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17#include <linux/signal.h>
18#include <linux/jiffies.h>
19#include <linux/platform_device.h>
20#include <linux/clk.h>
21#include <linux/err.h>
22#include <linux/gpio.h>
23
24#include <asm/io.h>
25#include <asm/mach-types.h>
26
27#include <mach/mux.h>
28
29#include <mach/hardware.h>
30#include <mach/irqs.h>
31#include <mach/usb.h>
32
33
34
35#define OMAP1510_LB_MEMSIZE 32
36#define OMAP1510_LB_CLOCK_DIV 0xfffec10c
37#define OMAP1510_LB_MMU_CTL 0xfffec208
38#define OMAP1510_LB_MMU_LCK 0xfffec224
39#define OMAP1510_LB_MMU_LD_TLB 0xfffec228
40#define OMAP1510_LB_MMU_CAM_H 0xfffec22c
41#define OMAP1510_LB_MMU_CAM_L 0xfffec230
42#define OMAP1510_LB_MMU_RAM_H 0xfffec234
43#define OMAP1510_LB_MMU_RAM_L 0xfffec238
44
45
46#ifndef CONFIG_ARCH_OMAP
47#error "This file is OMAP bus glue. CONFIG_OMAP must be defined."
48#endif
49
50#ifdef CONFIG_TPS65010
51#include <linux/i2c/tps65010.h>
52#else
53
54#define LOW 0
55#define HIGH 1
56
57#define GPIO1 1
58
59static inline int tps65010_set_gpio_out_value(unsigned gpio, unsigned value)
60{
61 return 0;
62}
63
64#endif
65
66extern int usb_disabled(void);
67extern int ocpi_enable(void);
68
69static struct clk *usb_host_ck;
70static struct clk *usb_dc_ck;
71static int host_enabled;
72static int host_initialized;
73
74static void omap_ohci_clock_power(int on)
75{
76 if (on) {
77 clk_enable(usb_dc_ck);
78 clk_enable(usb_host_ck);
79
80 udelay(100);
81 } else {
82 clk_disable(usb_host_ck);
83 clk_disable(usb_dc_ck);
84 }
85}
86
87
88
89
90
91static int omap_ohci_transceiver_power(int on)
92{
93 if (on) {
94 if (machine_is_omap_innovator() && cpu_is_omap1510())
95 __raw_writeb(__raw_readb(INNOVATOR_FPGA_CAM_USB_CONTROL)
96 | ((1 << 5) | (1 << 3)),
97 INNOVATOR_FPGA_CAM_USB_CONTROL);
98 else if (machine_is_omap_osk())
99 tps65010_set_gpio_out_value(GPIO1, LOW);
100 } else {
101 if (machine_is_omap_innovator() && cpu_is_omap1510())
102 __raw_writeb(__raw_readb(INNOVATOR_FPGA_CAM_USB_CONTROL)
103 & ~((1 << 5) | (1 << 3)),
104 INNOVATOR_FPGA_CAM_USB_CONTROL);
105 else if (machine_is_omap_osk())
106 tps65010_set_gpio_out_value(GPIO1, HIGH);
107 }
108
109 return 0;
110}
111
112#ifdef CONFIG_ARCH_OMAP15XX
113
114
115
116static int omap_1510_local_bus_power(int on)
117{
118 if (on) {
119 omap_writel((1 << 1) | (1 << 0), OMAP1510_LB_MMU_CTL);
120 udelay(200);
121 } else {
122 omap_writel(0, OMAP1510_LB_MMU_CTL);
123 }
124
125 return 0;
126}
127
128
129
130
131
132
133
134
135static int omap_1510_local_bus_init(void)
136{
137 unsigned int tlb;
138 unsigned long lbaddr, physaddr;
139
140 omap_writel((omap_readl(OMAP1510_LB_CLOCK_DIV) & 0xfffffff8) | 0x4,
141 OMAP1510_LB_CLOCK_DIV);
142
143
144 for (tlb = 0; tlb < OMAP1510_LB_MEMSIZE; tlb++) {
145 lbaddr = tlb * 0x00100000 + OMAP1510_LB_OFFSET;
146 physaddr = tlb * 0x00100000 + PHYS_OFFSET;
147 omap_writel((lbaddr & 0x0fffffff) >> 22, OMAP1510_LB_MMU_CAM_H);
