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authorAndrzej Pietrasiewicz2014-07-15 13:09:45 +0200
committerFelipe Balbi2014-07-16 19:15:28 +0200
commit90fccb529d241b55829701cfb9eb3086570f38b8 (patch)
tree4e788b13b8c35bc5c9d24597479cda82d503bf7c /drivers/usb/gadget/m66592-udc.c
parentusb: gadget: Gadget directory cleanup - group legacy gadgets (diff)
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usb: gadget: Gadget directory cleanup - group UDC drivers
The drivers/usb/gadget directory contains many files. Files which are related can be distributed into separate directories. This patch moves the UDC drivers into a separate directory. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/gadget/m66592-udc.c')
-rw-r--r--drivers/usb/gadget/m66592-udc.c1706
1 files changed, 0 insertions, 1706 deletions
diff --git a/drivers/usb/gadget/m66592-udc.c b/drivers/usb/gadget/m66592-udc.c
deleted file mode 100644
index de88d33b44b2..000000000000
--- a/drivers/usb/gadget/m66592-udc.c
+++ /dev/null
@@ -1,1706 +0,0 @@
-/*
- * M66592 UDC (USB gadget)
- *
- * Copyright (C) 2006-2007 Renesas Solutions Corp.
- *
- * Author : Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- */
-
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <linux/io.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/err.h>
-#include <linux/usb/ch9.h>
-#include <linux/usb/gadget.h>
-
-#include "m66592-udc.h"
-
-MODULE_DESCRIPTION("M66592 USB gadget driver");
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Yoshihiro Shimoda");
-MODULE_ALIAS("platform:m66592_udc");
-
-#define DRIVER_VERSION "21 July 2009"
-
-static const char udc_name[] = "m66592_udc";
-static const char *m66592_ep_name[] = {
- "ep0", "ep1", "ep2", "ep3", "ep4", "ep5", "ep6", "ep7"
-};
-
-static void disable_controller(struct m66592 *m66592);
-static void irq_ep0_write(struct m66592_ep *ep, struct m66592_request *req);
-static void irq_packet_write(struct m66592_ep *ep, struct m66592_request *req);
-static int m66592_queue(struct usb_ep *_ep, struct usb_request *_req,
- gfp_t gfp_flags);
-
-static void transfer_complete(struct m66592_ep *ep,
- struct m66592_request *req, int status);
-
-/*-------------------------------------------------------------------------*/
-static inline u16 get_usb_speed(struct m66592 *m66592)
-{
- return (m66592_read(m66592, M66592_DVSTCTR) & M66592_RHST);
-}
-
-static void enable_pipe_irq(struct m66592 *m66592, u16 pipenum,
- unsigned long reg)
-{
- u16 tmp;
-
- tmp = m66592_read(m66592, M66592_INTENB0);
- m66592_bclr(m66592, M66592_BEMPE | M66592_NRDYE | M66592_BRDYE,
- M66592_INTENB0);
- m66592_bset(m66592, (1 << pipenum), reg);
- m66592_write(m66592, tmp, M66592_INTENB0);
-}
-
-static void disable_pipe_irq(struct m66592 *m66592, u16 pipenum,
- unsigned long reg)
-{
- u16 tmp;
-
- tmp = m66592_read(m66592, M66592_INTENB0);
- m66592_bclr(m66592, M66592_BEMPE | M66592_NRDYE | M66592_BRDYE,
- M66592_INTENB0);
- m66592_bclr(m66592, (1 << pipenum), reg);
- m66592_write(m66592, tmp, M66592_INTENB0);
-}
-
-static void m66592_usb_connect(struct m66592 *m66592)
-{
- m66592_bset(m66592, M66592_CTRE, M66592_INTENB0);
- m66592_bset(m66592, M66592_WDST | M66592_RDST | M66592_CMPL,
- M66592_INTENB0);
- m66592_bset(m66592, M66592_BEMPE | M66592_BRDYE, M66592_INTENB0);
-
- m66592_bset(m66592, M66592_DPRPU, M66592_SYSCFG);
-}
-
-static void m66592_usb_disconnect(struct m66592 *m66592)
-__releases(m66592->lock)
-__acquires(m66592->lock)
-{
- m66592_bclr(m66592, M66592_CTRE, M66592_INTENB0);
- m66592_bclr(m66592, M66592_WDST | M66592_RDST | M66592_CMPL,
- M66592_INTENB0);
- m66592_bclr(m66592, M66592_BEMPE | M66592_BRDYE, M66592_INTENB0);
- m66592_bclr(m66592, M66592_DPRPU, M66592_SYSCFG);
-
- m66592->gadget.speed = USB_SPEED_UNKNOWN;
- spin_unlock(&m66592->lock);
- m66592->driver->disconnect(&m66592->gadget);
- spin_lock(&m66592->lock);
-
- disable_controller(m66592);
- INIT_LIST_HEAD(&m66592->ep[0].queue);
-}
-
-static inline u16 control_reg_get_pid(struct m66592 *m66592, u16 pipenum)
-{
- u16 pid = 0;
- unsigned long offset;
-
- if (pipenum == 0)
- pid = m66592_read(m66592, M66592_DCPCTR) & M66592_PID;
- else if (pipenum < M66592_MAX_NUM_PIPE) {
- offset = get_pipectr_addr(pipenum);
- pid = m66592_read(m66592, offset) & M66592_PID;
- } else
- pr_err("unexpect pipe num (%d)\n", pipenum);
-
- return pid;
-}
-
-static inline void control_reg_set_pid(struct m66592 *m66592, u16 pipenum,
- u16 pid)
-{
- unsigned long offset;
-
- if (pipenum == 0)
- m66592_mdfy(m66592, pid, M66592_PID, M66592_DCPCTR);
- else if (pipenum < M66592_MAX_NUM_PIPE) {
- offset = get_pipectr_addr(pipenum);
- m66592_mdfy(m66592, pid, M66592_PID, offset);
- } else
- pr_err("unexpect pipe num (%d)\n", pipenum);
-}
-
-static inline void pipe_start(struct m66592 *m66592, u16 pipenum)
-{
- control_reg_set_pid(m66592, pipenum, M66592_PID_BUF);
-}
-
-static inline void pipe_stop(struct m66592 *m66592, u16 pipenum)
-{
- control_reg_set_pid(m66592, pipenum, M66592_PID_NAK);
-}
-
-static inline void pipe_stall(struct m66592 *m66592, u16 pipenum)
-{
- control_reg_set_pid(m66592, pipenum, M66592_PID_STALL);
-}
-
-static inline u16 control_reg_get(struct m66592 *m66592, u16 pipenum)
-{
- u16 ret = 0;
- unsigned long offset;
-
- if (pipenum == 0)
- ret = m66592_read(m66592, M66592_DCPCTR);
