S: Supported
W: https://ez.analog.com/linux-software-drivers
F: Documentation/devicetree/bindings/iio/dac/adi,ad5446.yaml
+F: drivers/iio/dac/ad5446-i2c.c
+F: drivers/iio/dac/ad5446-spi.c
+F: drivers/iio/dac/ad5446.c
+F: drivers/iio/dac/ad5446.h
AD714X CAPACITANCE TOUCH SENSOR DRIVER (AD7142/3/7/8/7A)
M: Michael Hennerich <michael.hennerich@analog.com>
ad5421.
config AD5446
- tristate "Analog Devices AD5446 and similar single channel DACs driver"
- depends on (SPI_MASTER && I2C!=m) || I2C
+ tristate
+
+config AD5446_SPI
+ tristate "Analog Devices AD5446 and similar single channel DACs driver (SPI)"
+ depends on SPI
+ select AD5446
+ help
+ Say yes here to build support for Analog Devices AD5300, AD5310,
+ AD5320, AD5444, AD5446, AD5450, AD5451, AD5452, AD5453, AD5512A,
+ AD5541A, AD5542A, AD5543, AD5553, AD5600, AD5601, AD5611, AD5620,
+ AD5621, AD5640, AD5641, AD5660, AD5662 DACs as well as
+ Texas Instruments DAC081S101, DAC101S101, DAC121S101.
+
+ To compile this driver as a module, choose M here: the
+ module will be called ad5446-spi.
+
+config AD5446_I2C
+ tristate "Analog Devices AD5446 and similar single channel DACs driver (I2C)"
+ depends on I2C
+ select AD5446
help
- Say yes here to build support for Analog Devices AD5300, AD5301, AD5310,
- AD5311, AD5320, AD5321, AD5444, AD5446, AD5450, AD5451, AD5452, AD5453,
- AD5512A, AD5541A, AD5542A, AD5543, AD5553, AD5600, AD5601, AD5602, AD5611,
- AD5612, AD5620, AD5621, AD5622, AD5640, AD5641, AD5660, AD5662 DACs
- as well as Texas Instruments DAC081S101, DAC101S101, DAC121S101.
+ Say yes here to build support for Analog Devices AD5301, AD5311, AD5321,
+ AD5602, AD5612, AD5622 DACs.
To compile this driver as a module, choose M here: the
- module will be called ad5446.
+ module will be called ad5446-i2c.
config AD5449
tristate "Analog Devices AD5449 and similar DACs driver"
obj-$(CONFIG_AD5064) += ad5064.o
obj-$(CONFIG_AD5504) += ad5504.o
obj-$(CONFIG_AD5446) += ad5446.o
+obj-$(CONFIG_AD5446_SPI) += ad5446-spi.o
+obj-$(CONFIG_AD5446_I2C) += ad5446-i2c.o
obj-$(CONFIG_AD5449) += ad5449.o
obj-$(CONFIG_AD5592R_BASE) += ad5592r-base.o
obj-$(CONFIG_AD5592R) += ad5592r.o
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * AD5446 SPI I2C driver
+ *
+ * Copyright 2025 Analog Devices Inc.
+ */
+#include <linux/err.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/i2c.h>
+
+#include <asm/byteorder.h>
+
+#include "ad5446.h"
+
+static int ad5622_write(struct ad5446_state *st, unsigned int val)
+{
+ struct i2c_client *client = to_i2c_client(st->dev);
+ int ret;
+
+ st->d16 = cpu_to_be16(val);
+
+ ret = i2c_master_send_dmasafe(client, (char *)&st->d16, sizeof(st->d16));
+ if (ret < 0)
+ return ret;
+ if (ret != sizeof(st->d16))
+ return -EIO;
+
+ return 0;
+}
+
+static int ad5446_i2c_probe(struct i2c_client *i2c)
+{
+ const struct i2c_device_id *id = i2c_client_get_device_id(i2c);
+ const struct ad5446_chip_info *chip_info;
+
+ chip_info = i2c_get_match_data(i2c);
+ if (!chip_info)
+ return -ENODEV;
+
+ return ad5446_probe(&i2c->dev, id->name, chip_info);
+}
+
+/*
+ * ad5446_supported_i2c_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.
