projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge tag 'imx-drm-fixes-2016-05-24' of git://git.pengutronix.de/git/pza/linux into...
[linux-2.6-block.git] / drivers / usb / renesas_usbhs / common.c
CommitLineData
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 */
76u16 usbhs_read(struct usbhs_priv *priv, u32 reg)
77{
78 return ioread16(priv->base + reg);
79}
80
81void usbhs_write(struct usbhs_priv *priv, u32 reg, u16 data)
82{
83 iowrite16(data, priv->base + reg);
84}
85
86void 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		 96struct 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 104static 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		 109void 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
127void 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 143void usbhs_sys_function_pullup(struct usbhs_priv *priv, int enable)
144{
145 usbhs_bset(priv, SYSCFG, DPRPU, enable ? DPRPU : 0);
146}
147
dfbb7f4f
KM		 148void 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 */
156int 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 */
164void 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
177void 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 */
190void 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
202void usbhs_bus_send_reset(struct usbhs_priv *priv)
203{
204 usbhs_bset(priv, DVSTCTR, (USBRST | UACT), USBRST);
205}
206
75587f52
KM		 207int 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		 223int 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
230static 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 240int 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 */
282void 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 292static 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		 306static 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		 320static 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 */
342static 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 371static 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) {
50297b79 392 cable = extcon_get_cable_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 */
441static 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 449static 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		 467static 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 },
2f1a993a
SH		 484 {
485 .compatible = "renesas,rcar-gen2-usbhs",
486 .data = (void *)USBHS_TYPE_RCAR_GEN2,
487 },
488 {
2f1a993a 489 .compatible = "renesas,rcar-gen3-usbhs",
de18757e 490 .data = (void *)USBHS_TYPE_RCAR_GEN3,
2f1a993a 491 },
b854100e
YS		 492 { },
493};
494MODULE_DEVICE_TABLE(of, usbhs_of_match);
495
496static struct renesas_usbhs_platform_info *usbhs_parse_dt(struct device *dev)
497{
498 struct renesas_usbhs_platform_info *info;
499 struct renesas_usbhs_driver_param *dparam;
500 const struct of_device_id *of_id = of_match_device(usbhs_of_match, dev);
501 u32 tmp;
502 int gpio;
503
504 info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL);
505 if (!info)
506 return NULL;
507
508 dparam = &info->driver_param;
9ae7ce00 509 dparam->type = of_id ? (uintptr_t)of_id->data : 0;
b854100e
YS		 510 if (!of_property_read_u32(dev->of_node, "renesas,buswait", &tmp))
511 dparam->buswait_bwait = tmp;
512 gpio = of_get_named_gpio_flags(dev->of_node, "renesas,enable-gpio", 0,
513 NULL);
514 if (gpio > 0)
515 dparam->enable_gpio = gpio;
516
e0213bc5 517 if (dparam->type == USBHS_TYPE_RCAR_GEN2)
ab330cf3 518 dparam->has_usb_dmac = 1;
ab330cf3 519
b854100e
YS		 520 return info;
521}
522
b7a8d17d 523static int usbhs_probe(struct platform_device *pdev)
f1407d5c 524{
ace0a5f9 525 struct renesas_usbhs_platform_info *info = dev_get_platdata(&pdev->dev);
f1407d5c
KM		 526 struct renesas_usbhs_driver_callback *dfunc;
527 struct usbhs_priv *priv;
53069af3 528 struct resource *res, *irq_res;
f1407d5c
KM		 529 int ret;
530
b854100e
YS		 531 /* check device node */
532 if (pdev->dev.of_node)
533 info = pdev->dev.platform_data = usbhs_parse_dt(&pdev->dev);
534
f1407d5c 535 /* check platform information */
8ecef00f 536 if (!info) {
f1407d5c
KM		 537 dev_err(&pdev->dev, "no platform information\n");
