github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-31 10:33:41 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

iio: adc: ad7606: add support for writing registers when using backend

Browse Source 
Add the logic for effectively enabling the software mode for the
iio-backend, i.e. enabling the software mode channel configuration and
implementing the register writing functions.

Signed-off-by: Guillaume Stols <gstols@baylibre.com>
Co-developed-by: Angelo Dureghello <adureghello@baylibre.com>
Signed-off-by: Angelo Dureghello <adureghello@baylibre.com>
Link: https://patch.msgid.link/20250210-wip-bl-ad7606_add_backend_sw_mode-v4-9-160df18b1da7@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Guillaume Stols 2025-02-10 17:10:59 +01:00 committed by Jonathan Cameron
parent 5efb0a3cc6
commit ac856912f2
2 changed files with 63 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
drivers/iio/adc/ad7606.h
View File

@ -96,6 +96,21 @@
BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), \
0, 0, 16)
#define AD7606_BI_SW_CHANNEL(num) \
AD760X_CHANNEL(num, \
/* mask separate */ \
BIT(IIO_CHAN_INFO_SCALE), \
/* mask type */ \
0, \
/* mask all */ \
BIT(IIO_CHAN_INFO_SAMP_FREQ) | \
BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), \
/* mask separate available */ \
BIT(IIO_CHAN_INFO_SCALE), \
/* mask all available */ \
BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), \
16)
struct ad7606_state;
typedef int (*ad7606_scale_setup_cb_t)(struct iio_dev *indio_dev,

52
drivers/iio/adc/ad7606_par.c
View File

@ -19,6 +19,7 @@
#include <linux/iio/iio.h>
#include "ad7606.h"
#include "ad7606_bus_iface.h"
static const struct iio_chan_spec ad7606b_bi_channels[] = {
AD7606_BI_CHANNEL(0),
@ -31,7 +32,19 @@ static const struct iio_chan_spec ad7606b_bi_channels[] = {
AD7606_BI_CHANNEL(7),
};
static int ad7606_bi_update_scan_mode(struct iio_dev *indio_dev, const unsigned long *scan_mask)
static const struct iio_chan_spec ad7606b_bi_sw_channels[] = {
AD7606_BI_SW_CHANNEL(0),
AD7606_BI_SW_CHANNEL(1),
AD7606_BI_SW_CHANNEL(2),
AD7606_BI_SW_CHANNEL(3),
AD7606_BI_SW_CHANNEL(4),
AD7606_BI_SW_CHANNEL(5),
AD7606_BI_SW_CHANNEL(6),
AD7606_BI_SW_CHANNEL(7),
};
static int ad7606_par_bus_update_scan_mode(struct iio_dev *indio_dev,
const unsigned long *scan_mask)
{
struct ad7606_state *st = iio_priv(indio_dev);
unsigned int c, ret;
@ -48,7 +61,8 @@ static int ad7606_bi_update_scan_mode(struct iio_dev *indio_dev, const unsigned
return 0;
}
static int ad7606_bi_setup_iio_backend(struct device *dev, struct iio_dev *indio_dev)
static int ad7606_par_bus_setup_iio_backend(struct device *dev,
struct iio_dev *indio_dev)
{
struct ad7606_state *st = iio_priv(indio_dev);
unsigned int ret, c;
@ -86,9 +100,39 @@ static int ad7606_bi_setup_iio_backend(struct device *dev, struct iio_dev *indio
return 0;
}
static int ad7606_par_bus_reg_read(struct ad7606_state *st, unsigned int addr)
{
struct ad7606_platform_data *pdata = st->dev->platform_data;
int val, ret;
ret = pdata->bus_reg_read(st->back, addr, &val);
if (ret)
return ret;
return val;
}
static int ad7606_par_bus_reg_write(struct ad7606_state *st, unsigned int addr,
unsigned int val)
{
struct ad7606_platform_data *pdata = st->dev->platform_data;
return pdata->bus_reg_write(st->back, addr, val);
}
static int ad7606_par_bus_sw_mode_config(struct iio_dev *indio_dev)
{
indio_dev->channels = ad7606b_bi_sw_channels;
return 0;
}
static const struct ad7606_bus_ops ad7606_bi_bops = {
.iio_backend_config = ad7606_bi_setup_iio_backend,
.update_scan_mode = ad7606_bi_update_scan_mode,
.iio_backend_config = ad7606_par_bus_setup_iio_backend,
.update_scan_mode = ad7606_par_bus_update_scan_mode,
.reg_read = ad7606_par_bus_reg_read,
.reg_write = ad7606_par_bus_reg_write,
.sw_mode_config = ad7606_par_bus_sw_mode_config,
};
static int ad7606_par16_read_block(struct device *dev,