+ */
+
+static const struct ad5446_chip_info ad5602_chip_info = {
+ .channel = AD5446_CHANNEL_POWERDOWN(8, 16, 4),
+ .write = ad5622_write,
+};
+
+static const struct ad5446_chip_info ad5612_chip_info = {
+ .channel = AD5446_CHANNEL_POWERDOWN(10, 16, 2),
+ .write = ad5622_write,
+};
+
+static const struct ad5446_chip_info ad5622_chip_info = {
+ .channel = AD5446_CHANNEL_POWERDOWN(12, 16, 0),
+ .write = ad5622_write,
+};
+
+static const struct i2c_device_id ad5446_i2c_ids[] = {
+ {"ad5301", (kernel_ulong_t)&ad5602_chip_info},
+ {"ad5311", (kernel_ulong_t)&ad5612_chip_info},
+ {"ad5321", (kernel_ulong_t)&ad5622_chip_info},
+ {"ad5602", (kernel_ulong_t)&ad5602_chip_info},
+ {"ad5612", (kernel_ulong_t)&ad5612_chip_info},
+ {"ad5622", (kernel_ulong_t)&ad5622_chip_info},
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, ad5446_i2c_ids);
+
+static const struct of_device_id ad5446_i2c_of_ids[] = {
+ { .compatible = "adi,ad5301", .data = &ad5602_chip_info },
+ { .compatible = "adi,ad5311", .data = &ad5612_chip_info },
+ { .compatible = "adi,ad5321", .data = &ad5622_chip_info },
+ { .compatible = "adi,ad5602", .data = &ad5602_chip_info },
+ { .compatible = "adi,ad5612", .data = &ad5612_chip_info },
+ { .compatible = "adi,ad5622", .data = &ad5622_chip_info },
+ { }
+};
+MODULE_DEVICE_TABLE(OF, ad5446_i2c_of_ids);
+
+static struct i2c_driver ad5446_i2c_driver = {
+ .driver = {
+ .name = "ad5446",
+ .of_match_table = ad5446_i2c_of_ids,
+ },
+ .probe = ad5446_i2c_probe,
+ .id_table = ad5446_i2c_ids,
+};
+module_i2c_driver(ad5446_i2c_driver);
+
+MODULE_AUTHOR("Nuno Sá <nuno.sa@analog.com>");
+MODULE_DESCRIPTION("Analog Devices AD5622 and similar I2C DACs");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS("IIO_AD5446");
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * AD5446 SPI DAC driver
+ *
+ * Copyright 2025 Analog Devices Inc.
+ */
+#include <linux/err.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/spi/spi.h>
+#include <linux/unaligned.h>
+
+#include <asm/byteorder.h>
+
+#include "ad5446.h"
+
+static int ad5446_write(struct ad5446_state *st, unsigned int val)
+{
+ struct spi_device *spi = to_spi_device(st->dev);
+
+ st->d16 = cpu_to_be16(val);
+
+ return spi_write(spi, &st->d16, sizeof(st->d16));
+}
+
+static int ad5660_write(struct ad5446_state *st, unsigned int val)
+{
+ struct spi_device *spi = to_spi_device(st->dev);
+
+ put_unaligned_be24(val, st->d24);
+
+ return spi_write(spi, st->d24, sizeof(st->d24));
+}
+
+static int ad5446_spi_probe(struct spi_device *spi)
+{
+ const struct spi_device_id *id = spi_get_device_id(spi);
+ const struct ad5446_chip_info *chip_info;
+
+ chip_info = spi_get_device_match_data(spi);
+ if (!chip_info)
+ return -ENODEV;
+
+ return ad5446_probe(&spi->dev, id->name, chip_info);
+}
+
+/*
+ * ad5446_supported_spi_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.
+ */
+
+static const struct ad5446_chip_info ad5300_chip_info = {
+ .channel = AD5446_CHANNEL_POWERDOWN(8, 16, 4),
+ .write = ad5446_write,
+};
+
+static const struct ad5446_chip_info ad5310_chip_info = {
+ .channel = AD5446_CHANNEL_POWERDOWN(10, 16, 2),
+ .write = ad5446_write,
+};
+
+static const struct ad5446_chip_info ad5320_chip_info = {
+ .channel = AD5446_CHANNEL_POWERDOWN(12, 16, 0),
+ .write = ad5446_write,
+};
+
+static const struct ad5446_chip_info ad5444_chip_info = {
+ .channel = AD5446_CHANNEL(12, 16, 2),
+ .write = ad5446_write,
+};
+
+static const struct ad5446_chip_info ad5446_chip_info = {
