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[ALSA] Add support for the CS5535 Audio device

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Add support for the CS5535 Audio device.  I've fixed up some errors as per
Takashi's advice from the thread:

http://lkml.org/lkml/2005/9/15/119

 From: Alan Cox <alan@lxorguk.ukuu.org.uk>

        cs5535 is a 32bit x86 only device using weird CPU features

Signed-off-by: Jaya Kumar <jayakumar.alsa@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Jaya Kumar 2005-11-17 10:12:23 +01:00 committed by Jaroslav Kysela
parent c3e6f7d876
commit 9b4ffa48ae
9 changed files with 995 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
CREDITS
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@ -1883,6 +1883,7 @@ N: Jaya Kumar
E: jayalk@intworks.biz
W: http://www.intworks.biz
D: Arc monochrome LCD framebuffer driver, x86 reboot fixups
D: pirq addr, CS5535 alsa audio driver
S: Gurgaon, India
S: Kuala Lumpur, Malaysia

5
MAINTAINERS
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@ -650,6 +650,11 @@ L: linux-crypto@vger.kernel.org
T: git kernel.org:/pub/scm/linux/kernel/git/herbert/crypto-2.6.git
S: Maintained
CS5535 Audio ALSA driver
P: Jaya Kumar
M: jayakumar.alsa@gmail.com
S: Maintained
CYBERPRO FB DRIVER
P: Russell King
M: rmk@arm.linux.org.uk

4
include/linux/pci_ids.h
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@ -376,6 +376,10 @@
#define PCI_DEVICE_ID_NS_87560_USB 0x0012
#define PCI_DEVICE_ID_NS_83815 0x0020
#define PCI_DEVICE_ID_NS_83820 0x0022
#define PCI_DEVICE_ID_NS_CS5535_IDE 0x002d
#define PCI_DEVICE_ID_NS_CS5535_AUDIO 0x002e
#define PCI_DEVICE_ID_NS_CS5535_USB 0x002f
#define PCI_DEVICE_ID_NS_CS5535_VIDEO 0x0030
#define PCI_DEVICE_ID_NS_SATURN 0x0035
#define PCI_DEVICE_ID_NS_SCx200_BRIDGE 0x0500
#define PCI_DEVICE_ID_NS_SCx200_SMI 0x0501

13
sound/pci/Kconfig
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@ -359,6 +359,19 @@ config SND_ENS1370
To compile this driver as a module, choose M here: the module
will be called snd-ens1370.
config SND_CS5535AUDIO
tristate "CS5535 Audio"
depends on SND && X86 && !X86_64
select SND_PCM
select SND_AC97_CODEC
help
Say Y here to include support for audio on CS5535 chips. It is
referred to as NS CS5535 IO or AMD CS5535 IO companion in
various literature.
To compile this driver as a module, choose M here: the module
will be called snd-cs5535audio.
config SND_ENS1371
tristate "(Creative) Ensoniq AudioPCI 1371/1373"
depends on SND

1
sound/pci/Makefile
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@ -54,6 +54,7 @@ obj-$(CONFIG_SND) += \
au88x0/ \
ca0106/ \
cs46xx/ \
cs5535audio/ \
emu10k1/ \
hda/ \
ice1712/ \

8
sound/pci/cs5535audio/Makefile Normal file
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@ -0,0 +1,8 @@
#
# Makefile for cs5535audio
#
snd-cs5535audio-objs := cs5535audio.o cs5535audio_pcm.o
# Toplevel Module Dependency
obj-$(CONFIG_SND_CS5535AUDIO) += snd-cs5535audio.o

410
sound/pci/cs5535audio/cs5535audio.c Normal file
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@ -0,0 +1,410 @@
/*
* Driver for audio on multifunction CS5535 companion device
* Copyright (C) Jaya Kumar
*
* Based on Jaroslav Kysela and Takashi Iwai's examples.
* This work was sponsored by CIS(M) Sdn Bhd.
