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; |
Arun Ramamurthy | 7e7a0e6 | 2015-01-19 16:05:29 -0800 | [diff] [blame] | 46 | struct phy **phys; |
| 47 | int num_phys; |
Alban Bedel | b4629a7 | 2015-08-04 10:59:17 +0200 | [diff] [blame] | 48 | bool reset_on_resume; |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 49 | }; |
Alan Stern | 99f9193 | 2012-11-01 11:13:08 -0400 | [diff] [blame] | 50 | |
| 51 | static const char hcd_name[] = "ehci-platform"; |
| 52 | |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 53 | static int ehci_platform_reset(struct usb_hcd *hcd) |
| 54 | { |
| 55 | struct platform_device *pdev = to_platform_device(hcd->self.controller); |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 56 | struct usb_ehci_pdata *pdata = dev_get_platdata(&pdev->dev); |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 57 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
| 58 | int retval; |
| 59 | |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 60 | ehci->has_synopsys_hc_bug = pdata->has_synopsys_hc_bug; |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 61 | |
Sergei Shtylyov | 743fcce | 2013-06-02 01:33:56 +0400 | [diff] [blame] | 62 | if (pdata->pre_setup) { |
| 63 | retval = pdata->pre_setup(hcd); |
| 64 | if (retval < 0) |
| 65 | return retval; |
| 66 | } |
| 67 | |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 68 | ehci->caps = hcd->regs + pdata->caps_offset; |
| 69 | retval = ehci_setup(hcd); |
| 70 | if (retval) |
| 71 | return retval; |
| 72 | |
Florian Fainelli | 4534874 | 2012-10-08 15:11:21 +0200 | [diff] [blame] | 73 | if (pdata->no_io_watchdog) |
| 74 | ehci->need_io_watchdog = 0; |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 75 | return 0; |
| 76 | } |
| 77 | |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 78 | static int ehci_platform_power_on(struct platform_device *dev) |
| 79 | { |
| 80 | struct usb_hcd *hcd = platform_get_drvdata(dev); |
| 81 | struct ehci_platform_priv *priv = hcd_to_ehci_priv(hcd); |
Arun Ramamurthy | 7e7a0e6 | 2015-01-19 16:05:29 -0800 | [diff] [blame] | 82 | int clk, ret, phy_num; |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 83 | |
| 84 | for (clk = 0; clk < EHCI_MAX_CLKS && priv->clks[clk]; clk++) { |
| 85 | ret = clk_prepare_enable(priv->clks[clk]); |
| 86 | if (ret) |
| 87 | goto err_disable_clks; |
| 88 | } |
| 89 | |
Arun Ramamurthy | 7e7a0e6 | 2015-01-19 16:05:29 -0800 | [diff] [blame] | 90 | for (phy_num = 0; phy_num < priv->num_phys; phy_num++) { |
Arun Ramamurthy | 216e299 | 2015-04-22 16:04:12 -0700 | [diff] [blame] | 91 | ret = phy_init(priv->phys[phy_num]); |
| 92 | if (ret) |
| 93 | goto err_exit_phy; |
| 94 | ret = phy_power_on(priv->phys[phy_num]); |
| 95 | if (ret) { |
| 96 | phy_exit(priv->phys[phy_num]); |
| 97 | goto err_exit_phy; |
Arun Ramamurthy | 7e7a0e6 | 2015-01-19 16:05:29 -0800 | [diff] [blame] | 98 | } |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 99 | } |
| 100 | |
| 101 | return 0; |
| 102 | |
| 103 | err_exit_phy: |