148 omap_writel(((lbaddr & 0x003ffc00) >> 6) | 0xc,
149 OMAP1510_LB_MMU_CAM_L);
150 omap_writel(physaddr >> 16, OMAP1510_LB_MMU_RAM_H);
151 omap_writel((physaddr & 0x0000fc00) | 0x300, OMAP1510_LB_MMU_RAM_L);
152 omap_writel(tlb << 4, OMAP1510_LB_MMU_LCK);
153 omap_writel(0x1, OMAP1510_LB_MMU_LD_TLB);
154 }
155
156
157 omap_writel(omap_readl(OMAP1510_LB_MMU_CTL) | (1 << 3), OMAP1510_LB_MMU_CTL);
158 udelay(200);
159
160 return 0;
161}
162#else
163#define omap_1510_local_bus_power(x) {}
164#define omap_1510_local_bus_init() {}
165#endif
166
167#ifdef CONFIG_USB_OTG
168
169static void start_hnp(struct ohci_hcd *ohci)
170{
171 struct usb_hcd *hcd = ohci_to_hcd(ohci);
172 const unsigned port = hcd->self.otg_port - 1;
173 unsigned long flags;
174 u32 l;
175
176 otg_start_hnp(hcd->phy->otg);
177
178 local_irq_save(flags);
179 hcd->phy->state = OTG_STATE_A_SUSPEND;
180 writel (RH_PS_PSS, &ohci->regs->roothub.portstatus [port]);
181 l = omap_readl(OTG_CTRL);
182 l &= ~OTG_A_BUSREQ;
183 omap_writel(l, OTG_CTRL);
184 local_irq_restore(flags);
185}
186
187#endif
188
189
190
191static int ohci_omap_init(struct usb_hcd *hcd)
192{
193 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
194 struct omap_usb_config *config = hcd->self.controller->platform_data;
195 int need_transceiver = (config->otg != 0);
196 int ret;
197
198 dev_dbg(hcd->self.controller, "starting USB Controller\n");
199
200 if (config->otg) {
201 ohci_to_hcd(ohci)->self.otg_port = config->otg;
202
203 ohci_to_hcd(ohci)->power_budget = 8;
204 }
205
206
207 need_transceiver = need_transceiver
208 || machine_is_omap_h2() || machine_is_omap_h3();
209
210
211 if (config->ocpi_enable)
212 config->ocpi_enable();
213
214#ifdef CONFIG_USB_OTG
215 if (need_transceiver) {
216 hcd->phy = usb_get_phy(USB_PHY_TYPE_USB2);
217 if (!IS_ERR_OR_NULL(hcd->phy)) {
218 int status = otg_set_host(hcd->phy->otg,
219 &ohci_to_hcd(ohci)->self);
220 dev_dbg(hcd->self.controller, "init %s phy, status %d\n",
221 hcd->phy->label, status);
222 if (status) {
223 usb_put_phy(hcd->phy);
224 return status;
225 }
226 } else {
227 dev_err(hcd->self.controller, "can't find phy\n");
228 return -ENODEV;
229 }
230 ohci->start_hnp = start_hnp;
231 }
232#endif
233
234 omap_ohci_clock_power(1);
235
236 if (cpu_is_omap15xx()) {
237 omap_1510_local_bus_power(1);
238 omap_1510_local_bus_init();
239 }
240
241 if ((ret = ohci_init(ohci)) < 0)
242 return ret;
243
244
245 if (machine_is_omap_osk() || machine_is_omap_innovator()) {
246 u32 rh = roothub_a (ohci);
247
248
249 rh &= ~RH_A_NPS;
250
251
252 if (machine_is_omap_osk()) {
253 ohci_to_hcd(ohci)->power_budget = 250;
254
255 rh &= ~RH_A_NOCP;
256
257
258 omap_cfg_reg(W8_1610_GPIO9);
259 gpio_request(9, "OHCI overcurrent");
260 gpio_direction_input(9);
261
262
263 omap_cfg_reg(W4_USB_HIGHZ);
264 }
265 ohci_writel(ohci, rh, &ohci->regs->roothub.a);
266 ohci->flags &= ~OHCI_QUIRK_HUB_POWER;
267 } else if (machine_is_nokia770()) {
268
269
