Commit | Line | Data |
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15302800 RZ |
1 | /* |
2 | * Copyright 2012 Freescale Semiconductor, Inc. | |
3 | * Copyright (C) 2012 Marek Vasut <marex@denx.de> | |
4 | * on behalf of DENX Software Engineering GmbH | |
5 | * | |
6 | * The code contained herein is licensed under the GNU General Public | |
7 | * License. You may obtain a copy of the GNU General Public License | |
8 | * Version 2 or later at the following locations: | |
9 | * | |
10 | * http://www.opensource.org/licenses/gpl-license.html | |
11 | * http://www.gnu.org/copyleft/gpl.html | |
12 | */ | |
13 | ||
14 | #include <linux/module.h> | |
15 | #include <linux/of_platform.h> | |
16 | #include <linux/of_gpio.h> | |
17 | #include <linux/platform_device.h> | |
18 | #include <linux/pm_runtime.h> | |
19 | #include <linux/dma-mapping.h> | |
20 | #include <linux/usb/chipidea.h> | |
21 | #include <linux/clk.h> | |
15302800 RZ |
22 | |
23 | #include "ci.h" | |
8e22978c | 24 | #include "ci_hdrc_imx.h" |
15302800 | 25 | |
1071055e PC |
26 | struct ci_hdrc_imx_platform_flag { |
27 | unsigned int flags; | |
e14db48d | 28 | bool runtime_pm; |
1071055e PC |
29 | }; |
30 | ||
31 | static const struct ci_hdrc_imx_platform_flag imx27_usb_data = { | |
0ef877a4 | 32 | CI_HDRC_DISABLE_STREAMING, |
1071055e PC |
33 | }; |
34 | ||
35 | static const struct ci_hdrc_imx_platform_flag imx28_usb_data = { | |
6adb9b7b | 36 | .flags = CI_HDRC_IMX28_WRITE_FIX | |
0ef877a4 PC |
37 | CI_HDRC_TURN_VBUS_EARLY_ON | |
38 | CI_HDRC_DISABLE_STREAMING, | |
1071055e PC |
39 | }; |
40 | ||
e14db48d | 41 | static const struct ci_hdrc_imx_platform_flag imx6q_usb_data = { |
6adb9b7b | 42 | .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | |
0ef877a4 PC |
43 | CI_HDRC_TURN_VBUS_EARLY_ON | |
44 | CI_HDRC_DISABLE_STREAMING, | |
e14db48d PC |
45 | }; |
46 | ||
47 | static const struct ci_hdrc_imx_platform_flag imx6sl_usb_data = { | |
6adb9b7b | 48 | .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | |
0ef877a4 PC |
49 | CI_HDRC_TURN_VBUS_EARLY_ON | |
50 | CI_HDRC_DISABLE_HOST_STREAMING, | |
e14db48d PC |
51 | }; |
52 | ||
53 | static const struct ci_hdrc_imx_platform_flag imx6sx_usb_data = { | |
6adb9b7b | 54 | .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | |
0ef877a4 PC |
55 | CI_HDRC_TURN_VBUS_EARLY_ON | |
56 | CI_HDRC_DISABLE_HOST_STREAMING, | |
e14db48d PC |
57 | }; |
58 | ||
1071055e PC |
59 | static const struct of_device_id ci_hdrc_imx_dt_ids[] = { |
60 | { .compatible = "fsl,imx28-usb", .data = &imx28_usb_data}, | |
61 | { .compatible = "fsl,imx27-usb", .data = &imx27_usb_data}, | |
e14db48d PC |
62 | { .compatible = "fsl,imx6q-usb", .data = &imx6q_usb_data}, |
63 | { .compatible = "fsl,imx6sl-usb", .data = &imx6sl_usb_data}, | |
64 | { .compatible = "fsl,imx6sx-usb", .data = &imx6sl_usb_data}, | |
1071055e PC |
65 | { /* sentinel */ } |
66 | }; | |
67 | MODULE_DEVICE_TABLE(of, ci_hdrc_imx_dt_ids); | |
68 | ||
8e22978c | 69 | struct ci_hdrc_imx_data { |
15302800 RZ |
70 | struct usb_phy *phy; |
71 | struct platform_device *ci_pdev; | |
72 | struct clk *clk; | |
05986ba9 | 73 | struct imx_usbmisc_data *usbmisc_data; |
e14db48d PC |
74 | bool supports_runtime_pm; |
75 | bool in_lpm; | |
15302800 RZ |
76 | }; |
77 | ||
d142d6be RZ |
78 | /* Common functions shared by usbmisc drivers */ |
79 | ||
