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authorGeorg Chini <georg.chini@triaton-webhosting.com>2005-11-07 14:09:19 -0800
committerDavid S. Miller <davem@davemloft.net>2005-11-07 14:09:19 -0800
commitb128254fdb172eaa3273de24fa6ce405a1f534c9 (patch)
tree3b099bf16fafe78c5fca7b01933bb02353c60aa4 /sound
parentdedeb0029b9c83420fc1337d4ee53daa7b2a0ad4 (diff)
[SPARC]: More abstractions and cleanups of dma handling in cs4231.
From: Georg Chini <georg.chini@triaton-webhosting.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'sound')
-rw-r--r--sound/sparc/cs4231.c683
1 files changed, 342 insertions, 341 deletions
diff --git a/sound/sparc/cs4231.c b/sound/sparc/cs4231.c
index 110d64d4848..1f8d27a6152 100644
--- a/sound/sparc/cs4231.c
+++ b/sound/sparc/cs4231.c
@@ -62,25 +62,36 @@ MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Sun,CS4231}}");
#ifdef SBUS_SUPPORT
-struct sbus_dma_info {
+typedef struct sbus_dma_info {
spinlock_t lock;
int dir;
void __iomem *regs;
-};
+} sbus_dma_info_t;
#endif
-typedef struct snd_cs4231 {
- spinlock_t lock;
- void __iomem *port;
+typedef struct snd_cs4231 cs4231_t;
+
+typedef struct cs4231_dma_control {
+ void (*prepare)(struct cs4231_dma_control *dma_cont, int dir);
+ void (*enable)(struct cs4231_dma_control *dma_cont, int on);
+ int (*request)(struct cs4231_dma_control *dma_cont, dma_addr_t bus_addr, size_t len);
+ unsigned int (*address)(struct cs4231_dma_control *dma_cont);
+ void (*reset)(cs4231_t *chip);
+ void (*preallocate)(cs4231_t *chip, snd_pcm_t *pcm);
#ifdef EBUS_SUPPORT
- struct ebus_dma_info eb2c;
- struct ebus_dma_info eb2p;
+ struct ebus_dma_info ebus_info;
#endif
-
#ifdef SBUS_SUPPORT
- struct sbus_dma_info sb2c;
- struct sbus_dma_info sb2p;
+ struct sbus_dma_info sbus_info;
#endif
+} cs4231_dma_control_t;
+
+struct snd_cs4231 {
+ spinlock_t lock;
+ void __iomem *port;
+
+ cs4231_dma_control_t p_dma;
+ cs4231_dma_control_t c_dma;
u32 flags;
#define CS4231_FLAG_EBUS 0x00000001
@@ -119,7 +130,7 @@ typedef struct snd_cs4231 {
unsigned int irq[2];
unsigned int regs_size;
struct snd_cs4231 *next;
-} cs4231_t;
+};
static cs4231_t *cs4231_list;
@@ -494,103 +505,6 @@ static unsigned char snd_cs4231_in(cs4231_t *chip, unsigned char reg)
}
/*
- * SBUS DMA routines
- */
-#ifdef SBUS_SUPPORT
-
-int sbus_dma_request(struct sbus_dma_info *base, dma_addr_t bus_addr, size_t len)
-{
- unsigned long flags;
- u32 test, csr;
- int err;
-
- if (len >= (1 << 24))
- return -EINVAL;
- spin_lock_irqsave(&base->lock, flags);
- csr = sbus_readl(base->regs + APCCSR);
- err = -EINVAL;
- test = APC_CDMA_READY;
- if ( base->dir == APC_PLAY )
- test = APC_PDMA_READY;
- if (!(csr & test))
- goto out;
- err = -EBUSY;
- csr = sbus_readl(base->regs + APCCSR);
- test = APC_XINT_CNVA;
- if ( base->dir == APC_PLAY )
- test = APC_XINT_PNVA;
- if (!(csr & test))
- goto out;
- err = 0;
- sbus_writel(bus_addr, base->regs + base->dir + APCNVA);
- sbus_writel(len, base->regs + base->dir + APCNC);
-out:
- spin_unlock_irqrestore(&base->lock, flags);
- return err;
-}
-
-void sbus_dma_prepare(struct sbus_dma_info *base)
-{
- unsigned long flags;
- u32 csr, test;
-
