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author | Gregory Nutt <gnutt@nuttx.org> | 2013-06-02 13:04:40 -0600 |
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committer | Gregory Nutt <gnutt@nuttx.org> | 2013-06-02 13:04:40 -0600 |
commit | 9c0f7e4217cf195b2f83175b0014e273fbc805da (patch) | |
tree | 46f769b6188d65d2f3471b9fe7bdae2676162f56 /nuttx/arch/arm/src/sam3u/sam3u_gpioirq.c | |
parent | 872bef7d41462d36b81ddc8de82a2cde18eaf096 (diff) | |
download | px4-nuttx-9c0f7e4217cf195b2f83175b0014e273fbc805da.tar.gz px4-nuttx-9c0f7e4217cf195b2f83175b0014e273fbc805da.tar.bz2 px4-nuttx-9c0f7e4217cf195b2f83175b0014e273fbc805da.zip |
Eliminated sam3u_internal.h. Use separate header files instead. More renaming from sam3u_ to sam_ to make room in the namespce for the sam4l_
Diffstat (limited to 'nuttx/arch/arm/src/sam3u/sam3u_gpioirq.c')
-rw-r--r-- | nuttx/arch/arm/src/sam3u/sam3u_gpioirq.c | 367 |
1 files changed, 0 insertions, 367 deletions
diff --git a/nuttx/arch/arm/src/sam3u/sam3u_gpioirq.c b/nuttx/arch/arm/src/sam3u/sam3u_gpioirq.c deleted file mode 100644 index a08c4e754..000000000 --- a/nuttx/arch/arm/src/sam3u/sam3u_gpioirq.c +++ /dev/null @@ -1,367 +0,0 @@ -/**************************************************************************** - * arch/arm/src/sam3u/sam3u_gpioirq.c - * arch/arm/src/chip/sam3u_gpioirq.c - * - * Copyright (C) 2010 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <gnutt@nuttx.org> - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * 3. Neither the name NuttX nor the names of its contributors may be - * used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, - * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS - * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED - * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN - * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - ****************************************************************************/ - -/**************************************************************************** - * Included Files - ****************************************************************************/ - -#include <nuttx/config.h> - -#include <stdint.h> -#include <assert.h> -#include <errno.h> -#include <debug.h> - -#include <nuttx/init.h> -#include <nuttx/arch.h> - -#include <arch/irq.h> -#include <arch/board/board.h> - -#include "up_arch.h" -#include "up_internal.h" - -#include "sam3u_internal.h" -#include "chip/sam_pio.h" -#include "chip/sam_pmc.h" - -#ifdef CONFIG_GPIO_IRQ - -/**************************************************************************** - * Private Definitions - ****************************************************************************/ - -/**************************************************************************** - * Private Data - ****************************************************************************/ - -/**************************************************************************** - * Public Data - ****************************************************************************/ - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: sam3u_gpiobase - * - * Description: - * Return the base address of the GPIO register set - * - ****************************************************************************/ - -static inline uint32_t sam3u_gpiobase(uint16_t pinset) -{ - int port = (pinset & GPIO_PORT_MASK) >> GPIO_PORT_SHIFT; - return SAM_PION_BASE(port >> GPIO_PORT_SHIFT); -} - -/**************************************************************************** - * Name: sam3u_gpiopin - * - * Description: - * Returun the base address of the GPIO register set - * - ****************************************************************************/ - -static inline int sam3u_gpiopin(uint16_t pinset) -{ - return 1 << ((pinset & GPIO_PIN_MASK) >> GPIO_PIN_SHIFT); -} - -/**************************************************************************** - * Name: sam3u_irqbase - * - * Description: - * Return gpio information associated with this IRQ - * - ****************************************************************************/ - -static int sam3u_irqbase(int irq, uint32_t *base, int *pin) -{ - if (irq >= SAM_IRQ_NIRQS) - { -#ifdef CONFIG_GPIOA_IRQ - if (irq <= SAM_IRQ_PA31) - { - *base = SAM_PIOA_BASE; - *pin = irq - SAM_IRQ_PA0; - return OK; - } -#endif -#ifdef CONFIG_GPIOB_IRQ - if (irq <= SAM_IRQ_PB31) - { - *base = SAM_PIOB_BASE; - *pin = irq - SAM_IRQ_PB0; - return OK; - } -#endif -#ifdef CONFIG_GPIOC_IRQ - if (irq <= SAM_IRQ_PC31) - { - *base = SAM_PIOC_BASE; - *pin = irq - SAM_IRQ_PC0; - return OK; - } -#endif - } - return -EINVAL; -} - -/**************************************************************************** - * Name: up_gpioa/b/cinterrupt - * - * Description: - * Receive GPIOA/B/C interrupts - * - ****************************************************************************/ - -static