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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 KM |
128 | u16 mask = DCFM | DRPD | DPRPU | HSE | USBE; |
129 | u16 val = DPRPU | HSE | USBE; | |
f1407d5c KM |
130 | |
131 | /* | |
132 | * if enable | |
133 | * | |
134 | * - select Function mode | |
135 | * - D+ Line Pull-up | |
136 | */ | |
137 | usbhs_bset(priv, SYSCFG, mask, enable ? val : 0); | |
138 | } | |
139 | ||
4cd2f599 KM |
140 | void usbhs_sys_function_pullup(struct usbhs_priv *priv, int enable) |
141 | { | |
142 | usbhs_bset(priv, SYSCFG, DPRPU, enable ? DPRPU : 0); | |
143 | } | |
144 | ||
dfbb7f4f KM |
145 | void usbhs_sys_set_test_mode(struct usbhs_priv *priv, u16 mode) |
146 | { | |
147 | usbhs_write(priv, TESTMODE, mode); | |
148 | } | |
149 | ||
f1407d5c KM |
150 | /* |
151 | * frame functions | |
152 | */ | |
153 | int usbhs_frame_get_num(struct usbhs_priv *priv) | |
154 | { | |
155 | return usbhs_read(priv, FRMNUM) & FRNM_MASK; | |
156 | } | |
157 | ||
ef8bedb9 KM |
158 | /* |
159 | * usb request functions | |
160 | */ | |
161 | void usbhs_usbreq_get_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req) | |
162 | { | |
163 | u16 val; | |
164 | ||
165 | val = usbhs_read(priv, USBREQ); | |
166 | req->bRequest = (val >> 8) & 0xFF; | |
167 | req->bRequestType = (val >> 0) & 0xFF; | |
168 | ||
169 | req->wValue = usbhs_read(priv, USBVAL); | |
170 | req->wIndex = usbhs_read(priv, USBINDX); | |
171 | req->wLength = usbhs_read(priv, USBLENG); | |
172 | } | |
173 | ||
174 | void usbhs_usbreq_set_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req) | |
175 | { | |
176 | usbhs_write(priv, USBREQ, (req->bRequest << 8) | req->bRequestType); | |
177 | usbhs_write(priv, USBVAL, req->wValue); | |
178 | usbhs_write(priv, USBINDX, req->wIndex); | |
179 | usbhs_write(priv, USBLENG, req->wLength); | |
180 | ||
181 | usbhs_bset(priv, DCPCTR, SUREQ, SUREQ); | |
182 | } | |
183 | ||
258485d9 KM |
184 | /* |
185 | * bus/vbus functions | |
186 | */ | |
187 | void usbhs_bus_send_sof_enable(struct usbhs_priv *priv) | |
188 | { | |
a9be4a45 KM |
189 | u16 status = usbhs_read(priv, DVSTCTR) & (USBRST | UACT); |
190 | ||
191 | if (status != USBRST) { | |
192 | struct device *dev = usbhs_priv_to_dev(priv); | |
193 | dev_err(dev, "usbhs should be reset\n"); | |
194 | } | |
195 | ||
258485d9 KM |
196 | usbhs_bset(priv, DVSTCTR, (USBRST | UACT), UACT); |
197 | } | |
198 | ||
199 | void usbhs_bus_send_reset(struct usbhs_priv *priv) | |
200 | { | |
201 | usbhs_bset(priv, DVSTCTR, (USBRST | UACT), USBRST); | |
202 | } | |
203 | ||
75587f52 KM |
204 | int usbhs_bus_get_speed(struct usbhs_priv *priv) |
205 | { | |
206 | u16 dvstctr = usbhs_read(priv, DVSTCTR); | |
207 | ||
208 | switch (RHST & dvstctr) { | |
209 | case RHST_LOW_SPEED: | |
210 | return USB_SPEED_LOW; | |
211 | case RHST_FULL_SPEED: | |
212 | return USB_SPEED_FULL; | |
213 | case RHST_HIGH_SPEED: | |
214 | return USB_SPEED_HIGH; | |
215 | } | |
216 | ||
217 | return USB_SPEED_UNKNOWN; | |
218 | } | |