270 ohci_to_hcd(ohci)->power_budget = 0;
271 }
272
273
274 omap_ohci_transceiver_power(1);
275
276
277
278
279
280
281 return 0;
282}
283
284static void ohci_omap_stop(struct usb_hcd *hcd)
285{
286 dev_dbg(hcd->self.controller, "stopping USB Controller\n");
287 ohci_stop(hcd);
288 omap_ohci_clock_power(0);
289}
290
291
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293
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299
300
301
302static int usb_hcd_omap_probe (const struct hc_driver *driver,
303 struct platform_device *pdev)
304{
305 int retval, irq;
306 struct usb_hcd *hcd = 0;
307 struct ohci_hcd *ohci;
308
309 if (pdev->num_resources != 2) {
310 printk(KERN_ERR "hcd probe: invalid num_resources: %i\n",
311 pdev->num_resources);
312 return -ENODEV;
313 }
314
315 if (pdev->resource[0].flags != IORESOURCE_MEM
316 || pdev->resource[1].flags != IORESOURCE_IRQ) {
317 printk(KERN_ERR "hcd probe: invalid resource type\n");
318 return -ENODEV;
319 }
320
321 usb_host_ck = clk_get(&pdev->dev, "usb_hhc_ck");
322 if (IS_ERR(usb_host_ck))
323 return PTR_ERR(usb_host_ck);
324
325 if (!cpu_is_omap15xx())
326 usb_dc_ck = clk_get(&pdev->dev, "usb_dc_ck");
327 else
328 usb_dc_ck = clk_get(&pdev->dev, "lb_ck");
329
330 if (IS_ERR(usb_dc_ck)) {
331 clk_put(usb_host_ck);
332 return PTR_ERR(usb_dc_ck);
333 }
334
335
336 hcd = usb_create_hcd (driver, &pdev->dev, dev_name(&pdev->dev));
337 if (!hcd) {
338 retval = -ENOMEM;
339 goto err0;
340 }
341 hcd->rsrc_start = pdev->resource[0].start;
342 hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
343
344 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
345 dev_dbg(&pdev->dev, "request_mem_region failed\n");
346 retval = -EBUSY;
347 goto err1;
348 }
349
350 hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
351 if (!hcd->regs) {
352 dev_err(&pdev->dev, "can't ioremap OHCI HCD\n");
353 retval = -ENOMEM;
354 goto err2;
355 }
356
357 ohci = hcd_to_ohci(hcd);
358 ohci_hcd_init(ohci);
359
360 host_initialized = 0;
361 host_enabled = 1;
362
363 irq = platform_get_irq(pdev, 0);
364 if (irq < 0) {
365 retval = -ENXIO;
366 goto err3;
367 }
368 retval = usb_add_hcd(hcd, irq, 0);
369 if (retval)
370 goto err3;
371
372 host_initialized = 1;
373
374 if (!host_enabled)
375 omap_ohci_clock_power(0);
376
377 return 0;
378err3:
379 iounmap(hcd->regs);
380err2:
381 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
382err1:
383 usb_put_hcd(hcd);
384err0:
385 clk_put(usb_dc_ck);
386 clk_put(usb_host_ck);
387 return retval;
388}
389
390
391
392
393
394
395
396
397
398
399
400
401
402static inline void
403usb_hcd_omap_remove (struct usb_hcd *hcd, struct platform_device *pdev)
404{
405 usb_remove_hcd(hcd);
406 if (!IS_ERR_OR_NULL(hcd->phy)) {
407 (void) otg_set_host(hcd->phy->otg, 0);
408 usb_put_phy(hcd->phy);
409 }
410 if (machine_is_omap_osk())
411 gpio_free(9);
412 iounmap(hcd->regs);
413 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
414 usb_put_hcd(hcd);