+ .channel = AD5446_CHANNEL(14, 16, 0),
+ .write = ad5446_write,
+};
+
+static const struct ad5446_chip_info ad5450_chip_info = {
+ .channel = AD5446_CHANNEL(8, 16, 6),
+ .write = ad5446_write,
+};
+
+static const struct ad5446_chip_info ad5451_chip_info = {
+ .channel = AD5446_CHANNEL(10, 16, 4),
+ .write = ad5446_write,
+};
+
+static const struct ad5446_chip_info ad5541a_chip_info = {
+ .channel = AD5446_CHANNEL(16, 16, 0),
+ .write = ad5446_write,
+};
+
+static const struct ad5446_chip_info ad5512a_chip_info = {
+ .channel = AD5446_CHANNEL(12, 16, 4),
+ .write = ad5446_write,
+};
+
+static const struct ad5446_chip_info ad5553_chip_info = {
+ .channel = AD5446_CHANNEL(14, 16, 0),
+ .write = ad5446_write,
+};
+
+static const struct ad5446_chip_info ad5601_chip_info = {
+ .channel = AD5446_CHANNEL_POWERDOWN(8, 16, 6),
+ .write = ad5446_write,
+};
+
+static const struct ad5446_chip_info ad5611_chip_info = {
+ .channel = AD5446_CHANNEL_POWERDOWN(10, 16, 4),
+ .write = ad5446_write,
+};
+
+static const struct ad5446_chip_info ad5621_chip_info = {
+ .channel = AD5446_CHANNEL_POWERDOWN(12, 16, 2),
+ .write = ad5446_write,
+};
+
+static const struct ad5446_chip_info ad5641_chip_info = {
+ .channel = AD5446_CHANNEL_POWERDOWN(14, 16, 0),
+ .write = ad5446_write,
+};
+
+static const struct ad5446_chip_info ad5620_2500_chip_info = {
+ .channel = AD5446_CHANNEL_POWERDOWN(12, 16, 2),
+ .int_vref_mv = 2500,
+ .write = ad5446_write,
+};
+
+static const struct ad5446_chip_info ad5620_1250_chip_info = {
+ .channel = AD5446_CHANNEL_POWERDOWN(12, 16, 2),
+ .int_vref_mv = 1250,
+ .write = ad5446_write,
+};
+
+static const struct ad5446_chip_info ad5640_2500_chip_info = {
+ .channel = AD5446_CHANNEL_POWERDOWN(14, 16, 0),
+ .int_vref_mv = 2500,
+ .write = ad5446_write,
+};
+
+static const struct ad5446_chip_info ad5640_1250_chip_info = {
+ .channel = AD5446_CHANNEL_POWERDOWN(14, 16, 0),
+ .int_vref_mv = 1250,
+ .write = ad5446_write,
+};
+
+static const struct ad5446_chip_info ad5660_2500_chip_info = {
+ .channel = AD5446_CHANNEL_POWERDOWN(16, 16, 0),
+ .int_vref_mv = 2500,
+ .write = ad5660_write,
+};
+
+static const struct ad5446_chip_info ad5660_1250_chip_info = {
+ .channel = AD5446_CHANNEL_POWERDOWN(16, 16, 0),
+ .int_vref_mv = 1250,
+ .write = ad5660_write,
+};
+
+static const struct ad5446_chip_info ad5662_chip_info = {
+ .channel = AD5446_CHANNEL_POWERDOWN(16, 16, 0),
+ .write = ad5660_write,
+};
+
+static const struct spi_device_id ad5446_spi_ids[] = {
+ {"ad5300", (kernel_ulong_t)&ad5300_chip_info},
+ {"ad5310", (kernel_ulong_t)&ad5310_chip_info},
+ {"ad5320", (kernel_ulong_t)&ad5320_chip_info},
+ {"ad5444", (kernel_ulong_t)&ad5444_chip_info},
+ {"ad5446", (kernel_ulong_t)&ad5446_chip_info},
+ {"ad5450", (kernel_ulong_t)&ad5450_chip_info},
+ {"ad5451", (kernel_ulong_t)&ad5451_chip_info},
+ {"ad5452", (kernel_ulong_t)&ad5444_chip_info}, /* ad5452 is compatible to the ad5444 */
+ {"ad5453", (kernel_ulong_t)&ad5446_chip_info}, /* ad5453 is compatible to the ad5446 */
+ {"ad5512a", (kernel_ulong_t)&ad5512a_chip_info},
+ {"ad5541a", (kernel_ulong_t)&ad5541a_chip_info},
+ {"ad5542a", (kernel_ulong_t)&ad5541a_chip_info}, /* ad5541a and ad5542a are compatible */
+ {"ad5543", (kernel_ulong_t)&ad5541a_chip_info}, /* ad5541a and ad5543 are compatible */
+ {"ad5553", (kernel_ulong_t)&ad5553_chip_info},
+ {"ad5600", (kernel_ulong_t)&ad5541a_chip_info}, /* ad5541a and ad5600 are compatible */
+ {"ad5601", (kernel_ulong_t)&ad5601_chip_info},
