projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
| Commit | Line | Data |
|---|---|---|
| 586dfc8c WZ |
1 | /* |
| 2 | * linux/driver/usb/host/ehci-w90x900.c | |
| 3 | * | |
| 4 | * Copyright (c) 2008 Nuvoton technology corporation. | |
| 5 | * | |
| 6 | * Wan ZongShun <mcuos.com@gmail.com> | |
| 7 | * | |
| 8 | * This program is free software; you can redistribute it and/or modify | |
| 9 | * it under the terms of the GNU General Public License as published by | |
| 10 | * the Free Software Foundation;version 2 of the License. | |
| 11 | * | |
| 12 | */ | |
| 13 | ||
| 14 | #include <linux/platform_device.h> | |
| 15 | ||
| 16 | /*ebable phy0 and phy1 for w90p910*/ | |
| 17 | #define ENPHY (0x01<<8) | |
| 18 | #define PHY0_CTR (0xA4) | |
| 19 | #define PHY1_CTR (0xA8) | |
| 20 | ||
| 21 | static int __devinit usb_w90x900_probe(const struct hc_driver *driver, | |
| 22 | struct platform_device *pdev) | |
| 23 | { | |
| 24 | struct usb_hcd *hcd; | |
| 25 | struct ehci_hcd *ehci; | |
| 26 | struct resource *res; | |
| 27 | int retval = 0, irq; | |
| 28 | unsigned long val; | |
| 29 | ||
| 30 | ||
| 31 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
| 32 | if (!res) { | |
| 33 | retval = -ENXIO; | |
| 34 | goto err1; | |
| 35 | } | |
| 36 | ||
| 37 | hcd = usb_create_hcd(driver, &pdev->dev, "w90x900 EHCI"); | |
| 38 | if (!hcd) { | |
| 39 | retval = -ENOMEM; | |
| 40 | goto err1; | |
| 41 | } | |
| 42 | ||
| 43 | hcd->rsrc_start = res->start; | |
| 44 | hcd->rsrc_len = res->end - res->start + 1; | |
| 45 | ||
| 46 | if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { | |
| 47 | retval = -EBUSY; | |
| 48 | goto err2; | |
| 49 | } | |
| 50 | ||
| 51 | hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); | |
| 52 | if (hcd->regs == NULL) { | |
| 53 | retval = -EFAULT; | |
| 54 | goto err3; | |
| 55 | } | |
| 56 | ||
| 57 | ehci = hcd_to_ehci(hcd); | |
| 58 | ehci->caps = hcd->regs; | |
| 59 | ehci->regs = hcd->regs + | |
| 60 | HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase)); | |
| 61 | ||
| 62 | /* enable PHY 0,1,the regs only apply to w90p910 | |
| 63 | * 0xA4,0xA8 were offsets of PHY0 and PHY1 controller of | |
| 64 | * w90p910 IC relative to ehci->regs. | |
| 65 | */ | |
| 66 | val = __raw_readl(ehci->regs+PHY0_CTR); | |
| 67 | val |= ENPHY; | |
| 68 | __raw_writel(val, ehci->regs+PHY0_CTR); | |
| 69 | ||
| 70 | val = __raw_readl(ehci->regs+PHY1_CTR); | |
| 71 | val |= ENPHY; | |
| 72 | __raw_writel(val, ehci->regs+PHY1_CTR); | |
| 73 | ||
| 74 | ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); | |
| 75 | ehci->sbrn = 0x20; | |
| 76 | ||
| 77 | irq = platform_get_irq(pdev, 0); | |
| 78 | if (irq < 0) | |
| 79 | goto err4; | |
| 80 | ||
| 81 | retval = usb_add_hcd(hcd, irq, IRQF_SHARED); | |
| 82 | if (retval != 0) | |
| 83 | goto err4; | |
| 84 | ||
| 85 | ehci_writel(ehci, 1, &ehci->regs->configured_flag); | |
| 86 | ||
| 87 | return retval; | |
| 88 | err4: | |
| 89 | iounmap(hcd->regs); | |
