![Sachin Sant](/assets/img/avatar_default.png)
Replace references to bus_id with dev_name() to fix fhci driver build break. drivers/usb/host/fhci-hcd.c:586: error: struct device has no member named bus_id drivers/usb/host/fhci-hcd.c:653: error: struct device has no member named bus_id drivers/usb/host/fhci-dbg.c:111: error: struct device has no member named bus_id Signed-off-by: Sachin Sant <sachinp@in.ibm.com> Acked-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
837 lines
19 KiB
C
837 lines
19 KiB
C
/*
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* Freescale QUICC Engine USB Host Controller Driver
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*
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* Copyright (c) Freescale Semicondutor, Inc. 2006.
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* Shlomi Gridish <gridish@freescale.com>
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* Jerry Huang <Chang-Ming.Huang@freescale.com>
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* Copyright (c) Logic Product Development, Inc. 2007
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* Peter Barada <peterb@logicpd.com>
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* Copyright (c) MontaVista Software, Inc. 2008.
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* Anton Vorontsov <avorontsov@ru.mvista.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/spinlock.h>
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#include <linux/kernel.h>
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#include <linux/delay.h>
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#include <linux/errno.h>
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#include <linux/list.h>
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#include <linux/interrupt.h>
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#include <linux/io.h>
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#include <linux/usb.h>
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#include <linux/of_platform.h>
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#include <linux/of_gpio.h>
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#include <asm/qe.h>
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#include <asm/fsl_gtm.h>
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#include "../core/hcd.h"
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#include "fhci.h"
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void fhci_start_sof_timer(struct fhci_hcd *fhci)
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{
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fhci_dbg(fhci, "-> %s\n", __func__);
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/* clear frame_n */
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out_be16(&fhci->pram->frame_num, 0);
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out_be16(&fhci->regs->usb_sof_tmr, 0);
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setbits8(&fhci->regs->usb_mod, USB_MODE_SFTE);
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fhci_dbg(fhci, "<- %s\n", __func__);
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}
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void fhci_stop_sof_timer(struct fhci_hcd *fhci)
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{
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fhci_dbg(fhci, "-> %s\n", __func__);
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clrbits8(&fhci->regs->usb_mod, USB_MODE_SFTE);
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gtm_stop_timer16(fhci->timer);
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fhci_dbg(fhci, "<- %s\n", __func__);
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}
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u16 fhci_get_sof_timer_count(struct fhci_usb *usb)
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{
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return be16_to_cpu(in_be16(&usb->fhci->regs->usb_sof_tmr) / 12);
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}
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/* initialize the endpoint zero */
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static u32 endpoint_zero_init(struct fhci_usb *usb,
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enum fhci_mem_alloc data_mem,
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u32 ring_len)
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{
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u32 rc;
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rc = fhci_create_ep(usb, data_mem, ring_len);
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if (rc)
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return rc;
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/* inilialize endpoint registers */
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fhci_init_ep_registers(usb, usb->ep0, data_mem);
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return 0;
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}
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/* enable the USB interrupts */
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void fhci_usb_enable_interrupt(struct fhci_usb *usb)
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{
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struct fhci_hcd *fhci = usb->fhci;
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if (usb->intr_nesting_cnt == 1) {
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/* initialize the USB interrupt */
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enable_irq(fhci_to_hcd(fhci)->irq);
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/* initialize the event register and mask register */
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out_be16(&usb->fhci->regs->usb_event, 0xffff);
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out_be16(&usb->fhci->regs->usb_mask, usb->saved_msk);
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/* enable the timer interrupts */
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enable_irq(fhci->timer->irq);
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} else if (usb->intr_nesting_cnt > 1)
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fhci_info(fhci, "unbalanced USB interrupts nesting\n");
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usb->intr_nesting_cnt--;
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}
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/* diable the usb interrupt */
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void fhci_usb_disable_interrupt(struct fhci_usb *usb)
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{
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struct fhci_hcd *fhci = usb->fhci;
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if (usb->intr_nesting_cnt == 0) {
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/* diable the timer interrupt */
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disable_irq_nosync(fhci->timer->irq);
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/* disable the usb interrupt */
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disable_irq_nosync(fhci_to_hcd(fhci)->irq);
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out_be16(&usb->fhci->regs->usb_mask, 0);
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}
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usb->intr_nesting_cnt++;
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}
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/* enable the USB controller */
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static u32 fhci_usb_enable(struct fhci_hcd *fhci)
