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 | ||
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 | |
a0685330 | 143 | if (of_find_property(np, "external-vbus-divider", NULL)) |
05986ba9 | 144 | data->evdo = 1; |
a0685330 | 145 | |
05986ba9 | 146 | return data; |
d142d6be | 147 | } |
d142d6be RZ |
148 | |
149 | /* End of common functions shared by usbmisc drivers*/ | |
ae3e57ae PC |
150 | static int imx_get_clks(struct device *dev) |
151 | { | |
152 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); | |
153 | int ret = 0; | |
154 | ||
155 | data->clk_ipg = devm_clk_get(dev, "ipg"); | |
156 | if (IS_ERR(data->clk_ipg)) { | |
157 | /* If the platform only needs one clocks */ | |
158 | data->clk = devm_clk_get(dev, NULL); | |
159 | if (IS_ERR(data->clk)) { | |
160 | ret = PTR_ERR(data->clk); | |
161 | dev_err(dev, | |
162 | "Failed to get clks, err=%ld,%ld\n", | |
163 | PTR_ERR(data->clk), PTR_ERR(data->clk_ipg)); | |
164 | return ret; | |
165 | } | |
166 | return ret; | |
167 | } | |
168 | ||
169 | data->clk_ahb = devm_clk_get(dev, "ahb"); | |
170 | if (IS_ERR(data->clk_ahb)) { | |
171 | ret = PTR_ERR(data->clk_ahb); | |
172 | dev_err(dev, | |
173 | "Failed to get ahb clock, err=%d\n", ret); | |
174 | return ret; | |
175 | } | |
176 | ||
177 | data->clk_per = devm_clk_get(dev, "per"); | |
178 | if (IS_ERR(data->clk_per)) { | |
179 | ret = PTR_ERR(data->clk_per); | |
180 | dev_err(dev, | |
181 | "Failed to get per clock, err=%d\n", ret); | |
182 | return ret; | |
183 | } | |
184 | ||
185 | data->need_three_clks = true; | |
186 | return ret; | |
187 | } | |
188 | ||
189 | static int imx_prepare_enable_clks(struct device *dev) | |
190 | { | |
191 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); | |
192 | int ret = 0; | |
193 | ||
194 | if (data->need_three_clks) { | |
195 | ret = clk_prepare_enable(data->clk_ipg); | |
196 | if (ret) { | |
197 | dev_err(dev, | |
198 | "Failed to prepare/enable ipg clk, err=%d\n", | |
199 | ret); | |
200 | return ret; | |
201 | } | |
202 | ||
203 | ret = clk_prepare_enable(data->clk_ahb); | |
204 | if (ret) { | |
205 | dev_err(dev, | |
206 | "Failed to prepare/enable ahb clk, err=%d\n", | |
207 | ret); | |
208 | clk_disable_unprepare(data->clk_ipg); | |
209 | return ret; | |
210 | } | |
211 | ||
212 | ret = clk_prepare_enable(data->clk_per); | |
213 | if (ret) { | |
214 | dev_err(dev, | |
215 | "Failed to prepare/enable per clk, err=%d\n", | |
216 | ret); | |
217 | clk_disable_unprepare(data->clk_ahb); | |
218 | clk_disable_unprepare(data->clk_ipg); | |
219 | return ret; | |
220 | } | |
221 | } else { | |
222 | ret = clk_prepare_enable(data->clk); | |
223 | if (ret) { | |
224 | dev_err(dev, | |
225 | "Failed to prepare/enable clk, err=%d\n", | |
226 | ret); | |
227 | return ret; | |
228 | } | |
229 | } | |
230 | ||
231 | return ret; | |
232 | } | |
233 | ||
234 | static void imx_disable_unprepare_clks(struct device *dev) | |
235 | { | |
