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amex/gpio.c: Make DIPSW configurable

This commit is contained in:
Tau 2019-04-20 17:42:13 -04:00
parent 706262ce37
commit f6a2e64df2
1 changed files with 19 additions and 1 deletions
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20
amex/gpio.c
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@ -55,6 +55,8 @@ static HRESULT gpio_ioctl_describe(struct irp *irp);
static HRESULT gpio_ioctl_set_leds(struct irp *irp);
static HANDLE gpio_fd;
static uint8_t gpio_dipsw;
static const char gpio_dipsw_file[] = "DEVICE/dipsw.txt";
static const struct gpio_ports gpio_ports = {
.ports = {
@ -75,6 +77,22 @@ static_assert(sizeof(gpio_ports) == 129, "GPIO port map size");
void gpio_hook_init(void)
{
FILE *f;
int ival;
f = fopen(gpio_dipsw_file, "r");
if (f != NULL) {
ival = 0;
fscanf(f, "%02x", &ival);
gpio_dipsw = ival;
fclose(f);
dprintf("Set DIPSW to %02x\n", gpio_dipsw);
} else {
dprintf("Failed to open %s\n", gpio_dipsw_file);
}
gpio_fd = iohook_open_dummy_fd();
iohook_push_handler(gpio_handle_irp);
setupapi_add_phantom_dev(&gpio_guid, L"$gpio");
@ -144,7 +162,7 @@ static HRESULT gpio_ioctl_get_dipsw(struct irp *irp)
{
uint32_t dipsw;
dipsw = 0xff;
dipsw = gpio_dipsw;
//dprintf("GPIO: Get dipsw %08x\n", dipsw);
return iobuf_write_le32(&irp->read, dipsw);