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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
14#include <linux/clk.h>
15#include <linux/dma-mapping.h>
16#include <linux/module.h>
17#include <linux/of.h>
18#include <linux/platform_device.h>
19#include <linux/usb/phy.h>
20#include <linux/slab.h>
21#include <linux/usb/xhci_pdriver.h>
22#include <linux/acpi.h>
23
24#include "xhci.h"
25#include "xhci-plat.h"
26#include "xhci-mvebu.h"
27#include "xhci-rcar.h"
28
29static struct hc_driver __read_mostly xhci_plat_hc_driver;
30
31static int xhci_plat_setup(struct usb_hcd *hcd);
32static int xhci_plat_start(struct usb_hcd *hcd);
33
34static const struct xhci_driver_overrides xhci_plat_overrides __initconst = {
35 .extra_priv_size = sizeof(struct xhci_plat_priv),
36 .reset = xhci_plat_setup,
37 .start = xhci_plat_start,
38};
39
40static void xhci_plat_quirks(struct device *dev, struct xhci_hcd *xhci)
41{
42 struct usb_hcd *hcd = xhci_to_hcd(xhci);
43
44 /*
45 * As of now platform drivers don't provide MSI support so we ensure
46 * here that the generic code does not try to make a pci_dev from our
47 * dev struct in order to setup MSI
48 */
49 xhci->quirks |= XHCI_PLAT;
50
51 /*
52 * On R-Car Gen2 and Gen3, the AC64 bit (bit 0) of HCCPARAMS1 is set
53 * to 1. However, these SoCs don't support 64-bit address memory
54 * pointers. So, this driver clears the AC64 bit of xhci->hcc_params
55 * to call dma_set_coherent_mask(dev, DMA_BIT_MASK(32)) in
56 * xhci_gen_setup().
57 */
58 if (xhci_plat_type_is(hcd, XHCI_PLAT_TYPE_RENESAS_RCAR_GEN2) ||
59 xhci_plat_type_is(hcd, XHCI_PLAT_TYPE_RENESAS_RCAR_GEN3))
60 xhci->quirks |= XHCI_NO_64BIT_SUPPORT;
61}
62
63/* called during probe() after chip reset completes */
64static int xhci_plat_setup(struct usb_hcd *hcd)
65{
66 int ret;
67
68 if (xhci_plat_type_is(hcd, XHCI_PLAT_TYPE_RENESAS_RCAR_GEN2) ||
69 xhci_plat_type_is(hcd, XHCI_PLAT_TYPE_RENESAS_RCAR_GEN3)) {
70 ret = xhci_rcar_init_quirk(hcd);
71 if (ret)
72 return ret;
73 }
74
75 return xhci_gen_setup(hcd, xhci_plat_quirks);
76}
77
78static int xhci_plat_start(struct usb_hcd *hcd)
79{
80 if (xhci_plat_type_is(hcd, XHCI_PLAT_TYPE_RENESAS_RCAR_GEN2) ||
81 xhci_plat_type_is(hcd, XHCI_PLAT_TYPE_RENESAS_RCAR_GEN3))
82 xhci_rcar_start(hcd);
83
84 return xhci_run(hcd);
85}
86
87#ifdef CONFIG_OF
88static const struct xhci_plat_priv xhci_plat_marvell_armada = {
89 .type = XHCI_PLAT_TYPE_MARVELL_ARMADA,
90};
91
92static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen2 = {
93 .type = XHCI_PLAT_TYPE_RENESAS_RCAR_GEN2,
94 .firmware_name = XHCI_RCAR_FIRMWARE_NAME_V1,
95};
96
