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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 | ||
81345722 SW |
31 | static const struct ci_hdrc_imx_platform_flag imx23_usb_data = { |
32 | .flags = CI_HDRC_TURN_VBUS_EARLY_ON | | |
33 | CI_HDRC_DISABLE_STREAMING, | |
34 | }; | |
35 | ||
1071055e | 36 | static const struct ci_hdrc_imx_platform_flag imx27_usb_data = { |
0ef877a4 | 37 | CI_HDRC_DISABLE_STREAMING, |
1071055e PC |
38 | }; |
39 | ||
40 | static const struct ci_hdrc_imx_platform_flag imx28_usb_data = { | |
6adb9b7b | 41 | .flags = CI_HDRC_IMX28_WRITE_FIX | |
0ef877a4 PC |
42 | CI_HDRC_TURN_VBUS_EARLY_ON | |
43 | CI_HDRC_DISABLE_STREAMING, | |
1071055e PC |
44 | }; |
45 | ||
e14db48d | 46 | static const struct ci_hdrc_imx_platform_flag imx6q_usb_data = { |
6adb9b7b | 47 | .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | |
0ef877a4 PC |
48 | CI_HDRC_TURN_VBUS_EARLY_ON | |
49 | CI_HDRC_DISABLE_STREAMING, | |
e14db48d PC |
50 | }; |
51 | ||
52 | static const struct ci_hdrc_imx_platform_flag imx6sl_usb_data = { | |
6adb9b7b | 53 | .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | |
0ef877a4 PC |
54 | CI_HDRC_TURN_VBUS_EARLY_ON | |
55 | CI_HDRC_DISABLE_HOST_STREAMING, | |
e14db48d PC |
56 | }; |
57 | ||
58 | static const struct ci_hdrc_imx_platform_flag imx6sx_usb_data = { | |
6adb9b7b | 59 | .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | |
0ef877a4 PC |
60 | CI_HDRC_TURN_VBUS_EARLY_ON | |
61 | CI_HDRC_DISABLE_HOST_STREAMING, | |
e14db48d PC |
62 | }; |
63 | ||
52fe568e PC |
64 | static const struct ci_hdrc_imx_platform_flag imx6ul_usb_data = { |
65 | .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | | |
66 | CI_HDRC_TURN_VBUS_EARLY_ON, | |
67 | }; | |
68 | ||
5cb377c5 PC |
69 | static const struct ci_hdrc_imx_platform_flag imx7d_usb_data = { |
70 | .flags = CI_HDRC_SUPPORTS_RUNTIME_PM, | |
71 | }; | |
72 | ||
1071055e | 73 | static const struct of_device_id ci_hdrc_imx_dt_ids[] = { |
81345722 | 74 | { .compatible = "fsl,imx23-usb", .data = &imx23_usb_data}, |
1071055e PC |
75 | { .compatible = "fsl,imx28-usb", .data = &imx28_usb_data}, |
76 | { .compatible = "fsl,imx27-usb", .data = &imx27_usb_data}, | |
e14db48d PC |
77 | { .compatible = "fsl,imx6q-usb", .data = &imx6q_usb_data}, |
78 | { .compatible = "fsl,imx6sl-usb", .data = &imx6sl_usb_data}, | |
8315b77d | 79 | { .compatible = "fsl,imx6sx-usb", .data = &imx6sx_usb_data}, |
52fe568e | 80 | { .compatible = "fsl,imx6ul-usb", .data = &imx6ul_usb_data}, |
5cb377c5 | 81 | { .compatible = "fsl,imx7d-usb", .data = &imx7d_usb_data}, |
1071055e PC |
82 | { /* sentinel */ } |
83 | }; | |
84 | MODULE_DEVICE_TABLE(of, ci_hdrc_imx_dt_ids); | |
85 | ||
8e22978c | 86 | struct ci_hdrc_imx_data { |
15302800 RZ |
87 | struct usb_phy *phy; |
88 | struct platform_device *ci_pdev; | |
89 | struct clk *clk; | |
05986ba9 | 90 | struct imx_usbmisc_data *usbmisc_data; |
e14db48d PC |
91 | bool supports_runtime_pm; |
92 | bool in_lpm; | |
ae3e57ae PC |
93 | /* SoC before i.mx6 (except imx23/imx28) needs three clks */ |
94 | bool need_three_clks; | |
95 | struct clk *clk_ipg; | |
96 | struct clk *clk_ahb; | |
97 | struct clk *clk_per; | |
98 | /* --------------------------------- */ | |
15302800 RZ |
99 | }; |
100 | ||
d142d6be RZ |
101 | /* Common functions shared by usbmisc drivers */ |
