Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Generic platform ehci driver |
| 3 | * |
| 4 | * Copyright 2007 Steven Brown <sbrown@cortland.com> |
| 5 | * Copyright 2010-2012 Hauke Mehrtens <hauke@hauke-m.de> |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 6 | * Copyright 2014 Hans de Goede <hdegoede@redhat.com> |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 7 | * |
| 8 | * Derived from the ohci-ssb driver |
| 9 | * Copyright 2007 Michael Buesch <m@bues.ch> |
| 10 | * |
| 11 | * Derived from the EHCI-PCI driver |
| 12 | * Copyright (c) 2000-2004 by David Brownell |
| 13 | * |
| 14 | * Derived from the ohci-pci driver |
| 15 | * Copyright 1999 Roman Weissgaerber |
| 16 | * Copyright 2000-2002 David Brownell |
| 17 | * Copyright 1999 Linus Torvalds |
| 18 | * Copyright 1999 Gregory P. Smith |
| 19 | * |
| 20 | * Licensed under the GNU/GPL. See COPYING for details. |
| 21 | */ |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 22 | #include <linux/clk.h> |
Arnd Bergmann | f3bc64d | 2013-03-27 21:44:22 +0000 | [diff] [blame] | 23 | #include <linux/dma-mapping.h> |
Thierry Reding | 148e113 | 2013-01-21 11:09:22 +0100 | [diff] [blame] | 24 | #include <linux/err.h> |
Alan Stern | 99f9193 | 2012-11-01 11:13:08 -0400 | [diff] [blame] | 25 | #include <linux/kernel.h> |
Alan Stern | d1bb67a | 2012-11-02 10:13:24 -0400 | [diff] [blame] | 26 | #include <linux/hrtimer.h> |
| 27 | #include <linux/io.h> |
Alan Stern | 99f9193 | 2012-11-01 11:13:08 -0400 | [diff] [blame] | 28 | #include <linux/module.h> |
Arnd Bergmann | f3bc64d | 2013-03-27 21:44:22 +0000 | [diff] [blame] | 29 | #include <linux/of.h> |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 30 | #include <linux/phy/phy.h> |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 31 | #include <linux/platform_device.h> |
Boris BREZILLON | 2d87bbd | 2014-05-13 17:44:19 +0200 | [diff] [blame] | 32 | #include <linux/reset.h> |
Alan Stern | 99f9193 | 2012-11-01 11:13:08 -0400 | [diff] [blame] | 33 | #include <linux/usb.h> |
| 34 | #include <linux/usb/hcd.h> |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 35 | #include <linux/usb/ehci_pdriver.h> |
| 36 | |
Alan Stern | 99f9193 | 2012-11-01 11:13:08 -0400 | [diff] [blame] | 37 | #include "ehci.h" |
| 38 | |
| 39 | #define DRIVER_DESC "EHCI generic platform driver" |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 40 | #define EHCI_MAX_CLKS 3 |
| 41 | #define hcd_to_ehci_priv(h) ((struct ehci_platform_priv *)hcd_to_ehci(h)->priv) |
| 42 | |
| 43 | struct ehci_platform_priv { |
| 44 | struct clk *clks[EHCI_MAX_CLKS]; |
Boris BREZILLON | 2d87bbd | 2014-05-13 17:44:19 +0200 | [diff] [blame] | 45 | struct reset_control *rst; |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 46 | struct phy *phy; |
| 47 | }; |
Alan Stern | 99f9193 | 2012-11-01 11:13:08 -0400 | [diff] [blame] | 48 | |
| 49 | static const char hcd_name[] = "ehci-platform"; |
| 50 | |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 51 | static int ehci_platform_reset(struct usb_hcd *hcd) |
| 52 | { |
| 53 | struct platform_device *pdev = to_platform_device(hcd->self.controller); |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 54 | struct usb_ehci_pdata *pdata = dev_get_platdata(&pdev->dev); |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 55 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
| 56 | int retval; |
| 57 | |
