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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 - http://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_resume_quirk(struct usb_hcd *hcd)
58{
59 struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);
60
61 if (!priv->resume_quirk)
62 return 0;
63
64 return priv->resume_quirk(hcd);
65}
66
67static void xhci_plat_quirks(struct device *dev, struct xhci_hcd *xhci)
68{
69 struct xhci_plat_priv *priv = xhci_to_priv(xhci);
70
71 /*
72 * As of now platform drivers don't provide MSI support so we ensure
73 * here that the generic code does not try to make a pci_dev from our
74 * dev struct in order to setup MSI
75 */
76 xhci->quirks |= XHCI_PLAT | priv->quirks;
77}
78
79/* called during probe() after chip reset completes */
80static int xhci_plat_setup(struct usb_hcd *hcd)
81{
82 int ret;
83
84
85 ret = xhci_priv_init_quirk(hcd);
86 if (ret)
87 return ret;
88
89 return xhci_gen_setup(hcd, xhci_plat_quirks);
90}
91
92static int xhci_plat_start(struct usb_hcd *hcd)
93{
94 xhci_priv_plat_start(hcd);
95 return xhci_run(hcd);
96}
97
98#ifdef CONFIG_OF
99static const struct xhci_plat_priv xhci_plat_marvell_armada = {
100 .init_quirk = xhci_mvebu_mbus_init_quirk,
101};
102
103static const struct xhci_plat_priv xhci_plat_marvell_armada3700 = {
104 .init_quirk = xhci_mvebu_a3700_init_quirk,
105};
106
107static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen2 = {
108 SET_XHCI_PLAT_PRIV_FOR_RCAR(XHCI_RCAR_FIRMWARE_NAME_V1)
109};
110
111static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen3 = {
112 SET_XHCI_PLAT_PRIV_FOR_RCAR(XHCI_RCAR_FIRMWARE_NAME_V3)
113};
114
115static const struct of_device_id usb_xhci_of_match[] = {
116 {
117 .compatible = "generic-xhci",
118 }, {
119 .compatible = "xhci-platform",
120 }, {
121 .compatible = "marvell,armada-375-xhci",
122 .data = &xhci_plat_marvell_armada,
123 }, {
124 .compatible = "marvell,armada-380-xhci",
125 .data = &xhci_plat_marvell_armada,
126 }, {
127 .compatible = "marvell,armada3700-xhci",
128 .data = &xhci_plat_marvell_armada3700,
129 }, {
130 .compatible = "renesas,xhci-r8a7790",
131 .data = &xhci_plat_renesas_rcar_gen2,
132 }, {
133 .compatible = "renesas,xhci-r8a7791",
134 .data = &xhci_plat_renesas_rcar_gen2,
135 }, {
136 .compatible = "renesas,xhci-r8a7793",
137 .data = &xhci_plat_renesas_rcar_gen2,
138 }, {
139 .compatible = "renesas,xhci-r8a7795",
140 .data = &xhci_plat_renesas_rcar_gen3,
141 }, {
142 .compatible = "renesas,xhci-r8a7796",
143 .data = &xhci_plat_renesas_rcar_gen3,
144 }, {
145 .compatible = "renesas,rcar-gen2-xhci",
146 .data = &xhci_plat_renesas_rcar_gen2,
147 }, {
148 .compatible = "renesas,rcar-gen3-xhci",
149 .data = &xhci_plat_renesas_rcar_gen3,
150 },
151 {},
152};
153MODULE_DEVICE_TABLE(of, usb_xhci_of_match);
154#endif
155
156static int xhci_plat_probe(struct platform_device *pdev)
157{
158 const struct xhci_plat_priv *priv_match;
159 const struct hc_driver *driver;
160 struct device *sysdev, *tmpdev;
161 struct xhci_hcd *xhci;
162 struct resource *res;
163 struct usb_hcd *hcd;
164 int ret;
165 int irq;
166
167 if (usb_disabled())
168 return -ENODEV;
169
170 driver = &xhci_plat_hc_driver;
171
172 irq = platform_get_irq(pdev, 0);
173 if (irq < 0)
174 return irq;
175
176 /*
177 * sysdev must point to a device that is known to the system firmware
178 * or PCI hardware. We handle these three cases here:
179 * 1. xhci_plat comes from firmware
180 * 2. xhci_plat is child of a device from firmware (dwc3-plat)
181 * 3. xhci_plat is grandchild of a pci device (dwc3-pci)
182 */
183 for (sysdev = &pdev->dev; sysdev; sysdev = sysdev->parent) {
184 if (is_of_node(sysdev->fwnode) ||
185 is_acpi_device_node(sysdev->fwnode))
186 break;
187#ifdef CONFIG_PCI
188 else if (sysdev->bus == &pci_bus_type)
189 break;
190#endif
191 }
192
193 if (!sysdev)
194 sysdev = &pdev->dev;
195
196 /* Try to set 64-bit DMA first */
197 if (WARN_ON(!sysdev->dma_mask))
198 /* Platform did not initialize dma_mask */
199 ret = dma_coerce_mask_and_coherent(sysdev,
200 DMA_BIT_MASK(64));
201 else
202 ret = dma_set_mask_and_coherent(sysdev, DMA_BIT_MASK(64));
203
204 /* If seting 64-bit DMA mask fails, fall back to 32-bit DMA mask */
205 if (ret) {
206 ret = dma_set_mask_and_coherent(sysdev, DMA_BIT_MASK(32));
207 if (ret)
208 return ret;
209 }
210
211 pm_runtime_set_active(&pdev->dev);
212 pm_runtime_enable(&pdev->dev);
213 pm_runtime_get_noresume(&pdev->dev);
214
215 hcd = __usb_create_hcd(driver, sysdev, &pdev->dev,
216 dev_name(&pdev->dev), NULL);
217 if (!hcd) {
218 ret = -ENOMEM;
219 goto disable_runtime;
220 }
221
222 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
223 hcd->regs = devm_ioremap_resource(&pdev->dev, res);
224 if (IS_ERR(hcd->regs)) {
225 ret = PTR_ERR(hcd->regs);
226 goto put_hcd;
227 }
228
229 hcd->rsrc_start = res->start;
230 hcd->rsrc_len = resource_size(res);
231
232 xhci = hcd_to_xhci(hcd);
233
234 /*
235 * Not all platforms have clks so it is not an error if the
236 * clock do not exist.
