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Tzachi Perelsteine96ffe22007-12-01 11:07:04 -05001/*
2 * drivers/usb/host/ehci-orion.c
3 *
4 * Tzachi Perelstein <tzachi@marvell.com>
5 *
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 */
10
11#include <linux/kernel.h>
12#include <linux/module.h>
13#include <linux/platform_device.h>
Lennert Buytenhek92aecfa2008-03-27 14:51:39 -040014#include <linux/mbus.h>
Lennert Buytenhek6f088f12008-08-09 13:44:58 +020015#include <plat/ehci-orion.h>
Tzachi Perelsteine96ffe22007-12-01 11:07:04 -050016
17#define rdl(off) __raw_readl(hcd->regs + (off))
18#define wrl(off, val) __raw_writel((val), hcd->regs + (off))
19
Tzachi Perelsteine96ffe22007-12-01 11:07:04 -050020#define USB_CMD 0x140
21#define USB_MODE 0x1a8
Lennert Buytenhek92aecfa2008-03-27 14:51:39 -040022#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))
Tzachi Perelsteine96ffe22007-12-01 11:07:04 -050026#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
32
33/*
34 * Implement Orion USB controller specification guidelines
35 */
Ronen Shitritfb6f5522008-09-17 10:08:05 +030036static void orion_usb_phy_v1_setup(struct usb_hcd *hcd)
Tzachi Perelsteine96ffe22007-12-01 11:07:04 -050037{
Ronen Shitritfb6f5522008-09-17 10:08:05 +030038 /* The below GLs are according to the Orion Errata document */
Tzachi Perelsteine96ffe22007-12-01 11:07:04 -050039 /*
40 * Clear interrupt cause and mask
41 */
42 wrl(USB_CAUSE, 0);
43 wrl(USB_MASK, 0);
44
45 /*
46 * Reset controller
47 */
48 wrl(USB_CMD, rdl(USB_CMD) | 0x2);
49 while (rdl(USB_CMD) & 0x2);
50
51 /*
52 * GL# USB-10: Set IPG for non start of frame packets
53 * Bits[14:8]=0xc
54 */
55 wrl(USB_IPG, (rdl(USB_IPG) & ~0x7f00) | 0xc00);
56
57 /*
58 * GL# USB-9: USB 2.0 Power Control
59 * BG_VSEL[7:6]=0x1
60 */
61 wrl(USB_PHY_PWR_CTRL, (rdl(USB_PHY_PWR_CTRL) & ~0xc0)| 0x40);
62
63 /*
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
66 */
67 wrl(USB_PHY_TX_CTRL, (rdl(USB_PHY_TX_CTRL) & ~0x78) | 0x202040);
68
69 /*
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
73 */
74 wrl(USB_PHY_RX_CTRL, (rdl(USB_PHY_RX_CTRL) & ~0xc2003f0) | 0xc0000010);
75
76 /*
77 * GL# USB-3 GL# USB-9: USB PHY IVREF Control
78 * PLLVDD12[1:0]=0x2, RXVDD[5:4]=0x3, Reserved[19]=0
79 */
80 wrl(USB_PHY_IVREF_CTRL, (rdl(USB_PHY_IVREF_CTRL) & ~0x80003 ) | 0x32);
81
82 /*
83 * GL# USB-3 GL# USB-9: USB PHY Test Group Control
84 * REG_FIFO_SQ_RST[15]=0
85 */
86 wrl(USB_PHY_TST_GRP_CTRL, rdl(USB_PHY_TST_GRP_CTRL) & ~0x8000);
87
88 /*
89 * Stop and reset controller
90 */
91 wrl(USB_CMD, rdl(USB_CMD) & ~0x1);
92 wrl(USB_CMD, rdl(USB_CMD) | 0x2);
93 while (rdl(USB_CMD) & 0x2);
94
95 /*
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
99 */
100 wrl(USB_MODE, 0x13);
101}
102
103static int ehci_orion_setup(struct usb_hcd *hcd)
104{
105 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
106 int retval;
107
Simon Kagstrombcfa4e62009-07-13 08:25:09 +0200108 ehci_reset(ehci);
Tzachi Perelsteine96ffe22007-12-01 11:07:04 -0500109 retval = ehci_halt(ehci);
110 if (retval)
111 return retval;
112
113 /*
114 * data structure init
115 */
116 retval = ehci_init(hcd);
117 if (retval)
118 return retval;
119
Lennert Buytenhek129bd472008-05-20 19:08:53 +0200120 hcd->has_tt = 1;
121
Tzachi Perelsteine96ffe22007-12-01 11:07:04 -0500122 ehci_port_power(ehci, 0);
123
124 return retval;
125}
126
127static 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),
131
132 /*
133 * generic hardware linkage
134 */
135 .irq = ehci_irq,
136 .flags = HCD_MEMORY | HCD_USB2,
137
138 /*
139 * basic lifecycle operations
140 */
141 .reset = ehci_orion_setup,
142 .start = ehci_run,
Tzachi Perelsteine96ffe22007-12-01 11:07:04 -0500143 .stop = ehci_stop,
144 .shutdown = ehci_shutdown,
145
146 /*
147 * managing i/o requests and associated device resources
148 */
149 .urb_enqueue = ehci_urb_enqueue,
150 .urb_dequeue = ehci_urb_dequeue,
151 .endpoint_disable = ehci_endpoint_disable,
Alan Sternb18ffd42009-05-27 18:21:56 -0400152 .endpoint_reset = ehci_endpoint_reset,
Tzachi Perelsteine96ffe22007-12-01 11:07:04 -0500153
