Hi,
Pawel Laszczak <pawell@xxxxxxxxxxx> writes:
> +static int cdns3_probe(struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> + struct resource *res;
> + struct cdns3 *cdns;
> + void __iomem *regs;
> + int ret;
> +
> + cdns = devm_kzalloc(dev, sizeof(*cdns), GFP_KERNEL);
> + if (!cdns)
> + return -ENOMEM;
> +
> + cdns->dev = dev;
> +
> + platform_set_drvdata(pdev, cdns);
> +
> + res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
> + if (!res) {
> + dev_err(dev, "missing IRQ\n");
> + return -ENODEV;
> + }
> + cdns->irq = res->start;
> +
> + cdns->xhci_res[0] = *res;
> +
> + /*
> + * Request memory region
> + * region-0: xHCI
> + * region-1: Peripheral
> + * region-2: OTG registers
> + */
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + cdns->xhci_res[1] = *res;
> +
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
> + regs = devm_ioremap_resource(dev, res);
> + if (IS_ERR(regs))
> + return PTR_ERR(regs);
> + cdns->dev_regs = regs;
> +
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
> + regs = devm_ioremap_resource(dev, res);
> + if (IS_ERR(regs))
> + return PTR_ERR(regs);
> + cdns->otg_regs = regs;
> +
> + mutex_init(&cdns->mutex);
> +
> + cdns->phy = devm_phy_get(dev, "cdns3,usbphy");
> + if (IS_ERR(cdns->phy)) {
> + ret = PTR_ERR(cdns->phy);
> + if (ret == -ENOSYS || ret == -ENODEV) {
Are you sure you can get ENOSYS here? Have you checked output of
checkpatch --strict?
-:852: WARNING: ENOSYS means 'invalid syscall nr' and nothing else
> +#ifdef CONFIG_PM_SLEEP
> +static int cdns3_suspend(struct device *dev)
> +{
> + /* TODO: Implements this function. */
> + return 0;
> +}
> +
> +static int cdns3_resume(struct device *dev)
> +{
> + /* TODO: Implements this function. */
> + return 0;
> +}
> +#endif /* CONFIG_PM_SLEEP */
> +static int cdns3_runtime_suspend(struct device *dev)
> +{ /* TODO: Implements this function. */
> + return 0;
> +}
> +
> +static int cdns3_runtime_resume(struct device *dev)
> +{
> + /* TODO: Implements this function. */
> + return 0;
> +}
> +#endif /* CONFIG_PM */
please no TODO stubs. Just get rid of your dev_pm_ops if you don't
implement them. Come up with a later patch adding a proper
implementation for PM.
> +static int __init cdns3_driver_platform_register(void)
> +{
> + return platform_driver_register(&cdns3_driver);
> +}
> +module_init(cdns3_driver_platform_register);
> +
> +static void __exit cdns3_driver_platform_unregister(void)
> +{
> + platform_driver_unregister(&cdns3_driver);
> +}
> +module_exit(cdns3_driver_platform_unregister);
module_platform_driver()
> diff --git a/drivers/usb/cdns3/debug.h b/drivers/usb/cdns3/debug.h
> new file mode 100644
> index 000000000000..afb81d224718
> --- /dev/null
> +++ b/drivers/usb/cdns3/debug.h
> @@ -0,0 +1,346 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Cadence USBSS DRD Driver.
> + * Debug header file.
> + *
> + * Copyright (C) 2018 Cadence.
