Sylvain Munaut | 495a678 | 2006-12-13 21:09:55 +0100 | [diff] [blame] | 1 | /* |
| 2 | * OHCI HCD (Host Controller Driver) for USB. |
| 3 | * |
| 4 | * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at> |
| 5 | * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net> |
| 6 | * (C) Copyright 2002 Hewlett-Packard Company |
| 7 | * (C) Copyright 2006 Sylvain Munaut <tnt@246tNt.com> |
| 8 | * |
| 9 | * Bus glue for OHCI HC on the of_platform bus |
| 10 | * |
| 11 | * Modified for of_platform bus from ohci-sa1111.c |
| 12 | * |
| 13 | * This file is licenced under the GPL. |
| 14 | */ |
| 15 | |
| 16 | #include <linux/signal.h> |
Stephen Rothwell | 554cc17 | 2008-05-23 16:37:58 +1000 | [diff] [blame] | 17 | #include <linux/of_platform.h> |
Sylvain Munaut | 495a678 | 2006-12-13 21:09:55 +0100 | [diff] [blame] | 18 | |
Sylvain Munaut | 495a678 | 2006-12-13 21:09:55 +0100 | [diff] [blame] | 19 | #include <asm/prom.h> |
| 20 | |
| 21 | |
| 22 | static int __devinit |
| 23 | ohci_ppc_of_start(struct usb_hcd *hcd) |
| 24 | { |
| 25 | struct ohci_hcd *ohci = hcd_to_ohci(hcd); |
| 26 | int ret; |
| 27 | |
| 28 | if ((ret = ohci_init(ohci)) < 0) |
| 29 | return ret; |
| 30 | |
| 31 | if ((ret = ohci_run(ohci)) < 0) { |
| 32 | err("can't start %s", ohci_to_hcd(ohci)->self.bus_name); |
| 33 | ohci_stop(hcd); |
| 34 | return ret; |
| 35 | } |
| 36 | |
| 37 | return 0; |
| 38 | } |
| 39 | |
| 40 | static const struct hc_driver ohci_ppc_of_hc_driver = { |
| 41 | .description = hcd_name, |
| 42 | .product_desc = "OF OHCI", |
| 43 | .hcd_priv_size = sizeof(struct ohci_hcd), |
| 44 | |
| 45 | /* |
| 46 | * generic hardware linkage |
| 47 | */ |
| 48 | .irq = ohci_irq, |
| 49 | .flags = HCD_USB11 | HCD_MEMORY, |
| 50 | |
| 51 | /* |
| 52 | * basic lifecycle operations |
| 53 | */ |
| 54 | .start = ohci_ppc_of_start, |
| 55 | .stop = ohci_stop, |
| 56 | .shutdown = ohci_shutdown, |
| 57 | |
| 58 | /* |
| 59 | * managing i/o requests and associated device resources |
| 60 | */ |
| 61 | .urb_enqueue = ohci_urb_enqueue, |
| 62 | .urb_dequeue = ohci_urb_dequeue, |
| 63 | .endpoint_disable = ohci_endpoint_disable, |
| 64 | |
| 65 | /* |
| 66 | * scheduling support |
| 67 | */ |
| 68 | .get_frame_number = ohci_get_frame, |
| 69 | |
| 70 | /* |
| 71 | * root hub support |
| 72 | */ |
| 73 | .hub_status_data = ohci_hub_status_data, |
| 74 | .hub_control = ohci_hub_control, |
Linus Torvalds | 09ca8ad | 2008-07-06 10:27:25 -0700 | [diff] [blame] | 75 | .hub_irq_enable = ohci_rhsc_enable, |
Sylvain Munaut | 495a678 | 2006-12-13 21:09:55 +0100 | [diff] [blame] | 76 | #ifdef CONFIG_PM |
| 77 | .bus_suspend = ohci_bus_suspend, |
| 78 | .bus_resume = ohci_bus_resume, |