219 | ||
258485d9 KM |
220 | int usbhs_vbus_ctrl(struct usbhs_priv *priv, int enable) |
221 | { | |
222 | struct platform_device *pdev = usbhs_priv_to_pdev(priv); | |
223 | ||
224 | return usbhs_platform_call(priv, set_vbus, pdev, enable); | |
225 | } | |
226 | ||
227 | static void usbhsc_bus_init(struct usbhs_priv *priv) | |
228 | { | |
229 | usbhs_write(priv, DVSTCTR, 0); | |
230 | ||
231 | usbhs_vbus_ctrl(priv, 0); | |
232 | } | |
233 | ||
eb05191f KM |
234 | /* |
235 | * device configuration | |
236 | */ | |
3dd49268 | 237 | int usbhs_set_device_config(struct usbhs_priv *priv, int devnum, |
eb05191f KM |
238 | u16 upphub, u16 hubport, u16 speed) |
239 | { | |
240 | struct device *dev = usbhs_priv_to_dev(priv); | |
241 | u16 usbspd = 0; | |
242 | u32 reg = DEVADD0 + (2 * devnum); | |
243 | ||
244 | if (devnum > 10) { | |
245 | dev_err(dev, "cannot set speed to unknown device %d\n", devnum); | |
246 | return -EIO; | |
247 | } | |
248 | ||
249 | if (upphub > 0xA) { | |
250 | dev_err(dev, "unsupported hub number %d\n", upphub); | |
251 | return -EIO; | |
252 | } | |
253 | ||
254 | switch (speed) { | |
255 | case USB_SPEED_LOW: | |
256 | usbspd = USBSPD_SPEED_LOW; | |
257 | break; | |
258 | case USB_SPEED_FULL: | |
259 | usbspd = USBSPD_SPEED_FULL; | |
260 | break; | |
261 | case USB_SPEED_HIGH: | |
262 | usbspd = USBSPD_SPEED_HIGH; | |
263 | break; | |
264 | default: | |
265 | dev_err(dev, "unsupported speed %d\n", speed); | |
266 | return -EIO; | |
267 | } | |
268 | ||
269 | usbhs_write(priv, reg, UPPHUB(upphub) | | |
270 | HUBPORT(hubport)| | |
271 | USBSPD(usbspd)); | |
272 | ||
273 | return 0; | |
274 | } | |
275 | ||
f1407d5c KM |
276 | /* |
277 | * local functions | |
278 | */ | |
11935de5 | 279 | static void usbhsc_set_buswait(struct usbhs_priv *priv) |
f1407d5c KM |
280 | { |
281 | int wait = usbhs_get_dparam(priv, buswait_bwait); | |
f1407d5c | 282 | |
11935de5 KM |
283 | /* set bus wait if platform have */ |
284 | if (wait) | |
285 | usbhs_bset(priv, BUSWAIT, 0x000F, wait); | |
f1407d5c KM |
286 | } |
287 | ||
288 | /* | |
289 | * platform default param | |
290 | */ | |
8ecef00f UH |
291 | |
292 | /* commonly used on old SH-Mobile SoCs */ | |
f1407d5c KM |
293 | static u32 usbhsc_default_pipe_type[] = { |
294 | USB_ENDPOINT_XFER_CONTROL, | |
295 | USB_ENDPOINT_XFER_ISOC, | |
296 | USB_ENDPOINT_XFER_ISOC, | |
297 | USB_ENDPOINT_XFER_BULK, | |
298 | USB_ENDPOINT_XFER_BULK, | |
299 | USB_ENDPOINT_XFER_BULK, | |
300 | USB_ENDPOINT_XFER_INT, | |
301 | USB_ENDPOINT_XFER_INT, | |
302 | USB_ENDPOINT_XFER_INT, | |
303 | USB_ENDPOINT_XFER_INT, | |
304 | }; | |
305 | ||
8ecef00f UH |
306 | /* commonly used on newer SH-Mobile and R-Car SoCs */ |
307 | static u32 usbhsc_new_pipe_type[] = { | |
308 | USB_ENDPOINT_XFER_CONTROL, | |
309 | USB_ENDPOINT_XFER_ISOC, | |
310 | USB_ENDPOINT_XFER_ISOC, | |
311 | USB_ENDPOINT_XFER_BULK, | |
312 | USB_ENDPOINT_XFER_BULK, | |
313 | USB_ENDPOINT_XFER_BULK, | |
314 | USB_ENDPOINT_XFER_INT, | |
315 | USB_ENDPOINT_XFER_INT, | |