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{
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struct fhci_usb *usb = fhci->usb_lld;
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out_be16(&usb->fhci->regs->usb_event, 0xffff);
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out_be16(&usb->fhci->regs->usb_mask, usb->saved_msk);
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setbits8(&usb->fhci->regs->usb_mod, USB_MODE_EN);
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mdelay(100);
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return 0;
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}
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/* disable the USB controller */
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static u32 fhci_usb_disable(struct fhci_hcd *fhci)
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{
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struct fhci_usb *usb = fhci->usb_lld;
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fhci_usb_disable_interrupt(usb);
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fhci_port_disable(fhci);
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/* disable the usb controller */
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if (usb->port_status == FHCI_PORT_FULL ||
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usb->port_status == FHCI_PORT_LOW)
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fhci_device_disconnected_interrupt(fhci);
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clrbits8(&usb->fhci->regs->usb_mod, USB_MODE_EN);
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return 0;
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}
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/* check the bus state by polling the QE bit on the IO ports */
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int fhci_ioports_check_bus_state(struct fhci_hcd *fhci)
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{
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u8 bits = 0;
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/* check USBOE,if transmitting,exit */
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if (!gpio_get_value(fhci->gpios[GPIO_USBOE]))
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return -1;
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/* check USBRP */
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if (gpio_get_value(fhci->gpios[GPIO_USBRP]))
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bits |= 0x2;
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/* check USBRN */
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if (gpio_get_value(fhci->gpios[GPIO_USBRN]))
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bits |= 0x1;
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return bits;
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}
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static void fhci_mem_free(struct fhci_hcd *fhci)
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{
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struct ed *ed;
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struct ed *next_ed;
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struct td *td;
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struct td *next_td;
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list_for_each_entry_safe(ed, next_ed, &fhci->empty_eds, node) {
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list_del(&ed->node);
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kfree(ed);
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}
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list_for_each_entry_safe(td, next_td, &fhci->empty_tds, node) {
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list_del(&td->node);
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kfree(td);
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}
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kfree(fhci->vroot_hub);
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fhci->vroot_hub = NULL;
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kfree(fhci->hc_list);
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fhci->hc_list = NULL;
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}
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static int fhci_mem_init(struct fhci_hcd *fhci)
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{
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int i;
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fhci->hc_list = kzalloc(sizeof(*fhci->hc_list), GFP_KERNEL);
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if (!fhci->hc_list)
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goto err;
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INIT_LIST_HEAD(&fhci->hc_list->ctrl_list);
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INIT_LIST_HEAD(&fhci->hc_list->bulk_list);
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INIT_LIST_HEAD(&fhci->hc_list->iso_list);
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INIT_LIST_HEAD(&fhci->hc_list->intr_list);
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INIT_LIST_HEAD(&fhci->hc_list->done_list);
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fhci->vroot_hub = kzalloc(sizeof(*fhci->vroot_hub), GFP_KERNEL);
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if (!fhci->vroot_hub)
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goto err;
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INIT_LIST_HEAD(&fhci->empty_eds);
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INIT_LIST_HEAD(&fhci->empty_tds);
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/* initialize work queue to handle done list */
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fhci_tasklet.data = (unsigned long)fhci;
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fhci->process_done_task = &fhci_tasklet;
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for (i = 0; i < MAX_TDS; i++) {
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struct td *td;
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td = kmalloc(sizeof(*td), GFP_KERNEL);
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if (!td)
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goto err;
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fhci_recycle_empty_td(fhci, td);
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}
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for (i = 0; i < MAX_EDS; i++) {
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struct ed *ed;
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ed = kmalloc(sizeof(*ed), GFP_KERNEL);
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if (!ed)
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goto err;
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fhci_recycle_empty_ed(fhci, ed);
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}
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fhci->active_urbs = 0;
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return 0;
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err:
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fhci_mem_free(fhci);
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return -ENOMEM;
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}
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/* destroy the fhci_usb structure */
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static void fhci_usb_free(void *lld)
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{
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struct fhci_usb *usb = lld;
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struct fhci_hcd *fhci = usb->fhci;
