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/plat-orion/ehci-orion.h>
17 #define rdl(off) __raw_readl(hcd->regs + (off))
18 #define wrl(off, val) __raw_writel((val), hcd->regs + (off))
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))
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_setup(struct usb_hcd
*hcd
)
39 * Clear interrupt cause and mask
47 wrl(USB_CMD
, rdl(USB_CMD
) | 0x2);
48 while (rdl(USB_CMD
) & 0x2);
51 * GL# USB-10: Set IPG for non start of frame packets
54 wrl(USB_IPG
, (rdl(USB_IPG
) & ~0x7f00) | 0xc00);
57 * GL# USB-9: USB 2.0 Power Control
60 wrl(USB_PHY_PWR_CTRL
, (rdl(USB_PHY_PWR_CTRL
) & ~0xc0)| 0x40);
63 * GL# USB-1: USB PHY Tx Control - force calibration to '8'
64 * TXDATA_BLOCK_EN[21]=0x1, EXT_RCAL_EN[13]=0x1, IMP_CAL[6:3]=0x8
66 wrl(USB_PHY_TX_CTRL
, (rdl(USB_PHY_TX_CTRL
) & ~0x78) | 0x202040);
69 * GL# USB-3 GL# USB-9: USB PHY Rx Control
70 * RXDATA_BLOCK_LENGHT[31:30]=0x3, EDGE_DET_SEL[27:26]=0,
71 * CDR_FASTLOCK_EN[21]=0, DISCON_THRESHOLD[9:8]=0, SQ_THRESH[7:4]=0x1
73 wrl(USB_PHY_RX_CTRL
, (rdl(USB_PHY_RX_CTRL
) & ~0xc2003f0) | 0xc0000010);
76 * GL# USB-3 GL# USB-9: USB PHY IVREF Control
77 * PLLVDD12[1:0]=0x2, RXVDD[5:4]=0x3, Reserved[19]=0
79 wrl(USB_PHY_IVREF_CTRL
, (rdl(USB_PHY_IVREF_CTRL
) & ~0x80003 ) | 0x32);
82 * GL# USB-3 GL# USB-9: USB PHY Test Group Control
83 * REG_FIFO_SQ_RST[15]=0
85 wrl(USB_PHY_TST_GRP_CTRL
, rdl(USB_PHY_TST_GRP_CTRL
) & ~0x8000);
88 * Stop and reset controller
90 wrl(USB_CMD
, rdl(USB_CMD
) & ~0x1);
91 wrl(USB_CMD
, rdl(USB_CMD
) | 0x2);
92 while (rdl(USB_CMD
) & 0x2);
95 * GL# USB-5 Streaming disable REG_USB_MODE[4]=1
96 * TBD: This need to be done after each reset!
97 * GL# USB-4 Setup USB Host mode
102 static int ehci_orion_setup(struct usb_hcd
*hcd
)
104 struct ehci_hcd
*ehci
= hcd_to_ehci(hcd
);
107 retval
= ehci_halt(ehci
);
112 * data structure init
114 retval
= ehci_init(hcd
);
121 ehci_port_power(ehci
, 0);
126 static const struct hc_driver ehci_orion_hc_driver
= {
127 .description
= hcd_name
,
128 .product_desc
= "Marvell Orion EHCI",
129 .hcd_priv_size
= sizeof(struct ehci_hcd
),
132 * generic hardware linkage
135 .flags
= HCD_MEMORY
| HCD_USB2
,
138 * basic lifecycle operations
140 .reset
= ehci_orion_setup
,
143 .shutdown
= ehci_shutdown
,
146 * managing i/o requests and associated device resources
148 .urb_enqueue
= ehci_urb_enqueue
,
149 .urb_dequeue
= ehci_urb_dequeue
,
150 .endpoint_disable
= ehci_endpoint_disable
,
155 .get_frame_number
= ehci_get_frame
,
160 .hub_status_data
= ehci_hub_status_data
,
161 .hub_control
= ehci_hub_control
,
162 .bus_suspend
= ehci_bus_suspend
,
