| 1 | --- a/drivers/usb/host/ohci-hcd.c |
| 2 | +++ b/drivers/usb/host/ohci-hcd.c |
| 3 | @@ -580,7 +580,6 @@ static int ohci_run (struct ohci_hcd *oh |
| 4 | |
| 5 | /* boot firmware should have set this up (5.1.1.3.1) */ |
| 6 | if (first) { |
| 7 | - |
| 8 | val = ohci_readl (ohci, &ohci->regs->fminterval); |
| 9 | ohci->fminterval = val & 0x3fff; |
| 10 | if (ohci->fminterval != FI) |
| 11 | @@ -664,6 +663,9 @@ retry: |
| 12 | |
| 13 | periodic_reinit (ohci); |
| 14 | |
| 15 | + if (ohci->flags & OHCI_QUIRK_INIT_FMINTERVAL) |
| 16 | + ohci_writel (ohci, ohci->fminterval, &ohci->regs->fminterval); |
| 17 | + |
| 18 | /* some OHCI implementations are finicky about how they init. |
| 19 | * bogus values here mean not even enumeration could work. |
| 20 | */ |
| 21 | @@ -1106,6 +1108,11 @@ MODULE_LICENSE ("GPL"); |
| 22 | #define PLATFORM_DRIVER ohci_octeon_driver |
| 23 | #endif |
| 24 | |
| 25 | +#ifdef CONFIG_ARCH_CNS21XX |
| 26 | +#include "ohci-cns21xx.c" |
| 27 | +#define PLATFORM_DRIVER ohci_cns21xx_driver |
| 28 | +#endif |
| 29 | + |
| 30 | #ifdef CONFIG_USB_CNS3XXX_OHCI |
| 31 | #include "ohci-cns3xxx.c" |
| 32 | #define PLATFORM_DRIVER ohci_hcd_cns3xxx_driver |
| 33 | --- /dev/null |
| 34 | +++ b/drivers/usb/host/ohci-cns21xx.c |
| 35 | @@ -0,0 +1,175 @@ |
| 36 | +/* |
| 37 | + * Copyright (c) 2008 Cavium Networks |
| 38 | + * Copyright (c) 2010-2012 Gabor Juhos <juhosg@openwrt.org> |
| 39 | + * |
| 40 | + * This file is free software; you can redistribute it and/or modify |
| 41 | + * it under the terms of the GNU General Public License, Version 2, as |
| 42 | + * published by the Free Software Foundation. |
| 43 | + */ |
| 44 | + |
| 45 | +#include <linux/platform_device.h> |
| 46 | + |
| 47 | +#include <mach/cns21xx.h> |
| 48 | + |
| 49 | +#define DRIVER_NAME "cns21xx-ohci" |
| 50 | + |
| 51 | +static int __devinit cns21xx_ohci_start(struct usb_hcd *hcd) |
| 52 | +{ |
| 53 | + struct ohci_hcd *ohci = hcd_to_ohci(hcd); |
| 54 | + int ret; |
| 55 | + |
| 56 | + ret = ohci_init(ohci); |
| 57 | + if (ret) |
| 58 | + return ret; |
| 59 | + |
| 60 | + ret = ohci_run(ohci); |
| 61 | + if (ret) { |
| 62 | + err("can't start %s", ohci_to_hcd(ohci)->self.bus_name); |
| 63 | + goto err; |
| 64 | + } |
| 65 | + |
| 66 | + return 0; |
| 67 | + |
| 68 | +err: |
| 69 | + ohci_stop(hcd); |
| 70 | + return ret; |
| 71 | +} |
| 72 | + |
| 73 | +static const struct hc_driver ohci_cns21xx_hc_driver = { |
| 74 | + .description = hcd_name, |
| 75 | + .product_desc = "cns21xx-ohci", |
| 76 | + .hcd_priv_size = sizeof(struct ohci_hcd), |
| 77 | + |
| 78 | + /* |
| 79 | + * generic hardware linkage |
| 80 | + */ |
| 81 | + .irq = ohci_irq, |
| 82 | + .flags = HCD_USB11 | HCD_MEMORY, |
| 83 | + |
| 84 | + /* |
| 85 | + * basic lifecycle operations |
| 86 | + */ |
| 87 | + .start = cns21xx_ohci_start, |
| 88 | + .stop = ohci_stop, |
| 89 | + .shutdown = ohci_shutdown, |
| 90 | + |
| 91 | + /* |
| 92 | + * managing i/o requests and associated device resources |
| 93 | + */ |
| 94 | + .urb_enqueue = ohci_urb_enqueue, |
| 95 | + .urb_dequeue = ohci_urb_dequeue, |
| 96 | + .endpoint_disable = ohci_endpoint_disable, |
| 97 | + |
| 98 | + /* |
| 99 | + * scheduling support |
| 100 | + */ |
| 101 | + .get_frame_number = ohci_get_frame, |
| 102 | + |
| 103 | + /* |
| 104 | + * root hub support |
| 105 | + */ |
| 106 | + .hub_status_data = ohci_hub_status_data, |
| 107 | + .hub_control = ohci_hub_control, |
| 108 | + .start_port_reset = ohci_start_port_reset, |
| 109 | +}; |
| 110 | + |
| 111 | +static void cns21xx_ohci_init_hc(void) |
| 112 | +{ |
| 113 | + __raw_writel(0x146, CNS21XX_OHCI_CONFIG_BASE_VIRT + 0x04); |
| 114 | + __raw_writel(0x200, CNS21XX_OHCI_CONFIG_BASE_VIRT + 0x44); |
| 115 | + msleep(100); |
| 116 | +} |
| 117 | + |
| 118 | +static int ohci_cns21xx_probe(struct platform_device *pdev) |
| 119 | +{ |