int up_gpiointerrupt(uint32_t base, int irq0, void *context) -{ - uint32_t pending; - uint32_t bit; - int irq; - - pending = getreg32(base + SAM_PIO_ISR_OFFSET) & getreg32(base + SAM_PIO_IMR_OFFSET); - for (bit = 1, irq = irq0; pending != 0; bit <<= 1, irq++) - { - if ((pending & bit) != 0) - { - /* Re-deliver the IRQ (recurses! We got here from irq_dispatch!) */ - - irq_dispatch(irq, context); - - /* Remove this from the set of pending interrupts */ - - pending &= ~bit; - } - } - return OK; -} - -#ifdef CONFIG_GPIOA_IRQ -static int up_gpioainterrupt(int irq, void *context) -{ - return up_gpiointerrupt(SAM_PIOA_BASE, SAM_IRQ_PA0, context); -} -#endif - -#ifdef CONFIG_GPIOB_IRQ -static int up_gpiobinterrupt(int irq, void *context) -{ - return up_gpiointerrupt(SAM_PIOB_BASE, SAM_IRQ_PB0, context); -} -#endif - -#ifdef CONFIG_GPIOC_IRQ -static int up_gpiocinterrupt(int irq, void *context) -{ - return up_gpiointerrupt(SAM_PIOC_BASE, SAM_IRQ_PC0, context); -} -#endif - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: sam3u_gpioirqinitialize - * - * Description: - * Initialize logic to support a second level of interrupt decoding for - * GPIO pins. - * - ****************************************************************************/ - -void sam3u_gpioirqinitialize(void) -{ - uint32_t pcer; - - /* Configure GPIOA interrupts */ - -#ifdef CONFIG_GPIOA_IRQ - /* Enable GPIOA clocking */ - - pcer |= (1 << SAM_PID_PIOA); - putreg32(pcer, SAM_PMC_PCER); - - /* Clear and disable all GPIOA interrupts */ - - (void)getreg32(SAM_PIOA_ISR); - putreg32(0xffffffff, SAM_PIOA_IDR); - - /* Attach and enable the GPIOA IRQ */ - - (void)irq_attach(SAM_IRQ_PIOA, up_gpioainterrupt); - up_enable_irq(SAM_IRQ_PIOA); -#endif - - /* Configure GPIOB interrupts */ - -#ifdef CONFIG_GPIOB_IRQ - /* Enable GPIOB clocking */ - - pcer |= (1 << SAM_PID_PIOB); - putreg32(pcer, SAM_PMC_PCER); - - /* Clear and disable all GPIOB interrupts */ - - (void)getreg32(SAM_PIOB_ISR); - putreg32(0xffffffff, SAM_PIOB_IDR); - - /* Attach and enable the GPIOB IRQ */ - - (void)irq_attach(SAM_IRQ_PIOB, up_gpiobinterrupt); - up_enable_irq(SAM_IRQ_PIOB); -#endif - - /* Configure GPIOC interrupts */ - -#ifdef CONFIG_GPIOC_IRQ - /* Enable GPIOC clocking */ - - pcer |= (1 << SAM_PID_PIOC); - putreg32(pcer, SAM_PMC_PCER); - - /* Clear and disable all GPIOC interrupts */ - - (void)getreg32(SAM_PIOC_ISR); - putreg32(0xffffffff, SAM_PIOC_IDR); - - /* Attach and enable the GPIOC IRQ */ - - (void)irq_attach(SAM_IRQ_PIOC, up_gpioainterrupt); - up_enable_irq(SAM_IRQ_PIOC); -#endif -} - -/************************************************************************************ - * Name: sam3u_gpioirq - * - * Description: - * Configure an interrupt for the specified GPIO pin. - * - ************************************************************************************/ - -void sam3u_gpioirq(uint16_t pinset) -{ - uint32_t base = sam3u_gpiobase(pinset); - int pin = sam3u_gpiopin(pinset); - - /* Are any additional interrupt modes selected? */ - - if ((pinset & GPIO_INT_MASK) != 0) - { - /* Yes.. Enable additional interrupt mode */ - - putreg32(pin, base + SAM_PIO_AIMER_OFFSET); - - /* Level or edge detected interrupt? */ - - if ((pinset & GPIO_INT_LEVEL) != 0) - { - putreg32(pin, base + SAM_PIO_LSR_OFFSET); /* Level */ - } - else - { - putreg32(pin, base + SAM_PIO_ESR_OFFSET); /* Edge */ - } - - /* High level/rising edge or low level /falling edge? */ - - if ((pinset & GPIO_INT_HIGHLEVEL) != 0) - { - putreg32(pin, base + SAM_PIO_REHLSR_OFFSET); /* High level/Rising edge */ - } - else - { - putreg32(pin, base + SAM_PIO_FELLSR_OFFSET); /* Low level/Falling edge */ - } - } - else - { - /* No.. Disable additional interrupt mode */ - - putreg32(pin, base + SAM_PIO_AIMDR_OFFSET); - } -} - -/************************************************************************************ - * Name: sam3u_gpioirqenable - * - * Description: - * Enable the interrupt for specified GPIO IRQ - * - ************************************************************************************/ - -void sam3u_gpioirqenable(int irq) -{ - uint32_t base; - int pin; - - if (sam3u_irqbase(irq, &base, &pin) == OK) - { - /* Clear (all) pending interrupts and enable this pin interrupt */ - - (void)getreg32(base + SAM_PIO_ISR_OFFSET); - putreg32((1 << pin), base + SAM_PIO_IER_OFFSET); - } -} - -/************************************************************************************ - * Name: sam3u_gpioirqdisable - * - * Description: - * Disable the interrupt for specified GPIO IRQ - * - ************************************************************************************/ - -void sam3u_gpioirqdisable(int irq) -{ - uint32_t base; - int pin; - - if (sam3u_irqbase(irq, &base, &pin) == OK) - { - /* Disable this pin interrupt */ - - putreg32((1 << pin), base + SAM_PIO_IDR_OFFSET); - } -} - -#endif /* CONFIG_GPIO_IRQ */ |