Arun Ramamurthy | 7e7a0e6 | 2015-01-19 16:05:29 -0800 | [diff] [blame] | 104 | while (--phy_num >= 0) { |
Arun Ramamurthy | 216e299 | 2015-04-22 16:04:12 -0700 | [diff] [blame] | 105 | phy_power_off(priv->phys[phy_num]); |
| 106 | phy_exit(priv->phys[phy_num]); |
Arun Ramamurthy | 7e7a0e6 | 2015-01-19 16:05:29 -0800 | [diff] [blame] | 107 | } |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 108 | err_disable_clks: |
| 109 | while (--clk >= 0) |
| 110 | clk_disable_unprepare(priv->clks[clk]); |
| 111 | |
| 112 | return ret; |
| 113 | } |
| 114 | |
| 115 | static void ehci_platform_power_off(struct platform_device *dev) |
| 116 | { |
| 117 | struct usb_hcd *hcd = platform_get_drvdata(dev); |
| 118 | struct ehci_platform_priv *priv = hcd_to_ehci_priv(hcd); |
Arun Ramamurthy | 7e7a0e6 | 2015-01-19 16:05:29 -0800 | [diff] [blame] | 119 | int clk, phy_num; |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 120 | |
Arun Ramamurthy | 7e7a0e6 | 2015-01-19 16:05:29 -0800 | [diff] [blame] | 121 | for (phy_num = 0; phy_num < priv->num_phys; phy_num++) { |
Arun Ramamurthy | 216e299 | 2015-04-22 16:04:12 -0700 | [diff] [blame] | 122 | phy_power_off(priv->phys[phy_num]); |
| 123 | phy_exit(priv->phys[phy_num]); |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 124 | } |
| 125 | |
| 126 | for (clk = EHCI_MAX_CLKS - 1; clk >= 0; clk--) |
| 127 | if (priv->clks[clk]) |
| 128 | clk_disable_unprepare(priv->clks[clk]); |
| 129 | } |
| 130 | |
Alan Stern | 99f9193 | 2012-11-01 11:13:08 -0400 | [diff] [blame] | 131 | static struct hc_driver __read_mostly ehci_platform_hc_driver; |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 132 | |
Andi Kleen | 62d08a1 | 2013-04-22 09:44:56 -0700 | [diff] [blame] | 133 | static const struct ehci_driver_overrides platform_overrides __initconst = { |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 134 | .reset = ehci_platform_reset, |
| 135 | .extra_priv_size = sizeof(struct ehci_platform_priv), |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 136 | }; |
| 137 | |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 138 | static struct usb_ehci_pdata ehci_platform_defaults = { |
| 139 | .power_on = ehci_platform_power_on, |
| 140 | .power_suspend = ehci_platform_power_off, |
| 141 | .power_off = ehci_platform_power_off, |
| 142 | }; |
Arnd Bergmann | f3bc64d | 2013-03-27 21:44:22 +0000 | [diff] [blame] | 143 | |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 144 | static int ehci_platform_probe(struct platform_device *dev) |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 145 | { |
| 146 | struct usb_hcd *hcd; |
| 147 | struct resource *res_mem; |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 148 | struct usb_ehci_pdata *pdata = dev_get_platdata(&dev->dev); |
| 149 | struct ehci_platform_priv *priv; |
Hans de Goede | ad3db5d | 2014-02-07 16:36:43 +0100 | [diff] [blame] | 150 | struct ehci_hcd *ehci; |
Arun Ramamurthy | 7e7a0e6 | 2015-01-19 16:05:29 -0800 | [diff] [blame] | 151 | int err, irq, phy_num, clk = 0; |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 152 | |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 153 | if (usb_disabled()) |
