Commit | Line | Data |
---|---|---|
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 | ||
52fe568e PC |
59 | static const struct ci_hdrc_imx_platform_flag imx6ul_usb_data = { |
60 | .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | | |
61 | CI_HDRC_TURN_VBUS_EARLY_ON, | |
62 | }; | |
63 | ||
5cb377c5 PC |
64 | static const struct ci_hdrc_imx_platform_flag imx7d_usb_data = { |
65 | .flags = CI_HDRC_SUPPORTS_RUNTIME_PM, | |
66 | }; | |
67 | ||
1071055e PC |
68 | static const struct of_device_id ci_hdrc_imx_dt_ids[] = { |
69 | { .compatible = "fsl,imx28-usb", .data = &imx28_usb_data}, | |
70 | { .compatible = "fsl,imx27-usb", .data = &imx27_usb_data}, | |
e14db48d PC |
71 | { .compatible = "fsl,imx6q-usb", .data = &imx6q_usb_data}, |
72 | { .compatible = "fsl,imx6sl-usb", .data = &imx6sl_usb_data}, | |
8315b77d | 73 | { .compatible = "fsl,imx6sx-usb", .data = &imx6sx_usb_data}, |
52fe568e | 74 | { .compatible = "fsl,imx6ul-usb", .data = &imx6ul_usb_data}, |
5cb377c5 | 75 | { .compatible = "fsl,imx7d-usb", .data = &imx7d_usb_data}, |
1071055e PC |
76 | { /* sentinel */ } |
77 | }; | |
78 | MODULE_DEVICE_TABLE(of, ci_hdrc_imx_dt_ids); | |
79 | ||
8e22978c | 80 | struct ci_hdrc_imx_data { |
15302800 RZ |
81 | struct usb_phy *phy; |
82 | struct platform_device *ci_pdev; | |
83 | struct clk *clk; | |
05986ba9 | 84 | struct imx_usbmisc_data *usbmisc_data; |
e14db48d PC |
85 | bool supports_runtime_pm; |
86 | bool in_lpm; | |
ae3e57ae PC |
87 | /* SoC before i.mx6 (except imx23/imx28) needs three clks */ |
88 | bool need_three_clks; | |
89 | struct clk *clk_ipg; | |
90 | struct clk *clk_ahb; | |
91 | struct clk *clk_per; | |
92 | /* --------------------------------- */ | |
15302800 RZ |
93 | }; |
94 | ||
d142d6be RZ |
95 | /* Common functions shared by usbmisc drivers */ |
96 | ||
05986ba9 | 97 | static struct imx_usbmisc_data *usbmisc_get_init_data(struct device *dev) |
d142d6be | 98 | { |
f40017e0 | 99 | struct platform_device *misc_pdev; |
d142d6be RZ |
100 | struct device_node *np = dev->of_node; |
101 | struct of_phandle_args args; | |
05986ba9 | 102 | struct imx_usbmisc_data *data; |
d142d6be RZ |
103 | int ret; |
104 | ||
05986ba9 SH |
105 | /* |
106 | * In case the fsl,usbmisc property is not present this device doesn't | |
107 | * need usbmisc. Return NULL (which is no error here) | |
108 | */ | |
109 | if (!of_get_property(np, "fsl,usbmisc", NULL)) | |
110 | return NULL; | |
111 | ||
112 | data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); | |
113 | if (!data) | |
114 | return ERR_PTR(-ENOMEM); | |
d142d6be RZ |
115 | |
116 | ret = of_parse_phandle_with_args(np, "fsl,usbmisc", "#index-cells", | |
117 | 0, &args); | |
118 | if (ret) { | |
119 | dev_err(dev, "Failed to parse property fsl,usbmisc, errno %d\n", | |
120 | ret); | |
05986ba9 | 121 | return ERR_PTR(ret); |
d142d6be | 122 | } |
05986ba9 SH |
123 | |
124 | data->index = args.args[0]; | |
f40017e0 SA |
125 | |
126 | misc_pdev = of_find_device_by_node(args.np); | |
d142d6be RZ |