| 58 | hcd->has_tt = pdata->has_tt; |
| 59 | ehci->has_synopsys_hc_bug = pdata->has_synopsys_hc_bug; |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 60 | |
Sergei Shtylyov | 743fcce | 2013-06-02 01:33:56 +0400 | [diff] [blame] | 61 | if (pdata->pre_setup) { |
| 62 | retval = pdata->pre_setup(hcd); |
| 63 | if (retval < 0) |
| 64 | return retval; |
| 65 | } |
| 66 | |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 67 | ehci->caps = hcd->regs + pdata->caps_offset; |
| 68 | retval = ehci_setup(hcd); |
| 69 | if (retval) |
| 70 | return retval; |
| 71 | |
Florian Fainelli | 4534874 | 2012-10-08 15:11:21 +0200 | [diff] [blame] | 72 | if (pdata->no_io_watchdog) |
| 73 | ehci->need_io_watchdog = 0; |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 74 | return 0; |
| 75 | } |
| 76 | |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 77 | static int ehci_platform_power_on(struct platform_device *dev) |
| 78 | { |
| 79 | struct usb_hcd *hcd = platform_get_drvdata(dev); |
| 80 | struct ehci_platform_priv *priv = hcd_to_ehci_priv(hcd); |
| 81 | int clk, ret; |
| 82 | |
| 83 | for (clk = 0; clk < EHCI_MAX_CLKS && priv->clks[clk]; clk++) { |
| 84 | ret = clk_prepare_enable(priv->clks[clk]); |
| 85 | if (ret) |
| 86 | goto err_disable_clks; |
| 87 | } |
| 88 | |
| 89 | if (priv->phy) { |
| 90 | ret = phy_init(priv->phy); |
| 91 | if (ret) |
| 92 | goto err_disable_clks; |
| 93 | |
| 94 | ret = phy_power_on(priv->phy); |
| 95 | if (ret) |
| 96 | goto err_exit_phy; |
| 97 | } |
| 98 | |
| 99 | return 0; |
| 100 | |
| 101 | err_exit_phy: |
| 102 | phy_exit(priv->phy); |
| 103 | err_disable_clks: |
| 104 | while (--clk >= 0) |
| 105 | clk_disable_unprepare(priv->clks[clk]); |
| 106 | |
| 107 | return ret; |
| 108 | } |
| 109 | |
| 110 | static void ehci_platform_power_off(struct platform_device *dev) |
| 111 | { |
| 112 | struct usb_hcd *hcd = platform_get_drvdata(dev); |
| 113 | struct ehci_platform_priv *priv = hcd_to_ehci_priv(hcd); |
| 114 | int clk; |
| 115 | |
| 116 | if (priv->phy) { |
| 117 | phy_power_off(priv->phy); |
| 118 | phy_exit(priv->phy); |
| 119 | } |
| 120 | |
| 121 | for (clk = EHCI_MAX_CLKS - 1; clk >= 0; clk--) |
| 122 | if (priv->clks[clk]) |
| 123 | clk_disable_unprepare(priv->clks[clk]); |
| 124 | } |
| 125 | |
Alan Stern | 99f9193 | 2012-11-01 11:13:08 -0400 | [diff] [blame] | 126 | static struct hc_driver __read_mostly ehci_platform_hc_driver; |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 127 | |
Andi Kleen | 62d08a1 | 2013-04-22 09:44:56 -0700 | [diff] [blame] | 128 | static const struct ehci_driver_overrides platform_overrides __initconst = { |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 129 | .reset = ehci_platform_reset, |
| 130 | .extra_priv_size = sizeof(struct ehci_platform_priv), |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 131 | }; |
| 132 | |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 133 | static struct usb_ehci_pdata ehci_platform_defaults = { |
| 134 | .power_on = ehci_platform_power_on, |
| 135 | .power_suspend = ehci_platform_power_off, |
| 136 | .power_off = ehci_platform_power_off, |
| 137 | }; |
Arnd Bergmann | f3bc64d | 2013-03-27 21:44:22 +0000 | [diff] [blame] | 138 | |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 139 | static int ehci_platform_probe(struct platform_device *dev) |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 140 | { |
