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Code Issues Releases Wiki Activity

ft2232_spi: add an ability to use GPIO for chip selection

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Change-Id: I6db05619e0d69ad18549c8556ef69225337b1532
Signed-off-by: Sergey Alirzaev <zl29ah@gmail.com>
Reviewed-on: https://review.coreboot.org/28911
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
This commit is contained in:
Sergey Alirzaev
2018-08-01 16:39:17 +03:00
committed by Nico Huber
parent 73ab88d58e
commit 4acc3f3a89
2 changed files with 26 additions and 6 deletions
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17
ft2232_spi.c
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@ -327,6 +327,23 @@ int ft2232_spi_init(void)
}
free(arg);
arg = extract_programmer_param("csgpiol");
if (arg) {
char *endptr;
unsigned int temp = strtoul(arg, &endptr, 10);
if (*endptr || endptr == arg || temp > 3) {
msg_perr("Error: Invalid GPIOL specified: \"%s\".\n"
"Valid values are between 0 and 3.\n", arg);
free(arg);
return -2;
} else {
unsigned int pin = temp + 4;
cs_bits |= 1 << pin;
pindir |= 1 << pin;
}
}
free(arg);
msg_pdbg("Using device type %s %s ",
get_ft2232_vendorname(ft2232_vid, ft2232_type),
get_ft2232_devicename(ft2232_vid, ft2232_type));