*
* 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 <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/moduleparam.h>
#include <asm/io.h>
#include <sound/driver.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/pcm.h>
#include <sound/rawmidi.h>
#include <sound/ac97_codec.h>
#include <sound/initval.h>
#include <sound/asoundef.h>
#include "cs5535audio.h"
#define DRIVER_NAME "cs5535audio"
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
static struct pci_device_id snd_cs5535audio_ids[] = {
{ PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_CS5535_AUDIO, PCI_ANY_ID,
PCI_ANY_ID, 0, 0, 0, },
{}
};
MODULE_DEVICE_TABLE(pci, snd_cs5535audio_ids);
static void wait_till_cmd_acked(cs5535audio_t *cs5535au, unsigned long timeout)
{
unsigned long tmp;
do {
tmp = cs_readl(cs5535au, ACC_CODEC_CNTL);
if (!(tmp & CMD_NEW))
break;
msleep(10);
} while (--timeout);
if (!timeout)
snd_printk(KERN_ERR "Failure writing to cs5535 codec\n");
}
static unsigned short snd_cs5535audio_codec_read(cs5535audio_t *cs5535au,
unsigned short reg)
{
unsigned long regdata;
unsigned long timeout;
unsigned long val;
regdata = ((unsigned long) reg) << 24;
regdata |= ACC_CODEC_CNTL_RD_CMD;
regdata |= CMD_NEW;
cs_writel(cs5535au, ACC_CODEC_CNTL, regdata);
wait_till_cmd_acked(cs5535au, 500);
timeout = 50;
do {
val = cs_readl(cs5535au, ACC_CODEC_STATUS);
if ( (val & STS_NEW) &&
((unsigned long) reg == ((0xFF000000 & val)>>24)) )
break;
msleep(10);
} while (--timeout);
if (!timeout)
snd_printk(KERN_ERR "Failure reading cs5535 codec\n");
return ((unsigned short) val);
}
static void snd_cs5535audio_codec_write(cs5535audio_t *cs5535au,
unsigned short reg, unsigned short val)
{
unsigned long regdata;
regdata = ((unsigned long) reg) << 24;
regdata |= (unsigned long) val;
regdata &= CMD_MASK;
regdata |= CMD_NEW;
regdata &= ACC_CODEC_CNTL_WR_CMD;
cs_writel(cs5535au, ACC_CODEC_CNTL, regdata);
wait_till_cmd_acked(cs5535au, 50);
}
static void snd_cs5535audio_ac97_codec_write(ac97_t *ac97,
unsigned short reg, unsigned short val)
{
cs5535audio_t *cs5535au = ac97->private_data;
snd_cs5535audio_codec_write(cs5535au, reg, val);
}
static unsigned short snd_cs5535audio_ac97_codec_read(ac97_t *ac97,
unsigned short reg)
{
cs5535audio_t *cs5535au = ac97->private_data;
return snd_cs5535audio_codec_read(cs5535au, reg);
}
static void snd_cs5535audio_mixer_free_ac97(ac97_t *ac97)
{
cs5535audio_t *cs5535audio = ac97->private_data;
cs5535audio->ac97 = NULL;
}
static int snd_cs5535audio_mixer(cs5535audio_t *cs5535au)
{
snd_card_t *card = cs5535au->card;
ac97_bus_t *pbus;
ac97_template_t ac97;
int err;
static ac97_bus_ops_t ops = {
.write = snd_cs5535audio_ac97_codec_write,
.read = snd_cs5535audio_ac97_codec_read,
};
if ((err = snd_ac97_bus(card, 0, &ops, NULL, &pbus)) < 0)
return err;
memset(&ac97, 0, sizeof(ac97));
ac97.scaps = AC97_SCAP_AUDIO|AC97_SCAP_SKIP_MODEM;
ac97.private_data = cs5535au;
ac97.pci = cs5535au->pci;
ac97.private_free = snd_cs5535audio_mixer_free_ac97;
if ((err = snd_ac97_mixer(pbus, &ac97, &cs5535au->ac97)) < 0) {
snd_printk("mixer failed\n");
return err;