+ {"ad5611", (kernel_ulong_t)&ad5611_chip_info},
+ {"ad5621", (kernel_ulong_t)&ad5621_chip_info},
+ {"ad5641", (kernel_ulong_t)&ad5641_chip_info},
+ {"ad5620-2500", (kernel_ulong_t)&ad5620_2500_chip_info}, /* AD5620/40/60: */
+ /* part numbers may look differently */
+ {"ad5620-1250", (kernel_ulong_t)&ad5620_1250_chip_info},
+ {"ad5640-2500", (kernel_ulong_t)&ad5640_2500_chip_info},
+ {"ad5640-1250", (kernel_ulong_t)&ad5640_1250_chip_info},
+ {"ad5660-2500", (kernel_ulong_t)&ad5660_2500_chip_info},
+ {"ad5660-1250", (kernel_ulong_t)&ad5660_1250_chip_info},
+ {"ad5662", (kernel_ulong_t)&ad5662_chip_info},
+ {"dac081s101", (kernel_ulong_t)&ad5300_chip_info}, /* compatible Texas Instruments chips */
+ {"dac101s101", (kernel_ulong_t)&ad5310_chip_info},
+ {"dac121s101", (kernel_ulong_t)&ad5320_chip_info},
+ {"dac7512", (kernel_ulong_t)&ad5320_chip_info},
+ { }
+};
+MODULE_DEVICE_TABLE(spi, ad5446_spi_ids);
+
+static const struct of_device_id ad5446_of_ids[] = {
+ { .compatible = "adi,ad5300", .data = &ad5300_chip_info },
+ { .compatible = "adi,ad5310", .data = &ad5310_chip_info },
+ { .compatible = "adi,ad5320", .data = &ad5320_chip_info },
+ { .compatible = "adi,ad5444", .data = &ad5444_chip_info },
+ { .compatible = "adi,ad5446", .data = &ad5446_chip_info },
+ { .compatible = "adi,ad5450", .data = &ad5450_chip_info },
+ { .compatible = "adi,ad5451", .data = &ad5451_chip_info },
+ { .compatible = "adi,ad5452", .data = &ad5444_chip_info },
+ { .compatible = "adi,ad5453", .data = &ad5446_chip_info },
+ { .compatible = "adi,ad5512a", .data = &ad5512a_chip_info },
+ { .compatible = "adi,ad5541a", .data = &ad5541a_chip_info },
+ { .compatible = "adi,ad5542a", .data = &ad5541a_chip_info },
+ { .compatible = "adi,ad5543", .data = &ad5541a_chip_info },
+ { .compatible = "adi,ad5553", .data = &ad5553_chip_info },
+ { .compatible = "adi,ad5600", .data = &ad5541a_chip_info },
+ { .compatible = "adi,ad5601", .data = &ad5601_chip_info },
+ { .compatible = "adi,ad5611", .data = &ad5611_chip_info },
+ { .compatible = "adi,ad5621", .data = &ad5621_chip_info },
+ { .compatible = "adi,ad5641", .data = &ad5641_chip_info },
+ { .compatible = "adi,ad5620-2500", .data = &ad5620_2500_chip_info },
+ { .compatible = "adi,ad5620-1250", .data = &ad5620_1250_chip_info },
+ { .compatible = "adi,ad5640-2500", .data = &ad5640_2500_chip_info },
+ { .compatible = "adi,ad5640-1250", .data = &ad5640_1250_chip_info },
+ { .compatible = "adi,ad5660-2500", .data = &ad5660_2500_chip_info },
+ { .compatible = "adi,ad5660-1250", .data = &ad5660_1250_chip_info },
+ { .compatible = "adi,ad5662", .data = &ad5662_chip_info },
+ { .compatible = "ti,dac081s101", .data = &ad5300_chip_info },
+ { .compatible = "ti,dac101s101", .data = &ad5310_chip_info },
+ { .compatible = "ti,dac121s101", .data = &ad5320_chip_info },
+ { .compatible = "ti,dac7512", .data = &ad5320_chip_info },
+ { }
+};
+MODULE_DEVICE_TABLE(of, ad5446_of_ids);
+
+static struct spi_driver ad5446_spi_driver = {
+ .driver = {
+ .name = "ad5446",
+ .of_match_table = ad5446_of_ids,
+ },
+ .probe = ad5446_spi_probe,
+ .id_table = ad5446_spi_ids,
+};
+module_spi_driver(ad5446_spi_driver);
+
+MODULE_AUTHOR("Nuno Sá <nuno.sa@analog.com>");
+MODULE_DESCRIPTION("Analog Devices AD5446 and similar SPI DACs");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS("IIO_AD5446");
// SPDX-License-Identifier: GPL-2.0-or-later
/*
- * AD5446 SPI DAC driver
+ * AD5446 CORE DAC driver
*
* Copyright 2010 Analog Devices Inc.
