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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> | |
d13631bb | 21 | #include <linux/usb/of.h> |
15302800 | 22 | #include <linux/clk.h> |
15302800 RZ |
23 | |
24 | #include "ci.h" | |
8e22978c | 25 | #include "ci_hdrc_imx.h" |
15302800 | 26 | |
1071055e PC |
27 | struct ci_hdrc_imx_platform_flag { |
28 | unsigned int flags; | |
e14db48d | 29 | bool runtime_pm; |
1071055e PC |
30 | }; |
31 | ||
81345722 SW |
32 | static const struct ci_hdrc_imx_platform_flag imx23_usb_data = { |
33 | .flags = CI_HDRC_TURN_VBUS_EARLY_ON | | |
34 | CI_HDRC_DISABLE_STREAMING, | |
35 | }; | |
36 | ||
1071055e | 37 | static const struct ci_hdrc_imx_platform_flag imx27_usb_data = { |
0ef877a4 | 38 | CI_HDRC_DISABLE_STREAMING, |
1071055e PC |
39 | }; |
40 | ||
41 | static const struct ci_hdrc_imx_platform_flag imx28_usb_data = { | |
6adb9b7b | 42 | .flags = CI_HDRC_IMX28_WRITE_FIX | |
0ef877a4 PC |
43 | CI_HDRC_TURN_VBUS_EARLY_ON | |
44 | CI_HDRC_DISABLE_STREAMING, | |
1071055e PC |
45 | }; |
46 | ||
e14db48d | 47 | static const struct ci_hdrc_imx_platform_flag imx6q_usb_data = { |
6adb9b7b | 48 | .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | |
0ef877a4 PC |
49 | CI_HDRC_TURN_VBUS_EARLY_ON | |
50 | CI_HDRC_DISABLE_STREAMING, | |
e14db48d PC |
51 | }; |
52 | ||
53 | static const struct ci_hdrc_imx_platform_flag imx6sl_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 | ||
59 | static const struct ci_hdrc_imx_platform_flag imx6sx_usb_data = { | |
6adb9b7b | 60 | .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | |
0ef877a4 PC |
61 | CI_HDRC_TURN_VBUS_EARLY_ON | |
62 | CI_HDRC_DISABLE_HOST_STREAMING, | |
e14db48d PC |
63 | }; |
64 | ||
52fe568e PC |
65 | static const struct ci_hdrc_imx_platform_flag imx6ul_usb_data = { |
66 | .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | | |
67 | CI_HDRC_TURN_VBUS_EARLY_ON, | |
68 | }; | |
69 | ||
5cb377c5 PC |
70 | static const struct ci_hdrc_imx_platform_flag imx7d_usb_data = { |
71 | .flags = CI_HDRC_SUPPORTS_RUNTIME_PM, | |
72 | }; | |
73 | ||
1071055e | 74 | static const struct of_device_id ci_hdrc_imx_dt_ids[] = { |
81345722 | 75 | { .compatible = "fsl,imx23-usb", .data = &imx23_usb_data}, |
1071055e PC |
76 | { .compatible = "fsl,imx28-usb", .data = &imx28_usb_data}, |
77 | { .compatible = "fsl,imx27-usb", .data = &imx27_usb_data}, | |
e14db48d PC |
78 | { .compatible = "fsl,imx6q-usb", .data = &imx6q_usb_data}, |
79 | { .compatible = "fsl,imx6sl-usb", .data = &imx6sl_usb_data}, | |
8315b77d | 80 | { .compatible = "fsl,imx6sx-usb", .data = &imx6sx_usb_data}, |
52fe568e | 81 | { .compatible = "fsl,imx6ul-usb", .data = &imx6ul_usb_data}, |
5cb377c5 | 82 | { .compatible = "fsl,imx7d-usb", .data = &imx7d_usb_data}, |
1071055e PC |
83 | { /* sentinel */ } |
84 | }; | |
85 | MODULE_DEVICE_TABLE(of, ci_hdrc_imx_dt_ids); | |
86 | ||
8e22978c | 87 | struct ci_hdrc_imx_data { |
15302800 RZ |
88 | struct usb_phy *phy; |
89 | struct platform_device *ci_pdev; | |
90 | struct clk *clk; | |
05986ba9 | 91 | struct imx_usbmisc_data *usbmisc_data; |
e14db48d PC |
92 | bool supports_runtime_pm; |
93 | bool in_lpm; | |
ae3e57ae PC |
94 | /* SoC before i.mx6 (except imx23/imx28) needs three clks */ |
95 | bool need_three_clks; | |
96 | struct clk *clk_ipg; | |
97 | struct clk *clk_ahb; | |
98 | struct clk *clk_per; | |
