ALSA: snd-opti9xx: Implement suspend/resume

Implement suspend/resume support for Opti 92x and 93x chips.
Tested with Opti 929A+AD1848 and Opti 931.

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

1 files changed, 63 insertions, 4 deletions

diff --git a/sound/isa/opti9xx/opti92x-ad1848.c b/sound/isa/opti9xx/opti92x-ad1848.c
index ecc68dfe7b54..d7ce0125dcf2 100644
--- a/sound/isa/opti9xx/opti92x-ad1848.c
+++ b/sound/isa/opti9xx/opti92x-ad1848.c
@@ -136,8 +136,8 @@ struct snd_opti9xx {
 #ifdef OPTi93X
         unsigned long mc_indir_index;
         struct resource *res_mc_indir;
-        struct snd_wss *codec;
 #endif  /* OPTi93X */
+        struct snd_wss *codec;
         unsigned long pwd_reg;
 
         spinlock_t lock;
@@ -870,9 +870,7 @@ static int __devinit snd_opti9xx_probe(struct snd_card *card)
                                &codec);
         if (error < 0)
                 return error;
-#ifdef OPTi93X
         chip->codec = codec;
-#endif
         error = snd_wss_pcm(codec, 0, &pcm);
         if (error < 0)
                 return error;
@@ -1053,11 +1051,55 @@ static int __devexit snd_opti9xx_isa_remove(struct device *devptr,
         return 0;
 }
 
+#ifdef CONFIG_PM
+static int snd_opti9xx_suspend(struct snd_card *card)
+{
+        struct snd_opti9xx *chip = card->private_data;
+
+        snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
+        chip->codec->suspend(chip->codec);
+        return 0;
+}
+
+static int snd_opti9xx_resume(struct snd_card *card)
+{
+        struct snd_opti9xx *chip = card->private_data;
+        int error, xdma2;
+#if defined(CS4231) || defined(OPTi93X)
+        xdma2 = dma2;
+#else
+        xdma2 = -1;
+#endif
+
+        error = snd_opti9xx_configure(chip, port, irq, dma1, xdma2,
+                                      mpu_port, mpu_irq);
+        if (error)
+                return error;
+        chip->codec->resume(chip->codec);
+        snd_power_change_state(card, SNDRV_CTL_POWER_D0);
+        return 0;
+}
+
+static int snd_opti9xx_isa_suspend(struct device *dev, unsigned int n,
+                                   pm_message_t state)
+{
+        return snd_opti9xx_suspend(dev_get_drvdata(dev));
+}
+
+static int snd_opti9xx_isa_resume(struct device *dev, unsigned int n)
+{
+        return snd_opti9xx_resume(dev_get_drvdata(dev));
+}
+#endif
+
 static struct isa_driver snd_opti9xx_driver = {
         .match          = snd_opti9xx_isa_match,
         .probe          = snd_opti9xx_isa_probe,
         .remove         = __devexit_p(snd_opti9xx_isa_remove),
-        /* FIXME: suspend/resume */
+#ifdef CONFIG_PM
+        .suspend        = snd_opti9xx_isa_suspend,
+        .resume         = snd_opti9xx_isa_resume,
+#endif
         .driver         = {
                 .name   = DEV_NAME
         },
@@ -1123,12 +1165,29 @@ static void __devexit snd_opti9xx_pnp_remove(struct pnp_card_link * pcard)
         snd_opti9xx_pnp_is_probed = 0;
 }
 
+#ifdef CONFIG_PM
+static int snd_opti9xx_pnp_suspend(struct pnp_card_link *pcard,
+                                   pm_message_t state)
+{
+        return snd_opti9xx_suspend(pnp_get_card_drvdata(pcard));
+}
+
+static int snd_opti9xx_pnp_resume(struct pnp_card_link *pcard)
+{
+        return snd_opti9xx_resume(pnp_get_card_drvdata(pcard));
+}
+#endif
+
 static struct pnp_card_driver opti9xx_pnpc_driver = {
         .flags          = PNP_DRIVER_RES_DISABLE,
         .name           = "opti9xx",
         .id_table       = snd_opti9xx_pnpids,
         .probe          = snd_opti9xx_pnp_probe,
         .remove         = __devexit_p(snd_opti9xx_pnp_remove),
+#ifdef CONFIG_PM
+        .suspend        = snd_opti9xx_pnp_suspend,
+        .resume         = snd_opti9xx_pnp_resume,
+#endif
 };
 #endif