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authorLinus Torvalds <torvalds@linux-foundation.org>2011-10-27 10:39:10 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2011-10-27 10:39:10 +0400
commitca90666287401b475d9e0becf85bd02f069f1de8 (patch)
treead4dd789f8d5ab639c78997d3655b94fcbf660ef /arch/arm/mach-ixp2000/include/mach/gpio-ixp2000.h
parent60325f0c6ee7c6b68f95aaa643260fb33d4bdd88 (diff)
parent374e759db148d1e874e3afb76707082af67e0984 (diff)
downloadlinux-ca90666287401b475d9e0becf85bd02f069f1de8.tar.xz
Merge branch 'gpio' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm
* 'gpio' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm: (43 commits) ARM: 7135/1: ep93xx: bring back missing <mach/gpio.h> ARM: 7104/1: plat-pxa: break out GPIO driver specifics ARM: 7103/1: plat-pxa: move PXA GPIO driver to GPIO subsystem ARM: 7042/3: mach-ep93xx: break out GPIO driver specifics ARM: 7101/1: arm/tegra: Replace <mach/gpio.h> with <mach/gpio-tegra.h> ARM: 7094/1: arm/tegra: Move EN_VDD_1V05_GPIO to board-harmony.h ARM: 7083/1: rewrite U300 GPIO to use gpiolib ARM: 7074/1: gpio: davinci: eliminate unused variable warnings ARM: 7063/1: Orion: gpio: add missing include of linux/types.h ARM: 7055/1: arm/tegra: mach/gpio.h: include linux/types.h to fix build ARM: 7054/1: arm/tegra: Delete custom gpio_to_irq, and irq_to_gpio ARM: 7053/1: gpio/tegra: Implement gpio_chip.to_irq ARM: 7052/1: gpio/tegra: Remove use of irq_to_gpio ARM: 7057/1: mach-pnx4008: rename GPIO header ARM: 7056/1: plat-nomadik: kill off <plat/gpio.h> ARM: 7050/1: mach-sa1100: delete irq_to_gpio() function ARM: 7049/1: mach-sa1100: move SA1100 GPIO driver to GPIO subsystem ARM: 7045/1: mach-lpc32xx: break out GPIO driver specifics ARM: 7044/1: mach-lpc32xx: move LPC32XX GPIO driver to GPIO subsystem ARM: 7043/1: mach-ixp2000: rename GPIO header ... Fix up trivial conflicts in arch/arm/mach-u300/Kconfig manually
Diffstat (limited to 'arch/arm/mach-ixp2000/include/mach/gpio-ixp2000.h')
-rw-r--r--arch/arm/mach-ixp2000/include/mach/gpio-ixp2000.h48
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/arm/mach-ixp2000/include/mach/gpio-ixp2000.h b/arch/arm/mach-ixp2000/include/mach/gpio-ixp2000.h
new file mode 100644
index 000000000000..af836c76c3f1
--- /dev/null
+++ b/arch/arm/mach-ixp2000/include/mach/gpio-ixp2000.h
@@ -0,0 +1,48 @@
+/*
+ * arch/arm/mach-ixp2000/include/mach/gpio.h
+ *
+ * Copyright (C) 2002 Intel Corporation.
+ *
+ * This program is free software, you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/*
+ * IXP2000 GPIO in/out, edge/level detection for IRQs:
+ * IRQs are generated on Falling-edge, Rising-Edge, Level-low, Level-High
+ * or both Falling-edge and Rising-edge.
+ * This must be called *before* the corresponding IRQ is registerd.
+ * Use this instead of directly setting the GPIO registers.
+ * GPIOs may also be used as GPIOs (e.g. for emulating i2c/smb)
+ */
+#ifndef __ASM_ARCH_GPIO_H
+#define __ASM_ARCH_GPIO_H
+
+#ifndef __ASSEMBLY__
+
+#define GPIO_IN 0
+#define GPIO_OUT 1
+
+#define IXP2000_GPIO_LOW 0
+#define IXP2000_GPIO_HIGH 1
+
+extern void gpio_line_config(int line, int direction);
+
+static inline int gpio_line_get(int line)
+{
+ return (((*IXP2000_GPIO_PLR) >> line) & 1);
+}
+
+static inline void gpio_line_set(int line, int value)
+{
+ if (value == IXP2000_GPIO_HIGH) {
+ ixp2000_reg_write(IXP2000_GPIO_POSR, 1 << line);
+ } else if (value == IXP2000_GPIO_LOW) {
+ ixp2000_reg_write(IXP2000_GPIO_POCR, 1 << line);
+ }
+}
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* ASM_ARCH_IXP2000_GPIO_H_ */