99 | /* --------------------------------- */ | |
15302800 RZ |
100 | }; |
101 | ||
d142d6be RZ |
102 | /* Common functions shared by usbmisc drivers */ |
103 | ||
05986ba9 | 104 | static struct imx_usbmisc_data *usbmisc_get_init_data(struct device *dev) |
d142d6be | 105 | { |
f40017e0 | 106 | struct platform_device *misc_pdev; |
d142d6be RZ |
107 | struct device_node *np = dev->of_node; |
108 | struct of_phandle_args args; | |
05986ba9 | 109 | struct imx_usbmisc_data *data; |
d142d6be RZ |
110 | int ret; |
111 | ||
05986ba9 SH |
112 | /* |
113 | * In case the fsl,usbmisc property is not present this device doesn't | |
114 | * need usbmisc. Return NULL (which is no error here) | |
115 | */ | |
116 | if (!of_get_property(np, "fsl,usbmisc", NULL)) | |
117 | return NULL; | |
118 | ||
119 | data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); | |
120 | if (!data) | |
121 | return ERR_PTR(-ENOMEM); | |
d142d6be RZ |
122 | |
123 | ret = of_parse_phandle_with_args(np, "fsl,usbmisc", "#index-cells", | |
124 | 0, &args); | |
125 | if (ret) { | |
126 | dev_err(dev, "Failed to parse property fsl,usbmisc, errno %d\n", | |
127 | ret); | |
05986ba9 | 128 | return ERR_PTR(ret); |
d142d6be | 129 | } |
05986ba9 SH |
130 | |
131 | data->index = args.args[0]; | |
f40017e0 SA |
132 | |
133 | misc_pdev = of_find_device_by_node(args.np); | |
d142d6be RZ |
134 | of_node_put(args.np); |
135 | ||
ef12da91 | 136 | if (!misc_pdev || !platform_get_drvdata(misc_pdev)) |
f40017e0 SA |
137 | return ERR_PTR(-EPROBE_DEFER); |
138 | ||
139 | data->dev = &misc_pdev->dev; | |
140 | ||
d142d6be | 141 | if (of_find_property(np, "disable-over-current", NULL)) |
05986ba9 | 142 | data->disable_oc = 1; |
d142d6be | 143 | |
9dba516e LJ |
144 | if (of_find_property(np, "over-current-active-high", NULL)) |
145 | data->oc_polarity = 1; | |
146 | ||
a0685330 | 147 | if (of_find_property(np, "external-vbus-divider", NULL)) |
05986ba9 | 148 | data->evdo = 1; |
a0685330 | 149 | |
d13631bb FL |
150 | if (of_usb_get_phy_mode(np) == USBPHY_INTERFACE_MODE_ULPI) |
151 | data->ulpi = 1; | |
152 | ||
05986ba9 | 153 | return data; |
d142d6be | 154 | } |
d142d6be RZ |
155 | |
156 | /* End of common functions shared by usbmisc drivers*/ | |
ae3e57ae PC |
157 | static int imx_get_clks(struct device *dev) |
158 | { | |
159 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); | |
160 | int ret = 0; | |
161 | ||
162 | data->clk_ipg = devm_clk_get(dev, "ipg"); | |
163 | if (IS_ERR(data->clk_ipg)) { | |
164 | /* If the platform only needs one clocks */ | |
165 | data->clk = devm_clk_get(dev, NULL); | |
166 | if (IS_ERR(data->clk)) { | |
167 | ret = PTR_ERR(data->clk); | |
168 | dev_err(dev, | |
169 | "Failed to get clks, err=%ld,%ld\n", | |
170 | PTR_ERR(data->clk), PTR_ERR(data->clk_ipg)); | |
171 | return ret; | |
172 | } | |
173 | return ret; | |
174 | } | |
175 | ||
176 | data->clk_ahb = devm_clk_get(dev, "ahb"); | |
177 | if (IS_ERR(data->clk_ahb)) { | |
178 | ret = PTR_ERR(data->clk_ahb); | |
179 | dev_err(dev, | |
180 | "Failed to get ahb clock, err=%d\n", ret); | |
181 | return ret; | |
182 | } | |
183 | ||
184 | data->clk_per = devm_clk_get(dev, "per"); | |
185 | if (IS_ERR(data->clk_per)) { | |
186 | ret = PTR_ERR(data->clk_per); | |
187 | dev_err(dev, | |
188 | "Failed to get per clock, err=%d\n", ret); | |
189 | return ret; | |
190 | } | |
191 | ||
