diff options
Diffstat (limited to 'packages/linux/linux-2.6.18/atmel-husb2-udc-driver.patch')
| -rw-r--r-- | packages/linux/linux-2.6.18/atmel-husb2-udc-driver.patch | 2488 |
1 files changed, 2488 insertions, 0 deletions
diff --git a/packages/linux/linux-2.6.18/atmel-husb2-udc-driver.patch b/packages/linux/linux-2.6.18/atmel-husb2-udc-driver.patch new file mode 100644 index 0000000000..f46a8f1dd8 --- /dev/null +++ b/packages/linux/linux-2.6.18/atmel-husb2-udc-driver.patch @@ -0,0 +1,2488 @@ +From nobody Mon Sep 17 00:00:00 2001 +From: Håvard Skinnemoen <hskinnemoen@atmel.com> +Date: Fri Nov 18 18:13:25 2005 +0100 +Subject: [PATCH] Driver for the Atmel HUSB2 Device Controller + +This adds the driver for the Atmel HUSB2 Device Controller. + +--- + + drivers/usb/gadget/Kconfig | 10 + drivers/usb/gadget/Makefile | 1 + drivers/usb/gadget/gadget_chips.h | 8 + drivers/usb/gadget/husb2_udc.c | 1998 ++++++++++++++++++++++++++++++++++++++ + drivers/usb/gadget/husb2_udc.h | 406 +++++++ + 5 files changed, 2423 insertions(+) + +Index: linux-2.6.18-avr32/drivers/usb/gadget/Kconfig +=================================================================== +--- linux-2.6.18-avr32.orig/drivers/usb/gadget/Kconfig 2006-11-02 15:54:18.000000000 +0100 ++++ linux-2.6.18-avr32/drivers/usb/gadget/Kconfig 2006-11-02 15:56:20.000000000 +0100 +@@ -154,6 +154,16 @@ config USB_LH7A40X + default USB_GADGET + select USB_GADGET_SELECTED + ++config USB_GADGET_HUSB2DEV ++ boolean "Atmel HUSB2DEVICE" ++ select USB_GADGET_DUALSPEED ++ depends on AVR32 ++ ++config USB_HUSB2DEV ++ tristate ++ depends on USB_GADGET_HUSB2DEV ++ default USB_GADGET ++ select USB_GADGET_SELECTED + + config USB_GADGET_OMAP + boolean "OMAP USB Device Controller" +Index: linux-2.6.18-avr32/drivers/usb/gadget/Makefile +=================================================================== +--- linux-2.6.18-avr32.orig/drivers/usb/gadget/Makefile 2006-11-02 15:54:18.000000000 +0100 ++++ linux-2.6.18-avr32/drivers/usb/gadget/Makefile 2006-11-02 15:56:20.000000000 +0100 +@@ -8,6 +8,7 @@ obj-$(CONFIG_USB_GOKU) += goku_udc.o + obj-$(CONFIG_USB_OMAP) += omap_udc.o + obj-$(CONFIG_USB_LH7A40X) += lh7a40x_udc.o + obj-$(CONFIG_USB_AT91) += at91_udc.o ++obj-$(CONFIG_USB_HUSB2DEV) += husb2_udc.o + + # + # USB gadget drivers +Index: linux-2.6.18-avr32/drivers/usb/gadget/gadget_chips.h +=================================================================== +--- linux-2.6.18-avr32.orig/drivers/usb/gadget/gadget_chips.h 2006-11-02 15:54:18.000000000 +0100 ++++ linux-2.6.18-avr32/drivers/usb/gadget/gadget_chips.h 2006-11-02 15:56:20.000000000 +0100 +@@ -75,6 +75,12 @@ + #define gadget_is_pxa27x(g) 0 + #endif + ++#ifdef CONFIG_USB_GADGET_HUSB2DEV ++#define gadget_is_husb2dev(g) !strcmp("husb2_udc", (g)->name) ++#else ++#define gadget_is_husb2dev(g) 0 ++#endif ++ + #ifdef CONFIG_USB_GADGET_S3C2410 + #define gadget_is_s3c2410(g) !strcmp("s3c2410_udc", (g)->name) + #else +@@ -169,5 +175,7 @@ static inline int usb_gadget_controller_ + return 0x16; + else if (gadget_is_mpc8272(gadget)) + return 0x17; ++ else if (gadget_is_husb2dev(gadget)) ++ return 0x80; + return -ENOENT; + } +Index: linux-2.6.18-avr32/drivers/usb/gadget/husb2_udc.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.18-avr32/drivers/usb/gadget/husb2_udc.c 2006-11-02 16:06:40.000000000 +0100 +@@ -0,0 +1,1998 @@ ++/* ++ * Driver for the Atmel HUSB2device high speed USB device controller ++ * ++ * Copyright (C) 2005-2006 Atmel Corporation ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++#undef DEBUG ++ ++#include <linux/config.h> ++#include <linux/clk.h> ++#include <linux/module.h> ++#include <linux/init.h> ++#include <linux/interrupt.h> ++#include <linux/device.h> ++#include <linux/dma-mapping.h> ++#include <linux/list.h> ++#include <linux/platform_device.h> ++#include <linux/usb_ch9.h> ++#include <linux/usb_gadget.h> ++#include <linux/dmapool.h> ++#include <linux/delay.h> ++ ++#include <asm/io.h> ++ ++#include "husb2_udc.h" ++ ++#define DRIVER_VERSION "0.9" ++ ++#define DMA_ADDR_INVALID (~(dma_addr_t)0) ++ ++#define FIFO_IOMEM_ID 0 ++#define CTRL_IOMEM_ID 1 ++ ++#ifdef DEBUG ++#define DBG_ERR 0x0001 /* report all error returns */ ++#define DBG_HW 0x0002 /* debug hardware initialization */ ++#define DBG_GADGET 0x0004 /* calls to/from gadget driver */ ++#define DBG_INT 0x0008 /* interrupts */ ++#define DBG_BUS 0x0010 /* report changes in bus state */ ++#define DBG_QUEUE 0x0020 /* debug request queue processing */ ++#define DBG_FIFO 0x0040 /* debug FIFO contents */ ++#define DBG_DMA 0x0080 /* debug DMA handling */ ++#define DBG_REQ 0x0100 /* print out queued request length */ ++#define DBG_ALL 0xffff ++#define DBG_NONE 0x0000 ++ ++#define DEBUG_LEVEL (DBG_ERR|DBG_REQ) ++#define DBG(level, fmt, ...) \ ++ do { \ ++ if ((level) & DEBUG_LEVEL) \ ++ printk(KERN_DEBUG "udc: " fmt, ## __VA_ARGS__); \ ++ } while (0) ++#else ++#define DBG(level, fmt...) ++#endif ++ ++static struct husb2_udc the_udc; ++ ++#ifdef CONFIG_DEBUG_FS ++#include <linux/debugfs.h> ++#include <asm/uaccess.h> ++ ++static int queue_dbg_open(struct inode *inode, struct file *file) ++{ ++ struct husb2_ep *ep = inode->u.generic_ip; ++ struct husb2_request *req, *req_copy; ++ struct list_head *queue_data; ++ ++ queue_data = kmalloc(sizeof(*queue_data), GFP_KERNEL); ++ if (!queue_data) ++ return -ENOMEM; ++ INIT_LIST_HEAD(queue_data); ++ ++ spin_lock_irq(&ep->udc->lock); ++ list_for_each_entry(req, &ep->queue, queue) { ++ req_copy = kmalloc(sizeof(*req_copy), GFP_ATOMIC); ++ if (!req_copy) ++ goto fail; ++ memcpy(req_copy, req, sizeof(*req_copy)); ++ list_add_tail(&req_copy->queue, queue_data); ++ } ++ spin_unlock_irq(&ep->udc->lock); ++ ++ file->private_data = queue_data; ++ return 0; ++ ++fail: ++ spin_unlock_irq(&ep->udc->lock); ++ list_for_each_entry_safe(req, req_copy, queue_data, queue) { ++ list_del(&req->queue); ++ kfree(req); ++ } ++ kfree(queue_data); ++ return -ENOMEM; ++} ++ ++/* ++ * bbbbbbbb llllllll IZS sssss nnnn FDL\n\0 ++ * ++ * b: buffer address ++ * l: buffer length ++ * I/i: interrupt/no interrupt ++ * Z/z: zero/no zero ++ * S/s: short ok/short not ok ++ * s: status ++ * n: nr_packets ++ * F/f: submitted/not submitted to FIFO ++ * D/d: using/not using DMA ++ * L/l: last transaction/not last transaction ++ */ ++static ssize_t queue_dbg_read(struct file *file, char __user *buf, ++ size_t nbytes, loff_t *ppos) ++{ ++ struct list_head *queue = file->private_data; ++ struct husb2_request *req, *tmp_req; ++ size_t len, remaining, actual = 0; ++ char tmpbuf[38]; ++ ++ if (!access_ok(VERIFY_WRITE, buf, nbytes)) ++ return -EFAULT; ++ ++ mutex_lock(&file->f_dentry->d_inode->i_mutex); ++ list_for_each_entry_safe(req, tmp_req, queue, queue) { ++ len = snprintf(tmpbuf, sizeof(tmpbuf), ++ "%8p %08x %c%c%c %5d %4u %c%c%c\n", ++ req->req.buf, req->req.length, ++ req->req.no_interrupt ? 'i' : 'I', ++ req->req.zero ? 'Z' : 'z', ++ req->req.short_not_ok ? 's' : 'S', ++ req->req.status, ++ req->nr_pkts, ++ req->submitted ? 'F' : 'f', ++ req->using_dma ? 'D' : 'd', ++ req->last_transaction ? 'L' : 'l'); ++ len = min(len, sizeof(tmpbuf)); ++ if (len > nbytes) ++ break; ++ ++ list_del(&req->queue); ++ kfree(req); ++ ++ remaining = __copy_to_user(buf, tmpbuf, len); ++ actual += len - remaining; ++ if (remaining) ++ break; ++ ++ nbytes -= len; ++ buf += len; ++ } ++ mutex_unlock(&file->f_dentry->d_inode->i_mutex); ++ ++ return actual; ++} ++ ++static int queue_dbg_release(struct inode *inode, struct file *file) ++{ ++ struct list_head *queue_data = file->private_data; ++ struct husb2_request *req, *tmp_req; ++ ++ list_for_each_entry_safe(req, tmp_req, queue_data, queue) { ++ list_del(&req->queue); ++ kfree(req); ++ } ++ kfree(queue_data); ++ return 0; ++} ++ ++static int regs_dbg_open(struct inode *inode, struct file *file) ++{ ++ struct husb2_udc *udc; ++ unsigned int i; ++ u32 *data; ++ int ret = -ENOMEM; ++ ++ mutex_lock(&inode->i_mutex); ++ udc = inode->u.generic_ip; ++ data = kmalloc(inode->i_size, GFP_KERNEL); ++ if (!data) ++ goto out; ++ ++ spin_lock_irq(&udc->lock); ++ for (i = 0; i < inode->i_size / 4; i++) ++ data[i] = __raw_readl(udc->regs + i * 4); ++ spin_unlock_irq(&udc->lock); ++ ++ file->private_data = data; ++ ret = 0; ++ ++out: ++ mutex_unlock(&inode->i_mutex); ++ ++ return ret; ++} ++ ++static ssize_t regs_dbg_read(struct file *file, char __user *buf, ++ size_t nbytes, loff_t *ppos) ++{ ++ struct inode *inode = file->f_dentry->d_inode; ++ int ret; ++ ++ mutex_lock(&inode->i_mutex); ++ ret = simple_read_from_buffer(buf, nbytes, ppos, ++ file->private_data, ++ file->f_dentry->d_inode->i_size); ++ mutex_unlock(&inode->i_mutex); ++ ++ return ret; ++} ++ ++static int regs_dbg_release(struct inode *inode, struct file *file) ++{ ++ kfree(file->private_data); ++ return 0; ++} ++ ++const struct file_operations queue_dbg_fops = { ++ .owner = THIS_MODULE, ++ .open = queue_dbg_open, ++ .llseek = no_llseek, ++ .read = queue_dbg_read, ++ .release = queue_dbg_release, ++}; ++ ++const struct file_operations regs_dbg_fops = { ++ .owner = THIS_MODULE, ++ .open = regs_dbg_open, ++ .llseek = generic_file_llseek, ++ .read = regs_dbg_read, ++ .release = regs_dbg_release, ++}; ++ ++static void husb2_ep_init_debugfs(struct husb2_udc *udc, ++ struct husb2_ep *ep) ++{ ++ struct dentry *ep_root; ++ ++ ep_root = debugfs_create_dir(ep_name(ep), udc->debugfs_root); ++ if (!ep_root) ++ goto err_root; ++ ep->debugfs_dir = ep_root; ++ ++ ep->debugfs_queue = debugfs_create_file("queue", 0400, ep_root, ++ ep, &queue_dbg_fops); ++ if (!ep->debugfs_queue) ++ goto err_queue; ++ ++ if (ep_can_dma(ep)) { ++ ep->debugfs_dma_status ++ = debugfs_create_u32("dma_status", 0400, ep_root, ++ &ep->last_dma_status); ++ if (!ep->debugfs_dma_status) ++ goto err_dma_status; ++ } ++ ++ return; ++ ++err_dma_status: ++ debugfs_remove(ep->debugfs_queue); ++err_queue: ++ debugfs_remove(ep_root); ++err_root: ++ dev_err(&ep->udc->pdev->dev, ++ "failed to create debugfs directory for %s\n", ep_name(ep)); ++} ++ ++static void husb2_ep_cleanup_debugfs(struct husb2_ep *ep) ++{ ++ debugfs_remove(ep->debugfs_queue); ++ debugfs_remove(ep->debugfs_dma_status); ++ debugfs_remove(ep->debugfs_dir); ++ ep->debugfs_dma_status = NULL; ++ ep->debugfs_dir = NULL; ++} ++ ++static void husb2_init_debugfs(struct husb2_udc *udc) ++{ ++ struct dentry *root, *regs; ++ struct resource *regs_resource; ++ ++ root = debugfs_create_dir(udc->gadget.name, NULL); ++ if (IS_ERR(root) || !root) ++ goto err_root; ++ udc->debugfs_root = root; ++ ++ regs = debugfs_create_file("regs", 0400, root, udc, ®s_dbg_fops); ++ if (!regs) ++ goto err_regs; ++ ++ regs_resource = platform_get_resource(udc->pdev, IORESOURCE_MEM, ++ CTRL_IOMEM_ID); ++ regs->d_inode->i_size = regs_resource->end - regs_resource->start + 1; ++ udc->debugfs_regs = regs; ++ ++ husb2_ep_init_debugfs(udc, to_husb2_ep(udc->gadget.ep0)); ++ ++ return; ++ ++err_regs: ++ debugfs_remove(root); ++err_root: ++ udc->debugfs_root = NULL; ++ dev_err(&udc->pdev->dev, "debugfs is not available\n"); ++} ++ ++static void husb2_cleanup_debugfs(struct husb2_udc *udc) ++{ ++ husb2_ep_cleanup_debugfs(to_husb2_ep(udc->gadget.ep0)); ++ debugfs_remove(udc->debugfs_regs); ++ debugfs_remove(udc->debugfs_root); ++ udc->debugfs_regs = NULL; ++ udc->debugfs_root = NULL; ++} ++#else ++static inline void husb2_ep_init_debugfs(struct husb2_udc *udc, ++ struct husb2_ep *ep) ++{ ++ ++} ++ ++static inline void husb2_ep_cleanup_debugfs(struct husb2_ep *ep) ++{ ++ ++} ++ ++static inline void husb2_init_debugfs(struct husb2_udc *udc) ++{ ++ ++} ++ ++static inline void husb2_cleanup_debugfs(struct husb2_udc *udc) ++{ ++ ++} ++#endif ++ ++static void copy_to_fifo(void __iomem *fifo, void *buf, int len) ++{ ++ unsigned long tmp; ++ ++ DBG(DBG_FIFO, "copy to FIFO (len %d):\n", len); ++ for (; len > 0; len -= 4, buf += 4, fifo += 4) { ++ tmp = *(unsigned long *)buf; ++ if (len >= 4) { ++ DBG(DBG_FIFO, " -> %08lx\n", tmp); ++ __raw_writel(tmp, fifo); ++ } else { ++ do { ++ DBG(DBG_FIFO, " -> %02lx\n", tmp >> 24); ++ __raw_writeb(tmp >> 24, fifo); ++ fifo++; ++ tmp <<= 8; ++ } while (--len); ++ break; ++ } ++ } ++} ++ ++static void copy_from_fifo(void *buf, void __iomem *fifo, int len) ++{ ++ union { ++ unsigned long *w; ++ unsigned char *b; ++ } p; ++ unsigned long tmp; ++ ++ DBG(DBG_FIFO, "copy from FIFO (len %d):\n", len); ++ for (p.w = buf; len > 0; len -= 4, p.w++, fifo += 4) { ++ if (len >= 4) { ++ tmp = __raw_readl(fifo); ++ *p.w = tmp; ++ DBG(DBG_FIFO, " -> %08lx\n", tmp); ++ } else { ++ do { ++ tmp = __raw_readb(fifo); ++ *p.b = tmp; ++ DBG(DBG_FIFO, " -> %02lx\n", tmp); ++ fifo++, p.b++; ++ } while (--len); ++ } ++ } ++} ++ ++static void next_fifo_transaction(struct husb2_ep *ep, ++ struct husb2_request *req) ++{ ++ unsigned int transaction_len; ++ ++ transaction_len = req->req.length - req->req.actual; ++ req->last_transaction = 1; ++ if (transaction_len > ep->ep.maxpacket) { ++ transaction_len = ep->ep.maxpacket; ++ req->last_transaction = 0; ++ } else if (transaction_len == ep->ep.maxpacket ++ && req->req.zero) { ++ req->last_transaction = 0; ++ } ++ DBG(DBG_QUEUE, "%s: submit_transaction, req %p (length %d)%s\n", ++ ep_name(ep), req, transaction_len, ++ req->last_transaction ? ", done" : ""); ++ ++ copy_to_fifo(ep->fifo, req->req.buf + req->req.actual, transaction_len); ++ husb2_ep_writel(ep, SET_STA, HUSB2_BIT(TX_PK_RDY)); ++ req->req.actual += transaction_len; ++} ++ ++static void submit_request(struct husb2_ep *ep, struct husb2_request *req) ++{ ++ DBG(DBG_QUEUE, "%s: submit_request: req %p (length %d)\n", ++ ep_name(ep), req, req->req.length); ++ ++ req->req.actual = 0; ++ req->submitted = 1; ++ ++ if (req->using_dma) { ++ if (req->req.length == 0) { ++ husb2_ep_writel(ep, CTL_ENB, HUSB2_BIT(TX_PK_RDY)); ++ } else { ++ husb2_ep_writel(ep, CTL_DIS, HUSB2_BIT(TX_PK_RDY)); ++ husb2_dma_writel(ep, NXT_DSC, ++ req->packet[0].desc_dma); ++ husb2_dma_writel(ep, CONTROL, HUSB2_BIT(DMA_LINK)); ++ } ++ } else { ++ next_fifo_transaction(ep, req); ++ if (req->last_transaction) ++ husb2_ep_writel(ep, CTL_ENB, HUSB2_BIT(TX_COMPLETE)); ++ else ++ husb2_ep_writel(ep, CTL_ENB, HUSB2_BIT(TX_PK_RDY)); ++ } ++} ++ ++static void submit_next_request(struct husb2_ep *ep) ++{ ++ struct husb2_request *req; ++ ++ if (list_empty(&ep->queue)) { ++ husb2_ep_writel(ep, CTL_DIS, (HUSB2_BIT(TX_PK_RDY) ++ | HUSB2_BIT(RX_BK_RDY))); ++ return; ++ } ++ ++ req = list_entry(ep->queue.next, struct husb2_request, queue); ++ if (!req->submitted) ++ submit_request(ep, req); ++} ++ ++static void send_status(struct husb2_udc *udc, struct husb2_ep *ep) ++{ ++ ep->state = STATUS_STAGE_IN; ++ husb2_ep_writel(ep, SET_STA, HUSB2_BIT(TX_PK_RDY)); ++ husb2_ep_writel(ep, CTL_ENB, HUSB2_BIT(TX_COMPLETE)); ++} ++ ++static void receive_data(struct husb2_ep *ep) ++{ ++ struct husb2_udc *udc = ep->udc; ++ struct husb2_request *req; ++ unsigned long status; ++ unsigned int bytecount, nr_busy; ++ int is_complete = 0; ++ ++ status = husb2_ep_readl(ep, STA); ++ nr_busy = HUSB2_BFEXT(BUSY_BANKS, status); ++ ++ DBG(DBG_QUEUE, "receive data: nr_busy=%u\n", nr_busy); ++ ++ while (nr_busy > 0) { ++ if (list_empty(&ep->queue)) { ++ husb2_ep_writel(ep, CTL_DIS, HUSB2_BIT(RX_BK_RDY)); ++ break; ++ } ++ req = list_entry(ep->queue.next, ++ struct husb2_request, queue); ++ ++ bytecount = HUSB2_BFEXT(BYTE_COUNT, status); ++ ++ if (status & (1 << 31)) ++ is_complete = 1; ++ if (req->req.actual + bytecount >= req->req.length) { ++ is_complete = 1; ++ bytecount = req->req.length - req->req.actual; ++ } ++ ++ copy_from_fifo(req->req.buf + req->req.actual, ++ ep->fifo, bytecount); ++ req->req.actual += bytecount; ++ ++ husb2_ep_writel(ep, CLR_STA, HUSB2_BIT(RX_BK_RDY)); ++ ++ if (is_complete) { ++ DBG(DBG_QUEUE, "%s: request done\n", ep_name(ep)); ++ req->req.status = 0; ++ list_del_init(&req->queue); ++ req->req.complete(&ep->ep, &req->req); ++ } ++ ++ status = husb2_ep_readl(ep, STA); ++ nr_busy = HUSB2_BFEXT(BUSY_BANKS, status); ++ ++ if (is_complete && ep_is_control(ep)) { ++ BUG_ON(nr_busy != 0); ++ send_status(udc, ep); ++ break; ++ } ++ } ++} ++ ++static void request_complete(struct husb2_ep *ep, ++ struct husb2_request *req, ++ int status) ++{ ++ struct husb2_udc *udc = ep->udc; ++ int i; ++ ++ BUG_ON(!list_empty(&req->queue)); ++ ++ if (req->req.status == -EINPROGRESS) ++ req->req.status = status; ++ ++ if (req->packet) { ++ for (i = 0; i < req->nr_pkts; i++) ++ dma_pool_free(udc->desc_pool, req->packet[i].desc, ++ req->packet[i].desc_dma); ++ kfree(req->packet); ++ req->packet = NULL; ++ dma_unmap_single(&udc->pdev->dev, ++ req->req.dma, req->req.length, ++ (ep_is_in(ep) ++ ? DMA_TO_DEVICE : DMA_FROM_DEVICE)); ++ req->req.dma = DMA_ADDR_INVALID; ++ } ++ ++ DBG(DBG_GADGET | DBG_REQ, ++ "%s: req %p complete: status %d, actual %u\n", ++ ep_name(ep), req, req->req.status, req->req.actual); ++ req->req.complete(&ep->ep, &req->req); ++} ++ ++static void request_complete_list(struct husb2_ep *ep, ++ struct list_head *list, ++ int status) ++{ ++ struct husb2_request *req, *tmp_req; ++ ++ list_for_each_entry_safe(req, tmp_req, list, queue) { ++ list_del_init(&req->queue); ++ request_complete(ep, req, status); ++ } ++} ++ ++static int husb2_ep_enable(struct usb_ep *_ep, ++ const struct usb_endpoint_descriptor *desc) ++{ ++ struct husb2_ep *ep = to_husb2_ep(_ep); ++ struct husb2_udc *udc = ep->udc; ++ unsigned long flags, ept_cfg, maxpacket; ++ ++ DBG(DBG_GADGET, "%s: ep_enable: desc=%p\n", ep_name(ep), desc); ++ ++ maxpacket = le16_to_cpu(desc->wMaxPacketSize); ++ ++ if (ep->index == 0 ++ || desc->bDescriptorType != USB_DT_ENDPOINT ++ || ((desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK) ++ != ep->index) ++ || maxpacket == 0 ++ || maxpacket > ep->fifo_size) { ++ DBG(DBG_ERR, "ep_enable: Invalid argument"); ++ return -EINVAL; ++ } ++ ++ if (((desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ++ == USB_ENDPOINT_XFER_ISOC) ++ && !