}
return 0;
}
static void process_bm0_irq(cs5535audio_t *cs5535au)
{
u8 bm_stat;
spin_lock(&cs5535au->reg_lock);
bm_stat = cs_readb(cs5535au, ACC_BM0_STATUS);
spin_unlock(&cs5535au->reg_lock);
if (bm_stat & EOP) {
cs5535audio_dma_t *dma;
dma = cs5535au->playback_substream->runtime->private_data;
snd_pcm_period_elapsed(cs5535au->playback_substream);
} else {
snd_printk(KERN_ERR "unexpected bm0 irq src, bm_stat=%x\n",
bm_stat);
}
}
static void process_bm1_irq(cs5535audio_t *cs5535au)
{
u8 bm_stat;
spin_lock(&cs5535au->reg_lock);
bm_stat = cs_readb(cs5535au, ACC_BM1_STATUS);
spin_unlock(&cs5535au->reg_lock);
if (bm_stat & EOP) {
cs5535audio_dma_t *dma;
dma = cs5535au->capture_substream->runtime->private_data;
snd_pcm_period_elapsed(cs5535au->capture_substream);
}
}
static irqreturn_t snd_cs5535audio_interrupt(int irq, void *dev_id,
struct pt_regs *regs)
{
u16 acc_irq_stat;
u8 bm_stat;
unsigned char count;
cs5535audio_t *cs5535au = dev_id;
if (cs5535au == NULL)
return IRQ_NONE;
acc_irq_stat = cs_readw(cs5535au, ACC_IRQ_STATUS);
if (!acc_irq_stat)
return IRQ_NONE;
for (count=0; count < 10; count++) {
if (acc_irq_stat & (1<<count)) {
switch (count) {
case IRQ_STS:
cs_readl(cs5535au, ACC_GPIO_STATUS);
break;
case WU_IRQ_STS:
cs_readl(cs5535au, ACC_GPIO_STATUS);
break;
case BM0_IRQ_STS:
process_bm0_irq(cs5535au);
break;
case BM1_IRQ_STS:
process_bm1_irq(cs5535au);
break;
case BM2_IRQ_STS:
bm_stat = cs_readb(cs5535au, ACC_BM2_STATUS);
break;
case BM3_IRQ_STS:
bm_stat = cs_readb(cs5535au, ACC_BM3_STATUS);
break;
case BM4_IRQ_STS:
bm_stat = cs_readb(cs5535au, ACC_BM4_STATUS);
break;
case BM5_IRQ_STS:
bm_stat = cs_readb(cs5535au, ACC_BM5_STATUS);
break;
case BM6_IRQ_STS:
bm_stat = cs_readb(cs5535au, ACC_BM6_STATUS);
break;
case BM7_IRQ_STS:
bm_stat = cs_readb(cs5535au, ACC_BM7_STATUS);
break;
default:
snd_printk(KERN_ERR "Unexpected irq src\n");
break;
}
}
}
return IRQ_HANDLED;
}
static int snd_cs5535audio_free(cs5535audio_t *cs5535au)
{
synchronize_irq(cs5535au->irq);
pci_set_power_state(cs5535au->pci, 3);
if (cs5535au->irq >= 0)
free_irq(cs5535au->irq, cs5535au);
pci_release_regions(cs5535au->pci);
pci_disable_device(cs5535au->pci);
kfree(cs5535au);
return 0;
}
static int snd_cs5535audio_dev_free(snd_device_t *device)
{
cs5535audio_t *cs5535au = device->device_data;
return snd_cs5535audio_free(cs5535au);
}
static int __devinit snd_cs5535audio_create(snd_card_t *card,
struct pci_dev *pci,
cs5535audio_t **rcs5535au)
{
cs5535audio_t *cs5535au;
int err;
static snd_device_ops_t ops = {
.dev_free = snd_cs5535audio_dev_free,
};
*rcs5535au = NULL;
if ((err = pci_enable_device(pci)) < 0)
return err;
if (pci_set_dma_mask(pci, DMA_32BIT_MASK) < 0 ||
pci_set_consistent_dma_mask(pci, DMA_32BIT_MASK) < 0) {
printk(KERN_WARNING "unable to get 32bit dma\n");
err = -ENXIO;
goto pcifail;
}
cs5535au = kzalloc(sizeof(*cs5535au), GFP_KERNEL);
if (cs5535au == NULL) {
err = -ENOMEM;
goto pcifail;
}
spin_lock_init(&cs5535au->reg_lock);
cs5535au->card = card;
cs5535au->pci = pci;
cs5535au->irq = -1;
if ((err = pci_request_regions(pci, "CS5535 Audio")) < 0) {