| 141 | struct usb_hcd *hcd; |
| 142 | struct resource *res_mem; |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 143 | struct usb_ehci_pdata *pdata = dev_get_platdata(&dev->dev); |
| 144 | struct ehci_platform_priv *priv; |
Hans de Goede | ad3db5d | 2014-02-07 16:36:43 +0100 | [diff] [blame] | 145 | struct ehci_hcd *ehci; |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 146 | int err, irq, clk = 0; |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 147 | |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 148 | if (usb_disabled()) |
| 149 | return -ENODEV; |
| 150 | |
Arnd Bergmann | f3bc64d | 2013-03-27 21:44:22 +0000 | [diff] [blame] | 151 | /* |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 152 | * Use reasonable defaults so platforms don't have to provide these |
| 153 | * with DT probing on ARM. |
Arnd Bergmann | f3bc64d | 2013-03-27 21:44:22 +0000 | [diff] [blame] | 154 | */ |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 155 | if (!pdata) |
| 156 | pdata = &ehci_platform_defaults; |
Russell King | e1fd734 | 2013-06-27 12:36:37 +0100 | [diff] [blame] | 157 | |
| 158 | err = dma_coerce_mask_and_coherent(&dev->dev, DMA_BIT_MASK(32)); |
Russell King | 22d9d8e | 2013-06-10 16:28:49 +0100 | [diff] [blame] | 159 | if (err) |
| 160 | return err; |
Arnd Bergmann | f3bc64d | 2013-03-27 21:44:22 +0000 | [diff] [blame] | 161 | |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 162 | irq = platform_get_irq(dev, 0); |
| 163 | if (irq < 0) { |
Florian Fainelli | 2350cb0 | 2012-10-08 15:11:41 +0200 | [diff] [blame] | 164 | dev_err(&dev->dev, "no irq provided"); |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 165 | return irq; |
| 166 | } |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 167 | |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 168 | hcd = usb_create_hcd(&ehci_platform_hc_driver, &dev->dev, |
| 169 | dev_name(&dev->dev)); |
| 170 | if (!hcd) |
| 171 | return -ENOMEM; |
| 172 | |
| 173 | platform_set_drvdata(dev, hcd); |
| 174 | dev->dev.platform_data = pdata; |
| 175 | priv = hcd_to_ehci_priv(hcd); |
Hans de Goede | ad3db5d | 2014-02-07 16:36:43 +0100 | [diff] [blame] | 176 | ehci = hcd_to_ehci(hcd); |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 177 | |
| 178 | if (pdata == &ehci_platform_defaults && dev->dev.of_node) { |
Hans de Goede | ad3db5d | 2014-02-07 16:36:43 +0100 | [diff] [blame] | 179 | if (of_property_read_bool(dev->dev.of_node, "big-endian-regs")) |
| 180 | ehci->big_endian_mmio = 1; |
| 181 | |
| 182 | if (of_property_read_bool(dev->dev.of_node, "big-endian-desc")) |
| 183 | ehci->big_endian_desc = 1; |
| 184 | |
| 185 | if (of_property_read_bool(dev->dev.of_node, "big-endian")) |
| 186 | ehci->big_endian_mmio = ehci->big_endian_desc = 1; |
| 187 | |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 188 | priv->phy = devm_phy_get(&dev->dev, "usb"); |
| 189 | if (IS_ERR(priv->phy)) { |
| 190 | err = PTR_ERR(priv->phy); |
| 191 | if (err == -EPROBE_DEFER) |
| 192 | goto err_put_hcd; |
| 193 | priv->phy = NULL; |
| 194 | } |
| 195 | |
| 196 | for (clk = 0; clk < EHCI_MAX_CLKS; clk++) { |
| 197 | priv->clks[clk] = of_clk_get(dev->dev.of_node, clk); |
| 198 | if (IS_ERR(priv->clks[clk])) { |
| 199 | err = PTR_ERR(priv->clks[clk]); |
| 200 | if (err == -EPROBE_DEFER) |
| 201 | goto err_put_clks; |
| 202 | priv->clks[clk] = NULL; |
| 203 | break; |
| 204 | } |
