Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 1 | /* |
| 2 | * xhci-plat.c - xHCI host controller driver platform Bus Glue. |
| 3 | * |
| 4 | * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com |
| 5 | * Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> |
| 6 | * |
| 7 | * A lot of code borrowed from the Linux xHCI driver. |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or |
| 10 | * modify it under the terms of the GNU General Public License |
| 11 | * version 2 as published by the Free Software Foundation. |
| 12 | */ |
| 13 | |
Gregory CLEMENT | 4718c17 | 2014-05-15 12:17:32 +0200 | [diff] [blame] | 14 | #include <linux/clk.h> |
Xenia Ragiadakou | c10cf11 | 2013-08-14 05:55:19 +0300 | [diff] [blame] | 15 | #include <linux/dma-mapping.h> |
Gregory CLEMENT | 48157bb | 2014-05-15 12:17:31 +0200 | [diff] [blame] | 16 | #include <linux/module.h> |
Arnd Bergmann | a9ff911 | 2017-03-13 10:18:44 +0800 | [diff] [blame] | 17 | #include <linux/pci.h> |
Gregory CLEMENT | 48157bb | 2014-05-15 12:17:31 +0200 | [diff] [blame] | 18 | #include <linux/of.h> |
| 19 | #include <linux/platform_device.h> |
Maxime Ripard | 7b8ef22 | 2015-03-17 18:32:22 +0200 | [diff] [blame] | 20 | #include <linux/usb/phy.h> |
Gregory CLEMENT | 48157bb | 2014-05-15 12:17:31 +0200 | [diff] [blame] | 21 | #include <linux/slab.h> |
Duc Dang | 579085b | 2015-10-09 13:30:12 +0300 | [diff] [blame] | 22 | #include <linux/acpi.h> |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 23 | |
| 24 | #include "xhci.h" |
Yoshihiro Shimoda | 4efb2f6 | 2015-11-24 13:09:49 +0200 | [diff] [blame] | 25 | #include "xhci-plat.h" |
Gregory CLEMENT | 9737479 | 2014-05-15 12:17:33 +0200 | [diff] [blame] | 26 | #include "xhci-mvebu.h" |
Yoshihiro Shimoda | 4ac8918 | 2014-07-09 10:08:52 +0900 | [diff] [blame] | 27 | #include "xhci-rcar.h" |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 28 | |
Andrew Bresticker | 1885d9a | 2014-10-03 11:35:26 +0300 | [diff] [blame] | 29 | static struct hc_driver __read_mostly xhci_plat_hc_driver; |
| 30 | |
Roger Quadros | cd33a32 | 2015-05-29 17:01:46 +0300 | [diff] [blame] | 31 | static int xhci_plat_setup(struct usb_hcd *hcd); |
| 32 | static int xhci_plat_start(struct usb_hcd *hcd); |
| 33 | |
| 34 | static const struct xhci_driver_overrides xhci_plat_overrides __initconst = { |
Yoshihiro Shimoda | 4efb2f6 | 2015-11-24 13:09:49 +0200 | [diff] [blame] | 35 | .extra_priv_size = sizeof(struct xhci_plat_priv), |
Roger Quadros | cd33a32 | 2015-05-29 17:01:46 +0300 | [diff] [blame] | 36 | .reset = xhci_plat_setup, |
| 37 | .start = xhci_plat_start, |
| 38 | }; |
| 39 | |
Felipe Balbi | b1c127ae | 2016-04-22 13:17:16 +0300 | [diff] [blame] | 40 | static void xhci_priv_plat_start(struct usb_hcd *hcd) |
| 41 | { |
| 42 | struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd); |
| 43 | |
| 44 | if (priv->plat_start) |
| 45 | priv->plat_start(hcd); |
| 46 | } |
| 47 | |
| 48 | static int xhci_priv_init_quirk(struct usb_hcd *hcd) |
| 49 | { |
| 50 | struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd); |
| 51 | |
| 52 | if (!priv->init_quirk) |
| 53 | return 0; |
| 54 | |
| 55 | return priv->init_quirk(hcd); |
| 56 | } |
| 57 | |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 58 | static void xhci_plat_quirks(struct device *dev, struct xhci_hcd *xhci) |
| 59 | { |
| 60 | /* |
| 61 | * As of now platform drivers don't provide MSI support so we ensure |
| 62 | * here that the generic code does not try to make a pci_dev from our |
| 63 | * dev struct in order to setup MSI |
| 64 | */ |