97static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen3 = {
98 .type = XHCI_PLAT_TYPE_RENESAS_RCAR_GEN3,
99 .firmware_name = XHCI_RCAR_FIRMWARE_NAME_V2,
100};
101
102static const struct of_device_id usb_xhci_of_match[] = {
103 {
104 .compatible = "generic-xhci",
105 }, {
106 .compatible = "xhci-platform",
107 }, {
108 .compatible = "marvell,armada-375-xhci",
109 .data = &xhci_plat_marvell_armada,
110 }, {
111 .compatible = "marvell,armada-380-xhci",
112 .data = &xhci_plat_marvell_armada,
113 }, {
114 .compatible = "renesas,xhci-r8a7790",
115 .data = &xhci_plat_renesas_rcar_gen2,
116 }, {
117 .compatible = "renesas,xhci-r8a7791",
118 .data = &xhci_plat_renesas_rcar_gen2,
119 }, {
120 .compatible = "renesas,xhci-r8a7793",
121 .data = &xhci_plat_renesas_rcar_gen2,
122 }, {
123 .compatible = "renesas,xhci-r8a7795",
124 .data = &xhci_plat_renesas_rcar_gen3,
125 }, {
126 .compatible = "renesas,rcar-gen2-xhci",
127 .data = &xhci_plat_renesas_rcar_gen2,
128 }, {
129 .compatible = "renesas,rcar-gen3-xhci",
130 .data = &xhci_plat_renesas_rcar_gen3,
131 },
132 {},
133};
134MODULE_DEVICE_TABLE(of, usb_xhci_of_match);
135#endif
136
137static int xhci_plat_probe(struct platform_device *pdev)
138{
139 struct device_node *node = pdev->dev.of_node;
140 struct usb_xhci_pdata *pdata = dev_get_platdata(&pdev->dev);
141 const struct of_device_id *match;
142 const struct hc_driver *driver;
143 struct xhci_hcd *xhci;
144 struct resource *res;
145 struct usb_hcd *hcd;
146 struct clk *clk;
147 int ret;
148 int irq;
149
150 if (usb_disabled())
151 return -ENODEV;
152
153 driver = &xhci_plat_hc_driver;
154
155 irq = platform_get_irq(pdev, 0);
156 if (irq < 0)
157 return -ENODEV;
158
159 /* Try to set 64-bit DMA first */
160 if (WARN_ON(!pdev->dev.dma_mask))
161 /* Platform did not initialize dma_mask */
162 ret = dma_coerce_mask_and_coherent(&pdev->dev,
163 DMA_BIT_MASK(64));
164 else
165 ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
166
167 /* If seting 64-bit DMA mask fails, fall back to 32-bit DMA mask */
168 if (ret) {
169 ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
170 if (ret)
171 return ret;
172 }
173
174 hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
175 if (!hcd)
176 return -ENOMEM;
177
178 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
179 hcd->regs = devm_ioremap_resource(&pdev->dev, res);
180 if (IS_ERR(hcd->regs)) {
181 ret = PTR_ERR(hcd->regs);
182 goto put_hcd;
183 }
184
185 hcd->rsrc_start = res->start;
186 hcd->rsrc_len = resource_size(res);
187
188 /*
189 * Not all platforms have a clk so it is not an error if the
190 * clock does not exists.