kfree(cs5535au);
goto pcifail;
}
cs5535au->port = pci_resource_start(pci, 0);
if (request_irq(pci->irq, snd_cs5535audio_interrupt,
SA_INTERRUPT|SA_SHIRQ, "CS5535 Audio", cs5535au)) {
snd_printk("unable to grab IRQ %d\n", pci->irq);
err = -EBUSY;
goto sndfail;
}
cs5535au->irq = pci->irq;
pci_set_master(pci);
if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
cs5535au, &ops)) < 0)
goto sndfail;
snd_card_set_dev(card, &pci->dev);
*rcs5535au = cs5535au;
return 0;
sndfail: /* leave the device alive, just kill the snd */
snd_cs5535audio_free(cs5535au);
return err;
pcifail:
pci_disable_device(pci);
return err;
}
static int __devinit snd_cs5535audio_probe(struct pci_dev *pci,
const struct pci_device_id *pci_id)
{
static int dev;
snd_card_t *card;
cs5535audio_t *cs5535au;
int err;
if (dev >= SNDRV_CARDS)
return -ENODEV;
if (!enable[dev]) {
dev++;
return -ENOENT;
}
card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
if (card == NULL)
return -ENOMEM;
if ((err = snd_cs5535audio_create(card, pci, &cs5535au)) < 0)
goto probefail_out;
if ((err = snd_cs5535audio_mixer(cs5535au)) < 0)
goto probefail_out;
if ((err = snd_cs5535audio_pcm(cs5535au)) < 0)
goto probefail_out;
strcpy(card->driver, DRIVER_NAME);
strcpy(card->shortname, "CS5535 Audio");
sprintf(card->longname, "%s %s at 0x%lx, irq %i",
card->shortname, card->driver,
cs5535au->port, cs5535au->irq);
if ((err = snd_card_register(card)) < 0)
goto probefail_out;
pci_set_drvdata(pci, card);
dev++;
return 0;
probefail_out:
snd_card_free(card);
return err;
}
static void __devexit snd_cs5535audio_remove(struct pci_dev *pci)
{
snd_card_free(pci_get_drvdata(pci));
pci_set_drvdata(pci, NULL);
}
static struct pci_driver driver = {
.name = DRIVER_NAME,
.id_table = snd_cs5535audio_ids,
.probe = snd_cs5535audio_probe,
.remove = __devexit_p(snd_cs5535audio_remove),
};
static int __init alsa_card_cs5535audio_init(void)
{
return pci_module_init(&driver);
}
static void __exit alsa_card_cs5535audio_exit(void)
{
pci_unregister_driver(&driver);
}
module_init(alsa_card_cs5535audio_init)
module_exit(alsa_card_cs5535audio_exit)
MODULE_AUTHOR("Jaya Kumar");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("CS5535 Audio");
MODULE_SUPPORTED_DEVICE("CS5535 Audio");

123
sound/pci/cs5535audio/cs5535audio.h Normal file
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@ -0,0 +1,123 @@
#ifndef __SOUND_CS5535AUDIO_H
#define __SOUND_CS5535AUDIO_H
#define cs_writel(cs5535au, reg, val) outl(val, (int) cs5535au->port + reg)
#define cs_writeb(cs5535au, reg, val) outb(val, (int) cs5535au->port + reg)
#define cs_readl(cs5535au, reg) inl((unsigned short) (cs5535au->port + reg))
#define cs_readw(cs5535au, reg) inw((unsigned short) (cs5535au->port + reg))
#define cs_readb(cs5535au, reg) inb((unsigned short) (cs5535au->port + reg))
#define CS5535AUDIO_MAX_DESCRIPTORS 128
/* acc_codec bar0 reg addrs */
#define ACC_GPIO_STATUS 0x00
#define ACC_CODEC_STATUS 0x08
#define ACC_CODEC_CNTL 0x0C
#define ACC_IRQ_STATUS 0x12
#define ACC_BM0_CMD 0x20
#define ACC_BM1_CMD 0x28
#define ACC_BM2_CMD 0x30
#define ACC_BM3_CMD 0x38