Sarah Sharp | 52fb612 | 2013-08-08 10:08:34 -0700 | [diff] [blame] | 65 | xhci->quirks |= XHCI_PLAT; |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 66 | } |
| 67 | |
| 68 | /* called during probe() after chip reset completes */ |
| 69 | static int xhci_plat_setup(struct usb_hcd *hcd) |
| 70 | { |
Yoshihiro Shimoda | 4ac8918 | 2014-07-09 10:08:52 +0900 | [diff] [blame] | 71 | int ret; |
| 72 | |
Yoshihiro Shimoda | 4ac8918 | 2014-07-09 10:08:52 +0900 | [diff] [blame] | 73 | |
Felipe Balbi | b1c127ae | 2016-04-22 13:17:16 +0300 | [diff] [blame] | 74 | ret = xhci_priv_init_quirk(hcd); |
| 75 | if (ret) |
| 76 | return ret; |
Felipe Balbi | 3bdb263 | 2016-04-22 13:17:14 +0300 | [diff] [blame] | 77 | |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 78 | return xhci_gen_setup(hcd, xhci_plat_quirks); |
| 79 | } |
| 80 | |
Yoshihiro Shimoda | 94adcdc | 2014-05-28 20:22:58 +0900 | [diff] [blame] | 81 | static int xhci_plat_start(struct usb_hcd *hcd) |
| 82 | { |
Felipe Balbi | b1c127ae | 2016-04-22 13:17:16 +0300 | [diff] [blame] | 83 | xhci_priv_plat_start(hcd); |
Yoshihiro Shimoda | 94adcdc | 2014-05-28 20:22:58 +0900 | [diff] [blame] | 84 | return xhci_run(hcd); |
| 85 | } |
| 86 | |
Yoshihiro Shimoda | 4efb2f6 | 2015-11-24 13:09:49 +0200 | [diff] [blame] | 87 | #ifdef CONFIG_OF |
| 88 | static const struct xhci_plat_priv xhci_plat_marvell_armada = { |
Felipe Balbi | b1c127ae | 2016-04-22 13:17:16 +0300 | [diff] [blame] | 89 | .init_quirk = xhci_mvebu_mbus_init_quirk, |
Yoshihiro Shimoda | 4efb2f6 | 2015-11-24 13:09:49 +0200 | [diff] [blame] | 90 | }; |
| 91 | |
| 92 | static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen2 = { |
Yoshihiro Shimoda | 9bf9d9d | 2015-11-24 13:09:51 +0200 | [diff] [blame] | 93 | .firmware_name = XHCI_RCAR_FIRMWARE_NAME_V1, |
Felipe Balbi | b1c127ae | 2016-04-22 13:17:16 +0300 | [diff] [blame] | 94 | .init_quirk = xhci_rcar_init_quirk, |
| 95 | .plat_start = xhci_rcar_start, |
Yoshihiro Shimoda | 4efb2f6 | 2015-11-24 13:09:49 +0200 | [diff] [blame] | 96 | }; |
| 97 | |
Yoshihiro Shimoda | 526a240 | 2015-11-24 13:09:53 +0200 | [diff] [blame] | 98 | static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen3 = { |
Yoshihiro Shimoda | 526a240 | 2015-11-24 13:09:53 +0200 | [diff] [blame] | 99 | .firmware_name = XHCI_RCAR_FIRMWARE_NAME_V2, |
Felipe Balbi | b1c127ae | 2016-04-22 13:17:16 +0300 | [diff] [blame] | 100 | .init_quirk = xhci_rcar_init_quirk, |
| 101 | .plat_start = xhci_rcar_start, |
Yoshihiro Shimoda | 526a240 | 2015-11-24 13:09:53 +0200 | [diff] [blame] | 102 | }; |
| 103 | |
Yoshihiro Shimoda | 4efb2f6 | 2015-11-24 13:09:49 +0200 | [diff] [blame] | 104 | static const struct of_device_id usb_xhci_of_match[] = { |
| 105 | { |
| 106 | .compatible = "generic-xhci", |
| 107 | }, { |
| 108 | .compatible = "xhci-platform", |
| 109 | }, { |
| 110 | .compatible = "marvell,armada-375-xhci", |
| 111 | .data = &xhci_plat_marvell_armada, |
| 112 | }, { |
| 113 | .compatible = "marvell,armada-380-xhci", |
| 114 | .data = &xhci_plat_marvell_armada, |
| 115 | }, { |
| 116 | .compatible = "renesas,xhci-r8a7790", |
| 117 | .data = &xhci_plat_renesas_rcar_gen2, |
| 118 | }, { |
| 119 | .compatible = "renesas,xhci-r8a7791", |
| 120 | .data = &xhci_plat_renesas_rcar_gen2, |
| 121 | }, { |
Yoshihiro Shimoda | 82487b7 | 2015-11-24 13:09:52 +0200 | [diff] [blame] | 122 | .compatible = "renesas,xhci-r8a7793", |
| 123 | .data = &xhci_plat_renesas_rcar_gen2, |
| 124 | }, { |
Yoshihiro Shimoda | 526a240 | 2015-11-24 13:09:53 +0200 | [diff] [blame] | 125 | .compatible = "renesas,xhci-r8a7795", |
| 126 | .data = &xhci_plat_renesas_rcar_gen3, |
| 127 | }, { |
