| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Yoshihiro Shimoda | 12070 | 90.34% | 19 | 26.39% |
| Magnus Damm | 413 | 3.09% | 5 | 6.94% |
| Alan Stern | 227 | 1.70% | 8 | 11.11% |
| Greg Kroah-Hartman | 202 | 1.51% | 6 | 8.33% |
| Paul Mundt | 159 | 1.19% | 2 | 2.78% |
| Kees Cook | 86 | 0.64% | 2 | 2.78% |
| Julia Lawall | 32 | 0.24% | 4 | 5.56% |
| Heiner Kallweit | 26 | 0.19% | 2 | 2.78% |
| Jia-Ju Bai | 25 | 0.19% | 1 | 1.39% |
| Marc Zyngier | 23 | 0.17% | 1 | 1.39% |
| Chris Brandt | 18 | 0.13% | 2 | 2.78% |
| Lan Tianyu | 13 | 0.10% | 1 | 1.39% |
| Tobias Klauser | 10 | 0.07% | 1 | 1.39% |
| Peter Chen | 9 | 0.07% | 1 | 1.39% |
| John Youn | 8 | 0.06% | 1 | 1.39% |
| Kay Sievers | 7 | 0.05% | 1 | 1.39% |
| Sergei Shtylyov | 4 | 0.03% | 2 | 2.78% |
| Al Viro | 4 | 0.03% | 1 | 1.39% |
| Jingoo Han | 4 | 0.03% | 1 | 1.39% |
| Eric Lescouet | 3 | 0.02% | 1 | 1.39% |
| Tejun Heo | 3 | 0.02% | 1 | 1.39% |
| Lei Ming | 3 | 0.02% | 1 | 1.39% |
| Kuninori Morimoto | 2 | 0.01% | 2 | 2.78% |
| Libo Chen | 2 | 0.01% | 1 | 1.39% |
| Laurent Pinchart | 2 | 0.01% | 1 | 1.39% |
| Sage Sharp | 2 | 0.01% | 1 | 1.39% |
| Alexey Dobriyan | 1 | 0.01% | 1 | 1.39% |
| Nobuhiro Iwamatsu | 1 | 0.01% | 1 | 1.39% |
| Felipe Balbi | 1 | 0.01% | 1 | 1.39% |
| Total | 13360 | 72 |
// SPDX-License-Identifier: GPL-2.0 /* * R8A66597 HCD (Host Controller Driver) * * Copyright (C) 2006-2007 Renesas Solutions Corp. * Portions Copyright (C) 2004 Psion Teklogix (for NetBook PRO) * Portions Copyright (C) 2004-2005 David Brownell * Portions Copyright (C) 1999 Roman Weissgaerber * * Author : Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/sched.h> #include <linux/errno.h> #include <linux/timer.h> #include <linux/delay.h> #include <linux/list.h> #include <linux/interrupt.h> #include <linux/usb.h> #include <linux/usb/hcd.h> #include <linux/platform_device.h> #include <linux/io.h> #include <linux/mm.h> #include <linux/irq.h> #include <linux/slab.h> #include <asm/cacheflush.h> #include "r8a66597.h" MODULE_DESCRIPTION("R8A66597 USB Host Controller Driver"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Yoshihiro Shimoda"); MODULE_ALIAS("platform:r8a66597_hcd"); #define DRIVER_VERSION "2009-05-26" static const char hcd_name[] = "r8a66597_hcd"; static void packet_write(struct r8a66597 *r8a66597, u16 pipenum); static int r8a66597_get_frame(struct usb_hcd *hcd); /* this function must be called with interrupt disabled */ static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum, unsigned long reg) { u16 tmp; tmp = r8a66597_read(r8a66597, INTENB0); r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0); r8a66597_bset(r8a66597, 1 << pipenum, reg); r8a66597_write(r8a66597, tmp, INTENB0); } /* this function must be called with interrupt disabled */ static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum, unsigned long reg) { u16 tmp; tmp = r8a66597_read(r8a66597, INTENB0); r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0); r8a66597_bclr(r8a66597, 1 << pipenum, reg); r8a66597_write(r8a66597, tmp, INTENB0); } static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address, u16 usbspd, u8 upphub, u8 hubport, int port) { u16 val; unsigned long devadd_reg = get_devadd_addr(r8a66597_address); val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001); r8a66597_write(r8a66597, val, devadd_reg); } static int r8a66597_clock_enable(struct r8a66597 *r8a66597) { u16 tmp; int i = 0; if (r8a66597->pdata->on_chip) { clk_prepare_enable(r8a66597->clk); do { r8a66597_write(r8a66597, SCKE, SYSCFG0); tmp = r8a66597_read(r8a66597, SYSCFG0); if (i++ > 1000) { printk(KERN_ERR "r8a66597: reg access fail.\n"); return -ENXIO; } } while ((tmp & SCKE) != SCKE); r8a66597_write(r8a66597, 0x04, 0x02); } else { do { r8a66597_write(r8a66597, USBE, SYSCFG0); tmp = r8a66597_read(r8a66597, SYSCFG0); if (i++ > 1000) { printk(KERN_ERR "r8a66597: reg access fail.\n"); return -ENXIO; } } while ((tmp & USBE) != USBE); r8a66597_bclr(r8a66597, USBE, SYSCFG0); r8a66597_mdfy(r8a66597, get_xtal_from_pdata(r8a66597->pdata), XTAL, SYSCFG0); i = 0; r8a66597_bset(r8a66597, XCKE, SYSCFG0); do { msleep(1); tmp = r8a66597_read(r8a66597, SYSCFG0); if (i++ > 500) { printk(KERN_ERR "r8a66597: reg access fail.\n"); return -ENXIO; } } while ((tmp & SCKE) != SCKE); } return 0; } static void r8a66597_clock_disable(struct r8a66597 *r8a66597) { r8a66597_bclr(r8a66597, SCKE, SYSCFG0); udelay(1); if (r8a66597->pdata->on_chip) { clk_disable_unprepare(r8a66597->clk); } else { r8a66597_bclr(r8a66597, PLLC, SYSCFG0); r8a66597_bclr(r8a66597, XCKE, SYSCFG0); r8a66597_bclr(r8a66597, USBE, SYSCFG0); } } static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port) { u16 val; val = port ? DRPD : DCFM | DRPD; r8a66597_bset(r8a66597, val, get_syscfg_reg(port)); r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port)); r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port)); r8a66597_bclr(r8a66597, DTCHE, get_intenb_reg(port)); r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); } static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port) { u16 val, tmp; r8a66597_write(r8a66597, 0, get_intenb_reg(port)); r8a66597_write(r8a66597, 0, get_intsts_reg(port)); r8a66597_port_power(r8a66597, port, 0); do { tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS; udelay(640); } while (tmp == EDGESTS); val = port ? DRPD : DCFM | DRPD; r8a66597_bclr(r8a66597, val, get_syscfg_reg(port)); r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port)); } static int enable_controller(struct r8a66597 *r8a66597) { int ret, port; u16 vif = r8a66597->pdata->vif ? LDRV : 0; u16 irq_sense = r8a66597->irq_sense_low ? INTL : 0; u16 endian = r8a66597->pdata->endian ? BIGEND : 0; ret = r8a66597_clock_enable(r8a66597); if (ret < 0) return ret; r8a66597_bset(r8a66597, vif & LDRV, PINCFG); r8a66597_bset(r8a66597, USBE, SYSCFG0); r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0); r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG); r8a66597_bset(r8a66597, BRDY0, BRDYENB); r8a66597_bset(r8a66597, BEMP0, BEMPENB); r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL); r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL); r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL); r8a66597_bset(r8a66597, TRNENSEL, SOFCFG); r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1); for (port = 0; port < r8a66597->max_root_hub; port++) r8a66597_enable_port(r8a66597, port); return 0; } static void disable_controller(struct r8a66597 *r8a66597) { int port; /* disable interrupts */ r8a66597_write(r8a66597, 0, INTENB0); r8a66597_write(r8a66597, 0, INTENB1); r8a66597_write(r8a66597, 0, BRDYENB); r8a66597_write(r8a66597, 0, BEMPENB); r8a66597_write(r8a66597, 0, NRDYENB); /* clear status */ r8a66597_write(r8a66597, 0, BRDYSTS); r8a66597_write(r8a66597, 0, NRDYSTS); r8a66597_write(r8a66597, 0, BEMPSTS); for (port = 0; port < r8a66597->max_root_hub; port++) r8a66597_disable_port(r8a66597, port); r8a66597_clock_disable(r8a66597); } static int get_parent_r8a66597_address(struct r8a66597 *r8a66597, struct usb_device *udev) { struct r8a66597_device *dev; if (udev->parent && udev->parent->devnum != 1) udev = udev->parent; dev = dev_get_drvdata(&udev->dev); if (dev) return dev->address; else return 0; } static int is_child_device(char *devpath) { return (devpath[2] ? 1 : 0); } static int is_hub_limit(char *devpath) { return ((strlen(devpath) >= 4) ? 1 : 0); } static void get_port_number(struct r8a66597 *r8a66597, char *devpath, u16 *root_port, u16 *hub_port) { if (root_port) { *root_port = (devpath[0] & 0x0F) - 1; if (*root_port >= r8a66597->max_root_hub) printk(KERN_ERR "r8a66597: Illegal root port number.