100 lines
2.8 KiB
Diff
100 lines
2.8 KiB
Diff
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From 1844165d5b92f1ef61a210e7ed206fd3bb2dacdd Mon Sep 17 00:00:00 2001
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From: Ondrej Jirman <megi@xff.cz>
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Date: Sat, 29 Oct 2022 23:15:08 +0200
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Subject: [PATCH 338/389] iio: af8133j: Add support for buffer
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This allows better way to capture all channels at once and deliver
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data to userspace.
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Signed-off-by: Ondrej Jirman <megi@xff.cz>
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---
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drivers/iio/magnetometer/af8133j.c | 39 ++++++++++++++++++++++++++++--
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1 file changed, 37 insertions(+), 2 deletions(-)
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diff --git a/drivers/iio/magnetometer/af8133j.c b/drivers/iio/magnetometer/af8133j.c
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index ef74b4c7ae4e..7a0e16fa0ea4 100644
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--- a/drivers/iio/magnetometer/af8133j.c
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+++ b/drivers/iio/magnetometer/af8133j.c
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@@ -16,6 +16,8 @@
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#include <linux/iio/iio.h>
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#include <linux/iio/sysfs.h>
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+#include <linux/iio/trigger_consumer.h>
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+#include <linux/iio/triggered_buffer.h>
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#define AF8133J_DRV_NAME "af8133j"
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@@ -77,20 +79,29 @@ static const struct iio_chan_spec_ext_info af8133j_ext_info[] = {
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{ }
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};
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+// .info_mask_shared_by_type = , \
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+
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#define AF8133J_CHANNEL(_axis) { \
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.type = IIO_MAGN, \
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.modified = 1, \
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.channel2 = IIO_MOD_ ## _axis, \
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.address = AXIS_ ## _axis, \
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- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
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- .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
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+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), \
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.ext_info = af8133j_ext_info, \
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+ .scan_index = AXIS_ ## _axis, \
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+ .scan_type = { \
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+ .sign = 's', \
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+ .realbits = 16, \
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+ .storagebits = 16, \
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+ .endianness = IIO_LE, \
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+ }, \
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}
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static const struct iio_chan_spec af8133j_channels[] = {
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AF8133J_CHANNEL(X),
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AF8133J_CHANNEL(Y),
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AF8133J_CHANNEL(Z),
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+ IIO_CHAN_SOFT_TIMESTAMP(3),
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};
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static int af8133j_power_up(struct af8133j_data *data)
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@@ -252,6 +263,25 @@ static const struct iio_info af8133j_info = {
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.read_raw = af8133j_read_raw,
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};
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+irqreturn_t af8133j_trigger_handler(int irq, void *p)
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+{
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+ struct iio_poll_func *pf = p;
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+ struct iio_dev *indio_dev = pf->indio_dev;
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+ struct af8133j_data *sdata = iio_priv(indio_dev);
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+ s64 timestamp = iio_get_time_ns(indio_dev);
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+ u8 buf[2 * 3 + 8];
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+ int ret;
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+
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+ ret = af8133j_read_measurement(sdata, (__le16*)buf);
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+ if (ret < 0)
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+ return ret;
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+
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+ iio_push_to_buffers_with_timestamp(indio_dev, buf, timestamp);
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+ iio_trigger_notify_done(indio_dev->trig);
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+
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+ return IRQ_HANDLED;
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+}
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+
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static const struct regmap_config af8133j_regmap_config = {
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.name = "af8133j_regmap",
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@@ -317,6 +347,11 @@ static int af8133j_probe(struct i2c_client *client,
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indio_dev->num_channels = ARRAY_SIZE(af8133j_channels);
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indio_dev->modes = INDIO_DIRECT_MODE;
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+ ret = devm_iio_triggered_buffer_setup(dev, indio_dev,
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+ NULL, &af8133j_trigger_handler, NULL);
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+ if (ret < 0)
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+ return ret;
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+
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ret = devm_iio_device_register(dev, indio_dev);
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if (ret)
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return dev_err_probe(dev, ret,
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--
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2.35.3
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