HID: sensors: introduce sensor framework
Adding processing for HID Sensor usage table as defined by HID 1.12, Request #: HUTRR39, dated 05 May, 2011. This driver uses HID driver framework to register, send and receive events. This uses MFD framework, so that actual processing for a specific usage id can be done in a different driver. For example an accelerometer driver can be a separate driver and use the interface provided by this driver to register for events. Signed-off-by: srinivas pandruvada <srinivas.pandruvada@intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
srinivas pandruvada
Jonathan Cameron
Родитель
c8147d9ea1
Коммит
401ca24fb3
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@ -690,6 +690,20 @@ config HID_ZYDACRON
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---help---
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Support for Zydacron remote control.
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config HID_SENSOR_HUB
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tristate "HID Sensors framework support"
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depends on USB_HID
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select MFD_CORE
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default n
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-- help---
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Support for HID Sensor framework. This creates a MFD instance
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for a sensor hub and identifies all the sensors connected to it.
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Each sensor is registered as a MFD cell, so that sensor specific
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processing can be done in a separate driver. Each sensor
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drivers can use the service provided by this driver to register
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for events and handle data streams. Each sensor driver can format
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data and present to user mode using input or IIO interface.
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endmenu
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endif # HID
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@ -91,6 +91,7 @@ obj-$(CONFIG_HID_ZYDACRON) += hid-zydacron.o
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obj-$(CONFIG_HID_WACOM) += hid-wacom.o
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obj-$(CONFIG_HID_WALTOP) += hid-waltop.o
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obj-$(CONFIG_HID_WIIMOTE) += hid-wiimote.o
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obj-$(CONFIG_HID_SENSOR_HUB) += hid-sensor-hub.o
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obj-$(CONFIG_USB_HID) += usbhid/
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obj-$(CONFIG_USB_MOUSE) += usbhid/
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@ -0,0 +1,695 @@
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/*
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* HID Sensors Driver
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* Copyright (c) 2012, Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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#include <linux/device.h>
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#include <linux/hid.h>
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#include <linux/usb.h>
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#include "usbhid/usbhid.h"
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/mfd/core.h>
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#include <linux/list.h>
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#include <linux/hid-sensor-ids.h>
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#include <linux/hid-sensor-hub.h>
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#include "hid-ids.h"
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/**
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* struct sensor_hub_pending - Synchronous read pending information
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* @status: Pending status true/false.
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* @ready: Completion synchronization data.
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* @usage_id: Usage id for physical device, E.g. Gyro usage id.
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* @attr_usage_id: Usage Id of a field, E.g. X-AXIS for a gyro.
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* @raw_size: Response size for a read request.
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* @raw_data: Place holder for received response.
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*/
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struct sensor_hub_pending {
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bool status;
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struct completion ready;
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u32 usage_id;
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u32 attr_usage_id;
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int raw_size;
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u8 *raw_data;
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};
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/**
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* struct sensor_hub_data - Hold a instance data for a HID hub device
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* @hsdev: Stored hid instance for current hub device.
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* @mutex: Mutex to serialize synchronous request.
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* @lock: Spin lock to protect pending request structure.
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* @pending: Holds information of pending sync read request.
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* @dyn_callback_list: Holds callback function
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* @dyn_callback_lock: spin lock to protect callback list
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* @hid_sensor_hub_client_devs: Stores all MFD cells for a hub instance.
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* @hid_sensor_client_cnt: Number of MFD cells, (no of sensors attached).
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*/
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struct sensor_hub_data {
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struct hid_sensor_hub_device *hsdev;
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struct mutex mutex;
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spinlock_t lock;
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struct sensor_hub_pending pending;
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struct list_head dyn_callback_list;
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spinlock_t dyn_callback_lock;
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struct mfd_cell *hid_sensor_hub_client_devs;
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int hid_sensor_client_cnt;
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};
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/**
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* struct hid_sensor_hub_callbacks_list - Stores callback list
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* @list: list head.
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* @usage_id: usage id for a physical device.
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* @usage_callback: Stores registered callback functions.
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* @priv: Private data for a physical device.