102 | ||
05986ba9 | 103 | static struct imx_usbmisc_data *usbmisc_get_init_data(struct device *dev) |
d142d6be | 104 | { |
f40017e0 | 105 | struct platform_device *misc_pdev; |
d142d6be RZ |
106 | struct device_node *np = dev->of_node; |
107 | struct of_phandle_args args; | |
05986ba9 | 108 | struct imx_usbmisc_data *data; |
d142d6be RZ |
109 | int ret; |
110 | ||
05986ba9 SH |
111 | /* |
112 | * In case the fsl,usbmisc property is not present this device doesn't | |
113 | * need usbmisc. Return NULL (which is no error here) | |
114 | */ | |
115 | if (!of_get_property(np, "fsl,usbmisc", NULL)) | |
116 | return NULL; | |
117 | ||
118 | data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); | |
119 | if (!data) | |
120 | return ERR_PTR(-ENOMEM); | |
d142d6be RZ |
121 | |
122 | ret = of_parse_phandle_with_args(np, "fsl,usbmisc", "#index-cells", | |
123 | 0, &args); | |
124 | if (ret) { | |
125 | dev_err(dev, "Failed to parse property fsl,usbmisc, errno %d\n", | |
126 | ret); | |
05986ba9 | 127 | return ERR_PTR(ret); |
d142d6be | 128 | } |
05986ba9 SH |
129 | |
130 | data->index = args.args[0]; | |
f40017e0 SA |
131 | |
132 | misc_pdev = of_find_device_by_node(args.np); | |
d142d6be RZ |
133 | of_node_put(args.np); |
134 | ||
ef12da91 | 135 | if (!misc_pdev || !platform_get_drvdata(misc_pdev)) |
f40017e0 SA |
136 | return ERR_PTR(-EPROBE_DEFER); |
137 | ||
138 | data->dev = &misc_pdev->dev; | |
139 | ||
d142d6be | 140 | if (of_find_property(np, "disable-over-current", NULL)) |
05986ba9 | 141 | data->disable_oc = 1; |
d142d6be | 142 | |
9dba516e LJ |
143 | if (of_find_property(np, "over-current-active-high", NULL)) |
144 | data->oc_polarity = 1; | |
145 | ||
a0685330 | 146 | if (of_find_property(np, "external-vbus-divider", NULL)) |
05986ba9 | 147 | data->evdo = 1; |
a0685330 | 148 | |
05986ba9 | 149 | return data; |
d142d6be | 150 | } |
d142d6be RZ |
151 | |
152 | /* End of common functions shared by usbmisc drivers*/ | |
ae3e57ae PC |
153 | static int imx_get_clks(struct device *dev) |
154 | { | |
155 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); | |
156 | int ret = 0; | |
157 | ||
158 | data->clk_ipg = devm_clk_get(dev, "ipg"); | |
159 | if (IS_ERR(data->clk_ipg)) { | |
160 | /* If the platform only needs one clocks */ | |
161 | data->clk = devm_clk_get(dev, NULL); | |
162 | if (IS_ERR(data->clk)) { | |
163 | ret = PTR_ERR(data->clk); | |
164 | dev_err(dev, | |
165 | "Failed to get clks, err=%ld,%ld\n", | |
166 | PTR_ERR(data->clk), PTR_ERR(data->clk_ipg)); | |
167 | return ret; | |
168 | } | |
169 | return ret; | |
170 | } | |
171 | ||
172 | data->clk_ahb = devm_clk_get(dev, "ahb"); | |
173 | if (IS_ERR(data->clk_ahb)) { | |
174 | ret = PTR_ERR(data->clk_ahb); | |
175 | dev_err(dev, | |
176 | "Failed to get ahb clock, err=%d\n", ret); | |
177 | return ret; | |
178 | } | |
179 | ||
180 | data->clk_per = devm_clk_get(dev, "per"); | |
181 | if (IS_ERR(data->clk_per)) { | |
182 | ret = PTR_ERR(data->clk_per); | |
183 | dev_err(dev, | |
184 | "Failed to get per clock, err=%d\n", ret); | |
185 | return ret; | |
186 | } | |
187 | ||
188 | data->need_three_clks = true; | |
189 | return ret; | |
190 | } | |
191 | ||
192 | static int imx_prepare_enable_clks(struct device *dev) | |
193 | { | |
194 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); | |
