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Commit | Line | Data |
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f1407d5c KM |
1 | /* |
2 | * Renesas USB driver | |
3 | * | |
4 | * Copyright (C) 2011 Renesas Solutions Corp. | |
5 | * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | |
6 | * | |
7 | * This program is distributed in the hope that it will be useful, | |
8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
10 | * GNU General Public License for more details. | |
11 | * | |
12 | * You should have received a copy of the GNU General Public License | |
13 | * along with this program; if not, write to the Free Software | |
14 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
15 | * | |
16 | */ | |
148e1134 | 17 | #include <linux/err.h> |
8ecef00f | 18 | #include <linux/gpio.h> |
f1407d5c KM |
19 | #include <linux/io.h> |
20 | #include <linux/module.h> | |
b854100e YS |
21 | #include <linux/of_device.h> |
22 | #include <linux/of_gpio.h> | |
f1407d5c KM |
23 | #include <linux/pm_runtime.h> |
24 | #include <linux/slab.h> | |
25 | #include <linux/sysfs.h> | |
cc502bb7 | 26 | #include "common.h" |
8ecef00f | 27 | #include "rcar2.h" |
f1407d5c | 28 | |
233f519d KM |
29 | /* |
30 | * image of renesas_usbhs | |
31 | * | |
32 | * ex) gadget case | |
33 | ||
34 | * mod.c | |
35 | * mod_gadget.c | |
36 | * mod_host.c pipe.c fifo.c | |
37 | * | |
38 | * +-------+ +-----------+ | |
39 | * | pipe0 |------>| fifo pio | | |
40 | * +------------+ +-------+ +-----------+ | |
41 | * | mod_gadget |=====> | pipe1 |--+ | |
42 | * +------------+ +-------+ | +-----------+ | |
43 | * | pipe2 | | +-| fifo dma0 | | |
44 | * +------------+ +-------+ | | +-----------+ | |
45 | * | mod_host | | pipe3 |<-|--+ | |
46 | * +------------+ +-------+ | +-----------+ | |
47 | * | .... | +--->| fifo dma1 | | |
48 | * | .... | +-----------+ | |
49 | */ | |
50 | ||
51 | ||
b002ff6e KM |
52 | #define USBHSF_RUNTIME_PWCTRL (1 << 0) |
53 | ||
54 | /* status */ | |
55 | #define usbhsc_flags_init(p) do {(p)->flags = 0; } while (0) | |
56 | #define usbhsc_flags_set(p, b) ((p)->flags |= (b)) | |
57 | #define usbhsc_flags_clr(p, b) ((p)->flags &= ~(b)) | |
58 | #define usbhsc_flags_has(p, b) ((p)->flags & (b)) | |
59 | ||
f1407d5c KM |
60 | /* |
61 | * platform call back | |
62 | * | |
63 | * renesas usb support platform callback function. | |
64 | * Below macro call it. | |
65 | * if platform doesn't have callback, it return 0 (no error) | |
66 | */ | |
67 | #define usbhs_platform_call(priv, func, args...)\ | |
68 | (!(priv) ? -ENODEV : \ | |
48298206 KM |
69 | !((priv)->pfunc.func) ? 0 : \ |
70 | (priv)->pfunc.func(args)) | |
f1407d5c KM |
71 | |
72 | /* | |
73 | * common functions | |
74 | */ | |
75 | u16 usbhs_read(struct usbhs_priv *priv, u32 reg) | |
76 | { | |
77 | return ioread16(priv->base + reg); | |
78 | } | |
79 | ||
80 | void usbhs_write(struct usbhs_priv *priv, u32 reg, u16 data) | |
81 | { | |
82 | iowrite16(data, priv->base + reg); | |
83 | } | |
84 | ||
85 | void usbhs_bset(struct usbhs_priv *priv, u32 reg, u16 mask, u16 data) | |
86 | { | |
87 | u16 val = usbhs_read(priv, reg); | |
88 | ||
89 | val &= ~mask; | |
90 | val |= data & mask; | |
91 | ||
92 | usbhs_write(priv, reg, val); | |
93 | } | |
94 | ||
206dcc2c KM |
95 | struct usbhs_priv *usbhs_pdev_to_priv(struct platform_device *pdev) |
