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alistair23-linux/sound/pci/cs5530.c
Thomas Gleixner 3e0a4e8580 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 118 
Based on 1 normalized pattern(s):

  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 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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 44 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190523091651.032047323@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-24 17:39:02 +02:00

290 lines
6.6 KiB
C
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// 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 int snd_cs5530_free(struct snd_cs5530 *chip)
{
pci_release_regions(chip->pci);
pci_disable_device(chip->pci);
kfree(chip);
return 0;
}
static int snd_cs5530_dev_free(struct snd_device *device)
{
struct snd_cs5530 *chip = device->device_data;
return snd_cs5530_free(chip);
}
static void snd_cs5530_remove(struct pci_dev *pci)
{
snd_card_free(pci_get_drvdata(pci));
}
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 **rchip)
{
struct snd_cs5530 *chip;
unsigned long sb_base;
u8 irq, dma8, dma16 = 0;
u16 map;
void __iomem *mem;
int err;
static struct snd_device_ops ops = {
.dev_free = snd_cs5530_dev_free,
};
*rchip = NULL;
err = pci_enable_device(pci);
if (err < 0)
return err;
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
if (chip == NULL) {
pci_disable_device(pci);
return -ENOMEM;
}
chip->card = card;
chip->pci = pci;
err = pci_request_regions(pci, "CS5530");
if (err < 0) {
kfree(chip);
pci_disable_device(pci);
return err;
}
chip->pci_base = pci_resource_start(pci, 0);
mem = pci_ioremap_bar(pci, 0);
if (mem == NULL) {
snd_cs5530_free(chip);
return -EBUSY;
}
map = readw(mem + 0x18);
iounmap(mem);
/* 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");
snd_cs5530_free(chip);
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");
snd_cs5530_free(chip);
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");
snd_cs5530_free(chip);
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");
snd_cs5530_free(chip);
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");
snd_cs5530_free(chip);
return err;
}
err = snd_sb16dsp_pcm(chip->sb, 0);
if (err < 0) {
dev_err(card->dev, "Could not create PCM\n");
snd_cs5530_free(chip);
return err;
}
err = snd_sbmixer_new(chip->sb);
if (err < 0) {
dev_err(card->dev, "Could not create Mixer\n");
snd_cs5530_free(chip);
return err;
}
err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
if (err < 0) {
snd_cs5530_free(chip);
return err;
}
*rchip = chip;
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 = NULL;
int err;
if (dev >= SNDRV_CARDS)
return -ENODEV;
if (!enable[dev]) {
dev++;
return -ENOENT;
}
err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
0, &card);
if (err < 0)
return err;
err = snd_cs5530_create(card, pci, &chip);
if (err < 0) {
snd_card_free(card);
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) {
snd_card_free(card);
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,
.remove = snd_cs5530_remove,
};
module_pci_driver(cs5530_driver);
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