linux/sound/pci/als300.c
Takashi Iwai ab8bce9da6 ALSA: als300: Fix the missing snd_card_free() call at probe error
The previous cleanup with devres may lead to the incorrect release
orders at the probe error handling due to the devres's nature.  Until
we register the card, snd_card_free() has to be called at first for
releasing the stuff properly when the driver tries to manage and
release the stuff via card->private_free().

This patch fixes it by calling snd_card_free() manually on the error
from the probe callback.

Fixes: 21a9314cf9 ("ALSA: als300: Allocate resources with device-managed APIs")
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220412102636.16000-31-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-04-12 17:58:38 +02:00

747 lines
20 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* als300.c - driver for Avance Logic ALS300/ALS300+ soundcards.
* Copyright (C) 2005 by Ash Willis <ashwillis@programmer.net>
*
* TODO
* 4 channel playback for ALS300+
* gameport
* mpu401
* opl3
*
* NOTES
* The BLOCK_COUNTER registers for the ALS300(+) return a figure related to
* the position in the current period, NOT the whole buffer. It is important
* to know which period we are in so we can calculate the correct pointer.
* This is why we always use 2 periods. We can then use a flip-flop variable
* to keep track of what period we are in.
*/
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/io.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/initval.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/ac97_codec.h>
#include <sound/opl3.h>
/* snd_als300_set_irq_flag */
#define IRQ_DISABLE 0
#define IRQ_ENABLE 1
/* I/O port layout */
#define AC97_ACCESS 0x00
#define AC97_READ 0x04
#define AC97_STATUS 0x06
#define AC97_DATA_AVAIL (1<<6)
#define AC97_BUSY (1<<7)
#define ALS300_IRQ_STATUS 0x07 /* ALS300 Only */
#define IRQ_PLAYBACK (1<<3)
#define IRQ_CAPTURE (1<<2)
#define GCR_DATA 0x08
#define GCR_INDEX 0x0C
#define ALS300P_DRAM_IRQ_STATUS 0x0D /* ALS300+ Only */
#define MPU_IRQ_STATUS 0x0E /* ALS300 Rev. E+, ALS300+ */
#define ALS300P_IRQ_STATUS 0x0F /* ALS300+ Only */
/* General Control Registers */
#define PLAYBACK_START 0x80
#define PLAYBACK_END 0x81
#define PLAYBACK_CONTROL 0x82
#define TRANSFER_START (1<<16)
#define FIFO_PAUSE (1<<17)
#define RECORD_START 0x83
#define RECORD_END 0x84
#define RECORD_CONTROL 0x85
#define DRAM_WRITE_CONTROL 0x8B
#define WRITE_TRANS_START (1<<16)
#define DRAM_MODE_2 (1<<17)
#define MISC_CONTROL 0x8C
#define IRQ_SET_BIT (1<<15)
#define VMUTE_NORMAL (1<<20)
#define MMUTE_NORMAL (1<<21)
#define MUS_VOC_VOL 0x8E
#define PLAYBACK_BLOCK_COUNTER 0x9A
#define RECORD_BLOCK_COUNTER 0x9B
#define DEBUG_PLAY_REC 0
#if DEBUG_PLAY_REC
#define snd_als300_dbgplay(format, args...) printk(KERN_ERR format, ##args)
#else
#define snd_als300_dbgplay(format, args...)
#endif
enum {DEVICE_ALS300, DEVICE_ALS300_PLUS};
MODULE_AUTHOR("Ash Willis <ashwillis@programmer.net>");
MODULE_DESCRIPTION("Avance Logic ALS300");
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 ALS300 sound card.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for ALS300 sound card.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable ALS300 sound card.");
struct snd_als300 {
unsigned long port;
spinlock_t reg_lock;
struct snd_card *card;
struct pci_dev *pci;
struct snd_pcm *pcm;
struct snd_pcm_substream *playback_substream;
struct snd_pcm_substream *capture_substream;
struct snd_ac97 *ac97;
struct snd_opl3 *opl3;
struct resource *res_port;
int irq;
int chip_type; /* ALS300 or ALS300+ */
char revision;
};
struct snd_als300_substream_data {
int period_flipflop;
int control_register;
int block_counter_register;
};
static const struct pci_device_id snd_als300_ids[] = {
{ 0x4005, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALS300 },
{ 0x4005, 0x0308, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALS300_PLUS },
{ 0, }
};
MODULE_DEVICE_TABLE(pci, snd_als300_ids);
static inline u32 snd_als300_gcr_read(unsigned long port, unsigned short reg)
{
outb(reg, port+GCR_INDEX);
return inl(port+GCR_DATA);
}
static inline void snd_als300_gcr_write(unsigned long port,
unsigned short reg, u32 val)
{
outb(reg, port+GCR_INDEX);
outl(val, port+GCR_DATA);
}
/* Enable/Disable Interrupts */
static void snd_als300_set_irq_flag(struct snd_als300 *chip, int cmd)
{
u32 tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
/* boolean XOR check, since old vs. new hardware have
directly reversed bit setting for ENABLE and DISABLE.