| 79 | #endif |
| 80 | .start_port_reset = ohci_start_port_reset, |
| 81 | }; |
| 82 | |
| 83 | |
| 84 | static int __devinit |
| 85 | ohci_hcd_ppc_of_probe(struct of_device *op, const struct of_device_id *match) |
| 86 | { |
| 87 | struct device_node *dn = op->node; |
| 88 | struct usb_hcd *hcd; |
| 89 | struct ohci_hcd *ohci; |
| 90 | struct resource res; |
| 91 | int irq; |
| 92 | |
| 93 | int rv; |
| 94 | int is_bigendian; |
| 95 | |
| 96 | if (usb_disabled()) |
| 97 | return -ENODEV; |
| 98 | |
| 99 | is_bigendian = |
Stephen Rothwell | 55b61fe | 2007-05-03 17:26:52 +1000 | [diff] [blame] | 100 | of_device_is_compatible(dn, "ohci-bigendian") || |
| 101 | of_device_is_compatible(dn, "ohci-be"); |
Sylvain Munaut | 495a678 | 2006-12-13 21:09:55 +0100 | [diff] [blame] | 102 | |
| 103 | dev_dbg(&op->dev, "initializing PPC-OF USB Controller\n"); |
| 104 | |
| 105 | rv = of_address_to_resource(dn, 0, &res); |
| 106 | if (rv) |
| 107 | return rv; |
| 108 | |
| 109 | hcd = usb_create_hcd(&ohci_ppc_of_hc_driver, &op->dev, "PPC-OF USB"); |
| 110 | if (!hcd) |
| 111 | return -ENOMEM; |
| 112 | |
| 113 | hcd->rsrc_start = res.start; |
| 114 | hcd->rsrc_len = res.end - res.start + 1; |
| 115 | |
| 116 | if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { |
| 117 | printk(KERN_ERR __FILE__ ": request_mem_region failed\n"); |
| 118 | rv = -EBUSY; |
| 119 | goto err_rmr; |
| 120 | } |
| 121 | |
| 122 | irq = irq_of_parse_and_map(dn, 0); |
| 123 | if (irq == NO_IRQ) { |
| 124 | printk(KERN_ERR __FILE__ ": irq_of_parse_and_map failed\n"); |
| 125 | rv = -EBUSY; |
| 126 | goto err_irq; |
| 127 | } |
| 128 | |
| 129 | hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); |
| 130 | if (!hcd->regs) { |
| 131 | printk(KERN_ERR __FILE__ ": ioremap failed\n"); |
| 132 | rv = -ENOMEM; |
| 133 | goto err_ioremap; |
| 134 | } |
| 135 | |
| 136 | ohci = hcd_to_ohci(hcd); |
Valentine Barshak | 4f45426 | 2007-10-09 15:00:05 -0700 | [diff] [blame] | 137 | if (is_bigendian) { |
Sylvain Munaut | 495a678 | 2006-12-13 21:09:55 +0100 | [diff] [blame] | 138 | ohci->flags |= OHCI_QUIRK_BE_MMIO | OHCI_QUIRK_BE_DESC; |
Grant Likely | 66ffbe4 | 2008-01-24 22:25:31 -0700 | [diff] [blame] | 139 | if (of_device_is_compatible(dn, "fsl,mpc5200-ohci")) |
| 140 | ohci->flags |= OHCI_QUIRK_FRAME_NO; |
Valentine Barshak | 4f45426 | 2007-10-09 15:00:05 -0700 | [diff] [blame] | 141 | if (of_device_is_compatible(dn, "mpc5200-ohci")) |
| 142 | ohci->flags |= OHCI_QUIRK_FRAME_NO; |
| 143 | } |
Sylvain Munaut | 495a678 | 2006-12-13 21:09:55 +0100 | [diff] [blame] | 144 | |
| 145 | ohci_hcd_init(ohci); |
| 146 | |
