| /* |
| * Freescale QUICC Engine USB Host Controller Driver |
| * |
| * Copyright (c) Freescale Semicondutor, Inc. 2006. |
| * Shlomi Gridish <gridish@freescale.com> |
| * Jerry Huang <Chang-Ming.Huang@freescale.com> |
| * Copyright (c) Logic Product Development, Inc. 2007 |
| * Peter Barada <peterb@logicpd.com> |
| * Copyright (c) MontaVista Software, Inc. 2008. |
| * Anton Vorontsov <avorontsov@ru.mvista.com> |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the |
| * Free Software Foundation; either version 2 of the License, or (at your |
| * option) any later version. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/types.h> |
| #include <linux/spinlock.h> |
| #include <linux/kernel.h> |
| #include <linux/delay.h> |
| #include <linux/errno.h> |
| #include <linux/list.h> |
| #include <linux/interrupt.h> |
| #include <linux/io.h> |
| #include <linux/usb.h> |
| #include <linux/usb/hcd.h> |
| #include <linux/of_platform.h> |
| #include <linux/of_gpio.h> |
| #include <linux/slab.h> |
| #include <asm/qe.h> |
| #include <asm/fsl_gtm.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; |
| |
| if (usb) { |
| fhci = usb->fhci; |
| 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 = kcalloc(size, sizeof(*urb_priv->tds), 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_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 const 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"); |