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bcm2835_gpio: add bcm2835 gpio controller

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This adds the BCM2835 GPIO controller.

It currently implements:
- The 54 GPIOs as outputs (qemu_irq)
- The SD controller selection via alternate function of GPIOs 48-53

Signed-off-by: Clement Deschamps <clement.deschamps@antfield.fr>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1488293711-14195-4-git-send-email-peter.maydell@linaro.org
Message-id: 20170224164021.9066-4-clement.deschamps@antfield.fr
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Clement Deschamps 2017-02-28 14:55:10 +00:00 • committed by Peter Maydell
parent 97fb87cc5d
commit d72fc9dcb1
3 changed files with 393 additions and 0 deletions
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39
include/hw/gpio/bcm2835_gpio.h Normal file
View file

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/*
* Raspberry Pi (BCM2835) GPIO Controller
*
* Copyright (c) 2017 Antfield SAS
*
* Authors:
* Clement Deschamps <clement.deschamps@antfield.fr>
* Luc Michel <luc.michel@antfield.fr>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#ifndef BCM2835_GPIO_H
#define BCM2835_GPIO_H
#include "hw/sd/sd.h"
typedef struct BCM2835GpioState {
SysBusDevice parent_obj;
MemoryRegion iomem;
/* SDBus selector */
SDBus sdbus;
SDBus *sdbus_sdhci;
SDBus *sdbus_sdhost;
uint8_t fsel[54];
uint32_t lev0, lev1;
uint8_t sd_fsel;
qemu_irq out[54];
} BCM2835GpioState;
#define TYPE_BCM2835_GPIO "bcm2835_gpio"
#define BCM2835_GPIO(obj) \
OBJECT_CHECK(BCM2835GpioState, (obj), TYPE_BCM2835_GPIO)
#endif