\n"); } if (hub_port) *hub_port = devpath[2] & 0x0F; } static u16 get_r8a66597_usb_speed(enum usb_device_speed speed) { u16 usbspd = 0; switch (speed) { case USB_SPEED_LOW: usbspd = LSMODE; break; case USB_SPEED_FULL: usbspd = FSMODE; break; case USB_SPEED_HIGH: usbspd = HSMODE; break; default: printk(KERN_ERR "r8a66597: unknown speed\n"); break; } return usbspd; } static void set_child_connect_map(struct r8a66597 *r8a66597, int address) { int idx; idx = address / 32; r8a66597->child_connect_map[idx] |= 1 << (address % 32); } static void put_child_connect_map(struct r8a66597 *r8a66597, int address) { int idx; idx = address / 32; r8a66597->child_connect_map[idx] &= ~(1 << (address % 32)); } static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch) { u16 pipenum = pipe->info.pipenum; const unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO}; const unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL}; const unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR}; if (dma_ch > R8A66597_PIPE_NO_DMA) /* dma fifo not use? */ dma_ch = R8A66597_PIPE_NO_DMA; pipe->fifoaddr = fifoaddr[dma_ch]; pipe->fifosel = fifosel[dma_ch]; pipe->fifoctr = fifoctr[dma_ch]; if (pipenum == 0) pipe->pipectr = DCPCTR; else pipe->pipectr = get_pipectr_addr(pipenum); if (check_bulk_or_isoc(pipenum)) { pipe->pipetre = get_pipetre_addr(pipenum); pipe->pipetrn = get_pipetrn_addr(pipenum); } else { pipe->pipetre = 0; pipe->pipetrn = 0; } } static struct r8a66597_device * get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb) { if (usb_pipedevice(urb->pipe) == 0) return &r8a66597->device0; return dev_get_drvdata(&urb->dev->dev); } static int make_r8a66597_device(struct r8a66597 *r8a66597, struct urb *urb, u8 addr) { struct r8a66597_device *dev; int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */ dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC); if (dev == NULL) return -ENOMEM; dev_set_drvdata(&urb->dev->dev, dev); dev->udev = urb->dev; dev->address = addr; dev->usb_address = usb_address; dev->state = USB_STATE_ADDRESS; dev->ep_in_toggle = 0; dev->ep_out_toggle = 0; INIT_LIST_HEAD(&dev->device_list); list_add_tail(&dev->device_list, &r8a66597->child_device); get_port_number(r8a66597, urb->dev->devpath, &dev->root_port, &dev->hub_port); if (!is_child_device(urb->dev->devpath)) r8a66597->root_hub[dev->root_port].dev = dev; set_devadd_reg(r8a66597, dev->address, get_r8a66597_usb_speed(urb->dev->speed), get_parent_r8a66597_address(r8a66597, urb->dev), dev->hub_port, dev->root_port); return 0; } /* this function must be called with interrupt disabled */ static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb) { u8 addr; /* R8A66597's address */ struct r8a66597_device *dev; if (is_hub_limit(urb->dev->devpath)) { dev_err(&urb->dev->dev, "External hub limit reached.\n"); return 0; } dev = get_urb_to_r8a66597_dev(r8a66597, urb); if (dev && dev->state >= USB_STATE_ADDRESS) return dev->address; for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) { if (r8a66597->address_map & (1 << addr)) continue; dev_dbg(&urb->dev->dev, "alloc_address: r8a66597_addr=%d\n", addr); r8a66597->address_map |= 1 << addr; if (make_r8a66597_device(r8a66597, urb, addr) < 0) return 0; return addr; } dev_err(&urb->dev->dev, "cannot communicate with a USB device more than 10.(%x)\n", r8a66597->address_map); return 0; } /* this function must be called with interrupt disabled */ static void free_usb_address(struct r8a66597 *r8a66597, struct r8a66597_device *dev, int reset) { int port; if (!dev) return; dev_dbg(&dev->udev->dev, "free_addr: addr=%d\n", dev->address); dev->state = USB_STATE_DEFAULT; r8a66597->address_map &= ~(1 << dev->address); dev->address = 0; /* * Only when resetting USB, it is necessary to erase drvdata. When * a usb device with usb hub is disconnect, "dev->udev" is already * freed on usb_desconnect(). So we cannot access the data. */ if (reset) dev_set_drvdata(&dev->udev->dev, NULL); list_del(&dev->device_list); kfree(dev); for (port = 0; port < r8a66597->max_root_hub; port++) { if (r8a66597->root_hub[port].dev == dev) { r8a66597->root_hub[port].dev = NULL; break; } } } static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg, u16 mask, u16 loop) { u16 tmp; int i = 0; do { tmp = r8a66597_read(r8a66597, reg); if (i++ > 1000000) { printk(KERN_ERR "r8a66597: register%lx, loop %x " "is timeout\n", reg, loop); break; } ndelay(1); } while ((tmp & mask) != loop); } /* this function must be called with interrupt disabled */ static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe) { u16 tmp; tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID; if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */ r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr); r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr); } /* this function must be called with interrupt disabled */ static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe) { u16 tmp; tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID; if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */ r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr); r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr); r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0); } /* this function must be called with interrupt disabled */ static void clear_all_buffer(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe) { u16 tmp; if (!pipe || pipe->info.pipenum == 0) return; pipe_stop(r8a66597, pipe); r8a66597_bset(r8a66597, ACLRM, pipe->pipectr); tmp = r8a66597_read(r8a66597, pipe->pipectr); tmp = r8a66597_read(r8a66597, pipe->pipectr); tmp = r8a66597_read(r8a66597, pipe->pipectr); r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr); } /* this function must be called with interrupt disabled */ static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe, int toggle) { if (toggle) r8a66597_bset(r8a66597, SQSET, pipe->pipectr); else r8a66597_bset(r8a66597, SQCLR, pipe->pipectr); } static inline unsigned short mbw_value(struct r8a66597 *r8a66597) { if (r8a66597->pdata->on_chip) return MBW_32; else return MBW_16; } /* this function must be called with interrupt disabled */ static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum) { unsigned short mbw = mbw_value(r8a66597); r8a66597_mdfy(r8a66597, mbw | pipenum, mbw | CURPIPE, CFIFOSEL); r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum); } /* this function must be called with interrupt disabled */ static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe) { unsigned short mbw = mbw_value(r8a66597); cfifo_change(r8a66597, 0); r8a66597_mdfy(r8a66597, mbw | 0, mbw | CURPIPE, D0FIFOSEL); r8a66597_mdfy(r8a66597, mbw | 0, mbw | CURPIPE, D1FIFOSEL); r8a66597_mdfy(r8a66597, mbw | pipe->info.pipenum, mbw | CURPIPE, pipe->fifosel); r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum); } static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep) { struct r8a66597_pipe *pipe = hep->hcpriv; if (usb_pipeendpoint(urb->pipe) == 0) return 0; else return pipe->info.pipenum; } static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb) { struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address; } static unsigned short *get_toggle_pointer(struct r8a66597_device *dev, int urb_pipe) { if (!dev) return NULL; return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle; } /* this function must be called with interrupt disabled */ static void pipe_toggle_set(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe, struct urb *urb, int set) { struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); unsigned char endpoint = usb_pipeendpoint(urb->pipe); unsigned