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@xxxxxxxxx>
---
drivers/hid/Kconfig | 18 +
drivers/hid/Makefile | 1 +
drivers/hid/hid-sensor-hub.c | 883 ++++++++++++++++++++++++++++++++++++++++
include/linux/hid-sensor-hub.h | 99 +++++
include/linux/hid-sensor-ids.h | 116 ++++++
5 files changed, 1117 insertions(+), 0 deletions(-)
create mode 100644 drivers/hid/hid-sensor-hub.c
create mode 100644 include/linux/hid-sensor-hub.h
create mode 100644 include/linux/hid-sensor-ids.h
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index ffddcba..0c86ab0 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -644,6 +644,24 @@ config HID_ZYDACRON
---help---
Support for Zydacron remote control.
+config HID_SENSOR_HUB
+ tristate "HID Sensors framework support"
+ depends on USB_HID
+ select MFD_CORE
+ default n
+ -- help---
+ Support for HID Sensor framework. This will provide MFD framework for
+ adding different sensors, using HID sensor usage table. This defines
+ a set of interface functions to register callbacks for events so
+ that the events are transferred to user space using either input
+ or IIO ineterfaces.
+
+config HID_SENSOR_HUB_DEBUG
+ tristate "HID Sensor debug support"
+ default n
+ -- help---
+ Debug support for Hid sensors. Enable this flag to debug only.
+
endmenu
endif # HID_SUPPORT
diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile
index 22f1d16..04f7086 100644
--- a/drivers/hid/Makefile
+++ b/drivers/hid/Makefile
@@ -84,6 +84,7 @@ obj-$(CONFIG_HID_ZYDACRON) += hid-zydacron.o
obj-$(CONFIG_HID_WACOM) += hid-wacom.o
obj-$(CONFIG_HID_WALTOP) += hid-waltop.o
obj-$(CONFIG_HID_WIIMOTE) += hid-wiimote.o
+obj-$(CONFIG_HID_SENSOR_HUB) += hid-sensor-hub.o
obj-$(CONFIG_USB_HID) += usbhid/
obj-$(CONFIG_USB_MOUSE) += usbhid/
diff --git a/drivers/hid/hid-sensor-hub.c b/drivers/hid/hid-sensor-hub.c
new file mode 100644
index 0000000..b8d4b68
--- /dev/null
+++ b/drivers/hid/hid-sensor-hub.c
@@ -0,0 +1,883 @@
+/*
+ * 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/hid.h>
+#include <linux/usb.h>
+#include "usbhid/usbhid.h"
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/mfd/core.h>
+#include <linux/list.h>
+#include <linux/hid-sensor-ids.h>
+#include <linux/hid-sensor-hub.h>
+
+#include "hid-ids.h"
+
+#define MAX_HUB_SENSORS 20
+#define MAX_DRIVER_NAME_SIZE 30
+#define RAW_BUFFER_SIZE 128
+#define MAXIMUM_SAMP_FREQUENCY 1000
+#define sensor_hub_in_report(id, dev) sensor_hub_report(id, dev,\
+ HID_INPUT_REPORT)
+#define sensor_hub_out_report(id, dev) sensor_hub_report(id, dev,\
+ HID_OUTPUT_REPORT)
+#define sensor_hub_feature_report(id, dev) sensor_hub_report(id, dev,\
+ HID_FEATURE_REPORT)
+
+/* Description of in-progress IO operation, used for operations
+ * that trigger response from device */
+struct sensor_hub_pending {
+ struct completion ready;
+ u32 usage_id;
+ u32 attr_usage_id;
+ int raw_size;
+ u8 raw_data[RAW_BUFFER_SIZE];
+};
+
+struct sensor_hub_data {
+ struct hid_sensor_hub_device *hsdev;