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*/
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struct hid_sensor_hub_callbacks_list {
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struct list_head list;
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u32 usage_id;
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struct hid_sensor_hub_callbacks *usage_callback;
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void *priv;
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};
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static int sensor_hub_check_for_sensor_page(struct hid_device *hdev)
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{
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int i;
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int ret = -EINVAL;
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for (i = 0; i < hdev->maxcollection; i++) {
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struct hid_collection *col = &hdev->collection[i];
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if (col->type == HID_COLLECTION_PHYSICAL &&
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(col->usage & HID_USAGE_PAGE) == HID_UP_SENSOR) {
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ret = 0;
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break;
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}
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}
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return ret;
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}
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static struct hid_report *sensor_hub_report(int id, struct hid_device *hdev,
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int dir)
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{
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struct hid_report *report;
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list_for_each_entry(report, &hdev->report_enum[dir].report_list, list) {
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if (report->id == id)
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return report;
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}
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hid_warn(hdev, "No report with id 0x%x found\n", id);
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return NULL;
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}
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static int sensor_hub_get_physical_device_count(
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struct hid_report_enum *report_enum)
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{
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struct hid_report *report;
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struct hid_field *field;
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int cnt = 0;
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list_for_each_entry(report, &report_enum->report_list, list) {
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field = report->field[0];
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if (report->maxfield && field &&
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field->physical)
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cnt++;
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}
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return cnt;
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}
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static void sensor_hub_fill_attr_info(
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struct hid_sensor_hub_attribute_info *info,
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s32 index, s32 report_id, s32 units, s32 unit_expo, s32 size)
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{
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info->index = index;
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info->report_id = report_id;
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info->units = units;
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info->unit_expo = unit_expo;
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info->size = size/8;
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}
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static struct hid_sensor_hub_callbacks *sensor_hub_get_callback(
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struct hid_device *hdev,
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u32 usage_id, void **priv)
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{
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struct hid_sensor_hub_callbacks_list *callback;
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struct sensor_hub_data *pdata = hid_get_drvdata(hdev);
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spin_lock(&pdata->dyn_callback_lock);
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list_for_each_entry(callback, &pdata->dyn_callback_list, list)
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if (callback->usage_id == usage_id) {
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*priv = callback->priv;
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spin_unlock(&pdata->dyn_callback_lock);
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return callback->usage_callback;
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}
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spin_unlock(&pdata->dyn_callback_lock);
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return NULL;
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}
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int sensor_hub_register_callback(struct hid_sensor_hub_device *hsdev,
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u32 usage_id,
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struct hid_sensor_hub_callbacks *usage_callback)
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{
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struct hid_sensor_hub_callbacks_list *callback;
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struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev);
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spin_lock(&pdata->dyn_callback_lock);
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list_for_each_entry(callback, &pdata->dyn_callback_list, list)
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if (callback->usage_id == usage_id) {
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spin_unlock(&pdata->dyn_callback_lock);
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return -EINVAL;
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}
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callback = kzalloc(sizeof(*callback), GFP_KERNEL);
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if (!callback) {
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spin_unlock(&pdata->dyn_callback_lock);
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return -ENOMEM;
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}
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callback->usage_callback = usage_callback;
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callback->usage_id = usage_id;
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callback->priv = NULL;
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list_add_tail(&callback->list, &pdata->dyn_callback_list);
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spin_unlock(&pdata->dyn_callback_lock);
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return 0;
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}
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EXPORT_SYMBOL_GPL(sensor_hub_register_callback);
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int sensor_hub_remove_callback(struct hid_sensor_hub_device *hsdev,
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u32 usage_id)
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{
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struct hid_sensor_hub_callbacks_list *callback;
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struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev);