237 */
238 xhci->reg_clk = devm_clk_get_optional(&pdev->dev, "reg");
239 if (IS_ERR(xhci->reg_clk)) {
240 ret = PTR_ERR(xhci->reg_clk);
241 goto put_hcd;
242 }
243
244 ret = clk_prepare_enable(xhci->reg_clk);
245 if (ret)
246 goto put_hcd;
247
248 xhci->clk = devm_clk_get_optional(&pdev->dev, NULL);
249 if (IS_ERR(xhci->clk)) {
250 ret = PTR_ERR(xhci->clk);
251 goto disable_reg_clk;
252 }
253
254 ret = clk_prepare_enable(xhci->clk);
255 if (ret)
256 goto disable_reg_clk;
257
258 priv_match = of_device_get_match_data(&pdev->dev);
259 if (priv_match) {
260 struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);
261
262 /* Just copy data for now */
263 if (priv_match)
264 *priv = *priv_match;
265 }
266
267 device_wakeup_enable(hcd->self.controller);
268
269 xhci->main_hcd = hcd;
270 xhci->shared_hcd = __usb_create_hcd(driver, sysdev, &pdev->dev,
271 dev_name(&pdev->dev), hcd);
272 if (!xhci->shared_hcd) {
273 ret = -ENOMEM;
274 goto disable_clk;
275 }
276
277 /* imod_interval is the interrupt moderation value in nanoseconds. */
278 xhci->imod_interval = 40000;
279
280 /* Iterate over all parent nodes for finding quirks */
281 for (tmpdev = &pdev->dev; tmpdev; tmpdev = tmpdev->parent) {
282
283 if (device_property_read_bool(tmpdev, "usb2-lpm-disable"))
284 xhci->quirks |= XHCI_HW_LPM_DISABLE;
285
286 if (device_property_read_bool(tmpdev, "usb3-lpm-capable"))
287 xhci->quirks |= XHCI_LPM_SUPPORT;
288
289 if (device_property_read_bool(tmpdev, "quirk-broken-port-ped"))
290 xhci->quirks |= XHCI_BROKEN_PORT_PED;
291
292 device_property_read_u32(tmpdev, "imod-interval-ns",
293 &xhci->imod_interval);
294 }
295
296 hcd->usb_phy = devm_usb_get_phy_by_phandle(sysdev, "usb-phy", 0);
297 if (IS_ERR(hcd->usb_phy)) {
298 ret = PTR_ERR(hcd->usb_phy);
299 if (ret == -EPROBE_DEFER)
300 goto put_usb3_hcd;
301 hcd->usb_phy = NULL;
302 } else {
303 ret = usb_phy_init(hcd->usb_phy);
304 if (ret)
305 goto put_usb3_hcd;
306 }
307
308 hcd->tpl_support = of_usb_host_tpl_support(sysdev->of_node);
309 xhci->shared_hcd->tpl_support = hcd->tpl_support;
310 ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
311 if (ret)
312 goto disable_usb_phy;
313
314 if (HCC_MAX_PSA(xhci->hcc_params) >= 4)
315 xhci->shared_hcd->can_do_streams = 1;
316
317 ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED);
318 if (ret)
319 goto dealloc_usb2_hcd;
320
321 device_enable_async_suspend(&pdev->dev);
322 pm_runtime_put_noidle(&pdev->dev);
323
324 /*
325 * Prevent runtime pm from being on as default, users should enable
326 * runtime pm using power/control in sysfs.
