mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-11 12:28:41 +08:00
ALSA: ca0106: Allocate resources with device-managed APIs
This patch converts the resource management in PCI ca0106 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. This should give no user-visible functional changes. Link: https://lore.kernel.org/r/20210715075941.23332-30-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
parent
33631012cd
commit
1656fa6ea2
@ -667,7 +667,6 @@ struct snd_ca0106 {
|
||||
struct pci_dev *pci;
|
||||
|
||||
unsigned long port;
|
||||
struct resource *res_port;
|
||||
int irq;
|
||||
|
||||
unsigned int serial; /* serial number */
|
||||
@ -688,7 +687,7 @@ struct snd_ca0106 {
|
||||
u8 i2c_capture_volume[4][2];
|
||||
int capture_mic_line_in;
|
||||
|
||||
struct snd_dma_buffer buffer;
|
||||
struct snd_dma_buffer *buffer;
|
||||
|
||||
struct snd_ca_midi midi;
|
||||
struct snd_ca_midi midi2;
|
||||
|
||||
@ -718,7 +718,7 @@ static int snd_ca0106_pcm_prepare_playback(struct snd_pcm_substream *substream)
|
||||
struct snd_pcm_runtime *runtime = substream->runtime;
|
||||
struct snd_ca0106_pcm *epcm = runtime->private_data;
|
||||
int channel = epcm->channel_id;
|
||||
u32 *table_base = (u32 *)(emu->buffer.area+(8*16*channel));
|
||||
u32 *table_base = (u32 *)(emu->buffer->area+(8*16*channel));
|
||||
u32 period_size_bytes = frames_to_bytes(runtime, runtime->period_size);
|
||||
u32 hcfg_mask = HCFG_PLAYBACK_S32_LE;
|
||||
u32 hcfg_set = 0x00000000;
|
||||
@ -746,7 +746,7 @@ static int snd_ca0106_pcm_prepare_playback(struct snd_pcm_substream *substream)
|
||||
runtime->dma_addr, runtime->dma_area, table_base);
|
||||
dev_dbg(emu->card->dev,
|
||||
"dma_addr=%x, dma_area=%p, dma_bytes(size)=%x\n",
|
||||
emu->buffer.addr, emu->buffer.area, emu->buffer.bytes);
|
||||
emu->buffer->addr, emu->buffer->area, emu->buffer->bytes);
|
||||
#endif /* debug */
|
||||
/* Rate can be set per channel. */
|
||||
/* reg40 control host to fifo */
|
||||
@ -796,13 +796,13 @@ static int snd_ca0106_pcm_prepare_playback(struct snd_pcm_substream *substream)
|
||||
reg71 = (reg71 & ~reg71_mask) | reg71_set;
|
||||
snd_ca0106_ptr_write(emu, 0x71, 0, reg71);
|
||||
|
||||
/* FIXME: Check emu->buffer.size before actually writing to it. */
|
||||
/* FIXME: Check emu->buffer->size before actually writing to it. */
|
||||
for(i=0; i < runtime->periods; i++) {
|
||||
table_base[i*2] = runtime->dma_addr + (i * period_size_bytes);
|
||||
table_base[i*2+1] = period_size_bytes << 16;
|
||||
}
|
||||
|
||||
snd_ca0106_ptr_write(emu, PLAYBACK_LIST_ADDR, channel, emu->buffer.addr+(8*16*channel));
|
||||
snd_ca0106_ptr_write(emu, PLAYBACK_LIST_ADDR, channel, emu->buffer->addr+(8*16*channel));
|
||||
snd_ca0106_ptr_write(emu, PLAYBACK_LIST_SIZE, channel, (runtime->periods - 1) << 19);
|
||||
snd_ca0106_ptr_write(emu, PLAYBACK_LIST_PTR, channel, 0);
|
||||
snd_ca0106_ptr_write(emu, PLAYBACK_DMA_ADDR, channel, runtime->dma_addr);
|
||||
@ -853,7 +853,7 @@ static int snd_ca0106_pcm_prepare_capture(struct snd_pcm_substream *substream)
|
||||
runtime->dma_addr, runtime->dma_area, table_base);