191 */
192 clk = devm_clk_get(&pdev->dev, NULL);
193 if (!IS_ERR(clk)) {
194 ret = clk_prepare_enable(clk);
195 if (ret)
196 goto put_hcd;
197 }
198
199 xhci = hcd_to_xhci(hcd);
200 match = of_match_node(usb_xhci_of_match, node);
201 if (match) {
202 const struct xhci_plat_priv *priv_match = match->data;
203 struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);
204
205 /* Just copy data for now */
206 if (priv_match)
207 *priv = *priv_match;
208 }
209
210 if (xhci_plat_type_is(hcd, XHCI_PLAT_TYPE_MARVELL_ARMADA)) {
211 ret = xhci_mvebu_mbus_init_quirk(pdev);
212 if (ret)
213 goto disable_clk;
214 }
215
216 device_wakeup_enable(hcd->self.controller);
217
218 xhci->clk = clk;
219 xhci->main_hcd = hcd;
220 xhci->shared_hcd = usb_create_shared_hcd(driver, &pdev->dev,
221 dev_name(&pdev->dev), hcd);
222 if (!xhci->shared_hcd) {
223 ret = -ENOMEM;
224 goto disable_clk;
225 }
226
227 if ((node && of_property_read_bool(node, "usb3-lpm-capable")) ||
228 (pdata && pdata->usb3_lpm_capable))
229 xhci->quirks |= XHCI_LPM_SUPPORT;
230
231 if (HCC_MAX_PSA(xhci->hcc_params) >= 4)
232 xhci->shared_hcd->can_do_streams = 1;
233
234 hcd->usb_phy = devm_usb_get_phy_by_phandle(&pdev->dev, "usb-phy", 0);
235 if (IS_ERR(hcd->usb_phy)) {
236 ret = PTR_ERR(hcd->usb_phy);
237 if (ret == -EPROBE_DEFER)
238 goto put_usb3_hcd;
239 hcd->usb_phy = NULL;
240 } else {
241 ret = usb_phy_init(hcd->usb_phy);
242 if (ret)
243 goto put_usb3_hcd;
244 }
245
246 ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
247 if (ret)
248 goto disable_usb_phy;
249
250 ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED);
251 if (ret)
252 goto dealloc_usb2_hcd;
253
254 return 0;
255
256
257dealloc_usb2_hcd:
258 usb_remove_hcd(hcd);
259
260disable_usb_phy:
261 usb_phy_shutdown(hcd->usb_phy);
262
263put_usb3_hcd:
264 usb_put_hcd(xhci->shared_hcd);
265
266disable_clk:
267 if (!IS_ERR(clk))
268 clk_disable_unprepare(clk);
269
270put_hcd:
271 usb_put_hcd(hcd);
272
273 return ret;
274}
275
276static int xhci_plat_remove(struct platform_device *dev)
277{
278 struct usb_hcd *hcd = platform_get_drvdata(dev);
279 struct xhci_hcd *xhci = hcd_to_xhci(hcd);
280 struct clk *clk = xhci->clk;
281
282 usb_remove_hcd(xhci->shared_hcd);
283 usb_phy_shutdown(hcd->usb_phy);
284
285 usb_remove_hcd(hcd);
286 usb_put_hcd(xhci->shared_hcd);
287
288 if (!IS_ERR(clk))
289 clk_disable_unprepare(clk);
290 usb_put_hcd(hcd);
291
292 return 0;
293}
294
295#ifdef CONFIG_PM_SLEEP
296static int xhci_plat_suspend(struct device *dev)
297{
298 struct usb_hcd *hcd = dev_get_drvdata(dev);
299 struct xhci_hcd *xhci = hcd_to_xhci(hcd);
300
301 /*
302 * xhci_suspend() needs `do_wakeup` to know whether host is allowed
303 * to do wakeup during suspend. Since xhci_plat_suspend is currently
304 * only designed for system suspend, device_may_wakeup() is enough
305 * to dertermine whether host is allowed to do wakeup. Need to
306 * reconsider this when xhci_plat_suspend enlarges its scope, e.g.,
307 * also applies to runtime suspend.
