HDA HDMI open test

#include <unistd.h>
#include <alsa/asoundlib.h>

static void open_pcm(const char *card, const char *dev)
{
	char name[128];
	snd_pcm_t *handle;
	int err;

	snprintf(name, sizeof(name), "hw:%s,%s", card, dev);
	err = snd_pcm_open(&handle, name, SND_PCM_STREAM_PLAYBACK, 0);
	printf("PCM - %s - %d (%s)\n", name, err, snd_strerror(err));
}

int main(int argc, char *argv[])
{
	const char *card;

	if (argc > 1) {
		const char *card = argv[1];
		open_pcm(card, "10");
		open_pcm(card, "9");
		open_pcm(card, "8");
		open_pcm(card, "7");
		open_pcm(card, "3");
	} else {
		printf("Specify card...\n");
	}
}