Add Amlogic GPIO driver.
This commit is contained in:
jmcneill
parent
83b7d402c6
commit
f4d63a19ea
@ -1,4 +1,4 @@
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/* $NetBSD: amlogic_crureg.h,v 1.9 2015/04/19 18:54:52 jmcneill Exp $ */
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/* $NetBSD: amlogic_crureg.h,v 1.10 2015/04/25 14:41:33 jmcneill Exp $ */
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/*-
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* Copyright (c) 2015 Jared D. McNeill <jmcneill@invisible.ca>
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@ -85,6 +85,20 @@
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#define PREG_PAD_GPIO0_EN_N_REG CBUS_REG(0x200c)
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#define PREG_PAD_GPIO0_OUT_REG CBUS_REG(0x200d)
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#define PREG_PAD_GPIO0_IN_REG CBUS_REG(0x200e)
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#define PREG_PAD_GPIO0_PUPD_EN_REG CBUS_REG(0x204c)
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#define PREG_PAD_GPIO0_PUPD_REG CBUS_REG(0x203e)
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#define PREG_PAD_GPIO1_EN_N_REG CBUS_REG(0x200f)
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#define PREG_PAD_GPIO1_OUT_REG CBUS_REG(0x2010)
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#define PREG_PAD_GPIO1_IN_REG CBUS_REG(0x2011)
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#define PREG_PAD_GPIO1_PUPD_EN_REG CBUS_REG(0x204b)
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#define PREG_PAD_GPIO1_PUPD_REG CBUS_REG(0x203d)
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#define PREG_PAD_GPIO2_EN_N_REG CBUS_REG(0x2012)
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#define PREG_PAD_GPIO2_OUT_REG CBUS_REG(0x2013)
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#define PREG_PAD_GPIO2_IN_REG CBUS_REG(0x2014)
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#define PREG_PAD_GPIO2_PUPD_EN_REG CBUS_REG(0x2048)
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#define PREG_PAD_GPIO2_PUPD_REG CBUS_REG(0x203a)
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#define PREG_PAD_GPIO3_EN_N_REG CBUS_REG(0x2015)
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#define PREG_PAD_GPIO3_OUT_REG CBUS_REG(0x2016)
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302
sys/arch/arm/amlogic/amlogic_gpio.c
Normal file
302
sys/arch/arm/amlogic/amlogic_gpio.c
Normal file
@ -0,0 +1,302 @@
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/* $NetBSD: amlogic_gpio.c,v 1.1 2015/04/25 14:41:33 jmcneill Exp $ */
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/*-
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* Copyright (c) 2015 Jared D. McNeill <jmcneill@invisible.ca>
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* All rights reserved.
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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 AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR 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;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "locators.h"
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: amlogic_gpio.c,v 1.1 2015/04/25 14:41:33 jmcneill Exp $");
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/device.h>
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#include <sys/intr.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/kmem.h>
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#include <sys/gpio.h>
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#include <dev/gpio/gpiovar.h>
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#include <arm/amlogic/amlogic_reg.h>
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#include <arm/amlogic/amlogic_crureg.h>
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#include <arm/amlogic/amlogic_var.h>
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#define _C(x) (AMLOGIC_CBUS_OFFSET + (x))
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#define _AO(x) (AMLOGIC_GPIOAO_OFFSET + (x))
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const struct amlogic_gpio_pingrp {
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const char *name;
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u_int mask;
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bus_size_t en_reg;
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u_int en_shift;
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bus_size_t out_reg;
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u_int out_shift;
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bus_size_t in_reg;
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u_int in_shift;
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bus_size_t pupd_en_reg;
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u_int pupd_en_shift;
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bus_size_t pupd_reg;
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u_int pupd_shift;
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} amlogic_gpio_pingrps[] = {
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{ "GPIOX", 0x3fffff,
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_C(PREG_PAD_GPIO0_EN_N_REG), 0,
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_C(PREG_PAD_GPIO0_OUT_REG), 0,
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_C(PREG_PAD_GPIO0_IN_REG), 0,
