diff options
| author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2009-04-10 22:07:20 +0000 |
|---|---|---|
| committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2009-04-10 22:07:20 +0000 |
| commit | 7b7fc55ce2dcc9adae56185d40e62e6c2276c98f (patch) | |
| tree | 759bc03e7ba223c70abd7c3311ed3ffadf168bbb /nuttx/arch/arm/src/imx/imx_gpio.h | |
| parent | 6a80bc8280dfdd98426010f986928a142debddfd (diff) | |
| download | px4-nuttx-7b7fc55ce2dcc9adae56185d40e62e6c2276c98f.tar.gz px4-nuttx-7b7fc55ce2dcc9adae56185d40e62e6c2276c98f.tar.bz2 px4-nuttx-7b7fc55ce2dcc9adae56185d40e62e6c2276c98f.zip | |
Basic i.MX1 low-level boot
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1695 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/arch/arm/src/imx/imx_gpio.h')
| -rwxr-xr-x | nuttx/arch/arm/src/imx/imx_gpio.h | 376 |
1 files changed, 376 insertions, 0 deletions
diff --git a/nuttx/arch/arm/src/imx/imx_gpio.h b/nuttx/arch/arm/src/imx/imx_gpio.h index 1265f2658..b1e5fc36a 100755 --- a/nuttx/arch/arm/src/imx/imx_gpio.h +++ b/nuttx/arch/arm/src/imx/imx_gpio.h @@ -1,5 +1,6 @@ /************************************************************************************
* arch/arm/src/imx/imx_gpio.h
+ * arch/arm/src/chip/imx_gpio.h
*
* Copyright (C) 2009 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
@@ -39,6 +40,8 @@ /************************************************************************************
* Included Files
************************************************************************************/
+
+#include "up_arch.h" /* getreg32(), putreg32() */
/************************************************************************************
* Definitions
@@ -180,3 +183,376 @@ ************************************************************************************/
#endif /* __ARCH_ARM_IMX_GPIO_H */
+
+#ifndef __ASSEMBLY__
+
+/* Handler circular include... This file includes up_arch.h, but this file is
+ * included by up_arch.h (via chip.h) BEFORE getreg32 is defined.
+ */
+
+#if !defined(__ARCH_ARM_IMX_GPIOHELPERS_H) && defined(getreg32)
+#define __ARCH_ARM_IMX_GPIOHELPERS_H
+
+/* Select whether the pin is an input or output */
+
+static inline void imxgpio_dirout(int port, int bit)
+{
+ uint32 regval = getreg32(IMX_GPIO_DDIR(port));
+ regval |= (1 << bit);
+ putreg32(regval, IMX_GPIO_DDIR(port));
+}
+
+static inline void imxgpio_dirin(int port, int bit)
+{
+ uint32 regval = getreg32(IMX_GPIO_DDIR(port));
+ regval &= ~(1 << bit);
+ putreg32(regval, IMX_GPIO_DDIR(port));
+}
+
+/* Select input configuration */
+
+static inline void imxgpio_ocrain(int port, int bit)
+{
+ uint32 regval;
+ uint32 regaddr;
+ int shift;
+
+ if (bit < 16)
+ {
+ regaddr = IMX_GPIO_OCR1(port);
+ shift = (bit << 1);
+ }
+ else
+ {
+ regaddr = IMX_GPIO_OCR2(port);
+ shift = ((bit - 16) << 1);
+ }
+
+ regval = getreg32(regaddr);
+ regval &= ~(3 << shift);
+ putreg32(regval, regaddr);
+}
+
+static inline void imxgpio_ocrbin(int port, int bit)
+{
+ uint32 regval;
+ uint32 regaddr;
+ int shift;
+
+ if (bit < 16)