192 | data->need_three_clks = true; | |
193 | return ret; | |
194 | } | |
195 | ||
196 | static int imx_prepare_enable_clks(struct device *dev) | |
197 | { | |
198 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); | |
199 | int ret = 0; | |
200 | ||
201 | if (data->need_three_clks) { | |
202 | ret = clk_prepare_enable(data->clk_ipg); | |
203 | if (ret) { | |
204 | dev_err(dev, | |
205 | "Failed to prepare/enable ipg clk, err=%d\n", | |
206 | ret); | |
207 | return ret; | |
208 | } | |
209 | ||
210 | ret = clk_prepare_enable(data->clk_ahb); | |
211 | if (ret) { | |
212 | dev_err(dev, | |
213 | "Failed to prepare/enable ahb clk, err=%d\n", | |
214 | ret); | |
215 | clk_disable_unprepare(data->clk_ipg); | |
216 | return ret; | |
217 | } | |
218 | ||
219 | ret = clk_prepare_enable(data->clk_per); | |
220 | if (ret) { | |
221 | dev_err(dev, | |
222 | "Failed to prepare/enable per clk, err=%d\n", | |
223 | ret); | |
224 | clk_disable_unprepare(data->clk_ahb); | |
225 | clk_disable_unprepare(data->clk_ipg); | |
226 | return ret; | |
227 | } | |
228 | } else { | |
229 | ret = clk_prepare_enable(data->clk); | |
230 | if (ret) { | |
231 | dev_err(dev, | |
232 | "Failed to prepare/enable clk, err=%d\n", | |
233 | ret); | |
234 | return ret; | |
235 | } | |
236 | } | |
237 | ||
238 | return ret; | |
239 | } | |
240 | ||
241 | static void imx_disable_unprepare_clks(struct device *dev) | |
242 | { | |
243 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); | |
244 | ||
245 | if (data->need_three_clks) { | |
246 | clk_disable_unprepare(data->clk_per); | |
247 | clk_disable_unprepare(data->clk_ahb); | |
248 | clk_disable_unprepare(data->clk_ipg); | |
249 | } else { | |
250 | clk_disable_unprepare(data->clk); | |
251 | } | |
252 | } | |
d142d6be | 253 | |
8e22978c | 254 | static int ci_hdrc_imx_probe(struct platform_device *pdev) |
15302800 | 255 | { |
8e22978c AS |
256 | struct ci_hdrc_imx_data *data; |
257 | struct ci_hdrc_platform_data pdata = { | |
c844d6c8 | 258 | .name = dev_name(&pdev->dev), |
f6a3b3a3 | 259 | .capoffset = DEF_CAPOFFSET, |
f6a3b3a3 | 260 | }; |
15302800 | 261 | int ret; |
6f51bc34 LC |
262 | const struct of_device_id *of_id; |
263 | const struct ci_hdrc_imx_platform_flag *imx_platform_flag; | |
264 | ||
265 | of_id = of_match_device(ci_hdrc_imx_dt_ids, &pdev->dev); | |
266 | if (!of_id) | |
267 | return -ENODEV; | |
268 | ||
269 | imx_platform_flag = of_id->data; | |
15302800 RZ |
270 | |
271 | data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); | |
73529828 | 272 | if (!data) |
15302800 | 273 | return -ENOMEM; |
15302800 | 274 | |
ae3e57ae | 275 | platform_set_drvdata(pdev, data); |
05986ba9 SH |
276 | data->usbmisc_data = usbmisc_get_init_data(&pdev->dev); |
277 | if (IS_ERR(data->usbmisc_data)) | |
278 | return PTR_ERR(data->usbmisc_data); | |
279 | ||
ae3e57ae PC |
280 | ret = imx_get_clks(&pdev->dev); |
281 | if (ret) | |
282 | return ret; | |
15302800 | 283 | |
ae3e57ae PC |
284 | ret = imx_prepare_enable_clks(&pdev->dev); |
285 | if (ret) | |
15302800 | 286 | return ret; |
15302800 | 287 | |
046916de | 288 | data->phy = devm_usb_get_phy_by_phandle(&pdev->dev, "fsl,usbphy", 0); |
af59a8b1 PC |
289 | if (IS_ERR(data->phy)) { |
290 | ret = PTR_ERR(data->phy); | |
16853d7b MP |
291 | /* Return -EINVAL if no usbphy is available */ |
292 | if (ret == -ENODEV) | |
293 | ret = -EINVAL; | |