> + *
> + * Author: Pawel Laszczak <pawell@xxxxxxxxxxx>
> + */
> +#ifndef __LINUX_CDNS3_DEBUG
> +#define __LINUX_CDNS3_DEBUG
> +#include "gadget.h"
> +
> +static inline void cdns3_decode_get_status(u8 bRequestType, u16 wIndex,
> + u16 wLength, char *str)
> +{
> + switch (bRequestType & USB_RECIP_MASK) {
> + case USB_RECIP_INTERFACE:
> + sprintf(str, "Get Interface Status Intf = %d, L: = %d",
> + wIndex, wLength);
> + break;
> + case USB_RECIP_ENDPOINT:
> + sprintf(str, "Get Endpoint Status ep%d%s",
> + wIndex & ~USB_DIR_IN,
> + wIndex & USB_DIR_IN ? "in" : "out");
> + break;
> + }
> +}
> +
> +static inline const char *cdns3_decode_device_feature(u16 wValue)
> +{
> + switch (wValue) {
> + case USB_DEVICE_SELF_POWERED:
> + return "Self Powered";
> + case USB_DEVICE_REMOTE_WAKEUP:
> + return "Remote Wakeup";
> + case USB_DEVICE_TEST_MODE:
> + return "Test Mode";
> + case USB_DEVICE_U1_ENABLE:
> + return "U1 Enable";
> + case USB_DEVICE_U2_ENABLE:
> + return "U2 Enable";
> + case USB_DEVICE_LTM_ENABLE:
> + return "LTM Enable";
> + default:
> + return "UNKNOWN";
> + }
> +}
> +
> +static inline const char *cdns3_decode_test_mode(u16 wIndex)
> +{
> + switch (wIndex) {
> + case TEST_J:
> + return ": TEST_J";
> + case TEST_K:
> + return ": TEST_K";
> + case TEST_SE0_NAK:
> + return ": TEST_SE0_NAK";
> + case TEST_PACKET:
> + return ": TEST_PACKET";
> + case TEST_FORCE_EN:
> + return ": TEST_FORCE_EN";
> + default:
> + return ": UNKNOWN";
> + }
> +}
> +
> +static inline void cdns3_decode_set_clear_feature(u8 bRequestType, u8 bRequest,
> + u16 wValue, u16 wIndex,
> + char *str)
> +{
> + switch (bRequestType & USB_RECIP_MASK) {
> + case USB_RECIP_DEVICE:
> + sprintf(str, "%s Device Feature(%s%s)",
> + bRequest == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set",
> + cdns3_decode_device_feature(wValue),
> + wValue == USB_DEVICE_TEST_MODE ?
> + cdns3_decode_test_mode(wIndex) : "");
> + break;
> + case USB_RECIP_INTERFACE:
> + sprintf(str, "%s Interface Feature(%s)",
> + bRequest == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set",
> + wIndex == USB_INTRF_FUNC_SUSPEND ?
> + "Function Suspend" : "UNKNOWN");
> + break;
> + case USB_RECIP_ENDPOINT:
> + sprintf(str, "%s Endpoint Feature(%s ep%d%s)",
> + bRequest == USB_REQ_CLEAR_FEATURE ? "Clear" : "Set",
> + wIndex == USB_ENDPOINT_HALT ? "Halt" : "UNKNOWN",
> + wIndex & ~USB_DIR_IN,
> + wIndex & USB_DIR_IN ? "in" : "out");
> + break;
> + }
> +}
> +
> +static inline const char *cdns3_decode_descriptor(u16 wValue)
> +{
> + switch (wValue >> 8) {
> + case USB_DT_DEVICE:
> + return "Device";
> + case USB_DT_CONFIG:
> + return "Configuration";
> + case USB_DT_STRING:
> + return "String";
> + case USB_DT_INTERFACE:
> + return "Interface";
> + case USB_DT_ENDPOINT:
> + return "Endpoint";
> + case USB_DT_DEVICE_QUALIFIER:
> + return "Device Qualifier";
> + case USB_DT_OTHER_SPEED_CONFIG:
> + return "Other Speed Config";