- else if (pipenum < M66592_MAX_NUM_PIPE) {
- offset = get_pipectr_addr(pipenum);
- ret = m66592_read(m66592, offset);
- } else
- pr_err("unexpect pipe num (%d)\n", pipenum);
-
- return ret;
-}
-
-static inline void control_reg_sqclr(struct m66592 *m66592, u16 pipenum)
-{
- unsigned long offset;
-
- pipe_stop(m66592, pipenum);
-
- if (pipenum == 0)
- m66592_bset(m66592, M66592_SQCLR, M66592_DCPCTR);
- else if (pipenum < M66592_MAX_NUM_PIPE) {
- offset = get_pipectr_addr(pipenum);
- m66592_bset(m66592, M66592_SQCLR, offset);
- } else
- pr_err("unexpect pipe num(%d)\n", pipenum);
-}
-
-static inline int get_buffer_size(struct m66592 *m66592, u16 pipenum)
-{
- u16 tmp;
- int size;
-
- if (pipenum == 0) {
- tmp = m66592_read(m66592, M66592_DCPCFG);
- if ((tmp & M66592_CNTMD) != 0)
- size = 256;
- else {
- tmp = m66592_read(m66592, M66592_DCPMAXP);
- size = tmp & M66592_MAXP;
- }
- } else {
- m66592_write(m66592, pipenum, M66592_PIPESEL);
- tmp = m66592_read(m66592, M66592_PIPECFG);
- if ((tmp & M66592_CNTMD) != 0) {
- tmp = m66592_read(m66592, M66592_PIPEBUF);
- size = ((tmp >> 10) + 1) * 64;
- } else {
- tmp = m66592_read(m66592, M66592_PIPEMAXP);
- size = tmp & M66592_MXPS;
- }
- }
-
- return size;
-}
-
-static inline void pipe_change(struct m66592 *m66592, u16 pipenum)
-{
- struct m66592_ep *ep = m66592->pipenum2ep[pipenum];
- unsigned short mbw;
-
- if (ep->use_dma)
- return;
-
- m66592_mdfy(m66592, pipenum, M66592_CURPIPE, ep->fifosel);
-
- ndelay(450);
-
- if (m66592->pdata->on_chip)
- mbw = M66592_MBW_32;
- else
- mbw = M66592_MBW_16;
-
- m66592_bset(m66592, mbw, ep->fifosel);
-}
-
-static int pipe_buffer_setting(struct m66592 *m66592,
- struct m66592_pipe_info *info)
-{
- u16 bufnum = 0, buf_bsize = 0;
- u16 pipecfg = 0;
-
- if (info->pipe == 0)
- return -EINVAL;
-
- m66592_write(m66592, info->pipe, M66592_PIPESEL);
-
- if (info->dir_in)
- pipecfg |= M66592_DIR;
- pipecfg |= info->type;
- pipecfg |= info->epnum;
- switch (info->type) {
- case M66592_INT:
- bufnum = 4 + (info->pipe - M66592_BASE_PIPENUM_INT);
- buf_bsize = 0;
- break;
- case M66592_BULK:
- /* isochronous pipes may be used as bulk pipes */
- if (info->pipe >= M66592_BASE_PIPENUM_BULK)
- bufnum = info->pipe - M66592_BASE_PIPENUM_BULK;
- else
- bufnum = info->pipe - M66592_BASE_PIPENUM_ISOC;
-
- bufnum = M66592_BASE_BUFNUM + (bufnum * 16);
- buf_bsize = 7;
- pipecfg |= M66592_DBLB;
- if (!info->dir_in)
- pipecfg |= M66592_SHTNAK;
- break;
- case M66592_ISO:
- bufnum = M66592_BASE_BUFNUM +
- (info->pipe - M66592_BASE_PIPENUM_ISOC) * 16;
- buf_bsize = 7;
- break;
- }
-
- if (buf_bsize && ((bufnum + 16) >= M66592_MAX_BUFNUM)) {
- pr_err("m66592 pipe memory is insufficient\n");
- return -ENOMEM;
- }
-
- m66592_write(m66592, pipecfg, M66592_PIPECFG);
- m66592_write(m66592, (buf_bsize << 10) | (bufnum), M66592_PIPEBUF);
- m66592_write(m66592, info->maxpacket, M66592_PIPEMAXP);
- if (info->interval)
- info->interval--;
- m66592_write(m66592, info->interval, M66592_PIPEPERI);
-
- return 0;
-}
-
-static void pipe_buffer_release(struct m66592 *m66592,
- struct m66592_pipe_info *info)
-{
- if (info->pipe == 0)
- return;
-
- if (is_bulk_pipe(info->pipe)) {
- m66592->bulk--;
- } else if (is_interrupt_pipe(info->pipe))
- m66592->interrupt--;
- else if (is_isoc_pipe(info->pipe)) {
- m66592->isochronous--;
- if (info->type == M66592_BULK)
- m66592->bulk--;
- } else
- pr_err("ep_release: unexpect pipenum (%d)\n",
- info->pipe);
-}
-
-static void pipe_initialize(struct m66592_ep *ep)
-{
- struct m66592 *m66592 = ep->m66592;
- unsigned short mbw;
-
- m66592_mdfy(m66592, 0, M66592_CURPIPE, ep->fifosel);
-
- m66592_write(m66592, M66592_ACLRM, ep->pipectr);
- m66592_write(m66592, 0, ep->pipectr);
- m66592_write(m66592, M66592_SQCLR, ep->pipectr);
- if (ep->use_dma) {
- m66592_mdfy(m66592, ep->pipenum, M66592_CURPIPE, ep->fifosel);
-
- ndelay(450);
-
- if (m66592->pdata->on_chip)
- mbw = M66592_MBW_32;
- else
- mbw = M66592_MBW_16;
-
- m66592_bset(m66592, mbw, ep->fifosel);
- }
-}
-
-static void m66592_ep_setting(struct m66592 *m66592, struct m66592_ep *ep,
- const struct usb_endpoint_descriptor *desc,
- u16 pipenum, int dma)
-{
- if ((pipenum != 0) && dma) {
- if (m66592->num_dma == 0) {
- m66592->num_dma++;
- ep->use_dma = 1;
- ep->fifoaddr = M66592_D0FIFO;
- ep->fifosel = M66592_D0FIFOSEL;
- ep->fifoctr = M66592_D0FIFOCTR;
- ep->fifotrn = M66592_D0FIFOTRN;
- } else if (!m66592->pdata->on_chip && m66592->num_dma == 1) {
- m66592->num_dma++;
- ep->use_dma = 1;
- ep->fifoaddr = M66592_D1FIFO;
- ep->fifosel = M66592_D1FIFOSEL;
- ep->fifoctr = M66592_D1FIFOCTR;
- ep->fifotrn = M66592_D1FIFOTRN;
- } else {
- ep->use_dma = 0;
- ep->fifoaddr = M66592_CFIFO;
- ep->fifosel = M66592_CFIFOSEL;
- ep->fifoctr = M66592_CFIFOCTR;
- ep->fifotrn = 0;
- }
- } else {
- ep->use_dma = 0;
- ep->fifoaddr = M66592_CFIFO;
- ep->fifosel = M66592_CFIFOSEL;
- ep->fifoctr = M66592_CFIFOCTR;
- ep->fifotrn = 0;
- }
-
- ep->pipectr = get_pipectr_addr(pipenum);
- ep->pipenum = pipenum;
- ep->ep.maxpacket = usb_endpoint_maxp(desc);
- m66592->pipenum2ep[pipenum] = ep;
- m66592->epaddr2ep[desc->bEndpointAddress&USB_ENDPOINT_NUMBER_MASK] = ep;
- INIT_LIST_HEAD(&ep->queue);
-}
-
-static void m66592_ep_release(struct m66592_ep *ep)
-{
- struct m66592 *m66592 = ep->m66592;
