Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 1 | /* |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 2 | * SAMSUNG EXYNOS USB HOST EHCI Controller |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 3 | * |
| 4 | * Copyright (C) 2011 Samsung Electronics Co.Ltd |
| 5 | * Author: Jingoo Han <jg1.han@samsung.com> |
| 6 | * Author: Joonyoung Shim <jy0922.shim@samsung.com> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify it |
| 9 | * under the terms of the GNU General Public License as published by the |
| 10 | * Free Software Foundation; either version 2 of the License, or (at your |
| 11 | * option) any later version. |
| 12 | * |
| 13 | */ |
| 14 | |
| 15 | #include <linux/clk.h> |
Manjunath Goudar | 7edb3da | 2013-04-02 18:24:01 +0200 | [diff] [blame] | 16 | #include <linux/dma-mapping.h> |
| 17 | #include <linux/io.h> |
| 18 | #include <linux/kernel.h> |
| 19 | #include <linux/module.h> |
Vivek Gautam | 2c026e2 | 2012-07-16 11:25:37 +0530 | [diff] [blame] | 20 | #include <linux/of.h> |
Vivek Gautam | fd81d59 | 2012-07-17 10:10:50 +0530 | [diff] [blame] | 21 | #include <linux/of_gpio.h> |
Manjunath Goudar | 7edb3da | 2013-04-02 18:24:01 +0200 | [diff] [blame] | 22 | #include <linux/platform_device.h> |
Vivek Gautam | d233c19 | 2013-01-22 18:30:42 +0530 | [diff] [blame] | 23 | #include <linux/usb/phy.h> |
Vivek Gautam | b506eeb | 2013-01-22 18:30:40 +0530 | [diff] [blame] | 24 | #include <linux/usb/samsung_usb_phy.h> |
Manjunath Goudar | 7edb3da | 2013-04-02 18:24:01 +0200 | [diff] [blame] | 25 | #include <linux/usb.h> |
| 26 | #include <linux/usb/hcd.h> |
| 27 | #include <linux/usb/otg.h> |
| 28 | |
| 29 | #include "ehci.h" |
| 30 | |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 31 | #define DRIVER_DESC "EHCI EXYNOS driver" |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 32 | |
Jingoo Han | 88555a6 | 2012-03-05 10:40:14 +0900 | [diff] [blame] | 33 | #define EHCI_INSNREG00(base) (base + 0x90) |
| 34 | #define EHCI_INSNREG00_ENA_INCR16 (0x1 << 25) |
| 35 | #define EHCI_INSNREG00_ENA_INCR8 (0x1 << 24) |
| 36 | #define EHCI_INSNREG00_ENA_INCR4 (0x1 << 23) |
| 37 | #define EHCI_INSNREG00_ENA_INCRX_ALIGN (0x1 << 22) |
| 38 | #define EHCI_INSNREG00_ENABLE_DMA_BURST \ |
| 39 | (EHCI_INSNREG00_ENA_INCR16 | EHCI_INSNREG00_ENA_INCR8 | \ |
| 40 | EHCI_INSNREG00_ENA_INCR4 | EHCI_INSNREG00_ENA_INCRX_ALIGN) |
| 41 | |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 42 | static const char hcd_name[] = "ehci-exynos"; |
| 43 | static struct hc_driver __read_mostly exynos_ehci_hc_driver; |
Manjunath Goudar | 7edb3da | 2013-04-02 18:24:01 +0200 | [diff] [blame] | 44 | |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 45 | struct exynos_ehci_hcd { |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 46 | struct clk *clk; |
Vivek Gautam | d233c19 | 2013-01-22 18:30:42 +0530 | [diff] [blame] | 47 | struct usb_phy *phy; |
| 48 | struct usb_otg *otg; |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 49 | }; |
| 50 | |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 51 | #define to_exynos_ehci(hcd) (struct exynos_ehci_hcd *)(hcd_to_ehci(hcd)->priv) |
Vivek Gautam | d233c19 | 2013-01-22 18:30:42 +0530 | [diff] [blame] | 52 | |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 53 | static void exynos_setup_vbus_gpio(struct platform_device *pdev) |
