gistfile1.perl

static void __init omap3_beagle_init_rev(void)
{
	int ret;
	u16 beagle_rev = 0;

	omap_mux_init_gpio(171, OMAP_PIN_INPUT_PULLUP);
	omap_mux_init_gpio(172, OMAP_PIN_INPUT_PULLUP);
	omap_mux_init_gpio(173, OMAP_PIN_INPUT_PULLUP);

	ret = gpio_request_array(omap3_beagle_rev_gpios,
				 ARRAY_SIZE(omap3_beagle_rev_gpios));
	if (ret < 0) {
		printk(KERN_ERR "Unable to get revision detection GPIO pins\n");
		omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
		return;
	}

	beagle_rev = gpio_get_value(171) | (gpio_get_value(172) << 1)
			| (gpio_get_value(173) << 2);

	gpio_free_array(omap3_beagle_rev_gpios,
			ARRAY_SIZE(omap3_beagle_rev_gpios));

	switch (beagle_rev) {
	case 7:
		printk(KERN_INFO "OMAP3 Beagle Rev: Ax/Bx\n");
		omap3_beagle_version = OMAP3BEAGLE_BOARD_AXBX;
		beagle_config.mmc1_gpio_wp = 29;
		beagle_config.reset_gpio = 170;
		beagle_config.usr_button_gpio = 7;
		break;
	case 6:
		printk(KERN_INFO "OMAP3 Beagle Rev: C1/C2/C3\n");
		omap3_beagle_version = OMAP3BEAGLE_BOARD_C1_3;
		beagle_config.mmc1_gpio_wp = 23;
		beagle_config.reset_gpio = 170;
		beagle_config.usr_button_gpio = 7;
		break;
	case 5:
		printk(KERN_INFO "OMAP3 Beagle Rev: C4\n");
		omap3_beagle_version = OMAP3BEAGLE_BOARD_C4;
		beagle_config.mmc1_gpio_wp = 23;
		beagle_config.reset_gpio = 170;
		beagle_config.usr_button_gpio = 7;
		break;
	case 0:
		printk(KERN_INFO "OMAP3 Beagle Rev: xM Ax/Bx\n");
		omap3_beagle_version = OMAP3BEAGLE_BOARD_XM;
		beagle_config.usb_pwr_level = GPIOF_OUT_INIT_HIGH;
		break;
	case 2:
		printk(KERN_INFO "OMAP3 Beagle Rev: xM C\n");
		omap3_beagle_version = OMAP3BEAGLE_BOARD_XMC;
		break;
	default:
		printk(KERN_INFO "OMAP3 Beagle Rev: unknown %hd\n", beagle_rev);
		omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
	}
}