kernel-ark/sound/pci/cs5530.c

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/*
* 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.
*
* 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.
*
* TO DO:
* Investigate whether we can portably support Cognac (5520) in the
* same manner.
*/
#include <linux/delay.h>
#include <linux/moduleparam.h>
#include <linux/pci.h>
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 08:04:11 +00:00
#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 int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
struct snd_cs5530 {
struct snd_card *card;
struct pci_dev *pci;
struct snd_sb *sb;
unsigned long pci_base;
};
static DEFINE_PCI_DEVICE_TABLE(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 __devexit snd_cs5530_remove(struct pci_dev *pci)
{
snd_card_free(pci_get_drvdata(pci));
pci_set_drvdata(pci, NULL);
}
static u8 __devinit 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 __devinit 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) {
kfree(chip);
pci_disable_device(pci);
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))
printk(KERN_INFO "CS5530: XpressAudio at 0x%lx\n", sb_base);
else {
printk(KERN_ERR "Could not find XpressAudio!\n");
snd_cs5530_free(chip);
return -ENODEV;
}
if (map & (1<<5))
printk(KERN_INFO "CS5530: MPU at 0x300\n");
else if (map & (1<<6))
printk(KERN_INFO "CS5530: 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 {
printk(KERN_ERR "CS5530: 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 {
printk(KERN_ERR "CS5530: 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 {
printk(KERN_ERR "CS5530: SoundBlaster IRQ not set\n");
snd_cs5530_free(chip);
return -ENODEV;
}
printk(KERN_INFO "CS5530: 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) {
printk(KERN_ERR "CS5530: Could not create SoundBlaster\n");
snd_cs5530_free(chip);
return err;
}
err = snd_sb16dsp_pcm(chip->sb, 0, &chip->sb->pcm);
if (err < 0) {
printk(KERN_ERR "CS5530: Could not create PCM\n");
snd_cs5530_free(chip);
return err;
}
err = snd_sbmixer_new(chip->sb);
if (err < 0) {
printk(KERN_ERR "CS5530: 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;
}
snd_card_set_dev(card, &pci->dev);
*rchip = chip;
return 0;
}
static int __devinit 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_create(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 driver = {
.name = KBUILD_MODNAME,
.id_table = snd_cs5530_ids,
.probe = snd_cs5530_probe,
.remove = __devexit_p(snd_cs5530_remove),
};
static int __init alsa_card_cs5530_init(void)
{
return pci_register_driver(&driver);
}
static void __exit alsa_card_cs5530_exit(void)
{
pci_unregister_driver(&driver);
}
module_init(alsa_card_cs5530_init)
module_exit(alsa_card_cs5530_exit)