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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" |
de18757e | 28 | #include "rcar3.h" |
f1407d5c | 29 | |
233f519d KM |
30 | /* |
31 | * image of renesas_usbhs | |
32 | * | |
33 | * ex) gadget case | |
34 | ||
35 | * mod.c | |
36 | * mod_gadget.c | |
37 | * mod_host.c pipe.c fifo.c | |
38 | * | |
39 | * +-------+ +-----------+ | |
40 | * | pipe0 |------>| fifo pio | | |
41 | * +------------+ +-------+ +-----------+ | |
42 | * | mod_gadget |=====> | pipe1 |--+ | |
43 | * +------------+ +-------+ | +-----------+ | |
44 | * | pipe2 | | +-| fifo dma0 | | |
45 | * +------------+ +-------+ | | +-----------+ | |
46 | * | mod_host | | pipe3 |<-|--+ | |
47 | * +------------+ +-------+ | +-----------+ | |
48 | * | .... | +--->| fifo dma1 | | |
49 | * | .... | +-----------+ | |
50 | */ | |
51 | ||
52 | ||
b002ff6e KM |
53 | #define USBHSF_RUNTIME_PWCTRL (1 << 0) |
54 | ||
55 | /* status */ | |
56 | #define usbhsc_flags_init(p) do {(p)->flags = 0; } while (0) | |
57 | #define usbhsc_flags_set(p, b) ((p)->flags |= (b)) | |
58 | #define usbhsc_flags_clr(p, b) ((p)->flags &= ~(b)) | |
59 | #define usbhsc_flags_has(p, b) ((p)->flags & (b)) | |
60 | ||
f1407d5c KM |
61 | /* |
62 | * platform call back | |
63 | * | |
64 | * renesas usb support platform callback function. | |
65 | * Below macro call it. | |
66 | * if platform doesn't have callback, it return 0 (no error) | |
67 | */ | |
68 | #define usbhs_platform_call(priv, func, args...)\ | |
69 | (!(priv) ? -ENODEV : \ | |
48298206 KM |
70 | !((priv)->pfunc.func) ? 0 : \ |
71 | (priv)->pfunc.func(args)) | |
f1407d5c KM |
72 | |
73 | /* | |
74 | * common functions | |
75 | */ | |
76 | u16 usbhs_read(struct usbhs_priv *priv, u32 reg) | |
77 | { | |
78 | return ioread16(priv->base + reg); | |
79 | } | |
80 | ||
81 | void usbhs_write(struct usbhs_priv *priv, u32 reg, u16 data) | |
82 | { | |
83 | iowrite16(data, priv->base + reg); | |
84 | } | |
85 | ||
86 | void usbhs_bset(struct usbhs_priv *priv, u32 reg, u16 mask, u16 data) | |
87 | { | |
88 | u16 val = usbhs_read(priv, reg); | |
89 | ||
90 | val &= ~mask; | |
91 | val |= data & mask; | |
92 | ||
93 | usbhs_write(priv, reg, val); | |
94 | } | |
95 | ||
206dcc2c KM |
96 | struct usbhs_priv *usbhs_pdev_to_priv(struct platform_device *pdev) |
97 | { | |
98 | return dev_get_drvdata(&pdev->dev); | |
99 | } | |
100 | ||
f1407d5c KM |
101 | /* |
102 | * syscfg functions | |
103 | */ | |
76190152 | 104 | static void usbhs_sys_clock_ctrl(struct usbhs_priv *priv, int enable) |
f1407d5c KM |
105 | { |
106 | usbhs_bset(priv, SYSCFG, SCKE, enable ? SCKE : 0); | |
107 | } | |
108 | ||
f1407d5c KM |
109 | void usbhs_sys_host_ctrl(struct usbhs_priv *priv, int enable) |
110 | { | |
3244a7b4 KM |
111 | u16 mask = DCFM | DRPD | DPRPU | HSE | USBE; |
112 | u16 val = DCFM | DRPD | HSE | USBE; | |
f427eb64 KM |
113 | int has_otg = usbhs_get_dparam(priv, has_otg); |
114 | ||
115 | if (has_otg) | |
116 | usbhs_bset(priv, DVSTCTR, (EXTLP | PWEN), (EXTLP | PWEN)); | |
f1407d5c KM |
117 | |
118 | /* | |
119 | * if enable | |
120 | * | |
121 | * - select Host mode | |
122 | * - D+ Line/D- Line Pull-down | |
123 | */ | |
124 | usbhs_bset(priv, SYSCFG, mask, enable ? val : 0); | |
125 | } | |
126 | ||
127 | void usbhs_sys_function_ctrl(struct usbhs_priv *priv, int enable) | |
128 | { | |
3244a7b4 | 129 | u16 mask = DCFM | DRPD | DPRPU | HSE | USBE; |
04a5def3 | 130 | u16 val = HSE | USBE; |
f1407d5c KM |
131 | |
132 | /* | |
133 | * if enable | |
