void snd_aw2_saa7146_setup(struct snd_aw2_saa7146 *chip,
void __iomem *pci_base_addr)
{
/* set PCI burst/threshold
Burst length definition
VALUE BURST LENGTH
000 1 Dword
001 2 Dwords
010 4 Dwords
011 8 Dwords
100 16 Dwords
101 32 Dwords
110 64 Dwords
111 128 Dwords
Threshold definition
VALUE WRITE MODE READ MODE
00 1 Dword of valid data 1 empty Dword
01 4 Dwords of valid data 4 empty Dwords
10 8 Dwords of valid data 8 empty Dwords
11 16 Dwords of valid data 16 empty Dwords */
unsigned int acon2;
unsigned int acon1 = 0;
int i;
/* Set base addr */
chip->base_addr = pci_base_addr;
/* disable all irqs */
WRITEREG(0, IER);
/* reset saa7146 */
WRITEREG((MRST_N << 16), MC1);
/* enable audio interface */
#ifdef __BIG_ENDIAN
acon1 |= A1_SWAP;
acon1 |= A2_SWAP;
#endif
/* WS0_CTRL, WS0_SYNC: input TSL1, I2S */
/* At initialization WS1 and WS2 are disabled (configured as input) */
acon1 |= 0 * WS1_CTRL;
acon1 |= 0 * WS2_CTRL;
/* WS4 is not used. So it must not restart A2.
This is why it is configured as output (force to low) */
acon1 |= 3 * WS4_CTRL;
/* WS3_CTRL, WS3_SYNC: output TSL2, I2S */
acon1 |= 2 * WS3_CTRL;
/* A1 and A2 are active and asynchronous */
acon1 |= 3 * AUDIO_MODE;
WRITEREG(acon1, ACON1);
/* The following comes from original windows driver.
It is needed to have a correct behavior of input and output
simultenously, but I don't know why ! */
WRITEREG(3 * (BurstA1_in) + 3 * (ThreshA1_in) +
3 * (BurstA1_out) + 3 * (ThreshA1_out) +
3 * (BurstA2_out) + 3 * (ThreshA2_out), PCI_BT_A);
/* enable audio port pins */
WRITEREG((EAP << 16) | EAP, MC1);
/* enable I2C */
WRITEREG((EI2C << 16) | EI2C, MC1);
/* enable interrupts */
WRITEREG(A1_out | A2_out | A1_in | IIC_S | IIC_E, IER);
/* audio configuration */
acon2 = A2_CLKSRC | BCLK1_OEN;
WRITEREG(acon2, ACON2);
/* By default use analog input */
snd_aw2_saa7146_use_digital_input(chip, 0);
/* TSL setup */
for (i = 0; i < 8; ++i) {
WRITEREG(tsl1[i], TSL1 + (i * 4));
WRITEREG(tsl2[i], TSL2 + (i * 4));
}
}
void snd_aw2_saa7146_setup(struct snd_aw2_saa7146 *chip,
void __iomem *pci_base_addr)
{
unsigned int acon2;
unsigned int acon1 = 0;
int i;
chip->base_addr = pci_base_addr;
WRITEREG(0, IER);
WRITEREG((MRST_N << 16), MC1);
#ifdef __BIG_ENDIAN
acon1 |= A1_SWAP;
acon1 |= A2_SWAP;
#endif
acon1 |= 0 * WS1_CTRL;
acon1 |= 0 * WS2_CTRL;
acon1 |= 3 * WS4_CTRL;
acon1 |= 2 * WS3_CTRL;
acon1 |= 3 * AUDIO_MODE;
WRITEREG(acon1, ACON1);
WRITEREG(3 * (BurstA1_in) + 3 * (ThreshA1_in) +
3 * (BurstA1_out) + 3 * (ThreshA1_out) +
3 * (BurstA2_out) + 3 * (ThreshA2_out), PCI_BT_A);
WRITEREG((EAP << 16) | EAP, MC1);
WRITEREG((EI2C << 16) | EI2C, MC1);
WRITEREG(A1_out | A2_out | A1_in | IIC_S | IIC_E, IER);
acon2 = A2_CLKSRC | BCLK1_OEN;
WRITEREG(acon2, ACON2);
snd_aw2_saa7146_use_digital_input(chip, 0);
for (i = 0; i < 8; ++i) {
WRITEREG(tsl1[i], TSL1 + (i * 4));
WRITEREG(tsl2[i], TSL2 + (i * 4));
}
}
