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Message-Id: <20200327223443.6006-12-gwendal@chromium.org>
Date: Fri, 27 Mar 2020 15:34:42 -0700
From: Gwendal Grignou <gwendal@...omium.org>
To: bleung@...omium.org, enric.balletbo@...labora.com,
Jonathan.Cameron@...wei.com
Cc: linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
Gwendal Grignou <gwendal@...omium.org>
Subject: [PATCH v7 11/12] iio: cros_ec: Use Hertz as unit for sampling frequency
To be compliant with other sensors, set and get sensor sampling
frequency in Hz, not mHz.
Fixes: ae7b02ad2f32 ("iio: common: cros_ec_sensors: Expose
cros_ec_sensors frequency range via iio sysfs")
Acked-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
Signed-off-by: Gwendal Grignou <gwendal@...omium.org>
---
No changes in v6 and v7.
Changes in v5:
Added ack.
Changes in v4:
- Check patch with --strict option
Alignement
No changes in v3.
No changes in v2.
.../cros_ec_sensors/cros_ec_sensors_core.c | 32 +++++++++++--------
.../linux/iio/common/cros_ec_sensors_core.h | 6 ++--
2 files changed, 22 insertions(+), 16 deletions(-)
diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
index 67e8eff038cf5..c831915ca7e56 100644
--- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
+++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
@@ -253,6 +253,7 @@ int cros_ec_sensors_core_init(struct platform_device *pdev,
struct cros_ec_dev *ec = sensor_hub->ec;
struct cros_ec_sensor_platform *sensor_platform = dev_get_platdata(dev);
u32 ver_mask;
+ int frequencies[ARRAY_SIZE(state->frequencies) / 2] = { 0 };
int ret, i;
platform_set_drvdata(pdev, indio_dev);
@@ -301,20 +302,22 @@ int cros_ec_sensors_core_init(struct platform_device *pdev,
state->calib[i].scale = MOTION_SENSE_DEFAULT_SCALE;
/* 0 is a correct value used to stop the device */
- state->frequencies[0] = 0;
if (state->msg->version < 3) {
get_default_min_max_freq(state->resp->info.type,
- &state->frequencies[1],
- &state->frequencies[2],
+ &frequencies[1],
+ &frequencies[2],
&state->fifo_max_event_count);
} else {
- state->frequencies[1] =
- state->resp->info_3.min_frequency;
- state->frequencies[2] =
- state->resp->info_3.max_frequency;
+ frequencies[1] = state->resp->info_3.min_frequency;
+ frequencies[2] = state->resp->info_3.max_frequency;
state->fifo_max_event_count =
state->resp->info_3.fifo_max_event_count;
}
+ for (i = 0; i < ARRAY_SIZE(frequencies); i++) {
+ state->frequencies[2 * i] = frequencies[i] / 1000;
+ state->frequencies[2 * i + 1] =
+ (frequencies[i] % 1000) * 1000;
+ }
if (cros_ec_check_features(ec, EC_FEATURE_MOTION_SENSE_FIFO)) {
/*
@@ -728,7 +731,7 @@ int cros_ec_sensors_core_read(struct cros_ec_sensors_core_state *st,
struct iio_chan_spec const *chan,
int *val, int *val2, long mask)
{
- int ret;
+ int ret, frequency;
switch (mask) {
case IIO_CHAN_INFO_SAMP_FREQ:
@@ -740,8 +743,10 @@ int cros_ec_sensors_core_read(struct cros_ec_sensors_core_state *st,
if (ret)
break;
- *val = st->resp->sensor_odr.ret;
- ret = IIO_VAL_INT;
+ frequency = st->resp->sensor_odr.ret;
+ *val = frequency / 1000;
+ *val2 = (frequency % 1000) * 1000;
+ ret = IIO_VAL_INT_PLUS_MICRO;
break;
default:
ret = -EINVAL;
@@ -776,7 +781,7 @@ int cros_ec_sensors_core_read_avail(struct iio_dev *indio_dev,
case IIO_CHAN_INFO_SAMP_FREQ:
*length = ARRAY_SIZE(state->frequencies);
*vals = (const int *)&state->frequencies;
- *type = IIO_VAL_INT;
+ *type = IIO_VAL_INT_PLUS_MICRO;
return IIO_AVAIL_LIST;
}
@@ -798,12 +803,13 @@ int cros_ec_sensors_core_write(struct cros_ec_sensors_core_state *st,
struct iio_chan_spec const *chan,
int val, int val2, long mask)
{
- int ret;
+ int ret, frequency;
switch (mask) {
case IIO_CHAN_INFO_SAMP_FREQ:
+ frequency = val * 1000 + val2 / 1000;
st->param.cmd = MOTIONSENSE_CMD_SENSOR_ODR;
- st->param.sensor_odr.data = val;
+ st->param.sensor_odr.data = frequency;
/* Always roundup, so caller gets at least what it asks for. */
st->param.sensor_odr.roundup = 1;
diff --git a/include/linux/iio/common/cros_ec_sensors_core.h b/include/linux/iio/common/cros_ec_sensors_core.h
index bc26ae2e32729..7bc961defa87e 100644
--- a/include/linux/iio/common/cros_ec_sensors_core.h
+++ b/include/linux/iio/common/cros_ec_sensors_core.h
@@ -51,6 +51,8 @@ typedef irqreturn_t (*cros_ec_sensors_capture_t)(int irq, void *p);
* is always 8-byte aligned.
* @read_ec_sensors_data: function used for accessing sensors values
* @fifo_max_event_count: Size of the EC sensor FIFO
+ * @frequencies: Table of known available frequencies:
+ * 0, Min and Max in mHz
*/
struct cros_ec_sensors_core_state {
struct cros_ec_device *ec;
@@ -74,9 +76,7 @@ struct cros_ec_sensors_core_state {
unsigned long scan_mask, s16 *data);
u32 fifo_max_event_count;
-
- /* Table of known available frequencies : 0, Min and Max in mHz */
- int frequencies[3];
+ int frequencies[6];
};
int cros_ec_sensors_read_lpc(struct iio_dev *indio_dev, unsigned long scan_mask,
--
2.26.0.rc2.310.g2932bb562d-goog
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