(ep->capabilities & HUSB2_EP_CAP_ISOC)) { ++ DBG(DBG_ERR, "ep_enable: %s is not isoc capable\n", ++ ep_name(ep)); ++ return -EINVAL; ++ } ++ ++ if (maxpacket <= 8) ++ ept_cfg = HUSB2_BF(EPT_SIZE, HUSB2_EPT_SIZE_8); ++ else ++ /* LSB is bit 1, not 0 */ ++ ept_cfg = HUSB2_BF(EPT_SIZE, fls(maxpacket - 1) - 3); ++ DBG(DBG_HW, "%s: EPT_SIZE = %lu (maxpacket = %lu)\n", ++ ep_name(ep), ept_cfg, maxpacket); ++ ++ if ((desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) ++ ept_cfg |= HUSB2_BIT(EPT_DIR); ++ ++ switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { ++ case USB_ENDPOINT_XFER_CONTROL: ++ ept_cfg |= HUSB2_BF(EPT_TYPE, HUSB2_EPT_TYPE_CONTROL); ++ break; ++ case USB_ENDPOINT_XFER_ISOC: ++ ept_cfg |= HUSB2_BF(EPT_TYPE, HUSB2_EPT_TYPE_ISO); ++ break; ++ case USB_ENDPOINT_XFER_BULK: ++ ept_cfg |= HUSB2_BF(EPT_TYPE, HUSB2_EPT_TYPE_BULK); ++ break; ++ case USB_ENDPOINT_XFER_INT: ++ ept_cfg |= HUSB2_BF(EPT_TYPE, HUSB2_EPT_TYPE_INT); ++ break; ++ } ++ ept_cfg |= HUSB2_BF(BK_NUMBER, ep->nr_banks); ++ ++ spin_lock_irqsave(&ep->udc->lock, flags); ++ ++ if (ep->desc) { ++ spin_unlock_irqrestore(&ep->udc->lock, flags); ++ DBG(DBG_ERR, "ep%d already enabled\n", ep->index); ++ return -EBUSY; ++ } ++ ++ ep->desc = desc; ++ ep->ep.maxpacket = maxpacket; ++ ++ husb2_ep_writel(ep, CFG, ept_cfg); ++ husb2_ep_writel(ep, CTL_ENB, HUSB2_BIT(EPT_ENABLE)); ++ ++ if (ep_can_dma(ep)) { ++ husb2_writel(udc, INT_ENB, ++ (husb2_readl(udc, INT_ENB) ++ | HUSB2_BF(EPT_INT, 1 << ep->index) ++ | HUSB2_BF(DMA_INT, 1 << ep->index))); ++ husb2_ep_writel(ep, CTL_ENB, HUSB2_BIT(AUTO_VALID)); ++ } else { ++ husb2_writel(udc, INT_ENB, ++ (husb2_readl(udc, INT_ENB) ++ | HUSB2_BF(EPT_INT, 1 << ep->index))); ++ } ++ ++ spin_unlock_irqrestore(&udc->lock, flags); ++ ++ DBG(DBG_HW, "EPT_CFG%d after init: %#08lx\n", ep->index, ++ (unsigned long)husb2_ep_readl(ep, CFG)); ++ DBG(DBG_HW, "INT_ENB after init: %#08lx\n", ++ (unsigned long)husb2_readl(udc, INT_ENB)); ++ ++ husb2_ep_init_debugfs(udc, ep); ++ ++ return 0; ++} ++ ++static int husb2_ep_disable(struct usb_ep *_ep) ++{ ++ struct husb2_ep *ep = to_husb2_ep(_ep); ++ struct husb2_udc *udc = ep->udc; ++ LIST_HEAD(req_list); ++ unsigned long flags; ++ ++ DBG(DBG_GADGET, "ep_disable: %s\n", ep_name(ep)); ++ ++ husb2_ep_cleanup_debugfs(ep); ++ ++ spin_lock_irqsave(&udc->lock, flags); ++ ++ if (!ep->desc) { ++ spin_unlock_irqrestore(&udc->lock, flags); ++ DBG(DBG_ERR, "ep_disable: %s not enabled\n", ++ ep_name(ep)); ++ return -EINVAL; ++ } ++ ep->desc = NULL; ++ ++ list_splice_init(&ep->queue, &req_list); ++ if (ep_can_dma(ep)) { ++ husb2_dma_writel(ep, CONTROL, 0); ++ husb2_dma_writel(ep, ADDRESS, 0); ++ husb2_dma_readl(ep, STATUS); ++ } ++ husb2_ep_writel(ep, CTL_DIS, HUSB2_BIT(EPT_ENABLE)); ++ husb2_writel(udc, INT_ENB, (husb2_readl(udc, INT_ENB) ++ & ~HUSB2_BF(EPT_INT, 1 << ep->index))); ++ ++ spin_unlock_irqrestore(&udc->lock, flags); ++ ++ request_complete_list(ep, &req_list, -ESHUTDOWN); ++ ++ return 0; ++} ++ ++static struct usb_request * ++husb2_ep_alloc_request(struct usb_ep *_ep, unsigned gfp_flags) ++{ ++ struct husb2_request *req; ++ ++ DBG(DBG_GADGET, "ep_alloc_request: %p, 0x%x\n", _ep, gfp_flags); ++ ++ req = kzalloc(sizeof(*req), gfp_flags); ++ if (!req) ++ return NULL; ++ ++ INIT_LIST_HEAD(&req->queue); ++ req->req.dma = DMA_ADDR_INVALID; ++ ++ return &req->req; ++} ++ ++static void ++husb2_ep_free_request(struct usb_ep *_ep, struct usb_request *_req) ++{ ++ struct husb2_request *req = to_husb2_req(_req); ++ ++ DBG(DBG_GADGET, "ep_free_request: %p, %p\n", _ep, _req); ++ ++ kfree(req); ++} ++ ++static void *husb2_ep_alloc_buffer(struct usb_ep *_ep, unsigned bytes, ++ dma_addr_t *dma, unsigned gfp_flags) ++{ ++ struct husb2_ep *ep = to_husb2_ep(_ep); ++ void *buf; ++ ++ /* ++ * We depend on kmalloc() returning cache-aligned memory. This ++ * is normally guaranteed as long as we allocate a whole ++ * cacheline or more. ++ * ++ * When CONFIG_DEBUG_SLAB is enabled, however, the slab ++ * allocator inserts red zones and ownership information, ++ * causing the slab objects to be misaligned. ++ * ++ * One alternative would be to use dma_alloc_coherent, but ++ * that would make us unable to allocate anything less than a ++ * page at a time. ++ */ ++#ifdef CONFIG_DEBUG_SLAB ++# error The HUSB2 UDC driver breaks with SLAB debugging enabled ++#endif ++ ++ if (bytes < L1_CACHE_BYTES) ++ bytes = L1_CACHE_BYTES; ++ ++ buf = kmalloc(bytes, gfp_flags); ++ ++ /* ++ * Seems like we have to map the buffer any chance we get. ++ * ether.c wants us to initialize the dma member of a ++ * different request than the one receiving the buffer, so one ++ * never knows... ++ * ++ * Ah, screw it. The ether driver is probably wrong, and this ++ * is not the right place to do the mapping. The driver ++ * shouldn't mess with our DMA mappings anyway. ++ */ ++ *dma = DMA_ADDR_INVALID; ++ ++ DBG(DBG_GADGET, "ep_alloc_buffer: %s, %u, 0x%x -> %p\n", ++ ep_name(ep), bytes, gfp_flags, buf); ++ ++ return buf; ++} ++ ++static void husb2_ep_free_buffer(struct usb_ep *_ep, void *buf, ++ dma_addr_t dma, unsigned bytes) ++{ ++ DBG(DBG_GADGET, "ep_free_buffer: %s, buf %p (size %u)\n", ++ _ep->name, buf, bytes); ++ kfree(buf); ++} ++ ++static int queue_dma(struct husb2_udc *udc, struct husb2_ep *ep, ++ struct husb2_request *req, unsigned int direction, ++ gfp_t gfp_flags) ++{ ++ struct husb2_packet *pkt, *prev_pkt; ++ unsigned int pkt_size, nr_pkts, i; ++ unsigned int residue; ++ dma_addr_t addr; ++ unsigned long flags; ++ u32 ctrl; ++ ++ req->using_dma = 1; ++ ++ if (req->req.length == 0) { ++ if (!req->req.zero) ++ return -EINVAL; ++ req->send_zlp = 1; ++ ++ spin_lock_irqsave(&udc->lock, flags); ++ husb2_ep_writel(ep, CTL_ENB, HUSB2_BIT(TX_PK_RDY)); ++ list_add_tail(&req->queue, &ep->queue); ++ spin_unlock_irqrestore(&udc->lock, flags); ++ ++ return 0; ++ } ++ ++ if (req->req.dma == DMA_ADDR_INVALID) ++ req->req.dma = dma_map_single(&udc->pdev->dev, ++ req->req.buf, ++ req->req.length, ++ direction); ++ else ++ dma_sync_single_for_device(&udc->pdev->dev, ++ req->req.dma, ++ req->req.length, ++ direction); ++ ++ pkt_size = ep->ep.maxpacket; ++ nr_pkts = req->req.length / pkt_size; ++ residue = req->req.length % pkt_size; ++ if (residue != 0) ++ nr_pkts++; ++ else if (req->req.zero && ep_is_in(ep)) ++ /* ensure last packet is short */ ++ req->send_zlp = 1; ++ ++ req->nr_pkts = nr_pkts; ++ ++ req->packet = kzalloc(sizeof(*req->packet) * nr_pkts, gfp_flags); ++ if (!req->packet) ++ goto out_of_memory; ++ ++ addr = req->req.dma; ++ ctrl = (HUSB2_BF(DMA_BUF_LEN, pkt_size) ++ | HUSB2_BIT(DMA_CH_EN) | HUSB2_BIT(DMA_LINK) ++ | HUSB2_BIT(DMA_END_TR_EN) | HUSB2_BIT(DMA_END_TR_IE)); ++ prev_pkt = NULL; ++ pkt = NULL; ++ DBG(DBG_DMA, "DMA descriptors:\n"); ++ for (i = 0; i < nr_pkts; i++) { ++ pkt = &req->packet[i]; ++ pkt->desc = dma_pool_alloc(udc->desc_pool, gfp_flags, ++ &pkt->desc_dma); ++ if (!pkt->desc) ++ goto out_of_memory; ++ ++ if (prev_pkt) { ++ prev_pkt->desc->next = pkt->desc_dma; ++ DBG(DBG_DMA, "[%d] n%08x a%08x c%08x\n", ++ i - 1, prev_pkt->desc->next, prev_pkt->desc->addr, ++ prev_pkt->desc->ctrl); ++ } ++ prev_pkt = pkt; ++ ++ pkt->desc->addr = addr; ++ pkt->desc->ctrl = ctrl; ++ addr += pkt_size; ++ } ++ ++ /* special care is needed for the last packet... */ ++ ctrl = (HUSB2_BIT(DMA_CH_EN) ++ | HUSB2_BIT(DMA_END_TR_EN) | HUSB2_BIT(DMA_END_TR_IE) ++ | HUSB2_BIT(DMA_END_BUF_IE)); ++ if (ep_is_in(ep)) ++ ctrl |= HUSB2_BIT(DMA_END_BUF_EN); ++ if (req->req.zero || residue) ++ ctrl |= HUSB2_BF(DMA_BUF_LEN, residue); ++ else ++ ctrl |= HUSB2_BF(DMA_BUF_LEN, pkt_size); ++ pkt->desc->ctrl = ctrl; ++ ++ DBG(DBG_DMA, "[%d] n%08x a%08x c%08x\n", ++ i - 1, prev_pkt->desc->next, prev_pkt->desc->addr, ++ prev_pkt->desc->ctrl); ++ ++ /* Add this request to the queue and try to chain the DMA descriptors */ ++ spin_lock_irqsave(&udc->lock, flags); ++ ++ /* If the DMA controller is idle, start it */ ++ if (list_empty(&ep->queue)) { ++ husb2_dma_writel(ep, NXT_DSC, req->packet[0].desc_dma); ++ husb2_dma_writel(ep, CONTROL, HUSB2_BIT(DMA_LINK)); ++ } ++ ++ list_add_tail(&req->queue, &ep->queue); ++ ++ spin_unlock_irqrestore(&udc->lock, flags); ++ ++ return 0; ++ ++out_of_memory: ++ printk(KERN_ERR "ERROR: Could not allocate DMA memory for endpoint %s\n", ++ ep_name(ep)); ++ if (req->packet) { ++ for (i = 0; i < nr_pkts; i++) ++ if (req->packet[i].desc) ++ dma_pool_free(udc->desc_pool, ++ req->packet[i].desc, ++ req->packet[i].desc_dma); ++ kfree(req->packet); ++ } ++ ++ return -ENOMEM; ++} ++ ++static int husb2_ep_queue(struct usb_ep *_ep, struct usb_request *_req, ++ gfp_t gfp_flags) ++{ ++ struct husb2_request *req = to_husb2_req(_req); ++ struct husb2_ep *ep = to_husb2_ep(_ep); ++ struct husb2_udc *udc = ep->udc; ++ unsigned long flags; ++ int direction_in = 0; ++ ++ DBG(DBG_GADGET | DBG_QUEUE | DBG_REQ, ++ "%s: queue req %p, len %u\n", ep_name(ep), req, _req->length); ++ ++ if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) ++ return -ESHUTDOWN; ++ if (!ep->desc) ++ return -ENODEV; ++ ++ req->nr_pkts = 0; ++ req->submitted = 0; ++ req->using_dma = 0; ++ req->last_transaction = 0; ++ req->send_zlp = 0; ++ ++ BUG_ON(req->packet); ++ ++ if (ep_is_in(ep) ++ || (ep_is_control(ep) && (ep->state == DATA_STAGE_IN ++ || ep->state == STATUS_STAGE_IN))) ++ direction_in = 1; ++ ++ _req->status = -EINPROGRESS; ++ _req->actual = 0; ++ ++ if (ep_can_dma(ep)) { ++ return queue_dma(udc, ep, req, (direction_in ++ ? DMA_TO_DEVICE ++ : DMA_FROM_DEVICE), ++ gfp_flags); ++ } else { ++ spin_lock_irqsave(&udc->lock, flags); ++ list_add_tail(&req->queue, &ep->queue); ++ ++ if (direction_in) ++ husb2_ep_writel(ep, CTL_ENB, HUSB2_BIT(TX_PK_RDY)); ++ else ++ husb2_ep_writel(ep, CTL_ENB, HUSB2_BIT(RX_BK_RDY)); ++ spin_unlock_irqrestore(&udc->lock, flags); ++ } ++ ++ return 0; ++} ++ ++static void husb2_update_req(struct husb2_ep *ep, struct husb2_request *req, ++ u32 status) ++{ ++ struct husb2_dma_desc *desc; ++ dma_addr_t from; ++ dma_addr_t addr; ++ size_t size; ++ unsigned int i; ++ ++ addr = husb2_dma_readl(ep, ADDRESS); ++ req->req.actual = 0; ++ ++ for (i = 0; i < req->nr_pkts; i++) { ++ desc = req->packet[i].desc; ++ from = desc->addr; ++ size = HUSB2_BFEXT(DMA_BUF_LEN, desc->ctrl); ++ ++ req->req.actual += size; ++ ++ DBG(DBG_DMA, " from=%#08x, size=%#zx\n", from, size); ++ ++ if (from <= addr && (from + size) >= addr) ++ break; ++ } ++ ++ req->req.actual -= HUSB2_BFEXT(DMA_BUF_LEN, status); ++} ++ ++static int stop_dma(struct husb2_ep *ep, u32 *pstatus) ++{ ++ unsigned int timeout; ++ u32 status; ++ ++ /* ++ * Stop the DMA controller. When writing both CH_EN ++ * and LINK to 0, the other bits are not affected. ++ */ ++ husb2_dma_writel(ep, CONTROL, 0); ++ ++ /* Wait for the FIFO to empty */ ++ for (timeout = 40; timeout; --timeout) { ++ status = husb2_dma_readl(ep, STATUS); ++ if (!(status & HUSB2_BIT(DMA_CH_EN))) ++ break; ++ udelay(1); ++ } ++ ++ if (pstatus) ++ *pstatus = status; ++ ++ if (timeout == 0) { ++ dev_err(&ep->udc->pdev->dev, ++ "%s: timed out waiting for DMA FIFO to empty\n", ++ ep_name(ep)); ++ return -ETIMEDOUT; ++ } ++ ++ return 0; ++} ++ ++static int husb2_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) ++{ ++ struct husb2_ep *ep = to_husb2_ep(_ep); ++ struct husb2_udc *udc = ep->udc; ++ struct husb2_request *req = to_husb2_req(_req); ++ unsigned long flags; ++ u32 status; ++ ++ DBG(DBG_GADGET | DBG_QUEUE, "ep_dequeue: %s, req %p\n", ep_name(ep), req); ++ ++ spin_lock_irqsave(&udc->lock, flags); ++ ++ if (req->using_dma) { ++ /* ++ * If this request is currently being transferred, ++ * stop the DMA controller and reset the FIFO. ++ */ ++ if (ep->queue.next == &req->queue) { ++ status = husb2_dma_readl(ep, STATUS); ++ if (status & HUSB2_BIT(DMA_CH_EN)) ++ stop_dma(ep, &status); ++ ++#ifdef CONFIG_DEBUG_FS ++ ep->last_dma_status = status; ++#endif ++ ++ husb2_writel(udc, EPT_RST, ++ 1 << ep_index(ep)); ++ ++ husb2_update_req(ep, req, status); ++ } ++ } ++ ++ /* ++ * Errors should stop the queue from advancing until the ++ * completion function returns. ++ */ ++ list_del_init(&req->queue); ++ spin_unlock_irqrestore(&udc->lock, flags); ++ ++ request_complete(ep, req, -ECONNRESET); ++ ++ /* Process the next request if any */ ++ spin_lock_irqsave(&udc->lock, flags); ++ submit_next_request(ep); ++ spin_unlock_irqrestore(&udc->lock, flags); ++ ++ return 0; ++} ++ ++static int husb2_ep_set_halt(struct usb_ep *_ep, int value) ++{ ++ struct husb2_ep *ep = to_husb2_ep(_ep); ++ struct husb2_udc *udc = ep->udc; ++ unsigned long flags; ++ int ret = 0; ++ ++ DBG(DBG_GADGET, "endpoint %s: %s HALT\n", ep_name(ep), ++ value ? "set" : "clear"); ++ ++ if (!ep->desc) { ++ DBG(DBG_ERR, "Attempted to halt uninitialized ep %s\n", ++ ep_name(ep)); ++ return -ENODEV; ++ } ++ if (ep_is_isochronous(ep)) { ++ DBG(DBG_ERR, "Attempted to halt isochronous ep %s\n", ++ ep_name(ep)); ++ return -ENOTTY; ++ } ++ ++ spin_lock_irqsave(&udc->lock, flags); ++ ++ /* ++ * We can't halt IN endpoints while there are still data to be ++ * transferred ++ */ ++ if (!list_empty(&ep->queue) ++ || ((value && ep_is_in(ep) ++ && (husb2_ep_readl(ep, STA) ++ & HUSB2_BF(BUSY_BANKS, -1L))))) { ++ ret = -EAGAIN; ++ } else { ++ if (value) ++ husb2_ep_writel(ep, SET_STA, HUSB2_BIT(FORCE_STALL)); ++ else ++ husb2_ep_writel(ep, CLR_STA, (HUSB2_BIT(FORCE_STALL) ++ | HUSB2_BIT(TOGGLE_SEQ))); ++ husb2_ep_readl(ep, STA); ++ } ++ ++ spin_unlock_irqrestore(&udc->lock, flags); ++ ++ return ret; ++} ++ ++static int husb2_ep_fifo_status(struct usb_ep *_ep) ++{ ++ struct husb2_ep *ep = to_husb2_ep(_ep); ++ ++ return HUSB2_BFEXT(BYTE_COUNT, husb2_ep_readl(ep, STA)); ++} ++ ++static void husb2_ep_fifo_flush(struct usb_ep *_ep) ++{ ++ struct husb2_ep *ep = to_husb2_ep(_ep); ++ struct husb2_udc *udc = ep->udc; ++ ++ husb2_writel(udc, EPT_RST, 1 << ep->index); ++} ++ ++struct usb_ep_ops husb2_ep_ops = { ++ .enable = husb2_ep_enable, ++ .disable = husb2_ep_disable, ++ .alloc_request = husb2_ep_alloc_request, ++ .free_request = husb2_ep_free_request, ++ .alloc_buffer = husb2_ep_alloc_buffer, ++ .free_buffer = husb2_ep_free_buffer, ++ .queue = husb2_ep_queue, ++ .dequeue = husb2_ep_dequeue, ++ .set_halt = husb2_ep_set_halt, ++ .fifo_status = husb2_ep_fifo_status, ++ .fifo_flush = husb2_ep_fifo_flush, ++}; ++ ++static int husb2_udc_get_frame(struct usb_gadget *gadget) ++{ ++ struct husb2_udc *udc = to_husb2_udc(gadget); ++ ++ return HUSB2_BFEXT(FRAME_NUMBER, husb2_readl(udc, FNUM)); ++} ++ ++struct usb_gadget_ops husb2_udc_ops = { ++ .get_frame = husb2_udc_get_frame, ++}; ++ ++#define EP(nam, type, idx, caps) { \ ++ .ep = { \ ++ .ops = &husb2_ep_ops, \ ++ .name = nam, \ ++ .maxpacket = type##_FIFO_SIZE, \ ++ }, \ ++ .udc = &the_udc, \ ++ .queue = LIST_HEAD_INIT(husb2_ep[idx].queue), \ ++ .fifo_size = type##_FIFO_SIZE, \ ++ .nr_banks = type##_NR_BANKS, \ ++ .index = idx, \ ++ .capabilities = caps, \ ++} ++ ++static struct husb2_ep husb2_ep[] = { ++ EP("ep0", EP0, 0, 0), ++ EP("ep1in-bulk", BULK, 1, HUSB2_EP_CAP_DMA), ++ EP("ep2out-bulk", BULK, 2, HUSB2_EP_CAP_DMA), ++ EP("ep3in-iso", ISO, 3, HUSB2_EP_CAP_DMA | HUSB2_EP_CAP_ISOC), ++ EP("ep4out-iso", ISO, 4, HUSB2_EP_CAP_DMA | HUSB2_EP_CAP_ISOC), ++ EP("ep5in-int", INT, 5, HUSB2_EP_CAP_DMA), ++ EP("ep6out-int", INT, 6, HUSB2_EP_CAP_DMA), ++}; ++#undef EP ++ ++static struct usb_endpoint_descriptor husb2_ep0_desc = { ++ .bLength = USB_DT_ENDPOINT_SIZE, ++ .bDescriptorType = USB_DT_ENDPOINT, ++ .bEndpointAddress = 