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spin_lock(&pdata->dyn_callback_lock);
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list_for_each_entry(callback, &pdata->dyn_callback_list, list)
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if (callback->usage_id == usage_id) {
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list_del(&callback->list);
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kfree(callback);
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break;
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}
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spin_unlock(&pdata->dyn_callback_lock);
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return 0;
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}
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EXPORT_SYMBOL_GPL(sensor_hub_remove_callback);
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int sensor_hub_set_feature(struct hid_sensor_hub_device *hsdev, u32 report_id,
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u32 field_index, s32 value)
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{
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struct hid_report *report;
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struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev);
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int ret = 0;
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if (report_id < 0)
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return -EINVAL;
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mutex_lock(&data->mutex);
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report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT);
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if (!report || (field_index >= report->maxfield)) {
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ret = -EINVAL;
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goto done_proc;
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}
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hid_set_field(report->field[field_index], 0, value);
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usbhid_submit_report(hsdev->hdev, report, USB_DIR_OUT);
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usbhid_wait_io(hsdev->hdev);
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done_proc:
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mutex_unlock(&data->mutex);
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return ret;
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}
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EXPORT_SYMBOL_GPL(sensor_hub_set_feature);
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int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id,
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u32 field_index, s32 *value)
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{
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struct hid_report *report;
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struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev);
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int ret = 0;
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if (report_id < 0)
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return -EINVAL;
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mutex_lock(&data->mutex);
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report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT);
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if (!report || (field_index >= report->maxfield)) {
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ret = -EINVAL;
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goto done_proc;
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}
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usbhid_submit_report(hsdev->hdev, report, USB_DIR_IN);
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usbhid_wait_io(hsdev->hdev);
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*value = report->field[field_index]->value[0];
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done_proc:
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mutex_unlock(&data->mutex);
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return ret;
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}
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EXPORT_SYMBOL_GPL(sensor_hub_get_feature);
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int sensor_hub_input_attr_get_raw_value(struct hid_sensor_hub_device *hsdev,
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u32 usage_id,
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u32 attr_usage_id, u32 report_id)
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{
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struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev);
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unsigned long flags;
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struct hid_report *report;
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int ret_val = 0;
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if (report_id < 0)
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return -EINVAL;
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mutex_lock(&data->mutex);
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memset(&data->pending, 0, sizeof(data->pending));
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init_completion(&data->pending.ready);
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data->pending.usage_id = usage_id;
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data->pending.attr_usage_id = attr_usage_id;
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data->pending.raw_size = 0;
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spin_lock_irqsave(&data->lock, flags);
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data->pending.status = true;
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report = sensor_hub_report(report_id, hsdev->hdev, HID_INPUT_REPORT);
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if (!report) {
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spin_unlock_irqrestore(&data->lock, flags);
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goto err_free;
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}
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usbhid_submit_report(hsdev->hdev, report, USB_DIR_IN);
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spin_unlock_irqrestore(&data->lock, flags);
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wait_for_completion_interruptible_timeout(&data->pending.ready, HZ*5);
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switch (data->pending.raw_size) {
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case 1:
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ret_val = *(u8 *)data->pending.raw_data;
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break;
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case 2:
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ret_val = *(u16 *)data->pending.raw_data;
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break;
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case 4:
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ret_val = *(u32 *)data->pending.raw_data;
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break;
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default:
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ret_val = 0;
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}
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kfree(data->pending.raw_data);
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err_free:
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data->pending.status = false;
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mutex_unlock(&data->mutex);
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return ret_val;
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}
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EXPORT_SYMBOL_GPL(sensor_hub_input_attr_get_raw_value);
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int sensor_hub_input_get_attribute_info(struct hid_sensor_hub_device *hsdev,
