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ASoC: Intel: Use readq to read 64 bit registers 

In order to fix issue described in:
"ASoC: Intel: sst: ipc command timeout"
https://patchwork.kernel.org/patch/11482829/

use readq function, which is meant to read 64 bit values from registers.
On 32 bit platforms it falls back to two readl calls.

Reported-by: Brent Lu <brent.lu@intel.com>
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Tested-by: Brent Lu <brent.lu@intel.com>
Acked-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20200507133405.32251-2-amadeuszx.slawinski@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Amadeusz Sławiński 2020-05-07 09:34:05 -04:00 committed by Mark Brown
parent 6a5d6fd332
commit 6c47660e3c
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 3 additions and 6 deletions
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9
sound/soc/intel/common/sst-dsp.c
View File

@ -10,7 +10,7 @@
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/io-64-nonatomic-lo-hi.h>
#include <linux/delay.h>
#include "sst-dsp.h"
@ -34,16 +34,13 @@ EXPORT_SYMBOL_GPL(sst_shim32_read);
void sst_shim32_write64(void __iomem *addr, u32 offset, u64 value)
{
memcpy_toio(addr + offset, &value, sizeof(value));
writeq(value, addr + offset);
}
EXPORT_SYMBOL_GPL(sst_shim32_write64);
u64 sst_shim32_read64(void __iomem *addr, u32 offset)
{
u64 val;
memcpy_fromio(&val, addr + offset, sizeof(val));
return val;
return readq(addr + offset);
}
EXPORT_SYMBOL_GPL(sst_shim32_read64);