALI_AC97_GPIO_DATA_SHIFT 16
#define ALI_SPDIF_CS 0x70
#define ALI_SPDIF_CTRL 0x74
#define ALI_SPDIF_IN_FUNC_ENABLE 0x02
#define ALI_SPDIF_IN_CH_STATUS 0x40
#define ALI_SPDIF_OUT_CH_STATUS 0xbf
#define ALI_START 0x80
#define ALI_STOP 0x84
#define ALI_CSPF 0x90
#define ALI_AINT 0x98
#define ALI_GC_CIR 0xa0
#define ENDLP_IE 0x00001000
#define MIDLP_IE 0x00002000
#define ALI_AINTEN 0xa4
#define ALI_VOLUME 0xa8
#define ALI_SBDELTA_DELTA_R 0xac
#define ALI_MISCINT 0xb0
#define ADDRESS_IRQ 0x00000020
#define TARGET_REACHED 0x00008000
#define MIXER_OVERFLOW 0x00000800
#define MIXER_UNDERFLOW 0x00000400
#define GPIO_IRQ 0x01000000
#define ALI_SBBL_SBCL 0xc0
#define ALI_SBCTRL_SBE2R_SBDD 0xc4
#define ALI_STIMER 0xc8
#define ALI_GLOBAL_CONTROL 0xd4
#define ALI_SPDIF_OUT_SEL_PCM 0x00000400 /* bit 10 */
#define ALI_SPDIF_IN_SUPPORT 0x00000800 /* bit 11 */
#define ALI_SPDIF_OUT_CH_ENABLE 0x00008000 /* bit 15 */
#define ALI_SPDIF_IN_CH_ENABLE 0x00080000 /* bit 19 */
#define ALI_PCM_IN_ENABLE 0x80000000 /* bit 31 */
#define ALI_CSO_ALPHA_FMS 0xe0
#define ALI_LBA 0xe4
#define ALI_ESO_DELTA 0xe8
#define ALI_GVSEL_PAN_VOC_CTRL_EC 0xf0
#define ALI_EBUF1 0xf4
#define ALI_EBUF2 0xf8
#define ALI_REG(codec, x) ((codec)->port + x)
#define MAX_CODECS 2
struct snd_ali;
struct snd_ali_voice;
struct snd_ali_channel_control {
/* register data */
struct REGDATA {
unsigned int start;
unsigned int stop;
unsigned int aint;
unsigned int ainten;
} data;
/* register addresses */
struct REGS {
unsigned int start;
unsigned int stop;
unsigned int aint;
unsigned int ainten;
unsigned int ac97read;
unsigned int ac97write;
} regs;
};
struct snd_ali_voice {
unsigned int number;
unsigned int use :1,
pcm :1,
midi :1,
mode :1,
synth :1,
running :1;
/* PCM data */
struct snd_ali *codec;
struct snd_pcm_substream *substream;
struct snd_ali_voice *extra;
int eso; /* final ESO value for channel */
int count; /* runtime->period_size */
/* --- */
void *private_data;
void (*private_free)(void *private_data);
};
struct snd_alidev {
struct snd_ali_voice voices[ALI_CHANNELS];
unsigned int chcnt; /* num of opened channels */
unsigned int chmap; /* bitmap for opened channels */
unsigned int synthcount;
};
#define ALI_GLOBAL_REGS 56
#define ALI_CHANNEL_REGS 8
struct snd_ali_image {
u32 regs[ALI_GLOBAL_REGS];
u32 channel_regs[ALI_CHANNELS][ALI_CHANNEL_REGS];
};
struct snd_ali {
int irq;
unsigned long port;
unsigned char revision;
unsigned int hw_initialized :1;
unsigned int spdif_support :1;
struct pci_dev *pci;
struct pci_dev *pci_m1533;
struct pci_dev *pci_m7101;
struct snd_card *card;
struct snd_pcm *pcm[MAX_CODECS];
struct snd_alidev synth;
struct snd_ali_channel_control chregs;
/* S/PDIF Mask */
unsigned int spdif_mask;
unsigned int spurious_irq_count;
unsigned int spurious_irq_max_delta;
unsigned int num_of_codecs;
struct snd_ac97_bus *ac97_bus;
struct snd_ac97 *ac97[MAX_CODECS];
