Commit | Line | Data |
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80cb9aee | 1 | /* |
1af10774 AV |
2 | * Copyright 2005-2009 MontaVista Software, Inc. |
3 | * Copyright 2008 Freescale Semiconductor, Inc. | |
80cb9aee RV |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of the GNU General Public License as published by the | |
7 | * Free Software Foundation; either version 2 of the License, or (at your | |
8 | * option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
12 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
13 | * for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software Foundation, | |
17 | * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
18 | * | |
19 | * Ported to 834x by Randy Vinson <rvinson@mvista.com> using code provided | |
20 | * by Hunter Wu. | |
1af10774 AV |
21 | * Power Management support by Dave Liu <daveliu@freescale.com>, |
22 | * Jerry Huang <Chang-Ming.Huang@freescale.com> and | |
23 | * Anton Vorontsov <avorontsov@ru.mvista.com>. | |
80cb9aee RV |
24 | */ |
25 | ||
1af10774 AV |
26 | #include <linux/kernel.h> |
27 | #include <linux/types.h> | |
28 | #include <linux/delay.h> | |
29 | #include <linux/pm.h> | |
80cb9aee RV |
30 | #include <linux/platform_device.h> |
31 | #include <linux/fsl_devices.h> | |
32 | ||
33 | #include "ehci-fsl.h" | |
34 | ||
80cb9aee RV |
35 | /* configure so an HC device and id are always provided */ |
36 | /* always called with process context; sleeping is OK */ | |
37 | ||
38 | /** | |
39 | * usb_hcd_fsl_probe - initialize FSL-based HCDs | |
40 | * @drvier: Driver to be used for this HCD | |
41 | * @pdev: USB Host Controller being probed | |
42 | * Context: !in_interrupt() | |
43 | * | |
44 | * Allocates basic resources for this USB host controller. | |
45 | * | |
46 | */ | |
dad3843f AV |
47 | static int usb_hcd_fsl_probe(const struct hc_driver *driver, |
48 | struct platform_device *pdev) | |
80cb9aee RV |
49 | { |
50 | struct fsl_usb2_platform_data *pdata; | |
51 | struct usb_hcd *hcd; | |
52 | struct resource *res; | |
53 | int irq; | |
54 | int retval; | |
55 | unsigned int temp; | |
56 | ||
57 | pr_debug("initializing FSL-SOC USB Controller\n"); | |
58 | ||
59 | /* Need platform data for setup */ | |
60 | pdata = (struct fsl_usb2_platform_data *)pdev->dev.platform_data; | |
61 | if (!pdata) { | |
62 | dev_err(&pdev->dev, | |
7071a3ce | 63 | "No platform data for %s.\n", dev_name(&pdev->dev)); |
80cb9aee RV |
64 | return -ENODEV; |
65 | } | |
66 | ||
67 | /* | |
68 | * This is a host mode driver, verify that we're supposed to be | |
69 | * in host mode. | |
70 | */ | |
71 | if (!((pdata->operating_mode == FSL_USB2_DR_HOST) || | |
ba02978a LY |
72 | (pdata->operating_mode == FSL_USB2_MPH_HOST) || |
73 | (pdata->operating_mode == FSL_USB2_DR_OTG))) { | |
80cb9aee RV |
74 | dev_err(&pdev->dev, |
75 | "Non Host Mode configured for %s. Wrong driver linked.\n", | |
7071a3ce | 76 | dev_name(&pdev->dev)); |
80cb9aee RV |
77 | return -ENODEV; |
78 | } | |
79 | ||
80 | res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); | |
81 | if (!res) { | |
82 | dev_err(&pdev->dev, | |
