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i.MX: Add GPIO device

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Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-id: 5ea3b0021e47cf7f7d883a7edbabee44980f3df7.1441828793.git.jcd@tribudubois.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Jean-Christophe Dubois 2015-09-14 14:39:49 +01:00 • committed by Peter Maydell
parent 7cb36e18b2
commit f442728097
3 changed files with 403 additions and 0 deletions
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62
include/hw/gpio/imx_gpio.h Normal file
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/*
* i.MX processors GPIO registers definition.
*
* Copyright (C) 2015 Jean-Christophe Dubois <jcd@tribudubois.net>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 or
* (at your option) version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __IMX_GPIO_H_
#define __IMX_GPIO_H_
#include <hw/sysbus.h>
#define TYPE_IMX_GPIO "imx.gpio"
#define IMX_GPIO(obj) OBJECT_CHECK(IMXGPIOState, (obj), TYPE_IMX_GPIO)
#define IMX_GPIO_MEM_SIZE 0x20
/* i.MX GPIO memory map */
#define DR_ADDR 0x00 /* DATA REGISTER */
#define GDIR_ADDR 0x04 /* DIRECTION REGISTER */
#define PSR_ADDR 0x08 /* PAD STATUS REGISTER */
#define ICR1_ADDR 0x0c /* INTERRUPT CONFIGURATION REGISTER 1 */
#define ICR2_ADDR 0x10 /* INTERRUPT CONFIGURATION REGISTER 2 */
#define IMR_ADDR 0x14 /* INTERRUPT MASK REGISTER */
#define ISR_ADDR 0x18 /* INTERRUPT STATUS REGISTER */
#define EDGE_SEL_ADDR 0x1c /* EDGE SEL REGISTER */
#define IMX_GPIO_PIN_COUNT 32
typedef struct IMXGPIOState {
/*< private >*/
SysBusDevice parent_obj;
/*< public >*/
MemoryRegion iomem;
uint32_t dr;
uint32_t gdir;
uint32_t psr;
uint64_t icr;
uint32_t imr;
uint32_t isr;
bool has_edge_sel;
uint32_t edge_sel;
qemu_irq irq;
qemu_irq output[IMX_GPIO_PIN_COUNT];
} IMXGPIOState;
#endif /* __IMX_GPIO_H_ */