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1/*
2 * OHCI HCD (Host Controller Driver) for USB.
3 *
4 * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
5 * (C) Copyright 2000-2005 David Brownell
6 * (C) Copyright 2002 Hewlett-Packard Company
7 *
8 * OMAP Bus Glue
9 *
10 * Modified for OMAP by Tony Lindgren <tony@atomide.com>
11 * Based on the 2.4 OMAP OHCI driver originally done by MontaVista Software Inc.
12 * and on ohci-sa1111.c by Christopher Hoover <ch@hpl.hp.com>
13 *
14 * This file is licenced under the GPL.
15 */
16
17#include <linux/signal.h> /* IRQF_DISABLED */
18#include <linux/jiffies.h>
19#include <linux/platform_device.h>
20#include <linux/clk.h>
21#include <linux/gpio.h>
22
23#include <mach/hardware.h>
24#include <asm/io.h>
25#include <asm/mach-types.h>
26
27#include <plat/mux.h>
28#include <mach/irqs.h>
29#include <plat/fpga.h>
30#include <plat/usb.h>
31
32
33/* OMAP-1510 OHCI has its own MMU for DMA */
34#define OMAP1510_LB_MEMSIZE 32 /* Should be same as SDRAM size */
35#define OMAP1510_LB_CLOCK_DIV 0xfffec10c
36#define OMAP1510_LB_MMU_CTL 0xfffec208
37#define OMAP1510_LB_MMU_LCK 0xfffec224
38#define OMAP1510_LB_MMU_LD_TLB 0xfffec228
39#define OMAP1510_LB_MMU_CAM_H 0xfffec22c
40#define OMAP1510_LB_MMU_CAM_L 0xfffec230
41#define OMAP1510_LB_MMU_RAM_H 0xfffec234
42#define OMAP1510_LB_MMU_RAM_L 0xfffec238
43
44
45#ifndef CONFIG_ARCH_OMAP
46#error "This file is OMAP bus glue. CONFIG_OMAP must be defined."
47#endif
48
49#ifdef CONFIG_TPS65010
50#include <linux/i2c/tps65010.h>
51#else
52
53#define LOW 0
54#define HIGH 1
55
56#define GPIO1 1
57
58static inline int tps65010_set_gpio_out_value(unsigned gpio, unsigned value)
59{
60 return 0;
61}
62
63#endif
64
65extern int usb_disabled(void);
66extern int ocpi_enable(void);
67
68static struct clk *usb_host_ck;
69static struct clk *usb_dc_ck;
70static int host_enabled;
71static int host_initialized;
72
73static void omap_ohci_clock_power(int on)
74{
75 if (on) {
76 clk_enable(usb_dc_ck);
77 clk_enable(usb_host_ck);
78 /* guesstimate for T5 == 1x 32K clock + APLL lock time */
79 udelay(100);
80 } else {
81 clk_disable(usb_host_ck);
82 clk_disable(usb_dc_ck);
83 }
84}
85
86/*
87 * Board specific gang-switched transceiver power on/off.
88 * NOTE: OSK supplies power from DC, not battery.
89 */
90static int omap_ohci_transceiver_power(int on)
91{
92 if (on) {
93 if (machine_is_omap_innovator() && cpu_is_omap1510())
94 fpga_write(fpga_read(INNOVATOR_FPGA_CAM_USB_CONTROL)
95 | ((1 << 5/*usb1*/) | (1 << 3/*usb2*/)),
96 INNOVATOR_FPGA_CAM_USB_CONTROL);
97 else if (machine_is_omap_osk())
98 tps65010_set_gpio_out_value(GPIO1, LOW);
99 } else {
100 if (machine_is_omap_innovator() && cpu_is_omap1510())
101 fpga_write(fpga_read(INNOVATOR_FPGA_CAM_USB_CONTROL)
102 & ~((1 << 5/*usb1*/) | (1 << 3/*usb2*/)),
103 INNOVATOR_FPGA_CAM_USB_CONTROL);
104 else if (machine_is_omap_osk())
105 tps65010_set_gpio_out_value(GPIO1, HIGH);
106 }
107
108 return 0;
109}
110
111#ifdef CONFIG_ARCH_OMAP15XX
112/*
113 * OMAP-1510 specific Local Bus clock on/off
114 */
115static int omap_1510_local_bus_power(int on)
116{
117 if (on) {
118 omap_writel((1 << 1) | (1 << 0), OMAP1510_LB_MMU_CTL);
119 udelay(200);
120 } else {
121 omap_writel(0, OMAP1510_LB_MMU_CTL);
122 }
123
124 return 0;
125}
126
127/*
128 * OMAP-1510 specific Local Bus initialization
129 * NOTE: This assumes 32MB memory size in OMAP1510LB_MEMSIZE.