05986ba9 | 80 | static struct imx_usbmisc_data *usbmisc_get_init_data(struct device *dev) |
d142d6be | 81 | { |
f40017e0 | 82 | struct platform_device *misc_pdev; |
d142d6be RZ |
83 | struct device_node *np = dev->of_node; |
84 | struct of_phandle_args args; | |
05986ba9 | 85 | struct imx_usbmisc_data *data; |
d142d6be RZ |
86 | int ret; |
87 | ||
05986ba9 SH |
88 | /* |
89 | * In case the fsl,usbmisc property is not present this device doesn't | |
90 | * need usbmisc. Return NULL (which is no error here) | |
91 | */ | |
92 | if (!of_get_property(np, "fsl,usbmisc", NULL)) | |
93 | return NULL; | |
94 | ||
95 | data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); | |
96 | if (!data) | |
97 | return ERR_PTR(-ENOMEM); | |
d142d6be RZ |
98 | |
99 | ret = of_parse_phandle_with_args(np, "fsl,usbmisc", "#index-cells", | |
100 | 0, &args); | |
101 | if (ret) { | |
102 | dev_err(dev, "Failed to parse property fsl,usbmisc, errno %d\n", | |
103 | ret); | |
05986ba9 | 104 | return ERR_PTR(ret); |
d142d6be | 105 | } |
05986ba9 SH |
106 | |
107 | data->index = args.args[0]; | |
f40017e0 SA |
108 | |
109 | misc_pdev = of_find_device_by_node(args.np); | |
d142d6be RZ |
110 | of_node_put(args.np); |
111 | ||
ef12da91 | 112 | if (!misc_pdev || !platform_get_drvdata(misc_pdev)) |
f40017e0 SA |
113 | return ERR_PTR(-EPROBE_DEFER); |
114 | ||
115 | data->dev = &misc_pdev->dev; | |
116 | ||
d142d6be | 117 | if (of_find_property(np, "disable-over-current", NULL)) |
05986ba9 | 118 | data->disable_oc = 1; |
d142d6be | 119 | |
a0685330 | 120 | if (of_find_property(np, "external-vbus-divider", NULL)) |
05986ba9 | 121 | data->evdo = 1; |
a0685330 | 122 | |
05986ba9 | 123 | return data; |
d142d6be | 124 | } |
d142d6be RZ |
125 | |
126 | /* End of common functions shared by usbmisc drivers*/ | |
127 | ||
8e22978c | 128 | static int ci_hdrc_imx_probe(struct platform_device *pdev) |
15302800 | 129 | { |
8e22978c AS |
130 | struct ci_hdrc_imx_data *data; |
131 | struct ci_hdrc_platform_data pdata = { | |
c844d6c8 | 132 | .name = dev_name(&pdev->dev), |
f6a3b3a3 | 133 | .capoffset = DEF_CAPOFFSET, |
0ef877a4 | 134 | .flags = CI_HDRC_SET_NON_ZERO_TTHA, |
f6a3b3a3 | 135 | }; |
15302800 | 136 | int ret; |
1071055e PC |
137 | const struct of_device_id *of_id = |
138 | of_match_device(ci_hdrc_imx_dt_ids, &pdev->dev); | |
139 | const struct ci_hdrc_imx_platform_flag *imx_platform_flag = of_id->data; | |
15302800 RZ |
140 | |
141 | data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); | |
73529828 | 142 | if (!data) |
15302800 | 143 | return -ENOMEM; |
15302800 | 144 | |
05986ba9 SH |
145 | data->usbmisc_data = usbmisc_get_init_data(&pdev->dev); |
146 | if (IS_ERR(data->usbmisc_data)) | |
147 | return PTR_ERR(data->usbmisc_data); | |
148 | ||
15302800 RZ |
149 | data->clk = devm_clk_get(&pdev->dev, NULL); |
150 | if (IS_ERR(data->clk)) { | |
151 | dev_err(&pdev->dev, | |
152 | "Failed to get clock, err=%ld\n", PTR_ERR(data->clk)); | |
153 | return PTR_ERR(data->clk); | |
154 | } | |
155 | ||
156 | ret = clk_prepare_enable(data->clk); | |
157 | if (ret) { | |
158 | dev_err(&pdev->dev, | |
159 | "Failed to prepare or enable clock, err=%d\n", ret); | |
160 | return ret; | |
161 | } | |
162 | ||
046916de | 163 | data->phy = devm_usb_get_phy_by_phandle(&pdev->dev, "fsl,usbphy", 0); |
af59a8b1 PC |
164 | if (IS_ERR(data->phy)) { |
165 | ret = PTR_ERR(data->phy); | |
16853d7b MP |