unsigned short ac97_ext_id;
unsigned short ac97_ext_status;
spinlock_t reg_lock;
spinlock_t voice_alloc;
#ifdef CONFIG_PM_SLEEP
struct snd_ali_image *image;
#endif
};
static const struct pci_device_id snd_ali_ids[] = {
{PCI_DEVICE(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M5451), 0, 0, 0},
{0, }
};
MODULE_DEVICE_TABLE(pci, snd_ali_ids);
static void snd_ali_clear_voices(struct snd_ali *, unsigned int, unsigned int);
static unsigned short snd_ali_codec_peek(struct snd_ali *, int, unsigned short);
static void snd_ali_codec_poke(struct snd_ali *, int, unsigned short,
unsigned short);
/*
* AC97 ACCESS
*/
static inline unsigned int snd_ali_5451_peek(struct snd_ali *codec,
unsigned int port)
{
return (unsigned int)inl(ALI_REG(codec, port));
}
static inline void snd_ali_5451_poke(struct snd_ali *codec,
unsigned int port,
unsigned int val)
{
outl((unsigned int)val, ALI_REG(codec, port));
}
static int snd_ali_codec_ready(struct snd_ali *codec,
unsigned int port)
{
unsigned long end_time;
unsigned int res;
end_time = jiffies + msecs_to_jiffies(250);
for (;;) {
res = snd_ali_5451_peek(codec,port);
if (!(res & 0x8000))
return 0;
if (!time_after_eq(end_time, jiffies))
break;
schedule_timeout_uninterruptible(1);
}
snd_ali_5451_poke(codec, port, res & ~0x8000);
dev_dbg(codec->card->dev, "ali_codec_ready: codec is not ready.\n ");
return -EIO;
}
static int snd_ali_stimer_ready(struct snd_ali *codec)
{
unsigned long end_time;
unsigned long dwChk1,dwChk2;
dwChk1 = snd_ali_5451_peek(codec, ALI_STIMER);
end_time = jiffies + msecs_to_jiffies(250);
for (;;) {
dwChk2 = snd_ali_5451_peek(codec, ALI_STIMER);
if (dwChk2 != dwChk1)
return 0;
if (!time_after_eq(end_time, jiffies))
break;
schedule_timeout_uninterruptible(1);
}
dev_err(codec->card->dev, "ali_stimer_read: stimer is not ready.\n");
return -EIO;
}
static void snd_ali_codec_poke(struct snd_ali *codec,int secondary,
unsigned short reg,
unsigned short val)
{
unsigned int dwVal;
unsigned int port;
if (reg >= 0x80) {
dev_err(codec->card->dev,
"ali_codec_poke: reg(%xh) invalid.\n", reg);
return;
}
port = codec->chregs.regs.ac97write;
if (snd_ali_codec_ready(codec, port) < 0)
return;
if (snd_ali_stimer_ready(codec) < 0)
return;
dwVal = (unsigned int) (reg & 0xff);
dwVal |= 0x8000 | (val << 16);
if (secondary)
dwVal |= 0x0080;
if (codec->revision == ALI_5451_V02)
dwVal |= 0x0100;
snd_ali_5451_poke(codec, port, dwVal);
return ;
}
static unsigned short snd_ali_codec_peek(struct snd_ali *codec,
int secondary,
unsigned short reg)
{
unsigned int dwVal;
unsigned int port;
if (reg >= 0x80) {
dev_err(codec->card->dev,
"ali_codec_peek: reg(%xh) invalid.\n", reg);
return ~0;
}
port = codec->chregs.regs.ac97read;
if (snd_ali_codec_ready(codec, port) < 0)
return ~0;
if (snd_ali_stimer_ready(codec) < 0)
return ~0;
dwVal = (unsigned int) (reg & 0xff);
dwVal |= 0x8000; /* bit 15*/
if (secondary)
dwVal |= 0x0080;
