projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 73c6768b | 1 | /* |
| 2 | * HID Sensors Driver | |
| 3 | * Copyright (c) 2012, Intel Corporation. | |
| 4 | * | |
| 5 | * This program is free software; you can redistribute it and/or modify it | |
| 6 | * under the terms and conditions of the GNU General Public License, | |
| 7 | * version 2, as published by the Free Software Foundation. | |
| 8 | * | |
| 9 | * This program is distributed in the hope it will be useful, but WITHOUT | |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
| 12 | * more details. | |
| 13 | * | |
| 14 | * You should have received a copy of the GNU General Public License along with | |
| 15 | * this program; if not, write to the Free Software Foundation, Inc., | |
| 16 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
| 17 | * | |
| 18 | */ | |
| 19 | #include <linux/device.h> | |
| 20 | #include <linux/platform_device.h> | |
| 21 | #include <linux/module.h> | |
| 22 | #include <linux/interrupt.h> | |
| 23 | #include <linux/irq.h> | |
| 24 | #include <linux/slab.h> | |
| 25 | #include <linux/hid-sensor-hub.h> | |
| 26 | #include <linux/iio/iio.h> | |
| 27 | #include <linux/iio/trigger.h> | |
| 28 | #include <linux/iio/sysfs.h> | |
| 73c6768b | 29 | #include "hid-sensor-trigger.h" |
| 30 | ||
| 31 | static int hid_sensor_data_rdy_trigger_set_state(struct iio_trigger *trig, | |
| 32 | bool state) | |
| 33 | { | |
| 1e9663c6 | 34 | struct hid_sensor_common *st = iio_trigger_get_drvdata(trig); |
| 73c6768b | 35 | int state_val; |
| 36 | ||
| 7d3c192d SP |
37 | if (state) { |
| 38 | if (sensor_hub_device_open(st->hsdev)) | |
| 39 | return -EIO; | |
| 40 | } else | |
| 41 | sensor_hub_device_close(st->hsdev); | |
| 42 | ||
| 73c6768b | 43 | state_val = state ? 1 : 0; |
| 69bcd3bf KS |
44 | if (IS_ENABLED(CONFIG_HID_SENSOR_ENUM_BASE_QUIRKS)) |
| 45 | ++state_val; | |
| 73c6768b | 46 | st->data_ready = state; |
| 47 | sensor_hub_set_feature(st->hsdev, st->power_state.report_id, | |
| 48 | st->power_state.index, | |
| 49 | (s32)state_val); | |
| 50 | ||
| 51 | sensor_hub_set_feature(st->hsdev, st->report_state.report_id, | |
| 52 | st->report_state.index, | |
| 53 | (s32)state_val); | |
| 54 | ||
| 55 | return 0; | |
| 56 | } | |
| 57 | ||
| 58 | void hid_sensor_remove_trigger(struct iio_dev *indio_dev) | |
| 59 | { | |
| 60 | iio_trigger_unregister(indio_dev->trig); | |
| 61 | iio_trigger_free(indio_dev->trig); | |
| f07b60b7 | 62 | indio_dev->trig = NULL; |
| 73c6768b | 63 | } |
| 64 | EXPORT_SYMBOL(hid_sensor_remove_trigger); | |
| 65 | ||
| 66 | static const struct iio_trigger_ops hid_sensor_trigger_ops = { | |
| 67 | .owner = THIS_MODULE, | |
| 68 | .set_trigger_state = &hid_sensor_data_rdy_trigger_set_state, | |
| 69 | }; | |
| 70 | ||
| 71 | int hid_sensor_setup_trigger(struct iio_dev *indio_dev, const char *name, | |
| e07c6d17 | 72 | struct hid_sensor_common *attrb) |
| 73c6768b | 73 | { |
| 74 | int ret; | |
| 75 | struct iio_trigger *trig; | |
| 76 | ||
| 77 | trig = iio_trigger_alloc("%s-dev%d", name, indio_dev->id); | |
| 78 | if (trig == NULL) { | |
| 79 | dev_err(&indio_dev->dev, "Trigger Allocate Failed\n"); | |
| 80 | ret = -ENOMEM; | |
| 81 | goto error_ret; | |
| 82 | } | |
| 83 | ||
| 84 | trig->dev.parent = indio_dev->dev.parent; | |
| 1e9663c6 | 85 | iio_trigger_set_drvdata(trig, attrb); |
| 73c6768b | 86 | trig->ops = &hid_sensor_trigger_ops; |
| 87 | ret = iio_trigger_register(trig); | |
| 88 | ||
| 89 | if (ret) { | |
| 90 | dev_err(&indio_dev->dev, "Trigger Register Failed\n"); | |
| 91 | goto error_free_trig; | |
| 92 | } | |
| 93 | indio_dev->trig = trig; | |
| 94 | ||
| 95 | return ret; | |
| 96 | ||
| 97 | error_free_trig: | |
| 98 | iio_trigger_free(trig); | |
| 99 | error_ret: | |
| 100 | return ret; | |
| 101 | } | |
| 102 | EXPORT_SYMBOL(hid_sensor_setup_trigger); | |
| 103 | ||
| 104 | MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>"); | |
| 105 | MODULE_DESCRIPTION("HID Sensor trigger processing"); | |
| 106 | MODULE_LICENSE("GPL"); |