166 | /* Return -EINVAL if no usbphy is available */ |
167 | if (ret == -ENODEV) | |
168 | ret = -EINVAL; | |
ea1418b5 | 169 | goto err_clk; |
15302800 RZ |
170 | } |
171 | ||
ef44cb42 | 172 | pdata.usb_phy = data->phy; |
56040087 | 173 | pdata.flags |= imx_platform_flag->flags; |
e14db48d PC |
174 | if (pdata.flags & CI_HDRC_SUPPORTS_RUNTIME_PM) |
175 | data->supports_runtime_pm = true; | |
1071055e | 176 | |
e1fd7341 | 177 | ret = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); |
22d9d8e8 RK |
178 | if (ret) |
179 | goto err_clk; | |
d142d6be | 180 | |
a4cf1b14 PC |
181 | ret = imx_usbmisc_init(data->usbmisc_data); |
182 | if (ret) { | |
183 | dev_err(&pdev->dev, "usbmisc init failed, ret=%d\n", ret); | |
184 | goto err_clk; | |
d142d6be RZ |
185 | } |
186 | ||
8e22978c | 187 | data->ci_pdev = ci_hdrc_add_device(&pdev->dev, |
15302800 | 188 | pdev->resource, pdev->num_resources, |
f6a3b3a3 | 189 | &pdata); |
770719df FE |
190 | if (IS_ERR(data->ci_pdev)) { |
191 | ret = PTR_ERR(data->ci_pdev); | |
15302800 RZ |
192 | dev_err(&pdev->dev, |
193 | "Can't register ci_hdrc platform device, err=%d\n", | |
194 | ret); | |
af59a8b1 | 195 | goto err_clk; |
15302800 RZ |
196 | } |
197 | ||
a4cf1b14 PC |
198 | ret = imx_usbmisc_init_post(data->usbmisc_data); |
199 | if (ret) { | |
200 | dev_err(&pdev->dev, "usbmisc post failed, ret=%d\n", ret); | |
201 | goto disable_device; | |
a0685330 MG |
202 | } |
203 | ||
15302800 RZ |
204 | platform_set_drvdata(pdev, data); |
205 | ||
e14db48d PC |
206 | if (data->supports_runtime_pm) { |
207 | pm_runtime_set_active(&pdev->dev); | |
208 | pm_runtime_enable(&pdev->dev); | |
209 | } | |
15302800 | 210 | |
6d653110 PC |
211 | device_set_wakeup_capable(&pdev->dev, true); |
212 | ||
15302800 RZ |
213 | return 0; |
214 | ||
770719df | 215 | disable_device: |
8e22978c | 216 | ci_hdrc_remove_device(data->ci_pdev); |
ea1418b5 | 217 | err_clk: |
15302800 RZ |
218 | clk_disable_unprepare(data->clk); |
219 | return ret; | |
220 | } | |
221 | ||
8e22978c | 222 | static int ci_hdrc_imx_remove(struct platform_device *pdev) |
15302800 | 223 | { |
8e22978c | 224 | struct ci_hdrc_imx_data *data = platform_get_drvdata(pdev); |
15302800 | 225 | |
e14db48d PC |
226 | if (data->supports_runtime_pm) { |
227 | pm_runtime_get_sync(&pdev->dev); | |
228 | pm_runtime_disable(&pdev->dev); | |
229 | pm_runtime_put_noidle(&pdev->dev); | |
230 | } | |
8e22978c | 231 | ci_hdrc_remove_device(data->ci_pdev); |
15302800 RZ |
232 | clk_disable_unprepare(data->clk); |
233 | ||
15302800 RZ |
234 | return 0; |
235 | } | |
236 | ||
e14db48d | 237 | #ifdef CONFIG_PM |
2558c1f5 PC |
238 | static int imx_controller_suspend(struct device *dev) |
239 | { | |
240 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); | |
241 | ||
242 | dev_dbg(dev, "at %s\n", __func__); | |
243 | ||
244 | clk_disable_unprepare(data->clk); | |
e14db48d | 245 | data->in_lpm = true; |
2558c1f5 PC |
246 | |
247 | return 0; | |
248 | } | |
249 | ||
250 | static int imx_controller_resume(struct device *dev) | |
251 | { | |
252 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); | |
e14db48d | 253 | int ret = 0; |
2558c1f5 PC |
254 | |
255 | dev_dbg(dev, "at %s\n", __func__); | |
256 | ||
e14db48d PC |
257 | if (!data->in_lpm) { |
258 | WARN_ON(1); | |
259 | return 0; | |
260 | } | |
261 | ||
262 | ret = clk_prepare_enable(data->clk); | |
263 | if (ret) | |
