blob: 1a915e982c1c49a9c671d2769f23fad04f6909a1 [file] [log] [blame]
Randy Vinson80cb9ae2006-01-20 13:53:38 -08001/*
2 * (C) Copyright David Brownell 2000-2002
3 * Copyright (c) 2005 MontaVista Software
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.
21 */
22
23#include <linux/platform_device.h>
24#include <linux/fsl_devices.h>
25
26#include "ehci-fsl.h"
27
28/* FIXME: Power Managment is un-ported so temporarily disable it */
29#undef CONFIG_PM
30
31/* PCI-based HCs are common, but plenty of non-PCI HCs are used too */
32
33/* configure so an HC device and id are always provided */
34/* always called with process context; sleeping is OK */
35
36/**
37 * usb_hcd_fsl_probe - initialize FSL-based HCDs
38 * @drvier: Driver to be used for this HCD
39 * @pdev: USB Host Controller being probed
40 * Context: !in_interrupt()
41 *
42 * Allocates basic resources for this USB host controller.
43 *
44 */
45int usb_hcd_fsl_probe(const struct hc_driver *driver,
46 struct platform_device *pdev)
47{
48 struct fsl_usb2_platform_data *pdata;
49 struct usb_hcd *hcd;
50 struct resource *res;
51 int irq;
52 int retval;
53 unsigned int temp;
54
55 pr_debug("initializing FSL-SOC USB Controller\n");
56
57 /* Need platform data for setup */
58 pdata = (struct fsl_usb2_platform_data *)pdev->dev.platform_data;
59 if (!pdata) {
60 dev_err(&pdev->dev,
61 "No platform data for %s.\n", pdev->dev.bus_id);
62 return -ENODEV;
63 }
64
65 /*
66 * This is a host mode driver, verify that we're supposed to be
67 * in host mode.
68 */
69 if (!((pdata->operating_mode == FSL_USB2_DR_HOST) ||
70 (pdata->operating_mode == FSL_USB2_MPH_HOST))) {
71 dev_err(&pdev->dev,
72 "Non Host Mode configured for %s. Wrong driver linked.\n",
73 pdev->dev.bus_id);
74 return -ENODEV;
75 }
76
77 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
78 if (!res) {
79 dev_err(&pdev->dev,
80 "Found HC with no IRQ. Check %s setup!\n",
81 pdev->dev.bus_id);
82 return -ENODEV;
83 }
84 irq = res->start;
85
86 hcd = usb_create_hcd(driver, &pdev->dev, pdev->dev.bus_id);
87 if (!hcd) {
88 retval = -ENOMEM;
89 goto err1;
90 }
91
92 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
93 if (!res) {
94 dev_err(&pdev->dev,
95 "Found HC with no register addr. Check %s setup!\n",
96 pdev->dev.bus_id);
97 retval = -ENODEV;
98 goto err2;
99 }
100 hcd->rsrc_start = res->start;
101 hcd->rsrc_len = res->end - res->start + 1;
102 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
103 driver->description)) {
104 dev_dbg(&pdev->dev, "controller already in use\n");
105 retval = -EBUSY;
106 goto err2;
107 }
108 hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
109
110 if (hcd->regs == NULL) {
111 dev_dbg(&pdev->dev, "error mapping memory\n");
112 retval = -EFAULT;
113 goto err3;
114 }
115
116 /* Enable USB controller */
117 temp = in_be32(hcd->regs + 0x500);
118 out_be32(hcd->regs + 0x500, temp | 0x4);
119
120 /* Set to Host mode */
121 temp = in_le32(hcd->regs + 0x1a8);
122 out_le32(hcd->regs + 0x1a8, temp | 0x3);
123
Thomas Gleixnerd54b5ca2006-07-01 19:29:44 -0700124 retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
Randy Vinson80cb9ae2006-01-20 13:53:38 -0800125 if (retval != 0)
126 goto err4;
127 return retval;
128
129 err4:
130 iounmap(hcd->regs);
131 err3:
132 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
133 err2:
134 usb_put_hcd(hcd);
135 err1:
136 dev_err(&pdev->dev, "init %s fail, %d\n", pdev->dev.bus_id, retval);
137 return retval;
138}
139
140/* may be called without controller electrically present */
141/* may be called with controller, bus, and devices active */
142
143/**
144 * usb_hcd_fsl_remove - shutdown processing for FSL-based HCDs
145 * @dev: USB Host Controller being removed
146 * Context: !in_interrupt()
147 *
148 * Reverses the effect of usb_hcd_fsl_probe().