Simon Horman | f1bbdc3 | 2016-02-18 17:55:49 +0200 | [diff] [blame] | 128 | .compatible = "renesas,rcar-gen2-xhci", |
| 129 | .data = &xhci_plat_renesas_rcar_gen2, |
| 130 | }, { |
| 131 | .compatible = "renesas,rcar-gen3-xhci", |
| 132 | .data = &xhci_plat_renesas_rcar_gen3, |
Yoshihiro Shimoda | 4efb2f6 | 2015-11-24 13:09:49 +0200 | [diff] [blame] | 133 | }, |
Julia Lawall | ff075d67 | 2016-02-18 17:55:50 +0200 | [diff] [blame] | 134 | {}, |
Yoshihiro Shimoda | 4efb2f6 | 2015-11-24 13:09:49 +0200 | [diff] [blame] | 135 | }; |
| 136 | MODULE_DEVICE_TABLE(of, usb_xhci_of_match); |
| 137 | #endif |
| 138 | |
Devdutt Patnaik | cf1d53c | 2015-05-04 22:02:36 -0700 | [diff] [blame] | 139 | static ssize_t config_imod_store(struct device *pdev, |
| 140 | struct device_attribute *attr, const char *buff, size_t size) |
| 141 | { |
| 142 | struct usb_hcd *hcd = dev_get_drvdata(pdev); |
| 143 | struct xhci_hcd *xhci; |
| 144 | u32 temp; |
| 145 | u32 imod; |
| 146 | unsigned long flags; |
| 147 | |
| 148 | if (kstrtouint(buff, 10, &imod) != 1) |
| 149 | return 0; |
| 150 | |
| 151 | imod &= ER_IRQ_INTERVAL_MASK; |
| 152 | xhci = hcd_to_xhci(hcd); |
| 153 | |
| 154 | if (xhci->shared_hcd->state == HC_STATE_SUSPENDED |
| 155 | && hcd->state == HC_STATE_SUSPENDED) |
| 156 | return -EACCES; |
| 157 | |
| 158 | spin_lock_irqsave(&xhci->lock, flags); |
| 159 | temp = readl_relaxed(&xhci->ir_set->irq_control); |
| 160 | temp &= ~ER_IRQ_INTERVAL_MASK; |
| 161 | temp |= imod; |
| 162 | writel_relaxed(temp, &xhci->ir_set->irq_control); |
| 163 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 164 | |
| 165 | return size; |
| 166 | } |
| 167 | |
| 168 | static ssize_t config_imod_show(struct device *pdev, |
| 169 | struct device_attribute *attr, char *buff) |
| 170 | { |
| 171 | struct usb_hcd *hcd = dev_get_drvdata(pdev); |
| 172 | struct xhci_hcd *xhci; |
| 173 | u32 temp; |
| 174 | unsigned long flags; |
| 175 | |
| 176 | xhci = hcd_to_xhci(hcd); |
| 177 | |
| 178 | if (xhci->shared_hcd->state == HC_STATE_SUSPENDED |
| 179 | && hcd->state == HC_STATE_SUSPENDED) |
| 180 | return -EACCES; |
| 181 | |
| 182 | spin_lock_irqsave(&xhci->lock, flags); |
| 183 | temp = readl_relaxed(&xhci->ir_set->irq_control) & |
| 184 | ER_IRQ_INTERVAL_MASK; |
| 185 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 186 | |
| 187 | return snprintf(buff, PAGE_SIZE, "%08u\n", temp); |
| 188 | } |
| 189 | |
| 190 | static DEVICE_ATTR(config_imod, 0644, config_imod_show, config_imod_store); |
| 191 | |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 192 | static int xhci_plat_probe(struct platform_device *pdev) |
| 193 | { |
Yoshihiro Shimoda | 4efb2f6 | 2015-11-24 13:09:49 +0200 | [diff] [blame] | 194 | const struct of_device_id *match; |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 195 | const struct hc_driver *driver; |
Arnd Bergmann | a9ff911 | 2017-03-13 10:18:44 +0800 | [diff] [blame] | 196 | struct device *sysdev; |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 197 | struct xhci_hcd *xhci; |
| 198 | struct resource *res; |
| 199 | struct usb_hcd *hcd; |
Gregory CLEMENT | 4718c17 | 2014-05-15 12:17:32 +0200 | [diff] [blame] | 200 | struct clk *clk; |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 201 | int ret; |
| 202 | int irq; |
Mayank Rana | 8728345 | 2017-03-29 18:33:39 -0700 | [diff] [blame] | 203 | u32 temp, imod; |
| 204 | unsigned long flags; |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 205 | |
| 206 | if (usb_disabled()) |
| 207 | return -ENODEV; |
| 208 | |
Andrew Bresticker | 1885d9a | 2014-10-03 11:35:26 +0300 | [diff] [blame] | 209 | driver = &xhci_plat_hc_driver; |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 210 | |
