[ALSA] azt2320 - Add PM support
Modules: AZT2320 driver
Add PM support to azt2320 driver.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/isa/azt2320.c b/sound/isa/azt2320.c
index db4e733..a530691 100644
--- a/sound/isa/azt2320.c
+++ b/sound/isa/azt2320.c
@@ -93,6 +93,7 @@
int dev_no;
struct pnp_dev *dev;
struct pnp_dev *devmpu;
+ struct snd_cs4231 *chip;
};
static struct pnp_card_device_id snd_azt2320_pnpids[] = {
@@ -329,32 +330,59 @@
static void __devexit snd_azt2320_pnp_remove(struct pnp_card_link * pcard)
{
- struct snd_card *card = (struct snd_card *) pnp_get_card_drvdata(pcard);
-
- snd_card_disconnect(card);
- snd_card_free_in_thread(card);
+ snd_card_free(pnp_get_card_drvdata(pcard));
+ pnp_set_card_drvdata(pcard, NULL);
}
+#ifdef CONFIG_PM
+static int snd_azt2320_pnp_suspend(struct pnp_card_link *pcard, pm_message_t state)
+{
+ struct snd_card *card = pnp_get_card_drvdata(pcard);
+ struct snd_card_azt2320 *acard = card->private_data;
+ struct snd_cs4231 *chip = acard->chip;
+
+ snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
+ chip->suspend(chip);
+ return 0;
+}
+
+static int snd_azt2320_pnp_resume(struct pnp_card_link *pcard)
+{
+ struct snd_card *card = pnp_get_card_drvdata(pcard);
+ struct snd_card_azt2320 *acard = card->private_data;
+ struct snd_cs4231 *chip = acard->chip;
+
+ chip->resume(chip);
+ snd_power_change_state(card, SNDRV_CTL_POWER_D0);
+ return 0;
+}
+#endif
+
static struct pnp_card_driver azt2320_pnpc_driver = {
.flags = PNP_DRIVER_RES_DISABLE,
.name = "azt2320",
.id_table = snd_azt2320_pnpids,
.probe = snd_azt2320_pnp_detect,
.remove = __devexit_p(snd_azt2320_pnp_remove),
+#ifdef CONFIG_PM
+ .suspend = snd_azt2320_pnp_suspend,
+ .resume = snd_azt2320_pnp_resume,
+#endif
};
static int __init alsa_card_azt2320_init(void)
{
- int cards = 0;
+ int cards;
- cards += pnp_register_card_driver(&azt2320_pnpc_driver);
-#ifdef MODULE
- if (!cards) {
+ cards = pnp_register_card_driver(&azt2320_pnpc_driver);
+ if (cards <= 0) {
pnp_unregister_card_driver(&azt2320_pnpc_driver);
+#ifdef MODULE
snd_printk(KERN_ERR "no AZT2320 based soundcards found\n");
- }
#endif
- return cards ? 0 : -ENODEV;
+ return -ENODEV;
+ }
+ return 0;
}
static void __exit alsa_card_azt2320_exit(void)