149 *
150 */
151void usb_hcd_fsl_remove(struct usb_hcd *hcd, struct platform_device *pdev)
152{
153 usb_remove_hcd(hcd);
154 iounmap(hcd->regs);
155 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
156 usb_put_hcd(hcd);
157}
158
159static void mpc83xx_setup_phy(struct ehci_hcd *ehci,
160 enum fsl_usb2_phy_modes phy_mode,
161 unsigned int port_offset)
162{
Kumar Gala499003e82006-01-24 08:11:27 -0800163 u32 portsc = 0;
Randy Vinson80cb9ae2006-01-20 13:53:38 -0800164 switch (phy_mode) {
165 case FSL_USB2_PHY_ULPI:
166 portsc |= PORT_PTS_ULPI;
167 break;
168 case FSL_USB2_PHY_SERIAL:
169 portsc |= PORT_PTS_SERIAL;
170 break;
171 case FSL_USB2_PHY_UTMI_WIDE:
172 portsc |= PORT_PTS_PTW;
173 /* fall through */
174 case FSL_USB2_PHY_UTMI:
175 portsc |= PORT_PTS_UTMI;
176 break;
177 case FSL_USB2_PHY_NONE:
178 break;
179 }
180 writel(portsc, &ehci->regs->port_status[port_offset]);
181}
182
183static void mpc83xx_usb_setup(struct usb_hcd *hcd)
184{
185 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
186 struct fsl_usb2_platform_data *pdata;
187 void __iomem *non_ehci = hcd->regs;
188
189 pdata =
190 (struct fsl_usb2_platform_data *)hcd->self.controller->
191 platform_data;
192 /* Enable PHY interface in the control reg. */
193 out_be32(non_ehci + FSL_SOC_USB_CTRL, 0x00000004);
194 out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0000001b);
195
196 if (pdata->operating_mode == FSL_USB2_DR_HOST)
197 mpc83xx_setup_phy(ehci, pdata->phy_mode, 0);
198
199 if (pdata->operating_mode == FSL_USB2_MPH_HOST) {
Kumar Gala8cd42e92006-01-20 13:57:52 -0800200 unsigned int chip, rev, svr;
201
202 svr = mfspr(SPRN_SVR);
203 chip = svr >> 16;
204 rev = (svr >> 4) & 0xf;
205
206 /* Deal with USB Erratum #14 on MPC834x Rev 1.0 & 1.1 chips */
207 if ((rev == 1) && (chip >= 0x8050) && (chip <= 0x8055))
208 ehci->has_fsl_port_bug = 1;
209
Randy Vinson80cb9ae2006-01-20 13:53:38 -0800210 if (pdata->port_enables & FSL_USB2_PORT0_ENABLED)
211 mpc83xx_setup_phy(ehci, pdata->phy_mode, 0);
212 if (pdata->port_enables & FSL_USB2_PORT1_ENABLED)
213 mpc83xx_setup_phy(ehci, pdata->phy_mode, 1);
214 }
215
216 /* put controller in host mode. */
217 writel(0x00000003, non_ehci + FSL_SOC_USB_USBMODE);
218 out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x0000000c);
219 out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000040);
220 out_be32(non_ehci + FSL_SOC_USB_SICTRL, 0x00000001);
221}
222
223/* called after powerup, by probe or system-pm "wakeup" */
224static int ehci_fsl_reinit(struct ehci_hcd *ehci)
225{
226 mpc83xx_usb_setup(ehci_to_hcd(ehci));
227 ehci_port_power(ehci, 0);
228
229 return 0;
230}
231
232/* called during probe() after chip reset completes */
233static int ehci_fsl_setup(struct usb_hcd *hcd)
234{