- spin_lock_irqsave(&base->lock, flags);
- csr = sbus_readl(base->regs + APCCSR);
- test = APC_GENL_INT | APC_PLAY_INT | APC_XINT_ENA |
- APC_XINT_PLAY | APC_XINT_PEMP | APC_XINT_GENL |
- APC_XINT_PENA;
- if ( base->dir == APC_RECORD )
- test = APC_GENL_INT | APC_CAPT_INT | APC_XINT_ENA |
- APC_XINT_CAPT | APC_XINT_CEMP | APC_XINT_GENL;
- csr |= test;
- sbus_writel(csr, base->regs + APCCSR);
- spin_unlock_irqrestore(&base->lock, flags);
-}
-
-void sbus_dma_enable(struct sbus_dma_info *base, int on)
-{
- unsigned long flags;
- u32 csr, shift;
-
- spin_lock_irqsave(&base->lock, flags);
- if (!on) {
- if (base->dir == APC_PLAY) {
- sbus_writel(0, base->regs + base->dir + APCNVA);
- sbus_writel(1, base->regs + base->dir + APCC);
- }
- else
- {
- sbus_writel(0, base->regs + base->dir + APCNC);
- sbus_writel(0, base->regs + base->dir + APCVA);
- }
- }
- udelay(500);
- csr = sbus_readl(base->regs + APCCSR);
- shift = 0;
- if ( base->dir == APC_PLAY )
- shift = 1;
- if (on)
- csr &= ~(APC_CPAUSE << shift);
- else
- csr |= (APC_CPAUSE << shift);
- sbus_writel(csr, base->regs + APCCSR);
- if (on)
- csr |= (APC_CDMA_READY << shift);
- else
- csr &= ~(APC_CDMA_READY << shift);
- sbus_writel(csr, base->regs + APCCSR);
-
- spin_unlock_irqrestore(&base->lock, flags);
-}
-
-unsigned int sbus_dma_addr(struct sbus_dma_info *base)
-{
- return sbus_readl(base->regs + base->dir + APCVA);
-}
-
-#endif
-
-/*
* CS4231 detection / MCE routines
*/
@@ -688,8 +602,7 @@ static void snd_cs4231_mce_down(cs4231_t *chip)
spin_unlock_irqrestore(&chip->lock, flags);
}
-#ifdef EBUS_SUPPORT
-static void snd_cs4231_ebus_advance_dma(struct ebus_dma_info *p, snd_pcm_substream_t *substream, unsigned int *periods_sent)
+static void snd_cs4231_advance_dma(struct cs4231_dma_control *dma_cont, snd_pcm_substream_t *substream, unsigned int *periods_sent)
{
snd_pcm_runtime_t *runtime = substream->runtime;
@@ -700,89 +613,41 @@ static void snd_cs4231_ebus_advance_dma(struct ebus_dma_info *p, snd_pcm_substre
if (period_size >= (1 << 24))
BUG();
- if (ebus_dma_request(p, runtime->dma_addr + offset, period_size))
+ if (dma_cont->request(dma_cont, runtime->dma_addr + offset, period_size))
return;
(*periods_sent) = ((*periods_sent) + 1) % runtime->periods;
}
}
-#endif
-
-#ifdef SBUS_SUPPORT
-static void snd_cs4231_sbus_advance_dma(struct sbus_dma_info *p, snd_pcm_substream_t *substream, unsigned int *periods_sent)
-{
- snd_pcm_runtime_t *runtime = substream->runtime;
-
- while (1) {
- unsigned int period_size = snd_pcm_lib_period_bytes(substream);
- unsigned int offset = period_size * (*periods_sent);
-
- if (period_size > 0xffff + 1)
- BUG();
-
- if (sbus_dma_request(p, runtime->dma_addr + offset, period_size))
- return;
- (*periods_sent) = (*periods_sent + 1) % runtime->periods;
- }
-}
-#endif
static void cs4231_dma_trigger(snd_pcm_substream_t *substream, unsigned int what, int on)
{
cs4231_t *chip = snd_pcm_substream_chip(substream);
+ cs4231_dma_control_t *dma_cont;
-#ifdef EBUS_SUPPORT
- if (chip->flags & CS4231_FLAG_EBUS) {
- if (what & CS4231_PLAYBACK_ENABLE) {
- if (on) {
- ebus_dma_prepare(&chip->eb2p, 0);
- ebus_dma_enable(&chip->eb2p, 1);
