ALSA: cs46xx - Fix suspend/resume with new DSP

Fix the basic suspend/resume of snd-cs46xx drivers with new DSP.

References:
	https://bugzilla.redhat.com/show_bug.cgi?id=498287
	https://bugzilla.redhat.com/show_bug.cgi?id=160751

Tested-by: Florian Zumbiehl <florz@florz.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

5 files changed, 62 insertions, 25 deletions

diff --git a/include/sound/cs46xx_dsp_spos.h b/include/sound/cs46xx_dsp_spos.h
index 7c44667e79a..49b03c9e5e5 100644
--- a/include/sound/cs46xx_dsp_spos.h
+++ b/include/sound/cs46xx_dsp_spos.h
@@ -118,9 +118,11 @@ struct dsp_scb_descriptor {
 
         struct snd_info_entry *proc_info;
         int ref_count;
-        spinlock_t lock;
 
-        int deleted;
+        u16 volume[2];
+        unsigned int deleted :1;
+        unsigned int updated :1;
+        unsigned int volume_set :1;
 };
 
 struct dsp_task_descriptor {
diff --git a/sound/pci/cs46xx/cs46xx_lib.c b/sound/pci/cs46xx/cs46xx_lib.c
index 1be96ead424..e6b4a879ae2 100644
--- a/sound/pci/cs46xx/cs46xx_lib.c
+++ b/sound/pci/cs46xx/cs46xx_lib.c
@@ -3597,7 +3597,7 @@ static struct cs_card_type __devinitdata cards[] = {
 #ifdef CONFIG_PM
 static unsigned int saved_regs[] = {
         BA0_ACOSV,
-        BA0_ASER_FADDR,
+        /*BA0_ASER_FADDR,*/
         BA0_ASER_MASTER,
         BA1_PVOL,
         BA1_CVOL,
diff --git a/sound/pci/cs46xx/dsp_spos.c b/sound/pci/cs46xx/dsp_spos.c
index f4f0c8f5dad..3e5ca8fb519 100644
--- a/sound/pci/cs46xx/dsp_spos.c
+++ b/sound/pci/cs46xx/dsp_spos.c
@@ -298,6 +298,9 @@ void  cs46xx_dsp_spos_destroy (struct snd_cs46xx * chip)
                 if (ins->scbs[i].deleted) continue;
 
                 cs46xx_dsp_proc_free_scb_desc ( (ins->scbs + i) );
+#ifdef CONFIG_PM
+                kfree(ins->scbs[i].data);
+#endif
         }
 
         kfree(ins->code.data);
@@ -974,13 +977,11 @@ static struct dsp_scb_descriptor * _map_scb (struct snd_cs46xx *chip, char * nam
 
         index = find_free_scb_index (ins);
 
+        memset(&ins->scbs[index], 0, sizeof(ins->scbs[index]));
         strcpy(ins->scbs[index].scb_name, name);
         ins->scbs[index].address = dest;
         ins->scbs[index].index = index;
-        ins->scbs[index].proc_info = NULL;
         ins->scbs[index].ref_count = 1;
-        ins->scbs[index].deleted = 0;
-        spin_lock_init(&ins->scbs[index].lock);
 
         desc = (ins->scbs + index);
         ins->scbs[index].scb_symbol = add_symbol (chip, name, dest, SYMBOL_PARAMETER);
@@ -1022,17 +1023,29 @@ _map_task_tree (struct snd_cs46xx *chip, char * name, u32 dest, u32 size)
         return desc;
 }
 
+#define SCB_BYTES       (0x10 * 4)
+
 struct dsp_scb_descriptor *
 cs46xx_dsp_create_scb (struct snd_cs46xx *chip, char * name, u32 * scb_data, u32 dest)
 {
         struct dsp_scb_descriptor * desc;
 
+#ifdef CONFIG_PM
+        /* copy the data for resume */
+        scb_data = kmemdup(scb_data, SCB_BYTES, GFP_KERNEL);
+        if (!scb_data)
+                return NULL;
+#endif
+
         desc = _map_scb (chip,name,dest);
         if (desc) {
                 desc->data = scb_data;
                 _dsp_create_scb(chip,scb_data,dest);
         } else {
                 snd_printk(KERN_ERR "dsp_spos: failed to map SCB\n");
+#ifdef CONFIG_PM
+                kfree(scb_data);
+#endif
         }
 