235 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
236 int retval;
237
238 /* EHCI registers start at offset 0x100 */
239 ehci->caps = hcd->regs + 0x100;
240 ehci->regs = hcd->regs + 0x100 +
241 HC_LENGTH(readl(&ehci->caps->hc_capbase));
242 dbg_hcs_params(ehci, "reset");
243 dbg_hcc_params(ehci, "reset");
244
245 /* cache this readonly data; minimize chip reads */
246 ehci->hcs_params = readl(&ehci->caps->hcs_params);
247
248 retval = ehci_halt(ehci);
249 if (retval)
250 return retval;
251
252 /* data structure init */
253 retval = ehci_init(hcd);
254 if (retval)
255 return retval;
256
257 ehci->is_tdi_rh_tt = 1;
258
259 ehci->sbrn = 0x20;
260
261 ehci_reset(ehci);
262
263 retval = ehci_fsl_reinit(ehci);
264 return retval;
265}
266
267static const struct hc_driver ehci_fsl_hc_driver = {
268 .description = hcd_name,
269 .product_desc = "Freescale On-Chip EHCI Host Controller",
270 .hcd_priv_size = sizeof(struct ehci_hcd),
271
272 /*
273 * generic hardware linkage
274 */
275 .irq = ehci_irq,
276 .flags = HCD_USB2,
277
278 /*
279 * basic lifecycle operations
280 */
281 .reset = ehci_fsl_setup,
282 .start = ehci_run,
283#ifdef CONFIG_PM
284 .suspend = ehci_bus_suspend,
285 .resume = ehci_bus_resume,
286#endif
287 .stop = ehci_stop,
Aleksey Gorelov64a21d02006-08-08 17:24:08 -0700288 .shutdown = ehci_shutdown,
Randy Vinson80cb9ae2006-01-20 13:53:38 -0800289
290 /*
291 * managing i/o requests and associated device resources
292 */
293 .urb_enqueue = ehci_urb_enqueue,
294 .urb_dequeue = ehci_urb_dequeue,
295 .endpoint_disable = ehci_endpoint_disable,
296
297 /*
298 * scheduling support
299 */
300 .get_frame_number = ehci_get_frame,
301
302 /*
303 * root hub support
304 */
305 .hub_status_data = ehci_hub_status_data,
306 .hub_control = ehci_hub_control,
307 .bus_suspend = ehci_bus_suspend,
308 .bus_resume = ehci_bus_resume,
309};
310
311static int ehci_fsl_drv_probe(struct platform_device *pdev)
312{
313 if (usb_disabled())
314 return -ENODEV;
315
316 return usb_hcd_fsl_probe(&ehci_fsl_hc_driver, pdev);
317}
318
319static int ehci_fsl_drv_remove(struct platform_device *pdev)
320{
321 struct usb_hcd *hcd = platform_get_drvdata(pdev);
322
323 usb_hcd_fsl_remove(hcd, pdev);
324
325 return 0;
326}
327
Kumar Gala01cced22006-04-11 10:07:16 -0500328MODULE_ALIAS("fsl-ehci");
329
330static struct platform_driver ehci_fsl_driver = {
Randy Vinson80cb9ae2006-01-20 13:53:38 -0800331 .probe = ehci_fsl_drv_probe,
332 .remove = ehci_fsl_drv_remove,
Aleksey Gorelov64a21d02006-08-08 17:24:08 -0700333 .shutdown = usb_hcd_platform_shutdown,
Randy Vinson80cb9ae2006-01-20 13:53:38 -0800334 .driver = {
Kumar Gala01cced22006-04-11 10:07:16 -0500335 .name = "fsl-ehci",
Randy Vinson80cb9ae2006-01-20 13:53:38 -0800336 },
337};