127 | of_node_put(args.np); |
128 | ||
ef12da91 | 129 | if (!misc_pdev || !platform_get_drvdata(misc_pdev)) |
f40017e0 SA |
130 | return ERR_PTR(-EPROBE_DEFER); |
131 | ||
132 | data->dev = &misc_pdev->dev; | |
133 | ||
d142d6be | 134 | if (of_find_property(np, "disable-over-current", NULL)) |
05986ba9 | 135 | data->disable_oc = 1; |
d142d6be | 136 | |
a0685330 | 137 | if (of_find_property(np, "external-vbus-divider", NULL)) |
05986ba9 | 138 | data->evdo = 1; |
a0685330 | 139 | |
05986ba9 | 140 | return data; |
d142d6be | 141 | } |
d142d6be RZ |
142 | |
143 | /* End of common functions shared by usbmisc drivers*/ | |
ae3e57ae PC |
144 | static int imx_get_clks(struct device *dev) |
145 | { | |
146 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); | |
147 | int ret = 0; | |
148 | ||
149 | data->clk_ipg = devm_clk_get(dev, "ipg"); | |
150 | if (IS_ERR(data->clk_ipg)) { | |
151 | /* If the platform only needs one clocks */ | |
152 | data->clk = devm_clk_get(dev, NULL); | |
153 | if (IS_ERR(data->clk)) { | |
154 | ret = PTR_ERR(data->clk); | |
155 | dev_err(dev, | |
156 | "Failed to get clks, err=%ld,%ld\n", | |
157 | PTR_ERR(data->clk), PTR_ERR(data->clk_ipg)); | |
158 | return ret; | |
159 | } | |
160 | return ret; | |
161 | } | |
162 | ||
163 | data->clk_ahb = devm_clk_get(dev, "ahb"); | |
164 | if (IS_ERR(data->clk_ahb)) { | |
165 | ret = PTR_ERR(data->clk_ahb); | |
166 | dev_err(dev, | |
167 | "Failed to get ahb clock, err=%d\n", ret); | |
168 | return ret; | |
169 | } | |
170 | ||
171 | data->clk_per = devm_clk_get(dev, "per"); | |
172 | if (IS_ERR(data->clk_per)) { | |
173 | ret = PTR_ERR(data->clk_per); | |
174 | dev_err(dev, | |
175 | "Failed to get per clock, err=%d\n", ret); | |
176 | return ret; | |
177 | } | |
178 | ||
179 | data->need_three_clks = true; | |
180 | return ret; | |
181 | } | |
182 | ||
183 | static int imx_prepare_enable_clks(struct device *dev) | |
184 | { | |
185 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); | |
186 | int ret = 0; | |
187 | ||
188 | if (data->need_three_clks) { | |
189 | ret = clk_prepare_enable(data->clk_ipg); | |
190 | if (ret) { | |
191 | dev_err(dev, | |
192 | "Failed to prepare/enable ipg clk, err=%d\n", | |
193 | ret); | |
194 | return ret; | |
195 | } | |
196 | ||
197 | ret = clk_prepare_enable(data->clk_ahb); | |
198 | if (ret) { | |
199 | dev_err(dev, | |
200 | "Failed to prepare/enable ahb clk, err=%d\n", | |
201 | ret); | |
202 | clk_disable_unprepare(data->clk_ipg); | |
203 | return ret; | |
204 | } | |
205 | ||
206 | ret = clk_prepare_enable(data->clk_per); | |
207 | if (ret) { | |
208 | dev_err(dev, | |
209 | "Failed to prepare/enable per clk, err=%d\n", | |
210 | ret); | |
211 | clk_disable_unprepare(data->clk_ahb); | |
212 | clk_disable_unprepare(data->clk_ipg); | |
213 | return ret; | |
214 | } | |
215 | } else { | |
216 | ret = clk_prepare_enable(data->clk); | |
217 | if (ret) { | |
218 | dev_err(dev, | |
219 | "Failed to prepare/enable clk, err=%d\n", | |
220 | ret); | |
221 | return ret; | |