> + case USB_DT_INTERFACE_POWER:
> + return "Interface Power";
> + case USB_DT_OTG:
> + return "OTG";
> + case USB_DT_DEBUG:
> + return "Debug";
> + case USB_DT_INTERFACE_ASSOCIATION:
> + return "Interface Association";
> + case USB_DT_BOS:
> + return "BOS";
> + case USB_DT_DEVICE_CAPABILITY:
> + return "Device Capability";
> + case USB_DT_SS_ENDPOINT_COMP:
> + return "SS Endpoint Companion";
> + case USB_DT_SSP_ISOC_ENDPOINT_COMP:
> + return "SSP Isochronous Endpoint Companion";
> + default:
> + return "UNKNOWN";
> + }
> +}
> +
> +/**
> + * cdns3_decode_ctrl - returns a string represetion of ctrl request
> + */
> +static inline const char *cdns3_decode_ctrl(char *str, u8 bRequestType,
> + u8 bRequest, u16 wValue,
> + u16 wIndex, u16 wLength)
> +{
> + switch (bRequest) {
> + case USB_REQ_GET_STATUS:
> + cdns3_decode_get_status(bRequestType, wIndex,
> + wLength, str);
> + break;
> + case USB_REQ_CLEAR_FEATURE:
> + case USB_REQ_SET_FEATURE:
> + cdns3_decode_set_clear_feature(bRequestType, bRequest,
> + wValue, wIndex, str);
> + break;
> + case USB_REQ_SET_ADDRESS:
> + sprintf(str, "Set Address Addr: %02x", wValue);
> + break;
> + case USB_REQ_GET_DESCRIPTOR:
> + sprintf(str, "GET %s Descriptor I: %d, L: %d",
> + cdns3_decode_descriptor(wValue),
> + wValue & 0xff, wLength);
> + break;
> + case USB_REQ_SET_DESCRIPTOR:
> + sprintf(str, "SET %s Descriptor I: %d, L: %d",
> + cdns3_decode_descriptor(wValue),
> + wValue & 0xff, wLength);
> + break;
> + case USB_REQ_GET_CONFIGURATION:
> + sprintf(str, "Get Configuration L: %d", wLength);
> + break;
> + case USB_REQ_SET_CONFIGURATION:
> + sprintf(str, "Set Configuration Config: %d ", wValue);
> + break;
> + case USB_REQ_GET_INTERFACE:
> + sprintf(str, "Get Interface Intf: %d, L: %d", wIndex, wLength);
> + break;
> + case USB_REQ_SET_INTERFACE:
> + sprintf(str, "Set Interface Intf: %d, Alt: %d", wIndex, wValue);
> + break;
> + case USB_REQ_SYNCH_FRAME:
> + sprintf(str, "Synch Frame Ep: %d, L: %d", wIndex, wLength);
> + break;
> + case USB_REQ_SET_SEL:
> + sprintf(str, "Set SEL L: %d", wLength);
> + break;
> + case USB_REQ_SET_ISOCH_DELAY:
> + sprintf(str, "Set Isochronous Delay Delay: %d ns", wValue);
> + break;
> + default:
> + sprintf(str,
> + "SETUP BRT: %02x BR: %02x V: %04x I: %04x L: %04x\n",
> + bRequestType, bRequest,
> + wValue, wIndex, wLength);
> + }
> +
> + return str;
> +}
All of these are a flat out copy of dwc3's implementation. It's much,
much better to turn dwc3's implementation into a generic, reusable
library function then spinning your own as a duplicated effort.
> diff --git a/drivers/usb/cdns3/ep0.c b/drivers/usb/cdns3/ep0.c
> new file mode 100644
> index 000000000000..1ef0e9f73e3e
> --- /dev/null
> +++ b/drivers/usb/cdns3/ep0.c
> @@ -0,0 +1,864 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Cadence USBSS DRD Driver - gadget side.
> + *
> + * Copyright (C) 2018 Cadence Design Systems.
