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authorCorey Minyard <cminyard@mvista.com>2021-05-18 15:54:52 -0500
committerCorey Minyard <cminyard@mvista.com>2021-06-17 07:10:32 -0500
commit58f3e3fe69a66a5c27675faf3e7afa52e027e621 (patch)
treed7c4338e970f4911b123b6aa51b247a5a33f600f /include/hw/adc
parent246f530cdb5a93b5da6db2c2fb00549b4081d943 (diff)
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adc: Move the max111x driver to the adc directory
It's an adc, put it where it belongs. Cc: Andrzej Zaborowski <balrogg@gmail.com> Cc: Peter Maydell <peter.maydell@linaro.org> Cc: qemu-arm@nongnu.org Signed-off-by: Corey Minyard <cminyard@mvista.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Diffstat (limited to 'include/hw/adc')
-rw-r--r--include/hw/adc/max111x.h56
1 files changed, 56 insertions, 0 deletions
diff --git a/include/hw/adc/max111x.h b/include/hw/adc/max111x.h
new file mode 100644
index 0000000..beff59c
--- /dev/null
+++ b/include/hw/adc/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"
+#include "qom/object.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.
+ */
+struct MAX111xState {
+ SSIPeripheral 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;
+};
+
+#define TYPE_MAX_111X "max111x"
+
+OBJECT_DECLARE_SIMPLE_TYPE(MAX111xState, MAX_111X)
+
+#define TYPE_MAX_1110 "max1110"
+#define TYPE_MAX_1111 "max1111"
+
+#endif