ALS300+ acts like newer versions of ALS300 */
if (((chip->revision > 5 || chip->chip_type == DEVICE_ALS300_PLUS) ^
(cmd == IRQ_ENABLE)) == 0)
tmp |= IRQ_SET_BIT;
else
tmp &= ~IRQ_SET_BIT;
snd_als300_gcr_write(chip->port, MISC_CONTROL, tmp);
}
static void snd_als300_free(struct snd_card *card)
{
struct snd_als300 *chip = card->private_data;
snd_als300_set_irq_flag(chip, IRQ_DISABLE);
}
static irqreturn_t snd_als300_interrupt(int irq, void *dev_id)
{
u8 status;
struct snd_als300 *chip = dev_id;
struct snd_als300_substream_data *data;
status = inb(chip->port+ALS300_IRQ_STATUS);
if (!status) /* shared IRQ, for different device?? Exit ASAP! */
return IRQ_NONE;
/* ACK everything ASAP */
outb(status, chip->port+ALS300_IRQ_STATUS);
if (status & IRQ_PLAYBACK) {
if (chip->pcm && chip->playback_substream) {
data = chip->playback_substream->runtime->private_data;
data->period_flipflop ^= 1;
snd_pcm_period_elapsed(chip->playback_substream);
snd_als300_dbgplay("IRQ_PLAYBACK\n");
}
}
if (status & IRQ_CAPTURE) {
if (chip->pcm && chip->capture_substream) {
data = chip->capture_substream->runtime->private_data;
data->period_flipflop ^= 1;
snd_pcm_period_elapsed(chip->capture_substream);
snd_als300_dbgplay("IRQ_CAPTURE\n");
}
}
return IRQ_HANDLED;
}
static irqreturn_t snd_als300plus_interrupt(int irq, void *dev_id)
{
u8 general, mpu, dram;
struct snd_als300 *chip = dev_id;
struct snd_als300_substream_data *data;
general = inb(chip->port+ALS300P_IRQ_STATUS);
mpu = inb(chip->port+MPU_IRQ_STATUS);
dram = inb(chip->port+ALS300P_DRAM_IRQ_STATUS);
/* shared IRQ, for different device?? Exit ASAP! */
if ((general == 0) && ((mpu & 0x80) == 0) && ((dram & 0x01) == 0))
return IRQ_NONE;
if (general & IRQ_PLAYBACK) {
if (chip->pcm && chip->playback_substream) {
outb(IRQ_PLAYBACK, chip->port+ALS300P_IRQ_STATUS);
data = chip->playback_substream->runtime->private_data;
data->period_flipflop ^= 1;
snd_pcm_period_elapsed(chip->playback_substream);
snd_als300_dbgplay("IRQ_PLAYBACK\n");
}
}
if (general & IRQ_CAPTURE) {
if (chip->pcm && chip->capture_substream) {
outb(IRQ_CAPTURE, chip->port+ALS300P_IRQ_STATUS);
data = chip->capture_substream->runtime->private_data;
data->period_flipflop ^= 1;
snd_pcm_period_elapsed(chip->capture_substream);
snd_als300_dbgplay("IRQ_CAPTURE\n");
}
}
/* FIXME: Ack other interrupt types. Not important right now as
* those other devices aren't enabled. */
return IRQ_HANDLED;
}
static unsigned short snd_als300_ac97_read(struct snd_ac97 *ac97,
unsigned short reg)
{
int i;
struct snd_als300 *chip = ac97->private_data;
for (i = 0; i < 1000; i++) {
if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
break;
udelay(10);
}
outl((reg << 24) | (1 << 31), chip->port+AC97_ACCESS);
for (i = 0; i < 1000; i++) {
if ((inb(chip->port+AC97_STATUS) & (AC97_DATA_AVAIL)) != 0)
break;
udelay(10);
}
return inw(chip->port+AC97_READ);
}
static void snd_als300_ac97_write(struct snd_ac97 *ac97,
unsigned short reg, unsigned short val)
{
int i;
struct snd_als300 *chip = ac97->private_data;
for (i = 0; i < 1000; i++) {
if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
break;
udelay(10);
}
outl((reg << 24) | val, chip->port+AC97_ACCESS);
}
static int snd_als300_ac97(struct snd_als300 *chip)
{
struct snd_ac97_bus *bus;
struct snd_ac97_template ac97;
int err;
static const struct snd_ac97_bus_ops ops = {
.write = snd_als300_ac97_write,
.read = snd_als300_ac97_read,
};
err = snd_ac97_bus(chip->card, 0, &ops, NULL, &bus);
if (err < 0)
return err;
memset(&ac97, 0, sizeof(ac97));
ac97.private_data = chip;
return snd_ac97_mixer(bus, &ac97, &chip->ac97);
}
/* hardware definition
*
* In AC97 mode, we always use 48k/16bit/stereo.
