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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 */
17#include <linux/io.h>
18#include <linux/module.h>
19#include <linux/pm_runtime.h>
20#include <linux/slab.h>
21#include <linux/sysfs.h>
22#include "./common.h"
23
24/*
25 * image of renesas_usbhs
26 *
27 * ex) gadget case
28
29 * mod.c
30 * mod_gadget.c
31 * mod_host.c pipe.c fifo.c
32 *
33 * +-------+ +-----------+
34 * | pipe0 |------>| fifo pio |
35 * +------------+ +-------+ +-----------+
36 * | mod_gadget |=====> | pipe1 |--+
37 * +------------+ +-------+ | +-----------+
38 * | pipe2 | | +-| fifo dma0 |
39 * +------------+ +-------+ | | +-----------+
40 * | mod_host | | pipe3 |<-|--+
41 * +------------+ +-------+ | +-----------+
42 * | .... | +--->| fifo dma1 |
43 * | .... | +-----------+
44 */
45
46
47#define USBHSF_RUNTIME_PWCTRL (1 << 0)
48
49/* status */
50#define usbhsc_flags_init(p) do {(p)->flags = 0; } while (0)
51#define usbhsc_flags_set(p, b) ((p)->flags |= (b))
52#define usbhsc_flags_clr(p, b) ((p)->flags &= ~(b))
53#define usbhsc_flags_has(p, b) ((p)->flags & (b))
54
55/*
56 * platform call back
57 *
58 * renesas usb support platform callback function.
59 * Below macro call it.
60 * if platform doesn't have callback, it return 0 (no error)
61 */
62#define usbhs_platform_call(priv, func, args...)\
63 (!(priv) ? -ENODEV : \
64 !((priv)->pfunc->func) ? 0 : \
65 (priv)->pfunc->func(args))
66
67/*
68 * common functions
69 */
70u16 usbhs_read(struct usbhs_priv *priv, u32 reg)
71{
72 return ioread16(priv->base + reg);
73}
74
75void usbhs_write(struct usbhs_priv *priv, u32 reg, u16 data)
76{
77 iowrite16(data, priv->base + reg);
78}
79
80void usbhs_bset(struct usbhs_priv *priv, u32 reg, u16 mask, u16 data)
81{
82 u16 val = usbhs_read(priv, reg);
83
84 val &= ~mask;
85 val |= data & mask;
86
87 usbhs_write(priv, reg, val);
88}
89
90struct usbhs_priv *usbhs_pdev_to_priv(struct platform_device *pdev)
91{
92 return dev_get_drvdata(&pdev->dev);
93}
94
95/*
96 * syscfg functions
97 */
98void usbhs_sys_clock_ctrl(struct usbhs_priv *priv, int enable)
99{
100 usbhs_bset(priv, SYSCFG, SCKE, enable ? SCKE : 0);
101}
102
103void usbhs_sys_hispeed_ctrl(struct usbhs_priv *priv, int enable)
104{
105 usbhs_bset(priv, SYSCFG, HSE, enable ? HSE : 0);
106}
107
108void usbhs_sys_usb_ctrl(struct usbhs_priv *priv, int enable)
109{
110 usbhs_bset(priv, SYSCFG, USBE, enable ? USBE : 0);
111}
112
113void usbhs_sys_host_ctrl(struct usbhs_priv *priv, int enable)
114{
115 u16 mask = DCFM | DRPD | DPRPU;
116 u16 val = DCFM | DRPD;
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{
129 u16 mask = DCFM | DRPD | DPRPU;
130 u16 val = DPRPU;
131
132 /*
133 * if enable
134 *
135 * - select Function mode
136 * - D+ Line Pull-up
137 */
138 usbhs_bset(priv, SYSCFG, mask, enable ? val : 0);
139}
140
141/*
142 * frame functions
143 */
144int usbhs_frame_get_num(struct usbhs_priv *priv)
