118 lines
3.4 KiB
C
118 lines
3.4 KiB
C
/* $NetBSD: imx6_gpio.c,v 1.1 2014/09/25 05:05:28 ryo Exp $ */
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/*-
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* Copyright (c) 2007 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Matt Thomas
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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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* 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 the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN 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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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: imx6_gpio.c,v 1.1 2014/09/25 05:05:28 ryo Exp $");
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#include "opt_imx.h"
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#include "locators.h"
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#include "gpio.h"
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#include <sys/param.h>
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#include <sys/evcnt.h>
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#include <sys/atomic.h>
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#include <machine/intr.h>
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#include <arm/cpu.h>
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#include <arm/armreg.h>
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#include <arm/cpufunc.h>
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#include <sys/bus.h>
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#include <arm/imx/imx6_reg.h>
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#include <arm/imx/imx6var.h>
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#include <arm/pic/picvar.h>
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#include <arm/imx/imxgpioreg.h>
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#include <arm/imx/imxgpiovar.h>
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#if NGPIO > 0
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#include <sys/gpio.h>
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#include <dev/gpio/gpiovar.h>
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#endif
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const int imxgpio_ngroups = GPIO_NGROUPS;
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int
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imxgpio_match(device_t parent, cfdata_t cfdata, void *aux)
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{
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struct axi_attach_args *aa = aux;
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switch(aa->aa_addr) {
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case IMX6_AIPS1_BASE + AIPS1_GPIO1_BASE:
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case IMX6_AIPS1_BASE + AIPS1_GPIO2_BASE:
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case IMX6_AIPS1_BASE + AIPS1_GPIO3_BASE:
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case IMX6_AIPS1_BASE + AIPS1_GPIO4_BASE:
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case IMX6_AIPS1_BASE + AIPS1_GPIO5_BASE:
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case IMX6_AIPS1_BASE + AIPS1_GPIO6_BASE:
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case IMX6_AIPS1_BASE + AIPS1_GPIO7_BASE:
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return 1;
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}
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return 0;
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}
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void
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imxgpio_attach(device_t parent, device_t self, void *aux)
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{
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struct axi_attach_args * const aa = aux;
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bus_space_handle_t ioh;
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int error, group;
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if (aa->aa_irq == AXICF_IRQ_DEFAULT &&
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aa->aa_irqbase != AXICF_IRQBASE_DEFAULT) {
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aprint_error_dev(self, "missing intr in config\n");
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return;
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}
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if (aa->aa_irq != AXICF_IRQ_DEFAULT &&
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aa->aa_irqbase == AXICF_IRQBASE_DEFAULT) {
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aprint_error_dev(self, "missing irqbase in config\n");
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return;
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}
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if (aa->aa_size == AXICF_SIZE_DEFAULT)
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aa->aa_size = GPIO_SIZE;
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error = bus_space_map(aa->aa_iot, aa->aa_addr, aa->aa_size,
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0, &ioh);
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if (error) {
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aprint_error(": failed to map register %#lx@%#lx: %d\n",
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aa->aa_size, aa->aa_addr, error);
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return;
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}
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group = (aa->aa_addr - IMX6_AIPS1_BASE - AIPS1_GPIO1_BASE) / 0x4000;
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imxgpio_attach_common(self, aa->aa_iot, ioh, group,
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aa->aa_irq, aa->aa_irqbase);
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}
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