#define ACC_BM4_CMD 0x40
#define ACC_BM5_CMD 0x48
#define ACC_BM6_CMD 0x50
#define ACC_BM7_CMD 0x58
#define ACC_BM0_PRD 0x24
#define ACC_BM1_PRD 0x2C
#define ACC_BM2_PRD 0x34
#define ACC_BM3_PRD 0x3C
#define ACC_BM4_PRD 0x44
#define ACC_BM5_PRD 0x4C
#define ACC_BM6_PRD 0x54
#define ACC_BM7_PRD 0x5C
#define ACC_BM0_STATUS 0x21
#define ACC_BM1_STATUS 0x29
#define ACC_BM2_STATUS 0x31
#define ACC_BM3_STATUS 0x39
#define ACC_BM4_STATUS 0x41
#define ACC_BM5_STATUS 0x49
#define ACC_BM6_STATUS 0x51
#define ACC_BM7_STATUS 0x59
#define ACC_BM0_PNTR 0x60
#define ACC_BM1_PNTR 0x64
#define ACC_BM2_PNTR 0x68
#define ACC_BM3_PNTR 0x6C
#define ACC_BM4_PNTR 0x70
#define ACC_BM5_PNTR 0x74
#define ACC_BM6_PNTR 0x78
#define ACC_BM7_PNTR 0x7C
/* acc_codec bar0 reg bits */
/* ACC_IRQ_STATUS */
#define IRQ_STS 0
#define WU_IRQ_STS 1
#define BM0_IRQ_STS 2
#define BM1_IRQ_STS 3
#define BM2_IRQ_STS 4
#define BM3_IRQ_STS 5
#define BM4_IRQ_STS 6
#define BM5_IRQ_STS 7
#define BM6_IRQ_STS 8
#define BM7_IRQ_STS 9
/* ACC_BMX_STATUS */
#define EOP (1<<0)
#define BM_EOP_ERR (1<<1)
/* ACC_BMX_CTL */
#define BM_CTL_EN 0x00000001
#define BM_CTL_PAUSE 0x00000011
#define BM_CTL_DIS 0x00000000
#define BM_CTL_BYTE_ORD_LE 0x00000000
#define BM_CTL_BYTE_ORD_BE 0x00000100
/* cs5535 specific ac97 codec register defines */
#define CMD_MASK 0xFF00FFFF
#define CMD_NEW 0x00010000
#define STS_NEW 0x00020000
#define PRM_RDY_STS 0x00800000
#define ACC_CODEC_CNTL_WR_CMD (~0x80000000)
#define ACC_CODEC_CNTL_RD_CMD 0x80000000
#define PRD_JMP 0x2000
#define PRD_EOP 0x4000
#define PRD_EOT 0x8000
typedef struct _snd_cs5535audio cs5535audio_t;
typedef struct snd_cs5535audio_dma cs5535audio_dma_t;
typedef struct snd_cs5535audio_dma_ops cs5535audio_dma_ops_t;
enum { CS5535AUDIO_DMA_PLAYBACK, CS5535AUDIO_DMA_CAPTURE, NUM_CS5535AUDIO_DMAS };
struct snd_cs5535audio_dma_ops {
int type;
void (*enable_dma)(cs5535audio_t *cs5535au);
void (*disable_dma)(cs5535audio_t *cs5535au);
void (*pause_dma)(cs5535audio_t *cs5535au);
void (*setup_prd)(cs5535audio_t *cs5535au, u32 prd_addr);
u32 (*read_dma_pntr)(cs5535audio_t *cs5535au);
};
typedef struct cs5535audio_dma_desc {
u32 addr;
u16 size;
u16 ctlreserved;
} cs5535audio_dma_desc_t;
struct snd_cs5535audio_dma {
const cs5535audio_dma_ops_t *ops;
struct snd_dma_buffer desc_buf;
snd_pcm_substream_t *substream;
unsigned int buf_addr, buf_bytes;
unsigned int period_bytes, periods;
};
struct _snd_cs5535audio {
snd_card_t *card;
ac97_t *ac97;
int irq;
struct pci_dev *pci;
unsigned long port;
spinlock_t reg_lock;
snd_pcm_substream_t *playback_substream;
snd_pcm_substream_t *capture_substream;
cs5535audio_dma_t dmas[NUM_CS5535AUDIO_DMAS];
};
int __devinit snd_cs5535audio_pcm(cs5535audio_t *cs5535audio);
#endif /* __SOUND_CS5535AUDIO_H */

430
sound/pci/cs5535audio/cs5535audio_pcm.c Normal file
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@ -0,0 +1,430 @@
/*
* Driver for audio on multifunction CS5535 companion device
* Copyright (C) Jaya Kumar
*
* Based on Jaroslav Kysela and Takashi Iwai's examples.
* This work was sponsored by CIS(M) Sdn Bhd.