Vivek Gautam | fd81d59 | 2012-07-17 10:10:50 +0530 | [diff] [blame] | 54 | { |
Doug Anderson | 3f3b55b | 2013-03-14 20:15:37 -0700 | [diff] [blame] | 55 | struct device *dev = &pdev->dev; |
Vivek Gautam | fd81d59 | 2012-07-17 10:10:50 +0530 | [diff] [blame] | 56 | int err; |
| 57 | int gpio; |
| 58 | |
Doug Anderson | 3f3b55b | 2013-03-14 20:15:37 -0700 | [diff] [blame] | 59 | if (!dev->of_node) |
Vivek Gautam | fd81d59 | 2012-07-17 10:10:50 +0530 | [diff] [blame] | 60 | return; |
| 61 | |
Doug Anderson | 3f3b55b | 2013-03-14 20:15:37 -0700 | [diff] [blame] | 62 | gpio = of_get_named_gpio(dev->of_node, "samsung,vbus-gpio", 0); |
Vivek Gautam | fd81d59 | 2012-07-17 10:10:50 +0530 | [diff] [blame] | 63 | if (!gpio_is_valid(gpio)) |
| 64 | return; |
| 65 | |
Doug Anderson | 3f3b55b | 2013-03-14 20:15:37 -0700 | [diff] [blame] | 66 | err = devm_gpio_request_one(dev, gpio, GPIOF_OUT_INIT_HIGH, |
| 67 | "ehci_vbus_gpio"); |
Vivek Gautam | fd81d59 | 2012-07-17 10:10:50 +0530 | [diff] [blame] | 68 | if (err) |
Doug Anderson | 3f3b55b | 2013-03-14 20:15:37 -0700 | [diff] [blame] | 69 | dev_err(dev, "can't request ehci vbus gpio %d", gpio); |
Vivek Gautam | fd81d59 | 2012-07-17 10:10:50 +0530 | [diff] [blame] | 70 | } |
| 71 | |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 72 | static int exynos_ehci_probe(struct platform_device *pdev) |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 73 | { |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 74 | struct exynos_ehci_hcd *exynos_ehci; |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 75 | struct usb_hcd *hcd; |
| 76 | struct ehci_hcd *ehci; |
| 77 | struct resource *res; |
Vivek Gautam | d233c19 | 2013-01-22 18:30:42 +0530 | [diff] [blame] | 78 | struct usb_phy *phy; |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 79 | int irq; |
| 80 | int err; |
| 81 | |
Vivek Gautam | 2c026e2 | 2012-07-16 11:25:37 +0530 | [diff] [blame] | 82 | /* |
| 83 | * Right now device-tree probed devices don't get dma_mask set. |
| 84 | * Since shared usb code relies on it, set it here for now. |
| 85 | * Once we move to full device tree support this will vanish off. |
| 86 | */ |
Linus Torvalds | 8ceafbf | 2013-11-14 07:55:21 +0900 | [diff] [blame^] | 87 | err = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); |
| 88 | if (err) |
| 89 | return err; |
Vivek Gautam | 2c026e2 | 2012-07-16 11:25:37 +0530 | [diff] [blame] | 90 | |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 91 | exynos_setup_vbus_gpio(pdev); |
Vivek Gautam | fd81d59 | 2012-07-17 10:10:50 +0530 | [diff] [blame] | 92 | |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 93 | hcd = usb_create_hcd(&exynos_ehci_hc_driver, |
Manjunath Goudar | 7edb3da | 2013-04-02 18:24:01 +0200 | [diff] [blame] | 94 | &pdev->dev, dev_name(&pdev->dev)); |
| 95 | if (!hcd) { |
| 96 | dev_err(&pdev->dev, "Unable to create HCD\n"); |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 97 | return -ENOMEM; |
Manjunath Goudar | 7edb3da | 2013-04-02 18:24:01 +0200 | [diff] [blame] | 98 | } |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 99 | exynos_ehci = to_exynos_ehci(hcd); |
Thomas Abraham | e6b0166f | 2013-05-27 18:42:12 +0900 | [diff] [blame] | 100 | |
| 101 | if (of_device_is_compatible(pdev->dev.of_node, |