| 211 | irq = platform_get_irq(pdev, 0); |
| 212 | if (irq < 0) |
Thomas Petazzoni | 1a92691 | 2017-05-17 18:32:06 +0300 | [diff] [blame] | 213 | return irq; |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 214 | |
Arnd Bergmann | a9ff911 | 2017-03-13 10:18:44 +0800 | [diff] [blame] | 215 | /* |
| 216 | * sysdev must point to a device that is known to the system firmware |
| 217 | * or PCI hardware. We handle these three cases here: |
| 218 | * 1. xhci_plat comes from firmware |
| 219 | * 2. xhci_plat is child of a device from firmware (dwc3-plat) |
| 220 | * 3. xhci_plat is grandchild of a pci device (dwc3-pci) |
| 221 | */ |
| 222 | sysdev = &pdev->dev; |
Mayank Rana | 04d4368 | 2017-09-01 13:46:19 -0700 | [diff] [blame] | 223 | /* |
| 224 | * If sysdev->parent->parent is available and part of IOMMU group |
| 225 | * (indicating possible usage of SMMU enablement), then use |
| 226 | * sysdev->parent->parent as sysdev. |
| 227 | */ |
| 228 | if (sysdev->parent && !sysdev->of_node && sysdev->parent->of_node && |
| 229 | sysdev->parent->parent && sysdev->parent->parent->iommu_group) |
| 230 | sysdev = sysdev->parent->parent; |
| 231 | else if (sysdev->parent && !sysdev->of_node && sysdev->parent->of_node) |
Arnd Bergmann | a9ff911 | 2017-03-13 10:18:44 +0800 | [diff] [blame] | 232 | sysdev = sysdev->parent; |
| 233 | #ifdef CONFIG_PCI |
| 234 | else if (sysdev->parent && sysdev->parent->parent && |
| 235 | sysdev->parent->parent->bus == &pci_bus_type) |
| 236 | sysdev = sysdev->parent->parent; |
| 237 | #endif |
| 238 | |
Duc Dang | 0ebbe39 | 2015-10-09 13:30:11 +0300 | [diff] [blame] | 239 | /* Try to set 64-bit DMA first */ |
Arnd Bergmann | a9ff911 | 2017-03-13 10:18:44 +0800 | [diff] [blame] | 240 | if (WARN_ON(!sysdev->dma_mask)) |
Duc Dang | 0ebbe39 | 2015-10-09 13:30:11 +0300 | [diff] [blame] | 241 | /* Platform did not initialize dma_mask */ |
Arnd Bergmann | a9ff911 | 2017-03-13 10:18:44 +0800 | [diff] [blame] | 242 | ret = dma_coerce_mask_and_coherent(sysdev, |
Duc Dang | 0ebbe39 | 2015-10-09 13:30:11 +0300 | [diff] [blame] | 243 | DMA_BIT_MASK(64)); |
Xenia Ragiadakou | c10cf11 | 2013-08-14 05:55:19 +0300 | [diff] [blame] | 244 | else |
Arnd Bergmann | a9ff911 | 2017-03-13 10:18:44 +0800 | [diff] [blame] | 245 | ret = dma_set_mask_and_coherent(sysdev, DMA_BIT_MASK(64)); |
Duc Dang | 0ebbe39 | 2015-10-09 13:30:11 +0300 | [diff] [blame] | 246 | |
| 247 | /* If seting 64-bit DMA mask fails, fall back to 32-bit DMA mask */ |
| 248 | if (ret) { |
Arnd Bergmann | a9ff911 | 2017-03-13 10:18:44 +0800 | [diff] [blame] | 249 | ret = dma_set_mask_and_coherent(sysdev, DMA_BIT_MASK(32)); |
Duc Dang | 0ebbe39 | 2015-10-09 13:30:11 +0300 | [diff] [blame] | 250 | if (ret) |
| 251 | return ret; |
| 252 | } |
Xenia Ragiadakou | c10cf11 | 2013-08-14 05:55:19 +0300 | [diff] [blame] | 253 | |
Arnd Bergmann | a9ff911 | 2017-03-13 10:18:44 +0800 | [diff] [blame] | 254 | hcd = __usb_create_hcd(driver, sysdev, &pdev->dev, |
| 255 | dev_name(&pdev->dev), NULL); |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 256 | if (!hcd) |
| 257 | return -ENOMEM; |
| 258 | |
Hemant Kumar | 0641f22 | 2016-11-15 19:10:42 -0800 | [diff] [blame] | 259 | hcd_to_bus(hcd)->skip_resume = true; |
| 260 | |
Varka Bhadram | e7020f1 | 2014-11-04 07:51:27 +0530 | [diff] [blame] | 261 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
Himangi Saraogi | fd66634 | 2014-06-20 23:11:23 +0530 | [diff] [blame] | 262 | hcd->regs = devm_ioremap_resource(&pdev->dev, res); |
| 263 | if (IS_ERR(hcd->regs)) { |
| 264 | ret = PTR_ERR(hcd->regs); |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 265 | goto put_hcd; |