145{
146 return usbhs_read(priv, FRMNUM) & FRNM_MASK;
147}
148
149/*
150 * local functions
151 */
152static void usbhsc_bus_ctrl(struct usbhs_priv *priv, int enable)
153{
154 int wait = usbhs_get_dparam(priv, buswait_bwait);
155 u16 data = 0;
156
157 if (enable) {
158 /* set bus wait if platform have */
159 if (wait)
160 usbhs_bset(priv, BUSWAIT, 0x000F, wait);
161 }
162 usbhs_write(priv, DVSTCTR, data);
163}
164
165/*
166 * platform default param
167 */
168static u32 usbhsc_default_pipe_type[] = {
169 USB_ENDPOINT_XFER_CONTROL,
170 USB_ENDPOINT_XFER_ISOC,
171 USB_ENDPOINT_XFER_ISOC,
172 USB_ENDPOINT_XFER_BULK,
173 USB_ENDPOINT_XFER_BULK,
174 USB_ENDPOINT_XFER_BULK,
175 USB_ENDPOINT_XFER_INT,
176 USB_ENDPOINT_XFER_INT,
177 USB_ENDPOINT_XFER_INT,
178 USB_ENDPOINT_XFER_INT,
179};
180
181/*
182 * power control
183 */
184static void usbhsc_power_ctrl(struct usbhs_priv *priv, int enable)
185{
186 struct device *dev = usbhs_priv_to_dev(priv);
187
188 if (enable) {
189 /* enable PM */
190 pm_runtime_get_sync(dev);
191
192 /* USB on */
193 usbhs_sys_clock_ctrl(priv, enable);
194 usbhsc_bus_ctrl(priv, enable);
195 } else {
196 /* USB off */
197 usbhsc_bus_ctrl(priv, enable);
198 usbhs_sys_clock_ctrl(priv, enable);
199
200 /* disable PM */
201 pm_runtime_put_sync(dev);
202 }
203}
204
205/*
206 * notify hotplug
207 */
208static void usbhsc_notify_hotplug(struct work_struct *work)
209{
210 struct usbhs_priv *priv = container_of(work,
211 struct usbhs_priv,
212 notify_hotplug_work.work);
213 struct platform_device *pdev = usbhs_priv_to_pdev(priv);
214 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
215 int id;
216 int enable;
217 int ret;
218
219 /*
220 * get vbus status from platform
221 */
222 enable = usbhs_platform_call(priv, get_vbus, pdev);
223
224 /*
225 * get id from platform
226 */
227 id = usbhs_platform_call(priv, get_id, pdev);
228
229 if (enable && !mod) {
230 ret = usbhs_mod_change(priv, id);
231 if (ret < 0)
232 return;
233
234 dev_dbg(&pdev->dev, "%s enable\n", __func__);
235
236 /* power on */
237 if (usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
238 usbhsc_power_ctrl(priv, enable);
239
240 /* module start */
241 usbhs_mod_call(priv, start, priv);
242
243 } else if (!enable && mod) {
244 dev_dbg(&pdev->dev, "%s disable\n", __func__);
245
246 /* module stop */
247 usbhs_mod_call(priv, stop, priv);
248
249 /* power off */
250 if (usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
251 usbhsc_power_ctrl(priv, enable);
252
253 usbhs_mod_change(priv, -1);
254
255 /* reset phy for next connection */
256 usbhs_platform_call(priv, phy_reset, pdev);
257 }
258}
259
260int usbhsc_drvcllbck_notify_hotplug(struct platform_device *pdev)
261{
262 struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
263 int delay = usbhs_get_dparam(priv, detection_delay);
264
265 /*
266 * This functions will be called in interrupt.