short *toggle = get_toggle_pointer(dev, urb->pipe); if (!toggle) return; if (set) *toggle |= 1 << endpoint; else *toggle &= ~(1 << endpoint); } /* this function must be called with interrupt disabled */ static void pipe_toggle_save(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe, struct urb *urb) { if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON) pipe_toggle_set(r8a66597, pipe, urb, 1); else pipe_toggle_set(r8a66597, pipe, urb, 0); } /* this function must be called with interrupt disabled */ static void pipe_toggle_restore(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe, struct urb *urb) { struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); unsigned char endpoint = usb_pipeendpoint(urb->pipe); unsigned short *toggle = get_toggle_pointer(dev, urb->pipe); if (!toggle) return; r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint)); } /* this function must be called with interrupt disabled */ static void pipe_buffer_setting(struct r8a66597 *r8a66597, struct r8a66597_pipe_info *info) { u16 val = 0; if (info->pipenum == 0) return; r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum)); r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum)); r8a66597_write(r8a66597, info->pipenum, PIPESEL); if (!info->dir_in) val |= R8A66597_DIR; if (info->type == R8A66597_BULK && info->dir_in) val |= R8A66597_DBLB | R8A66597_SHTNAK; val |= info->type | info->epnum; r8a66597_write(r8a66597, val, PIPECFG); r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum), PIPEBUF); r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket, PIPEMAXP); r8a66597_write(r8a66597, info->interval, PIPEPERI); } /* this function must be called with interrupt disabled */ static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td) { struct r8a66597_pipe_info *info; struct urb *urb = td->urb; if (td->pipenum > 0) { info = &td->pipe->info; cfifo_change(r8a66597, 0); pipe_buffer_setting(r8a66597, info); if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe), usb_pipeout(urb->pipe)) && !usb_pipecontrol(urb->pipe)) { r8a66597_pipe_toggle(r8a66597, td->pipe, 0); pipe_toggle_set(r8a66597, td->pipe, urb, 0); clear_all_buffer(r8a66597, td->pipe); usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), usb_pipeout(urb->pipe), 1); } pipe_toggle_restore(r8a66597, td->pipe, urb); } } /* this function must be called with interrupt disabled */ static u16 get_empty_pipenum(struct r8a66597 *r8a66597, struct usb_endpoint_descriptor *ep) { u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min; memset(array, 0, sizeof(array)); switch (usb_endpoint_type(ep)) { case USB_ENDPOINT_XFER_BULK: if (usb_endpoint_dir_in(ep)) array[i++] = 4; else { array[i++] = 3; array[i++] = 5; } break; case USB_ENDPOINT_XFER_INT: if (usb_endpoint_dir_in(ep)) { array[i++] = 6; array[i++] = 7; array[i++] = 8; } else array[i++] = 9; break; case USB_ENDPOINT_XFER_ISOC: if (usb_endpoint_dir_in(ep)) array[i++] = 2; else array[i++] = 1; break; default: printk(KERN_ERR "r8a66597: Illegal type\n"); return 0; } i = 1; min = array[0]; while (array[i] != 0) { if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]]) min = array[i]; i++; } return min; } static u16 get_r8a66597_type(__u8 type) { u16 r8a66597_type; switch (type) { case USB_ENDPOINT_XFER_BULK: r8a66597_type = R8A66597_BULK; break; case USB_ENDPOINT_XFER_INT: r8a66597_type = R8A66597_INT; break; case USB_ENDPOINT_XFER_ISOC: r8a66597_type = R8A66597_ISO; break; default: printk(KERN_ERR "r8a66597: Illegal type\n"); r8a66597_type = 0x0000; break; } return r8a66597_type; } static u16 get_bufnum(u16 pipenum) { u16 bufnum = 0; if (pipenum == 0) bufnum = 0; else if (check_bulk_or_isoc(pipenum)) bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2; else if (check_interrupt(pipenum)) bufnum = 4 + (pipenum - 6); else printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum); return bufnum; } static u16 get_buf_bsize(u16 pipenum) { u16 buf_bsize = 0; if (pipenum == 0) buf_bsize = 3; else if (check_bulk_or_isoc(pipenum)) buf_bsize = R8A66597_BUF_BSIZE - 1; else if (check_interrupt(pipenum)) buf_bsize = 0; else printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum); return buf_bsize; } /* this function must be called with interrupt disabled */ static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597, struct r8a66597_device *dev, struct r8a66597_pipe *pipe, struct urb *urb) { int i; struct r8a66597_pipe_info *info = &pipe->info; unsigned short mbw = mbw_value(r8a66597); /* pipe dma is only for external controlles */ if (r8a66597->pdata->on_chip) return; if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) { for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) { if ((r8a66597->dma_map & (1 << i)) != 0) continue; dev_info(&dev->udev->dev, "address %d, EndpointAddress 0x%02x use " "DMA FIFO\n", usb_pipedevice(urb->pipe), info->dir_in ? USB_ENDPOINT_DIR_MASK + info->epnum : info->epnum); r8a66597->dma_map |= 1 << i; dev->dma_map |= 1 << i; set_pipe_reg_addr(pipe, i); cfifo_change(r8a66597, 0); r8a66597_mdfy(r8a66597, mbw | pipe->info.pipenum, mbw | CURPIPE, pipe->fifosel); r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum); r8a66597_bset(r8a66597, BCLR, pipe->fifoctr); break; } } } /* this function must be called with interrupt disabled */ static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb, struct usb_host_endpoint *hep, struct r8a66597_pipe_info *info) { struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); struct r8a66597_pipe *pipe = hep->hcpriv; dev_dbg(&dev->udev->dev, "enable_pipe:\n"); pipe->info = *info; set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA); r8a66597->pipe_cnt[pipe->info.pipenum]++; dev->pipe_cnt[pipe->info.pipenum]++; enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb); } static void r8a66597_urb_done(struct r8a66597 *r8a66597, struct urb *urb, int status) __releases(r8a66597->lock) __acquires(r8a66597->lock) { if (usb_pipein(urb->pipe) && usb_pipetype(urb->pipe) != PIPE_CONTROL) { void *ptr; for (ptr = urb->transfer_buffer; ptr < urb->transfer_buffer + urb->transfer_buffer_length; ptr += PAGE_SIZE) flush_dcache_page(virt_to_page(ptr)); } usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb); spin_unlock(&r8a66597->lock); usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb, status); spin_lock(&r8a66597->lock); } /* this function must be called with interrupt disabled */ static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address) { struct r8a66597_td *td, *next; struct urb *urb; struct list_head *list = &r8a66597->pipe_queue[pipenum]; if (list_empty(list)) return; list_for_each_entry_safe(td, next, list, queue) { if (td->address != address) continue; urb = td->urb; list_del(&td->queue); kfree(td); if (urb) r8a66597_urb_done(r8a66597, urb, -ENODEV); break; } } /* this function must be called with interrupt disabled */ static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597, struct r8a66597_device *dev) { int check_ep0 = 0; u16 pipenum; if (!dev) return; for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { if (!dev->pipe_cnt[pipenum]) continue; if (!check_ep0) { check_ep0 = 1; force_dequeue(r8a66597, 0, dev->address); } r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum]; dev->pipe_cnt[pipenum] = 0; force_dequeue(r8a66597, pipenum, dev->address); } dev_dbg(&dev->udev->dev, "disable_pipe\n"); r8a66597->dma_map &= ~(dev->dma_map); dev->dma_map = 0; } static u16 get_interval(struct urb *urb, __u8 interval) { u16 time = 1; int i; if (urb->dev->speed == USB_SPEED_HIGH) { if (interval > IITV) time = IITV; else time = interval ? interval - 1 : 0; } else { if (interval > 128) { time = IITV; } else { /* calculate the nearest value for PIPEPERI */ for (i = 0; i < 7; i++) { if ((1 << i) < interval && (1 << (i + 1) > interval)) time = 1 << i; } } } return time; } static unsigned long get_timer_interval(struct urb *urb, __u8 interval) { __u8 i; unsigned long time = 1; if (usb_pipeisoc(urb->pipe)) return 0; if (get_r8a66597_usb_speed(urb->dev->speed) == HSMODE) { for (i = 0; i < (interval - 1); i++) time *= 2; time = time * 125 / 1000; /* uSOF -> msec */ } else { time = interval; } return time; } /* this function must be called with interrupt disabled */ static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb, struct usb_host_endpoint *hep, struct usb_endpoint_descriptor *ep) { struct r8a66597_pipe_info info; info.pipenum = get_empty_pipenum(r8a66597, ep); info.address = get_urb_to_r8a66597_addr(r8a66597, urb); info.epnum = usb_endpoint_num(ep); info.maxpacket = usb_endpoint_maxp(ep); info.type = get_r8a66597_type(usb_endpoint_type(ep)); info.bufnum = get_bufnum(info.pipenum); info.buf_bsize = get_buf_bsize(info.pipenum); if (info.type == R8A66597_BULK) { info.interval = 0; info.timer_interval = 0; } else { info.interval = get_interval(urb, ep->bInterval); info.timer_interval = get_timer_interval(urb, ep->bInterval); } if (usb_endpoint_dir_in(ep)) info.dir_in = 1; else info.dir_in = 0; enable_r8a66597_pipe(r8a66597, urb, hep, &info); } static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb) { struct r8a66597_device *dev; dev = get_urb_to_r8a66597_dev(r8a66597, urb); dev->state = USB_STATE_CONFIGURED; } static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb, u16 pipenum) { if (pipenum == 0 && usb_pipeout(urb->pipe)) enable_irq_empty(r8a66597, pipenum); else enable_irq_ready(r8a66597, pipenum); if (!usb_pipeisoc(urb->pipe)) enable_irq_nrdy(r8a66597, pipenum); } static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum) { disable_irq_ready(r8a66597, pipenum); disable_irq_nrdy(r8a66597, pipenum); } static void r8a66597_root_hub_start_polling(struct r8a66597 *r8a66597) { mod_timer(&r8a66597->rh_timer, jiffies + msecs_to_jiffies(R8A66597_RH_POLL_TIME)); } static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port, int connect) { struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST; rh->scount = R8A66597_MAX_SAMPLING; if (connect) rh->port |= USB_PORT_STAT_CONNECTION; else rh->port &= ~USB_PORT_STAT_CONNECTION; rh->port |= USB_PORT_STAT_C_CONNECTION << 16; r8a66597_root_hub_start_polling(r8a66597); } /* this function must be called with interrupt disabled */ static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port, u16 syssts) __releases(r8a66597->lock) __acquires(r8a66597->lock) { if (syssts == SE0) { r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port)); r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); } else { if (syssts == FS_JSTS) r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port)); else if (syssts == LS_JSTS) r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port)); r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port)); r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port)); if (r8a66597->bus_suspended) usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597)); } spin_unlock(&r8a66597->lock); usb_hcd_poll_rh_status(r8a66597_to_hcd(r8a66597)); spin_lock(&r8a66597->lock); } /* this function must be called with interrupt disabled */ static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port) { u16 speed = get_rh_usb_speed(r8a66597, port); struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; rh->port &= ~(USB_PORT_STAT_HIGH_SPEED | USB_PORT_STAT_LOW_SPEED); if (speed == HSMODE) rh->port |= USB_PORT_STAT_HIGH_SPEED; else if (speed == LSMODE) rh->port |= USB_PORT_STAT_LOW_SPEED; rh->port &= ~USB_PORT_STAT_RESET; rh->port |= USB_PORT_STAT_ENABLE; } /* this function must be called with interrupt disabled */ static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port) { struct r8a66597_device *dev = r8a66597->root_hub[port].dev; disable_r8a66597_pipe_all(r8a66597, dev); free_usb_address(r8a66597, dev, 0); start_root_hub_sampling(r8a66597, port, 0); } /* this function must be called with interrupt disabled */ static void prepare_setup_packet(struct r8a66597 *r8a66597, struct r8a66597_td *td) { int i; __le16 *p = (__le16 *)td->urb->setup_packet; unsigned long setup_addr = USBREQ; r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket, DCPMAXP); r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1); for (i = 0; i < 4; i++) { r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr); setup_addr += 2; } r8a66597_write(r8a66597, SUREQ, DCPCTR); } /* this function must be called with interrupt disabled */ static void prepare_packet_read(struct r8a66597 *r8a66597, struct r8a66597_td *td) { struct urb *urb = td->urb; if (usb_pipecontrol(urb->pipe)) { r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG); r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL); r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); if (urb->actual_length == 0) { r8a66597_pipe_toggle(r8a66597, td->pipe, 1); r8a66597_write(r8a66597, BCLR, CFIFOCTR); } pipe_irq_disable(r8a66597, td->pipenum); pipe_start(r8a66597, td->pipe); pipe_irq_enable(r8a66597, urb, td->pipenum); } else { if (urb->actual_length == 0) { pipe_irq_disable(r8a66597, td->pipenum); pipe_setting(r8a66597, td); pipe_stop(r8a66597, td->pipe); r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS); if (td->pipe->pipetre) { r8a66597_write(r8a66597, TRCLR, td->pipe->pipetre); r8a66597_write(r8a66597, DIV_ROUND_UP (urb->transfer_buffer_length, td->maxpacket), td->pipe->pipetrn); r8a66597_bset(r8a66597, TRENB, td->pipe->pipetre); } pipe_start(r8a66597, td->pipe); pipe_irq_enable(r8a66597, urb, td->pipenum); } } } /* this function must be called with interrupt disabled */ static void prepare_packet_write(struct r8a66597 *r8a66597, struct r8a66597_td *td) { u16 tmp; struct urb *urb = td->urb; if (usb_pipecontrol(urb->pipe)) { pipe_stop(r8a66597, td->pipe); r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG); r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL); r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); if (urb->actual_length == 0) { r8a66597_pipe_toggle(r8a66597, td->pipe, 1); r8a66597_write(r8a66597, BCLR, CFIFOCTR); } } else { if (urb->actual_length == 0) pipe_setting(r8a66597, td); if (td->pipe->pipetre) r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre); } r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS); fifo_change_from_pipe(r8a66597, td->pipe); tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); if (unlikely((tmp & FRDY) == 0)) pipe_irq_enable(r8a66597, urb, td->pipenum); else packet_write(r8a66597, td->pipenum); pipe_start(r8a66597, td->pipe); } /* this function must be called with interrupt disabled */ static void prepare_status_packet(struct r8a66597 *r8a66597, struct r8a66597_td *td) { struct urb *urb = td->urb; r8a66597_pipe_toggle(r8a66597, td->pipe, 1); pipe_stop(r8a66597, td->pipe); if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) { r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG); r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL); r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); r8a66597_write(r8a66597, ~BEMP0, BEMPSTS); r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR); enable_irq_empty(r8a66597, 0); } else { r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG); r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL); r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); r8a66597_write(r8a66597, BCLR, CFIFOCTR); enable_irq_ready(r8a66597, 0); } enable_irq_nrdy(r8a66597, 0); pipe_start(r8a66597, td->pipe); } static int is_set_address(unsigned char *setup_packet) { if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) && setup_packet[1] == USB_REQ_SET_ADDRESS) return 1; else return 0; } /* this function must be called with interrupt disabled */ static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td) { BUG_ON(!td); switch (td->type) { case USB_PID_SETUP: if (is_set_address(td->urb->setup_packet)) { td->set_address = 1; td->urb->setup_packet[2] = alloc_usb_address(r8a66597, td->urb); if (td->urb->setup_packet[2] == 0) return -EPIPE; } prepare_setup_packet(r8a66597, td); break; case USB_PID_IN: prepare_packet_read(r8a66597, td); break; case USB_PID_OUT: prepare_packet_write(r8a66597, td); break; case USB_PID_ACK: prepare_status_packet(r8a66597, td); break; default: printk(KERN_ERR "r8a66597: invalid type.