ALSA: ice1712: Save/restore routing and rate registers

Save/restore routing and rate registers during suspend/resume.
This fixes S/PDIF input being disabled after resume.
Tested with Audiophile 24/96.

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 291672fc4a99f2428c171c9a57955280776df209..da005493f060c70546bfc78cfe5e780f9f78dda4 100644 (file)
--- a/sound/pci/ice1712/ice1712.c
+++ b/sound/pci/ice1712/ice1712.c
@@ -1048,6 +1048,8 @@ __out:
        old = inb(ICEMT(ice, RATE));
        if (!force && old == val)
                goto __out;
+
+       ice->cur_rate = rate;
        outb(val, ICEMT(ice, RATE));
        spin_unlock_irqrestore(&ice->reg_lock, flags);
 
@@ -2832,6 +2834,12 @@ static int snd_ice1712_suspend(struct device *dev)
        snd_pcm_suspend_all(ice->pcm_ds);
        snd_ac97_suspend(ice->ac97);
 
+       spin_lock_irq(&ice->reg_lock);
+       ice->pm_saved_is_spdif_master = is_spdif_master(ice);
+       ice->pm_saved_spdif_ctrl = inw(ICEMT(ice, ROUTE_SPDOUT));
+       ice->pm_saved_route = inw(ICEMT(ice, ROUTE_PSDOUT03));
+       spin_unlock_irq(&ice->reg_lock);
+
        if (ice->pm_suspend)
                ice->pm_suspend(ice);
 
@@ -2846,6 +2854,7 @@ 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;
+       int rate;
 
        if (!ice->pm_suspend_enabled)
                return 0;
@@ -2860,14 +2869,37 @@ static int snd_ice1712_resume(struct device *dev)
 
        pci_set_master(pci);
 
+       if (ice->cur_rate)
+               rate = ice->cur_rate;
+       else
+               rate = PRO_RATE_DEFAULT;
+
        if (snd_ice1712_chip_init(ice) < 0) {
                snd_card_disconnect(card);
                return -EIO;
        }
 
+       ice->cur_rate = rate;
+
        if (ice->pm_resume)
                ice->pm_resume(ice);
 
+       if (ice->pm_saved_is_spdif_master) {
+               /* switching to external clock via SPDIF */
+               spin_lock_irq(&ice->reg_lock);
+               outb(inb(ICEMT(ice, RATE)) | ICE1712_SPDIF_MASTER,
+                       ICEMT(ice, RATE));
+               spin_unlock_irq(&ice->reg_lock);
+               snd_ice1712_set_input_clock_source(ice, 1);
+       } else {
+               /* internal on-card clock */
+               snd_ice1712_set_pro_rate(ice, rate, 1);
+               snd_ice1712_set_input_clock_source(ice, 0);
+       }
+
+       outw(ice->pm_saved_spdif_ctrl, ICEMT(ice, ROUTE_SPDOUT));
+       outw(ice->pm_saved_route, ICEMT(ice, ROUTE_PSDOUT03));
+
        if (ice->ac97)
                snd_ac97_resume(ice->ac97);