| 205 | } |
| 206 | } |
| 207 | |
Boris BREZILLON | 2d87bbd | 2014-05-13 17:44:19 +0200 | [diff] [blame] | 208 | priv->rst = devm_reset_control_get_optional(&dev->dev, NULL); |
| 209 | if (IS_ERR(priv->rst)) { |
| 210 | err = PTR_ERR(priv->rst); |
| 211 | if (err == -EPROBE_DEFER) |
| 212 | goto err_put_clks; |
| 213 | priv->rst = NULL; |
| 214 | } else { |
| 215 | err = reset_control_deassert(priv->rst); |
| 216 | if (err) |
| 217 | goto err_put_clks; |
| 218 | } |
| 219 | |
Alan Stern | 843d5e0 | 2014-02-11 11:26:10 -0500 | [diff] [blame] | 220 | if (pdata->big_endian_desc) |
| 221 | ehci->big_endian_desc = 1; |
| 222 | if (pdata->big_endian_mmio) |
| 223 | ehci->big_endian_mmio = 1; |
| 224 | |
| 225 | #ifndef CONFIG_USB_EHCI_BIG_ENDIAN_MMIO |
| 226 | if (ehci->big_endian_mmio) { |
| 227 | dev_err(&dev->dev, |
| 228 | "Error: CONFIG_USB_EHCI_BIG_ENDIAN_MMIO not set\n"); |
| 229 | err = -EINVAL; |
Boris BREZILLON | 2d87bbd | 2014-05-13 17:44:19 +0200 | [diff] [blame] | 230 | goto err_reset; |
Alan Stern | 843d5e0 | 2014-02-11 11:26:10 -0500 | [diff] [blame] | 231 | } |
| 232 | #endif |
| 233 | #ifndef CONFIG_USB_EHCI_BIG_ENDIAN_DESC |
| 234 | if (ehci->big_endian_desc) { |
| 235 | dev_err(&dev->dev, |
| 236 | "Error: CONFIG_USB_EHCI_BIG_ENDIAN_DESC not set\n"); |
| 237 | err = -EINVAL; |
Boris BREZILLON | 2d87bbd | 2014-05-13 17:44:19 +0200 | [diff] [blame] | 238 | goto err_reset; |
Alan Stern | 843d5e0 | 2014-02-11 11:26:10 -0500 | [diff] [blame] | 239 | } |
| 240 | #endif |
| 241 | |
Kuninori Morimoto | 04216be | 2012-08-06 18:08:39 -0700 | [diff] [blame] | 242 | if (pdata->power_on) { |
| 243 | err = pdata->power_on(dev); |
| 244 | if (err < 0) |
Boris BREZILLON | 2d87bbd | 2014-05-13 17:44:19 +0200 | [diff] [blame] | 245 | goto err_reset; |
Kuninori Morimoto | 04216be | 2012-08-06 18:08:39 -0700 | [diff] [blame] | 246 | } |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 247 | |
Varka Bhadram | 2062ff4 | 2014-11-04 07:51:25 +0530 | [diff] [blame^] | 248 | res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0); |
Thierry Reding | 148e113 | 2013-01-21 11:09:22 +0100 | [diff] [blame] | 249 | hcd->regs = devm_ioremap_resource(&dev->dev, res_mem); |
| 250 | if (IS_ERR(hcd->regs)) { |
| 251 | err = PTR_ERR(hcd->regs); |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 252 | goto err_power; |
Julia Lawall | ec03ad8 | 2012-08-14 08:47:38 +0200 | [diff] [blame] | 253 | } |
Varka Bhadram | 2062ff4 | 2014-11-04 07:51:25 +0530 | [diff] [blame^] | 254 | hcd->rsrc_start = res_mem->start; |
| 255 | hcd->rsrc_len = resource_size(res_mem); |
| 256 | |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 257 | err = usb_add_hcd(hcd, irq, IRQF_SHARED); |
| 258 | if (err) |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 259 | goto err_power; |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 260 | |
Peter Chen | 3c9740a | 2013-11-05 10:46:02 +0800 | [diff] [blame] | 261 | device_wakeup_enable(hcd->self.controller); |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 262 | platform_set_drvdata(dev, hcd); |
| 263 | |
| 264 | return err; |
| 265 | |
Kuninori Morimoto | 04216be | 2012-08-06 18:08:39 -0700 | [diff] [blame] | 266 | err_power: |
| 267 | if (pdata->power_off) |
| 268 | pdata->power_off(dev); |
Boris BREZILLON | 2d87bbd | 2014-05-13 17:44:19 +0200 | [diff] [blame] | 269 | err_reset: |
| 270 | if (priv->rst) |