| 154 | return -ENODEV; |
| 155 | |
Arnd Bergmann | f3bc64d | 2013-03-27 21:44:22 +0000 | [diff] [blame] | 156 | /* |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 157 | * Use reasonable defaults so platforms don't have to provide these |
| 158 | * with DT probing on ARM. |
Arnd Bergmann | f3bc64d | 2013-03-27 21:44:22 +0000 | [diff] [blame] | 159 | */ |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 160 | if (!pdata) |
| 161 | pdata = &ehci_platform_defaults; |
Russell King | e1fd734 | 2013-06-27 12:36:37 +0100 | [diff] [blame] | 162 | |
Andreas Herrmann | c99e76c | 2015-01-12 16:05:52 +0100 | [diff] [blame] | 163 | err = dma_coerce_mask_and_coherent(&dev->dev, |
| 164 | pdata->dma_mask_64 ? DMA_BIT_MASK(64) : DMA_BIT_MASK(32)); |
Russell King | 22d9d8e | 2013-06-10 16:28:49 +0100 | [diff] [blame] | 165 | if (err) |
| 166 | return err; |
Arnd Bergmann | f3bc64d | 2013-03-27 21:44:22 +0000 | [diff] [blame] | 167 | |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 168 | irq = platform_get_irq(dev, 0); |
| 169 | if (irq < 0) { |
Florian Fainelli | 2350cb0 | 2012-10-08 15:11:41 +0200 | [diff] [blame] | 170 | dev_err(&dev->dev, "no irq provided"); |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 171 | return irq; |
| 172 | } |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 173 | |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 174 | hcd = usb_create_hcd(&ehci_platform_hc_driver, &dev->dev, |
| 175 | dev_name(&dev->dev)); |
| 176 | if (!hcd) |
| 177 | return -ENOMEM; |
| 178 | |
| 179 | platform_set_drvdata(dev, hcd); |
| 180 | dev->dev.platform_data = pdata; |
| 181 | priv = hcd_to_ehci_priv(hcd); |
Hans de Goede | ad3db5d | 2014-02-07 16:36:43 +0100 | [diff] [blame] | 182 | ehci = hcd_to_ehci(hcd); |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 183 | |
| 184 | if (pdata == &ehci_platform_defaults && dev->dev.of_node) { |
Hans de Goede | ad3db5d | 2014-02-07 16:36:43 +0100 | [diff] [blame] | 185 | if (of_property_read_bool(dev->dev.of_node, "big-endian-regs")) |
| 186 | ehci->big_endian_mmio = 1; |
| 187 | |
| 188 | if (of_property_read_bool(dev->dev.of_node, "big-endian-desc")) |
| 189 | ehci->big_endian_desc = 1; |
| 190 | |
| 191 | if (of_property_read_bool(dev->dev.of_node, "big-endian")) |
| 192 | ehci->big_endian_mmio = ehci->big_endian_desc = 1; |
| 193 | |
Wu Liang feng | 314b41b | 2014-12-24 18:22:19 +0800 | [diff] [blame] | 194 | if (of_property_read_bool(dev->dev.of_node, |
| 195 | "needs-reset-on-resume")) |
Alban Bedel | b4629a7 | 2015-08-04 10:59:17 +0200 | [diff] [blame] | 196 | priv->reset_on_resume = true; |
Wu Liang feng | 314b41b | 2014-12-24 18:22:19 +0800 | [diff] [blame] | 197 | |
Joachim Eastwood | 40f2f2a | 2015-05-16 17:17:40 +0200 | [diff] [blame] | 198 | if (of_property_read_bool(dev->dev.of_node, |
| 199 | "has-transaction-translator")) |
Alban Bedel | b4629a7 | 2015-08-04 10:59:17 +0200 | [diff] [blame] | 200 | hcd->has_tt = 1; |
Joachim Eastwood | 40f2f2a | 2015-05-16 17:17:40 +0200 | [diff] [blame] | 201 | |