*
* 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
*
* todo: add be fmt support, spdif, pm
*/
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <sound/driver.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/initval.h>
#include <sound/asoundef.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/ac97_codec.h>
#include "cs5535audio.h"
static snd_pcm_hardware_t snd_cs5535audio_playback =
{
.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_SYNC_START
),
.formats = (
SNDRV_PCM_FMTBIT_S16_LE
),
.rates = (
SNDRV_PCM_RATE_CONTINUOUS |
SNDRV_PCM_RATE_8000_48000
),
.rate_min = 4000,
.rate_max = 48000,
.channels_min = 2,
.channels_max = 2,
.buffer_bytes_max = (128*1024),
.period_bytes_min = 64,
.period_bytes_max = (64*1024 - 16),
.periods_min = 1,
.periods_max = CS5535AUDIO_MAX_DESCRIPTORS,
.fifo_size = 0,
};
static snd_pcm_hardware_t snd_cs5535audio_capture =
{
.info = (
SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_SYNC_START
),
.formats = (
SNDRV_PCM_FMTBIT_S16_LE
),
.rates = (
SNDRV_PCM_RATE_CONTINUOUS |
SNDRV_PCM_RATE_8000_48000
),
.rate_min = 4000,
.rate_max = 48000,
.channels_min = 2,
.channels_max = 2,
.buffer_bytes_max = (128*1024),
.period_bytes_min = 64,
.period_bytes_max = (64*1024 - 16),
.periods_min = 1,
.periods_max = CS5535AUDIO_MAX_DESCRIPTORS,
.fifo_size = 0,
};
static int snd_cs5535audio_playback_open(snd_pcm_substream_t *substream)
{
int err;
cs5535audio_t *cs5535au = snd_pcm_substream_chip(substream);
snd_pcm_runtime_t *runtime = substream->runtime;
runtime->hw = snd_cs5535audio_playback;
cs5535au->playback_substream = substream;
runtime->private_data = &(cs5535au->dmas[CS5535AUDIO_DMA_PLAYBACK]);
snd_pcm_set_sync(substream);
if ((err = snd_pcm_hw_constraint_integer(runtime,
SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
return err;
return 0;
}
static int snd_cs5535audio_playback_close(snd_pcm_substream_t *substream)
{
return 0;
}
#define CS5535AUDIO_DESC_LIST_SIZE \
PAGE_ALIGN(CS5535AUDIO_MAX_DESCRIPTORS * sizeof(cs5535audio_dma_desc_t))
static int cs5535audio_build_dma_packets(cs5535audio_t *cs5535au,
cs5535audio_dma_t *dma,
snd_pcm_substream_t *substream,
unsigned int periods,
unsigned int period_bytes)
{
unsigned int i;
u32 addr, desc_addr, jmpprd_addr;
cs5535audio_dma_desc_t *lastdesc;
if (periods > CS5535AUDIO_MAX_DESCRIPTORS)
return -ENOMEM;
if (dma->desc_buf.area == NULL) {
if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
snd_dma_pci_data(cs5535au->pci),
CS5535AUDIO_DESC_LIST_SIZE+1,
&dma->desc_buf) < 0)
return -ENOMEM;
dma->period_bytes = dma->periods = 0;
}
if (dma->periods == periods && dma->period_bytes == period_bytes)
return 0;
/* the u32 cast is okay because in snd*create we succesfully told
pci alloc that we're only 32 bit capable so the uppper will be 0 */
addr = (u32) substream->runtime->dma_addr;
desc_addr = (u32) dma->desc_buf.addr;
for (i = 0; i < periods; i++) {
cs5535audio_dma_desc_t *desc =
&((cs5535audio_dma_desc_t *) dma->desc_buf.area)[i];
desc->addr = cpu_to_le32(addr);
desc->size = period_bytes;
desc->ctlreserved = PRD_EOP;
desc_addr += sizeof(cs5535audio_dma_desc_t);
addr += period_bytes;
}
/* we reserved one dummy descriptor at the end to do the PRD jump */
lastdesc = &((cs5535audio_dma_desc_t *) dma->desc_buf.area)[periods];
lastdesc->addr = cpu_to_le32((u32) dma->desc_buf.addr);
lastdesc->size = 0;
lastdesc->ctlreserved = PRD_JMP;
jmpprd_addr = cpu_to_le32(lastdesc->addr +
(sizeof(cs5535audio_dma_desc_t)*periods));
dma->period_bytes = period_bytes;
dma->periods = periods;
spin_lock_irq(&cs5535au->reg_lock);