134 | * | |
135 | * - select Function mode | |
04a5def3 TK |
136 | * - D+ Line Pull-up is disabled |
137 | * When D+ Line Pull-up is enabled, | |
138 | * calling usbhs_sys_function_pullup(,1) | |
f1407d5c KM |
139 | */ |
140 | usbhs_bset(priv, SYSCFG, mask, enable ? val : 0); | |
141 | } | |
142 | ||
4cd2f599 KM |
143 | void usbhs_sys_function_pullup(struct usbhs_priv *priv, int enable) |
144 | { | |
145 | usbhs_bset(priv, SYSCFG, DPRPU, enable ? DPRPU : 0); | |
146 | } | |
147 | ||
dfbb7f4f KM |
148 | void usbhs_sys_set_test_mode(struct usbhs_priv *priv, u16 mode) |
149 | { | |
150 | usbhs_write(priv, TESTMODE, mode); | |
151 | } | |
152 | ||
f1407d5c KM |
153 | /* |
154 | * frame functions | |
155 | */ | |
156 | int usbhs_frame_get_num(struct usbhs_priv *priv) | |
157 | { | |
158 | return usbhs_read(priv, FRMNUM) & FRNM_MASK; | |
159 | } | |
160 | ||
ef8bedb9 KM |
161 | /* |
162 | * usb request functions | |
163 | */ | |
164 | void usbhs_usbreq_get_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req) | |
165 | { | |
166 | u16 val; | |
167 | ||
168 | val = usbhs_read(priv, USBREQ); | |
169 | req->bRequest = (val >> 8) & 0xFF; | |
170 | req->bRequestType = (val >> 0) & 0xFF; | |
171 | ||
172 | req->wValue = usbhs_read(priv, USBVAL); | |
173 | req->wIndex = usbhs_read(priv, USBINDX); | |
174 | req->wLength = usbhs_read(priv, USBLENG); | |
175 | } | |
176 | ||
177 | void usbhs_usbreq_set_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req) | |
178 | { | |
179 | usbhs_write(priv, USBREQ, (req->bRequest << 8) | req->bRequestType); | |
180 | usbhs_write(priv, USBVAL, req->wValue); | |
181 | usbhs_write(priv, USBINDX, req->wIndex); | |
182 | usbhs_write(priv, USBLENG, req->wLength); | |
183 | ||
184 | usbhs_bset(priv, DCPCTR, SUREQ, SUREQ); | |
185 | } | |
186 | ||
258485d9 KM |
187 | /* |
188 | * bus/vbus functions | |
189 | */ | |
190 | void usbhs_bus_send_sof_enable(struct usbhs_priv *priv) | |
191 | { | |
a9be4a45 KM |
192 | u16 status = usbhs_read(priv, DVSTCTR) & (USBRST | UACT); |
193 | ||
194 | if (status != USBRST) { | |
195 | struct device *dev = usbhs_priv_to_dev(priv); | |
196 | dev_err(dev, "usbhs should be reset\n"); | |
197 | } | |
198 | ||
258485d9 KM |
199 | usbhs_bset(priv, DVSTCTR, (USBRST | UACT), UACT); |
200 | } | |
201 | ||
202 | void usbhs_bus_send_reset(struct usbhs_priv *priv) | |
203 | { | |
204 | usbhs_bset(priv, DVSTCTR, (USBRST | UACT), USBRST); | |
205 | } | |
206 | ||
75587f52 KM |
207 | int usbhs_bus_get_speed(struct usbhs_priv *priv) |
208 | { | |
209 | u16 dvstctr = usbhs_read(priv, DVSTCTR); | |
210 | ||
211 | switch (RHST & dvstctr) { | |
212 | case RHST_LOW_SPEED: | |
213 | return USB_SPEED_LOW; | |
214 | case RHST_FULL_SPEED: | |
215 | return USB_SPEED_FULL; | |
216 | case RHST_HIGH_SPEED: | |
217 | return USB_SPEED_HIGH; | |
218 | } | |
219 | ||
220 | return USB_SPEED_UNKNOWN; | |
221 | } | |
222 | ||
258485d9 KM |
223 | int usbhs_vbus_ctrl(struct usbhs_priv *priv, int enable) |
224 | { | |
225 | struct platform_device *pdev = usbhs_priv_to_pdev(priv); | |
226 | ||
227 | return usbhs_platform_call(priv, set_vbus, pdev, enable); | |
228 | } | |
229 | ||
230 | static void usbhsc_bus_init(struct usbhs_priv *priv) | |
231 | { | |
232 | usbhs_write(priv, DVSTCTR, 0); | |
233 | ||
234 | usbhs_vbus_ctrl(priv, 0); | |
235 | } | |
236 | ||
eb05191f KM |
237 | /* |
238 | * device configuration | |
239 | */ | |
3dd49268 | 240 | int usbhs_set_device_config(struct usbhs_priv *priv, int devnum, |
eb05191f KM |