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u8 type,
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u32 usage_id,
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u32 attr_usage_id,
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struct hid_sensor_hub_attribute_info *info)
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{
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int ret = -1;
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int i, j;
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int collection_index = -1;
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struct hid_report *report;
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struct hid_field *field;
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struct hid_report_enum *report_enum;
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struct hid_device *hdev = hsdev->hdev;
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/* Initialize with defaults */
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info->usage_id = usage_id;
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info->attrib_id = attr_usage_id;
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info->report_id = -1;
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info->index = -1;
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info->units = -1;
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info->unit_expo = -1;
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for (i = 0; i < hdev->maxcollection; ++i) {
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struct hid_collection *collection = &hdev->collection[i];
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if (usage_id == collection->usage) {
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collection_index = i;
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break;
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}
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}
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if (collection_index == -1)
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goto err_ret;
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report_enum = &hdev->report_enum[type];
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list_for_each_entry(report, &report_enum->report_list, list) {
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for (i = 0; i < report->maxfield; ++i) {
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field = report->field[i];
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if (field->physical == usage_id &&
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field->logical == attr_usage_id) {
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sensor_hub_fill_attr_info(info, i, report->id,
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field->unit, field->unit_exponent,
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field->report_size);
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ret = 0;
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} else {
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for (j = 0; j < field->maxusage; ++j) {
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if (field->usage[j].hid ==
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attr_usage_id &&
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field->usage[j].collection_index ==
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collection_index) {
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sensor_hub_fill_attr_info(info,
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i, report->id,
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field->unit,
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field->unit_exponent,
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field->report_size);
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ret = 0;
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break;
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}
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}
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}
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if (ret == 0)
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break;
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}
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}
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err_ret:
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return ret;
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}
|
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EXPORT_SYMBOL_GPL(sensor_hub_input_get_attribute_info);
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|
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#ifdef CONFIG_PM
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static int sensor_hub_suspend(struct hid_device *hdev, pm_message_t message)
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{
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struct sensor_hub_data *pdata = hid_get_drvdata(hdev);
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struct hid_sensor_hub_callbacks_list *callback;
|
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|
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hid_dbg(hdev, " sensor_hub_suspend\n");
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spin_lock(&pdata->dyn_callback_lock);
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list_for_each_entry(callback, &pdata->dyn_callback_list, list) {
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if (callback->usage_callback->suspend)
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callback->usage_callback->suspend(
|
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pdata->hsdev, callback->priv);
|
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}
|
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spin_unlock(&pdata->dyn_callback_lock);
|
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|
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return 0;
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}
|
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|
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static int sensor_hub_resume(struct hid_device *hdev)
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{
|
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struct sensor_hub_data *pdata = hid_get_drvdata(hdev);
|
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struct hid_sensor_hub_callbacks_list *callback;
|
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|
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hid_dbg(hdev, " sensor_hub_resume\n");
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spin_lock(&pdata->dyn_callback_lock);
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list_for_each_entry(callback, &pdata->dyn_callback_list, list) {
|
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if (callback->usage_callback->resume)
|
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callback->usage_callback->resume(
|
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pdata->hsdev, callback->priv);
|
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}
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spin_unlock(&pdata->dyn_callback_lock);
|
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|
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return 0;
|
||||
}
|
||||
|
||||
static int sensor_hub_reset_resume(struct hid_device *hdev)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
/*
|
||||
* Handle raw report as sent by device
|
||||
*/
|
||||
static int sensor_hub_raw_event(struct hid_device *hdev,
|
||||
struct hid_report *report, u8 *raw_data, int size)
|
||||
{
|
||||
int i;
|
||||
u8 *ptr;
|
||||
int sz;
|
||||
struct sensor_hub_data *pdata = hid_get_drvdata(hdev);
|
||||
unsigned long flags;
|
||||
struct hid_sensor_hub_callbacks *callback = NULL;
|
||||
struct hid_collection *collection = NULL;
|
||||
void *priv = NULL;
|
||||
|
||||
hid_dbg(hdev, "sensor_hub_raw_event report id:0x%x size:%d type:%d\n",
|
||||
report->id, size, report->type);
|
||||
hid_dbg(hdev, "maxfield:%d\n", report->maxfield);
