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) 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 /* NOTE: these offsets are all in bytes */ 60 61 static inline u16 musb_readw(const void __iomem *addr, unsigned offset) 62 { return __raw_readw(addr + offset); } 63 64 static inline u32 musb_readl(const void __iomem *addr, unsigned offset) 65 { return __raw_readl(addr + offset); } 66 67 68 static inline void musb_writew(void __iomem *addr, unsigned offset, u16 data) 69 { __raw_writew(data, addr + offset); } 70 71 static inline void musb_writel(void __iomem *addr, unsigned offset, u32 data) 72 { __raw_writel(data, addr + offset); } 73 74 75 #ifdef CONFIG_USB_TUSB6010 76 77 /* 78 * TUSB6010 doesn't allow 8-bit access; 16-bit access is the minimum. 79 */ 80 static inline u8 musb_readb(const void __iomem *addr, unsigned offset) 81 { 82 u16 tmp; 83 u8 val; 84 85 tmp = __raw_readw(addr + (offset & ~1)); 86 if (offset & 1) 87 val = (tmp >> 8); 88 else 89 val = tmp & 0xff; 90 91 return val; 92 } 93 94 static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data) 95 { 96 u16 tmp; 97 98 tmp = __raw_readw(addr + (offset & ~1)); 99 if (offset & 1) 100 tmp = (data << 8) | (tmp & 0xff); 101 else 102 tmp = (tmp & 0xff00) | data; 103 104 __raw_writew(tmp, addr + (offset & ~1)); 105 } 106 107 #else 108 109 static inline u8 musb_readb(const void __iomem *addr, unsigned offset) 110 { return __raw_readb(addr + offset); } 111 112 static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data) 113 { __raw_writeb(data, addr + offset); } 114 115 #endif /* CONFIG_USB_TUSB6010 */ 116 117 #endif 118