222 | } | |
223 | } | |
224 | ||
225 | return ret; | |
226 | } | |
227 | ||
228 | static void imx_disable_unprepare_clks(struct device *dev) | |
229 | { | |
230 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); | |
231 | ||
232 | if (data->need_three_clks) { | |
233 | clk_disable_unprepare(data->clk_per); | |
234 | clk_disable_unprepare(data->clk_ahb); | |
235 | clk_disable_unprepare(data->clk_ipg); | |
236 | } else { | |
237 | clk_disable_unprepare(data->clk); | |
238 | } | |
239 | } | |
d142d6be | 240 | |
8e22978c | 241 | static int ci_hdrc_imx_probe(struct platform_device *pdev) |
15302800 | 242 | { |
8e22978c AS |
243 | struct ci_hdrc_imx_data *data; |
244 | struct ci_hdrc_platform_data pdata = { | |
c844d6c8 | 245 | .name = dev_name(&pdev->dev), |
f6a3b3a3 | 246 | .capoffset = DEF_CAPOFFSET, |
0ef877a4 | 247 | .flags = CI_HDRC_SET_NON_ZERO_TTHA, |
f6a3b3a3 | 248 | }; |
15302800 | 249 | int ret; |
6f51bc34 LC |
250 | const struct of_device_id *of_id; |
251 | const struct ci_hdrc_imx_platform_flag *imx_platform_flag; | |
252 | ||
253 | of_id = of_match_device(ci_hdrc_imx_dt_ids, &pdev->dev); | |
254 | if (!of_id) | |
255 | return -ENODEV; | |
256 | ||
257 | imx_platform_flag = of_id->data; | |
15302800 RZ |
258 | |
259 | data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); | |
73529828 | 260 | if (!data) |
15302800 | 261 | return -ENOMEM; |
15302800 | 262 | |
ae3e57ae | 263 | platform_set_drvdata(pdev, data); |
05986ba9 SH |
264 | data->usbmisc_data = usbmisc_get_init_data(&pdev->dev); |
265 | if (IS_ERR(data->usbmisc_data)) | |
266 | return PTR_ERR(data->usbmisc_data); | |
267 | ||
ae3e57ae PC |
268 | ret = imx_get_clks(&pdev->dev); |
269 | if (ret) | |
270 | return ret; | |
15302800 | 271 | |
ae3e57ae PC |
272 | ret = imx_prepare_enable_clks(&pdev->dev); |
273 | if (ret) | |
15302800 | 274 | return ret; |
15302800 | 275 | |
046916de | 276 | data->phy = devm_usb_get_phy_by_phandle(&pdev->dev, "fsl,usbphy", 0); |
af59a8b1 PC |
277 | if (IS_ERR(data->phy)) { |
278 | ret = PTR_ERR(data->phy); | |
16853d7b MP |
279 | /* Return -EINVAL if no usbphy is available */ |
280 | if (ret == -ENODEV) | |
281 | ret = -EINVAL; | |
ea1418b5 | 282 | goto err_clk; |
15302800 RZ |
283 | } |
284 | ||
ef44cb42 | 285 | pdata.usb_phy = data->phy; |
56040087 | 286 | pdata.flags |= imx_platform_flag->flags; |
e14db48d PC |
287 | if (pdata.flags & CI_HDRC_SUPPORTS_RUNTIME_PM) |
288 | data->supports_runtime_pm = true; | |
1071055e | 289 | |
e1fd7341 | 290 | ret = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); |
22d9d8e8 RK |
291 | if (ret) |
292 | goto err_clk; | |
d142d6be | 293 | |
a4cf1b14 PC |
294 | ret = imx_usbmisc_init(data->usbmisc_data); |
295 | if (ret) { | |
296 | dev_err(&pdev->dev, "usbmisc init failed, ret=%d\n", ret); | |
297 | goto err_clk; | |
d142d6be RZ |
298 | } |
299 | ||
8e22978c | 300 | data->ci_pdev = ci_hdrc_add_device(&pdev->dev, |
15302800 | 301 | pdev->resource, pdev->num_resources, |
f6a3b3a3 | 302 | &pdata); |
770719df FE |
303 | if (IS_ERR(data->ci_pdev)) { |