83 | "Found HC with no IRQ. Check %s setup!\n", | |
7071a3ce | 84 | dev_name(&pdev->dev)); |
80cb9aee RV |
85 | return -ENODEV; |
86 | } | |
87 | irq = res->start; | |
88 | ||
7071a3ce | 89 | hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev)); |
80cb9aee RV |
90 | if (!hcd) { |
91 | retval = -ENOMEM; | |
92 | goto err1; | |
93 | } | |
94 | ||
95 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
96 | if (!res) { | |
97 | dev_err(&pdev->dev, | |
98 | "Found HC with no register addr. Check %s setup!\n", | |
7071a3ce | 99 | dev_name(&pdev->dev)); |
80cb9aee RV |
100 | retval = -ENODEV; |
101 | goto err2; | |
102 | } | |
103 | hcd->rsrc_start = res->start; | |
104 | hcd->rsrc_len = res->end - res->start + 1; | |
105 | if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, | |
106 | driver->description)) { | |
107 | dev_dbg(&pdev->dev, "controller already in use\n"); | |
108 | retval = -EBUSY; | |
109 | goto err2; | |
110 | } | |
111 | hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); | |
112 | ||
113 | if (hcd->regs == NULL) { | |
114 | dev_dbg(&pdev->dev, "error mapping memory\n"); | |
115 | retval = -EFAULT; | |
116 | goto err3; | |
117 | } | |
118 | ||
119 | /* Enable USB controller */ | |
120 | temp = in_be32(hcd->regs + 0x500); | |
121 | out_be32(hcd->regs + 0x500, temp | 0x4); | |
122 | ||
123 | /* Set to Host mode */ | |
124 | temp = in_le32(hcd->regs + 0x1a8); | |
125 | out_le32(hcd->regs + 0x1a8, temp | 0x3); | |
126 | ||
442258e2 | 127 | retval = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED); |
80cb9aee RV |
128 | if (retval != 0) |
129 | goto err4; | |
130 | return retval; | |
131 | ||
132 | err4: | |
133 | iounmap(hcd->regs); | |
134 | err3: | |
135 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); | |
136 | err2: | |
137 | usb_put_hcd(hcd); | |
138 | err1: | |
7071a3ce | 139 | dev_err(&pdev->dev, "init %s fail, %d\n", dev_name(&pdev->dev), retval); |
80cb9aee RV |
140 | return retval; |
141 | } | |
142 | ||
143 | /* may be called without controller electrically present */ | |
144 | /* may be called with controller, bus, and devices active */ | |
145 | ||
146 | /** | |
147 | * usb_hcd_fsl_remove - shutdown processing for FSL-based HCDs | |
148 | * @dev: USB Host Controller being removed | |
149 | * Context: !in_interrupt() | |
150 | * | |
151 | * Reverses the effect of usb_hcd_fsl_probe(). | |
152 | * | |
153 | */ | |
dad3843f AV |
154 | static void usb_hcd_fsl_remove(struct usb_hcd *hcd, |
155 | struct platform_device *pdev) | |
80cb9aee RV |
156 | { |
157 | usb_remove_hcd(hcd); | |
158 | iounmap(hcd->regs); | |
159 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); | |
160 | usb_put_hcd(hcd); | |
161 | } | |
162 | ||
163 | static void mpc83xx_setup_phy(struct ehci_hcd *ehci, | |
164 | enum fsl_usb2_phy_modes phy_mode, | |
165 | unsigned int port_offset) | |
166 | { | |
499003e8 | 167 | u32 portsc = 0; |
80cb9aee RV |
168 | switch (phy_mode) { |
169 | case FSL_USB2_PHY_ULPI: | |
170 | portsc |= PORT_PTS_ULPI; | |
171 | break; | |
172 | case FSL_USB2_PHY_SERIAL: | |
173 | portsc |= PORT_PTS_SERIAL; | |
174 | break; | |