| 120 | + struct usb_hcd *hcd; |
| 121 | + struct resource *res; |
| 122 | + struct ohci_hcd *ohci; |
| 123 | + int irq; |
| 124 | + int ret; |
| 125 | + |
| 126 | + if (usb_disabled()) |
| 127 | + return -ENODEV; |
| 128 | + |
| 129 | + res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
| 130 | + if (!res) { |
| 131 | + dev_dbg(&pdev->dev, "no IRQ specified for %s\n", |
| 132 | + dev_name(&pdev->dev)); |
| 133 | + return -ENODEV; |
| 134 | + } |
| 135 | + irq = res->start; |
| 136 | + |
| 137 | + hcd = usb_create_hcd(&ohci_cns21xx_hc_driver, &pdev->dev, |
| 138 | + dev_name(&pdev->dev)); |
| 139 | + if (!hcd) |
| 140 | + return -ENOMEM; |
| 141 | + |
| 142 | + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 143 | + if (!res) { |
| 144 | + dev_dbg(&pdev->dev, "no base address specified for %s\n", |
| 145 | + dev_name(&pdev->dev)); |
| 146 | + ret = -ENODEV; |
| 147 | + goto err_put_hcd; |
| 148 | + } |
| 149 | + hcd->rsrc_start = res->start; |
| 150 | + hcd->rsrc_len = res->end - res->start + 1; |
| 151 | + |
| 152 | + if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { |
| 153 | + dev_dbg(&pdev->dev, "controller already in use\n"); |
| 154 | + ret = -EBUSY; |
| 155 | + goto err_put_hcd; |
| 156 | + } |
| 157 | + |
| 158 | + hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); |
| 159 | + if (!hcd->regs) { |
| 160 | + dev_dbg(&pdev->dev, "error mapping memory\n"); |
| 161 | + ret = -EFAULT; |
| 162 | + goto err_release_region; |
| 163 | + } |
| 164 | + |
| 165 | + cns21xx_ohci_init_hc(); |
| 166 | + |
| 167 | + ohci = hcd_to_ohci(hcd); |
| 168 | + ohci->flags |= OHCI_QUIRK_INIT_FMINTERVAL; |
| 169 | + ohci_hcd_init(ohci); |
| 170 | + |
| 171 | + ret = usb_add_hcd(hcd, irq, IRQF_DISABLED); |
| 172 | + if (ret) |
| 173 | + goto err_unmap; |
| 174 | + |
| 175 | + platform_set_drvdata(pdev, hcd); |
| 176 | + return 0; |
| 177 | + |
| 178 | +err_unmap: |
| 179 | + iounmap(hcd->regs); |
| 180 | +err_release_region: |
| 181 | + release_mem_region(hcd->rsrc_start, hcd->rsrc_len); |
| 182 | +err_put_hcd: |
| 183 | + usb_put_hcd(hcd); |
| 184 | + return ret; |
| 185 | +} |
| 186 | + |
| 187 | +static int ohci_cns21xx_remove(struct platform_device *pdev) |
| 188 | +{ |
| 189 | + struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| 190 | + |
| 191 | + usb_remove_hcd(hcd); |
| 192 | + iounmap(hcd->regs); |
| 193 | + release_mem_region(hcd->rsrc_start, hcd->rsrc_len); |
| 194 | + usb_put_hcd(hcd); |
| 195 | + platform_set_drvdata(pdev, NULL); |
| 196 | + |
| 197 | + return 0; |
| 198 | +} |
| 199 | + |
| 200 | +static struct platform_driver ohci_cns21xx_driver = { |
| 201 | + .probe = ohci_cns21xx_probe, |
| 202 | + .remove = ohci_cns21xx_remove, |
| 203 | + .shutdown = usb_hcd_platform_shutdown, |
| 204 | + .driver = { |
| 205 | + .owner = THIS_MODULE, |
| 206 | + .name = DRIVER_NAME, |
| 207 | + }, |
| 208 | +}; |
| 209 | + |
| 210 | +MODULE_ALIAS("platform:" DRIVER_NAME); |
| 211 | --- a/drivers/usb/host/ohci.h |
| 212 | +++ b/drivers/usb/host/ohci.h |
| 213 | @@ -410,6 +410,7 @@ struct ohci_hcd { |
| 214 | #define OHCI_QUIRK_HUB_POWER 0x100 /* distrust firmware power/oc setup */ |
| 215 | #define OHCI_QUIRK_AMD_PLL 0x200 /* AMD PLL quirk*/ |
| 216 | #define OHCI_QUIRK_AMD_PREFETCH 0x400 /* pre-fetch for ISO transfer */ |
| 217 | +#define OHCI_QUIRK_INIT_FMINTERVAL 0x1000 /* fminterval must be initialized */ |
| 218 | // there are also chip quirks/bugs in init logic |
| 219 | |
| 220 | struct work_struct nec_work; /* Worker for NEC quirk */ |
| 221 | --- a/arch/arm/Kconfig |
| 222 | +++ b/arch/arm/Kconfig |
| 223 | @@ -368,6 +368,7 @@ config ARCH_CNS21XX |
| 224 | select PLAT_FA_GPIO |
| 225 | select ARCH_REQUIRE_GPIOLIB |
| 226 | select ARM_L1_CACHE_SHIFT_4 |
| 227 | + select USB_ARCH_HAS_OHCI |
| 228 | help |
| 229 | Support for Cavium Networks CNS21xx family. |
| 230 | |
| 231 | |
