[ALSA] Minor clean up and fixes for CS5535 audio driver

Modules: Documentation,CS5535 driver

Minor clean up and fixes for CS5535 audio driver.
Added an entry in ALSA-Configuration.txt, too.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

4 files changed, 48 insertions, 60 deletions

diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index 2f27f391c7cc..23d1870d522f 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -410,6 +410,13 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 
     The power-management is supported.
     
+  Module snd-cs5535audio
+  ----------------------
+
+    Module for multifunction CS5535 companion PCI device
+
+    Module supports up to 8 cards.
+
   Module snd-dt019x
   -----------------
 
diff --git a/sound/pci/cs5535audio/cs5535audio.c b/sound/pci/cs5535audio/cs5535audio.c
index 920c857fc223..3f4379da4d26 100644
--- a/sound/pci/cs5535audio/cs5535audio.c
+++ b/sound/pci/cs5535audio/cs5535audio.c
@@ -55,7 +55,7 @@ MODULE_DEVICE_TABLE(pci, snd_cs5535audio_ids);
 
 static void wait_till_cmd_acked(cs5535audio_t *cs5535au, unsigned long timeout)
 {
-        unsigned long tmp;
+        unsigned int tmp;
         do {
                 tmp = cs_readl(cs5535au, ACC_CODEC_CNTL);
                 if (!(tmp & CMD_NEW))
@@ -69,11 +69,11 @@ static void wait_till_cmd_acked(cs5535audio_t *cs5535au, unsigned long timeout)
 static unsigned short snd_cs5535audio_codec_read(cs5535audio_t *cs5535au,
                                                         unsigned short reg)
 {
-        unsigned long regdata;
-        unsigned long timeout;
-        unsigned long val;
+        unsigned int regdata;
+        int timeout;
+        unsigned int val;
 
-        regdata = ((unsigned long) reg) << 24;
+        regdata = ((unsigned int) reg) << 24;
         regdata |= ACC_CODEC_CNTL_RD_CMD;
         regdata |= CMD_NEW;
 
@@ -83,24 +83,23 @@ static unsigned short snd_cs5535audio_codec_read(cs5535audio_t *cs5535au,
         timeout = 50;
         do {
                 val = cs_readl(cs5535au, ACC_CODEC_STATUS);
-                if (    (val & STS_NEW) &&
-                        ((unsigned long) reg == ((0xFF000000 & val)>>24)) )
+                if ((val & STS_NEW) && reg == (val >> 24))
                         break;
                 msleep(10);
         } while (--timeout);
         if (!timeout)
                 snd_printk(KERN_ERR "Failure reading cs5535 codec\n");
 
-        return ((unsigned short) val);
+        return (unsigned short) val;
 }
 
 static void snd_cs5535audio_codec_write(cs5535audio_t *cs5535au,
                                    unsigned short reg, unsigned short val)
 {
-        unsigned long regdata;
+        unsigned int regdata;
 
-        regdata = ((unsigned long) reg) << 24;
-        regdata |= (unsigned long) val;
+        regdata = ((unsigned int) reg) << 24;
+        regdata |= val;
         regdata &= CMD_MASK;
         regdata |= CMD_NEW;
         regdata &= ACC_CODEC_CNTL_WR_CMD;
@@ -123,12 +122,6 @@ static unsigned short snd_cs5535audio_ac97_codec_read(ac97_t *ac97,
         return snd_cs5535audio_codec_read(cs5535au, reg);
 }
 
-static void snd_cs5535audio_mixer_free_ac97(ac97_t *ac97)
-{
-        cs5535audio_t *cs5535audio = ac97->private_data;
-        cs5535audio->ac97 = NULL;
-}
-
 static int snd_cs5535audio_mixer(cs5535audio_t *cs5535au)
 {
         snd_card_t *card = cs5535au->card;
@@ -147,10 +140,9 @@ static int snd_cs5535audio_mixer(cs5535audio_t *cs5535au)
         ac97.scaps = AC97_SCAP_AUDIO|AC97_SCAP_SKIP_MODEM;
         ac97.private_data = cs5535au;
         ac97.pci = cs5535au->pci;
-        ac97.private_free = snd_cs5535audio_mixer_free_ac97;
 
         if ((err = snd_ac97_mixer(pbus, &ac97, &cs5535au->ac97)) < 0) {
-                snd_printk("mixer failed\n");
+                snd_printk(KERN_ERR "mixer failed\n");
                 return err;
         }
 
@@ -201,8 +193,8 @@ static irqreturn_t snd_cs5535audio_interrupt(int irq, void *dev_id,
 
         if (!acc_irq_stat)
                 return IRQ_NONE;
-        for (count=0; count < 10; count++) {
-                if (acc_irq_stat & (1<<count)) {
+        for (count = 0; count < 10; count++) {
+                if (acc_irq_stat & (1 << count)) {
                         switch (count) {
                         case IRQ_STS:
                                 cs_readl(cs5535au, ACC_GPIO_STATUS);
diff --git a/sound/pci/cs5535audio/cs5535audio.h b/sound/pci/cs5535audio/cs5535audio.h
index e28177fb0991..774185e026d4 100644
--- a/sound/pci/cs5535audio/cs5535audio.h
+++ b/sound/pci/cs5535audio/cs5535audio.h
@@ -1,11 +1,11 @@
 #ifndef __SOUND_CS5535AUDIO_H
 #define __SOUND_CS5535AUDIO_H
 