- u16 pipenum = ep->pipenum;
-
- if (pipenum == 0)
- return;
-
- if (ep->use_dma)
- m66592->num_dma--;
- ep->pipenum = 0;
- ep->busy = 0;
- ep->use_dma = 0;
-}
-
-static int alloc_pipe_config(struct m66592_ep *ep,
- const struct usb_endpoint_descriptor *desc)
-{
- struct m66592 *m66592 = ep->m66592;
- struct m66592_pipe_info info;
- int dma = 0;
- int *counter;
- int ret;
-
- ep->ep.desc = desc;
-
- BUG_ON(ep->pipenum);
-
- switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
- case USB_ENDPOINT_XFER_BULK:
- if (m66592->bulk >= M66592_MAX_NUM_BULK) {
- if (m66592->isochronous >= M66592_MAX_NUM_ISOC) {
- pr_err("bulk pipe is insufficient\n");
- return -ENODEV;
- } else {
- info.pipe = M66592_BASE_PIPENUM_ISOC
- + m66592->isochronous;
- counter = &m66592->isochronous;
- }
- } else {
- info.pipe = M66592_BASE_PIPENUM_BULK + m66592->bulk;
- counter = &m66592->bulk;
- }
- info.type = M66592_BULK;
- dma = 1;
- break;
- case USB_ENDPOINT_XFER_INT:
- if (m66592->interrupt >= M66592_MAX_NUM_INT) {
- pr_err("interrupt pipe is insufficient\n");
- return -ENODEV;
- }
- info.pipe = M66592_BASE_PIPENUM_INT + m66592->interrupt;
- info.type = M66592_INT;
- counter = &m66592->interrupt;
- break;
- case USB_ENDPOINT_XFER_ISOC:
- if (m66592->isochronous >= M66592_MAX_NUM_ISOC) {
- pr_err("isochronous pipe is insufficient\n");
- return -ENODEV;
- }
- info.pipe = M66592_BASE_PIPENUM_ISOC + m66592->isochronous;
- info.type = M66592_ISO;
- counter = &m66592->isochronous;
- break;
- default:
- pr_err("unexpect xfer type\n");
- return -EINVAL;
- }
- ep->type = info.type;
-
- info.epnum = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
- info.maxpacket = usb_endpoint_maxp(desc);
- info.interval = desc->bInterval;
- if (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
- info.dir_in = 1;
- else
- info.dir_in = 0;
-
- ret = pipe_buffer_setting(m66592, &info);
- if (ret < 0) {
- pr_err("pipe_buffer_setting fail\n");
- return ret;
- }
-
- (*counter)++;
- if ((counter == &m66592->isochronous) && info.type == M66592_BULK)
- m66592->bulk++;
-
- m66592_ep_setting(m66592, ep, desc, info.pipe, dma);
- pipe_initialize(ep);
-
- return 0;
-}
-
-static int free_pipe_config(struct m66592_ep *ep)
-{
- struct m66592 *m66592 = ep->m66592;
- struct m66592_pipe_info info;
-
- info.pipe = ep->pipenum;
- info.type = ep->type;
- pipe_buffer_release(m66592, &info);
- m66592_ep_release(ep);
-
- return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-static void pipe_irq_enable(struct m66592 *m66592, u16 pipenum)
-{
- enable_irq_ready(m66592, pipenum);
- enable_irq_nrdy(m66592, pipenum);
-}
-
-static void pipe_irq_disable(struct m66592 *m66592, u16 pipenum)
-{
- disable_irq_ready(m66592, pipenum);
- disable_irq_nrdy(m66592, pipenum);
-}
-
-/* if complete is true, gadget driver complete function is not call */
-static void control_end(struct m66592 *m66592, unsigned ccpl)
-{
- m66592->ep[0].internal_ccpl = ccpl;
- pipe_start(m66592, 0);
- m66592_bset(m66592, M66592_CCPL, M66592_DCPCTR);
-}
-
-static void start_ep0_write(struct m66592_ep *ep, struct m66592_request *req)
-{
- struct m66592 *m66592 = ep->m66592;
-
- pipe_change(m66592, ep->pipenum);
- m66592_mdfy(m66592, M66592_ISEL | M66592_PIPE0,
- (M66592_ISEL | M66592_CURPIPE),
- M66592_CFIFOSEL);
- m66592_write(m66592, M66592_BCLR, ep->fifoctr);
- if (req->req.length == 0) {
- m66592_bset(m66592, M66592_BVAL, ep->fifoctr);
- pipe_start(m66592, 0);
- transfer_complete(ep, req, 0);
- } else {
- m66592_write(m66592, ~M66592_BEMP0, M66592_BEMPSTS);
- irq_ep0_write(ep, req);
- }
-}
-
-static void start_packet_write(struct m66592_ep *ep, struct m66592_request *req)
-{
- struct m66592 *m66592 = ep->m66592;
- u16 tmp;
-
- pipe_change(m66592, ep->pipenum);
- disable_irq_empty(m66592, ep->pipenum);
- pipe_start(m66592, ep->pipenum);
-
- tmp = m66592_read(m66592, ep->fifoctr);
- if (unlikely((tmp & M66592_FRDY) == 0))
- pipe_irq_enable(m66592, ep->pipenum);
- else
- irq_packet_write(ep, req);
-}
-
-static void start_packet_read(struct m66592_ep *ep, struct m66592_request *req)
-{
- struct m66592 *m66592 = ep->m66592;
- u16 pipenum = ep->pipenum;
-
- if (ep->pipenum == 0) {
- m66592_mdfy(m66592, M66592_PIPE0,
- (M66592_ISEL | M66592_CURPIPE),
- M66592_CFIFOSEL);
- m66592_write(m66592, M66592_BCLR, ep->fifoctr);
- pipe_start(m66592, pipenum);
- pipe_irq_enable(m66592, pipenum);
- } else {
- if (ep->use_dma) {
- m66592_bset(m66592, M66592_TRCLR, ep->fifosel);
- pipe_change(m66592, pipenum);
- m66592_bset(m66592, M66592_TRENB, ep->fifosel);
- m66592_write(m66592,
- (req->req.length + ep->ep.maxpacket - 1)
- / ep->ep.maxpacket,
- ep->fifotrn);
- }
- pipe_start(m66592, pipenum); /* trigger once */
- pipe_irq_enable(m66592, pipenum);
- }
-}
-
-static void start_packet(struct m66592_ep *ep, struct m66592_request *req)
-{
- if (ep->ep.desc->bEndpointAddress & USB_DIR_IN)
- start_packet_write(ep, req);
- else
- start_packet_read(ep, req);
-}
-
-static void start_ep0(struct m66592_ep *ep, struct m66592_request *req)
-{
- u16 ctsq;
-
- ctsq = m66592_read(ep->m66592, M66592_INTSTS0) & M66592_CTSQ;
-
- switch (ctsq) {
- case M66592_CS_RDDS:
- start_ep0_write(ep, req);
- break;
- case M66592_CS_WRDS:
- start_packet_read(ep, req);
- break;
-
- case M66592_CS_WRND:
