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",