241 | u16 upphub, u16 hubport, u16 speed) |
242 | { | |
243 | struct device *dev = usbhs_priv_to_dev(priv); | |
244 | u16 usbspd = 0; | |
245 | u32 reg = DEVADD0 + (2 * devnum); | |
246 | ||
247 | if (devnum > 10) { | |
248 | dev_err(dev, "cannot set speed to unknown device %d\n", devnum); | |
249 | return -EIO; | |
250 | } | |
251 | ||
252 | if (upphub > 0xA) { | |
253 | dev_err(dev, "unsupported hub number %d\n", upphub); | |
254 | return -EIO; | |
255 | } | |
256 | ||
257 | switch (speed) { | |
258 | case USB_SPEED_LOW: | |
259 | usbspd = USBSPD_SPEED_LOW; | |
260 | break; | |
261 | case USB_SPEED_FULL: | |
262 | usbspd = USBSPD_SPEED_FULL; | |
263 | break; | |
264 | case USB_SPEED_HIGH: | |
265 | usbspd = USBSPD_SPEED_HIGH; | |
266 | break; | |
267 | default: | |
268 | dev_err(dev, "unsupported speed %d\n", speed); | |
269 | return -EIO; | |
270 | } | |
271 | ||
272 | usbhs_write(priv, reg, UPPHUB(upphub) | | |
273 | HUBPORT(hubport)| | |
274 | USBSPD(usbspd)); | |
275 | ||
276 | return 0; | |
277 | } | |
278 | ||
ab330cf3 YS |
279 | /* |
280 | * interrupt functions | |
281 | */ | |
282 | void usbhs_xxxsts_clear(struct usbhs_priv *priv, u16 sts_reg, u16 bit) | |
283 | { | |
284 | u16 pipe_mask = (u16)GENMASK(usbhs_get_dparam(priv, pipe_size), 0); | |
285 | ||
286 | usbhs_write(priv, sts_reg, ~(1 << bit) & pipe_mask); | |
287 | } | |
288 | ||
f1407d5c KM |
289 | /* |
290 | * local functions | |
291 | */ | |
11935de5 | 292 | static void usbhsc_set_buswait(struct usbhs_priv *priv) |
f1407d5c KM |
293 | { |
294 | int wait = usbhs_get_dparam(priv, buswait_bwait); | |
f1407d5c | 295 | |
11935de5 KM |
296 | /* set bus wait if platform have */ |
297 | if (wait) | |
298 | usbhs_bset(priv, BUSWAIT, 0x000F, wait); | |
f1407d5c KM |
299 | } |
300 | ||
301 | /* | |
302 | * platform default param | |
303 | */ | |
8ecef00f UH |
304 | |
305 | /* commonly used on old SH-Mobile SoCs */ | |
51f141a9 YS |
306 | static struct renesas_usbhs_driver_pipe_config usbhsc_default_pipe[] = { |
307 | RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_CONTROL, 64, 0x00, false), | |
308 | RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_ISOC, 1024, 0x08, false), | |
309 | RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_ISOC, 1024, 0x18, false), | |
310 | RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x28, true), | |
311 | RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x38, true), | |
312 | RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x48, true), | |
313 | RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_INT, 64, 0x04, false), | |
314 | RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_INT, 64, 0x05, false), | |
315 | RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_INT, 64, 0x06, false), | |
316 | RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_INT, 64, 0x07, false), | |
f1407d5c KM |
317 | }; |
318 | ||
8ecef00f | 319 | /* commonly used on newer SH-Mobile and R-Car SoCs */ |
51f141a9 YS |
320 | static struct renesas_usbhs_driver_pipe_config usbhsc_new_pipe[] = { |
321 | RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_CONTROL, 64, 0x00, false), | |
322 | RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_ISOC, 1024, 0x08, true), | |
323 | RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_ISOC, 1024, 0x28, true), | |
324 | RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x48, true), | |
325 | RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x58, true), | |