\n"); break; } return 0; } static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb) { if (usb_pipeisoc(urb->pipe)) { if (urb->number_of_packets == td->iso_cnt) return 1; } /* control or bulk or interrupt */ if ((urb->transfer_buffer_length <= urb->actual_length) || (td->short_packet) || (td->zero_packet)) return 1; return 0; } /* this function must be called with interrupt disabled */ static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td) { unsigned long time; BUG_ON(!td); if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) && !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) { r8a66597->timeout_map |= 1 << td->pipenum; switch (usb_pipetype(td->urb->pipe)) { case PIPE_INTERRUPT: case PIPE_ISOCHRONOUS: time = 30; break; default: time = 50; break; } mod_timer(&r8a66597->timers[td->pipenum].td, jiffies + msecs_to_jiffies(time)); } } /* this function must be called with interrupt disabled */ static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td, u16 pipenum, struct urb *urb, int status) __releases(r8a66597->lock) __acquires(r8a66597->lock) { int restart = 0; struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); r8a66597->timeout_map &= ~(1 << pipenum); if (likely(td)) { if (td->set_address && (status != 0 || urb->unlinked)) r8a66597->address_map &= ~(1 << urb->setup_packet[2]); pipe_toggle_save(r8a66597, td->pipe, urb); list_del(&td->queue); kfree(td); } if (!list_empty(&r8a66597->pipe_queue[pipenum])) restart = 1; if (likely(urb)) { if (usb_pipeisoc(urb->pipe)) urb->start_frame = r8a66597_get_frame(hcd); r8a66597_urb_done(r8a66597, urb, status); } if (restart) { td = r8a66597_get_td(r8a66597, pipenum); if (unlikely(!td)) return; start_transfer(r8a66597, td); set_td_timer(r8a66597, td); } } static void packet_read(struct r8a66597 *r8a66597, u16 pipenum) { u16 tmp; int rcv_len, bufsize, urb_len, size; u16 *buf; struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); struct urb *urb; int finish = 0; int status = 0; if (unlikely(!td)) return; urb = td->urb; fifo_change_from_pipe(r8a66597, td->pipe); tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); if (unlikely((tmp & FRDY) == 0)) { pipe_stop(r8a66597, td->pipe); pipe_irq_disable(r8a66597, pipenum); printk(KERN_ERR "r8a66597: in fifo not ready (%d)\n", pipenum); finish_request(r8a66597, td, pipenum, td->urb, -EPIPE); return; } /* prepare parameters */ rcv_len = tmp & DTLN; if (usb_pipeisoc(urb->pipe)) { buf = (u16 *)(urb->transfer_buffer + urb->iso_frame_desc[td->iso_cnt].offset); urb_len = urb->iso_frame_desc[td->iso_cnt].length; } else { buf = (void *)urb->transfer_buffer + urb->actual_length; urb_len = urb->transfer_buffer_length - urb->actual_length; } bufsize = min(urb_len, (int) td->maxpacket); if (rcv_len <= bufsize) { size = rcv_len; } else { size = bufsize; status = -EOVERFLOW; finish = 1; } /* update parameters */ urb->actual_length += size; if (rcv_len == 0) td->zero_packet = 1; if (rcv_len < bufsize) { td->short_packet = 1; } if (usb_pipeisoc(urb->pipe)) { urb->iso_frame_desc[td->iso_cnt].actual_length = size; urb->iso_frame_desc[td->iso_cnt].status = status; td->iso_cnt++; finish = 0; } /* check transfer finish */ if (finish || check_transfer_finish(td, urb)) { pipe_stop(r8a66597, td->pipe); pipe_irq_disable(r8a66597, pipenum); finish = 1; } /* read fifo */ if (urb->transfer_buffer) { if (size == 0) r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr); else r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr, buf, size); } if (finish && pipenum != 0) finish_request(r8a66597, td, pipenum, urb, status); } static void packet_write(struct r8a66597 *r8a66597, u16 pipenum) { u16 tmp; int bufsize, size; u16 *buf; struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); struct urb *urb; if (unlikely(!td)) return; urb = td->urb; fifo_change_from_pipe(r8a66597, td->pipe); tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); if (unlikely((tmp & FRDY) == 0)) { pipe_stop(r8a66597, td->pipe); pipe_irq_disable(r8a66597, pipenum); printk(KERN_ERR "r8a66597: out fifo not ready (%d)\n", pipenum); finish_request(r8a66597, td, pipenum, urb, -EPIPE); return; } /* prepare parameters */ bufsize = td->maxpacket; if (usb_pipeisoc(urb->pipe)) { buf = (u16 *)(urb->transfer_buffer + urb->iso_frame_desc[td->iso_cnt].offset); size = min(bufsize, (int)urb->iso_frame_desc[td->iso_cnt].length); } else { buf = (u16 *)(urb->transfer_buffer + urb->actual_length); size = min_t(u32, bufsize, urb->transfer_buffer_length - urb->actual_length); } /* write fifo */ if (pipenum > 0) r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS); if (urb->transfer_buffer) { r8a66597_write_fifo(r8a66597, td->pipe, buf, size); if (!usb_pipebulk(urb->pipe) || td->maxpacket != size) r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr); } /* update parameters */ urb->actual_length += size; if (usb_pipeisoc(urb->pipe)) { urb->iso_frame_desc[td->iso_cnt].actual_length = size; urb->iso_frame_desc[td->iso_cnt].status = 0; td->iso_cnt++; } /* check transfer finish */ if (check_transfer_finish(td, urb)) { disable_irq_ready(r8a66597, pipenum); enable_irq_empty(r8a66597, pipenum); if (!usb_pipeisoc(urb->pipe)) enable_irq_nrdy(r8a66597, pipenum); } else pipe_irq_enable(r8a66597, urb, pipenum); } static void check_next_phase(struct r8a66597 *r8a66597, int status) { struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0); struct urb *urb; u8 finish = 0; if (unlikely(!td)) return; urb = td->urb; switch (td->type) { case USB_PID_IN: case USB_PID_OUT: if (check_transfer_finish(td, urb)) td->type = USB_PID_ACK; break; case USB_PID_SETUP: if (urb->transfer_buffer_length == urb->actual_length) td->type = USB_PID_ACK; else if (usb_pipeout(urb->pipe)) td->type = USB_PID_OUT; else td->type = USB_PID_IN; break; case USB_PID_ACK: finish = 1; break; } if (finish || status != 0 || urb->unlinked) finish_request(r8a66597, td, 0, urb, status); else start_transfer(r8a66597, td); } static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum) { struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum); if (td) { u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID; if (pid == PID_NAK) return -ECONNRESET; else return -EPIPE; } return 0; } static void irq_pipe_ready(struct r8a66597 *r8a66597) { u16 check; u16 pipenum; u16 mask; struct r8a66597_td *td; mask = r8a66597_read(r8a66597, BRDYSTS) & r8a66597_read(r8a66597, BRDYENB); r8a66597_write(r8a66597, ~mask, BRDYSTS); if (mask & BRDY0) { td = r8a66597_get_td(r8a66597, 0); if (td && td->type == USB_PID_IN) packet_read(r8a66597, 0); else pipe_irq_disable(r8a66597, 0); check_next_phase(r8a66597, 0); } for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { check = 1 << pipenum; if (mask & check) { td = r8a66597_get_td(r8a66597, pipenum); if (unlikely(!td)) continue; if (td->type == USB_PID_IN) packet_read(r8a66597, pipenum); else if (td->type == USB_PID_OUT) packet_write(r8a66597, pipenum); } } } static void irq_pipe_empty(struct r8a66597 *r8a66597) { u16 tmp; u16 check; u16 pipenum; u16 mask; struct r8a66597_td *td; mask = r8a66597_read(r8a66597, BEMPSTS) & r8a66597_read(r8a66597, BEMPENB); r8a66597_write(r8a66597, ~mask, BEMPSTS); if (mask & BEMP0) { cfifo_change(r8a66597, 0); td = r8a66597_get_td(r8a66597, 0); if (td && td->type != USB_PID_OUT) disable_irq_empty(r8a66597, 0); check_next_phase(r8a66597, 0); } for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { check = 1 << pipenum; if (mask & check) { struct r8a66597_td *td; td = r8a66597_get_td(r8a66597, pipenum); if (unlikely(!td)) continue; tmp = r8a66597_read(r8a66597, td->pipe->pipectr); if ((tmp & INBUFM) == 0) { disable_irq_empty(r8a66597, pipenum); pipe_irq_disable(r8a66597, pipenum); finish_request(r8a66597, td, pipenum, td->urb, 0); } } } } static void irq_pipe_nrdy(struct r8a66597 *r8a66597) { u16 check; u16 pipenum; u16 mask; int status; mask = r8a66597_read(r8a66597, NRDYSTS) & r8a66597_read(r8a66597, NRDYENB); r8a66597_write(r8a66597, ~mask, NRDYSTS); if (mask & NRDY0) { cfifo_change(r8a66597, 0); status = get_urb_error(r8a66597, 0); pipe_irq_disable(r8a66597, 0); check_next_phase(r8a66597, status); } for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { check = 1 << pipenum; if (mask & check) { struct r8a66597_td *td; td = r8a66597_get_td(r8a66597, pipenum); if (unlikely(!td)) continue; status = get_urb_error(r8a66597, pipenum); pipe_irq_disable(r8a66597, pipenum); pipe_stop(r8a66597, td->pipe); finish_request(r8a66597, td, pipenum, td->urb, status); } } } static irqreturn_t r8a66597_irq(struct usb_hcd *hcd) { struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); u16 intsts0, intsts1, intsts2; u16 intenb0, intenb1, intenb2; u16 mask0, mask1, mask2; int status; spin_lock(&r8a66597->lock); intsts0 = r8a66597_read(r8a66597, INTSTS0); intsts1 = r8a66597_read(r8a66597, INTSTS1); intsts2 = r8a66597_read(r8a66597, INTSTS2); intenb0 = r8a66597_read(r8a66597, INTENB0); intenb1 = r8a66597_read(r8a66597, INTENB1); intenb2 = r8a66597_read(r8a66597, INTENB2); mask2 = intsts2 & intenb2; mask1 = intsts1 & intenb1; mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY); if (mask2) { if (mask2 & ATTCH) { r8a66597_write(r8a66597, ~ATTCH, INTSTS2); r8a66597_bclr(r8a66597, ATTCHE, INTENB2); /* start usb bus sampling */ start_root_hub_sampling(r8a66597, 1, 1); } if (mask2 & DTCH) { r8a66597_write(r8a66597, ~DTCH, INTSTS2); r8a66597_bclr(r8a66597, DTCHE, INTENB2); r8a66597_usb_disconnect(r8a66597, 1); } if (mask2 & BCHG) { r8a66597_write(r8a66597, ~BCHG, INTSTS2); r8a66597_bclr(r8a66597, BCHGE, INTENB2); usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597)); } } if (mask1) { if (mask1 & ATTCH) { r8a66597_write(r8a66597, ~ATTCH, INTSTS1); r8a66597_bclr(r8a66597, ATTCHE, INTENB1); /* start usb bus sampling */ start_root_hub_sampling(r8a66597, 0, 1); } if (mask1 & DTCH) { r8a66597_write(r8a66597, ~DTCH, INTSTS1); r8a66597_bclr(r8a66597, DTCHE, INTENB1); r8a66597_usb_disconnect(r8a66597, 0); } if (mask1 & BCHG) { r8a66597_write(r8a66597, ~BCHG, INTSTS1); r8a66597_bclr(r8a66597, BCHGE, INTENB1); usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597)); } if (mask1 & SIGN) { r8a66597_write(r8a66597, ~SIGN, INTSTS1); status = get_urb_error(r8a66597, 0); check_next_phase(r8a66597, status); } if (mask1 & SACK) { r8a66597_write(r8a66597, ~SACK, INTSTS1); check_next_phase(r8a66597, 0); } } if (mask0) { if (mask0 & BRDY) irq_pipe_ready(r8a66597); if (mask0 & BEMP) irq_pipe_empty(r8a66597); if (mask0 & NRDY) irq_pipe_nrdy(r8a66597); } spin_unlock(&r8a66597->lock); return IRQ_HANDLED; } /* this function must be called with interrupt disabled */ static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port) { u16 tmp; struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; if (rh->port & USB_PORT_STAT_RESET) { unsigned long dvstctr_reg = get_dvstctr_reg(port); tmp = r8a66597_read(r8a66597, dvstctr_reg); if ((tmp & USBRST) == USBRST) { r8a66597_mdfy(r8a66597, UACT, USBRST | UACT, dvstctr_reg); r8a66597_root_hub_start_polling(r8a66597); } else r8a66597_usb_connect(r8a66597, port); } if (!(rh->port & USB_PORT_STAT_CONNECTION)) { r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port)); r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); } if (rh->scount > 0) { tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST; if (tmp == rh->old_syssts) { rh->scount--; if (rh->scount == 0) r8a66597_check_syssts(r8a66597, port, tmp); else r8a66597_root_hub_start_polling(r8a66597); } else { rh->scount = R8A66597_MAX_SAMPLING; rh->old_syssts = tmp; r8a66597_root_hub_start_polling(r8a66597); } } } static void r8a66597_interval_timer(struct timer_list *t) { struct r8a66597_timers *timers = from_timer(timers, t, interval); struct r8a66597 *r8a66597 = timers->r8a66597; unsigned long flags; u16 pipenum; struct r8a66597_td *td; spin_lock_irqsave(&r8a66597->lock, flags); for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { if (!(r8a66597->interval_map & (1 << pipenum))) continue; if (timer_pending(&r8a66597->timers[pipenum].interval)) continue; td = r8a66597_get_td(r8a66597, pipenum); if (td) start_transfer(r8a66597, td); } spin_unlock_irqrestore(&r8a66597->lock, flags); } static void r8a66597_td_timer(struct timer_list *t) { struct r8a66597_timers *timers = from_timer(timers, t, td); struct r8a66597 *r8a66597 = timers->r8a66597; unsigned long flags; u16 pipenum; struct r8a66597_td *td, *new_td = NULL; struct r8a66597_pipe *pipe; spin_lock_irqsave(&r8a66597->lock, flags); for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) { if (!(r8a66597->timeout_map & (1 << pipenum))) continue; if (timer_pending(&r8a66597->timers[pipenum].td)) continue; td = r8a66597_get_td(r8a66597, pipenum); if (!td) { r8a66597->timeout_map &= ~(1 << pipenum); continue; } if (td->urb->actual_length) { set_td_timer(r8a66597, td); break; } pipe = td->pipe; pipe_stop(r8a66597, pipe); /* Select a different address or endpoint */ new_td = td; do { list_move_tail(&new_td->queue, &r8a66597->pipe_queue[pipenum]); new_td = r8a66597_get_td(r8a66597, pipenum); if (!new_td) { new_td = td; break; } } while (td != new_td && td->address == new_td->address && td->pipe->info.epnum == new_td->pipe->info.epnum); start_transfer(r8a66597, new_td); if (td == new_td) r8a66597->timeout_map &= ~(1 << pipenum); else set_td_timer(r8a66597, new_td); break; } spin_unlock_irqrestore(&r8a66597->lock, flags); } static void r8a66597_timer(struct timer_list *t) { struct r8a66597 *r8a66597 = from_timer(r8a66597, t, rh_timer); unsigned long flags; int port; spin_lock_irqsave(&r8a66597->lock, flags); for (port = 0; port < r8a66597->max_root_hub; port++) r8a66597_root_hub_control(r8a66597, port); spin_unlock_irqrestore(&r8a66597->lock, flags); } static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb) { struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb); if (dev && dev->address && dev->state != USB_STATE_CONFIGURED && (urb->dev->state == USB_STATE_CONFIGURED)) return 1; else return 0; } static int r8a66597_start(struct usb_hcd *hcd) { struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); hcd->state = HC_STATE_RUNNING; return enable_controller(r8a66597); } static void r8a66597_stop(struct usb_hcd *hcd) { struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); disable_controller(r8a66597); } static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb) { unsigned int