267 * To make sure safety context,
268 * use workqueue for usbhs_notify_hotplug
269 */
270 schedule_delayed_work(&priv->notify_hotplug_work, delay);
271 return 0;
272}
273
274/*
275 * platform functions
276 */
277static int __devinit usbhs_probe(struct platform_device *pdev)
278{
279 struct renesas_usbhs_platform_info *info = pdev->dev.platform_data;
280 struct renesas_usbhs_driver_callback *dfunc;
281 struct usbhs_priv *priv;
282 struct resource *res;
283 unsigned int irq;
284 int ret;
285
286 /* check platform information */
287 if (!info ||
288 !info->platform_callback.get_id) {
289 dev_err(&pdev->dev, "no platform information\n");
290 return -EINVAL;
291 }
292
293 /* platform data */
294 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
295 irq = platform_get_irq(pdev, 0);
296 if (!res || (int)irq <= 0) {
297 dev_err(&pdev->dev, "Not enough Renesas USB platform resources.\n");
298 return -ENODEV;
299 }
300
301 /* usb private data */
302 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
303 if (!priv) {
304 dev_err(&pdev->dev, "Could not allocate priv\n");
305 return -ENOMEM;
306 }
307
308 priv->base = ioremap_nocache(res->start, resource_size(res));
309 if (!priv->base) {
310 dev_err(&pdev->dev, "ioremap error.\n");
311 ret = -ENOMEM;
312 goto probe_end_kfree;
313 }
314
315 /*
316 * care platform info
317 */
318 priv->pfunc = &info->platform_callback;
319 priv->dparam = &info->driver_param;
320
321 /* set driver callback functions for platform */
322 dfunc = &info->driver_callback;
323 dfunc->notify_hotplug = usbhsc_drvcllbck_notify_hotplug;
324
325 /* set default param if platform doesn't have */
326 if (!priv->dparam->pipe_type) {
327 priv->dparam->pipe_type = usbhsc_default_pipe_type;
328 priv->dparam->pipe_size = ARRAY_SIZE(usbhsc_default_pipe_type);
329 }
330 if (!priv->dparam->pio_dma_border)
331 priv->dparam->pio_dma_border = 64; /* 64byte */
332
333 /* FIXME */
334 /* runtime power control ? */
335 if (priv->pfunc->get_vbus)
336 usbhsc_flags_set(priv, USBHSF_RUNTIME_PWCTRL);
337
338 /*
339 * priv settings
340 */
341 priv->irq = irq;
342 priv->pdev = pdev;
343 INIT_DELAYED_WORK(&priv->notify_hotplug_work, usbhsc_notify_hotplug);
344 spin_lock_init(usbhs_priv_to_lock(priv));
345
346 /* call pipe and module init */
347 ret = usbhs_pipe_probe(priv);
348 if (ret < 0)
349 goto probe_end_iounmap;
350
351 ret = usbhs_fifo_probe(priv);
352 if (ret < 0)
353 goto probe_end_pipe_exit;
354
355 ret = usbhs_mod_probe(priv);
356 if (ret < 0)
357 goto probe_end_fifo_exit;
358
359 /* dev_set_drvdata should be called after usbhs_mod_init */
360 dev_set_drvdata(&pdev->dev, priv);
361
362 /*
363 * deviece reset here because
364 * USB device might be used in boot loader.
365 */
366 usbhs_sys_clock_ctrl(priv, 0);
367
368 /*
369 * platform call
370 *
371 * USB phy setup might depend on CPU/Board.
372 * If platform has its callback functions,
373 * call it here.
374 */
375 ret = usbhs_platform_call(priv, hardware_init, pdev);
376 if (ret < 0) {
377 dev_err(&pdev->dev, "platform prove failed.\n");
378 goto probe_end_mod_exit;
379 }
380
381 /* reset phy for connection */
382 usbhs_platform_call(priv, phy_reset, pdev);
383
384 /* power control */
385 pm_runtime_enable(&pdev->dev);
386 if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) {
387 usbhsc_power_ctrl(priv, 1);
388 usbhs_mod_autonomy_mode(priv);
389 }
390
391 /*
392 * manual call notify_hotplug for cold plug
393 */
394 ret = usbhsc_drvcllbck_notify_hotplug(pdev);
395 if (ret < 0)
396 goto probe_end_call_remove;
397
398 dev_info(&pdev->dev, "probed\n");
399
400 return ret;
401
402probe_end_call_remove:
403 usbhs_platform_call(priv, hardware_exit, pdev);
