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-rw-r--r--drivers/iio/dac/ad5446.h91
1 files changed, 91 insertions, 0 deletions
diff --git a/drivers/iio/dac/ad5446.h b/drivers/iio/dac/ad5446.h
new file mode 100644
index 00000000000..2934269a56d
--- /dev/null
+++ b/drivers/iio/dac/ad5446.h
@@ -0,0 +1,91 @@
+/*
+ * AD5446 SPI DAC driver
+ *
+ * Copyright 2010 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+#ifndef IIO_DAC_AD5446_H_
+#define IIO_DAC_AD5446_H_
+
+/* DAC Control Bits */
+
+#define AD5446_LOAD (0x0 << 14) /* Load and update */
+#define AD5446_SDO_DIS (0x1 << 14) /* Disable SDO */
+#define AD5446_NOP (0x2 << 14) /* No operation */
+#define AD5446_CLK_RISING (0x3 << 14) /* Clock data on rising edge */
+
+#define AD5620_LOAD (0x0 << 14) /* Load and update Norm Operation*/
+#define AD5620_PWRDWN_1k (0x1 << 14) /* Power-down: 1kOhm to GND */
+#define AD5620_PWRDWN_100k (0x2 << 14) /* Power-down: 100kOhm to GND */
+#define AD5620_PWRDWN_TRISTATE (0x3 << 14) /* Power-down: Three-state */
+
+#define AD5660_LOAD (0x0 << 16) /* Load and update Norm Operation*/
+#define AD5660_PWRDWN_1k (0x1 << 16) /* Power-down: 1kOhm to GND */
+#define AD5660_PWRDWN_100k (0x2 << 16) /* Power-down: 100kOhm to GND */
+#define AD5660_PWRDWN_TRISTATE (0x3 << 16) /* Power-down: Three-state */
+
+#define MODE_PWRDWN_1k 0x1
+#define MODE_PWRDWN_100k 0x2
+#define MODE_PWRDWN_TRISTATE 0x3
+
+/**
+ * struct ad5446_state - driver instance specific data
+ * @spi: spi_device
+ * @chip_info: chip model specific constants, available modes etc
+ * @reg: supply regulator
+ * @vref_mv: actual reference voltage used
+ */
+
+struct ad5446_state {
+ struct spi_device *spi;
+ const struct ad5446_chip_info *chip_info;
+ struct regulator *reg;
+ unsigned short vref_mv;
+ unsigned cached_val;
+ unsigned pwr_down_mode;
+ unsigned pwr_down;
+};
+
+/**
+ * struct ad5446_chip_info - chip specific information
+ * @channel: channel spec for the DAC
+ * @int_vref_mv: AD5620/40/60: the internal reference voltage
+ * @write: chip specific helper function to write to the register
+ */
+
+struct ad5446_chip_info {
+ struct iio_chan_spec channel;
+ u16 int_vref_mv;
+ int (*write)(struct ad5446_state *st, unsigned val);
+};
+
+/**
+ * ad5446_supported_device_ids:
+ * The AD5620/40/60 parts are available in different fixed internal reference
+ * voltage options. The actual part numbers may look differently
+ * (and a bit cryptic), however this style is used to make clear which
+ * parts are supported here.
+ */
+
+enum ad5446_supported_device_ids {
+ ID_AD5444,
+ ID_AD5446,
+ ID_AD5450,
+ ID_AD5451,
+ ID_AD5541A,
+ ID_AD5512A,
+ ID_AD5553,
+ ID_AD5601,
+ ID_AD5611,
+ ID_AD5621,
+ ID_AD5620_2500,
+ ID_AD5620_1250,
+ ID_AD5640_2500,
+ ID_AD5640_1250,
+ ID_AD5660_2500,
+ ID_AD5660_1250,
+ ID_AD5662,
+};
+
+#endif /* IIO_DAC_AD5446_H_ */