1/*
2 * MUSB OTG driver register I/O
3 *
4 * Copyright 2005 Mentor Graphics Corporation
5 * Copyright (C) 2005-2006 by Texas Instruments
6 * Copyright (C) 2006-2007 Nokia Corporation
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * version 2 as published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA
21 *
22 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
25 * NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
28 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
29 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 *
33 */
34
35#ifndef __MUSB_LINUX_PLATFORM_ARCH_H__
36#define __MUSB_LINUX_PLATFORM_ARCH_H__
37
38#include <linux/io.h>
39
40#if !defined(CONFIG_ARM) && !defined(CONFIG_SUPERH) \
41	&& !defined(CONFIG_AVR32) && !defined(CONFIG_PPC32) \
42	&& !defined(CONFIG_PPC64) && !defined(CONFIG_BLACKFIN) \
43	&& !defined(CONFIG_MIPS)
44static inline void readsl(const void __iomem *addr, void *buf, int len)
45	{ insl((unsigned long)addr, buf, len); }
46static inline void readsw(const void __iomem *addr, void *buf, int len)
47	{ insw((unsigned long)addr, buf, len); }
48static inline void readsb(const void __iomem *addr, void *buf, int len)
49	{ insb((unsigned long)addr, buf, len); }
50
51static inline void writesl(const void __iomem *addr, const void *buf, int len)
52	{ outsl((unsigned long)addr, buf, len); }
53static inline void writesw(const void __iomem *addr, const void *buf, int len)
54	{ outsw((unsigned long)addr, buf, len); }
55static inline void writesb(const void __iomem *addr, const void *buf, int len)
56	{ outsb((unsigned long)addr, buf, len); }
57
58#endif
59
60#ifndef CONFIG_BLACKFIN
61
62/* NOTE:  these offsets are all in bytes */
63
64static inline u16 musb_readw(const void __iomem *addr, unsigned offset)
65	{ return __raw_readw(addr + offset); }
66
67static inline u32 musb_readl(const void __iomem *addr, unsigned offset)
68	{ return __raw_readl(addr + offset); }
69
70
71static inline void musb_writew(void __iomem *addr, unsigned offset, u16 data)
72	{ __raw_writew(data, addr + offset); }
73
74static inline void musb_writel(void __iomem *addr, unsigned offset, u32 data)
75	{ __raw_writel(data, addr + offset); }
76
77
78#if defined(CONFIG_USB_MUSB_TUSB6010) || defined (CONFIG_USB_MUSB_TUSB6010_MODULE)
79
80/*
81 * TUSB6010 doesn't allow 8-bit access; 16-bit access is the minimum.
82 */
83static inline u8 musb_readb(const void __iomem *addr, unsigned offset)
84{
85	u16 tmp;
86	u8 val;
87
88	tmp = __raw_readw(addr + (offset & ~1));
89	if (offset & 1)
90		val = (tmp >> 8);
91	else
92		val = tmp & 0xff;
93
94	return val;
95}
96
97static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data)
98{
99	u16 tmp;
100
101	tmp = __raw_readw(addr + (offset & ~1));
102	if (offset & 1)
103		tmp = (data << 8) | (tmp & 0xff);
104	else
105		tmp = (tmp & 0xff00) | data;
106
107	__raw_writew(tmp, addr + (offset & ~1));
108}
109
110#else
111
112static inline u8 musb_readb(const void __iomem *addr, unsigned offset)
113	{ return __raw_readb(addr + offset); }
114
115static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data)
116	{ __raw_writeb(data, addr + offset); }
117
118#endif	/* CONFIG_USB_MUSB_TUSB6010 */
119
120#else
121
122static inline u8 musb_readb(const void __iomem *addr, unsigned offset)
123	{ return (u8) (bfin_read16(addr + offset)); }
124
125static inline u16 musb_readw(const void __iomem *addr, unsigned offset)
126	{ return bfin_read16(addr + offset); }
127
128static inline u32 musb_readl(const void __iomem *addr, unsigned offset)
129	{ return (u32) (bfin_read16(addr + offset)); }
130
131static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data)
132	{ bfin_write16(addr + offset, (u16) data); }
133
134static inline void musb_writew(void __iomem *addr, unsigned offset, u16 data)
135	{ bfin_write16(addr + offset, data); }
136
137static inline void musb_writel(void __iomem *addr, unsigned offset, u32 data)
138	{ bfin_write16(addr + offset, (u16) data); }
139
140#endif /* CONFIG_BLACKFIN */
141
142#endif
143