BCM2708: Add support for AUX interrupts.
This commit is contained in:
Gregory Nutt
parent
d160ae8a32
commit
477a8d1aa7
@ -22,7 +22,13 @@ config BCM2708_MINI_UART
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bool "Mini-UART"
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config BCM2708_PL011_UART
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bool "PL011UART"
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bool "PL011 UART"
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config BCM2708_SPI1
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bool "SPI1"
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config BCM2708_SPI2
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bool "SPI2"
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endmenu # BCM2708 Peripheral Selections
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@ -72,7 +72,7 @@ endif
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# BCM2708-specific source files.
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CHIP_CSRCS = bcm_boot.c bcm_memorymap.c bcm_clockconfig.c bcm_irq.c
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CHIP_CSRCS += bcm_tickless.c bcm_gpio.c bcm_lowputc.c
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CHIP_CSRCS += bcm_tickless.c bcm_gpio.c bcm_aux.c bcm_lowputc.c
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ifeq ($(CONFIG_BCM2708_GPIO_IRQ),y)
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CHIP_CSRCS += bcm_gpioint.c
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220
arch/arm/src/bcm2708/bcm_aux.c
Normal file
220
arch/arm/src/bcm2708/bcm_aux.c
Normal file
@ -0,0 +1,220 @@
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/****************************************************************************
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* arch/arm/src/bcm2708/bcm_aux.c
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*
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* Copyright (C) 2017 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <nuttx/arch.h>
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#include <arch/irq.h>
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#include "up_arch.h"
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#include "bcm_config.h"
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#include "chip/bcm2708_aux.h"
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#include "bcm_aux.h"
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: bcm_aux_interrupt
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*
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* Description:
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* AUX interrupt handler
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*
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* Input Parameters:
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* Standard interrupt input parameters
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*
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* Returned Value:
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* Always returns OK
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*
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* Assumptions:
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* Interrupts ar disabled
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*
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****************************************************************************/
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static int bcm_aux_interrupt(int irq, FAR void *context, FAR void *arg)
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{
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uint32_t auxirq;
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/* Read the pending AUX interrupts */
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auxirq = getreg32(BCM_AUX_IRQ);
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#ifdef CONFIG_BCM2708_MINI_UART
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if ((auxirq & BCM_AUX_IRQ_MU) != 0)
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{
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(void)bcm_mu_interrupt(irq, context, arg);
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}
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#endif
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#ifdef CONFIG_BCM2708_SPI1
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if ((auxirq & BCM_AUX_IRQ_SPI1) != 0)
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{
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(void)bcm_spi1_interrupt(irq, context, arg);
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}
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#endif
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#ifdef CONFIG_BCM2708_SPI2
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if ((auxirq & BCM_AUX_IRQ_SPI2) != 0)
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{
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(void)bcm_spi2_interrupt(irq, context, arg);
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}
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#endif
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return OK;
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: bcm_aux_irqinitialize
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*
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* Description:
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* Called during IRQ initialize to initialize the shard AUX interrupt
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* logic.
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*
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****************************************************************************/
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void bcm_aux_irqinitialize(void)
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{
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/* Disable all AUX interrupt sources (Also disables all peripheral
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* register accesses).
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*/
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putreg32(0, BCM_AUX_ENB);
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/* Attach and enable the AUX interrupt */
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(void)irq_attach(BCM_IRQ_AUX, bcm_aux_interrupt, NULL);
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up_enable_irq(BCM_IRQ_AUX);
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}
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/****************************************************************************
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* Name: bcm_aux_enable
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*
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* Description:
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* Enable the specified AUX interrupt (also enables access to peripheral
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* registers).
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*
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****************************************************************************/
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void bcm_aux_enable(enum bcm_aux_peripheral_e periph, FAR void *arg)
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{
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uint32_t setbits;
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/* Read the AUX perpheral enable */
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#ifdef CONFIG_BCM2708_MINI_UART
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if (periph == BCM_AUX_MINI_UART)
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{
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setbits = BCM_AUX_ENB_MU;
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}
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else
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#endif
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#ifdef CONFIG_BCM2708_SPI1
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if (periph == BCM_AUX_MINI_UART)
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{
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setbits = BCM_AUX_ENB_SPI1;
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}
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else
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#endif
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#ifdef CONFIG_BCM2708_SPI2
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if (periph == BCM_AUX_MINI_UART)
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{
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setbits = BCM_AUX_ENB_SPI1;
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}
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else
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#endif
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{
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return;
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}
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modifyreg32(BCM_AUX_ENB, 0, setbits);
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}
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/****************************************************************************
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* Name: bcm_aux_disable
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*
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* Description:
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* Disable the specified AUX interrupt (also disables access to peripheral
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* registers).
