1 /* $NetBSD: imx51_gpio.c,v 1.1 2010/11/30 13:05:27 bsh Exp $ */ 2 3 /* derived from imx31_gpio.c */ 4 /*- 5 * Copyright (c) 2007 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Matt Thomas 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: imx51_gpio.c,v 1.1 2010/11/30 13:05:27 bsh Exp $"); 34 35 #include "locators.h" 36 #include "gpio.h" 37 38 #include <sys/param.h> 39 #include <sys/evcnt.h> 40 #include <sys/atomic.h> 41 42 #include <machine/intr.h> 43 44 #include <arm/cpu.h> 45 #include <arm/armreg.h> 46 #include <arm/cpufunc.h> 47 48 #include <machine/bus.h> 49 50 #include <arm/imx/imx51reg.h> 51 #include <arm/imx/imx51var.h> 52 #include <arm/pic/picvar.h> 53 54 #include <arm/imx/imxgpioreg.h> 55 #include <arm/imx/imxgpiovar.h> 56 57 #if NGPIO > 0 58 #include <sys/gpio.h> 59 #include <dev/gpio/gpiovar.h> 60 #endif 61 62 const int imxgpio_ngroups = GPIO_NGROUPS; 63 64 int 65 imxgpio_match(device_t parent, cfdata_t cfdata, void *aux) 66 { 67 struct axi_attach_args *aa = aux; 68 69 switch(aa->aa_addr) { 70 case GPIO1_BASE: 71 case GPIO2_BASE: 72 case GPIO3_BASE: 73 case GPIO4_BASE: 74 return 1; 75 } 76 77 return 0; 78 } 79 80 void 81 imxgpio_attach(device_t parent, device_t self, void *aux) 82 { 83 struct axi_attach_args * const aa = aux; 84 bus_space_handle_t ioh; 85 int error; 86 87 if (aa->aa_irq == AXICF_IRQ_DEFAULT && 88 aa->aa_irqbase != AXICF_IRQBASE_DEFAULT) { 89 aprint_error_dev(self, "missing intr in config\n"); 90 return; 91 } 92 if (aa->aa_irq != AXICF_IRQ_DEFAULT && 93 aa->aa_irqbase == AXICF_IRQBASE_DEFAULT) { 94 aprint_error_dev(self, "missing irqbase in config\n"); 95 return; 96 } 97 98 if (aa->aa_size == AXICF_SIZE_DEFAULT) 99 aa->aa_size = GPIO_SIZE; 100 101 error = bus_space_map(aa->aa_iot, aa->aa_addr, aa->aa_size, 102 0, &ioh); 103 104 if (error) { 105 aprint_error(": failed to map register %#lx@%#lx: %d\n", 106 aa->aa_size, aa->aa_addr, error); 107 return; 108 } 109 110 imxgpio_attach_common(self, aa->aa_iot, ioh, 111 (aa->aa_addr - GPIO1_BASE) / 0x4000, 112 aa->aa_irq, aa->aa_irqbase); 113 } 114 115