| 271 | reset_control_assert(priv->rst); |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 272 | err_put_clks: |
| 273 | while (--clk >= 0) |
| 274 | clk_put(priv->clks[clk]); |
| 275 | err_put_hcd: |
| 276 | if (pdata == &ehci_platform_defaults) |
| 277 | dev->dev.platform_data = NULL; |
| 278 | |
| 279 | usb_put_hcd(hcd); |
Kuninori Morimoto | 04216be | 2012-08-06 18:08:39 -0700 | [diff] [blame] | 280 | |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 281 | return err; |
| 282 | } |
| 283 | |
Bill Pemberton | fb4e98a | 2012-11-19 13:26:20 -0500 | [diff] [blame] | 284 | static int ehci_platform_remove(struct platform_device *dev) |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 285 | { |
| 286 | struct usb_hcd *hcd = platform_get_drvdata(dev); |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 287 | struct usb_ehci_pdata *pdata = dev_get_platdata(&dev->dev); |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 288 | struct ehci_platform_priv *priv = hcd_to_ehci_priv(hcd); |
| 289 | int clk; |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 290 | |
| 291 | usb_remove_hcd(hcd); |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 292 | |
Kuninori Morimoto | 04216be | 2012-08-06 18:08:39 -0700 | [diff] [blame] | 293 | if (pdata->power_off) |
| 294 | pdata->power_off(dev); |
| 295 | |
Boris BREZILLON | 2d87bbd | 2014-05-13 17:44:19 +0200 | [diff] [blame] | 296 | if (priv->rst) |
| 297 | reset_control_assert(priv->rst); |
| 298 | |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 299 | for (clk = 0; clk < EHCI_MAX_CLKS && priv->clks[clk]; clk++) |
| 300 | clk_put(priv->clks[clk]); |
| 301 | |
| 302 | usb_put_hcd(hcd); |
| 303 | |
Arnd Bergmann | f3bc64d | 2013-03-27 21:44:22 +0000 | [diff] [blame] | 304 | if (pdata == &ehci_platform_defaults) |
| 305 | dev->dev.platform_data = NULL; |
| 306 | |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 307 | return 0; |
| 308 | } |
| 309 | |
Wonhong Kwon | 5e4ccd9 | 2014-10-24 13:45:47 +0900 | [diff] [blame] | 310 | #ifdef CONFIG_PM_SLEEP |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 311 | static int ehci_platform_suspend(struct device *dev) |
| 312 | { |
| 313 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 314 | struct usb_ehci_pdata *pdata = dev_get_platdata(dev); |
Kuninori Morimoto | 04216be | 2012-08-06 18:08:39 -0700 | [diff] [blame] | 315 | struct platform_device *pdev = |
| 316 | container_of(dev, struct platform_device, dev); |
Alan Stern | c5cf921 | 2012-06-28 11:19:02 -0400 | [diff] [blame] | 317 | bool do_wakeup = device_may_wakeup(dev); |
Kuninori Morimoto | 04216be | 2012-08-06 18:08:39 -0700 | [diff] [blame] | 318 | int ret; |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 319 | |
Kuninori Morimoto | 04216be | 2012-08-06 18:08:39 -0700 | [diff] [blame] | 320 | ret = ehci_suspend(hcd, do_wakeup); |
Vivek Gautam | e155b5b | 2014-04-10 15:58:02 +0530 | [diff] [blame] | 321 | if (ret) |
| 322 | return ret; |
Kuninori Morimoto | 04216be | 2012-08-06 18:08:39 -0700 | [diff] [blame] | 323 | |
| 324 | if (pdata->power_suspend) |
| 325 | pdata->power_suspend(pdev); |
| 326 | |
| 327 | return ret; |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 328 | } |
| 329 | |
| 330 | static int ehci_platform_resume(struct device *dev) |
| 331 | { |
| 332 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 333 | struct usb_ehci_pdata *pdata = dev_get_platdata(dev); |