404probe_end_mod_exit:
405 usbhs_mod_remove(priv);
406probe_end_fifo_exit:
407 usbhs_fifo_remove(priv);
408probe_end_pipe_exit:
409 usbhs_pipe_remove(priv);
410probe_end_iounmap:
411 iounmap(priv->base);
412probe_end_kfree:
413 kfree(priv);
414
415 dev_info(&pdev->dev, "probe failed\n");
416
417 return ret;
418}
419
420static int __devexit usbhs_remove(struct platform_device *pdev)
421{
422 struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
423 struct renesas_usbhs_platform_info *info = pdev->dev.platform_data;
424 struct renesas_usbhs_driver_callback *dfunc = &info->driver_callback;
425
426 dev_dbg(&pdev->dev, "usb remove\n");
427
428 dfunc->notify_hotplug = NULL;
429
430 /* power off */
431 if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
432 usbhsc_power_ctrl(priv, 0);
433
434 pm_runtime_disable(&pdev->dev);
435
436 usbhs_platform_call(priv, hardware_exit, pdev);
437 usbhs_mod_remove(priv);
438 usbhs_fifo_remove(priv);
439 usbhs_pipe_remove(priv);
440 iounmap(priv->base);
441 kfree(priv);
442
443 return 0;
444}
445
446static struct platform_driver renesas_usbhs_driver = {
447 .driver = {
448 .name = "renesas_usbhs",
449 },
450 .probe = usbhs_probe,
451 .remove = __devexit_p(usbhs_remove),
452};
453
454static int __init usbhs_init(void)
455{
456 return platform_driver_register(&renesas_usbhs_driver);
457}
458
459static void __exit usbhs_exit(void)
460{
461 platform_driver_unregister(&renesas_usbhs_driver);
462}
463
464module_init(usbhs_init);
465module_exit(usbhs_exit);
466
467MODULE_LICENSE("GPL");
468MODULE_DESCRIPTION("Renesas USB driver");
469MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
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 */
17#include <linux/err.h>
18#include <linux/io.h>
19#include <linux/module.h>
20#include <linux/pm_runtime.h>
21#include <linux/slab.h>
22#include <linux/sysfs.h>
23#include "common.h"
24
25/*
26 * image of renesas_usbhs
27 *
28 * ex) gadget case
29
30 * mod.c
31 * mod_gadget.c
32 * mod_host.c pipe.c fifo.c
33 *
34 * +-------+ +-----------+
35 * | pipe0 |------>| fifo pio |
36 * +------------+ +-------+ +-----------+
37 * | mod_gadget |=====> | pipe1 |--+
38 * +------------+ +-------+ | +-----------+
39 * | pipe2 | | +-| fifo dma0 |
40 * +------------+ +-------+ | | +-----------+
41 * | mod_host | | pipe3 |<-|--+
42 * +------------+ +-------+ | +-----------+
43 * | .... | +--->| fifo dma1 |
44 * | .... | +-----------+
45 */
46
47
48#define USBHSF_RUNTIME_PWCTRL (1 << 0)
49
50/* status */
51#define usbhsc_flags_init(p) do {(p)->flags = 0; } while (0)
52#define usbhsc_flags_set(p, b) ((p)->flags |= (b))
53#define usbhsc_flags_clr(p, b) ((p)->flags &= ~(b))
54#define usbhsc_flags_has(p, b) ((p)->flags & (b))
55
56/*
57 * platform call back
58 *
59 * renesas usb support platform callback function.
60 * Below macro call it.
61 * if platform doesn't have callback, it return 0 (no error)
62 */
63#define usbhs_platform_call(priv, func, args...)\
64 (!(priv) ? -ENODEV : \
65 !((priv)->pfunc.func) ? 0 : \
66 (priv)->pfunc.func(args))
67
68/*
69 * common functions
70 */
71u16 usbhs_read(struct usbhs_priv *priv, u32 reg)
72{
73 return ioread16(priv->base + reg);
74}
75
76void usbhs_write(struct usbhs_priv *priv, u32 reg, u16 data)
77{
78 iowrite16(data, priv->base + reg);
79}
80
81void usbhs_bset(struct usbhs_priv *priv, u32 reg, u16 mask, u16 data)
82{
83 u16 val = usbhs_read(priv, reg);
84
85 val &= ~mask;
86 val |= data & mask;
87
88 usbhs_write(priv, reg, val);
89}
90
91struct usbhs_priv *usbhs_pdev_to_priv(struct platform_device *pdev)
92{
93 return dev_get_drvdata(&pdev->dev);
94}
95
96/*
97 * syscfg functions
98 */