Jingoo Han | 57ae160 | 2013-10-10 16:41:19 +0900 | [diff] [blame] | 102 | "samsung,exynos5440-ehci")) |
Thomas Abraham | e6b0166f | 2013-05-27 18:42:12 +0900 | [diff] [blame] | 103 | goto skip_phy; |
Thomas Abraham | e6b0166f | 2013-05-27 18:42:12 +0900 | [diff] [blame] | 104 | |
Vivek Gautam | d233c19 | 2013-01-22 18:30:42 +0530 | [diff] [blame] | 105 | phy = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2); |
Felipe Balbi | a16283e | 2013-03-15 11:04:15 +0200 | [diff] [blame] | 106 | if (IS_ERR(phy)) { |
Jingoo Han | 57ae160 | 2013-10-10 16:41:19 +0900 | [diff] [blame] | 107 | usb_put_hcd(hcd); |
| 108 | dev_warn(&pdev->dev, "no platform data or transceiver defined\n"); |
| 109 | return -EPROBE_DEFER; |
Vivek Gautam | d233c19 | 2013-01-22 18:30:42 +0530 | [diff] [blame] | 110 | } else { |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 111 | exynos_ehci->phy = phy; |
| 112 | exynos_ehci->otg = phy->otg; |
Vivek Gautam | d233c19 | 2013-01-22 18:30:42 +0530 | [diff] [blame] | 113 | } |
| 114 | |
Thomas Abraham | e6b0166f | 2013-05-27 18:42:12 +0900 | [diff] [blame] | 115 | skip_phy: |
| 116 | |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 117 | exynos_ehci->clk = devm_clk_get(&pdev->dev, "usbhost"); |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 118 | |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 119 | if (IS_ERR(exynos_ehci->clk)) { |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 120 | dev_err(&pdev->dev, "Failed to get usbhost clock\n"); |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 121 | err = PTR_ERR(exynos_ehci->clk); |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 122 | goto fail_clk; |
| 123 | } |
| 124 | |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 125 | err = clk_prepare_enable(exynos_ehci->clk); |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 126 | if (err) |
Julia Lawall | 63fd0ae | 2012-07-30 16:43:44 +0200 | [diff] [blame] | 127 | goto fail_clk; |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 128 | |
| 129 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 130 | if (!res) { |
| 131 | dev_err(&pdev->dev, "Failed to get I/O memory\n"); |
| 132 | err = -ENXIO; |
| 133 | goto fail_io; |
| 134 | } |
| 135 | |
| 136 | hcd->rsrc_start = res->start; |
| 137 | hcd->rsrc_len = resource_size(res); |
Jingoo Han | 9cb0756 | 2012-06-28 16:29:46 +0900 | [diff] [blame] | 138 | hcd->regs = devm_ioremap(&pdev->dev, res->start, hcd->rsrc_len); |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 139 | if (!hcd->regs) { |
| 140 | dev_err(&pdev->dev, "Failed to remap I/O memory\n"); |
| 141 | err = -ENOMEM; |
| 142 | goto fail_io; |
| 143 | } |
| 144 | |
| 145 | irq = platform_get_irq(pdev, 0); |
| 146 | if (!irq) { |
| 147 | dev_err(&pdev->dev, "Failed to get IRQ\n"); |
| 148 | err = -ENODEV; |
Jingoo Han | 9cb0756 | 2012-06-28 16:29:46 +0900 | [diff] [blame] | 149 | goto fail_io; |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 150 | } |
| 151 | |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 152 | if (exynos_ehci->otg) |
| 153 | exynos_ehci->otg->set_host(exynos_ehci->otg, &hcd->self); |
Vivek Gautam | d233c19 | 2013-01-22 18:30:42 +0530 | [diff] [blame] | 154 | |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 155 | if (exynos_ehci->phy) |