Arun Ramamurthy | 7e7a0e6 | 2015-01-19 16:05:29 -0800 | [diff] [blame] | 202 | priv->num_phys = of_count_phandle_with_args(dev->dev.of_node, |
| 203 | "phys", "#phy-cells"); |
Arun Ramamurthy | 7e7a0e6 | 2015-01-19 16:05:29 -0800 | [diff] [blame] | 204 | |
Arun Ramamurthy | 216e299 | 2015-04-22 16:04:12 -0700 | [diff] [blame] | 205 | if (priv->num_phys > 0) { |
| 206 | priv->phys = devm_kcalloc(&dev->dev, priv->num_phys, |
| 207 | sizeof(struct phy *), GFP_KERNEL); |
| 208 | if (!priv->phys) |
| 209 | return -ENOMEM; |
| 210 | } else |
| 211 | priv->num_phys = 0; |
Arun Ramamurthy | 7e7a0e6 | 2015-01-19 16:05:29 -0800 | [diff] [blame] | 212 | |
| 213 | for (phy_num = 0; phy_num < priv->num_phys; phy_num++) { |
Arun Ramamurthy | 216e299 | 2015-04-22 16:04:12 -0700 | [diff] [blame] | 214 | priv->phys[phy_num] = devm_of_phy_get_by_index( |
| 215 | &dev->dev, dev->dev.of_node, phy_num); |
| 216 | if (IS_ERR(priv->phys[phy_num])) { |
| 217 | err = PTR_ERR(priv->phys[phy_num]); |
| 218 | goto err_put_hcd; |
| 219 | } |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 220 | } |
| 221 | |
| 222 | for (clk = 0; clk < EHCI_MAX_CLKS; clk++) { |
| 223 | priv->clks[clk] = of_clk_get(dev->dev.of_node, clk); |
| 224 | if (IS_ERR(priv->clks[clk])) { |
| 225 | err = PTR_ERR(priv->clks[clk]); |
| 226 | if (err == -EPROBE_DEFER) |
| 227 | goto err_put_clks; |
| 228 | priv->clks[clk] = NULL; |
| 229 | break; |
| 230 | } |
| 231 | } |
| 232 | } |
| 233 | |
Boris BREZILLON | 2d87bbd | 2014-05-13 17:44:19 +0200 | [diff] [blame] | 234 | priv->rst = devm_reset_control_get_optional(&dev->dev, NULL); |
| 235 | if (IS_ERR(priv->rst)) { |
| 236 | err = PTR_ERR(priv->rst); |
| 237 | if (err == -EPROBE_DEFER) |
| 238 | goto err_put_clks; |
| 239 | priv->rst = NULL; |
| 240 | } else { |
| 241 | err = reset_control_deassert(priv->rst); |
| 242 | if (err) |
| 243 | goto err_put_clks; |
| 244 | } |
| 245 | |
Alan Stern | 843d5e0 | 2014-02-11 11:26:10 -0500 | [diff] [blame] | 246 | if (pdata->big_endian_desc) |
| 247 | ehci->big_endian_desc = 1; |
| 248 | if (pdata->big_endian_mmio) |
| 249 | ehci->big_endian_mmio = 1; |
Alban Bedel | b4629a7 | 2015-08-04 10:59:17 +0200 | [diff] [blame] | 250 | if (pdata->has_tt) |
| 251 | hcd->has_tt = 1; |
| 252 | if (pdata->reset_on_resume) |
| 253 | priv->reset_on_resume = true; |
Alan Stern | 843d5e0 | 2014-02-11 11:26:10 -0500 | [diff] [blame] | 254 | |
| 255 | #ifndef CONFIG_USB_EHCI_BIG_ENDIAN_MMIO |
| 256 | if (ehci->big_endian_mmio) { |
| 257 | dev_err(&dev->dev, |
| 258 | "Error: CONFIG_USB_EHCI_BIG_ENDIAN_MMIO not set\n"); |
| 259 | err = -EINVAL; |
Boris BREZILLON | 2d87bbd | 2014-05-13 17:44:19 +0200 | [diff] [blame] | 260 | goto err_reset; |
Alan Stern | 843d5e0 | 2014-02-11 11:26:10 -0500 | [diff] [blame] | 261 | } |
| 262 | #endif |
| 263 | #ifndef CONFIG_USB_EHCI_BIG_ENDIAN_DESC |
| 264 | if (ehci->big_endian_desc) { |
| 265 | dev_err(&dev->dev, |
| 266 | "Error: CONFIG_USB_EHCI_BIG_ENDIAN_DESC not set\n"); |
| 267 | err = -EINVAL; |
Boris BREZILLON | 2d87bbd | 2014-05-13 17:44:19 +0200 | [diff] [blame] | 268 | goto err_reset; |