dma->ops->disable_dma(cs5535au);
dma->ops->setup_prd(cs5535au, jmpprd_addr);
spin_unlock_irq(&cs5535au->reg_lock);
return 0;
}
static void cs5535audio_playback_enable_dma(cs5535audio_t *cs5535au)
{
cs_writeb(cs5535au, ACC_BM0_CMD, BM_CTL_EN);
}
static void cs5535audio_playback_disable_dma(cs5535audio_t *cs5535au)
{
cs_writeb(cs5535au, ACC_BM0_CMD, 0);
}
static void cs5535audio_playback_pause_dma(cs5535audio_t *cs5535au)
{
cs_writeb(cs5535au, ACC_BM0_CMD, BM_CTL_PAUSE);
}
static void cs5535audio_playback_setup_prd(cs5535audio_t *cs5535au,
u32 prd_addr)
{
cs_writel(cs5535au, ACC_BM0_PRD, prd_addr);
}
static u32 cs5535audio_playback_read_dma_pntr(cs5535audio_t *cs5535au)
{
return cs_readl(cs5535au, ACC_BM0_PNTR);
}
static void cs5535audio_capture_enable_dma(cs5535audio_t *cs5535au)
{
cs_writeb(cs5535au, ACC_BM1_CMD, BM_CTL_EN);
}
static void cs5535audio_capture_disable_dma(cs5535audio_t *cs5535au)
{
cs_writeb(cs5535au, ACC_BM1_CMD, 0);
}
static void cs5535audio_capture_pause_dma(cs5535audio_t *cs5535au)
{
cs_writeb(cs5535au, ACC_BM1_CMD, BM_CTL_PAUSE);
}
static void cs5535audio_capture_setup_prd(cs5535audio_t *cs5535au,
u32 prd_addr)
{
cs_writel(cs5535au, ACC_BM1_PRD, prd_addr);
}
static u32 cs5535audio_capture_read_dma_pntr(cs5535audio_t *cs5535au)
{
return cs_readl(cs5535au, ACC_BM1_PNTR);
}
static void cs5535audio_clear_dma_packets(cs5535audio_t *cs5535au,
cs5535audio_dma_t *dma,
snd_pcm_substream_t *substream)
{
snd_dma_free_pages(&dma->desc_buf);
dma->desc_buf.area = NULL;
}
static int snd_cs5535audio_hw_params(snd_pcm_substream_t *substream,
snd_pcm_hw_params_t *hw_params)
{
cs5535audio_t *cs5535au = snd_pcm_substream_chip(substream);
cs5535audio_dma_t *dma = substream->runtime->private_data;
int err;
err = snd_pcm_lib_malloc_pages(substream,
params_buffer_bytes(hw_params));
if (err < 0)
return err;
dma->buf_addr = substream->runtime->dma_addr;
dma->buf_bytes = params_buffer_bytes(hw_params);
err = cs5535audio_build_dma_packets(cs5535au, dma, substream,
params_periods(hw_params),
params_period_bytes(hw_params));
return err;
}
static int snd_cs5535audio_hw_free(snd_pcm_substream_t *substream)
{
cs5535audio_t *cs5535au = snd_pcm_substream_chip(substream);
cs5535audio_dma_t *dma = substream->runtime->private_data;
cs5535audio_clear_dma_packets(cs5535au, dma, substream);
return snd_pcm_lib_free_pages(substream);
}
static int snd_cs5535audio_playback_prepare(snd_pcm_substream_t *substream)
{
cs5535audio_t *cs5535au = snd_pcm_substream_chip(substream);
return snd_ac97_set_rate(cs5535au->ac97, AC97_PCM_FRONT_DAC_RATE,
substream->runtime->rate);
}
static int snd_cs5535audio_trigger(snd_pcm_substream_t *substream, int cmd)
{
cs5535audio_t *cs5535au = snd_pcm_substream_chip(substream);
cs5535audio_dma_t *dma = substream->runtime->private_data;
switch (cmd) {
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
spin_lock_irq(&cs5535au->reg_lock);
dma->ops->pause_dma(cs5535au);
spin_unlock_irq(&cs5535au->reg_lock);
break;
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
spin_lock_irq(&cs5535au->reg_lock);
dma->ops->enable_dma(cs5535au);
spin_unlock_irq(&cs5535au->reg_lock);
break;
case SNDRV_PCM_TRIGGER_START:
spin_lock_irq(&cs5535au->reg_lock);
dma->ops->enable_dma(cs5535au);
spin_unlock_irq(&cs5535au->reg_lock);
break;
case SNDRV_PCM_TRIGGER_STOP:
spin_lock_irq(&cs5535au->reg_lock);
dma->ops->disable_dma(cs5535au);
spin_unlock_irq(&cs5535au->reg_lock);
break;
default:
snd_printk(KERN_ERR "unhandled trigger\n");
return -EINVAL;
break;
}
return 0;
}
static snd_pcm_uframes_t snd_cs5535audio_pcm_pointer(snd_pcm_substream_t