+ struct mutex mutex;
+ spinlock_t lock;
+ struct sensor_hub_pending *pending;
+ struct list_head dyn_callback_list;
+ spinlock_t dyn_lock;
+};
+
+struct hid_sensor_hub_callbacks_list {
+ struct list_head list;
+ u32 usage_id;
+ struct hid_sensor_hub_callbacks *usage_callback;
+ int initialized;
+ void *priv;
+};
+
+static struct mfd_cell hid_sensor_hub_client_devs[MAX_HUB_SENSORS];
+static int hid_sensor_client_cnt;
+
+static int sensor_hub_check_for_sensor_page(struct hid_device *hdev)
+{
+ int i;
+ int ret = -EINVAL;
+
+ for (i = 0; i < hdev->maxcollection; i++) {
+ struct hid_collection *col = &hdev->collection[i];
+ if (col->type == HID_COLLECTION_PHYSICAL &&
+ (col->usage & HID_USAGE_PAGE) == HID_UP_SENSOR) {
+ ret = 0;
+ break;
+ }
+ }
+ return ret;
+}
+
+static struct hid_report *sensor_hub_report(int id, struct hid_device *hdev,
+ int dir)
+{
+ struct list_head *feature_report_list =
+ &hdev->report_enum[dir].report_list;
+ struct hid_report *report = NULL;
+
+ list_for_each_entry(report, feature_report_list, list) {
+ if (report->id == id)
+ return report;
+ }
+ hid_warn(hdev, "No report with id 0x%x found\n", id);
+ return NULL;
+}
+
+#if (defined CONFIG_HID_SENSOR_HUB_DEBUG) || \
+ (defined CONFIG_HID_SENSOR_HUB_DEBUG_MODULE)
+static void dump_report(struct hid_device *hdev)
+{
+ int i, j;
+ struct hid_report *report;
+ struct hid_field *field;
+ struct hid_report_enum *report_enum;
+
+ hid_dbg(hdev, "Bus:0x%x Vendor:0x%x Product:0x%x\n", hdev->bus,
+ hdev->vendor, hdev->product);
+ hid_dbg(hdev, "rsize=%d, max_collections:%d\n", hdev->rsize,
+ hdev->maxcollection);
+ for (i = 0; i < hdev->maxcollection; ++i) {
+ struct hid_collection *collection = &hdev->collection[i];
+ hid_dbg(hdev, "c:%d t:0x%x u:0x%x l:0x%x\n",
+ i, collection->type, collection->usage,
+ collection->level);
+ }
+
+ hid_dbg(hdev, "report_enum[HID_INPUT_REPORT]\n");
+ report_enum = &hdev->report_enum[HID_INPUT_REPORT];
+ list_for_each_entry(report, &report_enum->report_list, list) {
+ hid_dbg(hdev, "Report id:%x\n", report->id);
+ for (i = 0; i < report->maxfield; ++i) {
+ field = report->field[i];
+ for (j = 0; j < field->maxusage; ++j) {
+ hid_dbg(hdev, "usage hid:%x c_index:%x\n",
+ field->usage[j].hid,
+ field->usage[j].collection_index);
+ }
+ hid_dbg(hdev, "units:%x expo:%x\n",
+ field->unit,
+ field->unit_exponent);
+ }
+ }
+
+ hid_dbg(hdev, "report_enum[HID_OUTPUT_REPORT]\n");
+ report_enum = &hdev->report_enum[HID_OUTPUT_REPORT];
+ list_for_each_entry(report, &report_enum->report_list, list) {
+ hid_dbg(hdev, "Report id:%x\n", report->id);
+ for (i = 0; i < report->maxfield; ++i) {
+ field = report->field[i];
+ for (j = 0; j < field->maxusage; ++j) {
+ hid_dbg(hdev, "usage hid:%x c_index:%x\n",
+ field->usage[j].hid,
+ field->usage[j].collection_index);
+ }
+ hid_dbg(hdev, "units:%x expo:%x\n",
+ field->unit,
+ field->unit_exponent);
+
+ }
+ }
+
+ hid_dbg(hdev, "report_enum[HID_FEATURE_REPORT]\n");