> + * Copyright (C) 2017-2018 NXP
> + *
> + * Authors: Pawel Jez <pjez@xxxxxxxxxxx>,
> + * Pawel Laszczak <pawell@xxxxxxxxxxx>
> + * Peter Chen <peter.chen@xxxxxxx>
> + */
> +
> +#include <linux/usb/composite.h>
> +
> +#include "gadget.h"
> +#include "trace.h"
> +
> +static struct usb_endpoint_descriptor cdns3_gadget_ep0_desc = {
> + .bLength = USB_DT_ENDPOINT_SIZE,
> + .bDescriptorType = USB_DT_ENDPOINT,
> + .bmAttributes = USB_ENDPOINT_XFER_CONTROL,
> +};
> +
> +/**
> + * cdns3_ep0_run_transfer - Do transfer on default endpoint hardware
> + * @priv_dev: extended gadget object
> + * @dma_addr: physical address where data is/will be stored
> + * @length: data length
> + * @erdy: set it to 1 when ERDY packet should be sent -
> + * exit from flow control state
> + */
> +static void cdns3_ep0_run_transfer(struct cdns3_device *priv_dev,
> + dma_addr_t dma_addr,
> + unsigned int length, int erdy)
> +{
> + struct cdns3_usb_regs __iomem *regs = priv_dev->regs;
> + struct cdns3_endpoint *priv_ep = ep_to_cdns3_ep(priv_dev->gadget.ep0);
> +
> + priv_dev->ep0_trb->buffer = TRB_BUFFER(dma_addr);
> + priv_dev->ep0_trb->length = TRB_LEN(length);
> + priv_dev->ep0_trb->control = TRB_CYCLE | TRB_IOC | TRB_TYPE(TRB_NORMAL);
> +
> + trace_cdns3_prepare_trb(priv_ep, priv_dev->ep0_trb);
> +
> + cdns3_select_ep(priv_dev, priv_dev->ep0_data_dir);
> +
> + writel(EP_STS_TRBERR, ®s->ep_sts);
> + writel(EP_TRADDR_TRADDR(priv_dev->ep0_trb_dma), ®s->ep_traddr);
> + trace_cdns3_doorbell_ep0(priv_dev->ep0_data_dir ? "ep0in" : "ep0out");
> +
> + /* TRB should be prepared before starting transfer */
> + writel(EP_CMD_DRDY, ®s->ep_cmd);
> +
> + if (erdy)
> + writel(EP_CMD_ERDY, &priv_dev->regs->ep_cmd);
> +}
> +
> +/**
> + * cdns3_ep0_delegate_req - Returns status of handling setup packet
> + * Setup is handled by gadget driver
> + * @priv_dev: extended gadget object
> + * @ctrl_req: pointer to received setup packet
> + *
> + * Returns zero on success or negative value on failure
> + */
> +static int cdns3_ep0_delegate_req(struct cdns3_device *priv_dev,
> + struct usb_ctrlrequest *ctrl_req)
> +{
> + int ret;
> +
> + spin_unlock(&priv_dev->lock);
> + priv_dev->setup_pending = 1;
> + ret = priv_dev->gadget_driver->setup(&priv_dev->gadget, ctrl_req);
> + priv_dev->setup_pending = 0;
> + spin_lock(&priv_dev->lock);
> + return ret;
> +}
> +
> +static void cdns3_prepare_setup_packet(struct cdns3_device *priv_dev)
> +{
> + priv_dev->ep0_data_dir = 0;
> + cdns3_ep0_run_transfer(priv_dev, priv_dev->setup_dma,
> + sizeof(struct usb_ctrlrequest), 0);
> +}
> +
> +/**
> + * cdns3_req_ep0_set_configuration - Handling of SET_CONFIG standard USB request
> + * @priv_dev: extended gadget object
> + * @ctrl_req: pointer to received setup packet
> + *
> + * Returns 0 if success, USB_GADGET_DELAYED_STATUS on deferred status stage,
> + * error code on error
> + */
> +static int cdns3_req_ep0_set_configuration(struct cdns3_device *priv_dev,
> + struct usb_ctrlrequest *ctrl_req)
> +{
> + enum usb_device_state device_state = priv_dev->gadget.state;
> + struct cdns3_endpoint *priv_ep;
> + u32 config = le16_to_cpu(ctrl_req->wValue);
> + int result = 0;
> + int i;
> +
> + switch (device_state) {
> + case USB_STATE_ADDRESS:
> + /* Configure non-control EPs */
> + for (i = 0; i < CDNS3_ENDPOINTS_MAX_COUNT; i++) {
> + priv_ep = priv_dev->eps[i];
> + if (!priv_ep)
> + continue;
> +
> + if (priv_ep->flags & EP_CLAIMED)
> + cdns3_ep_config(priv_ep);
> + }
> +
> + result = cdns3_ep0_delegate_req(priv_dev, ctrl_req);
> +
> + if (result)
> + return result;
> +
> + if (config) {
> + cdns3_set_hw_configuration(priv_dev);
> + } else {
> + cdns3_gadget_unconfig(priv_dev);
> + usb_gadget_set_state(&priv_dev->gadget,
> + USB_STATE_ADDRESS);
this is wrong. If address is zero, state should be default, not
addressed. Addressed would be used on the other branch here, when you
have a non-zero address
> + }
> + break;
> + case USB_STATE_CONFIGURED:
where do you set this state?