         return desc;
@@ -1988,7 +2001,28 @@ int cs46xx_dsp_resume(struct snd_cs46xx * chip)
                         continue;
                 _dsp_create_scb(chip, s->data, s->address);
         }
-
+        for (i = 0; i < ins->nscb; i++) {
+                struct dsp_scb_descriptor *s = &ins->scbs[i];
+                if (s->deleted)
+                        continue;
+                if (s->updated)
+                        cs46xx_dsp_spos_update_scb(chip, s);
+                if (s->volume_set)
+                        cs46xx_dsp_scb_set_volume(chip, s,
+                                                  s->volume[0], s->volume[1]);
+        }
+        if (ins->spdif_status_out & DSP_SPDIF_STATUS_HW_ENABLED) {
+                cs46xx_dsp_enable_spdif_hw(chip);
+                snd_cs46xx_poke(chip, (ins->ref_snoop_scb->address + 2) << 2,
+                                (OUTPUT_SNOOP_BUFFER + 0x10) << 0x10);
+                if (ins->spdif_status_out & DSP_SPDIF_STATUS_PLAYBACK_OPEN)
+                        cs46xx_poke_via_dsp(chip, SP_SPDOUT_CSUV,
+                                            ins->spdif_csuv_stream);
+        }
+        if (chip->dsp_spos_instance->spdif_status_in) {
+                cs46xx_poke_via_dsp(chip, SP_ASER_COUNTDOWN, 0x80000005);
+                cs46xx_poke_via_dsp(chip, SP_SPDIN_CONTROL, 0x800003ff);
+        }
         return 0;
 }
 #endif
diff --git a/sound/pci/cs46xx/dsp_spos.h b/sound/pci/cs46xx/dsp_spos.h
index f9e169d33c0..ca47a8114c7 100644
--- a/sound/pci/cs46xx/dsp_spos.h
+++ b/sound/pci/cs46xx/dsp_spos.h
@@ -212,6 +212,7 @@ static inline void cs46xx_dsp_spos_update_scb (struct snd_cs46xx * chip,
                         (scb->address + SCBsubListPtr) << 2,
                         (scb->sub_list_ptr->address << 0x10) |
                         (scb->next_scb_ptr->address));  
+        scb->updated = 1;
 }
 
 static inline void cs46xx_dsp_scb_set_volume (struct snd_cs46xx * chip,
@@ -222,6 +223,9 @@ static inline void cs46xx_dsp_scb_set_volume (struct snd_cs46xx * chip,
 
         snd_cs46xx_poke(chip, (scb->address + SCBVolumeCtrl) << 2, val);
         snd_cs46xx_poke(chip, (scb->address + SCBVolumeCtrl + 1) << 2, val);
+        scb->volume_set = 1;
+        scb->volume[0] = left;
+        scb->volume[1] = right;
 }
 #endif /* __DSP_SPOS_H__ */
 #endif /* CONFIG_SND_CS46XX_NEW_DSP  */
diff --git a/sound/pci/cs46xx/dsp_spos_scb_lib.c b/sound/pci/cs46xx/dsp_spos_scb_lib.c
index dd7c41b037b..00b148a1023 100644
--- a/sound/pci/cs46xx/dsp_spos_scb_lib.c
+++ b/sound/pci/cs46xx/dsp_spos_scb_lib.c
@@ -115,7 +115,6 @@ static void cs46xx_dsp_proc_scb_info_read (struct snd_info_entry *entry,
 static void _dsp_unlink_scb (struct snd_cs46xx *chip, struct dsp_scb_descriptor * scb)
 {
         struct dsp_spos_instance * ins = chip->dsp_spos_instance;
-        unsigned long flags;
 
         if ( scb->parent_scb_ptr ) {
                 /* unlink parent SCB */
@@ -153,8 +152,6 @@ static void _dsp_unlink_scb (struct snd_cs46xx *chip, struct dsp_scb_descriptor
                         scb->next_scb_ptr = ins->the_null_scb;
                 }
 
-                spin_lock_irqsave(&chip->reg_lock, flags);    
-
                 /* update parent first entry in DSP RAM */
                 cs46xx_dsp_spos_update_scb(chip,scb->parent_scb_ptr);
 
@@ -162,7 +159,6 @@ static void _dsp_unlink_scb (struct snd_cs46xx *chip, struct dsp_scb_descriptor
                 cs46xx_dsp_spos_update_scb(chip,scb);
 
                 scb->parent_scb_ptr = NULL;
-                spin_unlock_irqrestore(&chip->reg_lock, flags);
         }
 }
 
