From 23ba2d6372e45479106922c6241a7a09707bbe08 Mon Sep 17 00:00:00 2001 From: Mugunthan V N Date: Fri, 18 May 2018 13:15:04 +0200 Subject: [PATCH] usb: dwc3: Add dwc3_init/remove with DM_USB The patch is preparing dwc3 core for enabling DM_USB with peripheral driver with using driver model support. The driver will be bound by the DWC3 wrapper driver based on the dr_mode device tree entry. Signed-off-by: Mugunthan V N (Remove dwc3-omap changes) Signed-off-by: Michal Simek --- drivers/usb/dwc3/core.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++ drivers/usb/dwc3/core.h | 6 ++++++ drivers/usb/dwc3/gadget.c | 2 +- 3 files changed, 62 insertions(+), 1 deletion(-) diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 7a91015..7cf0564 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -785,3 +785,58 @@ MODULE_ALIAS("platform:dwc3"); MODULE_AUTHOR("Felipe Balbi "); MODULE_LICENSE("GPL v2"); MODULE_DESCRIPTION("DesignWare USB3 DRD Controller Driver"); + +#ifdef CONFIG_DM_USB + +int dwc3_init(struct dwc3 *dwc) +{ + int ret; + + dwc3_cache_hwparams(dwc); + + ret = dwc3_alloc_event_buffers(dwc, DWC3_EVENT_BUFFERS_SIZE); + if (ret) { + dev_err(dwc->dev, "failed to allocate event buffers\n"); + return -ENOMEM; + } + + ret = dwc3_core_init(dwc); + if (ret) { + dev_err(dev, "failed to initialize core\n"); + goto core_fail; + } + + ret = dwc3_event_buffers_setup(dwc); + if (ret) { + dev_err(dwc->dev, "failed to setup event buffers\n"); + goto event_fail; + } + + ret = dwc3_core_init_mode(dwc); + if (ret) + goto mode_fail; + + return 0; + +mode_fail: + dwc3_event_buffers_cleanup(dwc); + +event_fail: + dwc3_core_exit(dwc); + +core_fail: + dwc3_free_event_buffers(dwc); + + return ret; +} + +void dwc3_remove(struct dwc3 *dwc) +{ + dwc3_core_exit_mode(dwc); + dwc3_event_buffers_cleanup(dwc); + dwc3_free_event_buffers(dwc); + dwc3_core_exit(dwc); + kfree(dwc->mem); +} + +#endif diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index cbe9850..58fe91d 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -712,7 +712,11 @@ struct dwc3 { /* device lock */ spinlock_t lock; +#if defined(__UBOOT__) && defined(CONFIG_DM_USB) + struct udevice *dev; +#else struct device *dev; +#endif struct platform_device *xhci; struct resource xhci_resources[DWC3_XHCI_RESOURCES_NUM]; @@ -987,6 +991,8 @@ struct dwc3_gadget_ep_cmd_params { /* prototypes */ int dwc3_gadget_resize_tx_fifos(struct dwc3 *dwc); +int dwc3_init(struct dwc3 *dwc); +void dwc3_remove(struct dwc3 *dwc); #ifdef CONFIG_USB_DWC3_HOST int dwc3_host_init(struct dwc3 *dwc); diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index d45fae0..e340cb2 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2609,7 +2609,7 @@ int dwc3_gadget_init(struct dwc3 *dwc) if (ret) goto err4; - ret = usb_add_gadget_udc(dwc->dev, &dwc->gadget); + ret = usb_add_gadget_udc((struct device *)dwc->dev, &dwc->gadget); if (ret) { dev_err(dwc->dev, "failed to register udc\n"); goto err4; -- 2.7.4