usb_address = usb_pipedevice(urb->pipe); u16 root_port, hub_port; if (usb_address == 0) { get_port_number(r8a66597, urb->dev->devpath, &root_port, &hub_port); set_devadd_reg(r8a66597, 0, get_r8a66597_usb_speed(urb->dev->speed), get_parent_r8a66597_address(r8a66597, urb->dev), hub_port, root_port); } } static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597, struct urb *urb, struct usb_host_endpoint *hep) { struct r8a66597_td *td; u16 pipenum; td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC); if (td == NULL) return NULL; pipenum = r8a66597_get_pipenum(urb, hep); td->pipenum = pipenum; td->pipe = hep->hcpriv; td->urb = urb; td->address = get_urb_to_r8a66597_addr(r8a66597, urb); td->maxpacket = usb_maxpacket(urb->dev, urb->pipe, !usb_pipein(urb->pipe)); if (usb_pipecontrol(urb->pipe)) td->type = USB_PID_SETUP; else if (usb_pipein(urb->pipe)) td->type = USB_PID_IN; else td->type = USB_PID_OUT; INIT_LIST_HEAD(&td->queue); return td; } static int r8a66597_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags) { struct usb_host_endpoint *hep = urb->ep; struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); struct r8a66597_td *td = NULL; int ret, request = 0; unsigned long flags; spin_lock_irqsave(&r8a66597->lock, flags); if (!get_urb_to_r8a66597_dev(r8a66597, urb)) { ret = -ENODEV; goto error_not_linked; } ret = usb_hcd_link_urb_to_ep(hcd, urb); if (ret) goto error_not_linked; if (!hep->hcpriv) { hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe), GFP_ATOMIC); if (!hep->hcpriv) { ret = -ENOMEM; goto error; } set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA); if (usb_pipeendpoint(urb->pipe)) init_pipe_info(r8a66597, urb, hep, &hep->desc); } if (unlikely(check_pipe_config(r8a66597, urb))) init_pipe_config(r8a66597, urb); set_address_zero(r8a66597, urb); td = r8a66597_make_td(r8a66597, urb, hep); if (td == NULL) { ret = -ENOMEM; goto error; } if (list_empty(&r8a66597->pipe_queue[td->pipenum])) request = 1; list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]); urb->hcpriv = td; if (request) { if (td->pipe->info.timer_interval) { r8a66597->interval_map |= 1 << td->pipenum; mod_timer(&r8a66597->timers[td->pipenum].interval, jiffies + msecs_to_jiffies( td->pipe->info.timer_interval)); } else { ret = start_transfer(r8a66597, td); if (ret < 0) { list_del(&td->queue); kfree(td); } } } else set_td_timer(r8a66597, td); error: if (ret) usb_hcd_unlink_urb_from_ep(hcd, urb); error_not_linked: spin_unlock_irqrestore(&r8a66597->lock, flags); return ret; } static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) { struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); struct r8a66597_td *td; unsigned long flags; int rc; spin_lock_irqsave(&r8a66597->lock, flags); rc = usb_hcd_check_unlink_urb(hcd, urb, status); if (rc) goto done; if (urb->hcpriv) { td = urb->hcpriv; pipe_stop(r8a66597, td->pipe); pipe_irq_disable(r8a66597, td->pipenum); disable_irq_empty(r8a66597, td->pipenum); finish_request(r8a66597, td, td->pipenum, urb, status); } done: spin_unlock_irqrestore(&r8a66597->lock, flags); return rc; } static void r8a66597_endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *hep) __acquires(r8a66597->lock) __releases(r8a66597->lock) { struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv; struct r8a66597_td *td; struct urb *urb = NULL; u16 pipenum; unsigned long flags; if (pipe == NULL) return; pipenum = pipe->info.pipenum; spin_lock_irqsave(&r8a66597->lock, flags); if (pipenum == 0) { kfree(hep->hcpriv); hep->hcpriv = NULL; spin_unlock_irqrestore(&r8a66597->lock, flags); return; } pipe_stop(r8a66597, pipe); pipe_irq_disable(r8a66597, pipenum); disable_irq_empty(r8a66597, pipenum); td = r8a66597_get_td(r8a66597, pipenum); if (td) urb = td->urb; finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN); kfree(hep->hcpriv); hep->hcpriv = NULL; spin_unlock_irqrestore(&r8a66597->lock, flags); } static int r8a66597_get_frame(struct usb_hcd *hcd) { struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); return r8a66597_read(r8a66597, FRMNUM) & 0x03FF; } static void collect_usb_address_map(struct usb_device *udev, unsigned long *map) { int chix; struct usb_device *childdev; if (udev->state == USB_STATE_CONFIGURED && udev->parent && udev->parent->devnum > 1 && udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB) map[udev->devnum/32] |= (1 << (udev->devnum % 32)); usb_hub_for_each_child(udev, chix, childdev) collect_usb_address_map(childdev, map); } /* this function must be called with interrupt disabled */ static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597, int addr) { struct r8a66597_device *dev; struct list_head *list = &r8a66597->child_device; list_for_each_entry(dev, list, device_list) { if (dev->usb_address != addr) continue; return dev; } printk(KERN_ERR "r8a66597: get_r8a66597_device fail.(%d)\n", addr); return NULL; } static void update_usb_address_map(struct r8a66597 *r8a66597, struct usb_device *root_hub, unsigned long *map) { int i, j, addr; unsigned long diff; unsigned long flags; for (i = 0; i < 4; i++) { diff = r8a66597->child_connect_map[i] ^ map[i]; if (!diff) continue; for (j = 0; j < 32; j++) { if (!(diff & (1 << j))) continue; addr = i * 32 + j; if (map[i] & (1 << j)) set_child_connect_map(r8a66597, addr); else { struct r8a66597_device *dev; spin_lock_irqsave(&r8a66597->lock, flags); dev = get_r8a66597_device(r8a66597, addr); disable_r8a66597_pipe_all(r8a66597, dev); free_usb_address(r8a66597, dev, 0); put_child_connect_map(r8a66597, addr); spin_unlock_irqrestore(&r8a66597->lock, flags); } } } } static void r8a66597_check_detect_child(struct r8a66597 *r8a66597, struct usb_hcd *hcd) { struct usb_bus *bus; unsigned long now_map[4]; memset(now_map, 0, sizeof(now_map)); mutex_lock(&usb_bus_idr_lock); bus = idr_find(&usb_bus_idr, hcd->self.busnum); if (bus && bus->root_hub) { collect_usb_address_map(bus->root_hub, now_map); update_usb_address_map(r8a66597, bus->root_hub, now_map); } mutex_unlock(&usb_bus_idr_lock); } static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf) { struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); unsigned long flags; int i; r8a66597_check_detect_child(r8a66597, hcd); spin_lock_irqsave(&r8a66597->lock, flags); *buf = 0; /* initialize (no change) */ for (i = 0; i < r8a66597->max_root_hub; i++) { if (r8a66597->root_hub[i].port & 0xffff0000) *buf |= 1 << (i + 1); } spin_unlock_irqrestore(&r8a66597->lock, flags); return (*buf != 0); } static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597, struct usb_hub_descriptor *desc) { desc->bDescriptorType = USB_DT_HUB; desc->bHubContrCurrent = 0; desc->bNbrPorts = r8a66597->max_root_hub; desc->bDescLength = 9; desc->bPwrOn2PwrGood = 0; desc->wHubCharacteristics = cpu_to_le16(HUB_CHAR_INDV_PORT_LPSM | HUB_CHAR_NO_OCPM); desc->u.hs.DeviceRemovable[0] = ((1 << r8a66597->max_root_hub) - 1) << 1; desc->u.hs.DeviceRemovable[1] = ~0; } static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex, char *buf, u16 wLength) { struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); int ret; int port = (wIndex & 0x00FF) - 1; struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; unsigned long flags; ret = 0; spin_lock_irqsave(&r8a66597->lock, flags); switch (typeReq) { case ClearHubFeature: case SetHubFeature: switch (wValue) { case C_HUB_OVER_CURRENT: case C_HUB_LOCAL_POWER: break; default: goto error; } break; case ClearPortFeature: if (wIndex > r8a66597->max_root_hub) goto error; if (wLength != 0) goto error; switch (wValue) { case USB_PORT_FEAT_ENABLE: rh->port &= ~USB_PORT_STAT_POWER; break; case USB_PORT_FEAT_SUSPEND: break; case