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 #ifndef CONFIG_BLACKFIN 41 42 /* NOTE: these offsets are all in bytes */ 43 44 static inline u16 musb_readw(const void __iomem *addr, unsigned offset) 45 { return __raw_readw(addr + offset); } 46 47 static inline u32 musb_readl(const void __iomem *addr, unsigned offset) 48 { return __raw_readl(addr + offset); } 49 50 51 static inline void musb_writew(void __iomem *addr, unsigned offset, u16 data) 52 { __raw_writew(data, addr + offset); } 53 54 static inline void musb_writel(void __iomem *addr, unsigned offset, u32 data) 55 { __raw_writel(data, addr + offset); } 56 57 58 #if defined(CONFIG_USB_MUSB_TUSB6010) || defined (CONFIG_USB_MUSB_TUSB6010_MODULE) 59 60 /* 61 * TUSB6010 doesn't allow 8-bit access; 16-bit access is the minimum. 62 */ 63 static inline u8 musb_readb(const void __iomem *addr, unsigned offset) 64 { 65 u16 tmp; 66 u8 val; 67 68 tmp = __raw_readw(addr + (offset & ~1)); 69 if (offset & 1) 70 val = (tmp >> 8); 71 else 72 val = tmp & 0xff; 73 74 return val; 75 } 76 77 static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data) 78 { 79 u16 tmp; 80 81 tmp = __raw_readw(addr + (offset & ~1)); 82 if (offset & 1) 83 tmp = (data << 8) | (tmp & 0xff); 84 else 85 tmp = (tmp & 0xff00) | data; 86 87 __raw_writew(tmp, addr + (offset & ~1)); 88 } 89 90 #else 91 92 static inline u8 musb_readb(const void __iomem *addr, unsigned offset) 93 { return __raw_readb(addr + offset); } 94 95 static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data) 96 { __raw_writeb(data, addr + offset); } 97 98 #endif /* CONFIG_USB_MUSB_TUSB6010 */ 99 100 #else 101 102 static inline u8 musb_readb(const void __iomem *addr, unsigned offset) 103 { return (u8) (bfin_read16(addr + offset)); } 104 105 static inline u16 musb_readw(const void __iomem *addr, unsigned offset) 106 { return bfin_read16(addr + offset); } 107 108 static inline u32 musb_readl(const void __iomem *addr, unsigned offset) 109 { return (u32) (bfin_read16(addr + offset)); } 110 111 static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data) 112 { bfin_write16(addr + offset, (u16) data); } 113 114 static inline void musb_writew(void __iomem *addr, unsigned offset, u16 data) 115 { bfin_write16(addr + offset, data); } 116 117 static inline void musb_writel(void __iomem *addr, unsigned offset, u32 data) 118 { bfin_write16(addr + offset, (u16) data); } 119 120 #endif /* CONFIG_BLACKFIN */ 121 122 #endif 123