-#define cs_writel(cs5535au, reg, val) outl(val, (int) cs5535au->port + reg)
-#define cs_writeb(cs5535au, reg, val) outb(val, (int) cs5535au->port + reg)
-#define cs_readl(cs5535au, reg) inl((unsigned short) (cs5535au->port + reg))
-#define cs_readw(cs5535au, reg) inw((unsigned short) (cs5535au->port + reg))
-#define cs_readb(cs5535au, reg) inb((unsigned short) (cs5535au->port + reg))
+#define cs_writel(cs5535au, reg, val)   outl(val, (cs5535au)->port + reg)
+#define cs_writeb(cs5535au, reg, val)   outb(val, (cs5535au)->port + reg)
+#define cs_readl(cs5535au, reg)         inl((cs5535au)->port + reg)
+#define cs_readw(cs5535au, reg)         inw((cs5535au)->port + reg)
+#define cs_readb(cs5535au, reg)         inb((cs5535au)->port + reg)
 
 #define CS5535AUDIO_MAX_DESCRIPTORS     128
 
diff --git a/sound/pci/cs5535audio/cs5535audio_pcm.c b/sound/pci/cs5535audio/cs5535audio_pcm.c
index 5802ed9d57be..d32b23f202cd 100644
--- a/sound/pci/cs5535audio/cs5535audio_pcm.c
+++ b/sound/pci/cs5535audio/cs5535audio_pcm.c
@@ -150,8 +150,8 @@ static int cs5535audio_build_dma_packets(cs5535audio_t *cs5535au,
                 cs5535audio_dma_desc_t *desc =
                         &((cs5535audio_dma_desc_t *) dma->desc_buf.area)[i];
                 desc->addr = cpu_to_le32(addr);
-                desc->size = period_bytes;
-                desc->ctlreserved = PRD_EOP;
+                desc->size = cpu_to_le32(period_bytes);
+                desc->ctlreserved = cpu_to_le32(PRD_EOP);
                 desc_addr += sizeof(cs5535audio_dma_desc_t);
                 addr += period_bytes;
         }
@@ -159,7 +159,7 @@ static int cs5535audio_build_dma_packets(cs5535audio_t *cs5535au,
         lastdesc = &((cs5535audio_dma_desc_t *) dma->desc_buf.area)[periods];
         lastdesc->addr = cpu_to_le32((u32) dma->desc_buf.addr);
         lastdesc->size = 0;
-        lastdesc->ctlreserved = PRD_JMP;
+        lastdesc->ctlreserved = cpu_to_le32(PRD_JMP);
         jmpprd_addr = cpu_to_le32(lastdesc->addr +
                                 (sizeof(cs5535audio_dma_desc_t)*periods));
 
@@ -272,34 +272,29 @@ static int snd_cs5535audio_trigger(snd_pcm_substream_t *substream, int cmd)
 {
         cs5535audio_t *cs5535au = snd_pcm_substream_chip(substream);
         cs5535audio_dma_t *dma = substream->runtime->private_data;
+        int err = 0;
 
+        spin_lock(&cs5535au->reg_lock);
         switch (cmd) {
-                case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
-                        spin_lock_irq(&cs5535au->reg_lock);
-                        dma->ops->pause_dma(cs5535au);
-                        spin_unlock_irq(&cs5535au->reg_lock);
-                        break;
-                case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
-                        spin_lock_irq(&cs5535au->reg_lock);
-                        dma->ops->enable_dma(cs5535au);
-                        spin_unlock_irq(&cs5535au->reg_lock);
-                        break;
-                case SNDRV_PCM_TRIGGER_START:
-                        spin_lock_irq(&cs5535au->reg_lock);
-                        dma->ops->enable_dma(cs5535au);
-                        spin_unlock_irq(&cs5535au->reg_lock);
-                        break;
-                case SNDRV_PCM_TRIGGER_STOP:
-                        spin_lock_irq(&cs5535au->reg_lock);
-                        dma->ops->disable_dma(cs5535au);
-                        spin_unlock_irq(&cs5535au->reg_lock);
-                        break;
-                default:
-                        snd_printk(KERN_ERR "unhandled trigger\n");
-                        return -EINVAL;
-                        break;
+        case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+                dma->ops->pause_dma(cs5535au);
+                break;
+        case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+                dma->ops->enable_dma(cs5535au);
+                break;
+        case SNDRV_PCM_TRIGGER_START:
+                dma->ops->enable_dma(cs5535au);
+                break;
+        case SNDRV_PCM_TRIGGER_STOP:
+                dma->ops->disable_dma(cs5535au);
+                break;
+        default:
+                snd_printk(KERN_ERR "unhandled trigger\n");
+                err = -EINVAL;
+                break;
         }
-        return 0;
+        spin_unlock(&cs5535au->reg_lock);
+        return err;
 }
 
 static snd_pcm_uframes_t snd_cs5535audio_pcm_pointer(snd_pcm_substream_t
@@ -375,11 +370,6 @@ static snd_pcm_ops_t snd_cs5535audio_capture_ops = {
         .pointer =      snd_cs5535audio_pcm_pointer,
 };
 
-static void snd_cs5535audio_pcm_free(snd_pcm_t *pcm)
-{
-        snd_pcm_lib_preallocate_free_for_all(pcm);
-}
-
 static cs5535audio_dma_ops_t snd_cs5535audio_playback_dma_ops = {
         .type = CS5535AUDIO_DMA_PLAYBACK,
         .enable_dma = cs5535audio_playback_enable_dma,
@@ -417,7 +407,6 @@ int __devinit snd_cs5535audio_pcm(cs5535audio_t *cs5535au)
                                         &snd_cs5535audio_capture_ops);
 
         pcm->private_data = cs5535au;
-        pcm->private_free = snd_cs5535audio_pcm_free;
         pcm->info_flags = 0;
         strcpy(pcm->name, "CS5535 Audio");