130 * See also arch/mach-omap/memory.h for __virt_to_dma() and
131 * __dma_to_virt() which need to match with the physical
132 * Local Bus address below.
133 */
134static int omap_1510_local_bus_init(void)
135{
136 unsigned int tlb;
137 unsigned long lbaddr, physaddr;
138
139 omap_writel((omap_readl(OMAP1510_LB_CLOCK_DIV) & 0xfffffff8) | 0x4,
140 OMAP1510_LB_CLOCK_DIV);
141
142 /* Configure the Local Bus MMU table */
143 for (tlb = 0; tlb < OMAP1510_LB_MEMSIZE; tlb++) {
144 lbaddr = tlb * 0x00100000 + OMAP1510_LB_OFFSET;
145 physaddr = tlb * 0x00100000 + PHYS_OFFSET;
146 omap_writel((lbaddr & 0x0fffffff) >> 22, OMAP1510_LB_MMU_CAM_H);
147 omap_writel(((lbaddr & 0x003ffc00) >> 6) | 0xc,
148 OMAP1510_LB_MMU_CAM_L);
149 omap_writel(physaddr >> 16, OMAP1510_LB_MMU_RAM_H);
150 omap_writel((physaddr & 0x0000fc00) | 0x300, OMAP1510_LB_MMU_RAM_L);
151 omap_writel(tlb << 4, OMAP1510_LB_MMU_LCK);
152 omap_writel(0x1, OMAP1510_LB_MMU_LD_TLB);
153 }
154
155 /* Enable the walking table */
156 omap_writel(omap_readl(OMAP1510_LB_MMU_CTL) | (1 << 3), OMAP1510_LB_MMU_CTL);
157 udelay(200);
158
159 return 0;
160}
161#else
162#define omap_1510_local_bus_power(x) {}
163#define omap_1510_local_bus_init() {}
164#endif
165
166#ifdef CONFIG_USB_OTG
167
168static void start_hnp(struct ohci_hcd *ohci)
169{
170 const unsigned port = ohci_to_hcd(ohci)->self.otg_port - 1;
171 unsigned long flags;
172 u32 l;
173
174 otg_start_hnp(ohci->transceiver);
175
176 local_irq_save(flags);
177 ohci->transceiver->state = OTG_STATE_A_SUSPEND;
178 writel (RH_PS_PSS, &ohci->regs->roothub.portstatus [port]);
179 l = omap_readl(OTG_CTRL);
180 l &= ~OTG_A_BUSREQ;
181 omap_writel(l, OTG_CTRL);
182 local_irq_restore(flags);
183}
184
185#endif
186
187/*-------------------------------------------------------------------------*/
188
189static int ohci_omap_init(struct usb_hcd *hcd)
190{
191 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
192 struct omap_usb_config *config = hcd->self.controller->platform_data;
193 int need_transceiver = (config->otg != 0);
194 int ret;
195
196 dev_dbg(hcd->self.controller, "starting USB Controller\n");
197
198 if (config->otg) {
199 ohci_to_hcd(ohci)->self.otg_port = config->otg;
200 /* default/minimum OTG power budget: 8 mA */
201 ohci_to_hcd(ohci)->power_budget = 8;
202 }
203
204 /* boards can use OTG transceivers in non-OTG modes */
205 need_transceiver = need_transceiver
206 || machine_is_omap_h2() || machine_is_omap_h3();
207
208 if (cpu_is_omap16xx())
209 ocpi_enable();
210
211#ifdef CONFIG_USB_OTG
212 if (need_transceiver) {
213 ohci->transceiver = otg_get_transceiver();
214 if (ohci->transceiver) {
215 int status = otg_set_host(ohci->transceiver,
216 &ohci_to_hcd(ohci)->self);
217 dev_dbg(hcd->self.controller, "init %s transceiver, status %d\n",
218 ohci->transceiver->label, status);
219 if (status) {
220 if (ohci->transceiver)
221 put_device(ohci->transceiver->dev);
222 return status;
223 }
224 } else {
225 dev_err(hcd->self.controller, "can't find transceiver\n");
226 return -ENODEV;
227 }
228 ohci->start_hnp = start_hnp;
229 }
230#endif
231
232 omap_ohci_clock_power(1);
233
234 if (cpu_is_omap15xx()) {
235 omap_1510_local_bus_power(1);
236 omap_1510_local_bus_init();
237 }
238
239 if ((ret = ohci_init(ohci)) < 0)
240 return ret;
241
242 /* board-specific power switching and overcurrent support */