Alan Stern | 843d5e0 | 2014-02-11 11:26:10 -0500 | [diff] [blame] | 269 | } |
| 270 | #endif |
| 271 | |
Kuninori Morimoto | 04216be | 2012-08-06 18:08:39 -0700 | [diff] [blame] | 272 | if (pdata->power_on) { |
| 273 | err = pdata->power_on(dev); |
| 274 | if (err < 0) |
Boris BREZILLON | 2d87bbd | 2014-05-13 17:44:19 +0200 | [diff] [blame] | 275 | goto err_reset; |
Kuninori Morimoto | 04216be | 2012-08-06 18:08:39 -0700 | [diff] [blame] | 276 | } |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 277 | |
Varka Bhadram | 2062ff4 | 2014-11-04 07:51:25 +0530 | [diff] [blame] | 278 | res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0); |
Thierry Reding | 148e113 | 2013-01-21 11:09:22 +0100 | [diff] [blame] | 279 | hcd->regs = devm_ioremap_resource(&dev->dev, res_mem); |
| 280 | if (IS_ERR(hcd->regs)) { |
| 281 | err = PTR_ERR(hcd->regs); |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 282 | goto err_power; |
Julia Lawall | ec03ad8 | 2012-08-14 08:47:38 +0200 | [diff] [blame] | 283 | } |
Varka Bhadram | 2062ff4 | 2014-11-04 07:51:25 +0530 | [diff] [blame] | 284 | hcd->rsrc_start = res_mem->start; |
| 285 | hcd->rsrc_len = resource_size(res_mem); |
| 286 | |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 287 | err = usb_add_hcd(hcd, irq, IRQF_SHARED); |
| 288 | if (err) |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 289 | goto err_power; |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 290 | |
Peter Chen | 3c9740a | 2013-11-05 10:46:02 +0800 | [diff] [blame] | 291 | device_wakeup_enable(hcd->self.controller); |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 292 | platform_set_drvdata(dev, hcd); |
| 293 | |
| 294 | return err; |
| 295 | |
Kuninori Morimoto | 04216be | 2012-08-06 18:08:39 -0700 | [diff] [blame] | 296 | err_power: |
| 297 | if (pdata->power_off) |
| 298 | pdata->power_off(dev); |
Boris BREZILLON | 2d87bbd | 2014-05-13 17:44:19 +0200 | [diff] [blame] | 299 | err_reset: |
| 300 | if (priv->rst) |
| 301 | reset_control_assert(priv->rst); |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 302 | err_put_clks: |
| 303 | while (--clk >= 0) |
| 304 | clk_put(priv->clks[clk]); |
| 305 | err_put_hcd: |
| 306 | if (pdata == &ehci_platform_defaults) |
| 307 | dev->dev.platform_data = NULL; |
| 308 | |
| 309 | usb_put_hcd(hcd); |
Kuninori Morimoto | 04216be | 2012-08-06 18:08:39 -0700 | [diff] [blame] | 310 | |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 311 | return err; |
| 312 | } |
| 313 | |
Bill Pemberton | fb4e98a | 2012-11-19 13:26:20 -0500 | [diff] [blame] | 314 | static int ehci_platform_remove(struct platform_device *dev) |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 315 | { |
| 316 | struct usb_hcd *hcd = platform_get_drvdata(dev); |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 317 | struct usb_ehci_pdata *pdata = dev_get_platdata(&dev->dev); |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 318 | struct ehci_platform_priv *priv = hcd_to_ehci_priv(hcd); |
| 319 | int clk; |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 320 | |
