2 * Copyright (c) 2005 MontaVista Software
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License as published by the
6 * Free Software Foundation; either version 2 of the License, or (at your
7 * option) any later version.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
11 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software Foundation,
16 * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 * Ported to 834x by Randy Vinson <rvinson@mvista.com> using code provided
22 #include <linux/platform_device.h>
23 #include <linux/fsl_devices.h>
27 /* FIXME: Power Management is un-ported so temporarily disable it */
31 /* configure so an HC device and id are always provided */
32 /* always called with process context; sleeping is OK */
35 * usb_hcd_fsl_probe - initialize FSL-based HCDs
36 * @drvier: Driver to be used for this HCD
37 * @pdev: USB Host Controller being probed
38 * Context: !in_interrupt()
40 * Allocates basic resources for this USB host controller.
43 int usb_hcd_fsl_probe(const struct hc_driver *driver,
44 struct platform_device *pdev)
46 struct fsl_usb2_platform_data *pdata;
53 pr_debug("initializing FSL-SOC USB Controller\n");
55 /* Need platform data for setup */
56 pdata = (struct fsl_usb2_platform_data *)pdev->dev.platform_data;
59 "No platform data for %s.\n", dev_name(&pdev->dev));
64 * This is a host mode driver, verify that we're supposed to be
67 if (!((pdata->operating_mode == FSL_USB2_DR_HOST) ||
68 (pdata->operating_mode == FSL_USB2_MPH_HOST) ||
69 (pdata->operating_mode == FSL_USB2_DR_OTG))) {
71 "Non Host Mode configured for %s. Wrong driver linked.\n",
72 dev_name(&pdev->dev));
76 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
79 "Found HC with no IRQ. Check %s setup!\n",
80 dev_name(&pdev->dev));
85 hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
91 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
94 "Found HC with no register addr. Check %s setup!\n",
95 dev_name(&pdev->dev));
99 hcd->rsrc_start = res->start;
100 hcd->rsrc_len = res->end - res->start + 1;
101 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
102 driver->description)) {
103 dev_dbg(&pdev->dev, "controller already in use\n");
107 hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
109 if (hcd->regs == NULL) {
110 dev_dbg(&pdev->dev, "error mapping memory\n");
115 /* Enable USB controller */
116 temp = in_be32(hcd->regs + 0x500);
117 out_be32(hcd->regs + 0x500, temp | 0x4);
119 /* Set to Host mode */
120 temp = in_le32(hcd->regs + 0x1a8);
121 out_le32(hcd->regs + 0x1a8, temp | 0x3);
123 retval = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
131 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
135 dev_err(&pdev->dev, "init %s fail, %d\n", dev_name(&pdev->dev), retval);
139 /* may be called without controller electrically present */
140 /* may be called with controller, bus, and devices active */
143 * usb_hcd_fsl_remove - shutdown processing for FSL-based HCDs
144 * @dev: USB Host Controller being removed
145 * Context: !in_interrupt()
147 * Reverses the effect of usb_hcd_fsl_probe().
150 void usb_hcd_fsl_remove(struct usb_hcd *hcd, struct platform_device *pdev)
154 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
158 static void mpc83xx_setup_phy(struct ehci_hcd *ehci,
159 enum fsl_usb2_phy_modes phy_mode,
160 unsigned int port_offset)
164 case FSL_USB2_PHY_ULPI:
165 portsc |= PORT_PTS_ULPI;
167 case FSL_USB2_PHY_SERIAL:
168 portsc |= PORT_PTS_SERIAL;
170 case FSL_USB2_PHY_UTMI_WIDE:
171 portsc |= PORT_PTS_PTW;
173 case FSL_USB2_PHY_UTMI:
174 portsc |= PORT_PTS_UTMI;
176 case FSL_USB2_PHY_NONE:
179 ehci_writel(ehci, portsc, &ehci->regs->port_status[port_offset]);
182 static void mpc83xx_usb_setup(struct usb_hcd *hcd)
184 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
185 struct fsl_usb2_platform_data *pdata;
186 void __iomem *non_ehci = hcd->regs;
190 (struct fsl_usb2_platform_data *)hcd->self.controller->
192 /* Enable PHY interface in the control reg. */