Kuninori Morimoto | 04216be | 2012-08-06 18:08:39 -0700 | [diff] [blame] | 334 | struct platform_device *pdev = |
| 335 | container_of(dev, struct platform_device, dev); |
| 336 | |
| 337 | if (pdata->power_on) { |
| 338 | int err = pdata->power_on(pdev); |
| 339 | if (err < 0) |
| 340 | return err; |
| 341 | } |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 342 | |
Alan Stern | c5cf921 | 2012-06-28 11:19:02 -0400 | [diff] [blame] | 343 | ehci_resume(hcd, false); |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 344 | return 0; |
| 345 | } |
Wonhong Kwon | 5e4ccd9 | 2014-10-24 13:45:47 +0900 | [diff] [blame] | 346 | #endif /* CONFIG_PM_SLEEP */ |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 347 | |
Arnd Bergmann | f3bc64d | 2013-03-27 21:44:22 +0000 | [diff] [blame] | 348 | static const struct of_device_id vt8500_ehci_ids[] = { |
| 349 | { .compatible = "via,vt8500-ehci", }, |
| 350 | { .compatible = "wm,prizm-ehci", }, |
Hans de Goede | 915974c | 2014-02-11 17:35:29 +0100 | [diff] [blame] | 351 | { .compatible = "generic-ehci", }, |
Arnd Bergmann | f3bc64d | 2013-03-27 21:44:22 +0000 | [diff] [blame] | 352 | {} |
| 353 | }; |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 354 | MODULE_DEVICE_TABLE(of, vt8500_ehci_ids); |
Arnd Bergmann | f3bc64d | 2013-03-27 21:44:22 +0000 | [diff] [blame] | 355 | |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 356 | static const struct platform_device_id ehci_platform_table[] = { |
| 357 | { "ehci-platform", 0 }, |
| 358 | { } |
| 359 | }; |
| 360 | MODULE_DEVICE_TABLE(platform, ehci_platform_table); |
| 361 | |
Wonhong Kwon | 5e4ccd9 | 2014-10-24 13:45:47 +0900 | [diff] [blame] | 362 | static SIMPLE_DEV_PM_OPS(ehci_platform_pm_ops, ehci_platform_suspend, |
| 363 | ehci_platform_resume); |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 364 | |
| 365 | static struct platform_driver ehci_platform_driver = { |
| 366 | .id_table = ehci_platform_table, |
| 367 | .probe = ehci_platform_probe, |
Bill Pemberton | 7690417 | 2012-11-19 13:21:08 -0500 | [diff] [blame] | 368 | .remove = ehci_platform_remove, |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 369 | .shutdown = usb_hcd_platform_shutdown, |
| 370 | .driver = { |
| 371 | .owner = THIS_MODULE, |
| 372 | .name = "ehci-platform", |
| 373 | .pm = &ehci_platform_pm_ops, |
Sachin Kamat | ae5e5f7 | 2013-05-21 17:17:16 +0530 | [diff] [blame] | 374 | .of_match_table = vt8500_ehci_ids, |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 375 | } |
| 376 | }; |
Alan Stern | 99f9193 | 2012-11-01 11:13:08 -0400 | [diff] [blame] | 377 | |
| 378 | static int __init ehci_platform_init(void) |
| 379 | { |
| 380 | if (usb_disabled()) |
| 381 | return -ENODEV; |
| 382 | |
| 383 | pr_info("%s: " DRIVER_DESC "\n", hcd_name); |
| 384 | |
| 385 | ehci_init_driver(&ehci_platform_hc_driver, &platform_overrides); |
| 386 | return platform_driver_register(&ehci_platform_driver); |
| 387 | } |
| 388 | module_init(ehci_platform_init); |
| 389 | |
| 390 | static void __exit ehci_platform_cleanup(void) |
| 391 | { |
| 392 | platform_driver_unregister(&ehci_platform_driver); |
| 393 | } |
| 394 | module_exit(ehci_platform_cleanup); |
| 395 | |
| 396 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 397 | MODULE_AUTHOR("Hauke Mehrtens"); |
| 398 | MODULE_AUTHOR("Alan Stern"); |
| 399 | MODULE_LICENSE("GPL"); |