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author | Alexandru Ardelean <alexandru.ardelean@analog.com> | 2020-04-24 07:34:18 +0300 |
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committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2020-05-10 09:35:53 +0100 |
commit | 067fda1c065ff5655fcd2600f4b9f72a6ab5b7d9 (patch) | |
tree | 5cd2d9e78adf7119be9fd543f7422f48bf2af06e /drivers/iio/common | |
parent | 8fe78d5261e750205e5dab0681c4d62e4b3dbc28 (diff) | |
download | linux-067fda1c065ff5655fcd2600f4b9f72a6ab5b7d9.tar.gz linux-067fda1c065ff5655fcd2600f4b9f72a6ab5b7d9.tar.bz2 linux-067fda1c065ff5655fcd2600f4b9f72a6ab5b7d9.zip |
iio: hid-sensors: move triggered buffer setup into hid_sensor_setup_trigger
The main intent here is to get rid of the iio_buffer_set_attrs() helper, or
at least rework it's usage a bit.
The problem with that helper is that it needs a pointer to the buffer,
which makes supporting multiple buffers per IIO device a bit more
cumbersome.
The hid_sensor_setup_trigger() is pretty much used in the same way:
- iio_triggered_buffer_setup() gets called before
- then hid_sensor_setup_trigger() and hid_sensor_setup_batch_mode() gets
called which may attach some fifo attributes
This change merges the 2 together under the hid_sensor_setup_trigger()
function. Only the &iio_pollfunc_store_time is passed to all devices, so
it's not even required to pass it explicitly outside of the common
hid_sensor_setup_trigger() function.
Moving the devm_iio_triggered_buffer_setup/cleanup() calls into the common
place code can help the rework of the buffer code, since it is in one
place.
One detail of the change is that there are 2 drivers that use
devm_iio_triggered_buffer_setup(). That function gets implicitly
replaced with iio_triggered_buffer_setup()/cleanup(), but since all drivers
call both hid_sensor_setup_trigger9) & hid_sensor_remove_trigger() trigger,
the iio_triggered_buffer_cleanup() piggy backs on the
hid_sensor_remove_trigger() call, which should cover the cleanup.
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/common')
-rw-r--r-- | drivers/iio/common/hid-sensors/hid-sensor-trigger.c | 18 | ||||
-rw-r--r-- | drivers/iio/common/hid-sensors/hid-sensor-trigger.h | 3 |
2 files changed, 17 insertions, 4 deletions
diff --git a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c index 906d87780419..ff375790b7e8 100644 --- a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c +++ b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c @@ -13,6 +13,8 @@ #include <linux/hid-sensor-hub.h> #include <linux/iio/iio.h> #include <linux/iio/trigger.h> +#include <linux/iio/triggered_buffer.h> +#include <linux/iio/trigger_consumer.h> #include <linux/iio/buffer.h> #include <linux/iio/sysfs.h> #include "hid-sensor-trigger.h" @@ -222,7 +224,8 @@ static int hid_sensor_data_rdy_trigger_set_state(struct iio_trigger *trig, return hid_sensor_power_state(iio_trigger_get_drvdata(trig), state); } -void hid_sensor_remove_trigger(struct hid_sensor_common *attrb) +void hid_sensor_remove_trigger(struct iio_dev *indio_dev, + struct hid_sensor_common *attrb) { if (atomic_read(&attrb->runtime_pm_enable)) pm_runtime_disable(&attrb->pdev->dev); @@ -233,6 +236,7 @@ void hid_sensor_remove_trigger(struct hid_sensor_common *attrb) cancel_work_sync(&attrb->work); iio_trigger_unregister(attrb->trigger); iio_trigger_free(attrb->trigger); + iio_triggered_buffer_cleanup(indio_dev); } EXPORT_SYMBOL(hid_sensor_remove_trigger); @@ -246,11 +250,18 @@ int hid_sensor_setup_trigger(struct iio_dev *indio_dev, const char *name, int ret; struct iio_trigger *trig; + ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time, + NULL, NULL); + if (ret) { + dev_err(&indio_dev->dev, "Triggered Buffer Setup Failed\n"); + return ret; + } + trig = iio_trigger_alloc("%s-dev%d", name, indio_dev->id); if (trig == NULL) { dev_err(&indio_dev->dev, "Trigger Allocate Failed\n"); ret = -ENOMEM; - goto error_ret; + goto error_triggered_buffer_cleanup; } trig->dev.parent = indio_dev->dev.parent; @@ -284,7 +295,8 @@ error_unreg_trigger: iio_trigger_unregister(trig); error_free_trig: iio_trigger_free(trig); -error_ret: +error_triggered_buffer_cleanup: + iio_triggered_buffer_cleanup(indio_dev); return ret; } EXPORT_SYMBOL(hid_sensor_setup_trigger); diff --git a/drivers/iio/common/hid-sensors/hid-sensor-trigger.h b/drivers/iio/common/hid-sensors/hid-sensor-trigger.h index f47b940ff170..bb45cc89e551 100644 --- a/drivers/iio/common/hid-sensors/hid-sensor-trigger.h +++ b/drivers/iio/common/hid-sensors/hid-sensor-trigger.h @@ -13,7 +13,8 @@ extern const struct dev_pm_ops hid_sensor_pm_ops; int hid_sensor_setup_trigger(struct iio_dev *indio_dev, const char *name, struct hid_sensor_common *attrb); -void hid_sensor_remove_trigger(struct hid_sensor_common *attrb); +void hid_sensor_remove_trigger(struct iio_dev *indio_dev, + struct hid_sensor_common *attrb); int hid_sensor_power_state(struct hid_sensor_common *st, bool state); #endif |