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_C(PREG_PAD_GPIO0_PUPD_EN_REG), 0,
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_C(PREG_PAD_GPIO0_PUPD_REG), 0 },
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{ "GPIOY", 0x7fff,
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_C(PREG_PAD_GPIO1_EN_N_REG), 0,
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_C(PREG_PAD_GPIO1_OUT_REG), 0,
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_C(PREG_PAD_GPIO1_IN_REG), 0,
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_C(PREG_PAD_GPIO1_PUPD_EN_REG), 0,
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_C(PREG_PAD_GPIO1_PUPD_REG), 0 },
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{ "GPIODV", 0x3f000200,
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_C(PREG_PAD_GPIO1_EN_N_REG), 0,
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_C(PREG_PAD_GPIO1_OUT_REG), 0,
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_C(PREG_PAD_GPIO1_IN_REG), 0,
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_C(PREG_PAD_GPIO1_PUPD_EN_REG), 0,
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_C(PREG_PAD_GPIO1_PUPD_REG), 0 },
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{ "GPIOH", 0x3f,
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_C(PREG_PAD_GPIO3_EN_N_REG), 19,
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_C(PREG_PAD_GPIO3_OUT_REG), 19,
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_C(PREG_PAD_GPIO3_IN_REG), 19,
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_C(PREG_PAD_GPIO3_PUPD_EN_REG), 16,
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_C(PREG_PAD_GPIO3_PUPD_REG), 16 },
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{ "GPIOAO", 0x3fff,
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_AO(AMLOGIC_GPIOAO_EN_N_REG), 0,
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_AO(AMLOGIC_GPIOAO_OUT_REG), 16,
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_AO(AMLOGIC_GPIOAO_IN_REG), 0,
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_AO(AMLOGIC_GPIOAO_PUPD_EN_REG), 0,
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_AO(AMLOGIC_GPIOAO_PUPD_REG), 16 },
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{ "BOOT", 0x4ffff,
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_C(PREG_PAD_GPIO3_EN_N_REG), 0,
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_C(PREG_PAD_GPIO3_OUT_REG), 0,
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_C(PREG_PAD_GPIO3_IN_REG), 0,
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_C(PREG_PAD_GPIO3_PUPD_EN_REG), 0,
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_C(PREG_PAD_GPIO3_PUPD_REG), 0 },
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{ "CARD", 0x7f,
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_C(PREG_PAD_GPIO0_EN_N_REG), 22,
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_C(PREG_PAD_GPIO0_OUT_REG), 22,
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_C(PREG_PAD_GPIO0_IN_REG), 22,
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_C(PREG_PAD_GPIO0_PUPD_EN_REG), 20,
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_C(PREG_PAD_GPIO0_PUPD_REG), 20 }
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};
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#undef _C
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#undef _AO
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static int amlogic_gpio_match(device_t, cfdata_t, void *);
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static void amlogic_gpio_attach(device_t, device_t, void *);
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struct amlogic_gpio_softc;
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struct amlogic_gpio_group {
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struct amlogic_gpio_softc *grp_sc;
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const struct amlogic_gpio_pingrp *grp_pg;
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device_t grp_dev;
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struct gpio_chipset_tag grp_gc;
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gpio_pin_t grp_pins[32];
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};
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struct amlogic_gpio_softc {
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device_t sc_dev;
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bus_space_tag_t sc_bst;
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bus_space_handle_t sc_bsh;
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struct amlogic_gpio_group *sc_groups;
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};
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static void amlogic_gpio_attach_group(struct amlogic_gpio_softc *, u_int);
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static int amlogic_gpio_pin_read(void *, int);
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static void amlogic_gpio_pin_write(void *, int, int);
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static void amlogic_gpio_pin_ctl(void *, int, int);
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static int amlogic_gpio_cfprint(void *, const char *);
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CFATTACH_DECL_NEW(amlogic_gpio, sizeof(struct amlogic_gpio_softc),
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amlogic_gpio_match, amlogic_gpio_attach, NULL, NULL);
