From d1dcdf5718977c93805f9300b6c79f039db84c8b Mon Sep 17 00:00:00 2001 From: merge Date: Fri, 6 Feb 2009 00:22:54 +0000 Subject: MERGE-via-pending-tracking-hist-MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011-1233879414-1233879505 pending-tracking-hist top was MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011-1233879414-1233879505 / 1c405b6ccee468298e7ccbfd9a3a3f4d123207b0 ... parent commitmessage: From: merge MERGE-via-stable-tracking-hist-MERGE-via-mokopatches-tracking-MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011-1233879414 stable-tracking-hist top was MERGE-via-mokopatches-tracking-MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011-1233879414 / 71be0a45396066b1f8f27f8f4f87937247a129e1 ... parent commitmessage: From: merge MERGE-via-mokopatches-tracking-hist-MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011 mokopatches-tracking-hist top was MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011 / 1be1b01373f572a02c6f1f99863c8c11ed2f9f5b ... parent commitmessage: From: merge MERGE-via-master-MERGE-via-master-hist-1232625318 master top was MERGE-via-master-hist-1232625318 / dd4b117123ae66451695810017eb72fbdfc05df5 ... parent commitmessage: From: merge MERGE-master-patchset-edits --- drivers/usb/host/fhci-hcd.c | 836 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 836 insertions(+) create mode 100644 drivers/usb/host/fhci-hcd.c (limited to 'drivers/usb/host/fhci-hcd.c') diff --git a/drivers/usb/host/fhci-hcd.c b/drivers/usb/host/fhci-hcd.c new file mode 100644 index 00000000000..ba622cc8a9b --- /dev/null +++ b/drivers/usb/host/fhci-hcd.c @@ -0,0 +1,836 @@ +/* + * Freescale QUICC Engine USB Host Controller Driver + * + * Copyright (c) Freescale Semicondutor, Inc. 2006. + * Shlomi Gridish + * Jerry Huang + * Copyright (c) Logic Product Development, Inc. 2007 + * Peter Barada + * Copyright (c) MontaVista Software, Inc. 2008. + * Anton Vorontsov + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "../core/hcd.h" +#include "fhci.h" + +void fhci_start_sof_timer(struct fhci_hcd *fhci) +{ + fhci_dbg(fhci, "-> %s\n", __func__); + + /* clear frame_n */ + out_be16(&fhci->pram->frame_num, 0); + + out_be16(&fhci->regs->usb_sof_tmr, 0); + setbits8(&fhci->regs->usb_mod, USB_MODE_SFTE); + + fhci_dbg(fhci, "<- %s\n", __func__); +} + +void fhci_stop_sof_timer(struct fhci_hcd *fhci) +{ + fhci_dbg(fhci, "-> %s\n", __func__); + + clrbits8(&fhci->regs->usb_mod, USB_MODE_SFTE); + gtm_stop_timer16(fhci->timer); + + fhci_dbg(fhci, "<- %s\n", __func__); +} + +u16 fhci_get_sof_timer_count(struct fhci_usb *usb) +{ + return be16_to_cpu(in_be16(&usb->fhci->regs->usb_sof_tmr) / 12); +} + +/* initialize the endpoint zero */ +static u32 endpoint_zero_init(struct fhci_usb *usb, + enum fhci_mem_alloc data_mem, + u32 ring_len) +{ + u32 rc; + + rc = fhci_create_ep(usb, data_mem, ring_len); + if (rc) + return rc; + + /* inilialize endpoint registers */ + fhci_init_ep_registers(usb, usb->ep0, data_mem); + + return 0; +} + +/* enable the USB interrupts */ +void fhci_usb_enable_interrupt(struct fhci_usb *usb) +{ + struct fhci_hcd *fhci = usb->fhci; + + if (usb->intr_nesting_cnt == 1) { + /* initialize the USB interrupt */ + enable_irq(fhci_to_hcd(fhci)->irq); + + /* initialize the event register and mask register */ + out_be16(&usb->fhci->regs->usb_event, 0xffff); + out_be16(&usb->fhci->regs->usb_mask, usb->saved_msk); + + /* enable the timer interrupts */ + enable_irq(fhci->timer->irq); + } else if (usb->intr_nesting_cnt > 1) + fhci_info(fhci, "unbalanced USB interrupts nesting\n"); + usb->intr_nesting_cnt--; +} + +/* diable the usb interrupt */ +void fhci_usb_disable_interrupt(struct fhci_usb *usb) +{ + struct fhci_hcd *fhci = usb->fhci; + + if (usb->intr_nesting_cnt == 0) { + /* diable the timer interrupt */ + disable_irq_nosync(fhci->timer->irq); + + /* disable the usb interrupt */ + disable_irq_nosync(fhci_to_hcd(fhci)->irq); + out_be16(&usb->fhci->regs->usb_mask, 0); + } + usb->intr_nesting_cnt++; +} + +/* enable the USB controller */ +static u32 fhci_usb_enable(struct fhci_hcd *fhci) +{ + struct fhci_usb *usb = fhci->usb_lld; + + out_be16(&usb->fhci->regs->usb_event, 0xffff); + out_be16(&usb->fhci->regs->usb_mask, usb->saved_msk); + setbits8(&usb->fhci->regs->usb_mod, USB_MODE_EN); + + mdelay(100); + + return 0; +} + +/* disable the USB controller */ +static u32 fhci_usb_disable(struct fhci_hcd *fhci) +{ + struct fhci_usb *usb = fhci->usb_lld; + + fhci_usb_disable_interrupt(usb); + fhci_port_disable(fhci); + + /* disable the usb controller */ + if (usb->port_status == FHCI_PORT_FULL || + usb->port_status == FHCI_PORT_LOW) + fhci_device_disconnected_interrupt(fhci); + + clrbits8(&usb->fhci->regs->usb_mod, USB_MODE_EN); + + return 0; +} + +/* check the bus state by polling the QE bit on the IO ports */ +int fhci_ioports_check_bus_state(struct fhci_hcd *fhci) +{ + u8 bits = 0; + + /* check USBOE,if transmitting,exit */ + if (!gpio_get_value(fhci->gpios[GPIO_USBOE])) + return -1; + + /* check USBRP */ + if (gpio_get_value(fhci->gpios[GPIO_USBRP])) + bits |= 0x2; + + /* check USBRN */ + if (gpio_get_value(fhci->gpios[GPIO_USBRN])) + bits |= 0x1; + + return bits; +} + +static void fhci_mem_free(struct fhci_hcd *fhci) +{ + struct ed *ed; + struct ed *next_ed; + struct td *td; + struct td *next_td; + + list_for_each_entry_safe(ed, next_ed, &fhci->empty_eds, node) { + list_del(&ed->node); + kfree(ed); + } + + list_for_each_entry_safe(td, next_td, &fhci->empty_tds, node) { + list_del(&td->node); + kfree(td); + } + + kfree(fhci->vroot_hub); + fhci->vroot_hub = NULL; + + kfree(fhci->hc_list); + fhci->hc_list = NULL; +} + +static int fhci_mem_init(struct fhci_hcd *fhci) +{ + int i; + + fhci->hc_list = kzalloc(sizeof(*fhci->hc_list), GFP_KERNEL); + if (!fhci->hc_list) + goto err; + + INIT_LIST_HEAD(&fhci->hc_list->ctrl_list); + INIT_LIST_HEAD(&fhci->hc_list->bulk_list); + INIT_LIST_HEAD(&fhci->hc_list->iso_list); + INIT_LIST_HEAD(&fhci->hc_list->intr_list); + INIT_LIST_HEAD(&fhci->hc_list->done_list); + + fhci->vroot_hub = kzalloc(sizeof(*fhci->vroot_hub), GFP_KERNEL); + if (!fhci->vroot_hub) + goto err; + + INIT_LIST_HEAD(&fhci->empty_eds); + INIT_LIST_HEAD(&fhci->empty_tds); + + /* initialize work queue to handle done list */ + fhci_tasklet.data = (unsigned long)fhci; + fhci->process_done_task = &fhci_tasklet; + + for (i = 0; i < MAX_TDS; i++) { + struct td *td; + + td = kmalloc(sizeof(*td), GFP_KERNEL); + if (!td) + goto err; + fhci_recycle_empty_td(fhci, td); + } + for (i = 0; i < MAX_EDS; i++) { + struct ed *ed; + + ed = kmalloc(sizeof(*ed), GFP_KERNEL); + if (!ed) + goto