96 | { | |
97 | return dev_get_drvdata(&pdev->dev); | |
98 | } | |
99 | ||
f1407d5c KM |
100 | /* |
101 | * syscfg functions | |
102 | */ | |
76190152 | 103 | static void usbhs_sys_clock_ctrl(struct usbhs_priv *priv, int enable) |
f1407d5c KM |
104 | { |
105 | usbhs_bset(priv, SYSCFG, SCKE, enable ? SCKE : 0); | |
106 | } | |
107 | ||
f1407d5c KM |
108 | void usbhs_sys_host_ctrl(struct usbhs_priv *priv, int enable) |
109 | { | |
3244a7b4 KM |
110 | u16 mask = DCFM | DRPD | DPRPU | HSE | USBE; |
111 | u16 val = DCFM | DRPD | HSE | USBE; | |
f427eb64 KM |
112 | int has_otg = usbhs_get_dparam(priv, has_otg); |
113 | ||
114 | if (has_otg) | |
115 | usbhs_bset(priv, DVSTCTR, (EXTLP | PWEN), (EXTLP | PWEN)); | |
f1407d5c KM |
116 | |
117 | /* | |
118 | * if enable | |
119 | * | |
120 | * - select Host mode | |
121 | * - D+ Line/D- Line Pull-down | |
122 | */ | |
123 | usbhs_bset(priv, SYSCFG, mask, enable ? val : 0); | |
124 | } | |
125 | ||
126 | void usbhs_sys_function_ctrl(struct usbhs_priv *priv, int enable) | |
127 | { | |
3244a7b4 | 128 | u16 mask = DCFM | DRPD | DPRPU | HSE | USBE; |
04a5def3 | 129 | u16 val = HSE | USBE; |
f1407d5c KM |
130 | |
131 | /* | |
132 | * if enable | |
133 | * | |
134 | * - select Function mode | |
04a5def3 TK |
135 | * - D+ Line Pull-up is disabled |
136 | * When D+ Line Pull-up is enabled, | |
137 | * calling usbhs_sys_function_pullup(,1) | |
f1407d5c KM |
138 | */ |
139 | usbhs_bset(priv, SYSCFG, mask, enable ? val : 0); | |
140 | } | |
141 | ||
4cd2f599 KM |
142 | void usbhs_sys_function_pullup(struct usbhs_priv *priv, int enable) |
143 | { | |
144 | usbhs_bset(priv, SYSCFG, DPRPU, enable ? DPRPU : 0); | |
145 | } | |
146 | ||
dfbb7f4f KM |
147 | void usbhs_sys_set_test_mode(struct usbhs_priv *priv, u16 mode) |
148 | { | |
149 | usbhs_write(priv, TESTMODE, mode); | |
150 | } | |
151 | ||
f1407d5c KM |
152 | /* |
153 | * frame functions | |
154 | */ | |
155 | int usbhs_frame_get_num(struct usbhs_priv *priv) | |
156 | { | |
157 | return usbhs_read(priv, FRMNUM) & FRNM_MASK; | |
158 | } | |
159 | ||
ef8bedb9 KM |
160 | /* |
161 | * usb request functions | |
162 | */ | |
163 | void usbhs_usbreq_get_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req) | |
164 | { | |
165 | u16 val; | |
166 | ||
167 | val = usbhs_read(priv, USBREQ); | |
168 | req->bRequest = (val >> 8) & 0xFF; | |
169 | req->bRequestType = (val >> 0) & 0xFF; | |
170 | ||
171 | req->wValue = usbhs_read(priv, USBVAL); | |
172 | req->wIndex = usbhs_read(priv, USBINDX); | |
173 | req->wLength = usbhs_read(priv, USBLENG); | |
174 | } | |
175 | ||
176 | void usbhs_usbreq_set_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req) | |
177 | { | |
178 | usbhs_write(priv, USBREQ, (req->bRequest << 8) | req->bRequestType); | |
179 | usbhs_write(priv, USBVAL, req->wValue); | |
180 | usbhs_write(priv, USBINDX, req->wIndex); | |
181 | usbhs_write(priv, USBLENG, req->wLength); | |
182 | ||
183 | usbhs_bset(priv, DCPCTR, SUREQ, SUREQ); | |
184 | } | |
185 | ||
258485d9 KM |
186 | /* |
187 | * bus/vbus functions | |
188 | */ | |
189 | void usbhs_bus_send_sof_enable(struct usbhs_priv *priv) | |
190 | { | |
a9be4a45 KM |
191 | u16 status = usbhs_read(priv, DVSTCTR) & (USBRST | UACT); |
192 | ||
193 | if (status != USBRST) { | |
194 | struct device *dev = usbhs_priv_to_dev(priv); | |