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#define GPIO_WRITE(sc, reg, val) \
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bus_space_write_4((sc)->sc_bst, (sc)->sc_bsh, (reg), (val))
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#define GPIO_READ(sc, reg) \
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bus_space_read_4((sc)->sc_bst, (sc)->sc_bsh, (reg))
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#define GPIO_SET_CLEAR(sc, reg, set, clr) \
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amlogic_reg_set_clear((sc)->sc_bst, (sc)->sc_bsh, \
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(reg), (set), (clr))
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static int
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amlogic_gpio_match(device_t parent, cfdata_t cf, void *aux)
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{
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return 1;
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}
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static void
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amlogic_gpio_attach(device_t parent, device_t self, void *aux)
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{
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struct amlogic_gpio_softc * const sc = device_private(self);
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struct amlogicio_attach_args * const aio = aux;
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u_int n;
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sc->sc_dev = self;
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sc->sc_bst = aio->aio_core_bst;
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sc->sc_bsh = aio->aio_bsh;
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aprint_naive("\n");
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aprint_normal(": GPIO controller\n");
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const u_int ngrp = __arraycount(amlogic_gpio_pingrps);
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sc->sc_groups = kmem_zalloc(sizeof(*sc->sc_groups) * ngrp, KM_SLEEP);
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for (n = 0; n < ngrp; n++) {
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amlogic_gpio_attach_group(sc, n);
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}
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}
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static void
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amlogic_gpio_attach_group(struct amlogic_gpio_softc *sc, u_int grpno)
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{
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struct amlogic_gpio_group *grp = &sc->sc_groups[grpno];
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struct gpiobus_attach_args gba;
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u_int pin;
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grp->grp_sc = sc;
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grp->grp_pg = &amlogic_gpio_pingrps[grpno];
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grp->grp_gc.gp_cookie = grp;
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grp->grp_gc.gp_pin_read = amlogic_gpio_pin_read;
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grp->grp_gc.gp_pin_write = amlogic_gpio_pin_write;
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grp->grp_gc.gp_pin_ctl = amlogic_gpio_pin_ctl;
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for (pin = 0; pin < __arraycount(grp->grp_pins); pin++) {
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grp->grp_pins[pin].pin_num = pin;
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if ((grp->grp_pg->mask & (1 << pin)) == 0)
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continue;
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grp->grp_pins[pin].pin_caps =
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GPIO_PIN_INPUT | GPIO_PIN_OUTPUT |
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GPIO_PIN_PUSHPULL | GPIO_PIN_TRISTATE |
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GPIO_PIN_PULLUP | GPIO_PIN_PULLDOWN;
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grp->grp_pins[pin].pin_state =
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amlogic_gpio_pin_read(grp, pin);
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}
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memset(&gba, 0, sizeof(gba));
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gba.gba_gc = &grp->grp_gc;
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gba.gba_pins = grp->grp_pins;
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gba.gba_npins = 32 - __builtin_clz(grp->grp_pg->mask);
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grp->grp_dev = config_found_ia(sc->sc_dev, "gpiobus", &gba,
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amlogic_gpio_cfprint);
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}
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static int
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amlogic_gpio_cfprint(void *priv, const char *pnp)
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{
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struct gpiobus_attach_args *gba = priv;
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struct amlogic_gpio_group *grp = gba->gba_gc->gp_cookie;
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const char *grpname = grp->grp_pg->name;