326 | RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x68, true), | |
327 | RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_INT, 64, 0x04, false), | |
328 | RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_INT, 64, 0x05, false), | |
329 | RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_INT, 64, 0x06, false), | |
330 | RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x78, true), | |
331 | RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x88, true), | |
332 | RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x98, true), | |
333 | RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0xa8, true), | |
334 | RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0xb8, true), | |
335 | RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0xc8, true), | |
336 | RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0xd8, true), | |
8ecef00f UH |
337 | }; |
338 | ||
f1407d5c | 339 | /* |
6e267da8 KM |
340 | * power control |
341 | */ | |
342 | static void usbhsc_power_ctrl(struct usbhs_priv *priv, int enable) | |
343 | { | |
f1ee56a0 | 344 | struct platform_device *pdev = usbhs_priv_to_pdev(priv); |
6e267da8 KM |
345 | struct device *dev = usbhs_priv_to_dev(priv); |
346 | ||
347 | if (enable) { | |
348 | /* enable PM */ | |
349 | pm_runtime_get_sync(dev); | |
350 | ||
f1ee56a0 KM |
351 | /* enable platform power */ |
352 | usbhs_platform_call(priv, power_ctrl, pdev, priv->base, enable); | |
353 | ||
6e267da8 KM |
354 | /* USB on */ |
355 | usbhs_sys_clock_ctrl(priv, enable); | |
6e267da8 KM |
356 | } else { |
357 | /* USB off */ | |
6e267da8 KM |
358 | usbhs_sys_clock_ctrl(priv, enable); |
359 | ||
f1ee56a0 KM |
360 | /* disable platform power */ |
361 | usbhs_platform_call(priv, power_ctrl, pdev, priv->base, enable); | |
362 | ||
6e267da8 KM |
363 | /* disable PM */ |
364 | pm_runtime_put_sync(dev); | |
365 | } | |
366 | } | |
367 | ||
368 | /* | |
ca8a282a | 369 | * hotplug |
f1407d5c | 370 | */ |
ca8a282a | 371 | static void usbhsc_hotplug(struct usbhs_priv *priv) |
f1407d5c | 372 | { |
f1407d5c KM |
373 | struct platform_device *pdev = usbhs_priv_to_pdev(priv); |
374 | struct usbhs_mod *mod = usbhs_mod_get_current(priv); | |
375 | int id; | |
376 | int enable; | |
d7b3968d | 377 | int cable; |
f1407d5c KM |
378 | int ret; |
379 | ||
380 | /* | |
381 | * get vbus status from platform | |
382 | */ | |
383 | enable = usbhs_platform_call(priv, get_vbus, pdev); | |
384 | ||
385 | /* | |
386 | * get id from platform | |
387 | */ | |
388 | id = usbhs_platform_call(priv, get_id, pdev); | |
389 | ||
390 | if (enable && !mod) { | |
d7b3968d | 391 | if (priv->edev) { |
ea07b8cf | 392 | cable = extcon_get_state(priv->edev, EXTCON_USB_HOST); |
d7b3968d SS |
393 | if ((cable > 0 && id != USBHS_HOST) || |
394 | (!cable && id != USBHS_GADGET)) { | |
395 | dev_info(&pdev->dev, | |
396 | "USB cable plugged in doesn't match the selected role!\n"); | |
397 | return; | |
398 | } | |
399 | } | |
400 | ||
f1407d5c KM |
401 | ret = usbhs_mod_change(priv, id); |
402 | if (ret < 0) | |
403 | return; | |
404 | ||
405 | dev_dbg(&pdev->dev, "%s enable\n", __func__); | |
406 | ||
6e267da8 | 407 | /* power on */ |
b002ff6e KM |
408 | if (usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) |
409 | usbhsc_power_ctrl(priv, enable); | |
f1407d5c | 410 | |
258485d9 KM |
411 | /* bus init */ |
412 | usbhsc_set_buswait(priv); | |
413 | usbhsc_bus_init(priv); | |
414 | ||
f1407d5c KM |
415 | /* module start */ |
416 | usbhs_mod_call(priv, start, priv); | |
417 | ||
418 | } else if (!enable && mod) { | |