175 | case FSL_USB2_PHY_UTMI_WIDE: | |
176 | portsc |= PORT_PTS_PTW; | |
177 | /* fall through */ | |
178 | case FSL_USB2_PHY_UTMI: | |
179 | portsc |= PORT_PTS_UTMI; | |
180 | break; | |
181 | case FSL_USB2_PHY_NONE: | |
182 | break; | |
183 | } | |
083522d7 | 184 | ehci_writel(ehci, portsc, &ehci->regs->port_status[port_offset]); |
80cb9aee RV |
185 | } |
186 | ||
187 | static void mpc83xx_usb_setup(struct usb_hcd *hcd) | |
188 | { | |
189 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); | |
190 | struct fsl_usb2_platform_data *pdata; | |
191 | void __iomem *non_ehci = hcd->regs; | |
ba02978a | 192 | u32 temp; |
80cb9aee RV |
193 | |
194 | pdata = | |
195 | (struct fsl_usb2_platform_data *)hcd->self.controller-> | |
196 | platform_data; | |
197 | /* Enable PHY interface in the control reg. */ | |
ba02978a LY |
198 | temp = in_be32(non_ehci + FSL_SOC_USB_CTRL); |
199 | out_be32(non_ehci + FSL_SOC_USB_CTRL, temp | 0x00000004); | |
80cb9aee RV |
200 | out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0000001b); |
201 | ||
40acc095 LY |
202 | #if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE) |
203 | /* | |
204 | * Turn on cache snooping hardware, since some PowerPC platforms | |
205 | * wholly rely on hardware to deal with cache coherent | |
206 | */ | |
207 | ||
208 | /* Setup Snooping for all the 4GB space */ | |
209 | /* SNOOP1 starts from 0x0, size 2G */ | |
210 | out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0 | SNOOP_SIZE_2GB); | |
211 | /* SNOOP2 starts from 0x80000000, size 2G */ | |
212 | out_be32(non_ehci + FSL_SOC_USB_SNOOP2, 0x80000000 | SNOOP_SIZE_2GB); | |
213 | #endif | |
214 | ||
ba02978a LY |
215 | if ((pdata->operating_mode == FSL_USB2_DR_HOST) || |
216 | (pdata->operating_mode == FSL_USB2_DR_OTG)) | |
80cb9aee RV |
217 | mpc83xx_setup_phy(ehci, pdata->phy_mode, 0); |
218 | ||
219 | if (pdata->operating_mode == FSL_USB2_MPH_HOST) { | |
8cd42e97 KG |
220 | unsigned int chip, rev, svr; |
221 | ||
222 | svr = mfspr(SPRN_SVR); | |
223 | chip = svr >> 16; | |
224 | rev = (svr >> 4) & 0xf; | |
225 | ||
226 | /* Deal with USB Erratum #14 on MPC834x Rev 1.0 & 1.1 chips */ | |
227 | if ((rev == 1) && (chip >= 0x8050) && (chip <= 0x8055)) | |
228 | ehci->has_fsl_port_bug = 1; | |
229 | ||
80cb9aee RV |
230 | if (pdata->port_enables & FSL_USB2_PORT0_ENABLED) |
231 | mpc83xx_setup_phy(ehci, pdata->phy_mode, 0); | |
232 | if (pdata->port_enables & FSL_USB2_PORT1_ENABLED) | |
233 | mpc83xx_setup_phy(ehci, pdata->phy_mode, 1); | |
234 | } | |
235 | ||
236 | /* put controller in host mode. */ | |
083522d7 | 237 | ehci_writel(ehci, 0x00000003, non_ehci + FSL_SOC_USB_USBMODE); |
4f534258 SS |
238 | #ifdef CONFIG_PPC_85xx |
239 | out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x00000008); | |
240 | out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000080); | |
241 | #else | |
80cb9aee RV |
242 | out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x0000000c); |
243 | out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000040); | |
4f534258 | 244 | #endif |
80cb9aee RV |
245 | out_be32(non_ehci + FSL_SOC_USB_SICTRL, 0x00000001); |
246 | } | |
