1 /* $NetBSD: imx51_gpio.c,v 1.4 2019/07/24 12:33:18 hkenken 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 1.4 2019/07/24 12:33:18 hkenken Exp $");
34
35 #include "opt_imx.h"
36
37 #include "locators.h"
38 #include "gpio.h"
39
40 #define _INTR_PRIVATE
41
42 #include <sys/param.h>
43 #include <sys/evcnt.h>
44 #include <sys/atomic.h>
45
46 #include <machine/intr.h>
47
48 #include <arm/cpu.h>
49 #include <arm/armreg.h>
50 #include <arm/cpufunc.h>
51
52 #include <sys/bus.h>
53
54 #include <arm/imx/imx51reg.h>
55 #include <arm/imx/imx51var.h>
56 #include <arm/pic/picvar.h>
57
58 #include <arm/imx/imxgpioreg.h>
59 #include <arm/imx/imxgpiovar.h>
60
61 #if NGPIO > 0
62 #include <sys/gpio.h>
63 #include <dev/gpio/gpiovar.h>
64 #endif
65
66 const int imxgpio_ngroups = GPIO_NGROUPS;
67
68 int
imxgpio_match(device_t parent,cfdata_t cfdata,void * aux)69 imxgpio_match(device_t parent, cfdata_t cfdata, void *aux)
70 {
71 struct axi_attach_args *aa = aux;
72
73 switch(aa->aa_addr) {
74 case GPIO1_BASE:
75 case GPIO2_BASE:
76 case GPIO3_BASE:
77 case GPIO4_BASE:
78 #ifdef IMX50
79 case GPIO5_BASE:
80 case GPIO6_BASE:
81 #endif
82 return 1;
83 }
84
85 return 0;
86 }
87
88 void
imxgpio_attach(device_t parent,device_t self,void * aux)89 imxgpio_attach(device_t parent, device_t self, void *aux)
90 {
91 struct imxgpio_softc * const gpio = device_private(self);
92 struct axi_attach_args * const aa = aux;
93 bus_space_handle_t ioh;
94 int error;
95
96 if (aa->aa_irq == AXICF_IRQ_DEFAULT &&
97 aa->aa_irqbase != AXICF_IRQBASE_DEFAULT) {
98 aprint_error_dev(self, "missing intr in config\n");
99 return;
100 }
101 if (aa->aa_irq != AXICF_IRQ_DEFAULT &&
102 aa->aa_irqbase == AXICF_IRQBASE_DEFAULT) {
103 aprint_error_dev(self, "missing irqbase in config\n");
104 return;
105 }
106
107 if (aa->aa_size == AXICF_SIZE_DEFAULT)
108 aa->aa_size = GPIO_SIZE;
109
110 error = bus_space_map(aa->aa_iot, aa->aa_addr, aa->aa_size,
111 0, &ioh);
112 if (error) {
113 aprint_error(": failed to map register %#lx@%#lx: %d\n",
114 aa->aa_size, aa->aa_addr, error);
115 return;
116 }
117
118 gpio->gpio_is = intr_establish(aa->aa_irq,
119 IPL_HIGH, IST_LEVEL, pic_handle_intr, &gpio->gpio_pic);
120 KASSERT(gpio->gpio_is != NULL );
121 gpio->gpio_is_high = intr_establish(aa->aa_irq + 1,
122 IPL_HIGH, IST_LEVEL, pic_handle_intr, &gpio->gpio_pic);
123 KASSERT(gpio->gpio_is_high != NULL);
124
125 gpio->gpio_memt = aa->aa_iot;
126 gpio->gpio_memh = ioh;
127 gpio->gpio_unit = (aa->aa_addr - GPIO1_BASE) / 0x4000;
128 gpio->gpio_irqbase = aa->aa_irqbase;
129
130 imxgpio_attach_common(self);
131 }
132
133