419 | dev_dbg(&pdev->dev, "%s disable\n", __func__); | |
420 | ||
421 | /* module stop */ | |
422 | usbhs_mod_call(priv, stop, priv); | |
423 | ||
258485d9 KM |
424 | /* bus init */ |
425 | usbhsc_bus_init(priv); | |
426 | ||
6e267da8 | 427 | /* power off */ |
b002ff6e KM |
428 | if (usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) |
429 | usbhsc_power_ctrl(priv, enable); | |
f1407d5c KM |
430 | |
431 | usbhs_mod_change(priv, -1); | |
432 | ||
433 | /* reset phy for next connection */ | |
434 | usbhs_platform_call(priv, phy_reset, pdev); | |
435 | } | |
436 | } | |
437 | ||
ca8a282a KM |
438 | /* |
439 | * notify hotplug | |
440 | */ | |
441 | static void usbhsc_notify_hotplug(struct work_struct *work) | |
442 | { | |
443 | struct usbhs_priv *priv = container_of(work, | |
444 | struct usbhs_priv, | |
445 | notify_hotplug_work.work); | |
446 | usbhsc_hotplug(priv); | |
447 | } | |
448 | ||
b4fcea2a | 449 | static int usbhsc_drvcllbck_notify_hotplug(struct platform_device *pdev) |
f1407d5c | 450 | { |
206dcc2c | 451 | struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev); |
bc57381e | 452 | int delay = usbhs_get_dparam(priv, detection_delay); |
f1407d5c KM |
453 | |
454 | /* | |
455 | * This functions will be called in interrupt. | |
456 | * To make sure safety context, | |
457 | * use workqueue for usbhs_notify_hotplug | |
458 | */ | |
a49a88f1 KM |
459 | schedule_delayed_work(&priv->notify_hotplug_work, |
460 | msecs_to_jiffies(delay)); | |
f1407d5c KM |
461 | return 0; |
462 | } | |
463 | ||
464 | /* | |
465 | * platform functions | |
466 | */ | |
b854100e YS |
467 | static const struct of_device_id usbhs_of_match[] = { |
468 | { | |
469 | .compatible = "renesas,usbhs-r8a7790", | |
e0213bc5 | 470 | .data = (void *)USBHS_TYPE_RCAR_GEN2, |
b854100e YS |
471 | }, |
472 | { | |
473 | .compatible = "renesas,usbhs-r8a7791", | |
e0213bc5 | 474 | .data = (void *)USBHS_TYPE_RCAR_GEN2, |
b854100e | 475 | }, |
af6e613b YS |
476 | { |
477 | .compatible = "renesas,usbhs-r8a7794", | |
478 | .data = (void *)USBHS_TYPE_RCAR_GEN2, | |
479 | }, | |
f5f6afa8 | 480 | { |
f5f6afa8 | 481 | .compatible = "renesas,usbhs-r8a7795", |
de18757e | 482 | .data = (void *)USBHS_TYPE_RCAR_GEN3, |
f5f6afa8 | 483 | }, |
aae819e1 YS |
484 | { |
485 | .compatible = "renesas,usbhs-r8a7796", | |
486 | .data = (void *)USBHS_TYPE_RCAR_GEN3, | |
487 | }, | |
2f1a993a SH |
488 | { |
489 | .compatible = "renesas,rcar-gen2-usbhs", | |
490 | .data = (void *)USBHS_TYPE_RCAR_GEN2, | |
491 | }, | |
492 | { | |
2f1a993a | 493 | .compatible = "renesas,rcar-gen3-usbhs", |
de18757e | 494 | .data = (void *)USBHS_TYPE_RCAR_GEN3, |
2f1a993a | 495 | }, |
b854100e YS |
496 | { }, |
497 | }; | |
498 | MODULE_DEVICE_TABLE(of, usbhs_of_match); | |
499 | ||
500 | static struct renesas_usbhs_platform_info *usbhs_parse_dt(struct device *dev) | |
501 | { | |
502 | struct renesas_usbhs_platform_info *info; | |
503 | struct renesas_usbhs_driver_param *dparam; | |
504 | const struct of_device_id *of_id = of_match_device(usbhs_of_match, dev); | |
505 | u32 tmp; | |
506 | int gpio; | |
507 | ||
508 | info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL); | |
509 | if (!info) | |
510 | return NULL; | |
511 | ||
512 | dparam = &info->driver_param; | |
9ae7ce00 | 513 | dparam->type = of_id ? (uintptr_t)of_id->data : 0; |
b854100e YS |
514 | if (!of_property_read_u32(dev->of_node, "renesas,buswait", &tmp)) |
515 | dparam->buswait_bwait = tmp; | |