> +static int cdns3_ep0_feature_handle_device(struct cdns3_device *priv_dev,
> + struct usb_ctrlrequest *ctrl,
> + int set)
> +{
> + enum usb_device_state state;
> + enum usb_device_speed speed;
> + int ret = 0;
> + u32 wValue;
> + u32 wIndex;
> + u16 tmode;
> +
> + wValue = le16_to_cpu(ctrl->wValue);
> + wIndex = le16_to_cpu(ctrl->wIndex);
> + state = priv_dev->gadget.state;
> + speed = priv_dev->gadget.speed;
> +
> + switch (ctrl->wValue) {
> + case USB_DEVICE_REMOTE_WAKEUP:
> + priv_dev->wake_up_flag = !!set;
> + break;
> + case USB_DEVICE_U1_ENABLE:
> + if (state != USB_STATE_CONFIGURED || speed != USB_SPEED_SUPER)
> + return -EINVAL;
> +
> + priv_dev->u1_allowed = !!set;
> + break;
> + case USB_DEVICE_U2_ENABLE:
> + if (state != USB_STATE_CONFIGURED || speed != USB_SPEED_SUPER)
> + return -EINVAL;
> +
> + priv_dev->u2_allowed = !!set;
> + break;
> + case USB_DEVICE_LTM_ENABLE:
> + ret = -EINVAL;
> + break;
> + case USB_DEVICE_TEST_MODE:
> + if (state != USB_STATE_CONFIGURED || speed > USB_SPEED_HIGH)
> + return -EINVAL;
> +
> + tmode = le16_to_cpu(ctrl->wIndex);
> +
> + if (!set || (tmode & 0xff) != 0)
> + return -EINVAL;
> +
> + switch (tmode >> 8) {
> + case TEST_J:
> + case TEST_K:
> + case TEST_SE0_NAK:
> + case TEST_PACKET:
> + cdns3_set_register_bit(&priv_dev->regs->usb_cmd,
> + USB_CMD_STMODE |
> + USB_STS_TMODE_SEL(tmode - 1));
I'm 90% sure this won't work. There's a reason why we only enter the
requested test mode from status stage. How have you tested this?
> diff --git a/drivers/usb/cdns3/gadget.c b/drivers/usb/cdns3/gadget.c
> new file mode 100644
> index 000000000000..a021eaf07aee
> --- /dev/null
> +++ b/drivers/usb/cdns3/gadget.c
<snip>
> +struct usb_request *cdns3_next_request(struct list_head *list)
> +{
> + if (list_empty(list))
> + return NULL;
> + return list_first_entry(list, struct usb_request, list);
list_first_entry_or_null()
> +void cdns3_gadget_unconfig(struct cdns3_device *priv_dev)
> +{
> + /* RESET CONFIGURATION */
> + writel(USB_CONF_CFGRST, &priv_dev->regs->usb_conf);
> +
> + cdns3_allow_enable_l1(priv_dev, 0);
> + priv_dev->hw_configured_flag = 0;
> + priv_dev->onchip_mem_allocated_size = 0;
clear all test modes? Reset ep0 max_packet_size to 512?
> +static irqreturn_t cdns3_device_irq_handler(int irq, void *data)
> +{
> + struct cdns3_device *priv_dev;
> + struct cdns3 *cdns = data;
> + irqreturn_t ret = IRQ_NONE;
> + unsigned long flags;
> + u32 reg;
> +
> + priv_dev = cdns->gadget_dev;
> + spin_lock_irqsave(&priv_dev->lock, flags);
you're already running in hardirq context. Why do you need this lock at
all? I would be better to use the hardirq handler to mask your
interrupts, so they don't fire again, then used the top-half (softirq)
handler to actually handle the interrupts.
> + /* check USB device interrupt */
> + reg = readl(&priv_dev->regs->usb_ists);
> + writel(reg, &priv_dev->regs->usb_ists);
> +
> + if (reg) {
> + dev_dbg(priv_dev->dev, "IRQ: usb_ists: %08X\n", reg);
I strongly advise against using dev_dbg() for debugging. Even more so
inside your IRQ handler.