| 321 | usb_remove_hcd(hcd); |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 322 | |
Kuninori Morimoto | 04216be | 2012-08-06 18:08:39 -0700 | [diff] [blame] | 323 | if (pdata->power_off) |
| 324 | pdata->power_off(dev); |
| 325 | |
Boris BREZILLON | 2d87bbd | 2014-05-13 17:44:19 +0200 | [diff] [blame] | 326 | if (priv->rst) |
| 327 | reset_control_assert(priv->rst); |
| 328 | |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 329 | for (clk = 0; clk < EHCI_MAX_CLKS && priv->clks[clk]; clk++) |
| 330 | clk_put(priv->clks[clk]); |
| 331 | |
| 332 | usb_put_hcd(hcd); |
| 333 | |
Arnd Bergmann | f3bc64d | 2013-03-27 21:44:22 +0000 | [diff] [blame] | 334 | if (pdata == &ehci_platform_defaults) |
| 335 | dev->dev.platform_data = NULL; |
| 336 | |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 337 | return 0; |
| 338 | } |
| 339 | |
Wonhong Kwon | 5e4ccd9 | 2014-10-24 13:45:47 +0900 | [diff] [blame] | 340 | #ifdef CONFIG_PM_SLEEP |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 341 | static int ehci_platform_suspend(struct device *dev) |
| 342 | { |
| 343 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 344 | struct usb_ehci_pdata *pdata = dev_get_platdata(dev); |
Kuninori Morimoto | 04216be | 2012-08-06 18:08:39 -0700 | [diff] [blame] | 345 | struct platform_device *pdev = |
| 346 | container_of(dev, struct platform_device, dev); |
Alan Stern | c5cf921 | 2012-06-28 11:19:02 -0400 | [diff] [blame] | 347 | bool do_wakeup = device_may_wakeup(dev); |
Kuninori Morimoto | 04216be | 2012-08-06 18:08:39 -0700 | [diff] [blame] | 348 | int ret; |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 349 | |
Kuninori Morimoto | 04216be | 2012-08-06 18:08:39 -0700 | [diff] [blame] | 350 | ret = ehci_suspend(hcd, do_wakeup); |
Vivek Gautam | e155b5b | 2014-04-10 15:58:02 +0530 | [diff] [blame] | 351 | if (ret) |
| 352 | return ret; |
Kuninori Morimoto | 04216be | 2012-08-06 18:08:39 -0700 | [diff] [blame] | 353 | |
| 354 | if (pdata->power_suspend) |
| 355 | pdata->power_suspend(pdev); |
| 356 | |
| 357 | return ret; |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 358 | } |
| 359 | |
| 360 | static int ehci_platform_resume(struct device *dev) |
| 361 | { |
| 362 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 363 | struct usb_ehci_pdata *pdata = dev_get_platdata(dev); |
Kuninori Morimoto | 04216be | 2012-08-06 18:08:39 -0700 | [diff] [blame] | 364 | struct platform_device *pdev = |
| 365 | container_of(dev, struct platform_device, dev); |
Alban Bedel | b4629a7 | 2015-08-04 10:59:17 +0200 | [diff] [blame] | 366 | struct ehci_platform_priv *priv = hcd_to_ehci_priv(hcd); |
Kuninori Morimoto | 04216be | 2012-08-06 18:08:39 -0700 | [diff] [blame] | 367 | |
| 368 | if (pdata->power_on) { |
| 369 | int err = pdata->power_on(pdev); |
| 370 | if (err < 0) |
| 371 | return err; |
| 372 | } |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 373 | |
Alban Bedel | b4629a7 | 2015-08-04 10:59:17 +0200 | [diff] [blame] | 374 | ehci_resume(hcd, priv->reset_on_resume); |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 375 | return 0; |