| 266 | } |
| 267 | |
Varka Bhadram | e7020f1 | 2014-11-04 07:51:27 +0530 | [diff] [blame] | 268 | hcd->rsrc_start = res->start; |
| 269 | hcd->rsrc_len = resource_size(res); |
| 270 | |
Gregory CLEMENT | 4718c17 | 2014-05-15 12:17:32 +0200 | [diff] [blame] | 271 | /* |
| 272 | * Not all platforms have a clk so it is not an error if the |
| 273 | * clock does not exists. |
| 274 | */ |
| 275 | clk = devm_clk_get(&pdev->dev, NULL); |
| 276 | if (!IS_ERR(clk)) { |
| 277 | ret = clk_prepare_enable(clk); |
| 278 | if (ret) |
Himangi Saraogi | fd66634 | 2014-06-20 23:11:23 +0530 | [diff] [blame] | 279 | goto put_hcd; |
Thomas Petazzoni | de95c40 | 2016-06-01 18:09:09 +0300 | [diff] [blame] | 280 | } else if (PTR_ERR(clk) == -EPROBE_DEFER) { |
| 281 | ret = -EPROBE_DEFER; |
| 282 | goto put_hcd; |
Gregory CLEMENT | 4718c17 | 2014-05-15 12:17:32 +0200 | [diff] [blame] | 283 | } |
| 284 | |
Mayank Rana | a99689a | 2016-08-10 17:39:47 -0700 | [diff] [blame] | 285 | if (pdev->dev.parent) |
| 286 | pm_runtime_resume(pdev->dev.parent); |
| 287 | |
| 288 | pm_runtime_use_autosuspend(&pdev->dev); |
| 289 | pm_runtime_set_autosuspend_delay(&pdev->dev, 1000); |
| 290 | pm_runtime_set_active(&pdev->dev); |
| 291 | pm_runtime_enable(&pdev->dev); |
| 292 | pm_runtime_get_sync(&pdev->dev); |
| 293 | |
Yoshihiro Shimoda | 4efb2f6 | 2015-11-24 13:09:49 +0200 | [diff] [blame] | 294 | xhci = hcd_to_xhci(hcd); |
Heikki Krogerus | 76f9502 | 2016-06-21 10:58:08 +0300 | [diff] [blame] | 295 | match = of_match_node(usb_xhci_of_match, pdev->dev.of_node); |
Yoshihiro Shimoda | 4efb2f6 | 2015-11-24 13:09:49 +0200 | [diff] [blame] | 296 | if (match) { |
| 297 | const struct xhci_plat_priv *priv_match = match->data; |
| 298 | struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd); |
| 299 | |
| 300 | /* Just copy data for now */ |
Gregory CLEMENT | 2ad294d | 2016-01-26 17:50:11 +0200 | [diff] [blame] | 301 | if (priv_match) |
| 302 | *priv = *priv_match; |
Yoshihiro Shimoda | 4efb2f6 | 2015-11-24 13:09:49 +0200 | [diff] [blame] | 303 | } |
| 304 | |
Peter Chen | 3c9740a | 2013-11-05 10:46:02 +0800 | [diff] [blame] | 305 | device_wakeup_enable(hcd->self.controller); |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 306 | |
Gregory CLEMENT | 4718c17 | 2014-05-15 12:17:32 +0200 | [diff] [blame] | 307 | xhci->clk = clk; |
Roger Quadros | 9fa733f | 2015-05-29 17:01:50 +0300 | [diff] [blame] | 308 | xhci->main_hcd = hcd; |
Arnd Bergmann | a9ff911 | 2017-03-13 10:18:44 +0800 | [diff] [blame] | 309 | xhci->shared_hcd = __usb_create_hcd(driver, sysdev, &pdev->dev, |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 310 | dev_name(&pdev->dev), hcd); |
| 311 | if (!xhci->shared_hcd) { |
| 312 | ret = -ENOMEM; |
Roger Quadros | 4ac5308 | 2015-05-29 17:01:47 +0300 | [diff] [blame] | 313 | goto disable_clk; |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 314 | } |
| 315 | |
Hemant Kumar | 0641f22 | 2016-11-15 19:10:42 -0800 | [diff] [blame] | 316 | hcd_to_bus(xhci->shared_hcd)->skip_resume = true; |
| 317 | |
Mayank Rana | d89f1fe | 2017-09-28 14:04:07 -0700 | [diff] [blame] | 318 | if (device_property_read_bool(&pdev->dev, "usb3-lpm-capable")) |
Pratyush Anand | 20f6fdd | 2014-07-04 17:01:25 +0300 | [diff] [blame] | 319 | xhci->quirks |= XHCI_LPM_SUPPORT; |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 320 | |
Felipe Balbi | 7bdf7be | 2017-04-04 19:32:24 +0000 | [diff] [blame] | 321 | if (device_property_read_bool(&pdev->dev, "quirk-broken-port-ped")) |
| 322 | xhci->quirks |= XHCI_BROKEN_PORT_PED; |
| 323 | |