316 | USB_ENDPOINT_XFER_INT, | |
317 | USB_ENDPOINT_XFER_BULK, | |
318 | USB_ENDPOINT_XFER_BULK, | |
319 | USB_ENDPOINT_XFER_BULK, | |
320 | USB_ENDPOINT_XFER_BULK, | |
321 | USB_ENDPOINT_XFER_BULK, | |
322 | USB_ENDPOINT_XFER_BULK, | |
323 | USB_ENDPOINT_XFER_BULK, | |
324 | }; | |
325 | ||
f1407d5c | 326 | /* |
6e267da8 KM |
327 | * power control |
328 | */ | |
329 | static void usbhsc_power_ctrl(struct usbhs_priv *priv, int enable) | |
330 | { | |
f1ee56a0 | 331 | struct platform_device *pdev = usbhs_priv_to_pdev(priv); |
6e267da8 KM |
332 | struct device *dev = usbhs_priv_to_dev(priv); |
333 | ||
334 | if (enable) { | |
335 | /* enable PM */ | |
336 | pm_runtime_get_sync(dev); | |
337 | ||
f1ee56a0 KM |
338 | /* enable platform power */ |
339 | usbhs_platform_call(priv, power_ctrl, pdev, priv->base, enable); | |
340 | ||
6e267da8 KM |
341 | /* USB on */ |
342 | usbhs_sys_clock_ctrl(priv, enable); | |
6e267da8 KM |
343 | } else { |
344 | /* USB off */ | |
6e267da8 KM |
345 | usbhs_sys_clock_ctrl(priv, enable); |
346 | ||
f1ee56a0 KM |
347 | /* disable platform power */ |
348 | usbhs_platform_call(priv, power_ctrl, pdev, priv->base, enable); | |
349 | ||
6e267da8 KM |
350 | /* disable PM */ |
351 | pm_runtime_put_sync(dev); | |
352 | } | |
353 | } | |
354 | ||
355 | /* | |
ca8a282a | 356 | * hotplug |
f1407d5c | 357 | */ |
ca8a282a | 358 | static void usbhsc_hotplug(struct usbhs_priv *priv) |
f1407d5c | 359 | { |
f1407d5c KM |
360 | struct platform_device *pdev = usbhs_priv_to_pdev(priv); |
361 | struct usbhs_mod *mod = usbhs_mod_get_current(priv); | |
362 | int id; | |
363 | int enable; | |
364 | int ret; | |
365 | ||
366 | /* | |
367 | * get vbus status from platform | |
368 | */ | |
369 | enable = usbhs_platform_call(priv, get_vbus, pdev); | |
370 | ||
371 | /* | |
372 | * get id from platform | |
373 | */ | |
374 | id = usbhs_platform_call(priv, get_id, pdev); | |
375 | ||
376 | if (enable && !mod) { | |
377 | ret = usbhs_mod_change(priv, id); | |
378 | if (ret < 0) | |
379 | return; | |
380 | ||
381 | dev_dbg(&pdev->dev, "%s enable\n", __func__); | |
382 | ||
6e267da8 | 383 | /* power on */ |
b002ff6e KM |
384 | if (usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) |
385 | usbhsc_power_ctrl(priv, enable); | |
f1407d5c | 386 | |
258485d9 KM |
387 | /* bus init */ |
388 | usbhsc_set_buswait(priv); | |
389 | usbhsc_bus_init(priv); | |
390 | ||
f1407d5c KM |
391 | /* module start */ |
392 | usbhs_mod_call(priv, start, priv); | |
393 | ||
394 | } else if (!enable && mod) { | |
395 | dev_dbg(&pdev->dev, "%s disable\n", __func__); | |
396 | ||
397 | /* module stop */ | |
398 | usbhs_mod_call(priv, stop, priv); | |
399 | ||
258485d9 KM |
400 | /* bus init */ |
401 | usbhsc_bus_init(priv); | |
402 | ||
6e267da8 | 403 | /* power off */ |
b002ff6e KM |
404 | if (usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) |
405 | usbhsc_power_ctrl(priv, enable); | |
f1407d5c KM |
406 | |
407 | usbhs_mod_change(priv, -1); | |
408 | ||
409 | /* reset phy for next connection */ | |