538 return -EINVAL;
539 }
540
541 /* platform data */
53069af3 542 irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
687f16b8 543 if (!irq_res) {
f1407d5c
KM		 544 dev_err(&pdev->dev, "Not enough Renesas USB platform resources.\n");
545 return -ENODEV;
546 }
547
548 /* usb private data */
58efc77c 549 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
b1cb07cd 550 if (!priv)
f1407d5c 551 return -ENOMEM;
f1407d5c 552
687f16b8 553 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
148e1134
TR		 554 priv->base = devm_ioremap_resource(&pdev->dev, res);
555 if (IS_ERR(priv->base))
556 return PTR_ERR(priv->base);
f1407d5c 557
d7b3968d
SS		 558 if (of_property_read_bool(pdev->dev.of_node, "extcon")) {
559 priv->edev = extcon_get_edev_by_phandle(&pdev->dev, 0);
560 if (IS_ERR(priv->edev))
561 return PTR_ERR(priv->edev);
562 }
563
f1407d5c
KM		 564 /*
565 * care platform info
566 */
8ecef00f 567
48298206
KM		 568 memcpy(&priv->dparam,
569 &info->driver_param,
570 sizeof(struct renesas_usbhs_driver_param));
f1407d5c 571
8ecef00f 572 switch (priv->dparam.type) {
e0213bc5 573 case USBHS_TYPE_RCAR_GEN2:
8ecef00f 574 priv->pfunc = usbhs_rcar2_ops;
51f141a9
YS		 575 if (!priv->dparam.pipe_configs) {
576 priv->dparam.pipe_configs = usbhsc_new_pipe;
de18757e
YS		 577 priv->dparam.pipe_size = ARRAY_SIZE(usbhsc_new_pipe);
578 }
579 break;
580 case USBHS_TYPE_RCAR_GEN3:
581 priv->pfunc = usbhs_rcar3_ops;
582 if (!priv->dparam.pipe_configs) {
583 priv->dparam.pipe_configs = usbhsc_new_pipe;
51f141a9 584 priv->dparam.pipe_size = ARRAY_SIZE(usbhsc_new_pipe);
8ecef00f
UH		 585 }
586 break;
587 default:
588 if (!info->platform_callback.get_id) {
589 dev_err(&pdev->dev, "no platform callbacks");
590 return -EINVAL;
591 }
592 memcpy(&priv->pfunc,
593 &info->platform_callback,
594 sizeof(struct renesas_usbhs_platform_callback));
595 break;
596 }
597
f1407d5c
KM		 598 /* set driver callback functions for platform */
599 dfunc = &info->driver_callback;
600 dfunc->notify_hotplug = usbhsc_drvcllbck_notify_hotplug;
601
602 /* set default param if platform doesn't have */
51f141a9
YS		 603 if (!priv->dparam.pipe_configs) {
604 priv->dparam.pipe_configs = usbhsc_default_pipe;
605 priv->dparam.pipe_size = ARRAY_SIZE(usbhsc_default_pipe);
f1407d5c 606 }
48298206
KM		 607 if (!priv->dparam.pio_dma_border)
608 priv->dparam.pio_dma_border = 64; /* 64byte */
f1407d5c 609
b002ff6e
KM		 610 /* FIXME */
611 /* runtime power control ? */
48298206 612 if (priv->pfunc.get_vbus)
b002ff6e
KM		 613 usbhsc_flags_set(priv, USBHSF_RUNTIME_PWCTRL);
614
f1407d5c
KM		 615 /*
616 * priv settings
617 */
53069af3
SY		 618 priv->irq = irq_res->start;
619 if (irq_res->flags & IORESOURCE_IRQ_SHAREABLE)
620 priv->irqflags = IRQF_SHARED;
f1407d5c 621 priv->pdev = pdev;
bc57381e 622 INIT_DELAYED_WORK(&priv->notify_hotplug_work, usbhsc_notify_hotplug);
f1407d5c
KM		 623 spin_lock_init(usbhs_priv_to_lock(priv));
624
625 /* call pipe and module init */
626 ret = usbhs_pipe_probe(priv);
627 if (ret < 0)
58efc77c 628 return ret;
f1407d5c 629
d3af90a5 630 ret = usbhs_fifo_probe(priv);
f1407d5c 631 if (ret < 0)
97f93227 632 goto probe_end_pipe_exit;
f1407d5c 633
d3af90a5
KM		 634 ret = usbhs_mod_probe(priv);
635 if (ret < 0)
636 goto probe_end_fifo_exit;
637
f1407d5c 638 /* dev_set_drvdata should be called after usbhs_mod_init */
c9a0552e 639 platform_set_drvdata(pdev, priv);
f1407d5c
KM		 640
641 /*
642 * deviece reset here because
643 * USB device might be used in boot loader.
644 */
645 usbhs_sys_clock_ctrl(priv, 0);
646
8ecef00f
UH		 647 /* check GPIO determining if USB function should be enabled */
648 if (priv->dparam.enable_gpio) {
649 gpio_request_one(priv->dparam.enable_gpio, GPIOF_IN, NULL);
650 ret = !gpio_get_value(priv->dparam.enable_gpio);
651 gpio_free(priv->dparam.enable_gpio);
652 if (ret) {
653 dev_warn(&pdev->dev,
654 "USB function not selected (GPIO %d)\n",
655 priv->dparam.enable_gpio);
656 ret = -ENOTSUPP;
657 goto probe_end_mod_exit;
658 }
659 }
660
f1407d5c
KM		 661 /*
662 * platform call
663 *
664 * USB phy setup might depend on CPU/Board.
665 * If platform has its callback functions,
666 * call it here.