- control_end(ep->m66592, 0);
- break;
- default:
- pr_err("start_ep0: unexpect ctsq(%x)\n", ctsq);
- break;
- }
-}
-
-static void init_controller(struct m66592 *m66592)
-{
- unsigned int endian;
-
- if (m66592->pdata->on_chip) {
- if (m66592->pdata->endian)
- endian = 0; /* big endian */
- else
- endian = M66592_LITTLE; /* little endian */
-
- m66592_bset(m66592, M66592_HSE, M66592_SYSCFG); /* High spd */
- m66592_bclr(m66592, M66592_USBE, M66592_SYSCFG);
- m66592_bclr(m66592, M66592_DPRPU, M66592_SYSCFG);
- m66592_bset(m66592, M66592_USBE, M66592_SYSCFG);
-
- /* This is a workaound for SH7722 2nd cut */
- m66592_bset(m66592, 0x8000, M66592_DVSTCTR);
- m66592_bset(m66592, 0x1000, M66592_TESTMODE);
- m66592_bclr(m66592, 0x8000, M66592_DVSTCTR);
-
- m66592_bset(m66592, M66592_INTL, M66592_INTENB1);
-
- m66592_write(m66592, 0, M66592_CFBCFG);
- m66592_write(m66592, 0, M66592_D0FBCFG);
- m66592_bset(m66592, endian, M66592_CFBCFG);
- m66592_bset(m66592, endian, M66592_D0FBCFG);
- } else {
- unsigned int clock, vif, irq_sense;
-
- if (m66592->pdata->endian)
- endian = M66592_BIGEND; /* big endian */
- else
- endian = 0; /* little endian */
-
- if (m66592->pdata->vif)
- vif = M66592_LDRV; /* 3.3v */
- else
- vif = 0; /* 1.5v */
-
- switch (m66592->pdata->xtal) {
- case M66592_PLATDATA_XTAL_12MHZ:
- clock = M66592_XTAL12;
- break;
- case M66592_PLATDATA_XTAL_24MHZ:
- clock = M66592_XTAL24;
- break;
- case M66592_PLATDATA_XTAL_48MHZ:
- clock = M66592_XTAL48;
- break;
- default:
- pr_warning("m66592-udc: xtal configuration error\n");
- clock = 0;
- }
-
- switch (m66592->irq_trigger) {
- case IRQF_TRIGGER_LOW:
- irq_sense = M66592_INTL;
- break;
- case IRQF_TRIGGER_FALLING:
- irq_sense = 0;
- break;
- default:
- pr_warning("m66592-udc: irq trigger config error\n");
- irq_sense = 0;
- }
-
- m66592_bset(m66592,
- (vif & M66592_LDRV) | (endian & M66592_BIGEND),
- M66592_PINCFG);
- m66592_bset(m66592, M66592_HSE, M66592_SYSCFG); /* High spd */
- m66592_mdfy(m66592, clock & M66592_XTAL, M66592_XTAL,
- M66592_SYSCFG);
- m66592_bclr(m66592, M66592_USBE, M66592_SYSCFG);
- m66592_bclr(m66592, M66592_DPRPU, M66592_SYSCFG);
- m66592_bset(m66592, M66592_USBE, M66592_SYSCFG);
-
- m66592_bset(m66592, M66592_XCKE, M66592_SYSCFG);
-
- msleep(3);
-
- m66592_bset(m66592, M66592_RCKE | M66592_PLLC, M66592_SYSCFG);
-
- msleep(1);
-
- m66592_bset(m66592, M66592_SCKE, M66592_SYSCFG);
-
- m66592_bset(m66592, irq_sense & M66592_INTL, M66592_INTENB1);
- m66592_write(m66592, M66592_BURST | M66592_CPU_ADR_RD_WR,
- M66592_DMA0CFG);
- }
-}
-
-static void disable_controller(struct m66592 *m66592)
-{
- m66592_bclr(m66592, M66592_UTST, M66592_TESTMODE);
- if (!m66592->pdata->on_chip) {
- m66592_bclr(m66592, M66592_SCKE, M66592_SYSCFG);
- udelay(1);
- m66592_bclr(m66592, M66592_PLLC, M66592_SYSCFG);
- udelay(1);
- m66592_bclr(m66592, M66592_RCKE, M66592_SYSCFG);
- udelay(1);
- m66592_bclr(m66592, M66592_XCKE, M66592_SYSCFG);
- }
-}
-
-static void m66592_start_xclock(struct m66592 *m66592)
-{
- u16 tmp;
-
- if (!m66592->pdata->on_chip) {
- tmp = m66592_read(m66592, M66592_SYSCFG);
- if (!(tmp & M66592_XCKE))
- m66592_bset(m66592, M66592_XCKE, M66592_SYSCFG);
- }
-}
-
-/*-------------------------------------------------------------------------*/
-static void transfer_complete(struct m66592_ep *ep,
- struct m66592_request *req, int status)
-__releases(m66592->lock)
-__acquires(m66592->lock)
-{
- int restart = 0;
-
- if (unlikely(ep->pipenum == 0)) {
- if (ep->internal_ccpl) {
- ep->internal_ccpl = 0;
- return;
- }
- }
-
- list_del_init(&req->queue);
- if (ep->m66592->gadget.speed == USB_SPEED_UNKNOWN)
- req->req.status = -ESHUTDOWN;
- else
- req->req.status = status;
-
- if (!list_empty(&ep->queue))
- restart = 1;
-
- spin_unlock(&ep->m66592->lock);
- req->req.complete(&ep->ep, &req->req);
- spin_lock(&ep->m66592->lock);
-
- if (restart) {
- req = list_entry(ep->queue.next, struct m66592_request, queue);
- if (ep->ep.desc)
- start_packet(ep, req);
- }
-}
-
-static void irq_ep0_write(struct m66592_ep *ep, struct m66592_request *req)
-{
- int i;
- u16 tmp;
- unsigned bufsize;
- size_t size;
- void *buf;
- u16 pipenum = ep->pipenum;
- struct m66592 *m66592 = ep->m66592;
-
- pipe_change(m66592, pipenum);
- m66592_bset(m66592, M66592_ISEL, ep->fifosel);
-
- i = 0;
- do {
- tmp = m66592_read(m66592, ep->fifoctr);
- if (i++ > 100000) {
- pr_err("pipe0 is busy. maybe cpu i/o bus "
- "conflict. please power off this controller.");
- return;
- }
- ndelay(1);
- } while ((tmp & M66592_FRDY) == 0);
-
- /* prepare parameters */
- bufsize = get_buffer_size(m66592, pipenum);
- buf = req->req.buf + req->req.actual;
- size = min(bufsize, req->req.length - req->req.actual);
-
- /* write fifo */
- if (req->req.buf) {
- if (size > 0)
- m66592_write_fifo(m66592, ep, buf, size);
- if ((size == 0) || ((size % ep->ep.maxpacket) != 0))
- m66592_bset(m66592, M66592_BVAL, ep->fifoctr);
- }
-
- /* update parameters */
- req->req.actual += size;
-
- /* check transfer finish */
- if ((!req->req.zero && (req->req.actual == req->req.length))
- || (size % ep->ep.maxpacket)
- || (size == 0)) {
- disable_irq_ready(m66592, pipenum);
- disable_irq_empty(m66592, pipenum);
- } else {
- disable_irq_ready(m66592, pipenum);
- enable_irq_empty(m66592, pipenum);
- }