| 90 | err3: | |
| 91 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); | |
| 92 | err2: | |
| 93 | usb_put_hcd(hcd); | |
| 94 | err1: | |
| 95 | return retval; | |
| 96 | } | |
| 97 | ||
| 98 | static | |
| 99 | void usb_w90x900_remove(struct usb_hcd *hcd, struct platform_device *pdev) | |
| 100 | { | |
| 101 | usb_remove_hcd(hcd); | |
| 102 | iounmap(hcd->regs); | |
| 103 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); | |
| 104 | usb_put_hcd(hcd); | |
| 105 | } | |
| 106 | ||
| 107 | static const struct hc_driver ehci_w90x900_hc_driver = { | |
| 108 | .description = hcd_name, | |
| 109 | .product_desc = "Nuvoton w90x900 EHCI Host Controller", | |
| 110 | .hcd_priv_size = sizeof(struct ehci_hcd), | |
| 111 | ||
| 112 | /* | |
| 113 | * generic hardware linkage | |
| 114 | */ | |
| 115 | .irq = ehci_irq, | |
| 116 | .flags = HCD_USB2|HCD_MEMORY, | |
| 117 | ||
| 118 | /* | |
| 119 | * basic lifecycle operations | |
| 120 | */ | |
| 121 | .reset = ehci_init, | |
| 122 | .start = ehci_run, | |
| 123 | ||
| 124 | .stop = ehci_stop, | |
| 125 | .shutdown = ehci_shutdown, | |
| 126 | ||
| 127 | /* | |
| 128 | * managing i/o requests and associated device resources | |
| 129 | */ | |
| 130 | .urb_enqueue = ehci_urb_enqueue, | |
| 131 | .urb_dequeue = ehci_urb_dequeue, | |
| 132 | .endpoint_disable = ehci_endpoint_disable, | |
| 133 | ||
| 134 | /* | |
| 135 | * scheduling support | |
| 136 | */ | |
| 137 | .get_frame_number = ehci_get_frame, | |
| 138 | ||
| 139 | /* | |
| 140 | * root hub support | |
| 141 | */ | |
| 142 | .hub_status_data = ehci_hub_status_data, | |
| 143 | .hub_control = ehci_hub_control, | |
| 144 | #ifdef CONFIG_PM | |
| 145 | .bus_suspend = ehci_bus_suspend, | |
| 146 | .bus_resume = ehci_bus_resume, | |
| 147 | #endif | |
| 148 | .relinquish_port = ehci_relinquish_port, | |
| 149 | .port_handed_over = ehci_port_handed_over, | |
| 150 | }; | |
| 151 | ||
| 152 | static int __devinit ehci_w90x900_probe(struct platform_device *pdev) | |
| 153 | { | |
| 154 | if (usb_disabled()) | |
| 155 | return -ENODEV; | |
| 156 | ||
| 157 | return usb_w90x900_probe(&ehci_w90x900_hc_driver, pdev); | |
| 158 | } | |
| 159 | ||
| 160 | static int __devexit ehci_w90x900_remove(struct platform_device *pdev) | |
| 161 | { | |
| 162 | struct usb_hcd *hcd = platform_get_drvdata(pdev); | |
| 163 | ||
| 164 | usb_w90x900_remove(hcd, pdev); | |
| 165 | ||
| 166 | return 0; | |
| 167 | } | |
| 168 | ||
| 169 | static struct platform_driver ehci_hcd_w90x900_driver = { | |
| 170 | .probe = ehci_w90x900_probe, | |
| 171 | .remove = __devexit_p(ehci_w90x900_remove), | |
| 172 | .driver = { | |
| 173 | .name = "w90x900-ehci", | |
| 174 | .owner = THIS_MODULE, | |
| 175 | }, | |
| 176 | }; | |
| 177 | ||
| 178 | MODULE_AUTHOR("Wan ZongShun <mcuos.com@gmail.com>"); | |
| 179 | MODULE_DESCRIPTION("w90p910 usb ehci driver!"); | |
| 180 | MODULE_LICENSE("GPL"); | |
| 181 | MODULE_ALIAS("platform:w90p910-ehci"); |