1 files changed, 137 insertions, 0 deletions
diff --git a/drivers/staging/iio/adc/ad799x.h b/drivers/staging/iio/adc/ad799x.h
new file mode 100644
index 00000000..b51680c1
--- /dev/null
+++ b/drivers/staging/iio/adc/ad799x.h
@@ -0,0 +1,137 @@
+/*
+ * Copyright (C) 2010-2011 Michael Hennerich, Analog Devices Inc.
+ * Copyright (C) 2008-2010 Jonathan Cameron
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * ad799x.h
+ */
+
+#ifndef _AD799X_H_
+#define  _AD799X_H_
+
+#define AD799X_CHANNEL_SHIFT			4
+#define AD799X_STORAGEBITS			16
+/*
+ * AD7991, AD7995 and AD7999 defines
+ */
+
+#define AD7991_REF_SEL				0x08
+#define AD7991_FLTR				0x04
+#define AD7991_BIT_TRIAL_DELAY			0x02
+#define AD7991_SAMPLE_DELAY			0x01
+
+/*
+ * AD7992, AD7993, AD7994, AD7997 and AD7998 defines
+ */
+
+#define AD7998_FLTR				0x08
+#define AD7998_ALERT_EN				0x04
+#define AD7998_BUSY_ALERT			0x02
+#define AD7998_BUSY_ALERT_POL			0x01
+
+#define AD7998_CONV_RES_REG			0x0
+#define AD7998_ALERT_STAT_REG			0x1
+#define AD7998_CONF_REG				0x2
+#define AD7998_CYCLE_TMR_REG			0x3
+#define AD7998_DATALOW_CH1_REG			0x4
+#define AD7998_DATAHIGH_CH1_REG			0x5
+#define AD7998_HYST_CH1_REG			0x6
+#define AD7998_DATALOW_CH2_REG			0x7
+#define AD7998_DATAHIGH_CH2_REG			0x8
+#define AD7998_HYST_CH2_REG			0x9
+#define AD7998_DATALOW_CH3_REG			0xA
+#define AD7998_DATAHIGH_CH3_REG			0xB
+#define AD7998_HYST_CH3_REG			0xC
+#define AD7998_DATALOW_CH4_REG			0xD
+#define AD7998_DATAHIGH_CH4_REG			0xE
+#define AD7998_HYST_CH4_REG			0xF
+
+#define AD7998_CYC_MASK				0x7
+#define AD7998_CYC_DIS				0x0
+#define AD7998_CYC_TCONF_32			0x1
+#define AD7998_CYC_TCONF_64			0x2
+#define AD7998_CYC_TCONF_128			0x3
+#define AD7998_CYC_TCONF_256			0x4
+#define AD7998_CYC_TCONF_512			0x5
+#define AD7998_CYC_TCONF_1024			0x6
+#define AD7998_CYC_TCONF_2048			0x7
+
+#define AD7998_ALERT_STAT_CLEAR			0xFF
+
+/*
+ * AD7997 and AD7997 defines
+ */
+
+#define AD7997_8_READ_SINGLE			0x80
+#define AD7997_8_READ_SEQUENCE			0x70
+/* TODO: move this into a common header */
+#define RES_MASK(bits)	((1 << (bits)) - 1)
+
+enum {
+	ad7991,
+	ad7995,
+	ad7999,
+	ad7992,
+	ad7993,
+	ad7994,
+	ad7997,
+	ad7998
+};
+
+struct ad799x_state;
+
+/**
+ * struct ad799x_chip_info - chip specifc information
+ * @channel:		channel specification
+ * @num_channels:	number of channels
+ * @monitor_mode:	whether the chip supports monitor interrupts
+ * @default_config:	device default configuration
+ * @event_attrs:	pointer to the monitor event attribute group
+ */
+
+struct ad799x_chip_info {
+	struct iio_chan_spec		channel[9];
+	int				num_channels;
+	u16				default_config;
+	const struct iio_info		*info;
+};
+
+struct ad799x_state {
+	struct i2c_client		*client;
+	const struct ad799x_chip_info	*chip_info;
+	struct regulator		*reg;
+	u16				int_vref_mv;
+	unsigned			id;
+	u16				config;
+
+	u8				*rx_buf;
+	unsigned int			transfer_size;
+};
+
+/*
+ * TODO: struct ad799x_platform_data needs to go into include/linux/iio
+ */
+
+struct ad799x_platform_data {
+	u16				vref_mv;
+};
+
+#ifdef CONFIG_AD799X_RING_BUFFER
+int ad799x_register_ring_funcs_and_init(struct iio_dev *indio_dev);
+void ad799x_ring_cleanup(struct iio_dev *indio_dev);
+#else /* CONFIG_AD799X_RING_BUFFER */
+
+static inline int
+ad799x_register_ring_funcs_and_init(struct iio_dev *indio_dev)
+{
+	return 0;
+}
+
+static inline void ad799x_ring_cleanup(struct iio_dev *indio_dev)
+{
+}
+#endif /* CONFIG_AD799X_RING_BUFFER */
+#endif /* _AD799X_H_ */