USB: EHCI: use the new clear_tt_buffer interface
[linux-2.6/mini2440.git] / drivers / usb / host / ehci-orion.c
blobdc2ac613a9d1c34e2942ff55bf639fcb9d0be29b
1 /*
2 * drivers/usb/host/ehci-orion.c
4 * Tzachi Perelstein <tzachi@marvell.com>
6 * This file is licensed under the terms of the GNU General Public
7 * License version 2. This program is licensed "as is" without any
8 * warranty of any kind, whether express or implied.
9 */
11 #include <linux/kernel.h>
12 #include <linux/module.h>
13 #include <linux/platform_device.h>
14 #include <linux/mbus.h>
15 #include <plat/ehci-orion.h>
17 #define rdl(off) __raw_readl(hcd->regs + (off))
18 #define wrl(off, val) __raw_writel((val), hcd->regs + (off))
20 #define USB_CMD 0x140
21 #define USB_MODE 0x1a8
22 #define USB_CAUSE 0x310
23 #define USB_MASK 0x314
24 #define USB_WINDOW_CTRL(i) (0x320 + ((i) << 4))
25 #define USB_WINDOW_BASE(i) (0x324 + ((i) << 4))
26 #define USB_IPG 0x360
27 #define USB_PHY_PWR_CTRL 0x400
28 #define USB_PHY_TX_CTRL 0x420
29 #define USB_PHY_RX_CTRL 0x430
30 #define USB_PHY_IVREF_CTRL 0x440
31 #define USB_PHY_TST_GRP_CTRL 0x450
34 * Implement Orion USB controller specification guidelines
36 static void orion_usb_phy_v1_setup(struct usb_hcd *hcd)
38 /* The below GLs are according to the Orion Errata document */
40 * Clear interrupt cause and mask
42 wrl(USB_CAUSE, 0);
43 wrl(USB_MASK, 0);
46 * Reset controller
48 wrl(USB_CMD, rdl(USB_CMD) | 0x2);
49 while (rdl(USB_CMD) & 0x2);
52 * GL# USB-10: Set IPG for non start of frame packets
53 * Bits[14:8]=0xc
55 wrl(USB_IPG, (rdl(USB_IPG) & ~0x7f00) | 0xc00);
58 * GL# USB-9: USB 2.0 Power Control
59 * BG_VSEL[7:6]=0x1
61 wrl(USB_PHY_PWR_CTRL, (rdl(USB_PHY_PWR_CTRL) & ~0xc0)| 0x40);
64 * GL# USB-1: USB PHY Tx Control - force calibration to '8'
65 * TXDATA_BLOCK_EN[21]=0x1, EXT_RCAL_EN[13]=0x1, IMP_CAL[6:3]=0x8
67 wrl(USB_PHY_TX_CTRL, (rdl(USB_PHY_TX_CTRL) & ~0x78) | 0x202040);
70 * GL# USB-3 GL# USB-9: USB PHY Rx Control
71 * RXDATA_BLOCK_LENGHT[31:30]=0x3, EDGE_DET_SEL[27:26]=0,
72 * CDR_FASTLOCK_EN[21]=0, DISCON_THRESHOLD[9:8]=0, SQ_THRESH[7:4]=0x1
74 wrl(USB_PHY_RX_CTRL, (rdl(USB_PHY_RX_CTRL) & ~0xc2003f0) | 0xc0000010);
77 * GL# USB-3 GL# USB-9: USB PHY IVREF Control
78 * PLLVDD12[1:0]=0x2, RXVDD[5:4]=0x3, Reserved[19]=0
80 wrl(USB_PHY_IVREF_CTRL, (rdl(USB_PHY_IVREF_CTRL) & ~0x80003 ) | 0x32);
83 * GL# USB-3 GL# USB-9: USB PHY Test Group Control
84 * REG_FIFO_SQ_RST[15]=0
86 wrl(USB_PHY_TST_GRP_CTRL, rdl(USB_PHY_TST_GRP_CTRL) & ~0x8000);
89 * Stop and reset controller
91 wrl(USB_CMD, rdl(USB_CMD) & ~0x1);
92 wrl(USB_CMD, rdl(USB_CMD) | 0x2);
93 while (rdl(USB_CMD) & 0x2);
96 * GL# USB-5 Streaming disable REG_USB_MODE[4]=1
97 * TBD: This need to be done after each reset!