+ report_enum = &hdev->report_enum[HID_FEATURE_REPORT];
+ list_for_each_entry(report, &report_enum->report_list, list) {
+ hid_dbg(hdev, "Report id:%x\n", report->id);
+ for (i = 0; i < report->maxfield; ++i) {
+ field = report->field[i];
+ for (j = 0; j < field->maxusage; ++j) {
+ hid_dbg(hdev, "u hid:%x c_index:%x\n",
+ field->usage[j].hid,
+ field->usage[j].collection_index);
+ }
+ hid_dbg(hdev, "units:%x expo:%x\n",
+ field->unit,
+ field->unit_exponent);
+ }
+ }
+}
+
+static void dump_raw_data(struct hid_device *hdev, int size, u8 *pdata)
+{
+ int j = 0;
+
+ for (j = 0; j < size; ++j)
+ hid_dbg(hdev, "0x%x\n", *pdata++);
+}
+#endif
+
+static struct hid_sensor_hub_callbacks *sensor_hub_get_callback(
+ struct hid_device *hdev,
+ u32 usage_id, void **priv)
+{
+ struct hid_sensor_hub_callbacks_list *callback = NULL;
+ struct sensor_hub_data *pdata = hid_get_drvdata(hdev);
+
+
+ spin_lock(&pdata->dyn_lock);
+ list_for_each_entry(callback, &pdata->dyn_callback_list, list)
+ if (callback->usage_id == usage_id) {
+ *priv = callback->priv;
+ spin_unlock(&pdata->dyn_lock);
+ return callback->usage_callback;
+ }
+ spin_unlock(&pdata->dyn_lock);
+ return NULL;
+}
+
+int sensor_hub_register_callback(struct hid_sensor_hub_device *hsdev,
+ u32 usage_id,
+ struct hid_sensor_hub_callbacks *usage_callback)
+{
+ struct hid_sensor_hub_callbacks_list *callback;
+ struct sensor_hub_data *pdata =
+ (struct sensor_hub_data *)hid_get_drvdata(hsdev->hdev);
+
+ spin_lock(&pdata->dyn_lock);
+ list_for_each_entry(callback, &pdata->dyn_callback_list, list)
+ if (callback->usage_id == usage_id) {
+ spin_unlock(&pdata->dyn_lock);
+ return -EINVAL;
+ }
+ callback = kzalloc(sizeof(*callback), GFP_KERNEL);
+ if (!callback) {
+ spin_unlock(&pdata->dyn_lock);
+ return -ENOMEM;
+ }
+ callback->usage_callback = usage_callback;
+ callback->usage_id = usage_id;
+ callback->priv = NULL;
+ list_add_tail(&callback->list, &pdata->dyn_callback_list);
+ spin_unlock(&pdata->dyn_lock);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(sensor_hub_register_callback);
+
+int sensor_hub_remove_callback(struct hid_sensor_hub_device *hsdev,
+ u32 usage_id)
+{
+ struct hid_sensor_hub_callbacks_list *callback, *n;
+ struct sensor_hub_data *pdata =
+ (struct sensor_hub_data *)hid_get_drvdata(hsdev->hdev);
+
+ spin_lock(&pdata->dyn_lock);
+ list_for_each_entry_safe(callback, n,
+ &pdata->dyn_callback_list, list)
+ if (callback->usage_id == usage_id) {
+ list_del(&callback->list);
+ kfree(callback);
+ break;
+ }
+ spin_unlock(&pdata->dyn_lock);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(sensor_hub_remove_callback);
+
+int sensor_hub_set_feature(struct hid_sensor_hub_device *hsdev, u32 report_id,
+ u32 field_index, s32 value)
+{
+ struct hid_report *report;
+ struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev);
+ int ret = 0;
+
+ if (report_id < 0)
+ return -EINVAL;
+
+ mutex_lock(&data->mutex);
+ report = sensor_hub_feature_report(report_id, hsdev->hdev);
