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      1 /*	$NetBSD: imxgpiovar.h,v 1.3 2020/01/15 01:09:56 jmcneill Exp $ */
      2 /*-
      3  * Copyright (c) 2007 The NetBSD Foundation, Inc.
      4  * All rights reserved.
      5  *
      6  * This code is derived from software contributed to The NetBSD Foundation
      7  * by Matt Thomas
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     19  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     20  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     21  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     22  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     28  * POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 #ifndef _ARM_IMX_IMXGPIOVAR_H
     31 #define _ARM_IMX_IMXGPIOVAR_H
     32 
     33 #include <sys/gpio.h>
     34 #include <dev/gpio/gpiovar.h>
     35 
     36 #include <arm/imx/imxgpioreg.h>	/* for GPIO_NPINS */
     37 
     38 struct imxgpio_softc {
     39 	struct pic_softc gpio_pic;
     40 
     41 	device_t gpio_dev;
     42 	bus_space_tag_t gpio_memt;
     43 	bus_space_handle_t gpio_memh;
     44 
     45 	void *gpio_is;
     46 	void *gpio_is_high;
     47 
     48 	int gpio_unit;
     49 	int gpio_irqbase;
     50 	uint32_t gpio_enable_mask;
     51 	uint32_t gpio_edge_mask;
     52 	uint32_t gpio_level_mask;
     53 #if NGPIO > 0
     54 	struct gpio_chipset_tag gpio_chipset;
     55 	gpio_pin_t gpio_pins[32];
     56 #endif
     57 
     58 	kmutex_t gpio_lock;
     59 };
     60 
     61 struct imxgpio_pin {
     62 	int pin_no;
     63 	u_int pin_flags;
     64 	bool pin_actlo;
     65 };
     66 
     67 void imxgpio_attach_common(device_t);
     68 /* defined imx[35]1_gpio.c */
     69 extern const int imxgpio_ngroups;
     70 int imxgpio_match(device_t, cfdata_t, void *);
     71 void imxgpio_attach(device_t, device_t, void *);
     72 
     73 int imxgpio_pin_read(void *, int);
     74 void imxgpio_pin_write(void *, int, int);
     75 void imxgpio_pin_ctl(void *, int, int);
     76 
     77 /* in-kernel GPIO access utility functions */
     78 void imxgpio_set_direction(u_int, int);
     79 void imxgpio_data_write(u_int, u_int);
     80 bool imxgpio_data_read(u_int);
     81 
     82 #define	GPIO_NO(group, pin)	(((group) - 1) * GPIO_NPINS + (pin))
     83 #define	GPIO_MODULE(pin)	((pin) / GPIO_NPINS)
     84 
     85 #endif	/* _ARM_IMX_IMXGPIOVAR_H */
     86