#include <linux/list.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
-#include <linux/extcon.h>
#include <linux/of.h>
#include <linux/acpi.h>
#include <linux/pinctrl/consumer.h>
return true;
}
-static void rockchip_otg_extcon_evt_worker(struct work_struct *work)
-{
- struct dwc3 *dwc =
- container_of(work, struct dwc3, cable.otg_work.work);
- struct extcon_dev *edev = dwc->cable.edev;
- struct usb_hcd *hcd;
- unsigned long flags;
- int ret;
- u32 reg;
-
- if (extcon_get_cable_state_(edev, EXTCON_USB) > 0) {
- dev_info(dwc->dev, "USB peripheral connected\n");
-
- if (dwc->cable.connected) {
- reg = dwc3_readl(dwc->regs, DWC3_GCTL);
-
- if (DWC3_GCTL_PRTCAP(reg) != DWC3_GCTL_PRTCAP_DEVICE) {
- spin_lock_irqsave(&dwc->lock, flags);
- dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_DEVICE);
- spin_unlock_irqrestore(&dwc->lock, flags);
- }
-
- return;
- }
-
- /*
- * If dr_mode is host only, never to set
- * the mode to the peripheral mode.
- */
- if (WARN_ON(dwc->dr_mode == USB_DR_MODE_HOST))
- return;
-
- ret = phy_power_on(dwc->usb2_generic_phy);
- if (ret < 0)
- return;
-
- ret = phy_power_on(dwc->usb3_generic_phy);
- if (ret < 0)
- return;
-
- spin_lock_irqsave(&dwc->lock, flags);
-
- dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_DEVICE);
- dwc3_gadget_restart(dwc, true);
-
- spin_unlock_irqrestore(&dwc->lock, flags);
-
- dwc->cable.connected = true;
- } else if (extcon_get_cable_state_(edev, EXTCON_USB_HOST) > 0) {
- dev_info(dwc->dev, "USB HOST connected\n");
-
- if (dwc->cable.connected) {
- reg = dwc3_readl(dwc->regs, DWC3_GCTL);
-
- if (DWC3_GCTL_PRTCAP(reg) != DWC3_GCTL_PRTCAP_HOST) {
- spin_lock_irqsave(&dwc->lock, flags);
- dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_HOST);
- spin_unlock_irqrestore(&dwc->lock, flags);
- }
-
- return;
- }
-
- /*
- * If dr_mode is device only, never to
- * set the mode to the host mode.
- */
- if (WARN_ON(dwc->dr_mode == USB_DR_MODE_PERIPHERAL))
- return;
-
- ret = phy_power_on(dwc->usb2_generic_phy);
- if (ret < 0)
- return;
-
- ret = phy_power_on(dwc->usb3_generic_phy);
- if (ret < 0)
- return;
-
- hcd = dev_get_drvdata(&dwc->xhci->dev);
-
- spin_lock_irqsave(&dwc->lock, flags);
-
- dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_HOST);
-
- spin_unlock_irqrestore(&dwc->lock, flags);
-
- if (hcd->state == HC_STATE_HALT) {
- usb_add_hcd(hcd, hcd->irq, IRQF_SHARED);
- usb_add_hcd(hcd->shared_hcd, hcd->irq, IRQF_SHARED);
- }
-
- dwc->cable.connected = true;
- } else {
- dev_info(dwc->dev, "USB unconnected\n");
-
- if (!dwc->cable.connected)
- return;
-
- reg = dwc3_readl(dwc->regs, DWC3_GCTL);
-
- if (DWC3_GCTL_PRTCAP(reg) == DWC3_GCTL_PRTCAP_DEVICE ||
- DWC3_GCTL_PRTCAP(reg) == DWC3_GCTL_PRTCAP_OTG) {
- spin_lock_irqsave(&dwc->lock, flags);
- dwc3_gadget_restart(dwc, false);
- spin_unlock_irqrestore(&dwc->lock, flags);
- }
-
- if (DWC3_GCTL_PRTCAP(reg) == DWC3_GCTL_PRTCAP_HOST ||
- DWC3_GCTL_PRTCAP(reg) == DWC3_GCTL_PRTCAP_OTG) {
- hcd = dev_get_drvdata(&dwc->xhci->dev);
-
- if (hcd->state != HC_STATE_HALT) {