99static void usbhs_sys_clock_ctrl(struct usbhs_priv *priv, int enable)
100{
101 usbhs_bset(priv, SYSCFG, SCKE, enable ? SCKE : 0);
102}
103
104void usbhs_sys_host_ctrl(struct usbhs_priv *priv, int enable)
105{
106 u16 mask = DCFM | DRPD | DPRPU | HSE | USBE;
107 u16 val = DCFM | DRPD | HSE | USBE;
108 int has_otg = usbhs_get_dparam(priv, has_otg);
109
110 if (has_otg)
111 usbhs_bset(priv, DVSTCTR, (EXTLP | PWEN), (EXTLP | PWEN));
112
113 /*
114 * if enable
115 *
116 * - select Host mode
117 * - D+ Line/D- Line Pull-down
118 */
119 usbhs_bset(priv, SYSCFG, mask, enable ? val : 0);
120}
121
122void usbhs_sys_function_ctrl(struct usbhs_priv *priv, int enable)
123{
124 u16 mask = DCFM | DRPD | DPRPU | HSE | USBE;
125 u16 val = DPRPU | HSE | USBE;
126
127 /*
128 * if enable
129 *
130 * - select Function mode
131 * - D+ Line Pull-up
132 */
133 usbhs_bset(priv, SYSCFG, mask, enable ? val : 0);
134}
135
136void usbhs_sys_function_pullup(struct usbhs_priv *priv, int enable)
137{
138 usbhs_bset(priv, SYSCFG, DPRPU, enable ? DPRPU : 0);
139}
140
141void usbhs_sys_set_test_mode(struct usbhs_priv *priv, u16 mode)
142{
143 usbhs_write(priv, TESTMODE, mode);
144}
145
146/*
147 * frame functions
148 */
149int usbhs_frame_get_num(struct usbhs_priv *priv)
150{
151 return usbhs_read(priv, FRMNUM) & FRNM_MASK;
152}
153
154/*
155 * usb request functions
156 */
157void usbhs_usbreq_get_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req)
158{
159 u16 val;
160
161 val = usbhs_read(priv, USBREQ);
162 req->bRequest = (val >> 8) & 0xFF;
163 req->bRequestType = (val >> 0) & 0xFF;
164
165 req->wValue = usbhs_read(priv, USBVAL);
166 req->wIndex = usbhs_read(priv, USBINDX);
167 req->wLength = usbhs_read(priv, USBLENG);
168}
169
170void usbhs_usbreq_set_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req)
171{
172 usbhs_write(priv, USBREQ, (req->bRequest << 8) | req->bRequestType);
173 usbhs_write(priv, USBVAL, req->wValue);
174 usbhs_write(priv, USBINDX, req->wIndex);
175 usbhs_write(priv, USBLENG, req->wLength);
176
177 usbhs_bset(priv, DCPCTR, SUREQ, SUREQ);
178}
179
180/*
181 * bus/vbus functions
182 */
183void usbhs_bus_send_sof_enable(struct usbhs_priv *priv)
184{
185 u16 status = usbhs_read(priv, DVSTCTR) & (USBRST | UACT);
186
187 if (status != USBRST) {
188 struct device *dev = usbhs_priv_to_dev(priv);
189 dev_err(dev, "usbhs should be reset\n");
190 }
191
192 usbhs_bset(priv, DVSTCTR, (USBRST | UACT), UACT);
193}
194
195void usbhs_bus_send_reset(struct usbhs_priv *priv)
196{
197 usbhs_bset(priv, DVSTCTR, (USBRST | UACT), USBRST);
198}
199
200int usbhs_bus_get_speed(struct usbhs_priv *priv)
201{
202 u16 dvstctr = usbhs_read(priv, DVSTCTR);
203
204 switch (RHST & dvstctr) {
205 case RHST_LOW_SPEED:
206 return USB_SPEED_LOW;
207 case RHST_FULL_SPEED:
208 return USB_SPEED_FULL;
209 case RHST_HIGH_SPEED:
210 return USB_SPEED_HIGH;
211 }
212
213 return USB_SPEED_UNKNOWN;
214}
215
216int usbhs_vbus_ctrl(struct usbhs_priv *priv, int enable)
217{
218 struct platform_device *pdev = usbhs_priv_to_pdev(priv);
219
220 return usbhs_platform_call(priv, set_vbus, pdev, enable);
221}
222
223static void usbhsc_bus_init(struct usbhs_priv *priv)
224{
225 usbhs_write(priv, DVSTCTR, 0);
226
227 usbhs_vbus_ctrl(priv, 0);
228}
229
230/*
231 * device configuration
232 */
233int usbhs_set_device_config(struct usbhs_priv *priv, int devnum,
234 u16 upphub, u16 hubport, u16 speed)
235{
236 struct device *dev = usbhs_priv_to_dev(priv);
237 u16 usbspd = 0;
238 u32 reg = DEVADD0 + (2 * devnum);
239
240 if (devnum > 10) {
241 dev_err(dev, "cannot set speed to unknown device %d\n", devnum);
242 return -EIO;
243 }
244
245 if (upphub > 0xA) {
246 dev_err(dev, "unsupported hub number %d\n", upphub);