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if (usb) {
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fhci_config_transceiver(fhci, FHCI_PORT_POWER_OFF);
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fhci_ep0_free(usb);
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kfree(usb->actual_frame);
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kfree(usb);
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}
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}
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/* initialize the USB */
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static int fhci_usb_init(struct fhci_hcd *fhci)
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{
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struct fhci_usb *usb = fhci->usb_lld;
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memset_io(usb->fhci->pram, 0, FHCI_PRAM_SIZE);
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usb->port_status = FHCI_PORT_DISABLED;
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usb->max_frame_usage = FRAME_TIME_USAGE;
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usb->sw_transaction_time = SW_FIX_TIME_BETWEEN_TRANSACTION;
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usb->actual_frame = kzalloc(sizeof(*usb->actual_frame), GFP_KERNEL);
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if (!usb->actual_frame) {
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fhci_usb_free(usb);
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return -ENOMEM;
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}
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INIT_LIST_HEAD(&usb->actual_frame->tds_list);
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/* initializing registers on chip, clear frame number */
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out_be16(&fhci->pram->frame_num, 0);
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/* clear rx state */
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out_be32(&fhci->pram->rx_state, 0);
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/* set mask register */
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usb->saved_msk = (USB_E_TXB_MASK |
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USB_E_TXE1_MASK |
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USB_E_IDLE_MASK |
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USB_E_RESET_MASK | USB_E_SFT_MASK | USB_E_MSF_MASK);
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out_8(&usb->fhci->regs->usb_mod, USB_MODE_HOST | USB_MODE_EN);
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/* clearing the mask register */
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out_be16(&usb->fhci->regs->usb_mask, 0);
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/* initialing the event register */
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out_be16(&usb->fhci->regs->usb_event, 0xffff);
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if (endpoint_zero_init(usb, DEFAULT_DATA_MEM, DEFAULT_RING_LEN) != 0) {
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fhci_usb_free(usb);
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return -EINVAL;
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}
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return 0;
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}
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/* initialize the fhci_usb struct and the corresponding data staruct */
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static struct fhci_usb *fhci_create_lld(struct fhci_hcd *fhci)
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{
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struct fhci_usb *usb;
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/* allocate memory for SCC data structure */
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usb = kzalloc(sizeof(*usb), GFP_KERNEL);
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if (!usb) {
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fhci_err(fhci, "no memory for SCC data struct\n");
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return NULL;
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}
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usb->fhci = fhci;
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usb->hc_list = fhci->hc_list;
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usb->vroot_hub = fhci->vroot_hub;
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usb->transfer_confirm = fhci_transfer_confirm_callback;
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return usb;
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}
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static int fhci_start(struct usb_hcd *hcd)
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{
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int ret;
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struct fhci_hcd *fhci = hcd_to_fhci(hcd);
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ret = fhci_mem_init(fhci);
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if (ret) {
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fhci_err(fhci, "failed to allocate memory\n");
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goto err;
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}
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fhci->usb_lld = fhci_create_lld(fhci);
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if (!fhci->usb_lld) {
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fhci_err(fhci, "low level driver config failed\n");
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ret = -ENOMEM;
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goto err;
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}
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ret = fhci_usb_init(fhci);
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if (ret) {
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fhci_err(fhci, "low level driver initialize failed\n");
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goto err;
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}
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spin_lock_init(&fhci->lock);
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/* connect the virtual root hub */
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fhci->vroot_hub->dev_num = 1; /* this field may be needed to fix */
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fhci->vroot_hub->hub.wHubStatus = 0;
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fhci->vroot_hub->hub.wHubChange = 0;
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fhci->vroot_hub->port.wPortStatus = 0;
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fhci->vroot_hub->port.wPortChange = 0;
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hcd->state = HC_STATE_RUNNING;
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/*
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* From here on, khubd concurrently accesses the root
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* hub; drivers will be talking to enumerated devices.
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* (On restart paths, khubd already knows about the root
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* hub and could find work as soon as we wrote FLAG_CF.)
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*
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* Before this point the HC was idle/ready. After, khubd
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* and device drivers may start it running.