USB_PORT_FEAT_POWER: r8a66597_port_power(r8a66597, port, 0); break; case USB_PORT_FEAT_C_ENABLE: case USB_PORT_FEAT_C_SUSPEND: case USB_PORT_FEAT_C_CONNECTION: case USB_PORT_FEAT_C_OVER_CURRENT: case USB_PORT_FEAT_C_RESET: break; default: goto error; } rh->port &= ~(1 << wValue); break; case GetHubDescriptor: r8a66597_hub_descriptor(r8a66597, (struct usb_hub_descriptor *)buf); break; case GetHubStatus: *buf = 0x00; break; case GetPortStatus: if (wIndex > r8a66597->max_root_hub) goto error; *(__le32 *)buf = cpu_to_le32(rh->port); break; case SetPortFeature: if (wIndex > r8a66597->max_root_hub) goto error; if (wLength != 0) goto error; switch (wValue) { case USB_PORT_FEAT_SUSPEND: break; case USB_PORT_FEAT_POWER: r8a66597_port_power(r8a66597, port, 1); rh->port |= USB_PORT_STAT_POWER; break; case USB_PORT_FEAT_RESET: { struct r8a66597_device *dev = rh->dev; rh->port |= USB_PORT_STAT_RESET; disable_r8a66597_pipe_all(r8a66597, dev); free_usb_address(r8a66597, dev, 1); r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT, get_dvstctr_reg(port)); mod_timer(&r8a66597->rh_timer, jiffies + msecs_to_jiffies(50)); } break; default: goto error; } rh->port |= 1 << wValue; break; default: error: ret = -EPIPE; break; } spin_unlock_irqrestore(&r8a66597->lock, flags); return ret; } #if defined(CONFIG_PM) static int r8a66597_bus_suspend(struct usb_hcd *hcd) { struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); int port; dev_dbg(&r8a66597->device0.udev->dev, "%s\n", __func__); for (port = 0; port < r8a66597->max_root_hub; port++) { struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; unsigned long dvstctr_reg = get_dvstctr_reg(port); if (!(rh->port & USB_PORT_STAT_ENABLE)) continue; dev_dbg(&rh->dev->udev->dev, "suspend port = %d\n", port); r8a66597_bclr(r8a66597, UACT, dvstctr_reg); /* suspend */ rh->port |= USB_PORT_STAT_SUSPEND; if (rh->dev->udev->do_remote_wakeup) { msleep(3); /* waiting last SOF */ r8a66597_bset(r8a66597, RWUPE, dvstctr_reg); r8a66597_write(r8a66597, ~BCHG, get_intsts_reg(port)); r8a66597_bset(r8a66597, BCHGE, get_intenb_reg(port)); } } r8a66597->bus_suspended = 1; return 0; } static int r8a66597_bus_resume(struct usb_hcd *hcd) { struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); int port; dev_dbg(&r8a66597->device0.udev->dev, "%s\n", __func__); for (port = 0; port < r8a66597->max_root_hub; port++) { struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; unsigned long dvstctr_reg = get_dvstctr_reg(port); if (!(rh->port & USB_PORT_STAT_SUSPEND)) continue; dev_dbg(&rh->dev->udev->dev, "resume port = %d\n", port); rh->port &= ~USB_PORT_STAT_SUSPEND; rh->port |= USB_PORT_STAT_C_SUSPEND << 16; r8a66597_mdfy(r8a66597, RESUME, RESUME | UACT, dvstctr_reg); msleep(USB_RESUME_TIMEOUT); r8a66597_mdfy(r8a66597, UACT, RESUME | UACT, dvstctr_reg); } return 0; } #else #define r8a66597_bus_suspend NULL #define r8a66597_bus_resume NULL #endif static const struct hc_driver r8a66597_hc_driver = { .description = hcd_name, .hcd_priv_size = sizeof(struct r8a66597), .irq = r8a66597_irq, /* * generic hardware linkage */ .flags = HCD_USB2, .start = r8a66597_start, .stop = r8a66597_stop, /* * managing i/o requests and associated device resources */ .urb_enqueue = r8a66597_urb_enqueue, .urb_dequeue = r8a66597_urb_dequeue, .endpoint_disable = r8a66597_endpoint_disable, /* * periodic schedule support */ .get_frame_number = r8a66597_get_frame, /* * root hub support */ .hub_status_data = r8a66597_hub_status_data, .hub_control = r8a66597_hub_control, .bus_suspend = r8a66597_bus_suspend, .bus_resume = r8a66597_bus_resume, }; #if defined(CONFIG_PM) static int r8a66597_suspend(struct device *dev) { struct r8a66597 *r8a66597 = dev_get_drvdata(dev); int port; dev_dbg(dev, "%s\n", __func__); disable_controller(r8a66597); for (port = 0; port < r8a66597->max_root_hub; port++) { struct r8a66597_root_hub *rh = &r8a66597->root_hub[port]; rh->port = 0x00000000; } return 0; } static int r8a66597_resume(struct device *dev) { struct r8a66597 *r8a66597 = dev_get_drvdata(dev); struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); dev_dbg(dev, "%s\n", __func__); enable_controller(r8a66597); usb_root_hub_lost_power(hcd->self.root_hub); return 0; } static const struct dev_pm_ops r8a66597_dev_pm_ops = { .suspend = r8a66597_suspend, .resume = r8a66597_resume, .poweroff = r8a66597_suspend, .restore = r8a66597_resume, }; #define R8A66597_DEV_PM_OPS (&r8a66597_dev_pm_ops) #else /* if defined(CONFIG_PM) */ #define R8A66597_DEV_PM_OPS NULL #endif static int r8a66597_remove(struct platform_device *pdev) { struct r8a66597 *r8a66597 = platform_get_drvdata(pdev); struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597); del_timer_sync(&r8a66597->rh_timer); usb_remove_hcd(hcd); iounmap(r8a66597->reg); if (r8a66597->pdata->on_chip) clk_put(r8a66597->clk); usb_put_hcd(hcd); return 0; } static int r8a66597_probe(struct platform_device *pdev) { char clk_name[8]; struct resource *res = NULL, *ires; int irq = -1; void __iomem *reg = NULL; struct usb_hcd *hcd = NULL; struct r8a66597 *r8a66597; int ret = 0; int i; unsigned long irq_trigger; if (usb_disabled()) return -ENODEV; if (pdev->dev.dma_mask) { ret = -EINVAL; dev_err(&pdev->dev, "dma not supported\n"); goto clean_up; } res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) { ret = -ENODEV; dev_err(&pdev->dev, "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; } irq = ires->start; irq_trigger = ires->flags & IRQF_TRIGGER_MASK; reg = ioremap(res->start, resource_size(res)); if (reg == NULL) { ret = -ENOMEM; dev_err(&pdev->dev, "ioremap error.\n"); goto clean_up; } if (pdev->dev.platform_data == NULL) { dev_err(&pdev->dev, "no platform data\n"); ret = -ENODEV; goto clean_up; } /* initialize hcd */ hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name); if (!hcd) { ret = -ENOMEM; dev_err(&pdev->dev, "Failed to create hcd\n"); goto clean_up; } r8a66597 = hcd_to_r8a66597(hcd); memset(r8a66597, 0, sizeof(struct r8a66597)); platform_set_drvdata(pdev, r8a66597); r8a66597->pdata = dev_get_platdata(&pdev->dev); r8a66597->irq_sense_low = irq_trigger == IRQF_TRIGGER_LOW; if (r8a66597->pdata->on_chip) { snprintf(clk_name, sizeof(clk_name), "usb%d", pdev->id); r8a66597->clk = clk_get(&pdev->dev, clk_name); if (IS_ERR(r8a66597->clk)) { dev_err(&pdev->dev, "cannot get clock \"%s\"\n", clk_name); ret = PTR_ERR(r8a66597->clk); goto clean_up2; } r8a66597->max_root_hub = 1; } else r8a66597->max_root_hub = 2; spin_lock_init(&r8a66597->lock); timer_setup(&r8a66597->rh_timer, r8a66597_timer, 0); r8a66597->reg = reg; /* make sure no interrupts are pending */ ret = r8a66597_clock_enable(r8a66597); if (ret < 0) goto clean_up3; disable_controller(r8a66597); for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) { INIT_LIST_HEAD(&r8a66597->pipe_queue[i]); r8a66597->timers[i].r8a66597 = r8a66597; timer_setup(&r8a66597->timers[i].td, r8a66597_td_timer, 0); timer_setup(&r8a66597->timers[i].interval, r8a66597_interval_timer, 0); } INIT_LIST_HEAD(&r8a66597->child_device); hcd->rsrc_start = res->start; hcd->has_tt = 1; ret = usb_add_hcd(hcd, irq, irq_trigger); if (ret != 0) { dev_err(&pdev->dev, "Failed to add hcd\n"); goto clean_up3; } device_wakeup_enable(hcd->self.controller); return 0; clean_up3: if (r8a66597->pdata->on_chip) clk_put(r8a66597->clk); clean_up2: usb_put_hcd(hcd); clean_up: if (reg) iounmap(reg); return ret; } static struct platform_driver r8a66597_driver = { .probe = r8a66597_probe, .remove = r8a66597_remove, .driver = { .name = hcd_name, .pm = R8A66597_DEV_PM_OPS, }, }; module_platform_driver(r8a66597_driver);
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