- snd_cs4231_ebus_advance_dma(&chip->eb2p,
- chip->playback_substream,
- &chip->p_periods_sent);
- } else {
- ebus_dma_enable(&chip->eb2p, 0);
- }
- }
- if (what & CS4231_RECORD_ENABLE) {
- if (on) {
- ebus_dma_prepare(&chip->eb2c, 1);
- ebus_dma_enable(&chip->eb2c, 1);
- snd_cs4231_ebus_advance_dma(&chip->eb2c,
- chip->capture_substream,
- &chip->c_periods_sent);
- } else {
- ebus_dma_enable(&chip->eb2c, 0);
- }
- }
- } else {
-#endif
-#ifdef SBUS_SUPPORT
if (what & CS4231_PLAYBACK_ENABLE) {
+ dma_cont = &chip->p_dma;
if (on) {
- sbus_dma_prepare(&chip->sb2p);
- sbus_dma_enable(&chip->sb2p, 1);
- snd_cs4231_sbus_advance_dma(&chip->sb2p,
+ dma_cont->prepare(dma_cont, 0);
+ dma_cont->enable(dma_cont, 1);
+ snd_cs4231_advance_dma(dma_cont,
chip->playback_substream,
&chip->p_periods_sent);
} else {
- sbus_dma_enable(&chip->sb2p, 0);
+ dma_cont->enable(dma_cont, 0);
}
}
if (what & CS4231_RECORD_ENABLE) {
+ dma_cont = &chip->c_dma;
if (on) {
- sbus_dma_prepare(&chip->sb2c);
- sbus_dma_enable(&chip->sb2c, 1);
- snd_cs4231_sbus_advance_dma(&chip->sb2c,
+ dma_cont->prepare(dma_cont, 1);
+ dma_cont->enable(dma_cont, 1);
+ snd_cs4231_advance_dma(dma_cont,
chip->capture_substream,
&chip->c_periods_sent);
} else {
- sbus_dma_enable(&chip->sb2c, 0);
+ dma_cont->enable(dma_cont, 0);
}
}
-#endif
-#ifdef EBUS_SUPPORT
- }
-#endif
}
static int snd_cs4231_trigger(snd_pcm_substream_t *substream, int cmd)
@@ -1273,140 +1138,55 @@ static void snd_cs4231_overrange(cs4231_t *chip)
chip->capture_substream->runtime->overrange++;
}
-#ifdef SBUS_SUPPORT
-static irqreturn_t snd_cs4231_sbus_interrupt(int irq, void *dev_id, struct pt_regs *regs)
-{
- unsigned long flags;
- unsigned char status;
- u32 csr;
- cs4231_t *chip = dev_id;
-
- /*This is IRQ is not raised by the cs4231*/
- if (!(__cs4231_readb(chip, CS4231P(chip, STATUS)) & CS4231_GLOBALIRQ))
- return IRQ_NONE;
-
- /* ACK the APC interrupt. */
- csr = sbus_readl(chip->port + APCCSR);
-
- sbus_writel(csr, chip->port + APCCSR);
-
- if ((chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE) &&
- (csr & APC_PLAY_INT) &&
- (csr & APC_XINT_PNVA) &&
- !(csr & APC_XINT_EMPT)) {
- snd_pcm_period_elapsed(chip->playback_substream);
- snd_cs4231_sbus_advance_dma(&chip->sb2p, chip->playback_substream,
- &chip->p_periods_sent);
- }
-
- if ((chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) &&
- (csr & APC_CAPT_INT) &&
- (csr & APC_XINT_CNVA) &&
- !(csr & APC_XINT_EMPT)) {
- snd_pcm_period_elapsed(chip->capture_substream);
- snd_cs4231_sbus_advance_dma(&chip->sb2c,chip->capture_substream,
- &chip->c_periods_sent);
- }
-
- status = snd_cs4231_in(chip, CS4231_IRQ_STATUS);
-
- if (status & CS4231_TIMER_IRQ) {
- if (chip->timer)
- snd_timer_interrupt(chip->timer, chip->timer->sticks);
- }
-
- if (status & CS4231_RECORD_IRQ)
- snd_cs4231_overrange(chip);
-
- /* ACK the CS4231 interrupt. */
- spin_lock_irqsave(&chip->lock, flags);
- snd_cs4231_outm(chip, CS4231_IRQ_STATUS, ~CS4231_ALL_IRQS | ~status, 0);
- spin_unlock_irqrestore(&chip->lock, flags);
-
- return 0;
-}
-#endif
-
-#ifdef EBUS_SUPPORT
-static void snd_cs4231_ebus_play_callback(struct ebus_dma_info *p, int event, void *cookie)
