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asix-sigma: Decrypt the LA mode switch sequence 

Decode the logic mode start sequence into a series of FPGA instructions
instead and get rid of this sequence of magic numbers.

Signed-off-by: Marek Vasut <marex@denx.de>
This commit is contained in:
Marek Vasut 2014-04-20 19:49:44 +02:00 committed by Bert Vermeulen
parent 1c2736f909
commit 011f1091fa
1 changed files with 17 additions and 3 deletions
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20
hardware/asix-sigma/asix-sigma.c
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@ -455,8 +455,22 @@ static int sigma_fpga_init_la(struct dev_context *devc)
{
/* Initialize the logic analyzer mode. */
uint8_t logic_mode_start[] = {
0x00, 0x40, 0x0f, 0x25, 0x35, 0x40,
0x2a, 0x3a, 0x40, 0x03, 0x20, 0x38,
REG_ADDR_LOW | (READ_ID & 0xf),
REG_ADDR_HIGH | (READ_ID >> 8),
REG_READ_ADDR, /* Read ID register. */
REG_ADDR_LOW | (WRITE_TEST & 0xf),
REG_DATA_LOW | 0x5,
REG_DATA_HIGH_WRITE | 0x5,
REG_READ_ADDR, /* Read scratch register. */
REG_DATA_LOW | 0xa,
REG_DATA_HIGH_WRITE | 0xa,
REG_READ_ADDR, /* Read scratch register. */
REG_ADDR_LOW | (WRITE_MODE & 0xf),
REG_DATA_LOW | 0x0,
REG_DATA_HIGH_WRITE | 0x8,
};
uint8_t result[3];
@ -465,7 +479,7 @@ static int sigma_fpga_init_la(struct dev_context *devc)
/* Initialize the logic analyzer mode. */
sigma_write(logic_mode_start, sizeof(logic_mode_start), devc);
/* Expect a 3 byte reply. */
/* Expect a 3 byte reply since we issued three READ requests. */
ret = sigma_read(result, 3, devc);
if (ret != 3)
goto err;