327 */
328 pm_runtime_forbid(&pdev->dev);
329
330 return 0;
331
332
333dealloc_usb2_hcd:
334 usb_remove_hcd(hcd);
335
336disable_usb_phy:
337 usb_phy_shutdown(hcd->usb_phy);
338
339put_usb3_hcd:
340 usb_put_hcd(xhci->shared_hcd);
341
342disable_clk:
343 clk_disable_unprepare(xhci->clk);
344
345disable_reg_clk:
346 clk_disable_unprepare(xhci->reg_clk);
347
348put_hcd:
349 usb_put_hcd(hcd);
350
351disable_runtime:
352 pm_runtime_put_noidle(&pdev->dev);
353 pm_runtime_disable(&pdev->dev);
354
355 return ret;
356}
357
358static int xhci_plat_remove(struct platform_device *dev)
359{
360 struct usb_hcd *hcd = platform_get_drvdata(dev);
361 struct xhci_hcd *xhci = hcd_to_xhci(hcd);
362 struct clk *clk = xhci->clk;
363 struct clk *reg_clk = xhci->reg_clk;
364 struct usb_hcd *shared_hcd = xhci->shared_hcd;
365
366 xhci->xhc_state |= XHCI_STATE_REMOVING;
367
368 usb_remove_hcd(shared_hcd);
369 xhci->shared_hcd = NULL;
370 usb_phy_shutdown(hcd->usb_phy);
371
372 usb_remove_hcd(hcd);
373 usb_put_hcd(shared_hcd);
374
375 clk_disable_unprepare(clk);
376 clk_disable_unprepare(reg_clk);
377 usb_put_hcd(hcd);
378
379 pm_runtime_set_suspended(&dev->dev);
380 pm_runtime_disable(&dev->dev);
381
382 return 0;
383}
384
385static int __maybe_unused xhci_plat_suspend(struct device *dev)
386{
387 struct usb_hcd *hcd = dev_get_drvdata(dev);
388 struct xhci_hcd *xhci = hcd_to_xhci(hcd);
389
390 /*
391 * xhci_suspend() needs `do_wakeup` to know whether host is allowed
392 * to do wakeup during suspend. Since xhci_plat_suspend is currently
393 * only designed for system suspend, device_may_wakeup() is enough
394 * to dertermine whether host is allowed to do wakeup. Need to
395 * reconsider this when xhci_plat_suspend enlarges its scope, e.g.,
396 * also applies to runtime suspend.
397 */
398 return xhci_suspend(xhci, device_may_wakeup(dev));
399}
400
401static int __maybe_unused xhci_plat_resume(struct device *dev)
402{
403 struct usb_hcd *hcd = dev_get_drvdata(dev);
404 struct xhci_hcd *xhci = hcd_to_xhci(hcd);
405 int ret;
406
407 ret = xhci_priv_resume_quirk(hcd);
408 if (ret)
409 return ret;
410
411 return xhci_resume(xhci, 0);
412}
413
414static int __maybe_unused xhci_plat_runtime_suspend(struct device *dev)
415{
416 struct usb_hcd *hcd = dev_get_drvdata(dev);
417 struct xhci_hcd *xhci = hcd_to_xhci(hcd);
418
419 return xhci_suspend(xhci, true);
420}
421
422static int __maybe_unused xhci_plat_runtime_resume(struct device *dev)
423{
424 struct usb_hcd *hcd = dev_get_drvdata(dev);
425 struct xhci_hcd *xhci = hcd_to_xhci(hcd);
426
427 return xhci_resume(xhci, 0);
428}
429
430static const struct dev_pm_ops xhci_plat_pm_ops = {
431 SET_SYSTEM_SLEEP_PM_OPS(xhci_plat_suspend, xhci_plat_resume)
432
433 SET_RUNTIME_PM_OPS(xhci_plat_runtime_suspend,
434 xhci_plat_runtime_resume,
435 NULL)
436};
437
438static const struct acpi_device_id usb_xhci_acpi_match[] = {
439 /* XHCI-compliant USB Controller */
440 { "PNP0D10", },
441 { }
442};
443MODULE_DEVICE_TABLE(acpi, usb_xhci_acpi_match);
444
445static struct platform_driver usb_xhci_driver = {
446 .probe = xhci_plat_probe,
447 .remove = xhci_plat_remove,
448 .driver = {
449 .name = "xhci-hcd",
450 .pm = &xhci_plat_pm_ops,
451 .of_match_table = of_match_ptr(usb_xhci_of_match),
452 .acpi_match_table = ACPI_PTR(usb_xhci_acpi_match),
453 },
454};
455MODULE_ALIAS("platform:xhci-hcd");
456
457static int __init xhci_plat_init(void)
458{
459 xhci_init_driver(&xhci_plat_hc_driver, &xhci_plat_overrides);
460 return platform_driver_register(&usb_xhci_driver);
461}
462module_init(xhci_plat_init);
463
464static void __exit xhci_plat_exit(void)
465{
466 platform_driver_unregister(&usb_xhci_driver);
467}
468module_exit(xhci_plat_exit);
469
470MODULE_DESCRIPTION("xHCI Platform Host Controller Driver");
471MODULE_LICENSE("GPL");