* [Patch]: Minor fixes for CS4231 on SBus
@ 2007-06-27 21:08 Georg Chini
0 siblings, 0 replies; 3+ messages in thread
From: Georg Chini @ 2007-06-27 21:08 UTC (permalink / raw)
To: sparclinux
[-- Attachment #1: Type: text/plain, Size: 218 bytes --]
Hello,
remove unnecessary sbus_dma_reset function and
change sbus_dma_enable to avoid occasional system
crashes when stopping recording. Patch is against
2.6.22-rc5. Tested on my ultra2.
Regards
Georg
[-- Attachment #2: cs4231-2.6.22-rc5.diff --]
[-- Type: text/plain, Size: 3921 bytes --]
CS4231 SBus: Remove unnecessary sbus_dma_reset function and change
sbus_dma_enable to avoid occasional system crashes when
stopping recording.
signed off: Georg Chini <georg.chini@triaton-webhosting.com>
--- linux-2.6.22-rc5/sound/sparc/cs4231.c 2007-06-17 04:09:12.000000000 +0200
+++ linux-2.6.22-rc5.changed/sound/sparc/cs4231.c 2007-06-18 22:00:04.000000000 +0200
@@ -74,7 +74,6 @@
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)(struct snd_cs4231 *chip);
void (*preallocate)(struct snd_cs4231 *chip, struct snd_pcm *pcm);
#ifdef EBUS_SUPPORT
struct ebus_dma_info ebus_info;
@@ -1214,10 +1213,6 @@
spin_lock_irqsave(&chip->lock, flags);
-
- /* 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));
mb();
@@ -1861,14 +1856,13 @@
if (!on) {
sbus_writel(0, base->regs + base->dir + APCNC);
sbus_writel(0, base->regs + base->dir + APCNVA);
- sbus_writel(0, base->regs + base->dir + APCC);
- sbus_writel(0, base->regs + base->dir + APCVA);
+ if ( base->dir == APC_PLAY ) {
+ sbus_writel(0, base->regs + base->dir + APCC);
+ sbus_writel(0, base->regs + base->dir + APCVA);
+ }
- /* ACK any APC interrupts. */
- csr = sbus_readl(base->regs + APCCSR);
- sbus_writel(csr, base->regs + APCCSR);
+ udelay(1200);
}
- udelay(1000);
csr = sbus_readl(base->regs + APCCSR);
shift = 0;
if ( base->dir == APC_PLAY )
@@ -1894,23 +1888,6 @@
return sbus_readl(base->regs + base->dir + APCVA);
}
-static void sbus_dma_reset(struct snd_cs4231 *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);
-}
-
static void sbus_dma_preallocate(struct snd_cs4231 *chip, struct snd_pcm *pcm)
{
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_SBUS,
@@ -1986,14 +1963,12 @@
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,
@@ -2087,11 +2062,6 @@
return ebus_dma_addr(&dma_cont->ebus_info);
}
-static void _ebus_dma_reset(struct snd_cs4231 *chip)
-{
- return;
-}
-
static void _ebus_dma_preallocate(struct snd_cs4231 *chip, struct snd_pcm *pcm)
{
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
@@ -2171,14 +2141,12 @@
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);
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Patch]: Minor fixes for CS4231 on SBus
@ 2007-07-31 20:18 Georg Chini
0 siblings, 0 replies; 3+ messages in thread
From: Georg Chini @ 2007-07-31 20:18 UTC (permalink / raw)
To: sparclinux
[-- Attachment #1: Type: text/plain, Size: 251 bytes --]
Hello,
remove unnecessary sbus_dma_reset function and
change sbus_dma_enable to avoid occasional system
crashes when stopping recording. Patch is against
2.6.22-rc5 but applies cleanly to 2.6.23-rc1.
Tested on my ultra2.
Regards
Georg
[-- Attachment #2: cs4231-2.6.22-rc5.diff --]
[-- Type: text/plain, Size: 3921 bytes --]
CS4231 SBus: Remove unnecessary sbus_dma_reset function and change
sbus_dma_enable to avoid occasional system crashes when
stopping recording.
signed off: Georg Chini <georg.chini@triaton-webhosting.com>
--- linux-2.6.22-rc5/sound/sparc/cs4231.c 2007-06-17 04:09:12.000000000 +0200
+++ linux-2.6.22-rc5.changed/sound/sparc/cs4231.c 2007-06-18 22:00:04.000000000 +0200
@@ -74,7 +74,6 @@
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)(struct snd_cs4231 *chip);
void (*preallocate)(struct snd_cs4231 *chip, struct snd_pcm *pcm);
#ifdef EBUS_SUPPORT
struct ebus_dma_info ebus_info;
@@ -1214,10 +1213,6 @@
spin_lock_irqsave(&chip->lock, flags);
-
- /* 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));
mb();
@@ -1861,14 +1856,13 @@
if (!on) {
sbus_writel(0, base->regs + base->dir + APCNC);
sbus_writel(0, base->regs + base->dir + APCNVA);
- sbus_writel(0, base->regs + base->dir + APCC);
- sbus_writel(0, base->regs + base->dir + APCVA);
+ if ( base->dir == APC_PLAY ) {
+ sbus_writel(0, base->regs + base->dir + APCC);
+ sbus_writel(0, base->regs + base->dir + APCVA);
+ }
- /* ACK any APC interrupts. */
- csr = sbus_readl(base->regs + APCCSR);
- sbus_writel(csr, base->regs + APCCSR);
+ udelay(1200);
}
- udelay(1000);
csr = sbus_readl(base->regs + APCCSR);
shift = 0;
if ( base->dir == APC_PLAY )
@@ -1894,23 +1888,6 @@
return sbus_readl(base->regs + base->dir + APCVA);
}
-static void sbus_dma_reset(struct snd_cs4231 *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);
-}
-
static void sbus_dma_preallocate(struct snd_cs4231 *chip, struct snd_pcm *pcm)
{
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_SBUS,
@@ -1986,14 +1963,12 @@
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,
@@ -2087,11 +2062,6 @@
return ebus_dma_addr(&dma_cont->ebus_info);
}
-static void _ebus_dma_reset(struct snd_cs4231 *chip)
-{
- return;
-}
-
static void _ebus_dma_preallocate(struct snd_cs4231 *chip, struct snd_pcm *pcm)
{
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
@@ -2171,14 +2141,12 @@
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);
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Patch]: Minor fixes for CS4231 on SBus
@ 2007-08-02 4:56 David Miller
0 siblings, 0 replies; 3+ messages in thread
From: David Miller @ 2007-08-02 4:56 UTC (permalink / raw)
To: sparclinux
From: Georg Chini <georg.chini@triaton-webhosting.com>
Date: Tue, 31 Jul 2007 22:18:43 +0200
> Hello,
>
> remove unnecessary sbus_dma_reset function and
> change sbus_dma_enable to avoid occasional system
> crashes when stopping recording. Patch is against
> 2.6.22-rc5 but applies cleanly to 2.6.23-rc1.
> Tested on my ultra2.
Patch applied, thanks.
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2007-08-02 4:56 UTC | newest]
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2007-06-27 21:08 [Patch]: Minor fixes for CS4231 on SBus Georg Chini
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