2 * SCC (Super Companion Chip) UHC setup
4 * (C) Copyright 2006-2007 TOSHIBA CORPORATION
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21 #include <linux/kernel.h>
22 #include <linux/pci.h>
24 #include <asm/delay.h>
26 #include <asm/machdep.h>
30 #define UHC_RESET_WAIT_MAX 10000
32 static inline int uhc_clkctrl_ready(u32 val
)
34 const u32 mask
= SCC_UHC_USBCEN
| SCC_UHC_USBCEN
;
35 return((val
& mask
) == mask
);
39 * UHC(usb host controller) enable function.
40 * affect to both of OHCI and EHCI core module.
42 static void enable_scc_uhc(struct pci_dev
*dev
)
44 void __iomem
*uhc_base
;
45 u32 __iomem
*uhc_clkctrl
;
46 u32 __iomem
*uhc_ecmode
;
50 if (!machine_is(celleb_beat
) &&
51 !machine_is(celleb_native
))
54 uhc_base
= ioremap(pci_resource_start(dev
, 0),
55 pci_resource_len(dev
, 0));
57 printk(KERN_ERR
"failed to map UHC register base.\n");
60 uhc_clkctrl
= uhc_base
+ SCC_UHC_CKRCTRL
;
61 uhc_ecmode
= uhc_base
+ SCC_UHC_ECMODE
;
63 /* setup for normal mode */
64 val
|= SCC_UHC_F48MCKLEN
;
65 out_be32(uhc_clkctrl
, val
);
66 val
|= SCC_UHC_PHY_SUSPEND_SEL
;
67 out_be32(uhc_clkctrl
, val
);
70 out_be32(uhc_clkctrl
, val
);
74 val
|= SCC_UHC_HCLKEN
;
75 out_be32(uhc_clkctrl
, val
);
76 val
|= (SCC_UHC_USBCEN
| SCC_UHC_USBEN
);
77 out_be32(uhc_clkctrl
, val
);
79 while (!uhc_clkctrl_ready(in_be32(uhc_clkctrl
))) {
81 if (i
++ > UHC_RESET_WAIT_MAX
) {
82 printk(KERN_ERR
"Failed to disable UHC reset %x\n",
83 in_be32(uhc_clkctrl
));
88 /* Endian Conversion Mode for Master ALL area */
89 out_be32(uhc_ecmode
, SCC_UHC_ECMODE_BY_BYTE
);
94 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA_2
,
95 PCI_DEVICE_ID_TOSHIBA_SCC_USB
, enable_scc_uhc
);