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Release 4.7 drivers/iio/common/hid-sensors/hid-sensor-trigger.c

/*
 * HID Sensors Driver
 * Copyright (c) 2012, Intel Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
 *
 */
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/hid-sensor-hub.h>
#include <linux/iio/iio.h>
#include <linux/iio/trigger.h>
#include <linux/iio/sysfs.h>
#include "hid-sensor-trigger.h"


static int _hid_sensor_power_state(struct hid_sensor_common *st, bool state) { int state_val; int report_val; s32 poll_value = 0; if (state) { if (!atomic_read(&st->user_requested_state)) return 0; if (sensor_hub_device_open(st->hsdev)) return -EIO; atomic_inc(&st->data_ready); state_val = hid_sensor_get_usage_index(st->hsdev, st->power_state.report_id, st->power_state.index, HID_USAGE_SENSOR_PROP_POWER_STATE_D0_FULL_POWER_ENUM); report_val = hid_sensor_get_usage_index(st->hsdev, st->report_state.report_id, st->report_state.index, HID_USAGE_SENSOR_PROP_REPORTING_STATE_ALL_EVENTS_ENUM); poll_value = hid_sensor_read_poll_value(st); } else { int val; val = atomic_dec_if_positive(&st->data_ready); if (val < 0) return 0; sensor_hub_device_close(st->hsdev); state_val = hid_sensor_get_usage_index(st->hsdev, st->power_state.report_id, st->power_state.index, HID_USAGE_SENSOR_PROP_POWER_STATE_D4_POWER_OFF_ENUM); report_val = hid_sensor_get_usage_index(st->hsdev, st->report_state.report_id, st->report_state.index, HID_USAGE_SENSOR_PROP_REPORTING_STATE_NO_EVENTS_ENUM); } if (state_val >= 0) { state_val += st->power_state.logical_minimum; sensor_hub_set_feature(st->hsdev, st->power_state.report_id, st->power_state.index, sizeof(state_val), &state_val); } if (report_val >= 0) { report_val += st->report_state.logical_minimum; sensor_hub_set_feature(st->hsdev, st->report_state.report_id, st->report_state.index, sizeof(report_val), &report_val); } sensor_hub_get_feature(st->hsdev, st->power_state.report_id, st->power_state.index, sizeof(state_val), &state_val); if (state && poll_value) msleep_interruptible(poll_value * 2); return 0; }

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srinivas pandruvadasrinivas pandruvada30493.25%990.00%
archana patniarchana patni226.75%110.00%
Total326100.00%10100.00%

EXPORT_SYMBOL(hid_sensor_power_state);
int hid_sensor_power_state(struct hid_sensor_common *st, bool state) { #ifdef CONFIG_PM int ret; atomic_set(&st->user_requested_state, state); if (state) ret = pm_runtime_get_sync(&st->pdev->dev); else { pm_runtime_mark_last_busy(&st->pdev->dev); ret = pm_runtime_put_autosuspend(&st->pdev->dev); } if (ret < 0) { if (state) pm_runtime_put_noidle(&st->pdev->dev); return ret; } return 0; #else atomic_set(&st->user_requested_state, state); return _hid_sensor_power_state(st, state); #endif }

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srinivas pandruvadasrinivas pandruvada120100.00%2100.00%
Total120100.00%2100.00%


static int hid_sensor_data_rdy_trigger_set_state(struct iio_trigger *trig, bool state) { return hid_sensor_power_state(iio_trigger_get_drvdata(trig), state); }

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srinivas pandruvadasrinivas pandruvada25100.00%1100.00%
Total25100.00%1100.00%


void hid_sensor_remove_trigger(struct hid_sensor_common *attrb) { iio_trigger_unregister(attrb->trigger); iio_trigger_free(attrb->trigger); }

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srinivas pandruvadasrinivas pandruvada24100.00%2100.00%
Total24100.00%2100.00%

EXPORT_SYMBOL(hid_sensor_remove_trigger); static const struct iio_trigger_ops hid_sensor_trigger_ops = { .owner = THIS_MODULE, .set_trigger_state = &hid_sensor_data_rdy_trigger_set_state, };
int hid_sensor_setup_trigger(struct iio_dev *indio_dev, const char *name, struct hid_sensor_common *attrb) { int ret; struct iio_trigger *trig; 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; } trig->dev.parent = indio_dev->dev.parent; iio_trigger_set_drvdata(trig, attrb); trig->ops = &hid_sensor_trigger_ops; ret = iio_trigger_register(trig); if (ret) { dev_err(&indio_dev->dev, "Trigger Register Failed\n"); goto error_free_trig; } attrb->trigger = trig; indio_dev->trig = iio_trigger_get(trig); ret = pm_runtime_set_active(&indio_dev->dev); if (ret) goto error_unreg_trigger; iio_device_set_drvdata(indio_dev, attrb); pm_suspend_ignore_children(&attrb->pdev->dev, true); pm_runtime_enable(&attrb->pdev->dev); /* Default to 3 seconds, but can be changed from sysfs */ pm_runtime_set_autosuspend_delay(&attrb->pdev->dev, 3000); pm_runtime_use_autosuspend(&attrb->pdev->dev); return ret; error_unreg_trigger: iio_trigger_unregister(trig); error_free_trig: iio_trigger_free(trig); error_ret: return ret; }

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PersonTokensPropCommitsCommitProp
srinivas pandruvadasrinivas pandruvada22097.78%466.67%
lars-peter clausenlars-peter clausen41.78%116.67%
alexander holleralexander holler10.44%116.67%
Total225100.00%6100.00%

EXPORT_SYMBOL(hid_sensor_setup_trigger); #ifdef CONFIG_PM
static int hid_sensor_suspend(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct iio_dev *indio_dev = platform_get_drvdata(pdev); struct hid_sensor_common *attrb = iio_device_get_drvdata(indio_dev); return _hid_sensor_power_state(attrb, false); }

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srinivas pandruvadasrinivas pandruvada49100.00%1100.00%
Total49100.00%1100.00%


static int hid_sensor_resume(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct iio_dev *indio_dev = platform_get_drvdata(pdev); struct hid_sensor_common *attrb = iio_device_get_drvdata(indio_dev); return _hid_sensor_power_state(attrb, true); }

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srinivas pandruvadasrinivas pandruvada49100.00%1100.00%
Total49100.00%1100.00%

#endif const struct dev_pm_ops hid_sensor_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(hid_sensor_suspend, hid_sensor_resume) SET_RUNTIME_PM_OPS(hid_sensor_suspend, hid_sensor_resume, NULL) }; EXPORT_SYMBOL(hid_sensor_pm_ops); MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>"); MODULE_DESCRIPTION("HID Sensor trigger processing"); MODULE_LICENSE("GPL");

Overall Contributors

PersonTokensPropCommitsCommitProp
srinivas pandruvadasrinivas pandruvada90997.12%1178.57%
archana patniarchana patni222.35%17.14%
lars-peter clausenlars-peter clausen40.43%17.14%
alexander holleralexander holler10.11%17.14%
Total936100.00%14100.00%
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