[PATCH 07/51] ALSA: ad1889: Allocate resources with device-managed APIs
Takashi Iwai
tiwai at suse.de
Tue Jul 13 16:28:13 CEST 2021
This patch converts the resource management in PCI ad1889 driver with
devres as a clean up. Each manual resource management is converted
with the corresponding devres helper, and the card object release is
managed now via card->private_free instead of a lowlevel snd_device.
Also, the unnecessary ac97 free callbacks are removed, too.
This should give no user-visible functional changes.
Signed-off-by: Takashi Iwai <tiwai at suse.de>
---
sound/pci/ad1889.c | 144 ++++++++-------------------------------------
1 file changed, 25 insertions(+), 119 deletions(-)
diff --git a/sound/pci/ad1889.c b/sound/pci/ad1889.c
index 5c78951dd596..bba4dae8dcc7 100644
--- a/sound/pci/ad1889.c
+++ b/sound/pci/ad1889.c
@@ -740,20 +740,6 @@ snd_ad1889_ac97_xinit(struct snd_ad1889 *chip)
}
-static void
-snd_ad1889_ac97_bus_free(struct snd_ac97_bus *bus)
-{
- struct snd_ad1889 *chip = bus->private_data;
- chip->ac97_bus = NULL;
-}
-
-static void
-snd_ad1889_ac97_free(struct snd_ac97 *ac97)
-{
- struct snd_ad1889 *chip = ac97->private_data;
- chip->ac97 = NULL;
-}
-
static int
snd_ad1889_ac97_init(struct snd_ad1889 *chip, const char *quirk_override)
{
@@ -771,11 +757,8 @@ snd_ad1889_ac97_init(struct snd_ad1889 *chip, const char *quirk_override)
if (err < 0)
return err;
- chip->ac97_bus->private_free = snd_ad1889_ac97_bus_free;
-
memset(&ac97, 0, sizeof(ac97));
ac97.private_data = chip;
- ac97.private_free = snd_ad1889_ac97_free;
ac97.pci = chip->pci;
err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97);
@@ -787,11 +770,10 @@ snd_ad1889_ac97_init(struct snd_ad1889 *chip, const char *quirk_override)
return 0;
}
-static int
-snd_ad1889_free(struct snd_ad1889 *chip)
+static void
+snd_ad1889_free(struct snd_card *card)
{
- if (chip->irq < 0)
- goto skip_hw;
+ struct snd_ad1889 *chip = card->private_data;
spin_lock_irq(&chip->lock);
@@ -805,125 +787,60 @@ snd_ad1889_free(struct snd_ad1889 *chip)
ad1889_readl(chip, AD_DMA_DISR); /* flush, dammit! */
spin_unlock_irq(&chip->lock);
-
- if (chip->irq >= 0)
- free_irq(chip->irq, chip);
-
-skip_hw:
- iounmap(chip->iobase);
- pci_release_regions(chip->pci);
- pci_disable_device(chip->pci);
- kfree(chip);
- return 0;
-}
-
-static int
-snd_ad1889_dev_free(struct snd_device *device)
-{
- struct snd_ad1889 *chip = device->device_data;
- return snd_ad1889_free(chip);
-}
-
-static int
-snd_ad1889_init(struct snd_ad1889 *chip)
-{
- ad1889_writew(chip, AD_DS_CCS, AD_DS_CCS_CLKEN); /* turn on clock */
- ad1889_readw(chip, AD_DS_CCS); /* flush posted write */
-
- usleep_range(10000, 11000);
-
- /* enable Master and Target abort interrupts */
- ad1889_writel(chip, AD_DMA_DISR, AD_DMA_DISR_PMAE | AD_DMA_DISR_PTAE);
-
- return 0;
}
static int
-snd_ad1889_create(struct snd_card *card,
- struct pci_dev *pci,
- struct snd_ad1889 **rchip)
+snd_ad1889_create(struct snd_card *card, struct pci_dev *pci)
{
+ struct snd_ad1889 *chip = card->private_data;
int err;
- struct snd_ad1889 *chip;
- static const struct snd_device_ops ops = {
- .dev_free = snd_ad1889_dev_free,
- };
-
- *rchip = NULL;
-
- err = pci_enable_device(pci);
+ err = pcim_enable_device(pci);
if (err < 0)
return err;
/* check PCI availability (32bit DMA) */
if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(32))) {
dev_err(card->dev, "error setting 32-bit DMA mask.\n");
- pci_disable_device(pci);
return -ENXIO;
}