415 clk_put(usb_dc_ck);
416 clk_put(usb_host_ck);
417}
418
419
420
421static int
422ohci_omap_start (struct usb_hcd *hcd)
423{
424 struct omap_usb_config *config;
425 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
426 int ret;
427
428 if (!host_enabled)
429 return 0;
430 config = hcd->self.controller->platform_data;
431 if (config->otg || config->rwc) {
432 ohci->hc_control = OHCI_CTRL_RWC;
433 writel(OHCI_CTRL_RWC, &ohci->regs->control);
434 }
435
436 if ((ret = ohci_run (ohci)) < 0) {
437 dev_err(hcd->self.controller, "can't start\n");
438 ohci_stop (hcd);
439 return ret;
440 }
441 return 0;
442}
443
444
445
446static const struct hc_driver ohci_omap_hc_driver = {
447 .description = hcd_name,
448 .product_desc = "OMAP OHCI",
449 .hcd_priv_size = sizeof(struct ohci_hcd),
450
451
452
453
454 .irq = ohci_irq,
455 .flags = HCD_USB11 | HCD_MEMORY,
456
457
458
459
460 .reset = ohci_omap_init,
461 .start = ohci_omap_start,
462 .stop = ohci_omap_stop,
463 .shutdown = ohci_shutdown,
464
465
466
467
468 .urb_enqueue = ohci_urb_enqueue,
469 .urb_dequeue = ohci_urb_dequeue,
470 .endpoint_disable = ohci_endpoint_disable,
471
472
473
474
475 .get_frame_number = ohci_get_frame,
476
477
478
479
480 .hub_status_data = ohci_hub_status_data,
481 .hub_control = ohci_hub_control,
482#ifdef CONFIG_PM
483 .bus_suspend = ohci_bus_suspend,
484 .bus_resume = ohci_bus_resume,
485#endif
486 .start_port_reset = ohci_start_port_reset,
487};
488
489
490
491static int ohci_hcd_omap_drv_probe(struct platform_device *dev)
492{
493 return usb_hcd_omap_probe(&ohci_omap_hc_driver, dev);
494}
495
496static int ohci_hcd_omap_drv_remove(struct platform_device *dev)
497{
498 struct usb_hcd *hcd = platform_get_drvdata(dev);
499
500 usb_hcd_omap_remove(hcd, dev);
501
502 return 0;
503}
504
505
506
507#ifdef CONFIG_PM
508
509static int ohci_omap_suspend(struct platform_device *dev, pm_message_t message)
510{
511 struct ohci_hcd *ohci = hcd_to_ohci(platform_get_drvdata(dev));
512
513 if (time_before(jiffies, ohci->next_statechange))
514 msleep(5);
515 ohci->next_statechange = jiffies;
516
517 omap_ohci_clock_power(0);
518 return 0;
519}
520
521static int ohci_omap_resume(struct platform_device *dev)
522{
523 struct usb_hcd *hcd = platform_get_drvdata(dev);
524 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
525
526 if (time_before(jiffies, ohci->next_statechange))
527 msleep(5);
528 ohci->next_statechange = jiffies;
529
530 omap_ohci_clock_power(1);
531 ohci_resume(hcd, false);
532 return 0;
533}
534
535#endif
536
537
538
539
540
541
542static struct platform_driver ohci_hcd_omap_driver = {
543 .probe = ohci_hcd_omap_drv_probe,
544 .remove = ohci_hcd_omap_drv_remove,
545 .shutdown = usb_hcd_platform_shutdown,
546#ifdef CONFIG_PM
547 .suspend = ohci_omap_suspend,
548 .resume = ohci_omap_resume,
549#endif
550 .driver = {
551 .owner = THIS_MODULE,
552 .name = "ohci",
553 },
554};
555
556MODULE_ALIAS("platform:ohci");
557