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*/
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fhci_usb_enable(fhci);
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return 0;
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err:
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fhci_mem_free(fhci);
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return ret;
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}
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static void fhci_stop(struct usb_hcd *hcd)
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{
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struct fhci_hcd *fhci = hcd_to_fhci(hcd);
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fhci_usb_disable_interrupt(fhci->usb_lld);
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fhci_usb_disable(fhci);
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fhci_usb_free(fhci->usb_lld);
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fhci->usb_lld = NULL;
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fhci_mem_free(fhci);
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}
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static int fhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
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gfp_t mem_flags)
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{
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struct fhci_hcd *fhci = hcd_to_fhci(hcd);
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u32 pipe = urb->pipe;
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int ret;
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int i;
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int size = 0;
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struct urb_priv *urb_priv;
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unsigned long flags;
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switch (usb_pipetype(pipe)) {
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case PIPE_CONTROL:
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/* 1 td fro setup,1 for ack */
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size = 2;
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case PIPE_BULK:
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/* one td for every 4096 bytes(can be upto 8k) */
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size += urb->transfer_buffer_length / 4096;
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/* ...add for any remaining bytes... */
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if ((urb->transfer_buffer_length % 4096) != 0)
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size++;
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/* ..and maybe a zero length packet to wrap it up */
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if (size == 0)
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size++;
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else if ((urb->transfer_flags & URB_ZERO_PACKET) != 0
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&& (urb->transfer_buffer_length
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% usb_maxpacket(urb->dev, pipe,
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usb_pipeout(pipe))) != 0)
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size++;
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break;
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case PIPE_ISOCHRONOUS:
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size = urb->number_of_packets;
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if (size <= 0)
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return -EINVAL;
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for (i = 0; i < urb->number_of_packets; i++) {
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urb->iso_frame_desc[i].actual_length = 0;
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urb->iso_frame_desc[i].status = (u32) (-EXDEV);
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}
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break;
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case PIPE_INTERRUPT:
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size = 1;
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}
|
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|
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/* allocate the private part of the URB */
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urb_priv = kzalloc(sizeof(*urb_priv), mem_flags);
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if (!urb_priv)
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return -ENOMEM;
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|
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/* allocate the private part of the URB */
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urb_priv->tds = kzalloc(size * sizeof(struct td), mem_flags);
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if (!urb_priv->tds) {
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kfree(urb_priv);
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return -ENOMEM;
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}
|
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|
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spin_lock_irqsave(&fhci->lock, flags);
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|
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ret = usb_hcd_link_urb_to_ep(hcd, urb);
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if (ret)
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goto err;
|
|
|
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/* fill the private part of the URB */
|
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urb_priv->num_of_tds = size;
|
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|
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urb->status = -EINPROGRESS;
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urb->actual_length = 0;
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urb->error_count = 0;
|
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urb->hcpriv = urb_priv;
|
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|
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fhci_queue_urb(fhci, urb);
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err:
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if (ret) {
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kfree(urb_priv->tds);
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kfree(urb_priv);
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}