236 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); | |
237 | ||
238 | if (data->need_three_clks) { | |
239 | clk_disable_unprepare(data->clk_per); | |
240 | clk_disable_unprepare(data->clk_ahb); | |
241 | clk_disable_unprepare(data->clk_ipg); | |
242 | } else { | |
243 | clk_disable_unprepare(data->clk); | |
244 | } | |
245 | } | |
d142d6be | 246 | |
8e22978c | 247 | static int ci_hdrc_imx_probe(struct platform_device *pdev) |
15302800 | 248 | { |
8e22978c AS |
249 | struct ci_hdrc_imx_data *data; |
250 | struct ci_hdrc_platform_data pdata = { | |
c844d6c8 | 251 | .name = dev_name(&pdev->dev), |
f6a3b3a3 | 252 | .capoffset = DEF_CAPOFFSET, |
f6a3b3a3 | 253 | }; |
15302800 | 254 | int ret; |
6f51bc34 LC |
255 | const struct of_device_id *of_id; |
256 | const struct ci_hdrc_imx_platform_flag *imx_platform_flag; | |
257 | ||
258 | of_id = of_match_device(ci_hdrc_imx_dt_ids, &pdev->dev); | |
259 | if (!of_id) | |
260 | return -ENODEV; | |
261 | ||
262 | imx_platform_flag = of_id->data; | |
15302800 RZ |
263 | |
264 | data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); | |
73529828 | 265 | if (!data) |
15302800 | 266 | return -ENOMEM; |
15302800 | 267 | |
ae3e57ae | 268 | platform_set_drvdata(pdev, data); |
05986ba9 SH |
269 | data->usbmisc_data = usbmisc_get_init_data(&pdev->dev); |
270 | if (IS_ERR(data->usbmisc_data)) | |
271 | return PTR_ERR(data->usbmisc_data); | |
272 | ||
ae3e57ae PC |
273 | ret = imx_get_clks(&pdev->dev); |
274 | if (ret) | |
275 | return ret; | |
15302800 | 276 | |
ae3e57ae PC |
277 | ret = imx_prepare_enable_clks(&pdev->dev); |
278 | if (ret) | |
15302800 | 279 | return ret; |
15302800 | 280 | |
046916de | 281 | data->phy = devm_usb_get_phy_by_phandle(&pdev->dev, "fsl,usbphy", 0); |
af59a8b1 PC |
282 | if (IS_ERR(data->phy)) { |
283 | ret = PTR_ERR(data->phy); | |
16853d7b MP |
284 | /* Return -EINVAL if no usbphy is available */ |
285 | if (ret == -ENODEV) | |
286 | ret = -EINVAL; | |
ea1418b5 | 287 | goto err_clk; |
15302800 RZ |
288 | } |
289 | ||
ef44cb42 | 290 | pdata.usb_phy = data->phy; |
56040087 | 291 | pdata.flags |= imx_platform_flag->flags; |
e14db48d PC |
292 | if (pdata.flags & CI_HDRC_SUPPORTS_RUNTIME_PM) |
293 | data->supports_runtime_pm = true; | |
1071055e | 294 | |
e1fd7341 | 295 | ret = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); |
22d9d8e8 RK |
296 | if (ret) |
297 | goto err_clk; | |
d142d6be | 298 | |
a4cf1b14 PC |
299 | ret = imx_usbmisc_init(data->usbmisc_data); |
300 | if (ret) { | |
301 | dev_err(&pdev->dev, "usbmisc init failed, ret=%d\n", ret); | |
302 | goto err_clk; | |
d142d6be RZ |
303 | } |
304 | ||
8e22978c | 305 | data->ci_pdev = ci_hdrc_add_device(&pdev->dev, |
15302800 | 306 | pdev->resource, pdev->num_resources, |
f6a3b3a3 | 307 | &pdata); |
770719df FE |
308 | if (IS_ERR(data->ci_pdev)) { |
309 | ret = PTR_ERR(data->ci_pdev); | |
d3d8425a SA |
310 | if (ret != -EPROBE_DEFER) |
311 | dev_err(&pdev->dev, | |