* Any request to change data type is ignored by
* the card when it is running outside of legacy
* mode.
*/
static const struct snd_pcm_hardware snd_als300_playback_hw =
{
.info = (SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_PAUSE |
SNDRV_PCM_INFO_MMAP_VALID),
.formats = SNDRV_PCM_FMTBIT_S16,
.rates = SNDRV_PCM_RATE_48000,
.rate_min = 48000,
.rate_max = 48000,
.channels_min = 2,
.channels_max = 2,
.buffer_bytes_max = 64 * 1024,
.period_bytes_min = 64,
.period_bytes_max = 32 * 1024,
.periods_min = 2,
.periods_max = 2,
};
static const struct snd_pcm_hardware snd_als300_capture_hw =
{
.info = (SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_PAUSE |
SNDRV_PCM_INFO_MMAP_VALID),
.formats = SNDRV_PCM_FMTBIT_S16,
.rates = SNDRV_PCM_RATE_48000,
.rate_min = 48000,
.rate_max = 48000,
.channels_min = 2,
.channels_max = 2,
.buffer_bytes_max = 64 * 1024,
.period_bytes_min = 64,
.period_bytes_max = 32 * 1024,
.periods_min = 2,
.periods_max = 2,
};
static int snd_als300_playback_open(struct snd_pcm_substream *substream)
{
struct snd_als300 *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
GFP_KERNEL);
if (!data)
return -ENOMEM;
chip->playback_substream = substream;
runtime->hw = snd_als300_playback_hw;
runtime->private_data = data;
data->control_register = PLAYBACK_CONTROL;
data->block_counter_register = PLAYBACK_BLOCK_COUNTER;
return 0;
}
static int snd_als300_playback_close(struct snd_pcm_substream *substream)
{
struct snd_als300 *chip = snd_pcm_substream_chip(substream);
struct snd_als300_substream_data *data;
data = substream->runtime->private_data;
kfree(data);
chip->playback_substream = NULL;
return 0;
}
static int snd_als300_capture_open(struct snd_pcm_substream *substream)
{
struct snd_als300 *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
GFP_KERNEL);
if (!data)
return -ENOMEM;
chip->capture_substream = substream;
runtime->hw = snd_als300_capture_hw;
runtime->private_data = data;
data->control_register = RECORD_CONTROL;
data->block_counter_register = RECORD_BLOCK_COUNTER;
return 0;
}
static int snd_als300_capture_close(struct snd_pcm_substream *substream)
{
struct snd_als300 *chip = snd_pcm_substream_chip(substream);
struct snd_als300_substream_data *data;
data = substream->runtime->private_data;
kfree(data);
chip->capture_substream = NULL;
return 0;
}
static int snd_als300_playback_prepare(struct snd_pcm_substream *substream)
{
u32 tmp;
struct snd_als300 *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
spin_lock_irq(&chip->reg_lock);
tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
tmp &= ~TRANSFER_START;
snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n",
period_bytes, buffer_bytes);
/* set block size */
tmp &= 0xffff0000;
tmp |= period_bytes - 1;
snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL, tmp);
/* set dma area */
snd_als300_gcr_write(chip->port, PLAYBACK_START,
runtime->dma_addr);
snd_als300_gcr_write(chip->port, PLAYBACK_END,
runtime->dma_addr + buffer_bytes - 1);
spin_unlock_irq(&chip->reg_lock);
return 0;
}
static int snd_als300_capture_prepare(struct snd_pcm_substream *substream)
{
u32 tmp;
struct snd_als300 *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
spin_lock_irq(&chip->reg_lock);
tmp = snd_als300_gcr_read(chip->port, RECORD_CONTROL);
tmp &= ~TRANSFER_START;
snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n", period_bytes,
buffer_bytes);
/* set block size */
tmp &= 0xffff0000;
tmp |= period_bytes - 1;
/* set dma area */
snd_als300_gcr_write(chip->port, RECORD_CONTROL, tmp);
snd_als300_gcr_write(chip->port, RECORD_START,
