C++ (Cpp) tahvo_usb_become_hostの例

コード例 #1

ファイル: phy-tahvo.c プロジェクト: 3null/linux

static int tahvo_usb_set_host(struct usb_otg *otg, struct usb_bus *host)
{
	struct tahvo_usb *tu = container_of(otg->phy, struct tahvo_usb, phy);

	dev_dbg(&tu->pt_dev->dev, "%s %p\n", __func__, host);

	mutex_lock(&tu->serialize);

	if (host == NULL) {
		if (tu->tahvo_mode == TAHVO_MODE_HOST)
			tahvo_usb_power_off(tu);
		otg->host = NULL;
		mutex_unlock(&tu->serialize);
		return 0;
	}

	if (tu->tahvo_mode == TAHVO_MODE_HOST) {
		otg->host = NULL;
		tahvo_usb_become_host(tu);
	}

	otg->host = host;

	mutex_unlock(&tu->serialize);

	return 0;
}

コード例 #2

static int tahvo_usb_set_host(struct otg_transceiver *otg, struct usb_bus *host)
{
	struct tahvo_usb *tu = container_of(otg, struct tahvo_usb, otg);
	u32 l;

	dev_dbg(&tu->pt_dev->dev, "set_host %p\n", host);

	if (otg == NULL)
		return -ENODEV;

#if defined(CONFIG_USB_OTG) || !defined(CONFIG_USB_GADGET_OMAP)

	mutex_lock(&tu->serialize);

	if (host == NULL) {
		if (TAHVO_MODE(tu) == TAHVO_MODE_HOST)
			tahvo_usb_power_off(tu);
		tu->otg.host = NULL;
		mutex_unlock(&tu->serialize);
		return 0;
	}

	l = omap_readl(OTG_SYSCON_1);
	l &= ~(OTG_IDLE_EN | HST_IDLE_EN | DEV_IDLE_EN);
	omap_writel(l, OTG_SYSCON_1);

	if (TAHVO_MODE(tu) == TAHVO_MODE_HOST) {
		tu->otg.host = NULL;
		tahvo_usb_become_host(tu);
	} else
		host_suspend(tu);

	tu->otg.host = host;

	mutex_unlock(&tu->serialize);
#else
	/* No host mode configured, so do not allow host controlled to be set */
	return -EINVAL;
#endif

	return 0;
}

コード例 #3

ファイル: phy-tahvo.c プロジェクト: 3null/linux

static ssize_t otg_mode_store(struct device *device,
			      struct device_attribute *attr,
			      const char *buf, size_t count)
{
	struct tahvo_usb *tu = dev_get_drvdata(device);
	int r;

	mutex_lock(&tu->serialize);
	if (count >= 4 && strncmp(buf, "host", 4) == 0) {
		if (tu->tahvo_mode == TAHVO_MODE_PERIPHERAL)
			tahvo_usb_stop_peripheral(tu);
		tu->tahvo_mode = TAHVO_MODE_HOST;
		if (tu->phy.otg->host) {
			dev_info(device, "HOST mode: host controller present\n");
			tahvo_usb_become_host(tu);
		} else {
			dev_info(device, "HOST mode: no host controller, powering off\n");
			tahvo_usb_power_off(tu);
		}
		r = strlen(buf);
	} else if (count >= 10 && strncmp(buf, "peripheral", 10) == 0) {
		if (tu->tahvo_mode == TAHVO_MODE_HOST)
			tahvo_usb_stop_host(tu);
		tu->tahvo_mode = TAHVO_MODE_PERIPHERAL;
		if (tu->phy.otg->gadget) {
			dev_info(device, "PERIPHERAL mode: gadget driver present\n");
			tahvo_usb_become_peripheral(tu);
		} else {
			dev_info(device, "PERIPHERAL mode: no gadget driver, powering off\n");
			tahvo_usb_power_off(tu);
		}
		r = strlen(buf);
	} else {
		r = -EINVAL;
	}
	mutex_unlock(&tu->serialize);

	return r;
}

コード例 #4

ファイル: tahvo-usb.c プロジェクト: mozyg/kernel

static ssize_t otg_mode_store(struct device *device,
			      struct device_attribute *attr,
			      const char *buf, size_t count)
{
	struct tahvo_usb *tu = (struct tahvo_usb*) device->driver_data;
	int r;

	r = strlen(buf);
	mutex_lock(&tu->serialize);
	if (strncmp(buf, "host", 4) == 0) {
		if (tu->tahvo_mode == TAHVO_MODE_PERIPHERAL)
			tahvo_usb_stop_peripheral(tu);
		tu->tahvo_mode = TAHVO_MODE_HOST;
		if (tu->otg.host) {
			printk(KERN_INFO "Selected HOST mode: host controller present.\n");
			tahvo_usb_become_host(tu);
		} else {
			printk(KERN_INFO "Selected HOST mode: no host controller, powering off.\n");
			tahvo_usb_power_off(tu);
		}
	} else if (strncmp(buf, "peripheral", 10) == 0) {
		if (tu->tahvo_mode == TAHVO_MODE_HOST)
			tahvo_usb_stop_host(tu);
		tu->tahvo_mode = TAHVO_MODE_PERIPHERAL;
		if (tu->otg.gadget) {
			printk(KERN_INFO "Selected PERIPHERAL mode: gadget driver present.\n");
			tahvo_usb_become_peripheral(tu);
		} else {
			printk(KERN_INFO "Selected PERIPHERAL mode: no gadget driver, powering off.\n");
			tahvo_usb_power_off(tu);
		}
	} else
		r = -EINVAL;

	mutex_unlock(&tu->serialize);
	return r;
}