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authorAlexandru Ardelean <alexandru.ardelean@analog.com>2020-04-24 07:34:18 +0300
committerJonathan Cameron <Jonathan.Cameron@huawei.com>2020-05-10 09:35:53 +0100
commit067fda1c065ff5655fcd2600f4b9f72a6ab5b7d9 (patch)
tree5cd2d9e78adf7119be9fd543f7422f48bf2af06e /drivers/iio/pressure
parent8fe78d5261e750205e5dab0681c4d62e4b3dbc28 (diff)
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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/pressure')
-rw-r--r--drivers/iio/pressure/hid-sensor-press.c18
1 files changed, 4 insertions, 14 deletions
diff --git a/drivers/iio/pressure/hid-sensor-press.c b/drivers/iio/pressure/hid-sensor-press.c
index 953235052155..5e6663f757ae 100644
--- a/drivers/iio/pressure/hid-sensor-press.c
+++ b/drivers/iio/pressure/hid-sensor-press.c
@@ -14,8 +14,6 @@
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/iio/buffer.h>
-#include <linux/iio/trigger_consumer.h>
-#include <linux/iio/triggered_buffer.h>
#include "../common/hid-sensors/hid-sensor-trigger.h"
#define CHANNEL_SCAN_INDEX_PRESSURE 0
@@ -290,18 +288,13 @@ static int hid_press_probe(struct platform_device *pdev)
indio_dev->name = name;
indio_dev->modes = INDIO_DIRECT_MODE;
- ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
- NULL, NULL);
- if (ret) {
- dev_err(&pdev->dev, "failed to initialize trigger buffer\n");
- goto error_free_dev_mem;
- }
atomic_set(&press_state->common_attributes.data_ready, 0);
+
ret = hid_sensor_setup_trigger(indio_dev, name,
&press_state->common_attributes);
if (ret) {
dev_err(&pdev->dev, "trigger setup failed\n");
- goto error_unreg_buffer_funcs;
+ goto error_free_dev_mem;
}
ret = iio_device_register(indio_dev);
@@ -325,9 +318,7 @@ static int hid_press_probe(struct platform_device *pdev)
error_iio_unreg:
iio_device_unregister(indio_dev);
error_remove_trigger:
- hid_sensor_remove_trigger(&press_state->common_attributes);
-error_unreg_buffer_funcs:
- iio_triggered_buffer_cleanup(indio_dev);
+ hid_sensor_remove_trigger(indio_dev, &press_state->common_attributes);
error_free_dev_mem:
kfree(indio_dev->channels);
return ret;
@@ -342,8 +333,7 @@ static int hid_press_remove(struct platform_device *pdev)
sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_PRESSURE);
iio_device_unregister(indio_dev);
- hid_sensor_remove_trigger(&press_state->common_attributes);
- iio_triggered_buffer_cleanup(indio_dev);
+ hid_sensor_remove_trigger(indio_dev, &press_state->common_attributes);
kfree(indio_dev->channels);
return 0;