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[ALSA] emu10k1: Add Audio capture support for Audigy 2 ZS Notebook.

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Implement functionallity in order to fixe ALSA bug#2058.

Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
This commit is contained in:
James Courtier-Dutton
2006-12-06 15:58:02 +00:00
committed by Jaroslav Kysela
parent 9ed1261e3e
commit 184c1e2c4c
5 changed files with 373 additions and 7 deletions
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59
sound/pci/emu10k1/io.c
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@@ -30,6 +30,7 @@
#include <sound/core.h>
#include <sound/emu10k1.h>
#include <linux/delay.h>
#include "p17v.h"
unsigned int snd_emu10k1_ptr_read(struct snd_emu10k1 * emu, unsigned int reg, unsigned int chn)
{
@@ -167,6 +168,64 @@ int snd_emu10k1_spi_write(struct snd_emu10k1 * emu,
return 0;
}
/* The ADC does not support i2c read, so only write is implemented */
int snd_emu10k1_i2c_write(struct snd_emu10k1 *emu,
u32 reg,
u32 value)
{
u32 tmp;
int timeout = 0;
int status;
int retry;
if ((reg > 0x7f) || (value > 0x1ff)) {
snd_printk(KERN_ERR "i2c_write: invalid values.\n");
return -EINVAL;
}
tmp = reg << 25 | value << 16;
// snd_printk("I2C-write:reg=0x%x, value=0x%x\n", reg, value);
/* Not sure what this I2C channel controls. */
/* snd_emu10k1_ptr_write(emu, P17V_I2C_0, 0, tmp); */
/* This controls the I2C connected to the WM8775 ADC Codec */
snd_emu10k1_ptr20_write(emu, P17V_I2C_1, 0, tmp);
tmp = snd_emu10k1_ptr20_read(emu, P17V_I2C_1, 0); /* write post */
for (retry = 0; retry < 10; retry++) {
/* Send the data to i2c */
//tmp = snd_emu10k1_ptr_read(emu, P17V_I2C_ADDR, 0);
//tmp = tmp & ~(I2C_A_ADC_READ|I2C_A_ADC_LAST|I2C_A_ADC_START|I2C_A_ADC_ADD_MASK);
tmp = 0;
tmp = tmp | (I2C_A_ADC_LAST|I2C_A_ADC_START|I2C_A_ADC_ADD);
snd_emu10k1_ptr20_write(emu, P17V_I2C_ADDR, 0, tmp);
/* Wait till the transaction ends */
while (1) {
udelay(10);
status = snd_emu10k1_ptr20_read(emu, P17V_I2C_ADDR, 0);
// snd_printk("I2C:status=0x%x\n", status);
timeout++;
if ((status & I2C_A_ADC_START) == 0)
break;
if (timeout > 1000) {
snd_printk("emu10k1:I2C:timeout status=0x%x\n", status);
break;
}
}
//Read back and see if the transaction is successful
if ((status & I2C_A_ADC_ABORT) == 0)
break;
}
if (retry == 10) {
snd_printk(KERN_ERR "Writing to ADC failed!\n");
return -EINVAL;
}
return 0;
}
int snd_emu1010_fpga_write(struct snd_emu10k1 * emu, int reg, int value)
{
if (reg < 0 || reg > 0x3f)