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spin_unlock_irqrestore(&fhci->lock, flags);
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return ret;
|
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}
|
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|
|
/* dequeue FHCI URB */
|
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static int fhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
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{
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struct fhci_hcd *fhci = hcd_to_fhci(hcd);
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struct fhci_usb *usb = fhci->usb_lld;
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int ret = -EINVAL;
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unsigned long flags;
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if (!urb || !urb->dev || !urb->dev->bus)
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goto out;
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spin_lock_irqsave(&fhci->lock, flags);
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ret = usb_hcd_check_unlink_urb(hcd, urb, status);
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if (ret)
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goto out2;
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|
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if (usb->port_status != FHCI_PORT_DISABLED) {
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struct urb_priv *urb_priv;
|
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|
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/*
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* flag the urb's data for deletion in some upcoming
|
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* SF interrupt's delete list processing
|
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*/
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urb_priv = urb->hcpriv;
|
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|
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if (!urb_priv || (urb_priv->state == URB_DEL))
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goto out2;
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urb_priv->state = URB_DEL;
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|
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/* already pending? */
|
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urb_priv->ed->state = FHCI_ED_URB_DEL;
|
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} else {
|
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fhci_urb_complete_free(fhci, urb);
|
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}
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|
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out2:
|
|
spin_unlock_irqrestore(&fhci->lock, flags);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static void fhci_endpoint_disable(struct usb_hcd *hcd,
|
|
struct usb_host_endpoint *ep)
|
|
{
|
|
struct fhci_hcd *fhci;
|
|
struct ed *ed;
|
|
unsigned long flags;
|
|
|
|
fhci = hcd_to_fhci(hcd);
|
|
spin_lock_irqsave(&fhci->lock, flags);
|
|
ed = ep->hcpriv;
|
|
if (ed) {
|
|
while (ed->td_head != NULL) {
|
|
struct td *td = fhci_remove_td_from_ed(ed);
|
|
fhci_urb_complete_free(fhci, td->urb);
|
|
}
|
|
fhci_recycle_empty_ed(fhci, ed);
|
|
ep->hcpriv = NULL;
|
|
}
|
|
spin_unlock_irqrestore(&fhci->lock, flags);
|
|
}
|
|
|
|
static int fhci_get_frame_number(struct usb_hcd *hcd)
|
|
{
|
|
struct fhci_hcd *fhci = hcd_to_fhci(hcd);
|
|
|
|
return get_frame_num(fhci);
|
|
}
|
|
|
|
static const struct hc_driver fhci_driver = {
|
|
.description = "fsl,usb-fhci",
|
|
.product_desc = "FHCI HOST Controller",
|
|
.hcd_priv_size = sizeof(struct fhci_hcd),
|
|
|
|
/* generic hardware linkage */
|
|
.irq = fhci_irq,
|
|
.flags = HCD_USB11 | HCD_MEMORY,
|
|
|
|
/* basic lifecycle operation */
|
|
.start = fhci_start,
|
|
.stop = fhci_stop,
|
|
|
|
/* managing i/o requests and associated device resources */
|
|
.urb_enqueue = fhci_urb_enqueue,
|
|
.urb_dequeue = fhci_urb_dequeue,
|
|
.endpoint_disable = fhci_endpoint_disable,
|
|
|
|
/* scheduling support */
|
|
.get_frame_number = fhci_get_frame_number,
|
|
|
|
/* root hub support */
|
|
.hub_status_data = fhci_hub_status_data,
|
|
.hub_control = fhci_hub_control,
|
|
};
|
|
|
|
static int __devinit of_fhci_probe(struct of_device *ofdev,
|
|
const struct of_device_id *ofid)
|
|
{
|
|
struct device *dev = &ofdev->dev;
|
|
struct device_node *node = ofdev->node;
|
|
struct usb_hcd *hcd;
|
|
struct fhci_hcd *fhci;
|
|
struct resource usb_regs;
|
|
unsigned long pram_addr;
|
|
unsigned int usb_irq;
|
|
const char *sprop;
|
|
const u32 *iprop;
|
|
int size;
|
|
int ret;
|
|
int i;
|
|
int j;
|
|
|
|
if (usb_disabled())
|
|
return -ENODEV;
|
|
|
|
sprop = of_get_property(node, "mode", NULL);
|
|
if (sprop && strcmp(sprop, "host"))
|
|
return -ENODEV;
|
|
|
|
hcd = usb_create_hcd(&fhci_driver, dev, dev_name(dev));
|
|
if (!hcd) {
|
|
dev_err(dev, "could not create hcd\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
fhci = hcd_to_fhci(hcd);
|
|
hcd->self.controller = dev;
|
|
dev_set_drvdata(dev, hcd);
|
|
|
|
iprop = of_get_property(node, "hub-power-budget", &size);
|
|
if (iprop && size == sizeof(*iprop))
|
|
hcd->power_budget = *iprop;
|
|
|
|
/* FHCI registers. */
|
|
ret = of_address_to_resource(node, 0, &usb_regs);
|
|
if (ret) {
|
|
dev_err(dev, "could not get regs\n");
|
|
goto err_regs;
|
|
}
|
|
|
|
hcd->regs = ioremap(usb_regs.start, usb_regs.end - usb_regs.start + 1);
|
|
if (!hcd->regs) {
|
|
dev_err(dev, "could not ioremap regs\n");
|
|
ret = -ENOMEM;
|
|
goto err_regs;
|
|
}
|
|
fhci->regs = hcd->regs;
|
|
|
|
/* Parameter RAM. */
|
|
iprop = of_get_property(node, "reg", &size);
|
|
if (!iprop || size < sizeof(*iprop) * 4) {
|
|
dev_err(dev, "can't get pram offset\n");
|
|
ret = -EINVAL;
|
|
goto err_pram;
|
|
}
|
|
|
|
pram_addr = cpm_muram_alloc_fixed(iprop[2], FHCI_PRAM_SIZE);
|
|
if (IS_ERR_VALUE(pram_addr)) {
|
|
dev_err(dev, "failed to allocate usb pram\n");
|
|
ret = -ENOMEM;
|
|
goto err_pram;
|
|
}
|
|
fhci->pram = cpm_muram_addr(pram_addr);
|
|
|
|
/* GPIOs and pins */
|
|
for (i = 0; i < NUM_GPIOS; i++) {
|
|
int gpio;
|
|
enum of_gpio_flags flags;
|
|
|
|
gpio = of_get_gpio_flags(node, i, &flags);
|
|
fhci->gpios[i] = gpio;
|
|
fhci->alow_gpios[i] = flags & OF_GPIO_ACTIVE_LOW;
|
|
|
|
if (!gpio_is_valid(gpio)) {
|
|
if (i < GPIO_SPEED) {
|
|
dev_err(dev, "incorrect GPIO%d: %d\n",
|
|
i, gpio);
|
|
goto err_gpios;
|
|
} else {
|
|
dev_info(dev, "assuming board doesn't have "
|
|
"%s gpio\n", i == GPIO_SPEED ?
