On 23/03/16 08:57, Slawomir Stepien wrote: > The following functionalities are supported: > - write, read from volatile memory > > Datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/22060b.pdf > > Signed-off-by: Slawomir Stepien <sst@xxxxxxxxx> One process comment below... And git actually copes fine with what you did (I wondered which way it would go until I tried it :) Applied to the togreg branch of iio.git - initially pushed out as testing for the autobuilders to play pingpong with it. A very nice, clean driver. Thanks for your hard work on this. Note it is in a branch I happy to rebase for the next week, so if Joachim in particular would like to add a reviewed by tag, I'd be delighted to append it. Often reviewers don't get enough credit in my opinion! Jonathan > --- > Changes since v4: > - Added necessary include files and sorted all includes > - Added missing mutex unlock when there is CMDERR > - mcp4131_write_raw spi_write/mutex_unlock/return refactor > > Changes since v3: > - Added 'potentiometer' to subject > - Replaced mcp4131_exec with spi_write and mcp4131_read > - Narrowed mutex locking and unlocking places > > Changes since v2: > - Removed unnecessary parentheses in MCP4131_WIPER_SHIFT macro > - Replaced the rx and tx SPI buffers with one buf that is ____cacheline_aligned > - Changed mutex locking position > - Replaced the devid with pointer to model configuration > - Removed positive ("Registered" & "Unregistered") dev_info prints > - Removed the mcp4131_remove callback > > Changes since v1: > - One line summary changed > - Fixed module name and OF compatible > - Based code on Peter Rosin's code from mcp4531.c > - No additional sysfs attributes > - Deleted not used devid struct memeber > - Changed mcp4131_exec function arguments: > - write value is now u16 > - no need to pass return buffer array - rx array from mcp4131_data is used > - Added missing new line characters to dev_info Funnily enough, this is the only thing I can find wrong in this patch. Should not introduce an additional --- as you have done here. The version stuff should simply have a blank line between it and the stats ;) > --- > .../bindings/iio/potentiometer/mcp4131.txt | 84 ++++ > drivers/iio/potentiometer/Kconfig | 18 + > drivers/iio/potentiometer/Makefile | 1 + > drivers/iio/potentiometer/mcp4131.c | 494 +++++++++++++++++++++ > 4 files changed, 597 insertions(+) > create mode 100644 Documentation/devicetree/bindings/iio/potentiometer/mcp4131.txt > create mode 100644 drivers/iio/potentiometer/mcp4131.c > > diff --git a/Documentation/devicetree/bindings/iio/potentiometer/mcp4131.txt b/Documentation/devicetree/bindings/iio/potentiometer/mcp4131.txt > new file mode 100644 > index 0000000..3ccba16 > --- /dev/null > +++ b/Documentation/devicetree/bindings/iio/potentiometer/mcp4131.txt > @@ -0,0 +1,84 @@ > +* Microchip MCP413X/414X/415X/416X/423X/424X/425X/426X Digital Potentiometer > + driver > + > +The node for this driver must be a child node of a SPI controller, hence > +all mandatory properties described in > + > + Documentation/devicetree/bindings/spi/spi-bus.txt > + > +must be specified. > + > +Required properties: > + - compatible: Must be one of the following, depending on the > + model: > + "microchip,mcp4131-502" > + "microchip,mcp4131-103" > + "microchip,mcp4131-503" > + "microchip,mcp4131-104" > + "microchip,mcp4132-502" > + "microchip,mcp4132-103" > + "microchip,mcp4132-503" > + "microchip,mcp4132-104" > + "microchip,mcp4141-502" > + "microchip,mcp4141-103" > + "microchip,mcp4141-503" > + "microchip,mcp4141-104" > + "microchip,mcp4142-502" > + "microchip,mcp4142-103" > + "microchip,mcp4142-503" > + "microchip,mcp4142-104" > + "microchip,mcp4151-502" > + "microchip,mcp4151-103" > + "microchip,mcp4151-503" > + "microchip,mcp4151-104" > + "microchip,mcp4152-502" > + "microchip,mcp4152-103" > + "microchip,mcp4152-503" > + "microchip,mcp4152-104" > + "microchip,mcp4161-502" > + "microchip,mcp4161-103" > + "microchip,mcp4161-503" > + "microchip,mcp4161-104" > + "microchip,mcp4162-502" > + "microchip,mcp4162-103" > + "microchip,mcp4162-503" > + "microchip,mcp4162-104" > + "microchip,mcp4231-502" > + "microchip,mcp4231-103" > + "microchip,mcp4231-503" > + "microchip,mcp4231-104" > + "microchip,mcp4232-502" > + "microchip,mcp4232-103" > + "microchip,mcp4232-503" > + "microchip,mcp4232-104" > + "microchip,mcp4241-502" > + "microchip,mcp4241-103" > + "microchip,mcp4241-503" > + "microchip,mcp4241-104" > + "microchip,mcp4242-502" > + "microchip,mcp4242-103" > + "microchip,mcp4242-503" > + "microchip,mcp4242-104" > + "microchip,mcp4251-502" > + "microchip,mcp4251-103" > + "microchip,mcp4251-503" > + "microchip,mcp4251-104" > + "microchip,mcp4252-502" > + "microchip,mcp4252-103" > + "microchip,mcp4252-503" > + "microchip,mcp4252-104" > + "microchip,mcp4261-502" > + "microchip,mcp4261-103" > + "microchip,mcp4261-503" > + "microchip,mcp4261-104" > + "microchip,mcp4262-502" > + "microchip,mcp4262-103" > + "microchip,mcp4262-503" > + "microchip,mcp4262-104" > + > +Example: > +mcp4131: mcp4131@0 { > + compatible = "mcp4131-502"; > + reg = <0>; > + spi-max-frequency = <500000>; > +}; > diff --git a/drivers/iio/potentiometer/Kconfig b/drivers/iio/potentiometer/Kconfig > index fd75db7..5ef181a 100644 > --- a/drivers/iio/potentiometer/Kconfig > +++ b/drivers/iio/potentiometer/Kconfig > @@ -5,6 +5,24 @@ > > menu "Digital potentiometers" > > +config MCP4131 > + tristate "Microchip MCP413X/414X/415X/416X/423X/424X/425X/426X Digital Potentiometer driver" > + depends on SPI > + help > + Say yes here to build support for the Microchip > + MCP4131, MCP4132, > + MCP4141, MCP4142, > + MCP4151, MCP4152, > + MCP4161, MCP4162, > + MCP4231, MCP4232, > + MCP4241, MCP4242, > + MCP4251, MCP4252, > + MCP4261, MCP4262, > + digital potentiomenter chips. > + > + To compile this driver as a module, choose M here: the > + module will be called mcp4131. > + > config MCP4531 > tristate "Microchip MCP45xx/MCP46xx Digital Potentiometer driver" > depends on I2C > diff --git a/drivers/iio/potentiometer/Makefile b/drivers/iio/potentiometer/Makefile > index 8afe492..cd5c80b 100644 > --- a/drivers/iio/potentiometer/Makefile > +++ b/drivers/iio/potentiometer/Makefile > @@ -3,4 +3,5 @@ > # > > # When adding new entries keep the list in alphabetical order > +obj-$(CONFIG_MCP4131) += mcp4131.o > obj-$(CONFIG_MCP4531) += mcp4531.o > diff --git a/drivers/iio/potentiometer/mcp4131.c b/drivers/iio/potentiometer/mcp4131.c > new file mode 100644 > index 0000000..4e7e2c6 > --- /dev/null > +++ b/drivers/iio/potentiometer/mcp4131.c > @@ -0,0 +1,494 @@ > +/* > + * Industrial I/O driver for Microchip digital potentiometers > + * > + * Copyright (c) 2016 Slawomir Stepien > + * Based on: Peter Rosin's code from mcp4531.c > + * > + * Datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/22060b.pdf > + * > + * DEVID #Wipers #Positions Resistor Opts (kOhm) > + * mcp4131 1 129 5, 10, 50, 100 > + * mcp4132 1 129 5, 10, 50, 100 > + * mcp4141 1 129 5, 10, 50, 100 > + * mcp4142 1 129 5, 10, 50, 100 > + * mcp4151 1 257 5, 10, 50, 100 > + * mcp4152 1 257 5, 10, 50, 100 > + * mcp4161 1 257 5, 10, 50, 100 > + * mcp4162 1 257 5, 10, 50, 100 > + * mcp4231 2 129 5, 10, 50, 100 > + * mcp4232 2 129 5, 10, 50, 100 > + * mcp4241 2 129 5, 10, 50, 100 > + * mcp4242 2 129 5, 10, 50, 100 > + * mcp4251 2 257 5, 10, 50, 100 > + * mcp4252 2 257 5, 10, 50, 100 > + * mcp4261 2 257 5, 10, 50, 100 > + * mcp4262 2 257 5, 10, 50, 100 > + * > + * 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. > + */ > + > +/* > + * TODO: > + * 1. Write wiper setting to EEPROM for EEPROM capable models. > + */ > + > +#include <linux/cache.h> > +#include <linux/err.h> > +#include <linux/export.h> > +#include <linux/iio/iio.h> > +#include <linux/iio/types.h> > +#include <linux/module.h> > +#include <linux/mutex.h> > +#include <linux/of.h> > +#include <linux/spi/spi.h> > + > +#define MCP4131_WRITE (0x00 << 2) > +#define MCP4131_READ (0x03 << 2) > + > +#define MCP4131_WIPER_SHIFT 4 > +#define MCP4131_CMDERR(r) ((r[0]) & 0x02) > +#define MCP4131_RAW(r) ((r[0]) == 0xff ? 0x100 : (r[1])) > + > +struct mcp4131_cfg { > + int wipers; > + int max_pos; > + int kohms; > +}; > + > +enum mcp4131_type { > + MCP413x_502 = 0, > + MCP413x_103, > + MCP413x_503, > + MCP413x_104, > + MCP414x_502, > + MCP414x_103, > + MCP414x_503, > + MCP414x_104, > + MCP415x_502, > + MCP415x_103, > + MCP415x_503, > + MCP415x_104, > + MCP416x_502, > + MCP416x_103, > + MCP416x_503, > + MCP416x_104, > + MCP423x_502, > + MCP423x_103, > + MCP423x_503, > + MCP423x_104, > + MCP424x_502, > + MCP424x_103, > + MCP424x_503, > + MCP424x_104, > + MCP425x_502, > + MCP425x_103, > + MCP425x_503, > + MCP425x_104, > + MCP426x_502, > + MCP426x_103, > + MCP426x_503, > + MCP426x_104, > +}; > + > +static const struct mcp4131_cfg mcp4131_cfg[] = { > + [MCP413x_502] = { .wipers = 1, .max_pos = 128, .kohms = 5, }, > + [MCP413x_103] = { .wipers = 1, .max_pos = 128, .kohms = 10, }, > + [MCP413x_503] = { .wipers = 1, .max_pos = 128, .kohms = 50, }, > + [MCP413x_104] = { .wipers = 1, .max_pos = 128, .kohms = 100, }, > + [MCP414x_502] = { .wipers = 1, .max_pos = 128, .kohms = 5, }, > + [MCP414x_103] = { .wipers = 1, .max_pos = 128, .kohms = 10, }, > + [MCP414x_503] = { .wipers = 1, .max_pos = 128, .kohms = 50, }, > + [MCP414x_104] = { .wipers = 1, .max_pos = 128, .kohms = 100, }, > + [MCP415x_502] = { .wipers = 1, .max_pos = 256, .kohms = 5, }, > + [MCP415x_103] = { .wipers = 1, .max_pos = 256, .kohms = 10, }, > + [MCP415x_503] = { .wipers = 1, .max_pos = 256, .kohms = 50, }, > + [MCP415x_104] = { .wipers = 1, .max_pos = 256, .kohms = 100, }, > + [MCP416x_502] = { .wipers = 1, .max_pos = 256, .kohms = 5, }, > + [MCP416x_103] = { .wipers = 1, .max_pos = 256, .kohms = 10, }, > + [MCP416x_503] = { .wipers = 1, .max_pos = 256, .kohms = 50, }, > + [MCP416x_104] = { .wipers = 1, .max_pos = 256, .kohms = 