Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * OHCI HCD (Host Controller Driver) for USB. | |
3 | * | |
4 | * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at> | |
5 | * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net> | |
6 | * (C) Copyright 2002 Hewlett-Packard Company | |
7 | * | |
8 | * Bus Glue for pxa27x | |
9 | * | |
10 | * Written by Christopher Hoover <ch@hpl.hp.com> | |
11 | * Based on fragments of previous driver by Russell King et al. | |
12 | * | |
13 | * Modified for LH7A404 from ohci-sa1111.c | |
14 | * by Durgesh Pattamatta <pattamattad@sharpsec.com> | |
15 | * | |
16 | * Modified for pxa27x from ohci-lh7a404.c | |
17 | * by Nick Bane <nick@cecomputing.co.uk> 26-8-2004 | |
18 | * | |
19 | * This file is licenced under the GPL. | |
20 | */ | |
21 | ||
22 | #include <linux/device.h> | |
4e57b681 | 23 | #include <linux/signal.h> |
d052d1be | 24 | #include <linux/platform_device.h> |
4fd5f826 | 25 | |
1da177e4 LT |
26 | #include <asm/mach-types.h> |
27 | #include <asm/hardware.h> | |
28 | #include <asm/arch/pxa-regs.h> | |
81f280e2 | 29 | #include <asm/arch/ohci.h> |
1da177e4 LT |
30 | |
31 | #define PXA_UHC_MAX_PORTNUM 3 | |
32 | ||
33 | #define UHCRHPS(x) __REG2( 0x4C000050, (x)<<2 ) | |
34 | ||
1da177e4 LT |
35 | /* |
36 | PMM_NPS_MODE -- PMM Non-power switching mode | |
37 | Ports are powered continuously. | |
38 | ||
39 | PMM_GLOBAL_MODE -- PMM global switching mode | |
40 | All ports are powered at the same time. | |
41 | ||
42 | PMM_PERPORT_MODE -- PMM per port switching mode | |
43 | Ports are powered individually. | |
44 | */ | |
45 | static int pxa27x_ohci_select_pmm( int mode ) | |
46 | { | |
1da177e4 LT |
47 | switch ( mode ) { |
48 | case PMM_NPS_MODE: | |
49 | UHCRHDA |= RH_A_NPS; | |
50 | break; | |
51 | case PMM_GLOBAL_MODE: | |
52 | UHCRHDA &= ~(RH_A_NPS & RH_A_PSM); | |
53 | break; | |
54 | case PMM_PERPORT_MODE: | |
55 | UHCRHDA &= ~(RH_A_NPS); | |
56 | UHCRHDA |= RH_A_PSM; | |
57 | ||
58 | /* Set port power control mask bits, only 3 ports. */ | |
59 | UHCRHDB |= (0x7<<17); | |
60 | break; | |
61 | default: | |
62 | printk( KERN_ERR | |
63 | "Invalid mode %d, set to non-power switch mode.\n", | |
64 | mode ); | |
65 | ||
1da177e4 LT |
66 | UHCRHDA |= RH_A_NPS; |
67 | } | |
68 | ||
69 | return 0; | |
70 | } | |
71 | ||
1da177e4 LT |
72 | extern int usb_disabled(void); |
73 | ||
74 | /*-------------------------------------------------------------------------*/ | |
75 | ||
81f280e2 | 76 | static int pxa27x_start_hc(struct device *dev) |
1da177e4 | 77 | { |
81f280e2 RP |
78 | int retval = 0; |
79 | struct pxaohci_platform_data *inf; | |
80 | ||
81 | inf = dev->platform_data; | |
82 | ||
1da177e4 LT |
83 | pxa_set_cken(CKEN10_USBHOST, 1); |
84 | ||
85 | UHCHR |= UHCHR_FHR; | |
86 | udelay(11); | |
87 | UHCHR &= ~UHCHR_FHR; | |
88 | ||
89 | UHCHR |= UHCHR_FSBIR; | |
90 | while (UHCHR & UHCHR_FSBIR) | |
91 | cpu_relax(); | |
92 | ||
81f280e2 RP |
93 | if (inf->init) |
94 | retval = inf->init(dev); | |
155faf5e | 95 | |
81f280e2 RP |
96 | if (retval < 0) |
97 | return retval; | |
1da177e4 LT |
98 | |
99 | UHCHR &= ~UHCHR_SSE; | |
100 | ||
101 | UHCHIE = (UHCHIE_UPRIE | UHCHIE_RWIE); | |
155faf5e DB |