308 */
309 return xhci_suspend(xhci, device_may_wakeup(dev));
310}
311
312static int xhci_plat_resume(struct device *dev)
313{
314 struct usb_hcd *hcd = dev_get_drvdata(dev);
315 struct xhci_hcd *xhci = hcd_to_xhci(hcd);
316
317 return xhci_resume(xhci, 0);
318}
319
320static const struct dev_pm_ops xhci_plat_pm_ops = {
321 SET_SYSTEM_SLEEP_PM_OPS(xhci_plat_suspend, xhci_plat_resume)
322};
323#define DEV_PM_OPS (&xhci_plat_pm_ops)
324#else
325#define DEV_PM_OPS NULL
326#endif /* CONFIG_PM */
327
328static const struct acpi_device_id usb_xhci_acpi_match[] = {
329 /* XHCI-compliant USB Controller */
330 { "PNP0D10", },
331 { }
332};
333MODULE_DEVICE_TABLE(acpi, usb_xhci_acpi_match);
334
335static struct platform_driver usb_xhci_driver = {
336 .probe = xhci_plat_probe,
337 .remove = xhci_plat_remove,
338 .driver = {
339 .name = "xhci-hcd",
340 .pm = DEV_PM_OPS,
341 .of_match_table = of_match_ptr(usb_xhci_of_match),
342 .acpi_match_table = ACPI_PTR(usb_xhci_acpi_match),
343 },
344};
345MODULE_ALIAS("platform:xhci-hcd");
346
347static int __init xhci_plat_init(void)
348{
349 xhci_init_driver(&xhci_plat_hc_driver, &xhci_plat_overrides);
350 return platform_driver_register(&usb_xhci_driver);
351}
352module_init(xhci_plat_init);
353
354static void __exit xhci_plat_exit(void)
355{
356 platform_driver_unregister(&usb_xhci_driver);
357}
358module_exit(xhci_plat_exit);
359
360MODULE_DESCRIPTION("xHCI Platform Host Controller Driver");
361MODULE_LICENSE("GPL");
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * xhci-plat.c - xHCI host controller driver platform Bus Glue.
4 *
5 * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com
6 * Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
7 *
8 * A lot of code borrowed from the Linux xHCI driver.
9 */
10
11#include <linux/clk.h>
12#include <linux/dma-mapping.h>
13#include <linux/module.h>
14#include <linux/pci.h>
15#include <linux/of.h>
16#include <linux/of_device.h>
17#include <linux/platform_device.h>
18#include <linux/usb/phy.h>
19#include <linux/slab.h>
20#include <linux/acpi.h>
21#include <linux/usb/of.h>
22
23#include "xhci.h"
24#include "xhci-plat.h"
25#include "xhci-mvebu.h"
26#include "xhci-rcar.h"
27
28static struct hc_driver __read_mostly xhci_plat_hc_driver;
29
30static int xhci_plat_setup(struct usb_hcd *hcd);
31static int xhci_plat_start(struct usb_hcd *hcd);
32
33static const struct xhci_driver_overrides xhci_plat_overrides __initconst = {
34 .extra_priv_size = sizeof(struct xhci_plat_priv),
35 .reset = xhci_plat_setup,
36 .start = xhci_plat_start,
37};
38
39static void xhci_priv_plat_start(struct usb_hcd *hcd)
40{
41 struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);
42
43 if (priv->plat_start)
44 priv->plat_start(hcd);
45}
46
47static int xhci_priv_init_quirk(struct usb_hcd *hcd)
48{
49 struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);
50
51 if (!priv->init_quirk)
52 return 0;
53
54 return priv->init_quirk(hcd);
55}
56
57static int xhci_priv_suspend_quirk(struct usb_hcd *hcd)
58{
59 struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);
60
61 if (!priv->suspend_quirk)
62 return 0;
63
64 return priv->suspend_quirk(hcd);
65}
66
67static int xhci_priv_resume_quirk(struct usb_hcd *hcd)
68{