+ if (!report) {
+ ret = -EINVAL;
+ goto done_proc;
+ }
+ if (field_index >= report->maxfield) {
+ ret = -EINVAL;
+ goto done_proc;
+ }
+ hid_set_field(report->field[field_index], 0, value);
+ usbhid_submit_report(hsdev->hdev, report, USB_DIR_OUT);
+ usbhid_wait_io(hsdev->hdev);
+done_proc:
+ mutex_unlock(&data->mutex);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(sensor_hub_set_feature);
+
+int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id,
+ u32 field_index, s32 *value)
+{
+ struct hid_report *report;
+ struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev);
+ int ret = 0;
+
+ if (report_id < 0)
+ return -EINVAL;
+
+ mutex_lock(&data->mutex);
+ report = sensor_hub_feature_report(report_id, hsdev->hdev);
+ if (!report) {
+ ret = -EINVAL;
+ goto done_proc;
+ }
+ if (field_index >= report->maxfield) {
+ ret = -EINVAL;
+ goto done_proc;
+ }
+ usbhid_submit_report(hsdev->hdev, report, USB_DIR_IN);
+ usbhid_wait_io(hsdev->hdev);
+ *value = report->field[field_index]->value[0];
+done_proc:
+ mutex_unlock(&data->mutex);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(sensor_hub_get_feature);
+
+
+int sensor_hub_input_attr_get_raw_value(struct hid_sensor_hub_device *hsdev,
+ u32 usage_id,
+ u32 attr_usage_id, u32 report_id)
+{
+ struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev);
+ struct sensor_hub_pending *work;
+ unsigned long flags;
+ struct hid_report *report;
+ int ret_val = 0;
+
+ if (report_id < 0)
+ return -EINVAL;
+
+ work = kzalloc(sizeof(*work), GFP_KERNEL);
+ if (!work)
+ return ret_val;
+
+ init_completion(&work->ready);
+ work->usage_id = usage_id;
+ work->attr_usage_id = attr_usage_id;
+ work->raw_size = 0;
+
+ mutex_lock(&data->mutex);
+ spin_lock_irqsave(&data->lock, flags);
+ data->pending = work;
+ report = sensor_hub_in_report(report_id, hsdev->hdev);
+ if (!report)
+ goto err_free;
+ usbhid_submit_report(hsdev->hdev, report, USB_DIR_IN);
+ spin_unlock_irqrestore(&data->lock, flags);
+ wait_for_completion_interruptible_timeout(&work->ready, HZ*5);
+ if (work->raw_size)
+ ret_val = *(u32 *)work->raw_data;
+
+err_free:
+ data->pending = NULL;
+ mutex_unlock(&data->mutex);
+
+ kfree(work);
+ return ret_val;
+}
+EXPORT_SYMBOL_GPL(sensor_hub_input_attr_get_raw_value);
+
+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)
+{
+ int ret = -1;
+ int i, j;
+ int collection_index = -1;
+ struct hid_report *report;
+ struct hid_field *field;
+ struct hid_report_enum *report_enum;
+ struct hid_device *hdev = hsdev->hdev;
+
+ /* Initialize with defaults */
+ info->usage_id = usage_id;
+ info->attrib_id = attr_usage_id;
+ info->report_id = -1;
+ info->index = -1;
+ info->units = -1;
+ info->unit_expo = -1;
+
+ for (i = 0; i < hdev->maxcollection; ++i) {
+ struct hid_collection *collection = &hdev->collection[i];
+ if (usage_id == collection->usage) {
+ collection_index = i;
+ break;
+ }
+ }
+ if (collection_index == -1)
+ goto err_ret;
+
+ report_enum = &hdev->report_enum[type];
