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ALSA: ice1712: Use bitrev8 

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Akinobu Mita 2009-11-13 16:02:56 +09:00 committed by Takashi Iwai
parent 0d26ce3403
commit 401de8184a
2 changed files with 3 additions and 13 deletions
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15
sound/i2c/cs8427.c
View File

@ -23,6 +23,7 @@
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/bitrev.h>
#include <asm/unaligned.h>
#include <sound/core.h>
#include <sound/control.h>
@ -55,18 +56,6 @@ struct cs8427 {
struct cs8427_stream capture;
};
static unsigned char swapbits(unsigned char val)
{
int bit;
unsigned char res = 0;
for (bit = 0; bit < 8; bit++) {
res <<= 1;
res |= val & 1;
val >>= 1;
}
return res;
}
int snd_cs8427_reg_write(struct snd_i2c_device *device, unsigned char reg,
unsigned char val)
{
@ -149,7 +138,7 @@ static int snd_cs8427_send_corudata(struct snd_i2c_device *device,
}
data[0] = CS8427_REG_AUTOINC | CS8427_REG_CORU_DATABUF;
for (idx = 0; idx < count; idx++)
data[idx + 1] = swapbits(ndata[idx]);
data[idx + 1] = bitrev8(ndata[idx]);
if (snd_i2c_sendbytes(device, data, count + 1) != count + 1)
return -EIO;
return 1;

1
sound/pci/Kconfig
View File

@ -570,6 +570,7 @@ config SND_ICE1712
tristate "ICEnsemble ICE1712 (Envy24)"
select SND_MPU401_UART
select SND_AC97_CODEC
select BITREVERSE
help
Say Y here to include support for soundcards based on the
ICE1712 (Envy24) chip.