+static void snd_cs4231_play_callback(cs4231_t *cookie)
{
cs4231_t *chip = cookie;
if (chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE) {
snd_pcm_period_elapsed(chip->playback_substream);
- snd_cs4231_ebus_advance_dma(p, chip->playback_substream,
+ snd_cs4231_advance_dma(&chip->p_dma, chip->playback_substream,
&chip->p_periods_sent);
}
}
-static void snd_cs4231_ebus_capture_callback(struct ebus_dma_info *p, int event, void *cookie)
+static void snd_cs4231_capture_callback(cs4231_t *cookie)
{
cs4231_t *chip = cookie;
if (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) {
snd_pcm_period_elapsed(chip->capture_substream);
- snd_cs4231_ebus_advance_dma(p, chip->capture_substream,
+ snd_cs4231_advance_dma(&chip->c_dma, chip->capture_substream,
&chip->c_periods_sent);
}
}
-#endif
static snd_pcm_uframes_t snd_cs4231_playback_pointer(snd_pcm_substream_t *substream)
{
cs4231_t *chip = snd_pcm_substream_chip(substream);
+ cs4231_dma_control_t *dma_cont = &chip->p_dma;
size_t ptr;
-#ifdef EBUS_SUPPORT
- size_t residue, period_bytes;
-#endif
if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
return 0;
-#ifdef EBUS_SUPPORT
- period_bytes = snd_pcm_lib_period_bytes(substream);
- ptr = period_bytes * chip->p_periods_sent;
- if (chip->flags & CS4231_FLAG_EBUS) {
- residue = ebus_dma_residue(&chip->eb2p);
- ptr += period_bytes - residue;
- } else {
-#endif
-#ifdef SBUS_SUPPORT
- ptr = sbus_dma_addr(&chip->sb2p);
- if (ptr != 0)
- ptr -= substream->runtime->dma_addr;
-#endif
-#ifdef EBUS_SUPPORT
- }
-#endif
-
+ ptr = dma_cont->address(dma_cont);
+ if (ptr != 0)
+ ptr -= substream->runtime->dma_addr;
+
return bytes_to_frames(substream->runtime, ptr);
}
static snd_pcm_uframes_t snd_cs4231_capture_pointer(snd_pcm_substream_t * substream)
{
cs4231_t *chip = snd_pcm_substream_chip(substream);
+ cs4231_dma_control_t *dma_cont = &chip->c_dma;
size_t ptr;
-#ifdef EBUS_SUPPORT
- size_t residue, period_bytes;
-#endif
if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
return 0;
-#ifdef EBUS_SUPPORT
- period_bytes = snd_pcm_lib_period_bytes(substream);
- ptr = period_bytes * chip->c_periods_sent;
- if (chip->flags & CS4231_FLAG_EBUS) {
- residue = ebus_dma_residue(&chip->eb2c);
- ptr += period_bytes - residue;
- } else {
-#endif
-#ifdef SBUS_SUPPORT
- ptr = sbus_dma_addr(&chip->sb2c);
- if (ptr != 0)
- ptr -= substream->runtime->dma_addr;
-#endif
-#ifdef EBUS_SUPPORT
- }
-#endif
+ ptr = dma_cont->address(dma_cont);
+ if (ptr != 0)
+ ptr -= substream->runtime->dma_addr;
+
return bytes_to_frames(substream->runtime, ptr);
}
@@ -1442,30 +1222,8 @@ static int snd_cs4231_probe(cs4231_t *chip)
spin_lock_irqsave(&chip->lock, flags);
- /* Reset DMA engine. */
-#ifdef EBUS_SUPPORT
- if (chip->flags & CS4231_FLAG_EBUS) {
- /* Done by ebus_dma_register */
- } else {
-#endif
-#ifdef SBUS_SUPPORT
- sbus_writel(APC_CHIP_RESET, chip->port + APCCSR);
- sbus_writel(0x00, chip->port + APCCSR);
- sbus_writel(sbus_readl(chip->port + APCCSR) | APC_CDC_RESET,
- chip->port + APCCSR);
-
- udelay(20);
-
- sbus_writel(sbus_readl(chip->port + APCCSR) & ~APC_CDC_RESET,
- chip->port + APCCSR);
- sbus_writel(sbus_readl(chip->port + APCCSR) | (APC_XINT_ENA |