- pipe_start(m66592, pipenum);
-}
-
-static void irq_packet_write(struct m66592_ep *ep, struct m66592_request *req)
-{
- u16 tmp;
- unsigned bufsize;
- size_t size;
- void *buf;
- u16 pipenum = ep->pipenum;
- struct m66592 *m66592 = ep->m66592;
-
- pipe_change(m66592, pipenum);
- tmp = m66592_read(m66592, ep->fifoctr);
- if (unlikely((tmp & M66592_FRDY) == 0)) {
- pipe_stop(m66592, pipenum);
- pipe_irq_disable(m66592, pipenum);
- pr_err("write fifo not ready. pipnum=%d\n", pipenum);
- return;
- }
-
- /* prepare parameters */
- bufsize = get_buffer_size(m66592, pipenum);
- buf = req->req.buf + req->req.actual;
- size = min(bufsize, req->req.length - req->req.actual);
-
- /* write fifo */
- if (req->req.buf) {
- m66592_write_fifo(m66592, ep, buf, size);
- if ((size == 0)
- || ((size % ep->ep.maxpacket) != 0)
- || ((bufsize != ep->ep.maxpacket)
- && (bufsize > size)))
- m66592_bset(m66592, M66592_BVAL, ep->fifoctr);
- }
-
- /* update parameters */
- req->req.actual += size;
- /* check transfer finish */
- if ((!req->req.zero && (req->req.actual == req->req.length))
- || (size % ep->ep.maxpacket)
- || (size == 0)) {
- disable_irq_ready(m66592, pipenum);
- enable_irq_empty(m66592, pipenum);
- } else {
- disable_irq_empty(m66592, pipenum);
- pipe_irq_enable(m66592, pipenum);
- }
-}
-
-static void irq_packet_read(struct m66592_ep *ep, struct m66592_request *req)
-{
- u16 tmp;
- int rcv_len, bufsize, req_len;
- int size;
- void *buf;
- u16 pipenum = ep->pipenum;
- struct m66592 *m66592 = ep->m66592;
- int finish = 0;
-
- pipe_change(m66592, pipenum);
- tmp = m66592_read(m66592, ep->fifoctr);
- if (unlikely((tmp & M66592_FRDY) == 0)) {
- req->req.status = -EPIPE;
- pipe_stop(m66592, pipenum);
- pipe_irq_disable(m66592, pipenum);
- pr_err("read fifo not ready");
- return;
- }
-
- /* prepare parameters */
- rcv_len = tmp & M66592_DTLN;
- bufsize = get_buffer_size(m66592, pipenum);
-
- buf = req->req.buf + req->req.actual;
- req_len = req->req.length - req->req.actual;
- if (rcv_len < bufsize)
- size = min(rcv_len, req_len);
- else
- size = min(bufsize, req_len);
-
- /* update parameters */
- req->req.actual += size;
-
- /* check transfer finish */
- if ((!req->req.zero && (req->req.actual == req->req.length))
- || (size % ep->ep.maxpacket)
- || (size == 0)) {
- pipe_stop(m66592, pipenum);
- pipe_irq_disable(m66592, pipenum);
- finish = 1;
- }
-
- /* read fifo */
- if (req->req.buf) {
- if (size == 0)
- m66592_write(m66592, M66592_BCLR, ep->fifoctr);
- else
- m66592_read_fifo(m66592, ep->fifoaddr, buf, size);
- }
-
- if ((ep->pipenum != 0) && finish)
- transfer_complete(ep, req, 0);
-}
-
-static void irq_pipe_ready(struct m66592 *m66592, u16 status, u16 enb)
-{
- u16 check;
- u16 pipenum;
- struct m66592_ep *ep;
- struct m66592_request *req;
-
- if ((status & M66592_BRDY0) && (enb & M66592_BRDY0)) {
- m66592_write(m66592, ~M66592_BRDY0, M66592_BRDYSTS);
- m66592_mdfy(m66592, M66592_PIPE0, M66592_CURPIPE,
- M66592_CFIFOSEL);
-
- ep = &m66592->ep[0];
- req = list_entry(ep->queue.next, struct m66592_request, queue);
- irq_packet_read(ep, req);
- } else {
- for (pipenum = 1; pipenum < M66592_MAX_NUM_PIPE; pipenum++) {
- check = 1 << pipenum;
- if ((status & check) && (enb & check)) {
- m66592_write(m66592, ~check, M66592_BRDYSTS);
- ep = m66592->pipenum2ep[pipenum];
- req = list_entry(ep->queue.next,
- struct m66592_request, queue);
- if (ep->ep.desc->bEndpointAddress & USB_DIR_IN)
- irq_packet_write(ep, req);
- else
- irq_packet_read(ep, req);
- }
- }
- }
-}
-
-static void irq_pipe_empty(struct m66592 *m66592, u16 status, u16 enb)
-{
- u16 tmp;
- u16 check;
- u16 pipenum;
- struct m66592_ep *ep;
- struct m66592_request *req;
-
- if ((status & M66592_BEMP0) && (enb & M66592_BEMP0)) {
- m66592_write(m66592, ~M66592_BEMP0, M66592_BEMPSTS);
-
- ep = &m66592->ep[0];
- req = list_entry(ep->queue.next, struct m66592_request, queue);
- irq_ep0_write(ep, req);
- } else {
- for (pipenum = 1; pipenum < M66592_MAX_NUM_PIPE; pipenum++) {
- check = 1 << pipenum;
- if ((status & check) && (enb & check)) {
- m66592_write(m66592, ~check, M66592_BEMPSTS);
- tmp = control_reg_get(m66592, pipenum);
- if ((tmp & M66592_INBUFM) == 0) {
- disable_irq_empty(m66592, pipenum);
- pipe_irq_disable(m66592, pipenum);
- pipe_stop(m66592, pipenum);
- ep = m66592->pipenum2ep[pipenum];
- req = list_entry(ep->queue.next,
- struct m66592_request,
- queue);
- if (!list_empty(&ep->queue))
- transfer_complete(ep, req, 0);
- }
- }
- }
- }
-}
-
-static void get_status(struct m66592 *m66592, struct usb_ctrlrequest *ctrl)
-__releases(m66592->lock)
-__acquires(m66592->lock)
-{
- struct m66592_ep *ep;
- u16 pid;
- u16 status = 0;
- u16 w_index = le16_to_cpu(ctrl->wIndex);
-
- switch (ctrl->bRequestType & USB_RECIP_MASK) {
- case USB_RECIP_DEVICE:
- status = 1 << USB_DEVICE_SELF_POWERED;
- break;
- case USB_RECIP_INTERFACE:
- status = 0;
- break;
- case USB_RECIP_ENDPOINT:
- ep = m66592->epaddr2ep[w_index & USB_ENDPOINT_NUMBER_MASK];
- pid = control_reg_get_pid(m66592, ep->pipenum);
- if (pid == M66592_PID_STALL)
- status = 1 << USB_ENDPOINT_HALT;
- else
- status = 0;
- break;
- default:
- pipe_stall(m66592, 0);
- return; /* exit */
- }
-
- m66592->ep0_data = cpu_to_le16(status);
- m66592->ep0_req->buf = &m66592->ep0_data;
- m66592->ep0_req->length = 2;