247 return -EIO;
248 }
249
250 switch (speed) {
251 case USB_SPEED_LOW:
252 usbspd = USBSPD_SPEED_LOW;
253 break;
254 case USB_SPEED_FULL:
255 usbspd = USBSPD_SPEED_FULL;
256 break;
257 case USB_SPEED_HIGH:
258 usbspd = USBSPD_SPEED_HIGH;
259 break;
260 default:
261 dev_err(dev, "unsupported speed %d\n", speed);
262 return -EIO;
263 }
264
265 usbhs_write(priv, reg, UPPHUB(upphub) |
266 HUBPORT(hubport)|
267 USBSPD(usbspd));
268
269 return 0;
270}
271
272/*
273 * local functions
274 */
275static void usbhsc_set_buswait(struct usbhs_priv *priv)
276{
277 int wait = usbhs_get_dparam(priv, buswait_bwait);
278
279 /* set bus wait if platform have */
280 if (wait)
281 usbhs_bset(priv, BUSWAIT, 0x000F, wait);
282}
283
284/*
285 * platform default param
286 */
287static u32 usbhsc_default_pipe_type[] = {
288 USB_ENDPOINT_XFER_CONTROL,
289 USB_ENDPOINT_XFER_ISOC,
290 USB_ENDPOINT_XFER_ISOC,
291 USB_ENDPOINT_XFER_BULK,
292 USB_ENDPOINT_XFER_BULK,
293 USB_ENDPOINT_XFER_BULK,
294 USB_ENDPOINT_XFER_INT,
295 USB_ENDPOINT_XFER_INT,
296 USB_ENDPOINT_XFER_INT,
297 USB_ENDPOINT_XFER_INT,
298};
299
300/*
301 * power control
302 */
303static void usbhsc_power_ctrl(struct usbhs_priv *priv, int enable)
304{
305 struct platform_device *pdev = usbhs_priv_to_pdev(priv);
306 struct device *dev = usbhs_priv_to_dev(priv);
307
308 if (enable) {
309 /* enable PM */
310 pm_runtime_get_sync(dev);
311
312 /* enable platform power */
313 usbhs_platform_call(priv, power_ctrl, pdev, priv->base, enable);
314
315 /* USB on */
316 usbhs_sys_clock_ctrl(priv, enable);
317 } else {
318 /* USB off */
319 usbhs_sys_clock_ctrl(priv, enable);
320
321 /* disable platform power */
322 usbhs_platform_call(priv, power_ctrl, pdev, priv->base, enable);
323
324 /* disable PM */
325 pm_runtime_put_sync(dev);
326 }
327}
328
329/*
330 * hotplug
331 */
332static void usbhsc_hotplug(struct usbhs_priv *priv)
333{
334 struct platform_device *pdev = usbhs_priv_to_pdev(priv);
335 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
336 int id;
337 int enable;
338 int ret;
339
340 /*
341 * get vbus status from platform
342 */
343 enable = usbhs_platform_call(priv, get_vbus, pdev);
344
345 /*
346 * get id from platform
347 */
348 id = usbhs_platform_call(priv, get_id, pdev);
349
350 if (enable && !mod) {
351 ret = usbhs_mod_change(priv, id);
352 if (ret < 0)
353 return;
354
355 dev_dbg(&pdev->dev, "%s enable\n", __func__);
356
357 /* power on */
358 if (usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
359 usbhsc_power_ctrl(priv, enable);
360
361 /* bus init */
362 usbhsc_set_buswait(priv);
363 usbhsc_bus_init(priv);
364
365 /* module start */
366 usbhs_mod_call(priv, start, priv);
367
368 } else if (!enable && mod) {
369 dev_dbg(&pdev->dev, "%s disable\n", __func__);
370
371 /* module stop */
372 usbhs_mod_call(priv, stop, priv);
373
374 /* bus init */
375 usbhsc_bus_init(priv);
376
377 /* power off */
378 if (usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
379 usbhsc_power_ctrl(priv, enable);
380
381 usbhs_mod_change(priv, -1);
382
383 /* reset phy for next connection */
384 usbhs_platform_call(priv, phy_reset, pdev);
385 }
386}
387
388/*
389 * notify hotplug
390 */
391static void usbhsc_notify_hotplug(struct work_struct *work)
392{
393 struct usbhs_priv *priv = container_of(work,
394 struct usbhs_priv,
395 notify_hotplug_work.work);
396 usbhsc_hotplug(priv);
397}
398
399static int usbhsc_drvcllbck_notify_hotplug(struct platform_device *pdev)
400{
401 struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
402 int delay = usbhs_get_dparam(priv, detection_delay);
403
404 /*
405 * This functions will be called in interrupt.