@@ -197,9 +193,9 @@ void cs46xx_dsp_remove_scb (struct snd_cs46xx *chip, struct dsp_scb_descriptor *
                 goto _end;
 #endif
 
-        spin_lock_irqsave(&scb->lock, flags);
+        spin_lock_irqsave(&chip->reg_lock, flags);    
         _dsp_unlink_scb (chip,scb);
-        spin_unlock_irqrestore(&scb->lock, flags);
+        spin_unlock_irqrestore(&chip->reg_lock, flags);
 
         cs46xx_dsp_proc_free_scb_desc(scb);
         if (snd_BUG_ON(!scb->scb_symbol))
@@ -207,6 +203,10 @@ void cs46xx_dsp_remove_scb (struct snd_cs46xx *chip, struct dsp_scb_descriptor *
         remove_symbol (chip,scb->scb_symbol);
 
         ins->scbs[scb->index].deleted = 1;
+#ifdef CONFIG_PM
+        kfree(ins->scbs[scb->index].data);
+        ins->scbs[scb->index].data = NULL;
+#endif
 
         if (scb->index < ins->scb_highest_frag_index)
                 ins->scb_highest_frag_index = scb->index;
@@ -1508,20 +1508,17 @@ int cs46xx_dsp_pcm_unlink (struct snd_cs46xx * chip,
                        chip->dsp_spos_instance->npcm_channels <= 0))
                 return -EIO;
 
-        spin_lock(&pcm_channel->src_scb->lock);
-
+        spin_lock_irqsave(&chip->reg_lock, flags);
         if (pcm_channel->unlinked) {
-                spin_unlock(&pcm_channel->src_scb->lock);
+                spin_unlock_irqrestore(&chip->reg_lock, flags);
                 return -EIO;
         }
 
-        spin_lock_irqsave(&chip->reg_lock, flags);
         pcm_channel->unlinked = 1;
-        spin_unlock_irqrestore(&chip->reg_lock, flags);
 
         _dsp_unlink_scb (chip,pcm_channel->pcm_reader_scb);
+        spin_unlock_irqrestore(&chip->reg_lock, flags);
 
-        spin_unlock(&pcm_channel->src_scb->lock);
         return 0;
 }
 
@@ -1533,10 +1530,10 @@ int cs46xx_dsp_pcm_link (struct snd_cs46xx * chip,
         struct dsp_scb_descriptor * src_scb = pcm_channel->src_scb;
         unsigned long flags;
 
-        spin_lock(&pcm_channel->src_scb->lock);
+        spin_lock_irqsave(&chip->reg_lock, flags);
 
         if (pcm_channel->unlinked == 0) {
-                spin_unlock(&pcm_channel->src_scb->lock);
+                spin_unlock_irqrestore(&chip->reg_lock, flags);
                 return -EIO;
         }
 
@@ -1552,8 +1549,6 @@ int cs46xx_dsp_pcm_link (struct snd_cs46xx * chip,
         snd_BUG_ON(pcm_channel->pcm_reader_scb->parent_scb_ptr);
         pcm_channel->pcm_reader_scb->parent_scb_ptr = parent_scb;
 
-        spin_lock_irqsave(&chip->reg_lock, flags);
-
         /* update SCB entry in DSP RAM */
         cs46xx_dsp_spos_update_scb(chip,pcm_channel->pcm_reader_scb);
 
@@ -1562,8 +1557,6 @@ int cs46xx_dsp_pcm_link (struct snd_cs46xx * chip,
 
         pcm_channel->unlinked = 0;
         spin_unlock_irqrestore(&chip->reg_lock, flags);
-
-        spin_unlock(&pcm_channel->src_scb->lock);
         return 0;
 }
 
@@ -1596,13 +1589,17 @@ cs46xx_add_record_source (struct snd_cs46xx *chip, struct dsp_scb_descriptor * s
 
 int cs46xx_src_unlink(struct snd_cs46xx *chip, struct dsp_scb_descriptor * src)
 {
+        unsigned long flags;
+
         if (snd_BUG_ON(!src->parent_scb_ptr))
                 return -EINVAL;
 
         /* mute SCB */
         cs46xx_dsp_scb_set_volume (chip,src,0,0);
 
+        spin_lock_irqsave(&chip->reg_lock, flags);
         _dsp_unlink_scb (chip,src);
+        spin_unlock_irqrestore(&chip->reg_lock, flags);
 
         return 0;
 }