69 struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);
70
71 if (!priv->resume_quirk)
72 return 0;
73
74 return priv->resume_quirk(hcd);
75}
76
77static void xhci_plat_quirks(struct device *dev, struct xhci_hcd *xhci)
78{
79 struct xhci_plat_priv *priv = xhci_to_priv(xhci);
80
81 /*
82 * As of now platform drivers don't provide MSI support so we ensure
83 * here that the generic code does not try to make a pci_dev from our
84 * dev struct in order to setup MSI
85 */
86 xhci->quirks |= XHCI_PLAT | priv->quirks;
87}
88
89/* called during probe() after chip reset completes */
90static int xhci_plat_setup(struct usb_hcd *hcd)
91{
92 int ret;
93
94
95 ret = xhci_priv_init_quirk(hcd);
96 if (ret)
97 return ret;
98
99 return xhci_gen_setup(hcd, xhci_plat_quirks);
100}
101
102static int xhci_plat_start(struct usb_hcd *hcd)
103{
104 xhci_priv_plat_start(hcd);
105 return xhci_run(hcd);
106}
107
108#ifdef CONFIG_OF
109static const struct xhci_plat_priv xhci_plat_marvell_armada = {
110 .init_quirk = xhci_mvebu_mbus_init_quirk,
111};
112
113static const struct xhci_plat_priv xhci_plat_marvell_armada3700 = {
114 .init_quirk = xhci_mvebu_a3700_init_quirk,
115};
116
117static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen2 = {
118 SET_XHCI_PLAT_PRIV_FOR_RCAR(XHCI_RCAR_FIRMWARE_NAME_V1)
119};
120
121static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen3 = {
122 SET_XHCI_PLAT_PRIV_FOR_RCAR(XHCI_RCAR_FIRMWARE_NAME_V3)
123};
124
125static const struct xhci_plat_priv xhci_plat_brcm = {
126 .quirks = XHCI_RESET_ON_RESUME | XHCI_SUSPEND_RESUME_CLKS,
127};
128
129static const struct of_device_id usb_xhci_of_match[] = {
130 {
131 .compatible = "generic-xhci",
132 }, {
133 .compatible = "xhci-platform",
134 }, {
135 .compatible = "marvell,armada-375-xhci",
136 .data = &xhci_plat_marvell_armada,
137 }, {
138 .compatible = "marvell,armada-380-xhci",
139 .data = &xhci_plat_marvell_armada,
140 }, {
141 .compatible = "marvell,armada3700-xhci",
142 .data = &xhci_plat_marvell_armada3700,
143 }, {
144 .compatible = "renesas,xhci-r8a7790",
145 .data = &xhci_plat_renesas_rcar_gen2,
146 }, {
147 .compatible = "renesas,xhci-r8a7791",
148 .data = &xhci_plat_renesas_rcar_gen2,
149 }, {
150 .compatible = "renesas,xhci-r8a7793",
151 .data = &xhci_plat_renesas_rcar_gen2,
152 }, {
153 .compatible = "renesas,xhci-r8a7795",
154 .data = &xhci_plat_renesas_rcar_gen3,
155 }, {
156 .compatible = "renesas,xhci-r8a7796",
157 .data = &xhci_plat_renesas_rcar_gen3,
158 }, {
159 .compatible = "renesas,rcar-gen2-xhci",
160 .data = &xhci_plat_renesas_rcar_gen2,
161 }, {
162 .compatible = "renesas,rcar-gen3-xhci",
163 .data = &xhci_plat_renesas_rcar_gen3,
164 }, {
165 .compatible = "brcm,xhci-brcm-v2",
166 .data = &xhci_plat_brcm,
167 }, {
168 .compatible = "brcm,bcm7445-xhci",
169 .data = &xhci_plat_brcm,
170 },
171 {},
172};
173MODULE_DEVICE_TABLE(of, usb_xhci_of_match);
174#endif
175
176static int xhci_plat_probe(struct platform_device *pdev)
177{
178 const struct xhci_plat_priv *priv_match;
179 const struct hc_driver *driver;
180 struct device *sysdev, *tmpdev;
181 struct xhci_hcd *xhci;
182 struct resource *res;
183 struct usb_hcd *hcd, *usb3_hcd;
184 int ret;
185 int irq;
186 struct xhci_plat_priv *priv = NULL;