264 | return ret; | |
265 | ||
266 | data->in_lpm = false; | |
267 | ||
268 | ret = imx_usbmisc_set_wakeup(data->usbmisc_data, false); | |
269 | if (ret) { | |
270 | dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n", ret); | |
271 | goto clk_disable; | |
272 | } | |
273 | ||
274 | return 0; | |
275 | ||
276 | clk_disable: | |
277 | clk_disable_unprepare(data->clk); | |
278 | return ret; | |
2558c1f5 PC |
279 | } |
280 | ||
e14db48d | 281 | #ifdef CONFIG_PM_SLEEP |
2558c1f5 PC |
282 | static int ci_hdrc_imx_suspend(struct device *dev) |
283 | { | |
6d653110 PC |
284 | int ret; |
285 | ||
e14db48d PC |
286 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); |
287 | ||
288 | if (data->in_lpm) | |
289 | /* The core's suspend doesn't run */ | |
290 | return 0; | |
291 | ||
6d653110 PC |
292 | if (device_may_wakeup(dev)) { |
293 | ret = imx_usbmisc_set_wakeup(data->usbmisc_data, true); | |
294 | if (ret) { | |
295 | dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n", | |
296 | ret); | |
297 | return ret; | |
298 | } | |
299 | } | |
300 | ||
2558c1f5 PC |
301 | return imx_controller_suspend(dev); |
302 | } | |
303 | ||
304 | static int ci_hdrc_imx_resume(struct device *dev) | |
305 | { | |
e14db48d PC |
306 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); |
307 | int ret; | |
308 | ||
309 | ret = imx_controller_resume(dev); | |
310 | if (!ret && data->supports_runtime_pm) { | |
311 | pm_runtime_disable(dev); | |
312 | pm_runtime_set_active(dev); | |
313 | pm_runtime_enable(dev); | |
314 | } | |
315 | ||
316 | return ret; | |
2558c1f5 PC |
317 | } |
318 | #endif /* CONFIG_PM_SLEEP */ | |
319 | ||
e14db48d PC |
320 | static int ci_hdrc_imx_runtime_suspend(struct device *dev) |
321 | { | |
322 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); | |
323 | int ret; | |
324 | ||
325 | if (data->in_lpm) { | |
326 | WARN_ON(1); | |
327 | return 0; | |
328 | } | |
329 | ||
330 | ret = imx_usbmisc_set_wakeup(data->usbmisc_data, true); | |
331 | if (ret) { | |
332 | dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n", ret); | |
333 | return ret; | |
334 | } | |
335 | ||
336 | return imx_controller_suspend(dev); | |
337 | } | |
338 | ||
339 | static int ci_hdrc_imx_runtime_resume(struct device *dev) | |
340 | { | |
341 | return imx_controller_resume(dev); | |
342 | } | |
343 | ||
344 | #endif /* CONFIG_PM */ | |
345 | ||
2558c1f5 PC |
346 | static const struct dev_pm_ops ci_hdrc_imx_pm_ops = { |
347 | SET_SYSTEM_SLEEP_PM_OPS(ci_hdrc_imx_suspend, ci_hdrc_imx_resume) | |
e14db48d PC |
348 | SET_RUNTIME_PM_OPS(ci_hdrc_imx_runtime_suspend, |
349 | ci_hdrc_imx_runtime_resume, NULL) | |
2558c1f5 | 350 | }; |
8e22978c AS |
351 | static struct platform_driver ci_hdrc_imx_driver = { |
352 | .probe = ci_hdrc_imx_probe, | |
353 | .remove = ci_hdrc_imx_remove, | |
15302800 RZ |
354 | .driver = { |
355 | .name = "imx_usb", | |
8e22978c | 356 | .of_match_table = ci_hdrc_imx_dt_ids, |
2558c1f5 | 357 | .pm = &ci_hdrc_imx_pm_ops, |
15302800 RZ |
358 | }, |
359 | }; | |
360 | ||
8e22978c | 361 | module_platform_driver(ci_hdrc_imx_driver); |
15302800 RZ |
362 | |
363 | MODULE_ALIAS("platform:imx-usb"); | |
364 | MODULE_LICENSE("GPL v2"); | |
8e22978c | 365 | MODULE_DESCRIPTION("CI HDRC i.MX USB binding"); |
15302800 RZ |
366 | MODULE_AUTHOR("Marek Vasut <marex@denx.de>"); |
367 | MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>"); |