- usb_remove_hcd(hcd->shared_hcd);
- usb_remove_hcd(hcd);
- }
- }
-
- spin_lock_irqsave(&dwc->lock, flags);
-
- switch (dwc->dr_mode) {
- case USB_DR_MODE_PERIPHERAL:
- dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_DEVICE);
- break;
- case USB_DR_MODE_HOST:
- dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_HOST);
- break;
- case USB_DR_MODE_OTG:
- dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_OTG);
- break;
- default:
- return;
- }
-
- spin_unlock_irqrestore(&dwc->lock, flags);
-
- phy_power_off(dwc->usb2_generic_phy);
- phy_power_off(dwc->usb3_generic_phy);
-
- dwc->cable.connected = false;
- }
-}
-
-static int dwc3_rockchip_device_notifier(struct notifier_block *nb,
- unsigned long event, void *ptr)
-{
- struct dwc3 *dwc =
- container_of(nb, struct dwc3, cable.device_nb);
-
- schedule_delayed_work(&dwc->cable.otg_work, 0);
-
- return NOTIFY_DONE;
-}
-
-static int dwc3_rockchip_host_notifier(struct notifier_block *nb,
- unsigned long event, void *ptr)
-{
- struct dwc3 *dwc =
- container_of(nb, struct dwc3, cable.host_nb);
-
- schedule_delayed_work(&dwc->cable.otg_work, 0);
-
- return NOTIFY_DONE;
-}
-
#define DWC3_ALIGN_MASK (16 - 1)
static int dwc3_probe(struct platform_device *pdev)
u8 tx_de_emphasis;
u8 hird_threshold;
u32 fladj = 0;
- struct extcon_dev *edev;
int ret;
return ret;
}
- if (device_property_read_bool(dev, "extcon")) {
- edev = extcon_get_edev_by_phandle(dev, 0);
- if (IS_ERR(edev)) {
- if (PTR_ERR(edev) != -EPROBE_DEFER)
- dev_err(dev, "couldn't get extcon device\n");
- return PTR_ERR(edev);
- }
-
- /* Register for extcon notification */
- INIT_DELAYED_WORK(&dwc->cable.otg_work,
- rockchip_otg_extcon_evt_worker);
- dwc->cable.device_nb.notifier_call =
- dwc3_rockchip_device_notifier;
- dwc->cable.host_nb.notifier_call =
- dwc3_rockchip_host_notifier;
-
- ret = extcon_register_notifier(edev, EXTCON_USB,
- &dwc->cable.device_nb);
- if (ret < 0) {
- dev_err(dev, "failed to register notifier for USB\n");
- return ret;
- }
-
- ret = extcon_register_notifier(edev, EXTCON_USB_HOST,
- &dwc->cable.host_nb);
- if (ret < 0) {
- dev_err(dev, "failed to register notifier for USB HOST\n");
- extcon_unregister_notifier(edev, EXTCON_USB,
- &dwc->cable.device_nb);
- return ret;
- }
-
- /*
- * cable.connected flag is used for otg device/host
- * connect status, true means connection and false
- * means disconnection. However, we initialize the
- * cable.connected with true, though nothing connect
- * with the usb port. It aims to do phy power off
- * and disable controller in cable.work.
- */
- dwc->cable.connected = true;
- dwc->cable.edev = edev;
- }
-
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (!res) {
dev_err(dev, "missing IRQ\n");
usb_phy_set_suspend(dwc->usb2_phy, 0);
usb_phy_set_suspend(dwc->usb3_phy, 0);
-
ret = phy_power_on(dwc->usb2_generic_phy);
if (ret < 0)
goto err2;
goto err6;
}
- if (dwc->cable.edev)
- schedule_delayed_work(&dwc->cable.otg_work, (2 * HZ));
-
pm_runtime_allow(dev);
return 0;
projects / firefly-linux-kernel-4.4.55.git / blobdiff