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From: Sascha Hauer <s.hauer@pengutronix.de>
To: barebox@lists.infradead.org
Cc: Marek Vasut <marex@denx.de>
Subject: [PATCH 06/13] ARM: Add U-Boot specific io functions
Date: Tue,  9 Dec 2014 20:03:29 +0100	[thread overview]
Message-ID: <1418151816-24593-7-git-send-email-s.hauer@pengutronix.de> (raw)
In-Reply-To: <1418151816-24593-1-git-send-email-s.hauer@pengutronix.de>

To make it easier to adopt code from U-Boot.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 arch/arm/include/asm/io.h | 57 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)

diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h
index ccf1f59..850a99c 100644
--- a/arch/arm/include/asm/io.h
+++ b/arch/arm/include/asm/io.h
@@ -12,4 +12,61 @@ extern void memcpy_fromio(void *, const volatile void __iomem *, size_t);
 extern void memcpy_toio(volatile void __iomem *, const void *, size_t);
 extern void memset_io(volatile void __iomem *, int, size_t);
 
+/*
+ * Clear and set bits in one shot. These macros can be used to clear and
+ * set multiple bits in a register using a single call. These macros can
+ * also be used to set a multiple-bit bit pattern using a mask, by
+ * specifying the mask in the 'clear' parameter and the new bit pattern
+ * in the 'set' parameter.
+ */
+
+#define out_arch(type,endian,a,v)	__raw_write##type(cpu_to_##endian(v),a)
+#define in_arch(type,endian,a)		endian##_to_cpu(__raw_read##type(a))
+
+#define out_le64(a,v)	out_arch(q,le64,a,v)
+#define out_le32(a,v)	out_arch(l,le32,a,v)
+#define out_le16(a,v)	out_arch(w,le16,a,v)
+
+#define in_le64(a)	in_arch(q,le64,a)
+#define in_le32(a)	in_arch(l,le32,a)
+#define in_le16(a)	in_arch(w,le16,a)
+
+#define out_be32(a,v)	out_arch(l,be32,a,v)
+#define out_be16(a,v)	out_arch(w,be16,a,v)
+
+#define in_be32(a)	in_arch(l,be32,a)
+#define in_be16(a)	in_arch(w,be16,a)
+
+#define out_8(a,v)	__raw_writeb(v,a)
+#define in_8(a)		__raw_readb(a)
+
+#define clrbits(type, addr, clear) \
+	out_##type((addr), in_##type(addr) & ~(clear))
+
+#define setbits(type, addr, set) \
+	out_##type((addr), in_##type(addr) | (set))
+
+#define clrsetbits(type, addr, clear, set) \
+	out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
+
+#define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
+#define setbits_be32(addr, set) setbits(be32, addr, set)
+#define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
+
+#define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
+#define setbits_le32(addr, set) setbits(le32, addr, set)
+#define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
+
+#define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
+#define setbits_be16(addr, set) setbits(be16, addr, set)
+#define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
+
+#define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
+#define setbits_le16(addr, set) setbits(le16, addr, set)
+#define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
+
+#define clrbits_8(addr, clear) clrbits(8, addr, clear)
+#define setbits_8(addr, set) setbits(8, addr, set)
+#define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
+
 #endif	/* __ASM_ARM_IO_H */
-- 
2.1.3


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  parent reply	other threads:[~2014-12-09 19:04 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-12-09 19:03 MXS initialization support Sascha Hauer
2014-12-09 19:03 ` [PATCH 01/13] scripts: add mxsimage tool Sascha Hauer
2014-12-09 19:03 ` [PATCH 02/13] scripts: Add mxsboot tool Sascha Hauer
2014-12-10  7:01   ` Sascha Hauer
2014-12-09 19:03 ` [PATCH 03/13] scripts: Add mxs-usb-loader tool Sascha Hauer
2014-12-09 19:03 ` [PATCH 04/13] drivers: remove unnecessary mach/imx-regs.h include Sascha Hauer
2014-12-09 19:03 ` [PATCH 05/13] ARM: MXS: " Sascha Hauer
2014-12-09 19:03 ` Sascha Hauer [this message]
2014-12-09 19:03 ` [PATCH 07/13] ARM: mxs: Add lowlevel setup from U-Boot Sascha Hauer
2014-12-09 19:03 ` [PATCH 08/13] ARM: Add get_sp() and get_lr() functions Sascha Hauer
2014-12-09 19:03 ` [PATCH 09/13] ARM: MXS: Add more base address defines Sascha Hauer
2014-12-09 19:03 ` [PATCH 10/13] ARM: MXS: Enable iomux support for pbl Sascha Hauer
2014-12-09 19:03 ` [PATCH 11/13] ARM: MXS: Add multiimage support Sascha Hauer
2014-12-09 19:03 ` [PATCH 12/13] ARM: MXS: Update Karo TX28 board support Sascha Hauer
2014-12-09 19:03 ` [PATCH 13/13] Documentation: Add documentation for booting Freescale MXS SoCs Sascha Hauer
2014-12-10 12:28 ` MXS initialization support Marek Vasut

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