|
||||
if (report->type != HID_INPUT_REPORT)
|
||||
return 1;
|
||||
|
||||
ptr = raw_data;
|
||||
ptr++; /*Skip report id*/
|
||||
|
||||
if (!report)
|
||||
goto err_report;
|
||||
|
||||
spin_lock_irqsave(&pdata->lock, flags);
|
||||
|
||||
for (i = 0; i < report->maxfield; ++i) {
|
||||
|
||||
hid_dbg(hdev, "%d collection_index:%x hid:%x sz:%x\n",
|
||||
i, report->field[i]->usage->collection_index,
|
||||
report->field[i]->usage->hid,
|
||||
report->field[i]->report_size/8);
|
||||
|
||||
sz = report->field[i]->report_size/8;
|
||||
if (pdata->pending.status && pdata->pending.attr_usage_id ==
|
||||
report->field[i]->usage->hid) {
|
||||
hid_dbg(hdev, "data was pending ...\n");
|
||||
pdata->pending.raw_data = kmalloc(sz, GFP_KERNEL);
|
||||
if (pdata->pending.raw_data) {
|
||||
memcpy(pdata->pending.raw_data, ptr, sz);
|
||||
pdata->pending.raw_size = sz;
|
||||
} else
|
||||
pdata->pending.raw_size = 0;
|
||||
complete(&pdata->pending.ready);
|
||||
}
|
||||
collection = &hdev->collection[
|
||||
report->field[i]->usage->collection_index];
|
||||
hid_dbg(hdev, "collection->usage %x\n",
|
||||
collection->usage);
|
||||
callback = sensor_hub_get_callback(pdata->hsdev->hdev,
|
||||
report->field[i]->physical,
|
||||
&priv);
|
||||
if (callback && callback->capture_sample) {
|
||||
if (report->field[i]->logical)
|
||||
callback->capture_sample(pdata->hsdev,
|
||||
report->field[i]->logical, sz, ptr,
|
||||
callback->pdev);
|
||||
else
|
||||
callback->capture_sample(pdata->hsdev,
|
||||
report->field[i]->usage->hid, sz, ptr,
|
||||
callback->pdev);
|
||||
}
|
||||
ptr += sz;
|
||||
}
|
||||
if (callback && collection && callback->send_event)
|
||||
callback->send_event(pdata->hsdev, collection->usage,
|
||||
callback->pdev);
|
||||
spin_unlock_irqrestore(&pdata->lock, flags);
|
||||
|
||||
err_report:
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int sensor_hub_probe(struct hid_device *hdev,
|
||||
const struct hid_device_id *id)
|
||||
{
|
||||
int ret;
|
||||
struct sensor_hub_data *sd;
|
||||
int i;
|
||||
char *name;
|
||||
struct hid_report *report;
|
||||
struct hid_report_enum *report_enum;
|
||||
struct hid_field *field;
|
||||
int dev_cnt;
|
||||
|
||||
sd = kzalloc(sizeof(struct sensor_hub_data), GFP_KERNEL);
|
||||
if (!sd) {
|
||||
hid_err(hdev, "cannot allocate Sensor data\n");
|
||||
return -ENOMEM;
|
||||
}
|
||||
sd->hsdev = kzalloc(sizeof(struct hid_sensor_hub_device), GFP_KERNEL);
|
||||
if (!sd->hsdev) {
|
||||
hid_err(hdev, "cannot allocate hid_sensor_hub_device\n");
|
||||
ret = -ENOMEM;
|
||||
goto err_free_hub;
|
||||
}
|
||||
hid_set_drvdata(hdev, sd);
|
||||
sd->hsdev->hdev = hdev;
|
||||
sd->hsdev->vendor_id = hdev->vendor;
|
||||
sd->hsdev->product_id = hdev->product;
|
||||
spin_lock_init(&sd->lock);
|
||||
spin_lock_init(&sd->dyn_callback_lock);
|
||||
mutex_init(&sd->mutex);
|
||||
ret = hid_parse(hdev);
|
||||
if (ret) {
|
||||
hid_err(hdev, "parse failed\n");
|
||||
goto err_free;
|
||||
}
|
||||
if (sensor_hub_check_for_sensor_page(hdev) < 0) {
|
||||
hid_err(hdev, "sensor page not found\n");
|
||||
goto err_free;
|
||||
}
|
||||
INIT_LIST_HEAD(&hdev->inputs);
|
||||
|
||||
hdev->claimed = HID_CLAIMED_INPUT;
|
||||
ret = hid_hw_start(hdev, 0);
|
||||
if (ret) {
|
||||
hid_err(hdev, "hw start failed\n");
|
||||
goto err_free;
|
||||
}
|
||||
ret = hid_hw_open(hdev);
|
||||
if (ret) {
|
||||
hid_err(hdev, "failed to open input interrupt pipe\n");
|
||||
goto err_stop_hw;
|
||||
}
|
||||
|
||||
INIT_LIST_HEAD(&sd->dyn_callback_list);
|
||||
sd->hid_sensor_client_cnt = 0;
|
||||
report_enum = &hdev->report_enum[HID_INPUT_REPORT];
|
||||
|
||||
dev_cnt = sensor_hub_get_physical_device_count(report_enum);
|
||||
if (dev_cnt > HID_MAX_PHY_DEVICES) {
|
||||
hid_err(hdev, "Invalid Physical device count\n");
|
||||
ret = -EINVAL;
|
||||
goto err_close;
|
||||
}
|
||||
sd->hid_sensor_hub_client_devs = kzalloc(dev_cnt *
|
||||
sizeof(struct mfd_cell),
|
||||
GFP_KERNEL);
|
||||
if (sd->hid_sensor_hub_client_devs == NULL) {
|
||||
hid_err(hdev,
|
||||
"Failed to allocate memory for mfd cells\n");
|
||||
ret = -ENOMEM;
|
||||
goto err_close;
|
||||
}
|
||||
list_for_each_entry(report, &report_enum->report_list, list) {
|
||||
hid_dbg(hdev, "Report id:%x\n", report->id);
|
||||
field = report->field[0];
|
||||
if (report->maxfield && field &&
|
||||
field->physical) {
|
||||
name = kasprintf(GFP_KERNEL, "HID-SENSOR-%x",
|
||||
field->physical);
|
||||
if (name == NULL) {
|
||||
hid_err(hdev,
|
||||
"Failed MFD device name\n");
|
||||
ret = -ENOMEM;
|
||||
goto err_free_cells;
|
||||
}
|
||||
sd->hid_sensor_hub_client_devs[
|
||||
sd->hid_sensor_client_cnt].name = name;
|
||||
sd->hid_sensor_hub_client_devs[
|
||||
sd->hid_sensor_client_cnt].platform_data =
|
||||
sd->hsdev;
|
||||
sd->hid_sensor_hub_client_devs[
|
||||
sd->hid_sensor_client_cnt].pdata_size =
|
||||
sizeof(*sd->hsdev);
|
||||
hid_dbg(hdev, "Adding %s:%p\n", name, sd);
|
||||
sd->hid_sensor_client_cnt++;
|
||||
}
|
||||
}
|
||||
ret = mfd_add_devices(&hdev->dev, 0, sd->hid_sensor_hub_client_devs,
|
||||
sd->hid_sensor_client_cnt, NULL, 0);
|
||||
if (ret < 0)
|
||||
goto err_free_names;
|
||||
|
||||
return ret;
|
||||
|
||||
err_free_names:
|
||||
for (i = 0; i < sd->hid_sensor_client_cnt ; ++i)
|
||||
kfree(sd->hid_sensor_hub_client_devs[i].name);
|
||||
err_free_cells:
|
||||
kfree(sd->hid_sensor_hub_client_devs);
|
||||
err_close:
|
||||
hid_hw_stop(hdev);
|
||||
hid_hw_close(hdev);
|
||||
err_stop_hw:
|
||||
hid_hw_stop(hdev);
|
||||
err_free:
|
||||
kfree(sd->hsdev);
|
||||
err_free_hub:
|
||||
kfree(sd);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void sensor_hub_remove(struct hid_device *hdev)
|
||||
{
|
||||
struct sensor_hub_data *data = hid_get_drvdata(hdev);
|
||||
unsigned long flags;
|
||||
int i;
|
||||
|
||||
hid_dbg(hdev, " hardware removed\n");
|
||||
hdev->claimed &= ~HID_CLAIMED_INPUT;
|
||||
hid_hw_stop(hdev);
|
||||
hid_hw_close(hdev);
|
||||
spin_lock_irqsave(&data->lock, flags);
|
||||
if (data->pending.status)
|
||||
complete(&data->pending.ready);
|
||||
spin_unlock_irqrestore(&data->lock, flags);
|
||||
mfd_remove_devices(&hdev->dev);
|
||||
for (i = 0; i < data->hid_sensor_client_cnt ; ++i)
|
||||
kfree(data->hid_sensor_hub_client_devs[i].name);
|
||||
kfree(data->hid_sensor_hub_client_devs);
|
||||
hid_set_drvdata(hdev, NULL);
|
||||
mutex_destroy(&data->mutex);
|
||||
kfree(data->hsdev);
|
||||
kfree(data);
|
||||
}
|
||||
|
||||
static const struct hid_device_id sensor_hub_devices[] = {
|
||||
{ HID_USB_DEVICE(USB_VENDOR_ID_INTEL_8086,
|
||||
USB_DEVICE_ID_SENSOR_HUB_1020) },
|
||||
{ HID_USB_DEVICE(USB_VENDOR_ID_INTEL_8087,
|
||||
USB_DEVICE_ID_SENSOR_HUB_1020) },
|
||||
{ HID_USB_DEVICE(USB_VENDOR_ID_INTEL_8086,
|
||||
USB_DEVICE_ID_SENSOR_HUB_09FA) },
|
||||
{ HID_USB_DEVICE(USB_VENDOR_ID_INTEL_8087,
|
||||
USB_DEVICE_ID_SENSOR_HUB_09FA) },
|
||||
{ HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
|
||||
USB_DEVICE_ID_SENSOR_HUB_7014) },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(hid, sensor_hub_devices);
|
||||
|
||||
static const struct hid_usage_id sensor_hub_grabbed_usages[] = {
|
||||
{ HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
|
||||
{ HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1 }
|
||||
};
|
||||
|
||||
static struct hid_driver sensor_hub_driver = {
|
||||
.name = "hid-sensor-hub",
|
||||
.id_table = sensor_hub_devices,
|
||||
.probe = sensor_hub_probe,
|
||||
.remove = sensor_hub_remove,
|
||||
.raw_event = sensor_hub_raw_event,
|
||||
#ifdef CONFIG_PM
|
||||
.suspend = sensor_hub_suspend,
|
||||
.resume = sensor_hub_resume,
|
||||
.reset_resume = sensor_hub_reset_resume,
|
||||
#endif
|
||||
};
|
||||
|
||||
static int __init sensor_hub_init(void)
|
||||
{
|
||||
return hid_register_driver(&sensor_hub_driver);
|
||||
}
|
||||
|
||||
static void __exit sensor_hub_exit(void)
|
||||
{
|
||||
hid_unregister_driver(&sensor_hub_driver);
|
||||
}
|
||||
|
||||
module_init(sensor_hub_init);
|
||||
module_exit(sensor_hub_exit);
|
||||
|
||||
MODULE_DESCRIPTION("HID Sensor Hub driver");
|
||||
MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
|
@ -0,0 +1,160 @@
|
|||
/*
|
||||
* 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.
