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2522 lines
62 KiB
2522 lines
62 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* R8A66597 HCD (Host Controller Driver) |
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* |
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* Copyright (C) 2006-2007 Renesas Solutions Corp. |
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* Portions Copyright (C) 2004 Psion Teklogix (for NetBook PRO) |
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* Portions Copyright (C) 2004-2005 David Brownell |
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* Portions Copyright (C) 1999 Roman Weissgaerber |
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* |
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* Author : Yoshihiro Shimoda <[email protected]> |
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*/ |
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|
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#include <linux/module.h> |
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#include <linux/kernel.h> |
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#include <linux/sched.h> |
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#include <linux/errno.h> |
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#include <linux/timer.h> |
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#include <linux/delay.h> |
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#include <linux/list.h> |
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#include <linux/interrupt.h> |
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#include <linux/usb.h> |
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#include <linux/usb/hcd.h> |
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#include <linux/platform_device.h> |
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#include <linux/io.h> |
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#include <linux/mm.h> |
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#include <linux/irq.h> |
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#include <linux/slab.h> |
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#include <asm/cacheflush.h> |
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#include "r8a66597.h" |
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MODULE_DESCRIPTION("R8A66597 USB Host Controller Driver"); |
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MODULE_LICENSE("GPL"); |
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MODULE_AUTHOR("Yoshihiro Shimoda"); |
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MODULE_ALIAS("platform:r8a66597_hcd"); |
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#define DRIVER_VERSION "2009-05-26" |
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static const char hcd_name[] = "r8a66597_hcd"; |
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|
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static void packet_write(struct r8a66597 *r8a66597, u16 pipenum); |
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static int r8a66597_get_frame(struct usb_hcd *hcd); |
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|
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/* this function must be called with interrupt disabled */ |
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static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum, |
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unsigned long reg) |
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{ |
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u16 tmp; |
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tmp = r8a66597_read(r8a66597, INTENB0); |
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r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0); |
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r8a66597_bset(r8a66597, 1 << pipenum, reg); |
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r8a66597_write(r8a66597, tmp, INTENB0); |
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} |
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|
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/* this function must be called with interrupt disabled */ |
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static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum, |
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unsigned long reg) |
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{ |
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u16 tmp; |
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|
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tmp = r8a66597_read(r8a66597, INTENB0); |
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r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0); |
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r8a66597_bclr(r8a66597, 1 << pipenum, reg); |
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r8a66597_write(r8a66597, tmp, INTENB0); |
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} |
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static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address, |
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u16 usbspd, u8 upphub, u8 hubport, int port) |
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{ |
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u16 val; |
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unsigned long devadd_reg = get_devadd_addr(r8a66597_address); |
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val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001); |
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r8a66597_write(r8a66597, val, devadd_reg); |
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} |
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static int r8a66597_clock_enable(struct r8a66597 *r8a66597) |
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{ |
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u16 tmp; |
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int i = 0; |
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|
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if (r8a66597->pdata->on_chip) { |
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clk_prepare_enable(r8a66597->clk); |
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do { |
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r8a66597_write(r8a66597, SCKE, SYSCFG0); |
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tmp = r8a66597_read(r8a66597, SYSCFG0); |
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if (i++ > 1000) { |
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printk(KERN_ERR "r8a66597: reg access fail.\n"); |
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return -ENXIO; |
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} |
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} while ((tmp & SCKE) != SCKE); |
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r8a66597_write(r8a66597, 0x04, 0x02); |
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} else { |
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do { |
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r8a66597_write(r8a66597, USBE, SYSCFG0); |
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tmp = r8a66597_read(r8a66597, SYSCFG0); |
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if (i++ > 1000) { |
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printk(KERN_ERR "r8a66597: reg access fail.\n"); |
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return -ENXIO; |
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} |
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} while ((tmp & USBE) != USBE); |
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r8a66597_bclr(r8a66597, USBE, SYSCFG0); |
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r8a66597_mdfy(r8a66597, get_xtal_from_pdata(r8a66597->pdata), |
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XTAL, SYSCFG0); |
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i = 0; |
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r8a66597_bset(r8a66597, XCKE, SYSCFG0); |
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do { |
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msleep(1); |
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tmp = r8a66597_read(r8a66597, SYSCFG0); |
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if (i++ > 500) { |
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printk(KERN_ERR "r8a66597: reg access fail.\n"); |
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return -ENXIO; |
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} |
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} while ((tmp & SCKE) != SCKE); |
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} |
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return 0; |