304 | ret = PTR_ERR(data->ci_pdev); | |
15302800 RZ |
305 | dev_err(&pdev->dev, |
306 | "Can't register ci_hdrc platform device, err=%d\n", | |
307 | ret); | |
af59a8b1 | 308 | goto err_clk; |
15302800 RZ |
309 | } |
310 | ||
a4cf1b14 PC |
311 | ret = imx_usbmisc_init_post(data->usbmisc_data); |
312 | if (ret) { | |
313 | dev_err(&pdev->dev, "usbmisc post failed, ret=%d\n", ret); | |
314 | goto disable_device; | |
a0685330 MG |
315 | } |
316 | ||
e14db48d PC |
317 | if (data->supports_runtime_pm) { |
318 | pm_runtime_set_active(&pdev->dev); | |
319 | pm_runtime_enable(&pdev->dev); | |
320 | } | |
15302800 | 321 | |
6d653110 PC |
322 | device_set_wakeup_capable(&pdev->dev, true); |
323 | ||
15302800 RZ |
324 | return 0; |
325 | ||
770719df | 326 | disable_device: |
8e22978c | 327 | ci_hdrc_remove_device(data->ci_pdev); |
ea1418b5 | 328 | err_clk: |
ae3e57ae | 329 | imx_disable_unprepare_clks(&pdev->dev); |
15302800 RZ |
330 | return ret; |
331 | } | |
332 | ||
8e22978c | 333 | static int ci_hdrc_imx_remove(struct platform_device *pdev) |
15302800 | 334 | { |
8e22978c | 335 | struct ci_hdrc_imx_data *data = platform_get_drvdata(pdev); |
15302800 | 336 | |
e14db48d PC |
337 | if (data->supports_runtime_pm) { |
338 | pm_runtime_get_sync(&pdev->dev); | |
339 | pm_runtime_disable(&pdev->dev); | |
340 | pm_runtime_put_noidle(&pdev->dev); | |
341 | } | |
8e22978c | 342 | ci_hdrc_remove_device(data->ci_pdev); |
ae3e57ae | 343 | imx_disable_unprepare_clks(&pdev->dev); |
15302800 | 344 | |
15302800 RZ |
345 | return 0; |
346 | } | |
347 | ||
b09b5224 AF |
348 | static void ci_hdrc_imx_shutdown(struct platform_device *pdev) |
349 | { | |
350 | ci_hdrc_imx_remove(pdev); | |
351 | } | |
352 | ||
e14db48d | 353 | #ifdef CONFIG_PM |
2558c1f5 PC |
354 | static int imx_controller_suspend(struct device *dev) |
355 | { | |
356 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); | |
357 | ||
358 | dev_dbg(dev, "at %s\n", __func__); | |
359 | ||
ae3e57ae | 360 | imx_disable_unprepare_clks(dev); |
e14db48d | 361 | data->in_lpm = true; |
2558c1f5 PC |
362 | |
363 | return 0; | |
364 | } | |
365 | ||
366 | static int imx_controller_resume(struct device *dev) | |
367 | { | |
368 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); | |
e14db48d | 369 | int ret = 0; |
2558c1f5 PC |
370 | |
371 | dev_dbg(dev, "at %s\n", __func__); | |
372 | ||
e14db48d PC |
373 | if (!data->in_lpm) { |
374 | WARN_ON(1); | |
375 | return 0; | |
376 | } | |
377 | ||
ae3e57ae | 378 | ret = imx_prepare_enable_clks(dev); |
e14db48d PC |
379 | if (ret) |
380 | return ret; | |
381 | ||
382 | data->in_lpm = false; | |
383 | ||
384 | ret = imx_usbmisc_set_wakeup(data->usbmisc_data, false); | |
385 | if (ret) { | |
386 | dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n", ret); | |
387 | goto clk_disable; | |
388 | } | |
389 | ||
390 | return 0; | |
391 | ||
392 | clk_disable: | |
ae3e57ae | 393 | imx_disable_unprepare_clks(dev); |
e14db48d | 394 | return ret; |
2558c1f5 PC |
395 | } |
396 | ||