195 | dev_err(dev, "usbhs should be reset\n"); | |
196 | } | |
197 | ||
258485d9 KM |
198 | usbhs_bset(priv, DVSTCTR, (USBRST | UACT), UACT); |
199 | } | |
200 | ||
201 | void usbhs_bus_send_reset(struct usbhs_priv *priv) | |
202 | { | |
203 | usbhs_bset(priv, DVSTCTR, (USBRST | UACT), USBRST); | |
204 | } | |
205 | ||
75587f52 KM |
206 | int usbhs_bus_get_speed(struct usbhs_priv *priv) |
207 | { | |
208 | u16 dvstctr = usbhs_read(priv, DVSTCTR); | |
209 | ||
210 | switch (RHST & dvstctr) { | |
211 | case RHST_LOW_SPEED: | |
212 | return USB_SPEED_LOW; | |
213 | case RHST_FULL_SPEED: | |
214 | return USB_SPEED_FULL; | |
215 | case RHST_HIGH_SPEED: | |
216 | return USB_SPEED_HIGH; | |
217 | } | |
218 | ||
219 | return USB_SPEED_UNKNOWN; | |
220 | } | |
221 | ||
258485d9 KM |
222 | int usbhs_vbus_ctrl(struct usbhs_priv *priv, int enable) |
223 | { | |
224 | struct platform_device *pdev = usbhs_priv_to_pdev(priv); | |
225 | ||
226 | return usbhs_platform_call(priv, set_vbus, pdev, enable); | |
227 | } | |
228 | ||
229 | static void usbhsc_bus_init(struct usbhs_priv *priv) | |
230 | { | |
231 | usbhs_write(priv, DVSTCTR, 0); | |
232 | ||
233 | usbhs_vbus_ctrl(priv, 0); | |
234 | } | |
235 | ||
eb05191f KM |
236 | /* |
237 | * device configuration | |
238 | */ | |
3dd49268 | 239 | int usbhs_set_device_config(struct usbhs_priv *priv, int devnum, |
eb05191f KM |
240 | u16 upphub, u16 hubport, u16 speed) |
241 | { | |
242 | struct device *dev = usbhs_priv_to_dev(priv); | |
243 | u16 usbspd = 0; | |
244 | u32 reg = DEVADD0 + (2 * devnum); | |
245 | ||
246 | if (devnum > 10) { | |
247 | dev_err(dev, "cannot set speed to unknown device %d\n", devnum); | |
248 | return -EIO; | |
249 | } | |
250 | ||
251 | if (upphub > 0xA) { | |
252 | dev_err(dev, "unsupported hub number %d\n", upphub); | |
253 | return -EIO; | |
254 | } | |
255 | ||
256 | switch (speed) { | |
257 | case USB_SPEED_LOW: | |
258 | usbspd = USBSPD_SPEED_LOW; | |
259 | break; | |
260 | case USB_SPEED_FULL: | |
261 | usbspd = USBSPD_SPEED_FULL; | |
262 | break; | |
263 | case USB_SPEED_HIGH: | |
264 | usbspd = USBSPD_SPEED_HIGH; | |
265 | break; | |
266 | default: | |
267 | dev_err(dev, "unsupported speed %d\n", speed); | |
268 | return -EIO; | |
269 | } | |
270 | ||
271 | usbhs_write(priv, reg, UPPHUB(upphub) | | |
272 | HUBPORT(hubport)| | |
273 | USBSPD(usbspd)); | |
274 | ||
275 | return 0; | |
276 | } | |
277 | ||
ab330cf3 YS |
278 | /* |
279 | * interrupt functions | |
280 | */ | |
281 | void usbhs_xxxsts_clear(struct usbhs_priv *priv, u16 sts_reg, u16 bit) | |
282 | { | |
283 | u16 pipe_mask = (u16)GENMASK(usbhs_get_dparam(priv, pipe_size), 0); | |
284 | ||
285 | usbhs_write(priv, sts_reg, ~(1 << bit) & pipe_mask); | |
286 | } | |
287 | ||
f1407d5c KM |
288 | /* |
289 | * local functions | |
290 | */ | |
11935de5 | 291 | static void usbhsc_set_buswait(struct usbhs_priv *priv) |
f1407d5c KM |
292 | { |
293 | int wait = usbhs_get_dparam(priv, buswait_bwait); | |
f1407d5c | 294 | |
11935de5 KM |
295 | /* set bus wait if platform have */ |
296 | if (wait) | |
297 | usbhs_bset(priv, BUSWAIT, 0x000F, wait); | |
f1407d5c KM |
298 | } |
299 | ||
300 | /* | |
301 | * platform default param | |
302 | */ | |
8ecef00f UH |
303 | |
304 | /* commonly used on old SH-Mobile SoCs */ | |
f1407d5c KM |
305 | static u32 usbhsc_default_pipe_type[] = { |