| 376 | } |
Wonhong Kwon | 5e4ccd9 | 2014-10-24 13:45:47 +0900 | [diff] [blame] | 377 | #endif /* CONFIG_PM_SLEEP */ |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 378 | |
Arnd Bergmann | f3bc64d | 2013-03-27 21:44:22 +0000 | [diff] [blame] | 379 | static const struct of_device_id vt8500_ehci_ids[] = { |
| 380 | { .compatible = "via,vt8500-ehci", }, |
| 381 | { .compatible = "wm,prizm-ehci", }, |
Hans de Goede | 915974c | 2014-02-11 17:35:29 +0100 | [diff] [blame] | 382 | { .compatible = "generic-ehci", }, |
Andreas Herrmann | a95cfa6 | 2015-01-06 13:48:56 +0100 | [diff] [blame] | 383 | { .compatible = "cavium,octeon-6335-ehci", }, |
Arnd Bergmann | f3bc64d | 2013-03-27 21:44:22 +0000 | [diff] [blame] | 384 | {} |
| 385 | }; |
Hans de Goede | a4aeb21 | 2014-02-07 16:36:41 +0100 | [diff] [blame] | 386 | MODULE_DEVICE_TABLE(of, vt8500_ehci_ids); |
Arnd Bergmann | f3bc64d | 2013-03-27 21:44:22 +0000 | [diff] [blame] | 387 | |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 388 | static const struct platform_device_id ehci_platform_table[] = { |
| 389 | { "ehci-platform", 0 }, |
| 390 | { } |
| 391 | }; |
| 392 | MODULE_DEVICE_TABLE(platform, ehci_platform_table); |
| 393 | |
Wonhong Kwon | 5e4ccd9 | 2014-10-24 13:45:47 +0900 | [diff] [blame] | 394 | static SIMPLE_DEV_PM_OPS(ehci_platform_pm_ops, ehci_platform_suspend, |
| 395 | ehci_platform_resume); |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 396 | |
| 397 | static struct platform_driver ehci_platform_driver = { |
| 398 | .id_table = ehci_platform_table, |
| 399 | .probe = ehci_platform_probe, |
Bill Pemberton | 7690417 | 2012-11-19 13:21:08 -0500 | [diff] [blame] | 400 | .remove = ehci_platform_remove, |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 401 | .shutdown = usb_hcd_platform_shutdown, |
| 402 | .driver = { |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 403 | .name = "ehci-platform", |
| 404 | .pm = &ehci_platform_pm_ops, |
Sachin Kamat | ae5e5f7 | 2013-05-21 17:17:16 +0530 | [diff] [blame] | 405 | .of_match_table = vt8500_ehci_ids, |
Hauke Mehrtens | 7a7a4a59 | 2012-03-13 01:04:48 +0100 | [diff] [blame] | 406 | } |
| 407 | }; |
Alan Stern | 99f9193 | 2012-11-01 11:13:08 -0400 | [diff] [blame] | 408 | |
| 409 | static int __init ehci_platform_init(void) |
| 410 | { |
| 411 | if (usb_disabled()) |
| 412 | return -ENODEV; |
| 413 | |
| 414 | pr_info("%s: " DRIVER_DESC "\n", hcd_name); |
| 415 | |
| 416 | ehci_init_driver(&ehci_platform_hc_driver, &platform_overrides); |
| 417 | return platform_driver_register(&ehci_platform_driver); |
| 418 | } |
| 419 | module_init(ehci_platform_init); |
| 420 | |
| 421 | static void __exit ehci_platform_cleanup(void) |
| 422 | { |
| 423 | platform_driver_unregister(&ehci_platform_driver); |
| 424 | } |
| 425 | module_exit(ehci_platform_cleanup); |
| 426 | |
| 427 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 428 | MODULE_AUTHOR("Hauke Mehrtens"); |
| 429 | MODULE_AUTHOR("Alan Stern"); |
| 430 | MODULE_LICENSE("GPL"); |