230 строки
5.5 KiB
C
230 строки
5.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* cs5530.c - Initialisation code for Cyrix/NatSemi VSA1 softaudio
|
|
*
|
|
* (C) Copyright 2007 Ash Willis <ashwillis@programmer.net>
|
|
* (C) Copyright 2003 Red Hat Inc <alan@lxorguk.ukuu.org.uk>
|
|
*
|
|
* This driver was ported (shamelessly ripped ;) from oss/kahlua.c but I did
|
|
* mess with it a bit. The chip seems to have to have trouble with full duplex
|
|
* mode. If we're recording in 8bit 8000kHz, say, and we then attempt to
|
|
* simultaneously play back audio at 16bit 44100kHz, the device actually plays
|
|
* back in the same format in which it is capturing. By forcing the chip to
|
|
* always play/capture in 16/44100, we can let alsa-lib convert the samples and
|
|
* that way we can hack up some full duplex audio.
|
|
*
|
|
* XpressAudio(tm) is used on the Cyrix MediaGX (now NatSemi Geode) systems.
|
|
* The older version (VSA1) provides fairly good soundblaster emulation
|
|
* although there are a couple of bugs: large DMA buffers break record,
|
|
* and the MPU event handling seems suspect. VSA2 allows the native driver
|
|
* to control the AC97 audio engine directly and requires a different driver.
|
|
*
|
|
* Thanks to National Semiconductor for providing the needed information
|
|
* on the XpressAudio(tm) internals.
|
|
*
|
|
* TO DO:
|
|
* Investigate whether we can portably support Cognac (5520) in the
|
|
* same manner.
|
|
*/
|
|
|
|
#include <linux/delay.h>
|
|
#include <linux/module.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/slab.h>
|
|
#include <sound/core.h>
|
|
#include <sound/sb.h>
|
|
#include <sound/initval.h>
|
|
|
|
MODULE_AUTHOR("Ash Willis");
|
|
MODULE_DESCRIPTION("CS5530 Audio");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
|
|
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
|
|
static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
|
|
|
|
module_param_array(index, int, NULL, 0444);
|
|
MODULE_PARM_DESC(index, "Index value for CS5530 Audio driver.");
|
|
module_param_array(id, charp, NULL, 0444);
|
|
MODULE_PARM_DESC(id, "ID string for CS5530 Audio driver.");
|
|
module_param_array(enable, bool, NULL, 0444);
|
|
MODULE_PARM_DESC(enable, "Enable CS5530 Audio driver.");
|
|
|
|
struct snd_cs5530 {
|
|
struct snd_card *card;
|
|
struct pci_dev *pci;
|
|
struct snd_sb *sb;
|
|
unsigned long pci_base;
|
|
};
|
|
|
|
static const struct pci_device_id snd_cs5530_ids[] = {
|
|
{PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5530_AUDIO, PCI_ANY_ID,
|
|
PCI_ANY_ID, 0, 0},
|
|
{0,}
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(pci, snd_cs5530_ids);
|
|
|
|
static u8 snd_cs5530_mixer_read(unsigned long io, u8 reg)
|
|
{
|
|
outb(reg, io + 4);
|
|
udelay(20);
|
|
reg = inb(io + 5);
|
|
udelay(20);
|
|
return reg;
|
|
}
|
|
|
|
static int snd_cs5530_create(struct snd_card *card,
|
|
struct pci_dev *pci)
|
|
{
|
|
struct snd_cs5530 *chip = card->private_data;
|
|
unsigned long sb_base;
|
|
u8 irq, dma8, dma16 = 0;
|
|
u16 map;
|
|
void __iomem *mem;
|
|
int err;
|
|
|
|
err = pcim_enable_device(pci);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
chip->card = card;
|
|
