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path: root/drivers/iio/light/hid-sensor-als.c
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Diffstat (limited to 'drivers/iio/light/hid-sensor-als.c')
-rw-r--r--drivers/iio/light/hid-sensor-als.c107
1 files changed, 52 insertions, 55 deletions
diff --git a/drivers/iio/light/hid-sensor-als.c b/drivers/iio/light/hid-sensor-als.c
index b6cd299517d1..5a1a625d8d16 100644
--- a/drivers/iio/light/hid-sensor-als.c
+++ b/drivers/iio/light/hid-sensor-als.c
@@ -6,16 +6,11 @@
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
+#include <linux/mod_devicetable.h>
#include <linux/slab.h>
-#include <linux/delay.h>
#include <linux/hid-sensor-hub.h>
#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"
enum {
@@ -24,15 +19,26 @@ enum {
CHANNEL_SCAN_INDEX_MAX
};
+#define CHANNEL_SCAN_INDEX_TIMESTAMP CHANNEL_SCAN_INDEX_MAX
+
struct als_state {
struct hid_sensor_hub_callbacks callbacks;
struct hid_sensor_common common_attributes;
struct hid_sensor_hub_attribute_info als_illum;
- u32 illum[CHANNEL_SCAN_INDEX_MAX];
+ struct {
+ u32 illum[CHANNEL_SCAN_INDEX_MAX];
+ u64 timestamp __aligned(8);
+ } scan;
int scale_pre_decml;
int scale_post_decml;
int scale_precision;
int value_offset;
+ s64 timestamp;
+};
+
+static const u32 als_sensitivity_addresses[] = {
+ HID_USAGE_SENSOR_DATA_LIGHT,
+ HID_USAGE_SENSOR_LIGHT_ILLUM,
};
/* Channel definitions */
@@ -45,7 +51,8 @@ static const struct iio_chan_spec als_channels[] = {
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
BIT(IIO_CHAN_INFO_SCALE) |
BIT(IIO_CHAN_INFO_SAMP_FREQ) |
- BIT(IIO_CHAN_INFO_HYSTERESIS),
+ BIT(IIO_CHAN_INFO_HYSTERESIS) |
+ BIT(IIO_CHAN_INFO_HYSTERESIS_RELATIVE),
.scan_index = CHANNEL_SCAN_INDEX_INTENSITY,
},
{
@@ -54,9 +61,11 @@ static const struct iio_chan_spec als_channels[] = {
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
BIT(IIO_CHAN_INFO_SCALE) |
BIT(IIO_CHAN_INFO_SAMP_FREQ) |
- BIT(IIO_CHAN_INFO_HYSTERESIS),
+ BIT(IIO_CHAN_INFO_HYSTERESIS) |
+ BIT(IIO_CHAN_INFO_HYSTERESIS_RELATIVE),
.scan_index = CHANNEL_SCAN_INDEX_ILLUM,
- }
+ },
+ IIO_CHAN_SOFT_TIMESTAMP(CHANNEL_SCAN_INDEX_TIMESTAMP)
};
/* Adjust channel real bits based on report descriptor */
@@ -131,6 +140,10 @@ static int als_read_raw(struct iio_dev *indio_dev,
ret_type = hid_sensor_read_raw_hyst_value(
&als_state->common_attributes, val, val2);
break;
+ case IIO_CHAN_INFO_HYSTERESIS_RELATIVE:
+ ret_type = hid_sensor_read_raw_hyst_rel_value(
+ &als_state->common_attributes, val, val2);
+ break;
default:
ret_type = -EINVAL;
break;
@@ -158,6 +171,10 @@ static int als_write_raw(struct iio_dev *indio_dev,
ret = hid_sensor_write_raw_hyst_value(
&als_state->common_attributes, val, val2);
break;
+ case IIO_CHAN_INFO_HYSTERESIS_RELATIVE:
+ ret = hid_sensor_write_raw_hyst_rel_value(
+ &als_state->common_attributes, val, val2);
+ break;
default:
ret = -EINVAL;
}
@@ -170,14 +187,6 @@ static const struct iio_info als_info = {
.write_raw = &als_write_raw,
};
-/* Function to push data to buffer */
-static void hid_sensor_push_data(struct iio_dev *indio_dev, const void *data,
- int len)
-{
- dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n");
- iio_push_to_buffers(indio_dev, data);
-}
-
/* Callback handler to send event after all samples are received and captured */
static int als_proc_event(struct hid_sensor_hub_device *hsdev,
unsigned usage_id,
@@ -187,10 +196,14 @@ static int als_proc_event(struct hid_sensor_hub_device *hsdev,
struct als_state *als_state = iio_priv(indio_dev);
dev_dbg(&indio_dev->dev, "als_proc_event\n");
- if (atomic_read(&als_state->common_attributes.data_ready))
- hid_sensor_push_data(indio_dev,
- &als_state->illum,
- sizeof(als_state->illum));
+ if (atomic_read(&als_state->common_attributes.data_ready)) {
+ if (!als_state->timestamp)
+ als_state->timestamp = iio_get_time_ns(indio_dev);