| 156 | usb_phy_init(exynos_ehci->phy); |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 157 | |
| 158 | ehci = hcd_to_ehci(hcd); |
| 159 | ehci->caps = hcd->regs; |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 160 | |
Jingoo Han | 88555a6 | 2012-03-05 10:40:14 +0900 | [diff] [blame] | 161 | /* DMA burst Enable */ |
| 162 | writel(EHCI_INSNREG00_ENABLE_DMA_BURST, EHCI_INSNREG00(hcd->regs)); |
| 163 | |
Yong Zhang | b5dd18d | 2011-09-07 16:10:52 +0800 | [diff] [blame] | 164 | err = usb_add_hcd(hcd, irq, IRQF_SHARED); |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 165 | if (err) { |
| 166 | dev_err(&pdev->dev, "Failed to add USB HCD\n"); |
Vivek Gautam | d233c19 | 2013-01-22 18:30:42 +0530 | [diff] [blame] | 167 | goto fail_add_hcd; |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 168 | } |
| 169 | |
Vivek Gautam | bbcd85a | 2013-04-09 18:42:11 +0530 | [diff] [blame] | 170 | platform_set_drvdata(pdev, hcd); |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 171 | |
| 172 | return 0; |
| 173 | |
Vivek Gautam | d233c19 | 2013-01-22 18:30:42 +0530 | [diff] [blame] | 174 | fail_add_hcd: |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 175 | if (exynos_ehci->phy) |
| 176 | usb_phy_shutdown(exynos_ehci->phy); |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 177 | fail_io: |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 178 | clk_disable_unprepare(exynos_ehci->clk); |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 179 | fail_clk: |
| 180 | usb_put_hcd(hcd); |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 181 | return err; |
| 182 | } |
| 183 | |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 184 | static int exynos_ehci_remove(struct platform_device *pdev) |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 185 | { |
Manjunath Goudar | 7edb3da | 2013-04-02 18:24:01 +0200 | [diff] [blame] | 186 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 187 | struct exynos_ehci_hcd *exynos_ehci = to_exynos_ehci(hcd); |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 188 | |
| 189 | usb_remove_hcd(hcd); |
| 190 | |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 191 | if (exynos_ehci->otg) |
| 192 | exynos_ehci->otg->set_host(exynos_ehci->otg, &hcd->self); |
Vivek Gautam | d233c19 | 2013-01-22 18:30:42 +0530 | [diff] [blame] | 193 | |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 194 | if (exynos_ehci->phy) |
| 195 | usb_phy_shutdown(exynos_ehci->phy); |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 196 | |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 197 | clk_disable_unprepare(exynos_ehci->clk); |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 198 | |
| 199 | usb_put_hcd(hcd); |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 200 | |
| 201 | return 0; |
| 202 | } |
| 203 | |
Jingoo Han | 1acb30e | 2011-05-20 20:48:33 +0900 | [diff] [blame] | 204 | #ifdef CONFIG_PM |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 205 | static int exynos_ehci_suspend(struct device *dev) |
Jingoo Han | 1acb30e | 2011-05-20 20:48:33 +0900 | [diff] [blame] | 206 | { |
Manjunath Goudar | 7edb3da | 2013-04-02 18:24:01 +0200 | [diff] [blame] | 207 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 208 | struct exynos_ehci_hcd *exynos_ehci = to_exynos_ehci(hcd); |
Manjunath Goudar | 7edb3da | 2013-04-02 18:24:01 +0200 | [diff] [blame] | 209 | |