0, ++ .bmAttributes = USB_ENDPOINT_XFER_CONTROL, ++ .wMaxPacketSize = __constant_cpu_to_le16(64), ++ /* FIXME: I have no idea what to put here */ ++ .bInterval = 1, ++}; ++ ++static void nop_release(struct device *dev) ++{ ++ ++} ++ ++static struct husb2_udc the_udc = { ++ .gadget = { ++ .ops = &husb2_udc_ops, ++ .ep0 = &husb2_ep[0].ep, ++ .ep_list = LIST_HEAD_INIT(the_udc.gadget.ep_list), ++ .is_dualspeed = 1, ++ .name = "husb2_udc", ++ .dev = { ++ .bus_id = "gadget", ++ .release = nop_release, ++ }, ++ }, ++ ++ .lock = SPIN_LOCK_UNLOCKED, ++}; ++ ++static void udc_enable(struct husb2_udc *udc) ++{ ++ struct husb2_ep *ep0 = &husb2_ep[0]; ++ ++ /* Enable the controller */ ++ husb2_writel(udc, CTRL, HUSB2_BIT(EN_HUSB2)); ++ ++ /* Reset all endpoints and enable basic interrupts */ ++ husb2_writel(udc, EPT_RST, ~0UL); ++ husb2_writel(udc, INT_ENB, (HUSB2_BIT(DET_SUSPEND) ++ | HUSB2_BIT(END_OF_RESET) ++ | HUSB2_BIT(END_OF_RESUME))); ++ ++ /* Configure endpoint 0 */ ++ ep0->desc = &husb2_ep0_desc; ++ ++ husb2_writel(udc, EPT_RST, 1 << 0); ++ husb2_ep_writel(ep0, CTL_ENB, HUSB2_BIT(EPT_ENABLE)); ++ husb2_ep_writel(ep0, CFG, (HUSB2_BF(EPT_SIZE, EP0_EPT_SIZE) ++ | HUSB2_BF(EPT_TYPE, HUSB2_EPT_TYPE_CONTROL) ++ | HUSB2_BF(BK_NUMBER, HUSB2_BK_NUMBER_ONE))); ++ ++ husb2_ep_writel(ep0, CTL_ENB, HUSB2_BIT(RX_SETUP)); ++ husb2_writel(udc, INT_ENB, (husb2_readl(udc, INT_ENB) ++ | HUSB2_BF(EPT_INT, 1))); ++ ++ if (!(husb2_ep_readl(ep0, CFG) & HUSB2_BIT(EPT_MAPPED))) ++ dev_warn(&udc->pdev->dev, ++ "WARNING: EP0 configuration is invalid!\n"); ++} ++ ++static void udc_disable(struct husb2_udc *udc) ++{ ++ udc->gadget.speed = USB_SPEED_UNKNOWN; ++ ++ husb2_writel(udc, CTRL, 0); ++} ++ ++/* ++ * Called with interrupts disabled and udc->lock held. ++ */ ++static void reset_all_endpoints(struct husb2_udc *udc) ++{ ++ struct husb2_ep *ep; ++ struct husb2_request *req, *tmp_req; ++ ++ husb2_writel(udc, EPT_RST, ~0UL); ++ ++ ep = to_husb2_ep(udc->gadget.ep0); ++ list_for_each_entry_safe(req, tmp_req, &ep->queue, queue) { ++ list_del_init(&req->queue); ++ request_complete(ep, req, -ECONNRESET); ++ } ++ BUG_ON(!list_empty(&ep->queue)); ++ ++ list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) { ++ if (ep->desc) ++ husb2_ep_disable(&ep->ep); ++ } ++} ++ ++static struct husb2_ep *get_ep_by_addr(struct husb2_udc *udc, u16 wIndex) ++{ ++ struct husb2_ep *ep; ++ ++ if ((wIndex & USB_ENDPOINT_NUMBER_MASK) == 0) ++ return to_husb2_ep(udc->gadget.ep0); ++ ++ list_for_each_entry (ep, &udc->gadget.ep_list, ep.ep_list) { ++ u8 bEndpointAddress; ++ ++ if (!ep->desc) ++ continue; ++ bEndpointAddress = ep->desc->bEndpointAddress; ++ if ((wIndex ^ bEndpointAddress) & USB_DIR_IN) ++ continue; ++ if ((wIndex & USB_ENDPOINT_NUMBER_MASK) ++ == (bEndpointAddress & USB_ENDPOINT_NUMBER_MASK)) ++ return ep; ++ } ++ ++ return NULL; ++} ++ ++/* Called with interrupts disabled and udc->lock held */ ++static inline void set_protocol_stall(struct husb2_udc *udc, ++ struct husb2_ep *ep) ++{ ++ husb2_ep_writel(ep, SET_STA, HUSB2_BIT(FORCE_STALL)); ++ ep->state = WAIT_FOR_SETUP; ++} ++ ++static inline int is_stalled(struct husb2_udc *udc, struct husb2_ep *ep) ++{ ++ if (husb2_ep_readl(ep, STA) & HUSB2_BIT(FORCE_STALL)) ++ return 1; ++ return 0; ++} ++ ++static inline void set_address(struct husb2_udc *udc, unsigned int addr) ++{ ++ u32 regval; ++ ++ DBG(DBG_BUS, "setting address %u...\n", addr); ++ regval = husb2_readl(udc, CTRL); ++ regval = HUSB2_BFINS(DEV_ADDR, addr, regval); ++ husb2_writel(udc, CTRL, regval); ++} ++ ++static int handle_ep0_setup(struct husb2_udc *udc, struct husb2_ep *ep, ++ struct usb_ctrlrequest *crq) ++{ ++ switch (crq->bRequest) { ++ case USB_REQ_GET_STATUS: { ++ u16 status; ++ ++ if (crq->bRequestType == (USB_DIR_IN | USB_RECIP_DEVICE)) { ++ /* Self-powered, no remote wakeup */ ++ status = __constant_cpu_to_le16(1 << 0); ++ } else if (crq->bRequestType ++ == (USB_DIR_IN | USB_RECIP_INTERFACE)) { ++ status = __constant_cpu_to_le16(0); ++ } else if (crq->bRequestType ++ == (USB_DIR_IN | USB_RECIP_ENDPOINT)) { ++ struct husb2_ep *target; ++ ++ target = get_ep_by_addr(udc, le16_to_cpu(crq->wIndex)); ++ if (!target) ++ goto stall; ++ ++ status = 0; ++ if (is_stalled(udc, target)) ++ status |= __constant_cpu_to_le16(1); ++ } else { ++ goto delegate; ++ } ++ ++ /* Write directly to the FIFO. No queueing is done. */ ++ if(crq->wLength != __constant_cpu_to_le16(sizeof(status))) ++ goto stall; ++ ep->state = DATA_STAGE_IN; ++ __raw_writew(status, ep->fifo); ++ husb2_ep_writel(ep, SET_STA, HUSB2_BIT(TX_PK_RDY)); ++ break; ++ } ++ ++ case USB_REQ_CLEAR_FEATURE: { ++ if (crq->bRequestType == USB_RECIP_DEVICE) { ++ /* We don't support TEST_MODE */ ++ goto stall; ++ } else if (crq->bRequestType == USB_RECIP_ENDPOINT) { ++ struct husb2_ep *target; ++ ++ if (crq->wValue != __constant_cpu_to_le16(USB_ENDPOINT_HALT) ++ || crq->wLength != __constant_cpu_to_le16(0)) ++ goto stall; ++ target = get_ep_by_addr(udc, le16_to_cpu(crq->wIndex)); ++ if (!target) ++ goto stall; ++ ++ husb2_ep_writel(target, CLR_STA, (HUSB2_BIT(FORCE_STALL) ++ | HUSB2_BIT(TOGGLE_SEQ))); ++ } else { ++ goto delegate; ++ } ++ ++ send_status(udc, ep); ++ break; ++ } ++ ++ case USB_REQ_SET_FEATURE: { ++ if (crq->bRequestType == USB_RECIP_DEVICE) { ++ /* We don't support TEST_MODE */ ++ goto stall; ++ } else if (crq->bRequestType == USB_RECIP_ENDPOINT) { ++ struct husb2_ep *target; ++ ++ if (crq->wValue != __constant_cpu_to_le16(USB_ENDPOINT_HALT) ++ || crq->wLength != __constant_cpu_to_le16(0)) ++ goto stall; ++ ++ target = get_ep_by_addr(udc, le16_to_cpu(crq->wIndex)); ++ if (!target) ++ goto stall; ++ ++ husb2_ep_writel(target, SET_STA, HUSB2_BIT(FORCE_STALL)); ++ } else ++ goto delegate; ++ ++ send_status(udc, ep); ++ break; ++ } ++ ++ case USB_REQ_SET_ADDRESS: ++ if (crq->bRequestType != (USB_DIR_OUT | USB_RECIP_DEVICE)) ++ goto delegate; ++ ++ set_address(udc, le16_to_cpu(crq->wValue)); ++ send_status(udc, ep); ++ ep->state = STATUS_STAGE_ADDR; ++ break; ++ ++ default: ++ delegate: ++ return udc->driver->setup(&udc->gadget, crq); ++ } ++ ++ return 0; ++ ++stall: ++ printk(KERN_ERR ++ "udc: %s: Invalid setup request: %02x.%02x v%04x i%04x l%d, " ++ "halting endpoint...\n", ++ ep_name(ep), crq->bRequestType, crq->bRequest, ++ le16_to_cpu(crq->wValue), le16_to_cpu(crq->wIndex), ++ le16_to_cpu(crq->wLength)); ++ set_protocol_stall(udc, ep); ++ return -1; ++} ++ ++static void husb2_control_irq(struct husb2_udc *udc, struct husb2_ep *ep) ++{ ++ struct husb2_request *req; ++ u32 epstatus; ++ u32 epctrl; ++ ++restart: ++ epstatus = husb2_ep_readl(ep, STA); ++ epctrl = husb2_ep_readl(ep, CTL); ++ ++ DBG(DBG_INT, "%s: interrupt, status: 0x%08x\n", ++ ep_name(ep), epstatus); ++ ++ req = NULL; ++ if (!list_empty(&ep->queue)) ++ req = list_entry(ep->queue.next, ++ struct husb2_request, queue); ++ ++ if ((epctrl & HUSB2_BIT(TX_PK_RDY)) ++ && !(epstatus & HUSB2_BIT(TX_PK_RDY))) { ++ DBG(DBG_BUS, "tx pk rdy: %d\n", ep->state); ++ ++ if (req->submitted) ++ next_fifo_transaction(ep, req); ++ else ++ submit_request(ep, req); ++ ++ if (req->last_transaction) { ++ husb2_ep_writel(ep, CTL_DIS, HUSB2_BIT(TX_PK_RDY)); ++ husb2_ep_writel(ep, CTL_ENB, HUSB2_BIT(TX_COMPLETE)); ++ } ++ goto restart; ++ } ++ if ((epstatus & epctrl) & HUSB2_BIT(TX_COMPLETE)) { ++ husb2_ep_writel(ep, CLR_STA, HUSB2_BIT(TX_COMPLETE)); ++ DBG(DBG_BUS, "txc: %d\n", ep->state); ++ ++ switch (ep->state) { ++ case DATA_STAGE_IN: ++ husb2_ep_writel(ep, CTL_ENB, HUSB2_BIT(RX_BK_RDY)); ++ husb2_ep_writel(ep, CTL_DIS, ++ HUSB2_BIT(TX_COMPLETE)); ++ ep->state = STATUS_STAGE_OUT; ++ break; ++ case STATUS_STAGE_ADDR: ++ /* Activate our new address */ ++ husb2_writel(udc, CTRL, (husb2_readl(udc, CTRL) ++ | HUSB2_BIT(FADDR_EN))); ++ husb2_ep_writel(ep, CTL_DIS, ++ HUSB2_BIT(TX_COMPLETE)); ++ ep->state = WAIT_FOR_SETUP; ++ break; ++ case STATUS_STAGE_IN: ++ if (req) { ++ list_del_init(&req->queue); ++ request_complete(ep, req, 0); ++ submit_next_request(ep); ++ } ++ BUG_ON(!list_empty(&ep->queue)); ++ husb2_ep_writel(ep, CTL_DIS, ++ HUSB2_BIT(TX_COMPLETE)); ++ ep->state = WAIT_FOR_SETUP; ++ break; ++ default: ++ printk(KERN_ERR ++ "udc: %s: TXCOMP: Invalid endpoint state %d, " ++ "halting endpoint...