306 | USB_ENDPOINT_XFER_CONTROL, | |
307 | USB_ENDPOINT_XFER_ISOC, | |
308 | USB_ENDPOINT_XFER_ISOC, | |
309 | USB_ENDPOINT_XFER_BULK, | |
310 | USB_ENDPOINT_XFER_BULK, | |
311 | USB_ENDPOINT_XFER_BULK, | |
312 | USB_ENDPOINT_XFER_INT, | |
313 | USB_ENDPOINT_XFER_INT, | |
314 | USB_ENDPOINT_XFER_INT, | |
315 | USB_ENDPOINT_XFER_INT, | |
316 | }; | |
317 | ||
8ecef00f UH |
318 | /* commonly used on newer SH-Mobile and R-Car SoCs */ |
319 | static u32 usbhsc_new_pipe_type[] = { | |
320 | USB_ENDPOINT_XFER_CONTROL, | |
321 | USB_ENDPOINT_XFER_ISOC, | |
322 | USB_ENDPOINT_XFER_ISOC, | |
323 | USB_ENDPOINT_XFER_BULK, | |
324 | USB_ENDPOINT_XFER_BULK, | |
325 | USB_ENDPOINT_XFER_BULK, | |
326 | USB_ENDPOINT_XFER_INT, | |
327 | USB_ENDPOINT_XFER_INT, | |
328 | USB_ENDPOINT_XFER_INT, | |
329 | USB_ENDPOINT_XFER_BULK, | |
330 | USB_ENDPOINT_XFER_BULK, | |
331 | USB_ENDPOINT_XFER_BULK, | |
332 | USB_ENDPOINT_XFER_BULK, | |
333 | USB_ENDPOINT_XFER_BULK, | |
334 | USB_ENDPOINT_XFER_BULK, | |
335 | USB_ENDPOINT_XFER_BULK, | |
336 | }; | |
337 | ||
f1407d5c | 338 | /* |
6e267da8 KM |
339 | * power control |
340 | */ | |
341 | static void usbhsc_power_ctrl(struct usbhs_priv *priv, int enable) | |
342 | { | |
f1ee56a0 | 343 | struct platform_device *pdev = usbhs_priv_to_pdev(priv); |
6e267da8 KM |
344 | struct device *dev = usbhs_priv_to_dev(priv); |
345 | ||
346 | if (enable) { | |
347 | /* enable PM */ | |
348 | pm_runtime_get_sync(dev); | |
349 | ||
f1ee56a0 KM |
350 | /* enable platform power */ |
351 | usbhs_platform_call(priv, power_ctrl, pdev, priv->base, enable); | |
352 | ||
6e267da8 KM |
353 | /* USB on */ |
354 | usbhs_sys_clock_ctrl(priv, enable); | |
6e267da8 KM |
355 | } else { |
356 | /* USB off */ | |
6e267da8 KM |
357 | usbhs_sys_clock_ctrl(priv, enable); |
358 | ||
f1ee56a0 KM |
359 | /* disable platform power */ |
360 | usbhs_platform_call(priv, power_ctrl, pdev, priv->base, enable); | |
361 | ||
6e267da8 KM |
362 | /* disable PM */ |
363 | pm_runtime_put_sync(dev); | |
364 | } | |
365 | } | |
366 | ||
367 | /* | |
ca8a282a | 368 | * hotplug |
f1407d5c | 369 | */ |
ca8a282a | 370 | static void usbhsc_hotplug(struct usbhs_priv *priv) |
f1407d5c | 371 | { |
f1407d5c KM |
372 | struct platform_device *pdev = usbhs_priv_to_pdev(priv); |
373 | struct usbhs_mod *mod = usbhs_mod_get_current(priv); | |
374 | int id; | |
375 | int enable; | |
d7b3968d | 376 | int cable; |
f1407d5c KM |
377 | int ret; |
378 | ||
379 | /* | |
380 | * get vbus status from platform | |
381 | */ | |
382 | enable = usbhs_platform_call(priv, get_vbus, pdev); | |
383 | ||
384 | /* | |
385 | * get id from platform | |
386 | */ | |
387 | id = usbhs_platform_call(priv, get_id, pdev); | |
388 | ||
389 | if (enable && !mod) { | |
d7b3968d | 390 | if (priv->edev) { |
50297b79 | 391 | cable = extcon_get_cable_state_(priv->edev, EXTCON_USB_HOST); |
d7b3968d SS |
392 | if ((cable > 0 && id != USBHS_HOST) || |
393 | (!cable && id != USBHS_GADGET)) { | |
394 | dev_info(&pdev->dev, | |
395 | "USB cable plugged in doesn't match the selected role!\n"); | |
396 | return; | |
397 | } | |
398 | } | |
399 | ||
f1407d5c KM |
400 | ret = usbhs_mod_change(priv, id); |
401 | if (ret < 0) | |
402 | return; | |
403 | ||
404 | dev_dbg(&pdev->dev, "%s enable\n", __func__); | |
405 | ||
6e267da8 | 406 | /* power on */ |
b002ff6e KM |
