1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * MUSB OTG driver register I/O 4 * 5 * Copyright 2005 Mentor Graphics Corporation 6 * Copyright (C) 2005-2006 by Texas Instruments 7 * Copyright (C) 2006-2007 Nokia Corporation 8 * 9 * This program is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU General Public License 11 * version 2 as published by the Free Software Foundation. 12 */ 13 14 #ifndef __MUSB_LINUX_PLATFORM_ARCH_H__ 15 #define __MUSB_LINUX_PLATFORM_ARCH_H__ 16 17 #ifndef __UBOOT__ 18 #include <linux/io.h> 19 #else 20 #include <asm/io.h> 21 #endif 22 23 #if !defined(CONFIG_ARM) && !defined(CONFIG_SUPERH) \ 24 && !defined(CONFIG_PPC32) \ 25 && !defined(CONFIG_PPC64) && !defined(CONFIG_MIPS) \ 26 && !defined(CONFIG_M68K) 27 static inline void readsl(const void __iomem *addr, void *buf, int len) 28 { insl((unsigned long)addr, buf, len); } 29 static inline void readsw(const void __iomem *addr, void *buf, int len) 30 { insw((unsigned long)addr, buf, len); } 31 static inline void readsb(const void __iomem *addr, void *buf, int len) 32 { insb((unsigned long)addr, buf, len); } 33 34 static inline void writesl(const void __iomem *addr, const void *buf, int len) 35 { outsl((unsigned long)addr, buf, len); } 36 static inline void writesw(const void __iomem *addr, const void *buf, int len) 37 { outsw((unsigned long)addr, buf, len); } 38 static inline void writesb(const void __iomem *addr, const void *buf, int len) 39 { outsb((unsigned long)addr, buf, len); } 40 41 #endif 42 43 /* NOTE: these offsets are all in bytes */ 44 45 static inline u16 musb_readw(const void __iomem *addr, unsigned offset) 46 { return __raw_readw(addr + offset); } 47 48 static inline u32 musb_readl(const void __iomem *addr, unsigned offset) 49 { return __raw_readl(addr + offset); } 50 51 52 static inline void musb_writew(void __iomem *addr, unsigned offset, u16 data) 53 { __raw_writew(data, addr + offset); } 54 55 static inline void musb_writel(void __iomem *addr, unsigned offset, u32 data) 56 { __raw_writel(data, addr + offset); } 57 58 59 #if defined(CONFIG_USB_MUSB_TUSB6010) || defined (CONFIG_USB_MUSB_TUSB6010_MODULE) 60 61 /* 62 * TUSB6010 doesn't allow 8-bit access; 16-bit access is the minimum. 63 */ 64 static inline u8 musb_readb(const void __iomem *addr, unsigned offset) 65 { 66 u16 tmp; 67 u8 val; 68 69 tmp = __raw_readw(addr + (offset & ~1)); 70 if (offset & 1) 71 val = (tmp >> 8); 72 else 73 val = tmp & 0xff; 74 75 return val; 76 } 77 78 static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data) 79 { 80 u16 tmp; 81 82 tmp = __raw_readw(addr + (offset & ~1)); 83 if (offset & 1) 84 tmp = (data << 8) | (tmp & 0xff); 85 else 86 tmp = (tmp & 0xff00) | data; 87 88 __raw_writew(tmp, addr + (offset & ~1)); 89 } 90 91 #else 92 93 static inline u8 musb_readb(const void __iomem *addr, unsigned offset) 94 { return __raw_readb(addr + offset); } 95 96 static inline void musb_writeb(void __iomem *addr, unsigned offset, u8 data) 97 { __raw_writeb(data, addr + offset); } 98 99 #endif /* CONFIG_USB_MUSB_TUSB6010 */ 100 101 #endif 102