312 | "ci_hdrc_add_device failed, err=%d\n", ret); | |
af59a8b1 | 313 | goto err_clk; |
15302800 RZ |
314 | } |
315 | ||
a4cf1b14 PC |
316 | ret = imx_usbmisc_init_post(data->usbmisc_data); |
317 | if (ret) { | |
318 | dev_err(&pdev->dev, "usbmisc post failed, ret=%d\n", ret); | |
319 | goto disable_device; | |
a0685330 MG |
320 | } |
321 | ||
e14db48d PC |
322 | if (data->supports_runtime_pm) { |
323 | pm_runtime_set_active(&pdev->dev); | |
324 | pm_runtime_enable(&pdev->dev); | |
325 | } | |
15302800 | 326 | |
6d653110 PC |
327 | device_set_wakeup_capable(&pdev->dev, true); |
328 | ||
15302800 RZ |
329 | return 0; |
330 | ||
770719df | 331 | disable_device: |
8e22978c | 332 | ci_hdrc_remove_device(data->ci_pdev); |
ea1418b5 | 333 | err_clk: |
ae3e57ae | 334 | imx_disable_unprepare_clks(&pdev->dev); |
15302800 RZ |
335 | return ret; |
336 | } | |
337 | ||
8e22978c | 338 | static int ci_hdrc_imx_remove(struct platform_device *pdev) |
15302800 | 339 | { |
8e22978c | 340 | struct ci_hdrc_imx_data *data = platform_get_drvdata(pdev); |
15302800 | 341 | |
e14db48d PC |
342 | if (data->supports_runtime_pm) { |
343 | pm_runtime_get_sync(&pdev->dev); | |
344 | pm_runtime_disable(&pdev->dev); | |
345 | pm_runtime_put_noidle(&pdev->dev); | |
346 | } | |
8e22978c | 347 | ci_hdrc_remove_device(data->ci_pdev); |
ae3e57ae | 348 | imx_disable_unprepare_clks(&pdev->dev); |
15302800 | 349 | |
15302800 RZ |
350 | return 0; |
351 | } | |
352 | ||
b09b5224 AF |
353 | static void ci_hdrc_imx_shutdown(struct platform_device *pdev) |
354 | { | |
355 | ci_hdrc_imx_remove(pdev); | |
356 | } | |
357 | ||
e14db48d | 358 | #ifdef CONFIG_PM |
2558c1f5 PC |
359 | static int imx_controller_suspend(struct device *dev) |
360 | { | |
361 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); | |
362 | ||
363 | dev_dbg(dev, "at %s\n", __func__); | |
364 | ||
ae3e57ae | 365 | imx_disable_unprepare_clks(dev); |
e14db48d | 366 | data->in_lpm = true; |
2558c1f5 PC |
367 | |
368 | return 0; | |
369 | } | |
370 | ||
371 | static int imx_controller_resume(struct device *dev) | |
372 | { | |
373 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); | |
e14db48d | 374 | int ret = 0; |
2558c1f5 PC |
375 | |
376 | dev_dbg(dev, "at %s\n", __func__); | |
377 | ||
e14db48d PC |
378 | if (!data->in_lpm) { |
379 | WARN_ON(1); | |
380 | return 0; | |
381 | } | |
382 | ||
ae3e57ae | 383 | ret = imx_prepare_enable_clks(dev); |
e14db48d PC |
384 | if (ret) |
385 | return ret; | |
386 | ||
387 | data->in_lpm = false; | |
388 | ||
389 | ret = imx_usbmisc_set_wakeup(data->usbmisc_data, false); | |
390 | if (ret) { | |
391 | dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n", ret); | |
392 | goto clk_disable; | |
393 | } | |
394 | ||
395 | return 0; | |
396 | ||
397 | clk_disable: | |
ae3e57ae | 398 | imx_disable_unprepare_clks(dev); |
e14db48d | 399 | return ret; |
2558c1f5 PC |
400 | } |
401 | ||
e14db48d | 402 | #ifdef CONFIG_PM_SLEEP |
2558c1f5 PC |
