diff options
| author | James Courtier-Dutton <James@superbug.co.uk> | 2005-12-21 22:26:26 +0100 |
|---|---|---|
| committer | Jaroslav Kysela <perex@suse.cz> | 2006-01-03 12:31:08 +0100 |
| commit | aad9095322c0c7d9637f29b71167458c36a4cdf6 (patch) | |
| tree | f321047c62f3583a3a3990db6a8d165682b454d8 /sound/pci/ca0106 | |
| parent | 18f3c59f2b14225bd23c41a87a5eec39439bc8b9 (diff) | |
[ALSA] snd-ca0106: Fix SPI driver code. Fixes speaker output.
Modules: CA0106 driver
Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
Diffstat (limited to 'sound/pci/ca0106')
| -rw-r--r-- | sound/pci/ca0106/ca0106_main.c | 72 |
1 files changed, 57 insertions, 15 deletions
diff --git a/sound/pci/ca0106/ca0106_main.c b/sound/pci/ca0106/ca0106_main.c index 1cf6f1fa98b..6ed7c0bfa09 100644 --- a/sound/pci/ca0106/ca0106_main.c +++ b/sound/pci/ca0106/ca0106_main.c @@ -284,20 +284,38 @@ void snd_ca0106_ptr_write(struct snd_ca0106 *emu, spin_unlock_irqrestore(&emu->emu_lock, flags); } -int snd_ca0106_spi_write(struct snd_ca0106 *emu, - u32 value) +int snd_ca0106_spi_write(struct snd_ca0106 * emu, + unsigned int data) { - snd_ca0106_ptr_write(emu, SPI, 0, value); + unsigned int reset, set; + unsigned int reg, tmp; + int n, result; + reg = SPI; + if (data > 0xffff) /* Only 16bit values allowed */ + return 1; + tmp = snd_ca0106_ptr_read(emu, reg, 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; } -int snd_ca0106_spi_read(struct snd_ca0106 *emu, - u32 *value) -{ - *value = snd_ca0106_ptr_read(emu, SPI, 0); - return 0; -} - int snd_ca0106_i2c_write(struct snd_ca0106 *emu, u32 reg, u32 value) @@ -1148,6 +1166,30 @@ static int __devinit snd_ca0106_pcm(struct snd_ca0106 *emu, int device, struct s 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, struct pci_dev *pci, 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. */ } if (chip->details->spi_dac == 1) { /* The SB0570 use SPI to control DAC. */ - u32 tmp; - snd_ca0106_spi_write(chip, 0xf0622); /* Enable speakers output. */ - snd_ca0106_spi_read(chip, &tmp); /* Read the value. */ - snd_ca0106_spi_write(chip, 0xe1400); - snd_ca0106_spi_read(chip, &tmp); /* Read the value. */ + int size, n; + + size = ARRAY_SIZE(spi_dac_init); + for (n=0; n < size; n++) + snd_ca0106_spi_write(chip, spi_dac_init[n]); } if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, |