Alan Stern | 442258e | 2007-12-06 14:47:08 -0500 | [diff] [blame] | 147 | rv = usb_add_hcd(hcd, irq, IRQF_DISABLED); |
Sylvain Munaut | 495a678 | 2006-12-13 21:09:55 +0100 | [diff] [blame] | 148 | if (rv == 0) |
| 149 | return 0; |
| 150 | |
| 151 | iounmap(hcd->regs); |
| 152 | err_ioremap: |
| 153 | irq_dispose_mapping(irq); |
| 154 | err_irq: |
| 155 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); |
| 156 | err_rmr: |
| 157 | usb_put_hcd(hcd); |
| 158 | |
| 159 | return rv; |
| 160 | } |
| 161 | |
| 162 | static int ohci_hcd_ppc_of_remove(struct of_device *op) |
| 163 | { |
| 164 | struct usb_hcd *hcd = dev_get_drvdata(&op->dev); |
| 165 | dev_set_drvdata(&op->dev, NULL); |
| 166 | |
| 167 | dev_dbg(&op->dev, "stopping PPC-OF USB Controller\n"); |
| 168 | |
| 169 | usb_remove_hcd(hcd); |
| 170 | |
| 171 | iounmap(hcd->regs); |
| 172 | irq_dispose_mapping(hcd->irq); |
| 173 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); |
| 174 | |
| 175 | usb_put_hcd(hcd); |
| 176 | |
| 177 | return 0; |
| 178 | } |
| 179 | |
| 180 | static int ohci_hcd_ppc_of_shutdown(struct of_device *op) |
| 181 | { |
| 182 | struct usb_hcd *hcd = dev_get_drvdata(&op->dev); |
| 183 | |
| 184 | if (hcd->driver->shutdown) |
| 185 | hcd->driver->shutdown(hcd); |
| 186 | |
| 187 | return 0; |
| 188 | } |
| 189 | |
| 190 | |
| 191 | static struct of_device_id ohci_hcd_ppc_of_match[] = { |
| 192 | #ifdef CONFIG_USB_OHCI_HCD_PPC_OF_BE |
| 193 | { |
| 194 | .name = "usb", |
| 195 | .compatible = "ohci-bigendian", |
| 196 | }, |
| 197 | { |
| 198 | .name = "usb", |
| 199 | .compatible = "ohci-be", |
| 200 | }, |
| 201 | #endif |
| 202 | #ifdef CONFIG_USB_OHCI_HCD_PPC_OF_LE |
| 203 | { |
| 204 | .name = "usb", |
| 205 | .compatible = "ohci-littledian", |
| 206 | }, |
| 207 | { |
| 208 | .name = "usb", |
| 209 | .compatible = "ohci-le", |
| 210 | }, |
| 211 | #endif |
| 212 | {}, |
| 213 | }; |
| 214 | MODULE_DEVICE_TABLE(of, ohci_hcd_ppc_of_match); |
| 215 | |
| 216 | #if !defined(CONFIG_USB_OHCI_HCD_PPC_OF_BE) && \ |
| 217 | !defined(CONFIG_USB_OHCI_HCD_PPC_OF_LE) |
| 218 | #error "No endianess selected for ppc-of-ohci" |
| 219 | #endif |
| 220 | |
| 221 | |
| 222 | static struct of_platform_driver ohci_hcd_ppc_of_driver = { |
| 223 | .name = "ppc-of-ohci", |
| 224 | .match_table = ohci_hcd_ppc_of_match, |
| 225 | .probe = ohci_hcd_ppc_of_probe, |
| 226 | .remove = ohci_hcd_ppc_of_remove, |
| 227 | .shutdown = ohci_hcd_ppc_of_shutdown, |
| 228 | #ifdef CONFIG_PM |
| 229 | /*.suspend = ohci_hcd_ppc_soc_drv_suspend,*/ |
| 230 | /*.resume = ohci_hcd_ppc_soc_drv_resume,*/ |
| 231 | #endif |
| 232 | .driver = { |
| 233 | .name = "ppc-of-ohci", |
| 234 | .owner = THIS_MODULE, |
| 235 | }, |
| 236 | }; |
| 237 | |