187
188
189 if (usb_disabled())
190 return -ENODEV;
191
192 driver = &xhci_plat_hc_driver;
193
194 irq = platform_get_irq(pdev, 0);
195 if (irq < 0)
196 return irq;
197
198 /*
199 * sysdev must point to a device that is known to the system firmware
200 * or PCI hardware. We handle these three cases here:
201 * 1. xhci_plat comes from firmware
202 * 2. xhci_plat is child of a device from firmware (dwc3-plat)
203 * 3. xhci_plat is grandchild of a pci device (dwc3-pci)
204 */
205 for (sysdev = &pdev->dev; sysdev; sysdev = sysdev->parent) {
206 if (is_of_node(sysdev->fwnode) ||
207 is_acpi_device_node(sysdev->fwnode))
208 break;
209#ifdef CONFIG_PCI
210 else if (sysdev->bus == &pci_bus_type)
211 break;
212#endif
213 }
214
215 if (!sysdev)
216 sysdev = &pdev->dev;
217
218 if (WARN_ON(!sysdev->dma_mask))
219 /* Platform did not initialize dma_mask */
220 ret = dma_coerce_mask_and_coherent(sysdev, DMA_BIT_MASK(64));
221 else
222 ret = dma_set_mask_and_coherent(sysdev, DMA_BIT_MASK(64));
223 if (ret)
224 return ret;
225
226 pm_runtime_set_active(&pdev->dev);
227 pm_runtime_enable(&pdev->dev);
228 pm_runtime_get_noresume(&pdev->dev);
229
230 hcd = __usb_create_hcd(driver, sysdev, &pdev->dev,
231 dev_name(&pdev->dev), NULL);
232 if (!hcd) {
233 ret = -ENOMEM;
234 goto disable_runtime;
235 }
236
237 hcd->regs = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
238 if (IS_ERR(hcd->regs)) {
239 ret = PTR_ERR(hcd->regs);
240 goto put_hcd;
241 }
242
243 hcd->rsrc_start = res->start;
244 hcd->rsrc_len = resource_size(res);
245
246 xhci = hcd_to_xhci(hcd);
247
248 xhci->allow_single_roothub = 1;
249
250 /*
251 * Not all platforms have clks so it is not an error if the
252 * clock do not exist.
253 */
254 xhci->reg_clk = devm_clk_get_optional(&pdev->dev, "reg");
255 if (IS_ERR(xhci->reg_clk)) {
256 ret = PTR_ERR(xhci->reg_clk);
257 goto put_hcd;
258 }
259
260 ret = clk_prepare_enable(xhci->reg_clk);
261 if (ret)
262 goto put_hcd;
263
264 xhci->clk = devm_clk_get_optional(&pdev->dev, NULL);
265 if (IS_ERR(xhci->clk)) {
266 ret = PTR_ERR(xhci->clk);
267 goto disable_reg_clk;
268 }
269
270 ret = clk_prepare_enable(xhci->clk);
271 if (ret)
272 goto disable_reg_clk;
273
274 if (pdev->dev.of_node)
275 priv_match = of_device_get_match_data(&pdev->dev);
276 else
277 priv_match = dev_get_platdata(&pdev->dev);
278
279 if (priv_match) {
280 priv = hcd_to_xhci_priv(hcd);
281 /* Just copy data for now */
282 *priv = *priv_match;
283 }
284
285 device_set_wakeup_capable(&pdev->dev, true);
286
287 xhci->main_hcd = hcd;
288
289 /* imod_interval is the interrupt moderation value in nanoseconds. */
290 xhci->imod_interval = 40000;
291
292 /* Iterate over all parent nodes for finding quirks */
293 for (tmpdev = &pdev->dev; tmpdev; tmpdev = tmpdev->parent) {
294
295 if (device_property_read_bool(tmpdev, "usb2-lpm-disable"))
296 xhci->quirks |= XHCI_HW_LPM_DISABLE;
297
298 if (device_property_read_bool(tmpdev, "usb3-lpm-capable"))
299 xhci->quirks |= XHCI_LPM_SUPPORT;
300
301 if (device_property_read_bool(tmpdev, "quirk-broken-port-ped"))
302 xhci->quirks |= XHCI_BROKEN_PORT_PED;
303
304 device_property_read_u32(tmpdev, "imod-interval-ns",
305 &xhci->imod_interval);
306 }
307