snd_ali_5451_poke(codec, port, dwVal);
if (snd_ali_stimer_ready(codec) < 0)
return ~0;
if (snd_ali_codec_ready(codec, port) < 0)
return ~0;
return (snd_ali_5451_peek(codec, port) & 0xffff0000) >> 16;
}
static void snd_ali_codec_write(struct snd_ac97 *ac97,
unsigned short reg,
unsigned short val )
{
struct snd_ali *codec = ac97->private_data;
dev_dbg(codec->card->dev, "codec_write: reg=%xh data=%xh.\n", reg, val);
if (reg == AC97_GPIO_STATUS) {
outl((val << ALI_AC97_GPIO_DATA_SHIFT) | ALI_AC97_GPIO_ENABLE,
ALI_REG(codec, ALI_AC97_GPIO));
return;
}
snd_ali_codec_poke(codec, ac97->num, reg, val);
return ;
}
static unsigned short snd_ali_codec_read(struct snd_ac97 *ac97,
unsigned short reg)
{
struct snd_ali *codec = ac97->private_data;
dev_dbg(codec->card->dev, "codec_read reg=%xh.\n", reg);
return snd_ali_codec_peek(codec, ac97->num, reg);
}
/*
* AC97 Reset
*/
static int snd_ali_reset_5451(struct snd_ali *codec)
{
struct pci_dev *pci_dev;
unsigned short wCount, wReg;
unsigned int dwVal;
pci_dev = codec->pci_m1533;
if (pci_dev) {
pci_read_config_dword(pci_dev, 0x7c, &dwVal);
pci_write_config_dword(pci_dev, 0x7c, dwVal | 0x08000000);
mdelay(5);
pci_read_config_dword(pci_dev, 0x7c, &dwVal);
pci_write_config_dword(pci_dev, 0x7c, dwVal & 0xf7ffffff);
mdelay(5);
}
pci_dev = codec->pci;
pci_read_config_dword(pci_dev, 0x44, &dwVal);
pci_write_config_dword(pci_dev, 0x44, dwVal | 0x000c0000);
udelay(500);
pci_read_config_dword(pci_dev, 0x44, &dwVal);
pci_write_config_dword(pci_dev, 0x44, dwVal & 0xfffbffff);
mdelay(5);
wCount = 200;
while(wCount--) {
wReg = snd_ali_codec_peek(codec, 0, AC97_POWERDOWN);
if ((wReg & 0x000f) == 0x000f)
return 0;
mdelay(5);
}
/* non-fatal if you have a non PM capable codec */
/* dev_warn(codec->card->dev, "ali5451: reset time out\n"); */
return 0;
}
/*
* ALI 5451 Controller
*/
static void snd_ali_enable_special_channel(struct snd_ali *codec,
unsigned int channel)
{
unsigned long dwVal;
dwVal = inl(ALI_REG(codec, ALI_GLOBAL_CONTROL));
dwVal |= 1 << (channel & 0x0000001f);
outl(dwVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
}
static void snd_ali_disable_special_channel(struct snd_ali *codec,
unsigned int channel)
{
unsigned long dwVal;
dwVal = inl(ALI_REG(codec, ALI_GLOBAL_CONTROL));
dwVal &= ~(1 << (channel & 0x0000001f));
outl(dwVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
}
static void snd_ali_enable_address_interrupt(struct snd_ali *codec)
{
unsigned int gc;
gc = inl(ALI_REG(codec, ALI_GC_CIR));
gc |= ENDLP_IE;
gc |= MIDLP_IE;
outl( gc, ALI_REG(codec, ALI_GC_CIR));
}
static void snd_ali_disable_address_interrupt(struct snd_ali *codec)
{
unsigned int gc;
gc = inl(ALI_REG(codec, ALI_GC_CIR));
gc &= ~ENDLP_IE;
gc &= ~MIDLP_IE;
outl(gc, ALI_REG(codec, ALI_GC_CIR));
}
static void snd_ali_disable_voice_irq(struct snd_ali *codec,
unsigned int channel)
{
unsigned int mask;
struct snd_ali_channel_control *pchregs = &(codec->chregs);