100, }, > + [MCP423x_502] = { .wipers = 2, .max_pos = 128, .kohms = 5, }, > + [MCP423x_103] = { .wipers = 2, .max_pos = 128, .kohms = 10, }, > + [MCP423x_503] = { .wipers = 2, .max_pos = 128, .kohms = 50, }, > + [MCP423x_104] = { .wipers = 2, .max_pos = 128, .kohms = 100, }, > + [MCP424x_502] = { .wipers = 2, .max_pos = 128, .kohms = 5, }, > + [MCP424x_103] = { .wipers = 2, .max_pos = 128, .kohms = 10, }, > + [MCP424x_503] = { .wipers = 2, .max_pos = 128, .kohms = 50, }, > + [MCP424x_104] = { .wipers = 2, .max_pos = 128, .kohms = 100, }, > + [MCP425x_502] = { .wipers = 2, .max_pos = 256, .kohms = 5, }, > + [MCP425x_103] = { .wipers = 2, .max_pos = 256, .kohms = 10, }, > + [MCP425x_503] = { .wipers = 2, .max_pos = 256, .kohms = 50, }, > + [MCP425x_104] = { .wipers = 2, .max_pos = 256, .kohms = 100, }, > + [MCP426x_502] = { .wipers = 2, .max_pos = 256, .kohms = 5, }, > + [MCP426x_103] = { .wipers = 2, .max_pos = 256, .kohms = 10, }, > + [MCP426x_503] = { .wipers = 2, .max_pos = 256, .kohms = 50, }, > + [MCP426x_104] = { .wipers = 2, .max_pos = 256, .kohms = 100, }, > +}; > + > +struct mcp4131_data { > + struct spi_device *spi; > + const struct mcp4131_cfg *cfg; > + struct mutex lock; > + u8 buf[2] ____cacheline_aligned; > +}; > + > +#define MCP4131_CHANNEL(ch) { \ > + .type = IIO_RESISTANCE, \ > + .indexed = 1, \ > + .output = 1, \ > + .channel = (ch), \ > + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ > + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ > +} > + > +static const struct iio_chan_spec mcp4131_channels[] = { > + MCP4131_CHANNEL(0), > + MCP4131_CHANNEL(1), > +}; > + > +static int mcp4131_read(struct spi_device *spi, void *buf, size_t len) > +{ > + struct spi_transfer t = { > + .tx_buf = buf, /* We need to send addr, cmd and 12 bits */ > + .rx_buf = buf, > + .len = len, > + }; > + struct spi_message m; > + > + spi_message_init(&m); > + spi_message_add_tail(&t, &m); > + > + return spi_sync(spi, &m); > +} > + > +static int mcp4131_read_raw(struct iio_dev *indio_dev, > + struct iio_chan_spec const *chan, > + int *val, int *val2, long mask) > +{ > + int err; > + struct mcp4131_data *data = iio_priv(indio_dev); > + int address = chan->channel; > + > + switch (mask) { > + case IIO_CHAN_INFO_RAW: > + mutex_lock(&data->lock); > + > + data->buf[0] = (address << MCP4131_WIPER_SHIFT) | MCP4131_READ; > + data->buf[1] = 0; > + > + err = mcp4131_read(data->spi, data->buf, 2); > + if (err) { > + mutex_unlock(&data->lock); > + return err; > + } > + > + /* Error, bad address/command combination */ > + if (!MCP4131_CMDERR(data->buf)) { > + mutex_unlock(&data->lock); > + return -EIO; > + } > + > + *val = MCP4131_RAW(data->buf); > + mutex_unlock(&data->lock); > + > + return IIO_VAL_INT; > + > + case IIO_CHAN_INFO_SCALE: > + *val = 1000 * data->cfg->kohms; > + *val2 = data->cfg->max_pos; > + return IIO_VAL_FRACTIONAL; > + } > + > + return -EINVAL; > +} > + > +static int mcp4131_write_raw(struct iio_dev *indio_dev, > + struct iio_chan_spec const *chan, > + int val, int val2, long mask) > +{ > + int err; > + struct mcp4131_data *data = iio_priv(indio_dev); > + int address = chan->channel << MCP4131_WIPER_SHIFT; > + > + switch (mask) { > + case IIO_CHAN_INFO_RAW: > + if (val > data->cfg->max_pos || val < 0) > + return -EINVAL; > + break; > + > + default: > + return -EINVAL; > + } > + > + mutex_lock(&data->lock); > + > + data->buf[0] = address << MCP4131_WIPER_SHIFT; > + data->buf[0] |= MCP4131_WRITE | (val >> 8); > + data->buf[1] = val & 0xFF; /* 8 bits here */ > + > + err = spi_write(data->spi, data->buf, 2); > + mutex_unlock(&data->lock); > + > + return err; > +} > + > +static const struct iio_info mcp4131_info = { > + .read_raw = mcp4131_read_raw, > + .write_raw = mcp4131_write_raw, > + .driver_module = THIS_MODULE, > +}; > + > +static int mcp4131_probe(struct spi_device *spi) > +{ > + int err; > + struct device *dev = &spi->dev; > + unsigned long devid = spi_get_device_id(spi)->driver_data; > + struct mcp4131_data *data; > + struct iio_dev *indio_dev; > + > + indio_dev = devm_iio_device_alloc(dev, sizeof(*data)); > + if (!indio_dev) > + return -ENOMEM; > + > + data = iio_priv(indio_dev); > + spi_set_drvdata(spi, indio_dev); > + data->spi = spi; > + data->cfg = &mcp4131_cfg[devid]; > + > + mutex_init(&data->lock); > + > + indio_dev->dev.parent = dev; > + indio_dev->info = &mcp4131_info; > + indio_dev->channels = mcp4131_channels; > + indio_dev->num_channels = data->cfg->wipers; > + indio_dev->name = spi_get_device_id(spi)->name; > + > + err = devm_iio_device_register(dev, indio_dev); > + if (err) { > + dev_info(&spi->dev, "Unable to register %s\n", indio_dev->name); > + return err; > + } > + > + return 0; > +} > + > +#if defined(CONFIG_OF) > +static const struct of_device_id mcp4131_dt_ids[] = { > + { .compatible = "microchip,mcp4131-502", > + .data = &mcp4131_cfg[MCP413x_502] }, > + { .compatible = "microchip,mcp4131-103", > + .data = &mcp4131_cfg[MCP413x_103] }, > + { .compatible = "microchip,mcp4131-503", > + .data = &mcp4131_cfg[MCP413x_503] }, > + { .compatible = "microchip,mcp4131-104", > + .data = &mcp4131_cfg[MCP413x_104] }, > + { .compatible = "microchip,mcp4132-502", > + .data = &mcp4131_cfg[MCP413x_502] }, > + { .compatible = "microchip,mcp4132-103", > + .data = &mcp4131_cfg[MCP413x_103] }, > + { .compatible = "microchip,mcp4132-503", > + .data = &mcp4131_cfg[MCP413x_503] }, > + { .compatible = "microchip,mcp4132-104", > + .data = &mcp4131_cfg[MCP413x_104] }, > + { .compatible = "microchip,mcp4141-502", > + .data = &mcp4131_cfg[MCP414x_502] }, > + { .compatible = "microchip,mcp4141-103", > + .data = &mcp4131_cfg[MCP414x_103] }, > + { .compatible = "microchip,mcp4141-503", > + .data = &mcp4131_cfg[MCP414x_503] }, > + { .compatible = "microchip,mcp4141-104", > + .data = &mcp4131_cfg[MCP414x_104] }, > + { .compatible = "microchip,mcp4142-502", > + .data = &mcp4131_cfg[MCP414x_502] }, > + { .compatible = "microchip,mcp4142-103", > + .data = &mcp4131_cfg[MCP414x_103] }, > + { .compatible = "microchip,mcp4142-503", > + .data = &mcp4131_cfg[MCP414x_503] }, > + { .compatible = "microchip,mcp4142-104", > + .data = &mcp4131_cfg[MCP414x_104] }, > + { .compatible = "microchip,mcp4151-502", > + .data = &mcp4131_cfg[MCP415x_502] }, > + { .compatible = "microchip,mcp4151-103", > + .data = &mcp4131_cfg[MCP415x_103] }, > + { .compatible = "microchip,mcp4151-503", > + .data = &mcp4131_cfg[MCP415x_503] }, > + { .compatible = "microchip,mcp4151-104", > + .data = &mcp4131_cfg[MCP415x_104] }, > + { .compatible = "microchip,mcp4152-502", > + .data = &mcp4131_cfg[MCP415x_502] }, > + { .compatible = "microchip,mcp4152-103", > + .data = &mcp4131_cfg[MCP415x_103] }, > + { .compatible = "microchip,mcp4152-503", > + .data = &mcp4131_cfg[MCP415x_503] }, > + { .compatible = "microchip,mcp4152-104", > + .data = &mcp4131_cfg[MCP415x_104] }, > + { .compatible = "microchip,mcp4161-502", > + .data = &mcp4131_cfg[MCP416x_502] }, > + { .compatible = "microchip,mcp4161-103", > + .data = &mcp4131_cfg[MCP416x_103] }, > + { .compatible = "microchip,mcp4161-503", > + .data = &mcp4131_cfg[MCP416x_503] }, > + { .compatible = "microchip,mcp4161-104", > + .data = &mcp4131_cfg[MCP416x_104] }, > + { .compatible = "microchip,mcp4162-502", > + .data = &mcp4131_cfg[MCP416x_502] }, > + { .compatible = "microchip,mcp4162-103", > + .data = &mcp4131_cfg[MCP416x_103] }, > + { .compatible = "microchip,mcp4162-503", > + .data = &mcp4131_cfg[MCP416x_503] }, > + { .compatible = "microchip,mcp4162-104", > + .data = &mcp4131_cfg[MCP416x_104] }, > + { .compatible = "microchip,mcp4231-502", > + .data = &mcp4131_cfg[MCP423x_502] }, > + { .compatible = "microchip,mcp4231-103", > + .data = &mcp4131_cfg[MCP423x_103] }, > + { .compatible = "microchip,mcp4231-503", > + .data = &mcp4131_cfg[MCP423x_503] }, > + { .compatible = "microchip,mcp4231-104", > + .data = &mcp4131_cfg[MCP423x_104] }, > + { .compatible = "microchip,mcp4232-502", > + .data = &mcp4131_cfg[MCP423x_502] }, > + { .compatible = "microchip,mcp4232-103", > + .data = &mcp4131_cfg[MCP423x_103] }, > + { .compatible = "microchip,mcp4232-503", > + .data = &mcp4131_cfg[MCP423x_503] }, > + { .compatible = "microchip,mcp4232-104", > + .data = &mcp4131_cfg[MCP423x_104] }, > + { .compatible = "microchip,mcp4241-502", > + .data = &mcp4131_cfg[MCP424x_502] }, > + { .compatible = "microchip,mcp4241-103", > + .data = &mcp4131_cfg[MCP424x_103] }, > + { .compatible = "microchip,mcp4241-503", > + .data = &mcp4131_cfg[MCP424x_503] }, > + { .compatible = "microchip,mcp4241-104", > + .data = &mcp4131_cfg[MCP424x_104] }, > + { .compatible = "microchip,mcp4242-502", > + .data = &mcp4131_cfg[MCP424x_502] }, > + { .compatible = "microchip,mcp4242-103", > + .data = &mcp4131_cfg[MCP424x_103] }, > + { .compatible = "microchip,mcp4242-503", > + .data = &mcp4131_cfg[MCP424x_503] }, > + { .compatible = "microchip,mcp4242-104", > + .data = &mcp4131_cfg[MCP424x_104] }, > + { .compatible = "microchip,mcp4251-502", > + .data = &mcp4131_cfg[MCP425x_502] }, > + { .compatible = "microchip,mcp4251-103", > + .data = &mcp4131_cfg[MCP425x_103] }, > + { .compatible = "microchip,mcp4251-503", > + .data = &mcp4131_cfg[MCP425x_503] }, > + { .compatible = "microchip,mcp4251-104", > + .data = &mcp4131_cfg[MCP425x_104] }, > + { .compatible = "microchip,mcp4252-502", > + .data = &mcp4131_cfg[MCP425x_502] }, > + { .compatible = "microchip,mcp4252-103", > + .data = &mcp4131_cfg[MCP425x_103] }, > + { .compatible = "microchip,mcp4252-503", > + .data = &mcp4131_cfg[MCP425x_503] }, > + { .compatible = "microchip,mcp4252-104", > + .data = &mcp4131_cfg[MCP425x_104] }, > + { .compatible = "microchip,mcp4261-502", > + .data = &mcp4131_cfg[MCP426x_502] }, > + { .compatible = "microchip,mcp4261-103", > + .data = &mcp4131_cfg[MCP426x_103] }, > + { .compatible = "microchip,mcp4261-503", > + .data = &mcp4131_cfg[MCP426x_503] }, > + { .compatible = "microchip,mcp4261-104", > + .data = &mcp4131_cfg[MCP426x_104] }, > + { .compatible = "microchip,mcp4262-502", > + .data = &mcp4131_cfg[MCP426x_502] }, > + { .compatible = "microchip,mcp4262-103", > + .data = &mcp4131_cfg[MCP426x_103] }, > + { .compatible = "microchip,mcp4262-503", > + .data = &mcp4131_cfg[MCP426x_503] }, > + { .compatible = "microchip,mcp4262-104", > + .data = &mcp4131_cfg[MCP426x_104] }, > + {} > +}; > +MODULE_DEVICE_TABLE(of, mcp4131_dt_ids); > +#endif /* CONFIG_OF */ > + > +static const struct spi_device_id mcp4131_id[] = { > + { "mcp4131-502", MCP413x_502 }, > + { "mcp4131-103", MCP413x_103 }, > + { "mcp4131-503", MCP413x_503 }, > + { "mcp4131-104", MCP413x_104 }, > + { "mcp4132-502", MCP413x_502 }, > + { "mcp4132-103", MCP413x_103 }, > + { "mcp4132-503", MCP413x_503 }, > + { "mcp4132-104", MCP413x_104 }, > + { "mcp4141-502", MCP414x_502 }, > + { "mcp4141-103", MCP414x_103 }, > + { "mcp4141-503", MCP414x_503 }, > + { "mcp4141-104", MCP414x_104 }, > + { "mcp4142-502", MCP414x_502 }, > + { "mcp4142-103", MCP414x_103 }, > + { "mcp4142-503", MCP414x_503 }, > + { "mcp4142-104", MCP414x_104 }, > + { "mcp4151-502", MCP415x_502 }, > + { "mcp4151-103", MCP415x_103 }, > + { "mcp4151-503", MCP415x_503 }, > + { "mcp4151-104", MCP415x_104 }, > + { "mcp4152-502", MCP415x_502 }, > + { "mcp4152-103", MCP415x_103 }, > + { "mcp4152-503", MCP415x_503 }, > + { "mcp4152-104", MCP415x_104 }, > + { "mcp4161-502", MCP416x_502 }, > + { "mcp4161-103", MCP416x_103 }, > + { "mcp4161-503", MCP416x_503 }, > + { "mcp4161-104", MCP416x_104 }, > + { "mcp4162-502", MCP416x_502 }, > + { "mcp4162-103", MCP416x_103 }, > + { "mcp4162-503", MCP416x_503 }, > + { "mcp4162-104", MCP416x_104 }, > + { "mcp4231-502", MCP423x_502 }, > + { "mcp4231-103", MCP423x_103 }, > + { "mcp4231-503", MCP423x_503 }, > + { "mcp4231-104", MCP423x_104 }, > + { "mcp4232-502", MCP423x_502 }, > + { "mcp4232-103", MCP423x_103 }, > + { "mcp4232-503", MCP423x_503 }, > + { "mcp4232-104", MCP423x_104 }, > + { "mcp4241-502", MCP424x_502 }, > + { "mcp4241-103", MCP424x_103 }, > + { "mcp4241-503", MCP424x_503 }, > + { "mcp4241-104", MCP424x_104 }, > + { "mcp4242-502", MCP424x_502 }, > + { "mcp4242-103", MCP424x_103 }, > + { "mcp4242-503", MCP424x_503 }, > + { "mcp4242-104", MCP424x_104 }, > + { "mcp4251-502", MCP425x_502 }, > + { "mcp4251-103", MCP425x_103 }, > + { "mcp4251-503", MCP425x_503 }, > + { "mcp4251-104", MCP425x_104 }, > + { "mcp4252-502", MCP425x_502 }, > + { "mcp4252-103", MCP425x_103 }, > + { "mcp4252-503", MCP425x_503 }, > + { "mcp4252-104", MCP425x_104 }, > + { "mcp4261-502", MCP426x_502 }, > + { "mcp4261-103", MCP426x_103 }, > + { "mcp4261-503", MCP426x_503 }, > + { "mcp4261-104", MCP426x_104 }, > + { "mcp4262-502", MCP426x_502 }, > + { "mcp4262-103", MCP426x_103 }, > + { "mcp4262-503", MCP426x_503 }, > + { "mcp4262-104", MCP426x_104 }, > + {} > +}; > +MODULE_DEVICE_TABLE(spi, mcp4131_id); > + > +static struct spi_driver mcp4131_driver = { > + .driver = { > + .name = "mcp4131", > + .of_match_table = of_match_ptr(mcp4131_dt_ids), > + }, > + .probe = mcp4131_probe, > + .id_table = mcp4131_id, > +}; > + > +module_spi_driver(mcp4131_driver); > + > +MODULE_AUTHOR("Slawomir Stepien <sst@xxxxxxxxx>"); > +MODULE_DESCRIPTION("MCP4131 digital potentiometer"); > +MODULE_LICENSE("GPL v2"); > -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