e14db48d | 397 | #ifdef CONFIG_PM_SLEEP |
2558c1f5 PC |
398 | static int ci_hdrc_imx_suspend(struct device *dev) |
399 | { | |
6d653110 PC |
400 | int ret; |
401 | ||
e14db48d PC |
402 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); |
403 | ||
404 | if (data->in_lpm) | |
405 | /* The core's suspend doesn't run */ | |
406 | return 0; | |
407 | ||
6d653110 PC |
408 | if (device_may_wakeup(dev)) { |
409 | ret = imx_usbmisc_set_wakeup(data->usbmisc_data, true); | |
410 | if (ret) { | |
411 | dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n", | |
412 | ret); | |
413 | return ret; | |
414 | } | |
415 | } | |
416 | ||
2558c1f5 PC |
417 | return imx_controller_suspend(dev); |
418 | } | |
419 | ||
420 | static int ci_hdrc_imx_resume(struct device *dev) | |
421 | { | |
e14db48d PC |
422 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); |
423 | int ret; | |
424 | ||
425 | ret = imx_controller_resume(dev); | |
426 | if (!ret && data->supports_runtime_pm) { | |
427 | pm_runtime_disable(dev); | |
428 | pm_runtime_set_active(dev); | |
429 | pm_runtime_enable(dev); | |
430 | } | |
431 | ||
432 | return ret; | |
2558c1f5 PC |
433 | } |
434 | #endif /* CONFIG_PM_SLEEP */ | |
435 | ||
e14db48d PC |
436 | static int ci_hdrc_imx_runtime_suspend(struct device *dev) |
437 | { | |
438 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); | |
439 | int ret; | |
440 | ||
441 | if (data->in_lpm) { | |
442 | WARN_ON(1); | |
443 | return 0; | |
444 | } | |
445 | ||
446 | ret = imx_usbmisc_set_wakeup(data->usbmisc_data, true); | |
447 | if (ret) { | |
448 | dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n", ret); | |
449 | return ret; | |
450 | } | |
451 | ||
452 | return imx_controller_suspend(dev); | |
453 | } | |
454 | ||
455 | static int ci_hdrc_imx_runtime_resume(struct device *dev) | |
456 | { | |
457 | return imx_controller_resume(dev); | |
458 | } | |
459 | ||
460 | #endif /* CONFIG_PM */ | |
461 | ||
2558c1f5 PC |
462 | static const struct dev_pm_ops ci_hdrc_imx_pm_ops = { |
463 | SET_SYSTEM_SLEEP_PM_OPS(ci_hdrc_imx_suspend, ci_hdrc_imx_resume) | |
e14db48d PC |
464 | SET_RUNTIME_PM_OPS(ci_hdrc_imx_runtime_suspend, |
465 | ci_hdrc_imx_runtime_resume, NULL) | |
2558c1f5 | 466 | }; |
8e22978c AS |
467 | static struct platform_driver ci_hdrc_imx_driver = { |
468 | .probe = ci_hdrc_imx_probe, | |
469 | .remove = ci_hdrc_imx_remove, | |
b09b5224 | 470 | .shutdown = ci_hdrc_imx_shutdown, |
15302800 RZ |
471 | .driver = { |
472 | .name = "imx_usb", | |
8e22978c | 473 | .of_match_table = ci_hdrc_imx_dt_ids, |
2558c1f5 | 474 | .pm = &ci_hdrc_imx_pm_ops, |
15302800 RZ |
475 | }, |
476 | }; | |
477 | ||
8e22978c | 478 | module_platform_driver(ci_hdrc_imx_driver); |
15302800 RZ |
479 | |
480 | MODULE_ALIAS("platform:imx-usb"); | |
481 | MODULE_LICENSE("GPL v2"); | |
8e22978c | 482 | MODULE_DESCRIPTION("CI HDRC i.MX USB binding"); |
15302800 RZ |
483 | MODULE_AUTHOR("Marek Vasut <marex@denx.de>"); |
484 | MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>"); |