102 | |
103 | /* Clear any OTG Pin Hold */ | |
104 | if (PSSR & PSSR_OTGPH) | |
105 | PSSR |= PSSR_OTGPH; | |
81f280e2 RP |
106 | |
107 | return 0; | |
1da177e4 LT |
108 | } |
109 | ||
81f280e2 | 110 | static void pxa27x_stop_hc(struct device *dev) |
1da177e4 | 111 | { |
81f280e2 RP |
112 | struct pxaohci_platform_data *inf; |
113 | ||
114 | inf = dev->platform_data; | |
115 | ||
116 | if (inf->exit) | |
117 | inf->exit(dev); | |
118 | ||
1da177e4 LT |
119 | UHCHR |= UHCHR_FHR; |
120 | udelay(11); | |
121 | UHCHR &= ~UHCHR_FHR; | |
122 | ||
123 | UHCCOMS |= 1; | |
124 | udelay(10); | |
125 | ||
126 | pxa_set_cken(CKEN10_USBHOST, 0); | |
127 | } | |
128 | ||
129 | ||
130 | /*-------------------------------------------------------------------------*/ | |
131 | ||
132 | /* configure so an HC device and id are always provided */ | |
133 | /* always called with process context; sleeping is OK */ | |
134 | ||
135 | ||
136 | /** | |
137 | * usb_hcd_pxa27x_probe - initialize pxa27x-based HCDs | |
138 | * Context: !in_interrupt() | |
139 | * | |
140 | * Allocates basic resources for this USB host controller, and | |
141 | * then invokes the start() method for the HCD associated with it | |
142 | * through the hotplug entry's driver_data. | |
143 | * | |
144 | */ | |
81f280e2 | 145 | int usb_hcd_pxa27x_probe (const struct hc_driver *driver, struct platform_device *pdev) |
1da177e4 LT |
146 | { |
147 | int retval; | |
148 | struct usb_hcd *hcd; | |
81f280e2 RP |
149 | struct pxaohci_platform_data *inf; |
150 | ||
151 | inf = pdev->dev.platform_data; | |
1da177e4 | 152 | |
81f280e2 RP |
153 | if (!inf) |
154 | return -ENODEV; | |
155 | ||
156 | if (pdev->resource[1].flags != IORESOURCE_IRQ) { | |
1da177e4 LT |
157 | pr_debug ("resource[1] is not IORESOURCE_IRQ"); |
158 | return -ENOMEM; | |
159 | } | |
160 | ||
81f280e2 | 161 | hcd = usb_create_hcd (driver, &pdev->dev, "pxa27x"); |
1da177e4 LT |
162 | if (!hcd) |
163 | return -ENOMEM; | |
81f280e2 RP |
164 | hcd->rsrc_start = pdev->resource[0].start; |
165 | hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1; | |
1da177e4 LT |
166 | |
167 | if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { | |
168 | pr_debug("request_mem_region failed"); | |
169 | retval = -EBUSY; | |
170 | goto err1; | |
171 | } | |
172 | ||
173 | hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); | |
174 | if (!hcd->regs) { | |
175 | pr_debug("ioremap failed"); | |
176 | retval = -ENOMEM; | |
177 | goto err2; | |
178 | } | |
179 | ||
81f280e2 RP |
180 | if ((retval = pxa27x_start_hc(&pdev->dev)) < 0) { |
181 | pr_debug("pxa27x_start_hc failed"); | |
182 | goto err3; | |
183 | } | |
1da177e4 LT |
184 | |
185 | /* Select Power Management Mode */ | |
81f280e2 | 186 | pxa27x_ohci_select_pmm(inf->port_mode); |
1da177e4 LT |
187 | |
188 | ohci_hcd_init(hcd_to_ohci(hcd)); | |
189 | ||
81f280e2 | 190 | retval = usb_add_hcd(hcd, pdev->resource[1].start, SA_INTERRUPT); |
1da177e4 LT |
191 | if (retval == 0) |
192 | return retval; | |
193 | ||
81f280e2 RP |
194 | pxa27x_stop_hc(&pdev->dev); |
195 | err3: | |
1da177e4 LT |
196 | iounmap(hcd->regs); |
197 | err2: | |
198 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); | |
