From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greentime Hu Subject: [PATCH v6 27/36] nds32: Miscellaneous header files Date: Mon, 15 Jan 2018 13:53:35 +0800 Message-ID: <38d9dce03a1421378a94d3d528bb0c4741e2bf7b.1515766253.git.green.hu@gmail.com> References: Return-path: In-Reply-To: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org To: greentime@andestech.com, linux-kernel@vger.kernel.org, arnd@arndb.de, linux-arch@vger.kernel.org, tglx@linutronix.de, jason@lakedaemon.net, marc.zyngier@arm.com, robh+dt@kernel.org, netdev@vger.kernel.org, deanbo422@gmail.com, devicetree@vger.kernel.org, viro@zeniv.linux.org.uk, dhowells@redhat.com, will.deacon@arm.com, daniel.lezcano@linaro.org, linux-serial@vger.kernel.org, geert.uytterhoeven@gmail.com, linus.walleij@linaro.org, mark.rutland@arm.com, greg@kroah.com, ren_guo@c-sky.com, rdunlap@infradead.org, davem@davemloft.net, jonas@southpole.se, stefan.kristiansson@saunalahti.fi, shorne@gmail.com Cc: green.hu@gmail.com, Vincent Chen List-Id: devicetree@vger.kernel.org From: Greentime Hu This patch introduces some miscellaneous header files. Signed-off-by: Vincent Chen Signed-off-by: Greentime Hu --- arch/nds32/include/asm/delay.h | 39 +++++++++++++++++++++++++++++++ arch/nds32/include/asm/linkage.h | 11 +++++++++ arch/nds32/include/uapi/asm/byteorder.h | 13 +++++++++++ 3 files changed, 63 insertions(+) create mode 100644 arch/nds32/include/asm/delay.h create mode 100644 arch/nds32/include/asm/linkage.h create mode 100644 arch/nds32/include/uapi/asm/byteorder.h diff --git a/arch/nds32/include/asm/delay.h b/arch/nds32/include/asm/delay.h new file mode 100644 index 0000000..519ba97 --- /dev/null +++ b/arch/nds32/include/asm/delay.h @@ -0,0 +1,39 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2005-2017 Andes Technology Corporation + +#ifndef __NDS32_DELAY_H__ +#define __NDS32_DELAY_H__ + +#include + +/* There is no clocksource cycle counter in the CPU. */ +static inline void __delay(unsigned long loops) +{ + __asm__ __volatile__(".align 2\n" + "1:\n" + "\taddi\t%0, %0, -1\n" + "\tbgtz\t%0, 1b\n" + :"=r"(loops) + :"0"(loops)); +} + +static inline void __udelay(unsigned long usecs, unsigned long lpj) +{ + usecs *= (unsigned long)(((0x8000000000000000ULL / (500000 / HZ)) + + 0x80000000ULL) >> 32); + usecs = (unsigned long)(((unsigned long long)usecs * lpj) >> 32); + __delay(usecs); +} + +#define udelay(usecs) __udelay((usecs), loops_per_jiffy) + +/* make sure "usecs *= ..." in udelay do not overflow. */ +#if HZ >= 1000 +#define MAX_UDELAY_MS 1 +#elif HZ <= 200 +#define MAX_UDELAY_MS 5 +#else +#define MAX_UDELAY_MS (1000 / HZ) +#endif + +#endif diff --git a/arch/nds32/include/asm/linkage.h b/arch/nds32/include/asm/linkage.h new file mode 100644 index 0000000..e708c8b --- /dev/null +++ b/arch/nds32/include/asm/linkage.h @@ -0,0 +1,11 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2005-2017 Andes Technology Corporation + +#ifndef __ASM_LINKAGE_H +#define __ASM_LINKAGE_H + +/* This file is required by include/linux/linkage.h */ +#define __ALIGN .align 2 +#define __ALIGN_STR ".align 2" + +#endif diff --git a/arch/nds32/include/uapi/asm/byteorder.h b/arch/nds32/include/uapi/asm/byteorder.h new file mode 100644 index 0000000..a23f6f3a --- /dev/null +++ b/arch/nds32/include/uapi/asm/byteorder.h @@ -0,0 +1,13 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2005-2017 Andes Technology Corporation + +#ifndef __NDS32_BYTEORDER_H__ +#define __NDS32_BYTEORDER_H__ + +#ifdef __NDS32_EB__ +#include +#else +#include +#endif + +#endif /* __NDS32_BYTEORDER_H__ */ -- 1.7.9.5