163 .bus_resume
= ehci_bus_resume
,
164 .relinquish_port
= ehci_relinquish_port
,
165 .port_handed_over
= ehci_port_handed_over
,
169 ehci_orion_conf_mbus_windows(struct usb_hcd
*hcd
,
170 struct mbus_dram_target_info
*dram
)
174 for (i
= 0; i
< 4; i
++) {
175 wrl(USB_WINDOW_CTRL(i
), 0);
176 wrl(USB_WINDOW_BASE(i
), 0);
179 for (i
= 0; i
< dram
->num_cs
; i
++) {
180 struct mbus_dram_window
*cs
= dram
->cs
+ i
;
182 wrl(USB_WINDOW_CTRL(i
), ((cs
->size
- 1) & 0xffff0000) |
183 (cs
->mbus_attr
<< 8) |
184 (dram
->mbus_dram_target_id
<< 4) | 1);
185 wrl(USB_WINDOW_BASE(i
), cs
->base
);
189 static int __init
ehci_orion_drv_probe(struct platform_device
*pdev
)
191 struct orion_ehci_data
*pd
= pdev
->dev
.platform_data
;
192 struct resource
*res
;
194 struct ehci_hcd
*ehci
;
201 pr_debug("Initializing Orion-SoC USB Host Controller\n");
203 irq
= platform_get_irq(pdev
, 0);
206 "Found HC with no IRQ. Check %s setup!\n",
212 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
215 "Found HC with no register addr. Check %s setup!\n",
221 if (!request_mem_region(res
->start
, res
->end
- res
->start
+ 1,
222 ehci_orion_hc_driver
.description
)) {
223 dev_dbg(&pdev
->dev
, "controller already in use\n");
228 regs
= ioremap(res
->start
, res
->end
- res
->start
+ 1);
230 dev_dbg(&pdev
->dev
, "error mapping memory\n");
235 hcd
= usb_create_hcd(&ehci_orion_hc_driver
,
236 &pdev
->dev
, pdev
->dev
.bus_id
);
242 hcd
->rsrc_start
= res
->start
;
243 hcd
->rsrc_len
= res
->end
- res
->start
+ 1;
246 ehci
= hcd_to_ehci(hcd
);
247 ehci
->caps
= hcd
->regs
+ 0x100;
248 ehci
->regs
= hcd
->regs
+ 0x100 +
249 HC_LENGTH(ehci_readl(ehci
, &ehci
->caps
->hc_capbase
));
250 ehci
->hcs_params
= ehci_readl(ehci
, &ehci
->caps
->hcs_params
);
255 * (Re-)program MBUS remapping windows if we are asked to.
257 if (pd
!= NULL
&& pd
->dram
!= NULL
)
258 ehci_orion_conf_mbus_windows(hcd
, pd
->dram
);
261 * setup Orion USB controller
263 orion_usb_setup(hcd
);
265 err
= usb_add_hcd(hcd
, irq
, IRQF_SHARED
| IRQF_DISABLED
);
276 release_mem_region(res
->start
, res
->end
- res
->start
+ 1);
278 dev_err(&pdev
->dev
, "init %s fail, %d\n",
279 pdev
->dev
.bus_id
, err
);
284 static int __exit
ehci_orion_drv_remove(struct platform_device
*pdev
)
286 struct usb_hcd
*hcd
= platform_get_drvdata(pdev
);
290 release_mem_region(hcd
->rsrc_start
, hcd
->rsrc_len
);
296 MODULE_ALIAS("platform:orion-ehci");
298 static struct platform_driver ehci_orion_driver
= {
299 .probe
= ehci_orion_drv_probe
,
300 .remove
= __exit_p(ehci_orion_drv_remove
),
301 .shutdown
= usb_hcd_platform_shutdown
,
302 .driver
.name
= "orion-ehci",