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.
11 #include <linux/kernel.h>
12 #include <linux/module.h>
13 #include <linux/platform_device.h>
14 #include <linux/mbus.h>
15 #include <asm/arch/orion.h>
16 #include <asm/arch/platform.h>
18 #define rdl(off) __raw_readl(hcd->regs + (off))
19 #define wrl(off, val) __raw_writel((val), hcd->regs + (off))
22 #define USB_MODE 0x1a8
23 #define USB_CAUSE 0x310
24 #define USB_MASK 0x314
25 #define USB_WINDOW_CTRL(i) (0x320 + ((i) << 4))
26 #define USB_WINDOW_BASE(i) (0x324 + ((i) << 4))
28 #define USB_PHY_PWR_CTRL 0x400
29 #define USB_PHY_TX_CTRL 0x420
30 #define USB_PHY_RX_CTRL 0x430
31 #define USB_PHY_IVREF_CTRL 0x440
32 #define USB_PHY_TST_GRP_CTRL 0x450
35 * Implement Orion USB controller specification guidelines
37 static void orion_usb_setup(struct usb_hcd *hcd)
40 * Clear interrupt cause and mask
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
55 wrl(USB_IPG, (rdl(USB_IPG) & ~0x7f00) | 0xc00);
58 * GL# USB-9: USB 2.0 Power Control
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
103 static int ehci_orion_setup(struct usb_hcd *hcd)
105 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
108 retval = ehci_halt(ehci);
113 * data structure init
115 retval = ehci_init(hcd);
120 ehci_port_power(ehci, 0);
125 static const struct hc_driver ehci_orion_hc_driver = {
126 .description = hcd_name,
127 .product_desc = "Marvell Orion EHCI",
128 .hcd_priv_size = sizeof(struct ehci_hcd),
131 * generic hardware linkage
134 .flags = HCD_MEMORY | HCD_USB2,
137 * basic lifecycle operations
139 .reset = ehci_orion_setup,
142 .suspend = ehci_bus_suspend,
143 .resume = ehci_bus_resume,
146 .shutdown = ehci_shutdown,
149 * managing i/o requests and associated device resources
151 .urb_enqueue = ehci_urb_enqueue,
152 .urb_dequeue = ehci_urb_dequeue,
153 .endpoint_disable = ehci_endpoint_disable,
158 .get_frame_number = ehci_get_frame,
163 .hub_status_data = ehci_hub_status_data,
164 .hub_control = ehci_hub_control,
165 .bus_suspend = ehci_bus_suspend,
166 .bus_resume = ehci_bus_resume,
170 ehci_orion_conf_mbus_windows(struct usb_hcd *hcd,
171 struct mbus_dram_target_info *dram)
175 for (i = 0; i < 4; i++) {
176 wrl(USB_WINDOW_CTRL(i), 0);
177 wrl(USB_WINDOW_BASE(i), 0);
180 for (i = 0; i < dram->num_cs; i++) {
181 struct mbus_dram_window *cs = dram->cs + i;
183 wrl(USB_WINDOW_CTRL(i), ((cs->size - 1) & 0xffff0000) |
184 (cs->mbus_attr << 8) |
185 (dram->mbus_dram_target_id << 4) | 1);
186 wrl(USB_WINDOW_BASE(i), cs->base);
190 static int __init ehci_orion_drv_probe(struct platform_device *pdev)
192 struct orion_ehci_data *pd = pdev->dev.platform_data;
193 struct resource *res;
195 struct ehci_hcd *ehci;
202 pr_debug("Initializing Orion-SoC USB Host Controller\n");
204 irq = platform_get_irq(pdev, 0);
207 "Found HC with no IRQ. Check %s setup!\n",
213 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
216 "Found HC with no register addr. Check %s setup!\n",
222 if (!request_mem_region(res->start, res->end - res->start + 1,
223 ehci_orion_hc_driver.description)) {
224 dev_dbg(&pdev->dev, "controller already in use\n");
229 regs = ioremap(res->start, res->end - res->start + 1);
231 dev_dbg(&pdev->dev, "error mapping memory\n");
236 hcd = usb_create_hcd(&ehci_orion_hc_driver,
237 &pdev->dev, pdev->dev.bus_id);
243 hcd->rsrc_start = res->start;
244 hcd->rsrc_len = res->end - res->start + 1;
247 ehci = hcd_to_ehci(hcd);
248 ehci->caps = hcd->regs + 0x100;
249 ehci->regs = hcd->regs + 0x100 +
250 HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
251 ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
252 ehci->is_tdi_rh_tt = 1;
256 * (Re-)program MBUS remapping windows if we are asked to.
258 if (pd != NULL && pd->dram != NULL)
259 ehci_orion_conf_mbus_windows(hcd, pd->dram);
262 * setup Orion USB controller
264 orion_usb_setup(hcd);
266 err = usb_add_hcd(hcd, irq, IRQF_SHARED | IRQF_DISABLED);
277 release_mem_region(res->start, res->end - res->start + 1);
279 dev_err(&pdev->dev, "init %s fail, %d\n",
280 pdev->dev.bus_id, err);
285 static int __exit ehci_orion_drv_remove(struct platform_device *pdev)
287 struct usb_hcd *hcd = platform_get_drvdata(pdev);
291 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
297 MODULE_ALIAS("platform:orion-ehci");
299 static struct platform_driver ehci_orion_driver = {
300 .probe = ehci_orion_drv_probe,
301 .remove = __exit_p(ehci_orion_drv_remove),
302 .shutdown = usb_hcd_platform_shutdown,
303 .driver.name = "orion-ehci",