Vladimir Barinov | 91bc4d3 | 2007-12-30 15:21:11 -0800 | [diff] [blame] | 1 | /* |
| 2 | * IXP4XX EHCI Host Controller Driver |
| 3 | * |
Vladimir Barinov | d6b5203 | 2008-09-29 23:14:11 +0400 | [diff] [blame] | 4 | * Author: Vladimir Barinov <vbarinov@embeddedalley.com> |
Vladimir Barinov | 91bc4d3 | 2007-12-30 15:21:11 -0800 | [diff] [blame] | 5 | * |
| 6 | * Based on "ehci-fsl.c" by Randy Vinson <rvinson@mvista.com> |
| 7 | * |
| 8 | * 2007 (c) MontaVista Software, Inc. This file is licensed under |
| 9 | * the terms of the GNU General Public License version 2. This program |
| 10 | * is licensed "as is" without any warranty of any kind, whether express |
| 11 | * or implied. |
| 12 | */ |
| 13 | |
| 14 | #include <linux/platform_device.h> |
| 15 | |
| 16 | static int ixp4xx_ehci_init(struct usb_hcd *hcd) |
| 17 | { |
| 18 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
| 19 | int retval = 0; |
| 20 | |
| 21 | ehci->big_endian_desc = 1; |
| 22 | ehci->big_endian_mmio = 1; |
| 23 | |
| 24 | ehci->caps = hcd->regs + 0x100; |
| 25 | ehci->regs = hcd->regs + 0x100 |
| 26 | + HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase)); |
| 27 | ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); |
| 28 | |
Alan Stern | a8e5177 | 2008-05-20 16:58:11 -0400 | [diff] [blame] | 29 | hcd->has_tt = 1; |
Vladimir Barinov | 91bc4d3 | 2007-12-30 15:21:11 -0800 | [diff] [blame] | 30 | ehci_reset(ehci); |
| 31 | |
| 32 | retval = ehci_init(hcd); |
| 33 | if (retval) |
| 34 | return retval; |
| 35 | |
| 36 | ehci_port_power(ehci, 0); |
| 37 | |
| 38 | return retval; |
| 39 | } |
| 40 | |
| 41 | static const struct hc_driver ixp4xx_ehci_hc_driver = { |
| 42 | .description = hcd_name, |
| 43 | .product_desc = "IXP4XX EHCI Host Controller", |
| 44 | .hcd_priv_size = sizeof(struct ehci_hcd), |
| 45 | .irq = ehci_irq, |
| 46 | .flags = HCD_MEMORY | HCD_USB2, |
| 47 | .reset = ixp4xx_ehci_init, |
| 48 | .start = ehci_run, |
| 49 | .stop = ehci_stop, |
| 50 | .shutdown = ehci_shutdown, |
| 51 | .urb_enqueue = ehci_urb_enqueue, |
| 52 | .urb_dequeue = ehci_urb_dequeue, |
| 53 | .endpoint_disable = ehci_endpoint_disable, |
Alan Stern | b18ffd4 | 2009-05-27 18:21:56 -0400 | [diff] [blame] | 54 | .endpoint_reset = ehci_endpoint_reset, |
Vladimir Barinov | 91bc4d3 | 2007-12-30 15:21:11 -0800 | [diff] [blame] | 55 | .get_frame_number = ehci_get_frame, |
| 56 | .hub_status_data = ehci_hub_status_data, |
| 57 | .hub_control = ehci_hub_control, |
| 58 | #if defined(CONFIG_PM) |
| 59 | .bus_suspend = ehci_bus_suspend, |
| 60 | .bus_resume = ehci_bus_resume, |
| 61 | #endif |
Alan Stern | a8e5177 | 2008-05-20 16:58:11 -0400 | [diff] [blame] | 62 | .relinquish_port = ehci_relinquish_port, |
Alan Stern | 3a31155 | 2008-05-20 16:58:29 -0400 | [diff] [blame] | 63 | .port_handed_over = ehci_port_handed_over, |
Vladimir Barinov | 91bc4d3 | 2007-12-30 15:21:11 -0800 | [diff] [blame] | 64 | }; |
| 65 | |
| 66 | static int ixp4xx_ehci_probe(struct platform_device *pdev) |
| 67 | { |
| 68 | struct usb_hcd *hcd; |
| 69 | const struct hc_driver *driver = &ixp4xx_ehci_hc_driver; |
| 70 | struct resource *res; |
| 71 | int irq; |
| 72 | int retval; |
| 73 | |
| 74 | if (usb_disabled()) |
| 75 | return -ENODEV; |
