diff options
Diffstat (limited to 'qemu/hw/i2c/versatile_i2c.c')
-rw-r--r-- | qemu/hw/i2c/versatile_i2c.c | 114 |
1 files changed, 0 insertions, 114 deletions
diff --git a/qemu/hw/i2c/versatile_i2c.c b/qemu/hw/i2c/versatile_i2c.c deleted file mode 100644 index fee3bc761..000000000 --- a/qemu/hw/i2c/versatile_i2c.c +++ /dev/null @@ -1,114 +0,0 @@ -/* - * ARM Versatile I2C controller - * - * Copyright (c) 2006-2007 CodeSourcery. - * Copyright (c) 2012 Oskar Andero <oskar.andero@gmail.com> - * - * This file is derived from hw/realview.c by Paul Brook - * - * 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 - * of the License, or (at your option) any later version. - * - * 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/>. - * - */ - -#include "qemu/osdep.h" -#include "hw/sysbus.h" -#include "bitbang_i2c.h" - -#define TYPE_VERSATILE_I2C "versatile_i2c" -#define VERSATILE_I2C(obj) \ - OBJECT_CHECK(VersatileI2CState, (obj), TYPE_VERSATILE_I2C) - -typedef struct VersatileI2CState { - SysBusDevice parent_obj; - - MemoryRegion iomem; - bitbang_i2c_interface *bitbang; - int out; - int in; -} VersatileI2CState; - -static uint64_t versatile_i2c_read(void *opaque, hwaddr offset, - unsigned size) -{ - VersatileI2CState *s = (VersatileI2CState *)opaque; - - if (offset == 0) { - return (s->out & 1) | (s->in << 1); - } else { - qemu_log_mask(LOG_GUEST_ERROR, - "%s: Bad offset 0x%x\n", __func__, (int)offset); - return -1; - } -} - -static void versatile_i2c_write(void *opaque, hwaddr offset, - uint64_t value, unsigned size) -{ - VersatileI2CState *s = (VersatileI2CState *)opaque; - - switch (offset) { - case 0: - s->out |= value & 3; - break; - case 4: - s->out &= ~value; - break; - default: - qemu_log_mask(LOG_GUEST_ERROR, - "%s: Bad offset 0x%x\n", __func__, (int)offset); - } - bitbang_i2c_set(s->bitbang, BITBANG_I2C_SCL, (s->out & 1) != 0); - s->in = bitbang_i2c_set(s->bitbang, BITBANG_I2C_SDA, (s->out & 2) != 0); -} - -static const MemoryRegionOps versatile_i2c_ops = { - .read = versatile_i2c_read, - .write = versatile_i2c_write, - .endianness = DEVICE_NATIVE_ENDIAN, -}; - -static int versatile_i2c_init(SysBusDevice *sbd) -{ - DeviceState *dev = DEVICE(sbd); - VersatileI2CState *s = VERSATILE_I2C(dev); - I2CBus *bus; - - bus = i2c_init_bus(dev, "i2c"); - s->bitbang = bitbang_i2c_init(bus); - memory_region_init_io(&s->iomem, OBJECT(s), &versatile_i2c_ops, s, - "versatile_i2c", 0x1000); - sysbus_init_mmio(sbd, &s->iomem); - return 0; -} - -static void versatile_i2c_class_init(ObjectClass *klass, void *data) -{ - SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); - - k->init = versatile_i2c_init; -} - -static const TypeInfo versatile_i2c_info = { - .name = TYPE_VERSATILE_I2C, - .parent = TYPE_SYS_BUS_DEVICE, - .instance_size = sizeof(VersatileI2CState), - .class_init = versatile_i2c_class_init, -}; - -static void versatile_i2c_register_types(void) -{ - type_register_static(&versatile_i2c_info); -} - -type_init(versatile_i2c_register_types) |