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*
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****************************************************************************/
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void bcm_aux_disable(enum bcm_aux_peripheral_e periph)
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{
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uint32_t clrbits;
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/* Read the AUX perpheral enable */
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#ifdef CONFIG_BCM2708_MINI_UART
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if (periph == BCM_AUX_MINI_UART)
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{
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clrbits = BCM_AUX_ENB_MU;
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}
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else
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#endif
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#ifdef CONFIG_BCM2708_SPI1
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if (periph == BCM_AUX_MINI_UART)
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{
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clrbits = BCM_AUX_ENB_SPI1;
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}
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else
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#endif
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#ifdef CONFIG_BCM2708_SPI2
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if (periph == BCM_AUX_MINI_UART)
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{
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clrbits = BCM_AUX_ENB_SPI1;
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}
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else
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#endif
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{
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return;
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}
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modifyreg32(BCM_AUX_ENB, clrbits, 0);
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}
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114
arch/arm/src/bcm2708/bcm_aux.h
Normal file
114
arch/arm/src/bcm2708/bcm_aux.h
Normal file
@ -0,0 +1,114 @@
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/****************************************************************************
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* arch/arm/src/bcm2708/bcm_aux.h
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*
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* Copyright (C) 2017 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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||||
* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
|
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __ARCH_ARM_SRC_BCM2708_BCM_AUX_H
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#define __ARCH_ARM_SRC_BCM2708_BCM_AUX_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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/****************************************************************************
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* Public Types
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****************************************************************************/
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enum bcm_aux_peripheral_e
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{
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BCM_AUX_MINI_UART = 0, /* Mini UART peripheral */
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BCM_AUX_MINI_SPI1, /* SPI1 peripheral */
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BCM_AUX_MINI_SPI2, /* SPI2 peripheral */
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};
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: bcm_aux_irqinitialize
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*
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* Description:
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* Called during IRQ initialize to initialize the shard AUX interrupt
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* logic.
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*
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****************************************************************************/
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void bcm_aux_irqinitialize(void);
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/****************************************************************************
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* Name: bcm_aux_enable
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*
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* Description:
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* Enable the specified AUX interrupt (also enables access to peripheral
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* registers).
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*
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****************************************************************************/
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void bcm_aux_enable(enum bcm_aux_peripheral_e periph, FAR void *arg);
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/****************************************************************************
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* Name: bcm_aux_disable
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*
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* Description:
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* Disable the specified AUX interrupt (also disables access to peripheral
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* registers).
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*
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****************************************************************************/
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void bcm_aux_disable(enum bcm_aux_peripheral_e periph);
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/****************************************************************************
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* Name: bcm_[mu|spi1|spi2]_interupt
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*
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* Description:
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* These callbacks must be provided by Mini-UART, SPI1, and SPI2 logic
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* when those peripherals are configured. These callbacks will be invoked
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* from interrupt level processing when an interrupt for one of those
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* peripherals is received (with interrupts disabled)
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*
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****************************************************************************/
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#ifdef CONFIG_BCM2708_MINI_UART
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int bcm_mu_interrupt(int irq, FAR void *context, FAR void *arg);
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#endif
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#ifdef CONFIG_BCM2708_SPI1
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int bcm_spi1_interrupt(int irq, FAR void *context, FAR void *arg);
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#endif
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#ifdef CONFIG_BCM2708_SPI2
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int bcm_spi2_interrupt(int irq, FAR void *context, FAR void *arg);
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#endif
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#endif /* __ARCH_ARM_SRC_BCM2708_BCM_AUX_H */
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@ -52,6 +52,7 @@
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#include "up_internal.h"
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#include "group/group.h"
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#include "bcm_aux.h"
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#include "bcm_gpio.h"
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#include "chip/bcm2708_irq.h"
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@ -93,6 +94,10 @@ void up_irqinitialize(void)
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CURRENT_REGS = NULL;
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/* Intitialize AUX interrupts */
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bcm_aux_irqinitialize();
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#ifdef CONFIG_BCM2708_GPIO_IRQ
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/* Initialize GPIO interrrupts */
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@ -44,7 +44,7 @@
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#include "up_arch.h"
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#include "chip/bcm2708_uart_spi.h"
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#include "chip/bcm2708_aux.h"
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#include "bcm_config.h"
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#include "bcm_lowputc.h"
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@ -1,5 +1,5 @@
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/************************************************************************************
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* arch/arm/src/bcm2708/chip/bcm2708_uart.h
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* arch/arm/src/bcm2708/chip/bcm2708_aux.h
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*
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* Copyright (C) 2017 Gregory Nutt. All rights reserved.
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* Author: Alan Carvalho de Assis <acassis@gmail.com>
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@ -33,8 +33,8 @@
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*
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************************************************************************************/
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#ifndef __ARCH_ARM_SRC_BCM_CHIP_BCM_UART_H
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#define __ARCH_ARM_SRC_BCM_CHIP_BCM_UART_H
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#ifndef __ARCH_ARM_SRC_BCM_CHIP_BCM_AUX_H
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#define __ARCH_ARM_SRC_BCM_CHIP_BCM_AUX_H
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/************************************************************************************
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* Included Files
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@ -208,4 +208,4 @@
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#define BCM_AUX_SPI_STAT_TXLEVEL_SHIFT 24 /* Data units in the FX FIFO */
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#define BCM_AUX_SPI_STAT_TXLEVEL_MASK (0xff << BCM_AUX_SPI_STAT_TXLEVEL_SHIFT)
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#endif /* __ARCH_ARM_SRC_BCM_CHIP_BCM_UART_H */
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#endif /* __ARCH_ARM_SRC_BCM_CHIP_BCM_AUX_H */
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