410 | usbhs_platform_call(priv, phy_reset, pdev); | |
411 | } | |
412 | } | |
413 | ||
ca8a282a KM |
414 | /* |
415 | * notify hotplug | |
416 | */ | |
417 | static void usbhsc_notify_hotplug(struct work_struct *work) | |
418 | { | |
419 | struct usbhs_priv *priv = container_of(work, | |
420 | struct usbhs_priv, | |
421 | notify_hotplug_work.work); | |
422 | usbhsc_hotplug(priv); | |
423 | } | |
424 | ||
b4fcea2a | 425 | static int usbhsc_drvcllbck_notify_hotplug(struct platform_device *pdev) |
f1407d5c | 426 | { |
206dcc2c | 427 | struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev); |
bc57381e | 428 | int delay = usbhs_get_dparam(priv, detection_delay); |
f1407d5c KM |
429 | |
430 | /* | |
431 | * This functions will be called in interrupt. | |
432 | * To make sure safety context, | |
433 | * use workqueue for usbhs_notify_hotplug | |
434 | */ | |
a49a88f1 KM |
435 | schedule_delayed_work(&priv->notify_hotplug_work, |
436 | msecs_to_jiffies(delay)); | |
f1407d5c KM |
437 | return 0; |
438 | } | |
439 | ||
440 | /* | |
441 | * platform functions | |
442 | */ | |
b854100e YS |
443 | static const struct of_device_id usbhs_of_match[] = { |
444 | { | |
445 | .compatible = "renesas,usbhs-r8a7790", | |
446 | .data = (void *)USBHS_TYPE_R8A7790, | |
447 | }, | |
448 | { | |
449 | .compatible = "renesas,usbhs-r8a7791", | |
450 | .data = (void *)USBHS_TYPE_R8A7791, | |
451 | }, | |
452 | { }, | |
453 | }; | |
454 | MODULE_DEVICE_TABLE(of, usbhs_of_match); | |
455 | ||
456 | static struct renesas_usbhs_platform_info *usbhs_parse_dt(struct device *dev) | |
457 | { | |
458 | struct renesas_usbhs_platform_info *info; | |
459 | struct renesas_usbhs_driver_param *dparam; | |
460 | const struct of_device_id *of_id = of_match_device(usbhs_of_match, dev); | |
461 | u32 tmp; | |
462 | int gpio; | |
463 | ||
464 | info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL); | |
465 | if (!info) | |
466 | return NULL; | |
467 | ||
468 | dparam = &info->driver_param; | |
469 | dparam->type = of_id ? (u32)of_id->data : 0; | |
470 | if (!of_property_read_u32(dev->of_node, "renesas,buswait", &tmp)) | |
471 | dparam->buswait_bwait = tmp; | |
472 | gpio = of_get_named_gpio_flags(dev->of_node, "renesas,enable-gpio", 0, | |
473 | NULL); | |
474 | if (gpio > 0) | |
475 | dparam->enable_gpio = gpio; | |
476 | ||
477 | return info; | |
478 | } | |
479 | ||
b7a8d17d | 480 | static int usbhs_probe(struct platform_device *pdev) |
f1407d5c | 481 | { |
ace0a5f9 | 482 | struct renesas_usbhs_platform_info *info = dev_get_platdata(&pdev->dev); |
f1407d5c KM |
483 | struct renesas_usbhs_driver_callback *dfunc; |
484 | struct usbhs_priv *priv; | |
53069af3 | 485 | struct resource *res, *irq_res; |
f1407d5c KM |
486 | int ret; |
487 | ||
b854100e YS |
488 | /* check device node */ |
489 | if (pdev->dev.of_node) | |
490 | info = pdev->dev.platform_data = usbhs_parse_dt(&pdev->dev); | |
491 | ||
f1407d5c | 492 | /* check platform information */ |
8ecef00f | 493 | if (!info) { |
f1407d5c KM |