516 | gpio = of_get_named_gpio_flags(dev->of_node, "renesas,enable-gpio", 0, | |
517 | NULL); | |
518 | if (gpio > 0) | |
519 | dparam->enable_gpio = gpio; | |
520 | ||
772ce812 YS |
521 | if (dparam->type == USBHS_TYPE_RCAR_GEN2 || |
522 | dparam->type == USBHS_TYPE_RCAR_GEN3) | |
ab330cf3 | 523 | dparam->has_usb_dmac = 1; |
ab330cf3 | 524 | |
b854100e YS |
525 | return info; |
526 | } | |
527 | ||
b7a8d17d | 528 | static int usbhs_probe(struct platform_device *pdev) |
f1407d5c | 529 | { |
ace0a5f9 | 530 | struct renesas_usbhs_platform_info *info = dev_get_platdata(&pdev->dev); |
f1407d5c KM |
531 | struct renesas_usbhs_driver_callback *dfunc; |
532 | struct usbhs_priv *priv; | |
53069af3 | 533 | struct resource *res, *irq_res; |
f1407d5c KM |
534 | int ret; |
535 | ||
b854100e YS |
536 | /* check device node */ |
537 | if (pdev->dev.of_node) | |
538 | info = pdev->dev.platform_data = usbhs_parse_dt(&pdev->dev); | |
539 | ||
f1407d5c | 540 | /* check platform information */ |
8ecef00f | 541 | if (!info) { |
f1407d5c KM |
542 | dev_err(&pdev->dev, "no platform information\n"); |
543 | return -EINVAL; | |
544 | } | |
545 | ||
546 | /* platform data */ | |
53069af3 | 547 | irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
687f16b8 | 548 | if (!irq_res) { |
f1407d5c KM |
549 | dev_err(&pdev->dev, "Not enough Renesas USB platform resources.\n"); |
550 | return -ENODEV; | |
551 | } | |
552 | ||
553 | /* usb private data */ | |
58efc77c | 554 | priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); |
b1cb07cd | 555 | if (!priv) |
f1407d5c | 556 | return -ENOMEM; |
f1407d5c | 557 | |
687f16b8 | 558 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
148e1134 TR |
559 | priv->base = devm_ioremap_resource(&pdev->dev, res); |
560 | if (IS_ERR(priv->base)) | |
561 | return PTR_ERR(priv->base); | |
f1407d5c | 562 | |
d7b3968d SS |
563 | if (of_property_read_bool(pdev->dev.of_node, "extcon")) { |
564 | priv->edev = extcon_get_edev_by_phandle(&pdev->dev, 0); | |
565 | if (IS_ERR(priv->edev)) | |
566 | return PTR_ERR(priv->edev); | |
567 | } | |
568 | ||
f1407d5c KM |
569 | /* |
570 | * care platform info | |
571 | */ | |
8ecef00f | 572 | |
48298206 KM |
573 | memcpy(&priv->dparam, |
574 | &info->driver_param, | |
575 | sizeof(struct renesas_usbhs_driver_param)); | |
f1407d5c | 576 | |
8ecef00f | 577 | switch (priv->dparam.type) { |
e0213bc5 | 578 | case USBHS_TYPE_RCAR_GEN2: |
8ecef00f | 579 | priv->pfunc = usbhs_rcar2_ops; |
51f141a9 YS |
580 | if (!priv->dparam.pipe_configs) { |
581 | priv->dparam.pipe_configs = usbhsc_new_pipe; | |
de18757e YS |
582 | priv->dparam.pipe_size = ARRAY_SIZE(usbhsc_new_pipe); |
583 | } | |
584 | break; | |
585 | case USBHS_TYPE_RCAR_GEN3: | |
586 | priv->pfunc = usbhs_rcar3_ops; | |
587 | if (!priv->dparam.pipe_configs) { | |
588 | priv->dparam.pipe_configs = usbhsc_new_pipe; | |
51f141a9 | 589 | priv->dparam.pipe_size = ARRAY_SIZE(usbhsc_new_pipe); |
8ecef00f UH |
590 | } |
591 | break; | |
592 | default: | |
593 | if (!info->platform_callback.get_id) { | |
594 | dev_err(&pdev->dev, "no platform callbacks"); | |
595 | return -EINVAL; | |
596 | } | |
597 | memcpy(&priv->pfunc, | |
598 | &info->platform_callback, | |
599 | sizeof(struct renesas_usbhs_platform_callback)); | |
600 | break; | |
601 | } | |
602 | ||
f1407d5c KM |
603 | /* set driver callback functions for platform */ |
604 | dfunc = &info->driver_callback; | |
605 | dfunc->notify_hotplug = usbhsc_drvcllbck_notify_hotplug; | |
606 | ||
607 | /* set default param if platform doesn't have */ | |
