1 files changed, 62 insertions, 15 deletions

diff --git a/sound/pci/cs46xx/cs46xx_lib.c b/sound/pci/cs46xx/cs46xx_lib.c
index bef1f6d1859c..71d7aab9d869 100644
--- a/sound/pci/cs46xx/cs46xx_lib.c
+++ b/sound/pci/cs46xx/cs46xx_lib.c
@@ -2897,6 +2897,10 @@ static int snd_cs46xx_free(struct snd_cs46xx *chip)
         }
 #endif
         
+#ifdef CONFIG_PM
+        kfree(chip->saved_regs);
+#endif
+
         pci_disable_device(chip->pci);
         kfree(chip);
         return 0;
@@ -3140,6 +3144,23 @@ static int snd_cs46xx_chip_init(struct snd_cs46xx *chip)
 /*
  *  start and load DSP 
  */
+
+static void cs46xx_enable_stream_irqs(struct snd_cs46xx *chip)
+{
+        unsigned int tmp;
+
+        snd_cs46xx_pokeBA0(chip, BA0_HICR, HICR_IEV | HICR_CHGM);
+        
+        tmp = snd_cs46xx_peek(chip, BA1_PFIE);
+        tmp &= ~0x0000f03f;
+        snd_cs46xx_poke(chip, BA1_PFIE, tmp);   /* playback interrupt enable */
+
+        tmp = snd_cs46xx_peek(chip, BA1_CIE);
+        tmp &= ~0x0000003f;
+        tmp |=  0x00000001;
+        snd_cs46xx_poke(chip, BA1_CIE, tmp);    /* capture interrupt enable */
+}
+
 int __devinit snd_cs46xx_start_dsp(struct snd_cs46xx *chip)
 {       
         unsigned int tmp;
@@ -3214,19 +3235,7 @@ int __devinit snd_cs46xx_start_dsp(struct snd_cs46xx *chip)
 
         snd_cs46xx_proc_start(chip);
 
-        /*
-         *  Enable interrupts on the part.
-         */
-        snd_cs46xx_pokeBA0(chip, BA0_HICR, HICR_IEV | HICR_CHGM);
-        
-        tmp = snd_cs46xx_peek(chip, BA1_PFIE);
-        tmp &= ~0x0000f03f;
-        snd_cs46xx_poke(chip, BA1_PFIE, tmp);   /* playback interrupt enable */
-
-        tmp = snd_cs46xx_peek(chip, BA1_CIE);
-        tmp &= ~0x0000003f;
-        tmp |=  0x00000001;
-        snd_cs46xx_poke(chip, BA1_CIE, tmp);    /* capture interrupt enable */
+        cs46xx_enable_stream_irqs(chip);
         
 #ifndef CONFIG_SND_CS46XX_NEW_DSP
         /* set the attenuation to 0dB */ 
@@ -3665,11 +3674,19 @@ static struct cs_card_type __devinitdata cards[] = {
  * APM support
  */
 #ifdef CONFIG_PM
+static unsigned int saved_regs[] = {
+        BA0_ACOSV,
+        BA0_ASER_FADDR,
+        BA0_ASER_MASTER,
+        BA1_PVOL,
+        BA1_CVOL,
+};
+
 int snd_cs46xx_suspend(struct pci_dev *pci, pm_message_t state)
 {
         struct snd_card *card = pci_get_drvdata(pci);
         struct snd_cs46xx *chip = card->private_data;
-        int amp_saved;
+        int i, amp_saved;
 
         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
         chip->in_suspend = 1;
@@ -3680,6 +3697,10 @@ int snd_cs46xx_suspend(struct pci_dev *pci, pm_message_t state)
         snd_ac97_suspend(chip->ac97[CS46XX_PRIMARY_CODEC_INDEX]);
         snd_ac97_suspend(chip->ac97[CS46XX_SECONDARY_CODEC_INDEX]);
 
+        /* save some registers */
+        for (i = 0; i < ARRAY_SIZE(saved_regs); i++)
+                chip->saved_regs[i] = snd_cs46xx_peekBA0(chip, saved_regs[i]);
+
         amp_saved = chip->amplifier;
         /* turn off amp */
         chip->amplifier_ctrl(chip, -chip->amplifier);
@@ -3698,7 +3719,7 @@ int snd_cs46xx_resume(struct pci_dev *pci)
 {
         struct snd_card *card = pci_get_drvdata(pci);
         struct snd_cs46xx *chip = card->private_data;
-        int amp_saved;
+        int i, amp_saved;
 
         pci_set_power_state(pci, PCI_D0);
         pci_restore_state(pci);
@@ -3716,6 +3737,16 @@ int snd_cs46xx_resume(struct pci_dev *pci)
 
         snd_cs46xx_chip_init(chip);
 
+        snd_cs46xx_reset(chip);
+#ifdef CONFIG_SND_CS46XX_NEW_DSP
+        cs46xx_dsp_resume(chip);
+        /* restore some registers */
+        for (i = 0; i < ARRAY_SIZE(saved_regs); i++)
+                snd_cs46xx_pokeBA0(chip, saved_regs[i], chip->saved_regs[i]);
+#else
+        snd_cs46xx_download_image(chip);
+#endif
+
 #if 0
         snd_cs46xx_codec_write(chip, BA0_AC97_GENERAL_PURPOSE, 
                                chip->ac97_general_purpose);
@@ -3730,6 +3761,13 @@ int snd_cs46xx_resume(struct pci_dev *pci)
         snd_ac97_resume(chip->ac97[CS46XX_PRIMARY_CODEC_INDEX]);
         snd_ac97_resume(chip->ac97[CS46XX_SECONDARY_CODEC_INDEX]);
 
+        /* reset playback/capture */
+        snd_cs46xx_set_play_sample_rate(chip, 8000);
+        snd_cs46xx_set_capture_sample_rate(chip, 8000);
+        snd_cs46xx_proc_start(chip);
+
+        cs46xx_enable_stream_irqs(chip);
+
         if (amp_saved)
                 chip->amplifier_ctrl(chip, 1); /* turn amp on */
         else
@@ -3896,6 +3934,15 @@ int __devinit snd_cs46xx_create(struct snd_card *card,
         
         snd_cs46xx_proc_init(card, chip);
 
+#ifdef CONFIG_PM
+        chip->saved_regs = kmalloc(sizeof(*chip->saved_regs) *
+                                   ARRAY_SIZE(saved_regs), GFP_KERNEL);
+        if (!chip->saved_regs) {
+                snd_cs46xx_free(chip);
+                return -ENOMEM;
+        }
+#endif
+
         chip->active_ctrl(chip, -1); /* disable CLKRUN */
 
         snd_card_set_dev(card, &pci->dev);