Mayank Rana | e27420f | 2017-10-10 15:44:19 -0700 | [diff] [blame] | 324 | if (device_property_read_u32(&pdev->dev, "xhci-imod-value", &imod)) |
Mayank Rana | 8728345 | 2017-03-29 18:33:39 -0700 | [diff] [blame] | 325 | imod = 0; |
| 326 | |
Mayank Rana | 78dc763 | 2017-12-01 11:52:27 -0800 | [diff] [blame] | 327 | if (device_property_read_u32(&pdev->dev, "usb-core-id", &xhci->core_id)) |
Hemant Kumar | e7113fb | 2017-08-18 16:40:58 -0700 | [diff] [blame] | 328 | xhci->core_id = -EINVAL; |
| 329 | |
Arnd Bergmann | a9ff911 | 2017-03-13 10:18:44 +0800 | [diff] [blame] | 330 | hcd->usb_phy = devm_usb_get_phy_by_phandle(sysdev, "usb-phy", 0); |
Maxime Ripard | 7b8ef22 | 2015-03-17 18:32:22 +0200 | [diff] [blame] | 331 | if (IS_ERR(hcd->usb_phy)) { |
| 332 | ret = PTR_ERR(hcd->usb_phy); |
| 333 | if (ret == -EPROBE_DEFER) |
| 334 | goto put_usb3_hcd; |
| 335 | hcd->usb_phy = NULL; |
| 336 | } else { |
| 337 | ret = usb_phy_init(hcd->usb_phy); |
| 338 | if (ret) |
| 339 | goto put_usb3_hcd; |
| 340 | } |
| 341 | |
Mayank Rana | f616a7f | 2017-03-20 16:10:39 -0700 | [diff] [blame] | 342 | ret = usb_add_hcd(hcd, irq, IRQF_SHARED); |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 343 | if (ret) |
Maxime Ripard | 7b8ef22 | 2015-03-17 18:32:22 +0200 | [diff] [blame] | 344 | goto disable_usb_phy; |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 345 | |
Jack Pham | 629f6cd | 2016-10-26 19:36:55 -0700 | [diff] [blame] | 346 | device_wakeup_enable(&hcd->self.root_hub->dev); |
| 347 | |
William wu | 82bd560 | 2017-01-17 15:32:07 +0800 | [diff] [blame] | 348 | if (HCC_MAX_PSA(xhci->hcc_params) >= 4) |
| 349 | xhci->shared_hcd->can_do_streams = 1; |
| 350 | |
Mayank Rana | f616a7f | 2017-03-20 16:10:39 -0700 | [diff] [blame] | 351 | ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED); |
Roger Quadros | 4ac5308 | 2015-05-29 17:01:47 +0300 | [diff] [blame] | 352 | if (ret) |
| 353 | goto dealloc_usb2_hcd; |
| 354 | |
Jack Pham | 629f6cd | 2016-10-26 19:36:55 -0700 | [diff] [blame] | 355 | device_wakeup_enable(&xhci->shared_hcd->self.root_hub->dev); |
| 356 | |
Mayank Rana | 8728345 | 2017-03-29 18:33:39 -0700 | [diff] [blame] | 357 | /* override imod interval if specified */ |
| 358 | if (imod) { |
| 359 | imod &= ER_IRQ_INTERVAL_MASK; |
| 360 | spin_lock_irqsave(&xhci->lock, flags); |
| 361 | temp = readl_relaxed(&xhci->ir_set->irq_control); |
| 362 | temp &= ~ER_IRQ_INTERVAL_MASK; |
| 363 | temp |= imod; |
| 364 | writel_relaxed(temp, &xhci->ir_set->irq_control); |
| 365 | spin_unlock_irqrestore(&xhci->lock, flags); |
| 366 | dev_dbg(&pdev->dev, "%s: imod set to %u\n", __func__, imod); |
| 367 | } |
| 368 | |
Devdutt Patnaik | cf1d53c | 2015-05-04 22:02:36 -0700 | [diff] [blame] | 369 | ret = device_create_file(&pdev->dev, &dev_attr_config_imod); |
| 370 | if (ret) |
| 371 | dev_err(&pdev->dev, "%s: unable to create imod sysfs entry\n", |
| 372 | __func__); |
| 373 | |
Mayank Rana | a99689a | 2016-08-10 17:39:47 -0700 | [diff] [blame] | 374 | pm_runtime_mark_last_busy(&pdev->dev); |
| 375 | pm_runtime_put_autosuspend(&pdev->dev); |
| 376 | |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 377 | return 0; |
| 378 | |
Roger Quadros | 4ac5308 | 2015-05-29 17:01:47 +0300 | [diff] [blame] | 379 | |
| 380 | dealloc_usb2_hcd: |
| 381 | usb_remove_hcd(hcd); |
| 382 | |
Maxime Ripard | 7b8ef22 | 2015-03-17 18:32:22 +0200 | [diff] [blame] | 383 | disable_usb_phy: |
| 384 | usb_phy_shutdown(hcd->usb_phy); |
| 385 | |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 386 | put_usb3_hcd: |
| 387 | usb_put_hcd(xhci->shared_hcd); |
| 388 | |
Gregory CLEMENT | 4718c17 | 2014-05-15 12:17:32 +0200 | [diff] [blame] | 389 | disable_clk: |