err; + fhci_recycle_empty_ed(fhci, ed); + } + + fhci->active_urbs = 0; + return 0; +err: + fhci_mem_free(fhci); + return -ENOMEM; +} + +/* destroy the fhci_usb structure */ +static void fhci_usb_free(void *lld) +{ + struct fhci_usb *usb = lld; + struct fhci_hcd *fhci = usb->fhci; + + if (usb) { + fhci_config_transceiver(fhci, FHCI_PORT_POWER_OFF); + fhci_ep0_free(usb); + kfree(usb->actual_frame); + kfree(usb); + } +} + +/* initialize the USB */ +static int fhci_usb_init(struct fhci_hcd *fhci) +{ + struct fhci_usb *usb = fhci->usb_lld; + + memset_io(usb->fhci->pram, 0, FHCI_PRAM_SIZE); + + usb->port_status = FHCI_PORT_DISABLED; + usb->max_frame_usage = FRAME_TIME_USAGE; + usb->sw_transaction_time = SW_FIX_TIME_BETWEEN_TRANSACTION; + + usb->actual_frame = kzalloc(sizeof(*usb->actual_frame), GFP_KERNEL); + if (!usb->actual_frame) { + fhci_usb_free(usb); + return -ENOMEM; + } + + INIT_LIST_HEAD(&usb->actual_frame->tds_list); + + /* initializing registers on chip, clear frame number */ + out_be16(&fhci->pram->frame_num, 0); + + /* clear rx state */ + out_be32(&fhci->pram->rx_state, 0); + + /* set mask register */ + usb->saved_msk = (USB_E_TXB_MASK | + USB_E_TXE1_MASK | + USB_E_IDLE_MASK | + USB_E_RESET_MASK | USB_E_SFT_MASK | USB_E_MSF_MASK); + + out_8(&usb->fhci->regs->usb_mod, USB_MODE_HOST | USB_MODE_EN); + + /* clearing the mask register */ + out_be16(&usb->fhci->regs->usb_mask, 0); + + /* initialing the event register */ + out_be16(&usb->fhci->regs->usb_event, 0xffff); + + if (endpoint_zero_init(usb, DEFAULT_DATA_MEM, DEFAULT_RING_LEN) != 0) { + fhci_usb_free(usb); + return -EINVAL; + } + + return 0; +} + +/* initialize the fhci_usb struct and the corresponding data staruct */ +static struct fhci_usb *fhci_create_lld(struct fhci_hcd *fhci) +{ + struct fhci_usb *usb; + + /* allocate memory for SCC data structure */ + usb = kzalloc(sizeof(*usb), GFP_KERNEL); + if (!usb) { + fhci_err(fhci, "no memory for SCC data struct\n"); + return NULL; + } + + usb->fhci = fhci; + usb->hc_list = fhci->hc_list; + usb->vroot_hub = fhci->vroot_hub; + + usb->transfer_confirm = fhci_transfer_confirm_callback; + + return usb; +} + +static int fhci_start(struct usb_hcd *hcd) +{ + int ret; + struct fhci_hcd *fhci = hcd_to_fhci(hcd); + + ret = fhci_mem_init(fhci); + if (ret) { + fhci_err(fhci, "failed to allocate memory\n"); + goto err; + } + + fhci->usb_lld = fhci_create_lld(fhci); + if (!fhci->usb_lld) { + fhci_err(fhci, "low level driver config failed\n"); + ret = -ENOMEM; + goto err; + } + + ret = fhci_usb_init(fhci); + if (ret) { + fhci_err(fhci, "low level driver initialize failed\n"); + goto err; + } + + spin_lock_init(&fhci->lock); + + /* connect the virtual root hub */ + fhci->vroot_hub->dev_num = 1; /* this field may be needed to fix */ + fhci->vroot_hub->hub.wHubStatus = 0; + fhci->vroot_hub->hub.wHubChange = 0; + fhci->vroot_hub->port.wPortStatus = 0; + fhci->vroot_hub->port.wPortChange = 0; + + hcd->state = HC_STATE_RUNNING; + + /* + * From here on, khubd concurrently accesses the root + * hub; drivers will be talking to enumerated devices. + * (On restart paths, khubd already knows about the root + * hub and could find work as soon as we wrote FLAG_CF.) + * + * Before this point the HC was idle/ready. After, khubd + * and device drivers may start it running. + */ + fhci_usb_enable(fhci); + return 0; +err: + fhci_mem_free(fhci); + return ret; +} + +static void fhci_stop(struct usb_hcd *hcd) +{ + struct fhci_hcd *fhci = hcd_to_fhci(hcd); + + fhci_usb_disable_interrupt(fhci->usb_lld); + fhci_usb_disable(fhci); + + fhci_usb_free(fhci->usb_lld); + fhci->usb_lld = NULL; + fhci_mem_free(fhci); +} + +static int fhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, + gfp_t mem_flags) +{ + struct fhci_hcd *fhci = hcd_to_fhci(hcd); + u32 pipe = urb->pipe; + int ret; + int i; + int size = 0; + struct urb_priv *urb_priv; + unsigned long flags; + + switch (usb_pipetype(pipe)) { + case PIPE_CONTROL: + /* 1 td fro setup,1 for ack */ + size = 2; + case PIPE_BULK: + /* one td for every 4096 bytes(can be upto 8k) */ + size += urb->transfer_buffer_length / 4096; + /* ...add for any remaining bytes... */ + if ((urb->transfer_buffer_length % 4096) != 0) + size++; + /* ..and maybe a zero length packet to wrap it up */ + if (size == 0) + size++; + else if ((urb->transfer_flags & URB_ZERO_PACKET) != 0 + && (urb->transfer_buffer_length + % usb_maxpacket(urb->dev, pipe, + usb_pipeout(pipe))) != 0) + size++; + break; + case PIPE_ISOCHRONOUS: + size = urb->number_of_packets; + if (size <= 0) + return -EINVAL; + for (i = 0; i < urb->number_of_packets; i++) { + urb->iso_frame_desc[i].actual_length = 0; + urb->iso_frame_desc[i].status = (u32) (-EXDEV); + } + break; + case PIPE_INTERRUPT: + size = 1; + } + + /* allocate the private part of the URB */ + urb_priv = kzalloc(sizeof(*urb_priv), mem_flags); + if (!urb_priv) + return -ENOMEM; + + /* allocate the private part of the URB */ + urb_priv->tds = kzalloc(size * sizeof(struct td), mem_flags); + if (!urb_priv->tds) { + kfree(urb_priv); + return -ENOMEM; + } + + spin_lock_irqsave(&fhci->lock, flags); + + ret = usb_hcd_link_urb_to_ep(hcd, urb); + if (ret) + goto err; + + /* fill the private part of the URB */ + urb_priv->num_of_tds = size; + + urb->status = -EINPROGRESS; + urb->actual_length = 0; + urb->error_count = 0; + urb->hcpriv = urb_priv; + + fhci_queue_urb(fhci, urb); +err: + if (ret) { + kfree(urb_priv->tds); + kfree(urb_priv); + } + spin_unlock_irqrestore(&fhci->lock, flags); + return ret; +} + +/* dequeue FHCI URB */ +static int fhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) +{ + struct fhci_hcd *fhci = hcd_to_fhci(hcd); + struct fhci_usb *usb = fhci->usb_lld; + int ret = -EINVAL; + unsigned long flags; + + if (!urb || !urb->dev || !urb->dev->bus) + goto out; + + spin_lock_irqsave(&fhci->lock, flags); + + ret = usb_hcd_check_unlink_urb(hcd, urb, status); + if (ret) + goto out2; + + if (usb->port_status != FHCI_PORT_DISABLED) { + struct urb_priv *urb_priv; + + /* + * flag the urb's data for deletion in some upcoming + * SF interrupt's delete list processing + */ + urb_priv = urb->hcpriv; + + if (!urb_priv || (urb_priv->state == URB_DEL)) + goto out2; + + urb_priv->state = URB_DEL; + + /* already pending? */ + urb_priv->ed->state = FHCI_ED_URB_DEL; + } else { + fhci_urb_complete_free(fhci, urb); + } + +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->bus_id); + 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->bus_id); + 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 , " + "Jerry Huang , " + "Anton Vorontsov "); +MODULE_LICENSE("GPL"); -- cgit v1.2.3