- /* AV: what happens if we get called again before that gets through? */
- spin_unlock(&m66592->lock);
- m66592_queue(m66592->gadget.ep0, m66592->ep0_req, GFP_KERNEL);
- spin_lock(&m66592->lock);
-}
-
-static void clear_feature(struct m66592 *m66592, struct usb_ctrlrequest *ctrl)
-{
- switch (ctrl->bRequestType & USB_RECIP_MASK) {
- case USB_RECIP_DEVICE:
- control_end(m66592, 1);
- break;
- case USB_RECIP_INTERFACE:
- control_end(m66592, 1);
- break;
- case USB_RECIP_ENDPOINT: {
- struct m66592_ep *ep;
- struct m66592_request *req;
- u16 w_index = le16_to_cpu(ctrl->wIndex);
-
- ep = m66592->epaddr2ep[w_index & USB_ENDPOINT_NUMBER_MASK];
- pipe_stop(m66592, ep->pipenum);
- control_reg_sqclr(m66592, ep->pipenum);
-
- control_end(m66592, 1);
-
- req = list_entry(ep->queue.next,
- struct m66592_request, queue);
- if (ep->busy) {
- ep->busy = 0;
- if (list_empty(&ep->queue))
- break;
- start_packet(ep, req);
- } else if (!list_empty(&ep->queue))
- pipe_start(m66592, ep->pipenum);
- }
- break;
- default:
- pipe_stall(m66592, 0);
- break;
- }
-}
-
-static void set_feature(struct m66592 *m66592, struct usb_ctrlrequest *ctrl)
-{
- u16 tmp;
- int timeout = 3000;
-
- switch (ctrl->bRequestType & USB_RECIP_MASK) {
- case USB_RECIP_DEVICE:
- switch (le16_to_cpu(ctrl->wValue)) {
- case USB_DEVICE_TEST_MODE:
- control_end(m66592, 1);
- /* Wait for the completion of status stage */
- do {
- tmp = m66592_read(m66592, M66592_INTSTS0) &
- M66592_CTSQ;
- udelay(1);
- } while (tmp != M66592_CS_IDST || timeout-- > 0);
-
- if (tmp == M66592_CS_IDST)
- m66592_bset(m66592,
- le16_to_cpu(ctrl->wIndex >> 8),
- M66592_TESTMODE);
- break;
- default:
- pipe_stall(m66592, 0);
- break;
- }
- break;
- case USB_RECIP_INTERFACE:
- control_end(m66592, 1);
- break;
- case USB_RECIP_ENDPOINT: {
- struct m66592_ep *ep;
- u16 w_index = le16_to_cpu(ctrl->wIndex);
-
- ep = m66592->epaddr2ep[w_index & USB_ENDPOINT_NUMBER_MASK];
- pipe_stall(m66592, ep->pipenum);
-
- control_end(m66592, 1);
- }
- break;
- default:
- pipe_stall(m66592, 0);
- break;
- }
-}
-
-/* if return value is true, call class driver's setup() */
-static int setup_packet(struct m66592 *m66592, struct usb_ctrlrequest *ctrl)
-{
- u16 *p = (u16 *)ctrl;
- unsigned long offset = M66592_USBREQ;
- int i, ret = 0;
-
- /* read fifo */
- m66592_write(m66592, ~M66592_VALID, M66592_INTSTS0);
-
- for (i = 0; i < 4; i++)
- p[i] = m66592_read(m66592, offset + i*2);
-
- /* check request */
- if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) {
- switch (ctrl->bRequest) {
- case USB_REQ_GET_STATUS:
- get_status(m66592, ctrl);
- break;
- case USB_REQ_CLEAR_FEATURE:
- clear_feature(m66592, ctrl);
- break;
- case USB_REQ_SET_FEATURE:
- set_feature(m66592, ctrl);
- break;
- default:
- ret = 1;
- break;
- }
- } else
- ret = 1;
- return ret;
-}
-
-static void m66592_update_usb_speed(struct m66592 *m66592)
-{
- u16 speed = get_usb_speed(m66592);
-
- switch (speed) {
- case M66592_HSMODE:
- m66592->gadget.speed = USB_SPEED_HIGH;
- break;
- case M66592_FSMODE:
- m66592->gadget.speed = USB_SPEED_FULL;
- break;
- default:
- m66592->gadget.speed = USB_SPEED_UNKNOWN;
- pr_err("USB speed unknown\n");
- }
-}
-
-static void irq_device_state(struct m66592 *m66592)
-{
- u16 dvsq;
-
- dvsq = m66592_read(m66592, M66592_INTSTS0) & M66592_DVSQ;
- m66592_write(m66592, ~M66592_DVST, M66592_INTSTS0);
-
- if (dvsq == M66592_DS_DFLT) { /* bus reset */
- m66592->driver->disconnect(&m66592->gadget);
- m66592_update_usb_speed(m66592);
- }
- if (m66592->old_dvsq == M66592_DS_CNFG && dvsq != M66592_DS_CNFG)
- m66592_update_usb_speed(m66592);
- if ((dvsq == M66592_DS_CNFG || dvsq == M66592_DS_ADDS)
- && m66592->gadget.speed == USB_SPEED_UNKNOWN)
- m66592_update_usb_speed(m66592);
-
- m66592->old_dvsq = dvsq;
-}
-
-static void irq_control_stage(struct m66592 *m66592)
-__releases(m66592->lock)
-__acquires(m66592->lock)
-{
- struct usb_ctrlrequest ctrl;
- u16 ctsq;
-
- ctsq = m66592_read(m66592, M66592_INTSTS0) & M66592_CTSQ;
- m66592_write(m66592, ~M66592_CTRT, M66592_INTSTS0);
-
- switch (ctsq) {
- case M66592_CS_IDST: {
- struct m66592_ep *ep;
- struct m66592_request *req;
- ep = &m66592->ep[0];
- req = list_entry(ep->queue.next, struct m66592_request, queue);
- transfer_complete(ep, req, 0);
- }
- break;
-
- case M66592_CS_RDDS:
- case M66592_CS_WRDS:
- case M66592_CS_WRND:
- if (setup_packet(m66592, &ctrl)) {
- spin_unlock(&m66592->lock);
- if (m66592->driver->setup(&m66592->gadget, &ctrl) < 0)
- pipe_stall(m66592, 0);
- spin_lock(&m66592->lock);
- }
- break;
- case M66592_CS_RDSS:
- case M66592_CS_WRSS:
- control_end(m66592, 0);
- break;
- default:
- pr_err("ctrl_stage: unexpect ctsq(%x)\n", ctsq);
- break;
- }
-}
-
-static irqreturn_t m66592_irq(int irq, void *_m66592)
-{
- struct m66592 *m66592 = _m66592;
- u16 intsts0;
- u16 intenb0;
- u16 brdysts, nrdysts, bempsts;
- u16 brdyenb, nrdyenb, bempenb;
- u16 savepipe;
- u16 mask0;
-
- spin_lock(&m66592->lock);
-
- intsts0 = m66592_read(m66592, M66592_INTSTS0);
- intenb0 = m66592_read(m66592, M66592_INTENB0);
-
- if (m66592->pdata->on_chip && !intsts0 && !intenb0) {
- /*
- * When USB clock stops, it cannot read register. Even if a
- * clock stops, the interrupt occurs. So this driver turn on
- * a clock by this timing and do re-reading of register.