| 390 | if (!IS_ERR(clk)) |
| 391 | clk_disable_unprepare(clk); |
| 392 | |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 393 | put_hcd: |
| 394 | usb_put_hcd(hcd); |
| 395 | |
| 396 | return ret; |
| 397 | } |
| 398 | |
| 399 | static int xhci_plat_remove(struct platform_device *dev) |
| 400 | { |
| 401 | struct usb_hcd *hcd = platform_get_drvdata(dev); |
| 402 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); |
Gregory CLEMENT | 4718c17 | 2014-05-15 12:17:32 +0200 | [diff] [blame] | 403 | struct clk *clk = xhci->clk; |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 404 | |
Mayank Rana | a99689a | 2016-08-10 17:39:47 -0700 | [diff] [blame] | 405 | pm_runtime_disable(&dev->dev); |
Guenter Roeck | 24db1c5 | 2017-03-09 15:39:37 +0200 | [diff] [blame] | 406 | xhci->xhc_state |= XHCI_STATE_REMOVING; |
Mayank Rana | a99689a | 2016-08-10 17:39:47 -0700 | [diff] [blame] | 407 | |
Devdutt Patnaik | cf1d53c | 2015-05-04 22:02:36 -0700 | [diff] [blame] | 408 | device_remove_file(&dev->dev, &dev_attr_config_imod); |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 409 | usb_remove_hcd(xhci->shared_hcd); |
Maxime Ripard | 7b8ef22 | 2015-03-17 18:32:22 +0200 | [diff] [blame] | 410 | usb_phy_shutdown(hcd->usb_phy); |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 411 | |
| 412 | usb_remove_hcd(hcd); |
Roger Quadros | 4ac5308 | 2015-05-29 17:01:47 +0300 | [diff] [blame] | 413 | usb_put_hcd(xhci->shared_hcd); |
| 414 | |
Gregory CLEMENT | 4718c17 | 2014-05-15 12:17:32 +0200 | [diff] [blame] | 415 | if (!IS_ERR(clk)) |
| 416 | clk_disable_unprepare(clk); |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 417 | usb_put_hcd(hcd); |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 418 | |
| 419 | return 0; |
| 420 | } |
| 421 | |
Mayank Rana | a99689a | 2016-08-10 17:39:47 -0700 | [diff] [blame] | 422 | #ifdef CONFIG_PM |
| 423 | static int xhci_plat_runtime_idle(struct device *dev) |
Vikas Sajjan | 57d04eb | 2013-02-11 12:58:00 +0200 | [diff] [blame] | 424 | { |
Lu Baolu | a1377e5 | 2014-11-18 11:27:14 +0200 | [diff] [blame] | 425 | /* |
Mayank Rana | a99689a | 2016-08-10 17:39:47 -0700 | [diff] [blame] | 426 | * When pm_runtime_put_autosuspend() is called on this device, |
| 427 | * after this idle callback returns the PM core will schedule the |
| 428 | * autosuspend if there is any remaining time until expiry. However, |
| 429 | * when reaching this point because the child_count becomes 0, the |
| 430 | * core does not honor autosuspend in that case and results in |
| 431 | * idle/suspend happening immediately. In order to have a delay |
| 432 | * before suspend we have to call pm_runtime_autosuspend() manually. |
Lu Baolu | a1377e5 | 2014-11-18 11:27:14 +0200 | [diff] [blame] | 433 | */ |
Mayank Rana | a99689a | 2016-08-10 17:39:47 -0700 | [diff] [blame] | 434 | pm_runtime_mark_last_busy(dev); |
| 435 | pm_runtime_autosuspend(dev); |
| 436 | return -EBUSY; |
Vikas Sajjan | 57d04eb | 2013-02-11 12:58:00 +0200 | [diff] [blame] | 437 | } |
| 438 | |
Mayank Rana | a99689a | 2016-08-10 17:39:47 -0700 | [diff] [blame] | 439 | static int xhci_plat_runtime_suspend(struct device *dev) |
Vikas Sajjan | 57d04eb | 2013-02-11 12:58:00 +0200 | [diff] [blame] | 440 | { |
Mayank Rana | a99689a | 2016-08-10 17:39:47 -0700 | [diff] [blame] | 441 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
| 442 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); |
Vikas Sajjan | 57d04eb | 2013-02-11 12:58:00 +0200 | [diff] [blame] | 443 | |
Mayank Rana | a99689a | 2016-08-10 17:39:47 -0700 | [diff] [blame] | 444 | if (!xhci) |