runtime->dma_addr);
snd_als300_gcr_write(chip->port, RECORD_END,
runtime->dma_addr + buffer_bytes - 1);
spin_unlock_irq(&chip->reg_lock);
return 0;
}
static int snd_als300_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_als300 *chip = snd_pcm_substream_chip(substream);
u32 tmp;
struct snd_als300_substream_data *data;
unsigned short reg;
int ret = 0;
data = substream->runtime->private_data;
reg = data->control_register;
spin_lock(&chip->reg_lock);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
tmp = snd_als300_gcr_read(chip->port, reg);
data->period_flipflop = 1;
snd_als300_gcr_write(chip->port, reg, tmp | TRANSFER_START);
snd_als300_dbgplay("TRIGGER START\n");
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
tmp = snd_als300_gcr_read(chip->port, reg);
snd_als300_gcr_write(chip->port, reg, tmp & ~TRANSFER_START);
snd_als300_dbgplay("TRIGGER STOP\n");
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
tmp = snd_als300_gcr_read(chip->port, reg);
snd_als300_gcr_write(chip->port, reg, tmp | FIFO_PAUSE);
snd_als300_dbgplay("TRIGGER PAUSE\n");
break;
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
tmp = snd_als300_gcr_read(chip->port, reg);
snd_als300_gcr_write(chip->port, reg, tmp & ~FIFO_PAUSE);
snd_als300_dbgplay("TRIGGER RELEASE\n");
break;
default:
snd_als300_dbgplay("TRIGGER INVALID\n");
ret = -EINVAL;
}
spin_unlock(&chip->reg_lock);
return ret;
}
static snd_pcm_uframes_t snd_als300_pointer(struct snd_pcm_substream *substream)
{
u16 current_ptr;
struct snd_als300 *chip = snd_pcm_substream_chip(substream);
struct snd_als300_substream_data *data;
unsigned short period_bytes;
data = substream->runtime->private_data;
period_bytes = snd_pcm_lib_period_bytes(substream);
spin_lock(&chip->reg_lock);
current_ptr = (u16) snd_als300_gcr_read(chip->port,
data->block_counter_register) + 4;
spin_unlock(&chip->reg_lock);
if (current_ptr > period_bytes)
current_ptr = 0;
else
current_ptr = period_bytes - current_ptr;
if (data->period_flipflop == 0)
current_ptr += period_bytes;
snd_als300_dbgplay("Pointer (bytes): %d\n", current_ptr);
return bytes_to_frames(substream->runtime, current_ptr);
}
static const struct snd_pcm_ops snd_als300_playback_ops = {
.open = snd_als300_playback_open,
.close = snd_als300_playback_close,
.prepare = snd_als300_playback_prepare,
.trigger = snd_als300_trigger,
.pointer = snd_als300_pointer,
};
static const struct snd_pcm_ops snd_als300_capture_ops = {
.open = snd_als300_capture_open,
.close = snd_als300_capture_close,
.prepare = snd_als300_capture_prepare,
.trigger = snd_als300_trigger,
.pointer = snd_als300_pointer,
};
static int snd_als300_new_pcm(struct snd_als300 *chip)
{
struct snd_pcm *pcm;
int err;
err = snd_pcm_new(chip->card, "ALS300", 0, 1, 1, &pcm);
if (err < 0)
return err;
pcm->private_data = chip;
strcpy(pcm->name, "ALS300");
chip->pcm = pcm;
/* set operators */
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
&snd_als300_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
&snd_als300_capture_ops);
/* pre-allocation of buffers */
snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, &chip->pci->dev,
64*1024, 64*1024);
return 0;
}
static void snd_als300_init(struct snd_als300 *chip)
{
unsigned long flags;
u32 tmp;
spin_lock_irqsave(&chip->reg_lock, flags);
chip->revision = (snd_als300_gcr_read(chip->port, MISC_CONTROL) >> 16)
& 0x0000000F;
/* Setup DRAM */
tmp = snd_als300_gcr_read(chip->port, DRAM_WRITE_CONTROL);
snd_als300_gcr_write(chip->port, DRAM_WRITE_CONTROL,
(tmp | DRAM_MODE_2)
& ~WRITE_TRANS_START);
/* Enable IRQ output */