*/
+#include <linux/export.h>
#include <linux/interrupt.h>
#include <linux/workqueue.h>
#include <linux/device.h>
#include <linux/slab.h>
#include <linux/sysfs.h>
#include <linux/list.h>
-#include <linux/spi/spi.h>
-#include <linux/i2c.h>
#include <linux/regulator/consumer.h>
#include <linux/err.h>
#include <linux/module.h>
-#include <linux/mod_devicetable.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
-#include <linux/unaligned.h>
+#include "ad5446.h"
#define MODE_PWRDWN_1k 0x1
#define MODE_PWRDWN_100k 0x2
#define MODE_PWRDWN_TRISTATE 0x3
-/**
- * struct ad5446_state - driver instance specific data
- * @dev: this device
- * @chip_info: chip model specific constants, available modes etc
- * @vref_mv: actual reference voltage used
- * @cached_val: store/retrieve values during power down
- * @pwr_down_mode: power down mode (1k, 100k or tristate)
- * @pwr_down: true if the device is in power down
- * @lock: lock to protect the data buffer during write ops
- * @d16: 16bit DMA safe buffer
- * @d24: 24bit DMA safe buffer
- */
-
-struct ad5446_state {
- struct device *dev;
- const struct ad5446_chip_info *chip_info;
- unsigned short vref_mv;
- unsigned cached_val;
- unsigned pwr_down_mode;
- unsigned pwr_down;
- struct mutex lock;
- union {
- __be16 d16;
- u8 d24[3];
- } __aligned(IIO_DMA_MINALIGN);
-};
-
-/**
- * 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);
-};
-
static const char * const ad5446_powerdown_modes[] = {
"1kohm_to_gnd", "100kohm_to_gnd", "three_state"
};
return ret ? ret : len;
}
-static const struct iio_chan_spec_ext_info ad5446_ext_info_powerdown[] = {
+const struct iio_chan_spec_ext_info ad5446_ext_info_powerdown[] = {
{
.name = "powerdown",
.read = ad5446_read_dac_powerdown,
IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ad5446_powerdown_mode_enum),
{ }
};
-
-#define _AD5446_CHANNEL(bits, storage, _shift, ext) { \
- .type = IIO_VOLTAGE, \
- .indexed = 1, \
- .output = 1, \
- .channel = 0, \
- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
- .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
- .scan_type = { \
- .sign = 'u', \
- .realbits = (bits), \
- .storagebits = (storage), \
- .shift = (_shift), \
- }, \
- .ext_info = (ext), \
-}
-
-#define AD5446_CHANNEL(bits, storage, shift) \
- _AD5446_CHANNEL(bits, storage, shift, NULL)
-
-#define AD5446_CHANNEL_POWERDOWN(bits, storage, shift) \
- _AD5446_CHANNEL(bits, storage, shift, ad5446_ext_info_powerdown)
+EXPORT_SYMBOL_NS_GPL(ad5446_ext_info_powerdown, "IIO_AD5446");
static int ad5446_read_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
.write_raw = ad5446_write_raw,
};
-static int ad5446_probe(struct device *dev, const char *name,
- const struct ad5446_chip_info *chip_info)
+int ad5446_probe(struct device *dev, const char *name,
+ const struct ad5446_chip_info *chip_info)
{
struct ad5446_state *st;
struct iio_dev *indio_dev;
return devm_iio_device_register(dev, indio_dev);
}
-
-#if IS_ENABLED(CONFIG_SPI_MASTER)
-
-static int ad5446_write(struct ad5446_state *st, unsigned val)
-{
- struct spi_device *spi = to_spi_device(st->dev);
- st->d16 = cpu_to_be16(val);
-
- return spi_write(spi, &st->d16, sizeof(st->d16));
-}
-
-static int ad5660_write(struct ad5446_state *st, unsigned val)
-{
- struct spi_device *spi = to_spi_device(st->dev);
-
- put_unaligned_be24(val, st->d24);
-
- return spi_write(spi, st->d24, sizeof(st->d24));
-}
-
-/*
- * ad5446_supported_spi_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.
- */
-
-static const struct ad5446_chip_info ad5300_chip_info = {
- .channel = AD5446_CHANNEL_POWERDOWN(8, 16, 4),
- .write = ad5446_write,
-};
-
-static const struct ad5446_chip_info ad5310_chip_info = {
- .channel = AD5446_CHANNEL_POWERDOWN(10, 16, 2),
- .write = ad5446_write,
-};
-
-static const struct ad5446_chip_info ad5320_chip_info = {
- .channel = AD5446_CHANNEL_POWERDOWN(12, 16, 0),
- .write = ad5446_write,
-};
-