406 * To make sure safety context,
407 * use workqueue for usbhs_notify_hotplug
408 */
409 schedule_delayed_work(&priv->notify_hotplug_work,
410 msecs_to_jiffies(delay));
411 return 0;
412}
413
414/*
415 * platform functions
416 */
417static int usbhs_probe(struct platform_device *pdev)
418{
419 struct renesas_usbhs_platform_info *info = dev_get_platdata(&pdev->dev);
420 struct renesas_usbhs_driver_callback *dfunc;
421 struct usbhs_priv *priv;
422 struct resource *res, *irq_res;
423 int ret;
424
425 /* check platform information */
426 if (!info ||
427 !info->platform_callback.get_id) {
428 dev_err(&pdev->dev, "no platform information\n");
429 return -EINVAL;
430 }
431
432 /* platform data */
433 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
434 irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
435 if (!res || !irq_res) {
436 dev_err(&pdev->dev, "Not enough Renesas USB platform resources.\n");
437 return -ENODEV;
438 }
439
440 /* usb private data */
441 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
442 if (!priv) {
443 dev_err(&pdev->dev, "Could not allocate priv\n");
444 return -ENOMEM;
445 }
446
447 priv->base = devm_ioremap_resource(&pdev->dev, res);
448 if (IS_ERR(priv->base))
449 return PTR_ERR(priv->base);
450
451 /*
452 * care platform info
453 */
454 memcpy(&priv->pfunc,
455 &info->platform_callback,
456 sizeof(struct renesas_usbhs_platform_callback));
457 memcpy(&priv->dparam,
458 &info->driver_param,
459 sizeof(struct renesas_usbhs_driver_param));
460
461 /* set driver callback functions for platform */
462 dfunc = &info->driver_callback;
463 dfunc->notify_hotplug = usbhsc_drvcllbck_notify_hotplug;
464
465 /* set default param if platform doesn't have */
466 if (!priv->dparam.pipe_type) {
467 priv->dparam.pipe_type = usbhsc_default_pipe_type;
468 priv->dparam.pipe_size = ARRAY_SIZE(usbhsc_default_pipe_type);
469 }
470 if (!priv->dparam.pio_dma_border)
471 priv->dparam.pio_dma_border = 64; /* 64byte */
472
473 /* FIXME */
474 /* runtime power control ? */
475 if (priv->pfunc.get_vbus)
476 usbhsc_flags_set(priv, USBHSF_RUNTIME_PWCTRL);
477
478 /*
479 * priv settings
480 */
481 priv->irq = irq_res->start;
482 if (irq_res->flags & IORESOURCE_IRQ_SHAREABLE)
483 priv->irqflags = IRQF_SHARED;
484 priv->pdev = pdev;
485 INIT_DELAYED_WORK(&priv->notify_hotplug_work, usbhsc_notify_hotplug);
486 spin_lock_init(usbhs_priv_to_lock(priv));
487
488 /* call pipe and module init */
489 ret = usbhs_pipe_probe(priv);
490 if (ret < 0)
491 return ret;
492
493 ret = usbhs_fifo_probe(priv);
494 if (ret < 0)
495 goto probe_end_pipe_exit;
496
497 ret = usbhs_mod_probe(priv);
498 if (ret < 0)
499 goto probe_end_fifo_exit;
500
501 /* dev_set_drvdata should be called after usbhs_mod_init */
502 platform_set_drvdata(pdev, priv);
503
504 /*
505 * deviece reset here because
506 * USB device might be used in boot loader.