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} |
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static void r8a66597_clock_disable(struct r8a66597 *r8a66597) |
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{ |
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r8a66597_bclr(r8a66597, SCKE, SYSCFG0); |
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udelay(1); |
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|
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if (r8a66597->pdata->on_chip) { |
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clk_disable_unprepare(r8a66597->clk); |
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} else { |
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r8a66597_bclr(r8a66597, PLLC, SYSCFG0); |
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r8a66597_bclr(r8a66597, XCKE, SYSCFG0); |
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r8a66597_bclr(r8a66597, USBE, SYSCFG0); |
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} |
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} |
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static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port) |
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{ |
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u16 val; |
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val = port ? DRPD : DCFM | DRPD; |
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r8a66597_bset(r8a66597, val, get_syscfg_reg(port)); |
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r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port)); |
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r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port)); |
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r8a66597_bclr(r8a66597, DTCHE, get_intenb_reg(port)); |
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r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port)); |
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} |
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static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port) |
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{ |
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u16 val, tmp; |
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r8a66597_write(r8a66597, 0, get_intenb_reg(port)); |
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r8a66597_write(r8a66597, 0, get_intsts_reg(port)); |
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r8a66597_port_power(r8a66597, port, 0); |
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do { |
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tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS; |
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udelay(640); |
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} while (tmp == EDGESTS); |
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val = port ? DRPD : DCFM | DRPD; |
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r8a66597_bclr(r8a66597, val, get_syscfg_reg(port)); |
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r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port)); |
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} |
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static int enable_controller(struct r8a66597 *r8a66597) |
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{ |
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int ret, port; |
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u16 vif = r8a66597->pdata->vif ? LDRV : 0; |
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u16 irq_sense = r8a66597->irq_sense_low ? INTL : 0; |
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u16 endian = r8a66597->pdata->endian ? BIGEND : 0; |
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ret = r8a66597_clock_enable(r8a66597); |
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if (ret < 0) |
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return ret; |
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r8a66597_bset(r8a66597, vif & LDRV, PINCFG); |
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r8a66597_bset(r8a66597, USBE, SYSCFG0); |
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r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0); |
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r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG); |
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r8a66597_bset(r8a66597, BRDY0, BRDYENB); |
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r8a66597_bset(r8a66597, BEMP0, BEMPENB); |
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r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL); |
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r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL); |
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r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL); |
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r8a66597_bset(r8a66597, TRNENSEL, SOFCFG); |
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r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1); |
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for (port = 0; port < r8a66597->max_root_hub; port++) |
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r8a66597_enable_port(r8a66597, port); |
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return 0; |
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} |
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static void disable_controller(struct r8a66597 *r8a66597) |
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{ |
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int port; |
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/* disable interrupts */ |
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r8a66597_write(r8a66597, 0, INTENB0); |
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r8a66597_write(r8a66597, 0, INTENB1); |
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r8a66597_write(r8a66597, 0, BRDYENB); |
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r8a66597_write(r8a66597, 0, BEMPENB); |
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r8a66597_write(r8a66597, 0, NRDYENB); |
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/* clear status */ |
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r8a66597_write(r8a66597, 0, BRDYSTS); |
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r8a66597_write(r8a66597, 0, NRDYSTS); |
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r8a66597_write(r8a66597, 0, BEMPSTS); |
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for (port = 0; port < r8a66597->max_root_hub; port++) |
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r8a66597_disable_port(r8a66597, port); |
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r8a66597_clock_disable(r8a66597); |
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} |
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static int get_parent_r8a66597_address(struct r8a66597 *r8a66597, |
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struct usb_device *udev) |
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{ |
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struct r8a66597_device *dev; |
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if (udev->parent && udev->parent->devnum != 1) |
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udev = udev->parent; |
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dev = dev_get_drvdata(&udev->dev); |
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if (dev) |
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return dev->address; |
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else |
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return 0; |
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} |
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static int is_child_device(char *devpath) |
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{ |
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return (devpath[2] ? 1 : 0); |
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} |
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static int is_hub_limit(char *devpath) |
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{ |
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return ((strlen(devpath) >= 4) ? 1 : 0); |
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} |
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static void get_port_number(struct r8a66597 *r8a66597, |
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char *devpath, u16 *root_port, u16 *hub_port) |
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{ |
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if (root_port) { |
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*root_port = (devpath[0] & 0x0F) - 1; |