- /* allocate chip specific data with zero-filled memory */
- chip = kzalloc(sizeof(*chip), GFP_KERNEL);
- if (!chip) {
- pci_disable_device(pci);
- return -ENOMEM;
- }
-
chip->card = card;
- card->private_data = chip;
chip->pci = pci;
chip->irq = -1;
/* (1) PCI resource allocation */
- err = pci_request_regions(pci, card->driver);
+ err = pcim_iomap_regions(pci, 1 << 0, card->driver);
if (err < 0)
- goto free_and_ret;
+ return err;
chip->bar = pci_resource_start(pci, 0);
- chip->iobase = pci_ioremap_bar(pci, 0);
- if (chip->iobase == NULL) {
- dev_err(card->dev, "unable to reserve region.\n");
- err = -EBUSY;
- goto free_and_ret;
- }
+ chip->iobase = pcim_iomap_table(pci)[0];
pci_set_master(pci);
spin_lock_init(&chip->lock); /* only now can we call ad1889_free */
- if (request_irq(pci->irq, snd_ad1889_interrupt,
- IRQF_SHARED, KBUILD_MODNAME, chip)) {
+ if (devm_request_irq(&pci->dev, pci->irq, snd_ad1889_interrupt,
+ IRQF_SHARED, KBUILD_MODNAME, chip)) {
dev_err(card->dev, "cannot obtain IRQ %d\n", pci->irq);
- snd_ad1889_free(chip);
return -EBUSY;
}
chip->irq = pci->irq;
card->sync_irq = chip->irq;
+ card->private_free = snd_ad1889_free;
/* (2) initialization of the chip hardware */
- err = snd_ad1889_init(chip);
- if (err < 0) {
- snd_ad1889_free(chip);
- return err;
- }
+ ad1889_writew(chip, AD_DS_CCS, AD_DS_CCS_CLKEN); /* turn on clock */
+ ad1889_readw(chip, AD_DS_CCS); /* flush posted write */
- err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
- if (err < 0) {
- snd_ad1889_free(chip);
- return err;
- }
+ usleep_range(10000, 11000);
- *rchip = chip;
+ /* enable Master and Target abort interrupts */
+ ad1889_writel(chip, AD_DMA_DISR, AD_DMA_DISR_PMAE | AD_DMA_DISR_PTAE);
return 0;
-
-free_and_ret:
- kfree(chip);
- pci_disable_device(pci);
-
- return err;
}
static int
@@ -944,19 +861,19 @@ snd_ad1889_probe(struct pci_dev *pci,
}
/* (2) */
- err = snd_card_new(&pci->dev, index[devno], id[devno], THIS_MODULE,
- 0, &card);
- /* XXX REVISIT: we can probably allocate chip in this call */
+ err = snd_devm_card_new(&pci->dev, index[devno], id[devno], THIS_MODULE,
+ sizeof(*chip), &card);
if (err < 0)
return err;
+ chip = card->private_data;
strcpy(card->driver, "AD1889");
strcpy(card->shortname, "Analog Devices AD1889");
/* (3) */
- err = snd_ad1889_create(card, pci, &chip);
+ err = snd_ad1889_create(card, pci);
if (err < 0)
- goto free_and_ret;
+ return err;
/* (4) */
sprintf(card->longname, "%s at 0x%lx irq %i",
@@ -966,11 +883,11 @@ snd_ad1889_probe(struct pci_dev *pci,
/* register AC97 mixer */
err = snd_ad1889_ac97_init(chip, ac97_quirk[devno]);
if (err < 0)
- goto free_and_ret;
+ return err;
err = snd_ad1889_pcm_init(chip, 0);
if (err < 0)
- goto free_and_ret;
+ return err;
/* register proc interface */
snd_ad1889_proc_init(chip);
@@ -978,23 +895,13 @@ snd_ad1889_probe(struct pci_dev *pci,
/* (6) */
err = snd_card_register(card);
if (err < 0)
- goto free_and_ret;
+ return err;
/* (7) */
pci_set_drvdata(pci, card);
devno++;
return 0;
-
-free_and_ret:
- snd_card_free(card);
- return err;
-}
-
-static void
-snd_ad1889_remove(struct pci_dev *pci)
-{
- snd_card_free(pci_get_drvdata(pci));
}
static const struct pci_device_id snd_ad1889_ids[] = {
@@ -1007,7 +914,6 @@ static struct pci_driver ad1889_pci_driver = {
.name = KBUILD_MODNAME,
.id_table = snd_ad1889_ids,
.probe = snd_ad1889_probe,
- .remove = snd_ad1889_remove,
};
module_pci_driver(ad1889_pci_driver);
--
2.26.2
More information about the Alsa-devel
mailing list