98 * GL# USB-4 Setup USB Host mode
100 wrl(USB_MODE, 0x13);
103 static int ehci_orion_setup(struct usb_hcd *hcd)
105 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
106 int retval;
108 retval = ehci_halt(ehci);
109 if (retval)
110 return retval;
113 * data structure init
115 retval = ehci_init(hcd);
116 if (retval)
117 return retval;
119 hcd->has_tt = 1;
121 ehci_reset(ehci);
122 ehci_port_power(ehci, 0);
124 return retval;
127 static const struct hc_driver ehci_orion_hc_driver = {
128 .description = hcd_name,
129 .product_desc = "Marvell Orion EHCI",
130 .hcd_priv_size = sizeof(struct ehci_hcd),
133 * generic hardware linkage
135 .irq = ehci_irq,
136 .flags = HCD_MEMORY | HCD_USB2,
139 * basic lifecycle operations
141 .reset = ehci_orion_setup,
142 .start = ehci_run,
143 .stop = ehci_stop,
144 .shutdown = ehci_shutdown,
147 * managing i/o requests and associated device resources
149 .urb_enqueue = ehci_urb_enqueue,
150 .urb_dequeue = ehci_urb_dequeue,
151 .endpoint_disable = ehci_endpoint_disable,
152 .endpoint_reset = ehci_endpoint_reset,
155 * scheduling support
157 .get_frame_number = ehci_get_frame,
160 * root hub support
162 .hub_status_data = ehci_hub_status_data,
163 .hub_control = ehci_hub_control,
164 .bus_suspend = ehci_bus_suspend,
165 .bus_resume = ehci_bus_resume,
166 .relinquish_port = ehci_relinquish_port,
167 .port_handed_over = ehci_port_handed_over,
169 .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
172 static void __init
173 ehci_orion_conf_mbus_windows(struct usb_hcd *hcd,
174 struct mbus_dram_target_info *dram)
176 int i;
178 for (i = 0; i < 4; i++) {
179 wrl(USB_WINDOW_CTRL(i), 0);
180 wrl(USB_WINDOW_BASE(i), 0);
183 for (i = 0; i < dram->num_cs; i++) {
184 struct mbus_dram_window *cs = dram->cs + i;
186 wrl(USB_WINDOW_CTRL(i), ((cs->size - 1) & 0xffff0000) |
187 (cs->mbus_attr << 8) |
188 (dram->mbus_dram_target_id << 4) | 1);
189 wrl(USB_WINDOW_BASE(i), cs->base);
193 static int __devinit ehci_orion_drv_probe(struct platform_device *pdev)
195 struct orion_ehci_data *pd = pdev->dev.platform_data;
196 struct resource *res;
197 struct usb_hcd *hcd;
198 struct ehci_hcd *ehci;
199 void __iomem *regs;
200 int irq, err;
202 if (usb_disabled())
203 return -ENODEV;
205 pr_debug("Initializing Orion-SoC USB Host Controller\n");
207 irq = platform_get_irq(pdev, 0);
208 if (irq <= 0) {
209 dev_err(&pdev->dev,
210 "Found HC with no IRQ. Check %s setup!\n",
211 dev_name(&pdev->dev));
212 err = -ENODEV;
213 goto err1;
216 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
217 if (!res) {
218 dev_err(&pdev->dev,
219 "Found HC with no register addr. Check %s setup!\n",
220 dev_name(&pdev->dev));
221 err = -ENODEV;
222 goto err1;
225 if (!request_mem_region(res->start, res->end - res->start + 1,
226 ehci_orion_hc_driver.description)) {
227 dev_dbg(&pdev->dev, "controller already in use\n");
228 err = -EBUSY;
229 goto err1;
232 regs = ioremap(res->start, res->end - res->start + 1);
233 if (regs == NULL) {
234 dev_dbg(&pdev->dev, "error mapping memory\n");
235 err = -EFAULT;
236 goto err2;
239 hcd = usb_create_hcd(&ehci_orion_hc_driver,
240 &pdev->dev, dev_name(&pdev->dev));
241 if (!hcd) {
242 err = -ENOMEM;
243 goto err3;
246 hcd->rsrc_start = res->start;
247 hcd->rsrc_len = res->end - res->start + 1;
248 hcd->regs = regs;
250 ehci = hcd_to_ehci(hcd);
251 ehci->caps = hcd->regs + 0x100;
252 ehci->regs = hcd->regs + 0x100 +
253 HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
254 ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
255 hcd->has_tt = 1;
256 ehci->sbrn = 0x20;
259 * (Re-)program MBUS remapping windows if we are asked to.
261 if (pd != NULL && pd->dram != NULL)
262 ehci_orion_conf_mbus_windows(hcd, pd->dram);
265 * setup Orion USB controller.
267 switch (pd->phy_version) {
268 case EHCI_PHY_NA: /* dont change USB phy settings */
269 break;
270 case EHCI_PHY_ORION:
271 orion_usb_phy_v1_setup(hcd);
272 break;
273 case EHCI_PHY_DD:
274 case EHCI_PHY_KW:
275 default:
276 printk(KERN_WARNING "Orion ehci -USB phy version isn't supported.\n");
279 err = usb_add_hcd(hcd, irq, IRQF_SHARED | IRQF_DISABLED);
280 if (err)
281 goto err4;
283 return 0;
285 err4:
286 usb_put_hcd(hcd);
287 err3:
288 iounmap(regs);
289 err2:
290 release_mem_region(res->start, res->end - res->start + 1);
291 err1:
292 dev_err(&pdev->dev, "init %s fail, %d\n",
293 dev_name(&pdev->dev), err);
295 return err;
298 static int __exit ehci_orion_drv_remove(struct platform_device *pdev)
300 struct usb_hcd *hcd = platform_get_drvdata(pdev);
302 usb_remove_hcd(hcd);
303 iounmap(hcd->regs);
304 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
305 usb_put_hcd(hcd);
307 return 0;
310 MODULE_ALIAS("platform:orion-ehci");
312 static struct platform_driver ehci_orion_driver = {
313 .probe = ehci_orion_drv_probe,
314 .remove = __exit_p(ehci_orion_drv_remove),
315 .shutdown = usb_hcd_platform_shutdown,
316 .driver.name = "orion-ehci",