toaruos/modules/hda.c

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2018-03-16 15:56:19 +03:00
/*
* Experimental Intel High-Definition Audio "driver"
*/
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#include <kernel/module.h>
#include <kernel/printf.h>
#include <kernel/pci.h>
#include <kernel/mod/shell.h>
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struct hda_device {
uint32_t pci_device;
};
static struct hda_device _device;
static void find_hda(uint32_t device, uint16_t vendorid, uint16_t deviceid, void * extra) {
struct hda_device * hda = extra;
if ((vendorid == 0x8086) && (deviceid == 0x2668)) {
hda->pci_device = device;
}
}
DEFINE_SHELL_FUNCTION(hda_test, "[debug] Intel HDA experiments") {
if (!_device.pci_device) {
fprintf(tty, "No HDA device found.\n");
return 1;
}
fprintf(tty, "HDA audio device is at 0x%x.\n", _device.pci_device);
return 0;
}
static int init(void) {
BIND_SHELL_FUNCTION(hda_test);
pci_scan(&find_hda, -1, &_device);
if (!_device.pci_device) {
return 1;
}
return 0;
}
static int fini(void) {
return 0;
}
MODULE_DEF(hda, init, fini);
MODULE_DEPENDS(debugshell);