|
||||
dev_dbg(emu->card->dev,
|
||||
"dma_addr=%x, dma_area=%p, dma_bytes(size)=%x\n",
|
||||
emu->buffer.addr, emu->buffer.area, emu->buffer.bytes);
|
||||
emu->buffer->addr, emu->buffer->area, emu->buffer->bytes);
|
||||
#endif /* debug */
|
||||
/* reg71 controls ADC rate. */
|
||||
switch (runtime->rate) {
|
||||
@ -1183,32 +1183,11 @@ static int snd_ca0106_ac97(struct snd_ca0106 *chip)
|
||||
|
||||
static void ca0106_stop_chip(struct snd_ca0106 *chip);
|
||||
|
||||
static int snd_ca0106_free(struct snd_ca0106 *chip)
|
||||
static void snd_ca0106_free(struct snd_card *card)
|
||||
{
|
||||
if (chip->res_port != NULL) {
|
||||
/* avoid access to already used hardware */
|
||||
ca0106_stop_chip(chip);
|
||||
}
|
||||
if (chip->irq >= 0)
|
||||
free_irq(chip->irq, chip);
|
||||
// release the data
|
||||
#if 1
|
||||
if (chip->buffer.area)
|
||||
snd_dma_free_pages(&chip->buffer);
|
||||
#endif
|
||||
struct snd_ca0106 *chip = card->private_data;
|
||||
|
||||
// release the i/o port
|
||||
release_and_free_resource(chip->res_port);
|
||||
|
||||
pci_disable_device(chip->pci);
|
||||
kfree(chip);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int snd_ca0106_dev_free(struct snd_device *device)
|
||||
{
|
||||
struct snd_ca0106 *chip = device->device_data;
|
||||
return snd_ca0106_free(chip);
|
||||
ca0106_stop_chip(chip);
|
||||
}
|
||||
|
||||
static irqreturn_t snd_ca0106_interrupt(int irq, void *dev_id)
|
||||
@ -1594,50 +1573,33 @@ static void ca0106_stop_chip(struct snd_ca0106 *chip)
|
||||
}
|
||||
|
||||
static int snd_ca0106_create(int dev, struct snd_card *card,
|
||||
struct pci_dev *pci,
|
||||
struct snd_ca0106 **rchip)
|
||||
struct pci_dev *pci)
|
||||
{
|
||||
struct snd_ca0106 *chip;
|
||||
struct snd_ca0106 *chip = card->private_data;
|
||||
const struct snd_ca0106_details *c;
|
||||
int err;
|
||||
static const struct snd_device_ops ops = {
|
||||
.dev_free = snd_ca0106_dev_free,
|
||||
};
|
||||
|
||||
*rchip = NULL;
|
||||
|
||||
err = pci_enable_device(pci);
|
||||
err = pcim_enable_device(pci);
|
||||
if (err < 0)
|
||||
return err;
|
||||
if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(32))) {
|
||||
dev_err(card->dev, "error to set 32bit mask DMA\n");
|
||||
pci_disable_device(pci);
|
||||
return -ENXIO;
|
||||
}
|
||||
|
||||
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
|
||||
if (chip == NULL) {
|
||||
pci_disable_device(pci);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
chip->card = card;
|
||||
chip->pci = pci;
|
||||
chip->irq = -1;
|
||||
|
||||
spin_lock_init(&chip->emu_lock);
|
||||
|
||||
err = pci_request_regions(pci, "snd_ca0106");
|
||||
if (err < 0)
|
||||
return err;
|
||||
chip->port = pci_resource_start(pci, 0);
|
||||
chip->res_port = request_region(chip->port, 0x20, "snd_ca0106");
|
||||
if (!chip->res_port) {
|
||||
snd_ca0106_free(chip);
|
||||
dev_err(card->dev, "cannot allocate the port\n");
|
||||
return -EBUSY;
|
||||
}
|
||||
|
||||
if (request_irq(pci->irq, snd_ca0106_interrupt,
|
||||
IRQF_SHARED, KBUILD_MODNAME, chip)) {
|
||||
snd_ca0106_free(chip);
|
||||