243 if (machine_is_omap_osk() || machine_is_omap_innovator()) {
244 u32 rh = roothub_a (ohci);
245
246 /* power switching (ganged by default) */
247 rh &= ~RH_A_NPS;
248
249 /* TPS2045 switch for internal transceiver (port 1) */
250 if (machine_is_omap_osk()) {
251 ohci_to_hcd(ohci)->power_budget = 250;
252
253 rh &= ~RH_A_NOCP;
254
255 /* gpio9 for overcurrent detction */
256 omap_cfg_reg(W8_1610_GPIO9);
257 gpio_request(9, "OHCI overcurrent");
258 gpio_direction_input(9);
259
260 /* for paranoia's sake: disable USB.PUEN */
261 omap_cfg_reg(W4_USB_HIGHZ);
262 }
263 ohci_writel(ohci, rh, &ohci->regs->roothub.a);
264 ohci->flags &= ~OHCI_QUIRK_HUB_POWER;
265 } else if (machine_is_nokia770()) {
266 /* We require a self-powered hub, which should have
267 * plenty of power. */
268 ohci_to_hcd(ohci)->power_budget = 0;
269 }
270
271 /* FIXME khubd hub requests should manage power switching */
272 omap_ohci_transceiver_power(1);
273
274 /* board init will have already handled HMC and mux setup.
275 * any external transceiver should already be initialized
276 * too, so all configured ports use the right signaling now.
277 */
278
279 return 0;
280}
281
282static void ohci_omap_stop(struct usb_hcd *hcd)
283{
284 dev_dbg(hcd->self.controller, "stopping USB Controller\n");
285 ohci_stop(hcd);
286 omap_ohci_clock_power(0);
287}
288
289
290/*-------------------------------------------------------------------------*/
291
292/**
293 * usb_hcd_omap_probe - initialize OMAP-based HCDs
294 * Context: !in_interrupt()
295 *
296 * Allocates basic resources for this USB host controller, and
297 * then invokes the start() method for the HCD associated with it
298 * through the hotplug entry's driver_data.
299 */
300static int usb_hcd_omap_probe (const struct hc_driver *driver,
301 struct platform_device *pdev)
302{
303 int retval, irq;
304 struct usb_hcd *hcd = 0;
305 struct ohci_hcd *ohci;
306
307 if (pdev->num_resources != 2) {
308 printk(KERN_ERR "hcd probe: invalid num_resources: %i\n",
309 pdev->num_resources);
310 return -ENODEV;
311 }
312
313 if (pdev->resource[0].flags != IORESOURCE_MEM
314 || pdev->resource[1].flags != IORESOURCE_IRQ) {
315 printk(KERN_ERR "hcd probe: invalid resource type\n");
316 return -ENODEV;
317 }
318
319 usb_host_ck = clk_get(&pdev->dev, "usb_hhc_ck");
320 if (IS_ERR(usb_host_ck))
321 return PTR_ERR(usb_host_ck);
322
323 if (!cpu_is_omap15xx())
324 usb_dc_ck = clk_get(&pdev->dev, "usb_dc_ck");
325 else
326 usb_dc_ck = clk_get(&pdev->dev, "lb_ck");
327
328 if (IS_ERR(usb_dc_ck)) {
329 clk_put(usb_host_ck);
330 return PTR_ERR(usb_dc_ck);
331 }
332
333
334 hcd = usb_create_hcd (driver, &pdev->dev, dev_name(&pdev->dev));
335 if (!hcd) {
336 retval = -ENOMEM;
337 goto err0;
338 }
339 hcd->rsrc_start = pdev->resource[0].start;
340 hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
341
342 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
343 dev_dbg(&pdev->dev, "request_mem_region failed\n");
344 retval = -EBUSY;
345 goto err1;
346 }
347
348 hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
349 if (!hcd->regs) {
350 dev_err(&pdev->dev, "can't ioremap OHCI HCD\n");
351 retval = -ENOMEM;
352 goto err2;
353 }
354
355 ohci = hcd_to_ohci(hcd);
356 ohci_hcd_init(ohci);
357
358 host_initialized = 0;
359 host_enabled = 1;
360
361 irq = platform_get_irq(pdev, 0);
362 if (irq < 0) {
363 retval = -ENXIO;
364 goto err3;
365 }