+ {
+ regaddr = IMX_GPIO_OCR1(port);
+ shift = (bit << 1);
+ }
+ else
+ {
+ regaddr = IMX_GPIO_OCR2(port);
+ shift = ((bit - 16) << 1);
+ }
+
+ regval = getreg32(regaddr);
+ regval &= ~(3 << shift);
+ regval |= (1 << shift);
+ putreg32(regval, regaddr);
+}
+
+static inline void imxgpio_ocrcin(int port, int bit)
+{
+ uint32 regval;
+ uint32 regaddr;
+ int shift;
+
+ if (bit < 16)
+ {
+ regaddr = IMX_GPIO_OCR1(port);
+ shift = (bit << 1);
+ }
+ else
+ {
+ regaddr = IMX_GPIO_OCR2(port);
+ shift = ((bit - 16) << 1);
+ }
+
+ regval = getreg32(regaddr);
+ regval &= ~(3 << shift);
+ regval |= (2 << shift);
+ putreg32(regval, regaddr);
+}
+
+static inline void imxgpio_ocrodrin(int port, int bit)
+{
+ uint32 regval;
+ uint32 regaddr;
+ int shift;
+
+ if (bit < 16)
+ {
+ regaddr = IMX_GPIO_OCR1(port);
+ shift = (bit << 1);
+ }
+ else
+ {
+ regaddr = IMX_GPIO_OCR2(port);
+ shift = ((bit - 16) << 1);
+ }
+
+ regval = getreg32(regaddr);
+ regval |= (3 << shift);
+ putreg32(regval, regaddr);
+}
+
+/* Input configuration */
+
+static inline void imxgpio_aoutgpio(int port, int bit)
+{
+ uint32 regval;
+ uint32 regaddr;
+ int shift;
+
+ if (bit < 16)
+ {
+ regaddr = IMX_GPIO_ICONFA1(port);
+ shift = (bit << 1);
+ }
+ else
+ {
+ regaddr = IMX_GPIO_ICONFA2(port);
+ shift = ((bit - 16) << 1);
+ }
+
+ regval = getreg32(regaddr);
+ regval &= ~(3 << shift);
+ putreg32(regval, regaddr);
+}
+
+static inline void imxgpio_aoutisr(int port, int bit)
+{
+ uint32 regval;
+ uint32 regaddr;
+ int shift;
+
+ if (bit < 16)
+ {
+ regaddr = IMX_GPIO_ICONFA1(port);
+ shift = (bit << 1);
+ }
+ else
+ {
+ regaddr = IMX_GPIO_ICONFA2(port);
+ shift = ((bit - 16) << 1);
+ }
+
+ regval = getreg32(regaddr);
+ regval &= ~(3 << shift);
+ regval |= (1 << shift);
+ putreg32(regval, regaddr);
+}
+
+static inline void imxgpio_aout0(int port, int bit)
+{
+ uint32 regval;
+ uint32 regaddr;
+ int shift;
+
+ if (bit < 16)
+ {
+ regaddr = IMX_GPIO_ICONFA1(port);
+ shift = (bit << 1);
+ }
+ else
+ {
+ regaddr = IMX_GPIO_ICONFA2(port);
+ shift = ((bit - 16) << 1);
+ }
+
+ regval = getreg32(regaddr);
+ regval &= ~(3 << shift);
+ regval |= (2 << shift);
+ putreg32(regval, regaddr);
+}
+
+static inline void imxgpio_aout1(int port, int bit)
+{
+ uint32 regval;
+ uint32 regaddr;
+ int shift;
+
+ if (bit < 16)
+ {
+ regaddr = IMX_GPIO_ICONFA1(port);
+ shift = (bit << 1);
+ }
+ else
+ {
+ regaddr = IMX_GPIO_ICONFA2(port);
+ shift = ((bit - 16) << 1);
+ }
+
+ regval = getreg32(regaddr);
+ regval |= (3 << shift);
+ putreg32(regval, regaddr);
+}
+
+static inline void imxgpio_boutgpio(int port, int bit)
+{
+ uint32 regval;
+ uint32 regaddr;
+ int shift;
+
+ if (bit < 16)
+ {
+ regaddr = IMX_GPIO_ICONFB1(port);
+ shift = (bit << 1);
+ }
+ else
+ {
+ regaddr = IMX_GPIO_ICONFB2(port);
+ shift = ((bit - 16) << 1);
+ }
+
+ regval = getreg32(regaddr);
+ regval &= ~(3 << shift);
+ putreg32(regval, regaddr);
+}
+
+static inline void imxgpio_boutisr(int port, int bit)
+{
+ uint32 regval;
+ uint32 regaddr;
+ int shift;
+
+ if (bit < 16)
+ {