- */
- m66592_start_xclock(m66592);
- intsts0 = m66592_read(m66592, M66592_INTSTS0);
- intenb0 = m66592_read(m66592, M66592_INTENB0);
- }
-
- savepipe = m66592_read(m66592, M66592_CFIFOSEL);
-
- mask0 = intsts0 & intenb0;
- if (mask0) {
- brdysts = m66592_read(m66592, M66592_BRDYSTS);
- nrdysts = m66592_read(m66592, M66592_NRDYSTS);
- bempsts = m66592_read(m66592, M66592_BEMPSTS);
- brdyenb = m66592_read(m66592, M66592_BRDYENB);
- nrdyenb = m66592_read(m66592, M66592_NRDYENB);
- bempenb = m66592_read(m66592, M66592_BEMPENB);
-
- if (mask0 & M66592_VBINT) {
- m66592_write(m66592, 0xffff & ~M66592_VBINT,
- M66592_INTSTS0);
- m66592_start_xclock(m66592);
-
- /* start vbus sampling */
- m66592->old_vbus = m66592_read(m66592, M66592_INTSTS0)
- & M66592_VBSTS;
- m66592->scount = M66592_MAX_SAMPLING;
-
- mod_timer(&m66592->timer,
- jiffies + msecs_to_jiffies(50));
- }
- if (intsts0 & M66592_DVSQ)
- irq_device_state(m66592);
-
- if ((intsts0 & M66592_BRDY) && (intenb0 & M66592_BRDYE)
- && (brdysts & brdyenb)) {
- irq_pipe_ready(m66592, brdysts, brdyenb);
- }
- if ((intsts0 & M66592_BEMP) && (intenb0 & M66592_BEMPE)
- && (bempsts & bempenb)) {
- irq_pipe_empty(m66592, bempsts, bempenb);
- }
-
- if (intsts0 & M66592_CTRT)
- irq_control_stage(m66592);
- }
-
- m66592_write(m66592, savepipe, M66592_CFIFOSEL);
-
- spin_unlock(&m66592->lock);
- return IRQ_HANDLED;
-}
-
-static void m66592_timer(unsigned long _m66592)
-{
- struct m66592 *m66592 = (struct m66592 *)_m66592;
- unsigned long flags;
- u16 tmp;
-
- spin_lock_irqsave(&m66592->lock, flags);
- tmp = m66592_read(m66592, M66592_SYSCFG);
- if (!(tmp & M66592_RCKE)) {
- m66592_bset(m66592, M66592_RCKE | M66592_PLLC, M66592_SYSCFG);
- udelay(10);
- m66592_bset(m66592, M66592_SCKE, M66592_SYSCFG);
- }
- if (m66592->scount > 0) {
- tmp = m66592_read(m66592, M66592_INTSTS0) & M66592_VBSTS;
- if (tmp == m66592->old_vbus) {
- m66592->scount--;
- if (m66592->scount == 0) {
- if (tmp == M66592_VBSTS)
- m66592_usb_connect(m66592);
- else
- m66592_usb_disconnect(m66592);
- } else {
- mod_timer(&m66592->timer,
- jiffies + msecs_to_jiffies(50));
- }
- } else {
- m66592->scount = M66592_MAX_SAMPLING;
- m66592->old_vbus = tmp;
- mod_timer(&m66592->timer,
- jiffies + msecs_to_jiffies(50));
- }
- }
- spin_unlock_irqrestore(&m66592->lock, flags);
-}
-
-/*-------------------------------------------------------------------------*/
-static int m66592_enable(struct usb_ep *_ep,
- const struct usb_endpoint_descriptor *desc)
-{
- struct m66592_ep *ep;
-
- ep = container_of(_ep, struct m66592_ep, ep);
- return alloc_pipe_config(ep, desc);
-}
-
-static int m66592_disable(struct usb_ep *_ep)
-{
- struct m66592_ep *ep;
- struct m66592_request *req;
- unsigned long flags;
-
- ep = container_of(_ep, struct m66592_ep, ep);
- BUG_ON(!ep);
-
- while (!list_empty(&ep->queue)) {
- req = list_entry(ep->queue.next, struct m66592_request, queue);
- spin_lock_irqsave(&ep->m66592->lock, flags);
- transfer_complete(ep, req, -ECONNRESET);
- spin_unlock_irqrestore(&ep->m66592->lock, flags);
- }
-
- pipe_irq_disable(ep->m66592, ep->pipenum);
- return free_pipe_config(ep);
-}
-
-static struct usb_request *m66592_alloc_request(struct usb_ep *_ep,
- gfp_t gfp_flags)
-{
- struct m66592_request *req;
-
- req = kzalloc(sizeof(struct m66592_request), gfp_flags);
- if (!req)
- return NULL;
-
- INIT_LIST_HEAD(&req->queue);
-
- return &req->req;
-}
-
-static void m66592_free_request(struct usb_ep *_ep, struct usb_request *_req)
-{
- struct m66592_request *req;
-
- req = container_of(_req, struct m66592_request, req);
- kfree(req);
-}
-
-static int m66592_queue(struct usb_ep *_ep, struct usb_request *_req,
- gfp_t gfp_flags)
-{
- struct m66592_ep *ep;
- struct m66592_request *req;
- unsigned long flags;
- int request = 0;
-
- ep = container_of(_ep, struct m66592_ep, ep);
- req = container_of(_req, struct m66592_request, req);
-
- if (ep->m66592->gadget.speed == USB_SPEED_UNKNOWN)
- return -ESHUTDOWN;
-
- spin_lock_irqsave(&ep->m66592->lock, flags);
-
- if (list_empty(&ep->queue))
- request = 1;
-
- list_add_tail(&req->queue, &ep->queue);
- req->req.actual = 0;
- req->req.status = -EINPROGRESS;
-
- if (ep->ep.desc == NULL) /* control */
- start_ep0(ep, req);
- else {
- if (request && !ep->busy)
- start_packet(ep, req);
- }
-
- spin_unlock_irqrestore(&ep->m66592->lock, flags);
-
- return 0;
-}
-
-static int m66592_dequeue(struct usb_ep *_ep, struct usb_request *_req)
-{
- struct m66592_ep *ep;
- struct m66592_request *req;
- unsigned long flags;
-
- ep = container_of(_ep, struct m66592_ep, ep);
- req = container_of(_req, struct m66592_request, req);
-
- spin_lock_irqsave(&ep->m66592->lock, flags);
- if (!list_empty(&ep->queue))
- transfer_complete(ep, req, -ECONNRESET);
- spin_unlock_irqrestore(&ep->m66592->lock, flags);
-
- return 0;
-}
-
-static int m66592_set_halt(struct usb_ep *_ep, int value)
-{
- struct m66592_ep *ep;
- struct m66592_request *req;
- unsigned long flags;
- int ret = 0;
-
- ep = container_of(_ep, struct m66592_ep, ep);
- req = list_entry(ep->queue.next, struct m66592_request, queue);
-
- spin_lock_irqsave(&ep->m66592->lock, flags);
- if (!list_empty(&ep->queue)) {
- ret = -EAGAIN;
- goto out;
- }
- if (value) {
- ep->busy = 1;
- pipe_stall(ep->m66592, ep->pipenum);
- } else {
- ep->busy = 0;
- pipe_stop(ep->m66592, ep->pipenum);
- }
-
-out:
- spin_unlock_irqrestore(&ep->m66592->lock, flags);
- return ret;
-}
-
-static void m66592_fifo_flush(struct usb_ep *_ep)
-{
- struct m66592_ep *ep;
- unsigned long flags;
-
- ep = container_of(_ep, struct m66592_ep, ep);
- spin_lock_irqsave(&ep->m66592->lock, flags);
- if (list_empty(&ep->queue) && !ep->busy) {
- pipe_stop(ep->m66592, ep->pipenum);
- m66592_bclr(ep->m66592, M66592_BCLR, ep->fifoctr);
- }
- spin_unlock_irqrestore(&ep->m66592->lock, flags);
-}
-
-static struct usb_ep_ops m66592_ep_ops = {
- .enable = m66592_enable,
- .disable = m66592_disable,
-
- .alloc_request = m66592_alloc_request,
- .free_request = m66592_free_request,
-
- .queue = m66592_queue,
- .dequeue = m66592_dequeue,
-
- .set_halt = m66592_set_halt,
- .fifo_flush = m66592_fifo_flush,
-};