366 retval = usb_add_hcd(hcd, irq, IRQF_DISABLED);
367 if (retval)
368 goto err3;
369
370 host_initialized = 1;
371
372 if (!host_enabled)
373 omap_ohci_clock_power(0);
374
375 return 0;
376err3:
377 iounmap(hcd->regs);
378err2:
379 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
380err1:
381 usb_put_hcd(hcd);
382err0:
383 clk_put(usb_dc_ck);
384 clk_put(usb_host_ck);
385 return retval;
386}
387
388
389/* may be called with controller, bus, and devices active */
390
391/**
392 * usb_hcd_omap_remove - shutdown processing for OMAP-based HCDs
393 * @dev: USB Host Controller being removed
394 * Context: !in_interrupt()
395 *
396 * Reverses the effect of usb_hcd_omap_probe(), first invoking
397 * the HCD's stop() method. It is always called from a thread
398 * context, normally "rmmod", "apmd", or something similar.
399 */
400static inline void
401usb_hcd_omap_remove (struct usb_hcd *hcd, struct platform_device *pdev)
402{
403 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
404
405 usb_remove_hcd(hcd);
406 if (ohci->transceiver) {
407 (void) otg_set_host(ohci->transceiver, 0);
408 put_device(ohci->transceiver->dev);
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 * generic hardware linkage
453 */
454 .irq = ohci_irq,
455 .flags = HCD_USB11 | HCD_MEMORY,
456
457 /*
458 * basic lifecycle operations
459 */
460 .reset = ohci_omap_init,
461 .start = ohci_omap_start,
462 .stop = ohci_omap_stop,
463 .shutdown = ohci_shutdown,
464
465 /*
466 * managing i/o requests and associated device resources
467 */
468 .urb_enqueue = ohci_urb_enqueue,
469 .urb_dequeue = ohci_urb_dequeue,
470 .endpoint_disable = ohci_endpoint_disable,
471
472 /*
473 * scheduling support
474 */
475 .get_frame_number = ohci_get_frame,
476
477 /*
478 * root hub support
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 platform_set_drvdata(dev, NULL);
502
503 return 0;
504}
505
506/*-------------------------------------------------------------------------*/
507
508#ifdef CONFIG_PM
509
510static int ohci_omap_suspend(struct platform_device *dev, pm_message_t message)
511{
512 struct ohci_hcd *ohci = hcd_to_ohci(platform_get_drvdata(dev));
513
514 if (time_before(jiffies, ohci->next_statechange))
515 msleep(5);
516 ohci->next_statechange = jiffies;
517
518 omap_ohci_clock_power(0);
519 ohci_to_hcd(ohci)->state = HC_STATE_SUSPENDED;
520 return 0;
521}
522
523static int ohci_omap_resume(struct platform_device *dev)
524{
525 struct usb_hcd *hcd = platform_get_drvdata(dev);
526 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
527
528 if (time_before(jiffies, ohci->next_statechange))
529 msleep(5);
530 ohci->next_statechange = jiffies;
531
532 omap_ohci_clock_power(1);
533 ohci_finish_controller_resume(hcd);
534 return 0;
535}
536
537#endif
538
539/*-------------------------------------------------------------------------*/
540
541/*
542 * Driver definition to register with the OMAP bus
543 */
544static struct platform_driver ohci_hcd_omap_driver = {
545 .probe = ohci_hcd_omap_drv_probe,
546 .remove = ohci_hcd_omap_drv_remove,
547 .shutdown = usb_hcd_platform_shutdown,
548#ifdef CONFIG_PM
549 .suspend = ohci_omap_suspend,
550 .resume = ohci_omap_resume,
551#endif
552 .driver = {
553 .owner = THIS_MODULE,
554 .name = "ohci",
555 },
556};
557
558MODULE_ALIAS("platform:ohci");
1// SPDX-License-Identifier: GPL-1.0+
2/*
3 * OHCI HCD (Host Controller Driver) for USB.