+ regaddr = IMX_GPIO_ICONFB1(port);
+ shift = (bit << 1);
+ }
+ else
+ {
+ regaddr = IMX_GPIO_ICONFB2(port);
+ shift = ((bit - 16) << 1);
+ }
+
+ regval = getreg32(regaddr);
+ regval &= ~(3 << shift);
+ regval |= (1 << shift);
+ putreg32(regval, regaddr);
+}
+
+static inline void imxgpio_bout0(int port, int bit)
+{
+ uint32 regval;
+ uint32 regaddr;
+ int shift;
+
+ if (bit < 16)
+ {
+ regaddr = IMX_GPIO_ICONFB1(port);
+ shift = (bit << 1);
+ }
+ else
+ {
+ regaddr = IMX_GPIO_ICONFB2(port);
+ shift = ((bit - 16) << 1);
+ }
+
+ regval = getreg32(regaddr);
+ regval &= ~(3 << shift);
+ regval |= (2 << shift);
+ putreg32(regval, regaddr);
+}
+
+static inline void imxgpio_bout1(int port, int bit)
+{
+ uint32 regval;
+ uint32 regaddr;
+ int shift;
+
+ if (bit < 16)
+ {
+ regaddr = IMX_GPIO_ICONFB1(port);
+ shift = (bit << 1);
+ }
+ else
+ {
+ regaddr = IMX_GPIO_ICONFB2(port);
+ shift = ((bit - 16) << 1);
+ }
+
+ regval = getreg32(regaddr);
+ regval |= (3 << shift);
+ putreg32(regval, regaddr);
+}
+
+/* Select whether the pin is used for its GPIO function or for
+ * its peripheral function. Also select the primary or alternate
+ * peripheral function.
+ */
+
+static inline void imxgpio_gpiofunc(int port, int bit)
+{
+ uint32 regval = getreg32(IMX_GPIO_GIUS(port));
+ regval |= (1 << bit);
+ putreg32(regval, IMX_GPIO_GIUS(port));
+}
+
+static inline void imxgpio_peripheralfunc(int port, int bit)
+{
+ uint32 regval = getreg32(IMX_GPIO_GIUS(port));
+ regval &= ~(1 << bit);
+ putreg32(regval, IMX_GPIO_GIUS(port));
+}
+
+static inline void imxgpio_altperipheralfunc(int port, int bit)
+{
+ uint32 regval = getreg32(IMX_GPIO_GPR(port));
+ regval |= (1 << bit);
+ putreg32(regval, IMX_GPIO_GPR(port));
+}
+
+static inline void imxgpio_primaryperipheralfunc(int port, int bit)
+{
+ uint32 regval = getreg32(IMX_GPIO_GPR(port));
+ regval &= ~(1 << bit);
+ putreg32(regval, IMX_GPIO_GPR(port));
+}
+
+/* Enable/disable pullups */
+
+static inline void imxgpio_pullupenable(int port, int bit)
+{
+ uint32 regval = getreg32(IMX_GPIO_PUEN(port));
+ regval |= (1 << bit);
+ putreg32(regval, IMX_GPIO_PUEN(port));
+}
+
+static inline void imxgpio_pullupdisable(int port, int bit)
+{
+ uint32 regval = getreg32(IMX_GPIO_PUEN(port));
+ regval &= ~(1 << bit);
+ putreg32(regval, IMX_GPIO_PUEN(port));
+}
+
+static inline void imxgpio_setoutput(int port, int bit)
+{
+ uint32 regval = getreg32(IMX_GPIO_DR(port));
+ regval |= (1 << bit);
+ putreg32(regval, IMX_GPIO_DR(port));
+}
+
+static inline void imxgpio_clroutput(int port, int bit)
+{
+ uint32 regval = getreg32(IMX_GPIO_DR(port));
+ regval &= ~(1 << bit);
+ putreg32(regval, IMX_GPIO_DR(port));
+}
+
+/* Useful functions for normal configurations */
+
+extern void imxgpio_configreset(int port, int bit);
+extern void imxgpio_configoutput(int port, int bit, int value);
+extern void imxgpio_configinput(int port, int bit);
+extern void imxgpio_configprimary(int port, int bit);
+
+#endif
+
+#endif /* __ARCH_ARM_IMX_GPIOHELPERS_H */
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