Alan Stern | c5cf921 | 2012-06-28 11:19:02 -0400 | [diff] [blame] | 210 | bool do_wakeup = device_may_wakeup(dev); |
Alan Stern | c5cf921 | 2012-06-28 11:19:02 -0400 | [diff] [blame] | 211 | int rc; |
Jingoo Han | 1acb30e | 2011-05-20 20:48:33 +0900 | [diff] [blame] | 212 | |
Alan Stern | c5cf921 | 2012-06-28 11:19:02 -0400 | [diff] [blame] | 213 | rc = ehci_suspend(hcd, do_wakeup); |
Jingoo Han | 1acb30e | 2011-05-20 20:48:33 +0900 | [diff] [blame] | 214 | |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 215 | if (exynos_ehci->otg) |
| 216 | exynos_ehci->otg->set_host(exynos_ehci->otg, &hcd->self); |
Vivek Gautam | d233c19 | 2013-01-22 18:30:42 +0530 | [diff] [blame] | 217 | |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 218 | if (exynos_ehci->phy) |
| 219 | usb_phy_shutdown(exynos_ehci->phy); |
Jingoo Han | 1acb30e | 2011-05-20 20:48:33 +0900 | [diff] [blame] | 220 | |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 221 | clk_disable_unprepare(exynos_ehci->clk); |
Jingoo Han | 8b4fc8c | 2012-04-13 11:06:36 +0900 | [diff] [blame] | 222 | |
Jingoo Han | 1acb30e | 2011-05-20 20:48:33 +0900 | [diff] [blame] | 223 | return rc; |
| 224 | } |
| 225 | |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 226 | static int exynos_ehci_resume(struct device *dev) |
Jingoo Han | 1acb30e | 2011-05-20 20:48:33 +0900 | [diff] [blame] | 227 | { |
Manjunath Goudar | 7edb3da | 2013-04-02 18:24:01 +0200 | [diff] [blame] | 228 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 229 | struct exynos_ehci_hcd *exynos_ehci = to_exynos_ehci(hcd); |
Jingoo Han | 1acb30e | 2011-05-20 20:48:33 +0900 | [diff] [blame] | 230 | |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 231 | clk_prepare_enable(exynos_ehci->clk); |
Jingoo Han | 8b4fc8c | 2012-04-13 11:06:36 +0900 | [diff] [blame] | 232 | |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 233 | if (exynos_ehci->otg) |
| 234 | exynos_ehci->otg->set_host(exynos_ehci->otg, &hcd->self); |
Vivek Gautam | d233c19 | 2013-01-22 18:30:42 +0530 | [diff] [blame] | 235 | |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 236 | if (exynos_ehci->phy) |
| 237 | usb_phy_init(exynos_ehci->phy); |
Jingoo Han | 1acb30e | 2011-05-20 20:48:33 +0900 | [diff] [blame] | 238 | |
Jingoo Han | 88555a6 | 2012-03-05 10:40:14 +0900 | [diff] [blame] | 239 | /* DMA burst Enable */ |
| 240 | writel(EHCI_INSNREG00_ENABLE_DMA_BURST, EHCI_INSNREG00(hcd->regs)); |
| 241 | |
Alan Stern | c5cf921 | 2012-06-28 11:19:02 -0400 | [diff] [blame] | 242 | ehci_resume(hcd, false); |
Jingoo Han | 1acb30e | 2011-05-20 20:48:33 +0900 | [diff] [blame] | 243 | return 0; |
| 244 | } |
| 245 | #else |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 246 | #define exynos_ehci_suspend NULL |
| 247 | #define exynos_ehci_resume NULL |
Jingoo Han | 1acb30e | 2011-05-20 20:48:33 +0900 | [diff] [blame] | 248 | #endif |
| 249 | |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 250 | static const struct dev_pm_ops exynos_ehci_pm_ops = { |
| 251 | .suspend = exynos_ehci_suspend, |
| 252 | .resume = exynos_ehci_resume, |
Jingoo Han | 1acb30e | 2011-05-20 20:48:33 +0900 | [diff] [blame] | 253 | }; |
| 254 | |
Vivek Gautam | 2c026e2 | 2012-07-16 11:25:37 +0530 | [diff] [blame] | 255 | #ifdef CONFIG_OF |