| 445 | return 0; |
| 446 | |
| 447 | dev_dbg(dev, "xhci-plat runtime suspend\n"); |
| 448 | |
Jack Pham | 3b4ebc1 | 2017-04-17 12:09:58 -0700 | [diff] [blame] | 449 | return xhci_suspend(xhci, true); |
Mayank Rana | a99689a | 2016-08-10 17:39:47 -0700 | [diff] [blame] | 450 | } |
| 451 | |
| 452 | static int xhci_plat_runtime_resume(struct device *dev) |
| 453 | { |
| 454 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
| 455 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); |
| 456 | int ret; |
| 457 | |
| 458 | if (!xhci) |
| 459 | return 0; |
| 460 | |
| 461 | dev_dbg(dev, "xhci-plat runtime resume\n"); |
| 462 | |
Jack Pham | 3b4ebc1 | 2017-04-17 12:09:58 -0700 | [diff] [blame] | 463 | ret = xhci_resume(xhci, false); |
Mayank Rana | a99689a | 2016-08-10 17:39:47 -0700 | [diff] [blame] | 464 | pm_runtime_mark_last_busy(dev); |
| 465 | |
| 466 | return ret; |
Vikas Sajjan | 57d04eb | 2013-02-11 12:58:00 +0200 | [diff] [blame] | 467 | } |
| 468 | |
| 469 | static const struct dev_pm_ops xhci_plat_pm_ops = { |
Mayank Rana | a99689a | 2016-08-10 17:39:47 -0700 | [diff] [blame] | 470 | SET_SYSTEM_SLEEP_PM_OPS(NULL, NULL) |
| 471 | SET_RUNTIME_PM_OPS(xhci_plat_runtime_suspend, xhci_plat_runtime_resume, |
| 472 | xhci_plat_runtime_idle) |
Vikas Sajjan | 57d04eb | 2013-02-11 12:58:00 +0200 | [diff] [blame] | 473 | }; |
| 474 | #define DEV_PM_OPS (&xhci_plat_pm_ops) |
| 475 | #else |
| 476 | #define DEV_PM_OPS NULL |
| 477 | #endif /* CONFIG_PM */ |
| 478 | |
Duc Dang | 579085b | 2015-10-09 13:30:12 +0300 | [diff] [blame] | 479 | static const struct acpi_device_id usb_xhci_acpi_match[] = { |
| 480 | /* XHCI-compliant USB Controller */ |
| 481 | { "PNP0D10", }, |
| 482 | { } |
| 483 | }; |
| 484 | MODULE_DEVICE_TABLE(acpi, usb_xhci_acpi_match); |
| 485 | |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 486 | static struct platform_driver usb_xhci_driver = { |
| 487 | .probe = xhci_plat_probe, |
| 488 | .remove = xhci_plat_remove, |
| 489 | .driver = { |
| 490 | .name = "xhci-hcd", |
Vikas Sajjan | 57d04eb | 2013-02-11 12:58:00 +0200 | [diff] [blame] | 491 | .pm = DEV_PM_OPS, |
Al Cooper | 1fe6c45 | 2013-07-25 19:04:44 -0400 | [diff] [blame] | 492 | .of_match_table = of_match_ptr(usb_xhci_of_match), |
Duc Dang | 579085b | 2015-10-09 13:30:12 +0300 | [diff] [blame] | 493 | .acpi_match_table = ACPI_PTR(usb_xhci_acpi_match), |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 494 | }, |
| 495 | }; |
| 496 | MODULE_ALIAS("platform:xhci-hcd"); |
| 497 | |
Andrew Bresticker | 29e409f | 2014-10-03 11:35:29 +0300 | [diff] [blame] | 498 | static int __init xhci_plat_init(void) |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 499 | { |
Roger Quadros | cd33a32 | 2015-05-29 17:01:46 +0300 | [diff] [blame] | 500 | xhci_init_driver(&xhci_plat_hc_driver, &xhci_plat_overrides); |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 501 | return platform_driver_register(&usb_xhci_driver); |
| 502 | } |
Andrew Bresticker | 29e409f | 2014-10-03 11:35:29 +0300 | [diff] [blame] | 503 | module_init(xhci_plat_init); |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 504 | |
Andrew Bresticker | 29e409f | 2014-10-03 11:35:29 +0300 | [diff] [blame] | 505 | static void __exit xhci_plat_exit(void) |
Sebastian Andrzej Siewior | 3429e91 | 2012-03-13 16:57:41 +0200 | [diff] [blame] | 506 | { |
| 507 | platform_driver_unregister(&usb_xhci_driver); |
| 508 | } |
Andrew Bresticker | 29e409f | 2014-10-03 11:35:29 +0300 | [diff] [blame] | 509 | module_exit(xhci_plat_exit); |
| 510 | |
| 511 | MODULE_DESCRIPTION("xHCI Platform Host Controller Driver"); |
| 512 | MODULE_LICENSE("GPL"); |