1 files changed, 56 insertions, 0 deletions
diff --git a/include/hw/misc/max111x.h b/include/hw/misc/max111x.h
new file mode 100644
index 0000000..af7f101
--- /dev/null
+++ b/include/hw/misc/max111x.h
@@ -0,0 +1,56 @@
+/*
+ * 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.
+ */
+
+#ifndef HW_MISC_MAX111X_H
+#define HW_MISC_MAX111X_H
+
+#include "hw/ssi/ssi.h"
+
+/*
+ * This is a model of the Maxim MAX1110/1111 ADC chip, which for QEMU
+ * is an SSI slave device. It has either 4 (max1110) or 8 (max1111)
+ * 8-bit ADC channels.
+ *
+ * QEMU interface:
+ *  + GPIO inputs 0..3 (for max1110) or 0..7 (for max1111): set the value
+ *    of each ADC input, as an unsigned 8-bit value
+ *  + GPIO output 0: interrupt line
+ *  + Properties "input0" to "input3" (max1110) or "input0" to "input7"
+ *    (max1111): initial reset values for ADC inputs.
+ *
+ * Known bugs:
+ *  + the interrupt line is not correctly implemented, and will never
+ *    be lowered once it has been asserted.
+ */
+typedef struct {
+    SSISlave parent_obj;
+
+    qemu_irq interrupt;
+    /* Values of inputs at system reset (settable by QOM property) */
+    uint8_t reset_input[8];
+
+    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"
+
+#endif