494 | dev_err(&pdev->dev, "no platform information\n"); |
495 | return -EINVAL; | |
496 | } | |
497 | ||
498 | /* platform data */ | |
53069af3 | 499 | irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
687f16b8 | 500 | if (!irq_res) { |
f1407d5c KM |
501 | dev_err(&pdev->dev, "Not enough Renesas USB platform resources.\n"); |
502 | return -ENODEV; | |
503 | } | |
504 | ||
505 | /* usb private data */ | |
58efc77c | 506 | priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); |
b1cb07cd | 507 | if (!priv) |
f1407d5c | 508 | return -ENOMEM; |
f1407d5c | 509 | |
687f16b8 | 510 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
148e1134 TR |
511 | priv->base = devm_ioremap_resource(&pdev->dev, res); |
512 | if (IS_ERR(priv->base)) | |
513 | return PTR_ERR(priv->base); | |
f1407d5c KM |
514 | |
515 | /* | |
516 | * care platform info | |
517 | */ | |
8ecef00f | 518 | |
48298206 KM |
519 | memcpy(&priv->dparam, |
520 | &info->driver_param, | |
521 | sizeof(struct renesas_usbhs_driver_param)); | |
f1407d5c | 522 | |
8ecef00f UH |
523 | switch (priv->dparam.type) { |
524 | case USBHS_TYPE_R8A7790: | |
525 | case USBHS_TYPE_R8A7791: | |
526 | priv->pfunc = usbhs_rcar2_ops; | |
527 | if (!priv->dparam.pipe_type) { | |
528 | priv->dparam.pipe_type = usbhsc_new_pipe_type; | |
529 | priv->dparam.pipe_size = | |
530 | ARRAY_SIZE(usbhsc_new_pipe_type); | |
531 | } | |
532 | break; | |
533 | default: | |
534 | if (!info->platform_callback.get_id) { | |
535 | dev_err(&pdev->dev, "no platform callbacks"); | |
536 | return -EINVAL; | |
537 | } | |
538 | memcpy(&priv->pfunc, | |
539 | &info->platform_callback, | |
540 | sizeof(struct renesas_usbhs_platform_callback)); | |
541 | break; | |
542 | } | |
543 | ||
f1407d5c KM |
544 | /* set driver callback functions for platform */ |
545 | dfunc = &info->driver_callback; | |
546 | dfunc->notify_hotplug = usbhsc_drvcllbck_notify_hotplug; | |
547 | ||
548 | /* set default param if platform doesn't have */ | |
48298206 KM |
549 | if (!priv->dparam.pipe_type) { |
550 | priv->dparam.pipe_type = usbhsc_default_pipe_type; | |
551 | priv->dparam.pipe_size = ARRAY_SIZE(usbhsc_default_pipe_type); | |
f1407d5c | 552 | } |
48298206 KM |
553 | if (!priv->dparam.pio_dma_border) |
554 | priv->dparam.pio_dma_border = 64; /* 64byte */ | |
f1407d5c | 555 | |
b002ff6e KM |
556 | /* FIXME */ |
557 | /* runtime power control ? */ | |
48298206 | 558 | if (priv->pfunc.get_vbus) |
b002ff6e KM |
559 | usbhsc_flags_set(priv, USBHSF_RUNTIME_PWCTRL); |
560 | ||
f1407d5c KM |
561 | /* |
562 | * priv settings | |
563 | */ | |
53069af3 SY |
564 | priv->irq = irq_res->start; |
565 | if (irq_res->flags & IORESOURCE_IRQ_SHAREABLE) | |
566 | priv->irqflags = IRQF_SHARED; | |
f1407d5c | 567 | priv->pdev = pdev; |
bc57381e | 568 | INIT_DELAYED_WORK(&priv->notify_hotplug_work, usbhsc_notify_hotplug); |
f1407d5c KM |
569 | spin_lock_init(usbhs_priv_to_lock(priv)); |
570 | ||
571 | /* call pipe and module init */ | |
572 | ret = usbhs_pipe_probe(priv); | |