407 | if (usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) |
408 | usbhsc_power_ctrl(priv, enable); | |
f1407d5c | 409 | |
258485d9 KM |
410 | /* bus init */ |
411 | usbhsc_set_buswait(priv); | |
412 | usbhsc_bus_init(priv); | |
413 | ||
f1407d5c KM |
414 | /* module start */ |
415 | usbhs_mod_call(priv, start, priv); | |
416 | ||
417 | } else if (!enable && mod) { | |
418 | dev_dbg(&pdev->dev, "%s disable\n", __func__); | |
419 | ||
420 | /* module stop */ | |
421 | usbhs_mod_call(priv, stop, priv); | |
422 | ||
258485d9 KM |
423 | /* bus init */ |
424 | usbhsc_bus_init(priv); | |
425 | ||
6e267da8 | 426 | /* power off */ |
b002ff6e KM |
427 | if (usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) |
428 | usbhsc_power_ctrl(priv, enable); | |
f1407d5c KM |
429 | |
430 | usbhs_mod_change(priv, -1); | |
431 | ||
432 | /* reset phy for next connection */ | |
433 | usbhs_platform_call(priv, phy_reset, pdev); | |
434 | } | |
435 | } | |
436 | ||
ca8a282a KM |
437 | /* |
438 | * notify hotplug | |
439 | */ | |
440 | static void usbhsc_notify_hotplug(struct work_struct *work) | |
441 | { | |
442 | struct usbhs_priv *priv = container_of(work, | |
443 | struct usbhs_priv, | |
444 | notify_hotplug_work.work); | |
445 | usbhsc_hotplug(priv); | |
446 | } | |
447 | ||
b4fcea2a | 448 | static int usbhsc_drvcllbck_notify_hotplug(struct platform_device *pdev) |
f1407d5c | 449 | { |
206dcc2c | 450 | struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev); |
bc57381e | 451 | int delay = usbhs_get_dparam(priv, detection_delay); |
f1407d5c KM |
452 | |
453 | /* | |
454 | * This functions will be called in interrupt. | |
455 | * To make sure safety context, | |
456 | * use workqueue for usbhs_notify_hotplug | |
457 | */ | |
a49a88f1 KM |
458 | schedule_delayed_work(&priv->notify_hotplug_work, |
459 | msecs_to_jiffies(delay)); | |
f1407d5c KM |
460 | return 0; |
461 | } | |
462 | ||
463 | /* | |
464 | * platform functions | |
465 | */ | |
b854100e YS |
466 | static const struct of_device_id usbhs_of_match[] = { |
467 | { | |
468 | .compatible = "renesas,usbhs-r8a7790", | |
e0213bc5 | 469 | .data = (void *)USBHS_TYPE_RCAR_GEN2, |
b854100e YS |
470 | }, |
471 | { | |
472 | .compatible = "renesas,usbhs-r8a7791", | |
e0213bc5 | 473 | .data = (void *)USBHS_TYPE_RCAR_GEN2, |
b854100e | 474 | }, |
af6e613b YS |
475 | { |
476 | .compatible = "renesas,usbhs-r8a7794", | |
477 | .data = (void *)USBHS_TYPE_RCAR_GEN2, | |
478 | }, | |
b854100e YS |
479 | { }, |
480 | }; | |
481 | MODULE_DEVICE_TABLE(of, usbhs_of_match); | |
482 | ||
483 | static struct renesas_usbhs_platform_info *usbhs_parse_dt(struct device *dev) | |
484 | { | |
485 | struct renesas_usbhs_platform_info *info; | |
486 | struct renesas_usbhs_driver_param *dparam; | |
487 | const struct of_device_id *of_id = of_match_device(usbhs_of_match, dev); | |
488 | u32 tmp; | |
489 | int gpio; | |
490 | ||
491 | info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL); | |
492 | if (!info) | |
493 | return NULL; | |
494 | ||
495 | dparam = &info->driver_param; | |
496 | dparam->type = of_id ? (u32)of_id->data : 0; | |
497 | if (!of_property_read_u32(dev->of_node, "renesas,buswait", &tmp)) | |
498 | dparam->buswait_bwait = tmp; | |
499 | gpio = of_get_named_gpio_flags(dev->of_node, "renesas,enable-gpio", 0, | |
500 | NULL); | |
