C++ (Cpp) sunxi_usb_phy_vbus_detect示例

示例#1

文件： sunxi.c 项目： RobertCNelson/u-boot-boards

static int sunxi_musb_enable(struct musb *musb)
{
	int ret;

	pr_debug("%s():\n", __func__);

	musb_ep_select(musb->mregs, 0);
	musb_writeb(musb->mregs, MUSB_FADDR, 0);

	if (enabled)
		return 0;

	/* select PIO mode */
	musb_writeb(musb->mregs, USBC_REG_o_VEND0, 0);

	if (is_host_enabled(musb)) {
		ret = sunxi_usb_phy_vbus_detect(0);
		if (ret == 1) {
			printf("A charger is plugged into the OTG: ");
			return -ENODEV;
		}
		ret = sunxi_usb_phy_id_detect(0);
		if (ret == 1) {
			printf("No host cable detected: ");
			return -ENODEV;
		}
		sunxi_usb_phy_power_on(0); /* port power on */
	}

	USBC_ForceVbusValidToHigh(musb->mregs);

	enabled = true;
	return 0;
}

示例#2

文件： sunxi.c 项目： CreatorDev/u-boot

static int sunxi_musb_init(struct musb *musb)
{
	struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
	int err;

	pr_debug("%s():\n", __func__);

	if (is_host_enabled(musb)) {
		err = sunxi_usb_phy_vbus_detect(0);
		if (err) {
			eprintf("Error: A charger is plugged into the OTG\n");
			return -EIO;
		}
	}

	musb->isr = sunxi_musb_interrupt;

	setbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_USB0);
#ifdef CONFIG_SUNXI_GEN_SUN6I
	setbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_GATE_OFFSET_USB0);
#endif
	sunxi_usb_phy_init(0);

	USBC_ConfigFIFO_Base();
	USBC_EnableDpDmPullUp(musb->mregs);
	USBC_EnableIdPullUp(musb->mregs);

	if (is_host_enabled(musb)) {
		/* Host mode */
		USBC_ForceIdToLow(musb->mregs);
	} else {
		/* Peripheral mode */
		USBC_ForceIdToHigh(musb->mregs);
	}
	USBC_ForceVbusValidToHigh(musb->mregs);

	return 0;
}