| 76 | |
| 77 | res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
| 78 | if (!res) { |
| 79 | dev_err(&pdev->dev, |
| 80 | "Found HC with no IRQ. Check %s setup!\n", |
Kay Sievers | 7071a3c | 2008-05-02 06:02:41 +0200 | [diff] [blame] | 81 | dev_name(&pdev->dev)); |
Vladimir Barinov | 91bc4d3 | 2007-12-30 15:21:11 -0800 | [diff] [blame] | 82 | return -ENODEV; |
| 83 | } |
| 84 | irq = res->start; |
| 85 | |
Kay Sievers | 7071a3c | 2008-05-02 06:02:41 +0200 | [diff] [blame] | 86 | hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev)); |
Vladimir Barinov | 91bc4d3 | 2007-12-30 15:21:11 -0800 | [diff] [blame] | 87 | if (!hcd) { |
| 88 | retval = -ENOMEM; |
| 89 | goto fail_create_hcd; |
| 90 | } |
| 91 | |
| 92 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 93 | if (!res) { |
| 94 | dev_err(&pdev->dev, |
| 95 | "Found HC with no register addr. Check %s setup!\n", |
Kay Sievers | 7071a3c | 2008-05-02 06:02:41 +0200 | [diff] [blame] | 96 | dev_name(&pdev->dev)); |
Vladimir Barinov | 91bc4d3 | 2007-12-30 15:21:11 -0800 | [diff] [blame] | 97 | retval = -ENODEV; |
| 98 | goto fail_request_resource; |
| 99 | } |
| 100 | hcd->rsrc_start = res->start; |
| 101 | hcd->rsrc_len = res->end - res->start + 1; |
| 102 | |
| 103 | if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, |
| 104 | driver->description)) { |
| 105 | dev_dbg(&pdev->dev, "controller already in use\n"); |
| 106 | retval = -EBUSY; |
| 107 | goto fail_request_resource; |
| 108 | } |
| 109 | |
| 110 | hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len); |
| 111 | if (hcd->regs == NULL) { |
| 112 | dev_dbg(&pdev->dev, "error mapping memory\n"); |
| 113 | retval = -EFAULT; |
| 114 | goto fail_ioremap; |
| 115 | } |
| 116 | |
| 117 | retval = usb_add_hcd(hcd, irq, IRQF_SHARED); |
| 118 | if (retval) |
| 119 | goto fail_add_hcd; |
| 120 | |
| 121 | return retval; |
| 122 | |
| 123 | fail_add_hcd: |
| 124 | iounmap(hcd->regs); |
| 125 | fail_ioremap: |
| 126 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); |
| 127 | fail_request_resource: |
| 128 | usb_put_hcd(hcd); |
| 129 | fail_create_hcd: |
Kay Sievers | 7071a3c | 2008-05-02 06:02:41 +0200 | [diff] [blame] | 130 | dev_err(&pdev->dev, "init %s fail, %d\n", dev_name(&pdev->dev), retval); |
Vladimir Barinov | 91bc4d3 | 2007-12-30 15:21:11 -0800 | [diff] [blame] | 131 | return retval; |
| 132 | } |
| 133 | |
| 134 | static int ixp4xx_ehci_remove(struct platform_device *pdev) |
| 135 | { |
| 136 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| 137 | |
| 138 | usb_remove_hcd(hcd); |
| 139 | iounmap(hcd->regs); |
| 140 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); |
| 141 | usb_put_hcd(hcd); |
| 142 | |
| 143 | return 0; |
| 144 | } |
| 145 | |
David Brownell | 135db04 | 2008-02-11 18:40:46 -0800 | [diff] [blame] | 146 | MODULE_ALIAS("platform:ixp4xx-ehci"); |
Vladimir Barinov | 91bc4d3 | 2007-12-30 15:21:11 -0800 | [diff] [blame] | 147 | |
| 148 | static struct platform_driver ixp4xx_ehci_driver = { |
| 149 | .probe = ixp4xx_ehci_probe, |
| 150 | .remove = ixp4xx_ehci_remove, |
| 151 | .driver = { |
| 152 | .name = "ixp4xx-ehci", |
Vladimir Barinov | 91bc4d3 | 2007-12-30 15:21:11 -0800 | [diff] [blame] | 153 | }, |
| 154 | }; |