|
||||
*
|
||||
*/
|
||||
#ifndef _HID_SENSORS_HUB_H
|
||||
#define _HID_SENSORS_HUB_H
|
||||
|
||||
#include <linux/hid.h>
|
||||
#include <linux/hid-sensor-ids.h>
|
||||
|
||||
/**
|
||||
* struct hid_sensor_hub_attribute_info - Attribute info
|
||||
* @usage_id: Parent usage id of a physical device.
|
||||
* @attrib_id: Attribute id for this attribute.
|
||||
* @report_id: Report id in which this information resides.
|
||||
* @index: Field index in the report.
|
||||
* @units: Measurment unit for this attribute.
|
||||
* @unit_expo: Exponent used in the data.
|
||||
* @size: Size in bytes for data size.
|
||||
*/
|
||||
struct hid_sensor_hub_attribute_info {
|
||||
u32 usage_id;
|
||||
u32 attrib_id;
|
||||
s32 report_id;
|
||||
s32 index;
|
||||
s32 units;
|
||||
s32 unit_expo;
|
||||
s32 size;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct hid_sensor_hub_device - Stores the hub instance data
|
||||
* @hdev: Stores the hid instance.
|
||||
* @vendor_id: Vendor id of hub device.
|
||||
* @product_id: Product id of hub device.
|
||||
*/
|
||||
struct hid_sensor_hub_device {
|
||||
struct hid_device *hdev;
|
||||
u32 vendor_id;
|
||||
u32 product_id;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct hid_sensor_hub_callbacks - Client callback functions
|
||||
* @pdev: Platform device instance of the client driver.
|
||||
* @suspend: Suspend callback.
|
||||
* @resume: Resume callback.
|
||||
* @capture_sample: Callback to get a sample.
|
||||
* @send_event: Send notification to indicate all samples are
|
||||
* captured, process and send event
|
||||
*/
|
||||
struct hid_sensor_hub_callbacks {
|
||||
struct platform_device *pdev;
|
||||
int (*suspend)(struct hid_sensor_hub_device *hsdev, void *priv);
|
||||
int (*resume)(struct hid_sensor_hub_device *hsdev, void *priv);
|
||||
int (*capture_sample)(struct hid_sensor_hub_device *hsdev,
|
||||
u32 usage_id, size_t raw_len, char *raw_data,
|
||||
void *priv);
|
||||
int (*send_event)(struct hid_sensor_hub_device *hsdev, u32 usage_id,
|
||||
void *priv);
|
||||
};
|
||||
|
||||
/* Registration functions */
|
||||
|
||||
/**
|
||||
* sensor_hub_register_callback() - Register client callbacks
|
||||
* @hsdev: Hub device instance.
|
||||
* @usage_id: Usage id of the client (E.g. 0x200076 for Gyro).
|
||||
* @usage_callback: Callback function storage
|
||||
*
|
||||
* Used to register callbacks by client processing drivers. Sensor
|
||||
* hub core driver will call these callbacks to offload processing
|
||||
* of data streams and notifications.
|
||||
*/
|
||||
int sensor_hub_register_callback(struct hid_sensor_hub_device *hsdev,
|
||||
u32 usage_id,
|
||||
struct hid_sensor_hub_callbacks *usage_callback);
|
||||
|
||||
/**
|
||||
* sensor_hub_remove_callback() - Remove client callbacks
|
||||
* @hsdev: Hub device instance.
|
||||
* @usage_id: Usage id of the client (E.g. 0x200076 for Gyro).
|
||||
*
|
||||
* If there is a callback registred, this call will remove that
|
||||
* callbacks, so that it will stop data and event notifications.
|
||||
*/
|
||||
int sensor_hub_remove_callback(struct hid_sensor_hub_device *hsdev,
|
||||
u32 usage_id);
|
||||
|
||||
|
||||
/* Hid sensor hub core interfaces */
|
||||
|
||||
/**
|
||||
* sensor_hub_input_get_attribute_info() - Get an attribute information
|
||||
* @hsdev: Hub device instance.