\n", ++ ep_name(ep), ep->state); ++ set_protocol_stall(udc, ep); ++ break; ++ } ++ ++ goto restart; ++ } ++ if ((epstatus & epctrl) & HUSB2_BIT(RX_BK_RDY)) { ++ DBG(DBG_BUS, "rxc: %d\n", ep->state); ++ ++ switch (ep->state) { ++ case STATUS_STAGE_OUT: ++ husb2_ep_writel(ep, CLR_STA, HUSB2_BIT(RX_BK_RDY)); ++ ++ if (req) { ++ list_del_init(&req->queue); ++ request_complete(ep, req, 0); ++ } ++ husb2_ep_writel(ep, CTL_DIS, HUSB2_BIT(RX_BK_RDY)); ++ ep->state = WAIT_FOR_SETUP; ++ break; ++ ++ case DATA_STAGE_OUT: ++ receive_data(ep); ++ break; ++ ++ default: ++ husb2_ep_writel(ep, CLR_STA, HUSB2_BIT(RX_BK_RDY)); ++ set_protocol_stall(udc, ep); ++ printk(KERN_ERR ++ "udc: %s: RXRDY: Invalid endpoint state %d, " ++ "halting endpoint...\n", ++ ep_name(ep), ep->state); ++ break; ++ } ++ ++ goto restart; ++ } ++ if (epstatus & HUSB2_BIT(RX_SETUP)) { ++ union { ++ struct usb_ctrlrequest crq; ++ unsigned long data[2]; ++ } crq; ++ unsigned int pkt_len; ++ int ret; ++ ++ if (ep->state != WAIT_FOR_SETUP) { ++ /* ++ * Didn't expect a SETUP packet at this ++ * point. Clean up any pending requests (which ++ * may be successful). ++ */ ++ int status = -EPROTO; ++ ++ /* ++ * RXRDY is dropped when SETUP packets arrive. ++ * Just pretend we received the status packet. ++ */ ++ if (ep->state == STATUS_STAGE_OUT) ++ status = 0; ++ ++ if (req) { ++ list_del_init(&req->queue); ++ request_complete(ep, req, status); ++ } ++ BUG_ON(!list_empty(&ep->queue)); ++ } ++ ++ pkt_len = HUSB2_BFEXT(BYTE_COUNT, husb2_ep_readl(ep, STA)); ++ DBG(DBG_HW, "Packet length: %u\n", pkt_len); ++ BUG_ON(pkt_len != sizeof(crq)); ++ ++ DBG(DBG_FIFO, "Copying ctrl request from 0x%p:\n", ep->fifo); ++ copy_from_fifo(crq.data, ep->fifo, sizeof(crq)); ++ ++ /* Free up one bank in the FIFO so that we can ++ * generate or receive a reply right away. */ ++ husb2_ep_writel(ep, CLR_STA, HUSB2_BIT(RX_SETUP)); ++ ++ /* printk(KERN_DEBUG "setup: %d: %02x.%02x\n", ++ ep->state, crq.crq.bRequestType, ++ crq.crq.bRequest); */ ++ ++ if (crq.crq.bRequestType & USB_DIR_IN) { ++ /* ++ * The USB 2.0 spec states that "if wLength is ++ * zero, there is no data transfer phase." ++ * However, testusb #14 seems to actually ++ * expect a data phase even if wLength = 0... ++ */ ++ ep->state = DATA_STAGE_IN; ++ } else { ++ if (crq.crq.wLength != __constant_cpu_to_le16(0)) ++ ep->state = DATA_STAGE_OUT; ++ else ++ ep->state = STATUS_STAGE_IN; ++ } ++ ++ ret = -1; ++ if (ep->index == 0) ++ ret = handle_ep0_setup(udc, ep, &crq.crq); ++ else ++ ret = udc->driver->setup(&udc->gadget, &crq.crq); ++ ++ DBG(DBG_BUS, "req %02x.%02x, length %d, state %d, ret %d\n", ++ crq.crq.bRequestType, crq.crq.bRequest, ++ le16_to_cpu(crq.crq.wLength), ep->state, ret); ++ ++ if (ret < 0) { ++ /* Let the host know that we failed */ ++ set_protocol_stall(udc, ep); ++ } ++ } ++} ++ ++static void husb2_ep_irq(struct husb2_udc *udc, struct husb2_ep *ep) ++{ ++ struct husb2_request *req; ++ u32 epstatus; ++ u32 epctrl; ++ ++ epstatus = husb2_ep_readl(ep, STA); ++ epctrl = husb2_ep_readl(ep, CTL); ++ ++ DBG(DBG_INT, "%s: interrupt, status: 0x%08x\n", ++ ep_name(ep), epstatus); ++ ++ while ((epctrl & HUSB2_BIT(TX_PK_RDY)) ++ && !(epstatus & HUSB2_BIT(TX_PK_RDY))) { ++ BUG_ON(!ep_is_in(ep)); ++ ++ DBG(DBG_BUS, "%s: TX PK ready\n", ep_name(ep)); ++ ++ if (list_empty(&ep->queue)) { ++ dev_warn(&udc->pdev->dev, "ep_irq: queue empty\n"); ++ husb2_ep_writel(ep, CTL_DIS, HUSB2_BIT(TX_PK_RDY)); ++ return; ++ } ++ ++ req = list_entry(ep->queue.next, struct husb2_request, queue); ++ ++ if (req->using_dma) { ++ BUG_ON(!req->send_zlp); ++ ++ /* Send a zero-length packet */ ++ husb2_ep_writel(ep, SET_STA, ++ HUSB2_BIT(TX_PK_RDY)); ++ husb2_ep_writel(ep, CTL_DIS, ++ HUSB2_BIT(TX_PK_RDY)); ++ list_del_init(&req->queue); ++ submit_next_request(ep); ++ request_complete(ep, req, 0); ++ } else { ++ if (req->submitted) ++ next_fifo_transaction(ep, req); ++ else ++ submit_request(ep, req); ++ ++ if (req->last_transaction) { ++ list_del_init(&req->queue); ++ submit_next_request(ep); ++ request_complete(ep, req, 0); ++ } ++ } ++ ++ epstatus = husb2_ep_readl(ep, STA); ++ epctrl = husb2_ep_readl(ep, CTL); ++ } ++ if ((epstatus & epctrl) & HUSB2_BIT(RX_BK_RDY)) { ++ BUG_ON(ep_is_in(ep)); ++ ++ DBG(DBG_BUS, "%s: RX data ready\n", ep_name(ep)); ++ receive_data(ep); ++ husb2_ep_writel(ep, CLR_STA, HUSB2_BIT(RX_BK_RDY)); ++ } ++} ++ ++static void husb2_dma_irq(struct husb2_udc *udc, struct husb2_ep *ep) ++{ ++ struct husb2_request *req; ++ u32 status, control, pending; ++ ++ status = husb2_dma_readl(ep, STATUS); ++ control = husb2_dma_readl(ep, CONTROL); ++#ifdef CONFIG_DEBUG_FS ++ ep->last_dma_status = status; ++#endif ++ pending = status & control; ++ DBG(DBG_INT, "dma irq, status=%#08x, pending=%#08x, control=%#08x\n", ++ status, pending, control); ++ ++ BUG_ON(status & HUSB2_BIT(DMA_CH_EN)); ++ ++ if (list_empty(&ep->queue)) ++ /* Might happen if a reset comes along at the right moment */ ++ return; ++ ++ if (pending & (HUSB2_BIT(DMA_END_TR_ST) | HUSB2_BIT(DMA_END_BUF_ST))) { ++ req = list_entry(ep->queue.next, struct husb2_request, queue); ++ husb2_update_req(ep, req, status); ++ ++ if (req->send_zlp) { ++ husb2_ep_writel(ep, CTL_ENB, HUSB2_BIT(TX_PK_RDY)); ++ } else { ++ list_del_init(&req->queue); ++ submit_next_request(ep); ++ request_complete(ep, req, 0); ++ } ++ } ++} ++ ++static irqreturn_t husb2_udc_irq(int irq, void *devid, struct pt_regs *regs) ++{ ++ struct husb2_udc *udc = devid; ++ u32 status; ++ u32 dma_status; ++ u32 ep_status; ++ ++ spin_lock(&udc->lock); ++ ++ status = husb2_readl(udc, INT_STA); ++ DBG(DBG_INT, "irq, status=%#08x\n", status); ++ ++ if (status & HUSB2_BIT(DET_SUSPEND)) { ++ husb2_writel(udc, INT_CLR, HUSB2_BIT(DET_SUSPEND)); ++ //DBG(DBG_BUS, "Suspend detected\n"); ++ if (udc->gadget.speed != USB_SPEED_UNKNOWN ++ && udc->driver && udc->driver->suspend) ++ udc->driver->suspend(&udc->gadget); ++ } ++ ++ if (status & HUSB2_BIT(WAKE_UP)) { ++ husb2_writel(udc, INT_CLR, HUSB2_BIT(WAKE_UP)); ++ //DBG(DBG_BUS, "Wake Up CPU detected\n"); ++ } ++ ++ if (status & HUSB2_BIT(END_OF_RESUME)) { ++ husb2_writel(udc, INT_CLR, HUSB2_BIT(END_OF_RESUME)); ++ DBG(DBG_BUS, "Resume detected\n"); ++ if (udc->gadget.speed != USB_SPEED_UNKNOWN ++ && udc->driver && udc->driver->resume) ++ udc->driver->resume(&udc->gadget); ++ } ++ ++ dma_status = HUSB2_BFEXT(DMA_INT, status); ++ if (dma_status) { ++ int i; ++ ++ for (i = 1; i < HUSB2_NR_ENDPOINTS; i++) ++ if (dma_status & (1 << i)) ++ husb2_dma_irq(udc, &husb2_ep[i]); ++ } ++ ++ ep_status = HUSB2_BFEXT(EPT_INT, status); ++ if (ep_status) { ++ int i; ++ ++ for (i = 0; i < HUSB2_NR_ENDPOINTS; i++) ++ if (ep_status & (1 << i)) { ++ if (ep_is_control(&husb2_ep[i])) ++ husb2_control_irq(udc, &husb2_ep[i]); ++ else ++ husb2_ep_irq(udc, &husb2_ep[i]); ++ } ++ } ++ ++ if (status & HUSB2_BIT(END_OF_RESET)) { ++ husb2_writel(udc, INT_CLR, HUSB2_BIT(END_OF_RESET)); ++ if (status & HUSB2_BIT(HIGH_SPEED)) { ++ DBG(DBG_BUS, "High-speed bus reset detected\n"); ++ udc->gadget.speed = USB_SPEED_HIGH; ++ } else { ++ DBG(DBG_BUS, "Full-speed bus reset detected\n"); ++ udc->gadget.speed = USB_SPEED_FULL; ++ } ++ /* Better start from scratch... */ ++ reset_all_endpoints(udc); ++ husb2_ep[0].state = WAIT_FOR_SETUP; ++ udc_enable(udc); ++ } ++ ++ spin_unlock(&udc->lock); ++ ++ return IRQ_HANDLED; ++} ++ ++int usb_gadget_register_driver(struct usb_gadget_driver *driver) ++{ ++ struct husb2_udc *udc = &the_udc; ++ int ret; ++ ++ spin_lock(&udc->lock); ++ ++ ret = -ENODEV; ++ if (!udc->pdev) ++ goto out; ++ ret = -EBUSY; ++ if (udc->driver) ++ goto out; ++ ++ udc->driver = driver; ++ udc->gadget.dev.driver = &driver->driver; ++ ++ device_add(&udc->gadget.dev); ++ ret = driver->bind(&udc->gadget); ++ if (ret) { ++ DBG(DBG_ERR, "Could not bind to driver %s: error %d\n", ++ driver->driver.name, ret); ++ device_del(&udc->gadget.dev); ++ ++ udc->driver = NULL; ++ udc->gadget.dev.driver = NULL; ++ goto out; ++ } ++ ++ /* TODO: Create sysfs files */ ++ ++ DBG(DBG_GADGET, "registered driver `%s'\n", driver->driver.name); ++ udc_enable(udc); ++ ++out: ++ spin_unlock(&udc->lock); ++ return ret; ++} ++EXPORT_SYMBOL(usb_gadget_register_driver); ++ ++int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) ++{ ++ struct husb2_udc *udc = &the_udc; ++ int ret; ++ ++ spin_lock(&udc->lock); ++ ++ ret = -ENODEV; ++ if (!udc->pdev) ++ goto out; ++ ret = -EINVAL; ++ if (driver != udc->driver) ++ goto out; ++ ++ local_irq_disable(); ++ udc_disable(udc); ++ local_irq_enable(); ++ ++ driver->unbind(&udc->gadget); ++ udc->driver = NULL; ++ ++ device_del(&udc->gadget.dev); ++ ++ /* TODO: Remove sysfs files */ ++ ++ DBG(DBG_GADGET, "unregistered driver `%s'\n", driver->driver.name); ++ ++out: ++ spin_unlock(&udc->lock); ++ return ret; ++} ++EXPORT_SYMBOL(usb_gadget_unregister_driver); ++ ++static int __devinit husb2_udc_probe(struct platform_device *pdev) ++{ ++ struct resource *regs, *fifo; ++ struct clk *pclk, *hclk; ++ struct husb2_udc *udc = &the_udc; ++ int irq, ret, i; ++ ++ regs = platform_get_resource(pdev, IORESOURCE_MEM, CTRL_IOMEM_ID); ++ fifo = platform_get_resource(pdev, IORESOURCE_MEM, FIFO_IOMEM_ID); ++ if (!regs || !fifo) ++ return -ENXIO; ++ ++ irq = platform_get_irq(pdev, 0); ++ if (irq < 0) ++ return irq; ++ ++ pclk = clk_get(&pdev->dev, "pclk"); ++ if (IS_ERR(pclk)) ++ return PTR_ERR(pclk); ++ hclk = clk_get(&pdev->dev, "hclk"); ++ if (IS_ERR(hclk)) { ++ ret = PTR_ERR(hclk); ++ goto out_put_pclk; ++ } ++ ++ clk_enable(pclk); ++ clk_enable(hclk); ++ ++ udc->pdev = pdev; ++ udc->pclk = pclk; ++ udc->hclk = hclk; ++ ++ ret = -ENOMEM; ++ udc->regs = ioremap(regs->start, regs->end - regs->start + 1); ++ if (!udc->regs) { ++ dev_err(&pdev->dev, "Unable to map I/O memory, aborting.\n"); ++ goto out_disable_clocks; ++ } ++ dev_info(&pdev->dev, "MMIO registers at 0x%08lx mapped at %p\n", ++ (unsigned long)regs->start, udc->regs); ++ udc->fifo = ioremap(fifo->start, fifo->end - fifo->start + 1); ++ if (!udc->fifo) { ++ dev_err(&pdev->dev, "Unable to map FIFO, aborting.\n"); ++ goto out_unmap_regs; ++ } ++ dev_info(&pdev->dev, "FIFO at 0x%08lx mapped at %p\n", ++ (unsigned long)fifo->start, udc->fifo); ++ ++ device_initialize(&udc->gadget.dev); ++ udc->gadget.dev.parent = &pdev->dev; ++ udc->gadget.dev.dma_mask = pdev->dev.dma_mask; ++ ++ /* The 3-word descriptors must be 4-word aligned... */ ++ udc->desc_pool = dma_pool_create("husb2-desc", &pdev->dev, ++ sizeof(struct husb2_dma_desc), ++ 16, 0); ++ if (!udc->desc_pool) { ++ dev_err(&pdev->dev, "Cannot create descriptor DMA pool\n"); ++ goto out_unmap_fifo; ++ } ++ ++ platform_set_drvdata(pdev, udc); ++ ++ udc_disable(udc); ++ ++ INIT_LIST_HEAD(&husb2_ep[0].ep.ep_list); ++ husb2_ep[0].ep_regs = udc->regs + HUSB2_EPT_BASE(0); ++ husb2_ep[0].dma_regs = udc->regs + HUSB2_DMA_BASE(0); ++ husb2_ep[0].fifo = udc->fifo + HUSB2_FIFO_BASE(0); ++ for (i = 1; i < ARRAY_SIZE(husb2_ep); i++) { ++ struct husb2_ep *ep = &husb2_ep[i]; ++ ++ ep->ep_regs = udc->regs + HUSB2_EPT_BASE(i); ++ ep->dma_regs = udc->regs + HUSB2_DMA_BASE(i); ++ ep->fifo = udc->fifo + HUSB2_FIFO_BASE(i); ++ ++ list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list); ++ } ++ ++ ret = request_irq(irq, husb2_udc_irq, SA_SAMPLE_RANDOM, ++ "husb2_udc", udc); ++ if (ret) { ++ dev_err(&pdev->dev, "Cannot request irq %d (error %d)\n", ++ irq, ret); ++ goto out_free_pool; ++ } ++ udc->irq = irq; ++ ++ husb2_init_debugfs(udc); ++ ++ return 0; ++ ++out_free_pool: ++ dma_pool_destroy(udc->desc_pool); ++out_unmap_fifo: ++ iounmap(udc->fifo); ++out_unmap_regs: ++ iounmap(udc->regs); ++out_disable_clocks: ++ clk_disable(hclk); ++ clk_disable(pclk); ++ clk_put(hclk); ++out_put_pclk: ++ clk_put(pclk); ++ ++ platform_set_drvdata(pdev, NULL); ++ ++ return ret; ++} ++ ++static int __devexit husb2_udc_remove(struct platform_device *pdev) ++{ ++ struct husb2_udc *udc; ++ ++ udc = platform_get_drvdata(pdev); ++ if (!udc) ++ return 0; ++ ++ husb2_cleanup_debugfs(udc); ++ ++ free_irq(udc->irq, udc); ++ dma_pool_destroy(udc->desc_pool); ++ iounmap(udc->fifo); ++ iounmap(udc->regs); ++ clk_disable(udc->hclk); ++ clk_disable(udc->pclk); ++ clk_put(udc->hclk); ++ clk_put(udc->pclk); ++ platform_set_drvdata(pdev, NULL); ++ ++ return 0; ++} ++ ++static struct platform_driver udc_driver = { ++ .probe = husb2_udc_probe, ++ .remove = __devexit_p(husb2_udc_remove), ++ .driver = { ++ .name = "usb", ++ }, ++}; ++ ++static int __init udc_init(void) ++{ ++ printk(KERN_INFO "husb2device: Driver version %s\n", DRIVER_VERSION); ++ return platform_driver_register(&udc_driver); ++} ++module_init(udc_init); ++ ++static void __exit udc_exit(void) ++{ ++ platform_driver_unregister(&udc_driver); ++} ++module_exit(udc_exit); ++ ++MODULE_DESCRIPTION("Atmel HUSB2 Device Controller driver"); ++MODULE_AUTHOR("Haavard Skinnemoen <hskinnemoen@atmel.com>"); ++MODULE_LICENSE("GPL"); +Index: linux-2.6.18-avr32/drivers/usb/gadget/husb2_udc.h +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.18-avr32/drivers/usb/gadget/husb2_udc.h 2006-11-02 16:03:44.000000000 +0100 +@@ -0,0 +1,406 @@ ++/* ++ * Driver for the Atmel HUSB2device high speed USB device controller ++ * ++ * Copyright (C) 2005-2006 Atmel Corporation ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++#ifndef __LINUX_USB_GADGET_HUSB2_UDC_H__ ++#define __LINUX_USB_GADGET_HUSB2_UDC_H__ ++ ++/* USB register offsets */ ++#define HUSB2_CTRL 0x0000 ++#define HUSB2_FNUM 0x0004 ++#define HUSB2_INT_ENB 0x0010 ++#define HUSB2_INT_STA 0x0014 ++#define HUSB2_INT_CLR 0x0018 ++#define HUSB2_EPT_RST 0x001c ++#define HUSB2_TST_SOF_CNT 0x00d0 ++#define HUSB2_TST_CNT_A 0x00d4 ++#define HUSB2_TST_CNT_B 0x00d8 ++#define HUSB2_TST_MODE_REG 0x00dc ++#define HUSB2_TST 0x00f0 ++ ++/* USB endpoint register offsets */ ++#define HUSB2_EPT_CFG 0x0000 ++#define HUSB2_EPT_CTL_ENB 0x0004 ++#define HUSB2_EPT_CTL_DIS 0x0008 ++#define HUSB2_EPT_CTL 0x000c ++#define HUSB2_EPT_SET_STA 0x0014 ++#define HUSB2_EPT_CLR_STA 0x0018 ++#define HUSB2_EPT_STA 0x001c ++ ++/* USB DMA register offsets */ ++#define HUSB2_DMA_NXT_DSC 0x0000 ++#define HUSB2_DMA_ADDRESS 0x0004 ++#define HUSB2_DMA_CONTROL 0x0008 ++#define HUSB2_DMA_STATUS 0x000c ++ ++/* Bitfields in CTRL */ ++#define HUSB2_DEV_ADDR_OFFSET 0 ++#define HUSB2_DEV_ADDR_SIZE 7 ++#define HUSB2_FADDR_EN_OFFSET 7 ++#define HUSB2_FADDR_EN_SIZE 1 ++#define HUSB2_EN_HUSB2_OFFSET 8 ++#define HUSB2_EN_HUSB2_SIZE 1 ++#define HUSB2_DETACH_OFFSET 9 ++#define HUSB2_DETACH_SIZE 1 ++#define HUSB2_REMOTE_WAKE_UP_OFFSET 10 ++#define HUSB2_REMOTE_WAKE_UP_SIZE 1 ++ ++/* Bitfields in FNUM */ ++#define HUSB2_MICRO_FRAME_NUM_OFFSET 0 ++#define HUSB2_MICRO_FRAME_NUM_SIZE 3 ++#define HUSB2_FRAME_NUMBER_OFFSET 3 ++#define HUSB2_FRAME_NUMBER_SIZE 11 ++#define HUSB2_FRAME_NUM_ERROR_OFFSET 31 ++#define HUSB2_FRAME_NUM_ERROR_SIZE 1 ++ ++/* Bitfields in INT_ENB/INT_STA/INT_CLR */ ++#define HUSB2_HIGH_SPEED_OFFSET 0 ++#define HUSB2_HIGH_SPEED_SIZE 1 ++#define HUSB2_DET_SUSPEND_OFFSET 1 ++#define HUSB2_DET_SUSPEND_SIZE 1 ++#define HUSB2_MICRO_SOF_OFFSET 2 ++#define HUSB2_MICRO_SOF_SIZE 1 ++#define HUSB2_SOF_OFFSET 3 ++#define HUSB2_SOF_SIZE 1 ++#define HUSB2_END_OF_RESET_OFFSET 4 ++#define HUSB2_END_OF_RESET_SIZE 1 ++#define HUSB2_WAKE_UP_OFFSET 5 ++#define HUSB2_WAKE_UP_SIZE 1 ++#define HUSB2_END_OF_RESUME_OFFSET 6 ++#define HUSB2_END_OF_RESUME_SIZE 1 ++#define HUSB2_UPSTREAM_RESUME_OFFSET 7 ++#define HUSB2_UPSTREAM_RESUME_SIZE 1 ++#define HUSB2_EPT_INT_OFFSET 8 ++#define HUSB2_EPT_INT_SIZE 16 ++#define HUSB2_DMA_INT_OFFSET 24 ++#define HUSB2_DMA_INT_SIZE 8 ++ ++/* Bitfields in EPT_RST */ ++#define HUSB2_RST_OFFSET 0 ++#define HUSB2_RST_SIZE 16 ++ ++/* Bitfields in TST_SOF_CNT */ ++#define HUSB2_SOF_CNT_MAX_OFFSET 0 ++#define HUSB2_SOF_CNT_MAX_SIZE 7 ++#define HUSB2_SOF_CNT_LOAD_OFFSET 7 ++#define HUSB2_SOF_CNT_LOAD_SIZE 1 ++ ++/* Bitfields in TST_CNT_A */ ++#define HUSB2_CNT_A_MAX_OFFSET 0 ++#define HUSB2_CNT_A_MAX_SIZE 7 ++#define HUSB2_CNT_A_LOAD_OFFSET 7 ++#define HUSB2_CNT_A_LOAD_SIZE 1 ++ ++/* Bitfields in TST_CNT_B */ ++#define HUSB2_CNT_B_MAX_OFFSET 0 ++#define HUSB2_CNT_B_MAX_SIZE 7 ++#define HUSB2_CNT_B_LOAD_OFFSET 7 ++#define HUSB2_CNT_B_LOAD_SIZE 1 ++ ++/* Bitfields in TST_MODE_REG */ ++#define HUSB2_TST_MODE_OFFSET 0 ++#define HUSB2_TST_MODE_SIZE 6 ++ ++/* Bitfields in HUSB2_TST */ ++#define HUSB2_SPEED_CFG_OFFSET 0 ++#define HUSB2_SPEED_CFG_SIZE 2 ++#define HUSB2_TST_J_MODE_OFFSET 2 ++#define HUSB2_TST_J_MODE_SIZE 1 ++#define HUSB2_TST_K_MODE_OFFSET 3 ++#define HUSB2_TST_K_MODE_SIZE 1 ++#define HUSB2_TST_PKT_MODE_OFFSE 4 ++#define HUSB2_TST_PKT_MODE_SIZE 1 ++#define HUSB2_OPMODE2_OFFSET 5 ++#define HUSB2_OPMODE2_SIZE 1 ++ ++/* Bitfields in EPT_CFG */ ++#define HUSB2_EPT_SIZE_OFFSET 0 ++#define HUSB2_EPT_SIZE_SIZE 3 ++#define HUSB2_EPT_DIR_OFFSET 3 ++#define HUSB2_EPT_DIR_SIZE 1 ++#define HUSB2_EPT_TYPE_OFFSET 4 ++#define HUSB2_EPT_TYPE_SIZE 2 ++#define HUSB2_BK_NUMBER_OFFSET 6 ++#define HUSB2_BK_NUMBER_SIZE 2 ++#define HUSB2_NB_TRANS_OFFSET 8 ++#define HUSB2_NB_TRANS_SIZE 2 ++#define HUSB2_EPT_MAPPED_OFFSET 31 ++#define HUSB2_EPT_MAPPED_SIZE 1 ++ ++/* Bitfields in EPT_CTL/EPT_CTL_ENB/EPT_CTL_DIS */ ++#define HUSB2_EPT_ENABLE_OFFSET 0 ++#define HUSB2_EPT_ENABLE_SIZE 1 ++#define HUSB2_AUTO_VALID_OFFSET 1 ++#define HUSB2_AUTO_VALID_SIZE 1 ++#define HUSB2_INT_DIS_DMA_OFFSET 3 ++#define HUSB2_INT_DIS_DMA_SIZE 1 ++#define HUSB2_NYET_DIS_OFFSET 4 ++#define HUSB2_NYET_DIS_SIZE 1 ++#define HUSB2_DATAX_RX_OFFSET 6 ++#define HUSB2_DATAX_RX_SIZE 1 ++#define HUSB2_MDATA_RX_OFFSET 7 ++#define HUSB2_MDATA_RX_SIZE 1 ++/* Bits 8-15 and 31 enable interrupts for respective bits in EPT_STA */ ++#define HUSB2_BUSY_BANK_IE_OFFSET 18 ++#define HUSB2_BUSY_BANK_IE_SIZE 1 ++ ++/* Bitfields in EPT_SET_STA/EPT_CLR_STA/EPT_STA */ ++#define HUSB2_FORCE_STALL_OFFSET 5 ++#define HUSB2_FORCE_STALL_SIZE 1 ++#define HUSB2_TOGGLE_SEQ_OFFSET 6 ++#define HUSB2_TOGGLE_SEQ_SIZE 2 ++#define HUSB2_ERR_OVFLW_OFFSET 8 ++#define HUSB2_ERR_OVFLW_SIZE 1 ++#define HUSB2_RX_BK_RDY_OFFSET 9 ++#define HUSB2_RX_BK_RDY_SIZE 1 ++#define HUSB2_KILL_BANK_OFFSET 9 ++#define HUSB2_KILL_BANK_SIZE 1 ++#define HUSB2_TX_COMPLETE_OFFSET 10 ++#define HUSB2_TX_COMPLETE_SIZE 1 ++#define HUSB2_TX_PK_RDY_OFFSET 11 ++#define HUSB2_TX_PK_RDY_SIZE 1 ++#define HUSB2_ISO_ERR_TRANS_OFFSET 11 ++#define HUSB2_ISO_ERR_TRANS_SIZE 1 ++#define HUSB2_RX_SETUP_OFFSET 12 ++#define HUSB2_RX_SETUP_SIZE 1 ++#define HUSB2_ISO_ERR_FLOW_OFFSET 12 ++#define HUSB2_ISO_ERR_FLOW_SIZE 1 ++#define HUSB2_STALL_SENT_OFFSET 13 ++#define HUSB2_STALL_SENT_SIZE 1 ++#define HUSB2_ISO_ERR_CRC_OFFSET 13 ++#define HUSB2_ISO_ERR_CRC_SIZE 1 ++#define HUSB2_ISO_ERR_NBTRANS_OFFSET 13 ++#define HUSB2_ISO_ERR_NBTRANS_SIZE 1 ++#define HUSB2_NAK_IN_OFFSET 14 ++#define HUSB2_NAK_IN_SIZE 1 ++#define HUSB2_ISO_ERR_FLUSH_OFFSET 14 ++#define HUSB2_ISO_ERR_FLUSH_SIZE 1 ++#define HUSB2_NAK_OUT_OFFSET 15 ++#define HUSB2_NAK_OUT_SIZE 1 ++#define HUSB2_CURRENT_BANK_OFFSET 16 ++#define HUSB2_CURRENT_BANK_SIZE 2 ++#define HUSB2_BUSY_BANKS_OFFSET 18 ++#define HUSB2_BUSY_BANKS_SIZE 2 ++#define HUSB2_BYTE_COUNT_OFFSET 20 ++#define HUSB2_BYTE_COUNT_SIZE 11 ++#define HUSB2_SHORT_PACKET_OFFSET 31 ++#define HUSB2_SHORT_PACKET_SIZE 1 ++ ++/* Bitfields in DMA_CONTROL */ ++#define HUSB2_DMA_CH_EN_OFFSET 0 ++#define HUSB2_DMA_CH_EN_SIZE 1 ++#define HUSB2_DMA_LINK_OFFSET 1 ++#define HUSB2_DMA_LINK_SIZE 1 ++#define HUSB2_DMA_END_TR_EN_OFFSET 2 ++#define HUSB2_DMA_END_TR_EN_SIZE 1 ++#define HUSB2_DMA_END_BUF_EN_OFFSET 3 ++#define HUSB2_DMA_END_BUF_EN_SIZE 1 ++#define HUSB2_DMA_END_TR_IE_OFFSET 4 ++#define HUSB2_DMA_END_TR_IE_SIZE 1 ++#define HUSB2_DMA_END_BUF_IE_OFFSET 5 ++#define HUSB2_DMA_END_BUF_IE_SIZE 1 ++#define HUSB2_DMA_DESC_LOAD_IE_OFFSET 6 ++#define HUSB2_DMA_DESC_LOAD_IE_SIZE 1 ++#define HUSB2_DMA_BURST_LOCK_OFFSET 7 ++#define HUSB2_DMA_BURST_LOCK_SIZE 1 ++#define HUSB2_DMA_BUF_LEN_OFFSET 16 ++#define HUSB2_DMA_BUF_LEN_SIZE 16 ++ ++/* Bitfields in DMA_STATUS */ ++#define HUSB2_DMA_CH_ACTIVE_OFFSET 1 ++#define HUSB2_DMA_CH_ACTIVE_SIZE 1 ++#define HUSB2_DMA_END_TR_ST_OFFSET 4 ++#define HUSB2_DMA_END_TR_ST_SIZE 1 ++#define HUSB2_DMA_END_BUF_ST_OFFSET 5 ++#define HUSB2_DMA_END_BUF_ST_SIZE 1 ++#define HUSB2_DMA_DESC_LOAD_ST_OFFSET 6 ++#define HUSB2_DMA_DESC_LOAD_ST_SIZE 1 ++ ++/* Constants for SPEED_CFG */ ++#define HUSB2_SPEED_CFG_NORMAL 0 ++#define HUSB2_SPEED_CFG_FORCE_HIGH 2 ++#define HUSB2_SPEED_CFG_FORCE_FULL 3 ++ ++/* Constants for EPT_SIZE */ ++#define HUSB2_EPT_SIZE_8 0 ++#define HUSB2_EPT_SIZE_16 1 ++#define HUSB2_EPT_SIZE_32 2 ++#define HUSB2_EPT_SIZE_64 3 ++#define HUSB2_EPT_SIZE_128 4 ++#define HUSB2_EPT_SIZE_256 5 ++#define HUSB2_EPT_SIZE_512 6 ++#define HUSB2_EPT_SIZE_1024 7 ++ ++/* Constants for EPT_TYPE */ ++#define HUSB2_EPT_TYPE_CONTROL 0 ++#define HUSB2_EPT_TYPE_ISO 1 ++#define HUSB2_EPT_TYPE_BULK 2 ++#define HUSB2_EPT_TYPE_INT 3 ++ ++/* Constants for BK_NUMBER */ ++#define HUSB2_BK_NUMBER_ZERO 0 ++#define HUSB2_BK_NUMBER_ONE 1 ++#define HUSB2_BK_NUMBER_DOUBLE 2 ++#define HUSB2_BK_NUMBER_TRIPLE 3 ++ ++/* Bit manipulation macros */ ++#define HUSB2_BIT(name) \ ++ (1 << HUSB2_##name##_OFFSET) ++#define HUSB2_BF(name,value) \ ++ (((value) & ((1 << HUSB2_##name##_SIZE) - 1)) \ ++ << HUSB2_##name##_OFFSET) ++#define HUSB2_BFEXT(name,value) \ ++ (((value) >> HUSB2_##name##_OFFSET) \ ++ & ((1 << HUSB2_##name##_SIZE) - 1)) ++#define HUSB2_BFINS(name,value,old) \ ++ (((old) & ~(((1 << HUSB2_##name##_SIZE) - 1) \ ++ << HUSB2_##name##_OFFSET)) \ ++ | HUSB2_BF(name,value)) ++ ++/* Register access macros */ ++#define husb2_readl(udc,reg) \ ++ __raw_readl((udc)->regs + HUSB2_##reg) ++#define husb2_writel(udc,reg,value) \ ++ __raw_writel((value), (udc)->regs + HUSB2_##reg) ++#define husb2_ep_readl(ep,reg) \ ++ __raw_readl((ep)->ep_regs + HUSB2_EPT_##reg) ++#define husb2_ep_writel(ep,reg,value) \ ++ __raw_writel((value), (ep)->ep_regs + HUSB2_EPT_##reg) ++#define husb2_dma_readl(ep,reg) \ ++ __raw_readl((ep)->dma_regs + HUSB2_DMA_##reg) ++#define husb2_dma_writel(ep,reg,value) \ ++ __raw_writel((value), (ep)->dma_regs + HUSB2_DMA_##reg) ++ ++/* Calculate base address for a given endpoint or DMA controller */ ++#define HUSB2_EPT_BASE(x) (0x100 + (x) * 0x20) ++#define HUSB2_DMA_BASE(x) (0x300 + (x) * 0x10) ++#define HUSB2_FIFO_BASE(x) ((x) << 16) ++ ++/* Synth parameters */ ++#define HUSB2_NR_ENDPOINTS 7 ++ ++#define EP0_FIFO_SIZE 64 ++#define EP0_EPT_SIZE HUSB2_EPT_SIZE_64 ++#define EP0_NR_BANKS 1 ++#define BULK_FIFO_SIZE 512 ++#define BULK_EPT_SIZE HUSB2_EPT_SIZE_512 ++#define BULK_NR_BANKS 2 ++#define ISO_FIFO_SIZE 1024 ++#define ISO_EPT_SIZE HUSB2_EPT_SIZE_1024 ++#define ISO_NR_BANKS 3 ++#define INT_FIFO_SIZE 64 ++#define INT_EPT_SIZE HUSB2_EPT_SIZE_64 ++#define INT_NR_BANKS 3 ++ ++enum husb2_ctrl_state { ++ WAIT_FOR_SETUP, ++ DATA_STAGE_IN, ++ DATA_STAGE_OUT, ++ STATUS_STAGE_IN, ++ STATUS_STAGE_OUT, ++ STATUS_STAGE_ADDR, ++}; ++/* ++ EP_STATE_IDLE, ++ EP_STATE_SETUP, ++ EP_STATE_IN_DATA, ++ EP_STATE_OUT_DATA, ++ EP_STATE_SET_ADDR_STATUS, ++ EP_STATE_RX_STATUS, ++ EP_STATE_TX_STATUS, ++ EP_STATE_HALT, ++*/ ++ ++struct husb2_dma_desc { ++ dma_addr_t next; ++ dma_addr_t addr; ++ u32 ctrl; ++}; ++ ++struct husb2_ep { ++ int state; ++ void __iomem *ep_regs; ++ void __iomem *dma_regs; ++ void __iomem *fifo; ++ struct usb_ep ep; ++ struct husb2_udc *udc; ++ ++ struct list_head queue; ++ const struct usb_endpoint_descriptor *desc; ++ ++ u16 fifo_size; ++ u8 nr_banks; ++ u8 index; ++ u8 capabilities; ++ ++#ifdef CONFIG_DEBUG_FS ++ u32 last_dma_status; ++ struct dentry *debugfs_dir; ++ struct dentry *debugfs_queue; ++ struct dentry *debugfs_dma_status; ++#endif ++}; ++#define HUSB2_EP_CAP_ISOC 0x0001 ++#define HUSB2_EP_CAP_DMA 0x0002 ++ ++struct husb2_packet { ++ struct husb2_dma_desc *desc; ++ dma_addr_t desc_dma; ++}; ++ ++struct husb2_request { ++ struct usb_request req; ++ struct list_head queue; ++ ++ struct husb2_packet *packet; ++ unsigned int nr_pkts; ++ ++ unsigned int submitted:1; ++ unsigned int using_dma:1; ++ unsigned int last_transaction:1; ++ unsigned int send_zlp:1; ++}; ++ ++struct husb2_udc { ++ spinlock_t lock; ++ ++ void __iomem *regs; ++ void __iomem *fifo; ++ ++ struct dma_pool *desc_pool; ++ ++ struct usb_gadget gadget; ++ struct usb_gadget_driver *driver; ++ struct platform_device *pdev; ++ int irq; ++ struct clk *pclk; ++ struct clk *hclk; ++ ++#ifdef CONFIG_DEBUG_FS ++ struct dentry *debugfs_root; ++ struct dentry *debugfs_regs; ++#endif ++}; ++ ++#define to_husb2_ep(x) container_of((x), struct husb2_ep, ep) ++#define to_husb2_req(x) container_of((x), struct husb2_request, req) ++#define to_husb2_udc(x) container_of((x), struct husb2_udc, gadget) ++ ++#define ep_index(ep) ((ep)->index) ++#define ep_can_dma(ep) ((ep)->capabilities & HUSB2_EP_CAP_DMA) ++#define ep_is_in(ep) (((ep)->desc->bEndpointAddress \ ++ & USB_ENDPOINT_DIR_MASK) \ ++ == USB_DIR_IN) ++#define ep_is_isochronous(ep) \ ++ (((ep)->desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) \ ++ == USB_ENDPOINT_XFER_ISOC) ++#define ep_is_control(ep) (ep_index(ep) == 0) ++#define ep_name(ep) ((ep)->ep.name) ++#define ep_is_idle(ep) ((ep)->state == EP_STATE_IDLE) ++ ++#endif /* __LINUX_USB_GADGET_HUSB2_H */ |