dev_dbg(codec->card->dev, "disable_voice_irq channel=%d\n", channel);
mask = 1 << (channel & 0x1f);
pchregs->data.ainten = inl(ALI_REG(codec, pchregs->regs.ainten));
pchregs->data.ainten &= ~mask;
outl(pchregs->data.ainten, ALI_REG(codec, pchregs->regs.ainten));
}
static int snd_ali_alloc_pcm_channel(struct snd_ali *codec, int channel)
{
unsigned int idx = channel & 0x1f;
if (codec->synth.chcnt >= ALI_CHANNELS){
dev_err(codec->card->dev,
"ali_alloc_pcm_channel: no free channels.\n");
return -1;
}
if (!(codec->synth.chmap & (1 << idx))) {
codec->synth.chmap |= 1 << idx;
codec->synth.chcnt++;
dev_dbg(codec->card->dev, "alloc_pcm_channel no. %d.\n", idx);
return idx;
}
return -1;
}
static int snd_ali_find_free_channel(struct snd_ali * codec, int rec)
{
int idx;
int result = -1;
dev_dbg(codec->card->dev,
"find_free_channel: for %s\n", rec ? "rec" : "pcm");
/* recording */
if (rec) {
if (codec->spdif_support &&
(inl(ALI_REG(codec, ALI_GLOBAL_CONTROL)) &
ALI_SPDIF_IN_SUPPORT))
idx = ALI_SPDIF_IN_CHANNEL;
else
idx = ALI_PCM_IN_CHANNEL;
result = snd_ali_alloc_pcm_channel(codec, idx);
if (result >= 0)
return result;
else {
dev_err(codec->card->dev,
"ali_find_free_channel: record channel is busy now.\n");
return -1;
}
}
/* playback... */
if (codec->spdif_support &&
(inl(ALI_REG(codec, ALI_GLOBAL_CONTROL)) &
ALI_SPDIF_OUT_CH_ENABLE)) {
idx = ALI_SPDIF_OUT_CHANNEL;
result = snd_ali_alloc_pcm_channel(codec, idx);
if (result >= 0)
return result;
else
dev_err(codec->card->dev,
"ali_find_free_channel: S/PDIF out channel is in busy now.\n");
}
for (idx = 0; idx < ALI_CHANNELS; idx++) {
result = snd_ali_alloc_pcm_channel(codec, idx);
if (result >= 0)
return result;
}
dev_err(codec->card->dev, "ali_find_free_channel: no free channels.\n");
return -1;
}
static void snd_ali_free_channel_pcm(struct snd_ali *codec, int channel)
{
unsigned int idx = channel & 0x0000001f;
dev_dbg(codec->card->dev, "free_channel_pcm channel=%d\n", channel);
if (channel < 0 || channel >= ALI_CHANNELS)
return;
if (!(codec->synth.chmap & (1 << idx))) {
dev_err(codec->card->dev,
"ali_free_channel_pcm: channel %d is not in use.\n",
channel);
return;
} else {
codec->synth.chmap &= ~(1 << idx);
codec->synth.chcnt--;
}
}
static void snd_ali_stop_voice(struct snd_ali *codec, unsigned int channel)
{
unsigned int mask = 1 << (channel & 0x1f);
dev_dbg(codec->card->dev, "stop_voice: channel=%d\n", channel);
outl(mask, ALI_REG(codec, codec->chregs.regs.stop));
}
/*
* S/PDIF Part
*/
static void snd_ali_delay(struct snd_ali *codec,int interval)
{
unsigned long begintimer,currenttimer;
begintimer = inl(ALI_REG(codec, ALI_STIMER));
currenttimer = inl(ALI_REG(codec, ALI_STIMER));
while (currenttimer < begintimer + interval) {
if (snd_ali_stimer_ready(codec) < 0)
break;
currenttimer = inl(ALI_REG(codec, ALI_STIMER));
cpu_relax();
}
}
static void snd_ali_detect_spdif_rate(struct snd_ali *codec)