507 */
508 usbhs_sys_clock_ctrl(priv, 0);
509
510 /*
511 * platform call
512 *
513 * USB phy setup might depend on CPU/Board.
514 * If platform has its callback functions,
515 * call it here.
516 */
517 ret = usbhs_platform_call(priv, hardware_init, pdev);
518 if (ret < 0) {
519 dev_err(&pdev->dev, "platform prove failed.\n");
520 goto probe_end_mod_exit;
521 }
522
523 /* reset phy for connection */
524 usbhs_platform_call(priv, phy_reset, pdev);
525
526 /* power control */
527 pm_runtime_enable(&pdev->dev);
528 if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) {
529 usbhsc_power_ctrl(priv, 1);
530 usbhs_mod_autonomy_mode(priv);
531 }
532
533 /*
534 * manual call notify_hotplug for cold plug
535 */
536 ret = usbhsc_drvcllbck_notify_hotplug(pdev);
537 if (ret < 0)
538 goto probe_end_call_remove;
539
540 dev_info(&pdev->dev, "probed\n");
541
542 return ret;
543
544probe_end_call_remove:
545 usbhs_platform_call(priv, hardware_exit, pdev);
546probe_end_mod_exit:
547 usbhs_mod_remove(priv);
548probe_end_fifo_exit:
549 usbhs_fifo_remove(priv);
550probe_end_pipe_exit:
551 usbhs_pipe_remove(priv);
552
553 dev_info(&pdev->dev, "probe failed\n");
554
555 return ret;
556}
557
558static int usbhs_remove(struct platform_device *pdev)
559{
560 struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
561 struct renesas_usbhs_platform_info *info = dev_get_platdata(&pdev->dev);
562 struct renesas_usbhs_driver_callback *dfunc = &info->driver_callback;
563
564 dev_dbg(&pdev->dev, "usb remove\n");
565
566 dfunc->notify_hotplug = NULL;
567
568 /* power off */
569 if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
570 usbhsc_power_ctrl(priv, 0);
571
572 pm_runtime_disable(&pdev->dev);
573
574 usbhs_platform_call(priv, hardware_exit, pdev);
575 usbhs_mod_remove(priv);
576 usbhs_fifo_remove(priv);
577 usbhs_pipe_remove(priv);
578
579 return 0;
580}
581
582static int usbhsc_suspend(struct device *dev)
583{
584 struct usbhs_priv *priv = dev_get_drvdata(dev);
585 struct usbhs_mod *mod = usbhs_mod_get_current(priv);
586
587 if (mod) {
588 usbhs_mod_call(priv, stop, priv);
589 usbhs_mod_change(priv, -1);
590 }
591
592 if (mod || !usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
593 usbhsc_power_ctrl(priv, 0);
594
595 return 0;
596}
597
598static int usbhsc_resume(struct device *dev)
599{
600 struct usbhs_priv *priv = dev_get_drvdata(dev);
601 struct platform_device *pdev = usbhs_priv_to_pdev(priv);
602
603 if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
604 usbhsc_power_ctrl(priv, 1);
605
606 usbhs_platform_call(priv, phy_reset, pdev);
607
608 usbhsc_drvcllbck_notify_hotplug(pdev);
609
610 return 0;
611}
612
613static int usbhsc_runtime_nop(struct device *dev)
614{
615 /* Runtime PM callback shared between ->runtime_suspend()
616 * and ->runtime_resume(). Simply returns success.
617 *
618 * This driver re-initializes all registers after
619 * pm_runtime_get_sync() anyway so there is no need
620 * to save and restore registers here.
621 */
622 return 0;
623}
624
625static const struct dev_pm_ops usbhsc_pm_ops = {
626 .suspend = usbhsc_suspend,
627 .resume = usbhsc_resume,
628 .runtime_suspend = usbhsc_runtime_nop,
629 .runtime_resume = usbhsc_runtime_nop,
630};
631
632static struct platform_driver renesas_usbhs_driver = {
633 .driver = {
634 .name = "renesas_usbhs",
635 .pm = &usbhsc_pm_ops,
636 },
637 .probe = usbhs_probe,
638 .remove = usbhs_remove,
639};
640
641module_platform_driver(renesas_usbhs_driver);
642
643MODULE_LICENSE("GPL");
644MODULE_DESCRIPTION("Renesas USB driver");
645MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");