4 *
5 * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
6 * (C) Copyright 2000-2005 David Brownell
7 * (C) Copyright 2002 Hewlett-Packard Company
8 *
9 * OMAP Bus Glue
10 *
11 * Modified for OMAP by Tony Lindgren <tony@atomide.com>
12 * Based on the 2.4 OMAP OHCI driver originally done by MontaVista Software Inc.
13 * and on ohci-sa1111.c by Christopher Hoover <ch@hpl.hp.com>
14 *
15 * This file is licenced under the GPL.
16 */
17
18#include <linux/clk.h>
19#include <linux/dma-mapping.h>
20#include <linux/err.h>
21#include <linux/gpio.h>
22#include <linux/io.h>
23#include <linux/jiffies.h>
24#include <linux/kernel.h>
25#include <linux/module.h>
26#include <linux/usb/otg.h>
27#include <linux/platform_device.h>
28#include <linux/signal.h>
29#include <linux/usb.h>
30#include <linux/usb/hcd.h>
31
32#include "ohci.h"
33
34#include <asm/io.h>
35#include <asm/mach-types.h>
36
37#include <mach/mux.h>
38
39#include <mach/hardware.h>
40#include <mach/usb.h>
41
42
43/* OMAP-1510 OHCI has its own MMU for DMA */
44#define OMAP1510_LB_MEMSIZE 32 /* Should be same as SDRAM size */
45#define OMAP1510_LB_CLOCK_DIV 0xfffec10c
46#define OMAP1510_LB_MMU_CTL 0xfffec208
47#define OMAP1510_LB_MMU_LCK 0xfffec224
48#define OMAP1510_LB_MMU_LD_TLB 0xfffec228
49#define OMAP1510_LB_MMU_CAM_H 0xfffec22c
50#define OMAP1510_LB_MMU_CAM_L 0xfffec230
51#define OMAP1510_LB_MMU_RAM_H 0xfffec234
52#define OMAP1510_LB_MMU_RAM_L 0xfffec238
53
54#define DRIVER_DESC "OHCI OMAP driver"
55
56#ifdef CONFIG_TPS65010
57#include <linux/mfd/tps65010.h>
58#else
59
60#define LOW 0
61#define HIGH 1
62
63#define GPIO1 1
64
65static inline int tps65010_set_gpio_out_value(unsigned gpio, unsigned value)
66{
67 return 0;
68}
69
70#endif
71
72static struct clk *usb_host_ck;
73static struct clk *usb_dc_ck;
74
75static const char hcd_name[] = "ohci-omap";
76static struct hc_driver __read_mostly ohci_omap_hc_driver;
77
78static void omap_ohci_clock_power(int on)
79{
80 if (on) {
81 clk_enable(usb_dc_ck);
82 clk_enable(usb_host_ck);
83 /* guesstimate for T5 == 1x 32K clock + APLL lock time */
84 udelay(100);
85 } else {
86 clk_disable(usb_host_ck);
87 clk_disable(usb_dc_ck);
88 }
89}
90
91/*
92 * Board specific gang-switched transceiver power on/off.
93 * NOTE: OSK supplies power from DC, not battery.