{
u16 wval;
u16 count = 0;
u8 bval, R1 = 0, R2;
bval = inb(ALI_REG(codec, ALI_SPDIF_CTRL + 1));
bval |= 0x1F;
outb(bval, ALI_REG(codec, ALI_SPDIF_CTRL + 1));
while ((R1 < 0x0b || R1 > 0x0e) && R1 != 0x12 && count <= 50000) {
count ++;
snd_ali_delay(codec, 6);
bval = inb(ALI_REG(codec, ALI_SPDIF_CTRL + 1));
R1 = bval & 0x1F;
}
if (count > 50000) {
dev_err(codec->card->dev, "ali_detect_spdif_rate: timeout!\n");
return;
}
for (count = 0; count <= 50000; count++) {
snd_ali_delay(codec, 6);
bval = inb(ALI_REG(codec,ALI_SPDIF_CTRL + 1));
R2 = bval & 0x1F;
if (R2 != R1)
R1 = R2;
else
break;
}
if (count > 50000) {
dev_err(codec->card->dev, "ali_detect_spdif_rate: timeout!\n");
return;
}
if (R2 >= 0x0b && R2 <= 0x0e) {
wval = inw(ALI_REG(codec, ALI_SPDIF_CTRL + 2));
wval &= 0xe0f0;
wval |= (0x09 << 8) | 0x05;
outw(wval, ALI_REG(codec, ALI_SPDIF_CTRL + 2));
bval = inb(ALI_REG(codec, ALI_SPDIF_CS + 3)) & 0xf0;
outb(bval | 0x02, ALI_REG(codec, ALI_SPDIF_CS + 3));
} else if (R2 == 0x12) {
wval = inw(ALI_REG(codec, ALI_SPDIF_CTRL + 2));
wval &= 0xe0f0;
wval |= (0x0e << 8) | 0x08;
outw(wval, ALI_REG(codec, ALI_SPDIF_CTRL + 2));
bval = inb(ALI_REG(codec,ALI_SPDIF_CS + 3)) & 0xf0;
outb(bval | 0x03, ALI_REG(codec, ALI_SPDIF_CS + 3));
}
}
static unsigned int snd_ali_get_spdif_in_rate(struct snd_ali *codec)
{
u32 dwRate;
u8 bval;
bval = inb(ALI_REG(codec, ALI_SPDIF_CTRL));
bval &= 0x7f;
bval |= 0x40;
outb(bval, ALI_REG(codec, ALI_SPDIF_CTRL));
snd_ali_detect_spdif_rate(codec);
bval = inb(ALI_REG(codec, ALI_SPDIF_CS + 3));
bval &= 0x0f;
switch (bval) {
case 0: dwRate = 44100; break;
case 1: dwRate = 48000; break;
case 2: dwRate = 32000; break;
default: dwRate = 0; break;
}
return dwRate;
}
static void snd_ali_enable_spdif_in(struct snd_ali *codec)
{
unsigned int dwVal;
dwVal = inl(ALI_REG(codec, ALI_GLOBAL_CONTROL));
dwVal |= ALI_SPDIF_IN_SUPPORT;
outl(dwVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
dwVal = inb(ALI_REG(codec, ALI_SPDIF_CTRL));
dwVal |= 0x02;
outb(dwVal, ALI_REG(codec, ALI_SPDIF_CTRL));
snd_ali_enable_special_channel(codec, ALI_SPDIF_IN_CHANNEL);
}
static void snd_ali_disable_spdif_in(struct snd_ali *codec)
{
unsigned int dwVal;
dwVal = inl(ALI_REG(codec, ALI_GLOBAL_CONTROL));
dwVal &= ~ALI_SPDIF_IN_SUPPORT;
outl(dwVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
snd_ali_disable_special_channel(codec, ALI_SPDIF_IN_CHANNEL);
}
static void snd_ali_set_spdif_out_rate(struct snd_ali *codec, unsigned int rate)
{
unsigned char bVal;
unsigned int dwRate;
switch (rate) {
case 32000: dwRate = 0x300; break;
case 48000: dwRate = 0x200; break;
default: dwRate = 0; break;
}
bVal = inb(ALI_REG(codec, ALI_SPDIF_CTRL));
bVal &= (unsigned char)(~(1<<6));
bVal |= 0x80; /* select right */
outb(bVal, ALI_REG(codec, ALI_SPDIF_CTRL));
outb(dwRate | 0x20, ALI_REG(codec, ALI_SPDIF_CS + 2));
bVal &= ~0x80; /* select left */