-
-/*-------------------------------------------------------------------------*/
-static int m66592_udc_start(struct usb_gadget *g,
- struct usb_gadget_driver *driver)
-{
- struct m66592 *m66592 = to_m66592(g);
-
- /* hook up the driver */
- driver->driver.bus = NULL;
- m66592->driver = driver;
-
- m66592_bset(m66592, M66592_VBSE | M66592_URST, M66592_INTENB0);
- if (m66592_read(m66592, M66592_INTSTS0) & M66592_VBSTS) {
- m66592_start_xclock(m66592);
- /* start vbus sampling */
- m66592->old_vbus = m66592_read(m66592,
- M66592_INTSTS0) & M66592_VBSTS;
- m66592->scount = M66592_MAX_SAMPLING;
- mod_timer(&m66592->timer, jiffies + msecs_to_jiffies(50));
- }
-
- return 0;
-}
-
-static int m66592_udc_stop(struct usb_gadget *g,
- struct usb_gadget_driver *driver)
-{
- struct m66592 *m66592 = to_m66592(g);
-
- m66592_bclr(m66592, M66592_VBSE | M66592_URST, M66592_INTENB0);
-
- init_controller(m66592);
- disable_controller(m66592);
-
- m66592->driver = NULL;
-
- return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-static int m66592_get_frame(struct usb_gadget *_gadget)
-{
- struct m66592 *m66592 = gadget_to_m66592(_gadget);
- return m66592_read(m66592, M66592_FRMNUM) & 0x03FF;
-}
-
-static int m66592_pullup(struct usb_gadget *gadget, int is_on)
-{
- struct m66592 *m66592 = gadget_to_m66592(gadget);
- unsigned long flags;
-
- spin_lock_irqsave(&m66592->lock, flags);
- if (is_on)
- m66592_bset(m66592, M66592_DPRPU, M66592_SYSCFG);
- else
- m66592_bclr(m66592, M66592_DPRPU, M66592_SYSCFG);
- spin_unlock_irqrestore(&m66592->lock, flags);
-
- return 0;
-}
-
-static const struct usb_gadget_ops m66592_gadget_ops = {
- .get_frame = m66592_get_frame,
- .udc_start = m66592_udc_start,
- .udc_stop = m66592_udc_stop,
- .pullup = m66592_pullup,
-};
-
-static int __exit m66592_remove(struct platform_device *pdev)
-{
- struct m66592 *m66592 = platform_get_drvdata(pdev);
-
- usb_del_gadget_udc(&m66592->gadget);
-
- del_timer_sync(&m66592->timer);
- iounmap(m66592->reg);
- free_irq(platform_get_irq(pdev, 0), m66592);
- m66592_free_request(&m66592->ep[0].ep, m66592->ep0_req);
- if (m66592->pdata->on_chip) {
- clk_disable(m66592->clk);
- clk_put(m66592->clk);
- }
- kfree(m66592);
- return 0;
-}
-
-static void nop_completion(struct usb_ep *ep, struct usb_request *r)
-{
-}
-
-static int m66592_probe(struct platform_device *pdev)
-{
- struct resource *res, *ires;
- void __iomem *reg = NULL;
- struct m66592 *m66592 = NULL;
- char clk_name[8];
- int ret = 0;
- int i;
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- ret = -ENODEV;
- pr_err("platform_get_resource error.\n");
- goto clean_up;
- }
-
- ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
- if (!ires) {
- ret = -ENODEV;
- dev_err(&pdev->dev,
- "platform_get_resource IORESOURCE_IRQ error.\n");
- goto clean_up;
- }
-
- reg = ioremap(res->start, resource_size(res));
- if (reg == NULL) {
- ret = -ENOMEM;
- pr_err("ioremap error.\n");
- goto clean_up;
- }
-
- if (dev_get_platdata(&pdev->dev) == NULL) {
- dev_err(&pdev->dev, "no platform data\n");
- ret = -ENODEV;
- goto clean_up;
- }
-
- /* initialize ucd */
- m66592 = kzalloc(sizeof(struct m66592), GFP_KERNEL);
- if (m66592 == NULL) {
- ret = -ENOMEM;
- goto clean_up;
- }
-
- m66592->pdata = dev_get_platdata(&pdev->dev);
- m66592->irq_trigger = ires->flags & IRQF_TRIGGER_MASK;
-
- spin_lock_init(&m66592->lock);
- platform_set_drvdata(pdev, m66592);
-
- m66592->gadget.ops = &m66592_gadget_ops;
- m66592->gadget.max_speed = USB_SPEED_HIGH;
- m66592->gadget.name = udc_name;
-
- init_timer(&m66592->timer);
- m66592->timer.function = m66592_timer;
- m66592->timer.data = (unsigned long)m66592;
- m66592->reg = reg;
-
- ret = request_irq(ires->start, m66592_irq, IRQF_SHARED,
- udc_name, m66592);
- if (ret < 0) {
- pr_err("request_irq error (%d)\n", ret);
- goto clean_up;
- }
-
- if (m66592->pdata->on_chip) {
- snprintf(clk_name, sizeof(clk_name), "usbf%d", pdev->id);
- m66592->clk = clk_get(&pdev->dev, clk_name);
- if (IS_ERR(m66592->clk)) {
- dev_err(&pdev->dev, "cannot get clock \"%s\"\n",
- clk_name);
- ret = PTR_ERR(m66592->clk);
- goto clean_up2;
- }
- clk_enable(m66592->clk);
- }
-
- INIT_LIST_HEAD(&m66592->gadget.ep_list);
- m66592->gadget.ep0 = &m66592->ep[0].ep;
- INIT_LIST_HEAD(&m66592->gadget.ep0->ep_list);
- for (i = 0; i < M66592_MAX_NUM_PIPE; i++) {
- struct m66592_ep *ep = &m66592->ep[i];
-
- if (i != 0) {
- INIT_LIST_HEAD(&m66592->ep[i].ep.ep_list);
- list_add_tail(&m66592->ep[i].ep.ep_list,
- &m66592->gadget.ep_list);
- }
- ep->m66592 = m66592;
- INIT_LIST_HEAD(&ep->queue);
- ep->ep.name = m66592_ep_name[i];
- ep->ep.ops = &m66592_ep_ops;
- usb_ep_set_maxpacket_limit(&ep->ep, 512);
- }
- usb_ep_set_maxpacket_limit(&m66592->ep[0].ep, 64);
- m66592->ep[0].pipenum = 0;
- m66592->ep[0].fifoaddr = M66592_CFIFO;
- m66592->ep[0].fifosel = M66592_CFIFOSEL;
- m66592->ep[0].fifoctr = M66592_CFIFOCTR;
- m66592->ep[0].fifotrn = 0;
- m66592->ep[0].pipectr = get_pipectr_addr(0);
- m66592->pipenum2ep[0] = &m66592->ep[0];
- m66592->epaddr2ep[0] = &m66592->ep[0];
-
- m66592->ep0_req = m66592_alloc_request(&m66592->ep[0].ep, GFP_KERNEL);
- if (m66592->ep0_req == NULL) {
- ret = -ENOMEM;
- goto clean_up3;
- }
- m66592->ep0_req->complete = nop_completion;
-
- init_controller(m66592);
-
- ret = usb_add_gadget_udc(&pdev->dev, &m66592->gadget);
- if (ret)
- goto err_add_udc;
-
- dev_info(&pdev->dev, "version %s\n", DRIVER_VERSION);
- return 0;
-
-err_add_udc:
- m66592_free_request(&m66592->ep[0].ep, m66592->ep0_req);
-
-clean_up3:
- if (m66592->pdata->on_chip) {
- clk_disable(m66592->clk);
- clk_put(m66592->clk);
- }
-clean_up2:
- free_irq(ires->start, m66592);
-clean_up:
- if (m66592) {
- if (m66592->ep0_req)
- m66592_free_request(&m66592->ep[0].ep, m66592->ep0_req);
- kfree(m66592);
- }
- if (reg)
- iounmap(reg);
-
- return ret;
-}
-
-/*-------------------------------------------------------------------------*/
-static struct platform_driver m66592_driver = {
- .remove = __exit_p(m66592_remove),
- .driver = {
- .name = (char *) udc_name,
- .owner = THIS_MODULE,
- },
-};
-
-module_platform_driver_probe(m66592_driver, m66592_probe);