94 */
95static int omap_ohci_transceiver_power(int on)
96{
97 if (on) {
98 if (machine_is_omap_innovator() && cpu_is_omap1510())
99 __raw_writeb(__raw_readb(INNOVATOR_FPGA_CAM_USB_CONTROL)
100 | ((1 << 5/*usb1*/) | (1 << 3/*usb2*/)),
101 INNOVATOR_FPGA_CAM_USB_CONTROL);
102 else if (machine_is_omap_osk())
103 tps65010_set_gpio_out_value(GPIO1, LOW);
104 } else {
105 if (machine_is_omap_innovator() && cpu_is_omap1510())
106 __raw_writeb(__raw_readb(INNOVATOR_FPGA_CAM_USB_CONTROL)
107 & ~((1 << 5/*usb1*/) | (1 << 3/*usb2*/)),
108 INNOVATOR_FPGA_CAM_USB_CONTROL);
109 else if (machine_is_omap_osk())
110 tps65010_set_gpio_out_value(GPIO1, HIGH);
111 }
112
113 return 0;
114}
115
116#ifdef CONFIG_ARCH_OMAP15XX
117/*
118 * OMAP-1510 specific Local Bus clock on/off
119 */
120static int omap_1510_local_bus_power(int on)
121{
122 if (on) {
123 omap_writel((1 << 1) | (1 << 0), OMAP1510_LB_MMU_CTL);
124 udelay(200);
125 } else {
126 omap_writel(0, OMAP1510_LB_MMU_CTL);
127 }
128
129 return 0;
130}
131
132/*
133 * OMAP-1510 specific Local Bus initialization
134 * NOTE: This assumes 32MB memory size in OMAP1510LB_MEMSIZE.
135 * See also arch/mach-omap/memory.h for __virt_to_dma() and
136 * __dma_to_virt() which need to match with the physical
137 * Local Bus address below.
138 */
139static int omap_1510_local_bus_init(void)
140{
141 unsigned int tlb;
142 unsigned long lbaddr, physaddr;
143
144 omap_writel((omap_readl(OMAP1510_LB_CLOCK_DIV) & 0xfffffff8) | 0x4,
145 OMAP1510_LB_CLOCK_DIV);
146
147 /* Configure the Local Bus MMU table */
148 for (tlb = 0; tlb < OMAP1510_LB_MEMSIZE; tlb++) {
149 lbaddr = tlb * 0x00100000 + OMAP1510_LB_OFFSET;
150 physaddr = tlb * 0x00100000 + PHYS_OFFSET;
151 omap_writel((lbaddr & 0x0fffffff) >> 22, OMAP1510_LB_MMU_CAM_H);
152 omap_writel(((lbaddr & 0x003ffc00) >> 6) | 0xc,
153 OMAP1510_LB_MMU_CAM_L);
154 omap_writel(physaddr >> 16, OMAP1510_LB_MMU_RAM_H);
155 omap_writel((physaddr & 0x0000fc00) | 0x300, OMAP1510_LB_MMU_RAM_L);
156 omap_writel(tlb << 4, OMAP1510_LB_MMU_LCK);
157 omap_writel(0x1, OMAP1510_LB_MMU_LD_TLB);
158 }
159
160 /* Enable the walking table */
161 omap_writel(omap_readl(OMAP1510_LB_MMU_CTL) | (1 << 3), OMAP1510_LB_MMU_CTL);
162 udelay(200);
163
164 return 0;
165}
166#else
167#define omap_1510_local_bus_power(x) {}
168#define omap_1510_local_bus_init() {}
169#endif
170
171#ifdef CONFIG_USB_OTG
172
173static void start_hnp(struct ohci_hcd *ohci)
174{
175 struct usb_hcd *hcd = ohci_to_hcd(ohci);
176 const unsigned port = hcd->self.otg_port - 1;
177 unsigned long flags;
178 u32 l;
179
180 otg_start_hnp(hcd->usb_phy->otg);
181
182 local_irq_save(flags);
183 hcd->usb_phy->otg->state = OTG_STATE_A_SUSPEND;
184 writel (RH_PS_PSS, &ohci->regs->roothub.portstatus [port]);
185 l = omap_readl(OTG_CTRL);
186 l &= ~OTG_A_BUSREQ;
187 omap_writel(l, OTG_CTRL);
188 local_irq_restore(flags);
189}
190
191#endif
192
193/*-------------------------------------------------------------------------*/
194
195static int ohci_omap_reset(struct usb_hcd *hcd)
196{
197 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
198 struct omap_usb_config *config = dev_get_platdata(hcd->self.controller);
199 int need_transceiver = (config->otg != 0);
200 int ret;
201
202 dev_dbg(hcd->self.controller, "starting USB Controller\n");
203
204 if (config->otg) {
205 hcd->self.otg_port = config->otg;
206 /* default/minimum OTG power budget: 8 mA */
207 hcd->power_budget = 8;
208 }
209
210 /* boards can use OTG transceivers in non-OTG modes */
211 need_transceiver = need_transceiver
212 || machine_is_omap_h2() || machine_is_omap_h3();
213
214 /* XXX OMAP16xx only */
215 if (config->ocpi_enable)
216 config->ocpi_enable();
217
218#ifdef CONFIG_USB_OTG
219 if (need_transceiver) {
220 hcd->usb_phy = usb_get_phy(USB_PHY_TYPE_USB2);
221 if (!IS_ERR_OR_NULL(hcd->usb_phy)) {
222 int status = otg_set_host(hcd->usb_phy->otg,
223 &ohci_to_hcd(ohci)->self);
224 dev_dbg(hcd->self.controller, "init %s phy, status %d\n",