|
||||
* @type: Type of this attribute, input/output/feature
|
||||
* @usage_id: Attribute usage id of parent physical device as per spec
|
||||
* @attr_usage_id: Attribute usage id as per spec
|
||||
* @info: return information about attribute after parsing report
|
||||
*
|
||||
* Parses report and returns the attribute information such as report id,
|
||||
* field index, units and exponet etc.
|
||||
*/
|
||||
int sensor_hub_input_get_attribute_info(struct hid_sensor_hub_device *hsdev,
|
||||
u8 type,
|
||||
u32 usage_id, u32 attr_usage_id,
|
||||
struct hid_sensor_hub_attribute_info *info);
|
||||
|
||||
/**
|
||||
* sensor_hub_input_attr_get_raw_value() - Synchronous read request
|
||||
* @usage_id: Attribute usage id of parent physical device as per spec
|
||||
* @attr_usage_id: Attribute usage id as per spec
|
||||
* @report_id: Report id to look for
|
||||
*
|
||||
* Issues a synchronous read request for an input attribute. Returns
|
||||
* data upto 32 bits. Since client can get events, so this call should
|
||||
* not be used for data paths, this will impact performance.
|
||||
*/
|
||||
|
||||
int sensor_hub_input_attr_get_raw_value(struct hid_sensor_hub_device *hsdev,
|
||||
u32 usage_id,
|
||||
u32 attr_usage_id, u32 report_id);
|
||||
/**
|
||||
* sensor_hub_set_feature() - Feature set request
|
||||
* @report_id: Report id to look for
|
||||
* @field_index: Field index inside a report
|
||||
* @value: Value to set
|
||||
*
|
||||
* Used to set a field in feature report. For example this can set polling
|
||||
* interval, sensitivity, activate/deactivate state.
|
||||
*/
|
||||
int sensor_hub_set_feature(struct hid_sensor_hub_device *hsdev, u32 report_id,
|
||||
u32 field_index, s32 value);
|
||||
|
||||
/**
|
||||
* sensor_hub_get_feature() - Feature get request
|
||||
* @report_id: Report id to look for
|
||||
* @field_index: Field index inside a report
|
||||
* @value: Place holder for return value
|
||||
*
|
||||
* Used to get a field in feature report. For example this can get polling
|
||||
* interval, sensitivity, activate/deactivate state.
|
||||
*/
|
||||
int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id,
|
||||
u32 field_index, s32 *value);
|
||||
#endif
|
||||
|
|
@ -0,0 +1,112 @@
|
|||
/*
|
||||
* 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.
|
||||
*
|
||||
*/
|
||||
#ifndef _HID_SENSORS_IDS_H
|
||||
#define _HID_SENSORS_IDS_H
|
||||
|
||||
#define HID_UP_SENSOR 0x00200000
|
||||
#define HID_MAX_PHY_DEVICES 0xFF
|
||||
|
||||
/* Accel 3D (200073) */
|
||||
#define HID_USAGE_SENSOR_ACCEL_3D 0x200073
|
||||
#define HID_USAGE_SENSOR_ACCEL_X_AXIS 0x200453
|
||||
#define HID_USAGE_SENSOR_ACCEL_Y_AXIS 0x200454
|
||||
#define HID_USAGE_SENSOR_ACCEL_Z_AXIS 0x200455
|
||||
|
||||
/* ALS (200041) */
|
||||
#define HID_USAGE_SENSOR_ALS 0x200041
|
||||
#define HID_USAGE_SENSOR_LIGHT_ILLUM 0x2004d1
|
||||
|
||||
/* Gyro 3D: (200076) */
|
||||
#define HID_USAGE_SENSOR_GYRO_3D 0x200076
|
||||
#define HID_USAGE_SENSOR_ANGL_VELOCITY_X_AXIS 0x200457
|
||||
#define HID_USAGE_SENSOR_ANGL_VELOCITY_Y_AXIS 0x200458
|
||||
#define HID_USAGE_SENSOR_ANGL_VELOCITY_Z_AXIS 0x200459
|
||||
|
||||
/*ORIENTATION: Compass 3D: (200083) */
|
||||
#define HID_USAGE_SENSOR_COMPASS_3D 0x200083
|
||||
#define HID_USAGE_SENSOR_ORIENT_MAGN_HEADING 0x200471
|
||||
#define HID_USAGE_SENSOR_ORIENT_MAGN_HEADING_X 0x200472
|
||||
#define HID_USAGE_SENSOR_ORIENT_MAGN_HEADING_Y 0x200473
|
||||
#define HID_USAGE_SENSOR_ORIENT_MAGN_HEADING_Z 0x200474
|
||||
|