573 | if (ret < 0) | |
58efc77c | 574 | return ret; |
f1407d5c | 575 | |
d3af90a5 | 576 | ret = usbhs_fifo_probe(priv); |
f1407d5c | 577 | if (ret < 0) |
97f93227 | 578 | goto probe_end_pipe_exit; |
f1407d5c | 579 | |
d3af90a5 KM |
580 | ret = usbhs_mod_probe(priv); |
581 | if (ret < 0) | |
582 | goto probe_end_fifo_exit; | |
583 | ||
f1407d5c | 584 | /* dev_set_drvdata should be called after usbhs_mod_init */ |
c9a0552e | 585 | platform_set_drvdata(pdev, priv); |
f1407d5c KM |
586 | |
587 | /* | |
588 | * deviece reset here because | |
589 | * USB device might be used in boot loader. | |
590 | */ | |
591 | usbhs_sys_clock_ctrl(priv, 0); | |
592 | ||
8ecef00f UH |
593 | /* check GPIO determining if USB function should be enabled */ |
594 | if (priv->dparam.enable_gpio) { | |
595 | gpio_request_one(priv->dparam.enable_gpio, GPIOF_IN, NULL); | |
596 | ret = !gpio_get_value(priv->dparam.enable_gpio); | |
597 | gpio_free(priv->dparam.enable_gpio); | |
598 | if (ret) { | |
599 | dev_warn(&pdev->dev, | |
600 | "USB function not selected (GPIO %d)\n", | |
601 | priv->dparam.enable_gpio); | |
602 | ret = -ENOTSUPP; | |
603 | goto probe_end_mod_exit; | |
604 | } | |
605 | } | |
606 | ||
f1407d5c KM |
607 | /* |
608 | * platform call | |
609 | * | |
610 | * USB phy setup might depend on CPU/Board. | |
611 | * If platform has its callback functions, | |
612 | * call it here. | |
613 | */ | |
614 | ret = usbhs_platform_call(priv, hardware_init, pdev); | |
615 | if (ret < 0) { | |
616 | dev_err(&pdev->dev, "platform prove failed.\n"); | |
97f93227 | 617 | goto probe_end_mod_exit; |
f1407d5c KM |
618 | } |
619 | ||
620 | /* reset phy for connection */ | |
621 | usbhs_platform_call(priv, phy_reset, pdev); | |
622 | ||
b002ff6e KM |
623 | /* power control */ |
624 | pm_runtime_enable(&pdev->dev); | |
625 | if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) { | |
626 | usbhsc_power_ctrl(priv, 1); | |
627 | usbhs_mod_autonomy_mode(priv); | |
628 | } | |
629 | ||
f1407d5c KM |
630 | /* |
631 | * manual call notify_hotplug for cold plug | |
632 | */ | |
f1407d5c KM |
633 | ret = usbhsc_drvcllbck_notify_hotplug(pdev); |
634 | if (ret < 0) | |
635 | goto probe_end_call_remove; | |
636 | ||
637 | dev_info(&pdev->dev, "probed\n"); | |
638 | ||
639 | return ret; | |
640 | ||
641 | probe_end_call_remove: | |
642 | usbhs_platform_call(priv, hardware_exit, pdev); | |
f1407d5c KM |
643 | probe_end_mod_exit: |
644 | usbhs_mod_remove(priv); | |
d3af90a5 KM |
645 | probe_end_fifo_exit: |
646 | usbhs_fifo_remove(priv); | |
97f93227 KM |
647 | probe_end_pipe_exit: |
648 | usbhs_pipe_remove(priv); | |
f1407d5c KM |
649 | |
650 | dev_info(&pdev->dev, "probe failed\n"); | |
651 | ||
652 | return ret; | |
653 | } | |
654 | ||
fb4e98ab | 655 | static int usbhs_remove(struct platform_device *pdev) |
f1407d5c | 656 | { |
206dcc2c | 657 | struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev); |
ace0a5f9 | 658 | struct renesas_usbhs_platform_info *info = dev_get_platdata(&pdev->dev); |
