Commit 9b4ffa48 authored by Jaya Kumar's avatar Jaya Kumar Committed by Jaroslav Kysela
Browse files

[ALSA] Add support for the CS5535 Audio device

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: default avatarJaya Kumar <jayakumar.alsa@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent c3e6f7d8
......@@ -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
......
......@@ -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
......
......@@ -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
......
......@@ -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
......
......@@ -54,6 +54,7 @@ obj-$(CONFIG_SND) += \
au88x0/ \
ca0106/ \
cs46xx/ \
cs5535audio/ \
emu10k1/ \
hda/ \
ice1712/ \
......
#
# Makefile for cs5535audio
#
snd-cs5535audio-objs := cs5535audio.o cs5535audio_pcm.o
# Toplevel Module Dependency
obj-$(CONFIG_SND_CS5535AUDIO) += snd-cs5535audio.o
/*
* 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");
#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 */
/*
* 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