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if (pnp)
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aprint_normal("gpiobus at %s", pnp);
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aprint_normal(" (%s)", grpname);
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return UNCONF;
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}
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static int
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amlogic_gpio_pin_read(void *priv, int pin)
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{
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struct amlogic_gpio_group *grp = priv;
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struct amlogic_gpio_softc *sc = grp->grp_sc;
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const bus_size_t reg = grp->grp_pg->in_reg;
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const u_int shift = grp->grp_pg->in_shift;
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const uint32_t mask = grp->grp_pg->mask;
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const uint32_t v = (GPIO_READ(sc, reg) >> shift) & mask;
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return (v >> pin) & 1;
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}
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static void
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amlogic_gpio_pin_write(void *priv, int pin, int val)
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{
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struct amlogic_gpio_group *grp = priv;
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struct amlogic_gpio_softc *sc = grp->grp_sc;
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const bus_size_t reg = grp->grp_pg->out_reg;
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const u_int shift = grp->grp_pg->out_shift;
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const uint32_t mask = grp->grp_pg->mask;
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uint32_t v;
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KASSERT(mask & (1 << pin));
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v = GPIO_READ(sc, reg);
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if (val) {
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v |= ((1 << pin) << shift);
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} else {
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v &= ~((1 << pin) << shift);
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}
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GPIO_WRITE(sc, reg, v);
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}
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static void
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amlogic_gpio_pin_ctl(void *priv, int pin, int flags)
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{
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struct amlogic_gpio_group *grp = priv;
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struct amlogic_gpio_softc *sc = grp->grp_sc;
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const bus_size_t en_reg = grp->grp_pg->en_reg;
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const bus_size_t pupd_en_reg = grp->grp_pg->pupd_en_reg;
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const bus_size_t pupd_reg = grp->grp_pg->pupd_reg;
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const u_int en_shift = grp->grp_pg->en_shift;
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const u_int pupd_en_shift = grp->grp_pg->pupd_en_shift;
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const u_int pupd_shift = grp->grp_pg->pupd_shift;
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const uint32_t mask = grp->grp_pg->mask;
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uint32_t v, pupd_en, pupd;
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KASSERT(mask & (1 << pin));
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if (flags & GPIO_PIN_INPUT) {
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v = GPIO_READ(sc, en_reg);
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v |= ((1 << pin) << en_shift);
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GPIO_WRITE(sc, en_reg, v);
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} else if (flags & GPIO_PIN_OUTPUT) {
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v = GPIO_READ(sc, en_reg);
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v &= ~((1 << pin) << en_shift);
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GPIO_WRITE(sc, en_reg, v);
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}
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pupd_en = GPIO_READ(sc, pupd_en_reg);
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if (flags & (GPIO_PIN_PULLUP|GPIO_PIN_PULLDOWN)) {
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pupd = GPIO_READ(sc, pupd_reg);
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if (flags & GPIO_PIN_PULLUP) {
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pupd |= ((1 << pin) << pupd_shift);
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} else {
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pupd &= ~((1 << pin) << pupd_shift);
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}
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GPIO_WRITE(sc, pupd_reg, pupd);