308 hcd->usb_phy = devm_usb_get_phy_by_phandle(sysdev, "usb-phy", 0);
309 if (IS_ERR(hcd->usb_phy)) {
310 ret = PTR_ERR(hcd->usb_phy);
311 if (ret == -EPROBE_DEFER)
312 goto disable_clk;
313 hcd->usb_phy = NULL;
314 } else {
315 ret = usb_phy_init(hcd->usb_phy);
316 if (ret)
317 goto disable_clk;
318 }
319
320 hcd->tpl_support = of_usb_host_tpl_support(sysdev->of_node);
321
322 if (priv && (priv->quirks & XHCI_SKIP_PHY_INIT))
323 hcd->skip_phy_initialization = 1;
324
325 if (priv && (priv->quirks & XHCI_SG_TRB_CACHE_SIZE_QUIRK))
326 xhci->quirks |= XHCI_SG_TRB_CACHE_SIZE_QUIRK;
327
328 ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
329 if (ret)
330 goto disable_usb_phy;
331
332 if (!xhci_has_one_roothub(xhci)) {
333 xhci->shared_hcd = __usb_create_hcd(driver, sysdev, &pdev->dev,
334 dev_name(&pdev->dev), hcd);
335 if (!xhci->shared_hcd) {
336 ret = -ENOMEM;
337 goto dealloc_usb2_hcd;
338 }
339
340 xhci->shared_hcd->tpl_support = hcd->tpl_support;
341 }
342
343 usb3_hcd = xhci_get_usb3_hcd(xhci);
344 if (usb3_hcd && HCC_MAX_PSA(xhci->hcc_params) >= 4)
345 usb3_hcd->can_do_streams = 1;
346
347 if (xhci->shared_hcd) {
348 ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED);
349 if (ret)
350 goto put_usb3_hcd;
351 }
352
353 device_enable_async_suspend(&pdev->dev);
354 pm_runtime_put_noidle(&pdev->dev);
355
356 /*
357 * Prevent runtime pm from being on as default, users should enable
358 * runtime pm using power/control in sysfs.
359 */
360 pm_runtime_forbid(&pdev->dev);
361
362 return 0;
363
364
365put_usb3_hcd:
366 usb_put_hcd(xhci->shared_hcd);
367
368dealloc_usb2_hcd:
369 usb_remove_hcd(hcd);
370
371disable_usb_phy:
372 usb_phy_shutdown(hcd->usb_phy);
373
374disable_clk:
375 clk_disable_unprepare(xhci->clk);
376
377disable_reg_clk:
378 clk_disable_unprepare(xhci->reg_clk);
379
380put_hcd:
381 usb_put_hcd(hcd);
382
383disable_runtime:
384 pm_runtime_put_noidle(&pdev->dev);
385 pm_runtime_disable(&pdev->dev);
386
387 return ret;
388}
389
390static int xhci_plat_remove(struct platform_device *dev)
391{
392 struct usb_hcd *hcd = platform_get_drvdata(dev);
393 struct xhci_hcd *xhci = hcd_to_xhci(hcd);
394 struct clk *clk = xhci->clk;
395 struct clk *reg_clk = xhci->reg_clk;
396 struct usb_hcd *shared_hcd = xhci->shared_hcd;
397
398 pm_runtime_get_sync(&dev->dev);
399 xhci->xhc_state |= XHCI_STATE_REMOVING;
400
401 if (shared_hcd) {
402 usb_remove_hcd(shared_hcd);
403 xhci->shared_hcd = NULL;
404 }
405
406 usb_phy_shutdown(hcd->usb_phy);
407
408 usb_remove_hcd(hcd);
409
410 if (shared_hcd)
411 usb_put_hcd(shared_hcd);
412
413 clk_disable_unprepare(clk);
414 clk_disable_unprepare(reg_clk);
415 usb_put_hcd(hcd);
416
417 pm_runtime_disable(&dev->dev);
418 pm_runtime_put_noidle(&dev->dev);
419 pm_runtime_set_suspended(&dev->dev);
420
421 return 0;
422}
423
424static int __maybe_unused xhci_plat_suspend(struct device *dev)
425{
426 struct usb_hcd *hcd = dev_get_drvdata(dev);
427 struct xhci_hcd *xhci = hcd_to_xhci(hcd);
428 int ret;
429
430 if (pm_runtime_suspended(dev))
431 pm_runtime_resume(dev);
432
433 ret = xhci_priv_suspend_quirk(hcd);
434 if (ret)
435 return ret;
436 /*
437 * xhci_suspend() needs `do_wakeup` to know whether host is allowed
438 * to do wakeup during suspend.