outb(bVal, ALI_REG(codec, ALI_SPDIF_CTRL));
outw(rate | 0x10, ALI_REG(codec, ALI_SPDIF_CS + 2));
}
static void snd_ali_enable_spdif_out(struct snd_ali *codec)
{
unsigned short wVal;
unsigned char bVal;
struct pci_dev *pci_dev;
pci_dev = codec->pci_m1533;
if (pci_dev == NULL)
return;
pci_read_config_byte(pci_dev, 0x61, &bVal);
bVal |= 0x40;
pci_write_config_byte(pci_dev, 0x61, bVal);
pci_read_config_byte(pci_dev, 0x7d, &bVal);
bVal |= 0x01;
pci_write_config_byte(pci_dev, 0x7d, bVal);
pci_read_config_byte(pci_dev, 0x7e, &bVal);
bVal &= (~0x20);
bVal |= 0x10;
pci_write_config_byte(pci_dev, 0x7e, bVal);
bVal = inb(ALI_REG(codec, ALI_SCTRL));
outb(bVal | ALI_SPDIF_OUT_ENABLE, ALI_REG(codec, ALI_SCTRL));
bVal = inb(ALI_REG(codec, ALI_SPDIF_CTRL));
outb(bVal & ALI_SPDIF_OUT_CH_STATUS, ALI_REG(codec, ALI_SPDIF_CTRL));
wVal = inw(ALI_REG(codec, ALI_GLOBAL_CONTROL));
wVal |= ALI_SPDIF_OUT_SEL_PCM;
outw(wVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
snd_ali_disable_special_channel(codec, ALI_SPDIF_OUT_CHANNEL);
}
static void snd_ali_enable_spdif_chnout(struct snd_ali *codec)
{
unsigned short wVal;
wVal = inw(ALI_REG(codec, ALI_GLOBAL_CONTROL));
wVal &= ~ALI_SPDIF_OUT_SEL_PCM;
outw(wVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
/*
wVal = inw(ALI_REG(codec, ALI_SPDIF_CS));
if (flag & ALI_SPDIF_OUT_NON_PCM)
wVal |= 0x0002;
else
wVal &= (~0x0002);
outw(wVal, ALI_REG(codec, ALI_SPDIF_CS));
*/
snd_ali_enable_special_channel(codec, ALI_SPDIF_OUT_CHANNEL);
}
static void snd_ali_disable_spdif_chnout(struct snd_ali *codec)
{
unsigned short wVal;
wVal = inw(ALI_REG(codec, ALI_GLOBAL_CONTROL));
wVal |= ALI_SPDIF_OUT_SEL_PCM;
outw(wVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
snd_ali_enable_special_channel(codec, ALI_SPDIF_OUT_CHANNEL);
}
static void snd_ali_disable_spdif_out(struct snd_ali *codec)
{
unsigned char bVal;
bVal = inb(ALI_REG(codec, ALI_SCTRL));
outb(bVal & ~ALI_SPDIF_OUT_ENABLE, ALI_REG(codec, ALI_SCTRL));
snd_ali_disable_spdif_chnout(codec);
}
static void snd_ali_update_ptr(struct snd_ali *codec, int channel)
{
struct snd_ali_voice *pvoice;
struct snd_ali_channel_control *pchregs;
unsigned int old, mask;
pchregs = &(codec->chregs);
/* check if interrupt occurred for channel */
old = pchregs->data.aint;
mask = 1U << (channel & 0x1f);
if (!(old & mask))
return;
pvoice = &codec->synth.voices[channel];
udelay(100);
spin_lock(&codec->reg_lock);
if (pvoice->pcm && pvoice->substream) {
/* pcm interrupt */
if (pvoice->running) {
dev_dbg(codec->card->dev,
"update_ptr: cso=%4.4x cspf=%d.\n",
inw(ALI_REG(codec, ALI_CSO_ALPHA_FMS + 2)),
(inl(ALI_REG(codec, ALI_CSPF)) & mask) == mask);
spin_unlock(&codec->reg_lock);
snd_pcm_period_elapsed(pvoice->substream);
spin_lock(&codec->reg_lock);
} else {
snd_ali_stop_voice(codec, channel);
snd_ali_disable_voice_irq(codec, channel);
}
} else if (codec->synth.voices[channel].synth) {
/* synth interrupt */