193 temp = in_be32(non_ehci + FSL_SOC_USB_CTRL);
194 out_be32(non_ehci + FSL_SOC_USB_CTRL, temp | 0x00000004);
195 out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0000001b);
197 #if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE)
199 * Turn on cache snooping hardware, since some PowerPC platforms
200 * wholly rely on hardware to deal with cache coherent
203 /* Setup Snooping for all the 4GB space */
204 /* SNOOP1 starts from 0x0, size 2G */
205 out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0 | SNOOP_SIZE_2GB);
206 /* SNOOP2 starts from 0x80000000, size 2G */
207 out_be32(non_ehci + FSL_SOC_USB_SNOOP2, 0x80000000 | SNOOP_SIZE_2GB);
210 if ((pdata->operating_mode == FSL_USB2_DR_HOST) ||
211 (pdata->operating_mode == FSL_USB2_DR_OTG))
212 mpc83xx_setup_phy(ehci, pdata->phy_mode, 0);
214 if (pdata->operating_mode == FSL_USB2_MPH_HOST) {
215 unsigned int chip, rev, svr;
217 svr = mfspr(SPRN_SVR);
219 rev = (svr >> 4) & 0xf;
221 /* Deal with USB Erratum #14 on MPC834x Rev 1.0 & 1.1 chips */
222 if ((rev == 1) && (chip >= 0x8050) && (chip <= 0x8055))
223 ehci->has_fsl_port_bug = 1;
225 if (pdata->port_enables & FSL_USB2_PORT0_ENABLED)
226 mpc83xx_setup_phy(ehci, pdata->phy_mode, 0);
227 if (pdata->port_enables & FSL_USB2_PORT1_ENABLED)
228 mpc83xx_setup_phy(ehci, pdata->phy_mode, 1);
231 /* put controller in host mode. */
232 ehci_writel(ehci, 0x00000003, non_ehci + FSL_SOC_USB_USBMODE);
233 #ifdef CONFIG_PPC_85xx
234 out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x00000008);
235 out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000080);
237 out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x0000000c);
238 out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000040);
240 out_be32(non_ehci + FSL_SOC_USB_SICTRL, 0x00000001);
243 /* called after powerup, by probe or system-pm "wakeup" */
244 static int ehci_fsl_reinit(struct ehci_hcd *ehci)
246 mpc83xx_usb_setup(ehci_to_hcd(ehci));
247 ehci_port_power(ehci, 0);
252 /* called during probe() after chip reset completes */
253 static int ehci_fsl_setup(struct usb_hcd *hcd)
255 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
258 /* EHCI registers start at offset 0x100 */
259 ehci->caps = hcd->regs + 0x100;
260 ehci->regs = hcd->regs + 0x100 +
261 HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
262 dbg_hcs_params(ehci, "reset");
263 dbg_hcc_params(ehci, "reset");
265 /* cache this readonly data; minimize chip reads */
266 ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
268 retval = ehci_halt(ehci);
272 /* data structure init */
273 retval = ehci_init(hcd);
283 retval = ehci_fsl_reinit(ehci);
287 static const struct hc_driver ehci_fsl_hc_driver = {
288 .description = hcd_name,
289 .product_desc = "Freescale On-Chip EHCI Host Controller",
290 .hcd_priv_size = sizeof(struct ehci_hcd),
293 * generic hardware linkage
299 * basic lifecycle operations
301 .reset = ehci_fsl_setup,
304 .shutdown = ehci_shutdown,
307 * managing i/o requests and associated device resources
309 .urb_enqueue = ehci_urb_enqueue,
310 .urb_dequeue = ehci_urb_dequeue,
311 .endpoint_disable = ehci_endpoint_disable,
316 .get_frame_number = ehci_get_frame,
321 .hub_status_data = ehci_hub_status_data,
322 .hub_control = ehci_hub_control,
323 .bus_suspend = ehci_bus_suspend,
324 .bus_resume = ehci_bus_resume,
325 .relinquish_port = ehci_relinquish_port,
326 .port_handed_over = ehci_port_handed_over,
329 static int ehci_fsl_drv_probe(struct platform_device *pdev)
334 /* FIXME we only want one one probe() not two */
335 return usb_hcd_fsl_probe(&ehci_fsl_hc_driver, pdev);
338 static int ehci_fsl_drv_remove(struct platform_device *pdev)
340 struct usb_hcd *hcd = platform_get_drvdata(pdev);
342 /* FIXME we only want one one remove() not two */
343 usb_hcd_fsl_remove(hcd, pdev);
347 MODULE_ALIAS("platform:fsl-ehci");
349 static struct platform_driver ehci_fsl_driver = {
350 .probe = ehci_fsl_drv_probe,
351 .remove = ehci_fsl_drv_remove,
352 .shutdown = usb_hcd_platform_shutdown,