linux-kernel - [PATCH 42/46] ARM: pxa: remove unused mach/bitfield.h

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Message-Id: <20191018154201.1276638-42-arnd@arndb.de>
Date:   Fri, 18 Oct 2019 17:41:57 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Daniel Mack <daniel@...que.org>,
        Haojian Zhuang <haojian.zhuang@...il.com>,
        Robert Jarzmik <robert.jarzmik@...e.fr>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Linus Walleij <linus.walleij@...aro.org>,
        Arnd Bergmann <arnd@...db.de>
Subject: [PATCH 42/46] ARM: pxa: remove unused mach/bitfield.h

The sa1111.h header defines some constants using the bitfield
macros, but those are only used on sa1100, not on pxa, and the
users include the bitfield header through mach/hardware.h.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 arch/arm/include/asm/hardware/sa1111.h    |   2 -
 arch/arm/mach-pxa/include/mach/bitfield.h | 114 ----------------------
 2 files changed, 116 deletions(-)
 delete mode 100644 arch/arm/mach-pxa/include/mach/bitfield.h

diff --git a/arch/arm/include/asm/hardware/sa1111.h b/arch/arm/include/asm/hardware/sa1111.h
index d134b9a5ff94..dc8850238e2b 100644
--- a/arch/arm/include/asm/hardware/sa1111.h
+++ b/arch/arm/include/asm/hardware/sa1111.h
@@ -13,8 +13,6 @@
 #ifndef _ASM_ARCH_SA1111
 #define _ASM_ARCH_SA1111
 
-#include <mach/bitfield.h>
-
 /*
  * Don't ask the (SAC) DMA engines to move less than this amount.
  */
diff --git a/arch/arm/mach-pxa/include/mach/bitfield.h b/arch/arm/mach-pxa/include/mach/bitfield.h
deleted file mode 100644
index fe2ca441bc0a..000000000000
--- a/arch/arm/mach-pxa/include/mach/bitfield.h
+++ /dev/null
@@ -1,114 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- *	FILE    	bitfield.h
- *
- *	Version 	1.1
- *	Author  	Copyright (c) Marc A. Viredaz, 1998
- *	        	DEC Western Research Laboratory, Palo Alto, CA
- *	Date    	April 1998 (April 1997)
- *	System  	Advanced RISC Machine (ARM)
- *	Language	C or ARM Assembly
- *	Purpose 	Definition of macros to operate on bit fields.
- */
-
-
-
-#ifndef __BITFIELD_H
-#define __BITFIELD_H
-
-#ifndef __ASSEMBLY__
-#define UData(Data)	((unsigned long) (Data))
-#else
-#define UData(Data)	(Data)
-#endif
-
-
-/*
- * MACRO: Fld
- *
- * Purpose
- *    The macro "Fld" encodes a bit field, given its size and its shift value
- *    with respect to bit 0.
- *
- * Note
- *    A more intuitive way to encode bit fields would have been to use their
- *    mask. However, extracting size and shift value information from a bit
- *    field's mask is cumbersome and might break the assembler (255-character
- *    line-size limit).
- *
- * Input
- *    Size      	Size of the bit field, in number of bits.
- *    Shft      	Shift value of the bit field with respect to bit 0.
- *
- * Output
- *    Fld       	Encoded bit field.
- */
-
-#define Fld(Size, Shft)	(((Size) << 16) + (Shft))
-
-
-/*
- * MACROS: FSize, FShft, FMsk, FAlnMsk, F1stBit
- *
- * Purpose
- *    The macros "FSize", "FShft", "FMsk", "FAlnMsk", and "F1stBit" return
- *    the size, shift value, mask, aligned mask, and first bit of a
- *    bit field.
- *
- * Input
- *    Field     	Encoded bit field (using the macro "Fld").
- *
- * Output
- *    FSize     	Size of the bit field, in number of bits.
- *    FShft     	Shift value of the bit field with respect to bit 0.
- *    FMsk      	Mask for the bit field.
- *    FAlnMsk   	Mask for the bit field, aligned on bit 0.
- *    F1stBit   	First bit of the bit field.
- */
-
-#define FSize(Field)	((Field) >> 16)
-#define FShft(Field)	((Field) & 0x0000FFFF)
-#define FMsk(Field)	(((UData (1) << FSize (Field)) - 1) << FShft (Field))
-#define FAlnMsk(Field)	((UData (1) << FSize (Field)) - 1)
-#define F1stBit(Field)	(UData (1) << FShft (Field))
-
-
-/*
- * MACRO: FInsrt
- *
- * Purpose
- *    The macro "FInsrt" inserts a value into a bit field by shifting the
- *    former appropriately.
- *
- * Input
- *    Value     	Bit-field value.
- *    Field     	Encoded bit field (using the macro "Fld").
- *
- * Output
- *    FInsrt    	Bit-field value positioned appropriately.
- */
-
-#define FInsrt(Value, Field) \
-                	(UData (Value) << FShft (Field))
-
-
-/*
- * MACRO: FExtr
- *
- * Purpose
- *    The macro "FExtr" extracts the value of a bit field by masking and
- *    shifting it appropriately.
- *
- * Input
- *    Data      	Data containing the bit-field to be extracted.
- *    Field     	Encoded bit field (using the macro "Fld").
- *
- * Output
- *    FExtr     	Bit-field value.
- */
-
-#define FExtr(Data, Field) \
-                	((UData (Data) >> FShft (Field)) & FAlnMsk (Field))
-
-
-#endif /* __BITFIELD_H */
-- 
2.20.0