51f141a9 YS |
608 | if (!priv->dparam.pipe_configs) { |
609 | priv->dparam.pipe_configs = usbhsc_default_pipe; | |
610 | priv->dparam.pipe_size = ARRAY_SIZE(usbhsc_default_pipe); | |
f1407d5c | 611 | } |
48298206 KM |
612 | if (!priv->dparam.pio_dma_border) |
613 | priv->dparam.pio_dma_border = 64; /* 64byte */ | |
f1407d5c | 614 | |
b002ff6e KM |
615 | /* FIXME */ |
616 | /* runtime power control ? */ | |
48298206 | 617 | if (priv->pfunc.get_vbus) |
b002ff6e KM |
618 | usbhsc_flags_set(priv, USBHSF_RUNTIME_PWCTRL); |
619 | ||
f1407d5c KM |
620 | /* |
621 | * priv settings | |
622 | */ | |
53069af3 SY |
623 | priv->irq = irq_res->start; |
624 | if (irq_res->flags & IORESOURCE_IRQ_SHAREABLE) | |
625 | priv->irqflags = IRQF_SHARED; | |
f1407d5c | 626 | priv->pdev = pdev; |
bc57381e | 627 | INIT_DELAYED_WORK(&priv->notify_hotplug_work, usbhsc_notify_hotplug); |
f1407d5c KM |
628 | spin_lock_init(usbhs_priv_to_lock(priv)); |
629 | ||
630 | /* call pipe and module init */ | |
631 | ret = usbhs_pipe_probe(priv); | |
632 | if (ret < 0) | |
58efc77c | 633 | return ret; |
f1407d5c | 634 | |
d3af90a5 | 635 | ret = usbhs_fifo_probe(priv); |
f1407d5c | 636 | if (ret < 0) |
97f93227 | 637 | goto probe_end_pipe_exit; |
f1407d5c | 638 | |
d3af90a5 KM |
639 | ret = usbhs_mod_probe(priv); |
640 | if (ret < 0) | |
641 | goto probe_end_fifo_exit; | |
642 | ||
f1407d5c | 643 | /* dev_set_drvdata should be called after usbhs_mod_init */ |
c9a0552e | 644 | platform_set_drvdata(pdev, priv); |
f1407d5c KM |
645 | |
646 | /* | |
647 | * deviece reset here because | |
648 | * USB device might be used in boot loader. | |
649 | */ | |
650 | usbhs_sys_clock_ctrl(priv, 0); | |
651 | ||
8ecef00f UH |
652 | /* check GPIO determining if USB function should be enabled */ |
653 | if (priv->dparam.enable_gpio) { | |
654 | gpio_request_one(priv->dparam.enable_gpio, GPIOF_IN, NULL); | |
655 | ret = !gpio_get_value(priv->dparam.enable_gpio); | |
656 | gpio_free(priv->dparam.enable_gpio); | |
657 | if (ret) { | |
658 | dev_warn(&pdev->dev, | |
659 | "USB function not selected (GPIO %d)\n", | |
660 | priv->dparam.enable_gpio); | |
661 | ret = -ENOTSUPP; | |
662 | goto probe_end_mod_exit; | |
663 | } | |
664 | } | |
665 | ||
f1407d5c KM |
666 | /* |
667 | * platform call | |
668 | * | |
669 | * USB phy setup might depend on CPU/Board. | |
670 | * If platform has its callback functions, | |
671 | * call it here. | |
672 | */ | |
673 | ret = usbhs_platform_call(priv, hardware_init, pdev); | |
674 | if (ret < 0) { | |
48ac1e57 | 675 | dev_err(&pdev->dev, "platform init failed.\n"); |
97f93227 | 676 | goto probe_end_mod_exit; |
f1407d5c KM |
677 | } |
678 | ||
679 | /* reset phy for connection */ | |
680 | usbhs_platform_call(priv, phy_reset, pdev); | |
681 | ||
b002ff6e KM |
682 | /* power control */ |
683 | pm_runtime_enable(&pdev->dev); | |
684 | if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) { | |
685 | usbhsc_power_ctrl(priv, 1); | |
686 | usbhs_mod_autonomy_mode(priv); | |
687 | } | |
688 | ||
f1407d5c KM |
689 | /* |
690 | * manual call notify_hotplug for cold plug | |
691 | */ | |
368504c0 | 692 | usbhsc_drvcllbck_notify_hotplug(pdev); |
f1407d5c KM |
693 | |
694 | dev_info(&pdev->dev, "probed\n"); | |
695 | ||
696 | return ret; | |
697 | ||
f1407d5c KM |
698 | probe_end_mod_exit: |
699 | usbhs_mod_remove(priv); | |
d3af90a5 KM |
700 | probe_end_fifo_exit: |
701 | usbhs_fifo_remove(priv); | |
97f93227 KM |
702 | probe_end_pipe_exit: |
703 | usbhs_pipe_remove(priv); | |
f1407d5c | 704 | |
