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[ALSA] snd-ca0106: Fix SPI driver code. Fixes speaker output. 

Modules: CA0106 driver

Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
This commit is contained in:
James Courtier-Dutton 2005-12-21 22:26:26 +01:00 committed by Jaroslav Kysela
parent 18f3c59f2b
commit aad9095322
1 changed files with 57 additions and 15 deletions
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72
sound/pci/ca0106/ca0106_main.c
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@ -284,17 +284,35 @@ void snd_ca0106_ptr_write(struct snd_ca0106 *emu,
spin_unlock_irqrestore(&emu->emu_lock, flags); spin_unlock_irqrestore(&emu->emu_lock, flags);
} }
int snd_ca0106_spi_write(struct snd_ca0106 *emu, int snd_ca0106_spi_write(struct snd_ca0106 * emu,
u32 value) unsigned int data)
{ {
snd_ca0106_ptr_write(emu, SPI, 0, value); unsigned int reset, set;
return 0; unsigned int reg, tmp;
} int n, result;
reg = SPI;
int snd_ca0106_spi_read(struct snd_ca0106 *emu, if (data > 0xffff) /* Only 16bit values allowed */
u32 *value) return 1;
{ tmp = snd_ca0106_ptr_read(emu, reg, 0);
*value = snd_ca0106_ptr_read(emu, SPI, 0); reset = (tmp & ~0x3ffff) | 0x20000; /* Set xxx20000 */
set = reset | 0x10000; /* Set xxx1xxxx */
snd_ca0106_ptr_write(emu, reg, 0, reset | data);
tmp = snd_ca0106_ptr_read(emu, reg, 0); /* write post */
snd_ca0106_ptr_write(emu, reg, 0, set | data);
result = 1;
/* Wait for status bit to return to 0 */
for (n = 0; n < 100; n++) {
udelay(10);
tmp = snd_ca0106_ptr_read(emu, reg, 0);
if (!(tmp & 0x10000)) {
result = 0;
break;
}
}
if (result) /* Timed out */
return 1;
snd_ca0106_ptr_write(emu, reg, 0, reset | data);
tmp = snd_ca0106_ptr_read(emu, reg, 0); /* Write post */
return 0; return 0;
} }
@ -1148,6 +1166,30 @@ static int __devinit snd_ca0106_pcm(struct snd_ca0106 *emu, int device, struct s
return 0; return 0;
} }
static unsigned int spi_dac_init[] = {
0x00ff,
0x02ff,
0x0400,
0x0520,
0x0600,
0x08ff,
0x0aff,
0x0cff,
0x0eff,
0x10ff,
0x1200,
0x1400,
0x1480,
0x1800,
0x1aff,
0x1cff,
0x1e00,
0x0530,
0x0602,
0x0622,
0x1400,
};
static int __devinit snd_ca0106_create(struct snd_card *card, static int __devinit snd_ca0106_create(struct snd_card *card,
struct pci_dev *pci, struct pci_dev *pci,
struct snd_ca0106 **rchip) struct snd_ca0106 **rchip)
@ -1330,11 +1372,11 @@ static int __devinit snd_ca0106_create(struct snd_card *card,
snd_ca0106_i2c_write(chip, ADC_MUX, ADC_MUX_LINEIN); /* Enable Line-in capture. MIC in currently untested. */ snd_ca0106_i2c_write(chip, ADC_MUX, ADC_MUX_LINEIN); /* Enable Line-in capture. MIC in currently untested. */
} }
if (chip->details->spi_dac == 1) { /* The SB0570 use SPI to control DAC. */ if (chip->details->spi_dac == 1) { /* The SB0570 use SPI to control DAC. */
u32 tmp; int size, n;
snd_ca0106_spi_write(chip, 0xf0622); /* Enable speakers output. */
snd_ca0106_spi_read(chip, &tmp); /* Read the value. */ size = ARRAY_SIZE(spi_dac_init);
snd_ca0106_spi_write(chip, 0xe1400); for (n=0; n < size; n++)
snd_ca0106_spi_read(chip, &tmp); /* Read the value. */ snd_ca0106_spi_write(chip, spi_dac_init[n]);
} }
if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,