-static const struct ad5446_chip_info ad5444_chip_info = {
- .channel = AD5446_CHANNEL(12, 16, 2),
- .write = ad5446_write,
-};
-
-static const struct ad5446_chip_info ad5446_chip_info = {
- .channel = AD5446_CHANNEL(14, 16, 0),
- .write = ad5446_write,
-};
-
-static const struct ad5446_chip_info ad5450_chip_info = {
- .channel = AD5446_CHANNEL(8, 16, 6),
- .write = ad5446_write,
-};
-
-static const struct ad5446_chip_info ad5451_chip_info = {
- .channel = AD5446_CHANNEL(10, 16, 4),
- .write = ad5446_write,
-};
-
-static const struct ad5446_chip_info ad5541a_chip_info = {
- .channel = AD5446_CHANNEL(16, 16, 0),
- .write = ad5446_write,
-};
-
-static const struct ad5446_chip_info ad5512a_chip_info = {
- .channel = AD5446_CHANNEL(12, 16, 4),
- .write = ad5446_write,
-};
-
-static const struct ad5446_chip_info ad5553_chip_info = {
- .channel = AD5446_CHANNEL(14, 16, 0),
- .write = ad5446_write,
-};
-
-static const struct ad5446_chip_info ad5601_chip_info = {
- .channel = AD5446_CHANNEL_POWERDOWN(8, 16, 6),
- .write = ad5446_write,
-};
-
-static const struct ad5446_chip_info ad5611_chip_info = {
- .channel = AD5446_CHANNEL_POWERDOWN(10, 16, 4),
- .write = ad5446_write,
-};
-
-static const struct ad5446_chip_info ad5621_chip_info = {
- .channel = AD5446_CHANNEL_POWERDOWN(12, 16, 2),
- .write = ad5446_write,
-};
-
-static const struct ad5446_chip_info ad5641_chip_info = {
- .channel = AD5446_CHANNEL_POWERDOWN(14, 16, 0),
- .write = ad5446_write,
-};
-
-static const struct ad5446_chip_info ad5620_2500_chip_info = {
- .channel = AD5446_CHANNEL_POWERDOWN(12, 16, 2),
- .int_vref_mv = 2500,
- .write = ad5446_write,
-};
-
-static const struct ad5446_chip_info ad5620_1250_chip_info = {
- .channel = AD5446_CHANNEL_POWERDOWN(12, 16, 2),
- .int_vref_mv = 1250,
- .write = ad5446_write,
-};
-
-static const struct ad5446_chip_info ad5640_2500_chip_info = {
- .channel = AD5446_CHANNEL_POWERDOWN(14, 16, 0),
- .int_vref_mv = 2500,
- .write = ad5446_write,
-};
-
-static const struct ad5446_chip_info ad5640_1250_chip_info = {
- .channel = AD5446_CHANNEL_POWERDOWN(14, 16, 0),
- .int_vref_mv = 1250,
- .write = ad5446_write,
-};
-
-static const struct ad5446_chip_info ad5660_2500_chip_info = {
- .channel = AD5446_CHANNEL_POWERDOWN(16, 16, 0),
- .int_vref_mv = 2500,
- .write = ad5660_write,
-};
-
-static const struct ad5446_chip_info ad5660_1250_chip_info = {
- .channel = AD5446_CHANNEL_POWERDOWN(16, 16, 0),
- .int_vref_mv = 1250,
- .write = ad5660_write,
-};
-
-static const struct ad5446_chip_info ad5662_chip_info = {
- .channel = AD5446_CHANNEL_POWERDOWN(16, 16, 0),
- .write = ad5660_write,
-};
-
-static const struct spi_device_id ad5446_spi_ids[] = {
- {"ad5300", (kernel_ulong_t)&ad5300_chip_info},
- {"ad5310", (kernel_ulong_t)&ad5310_chip_info},
- {"ad5320", (kernel_ulong_t)&ad5320_chip_info},
- {"ad5444", (kernel_ulong_t)&ad5444_chip_info},
- {"ad5446", (kernel_ulong_t)&ad5446_chip_info},
- {"ad5450", (kernel_ulong_t)&ad5450_chip_info},
- {"ad5451", (kernel_ulong_t)&ad5451_chip_info},
- {"ad5452", (kernel_ulong_t)&ad5444_chip_info}, /* ad5452 is compatible to the ad5444 */
- {"ad5453", (kernel_ulong_t)&ad5446_chip_info}, /* ad5453 is compatible to the ad5446 */
- {"ad5512a", (kernel_ulong_t)&ad5512a_chip_info},
- {"ad5541a", (kernel_ulong_t)&ad5541a_chip_info},
- {"ad5542a", (kernel_ulong_t)&ad5541a_chip_info}, /* ad5541a and ad5542a are compatible */
- {"ad5543", (kernel_ulong_t)&ad5541a_chip_info}, /* ad5541a and ad5543 are compatible */
- {"ad5553", (kernel_ulong_t)&ad5553_chip_info},
- {"ad5600", (kernel_ulong_t)&ad5541a_chip_info}, /* ad5541a and ad5600 are compatible */
- {"ad5601", (kernel_ulong_t)&ad5601_chip_info},
- {"ad5611", (kernel_ulong_t)&ad5611_chip_info},
- {"ad5621", (kernel_ulong_t)&ad5621_chip_info},
- {"ad5641", (kernel_ulong_t)&ad5641_chip_info},
- {"ad5620-2500", (kernel_ulong_t)&ad5620_2500_chip_info}, /* AD5620/40/60: */
- /* part numbers may look differently */