501 | if (gpio > 0) | |
502 | dparam->enable_gpio = gpio; | |
503 | ||
e0213bc5 | 504 | if (dparam->type == USBHS_TYPE_RCAR_GEN2) |
ab330cf3 | 505 | dparam->has_usb_dmac = 1; |
ab330cf3 | 506 | |
b854100e YS |
507 | return info; |
508 | } | |
509 | ||
b7a8d17d | 510 | static int usbhs_probe(struct platform_device *pdev) |
f1407d5c | 511 | { |
ace0a5f9 | 512 | struct renesas_usbhs_platform_info *info = dev_get_platdata(&pdev->dev); |
f1407d5c KM |
513 | struct renesas_usbhs_driver_callback *dfunc; |
514 | struct usbhs_priv *priv; | |
53069af3 | 515 | struct resource *res, *irq_res; |
f1407d5c KM |
516 | int ret; |
517 | ||
b854100e YS |
518 | /* check device node */ |
519 | if (pdev->dev.of_node) | |
520 | info = pdev->dev.platform_data = usbhs_parse_dt(&pdev->dev); | |
521 | ||
f1407d5c | 522 | /* check platform information */ |
8ecef00f | 523 | if (!info) { |
f1407d5c KM |
524 | dev_err(&pdev->dev, "no platform information\n"); |
525 | return -EINVAL; | |
526 | } | |
527 | ||
528 | /* platform data */ | |
53069af3 | 529 | irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
687f16b8 | 530 | if (!irq_res) { |
f1407d5c KM |
531 | dev_err(&pdev->dev, "Not enough Renesas USB platform resources.\n"); |
532 | return -ENODEV; | |
533 | } | |
534 | ||
535 | /* usb private data */ | |
58efc77c | 536 | priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); |
b1cb07cd | 537 | if (!priv) |
f1407d5c | 538 | return -ENOMEM; |
f1407d5c | 539 | |
687f16b8 | 540 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
148e1134 TR |
541 | priv->base = devm_ioremap_resource(&pdev->dev, res); |
542 | if (IS_ERR(priv->base)) | |
543 | return PTR_ERR(priv->base); | |
f1407d5c | 544 | |
d7b3968d SS |
545 | if (of_property_read_bool(pdev->dev.of_node, "extcon")) { |
546 | priv->edev = extcon_get_edev_by_phandle(&pdev->dev, 0); | |
547 | if (IS_ERR(priv->edev)) | |
548 | return PTR_ERR(priv->edev); | |
549 | } | |
550 | ||
f1407d5c KM |
551 | /* |
552 | * care platform info | |
553 | */ | |
8ecef00f | 554 | |
48298206 KM |
555 | memcpy(&priv->dparam, |
556 | &info->driver_param, | |
557 | sizeof(struct renesas_usbhs_driver_param)); | |
f1407d5c | 558 | |
8ecef00f | 559 | switch (priv->dparam.type) { |
e0213bc5 | 560 | case USBHS_TYPE_RCAR_GEN2: |
8ecef00f UH |
561 | priv->pfunc = usbhs_rcar2_ops; |
562 | if (!priv->dparam.pipe_type) { | |
563 | priv->dparam.pipe_type = usbhsc_new_pipe_type; | |
564 | priv->dparam.pipe_size = | |
565 | ARRAY_SIZE(usbhsc_new_pipe_type); | |
566 | } | |
567 | break; | |
568 | default: | |
569 | if (!info->platform_callback.get_id) { | |
570 | dev_err(&pdev->dev, "no platform callbacks"); | |
571 | return -EINVAL; | |
572 | } | |
573 | memcpy(&priv->pfunc, | |
574 | &info->platform_callback, | |
575 | sizeof(struct renesas_usbhs_platform_callback)); | |
576 | break; | |
577 | } | |
578 | ||
f1407d5c KM |
579 | /* set driver callback functions for platform */ |
580 | dfunc = &info->driver_callback; | |
581 | dfunc->notify_hotplug = usbhsc_drvcllbck_notify_hotplug; | |
582 | ||
583 | /* set default param if platform doesn't have */ | |
48298206 KM |
584 | if (!priv->dparam.pipe_type) { |
585 | priv->dparam.pipe_type = usbhsc_default_pipe_type; | |
586 | priv->dparam.pipe_size = ARRAY_SIZE(usbhsc_default_pipe_type); | |
f1407d5c | 587 | } |
48298206 KM |
588 | if (!priv->dparam.pio_dma_border) |