- APC_XINT_PENA |
- APC_XINT_CENA),
- chip->port + APCCSR);
-#endif
-#ifdef EBUS_SUPPORT
- }
-#endif
+ /* Reset DMA engine (sbus only). */
+ chip->p_dma.reset(chip);
__cs4231_readb(chip, CS4231P(chip, STATUS)); /* clear any pendings IRQ */
__cs4231_writeb(chip, 0, CS4231P(chip, STATUS));
@@ -1585,8 +1343,8 @@ static int snd_cs4231_playback_close(snd_pcm_substream_t *substream)
{
cs4231_t *chip = snd_pcm_substream_chip(substream);
- chip->playback_substream = NULL;
snd_cs4231_close(chip, CS4231_MODE_PLAY);
+ chip->playback_substream = NULL;
return 0;
}
@@ -1595,8 +1353,8 @@ static int snd_cs4231_capture_close(snd_pcm_substream_t *substream)
{
cs4231_t *chip = snd_pcm_substream_chip(substream);
- chip->capture_substream = NULL;
snd_cs4231_close(chip, CS4231_MODE_RECORD);
+ chip->capture_substream = NULL;
return 0;
}
@@ -1651,21 +1409,7 @@ int snd_cs4231_pcm(cs4231_t *chip)
pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
strcpy(pcm->name, "CS4231");
-#ifdef EBUS_SUPPORT
- if (chip->flags & CS4231_FLAG_EBUS) {
- snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
- snd_dma_pci_data(chip->dev_u.pdev),
- 64*1024, 128*1024);
- } else {
-#endif
-#ifdef SBUS_SUPPORT
- snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_SBUS,
- snd_dma_sbus_data(chip->dev_u.sdev),
- 64*1024, 128*1024);
-#endif
-#ifdef EBUS_SUPPORT
- }
-#endif
+ chip->p_dma.preallocate(chip, pcm);
chip->pcm = pcm;
@@ -2022,6 +1766,180 @@ out_err:
}
#ifdef SBUS_SUPPORT
+
+static irqreturn_t snd_cs4231_sbus_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ unsigned long flags;
+ unsigned char status;
+ u32 csr;
+ cs4231_t *chip = dev_id;
+
+ /*This is IRQ is not raised by the cs4231*/
+ if (!(__cs4231_readb(chip, CS4231P(chip, STATUS)) & CS4231_GLOBALIRQ))
+ return IRQ_NONE;
+
+ /* ACK the APC interrupt. */
+ csr = sbus_readl(chip->port + APCCSR);
+
+ sbus_writel(csr, chip->port + APCCSR);
+
+ if ((csr & APC_PDMA_READY) &&
+ (csr & APC_PLAY_INT) &&
+ (csr & APC_XINT_PNVA) &&
+ !(csr & APC_XINT_EMPT))
+ snd_cs4231_play_callback(chip);
+
+ if ((csr & APC_CDMA_READY) &&
+ (csr & APC_CAPT_INT) &&
+ (csr & APC_XINT_CNVA) &&
+ !(csr & APC_XINT_EMPT))
+ snd_cs4231_capture_callback(chip);
+
+ status = snd_cs4231_in(chip, CS4231_IRQ_STATUS);
+
+ if (status & CS4231_TIMER_IRQ) {
+ if (chip->timer)
+ snd_timer_interrupt(chip->timer, chip->timer->sticks);
+ }
+
+ if ((status & CS4231_RECORD_IRQ) && (csr & APC_CDMA_READY))
+ snd_cs4231_overrange(chip);
+
+ /* ACK the CS4231 interrupt. */
+ spin_lock_irqsave(&chip->lock, flags);
+ snd_cs4231_outm(chip, CS4231_IRQ_STATUS, ~CS4231_ALL_IRQS | ~status, 0);
+ spin_unlock_irqrestore(&chip->lock, flags);
+
+ return 0;
+}
+
+/*
+ * SBUS DMA routines
+ */
+
+int sbus_dma_request(struct cs4231_dma_control *dma_cont, dma_addr_t bus_addr, size_t len)
+{
+ unsigned long flags;
+ u32 test, csr;
+ int err;
+ sbus_dma_info_t *base = &dma_cont->sbus_info;
+
+ if (len >= (1 << 24))
+ return -EINVAL;
+ spin_lock_irqsave(&base->lock, flags);
+ csr = sbus_readl(base->regs + APCCSR);
+ err = -EINVAL;
+ test = APC_CDMA_READY;
+ if ( base->dir == APC_PLAY )
+ test = APC_PDMA_READY;
+ if (!(csr & test))