195 | int ret = 0; | |
196 | ||
197 | if (data->need_three_clks) { | |
198 | ret = clk_prepare_enable(data->clk_ipg); | |
199 | if (ret) { | |
200 | dev_err(dev, | |
201 | "Failed to prepare/enable ipg clk, err=%d\n", | |
202 | ret); | |
203 | return ret; | |
204 | } | |
205 | ||
206 | ret = clk_prepare_enable(data->clk_ahb); | |
207 | if (ret) { | |
208 | dev_err(dev, | |
209 | "Failed to prepare/enable ahb clk, err=%d\n", | |
210 | ret); | |
211 | clk_disable_unprepare(data->clk_ipg); | |
212 | return ret; | |
213 | } | |
214 | ||
215 | ret = clk_prepare_enable(data->clk_per); | |
216 | if (ret) { | |
217 | dev_err(dev, | |
218 | "Failed to prepare/enable per clk, err=%d\n", | |
219 | ret); | |
220 | clk_disable_unprepare(data->clk_ahb); | |
221 | clk_disable_unprepare(data->clk_ipg); | |
222 | return ret; | |
223 | } | |
224 | } else { | |
225 | ret = clk_prepare_enable(data->clk); | |
226 | if (ret) { | |
227 | dev_err(dev, | |
228 | "Failed to prepare/enable clk, err=%d\n", | |
229 | ret); | |
230 | return ret; | |
231 | } | |
232 | } | |
233 | ||
234 | return ret; | |
235 | } | |
236 | ||
237 | static void imx_disable_unprepare_clks(struct device *dev) | |
238 | { | |
239 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); | |
240 | ||
241 | if (data->need_three_clks) { | |
242 | clk_disable_unprepare(data->clk_per); | |
243 | clk_disable_unprepare(data->clk_ahb); | |
244 | clk_disable_unprepare(data->clk_ipg); | |
245 | } else { | |
246 | clk_disable_unprepare(data->clk); | |
247 | } | |
248 | } | |
d142d6be | 249 | |
8e22978c | 250 | static int ci_hdrc_imx_probe(struct platform_device *pdev) |
15302800 | 251 | { |
8e22978c AS |
252 | struct ci_hdrc_imx_data *data; |
253 | struct ci_hdrc_platform_data pdata = { | |
c844d6c8 | 254 | .name = dev_name(&pdev->dev), |
f6a3b3a3 | 255 | .capoffset = DEF_CAPOFFSET, |
f6a3b3a3 | 256 | }; |
15302800 | 257 | int ret; |
6f51bc34 LC |
258 | const struct of_device_id *of_id; |
259 | const struct ci_hdrc_imx_platform_flag *imx_platform_flag; | |
260 | ||
261 | of_id = of_match_device(ci_hdrc_imx_dt_ids, &pdev->dev); | |
262 | if (!of_id) | |
263 | return -ENODEV; | |
264 | ||
265 | imx_platform_flag = of_id->data; | |
15302800 RZ |
266 | |
267 | data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); | |
73529828 | 268 | if (!data) |
15302800 | 269 | return -ENOMEM; |
15302800 | 270 | |
ae3e57ae | 271 | platform_set_drvdata(pdev, data); |
05986ba9 SH |
272 | data->usbmisc_data = usbmisc_get_init_data(&pdev->dev); |
273 | if (IS_ERR(data->usbmisc_data)) | |
274 | return PTR_ERR(data->usbmisc_data); | |
275 | ||
ae3e57ae PC |
276 | ret = imx_get_clks(&pdev->dev); |
277 | if (ret) | |
278 | return ret; | |
15302800 | 279 | |
ae3e57ae PC |
280 | ret = imx_prepare_enable_clks(&pdev->dev); |
281 | if (ret) | |
15302800 | 282 | return ret; |
15302800 | 283 | |
046916de | 284 | data->phy = devm_usb_get_phy_by_phandle(&pdev->dev, "fsl,usbphy", 0); |
af59a8b1 PC |
285 | if (IS_ERR(data->phy)) { |
286 | ret = PTR_ERR(data->phy); | |
16853d7b MP |
287 | /* Return -EINVAL if no usbphy is available */ |
288 | if (ret == -ENODEV) | |
289 | ret = -EINVAL; | |
ea1418b5 | 290 | goto err_clk; |
15302800 RZ |
291 | } |
292 | ||
ef44cb42 | 293 | pdata.usb_phy = data->phy; |