> + cdns3_check_usb_interrupt_proceed(priv_dev, reg);
> + ret = IRQ_HANDLED;
> + }
> +
> + /* check endpoint interrupt */
> + reg = readl(&priv_dev->regs->ep_ists);
> +
> + /* handle default endpoint OUT */
> + if (reg & EP_ISTS_EP_OUT0) {
> + cdns3_check_ep0_interrupt_proceed(priv_dev, USB_DIR_OUT);
> + ret = IRQ_HANDLED;
> + }
> +
> + /* handle default endpoint IN */
> + if (reg & EP_ISTS_EP_IN0) {
> + cdns3_check_ep0_interrupt_proceed(priv_dev, USB_DIR_IN);
> + ret = IRQ_HANDLED;
> + }
> +
> + /* check if interrupt from non default endpoint, if no exit */
> + reg &= ~(EP_ISTS_EP_OUT0 | EP_ISTS_EP_IN0);
> + if (!reg)
> + goto irqend;
> +
> + do {
> + unsigned int bit_pos = ffs(reg);
> + u32 bit_mask = 1 << (bit_pos - 1);
> + int index;
> +
> + index = cdns3_ep_reg_pos_to_index(bit_pos);
> + cdns3_check_ep_interrupt_proceed(priv_dev->eps[index]);
> + reg &= ~bit_mask;
> + ret = IRQ_HANDLED;
> + } while (reg);
use for_each_set_bit() here.
> +void cdns3_ep_config(struct cdns3_endpoint *priv_ep)
> +{
> + bool is_iso_ep = (priv_ep->type == USB_ENDPOINT_XFER_ISOC);
> + struct cdns3_device *priv_dev = priv_ep->cdns3_dev;
> + u32 bEndpointAddress = priv_ep->num | priv_ep->dir;
> + u32 interrupt_mask = EP_STS_EN_TRBERREN;
> + u32 max_packet_size = 0;
> + u32 ep_cfg = 0;
> + int ret;
> +
> + if (!priv_ep->dir)
> + interrupt_mask |= EP_STS_EN_DESCMISEN;
> +
> + if (priv_ep->type == USB_ENDPOINT_XFER_INT) {
you can turn tis into a switch statement. It'll look nicer
> + ep_cfg = EP_CFG_EPTYPE(USB_ENDPOINT_XFER_INT);
> + } else if (priv_ep->type == USB_ENDPOINT_XFER_BULK) {
> + ep_cfg = EP_CFG_EPTYPE(USB_ENDPOINT_XFER_BULK);
> + } else {
> + ep_cfg = EP_CFG_EPTYPE(USB_ENDPOINT_XFER_ISOC);
> + interrupt_mask = 0xFFFFFFFF;
> + }
> +
> + switch (priv_dev->gadget.speed) {
> + case USB_SPEED_FULL:
> + max_packet_size = is_iso_ep ? 1023 : 64;
> + break;
> + case USB_SPEED_HIGH:
> + max_packet_size = is_iso_ep ? 1024 : 512;
> + break;
> + case USB_SPEED_SUPER:
> + max_packet_size = 1024;
> + break;
> + default:
> + /* all other speed are not supported */
> + return;
> + }
> +
> + ret = cdns3_ep_onchip_buffer_reserve(priv_dev, CDNS3_EP_BUF_SIZE);
> + if (ret) {
> + dev_err(priv_dev->dev, "onchip mem is full, ep is invalid\n");
> + return;
> + }
> +
> + ep_cfg |= EP_CFG_MAXPKTSIZE(max_packet_size) |
> + EP_CFG_BUFFERING(CDNS3_EP_BUF_SIZE - 1) |
> + EP_CFG_MAXBURST(priv_ep->endpoint.maxburst);
> +
> + cdns3_select_ep(priv_dev, bEndpointAddress);
> +
> + writel(ep_cfg, &priv_dev->regs->ep_cfg);
> + writel(interrupt_mask, &priv_dev->regs->ep_sts_en);
> +
> + dev_dbg(priv_dev->dev, "Configure %s: with val %08x\n",
> + priv_ep->name, ep_cfg);
> +
> + /* enable interrupt for selected endpoint */
> + cdns3_set_register_bit(&priv_dev->regs->ep_ien,
> + cdns3_ep_addr_to_bit_pos(bEndpointAddress));
> +}
--
balbi
Attachment:
signature.asc
Description: PGP signature
