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Diffstat (limited to 'qemu/hw/misc/max111x.c')
-rw-r--r--qemu/hw/misc/max111x.c215
1 files changed, 0 insertions, 215 deletions
diff --git a/qemu/hw/misc/max111x.c b/qemu/hw/misc/max111x.c
deleted file mode 100644
index 9014f0f70..000000000
--- a/qemu/hw/misc/max111x.c
+++ /dev/null
@@ -1,215 +0,0 @@
-/*
- * Maxim MAX1110/1111 ADC chip emulation.
- *
- * Copyright (c) 2006 Openedhand Ltd.
- * Written by Andrzej Zaborowski <balrog@zabor.org>
- *
- * This code is licensed under the GNU GPLv2.
- *
- * Contributions after 2012-01-13 are licensed under the terms of the
- * GNU GPL, version 2 or (at your option) any later version.
- */
-
-#include "qemu/osdep.h"
-#include "hw/ssi/ssi.h"
-
-typedef struct {
- SSISlave parent_obj;
-
- qemu_irq interrupt;
- uint8_t tb1, rb2, rb3;
- int cycle;
-
- uint8_t input[8];
- int inputs, com;
-} MAX111xState;
-
-#define TYPE_MAX_111X "max111x"
-
-#define MAX_111X(obj) \
- OBJECT_CHECK(MAX111xState, (obj), TYPE_MAX_111X)
-
-#define TYPE_MAX_1110 "max1110"
-#define TYPE_MAX_1111 "max1111"
-
-/* Control-byte bitfields */
-#define CB_PD0 (1 << 0)
-#define CB_PD1 (1 << 1)
-#define CB_SGL (1 << 2)
-#define CB_UNI (1 << 3)
-#define CB_SEL0 (1 << 4)
-#define CB_SEL1 (1 << 5)
-#define CB_SEL2 (1 << 6)
-#define CB_START (1 << 7)
-
-#define CHANNEL_NUM(v, b0, b1, b2) \
- ((((v) >> (2 + (b0))) & 4) | \
- (((v) >> (3 + (b1))) & 2) | \
- (((v) >> (4 + (b2))) & 1))
-
-static uint32_t max111x_read(MAX111xState *s)
-{
- if (!s->tb1)
- return 0;
-
- switch (s->cycle ++) {
- case 1:
- return s->rb2;
- case 2:
- return s->rb3;
- }
-
- return 0;
-}
-
-/* Interpret a control-byte */
-static void max111x_write(MAX111xState *s, uint32_t value)
-{
- int measure, chan;
-
- /* Ignore the value if START bit is zero */
- if (!(value & CB_START))
- return;
-
- s->cycle = 0;
-
- if (!(value & CB_PD1)) {
- s->tb1 = 0;
- return;
- }
-
- s->tb1 = value;
-
- if (s->inputs == 8)
- chan = CHANNEL_NUM(value, 1, 0, 2);
- else
- chan = CHANNEL_NUM(value & ~CB_SEL0, 0, 1, 2);
-
- if (value & CB_SGL)
- measure = s->input[chan] - s->com;
- else
- measure = s->input[chan] - s->input[chan ^ 1];
-
- if (!(value & CB_UNI))
- measure ^= 0x80;
-
- s->rb2 = (measure >> 2) & 0x3f;
- s->rb3 = (measure << 6) & 0xc0;
-
- /* FIXME: When should the IRQ be lowered? */
- qemu_irq_raise(s->interrupt);
-}
-
-static uint32_t max111x_transfer(SSISlave *dev, uint32_t value)
-{
- MAX111xState *s = MAX_111X(dev);
- max111x_write(s, value);
- return max111x_read(s);
-}
-
-static const VMStateDescription vmstate_max111x = {
- .name = "max111x",
- .version_id = 1,
- .minimum_version_id = 1,
- .fields = (VMStateField[]) {
- VMSTATE_SSI_SLAVE(parent_obj, MAX111xState),
- VMSTATE_UINT8(tb1, MAX111xState),
- VMSTATE_UINT8(rb2, MAX111xState),
- VMSTATE_UINT8(rb3, MAX111xState),
- VMSTATE_INT32_EQUAL(inputs, MAX111xState),
- VMSTATE_INT32(com, MAX111xState),
- VMSTATE_ARRAY_INT32_UNSAFE(input, MAX111xState, inputs,
- vmstate_info_uint8, uint8_t),
- VMSTATE_END_OF_LIST()
- }
-};
-
-static int max111x_init(SSISlave *d, int inputs)
-{
- DeviceState *dev = DEVICE(d);
- MAX111xState *s = MAX_111X(dev);
-
- qdev_init_gpio_out(dev, &s->interrupt, 1);
-
- s->inputs = inputs;
- /* TODO: add a user interface for setting these */
- s->input[0] = 0xf0;
- s->input[1] = 0xe0;
- s->input[2] = 0xd0;
- s->input[3] = 0xc0;
- s->input[4] = 0xb0;
- s->input[5] = 0xa0;
- s->input[6] = 0x90;
- s->input[7] = 0x80;
- s->com = 0;
-
- vmstate_register(dev, -1, &vmstate_max111x, s);
- return 0;
-}
-
-static int max1110_init(SSISlave *dev)
-{
- return max111x_init(dev, 8);
-}
-
-static int max1111_init(SSISlave *dev)
-{
- return max111x_init(dev, 4);
-}
-
-void max111x_set_input(DeviceState *dev, int line, uint8_t value)
-{
- MAX111xState *s = MAX_111X(dev);
- assert(line >= 0 && line < s->inputs);
- s->input[line] = value;
-}
-
-static void max111x_class_init(ObjectClass *klass, void *data)
-{
- SSISlaveClass *k = SSI_SLAVE_CLASS(klass);
-
- k->transfer = max111x_transfer;
-}
-
-static const TypeInfo max111x_info = {
- .name = TYPE_MAX_111X,
- .parent = TYPE_SSI_SLAVE,
- .instance_size = sizeof(MAX111xState),
- .class_init = max111x_class_init,
- .abstract = true,
-};
-
-static void max1110_class_init(ObjectClass *klass, void *data)
-{
- SSISlaveClass *k = SSI_SLAVE_CLASS(klass);
-
- k->init = max1110_init;
-}
-
-static const TypeInfo max1110_info = {
- .name = TYPE_MAX_1110,
- .parent = TYPE_MAX_111X,
- .class_init = max1110_class_init,
-};
-
-static void max1111_class_init(ObjectClass *klass, void *data)
-{
- SSISlaveClass *k = SSI_SLAVE_CLASS(klass);
-
- k->init = max1111_init;
-}
-
-static const TypeInfo max1111_info = {
- .name = TYPE_MAX_1111,
- .parent = TYPE_MAX_111X,
- .class_init = max1111_class_init,
-};
-
-static void max111x_register_types(void)
-{
- type_register_static(&max111x_info);
- type_register_static(&max1110_info);
- type_register_static(&max1111_info);
-}
-
-type_init(max111x_register_types)