1 files changed, 101 insertions, 9 deletions

diff --git a/sound/pci/ice1712/ice1724.c b/sound/pci/ice1712/ice1724.c
index 36ade77cf371..6a560021e11f 100644
--- a/sound/pci/ice1712/ice1724.c
+++ b/sound/pci/ice1712/ice1724.c
@@ -560,6 +560,7 @@ static int snd_vt1724_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 
         case SNDRV_PCM_TRIGGER_START:
         case SNDRV_PCM_TRIGGER_STOP:
+        case SNDRV_PCM_TRIGGER_SUSPEND:
                 spin_lock(&ice->reg_lock);
                 old = inb(ICEMT1724(ice, DMA_CONTROL));
                 if (cmd == SNDRV_PCM_TRIGGER_START)
@@ -570,6 +571,10 @@ static int snd_vt1724_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
                 spin_unlock(&ice->reg_lock);
                 break;
 
+        case SNDRV_PCM_TRIGGER_RESUME:
+                /* apps will have to restart stream */
+                break;
+
         default:
                 return -EINVAL;
         }
@@ -2272,7 +2277,7 @@ static void __devinit snd_vt1724_chip_reset(struct snd_ice1712 *ice)
         msleep(10);
 }
 
-static int __devinit snd_vt1724_chip_init(struct snd_ice1712 *ice)
+static int snd_vt1724_chip_init(struct snd_ice1712 *ice)
 {
         outb(ice->eeprom.data[ICE_EEP2_SYSCONF], ICEREG1724(ice, SYS_CFG));
         outb(ice->eeprom.data[ICE_EEP2_ACLINK], ICEREG1724(ice, AC97_CFG));
@@ -2287,6 +2292,14 @@ static int __devinit snd_vt1724_chip_init(struct snd_ice1712 *ice)
 
         outb(0, ICEREG1724(ice, POWERDOWN));
 
+        /* MPU_RX and TX irq masks are cleared later dynamically */
+        outb(VT1724_IRQ_MPU_RX | VT1724_IRQ_MPU_TX , ICEREG1724(ice, IRQMASK));
+
+        /* don't handle FIFO overrun/underruns (just yet),
+         * since they cause machine lockups
+         */
+        outb(VT1724_MULTI_FIFO_ERR, ICEMT1724(ice, DMA_INT_MASK));
+
         return 0;
 }
 
@@ -2431,6 +2444,8 @@ static int __devinit snd_vt1724_create(struct snd_card *card,
         snd_vt1724_proc_init(ice);
         synchronize_irq(pci->irq);
 
+        card->private_data = ice;
+
         err = pci_request_regions(pci, "ICE1724");
         if (err < 0) {
                 kfree(ice);
@@ -2459,14 +2474,6 @@ static int __devinit snd_vt1724_create(struct snd_card *card,
                 return -EIO;
         }
 
-        /* MPU_RX and TX irq masks are cleared later dynamically */
-        outb(VT1724_IRQ_MPU_RX | VT1724_IRQ_MPU_TX , ICEREG1724(ice, IRQMASK));
-
-        /* don't handle FIFO overrun/underruns (just yet),
-         * since they cause machine lockups
-         */
-        outb(VT1724_MULTI_FIFO_ERR, ICEMT1724(ice, DMA_INT_MASK));
-
         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, ice, &ops);
         if (err < 0) {
                 snd_vt1724_free(ice);
@@ -2650,11 +2657,96 @@ static void __devexit snd_vt1724_remove(struct pci_dev *pci)
         pci_set_drvdata(pci, NULL);
 }
 
+#ifdef CONFIG_PM
+static int snd_vt1724_suspend(struct pci_dev *pci, pm_message_t state)
+{
+        struct snd_card *card = pci_get_drvdata(pci);
+        struct snd_ice1712 *ice = card->private_data;
+
+        if (!ice->pm_suspend_enabled)
+                return 0;
+
+        snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
+
+        snd_pcm_suspend_all(ice->pcm);
+        snd_pcm_suspend_all(ice->pcm_pro);
+        snd_pcm_suspend_all(ice->pcm_ds);
+        snd_ac97_suspend(ice->ac97);
+
+        spin_lock_irq(&ice->reg_lock);
+        ice->pm_saved_is_spdif_master = ice->is_spdif_master(ice);
+        ice->pm_saved_spdif_ctrl = inw(ICEMT1724(ice, SPDIF_CTRL));
+        ice->pm_saved_spdif_cfg = inb(ICEREG1724(ice, SPDIF_CFG));
+        ice->pm_saved_route = inl(ICEMT1724(ice, ROUTE_PLAYBACK));
+        spin_unlock_irq(&ice->reg_lock);
+
+        if (ice->pm_suspend)
+                ice->pm_suspend(ice);
+
+        pci_disable_device(pci);
+        pci_save_state(pci);
+        pci_set_power_state(pci, pci_choose_state(pci, state));
+        return 0;
+}
+
+static int snd_vt1724_resume(struct pci_dev *pci)
+{
+        struct snd_card *card = pci_get_drvdata(pci);
+        struct snd_ice1712 *ice = card->private_data;
+
+        if (!ice->pm_suspend_enabled)
+                return 0;
+
+        pci_set_power_state(pci, PCI_D0);
+        pci_restore_state(pci);
+
+        if (pci_enable_device(pci) < 0) {
+                snd_card_disconnect(card);
+                return -EIO;
+        }
+
+        pci_set_master(pci);
+
+        snd_vt1724_chip_reset(ice);
+
+        if (snd_vt1724_chip_init(ice) < 0) {
+                snd_card_disconnect(card);
+                return -EIO;
+        }
+
+        if (ice->pm_resume)
+                ice->pm_resume(ice);
+
+        if (ice->pm_saved_is_spdif_master) {
+                /* switching to external clock via SPDIF */
+                ice->set_spdif_clock(ice);
+        } else {
+                /* internal on-card clock */
+                snd_vt1724_set_pro_rate(ice, ice->pro_rate_default, 1);
+        }
+
+        update_spdif_bits(ice, ice->pm_saved_spdif_ctrl);
+
+        outb(ice->pm_saved_spdif_cfg, ICEREG1724(ice, SPDIF_CFG));
+        outl(ice->pm_saved_route, ICEMT1724(ice, ROUTE_PLAYBACK));
+
+        if (ice->ac97)
+                snd_ac97_resume(ice->ac97);
+
+        snd_power_change_state(card, SNDRV_CTL_POWER_D0);
+        return 0;
+}
+#endif
+
 static struct pci_driver driver = {
         .name = "ICE1724",
         .id_table = snd_vt1724_ids,
         .probe = snd_vt1724_probe,
         .remove = __devexit_p(snd_vt1724_remove),
+#ifdef CONFIG_PM
+        .suspend = snd_vt1724_suspend,
+        .resume = snd_vt1724_resume,
+#endif
 };
 
 static int __init alsa_card_ice1724_init(void)