0d799503 | 705 | dev_info(&pdev->dev, "probe failed (%d)\n", ret); |
f1407d5c KM |
706 | |
707 | return ret; | |
708 | } | |
709 | ||
fb4e98ab | 710 | static int usbhs_remove(struct platform_device *pdev) |
f1407d5c | 711 | { |
206dcc2c | 712 | struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev); |
ace0a5f9 | 713 | struct renesas_usbhs_platform_info *info = dev_get_platdata(&pdev->dev); |
af32fe51 | 714 | struct renesas_usbhs_driver_callback *dfunc = &info->driver_callback; |
f1407d5c KM |
715 | |
716 | dev_dbg(&pdev->dev, "usb remove\n"); | |
717 | ||
af32fe51 KM |
718 | dfunc->notify_hotplug = NULL; |
719 | ||
b002ff6e KM |
720 | /* power off */ |
721 | if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) | |
722 | usbhsc_power_ctrl(priv, 0); | |
f1407d5c | 723 | |
b002ff6e | 724 | pm_runtime_disable(&pdev->dev); |
f1407d5c KM |
725 | |
726 | usbhs_platform_call(priv, hardware_exit, pdev); | |
f1407d5c | 727 | usbhs_mod_remove(priv); |
d3af90a5 | 728 | usbhs_fifo_remove(priv); |
97f93227 | 729 | usbhs_pipe_remove(priv); |
f1407d5c KM |
730 | |
731 | return 0; | |
732 | } | |
733 | ||
ca8a282a KM |
734 | static int usbhsc_suspend(struct device *dev) |
735 | { | |
736 | struct usbhs_priv *priv = dev_get_drvdata(dev); | |
737 | struct usbhs_mod *mod = usbhs_mod_get_current(priv); | |
738 | ||
739 | if (mod) { | |
740 | usbhs_mod_call(priv, stop, priv); | |
741 | usbhs_mod_change(priv, -1); | |
742 | } | |
743 | ||
744 | if (mod || !usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) | |
745 | usbhsc_power_ctrl(priv, 0); | |
746 | ||
747 | return 0; | |
748 | } | |
749 | ||
750 | static int usbhsc_resume(struct device *dev) | |
751 | { | |
752 | struct usbhs_priv *priv = dev_get_drvdata(dev); | |
753 | struct platform_device *pdev = usbhs_priv_to_pdev(priv); | |
754 | ||
59a0879a | 755 | if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) { |
ca8a282a | 756 | usbhsc_power_ctrl(priv, 1); |
59a0879a YS |
757 | usbhs_mod_autonomy_mode(priv); |
758 | } | |
ca8a282a | 759 | |
5b50d3b5 KM |
760 | usbhs_platform_call(priv, phy_reset, pdev); |
761 | ||
762 | usbhsc_drvcllbck_notify_hotplug(pdev); | |
ca8a282a KM |
763 | |
764 | return 0; | |
765 | } | |
766 | ||
767 | static int usbhsc_runtime_nop(struct device *dev) | |
768 | { | |
769 | /* Runtime PM callback shared between ->runtime_suspend() | |
770 | * and ->runtime_resume(). Simply returns success. | |
771 | * | |
772 | * This driver re-initializes all registers after | |
773 | * pm_runtime_get_sync() anyway so there is no need | |
774 | * to save and restore registers here. | |
775 | */ | |
776 | return 0; | |
777 | } | |
778 | ||
779 | static const struct dev_pm_ops usbhsc_pm_ops = { | |
780 | .suspend = usbhsc_suspend, | |
781 | .resume = usbhsc_resume, | |
782 | .runtime_suspend = usbhsc_runtime_nop, | |
783 | .runtime_resume = usbhsc_runtime_nop, | |
784 | }; | |
785 | ||
f1407d5c KM |
786 | static struct platform_driver renesas_usbhs_driver = { |
787 | .driver = { | |
788 | .name = "renesas_usbhs", | |
ca8a282a | 789 | .pm = &usbhsc_pm_ops, |
b854100e | 790 | .of_match_table = of_match_ptr(usbhs_of_match), |
f1407d5c KM |
791 | }, |
792 | .probe = usbhs_probe, | |
7690417d | 793 | .remove = usbhs_remove, |
f1407d5c KM |
794 | }; |
795 | ||
cc27c96c | 796 | module_platform_driver(renesas_usbhs_driver); |
f1407d5c KM |
797 | |
798 | MODULE_LICENSE("GPL"); | |
799 | MODULE_DESCRIPTION("Renesas USB driver"); | |
800 | MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); |