ALSA: ice1712: add suspend support for ICE1712 chip

Add suspend/resume support for ICE1712 chip.
Card-specific subdrivers need to enable it and provide callbacks that suspend/resume the codecs.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/ice1712/ice1712.c b/sound/pci/ice1712/ice1712.c
index 0710ec7e69d3fdeba9d2e0b8616e271cc7d3924c..291672fc4a99f2428c171c9a57955280776df209 100644 (file)
--- a/sound/pci/ice1712/ice1712.c
+++ b/sound/pci/ice1712/ice1712.c
@@ -2434,6 +2434,13 @@ static int snd_ice1712_chip_init(struct snd_ice1712 *ice)
                snd_ice1712_write(ice, ICE1712_IREG_CONSUMER_POWERDOWN, 0);
        }
        snd_ice1712_set_pro_rate(ice, 48000, 1);
+       /* unmask used interrupts */
+       outb(((ice->eeprom.data[ICE_EEP1_CODEC] & ICE1712_CFG_2xMPU401) == 0 ?
+             ICE1712_IRQ_MPU2 : 0) |
+            ((ice->eeprom.data[ICE_EEP1_CODEC] & ICE1712_CFG_NO_CON_AC97) ?
+             ICE1712_IRQ_PBKDS | ICE1712_IRQ_CONCAP | ICE1712_IRQ_CONPBK : 0),
+            ICEREG(ice, IRQMASK));
+       outb(0x00, ICEMT(ice, IRQ));
 
        return 0;
 }
@@ -2596,6 +2603,7 @@ static int snd_ice1712_create(struct snd_card *card,
        ice->pci = pci;
        ice->irq = -1;
        pci_set_master(pci);
+       /* disable legacy emulation */
        pci_write_config_word(ice->pci, 0x40, 0x807f);
        pci_write_config_word(ice->pci, 0x42, 0x0006);
        snd_ice1712_proc_init(ice);
@@ -2632,14 +2640,6 @@ static int snd_ice1712_create(struct snd_card *card,
                return -EIO;
        }
 
-       /* unmask used interrupts */
-       outb(((ice->eeprom.data[ICE_EEP1_CODEC] & ICE1712_CFG_2xMPU401) == 0 ?
-             ICE1712_IRQ_MPU2 : 0) |
-            ((ice->eeprom.data[ICE_EEP1_CODEC] & ICE1712_CFG_NO_CON_AC97) ?
-             ICE1712_IRQ_PBKDS | ICE1712_IRQ_CONCAP | ICE1712_IRQ_CONPBK : 0),
-            ICEREG(ice, IRQMASK));
-       outb(0x00, ICEMT(ice, IRQ));
-
        err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, ice, &ops);
        if (err < 0) {
                snd_ice1712_free(ice);
@@ -2815,11 +2815,80 @@ static void snd_ice1712_remove(struct pci_dev *pci)
        snd_card_free(card);
 }
 
+#ifdef CONFIG_PM_SLEEP
+static int snd_ice1712_suspend(struct device *dev)
+{
+       struct pci_dev *pci = to_pci_dev(dev);
+       struct snd_card *card = dev_get_drvdata(dev);
+       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);
+
+       if (ice->pm_suspend)
+               ice->pm_suspend(ice);
+
+       pci_disable_device(pci);
+       pci_save_state(pci);
+       pci_set_power_state(pci, PCI_D3hot);
+       return 0;
+}
+
+static int snd_ice1712_resume(struct device *dev)
+{
+       struct pci_dev *pci = to_pci_dev(dev);
+       struct snd_card *card = dev_get_drvdata(dev);
+       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);
+
+       if (snd_ice1712_chip_init(ice) < 0) {
+               snd_card_disconnect(card);
+               return -EIO;
+       }
+
+       if (ice->pm_resume)
+               ice->pm_resume(ice);
+
+       if (ice->ac97)
+               snd_ac97_resume(ice->ac97);
+
+       snd_power_change_state(card, SNDRV_CTL_POWER_D0);
+       return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(snd_ice1712_pm, snd_ice1712_suspend, snd_ice1712_resume);
+#define SND_VT1712_PM_OPS      &snd_ice1712_pm
+#else
+#define SND_VT1712_PM_OPS      NULL
+#endif /* CONFIG_PM_SLEEP */
+
 static struct pci_driver ice1712_driver = {
        .name = KBUILD_MODNAME,
        .id_table = snd_ice1712_ids,
        .probe = snd_ice1712_probe,
        .remove = snd_ice1712_remove,
+       .driver = {
+               .pm = SND_VT1712_PM_OPS,
+       },
 };
 
 module_pci_driver(ice1712_driver);