403 | static int ci_hdrc_imx_suspend(struct device *dev) |
404 | { | |
6d653110 PC |
405 | int ret; |
406 | ||
e14db48d PC |
407 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); |
408 | ||
409 | if (data->in_lpm) | |
410 | /* The core's suspend doesn't run */ | |
411 | return 0; | |
412 | ||
6d653110 PC |
413 | if (device_may_wakeup(dev)) { |
414 | ret = imx_usbmisc_set_wakeup(data->usbmisc_data, true); | |
415 | if (ret) { | |
416 | dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n", | |
417 | ret); | |
418 | return ret; | |
419 | } | |
420 | } | |
421 | ||
2558c1f5 PC |
422 | return imx_controller_suspend(dev); |
423 | } | |
424 | ||
425 | static int ci_hdrc_imx_resume(struct device *dev) | |
426 | { | |
e14db48d PC |
427 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); |
428 | int ret; | |
429 | ||
430 | ret = imx_controller_resume(dev); | |
431 | if (!ret && data->supports_runtime_pm) { | |
432 | pm_runtime_disable(dev); | |
433 | pm_runtime_set_active(dev); | |
434 | pm_runtime_enable(dev); | |
435 | } | |
436 | ||
437 | return ret; | |
2558c1f5 PC |
438 | } |
439 | #endif /* CONFIG_PM_SLEEP */ | |
440 | ||
e14db48d PC |
441 | static int ci_hdrc_imx_runtime_suspend(struct device *dev) |
442 | { | |
443 | struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); | |
444 | int ret; | |
445 | ||
446 | if (data->in_lpm) { | |
447 | WARN_ON(1); | |
448 | return 0; | |
449 | } | |
450 | ||
451 | ret = imx_usbmisc_set_wakeup(data->usbmisc_data, true); | |
452 | if (ret) { | |
453 | dev_err(dev, "usbmisc set_wakeup failed, ret=%d\n", ret); | |
454 | return ret; | |
455 | } | |
456 | ||
457 | return imx_controller_suspend(dev); | |
458 | } | |
459 | ||
460 | static int ci_hdrc_imx_runtime_resume(struct device *dev) | |
461 | { | |
462 | return imx_controller_resume(dev); | |
463 | } | |
464 | ||
465 | #endif /* CONFIG_PM */ | |
466 | ||
2558c1f5 PC |
467 | static const struct dev_pm_ops ci_hdrc_imx_pm_ops = { |
468 | SET_SYSTEM_SLEEP_PM_OPS(ci_hdrc_imx_suspend, ci_hdrc_imx_resume) | |
e14db48d PC |
469 | SET_RUNTIME_PM_OPS(ci_hdrc_imx_runtime_suspend, |
470 | ci_hdrc_imx_runtime_resume, NULL) | |
2558c1f5 | 471 | }; |
8e22978c AS |
472 | static struct platform_driver ci_hdrc_imx_driver = { |
473 | .probe = ci_hdrc_imx_probe, | |
474 | .remove = ci_hdrc_imx_remove, | |
b09b5224 | 475 | .shutdown = ci_hdrc_imx_shutdown, |
15302800 RZ |
476 | .driver = { |
477 | .name = "imx_usb", | |
8e22978c | 478 | .of_match_table = ci_hdrc_imx_dt_ids, |
2558c1f5 | 479 | .pm = &ci_hdrc_imx_pm_ops, |
15302800 RZ |
480 | }, |
481 | }; | |
482 | ||
8e22978c | 483 | module_platform_driver(ci_hdrc_imx_driver); |
15302800 RZ |
484 | |
485 | MODULE_ALIAS("platform:imx-usb"); | |
486 | MODULE_LICENSE("GPL v2"); | |
8e22978c | 487 | MODULE_DESCRIPTION("CI HDRC i.MX USB binding"); |
15302800 RZ |
488 | MODULE_AUTHOR("Marek Vasut <marex@denx.de>"); |
489 | MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>"); |