247 | ||
248 | /* called after powerup, by probe or system-pm "wakeup" */ | |
249 | static int ehci_fsl_reinit(struct ehci_hcd *ehci) | |
250 | { | |
251 | mpc83xx_usb_setup(ehci_to_hcd(ehci)); | |
252 | ehci_port_power(ehci, 0); | |
253 | ||
254 | return 0; | |
255 | } | |
256 | ||
257 | /* called during probe() after chip reset completes */ | |
258 | static int ehci_fsl_setup(struct usb_hcd *hcd) | |
259 | { | |
260 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); | |
261 | int retval; | |
262 | ||
263 | /* EHCI registers start at offset 0x100 */ | |
264 | ehci->caps = hcd->regs + 0x100; | |
265 | ehci->regs = hcd->regs + 0x100 + | |
083522d7 | 266 | HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase)); |
80cb9aee RV |
267 | dbg_hcs_params(ehci, "reset"); |
268 | dbg_hcc_params(ehci, "reset"); | |
269 | ||
270 | /* cache this readonly data; minimize chip reads */ | |
083522d7 | 271 | ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); |
80cb9aee RV |
272 | |
273 | retval = ehci_halt(ehci); | |
274 | if (retval) | |
275 | return retval; | |
276 | ||
277 | /* data structure init */ | |
278 | retval = ehci_init(hcd); | |
279 | if (retval) | |
280 | return retval; | |
281 | ||
a8e51775 | 282 | hcd->has_tt = 1; |
80cb9aee RV |
283 | |
284 | ehci->sbrn = 0x20; | |
285 | ||
286 | ehci_reset(ehci); | |
287 | ||
288 | retval = ehci_fsl_reinit(ehci); | |
289 | return retval; | |
290 | } | |
291 | ||
1af10774 AV |
292 | struct ehci_fsl { |
293 | struct ehci_hcd ehci; | |
294 | ||
295 | #ifdef CONFIG_PM | |
296 | /* Saved USB PHY settings, need to restore after deep sleep. */ | |
297 | u32 usb_ctrl; | |
298 | #endif | |
299 | }; | |
300 | ||
301 | #ifdef CONFIG_PM | |
302 | ||
303 | static struct ehci_fsl *hcd_to_ehci_fsl(struct usb_hcd *hcd) | |
304 | { | |
305 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); | |
306 | ||
307 | return container_of(ehci, struct ehci_fsl, ehci); | |
308 | } | |
309 | ||
310 | static int ehci_fsl_drv_suspend(struct device *dev) | |
311 | { | |
312 | struct usb_hcd *hcd = dev_get_drvdata(dev); | |
313 | struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd); | |
314 | void __iomem *non_ehci = hcd->regs; | |
315 | ||
316 | if (!fsl_deep_sleep()) | |
317 | return 0; | |
318 | ||
319 | ehci_fsl->usb_ctrl = in_be32(non_ehci + FSL_SOC_USB_CTRL); | |
320 | return 0; | |
321 | } | |
322 | ||
323 | static int ehci_fsl_drv_resume(struct device *dev) | |
324 | { | |
325 | struct usb_hcd *hcd = dev_get_drvdata(dev); | |
326 | struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd); | |
327 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); | |
328 | void __iomem *non_ehci = hcd->regs; | |
329 | ||
330 | if (!fsl_deep_sleep()) | |
331 | return 0; | |
332 | ||
333 | usb_root_hub_lost_power(hcd->self.root_hub); | |
334 | ||
335 | /* Restore USB PHY settings and enable the controller. */ | |
336 | out_be32(non_ehci + FSL_SOC_USB_CTRL, ehci_fsl->usb_ctrl); | |
337 | ||
338 | ehci_reset(ehci); | |
339 | ehci_fsl_reinit(ehci); | |
340 | ||
341 | return 0; | |
342 | } | |
343 | ||
344 | static int ehci_fsl_drv_restore(struct device *dev) | |
