+#ifdef CONFIG_PM
+/*
+ * power management
+ */
+static int snd_via82xx_suspend(snd_card_t *card, unsigned int state)
+{
+ via82xx_t *chip = snd_magic_cast(via82xx_t, card->pm_private_data, return -EINVAL);
+ int i;
+
+ for (i = 0; i < 2; i++)
+ if (chip->pcms[i])
+ snd_pcm_suspend_all(chip->pcms[i]);
+ for (i = 0; i < chip->num_devs; i++)
+ snd_via82xx_channel_reset(chip, &chip->devs[i]);
+ synchronize_irq(chip->irq);
+ snd_ac97_suspend(chip->ac97);
+
+ /* save misc values */
+ if (chip->chip_type != TYPE_VIA686) {
+ pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
+ chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
+ chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
+ }
+
+ pci_save_state(chip->pci, chip->pci_state);
+ pci_set_power_state(chip->pci, 3);
+ pci_disable_device(chip->pci);
+ snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
+ return 0;
+}
+
+static int snd_via82xx_resume(snd_card_t *card, unsigned int state)
+{
+ via82xx_t *chip = snd_magic_cast(via82xx_t, card->pm_private_data, return -EINVAL);
+ int idx, i;
+
+ pci_enable_device(chip->pci);
+ pci_restore_state(chip->pci, chip->pci_state);
+ pci_set_power_state(chip->pci, 0);
+
+ snd_via82xx_chip_init(chip);
+
+ if (chip->chip_type == TYPE_VIA686) {
+ if (chip->mpu_port_saved)
+ pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
+ pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
+ pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
+ } else {
+ pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
+ outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
+ outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
+ for (idx = 0; idx < 4; idx++) {
+ unsigned long port = chip->port + 0x10 * idx;
+ for (i = 0; i < 2; i++)
+ outb(chip->playback_volume[idx][i], port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
+ }
+ }
+
+ snd_ac97_resume(chip->ac97);
+
+ for (i = 0; i < chip->num_devs; i++)
+ snd_via82xx_channel_reset(chip, &chip->devs[i]);
+
+ snd_power_change_state(card, SNDRV_CTL_POWER_D0);
+ return 0;
+}
+#endif /* CONFIG_PM */
+