| 256 | static const struct of_device_id exynos_ehci_match[] = { |
Vivek Gautam | 6e24777 | 2013-01-24 19:15:29 +0530 | [diff] [blame] | 257 | { .compatible = "samsung,exynos4210-ehci" }, |
Thomas Abraham | e6b0166f | 2013-05-27 18:42:12 +0900 | [diff] [blame] | 258 | { .compatible = "samsung,exynos5440-ehci" }, |
Vivek Gautam | 2c026e2 | 2012-07-16 11:25:37 +0530 | [diff] [blame] | 259 | {}, |
| 260 | }; |
| 261 | MODULE_DEVICE_TABLE(of, exynos_ehci_match); |
| 262 | #endif |
| 263 | |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 264 | static struct platform_driver exynos_ehci_driver = { |
| 265 | .probe = exynos_ehci_probe, |
| 266 | .remove = exynos_ehci_remove, |
Roger Quadros | aaf6b52 | 2013-07-22 15:04:50 +0300 | [diff] [blame] | 267 | .shutdown = usb_hcd_platform_shutdown, |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 268 | .driver = { |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 269 | .name = "exynos-ehci", |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 270 | .owner = THIS_MODULE, |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 271 | .pm = &exynos_ehci_pm_ops, |
Vivek Gautam | 2c026e2 | 2012-07-16 11:25:37 +0530 | [diff] [blame] | 272 | .of_match_table = of_match_ptr(exynos_ehci_match), |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 273 | } |
| 274 | }; |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 275 | static const struct ehci_driver_overrides exynos_overrides __initdata = { |
| 276 | .extra_priv_size = sizeof(struct exynos_ehci_hcd), |
Manjunath Goudar | 7edb3da | 2013-04-02 18:24:01 +0200 | [diff] [blame] | 277 | }; |
Joonyoung Shim | 1bcc5aa | 2011-04-08 14:08:50 +0900 | [diff] [blame] | 278 | |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 279 | static int __init ehci_exynos_init(void) |
Manjunath Goudar | 7edb3da | 2013-04-02 18:24:01 +0200 | [diff] [blame] | 280 | { |
| 281 | if (usb_disabled()) |
| 282 | return -ENODEV; |
| 283 | |
| 284 | pr_info("%s: " DRIVER_DESC "\n", hcd_name); |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 285 | ehci_init_driver(&exynos_ehci_hc_driver, &exynos_overrides); |
| 286 | return platform_driver_register(&exynos_ehci_driver); |
Manjunath Goudar | 7edb3da | 2013-04-02 18:24:01 +0200 | [diff] [blame] | 287 | } |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 288 | module_init(ehci_exynos_init); |
Manjunath Goudar | 7edb3da | 2013-04-02 18:24:01 +0200 | [diff] [blame] | 289 | |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 290 | static void __exit ehci_exynos_cleanup(void) |
Manjunath Goudar | 7edb3da | 2013-04-02 18:24:01 +0200 | [diff] [blame] | 291 | { |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 292 | platform_driver_unregister(&exynos_ehci_driver); |
Manjunath Goudar | 7edb3da | 2013-04-02 18:24:01 +0200 | [diff] [blame] | 293 | } |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 294 | module_exit(ehci_exynos_cleanup); |
Manjunath Goudar | 7edb3da | 2013-04-02 18:24:01 +0200 | [diff] [blame] | 295 | |
| 296 | MODULE_DESCRIPTION(DRIVER_DESC); |
Jingoo Han | 29824c1 | 2013-10-10 16:42:47 +0900 | [diff] [blame] | 297 | MODULE_ALIAS("platform:exynos-ehci"); |
Manjunath Goudar | 7edb3da | 2013-04-02 18:24:01 +0200 | [diff] [blame] | 298 | MODULE_AUTHOR("Jingoo Han"); |
| 299 | MODULE_AUTHOR("Joonyoung Shim"); |
| 300 | MODULE_LICENSE("GPL v2"); |