589 | priv->dparam.pio_dma_border = 64; /* 64byte */ | |
f1407d5c | 590 | |
b002ff6e KM |
591 | /* FIXME */ |
592 | /* runtime power control ? */ | |
48298206 | 593 | if (priv->pfunc.get_vbus) |
b002ff6e KM |
594 | usbhsc_flags_set(priv, USBHSF_RUNTIME_PWCTRL); |
595 | ||
f1407d5c KM |
596 | /* |
597 | * priv settings | |
598 | */ | |
53069af3 SY |
599 | priv->irq = irq_res->start; |
600 | if (irq_res->flags & IORESOURCE_IRQ_SHAREABLE) | |
601 | priv->irqflags = IRQF_SHARED; | |
f1407d5c | 602 | priv->pdev = pdev; |
bc57381e | 603 | INIT_DELAYED_WORK(&priv->notify_hotplug_work, usbhsc_notify_hotplug); |
f1407d5c KM |
604 | spin_lock_init(usbhs_priv_to_lock(priv)); |
605 | ||
606 | /* call pipe and module init */ | |
607 | ret = usbhs_pipe_probe(priv); | |
608 | if (ret < 0) | |
58efc77c | 609 | return ret; |
f1407d5c | 610 | |
d3af90a5 | 611 | ret = usbhs_fifo_probe(priv); |
f1407d5c | 612 | if (ret < 0) |
97f93227 | 613 | goto probe_end_pipe_exit; |
f1407d5c | 614 | |
d3af90a5 KM |
615 | ret = usbhs_mod_probe(priv); |
616 | if (ret < 0) | |
617 | goto probe_end_fifo_exit; | |
618 | ||
f1407d5c | 619 | /* dev_set_drvdata should be called after usbhs_mod_init */ |
c9a0552e | 620 | platform_set_drvdata(pdev, priv); |
f1407d5c KM |
621 | |
622 | /* | |
623 | * deviece reset here because | |
624 | * USB device might be used in boot loader. | |
625 | */ | |
626 | usbhs_sys_clock_ctrl(priv, 0); | |
627 | ||
8ecef00f UH |
628 | /* check GPIO determining if USB function should be enabled */ |
629 | if (priv->dparam.enable_gpio) { | |
630 | gpio_request_one(priv->dparam.enable_gpio, GPIOF_IN, NULL); | |
631 | ret = !gpio_get_value(priv->dparam.enable_gpio); | |
632 | gpio_free(priv->dparam.enable_gpio); | |
633 | if (ret) { | |
634 | dev_warn(&pdev->dev, | |
635 | "USB function not selected (GPIO %d)\n", | |
636 | priv->dparam.enable_gpio); | |
637 | ret = -ENOTSUPP; | |
638 | goto probe_end_mod_exit; | |
639 | } | |
640 | } | |
641 | ||
f1407d5c KM |
642 | /* |
643 | * platform call | |
644 | * | |
645 | * USB phy setup might depend on CPU/Board. | |
646 | * If platform has its callback functions, | |
647 | * call it here. | |
648 | */ | |
649 | ret = usbhs_platform_call(priv, hardware_init, pdev); | |
650 | if (ret < 0) { | |
48ac1e57 | 651 | dev_err(&pdev->dev, "platform init failed.\n"); |
97f93227 | 652 | goto probe_end_mod_exit; |
f1407d5c KM |
653 | } |
654 | ||
655 | /* reset phy for connection */ | |
656 | usbhs_platform_call(priv, phy_reset, pdev); | |
657 | ||
b002ff6e KM |
658 | /* power control */ |
659 | pm_runtime_enable(&pdev->dev); | |
660 | if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) { | |
661 | usbhsc_power_ctrl(priv, 1); | |
662 | usbhs_mod_autonomy_mode(priv); | |
663 | } | |
664 | ||
f1407d5c KM |
665 | /* |
666 | * manual call notify_hotplug for cold plug | |
667 | */ | |
368504c0 | 668 | usbhsc_drvcllbck_notify_hotplug(pdev); |
f1407d5c KM |
669 | |
670 | dev_info(&pdev->dev, "probed\n"); | |
671 | ||
672 | return ret; | |
673 | ||
f1407d5c KM |
674 | probe_end_mod_exit: |
675 | usbhs_mod_remove(priv); | |
d3af90a5 KM |
676 | probe_end_fifo_exit: |
677 | usbhs_fifo_remove(priv); | |
97f93227 KM |
678 | probe_end_pipe_exit: |
679 | usbhs_pipe_remove(priv); | |
f1407d5c KM |
680 | |
681 | dev_info(&pdev->dev, "probe failed\n"); | |