+
+ iio_push_to_buffers_with_timestamp(indio_dev, &als_state->scan,
+ als_state->timestamp);
+ als_state->timestamp = 0;
+ }
return 0;
}
@@ -208,10 +221,14 @@ static int als_capture_sample(struct hid_sensor_hub_device *hsdev,
switch (usage_id) {
case HID_USAGE_SENSOR_LIGHT_ILLUM:
- als_state->illum[CHANNEL_SCAN_INDEX_INTENSITY] = sample_data;
- als_state->illum[CHANNEL_SCAN_INDEX_ILLUM] = sample_data;
+ als_state->scan.illum[CHANNEL_SCAN_INDEX_INTENSITY] = sample_data;
+ als_state->scan.illum[CHANNEL_SCAN_INDEX_ILLUM] = sample_data;
ret = 0;
break;
+ case HID_USAGE_SENSOR_TIME_TIMESTAMP:
+ als_state->timestamp = hid_sensor_convert_timestamp(&als_state->common_attributes,
+ *(s64 *)raw_data);
+ break;
default:
break;
}
@@ -247,17 +264,6 @@ static int als_parse_report(struct platform_device *pdev,
&st->als_illum,
&st->scale_pre_decml, &st->scale_post_decml);
- /* Set Sensitivity field ids, when there is no individual modifier */
- if (st->common_attributes.sensitivity.index < 0) {
- sensor_hub_input_get_attribute_info(hsdev,
- HID_FEATURE_REPORT, usage_id,
- HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
- HID_USAGE_SENSOR_DATA_LIGHT,
- &st->common_attributes.sensitivity);
- dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n",
- st->common_attributes.sensitivity.index,
- st->common_attributes.sensitivity.report_id);
- }
return ret;
}
@@ -280,14 +286,16 @@ static int hid_als_probe(struct platform_device *pdev)
als_state->common_attributes.pdev = pdev;
ret = hid_sensor_parse_common_attributes(hsdev, HID_USAGE_SENSOR_ALS,
- &als_state->common_attributes);
+ &als_state->common_attributes,
+ als_sensitivity_addresses,
+ ARRAY_SIZE(als_sensitivity_addresses));
if (ret) {
dev_err(&pdev->dev, "failed to setup common attributes\n");
return ret;
}
- indio_dev->channels = kmemdup(als_channels,
- sizeof(als_channels), GFP_KERNEL);
+ indio_dev->channels = devm_kmemdup(&pdev->dev, als_channels,
+ sizeof(als_channels), GFP_KERNEL);
if (!indio_dev->channels) {
dev_err(&pdev->dev, "failed to duplicate channels\n");
return -ENOMEM;
@@ -298,28 +306,22 @@ static int hid_als_probe(struct platform_device *pdev)
HID_USAGE_SENSOR_ALS, als_state);
if (ret) {
dev_err(&pdev->dev, "failed to setup attributes\n");
- goto error_free_dev_mem;
+ return ret;
}
indio_dev->num_channels =
ARRAY_SIZE(als_channels);
- indio_dev->dev.parent = &pdev->dev;
indio_dev->info = &als_info;
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(&als_state->common_attributes.data_ready, 0);
+
ret = hid_sensor_setup_trigger(indio_dev, name,
&als_state->common_attributes);
if (ret < 0) {
dev_err(&pdev->dev, "trigger setup failed\n");
- goto error_unreg_buffer_funcs;
+ return ret;
}
ret = iio_device_register(indio_dev);
@@ -343,11 +345,7 @@ static int hid_als_probe(struct platform_device *pdev)
error_iio_unreg:
iio_device_unregister(indio_dev);
error_remove_trigger:
- hid_sensor_remove_trigger(&als_state->common_attributes);
-error_unreg_buffer_funcs:
- iio_triggered_buffer_cleanup(indio_dev);
-error_free_dev_mem:
- kfree(indio_dev->channels);
+ hid_sensor_remove_trigger(indio_dev, &als_state->common_attributes);
return ret;
}
@@ -360,9 +358,7 @@ static int hid_als_remove(struct platform_device *pdev)
sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_ALS);
iio_device_unregister(indio_dev);
- hid_sensor_remove_trigger(&als_state->common_attributes);
- iio_triggered_buffer_cleanup(indio_dev);
- kfree(indio_dev->channels);
+ hid_sensor_remove_trigger(indio_dev, &als_state->common_attributes);
return 0;
}
@@ -390,3 +386,4 @@ module_platform_driver(hid_als_platform_driver);
MODULE_DESCRIPTION("HID Sensor ALS");
MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>");
MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_HID);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.