439 */
440 ret = xhci_suspend(xhci, device_may_wakeup(dev));
441 if (ret)
442 return ret;
443
444 if (!device_may_wakeup(dev) && (xhci->quirks & XHCI_SUSPEND_RESUME_CLKS)) {
445 clk_disable_unprepare(xhci->clk);
446 clk_disable_unprepare(xhci->reg_clk);
447 }
448
449 return 0;
450}
451
452static int __maybe_unused xhci_plat_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 (!device_may_wakeup(dev) && (xhci->quirks & XHCI_SUSPEND_RESUME_CLKS)) {
459 clk_prepare_enable(xhci->clk);
460 clk_prepare_enable(xhci->reg_clk);
461 }
462
463 ret = xhci_priv_resume_quirk(hcd);
464 if (ret)
465 return ret;
466
467 ret = xhci_resume(xhci, 0);
468 if (ret)
469 return ret;
470
471 pm_runtime_disable(dev);
472 pm_runtime_set_active(dev);
473 pm_runtime_enable(dev);
474
475 return 0;
476}
477
478static int __maybe_unused xhci_plat_runtime_suspend(struct device *dev)
479{
480 struct usb_hcd *hcd = dev_get_drvdata(dev);
481 struct xhci_hcd *xhci = hcd_to_xhci(hcd);
482 int ret;
483
484 ret = xhci_priv_suspend_quirk(hcd);
485 if (ret)
486 return ret;
487
488 return xhci_suspend(xhci, true);
489}
490
491static int __maybe_unused xhci_plat_runtime_resume(struct device *dev)
492{
493 struct usb_hcd *hcd = dev_get_drvdata(dev);
494 struct xhci_hcd *xhci = hcd_to_xhci(hcd);
495
496 return xhci_resume(xhci, 0);
497}
498
499static const struct dev_pm_ops xhci_plat_pm_ops = {
500 SET_SYSTEM_SLEEP_PM_OPS(xhci_plat_suspend, xhci_plat_resume)
501
502 SET_RUNTIME_PM_OPS(xhci_plat_runtime_suspend,
503 xhci_plat_runtime_resume,
504 NULL)
505};
506
507#ifdef CONFIG_ACPI
508static const struct acpi_device_id usb_xhci_acpi_match[] = {
509 /* XHCI-compliant USB Controller */
510 { "PNP0D10", },
511 { }
512};
513MODULE_DEVICE_TABLE(acpi, usb_xhci_acpi_match);
514#endif
515
516static struct platform_driver usb_xhci_driver = {
517 .probe = xhci_plat_probe,
518 .remove = xhci_plat_remove,
519 .shutdown = usb_hcd_platform_shutdown,
520 .driver = {
521 .name = "xhci-hcd",
522 .pm = &xhci_plat_pm_ops,
523 .of_match_table = of_match_ptr(usb_xhci_of_match),
524 .acpi_match_table = ACPI_PTR(usb_xhci_acpi_match),
525 },
526};
527MODULE_ALIAS("platform:xhci-hcd");
528
529static int __init xhci_plat_init(void)
530{
531 xhci_init_driver(&xhci_plat_hc_driver, &xhci_plat_overrides);
532 return platform_driver_register(&usb_xhci_driver);
533}
534module_init(xhci_plat_init);
535
536static void __exit xhci_plat_exit(void)
537{
538 platform_driver_unregister(&usb_xhci_driver);
539}
540module_exit(xhci_plat_exit);
541
542MODULE_DESCRIPTION("xHCI Platform Host Controller Driver");
543MODULE_LICENSE("GPL");