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 static inline void readsl(const void __iomem *addr, void *buf, int len)
44 { insl((unsigned long)addr, buf, len); }
45 static inline void readsw(const void __iomem *addr, void *buf, int len)
46 { insw((unsigned long)addr, buf, len); }
47 static inline void readsb(const void __iomem *addr, void *buf, int len)
48 { insb((unsigned long)addr, buf, len); }
49
50 static inline void writesl(const void __iomem *addr, const void *buf, int len)
51 { outsl((unsigned long)addr, buf, len); }
52 static inline void writesw(const void __iomem *addr, const void *buf, int len)
53 { outsw((unsigned long)addr, buf, len); }
54 static inline void writesb(const void __iomem *addr, const void *buf, int len)
55 { outsb((unsigned long)addr, buf, len); }
56
57 #endif
58
59 #ifndef CONFIG_BLACKFIN
60
61 /* NOTE: these offsets are all in bytes */
62
63 static inline u16 musb_readw(const void __iomem *addr, unsigned offset)
64 { return __raw_readw(addr + offset); }
65
66 static inline u32 musb_readl(const void __iomem *addr, unsigned offset)
67 { return __raw_readl(addr + offset); }
68
69
70 static inline void musb_writew(void __iomem *addr, unsigned offset, u16 data)
71 { __raw_writew(data, addr + offset); }
72
73 static inline void musb_writel(void __iomem *addr, unsigned offset, u32 data)
74 { __raw_writel(data, addr + offset); }
75
76
77 #ifdef CONFIG_USB_TUSB6010
78
79 /*
80 * TUSB6010 doesn't allow 8-bit access; 16-bit access is the minimum.
81 */
82 static inline u8 musb_readb(const void __iomem *addr, unsigned offset)
83 {
84 u16 tmp;
85 u8 val;
86
87 tmp = __raw_readw(addr + (offset & ~1));
88 if (offset & 1)
89 val = (tmp >> 8);
90 else
91 val = tmp & 0xff;
92
93 return val;
94 }
95
96 static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data)
97 {
98 u16 tmp;
99
100 tmp = __raw_readw(addr + (offset & ~1));
101 if (offset & 1)
102 tmp = (data << 8) | (tmp & 0xff);
103 else
104 tmp = (tmp & 0xff00) | data;
105
106 __raw_writew(tmp, addr + (offset & ~1));
107 }
108
109 #else
110
111 static inline u8 musb_readb(const void __iomem *addr, unsigned offset)
112 { return __raw_readb(addr + offset); }
113
114 static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data)
115 { __raw_writeb(data, addr + offset); }
116
117 #endif /* CONFIG_USB_TUSB6010 */
118
119 #else
120
121 static inline u8 musb_readb(const void __iomem *addr, unsigned offset)
122 { return (u8) (bfin_read16(addr + offset)); }
123
124 static inline u16 musb_readw(const void __iomem *addr, unsigned offset)
125 { return bfin_read16(addr + offset); }
126
127 static inline u32 musb_readl(const void __iomem *addr, unsigned offset)
128 { return (u32) (bfin_read16(addr + offset)); }
129
130 static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data)
131 { bfin_write16(addr + offset, (u16) data); }
132
133 static inline void musb_writew(void __iomem *addr, unsigned offset, u16 data)
134 { bfin_write16(addr + offset, data); }
135
136 static inline void musb_writel(void __iomem *addr, unsigned offset, u32 data)
137 { bfin_write16(addr + offset, (u16) data); }
138
139 #endif /* CONFIG_BLACKFIN */
140
141 #endif
142
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