af32fe51 | 659 | struct renesas_usbhs_driver_callback *dfunc = &info->driver_callback; |
f1407d5c KM |
660 | |
661 | dev_dbg(&pdev->dev, "usb remove\n"); | |
662 | ||
af32fe51 KM |
663 | dfunc->notify_hotplug = NULL; |
664 | ||
b002ff6e KM |
665 | /* power off */ |
666 | if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) | |
667 | usbhsc_power_ctrl(priv, 0); | |
f1407d5c | 668 | |
b002ff6e | 669 | pm_runtime_disable(&pdev->dev); |
f1407d5c KM |
670 | |
671 | usbhs_platform_call(priv, hardware_exit, pdev); | |
f1407d5c | 672 | usbhs_mod_remove(priv); |
d3af90a5 | 673 | usbhs_fifo_remove(priv); |
97f93227 | 674 | usbhs_pipe_remove(priv); |
f1407d5c KM |
675 | |
676 | return 0; | |
677 | } | |
678 | ||
ca8a282a KM |
679 | static int usbhsc_suspend(struct device *dev) |
680 | { | |
681 | struct usbhs_priv *priv = dev_get_drvdata(dev); | |
682 | struct usbhs_mod *mod = usbhs_mod_get_current(priv); | |
683 | ||
684 | if (mod) { | |
685 | usbhs_mod_call(priv, stop, priv); | |
686 | usbhs_mod_change(priv, -1); | |
687 | } | |
688 | ||
689 | if (mod || !usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) | |
690 | usbhsc_power_ctrl(priv, 0); | |
691 | ||
692 | return 0; | |
693 | } | |
694 | ||
695 | static int usbhsc_resume(struct device *dev) | |
696 | { | |
697 | struct usbhs_priv *priv = dev_get_drvdata(dev); | |
698 | struct platform_device *pdev = usbhs_priv_to_pdev(priv); | |
699 | ||
ca8a282a KM |
700 | if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) |
701 | usbhsc_power_ctrl(priv, 1); | |
702 | ||
5b50d3b5 KM |
703 | usbhs_platform_call(priv, phy_reset, pdev); |
704 | ||
705 | usbhsc_drvcllbck_notify_hotplug(pdev); | |
ca8a282a KM |
706 | |
707 | return 0; | |
708 | } | |
709 | ||
710 | static int usbhsc_runtime_nop(struct device *dev) | |
711 | { | |
712 | /* Runtime PM callback shared between ->runtime_suspend() | |
713 | * and ->runtime_resume(). Simply returns success. | |
714 | * | |
715 | * This driver re-initializes all registers after | |
716 | * pm_runtime_get_sync() anyway so there is no need | |
717 | * to save and restore registers here. | |
718 | */ | |
719 | return 0; | |
720 | } | |
721 | ||
722 | static const struct dev_pm_ops usbhsc_pm_ops = { | |
723 | .suspend = usbhsc_suspend, | |
724 | .resume = usbhsc_resume, | |
725 | .runtime_suspend = usbhsc_runtime_nop, | |
726 | .runtime_resume = usbhsc_runtime_nop, | |
727 | }; | |
728 | ||
f1407d5c KM |
729 | static struct platform_driver renesas_usbhs_driver = { |
730 | .driver = { | |
731 | .name = "renesas_usbhs", | |
ca8a282a | 732 | .pm = &usbhsc_pm_ops, |
b854100e | 733 | .of_match_table = of_match_ptr(usbhs_of_match), |
f1407d5c KM |
734 | }, |
735 | .probe = usbhs_probe, | |
7690417d | 736 | .remove = usbhs_remove, |
f1407d5c KM |
737 | }; |
738 | ||
cc27c96c | 739 | module_platform_driver(renesas_usbhs_driver); |
f1407d5c KM |
740 | |
741 | MODULE_LICENSE("GPL"); | |
742 | MODULE_DESCRIPTION("Renesas USB driver"); | |
743 | MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); |