7f83e105bd
[ Upstream commit b73f08bb7fe5a0901646ca5ceaa1e7a2d5ee6293 ]
When reading in_voltage_scale we can get something like:
root@analog:/sys/bus/iio/devices/iio:device2# cat in_voltage_scale
0.038146
However, when reading the available options:
root@analog:/sys/bus/iio/devices/iio:device2# cat
in_voltage_scale_available
2000.000000 2100.000006 2200.000007 2300.000008 2400.000009 2500.000010
which does not make sense. Moreover, when trying to set a new scale we
get an error because there's no call to __ad9467_get_scale() to give us
values as given when reading in_voltage_scale. Fix it by computing the
available scales during probe and properly pass the list when
.read_available() is called.
While at it, change to use .read_available() from iio_info. Also note
that to properly fix this, adi-axi-adc.c has to be changed accordingly.
Fixes: ad6797120238 ("iio: adc: ad9467: add support AD9467 ADC")
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://lore.kernel.org/r/20231207-iio-backend-prep-v2-4-a4a33bc4d70e@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
68 lines
2.1 KiB
C
Executable file
68 lines
2.1 KiB
C
Executable file
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Analog Devices Generic AXI ADC IP core driver/library
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* Link: https://wiki.analog.com/resources/fpga/docs/axi_adc_ip
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*
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* Copyright 2012-2020 Analog Devices Inc.
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*/
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#ifndef __ADI_AXI_ADC_H__
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#define __ADI_AXI_ADC_H__
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struct device;
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struct iio_chan_spec;
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/**
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* struct adi_axi_adc_chip_info - Chip specific information
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* @name Chip name
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* @id Chip ID (usually product ID)
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* @channels Channel specifications of type @struct axi_adc_chan_spec
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* @num_channels Number of @channels
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* @scale_table Supported scales by the chip; tuples of 2 ints
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* @num_scales Number of scales in the table
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* @max_rate Maximum sampling rate supported by the device
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*/
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struct adi_axi_adc_chip_info {
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const char *name;
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unsigned int id;
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const struct iio_chan_spec *channels;
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unsigned int num_channels;
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const unsigned int (*scale_table)[2];
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int num_scales;
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unsigned long max_rate;
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};
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/**
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* struct adi_axi_adc_conv - data of the ADC attached to the AXI ADC
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* @chip_info chip info details for the client ADC
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* @preenable_setup op to run in the client before enabling the AXI ADC
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* @reg_access IIO debugfs_reg_access hook for the client ADC
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* @read_raw IIO read_raw hook for the client ADC
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* @write_raw IIO write_raw hook for the client ADC
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* @read_avail IIO read_avail hook for the client ADC
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*/
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struct adi_axi_adc_conv {
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const struct adi_axi_adc_chip_info *chip_info;
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int (*preenable_setup)(struct adi_axi_adc_conv *conv);
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int (*reg_access)(struct adi_axi_adc_conv *conv, unsigned int reg,
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unsigned int writeval, unsigned int *readval);
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int (*read_raw)(struct adi_axi_adc_conv *conv,
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struct iio_chan_spec const *chan,
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int *val, int *val2, long mask);
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int (*write_raw)(struct adi_axi_adc_conv *conv,
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struct iio_chan_spec const *chan,
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int val, int val2, long mask);
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int (*read_avail)(struct adi_axi_adc_conv *conv,
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struct iio_chan_spec const *chan,
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const int **val, int *type, int *length, long mask);
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};
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struct adi_axi_adc_conv *devm_adi_axi_adc_conv_register(struct device *dev,
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size_t sizeof_priv);
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void *adi_axi_adc_conv_priv(struct adi_axi_adc_conv *conv);
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#endif
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