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if (*root_port >= r8a66597->max_root_hub) |
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printk(KERN_ERR "r8a66597: Illegal root port number.\n"); |
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} |
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if (hub_port) |
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*hub_port = devpath[2] & 0x0F; |
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} |
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static u16 get_r8a66597_usb_speed(enum usb_device_speed speed) |
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{ |
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u16 usbspd = 0; |
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switch (speed) { |
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case USB_SPEED_LOW: |
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usbspd = LSMODE; |
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break; |
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case USB_SPEED_FULL: |
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usbspd = FSMODE; |
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break; |
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case USB_SPEED_HIGH: |
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usbspd = HSMODE; |
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break; |
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default: |
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printk(KERN_ERR "r8a66597: unknown speed\n"); |
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break; |
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} |
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return usbspd; |
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} |
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static void set_child_connect_map(struct r8a66597 *r8a66597, int address) |
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{ |
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int idx; |
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idx = address / 32; |
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r8a66597->child_connect_map[idx] |= 1 << (address % 32); |
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} |
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static void put_child_connect_map(struct r8a66597 *r8a66597, int address) |
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{ |
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int idx; |
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idx = address / 32; |
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r8a66597->child_connect_map[idx] &= ~(1 << (address % 32)); |
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} |
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static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch) |
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{ |
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u16 pipenum = pipe->info.pipenum; |
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const unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO}; |
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const unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL}; |
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const unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR}; |
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if (dma_ch > R8A66597_PIPE_NO_DMA) /* dma fifo not use? */ |
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dma_ch = R8A66597_PIPE_NO_DMA; |
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pipe->fifoaddr = fifoaddr[dma_ch]; |
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pipe->fifosel = fifosel[dma_ch]; |
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pipe->fifoctr = fifoctr[dma_ch]; |
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if (pipenum == 0) |
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pipe->pipectr = DCPCTR; |
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else |
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pipe->pipectr = get_pipectr_addr(pipenum); |
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if (check_bulk_or_isoc(pipenum)) { |
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pipe->pipetre = get_pipetre_addr(pipenum); |
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pipe->pipetrn = get_pipetrn_addr(pipenum); |
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} else { |
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pipe->pipetre = 0; |
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pipe->pipetrn = 0; |
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} |
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} |
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static struct r8a66597_device * |
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get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb) |
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{ |
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if (usb_pipedevice(urb->pipe) == 0) |
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return &r8a66597->device0; |
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return dev_get_drvdata(&urb->dev->dev); |
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} |
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static int make_r8a66597_device(struct r8a66597 *r8a66597, |
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struct urb *urb, u8 addr) |
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{ |
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struct r8a66597_device *dev; |
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int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */ |
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dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC); |
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if (dev == NULL) |
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return -ENOMEM; |
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dev_set_drvdata(&urb->dev->dev, dev); |
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dev->udev = urb->dev; |
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dev->address = addr; |
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dev->usb_address = usb_address; |
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dev->state = USB_STATE_ADDRESS; |
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dev->ep_in_toggle = 0; |
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dev->ep_out_toggle = 0; |
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INIT_LIST_HEAD(&dev->device_list); |
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list_add_tail(&dev->device_list, &r8a66597->child_device); |
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get_port_number(r8a66597, urb->dev->devpath, |
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&dev->root_port, &dev->hub_port); |
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if (!is_child_device(urb->dev->devpath)) |
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r8a66597->root_hub[dev->root_port].dev = dev; |
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set_devadd_reg(r8a66597, dev->address, |
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get_r8a66597_usb_speed(urb->dev->speed), |
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get_parent_r8a66597_address(r8a66597, urb->dev), |
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dev->hub_port, dev->root_port); |
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|
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return 0; |
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} |
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/* this function must be called with interrupt disabled */ |
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static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb) |
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{ |
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u8 addr; /* R8A66597's address */ |
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struct r8a66597_device *dev; |
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|
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if (is_hub_limit(urb->dev->devpath)) { |
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dev_err(&urb->dev->dev, "External hub limit reached.\n"); |
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return 0; |
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} |
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dev = get_urb_to_r8a66597_dev(r8a66597, urb); |
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if (dev && dev->state >= USB_STATE_ADDRESS) |