+ goto out;
+ err = -EBUSY;
+ csr = sbus_readl(base->regs + APCCSR);
+ test = APC_XINT_CNVA;
+ if ( base->dir == APC_PLAY )
+ test = APC_XINT_PNVA;
+ if (!(csr & test))
+ goto out;
+ err = 0;
+ sbus_writel(bus_addr, base->regs + base->dir + APCNVA);
+ sbus_writel(len, base->regs + base->dir + APCNC);
+out:
+ spin_unlock_irqrestore(&base->lock, flags);
+ return err;
+}
+
+void sbus_dma_prepare(struct cs4231_dma_control *dma_cont, int d)
+{
+ unsigned long flags;
+ u32 csr, test;
+ sbus_dma_info_t *base = &dma_cont->sbus_info;
+
+ spin_lock_irqsave(&base->lock, flags);
+ csr = sbus_readl(base->regs + APCCSR);
+ test = APC_GENL_INT | APC_PLAY_INT | APC_XINT_ENA |
+ APC_XINT_PLAY | APC_XINT_PEMP | APC_XINT_GENL |
+ APC_XINT_PENA;
+ if ( base->dir == APC_RECORD )
+ test = APC_GENL_INT | APC_CAPT_INT | APC_XINT_ENA |
+ APC_XINT_CAPT | APC_XINT_CEMP | APC_XINT_GENL;
+ csr |= test;
+ sbus_writel(csr, base->regs + APCCSR);
+ spin_unlock_irqrestore(&base->lock, flags);
+}
+
+void sbus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
+{
+ unsigned long flags;
+ u32 csr, shift;
+ sbus_dma_info_t *base = &dma_cont->sbus_info;
+
+ spin_lock_irqsave(&base->lock, flags);
+ if (!on) {
+ if (base->dir == APC_PLAY) {
+ sbus_writel(0, base->regs + base->dir + APCNVA);
+ sbus_writel(1, base->regs + base->dir + APCC);
+ }
+ else
+ {
+ sbus_writel(0, base->regs + base->dir + APCNC);
+ sbus_writel(0, base->regs + base->dir + APCVA);
+ }
+ }
+ udelay(600);
+ csr = sbus_readl(base->regs + APCCSR);
+ shift = 0;
+ if ( base->dir == APC_PLAY )
+ shift = 1;
+ if (on)
+ csr &= ~(APC_CPAUSE << shift);
+ else
+ csr |= (APC_CPAUSE << shift);
+ sbus_writel(csr, base->regs + APCCSR);
+ if (on)
+ csr |= (APC_CDMA_READY << shift);
+ else
+ csr &= ~(APC_CDMA_READY << shift);
+ sbus_writel(csr, base->regs + APCCSR);
+
+ spin_unlock_irqrestore(&base->lock, flags);
+}
+
+unsigned int sbus_dma_addr(struct cs4231_dma_control *dma_cont)
+{
+ sbus_dma_info_t *base = &dma_cont->sbus_info;
+
+ return sbus_readl(base->regs + base->dir + APCVA);
+}
+
+void sbus_dma_reset(cs4231_t *chip)
+{
+ sbus_writel(APC_CHIP_RESET, chip->port + APCCSR);
+ sbus_writel(0x00, chip->port + APCCSR);
+ sbus_writel(sbus_readl(chip->port + APCCSR) | APC_CDC_RESET,
+ chip->port + APCCSR);
+
+ udelay(20);
+
+ sbus_writel(sbus_readl(chip->port + APCCSR) & ~APC_CDC_RESET,
+ chip->port + APCCSR);
+ sbus_writel(sbus_readl(chip->port + APCCSR) | (APC_XINT_ENA |
+ APC_XINT_PENA |
+ APC_XINT_CENA),
+ chip->port + APCCSR);
+}
+
+void sbus_dma_preallocate(cs4231_t *chip, snd_pcm_t *pcm)
+{
+ snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_SBUS,
+ snd_dma_sbus_data(chip->dev_u.sdev),
+ 64*1024, 128*1024);
+}
+
+/*
+ * Init and exit routines
+ */
+
static int snd_cs4231_sbus_free(cs4231_t *chip)
{
if (chip->irq[0])
@@ -2063,8 +1981,8 @@ static int __init snd_cs4231_sbus_create(snd_card_t *card,
return -ENOMEM;
spin_lock_init(&chip->lock);
- spin_lock_init(&chip->sb2c.lock);
- spin_lock_init(&chip->sb2p.lock);
+ spin_lock_init(&chip->c_dma.sbus_info.lock);
+ spin_lock_init(&chip->p_dma.sbus_info.lock);
init_MUTEX(&chip->mce_mutex);
init_MUTEX(&chip->open_mutex);
