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[PATCH] V4L: 925: saa7134 alsa is now a standalone module

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Saa7134-alsa is now a standalone module

Signed-off-by: Ricardo Cerqueira <v4l@cerqueira.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Ricardo Cerqueira 2005-11-08 21:38:53 -08:00 committed by Linus Torvalds
parent 875c296b8e
commit 79dd0c69f0
4 changed files with 121 additions and 29 deletions
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110
drivers/media/video/saa7134/saa7134-alsa.c
View File

@ -1,6 +1,5 @@
/*
* SAA713x ALSA support for V4L
* Ricardo Cerqueira <v4l@cerqueira.org>
*
*
* Caveats:
@ -37,9 +36,13 @@
#include "saa7134.h"
#include "saa7134-reg.h"
static unsigned int alsa_debug = 0;
module_param(alsa_debug, int, 0644);
MODULE_PARM_DESC(alsa_debug,"enable debug messages [alsa]");
static unsigned int debug = 0;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug,"enable debug messages [alsa]");
unsigned int dsp_nr = 0;
module_param(dsp_nr, int, 0444);
MODULE_PARM_DESC(dsp_nr, "alsa device number");
/*
* Configuration macros
@ -69,7 +72,7 @@ static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 0};
#define dprintk(fmt, arg...) if (alsa_debug) \
#define dprintk(fmt, arg...) if (debug) \
printk(KERN_DEBUG "%s/alsa: " fmt, dev->name , ## arg)
/*
@ -107,6 +110,7 @@ typedef struct snd_card_saa7134_pcm {
static snd_card_t *snd_saa7134_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
/*
* saa7134 DMA audio stop
*
@ -189,12 +193,11 @@ void saa7134_irq_alsa_done(struct saa7134_dev *dev, unsigned long status)
/* next block addr */
next_blk = (dev->oss.dma_blk + 2) % dev->oss.blocks;
saa_writel(reg,next_blk * dev->oss.blksize);
if (alsa_debug > 2)
if (debug > 2)
dprintk("irq: ok, %s, next_blk=%d, addr=%x, blocks=%u, size=%u, read=%u\n",
(status & 0x10000000) ? "even" : "odd ", next_blk,
next_blk * dev->oss.blksize, dev->oss.blocks, dev->oss.blksize, dev->oss.read_count);
/* update status & wake waiting readers */
dev->oss.dma_blk = (dev->oss.dma_blk + 1) % dev->oss.blocks;
dev->oss.read_count += dev->oss.blksize;
@ -211,6 +214,41 @@ void saa7134_irq_alsa_done(struct saa7134_dev *dev, unsigned long status)
}
/*
* IRQ request handler
*
* Runs along with saa7134's IRQ handler, discards anything that isn't
* DMA sound
*
*/
static irqreturn_t saa7134_alsa_irq(int irq, void *dev_id, struct pt_regs *regs)
{
struct saa7134_dev *dev = (struct saa7134_dev*) dev_id;
unsigned long report, status;
int loop, handled = 0;
for (loop = 0; loop < 10; loop++) {
report = saa_readl(SAA7134_IRQ_REPORT);
status = saa_readl(SAA7134_IRQ_STATUS);
if (report & SAA7134_IRQ_REPORT_DONE_RA3) {
handled = 1;
saa_writel(SAA7134_IRQ_REPORT,report);
saa7134_irq_alsa_done(dev, status);
} else {
goto out;
}
}
if (loop == 10) {
dprintk("error! looping IRQ!");
}
out:
return IRQ_RETVAL(handled);
}
/*
* ALSA capture trigger
*
@ -822,11 +860,9 @@ static int snd_saa7134_capsrc_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_
saa_dsp_writel(dev, SAA7133_DIGITAL_OUTPUT_SEL1, 0xbbbb10);
if (left || right) { // We've got data, turn the input on
//saa_dsp_writel(dev, SAA7133_DIGITAL_OUTPUT_SEL2, 0x101010);
saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, xbarin);
saa_writel(SAA7133_ANALOG_IO_SELECT, anabar);
} else {
//saa_dsp_writel(dev, SAA7133_DIGITAL_OUTPUT_SEL2, 0x101010);
saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, 0);
saa_writel(SAA7133_ANALOG_IO_SELECT, 0);
}
@ -889,9 +925,10 @@ static int snd_saa7134_dev_free(snd_device_t *device)
*
*/
int alsa_card_saa7134_create(struct saa7134_dev *saadev, unsigned int devicenum)
int alsa_card_saa7134_create (struct saa7134_dev *saadev, unsigned int devicenum)
{
static int dev;
snd_card_t *card;
snd_card_saa7134_t *chip;
int err;
@ -899,6 +936,7 @@ int alsa_card_saa7134_create(struct saa7134_dev *saadev, unsigned int devicenum)
.dev_free = snd_saa7134_dev_free,
};
if (dev >= SNDRV_CARDS)
return -ENODEV;
if (!enable[dev])
@ -906,6 +944,7 @@ int alsa_card_saa7134_create(struct saa7134_dev *saadev, unsigned int devicenum)
if (devicenum) {
card = snd_card_new(devicenum, id[dev], THIS_MODULE, 0);
dsp_nr++;
} else {
card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
}
@ -931,6 +970,15 @@ int alsa_card_saa7134_create(struct saa7134_dev *saadev, unsigned int devicenum)
chip->irq = saadev->pci->irq;
chip->iobase = pci_resource_start(saadev->pci, 0);
err = request_irq(chip->pci->irq, saa7134_alsa_irq,
SA_SHIRQ | SA_INTERRUPT, saadev->name, saadev);
if (err < 0) {
printk(KERN_ERR "%s: can't get IRQ %d for ALSA\n",
saadev->name, saadev->pci->irq);
return err;
}
if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
snd_saa7134_free(chip);
return err;
@ -963,10 +1011,48 @@ __nodev:
return err;
}
void alsa_card_saa7134_exit(void)
/*
* Module initializer
*
* Loops through present saa7134 cards, and assigns an ALSA device
* to each one
*
*/
static int saa7134_alsa_init(void)
{
struct saa7134_dev *saadev = NULL;
struct list_head *list;
printk(KERN_INFO "saa7134 ALSA driver for DMA sound loaded\n");
list_for_each(list,&saa7134_devlist) {
saadev = list_entry(list, struct saa7134_dev, devlist);
alsa_card_saa7134_create(saadev,dsp_nr);
}
if (saadev == NULL)
printk(KERN_INFO "saa7134 ALSA: no saa7134 cards found\n");
return 0;
}
/*
* Module destructor
*/
void saa7134_alsa_exit(void)
{
int idx;
for (idx = 0; idx < SNDRV_CARDS; idx++) {
for (idx = 0; idx < SNDRV_CARDS; idx++) {
snd_card_free(snd_saa7134_cards[idx]);
}
printk(KERN_INFO "saa7134 ALSA driver for DMA sound unloaded\n");
return;
}
module_init(saa7134_alsa_init);
module_exit(saa7134_alsa_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Ricardo Cerqueira");