- {"ad5620-1250", (kernel_ulong_t)&ad5620_1250_chip_info},
- {"ad5640-2500", (kernel_ulong_t)&ad5640_2500_chip_info},
- {"ad5640-1250", (kernel_ulong_t)&ad5640_1250_chip_info},
- {"ad5660-2500", (kernel_ulong_t)&ad5660_2500_chip_info},
- {"ad5660-1250", (kernel_ulong_t)&ad5660_1250_chip_info},
- {"ad5662", (kernel_ulong_t)&ad5662_chip_info},
- {"dac081s101", (kernel_ulong_t)&ad5300_chip_info}, /* compatible Texas Instruments chips */
- {"dac101s101", (kernel_ulong_t)&ad5310_chip_info},
- {"dac121s101", (kernel_ulong_t)&ad5320_chip_info},
- {"dac7512", (kernel_ulong_t)&ad5320_chip_info},
- { }
-};
-MODULE_DEVICE_TABLE(spi, ad5446_spi_ids);
-
-static const struct of_device_id ad5446_of_ids[] = {
- { .compatible = "adi,ad5300", .data = &ad5300_chip_info },
- { .compatible = "adi,ad5310", .data = &ad5310_chip_info },
- { .compatible = "adi,ad5320", .data = &ad5320_chip_info },
- { .compatible = "adi,ad5444", .data = &ad5444_chip_info },
- { .compatible = "adi,ad5446", .data = &ad5446_chip_info },
- { .compatible = "adi,ad5450", .data = &ad5450_chip_info },
- { .compatible = "adi,ad5451", .data = &ad5451_chip_info },
- { .compatible = "adi,ad5452", .data = &ad5444_chip_info },
- { .compatible = "adi,ad5453", .data = &ad5446_chip_info },
- { .compatible = "adi,ad5512a", .data = &ad5512a_chip_info },
- { .compatible = "adi,ad5541a", .data = &ad5541a_chip_info },
- { .compatible = "adi,ad5542a", .data = &ad5541a_chip_info },
- { .compatible = "adi,ad5543", .data = &ad5541a_chip_info },
- { .compatible = "adi,ad5553", .data = &ad5553_chip_info },
- { .compatible = "adi,ad5600", .data = &ad5541a_chip_info },
- { .compatible = "adi,ad5601", .data = &ad5601_chip_info },
- { .compatible = "adi,ad5611", .data = &ad5611_chip_info },
- { .compatible = "adi,ad5621", .data = &ad5621_chip_info },
- { .compatible = "adi,ad5641", .data = &ad5641_chip_info },
- { .compatible = "adi,ad5620-2500", .data = &ad5620_2500_chip_info },
- { .compatible = "adi,ad5620-1250", .data = &ad5620_1250_chip_info },
- { .compatible = "adi,ad5640-2500", .data = &ad5640_2500_chip_info },
- { .compatible = "adi,ad5640-1250", .data = &ad5640_1250_chip_info },
- { .compatible = "adi,ad5660-2500", .data = &ad5660_2500_chip_info },
- { .compatible = "adi,ad5660-1250", .data = &ad5660_1250_chip_info },
- { .compatible = "adi,ad5662", .data = &ad5662_chip_info },
- { .compatible = "ti,dac081s101", .data = &ad5300_chip_info },
- { .compatible = "ti,dac101s101", .data = &ad5310_chip_info },
- { .compatible = "ti,dac121s101", .data = &ad5320_chip_info },
- { .compatible = "ti,dac7512" },
- { }
-};
-MODULE_DEVICE_TABLE(of, ad5446_of_ids);
-
-static int ad5446_spi_probe(struct spi_device *spi)
-{
- const struct spi_device_id *id = spi_get_device_id(spi);
- const struct ad5446_chip_info *chip_info;
-
- chip_info = spi_get_device_match_data(spi);
- if (!chip_info)
- return -ENODEV;
-
- return ad5446_probe(&spi->dev, id->name, chip_info);
-}
-
-static struct spi_driver ad5446_spi_driver = {
- .driver = {
- .name = "ad5446",
- .of_match_table = ad5446_of_ids,
- },
- .probe = ad5446_spi_probe,
- .id_table = ad5446_spi_ids,
-};
-
-static int __init ad5446_spi_register_driver(void)
-{
- return spi_register_driver(&ad5446_spi_driver);
-}
-
-static void ad5446_spi_unregister_driver(void)
-{
- spi_unregister_driver(&ad5446_spi_driver);
-}
-
-#else
-
-static inline int ad5446_spi_register_driver(void) { return 0; }
-static inline void ad5446_spi_unregister_driver(void) { }
-
-#endif
-
-#if IS_ENABLED(CONFIG_I2C)
-
-static int ad5622_write(struct ad5446_state *st, unsigned val)
-{
- struct i2c_client *client = to_i2c_client(st->dev);
- st->d16 = cpu_to_be16(val);
- int ret;
-
- ret = i2c_master_send_dmasafe(client, (char *)&st->d16, sizeof(st->d16));
- if (ret < 0)
- return ret;
- if (ret != sizeof(st->d16))
- return -EIO;
-
- return 0;
-}
-
-/*
- * ad5446_supported_i2c_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.