if (devm_request_irq(&pci->dev, pci->irq, snd_ca0106_interrupt,
|
||||
IRQF_SHARED, KBUILD_MODNAME, chip)) {
|
||||
dev_err(card->dev, "cannot grab irq\n");
|
||||
return -EBUSY;
|
||||
}
|
||||
@ -1645,11 +1607,9 @@ static int snd_ca0106_create(int dev, struct snd_card *card,
|
||||
card->sync_irq = chip->irq;
|
||||
|
||||
/* This stores the periods table. */
|
||||
if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, &pci->dev,
|
||||
1024, &chip->buffer) < 0) {
|
||||
snd_ca0106_free(chip);
|
||||
chip->buffer = snd_devm_alloc_pages(&pci->dev, SNDRV_DMA_TYPE_DEV, 1024);
|
||||
if (!chip->buffer)
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
pci_set_master(pci);
|
||||
/* read serial */
|
||||
@ -1678,13 +1638,6 @@ static int snd_ca0106_create(int dev, struct snd_card *card,
|
||||
c->name, chip->port, chip->irq);
|
||||
|
||||
ca0106_init_chip(chip, 0);
|
||||
|
||||
err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
|
||||
if (err < 0) {
|
||||
snd_ca0106_free(chip);
|
||||
return err;
|
||||
}
|
||||
*rchip = chip;
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -1787,36 +1740,37 @@ static int snd_ca0106_probe(struct pci_dev *pci,
|
||||
return -ENOENT;
|
||||
}
|
||||
|
||||
err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
|
||||
0, &card);
|
||||
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_ca0106_create(dev, card, pci, &chip);
|
||||
err = snd_ca0106_create(dev, card, pci);
|
||||
if (err < 0)
|
||||
goto error;
|
||||
card->private_data = chip;
|
||||
return err;
|
||||
card->private_free = snd_ca0106_free;
|
||||
|
||||
for (i = 0; i < 4; i++) {
|
||||
err = snd_ca0106_pcm(chip, i);
|
||||
if (err < 0)
|
||||
goto error;
|
||||
return err;
|
||||
}
|
||||
|
||||
if (chip->details->ac97 == 1) {
|
||||
/* The SB0410 and SB0413 do not have an AC97 chip. */
|
||||
err = snd_ca0106_ac97(chip);
|
||||
if (err < 0)
|
||||
goto error;
|
||||
return err;
|
||||
}
|
||||
err = snd_ca0106_mixer(chip);
|
||||
if (err < 0)
|
||||
goto error;
|
||||
return err;
|
||||
|
||||
dev_dbg(card->dev, "probe for MIDI channel A ...");
|
||||
err = snd_ca0106_midi(chip, CA0106_MIDI_CHAN_A);
|
||||
if (err < 0)
|
||||
goto error;
|
||||
return err;
|
||||
dev_dbg(card->dev, " done.\n");
|
||||
|
||||
#ifdef CONFIG_SND_PROC_FS
|
||||
@ -1825,20 +1779,11 @@ static int snd_ca0106_probe(struct pci_dev *pci,
|
||||
|
||||
err = snd_card_register(card);
|
||||
if (err < 0)
|
||||
goto error;
|
||||
return err;
|
||||
|
||||
pci_set_drvdata(pci, card);
|
||||
dev++;
|
||||
return 0;
|
||||
|
||||
error:
|
||||
snd_card_free(card);
|
||||
return err;
|
||||
}
|
||||
|
||||
static void snd_ca0106_remove(struct pci_dev *pci)
|
||||
{
|
||||
snd_card_free(pci_get_drvdata(pci));
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM_SLEEP
|
||||
@ -1894,7 +1839,6 @@ static struct pci_driver ca0106_driver = {
|
||||
.name = KBUILD_MODNAME,
|
||||
.id_table = snd_ca0106_ids,
|
||||
.probe = snd_ca0106_probe,
|
||||
.remove = snd_ca0106_remove,
|
||||
.driver = {
|
||||
.pm = SND_CA0106_PM_OPS,
|
||||
},
|
||||
|
||||
Loading…
Reference in New Issue
Block a user