225 hcd->usb_phy->label, status);
226 if (status) {
227 usb_put_phy(hcd->usb_phy);
228 return status;
229 }
230 } else {
231 return -EPROBE_DEFER;
232 }
233 hcd->skip_phy_initialization = 1;
234 ohci->start_hnp = start_hnp;
235 }
236#endif
237
238 omap_ohci_clock_power(1);
239
240 if (cpu_is_omap15xx()) {
241 omap_1510_local_bus_power(1);
242 omap_1510_local_bus_init();
243 }
244
245 ret = ohci_setup(hcd);
246 if (ret < 0)
247 return ret;
248
249 if (config->otg || config->rwc) {
250 ohci->hc_control = OHCI_CTRL_RWC;
251 writel(OHCI_CTRL_RWC, &ohci->regs->control);
252 }
253
254 /* board-specific power switching and overcurrent support */
255 if (machine_is_omap_osk() || machine_is_omap_innovator()) {
256 u32 rh = roothub_a (ohci);
257
258 /* power switching (ganged by default) */
259 rh &= ~RH_A_NPS;
260
261 /* TPS2045 switch for internal transceiver (port 1) */
262 if (machine_is_omap_osk()) {
263 ohci_to_hcd(ohci)->power_budget = 250;
264
265 rh &= ~RH_A_NOCP;
266
267 /* gpio9 for overcurrent detction */
268 omap_cfg_reg(W8_1610_GPIO9);
269 gpio_request(9, "OHCI overcurrent");
270 gpio_direction_input(9);
271
272 /* for paranoia's sake: disable USB.PUEN */
273 omap_cfg_reg(W4_USB_HIGHZ);
274 }
275 ohci_writel(ohci, rh, &ohci->regs->roothub.a);
276 ohci->flags &= ~OHCI_QUIRK_HUB_POWER;
277 } else if (machine_is_nokia770()) {
278 /* We require a self-powered hub, which should have
279 * plenty of power. */
280 ohci_to_hcd(ohci)->power_budget = 0;
281 }
282
283 /* FIXME hub_wq hub requests should manage power switching */
284 omap_ohci_transceiver_power(1);
285
286 /* board init will have already handled HMC and mux setup.
287 * any external transceiver should already be initialized
288 * too, so all configured ports use the right signaling now.
289 */
290
291 return 0;
292}
293
294/*-------------------------------------------------------------------------*/
295
296/**
297 * ohci_hcd_omap_probe - initialize OMAP-based HCDs
298 * Context: !in_interrupt()
299 *
300 * Allocates basic resources for this USB host controller, and
301 * then invokes the start() method for the HCD associated with it
302 * through the hotplug entry's driver_data.
303 */
304static int ohci_hcd_omap_probe(struct platform_device *pdev)
305{
306 int retval, irq;
307 struct usb_hcd *hcd = 0;
308
309 if (pdev->num_resources != 2) {
310 dev_err(&pdev->dev, "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 dev_err(&pdev->dev, "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(&ohci_omap_hc_driver, &pdev->dev,
337 dev_name(&pdev->dev));
338 if (!hcd) {
339 retval = -ENOMEM;
340 goto err0;
341 }
342 hcd->rsrc_start = pdev->resource[0].start;
343 hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
344
345 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
346 dev_dbg(&pdev->dev, "request_mem_region failed\n");
347 retval = -EBUSY;
348 goto err1;
349 }
350
351 hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
352 if (!hcd->regs) {
353 dev_err(&pdev->dev, "can't ioremap OHCI HCD\n");
354 retval = -ENOMEM;
355 goto err2;
356 }
357
358 irq = platform_get_irq(pdev, 0);
359 if (irq < 0) {
360 retval = -ENXIO;
361 goto err3;
362 }
363 retval = usb_add_hcd(hcd, irq, 0);
364 if (retval)
365 goto err3;
366
367 device_wakeup_enable(hcd->self.controller);
368 return 0;
369err3:
370 iounmap(hcd->regs);
371err2:
372 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
373err1:
374 usb_put_hcd(hcd);
375err0:
376 clk_put(usb_dc_ck);
377 clk_put(usb_host_ck);
378 return retval;
379}
380
381
382/* may be called with controller, bus, and devices active */
383
384/**
385 * ohci_hcd_omap_remove - shutdown processing for OMAP-based HCDs
386 * @dev: USB Host Controller being removed
387 * Context: !in_interrupt()
388 *
389 * Reverses the effect of ohci_hcd_omap_probe(), first invoking
390 * the HCD's stop() method. It is always called from a thread
391 * context, normally "rmmod", "apmd", or something similar.