56040087 | 294 | pdata.flags |= imx_platform_flag->flags; |
e14db48d PC |
295 | if (pdata.flags & CI_HDRC_SUPPORTS_RUNTIME_PM) |
296 | data->supports_runtime_pm = true; | |
1071055e | 297 | |
a4cf1b14 PC |
298 | ret = imx_usbmisc_init(data->usbmisc_data); |
299 | if (ret) { | |
300 | dev_err(&pdev->dev, "usbmisc init failed, ret=%d\n", ret); | |
301 | goto err_clk; | |
d142d6be RZ |
302 | } |
303 | ||
8e22978c | 304 | data->ci_pdev = ci_hdrc_add_device(&pdev->dev, |
15302800 | 305 | pdev->resource, pdev->num_resources, |
f6a3b3a3 | 306 | &pdata); |
770719df FE |
307 | if (IS_ERR(data->ci_pdev)) { |
308 | ret = PTR_ERR(data->ci_pdev); | |
d3d8425a SA |
309 | if (ret != -EPROBE_DEFER) |
310 | dev_err(&pdev->dev, | |
311 | "ci_hdrc_add_device failed, err=%d\n", ret); | |
af59a8b1 | 312 | goto err_clk; |
15302800 RZ |
313 | } |
314 | ||
a4cf1b14 PC |
315 | ret = imx_usbmisc_init_post(data->usbmisc_data); |
316 | if (ret) { | |
317 | dev_err(&pdev->dev, "usbmisc post failed, ret=%d\n", ret); | |
318 | goto disable_device; | |
a0685330 MG |
319 | } |
320 | ||
e14db48d PC |
321 | if (data->supports_runtime_pm) { |
322 | pm_runtime_set_active(&pdev->dev); | |
323 | pm_runtime_enable(&pdev->dev); | |
324 | } | |
15302800 | 325 | |
6d653110 PC |
326 | device_set_wakeup_capable(&pdev->dev, true); |
327 | ||
15302800 RZ |
328 | return 0; |
329 | ||
770719df | 330 | disable_device: |
8e22978c | 331 | ci_hdrc_remove_device(data->ci_pdev); |
ea1418b5 | 332 | err_clk: |
ae3e57ae | 333 | imx_disable_unprepare_clks(&pdev->dev); |
15302800 RZ |
334 | return ret; |
335 | } | |
336 | ||
8e22978c | 337 | static int ci_hdrc_imx_remove(struct platform_device *pdev) |
15302800 | 338 | { |
8e22978c | 339 | struct ci_hdrc_imx_data *data = platform_get_drvdata(pdev); |
15302800 | 340 | |
e14db48d PC |
341 | if (data->supports_runtime_pm) { |
342 | pm_runtime_get_sync(&pdev->dev); | |
343 | pm_runtime_disable(&pdev->dev); | |
344 | pm_runtime_put_noidle(&pdev->dev); | |
345 | } | |
8e22978c | 346 | ci_hdrc_remove_device(data->ci_pdev); |
ae3e57ae | 347 | imx_disable_unprepare_clks(&pdev->dev); |
15302800 | 348 | |
15302800 RZ |
349 | return 0; |
350 | } | |
351 | ||
b09b5224 AF |
352 | static void ci_hdrc_imx_shutdown(struct platform_device *pdev) |
353 | { | |
354 | ci_hdrc_imx_remove(pdev); | |
355 | } | |
356 | ||
e14db48d | 357 | #ifdef CONFIG_PM |
2558c1f5 PC |
358 | static int imx_controller_suspend(struct device *dev) |
359 | { | |
360 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); | |
361 | ||
362 | dev_dbg(dev, "at %s\n", __func__); | |
363 | ||
ae3e57ae | 364 | imx_disable_unprepare_clks(dev); |
e14db48d | 365 | data->in_lpm = true; |
2558c1f5 PC |
366 | |
367 | return 0; | |
368 | } | |
369 | ||
370 | static int imx_controller_resume(struct device *dev) | |
371 | { | |
372 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); | |
e14db48d | 373 | int ret = 0; |
2558c1f5 PC |
374 | |
375 | dev_dbg(dev, "at %s\n", __func__); | |
376 | ||
e14db48d PC |
377 | if (!data->in_lpm) { |
378 | WARN_ON(1); | |
379 | return 0; | |
380 | } | |
381 | ||
ae3e57ae | 382 | ret = imx_prepare_enable_clks(dev); |
e14db48d PC |
383 | if (ret) |
384 | return ret; | |
385 | ||
386 | data->in_lpm = false; | |
387 | ||
388 | ret = imx_usbmisc_set_wakeup(data->usbmisc_data, false); | |
389 | if (ret) { | |