199 | err1: | |
200 | usb_put_hcd(hcd); | |
201 | return retval; | |
202 | } | |
203 | ||
204 | ||
205 | /* may be called without controller electrically present */ | |
206 | /* may be called with controller, bus, and devices active */ | |
207 | ||
208 | /** | |
209 | * usb_hcd_pxa27x_remove - shutdown processing for pxa27x-based HCDs | |
210 | * @dev: USB Host Controller being removed | |
211 | * Context: !in_interrupt() | |
212 | * | |
213 | * Reverses the effect of usb_hcd_pxa27x_probe(), first invoking | |
214 | * the HCD's stop() method. It is always called from a thread | |
215 | * context, normally "rmmod", "apmd", or something similar. | |
216 | * | |
217 | */ | |
81f280e2 | 218 | void usb_hcd_pxa27x_remove (struct usb_hcd *hcd, struct platform_device *pdev) |
1da177e4 LT |
219 | { |
220 | usb_remove_hcd(hcd); | |
81f280e2 | 221 | pxa27x_stop_hc(&pdev->dev); |
1da177e4 LT |
222 | iounmap(hcd->regs); |
223 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); | |
224 | usb_put_hcd(hcd); | |
225 | } | |
226 | ||
227 | /*-------------------------------------------------------------------------*/ | |
228 | ||
229 | static int __devinit | |
230 | ohci_pxa27x_start (struct usb_hcd *hcd) | |
231 | { | |
232 | struct ohci_hcd *ohci = hcd_to_ohci (hcd); | |
233 | int ret; | |
234 | ||
235 | ohci_dbg (ohci, "ohci_pxa27x_start, ohci:%p", ohci); | |
236 | ||
fdd13b36 DB |
237 | /* The value of NDP in roothub_a is incorrect on this hardware */ |
238 | ohci->num_ports = 3; | |
239 | ||
1da177e4 LT |
240 | if ((ret = ohci_init(ohci)) < 0) |
241 | return ret; | |
242 | ||
243 | if ((ret = ohci_run (ohci)) < 0) { | |
244 | err ("can't start %s", hcd->self.bus_name); | |
245 | ohci_stop (hcd); | |
246 | return ret; | |
247 | } | |
248 | ||
249 | return 0; | |
250 | } | |
251 | ||
252 | /*-------------------------------------------------------------------------*/ | |
253 | ||
254 | static const struct hc_driver ohci_pxa27x_hc_driver = { | |
255 | .description = hcd_name, | |
256 | .product_desc = "PXA27x OHCI", | |
257 | .hcd_priv_size = sizeof(struct ohci_hcd), | |
258 | ||
259 | /* | |
260 | * generic hardware linkage | |
261 | */ | |
262 | .irq = ohci_irq, | |
263 | .flags = HCD_USB11 | HCD_MEMORY, | |
264 | ||
265 | /* | |
266 | * basic lifecycle operations | |
267 | */ | |
268 | .start = ohci_pxa27x_start, | |
269 | .stop = ohci_stop, | |
270 | ||
271 | /* | |
272 | * managing i/o requests and associated device resources | |
273 | */ | |
274 | .urb_enqueue = ohci_urb_enqueue, | |
275 | .urb_dequeue = ohci_urb_dequeue, | |
276 | .endpoint_disable = ohci_endpoint_disable, | |
277 | ||
278 | /* | |
279 | * scheduling support | |
280 | */ | |
281 | .get_frame_number = ohci_get_frame, | |
282 | ||
283 | /* | |
284 | * root hub support | |
285 | */ | |
286 | .hub_status_data = ohci_hub_status_data, | |
287 | .hub_control = ohci_hub_control, | |
8ad7fe16 | 288 | #ifdef CONFIG_PM |
0c0382e3 AS |
289 | .bus_suspend = ohci_bus_suspend, |
290 | .bus_resume = ohci_bus_resume, | |
1da177e4 | 291 | #endif |
9293677a | 292 | .start_port_reset = ohci_start_port_reset, |
1da177e4 LT |
293 | }; |
294 | ||
295 | /*-------------------------------------------------------------------------*/ | |