29
drivers/media/video/saa7134/saa7134-core.c
View File

@ -574,6 +574,17 @@ static irqreturn_t saa7134_irq(int irq, void *dev_id, struct pt_regs *regs)
dev->name);
goto out;
}
/* If alsa support is active and we get a sound report, exit
and let the saa7134-alsa module deal with it */
if ((report & SAA7134_IRQ_REPORT_DONE_RA3) && alsa) {
if (irq_debug > 1)
printk(KERN_DEBUG "%s/irq: ignoring interrupt for ALSA\n",
dev->name);
goto out;
}
handled = 1;
saa_writel(SAA7134_IRQ_REPORT,report);
if (irq_debug)
@ -598,8 +609,6 @@ static irqreturn_t saa7134_irq(int irq, void *dev_id, struct pt_regs *regs)
if ((report & SAA7134_IRQ_REPORT_DONE_RA3)) {
if (oss) {
saa7134_irq_oss_done(dev,status);
} else if (alsa) {
saa7134_irq_alsa_done(dev,status);
}
}
@ -1029,9 +1038,7 @@ static int __devinit saa7134_initdev(struct pci_dev *pci_dev,
printk(KERN_INFO "%s: registered device mixer%d\n",
dev->name,dev->oss.minor_mixer >> 4);
} else if (alsa) {
alsa_card_saa7134_create(dev,dsp_nr[dev->nr]);
printk(KERN_INFO "%s: registered ALSA devices\n",
dev->name);
request_module("saa7134-alsa");
}
break;
}
@ -1059,8 +1066,6 @@ static int __devinit saa7134_initdev(struct pci_dev *pci_dev,
case PCI_DEVICE_ID_PHILIPS_SAA7135:
if (oss)
unregister_sound_dsp(dev->oss.minor_dsp);
else if (alsa)
alsa_card_saa7134_exit();
break;
}
fail4:
@ -1120,8 +1125,7 @@ static void __devexit saa7134_finidev(struct pci_dev *pci_dev)
if (oss) {
unregister_sound_mixer(dev->oss.minor_mixer);
unregister_sound_dsp(dev->oss.minor_dsp);
} else if (alsa)
alsa_card_saa7134_exit();
}
break;
}
saa7134_unregister_video(dev);
@ -1214,6 +1218,13 @@ EXPORT_SYMBOL(saa7134_i2c_call_clients);
EXPORT_SYMBOL(saa7134_devlist);
EXPORT_SYMBOL(saa7134_boards);
/* ----------------- For ALSA -------------------------------- */
EXPORT_SYMBOL(saa7134_pgtable_free);
EXPORT_SYMBOL(saa7134_pgtable_build);
EXPORT_SYMBOL(saa7134_pgtable_alloc);
EXPORT_SYMBOL(saa7134_set_dmabits);
/* ----------------------------------------------------------- */
/*
* Local variables:

3
drivers/media/video/saa7134/saa7134-tvaudio.c
View File

@ -1024,9 +1024,12 @@ int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
return 0;
}
EXPORT_SYMBOL(saa_dsp_writel);
/* ----------------------------------------------------------- */
/*
* Local variables:
* c-basic-offset: 8
* End:
*/

8
drivers/media/video/saa7134/saa7134.h
View File

@ -665,14 +665,6 @@ void saa7134_input_fini(struct saa7134_dev *dev);
void saa7134_input_irq(struct saa7134_dev *dev);
void saa7134_set_i2c_ir(struct saa7134_dev *dev, struct IR_i2c *ir);
/* ----------------------------------------------------------- */
/* saa7134-alsa.c */
int alsa_card_saa7134_create(struct saa7134_dev *saadev, unsigned int devnum);
void alsa_card_saa7134_exit(void);
void saa7134_irq_alsa_done(struct saa7134_dev *dev, unsigned long status);
/*
* Local variables:
* c-basic-offset: 8