[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>

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
   -----------------
 

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);

sound/pci/cs5535audio/cs5535audio.h

 #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
 

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;
+		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");