154 /*
155 * scheduling support
156 */
157 .get_frame_number = ehci_get_frame,
158
159 /*
160 * root hub support
161 */
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,
Alan Sterna8e51772008-05-20 16:58:11 -0400166 .relinquish_port = ehci_relinquish_port,
Alan Stern3a311552008-05-20 16:58:29 -0400167 .port_handed_over = ehci_port_handed_over,
Alan Stern914b7012009-06-29 10:47:30 -0400168
169 .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
Tzachi Perelsteine96ffe22007-12-01 11:07:04 -0500170};
171
Lennert Buytenhek92aecfa2008-03-27 14:51:39 -0400172static void __init
173ehci_orion_conf_mbus_windows(struct usb_hcd *hcd,
174 struct mbus_dram_target_info *dram)
175{
176 int i;
177
178 for (i = 0; i < 4; i++) {
179 wrl(USB_WINDOW_CTRL(i), 0);
180 wrl(USB_WINDOW_BASE(i), 0);
181 }
182
183 for (i = 0; i < dram->num_cs; i++) {
184 struct mbus_dram_window *cs = dram->cs + i;
185
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);
190 }
191}
192
Uwe Kleine-Königdc2f2b72009-03-28 00:26:33 +0100193static int __devinit ehci_orion_drv_probe(struct platform_device *pdev)
Tzachi Perelsteine96ffe22007-12-01 11:07:04 -0500194{
Lennert Buytenhek92aecfa2008-03-27 14:51:39 -0400195 struct orion_ehci_data *pd = pdev->dev.platform_data;
Tzachi Perelsteine96ffe22007-12-01 11:07:04 -0500196 struct resource *res;
197 struct usb_hcd *hcd;
198 struct ehci_hcd *ehci;
199 void __iomem *regs;
200 int irq, err;
201
202 if (usb_disabled())
203 return -ENODEV;
204
205 pr_debug("Initializing Orion-SoC USB Host Controller\n");
206
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",
Kay Sievers7071a3c2008-05-02 06:02:41 +0200211 dev_name(&pdev->dev));
Tzachi Perelsteine96ffe22007-12-01 11:07:04 -0500212 err = -ENODEV;
213 goto err1;
214 }
215
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",
Kay Sievers7071a3c2008-05-02 06:02:41 +0200220 dev_name(&pdev->dev));
Tzachi Perelsteine96ffe22007-12-01 11:07:04 -0500221 err = -ENODEV;
222 goto err1;
223 }
224
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;
230 }
231
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;
237 }
238
239 hcd = usb_create_hcd(&ehci_orion_hc_driver,
Kay Sievers7071a3c2008-05-02 06:02:41 +0200240 &pdev->dev, dev_name(&pdev->dev));
Tzachi Perelsteine96ffe22007-12-01 11:07:04 -0500241 if (!hcd) {
242 err = -ENOMEM;
243 goto err3;
244 }
245
246 hcd->rsrc_start = res->start;
247 hcd->rsrc_len = res->end - res->start + 1;
248 hcd->regs = regs;
249
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);
Alan Sterna8e51772008-05-20 16:58:11 -0400255 hcd->has_tt = 1;
Tzachi Perelsteine96ffe22007-12-01 11:07:04 -0500256 ehci->sbrn = 0x20;
257
258 /*
Lennert Buytenhek92aecfa2008-03-27 14:51:39 -0400259 * (Re-)program MBUS remapping windows if we are asked to.
260 */
261 if (pd != NULL && pd->dram != NULL)
262 ehci_orion_conf_mbus_windows(hcd, pd->dram);
263
264 /*
Ronen Shitritfb6f5522008-09-17 10:08:05 +0300265 * setup Orion USB controller.
Tzachi Perelsteine96ffe22007-12-01 11:07:04 -0500266 */
Ronen Shitritfb6f5522008-09-17 10:08:05 +0300267 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");
277 }
Tzachi Perelsteine96ffe22007-12-01 11:07:04 -0500278
279 err = usb_add_hcd(hcd, irq, IRQF_SHARED | IRQF_DISABLED);
280 if (err)
281 goto err4;
282
283 return 0;
284
285err4:
286 usb_put_hcd(hcd);
287err3:
288 iounmap(regs);
289err2:
290 release_mem_region(res->start, res->end - res->start + 1);
291err1:
292 dev_err(&pdev->dev, "init %s fail, %d\n",
Kay Sievers7071a3c2008-05-02 06:02:41 +0200293 dev_name(&pdev->dev), err);
Tzachi Perelsteine96ffe22007-12-01 11:07:04 -0500294
295 return err;
296}
297
298static int __exit ehci_orion_drv_remove(struct platform_device *pdev)
299{
300 struct usb_hcd *hcd = platform_get_drvdata(pdev);
301
302 usb_remove_hcd(hcd);
303 iounmap(hcd->regs);
304 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
305 usb_put_hcd(hcd);
306
307 return 0;
308}
309
310MODULE_ALIAS("platform:orion-ehci");
311
312static 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",
317};