682 | ||
683 | return ret; | |
684 | } | |
685 | ||
fb4e98ab | 686 | static int usbhs_remove(struct platform_device *pdev) |
f1407d5c | 687 | { |
206dcc2c | 688 | struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev); |
ace0a5f9 | 689 | struct renesas_usbhs_platform_info *info = dev_get_platdata(&pdev->dev); |
af32fe51 | 690 | struct renesas_usbhs_driver_callback *dfunc = &info->driver_callback; |
f1407d5c KM |
691 | |
692 | dev_dbg(&pdev->dev, "usb remove\n"); | |
693 | ||
af32fe51 KM |
694 | dfunc->notify_hotplug = NULL; |
695 | ||
b002ff6e KM |
696 | /* power off */ |
697 | if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) | |
698 | usbhsc_power_ctrl(priv, 0); | |
f1407d5c | 699 | |
b002ff6e | 700 | pm_runtime_disable(&pdev->dev); |
f1407d5c KM |
701 | |
702 | usbhs_platform_call(priv, hardware_exit, pdev); | |
f1407d5c | 703 | usbhs_mod_remove(priv); |
d3af90a5 | 704 | usbhs_fifo_remove(priv); |
97f93227 | 705 | usbhs_pipe_remove(priv); |
f1407d5c KM |
706 | |
707 | return 0; | |
708 | } | |
709 | ||
ca8a282a KM |
710 | static int usbhsc_suspend(struct device *dev) |
711 | { | |
712 | struct usbhs_priv *priv = dev_get_drvdata(dev); | |
713 | struct usbhs_mod *mod = usbhs_mod_get_current(priv); | |
714 | ||
715 | if (mod) { | |
716 | usbhs_mod_call(priv, stop, priv); | |
717 | usbhs_mod_change(priv, -1); | |
718 | } | |
719 | ||
720 | if (mod || !usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) | |
721 | usbhsc_power_ctrl(priv, 0); | |
722 | ||
723 | return 0; | |
724 | } | |
725 | ||
726 | static int usbhsc_resume(struct device *dev) | |
727 | { | |
728 | struct usbhs_priv *priv = dev_get_drvdata(dev); | |
729 | struct platform_device *pdev = usbhs_priv_to_pdev(priv); | |
730 | ||
ca8a282a KM |
731 | if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) |
732 | usbhsc_power_ctrl(priv, 1); | |
733 | ||
5b50d3b5 KM |
734 | usbhs_platform_call(priv, phy_reset, pdev); |
735 | ||
736 | usbhsc_drvcllbck_notify_hotplug(pdev); | |
ca8a282a KM |
737 | |
738 | return 0; | |
739 | } | |
740 | ||
741 | static int usbhsc_runtime_nop(struct device *dev) | |
742 | { | |
743 | /* Runtime PM callback shared between ->runtime_suspend() | |
744 | * and ->runtime_resume(). Simply returns success. | |
745 | * | |
746 | * This driver re-initializes all registers after | |
747 | * pm_runtime_get_sync() anyway so there is no need | |
748 | * to save and restore registers here. | |
749 | */ | |
750 | return 0; | |
751 | } | |
752 | ||
753 | static const struct dev_pm_ops usbhsc_pm_ops = { | |
754 | .suspend = usbhsc_suspend, | |
755 | .resume = usbhsc_resume, | |
756 | .runtime_suspend = usbhsc_runtime_nop, | |
757 | .runtime_resume = usbhsc_runtime_nop, | |
758 | }; | |
759 | ||
f1407d5c KM |
760 | static struct platform_driver renesas_usbhs_driver = { |
761 | .driver = { | |
762 | .name = "renesas_usbhs", | |
ca8a282a | 763 | .pm = &usbhsc_pm_ops, |
b854100e | 764 | .of_match_table = of_match_ptr(usbhs_of_match), |
f1407d5c KM |
765 | }, |
766 | .probe = usbhs_probe, | |
7690417d | 767 | .remove = usbhs_remove, |
f1407d5c KM |
768 | }; |
769 | ||
cc27c96c | 770 | module_platform_driver(renesas_usbhs_driver); |
f1407d5c KM |
771 | |
772 | MODULE_LICENSE("GPL"); | |
773 | MODULE_DESCRIPTION("Renesas USB driver"); | |
774 | MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); |