} else if (codec->synth.voices[channel].midi) {
/* midi interrupt */
} else {
/* unknown interrupt */
snd_ali_stop_voice(codec, channel);
snd_ali_disable_voice_irq(codec, channel);
}
spin_unlock(&codec->reg_lock);
outl(mask,ALI_REG(codec,pchregs->regs.aint));
pchregs->data.aint = old & (~mask);
}
static irqreturn_t snd_ali_card_interrupt(int irq, void *dev_id)
{
struct snd_ali *codec = dev_id;
int channel;
unsigned int audio_int;
struct snd_ali_channel_control *pchregs;
if (codec == NULL || !codec->hw_initialized)
return IRQ_NONE;
audio_int = inl(ALI_REG(codec, ALI_MISCINT));
if (!audio_int)
return IRQ_NONE;
pchregs = &(codec->chregs);
if (audio_int & ADDRESS_IRQ) {
/* get interrupt status for all channels */
pchregs->data.aint = inl(ALI_REG(codec, pchregs->regs.aint));
for (channel = 0; channel < ALI_CHANNELS; channel++)
snd_ali_update_ptr(codec, channel);
}
outl((TARGET_REACHED | MIXER_OVERFLOW | MIXER_UNDERFLOW),
ALI_REG(codec, ALI_MISCINT));
return IRQ_HANDLED;
}
static struct snd_ali_voice *snd_ali_alloc_voice(struct snd_ali * codec,
int type, int rec, int channel)
{
struct snd_ali_voice *pvoice;
int idx;
dev_dbg(codec->card->dev, "alloc_voice: type=%d rec=%d\n", type, rec);
spin_lock_irq(&codec->voice_alloc);
if (type == SNDRV_ALI_VOICE_TYPE_PCM) {
idx = channel > 0 ? snd_ali_alloc_pcm_channel(codec, channel) :
snd_ali_find_free_channel(codec,rec);
if (idx < 0) {
dev_err(codec->card->dev, "ali_alloc_voice: err.\n");
spin_unlock_irq(&codec->voice_alloc);
return NULL;
}
pvoice = &(codec->synth.voices[idx]);
pvoice->codec = codec;
pvoice->use = 1;
pvoice->pcm = 1;
pvoice->mode = rec;
spin_unlock_irq(&codec->voice_alloc);
return pvoice;
}
spin_unlock_irq(&codec->voice_alloc);
return NULL;
}
static void snd_ali_free_voice(struct snd_ali * codec,
struct snd_ali_voice *pvoice)
{
void (*private_free)(void *);
void *private_data;
dev_dbg(codec->card->dev, "free_voice: channel=%d\n", pvoice->number);
if (!pvoice->use)
return;
snd_ali_clear_voices(codec, pvoice->number, pvoice->number);
spin_lock_irq(&codec->voice_alloc);
private_free = pvoice->private_free;
private_data = pvoice->private_data;
pvoice->private_free = NULL;
pvoice->private_data = NULL;
if (pvoice->pcm)
snd_ali_free_channel_pcm(codec, pvoice->number);
pvoice->use = pvoice->pcm = pvoice->synth = 0;
pvoice->substream = NULL;
spin_unlock_irq(&codec->voice_alloc);
if (private_free)
private_free(private_data);
}
static void snd_ali_clear_voices(struct snd_ali *codec,
unsigned int v_min,
unsigned int v_max)
{
unsigned int i;
for (i = v_min; i <= v_max; i++) {
snd_ali_stop_voice(codec, i);
snd_ali_disable_voice_irq(codec, i);
}
}
static void snd_ali_write_voice_regs(struct snd_ali *codec,
unsigned int Channel,
unsigned int LBA,
unsigned int CSO,
unsigned int ESO,
unsigned int DELTA,
unsigned int ALPHA_FMS,
unsigned int GVSEL,
unsigned int PAN,
unsigned int VOL,
unsigned int CTRL,