ea1418b5 | 294 | goto err_clk; |
15302800 RZ |
295 | } |
296 | ||
ef44cb42 | 297 | pdata.usb_phy = data->phy; |
56040087 | 298 | pdata.flags |= imx_platform_flag->flags; |
e14db48d PC |
299 | if (pdata.flags & CI_HDRC_SUPPORTS_RUNTIME_PM) |
300 | data->supports_runtime_pm = true; | |
1071055e | 301 | |
a4cf1b14 PC |
302 | ret = imx_usbmisc_init(data->usbmisc_data); |
303 | if (ret) { | |
304 | dev_err(&pdev->dev, "usbmisc init failed, ret=%d\n", ret); | |
305 | goto err_clk; | |
d142d6be RZ |
306 | } |
307 | ||
8e22978c | 308 | data->ci_pdev = ci_hdrc_add_device(&pdev->dev, |
15302800 | 309 | pdev->resource, pdev->num_resources, |
f6a3b3a3 | 310 | &pdata); |
770719df FE |
311 | if (IS_ERR(data->ci_pdev)) { |
312 | ret = PTR_ERR(data->ci_pdev); | |
d3d8425a SA |
313 | if (ret != -EPROBE_DEFER) |
314 | dev_err(&pdev->dev, | |
315 | "ci_hdrc_add_device failed, err=%d\n", ret); | |
af59a8b1 | 316 | goto err_clk; |
15302800 RZ |
317 | } |
318 | ||
a4cf1b14 PC |
319 | ret = imx_usbmisc_init_post(data->usbmisc_data); |
320 | if (ret) { | |
321 | dev_err(&pdev->dev, "usbmisc post failed, ret=%d\n", ret); | |
322 | goto disable_device; | |
a0685330 MG |
323 | } |
324 | ||
e14db48d PC |
325 | if (data->supports_runtime_pm) { |
326 | pm_runtime_set_active(&pdev->dev); | |
327 | pm_runtime_enable(&pdev->dev); | |
328 | } | |
15302800 | 329 | |
6d653110 PC |
330 | device_set_wakeup_capable(&pdev->dev, true); |
331 | ||
15302800 RZ |
332 | return 0; |
333 | ||
770719df | 334 | disable_device: |
8e22978c | 335 | ci_hdrc_remove_device(data->ci_pdev); |
ea1418b5 | 336 | err_clk: |
ae3e57ae | 337 | imx_disable_unprepare_clks(&pdev->dev); |
15302800 RZ |
338 | return ret; |
339 | } | |
340 | ||
8e22978c | 341 | static int ci_hdrc_imx_remove(struct platform_device *pdev) |
15302800 | 342 | { |
8e22978c | 343 | struct ci_hdrc_imx_data *data = platform_get_drvdata(pdev); |
15302800 | 344 | |
e14db48d PC |
345 | if (data->supports_runtime_pm) { |
346 | pm_runtime_get_sync(&pdev->dev); | |
347 | pm_runtime_disable(&pdev->dev); | |
348 | pm_runtime_put_noidle(&pdev->dev); | |
349 | } | |
8e22978c | 350 | ci_hdrc_remove_device(data->ci_pdev); |
ae3e57ae | 351 | imx_disable_unprepare_clks(&pdev->dev); |
15302800 | 352 | |
15302800 RZ |
353 | return 0; |
354 | } | |
355 | ||
b09b5224 AF |
356 | static void ci_hdrc_imx_shutdown(struct platform_device *pdev) |
357 | { | |
358 | ci_hdrc_imx_remove(pdev); | |
359 | } | |
360 | ||
e14db48d | 361 | #ifdef CONFIG_PM |
2558c1f5 PC |
362 | static int imx_controller_suspend(struct device *dev) |
363 | { | |
364 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); | |
365 | ||
366 | dev_dbg(dev, "at %s\n", __func__); | |
367 | ||
ae3e57ae | 368 | imx_disable_unprepare_clks(dev); |
e14db48d | 369 | data->in_lpm = true; |
2558c1f5 PC |
370 | |
371 | return 0; | |
372 | } | |
373 | ||
374 | static int imx_controller_resume(struct device *dev) | |
375 | { | |
376 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); | |
e14db48d | 377 | int ret = 0; |
2558c1f5 PC |
378 | |
379 | dev_dbg(dev, "at %s\n", __func__); | |
380 | ||
e14db48d PC |
381 | if (!data->in_lpm) { |
382 | WARN_ON(1); | |
383 | return 0; | |
384 | } | |
385 | ||
ae3e57ae | 386 | ret = imx_prepare_enable_clks(dev); |
e14db48d PC |
387 | if (ret) |
388 | return ret; | |
389 | ||
390 | data->in_lpm = false; | |
391 | ||