chip->pci = pci;
|
|
|
|
err = pcim_iomap_regions(pci, 1 << 0, "CS5530");
|
|
if (err < 0)
|
|
return err;
|
|
chip->pci_base = pci_resource_start(pci, 0);
|
|
mem = pcim_iomap_table(pci)[0];
|
|
map = readw(mem + 0x18);
|
|
|
|
/* Map bits
|
|
0:1 * 0x20 + 0x200 = sb base
|
|
2 sb enable
|
|
3 adlib enable
|
|
5 MPU enable 0x330
|
|
6 MPU enable 0x300
|
|
|
|
The other bits may be used internally so must be masked */
|
|
|
|
sb_base = 0x220 + 0x20 * (map & 3);
|
|
|
|
if (map & (1<<2))
|
|
dev_info(card->dev, "XpressAudio at 0x%lx\n", sb_base);
|
|
else {
|
|
dev_err(card->dev, "Could not find XpressAudio!\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (map & (1<<5))
|
|
dev_info(card->dev, "MPU at 0x300\n");
|
|
else if (map & (1<<6))
|
|
dev_info(card->dev, "MPU at 0x330\n");
|
|
|
|
irq = snd_cs5530_mixer_read(sb_base, 0x80) & 0x0F;
|
|
dma8 = snd_cs5530_mixer_read(sb_base, 0x81);
|
|
|
|
if (dma8 & 0x20)
|
|
dma16 = 5;
|
|
else if (dma8 & 0x40)
|
|
dma16 = 6;
|
|
else if (dma8 & 0x80)
|
|
dma16 = 7;
|
|
else {
|
|
dev_err(card->dev, "No 16bit DMA enabled\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (dma8 & 0x01)
|
|
dma8 = 0;
|
|
else if (dma8 & 02)
|
|
dma8 = 1;
|
|
else if (dma8 & 0x08)
|
|
dma8 = 3;
|
|
else {
|
|
dev_err(card->dev, "No 8bit DMA enabled\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (irq & 1)
|
|
irq = 9;
|
|
else if (irq & 2)
|
|
irq = 5;
|
|
else if (irq & 4)
|
|
irq = 7;
|
|
else if (irq & 8)
|
|
irq = 10;
|
|
else {
|
|
dev_err(card->dev, "SoundBlaster IRQ not set\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
dev_info(card->dev, "IRQ: %d DMA8: %d DMA16: %d\n", irq, dma8, dma16);
|
|
|
|
err = snd_sbdsp_create(card, sb_base, irq, snd_sb16dsp_interrupt, dma8,
|
|
dma16, SB_HW_CS5530, &chip->sb);
|
|
if (err < 0) {
|
|
dev_err(card->dev, "Could not create SoundBlaster\n");
|
|
return err;
|
|
}
|
|
|
|
err = snd_sb16dsp_pcm(chip->sb, 0);
|
|
if (err < 0) {
|
|
dev_err(card->dev, "Could not create PCM\n");
|
|
return err;
|
|
}
|
|
|
|
err = snd_sbmixer_new(chip->sb);
|
|
if (err < 0) {
|
|
dev_err(card->dev, "Could not create Mixer\n");
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int snd_cs5530_probe(struct pci_dev *pci,
|
|
const struct pci_device_id *pci_id)
|
|
{
|
|
static int dev;
|
|
struct snd_card *card;
|
|
struct snd_cs5530 *chip;
|
|
int err;
|
|
|
|
if (dev >= SNDRV_CARDS)
|
|
return -ENODEV;
|
|
if (!enable[dev]) {
|
|
dev++;
|
|
return -ENOENT;
|
|
}
|
|
|
|
err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
|
|
sizeof(*chip), &card);
|
|
if (err < 0)
|
|
return err;
|
|
chip = card->private_data;
|
|
|
|
err = snd_cs5530_create(card, pci);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
strcpy(card->driver, "CS5530");
|
|
strcpy(card->shortname, "CS5530 Audio");
|
|
sprintf(card->longname, "%s at 0x%lx", card->shortname, chip->pci_base);
|
|
|
|
err = snd_card_register(card);
|
|
if (err < 0)
|
|
return err;
|
|
pci_set_drvdata(pci, card);
|
|
dev++;
|
|
return 0;
|
|
}
|
|
|
|
static struct pci_driver cs5530_driver = {
|
|
.name = KBUILD_MODNAME,
|
|
.id_table = snd_cs5530_ids,
|
|
.probe = snd_cs5530_probe,
|
|
};
|
|
|
|
module_pci_driver(cs5530_driver);
|