|
|
"speed" : "power");
|
|
continue;
|
|
}
|
|
}
|
|
|
|
ret = gpio_request(gpio, dev_name(dev));
|
|
if (ret) {
|
|
dev_err(dev, "failed to request gpio %d", i);
|
|
goto err_gpios;
|
|
}
|
|
|
|
if (i >= GPIO_SPEED) {
|
|
ret = gpio_direction_output(gpio, 0);
|
|
if (ret) {
|
|
dev_err(dev, "failed to set gpio %d as "
|
|
"an output\n", i);
|
|
i++;
|
|
goto err_gpios;
|
|
}
|
|
}
|
|
}
|
|
|
|
for (j = 0; j < NUM_PINS; j++) {
|
|
fhci->pins[j] = qe_pin_request(ofdev->node, j);
|
|
if (IS_ERR(fhci->pins[j])) {
|
|
ret = PTR_ERR(fhci->pins[j]);
|
|
dev_err(dev, "can't get pin %d: %d\n", j, ret);
|
|
goto err_pins;
|
|
}
|
|
}
|
|
|
|
/* Frame limit timer and its interrupt. */
|
|
fhci->timer = gtm_get_timer16();
|
|
if (IS_ERR(fhci->timer)) {
|
|
ret = PTR_ERR(fhci->timer);
|
|
dev_err(dev, "failed to request qe timer: %i", ret);
|
|
goto err_get_timer;
|
|
}
|
|
|
|
ret = request_irq(fhci->timer->irq, fhci_frame_limit_timer_irq,
|
|
IRQF_DISABLED, "qe timer (usb)", hcd);
|
|
if (ret) {
|
|
dev_err(dev, "failed to request timer irq");
|
|
goto err_timer_irq;
|
|
}
|
|
|
|
/* USB Host interrupt. */
|
|
usb_irq = irq_of_parse_and_map(node, 0);
|
|
if (usb_irq == NO_IRQ) {
|
|
dev_err(dev, "could not get usb irq\n");
|
|
ret = -EINVAL;
|
|
goto err_usb_irq;
|
|
}
|
|
|
|
/* Clocks. */
|
|
sprop = of_get_property(node, "fsl,fullspeed-clock", NULL);
|
|
if (sprop) {
|
|
fhci->fullspeed_clk = qe_clock_source(sprop);
|
|
if (fhci->fullspeed_clk == QE_CLK_DUMMY) {
|
|
dev_err(dev, "wrong fullspeed-clock\n");
|
|
ret = -EINVAL;
|
|
goto err_clocks;
|
|
}
|
|
}
|
|
|
|
sprop = of_get_property(node, "fsl,lowspeed-clock", NULL);
|
|
if (sprop) {
|
|
fhci->lowspeed_clk = qe_clock_source(sprop);
|
|
if (fhci->lowspeed_clk == QE_CLK_DUMMY) {
|
|
dev_err(dev, "wrong lowspeed-clock\n");
|
|
ret = -EINVAL;
|
|
goto err_clocks;
|
|
}
|
|
}
|
|
|
|
if (fhci->fullspeed_clk == QE_CLK_NONE &&
|
|
fhci->lowspeed_clk == QE_CLK_NONE) {
|
|
dev_err(dev, "no clocks specified\n");
|
|
ret = -EINVAL;
|
|
goto err_clocks;
|
|
}
|
|
|
|
dev_info(dev, "at 0x%p, irq %d\n", hcd->regs, usb_irq);
|
|
|
|
fhci_config_transceiver(fhci, FHCI_PORT_POWER_OFF);
|
|
|
|
/* Start with full-speed, if possible. */
|
|
if (fhci->fullspeed_clk != QE_CLK_NONE) {
|
|
fhci_config_transceiver(fhci, FHCI_PORT_FULL);
|
|
qe_usb_clock_set(fhci->fullspeed_clk, USB_CLOCK);
|
|
} else {
|
|
fhci_config_transceiver(fhci, FHCI_PORT_LOW);
|
|
qe_usb_clock_set(fhci->lowspeed_clk, USB_CLOCK >> 3);