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pupd_en |= ((1 << pin) << pupd_en_shift);
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} else {
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pupd_en &= ~((1 << pin) << pupd_en_shift);
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}
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GPIO_WRITE(sc, pupd_en_reg, pupd_en);
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}
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@ -1,4 +1,4 @@
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/* $NetBSD: amlogic_io.c,v 1.10 2015/04/19 18:54:52 jmcneill Exp $ */
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/* $NetBSD: amlogic_io.c,v 1.11 2015/04/25 14:41:33 jmcneill Exp $ */
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/*-
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* Copyright (c) 2015 Jared D. McNeill <jmcneill@invisible.ca>
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@ -29,7 +29,7 @@
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#include "opt_amlogic.h"
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: amlogic_io.c,v 1.10 2015/04/19 18:54:52 jmcneill Exp $");
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__KERNEL_RCSID(0, "$NetBSD: amlogic_io.c,v 1.11 2015/04/25 14:41:33 jmcneill Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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@ -63,6 +63,8 @@ static const struct amlogic_locators amlogic_locators[] = {
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AMLOGIC_UART0AO_OFFSET, AMLOGIC_UART_SIZE, 0, AMLOGIC_INTR_UART0AO },
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{ "amlogiccom",
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AMLOGIC_UART2AO_OFFSET, AMLOGIC_UART_SIZE, 2, AMLOGIC_INTR_UART2AO },
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{ "amlogicgpio",
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0, 0, NOPORT, NOINTR },
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{ "genfb",
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AMLOGIC_DMC_OFFSET, AMLOGIC_DMC_SIZE, NOPORT, NOINTR },
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{ "amlogicrng",
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@ -1,4 +1,4 @@
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/* $NetBSD: amlogic_reg.h,v 1.10 2015/03/22 17:28:22 jmcneill Exp $ */
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/* $NetBSD: amlogic_reg.h,v 1.11 2015/04/25 14:41:33 jmcneill Exp $ */
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/*-
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* Copyright (c) 2015 Jared D. McNeill <jmcneill@invisible.ca>
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@ -58,6 +58,12 @@
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#define AMLOGIC_AO_RTI_PIN_MUX_OFFSET 0x08100014
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#define AMLOGIC_GPIOAO_OFFSET 0x08100024
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#define AMLOGIC_GPIOAO_EN_N_REG 0x00 /* [15:0] */
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#define AMLOGIC_GPIOAO_OUT_REG 0x00 /* [31:16] */
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#define AMLOGIC_GPIOAO_IN_REG 0x04
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#define AMLOGIC_GPIOAO_PUPD_EN_REG 0x08 /* [15:0] */
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#define AMLOGIC_GPIOAO_PUPD_REG 0x08 /* [31:16] */
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#define AMLOGIC_UART0AO_OFFSET 0x081004c0
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#define AMLOGIC_UART2AO_OFFSET 0x081004e0
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#define AMLOGIC_UART_SIZE 0x20
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@ -1,4 +1,4 @@
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# $NetBSD: files.amlogic,v 1.11 2015/04/19 18:54:52 jmcneill Exp $
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# $NetBSD: files.amlogic,v 1.12 2015/04/25 14:41:33 jmcneill Exp $
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#
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# Configuration info for Amlogic ARM Peripherals
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#
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@ -26,6 +26,11 @@ device amlogiccom
|
||||
attach amlogiccom at amlogicio with amlogic_com
|
||||
file arch/arm/amlogic/amlogic_com.c amlogic_com needs-flag
|
||||
|
||||
# GPIO
|
||||
device amlogicgpio: gpiobus
|
||||
attach amlogicgpio at amlogicio with amlogic_gpio
|
||||
file arch/arm/amlogic/amlogic_gpio.c amlogic_gpio
|
||||
|
||||
# Framebuffer console
|
||||
attach genfb at amlogicio with amlogic_genfb
|
||||
file arch/arm/amlogic/amlogic_genfb.c amlogic_genfb needs-flag
|
||||
|
||||
@ -1,5 +1,5 @@
|
||||
#
|
||||
# $NetBSD: ODROID-C1,v 1.17 2015/04/17 18:36:15 jmcneill Exp $
|
||||
# $NetBSD: ODROID-C1,v 1.18 2015/04/25 14:41:33 jmcneill Exp $
|
||||
#
|
||||
# Hardkernel ODROID-C1 (Amlogic S805) based SBC (Single Board Computer)
|
||||
#
|
||||
@ -35,6 +35,10 @@ amlogicio0 at mainbus?
|
||||
amlogiccom0 at amlogicio0 port 0
|
||||
options CONSADDR=0xc81004c0, CONSPEED=115200
|
||||
|
||||
# GPIO
|
||||
amlogicgpio0 at amlogicio0
|
||||
gpio* at gpiobus?
|
||||
|
||||
# Framebuffer
|
||||
genfb0 at amlogicio0
|
||||
wsdisplay* at genfb?
|
||||
|
||||
Loading…
Reference in New Issue
Block a user