345 | { | |
346 | struct usb_hcd *hcd = dev_get_drvdata(dev); | |
347 | ||
348 | usb_root_hub_lost_power(hcd->self.root_hub); | |
349 | return 0; | |
350 | } | |
351 | ||
352 | static struct dev_pm_ops ehci_fsl_pm_ops = { | |
353 | .suspend = ehci_fsl_drv_suspend, | |
354 | .resume = ehci_fsl_drv_resume, | |
355 | .restore = ehci_fsl_drv_restore, | |
356 | }; | |
357 | ||
358 | #define EHCI_FSL_PM_OPS (&ehci_fsl_pm_ops) | |
359 | #else | |
360 | #define EHCI_FSL_PM_OPS NULL | |
361 | #endif /* CONFIG_PM */ | |
362 | ||
80cb9aee RV |
363 | static const struct hc_driver ehci_fsl_hc_driver = { |
364 | .description = hcd_name, | |
365 | .product_desc = "Freescale On-Chip EHCI Host Controller", | |
1af10774 | 366 | .hcd_priv_size = sizeof(struct ehci_fsl), |
80cb9aee RV |
367 | |
368 | /* | |
369 | * generic hardware linkage | |
370 | */ | |
371 | .irq = ehci_irq, | |
372 | .flags = HCD_USB2, | |
373 | ||
374 | /* | |
375 | * basic lifecycle operations | |
376 | */ | |
377 | .reset = ehci_fsl_setup, | |
378 | .start = ehci_run, | |
80cb9aee | 379 | .stop = ehci_stop, |
64a21d02 | 380 | .shutdown = ehci_shutdown, |
80cb9aee RV |
381 | |
382 | /* | |
383 | * managing i/o requests and associated device resources | |
384 | */ | |
385 | .urb_enqueue = ehci_urb_enqueue, | |
386 | .urb_dequeue = ehci_urb_dequeue, | |
387 | .endpoint_disable = ehci_endpoint_disable, | |
b18ffd49 | 388 | .endpoint_reset = ehci_endpoint_reset, |
80cb9aee RV |
389 | |
390 | /* | |
391 | * scheduling support | |
392 | */ | |
393 | .get_frame_number = ehci_get_frame, | |
394 | ||
395 | /* | |
396 | * root hub support | |
397 | */ | |
398 | .hub_status_data = ehci_hub_status_data, | |
399 | .hub_control = ehci_hub_control, | |
400 | .bus_suspend = ehci_bus_suspend, | |
401 | .bus_resume = ehci_bus_resume, | |
90da096e | 402 | .relinquish_port = ehci_relinquish_port, |
3a31155c | 403 | .port_handed_over = ehci_port_handed_over, |
914b7012 AS |
404 | |
405 | .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, | |
80cb9aee RV |
406 | }; |
407 | ||
408 | static int ehci_fsl_drv_probe(struct platform_device *pdev) | |
409 | { | |
410 | if (usb_disabled()) | |
411 | return -ENODEV; | |
412 | ||
135db048 | 413 | /* FIXME we only want one one probe() not two */ |
80cb9aee RV |
414 | return usb_hcd_fsl_probe(&ehci_fsl_hc_driver, pdev); |
415 | } | |
416 | ||
417 | static int ehci_fsl_drv_remove(struct platform_device *pdev) | |
418 | { | |
419 | struct usb_hcd *hcd = platform_get_drvdata(pdev); | |
420 | ||
135db048 | 421 | /* FIXME we only want one one remove() not two */ |
80cb9aee | 422 | usb_hcd_fsl_remove(hcd, pdev); |
80cb9aee RV |
423 | return 0; |
424 | } | |
425 | ||
135db048 | 426 | MODULE_ALIAS("platform:fsl-ehci"); |
80cb9aee | 427 | |
01cced25 | 428 | static struct platform_driver ehci_fsl_driver = { |
80cb9aee RV |
429 | .probe = ehci_fsl_drv_probe, |
430 | .remove = ehci_fsl_drv_remove, | |
64a21d02 | 431 | .shutdown = usb_hcd_platform_shutdown, |
80cb9aee | 432 | .driver = { |
1af10774 AV |
433 | .name = "fsl-ehci", |
434 | .pm = EHCI_FSL_PM_OPS, | |
135db048 | 435 | }, |
80cb9aee | 436 | }; |