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return dev->address; |
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for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) { |
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if (r8a66597->address_map & (1 << addr)) |
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continue; |
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dev_dbg(&urb->dev->dev, "alloc_address: r8a66597_addr=%d\n", addr); |
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r8a66597->address_map |= 1 << addr; |
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if (make_r8a66597_device(r8a66597, urb, addr) < 0) |
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return 0; |
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|
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return addr; |
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} |
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|
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dev_err(&urb->dev->dev, |
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"cannot communicate with a USB device more than 10.(%x)\n", |
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r8a66597->address_map); |
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return 0; |
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} |
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|
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/* this function must be called with interrupt disabled */ |
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static void free_usb_address(struct r8a66597 *r8a66597, |
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struct r8a66597_device *dev, int reset) |
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{ |
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int port; |
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|
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if (!dev) |
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return; |
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|
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dev_dbg(&dev->udev->dev, "free_addr: addr=%d\n", dev->address); |
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|
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dev->state = USB_STATE_DEFAULT; |
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r8a66597->address_map &= ~(1 << dev->address); |
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dev->address = 0; |
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/* |
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* Only when resetting USB, it is necessary to erase drvdata. When |
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* a usb device with usb hub is disconnect, "dev->udev" is already |
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* freed on usb_desconnect(). So we cannot access the data. |
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*/ |
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if (reset) |
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dev_set_drvdata(&dev->udev->dev, NULL); |
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list_del(&dev->device_list); |
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kfree(dev); |
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|
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for (port = 0; port < r8a66597->max_root_hub; port++) { |
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if (r8a66597->root_hub[port].dev == dev) { |
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r8a66597->root_hub[port].dev = NULL; |
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break; |
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} |
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} |
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} |
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|
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static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg, |
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u16 mask, u16 loop) |
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{ |
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u16 tmp; |
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int i = 0; |
|
|
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do { |
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tmp = r8a66597_read(r8a66597, reg); |
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if (i++ > 1000000) { |
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printk(KERN_ERR "r8a66597: register%lx, loop %x " |
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"is timeout\n", reg, loop); |
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break; |
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} |
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ndelay(1); |
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} while ((tmp & mask) != loop); |
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} |
|
|
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/* this function must be called with interrupt disabled */ |
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static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe) |
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{ |
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u16 tmp; |
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|
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tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID; |
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if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */ |
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r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr); |
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r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr); |
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} |
|
|
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/* this function must be called with interrupt disabled */ |
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static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe) |
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{ |
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u16 tmp; |
|
|
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tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID; |
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if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */ |
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r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr); |
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r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr); |
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r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0); |
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} |
|
|
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/* this function must be called with interrupt disabled */ |
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static void clear_all_buffer(struct r8a66597 *r8a66597, |
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struct r8a66597_pipe *pipe) |
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{ |
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if (!pipe || pipe->info.pipenum == 0) |
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return; |
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|
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pipe_stop(r8a66597, pipe); |
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r8a66597_bset(r8a66597, ACLRM, pipe->pipectr); |
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r8a66597_read(r8a66597, pipe->pipectr); |
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r8a66597_read(r8a66597, pipe->pipectr); |
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r8a66597_read(r8a66597, pipe->pipectr); |
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r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr); |
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} |
|
|
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/* this function must be called with interrupt disabled */ |
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static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597, |
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struct r8a66597_pipe *pipe, int toggle) |
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{ |
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if (toggle) |
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r8a66597_bset(r8a66597, SQSET, pipe->pipectr); |
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else |
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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; |
|
|
|
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);
|
|
|