296 | ||
3ae5eaec | 297 | static int ohci_hcd_pxa27x_drv_probe(struct platform_device *pdev) |
1da177e4 | 298 | { |
1da177e4 LT |
299 | pr_debug ("In ohci_hcd_pxa27x_drv_probe"); |
300 | ||
301 | if (usb_disabled()) | |
302 | return -ENODEV; | |
303 | ||
81f280e2 | 304 | return usb_hcd_pxa27x_probe(&ohci_pxa27x_hc_driver, pdev); |
1da177e4 LT |
305 | } |
306 | ||
3ae5eaec | 307 | static int ohci_hcd_pxa27x_drv_remove(struct platform_device *pdev) |
1da177e4 | 308 | { |
3ae5eaec | 309 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
1da177e4 LT |
310 | |
311 | usb_hcd_pxa27x_remove(hcd, pdev); | |
a5e36d20 | 312 | platform_set_drvdata(pdev, NULL); |
1da177e4 LT |
313 | return 0; |
314 | } | |
315 | ||
2e1dcc16 RP |
316 | #ifdef CONFIG_PM |
317 | static int ohci_hcd_pxa27x_drv_suspend(struct platform_device *pdev, pm_message_t state) | |
1da177e4 | 318 | { |
a5e36d20 RP |
319 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
320 | struct ohci_hcd *ohci = hcd_to_ohci(hcd); | |
2e1dcc16 RP |
321 | |
322 | if (time_before(jiffies, ohci->next_statechange)) | |
323 | msleep(5); | |
324 | ohci->next_statechange = jiffies; | |
325 | ||
326 | pxa27x_stop_hc(&pdev->dev); | |
a5e36d20 | 327 | hcd->state = HC_STATE_SUSPENDED; |
2e1dcc16 | 328 | pdev->dev.power.power_state = PMSG_SUSPEND; |
1da177e4 LT |
329 | |
330 | return 0; | |
331 | } | |
332 | ||
2e1dcc16 | 333 | static int ohci_hcd_pxa27x_drv_resume(struct platform_device *pdev) |
1da177e4 | 334 | { |
a5e36d20 RP |
335 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
336 | struct ohci_hcd *ohci = hcd_to_ohci(hcd); | |
2e1dcc16 RP |
337 | int status; |
338 | ||
339 | if (time_before(jiffies, ohci->next_statechange)) | |
340 | msleep(5); | |
341 | ohci->next_statechange = jiffies; | |
342 | ||
343 | if ((status = pxa27x_start_hc(&pdev->dev)) < 0) | |
344 | return status; | |
345 | ||
346 | pdev->dev.power.power_state = PMSG_ON; | |
a5e36d20 | 347 | usb_hcd_resume_root_hub(hcd); |
1da177e4 LT |
348 | |
349 | return 0; | |
350 | } | |
2e1dcc16 | 351 | #endif |
1da177e4 LT |
352 | |
353 | ||
3ae5eaec | 354 | static struct platform_driver ohci_hcd_pxa27x_driver = { |
1da177e4 LT |
355 | .probe = ohci_hcd_pxa27x_drv_probe, |
356 | .remove = ohci_hcd_pxa27x_drv_remove, | |
2e1dcc16 | 357 | #ifdef CONFIG_PM |
1da177e4 | 358 | .suspend = ohci_hcd_pxa27x_drv_suspend, |
3ae5eaec | 359 | .resume = ohci_hcd_pxa27x_drv_resume, |
2e1dcc16 | 360 | #endif |
3ae5eaec RK |
361 | .driver = { |
362 | .name = "pxa27x-ohci", | |
363 | }, | |
1da177e4 LT |
364 | }; |
365 | ||
366 | static int __init ohci_hcd_pxa27x_init (void) | |
367 | { | |
368 | pr_debug (DRIVER_INFO " (pxa27x)"); | |
369 | pr_debug ("block sizes: ed %d td %d\n", | |
370 | sizeof (struct ed), sizeof (struct td)); | |
371 | ||
3ae5eaec | 372 | return platform_driver_register(&ohci_hcd_pxa27x_driver); |
1da177e4 LT |
373 | } |
374 | ||
375 | static void __exit ohci_hcd_pxa27x_cleanup (void) | |
376 | { | |
3ae5eaec | 377 | platform_driver_unregister(&ohci_hcd_pxa27x_driver); |
1da177e4 LT |
378 | } |
379 | ||
380 | module_init (ohci_hcd_pxa27x_init); | |
381 | module_exit (ohci_hcd_pxa27x_cleanup); |