392 */
393static int ohci_hcd_omap_remove(struct platform_device *pdev)
394{
395 struct usb_hcd *hcd = platform_get_drvdata(pdev);
396
397 dev_dbg(hcd->self.controller, "stopping USB Controller\n");
398 usb_remove_hcd(hcd);
399 omap_ohci_clock_power(0);
400 if (!IS_ERR_OR_NULL(hcd->usb_phy)) {
401 (void) otg_set_host(hcd->usb_phy->otg, 0);
402 usb_put_phy(hcd->usb_phy);
403 }
404 if (machine_is_omap_osk())
405 gpio_free(9);
406 iounmap(hcd->regs);
407 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
408 usb_put_hcd(hcd);
409 clk_put(usb_dc_ck);
410 clk_put(usb_host_ck);
411 return 0;
412}
413
414/*-------------------------------------------------------------------------*/
415
416#ifdef CONFIG_PM
417
418static int ohci_omap_suspend(struct platform_device *pdev, pm_message_t message)
419{
420 struct usb_hcd *hcd = platform_get_drvdata(pdev);
421 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
422 bool do_wakeup = device_may_wakeup(&pdev->dev);
423 int ret;
424
425 if (time_before(jiffies, ohci->next_statechange))
426 msleep(5);
427 ohci->next_statechange = jiffies;
428
429 ret = ohci_suspend(hcd, do_wakeup);
430 if (ret)
431 return ret;
432
433 omap_ohci_clock_power(0);
434 return ret;
435}
436
437static int ohci_omap_resume(struct platform_device *dev)
438{
439 struct usb_hcd *hcd = platform_get_drvdata(dev);
440 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
441
442 if (time_before(jiffies, ohci->next_statechange))
443 msleep(5);
444 ohci->next_statechange = jiffies;
445
446 omap_ohci_clock_power(1);
447 ohci_resume(hcd, false);
448 return 0;
449}
450
451#endif
452
453/*-------------------------------------------------------------------------*/
454
455/*
456 * Driver definition to register with the OMAP bus
457 */
458static struct platform_driver ohci_hcd_omap_driver = {
459 .probe = ohci_hcd_omap_probe,
460 .remove = ohci_hcd_omap_remove,
461 .shutdown = usb_hcd_platform_shutdown,
462#ifdef CONFIG_PM
463 .suspend = ohci_omap_suspend,
464 .resume = ohci_omap_resume,
465#endif
466 .driver = {
467 .name = "ohci",
468 },
469};
470
471static const struct ohci_driver_overrides omap_overrides __initconst = {
472 .product_desc = "OMAP OHCI",
473 .reset = ohci_omap_reset
474};
475
476static int __init ohci_omap_init(void)
477{
478 if (usb_disabled())
479 return -ENODEV;
480
481 pr_info("%s: " DRIVER_DESC "\n", hcd_name);
482
483 ohci_init_driver(&ohci_omap_hc_driver, &omap_overrides);
484 return platform_driver_register(&ohci_hcd_omap_driver);
485}
486module_init(ohci_omap_init);
487
488static void __exit ohci_omap_cleanup(void)
489{
490 platform_driver_unregister(&ohci_hcd_omap_driver);
491}
492module_exit(ohci_omap_cleanup);
493
494MODULE_DESCRIPTION(DRIVER_DESC);
495MODULE_ALIAS("platform:ohci");
496MODULE_LICENSE("GPL");