- */
-
-static const struct ad5446_chip_info ad5602_chip_info = {
- .channel = AD5446_CHANNEL_POWERDOWN(8, 16, 4),
- .write = ad5622_write,
-};
-
-static const struct ad5446_chip_info ad5612_chip_info = {
- .channel = AD5446_CHANNEL_POWERDOWN(10, 16, 2),
- .write = ad5622_write,
-};
-
-static const struct ad5446_chip_info ad5622_chip_info = {
- .channel = AD5446_CHANNEL_POWERDOWN(12, 16, 0),
- .write = ad5622_write,
-};
-
-static int ad5446_i2c_probe(struct i2c_client *i2c)
-{
- const struct i2c_device_id *id = i2c_client_get_device_id(i2c);
- const struct ad5446_chip_info *chip_info;
-
- chip_info = i2c_get_match_data(i2c);
- if (!chip_info)
- return -ENODEV;
-
- return ad5446_probe(&i2c->dev, id->name, chip_info);
-}
-
-static const struct i2c_device_id ad5446_i2c_ids[] = {
- {"ad5301", (kernel_ulong_t)&ad5602_chip_info},
- {"ad5311", (kernel_ulong_t)&ad5612_chip_info},
- {"ad5321", (kernel_ulong_t)&ad5622_chip_info},
- {"ad5602", (kernel_ulong_t)&ad5602_chip_info},
- {"ad5612", (kernel_ulong_t)&ad5612_chip_info},
- {"ad5622", (kernel_ulong_t)&ad5622_chip_info},
- { }
-};
-MODULE_DEVICE_TABLE(i2c, ad5446_i2c_ids);
-
-static const struct of_device_id ad5446_i2c_of_ids[] = {
- { .compatible = "adi,ad5301", .data = &ad5602_chip_info },
- { .compatible = "adi,ad5311", .data = &ad5612_chip_info },
- { .compatible = "adi,ad5321", .data = &ad5622_chip_info },
- { .compatible = "adi,ad5602", .data = &ad5602_chip_info },
- { .compatible = "adi,ad5612", .data = &ad5612_chip_info },
- { .compatible = "adi,ad5622", .data = &ad5622_chip_info },
- { }
-};
-MODULE_DEVICE_TABLE(of, ad5446_i2c_of_ids);
-
-static struct i2c_driver ad5446_i2c_driver = {
- .driver = {
- .name = "ad5446",
- .of_match_table = ad5446_i2c_of_ids,
- },
- .probe = ad5446_i2c_probe,
- .id_table = ad5446_i2c_ids,
-};
-
-static int __init ad5446_i2c_register_driver(void)
-{
- return i2c_add_driver(&ad5446_i2c_driver);
-}
-
-static void __exit ad5446_i2c_unregister_driver(void)
-{
- i2c_del_driver(&ad5446_i2c_driver);
-}
-
-#else
-
-static inline int ad5446_i2c_register_driver(void) { return 0; }
-static inline void ad5446_i2c_unregister_driver(void) { }
-
-#endif
-
-static int __init ad5446_init(void)
-{
- int ret;
-
- ret = ad5446_spi_register_driver();
- if (ret)
- return ret;
-
- ret = ad5446_i2c_register_driver();
- if (ret) {
- ad5446_spi_unregister_driver();
- return ret;
- }
-
- return 0;
-}
-module_init(ad5446_init);
-
-static void __exit ad5446_exit(void)
-{
- ad5446_i2c_unregister_driver();
- ad5446_spi_unregister_driver();
-}
-module_exit(ad5446_exit);
+EXPORT_SYMBOL_NS_GPL(ad5446_probe, "IIO_AD5446");
MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>");
-MODULE_DESCRIPTION("Analog Devices AD5444/AD5446 DAC");
+MODULE_DESCRIPTION("Analog Devices CORE AD5446 DAC and similar devices");
MODULE_LICENSE("GPL v2");
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_AD5446_H
+#define _LINUX_AD5446_H
+
+#include <linux/bits.h>
+#include <linux/iio/iio.h>
+#include <linux/mutex.h>
+#include <linux/types.h>
+
+struct device;
+
+extern const struct iio_chan_spec_ext_info ad5446_ext_info_powerdown[];
+
+#define _AD5446_CHANNEL(bits, storage, _shift, ext) { \
+ .type = IIO_VOLTAGE, \
+ .indexed = 1, \
+ .output = 1, \
+ .channel = 0, \
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
+ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
+ .scan_type = { \
+ .sign = 'u', \
+ .realbits = (bits), \
+ .storagebits = (storage), \
+ .shift = (_shift), \
+ }, \
+ .ext_info = (ext), \
+}
+
+#define AD5446_CHANNEL(bits, storage, shift) \
+ _AD5446_CHANNEL(bits, storage, shift, NULL)
+
+#define AD5446_CHANNEL_POWERDOWN(bits, storage, shift) \
+ _AD5446_CHANNEL(bits, storage, shift, ad5446_ext_info_powerdown)
+
+/**
+ * struct ad5446_state - driver instance specific data
+ * @dev: this device
+ * @chip_info: chip model specific constants, available modes etc
+ * @vref_mv: actual reference voltage used
+ * @cached_val: store/retrieve values during power down
+ * @pwr_down_mode: power down mode (1k, 100k or tristate)
+ * @pwr_down: true if the device is in power down
+ * @lock: lock to protect the data buffer during write ops
+ */
+struct ad5446_state {
+ struct device *dev;
+ const struct ad5446_chip_info *chip_info;
+ unsigned short vref_mv;
+ unsigned int cached_val;
+ unsigned int pwr_down_mode;
+ unsigned int pwr_down;
+ /* mutex to protect device shared data */
+ struct mutex lock;
+ union {
+ __be16 d16;
+ u8 d24[3];
+ } __aligned(IIO_DMA_MINALIGN);
+};
+
+/**
+ * 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 int val);
+};
+
+int ad5446_probe(struct device *dev, const char *name,
+ const struct ad5446_chip_info *chip_info);
+
+#endif
projects / thirdparty / linux.git / commitdiff