667 */
668 ret = usbhs_platform_call(priv, hardware_init, pdev);
669 if (ret < 0) {
48ac1e57 670 dev_err(&pdev->dev, "platform init failed.\n");
97f93227 671 goto probe_end_mod_exit;
f1407d5c
KM		 672 }
673
674 /* reset phy for connection */
675 usbhs_platform_call(priv, phy_reset, pdev);
676
b002ff6e
KM		 677 /* power control */
678 pm_runtime_enable(&pdev->dev);
679 if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) {
680 usbhsc_power_ctrl(priv, 1);
681 usbhs_mod_autonomy_mode(priv);
682 }
683
f1407d5c
KM		 684 /*
685 * manual call notify_hotplug for cold plug
686 */
368504c0 687 usbhsc_drvcllbck_notify_hotplug(pdev);
f1407d5c
KM		 688
689 dev_info(&pdev->dev, "probed\n");
690
691 return ret;
692
f1407d5c
KM		 693probe_end_mod_exit:
694 usbhs_mod_remove(priv);
d3af90a5
KM		 695probe_end_fifo_exit:
696 usbhs_fifo_remove(priv);
97f93227
KM		 697probe_end_pipe_exit:
698 usbhs_pipe_remove(priv);
f1407d5c
KM		 699
700 dev_info(&pdev->dev, "probe failed\n");
701
702 return ret;
703}
704
fb4e98ab 705static int usbhs_remove(struct platform_device *pdev)
f1407d5c 706{
206dcc2c 707 struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
ace0a5f9 708 struct renesas_usbhs_platform_info *info = dev_get_platdata(&pdev->dev);
af32fe51 709 struct renesas_usbhs_driver_callback *dfunc = &info->driver_callback;
f1407d5c
KM		 710
711 dev_dbg(&pdev->dev, "usb remove\n");
712
af32fe51
KM		 713 dfunc->notify_hotplug = NULL;
714
b002ff6e
KM		 715 /* power off */
716 if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
717 usbhsc_power_ctrl(priv, 0);
f1407d5c 718
b002ff6e 719 pm_runtime_disable(&pdev->dev);
f1407d5c
KM		 720
721 usbhs_platform_call(priv, hardware_exit, pdev);
f1407d5c 722 usbhs_mod_remove(priv);
d3af90a5 723 usbhs_fifo_remove(priv);
97f93227 724 usbhs_pipe_remove(priv);
f1407d5c
KM		 725
726 return 0;
727}
728
ca8a282a
KM		 729static int usbhsc_suspend(struct device *dev)
730{
731 struct usbhs_priv *priv = dev_get_drvdata(dev);
732 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
733
734 if (mod) {
735 usbhs_mod_call(priv, stop, priv);
736 usbhs_mod_change(priv, -1);
737 }
738
739 if (mod || !usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
740 usbhsc_power_ctrl(priv, 0);
741
742 return 0;
743}
744
745static int usbhsc_resume(struct device *dev)
746{
747 struct usbhs_priv *priv = dev_get_drvdata(dev);
748 struct platform_device *pdev = usbhs_priv_to_pdev(priv);
749
ca8a282a
KM		 750 if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
751 usbhsc_power_ctrl(priv, 1);
752
5b50d3b5
KM		 753 usbhs_platform_call(priv, phy_reset, pdev);
754
755 usbhsc_drvcllbck_notify_hotplug(pdev);
ca8a282a
KM		 756
757 return 0;
758}
759
760static int usbhsc_runtime_nop(struct device *dev)
761{
762 /* Runtime PM callback shared between ->runtime_suspend()
763 * and ->runtime_resume(). Simply returns success.
764 *
765 * This driver re-initializes all registers after
766 * pm_runtime_get_sync() anyway so there is no need
767 * to save and restore registers here.
768 */
769 return 0;
770}
771
772static const struct dev_pm_ops usbhsc_pm_ops = {
773 .suspend = usbhsc_suspend,
774 .resume = usbhsc_resume,
775 .runtime_suspend = usbhsc_runtime_nop,
776 .runtime_resume = usbhsc_runtime_nop,
777};
778
f1407d5c
KM		 779static struct platform_driver renesas_usbhs_driver = {
780 .driver = {
781 .name = "renesas_usbhs",
ca8a282a 782 .pm = &usbhsc_pm_ops,
b854100e 783 .of_match_table = of_match_ptr(usbhs_of_match),
f1407d5c
KM		 784 },
785 .probe = usbhs_probe,
7690417d 786 .remove = usbhs_remove,
f1407d5c
KM		 787};
788
cc27c96c 789module_platform_driver(renesas_usbhs_driver);
f1407d5c
KM		 790
791MODULE_LICENSE("GPL");
792MODULE_DESCRIPTION("Renesas USB driver");
793MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
Linux 6.x block layer and io_uring tree(s)