chip->card = card;
@@ -2080,10 +1998,24 @@ static int __init snd_cs4231_sbus_create(snd_card_t *card,
return -EIO;
}
- chip->sb2c.regs = chip->port;
- chip->sb2p.regs = chip->port;
- chip->sb2c.dir = APC_RECORD;
- chip->sb2p.dir = APC_PLAY;
+ chip->c_dma.sbus_info.regs = chip->port;
+ chip->p_dma.sbus_info.regs = chip->port;
+ chip->c_dma.sbus_info.dir = APC_RECORD;
+ chip->p_dma.sbus_info.dir = APC_PLAY;
+
+ chip->p_dma.prepare = sbus_dma_prepare;
+ chip->p_dma.enable = sbus_dma_enable;
+ chip->p_dma.request = sbus_dma_request;
+ chip->p_dma.address = sbus_dma_addr;
+ chip->p_dma.reset = sbus_dma_reset;
+ chip->p_dma.preallocate = sbus_dma_preallocate;
+
+ chip->c_dma.prepare = sbus_dma_prepare;
+ chip->c_dma.enable = sbus_dma_enable;
+ chip->c_dma.request = sbus_dma_request;
+ chip->c_dma.address = sbus_dma_addr;
+ chip->c_dma.reset = sbus_dma_reset;
+ chip->c_dma.preallocate = sbus_dma_preallocate;
if (request_irq(sdev->irqs[0], snd_cs4231_sbus_interrupt,
SA_SHIRQ, "cs4231", chip)) {
@@ -2138,15 +2070,70 @@ static int cs4231_sbus_attach(struct sbus_dev *sdev)
#endif
#ifdef EBUS_SUPPORT
+
+static void snd_cs4231_ebus_play_callback(struct ebus_dma_info *p, int event, void *cookie)
+{
+ cs4231_t *chip = cookie;
+
+ snd_cs4231_play_callback(chip);
+}
+
+static void snd_cs4231_ebus_capture_callback(struct ebus_dma_info *p, int event, void *cookie)
+{
+ cs4231_t *chip = cookie;
+
+ snd_cs4231_capture_callback(chip);
+}
+
+/*
+ * EBUS DMA wrappers
+ */
+
+int _ebus_dma_request(struct cs4231_dma_control *dma_cont, dma_addr_t bus_addr, size_t len)
+{
+ return ebus_dma_request(&dma_cont->ebus_info, bus_addr, len);
+}
+
+void _ebus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
+{
+ ebus_dma_enable(&dma_cont->ebus_info, on);
+}
+
+void _ebus_dma_prepare(struct cs4231_dma_control *dma_cont, int dir)
+{
+ ebus_dma_prepare(&dma_cont->ebus_info, dir);
+}
+
+unsigned int _ebus_dma_addr(struct cs4231_dma_control *dma_cont)
+{
+ return ebus_dma_addr(&dma_cont->ebus_info);
+}
+
+void _ebus_dma_reset(cs4231_t *chip)
+{
+ return;
+}
+
+void _ebus_dma_preallocate(cs4231_t *chip, snd_pcm_t *pcm)
+{
+ snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
+ snd_dma_pci_data(chip->dev_u.pdev),
+ 64*1024, 128*1024);
+}
+
+/*
+ * Init and exit routines
+ */
+
static int snd_cs4231_ebus_free(cs4231_t *chip)
{
- if (chip->eb2c.regs) {
- ebus_dma_unregister(&chip->eb2c);
- iounmap(chip->eb2c.regs);
+ if (chip->c_dma.ebus_info.regs) {
+ ebus_dma_unregister(&chip->c_dma.ebus_info);
+ iounmap(chip->c_dma.ebus_info.regs);
}
- if (chip->eb2p.regs) {
- ebus_dma_unregister(&chip->eb2p);
- iounmap(chip->eb2p.regs);
+ if (chip->p_dma.ebus_info.regs) {
+ ebus_dma_unregister(&chip->p_dma.ebus_info);
+ iounmap(chip->p_dma.ebus_info.regs);
}
if (chip->port)
@@ -2184,8 +2171,8 @@ static int __init snd_cs4231_ebus_create(snd_card_t *card,
return -ENOMEM;
spin_lock_init(&chip->lock);
- spin_lock_init(&chip->eb2c.lock);
- spin_lock_init(&chip->eb2p.lock);
+ spin_lock_init(&chip->c_dma.ebus_info.lock);
+ spin_lock_init(&chip->p_dma.ebus_info.lock);
init_MUTEX(&chip->mce_mutex);
init_MUTEX(&chip->open_mutex);
chip->flags |= CS4231_FLAG_EBUS;