|
|
}
|
|
|
|
/* Clear and disable any pending interrupts. */
|
|
out_be16(&fhci->regs->usb_event, 0xffff);
|
|
out_be16(&fhci->regs->usb_mask, 0);
|
|
|
|
ret = usb_add_hcd(hcd, usb_irq, IRQF_DISABLED);
|
|
if (ret < 0)
|
|
goto err_add_hcd;
|
|
|
|
fhci_dfs_create(fhci);
|
|
|
|
return 0;
|
|
|
|
err_add_hcd:
|
|
err_clocks:
|
|
irq_dispose_mapping(usb_irq);
|
|
err_usb_irq:
|
|
free_irq(fhci->timer->irq, hcd);
|
|
err_timer_irq:
|
|
gtm_put_timer16(fhci->timer);
|
|
err_get_timer:
|
|
err_pins:
|
|
while (--j >= 0)
|
|
qe_pin_free(fhci->pins[j]);
|
|
err_gpios:
|
|
while (--i >= 0) {
|
|
if (gpio_is_valid(fhci->gpios[i]))
|
|
gpio_free(fhci->gpios[i]);
|
|
}
|
|
cpm_muram_free(pram_addr);
|
|
err_pram:
|
|
iounmap(hcd->regs);
|
|
err_regs:
|
|
usb_put_hcd(hcd);
|
|
return ret;
|
|
}
|
|
|
|
static int __devexit fhci_remove(struct device *dev)
|
|
{
|
|
struct usb_hcd *hcd = dev_get_drvdata(dev);
|
|
struct fhci_hcd *fhci = hcd_to_fhci(hcd);
|
|
int i;
|
|
int j;
|
|
|
|
usb_remove_hcd(hcd);
|
|
free_irq(fhci->timer->irq, hcd);
|
|
gtm_put_timer16(fhci->timer);
|
|
cpm_muram_free(cpm_muram_offset(fhci->pram));
|
|
for (i = 0; i < NUM_GPIOS; i++) {
|
|
if (!gpio_is_valid(fhci->gpios[i]))
|
|
continue;
|
|
gpio_free(fhci->gpios[i]);
|
|
}
|
|
for (j = 0; j < NUM_PINS; j++)
|
|
qe_pin_free(fhci->pins[j]);
|
|
fhci_dfs_destroy(fhci);
|
|
usb_put_hcd(hcd);
|
|
return 0;
|
|
}
|
|
|
|
static int __devexit of_fhci_remove(struct of_device *ofdev)
|
|
{
|
|
return fhci_remove(&ofdev->dev);
|
|
}
|
|
|
|
static struct of_device_id of_fhci_match[] = {
|
|
{ .compatible = "fsl,mpc8323-qe-usb", },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, of_fhci_match);
|
|
|
|
static struct of_platform_driver of_fhci_driver = {
|
|
.name = "fsl,usb-fhci",
|
|
.match_table = of_fhci_match,
|
|
.probe = of_fhci_probe,
|
|
.remove = __devexit_p(of_fhci_remove),
|
|
};
|
|
|
|
static int __init fhci_module_init(void)
|
|
{
|
|
return of_register_platform_driver(&of_fhci_driver);
|
|
}
|
|
module_init(fhci_module_init);
|
|
|
|
static void __exit fhci_module_exit(void)
|
|
{
|
|
of_unregister_platform_driver(&of_fhci_driver);
|
|
}
|
|
module_exit(fhci_module_exit);
|
|
|
|
MODULE_DESCRIPTION("USB Freescale Host Controller Interface Driver");
|
|
MODULE_AUTHOR("Shlomi Gridish <gridish@freescale.com>, "
|
|
"Jerry Huang <Chang-Ming.Huang@freescale.com>, "
|
|
"Anton Vorontsov <avorontsov@ru.mvista.com>");
|
|
MODULE_LICENSE("GPL");
|