snd_als300_set_irq_flag(chip, IRQ_ENABLE);
/* Unmute hardware devices so their outputs get routed to
* the onboard mixer */
tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
snd_als300_gcr_write(chip->port, MISC_CONTROL,
tmp | VMUTE_NORMAL | MMUTE_NORMAL);
/* Reset volumes */
snd_als300_gcr_write(chip->port, MUS_VOC_VOL, 0);
/* Make sure playback transfer is stopped */
tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL,
tmp & ~TRANSFER_START);
spin_unlock_irqrestore(&chip->reg_lock, flags);
}
static int snd_als300_create(struct snd_card *card,
struct pci_dev *pci, int chip_type)
{
struct snd_als300 *chip = card->private_data;
void *irq_handler;
int err;
err = pcim_enable_device(pci);
if (err < 0)
return err;
if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(28))) {
dev_err(card->dev, "error setting 28bit DMA mask\n");
return -ENXIO;
}
pci_set_master(pci);
chip->card = card;
chip->pci = pci;
chip->irq = -1;
chip->chip_type = chip_type;
spin_lock_init(&chip->reg_lock);
err = pci_request_regions(pci, "ALS300");
if (err < 0)
return err;
chip->port = pci_resource_start(pci, 0);
if (chip->chip_type == DEVICE_ALS300_PLUS)
irq_handler = snd_als300plus_interrupt;
else
irq_handler = snd_als300_interrupt;
if (devm_request_irq(&pci->dev, pci->irq, irq_handler, IRQF_SHARED,
KBUILD_MODNAME, chip)) {
dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
return -EBUSY;
}
chip->irq = pci->irq;
card->sync_irq = chip->irq;
card->private_free = snd_als300_free;
snd_als300_init(chip);
err = snd_als300_ac97(chip);
if (err < 0) {
dev_err(card->dev, "Could not create ac97\n");
return err;
}
err = snd_als300_new_pcm(chip);
if (err < 0) {
dev_err(card->dev, "Could not create PCM\n");
return err;
}
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int snd_als300_suspend(struct device *dev)
{
struct snd_card *card = dev_get_drvdata(dev);
struct snd_als300 *chip = card->private_data;
snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
snd_ac97_suspend(chip->ac97);
return 0;
}
static int snd_als300_resume(struct device *dev)
{
struct snd_card *card = dev_get_drvdata(dev);
struct snd_als300 *chip = card->private_data;
snd_als300_init(chip);
snd_ac97_resume(chip->ac97);
snd_power_change_state(card, SNDRV_CTL_POWER_D0);
return 0;
}
static SIMPLE_DEV_PM_OPS(snd_als300_pm, snd_als300_suspend, snd_als300_resume);
#define SND_ALS300_PM_OPS &snd_als300_pm
#else
#define SND_ALS300_PM_OPS NULL
#endif
static int snd_als300_probe(struct pci_dev *pci,
const struct pci_device_id *pci_id)
{
static int dev;
struct snd_card *card;
struct snd_als300 *chip;
int err, chip_type;
if (dev >= SNDRV_CARDS)
return -ENODEV;
if (!enable[dev]) {
dev++;
return -ENOENT;
}
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;
chip_type = pci_id->driver_data;
err = snd_als300_create(card, pci, chip_type);
if (err < 0)
goto error;
strcpy(card->driver, "ALS300");
if (chip->chip_type == DEVICE_ALS300_PLUS)
/* don't know much about ALS300+ yet
* print revision number for now */
sprintf(card->shortname, "ALS300+ (Rev. %d)", chip->revision);
else
sprintf(card->shortname, "ALS300 (Rev. %c)", 'A' +
chip->revision - 1);
sprintf(card->longname, "%s at 0x%lx irq %i",
card->shortname, chip->port, chip->irq);
err = snd_card_register(card);
if (err < 0)
goto error;
pci_set_drvdata(pci, card);
dev++;
return 0;
error:
snd_card_free(card);
return err;
}
static struct pci_driver als300_driver = {
.name = KBUILD_MODNAME,
.id_table = snd_als300_ids,
.probe = snd_als300_probe,
.driver = {
.pm = SND_ALS300_PM_OPS,
},
};
module_pci_driver(als300_driver);