*substream)
{
cs5535audio_t *cs5535au = snd_pcm_substream_chip(substream);
u32 curdma;
cs5535audio_dma_t *dma;
dma = substream->runtime->private_data;
curdma = dma->ops->read_dma_pntr(cs5535au);
if (curdma < dma->buf_addr) {
snd_printk(KERN_ERR "curdma=%x < %x bufaddr.\n",
curdma, dma->buf_addr);
return 0;
}
curdma -= dma->buf_addr;
if (curdma >= dma->buf_bytes) {
snd_printk(KERN_ERR "diff=%x >= %x buf_bytes.\n",
curdma, dma->buf_bytes);
return 0;
}
return bytes_to_frames(substream->runtime, curdma);
}
static int snd_cs5535audio_capture_open(snd_pcm_substream_t *substream)
{
int err;
cs5535audio_t *cs5535au = snd_pcm_substream_chip(substream);
snd_pcm_runtime_t *runtime = substream->runtime;
runtime->hw = snd_cs5535audio_capture;
cs5535au->capture_substream = substream;
runtime->private_data = &(cs5535au->dmas[CS5535AUDIO_DMA_CAPTURE]);
snd_pcm_set_sync(substream);
if ((err = snd_pcm_hw_constraint_integer(runtime,
SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
return err;
return 0;
}
static int snd_cs5535audio_capture_close(snd_pcm_substream_t *substream)
{
return 0;
}
static int snd_cs5535audio_capture_prepare(snd_pcm_substream_t *substream)
{
cs5535audio_t *cs5535au = snd_pcm_substream_chip(substream);
return snd_ac97_set_rate(cs5535au->ac97, AC97_PCM_LR_ADC_RATE,
substream->runtime->rate);
}
static snd_pcm_ops_t snd_cs5535audio_playback_ops = {
.open = snd_cs5535audio_playback_open,
.close = snd_cs5535audio_playback_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_cs5535audio_hw_params,
.hw_free = snd_cs5535audio_hw_free,
.prepare = snd_cs5535audio_playback_prepare,
.trigger = snd_cs5535audio_trigger,
.pointer = snd_cs5535audio_pcm_pointer,
};
static snd_pcm_ops_t snd_cs5535audio_capture_ops = {
.open = snd_cs5535audio_capture_open,
.close = snd_cs5535audio_capture_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_cs5535audio_hw_params,
.hw_free = snd_cs5535audio_hw_free,
.prepare = snd_cs5535audio_capture_prepare,
.trigger = snd_cs5535audio_trigger,
.pointer = snd_cs5535audio_pcm_pointer,
};
static void snd_cs5535audio_pcm_free(snd_pcm_t *pcm)
{
snd_pcm_lib_preallocate_free_for_all(pcm);
}
static cs5535audio_dma_ops_t snd_cs5535audio_playback_dma_ops = {
.type = CS5535AUDIO_DMA_PLAYBACK,
.enable_dma = cs5535audio_playback_enable_dma,
.disable_dma = cs5535audio_playback_disable_dma,
.setup_prd = cs5535audio_playback_setup_prd,
.pause_dma = cs5535audio_playback_pause_dma,
.read_dma_pntr = cs5535audio_playback_read_dma_pntr,
};
static cs5535audio_dma_ops_t snd_cs5535audio_capture_dma_ops = {
.type = CS5535AUDIO_DMA_CAPTURE,
.enable_dma = cs5535audio_capture_enable_dma,
.disable_dma = cs5535audio_capture_disable_dma,
.setup_prd = cs5535audio_capture_setup_prd,
.pause_dma = cs5535audio_capture_pause_dma,
.read_dma_pntr = cs5535audio_capture_read_dma_pntr,
};
int __devinit snd_cs5535audio_pcm(cs5535audio_t *cs5535au)
{
snd_pcm_t *pcm;
int err;
err = snd_pcm_new(cs5535au->card, "CS5535 Audio", 0, 1, 1, &pcm);
if (err < 0)
return err;
cs5535au->dmas[CS5535AUDIO_DMA_PLAYBACK].ops =
&snd_cs5535audio_playback_dma_ops;
cs5535au->dmas[CS5535AUDIO_DMA_CAPTURE].ops =
&snd_cs5535audio_capture_dma_ops;
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
&snd_cs5535audio_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
&snd_cs5535audio_capture_ops);
pcm->private_data = cs5535au;
pcm->private_free = snd_cs5535audio_pcm_free;
pcm->info_flags = 0;
strcpy(pcm->name, "CS5535 Audio");
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
snd_dma_pci_data(cs5535au->pci),
64*1024, 128*1024);
return 0;
}