392 | ret = imx_usbmisc_set_wakeup(data->usbmisc_data, false); | |
393 | if (ret) { | |
394 | dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n", ret); | |
395 | goto clk_disable; | |
396 | } | |
397 | ||
398 | return 0; | |
399 | ||
400 | clk_disable: | |
ae3e57ae | 401 | imx_disable_unprepare_clks(dev); |
e14db48d | 402 | return ret; |
2558c1f5 PC |
403 | } |
404 | ||
e14db48d | 405 | #ifdef CONFIG_PM_SLEEP |
2558c1f5 PC |
406 | static int ci_hdrc_imx_suspend(struct device *dev) |
407 | { | |
6d653110 PC |
408 | int ret; |
409 | ||
e14db48d PC |
410 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); |
411 | ||
412 | if (data->in_lpm) | |
413 | /* The core's suspend doesn't run */ | |
414 | return 0; | |
415 | ||
6d653110 PC |
416 | if (device_may_wakeup(dev)) { |
417 | ret = imx_usbmisc_set_wakeup(data->usbmisc_data, true); | |
418 | if (ret) { | |
419 | dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n", | |
420 | ret); | |
421 | return ret; | |
422 | } | |
423 | } | |
424 | ||
2558c1f5 PC |
425 | return imx_controller_suspend(dev); |
426 | } | |
427 | ||
428 | static int ci_hdrc_imx_resume(struct device *dev) | |
429 | { | |
e14db48d PC |
430 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); |
431 | int ret; | |
432 | ||
433 | ret = imx_controller_resume(dev); | |
434 | if (!ret && data->supports_runtime_pm) { | |
435 | pm_runtime_disable(dev); | |
436 | pm_runtime_set_active(dev); | |
437 | pm_runtime_enable(dev); | |
438 | } | |
439 | ||
440 | return ret; | |
2558c1f5 PC |
441 | } |
442 | #endif /* CONFIG_PM_SLEEP */ | |
443 | ||
e14db48d PC |
444 | static int ci_hdrc_imx_runtime_suspend(struct device *dev) |
445 | { | |
446 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); | |
447 | int ret; | |
448 | ||
449 | if (data->in_lpm) { | |
450 | WARN_ON(1); | |
451 | return 0; | |
452 | } | |
453 | ||
454 | ret = imx_usbmisc_set_wakeup(data->usbmisc_data, true); | |
455 | if (ret) { | |
456 | dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n", ret); | |
457 | return ret; | |
458 | } | |
459 | ||
460 | return imx_controller_suspend(dev); | |
461 | } | |
462 | ||
463 | static int ci_hdrc_imx_runtime_resume(struct device *dev) | |
464 | { | |
465 | return imx_controller_resume(dev); | |
466 | } | |
467 | ||
468 | #endif /* CONFIG_PM */ | |
469 | ||
2558c1f5 PC |
470 | static const struct dev_pm_ops ci_hdrc_imx_pm_ops = { |
471 | SET_SYSTEM_SLEEP_PM_OPS(ci_hdrc_imx_suspend, ci_hdrc_imx_resume) | |
e14db48d PC |
472 | SET_RUNTIME_PM_OPS(ci_hdrc_imx_runtime_suspend, |
473 | ci_hdrc_imx_runtime_resume, NULL) | |
2558c1f5 | 474 | }; |
8e22978c AS |
475 | static struct platform_driver ci_hdrc_imx_driver = { |
476 | .probe = ci_hdrc_imx_probe, | |
477 | .remove = ci_hdrc_imx_remove, | |
b09b5224 | 478 | .shutdown = ci_hdrc_imx_shutdown, |
15302800 RZ |
479 | .driver = { |
480 | .name = "imx_usb", | |
8e22978c | 481 | .of_match_table = ci_hdrc_imx_dt_ids, |
2558c1f5 | 482 | .pm = &ci_hdrc_imx_pm_ops, |
15302800 RZ |
483 | }, |
484 | }; | |
485 | ||
8e22978c | 486 | module_platform_driver(ci_hdrc_imx_driver); |
15302800 RZ |
487 | |
488 | MODULE_ALIAS("platform:imx-usb"); | |
489 | MODULE_LICENSE("GPL v2"); | |
8e22978c | 490 | MODULE_DESCRIPTION("CI HDRC i.MX USB binding"); |
15302800 RZ |
491 | MODULE_AUTHOR("Marek Vasut <marex@denx.de>"); |
492 | MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>"); |