||||
#define HID_USAGE_SENSOR_ORIENT_COMP_MAGN_NORTH 0x200475
|
||||
#define HID_USAGE_SENSOR_ORIENT_COMP_TRUE_NORTH 0x200476
|
||||
#define HID_USAGE_SENSOR_ORIENT_MAGN_NORTH 0x200477
|
||||
#define HID_USAGE_SENSOR_ORIENT_TRUE_NORTH 0x200478
|
||||
|
||||
#define HID_USAGE_SENSOR_ORIENT_DISTANCE 0x200479
|
||||
#define HID_USAGE_SENSOR_ORIENT_DISTANCE_X 0x20047A
|
||||
#define HID_USAGE_SENSOR_ORIENT_DISTANCE_Y 0x20047B
|
||||
#define HID_USAGE_SENSOR_ORIENT_DISTANCE_Z 0x20047C
|
||||
#define HID_USAGE_SENSOR_ORIENT_DISTANCE_OUT_OF_RANGE 0x20047D
|
||||
#define HID_USAGE_SENSOR_ORIENT_TILT 0x20047E
|
||||
#define HID_USAGE_SENSOR_ORIENT_TILT_X 0x20047F
|
||||
#define HID_USAGE_SENSOR_ORIENT_TILT_Y 0x200480
|
||||
#define HID_USAGE_SENSOR_ORIENT_TILT_Z 0x200481
|
||||
#define HID_USAGE_SENSOR_ORIENT_ROTATION_MATRIX 0x200482
|
||||
#define HID_USAGE_SENSOR_ORIENT_QUATERNION 0x200483
|
||||
#define HID_USAGE_SENSOR_ORIENT_MAGN_FLUX 0x200484
|
||||
|
||||
#define HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_X_AXIS 0x200485
|
||||
#define HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_Y_AXIS 0x200486
|
||||
#define HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_Z_AXIS 0x200487
|
||||
|
||||
/* Units */
|
||||
#define HID_USAGE_SENSOR_UNITS_NOT_SPECIFIED 0x00
|
||||
#define HID_USAGE_SENSOR_UNITS_LUX 0x01
|
||||
#define HID_USAGE_SENSOR_UNITS_KELVIN 0x01000100
|
||||
#define HID_USAGE_SENSOR_UNITS_FAHRENHEIT 0x03000100
|
||||
#define HID_USAGE_SENSOR_UNITS_PASCAL 0xF1E1
|
||||
#define HID_USAGE_SENSOR_UNITS_NEWTON 0x11E1
|
||||
#define HID_USAGE_SENSOR_UNITS_METERS_PER_SECOND 0x11F0
|
||||
#define HID_USAGE_SENSOR_UNITS_METERS_PER_SEC_SQRD 0x11E0
|
||||
#define HID_USAGE_SENSOR_UNITS_FARAD 0xE14F2000
|
||||
#define HID_USAGE_SENSOR_UNITS_AMPERE 0x01001000
|
||||
#define HID_USAGE_SENSOR_UNITS_WATT 0x21d1
|
||||
#define HID_USAGE_SENSOR_UNITS_HENRY 0x21E1E000
|
||||
#define HID_USAGE_SENSOR_UNITS_OHM 0x21D1E000
|
||||
#define HID_USAGE_SENSOR_UNITS_VOLT 0x21D1F000
|
||||
#define HID_USAGE_SENSOR_UNITS_HERTZ 0x01F0
|
||||
#define HID_USAGE_SENSOR_UNITS_DEGREES_PER_SEC_SQRD 0x14E0
|
||||
#define HID_USAGE_SENSOR_UNITS_RADIANS 0x12
|
||||
#define HID_USAGE_SENSOR_UNITS_RADIANS_PER_SECOND 0x12F0
|
||||
#define HID_USAGE_SENSOR_UNITS_RADIANS_PER_SEC_SQRD 0x12E0
|
||||
#define HID_USAGE_SENSOR_UNITS_SECOND 0x0110
|
||||
#define HID_USAGE_SENSOR_UNITS_GAUSS 0x01E1F000
|
||||
#define HID_USAGE_SENSOR_UNITS_GRAM 0x0101
|
||||
#define HID_USAGE_SENSOR_UNITS_CENTIMETER 0x11
|
||||
#define HID_USAGE_SENSOR_UNITS_G 0x1A
|
||||
#define HID_USAGE_SENSOR_UNITS_MILLISECOND 0x19
|
||||
#define HID_USAGE_SENSOR_UNITS_PERCENT 0x17
|
||||
#define HID_USAGE_SENSOR_UNITS_DEGREES 0x14
|
||||
#define HID_USAGE_SENSOR_UNITS_DEGREES_PER_SECOND 0x15
|
||||
|
||||
/* Common selectors */
|
||||
#define HID_USAGE_SENSOR_PROP_REPORT_INTERVAL 0x20030E
|
||||
#define HID_USAGE_SENSOR_PROP_SENSITIVITY_ABS 0x20030F
|
||||
#define HID_USAGE_SENSOR_PROP_SENSITIVITY_RANGE_PCT 0x200310
|
||||
#define HID_USAGE_SENSOR_PROP_SENSITIVITY_REL_PCT 0x200311
|
||||
#define HID_USAGE_SENSOR_PROP_ACCURACY 0x200312
|
||||
#define HID_USAGE_SENSOR_PROP_RESOLUTION 0x200313
|
||||
#define HID_USAGE_SENSOR_PROP_RANGE_MAXIMUM 0x200314
|
||||
#define HID_USAGE_SENSOR_PROP_RANGE_MINIMUM 0x200315
|
||||
#define HID_USAGE_SENSOR_PROP_REPORT_STATE 0x200316
|
||||
#define HID_USAGE_SENSOR_PROY_POWER_STATE 0x200319
|
||||
|
||||
#endif
|
||||
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