@@ -2193,43 +2180,57 @@ static int __init snd_cs4231_ebus_create(snd_card_t *card,
chip->dev_u.pdev = edev->bus->self;
memcpy(&chip->image, &snd_cs4231_original_image,
sizeof(snd_cs4231_original_image));
- strcpy(chip->eb2c.name, "cs4231(capture)");
- chip->eb2c.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
- chip->eb2c.callback = snd_cs4231_ebus_capture_callback;
- chip->eb2c.client_cookie = chip;
- chip->eb2c.irq = edev->irqs[0];
- strcpy(chip->eb2p.name, "cs4231(play)");
- chip->eb2p.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
- chip->eb2p.callback = snd_cs4231_ebus_play_callback;
- chip->eb2p.client_cookie = chip;
- chip->eb2p.irq = edev->irqs[1];
+ strcpy(chip->c_dma.ebus_info.name, "cs4231(capture)");
+ chip->c_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
+ chip->c_dma.ebus_info.callback = snd_cs4231_ebus_capture_callback;
+ chip->c_dma.ebus_info.client_cookie = chip;
+ chip->c_dma.ebus_info.irq = edev->irqs[0];
+ strcpy(chip->p_dma.ebus_info.name, "cs4231(play)");
+ chip->p_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
+ chip->p_dma.ebus_info.callback = snd_cs4231_ebus_play_callback;
+ chip->p_dma.ebus_info.client_cookie = chip;
+ chip->p_dma.ebus_info.irq = edev->irqs[1];
+
+ chip->p_dma.prepare = _ebus_dma_prepare;
+ chip->p_dma.enable = _ebus_dma_enable;
+ chip->p_dma.request = _ebus_dma_request;
+ chip->p_dma.address = _ebus_dma_addr;
+ chip->p_dma.reset = _ebus_dma_reset;
+ chip->p_dma.preallocate = _ebus_dma_preallocate;
+
+ chip->c_dma.prepare = _ebus_dma_prepare;
+ chip->c_dma.enable = _ebus_dma_enable;
+ chip->c_dma.request = _ebus_dma_request;
+ chip->c_dma.address = _ebus_dma_addr;
+ chip->c_dma.reset = _ebus_dma_reset;
+ chip->c_dma.preallocate = _ebus_dma_preallocate;
chip->port = ioremap(edev->resource[0].start, 0x10);
- chip->eb2p.regs = ioremap(edev->resource[1].start, 0x10);
- chip->eb2c.regs = ioremap(edev->resource[2].start, 0x10);
- if (!chip->port || !chip->eb2p.regs || !chip->eb2c.regs) {
+ chip->p_dma.ebus_info.regs = ioremap(edev->resource[1].start, 0x10);
+ chip->c_dma.ebus_info.regs = ioremap(edev->resource[2].start, 0x10);
+ if (!chip->port || !chip->p_dma.ebus_info.regs || !chip->c_dma.ebus_info.regs) {
snd_cs4231_ebus_free(chip);
snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
return -EIO;
}
- if (ebus_dma_register(&chip->eb2c)) {
+ if (ebus_dma_register(&chip->c_dma.ebus_info)) {
snd_cs4231_ebus_free(chip);
snd_printdd("cs4231-%d: Unable to register EBUS capture DMA\n", dev);
return -EBUSY;
}
- if (ebus_dma_irq_enable(&chip->eb2c, 1)) {
+ if (ebus_dma_irq_enable(&chip->c_dma.ebus_info, 1)) {
snd_cs4231_ebus_free(chip);
snd_printdd("cs4231-%d: Unable to enable EBUS capture IRQ\n", dev);
return -EBUSY;
}
- if (ebus_dma_register(&chip->eb2p)) {
+ if (ebus_dma_register(&chip->p_dma.ebus_info)) {
snd_cs4231_ebus_free(chip);
snd_printdd("cs4231-%d: Unable to register EBUS play DMA\n", dev);
return -EBUSY;
}
- if (ebus_dma_irq_enable(&chip->eb2p, 1)) {
+ if (ebus_dma_irq_enable(&chip->p_dma.ebus_info, 1)) {
snd_cs4231_ebus_free(chip);
snd_printdd("cs4231-%d: Unable to enable EBUS play IRQ\n", dev);
return -EBUSY;