390 | dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n", ret); | |
391 | goto clk_disable; | |
392 | } | |
393 | ||
394 | return 0; | |
395 | ||
396 | clk_disable: | |
ae3e57ae | 397 | imx_disable_unprepare_clks(dev); |
e14db48d | 398 | return ret; |
2558c1f5 PC |
399 | } |
400 | ||
e14db48d | 401 | #ifdef CONFIG_PM_SLEEP |
2558c1f5 PC |
402 | static int ci_hdrc_imx_suspend(struct device *dev) |
403 | { | |
6d653110 PC |
404 | int ret; |
405 | ||
e14db48d PC |
406 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); |
407 | ||
408 | if (data->in_lpm) | |
409 | /* The core's suspend doesn't run */ | |
410 | return 0; | |
411 | ||
6d653110 PC |
412 | if (device_may_wakeup(dev)) { |
413 | ret = imx_usbmisc_set_wakeup(data->usbmisc_data, true); | |
414 | if (ret) { | |
415 | dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n", | |
416 | ret); | |
417 | return ret; | |
418 | } | |
419 | } | |
420 | ||
2558c1f5 PC |
421 | return imx_controller_suspend(dev); |
422 | } | |
423 | ||
424 | static int ci_hdrc_imx_resume(struct device *dev) | |
425 | { | |
e14db48d PC |
426 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); |
427 | int ret; | |
428 | ||
429 | ret = imx_controller_resume(dev); | |
430 | if (!ret && data->supports_runtime_pm) { | |
431 | pm_runtime_disable(dev); | |
432 | pm_runtime_set_active(dev); | |
433 | pm_runtime_enable(dev); | |
434 | } | |
435 | ||
436 | return ret; | |
2558c1f5 PC |
437 | } |
438 | #endif /* CONFIG_PM_SLEEP */ | |
439 | ||
e14db48d PC |
440 | static int ci_hdrc_imx_runtime_suspend(struct device *dev) |
441 | { | |
442 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); | |
443 | int ret; | |
444 | ||
445 | if (data->in_lpm) { | |
446 | WARN_ON(1); | |
447 | return 0; | |
448 | } | |
449 | ||
450 | ret = imx_usbmisc_set_wakeup(data->usbmisc_data, true); | |
451 | if (ret) { | |
452 | dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n", ret); | |
453 | return ret; | |
454 | } | |
455 | ||
456 | return imx_controller_suspend(dev); | |
457 | } | |
458 | ||
459 | static int ci_hdrc_imx_runtime_resume(struct device *dev) | |
460 | { | |
461 | return imx_controller_resume(dev); | |
462 | } | |
463 | ||
464 | #endif /* CONFIG_PM */ | |
465 | ||
2558c1f5 PC |
466 | static const struct dev_pm_ops ci_hdrc_imx_pm_ops = { |
467 | SET_SYSTEM_SLEEP_PM_OPS(ci_hdrc_imx_suspend, ci_hdrc_imx_resume) | |
e14db48d PC |
468 | SET_RUNTIME_PM_OPS(ci_hdrc_imx_runtime_suspend, |
469 | ci_hdrc_imx_runtime_resume, NULL) | |
2558c1f5 | 470 | }; |
8e22978c AS |
471 | static struct platform_driver ci_hdrc_imx_driver = { |
472 | .probe = ci_hdrc_imx_probe, | |
473 | .remove = ci_hdrc_imx_remove, | |
b09b5224 | 474 | .shutdown = ci_hdrc_imx_shutdown, |
15302800 RZ |
475 | .driver = { |
476 | .name = "imx_usb", | |
8e22978c | 477 | .of_match_table = ci_hdrc_imx_dt_ids, |
2558c1f5 | 478 | .pm = &ci_hdrc_imx_pm_ops, |
15302800 RZ |
479 | }, |
480 | }; | |
481 | ||
8e22978c | 482 | module_platform_driver(ci_hdrc_imx_driver); |
15302800 RZ |
483 | |
484 | MODULE_ALIAS("platform:imx-usb"); | |
485 | MODULE_LICENSE("GPL v2"); | |
8e22978c | 486 | MODULE_DESCRIPTION("CI HDRC i.MX USB binding"); |
15302800 RZ |
487 | MODULE_AUTHOR("Marek Vasut <marex@denx.de>"); |
488 | MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>"); |