+ list_for_each_entry(report, &report_enum->report_list, list) {
+ for (i = 0; i < report->maxfield; ++i) {
+ field = report->field[i];
+ for (j = 0; j < field->maxusage; ++j) {
+ if (field->usage[j].hid == attr_usage_id &&
+ field->usage[j].collection_index ==
+ collection_index) {
+ info->index = i;
+ info->report_id = report->id;
+ info->units = field->unit;
+ info->unit_expo = field->unit_exponent;
+ info->size = field->report_size/8;
+ break;
+ }
+ }
+ }
+ }
+err_ret:
+ return ret;
+}
+EXPORT_SYMBOL_GPL(sensor_hub_input_get_attribute_info);
+
+struct hid_sensor_common_attributes *sensor_hub_allocate_common_attributes(
+ struct hid_sensor_hub_device *hsdev, unsigned usage_id)
+{
+ int ret;
+ struct hid_sensor_common_attributes *st;
+
+ st = kzalloc(sizeof(struct hid_sensor_common_attributes), GFP_KERNEL);
+ if (st == NULL) {
+ hid_err(hsdev->hdev, "Mem Allocation Failure\n");
+ goto error_ret;
+ }
+ st->hsdev = hsdev;
+ st->usage_id = usage_id;
+ ret = sensor_hub_input_get_attribute_info(hsdev,
+ HID_FEATURE_REPORT, usage_id,
+ HID_SENSOR_POLLING, &st->poll);
+
+ ret = sensor_hub_input_get_attribute_info(hsdev,
+ HID_FEATURE_REPORT, usage_id,
+ HID_SENSOR_REPORT_STATE,
+ &st->report_state);
+
+ ret = sensor_hub_input_get_attribute_info(hsdev,
+ HID_FEATURE_REPORT, usage_id,
+ HID_SENSOR_POWER_STATE,
+ &st->power_state);
+
+ ret = sensor_hub_input_get_attribute_info(hsdev,
+ HID_FEATURE_REPORT, usage_id,
+ HID_USAGE_SENSOR_PROPERTY_CHANGE_SENSITIVITY_ABS,
+ &st->sensitivity);
+
+ hid_dbg(hsdev->hdev, "common attributes: %x:%x, %x:%x, %x:%x %x:%x\n",
+ st->poll.index, st->poll.report_id,
+ st->report_state.index, st->report_state.report_id,
+ st->power_state.index, st->power_state.report_id,
+ st->sensitivity.index, st->sensitivity.report_id);
+
+ return st;
+
+error_ret:
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(sensor_hub_allocate_common_attributes);
+
+void sensor_hub_free_common_attributes(
+ struct hid_sensor_common_attributes *attrb)
+{
+ kfree(attrb);
+}
+EXPORT_SYMBOL_GPL(sensor_hub_free_common_attributes);
+
+ssize_t hid_sensor_read_samp_freq(struct hid_sensor_common_attributes *attrb,
+ int buf_len, char *buf)
+{
+ __s32 value;
+ int len;
+ int ret;
+ int conv_value;
+
+ ret = sensor_hub_get_feature(attrb->hsdev,
+ attrb->poll.report_id,
+ attrb->poll.index, &value);
+ if (ret < 0 || value <= 0)
+ len = sprintf(buf, "0\n");
+ else {
+ if (attrb->poll.units == HID_USAGE_SENSOR_UNITS_MILLISECOND)
+ conv_value = 1000/value;
+ else if (attrb->poll.units == HID_USAGE_SENSOR_UNITS_SECOND)
+ conv_value = 1/value;
+ else
+ conv_value = value; /*Assume HZ*/
+ len = sprintf(buf, "%d\n", conv_value);
+ }
+ return len;
+}
+EXPORT_SYMBOL_GPL(hid_sensor_read_samp_freq);
+
+ssize_t hid_sensor_write_samp_freq(struct hid_sensor_common_attributes *attrb,
+ int buf_len, const char *buf)
+{
+ int value;
+ int conv_value;
+ int ret;
+
+ if (kstrtoint(buf, 10, &value) < 0)
+ return -EINVAL;
+
+ if (value > MAXIMUM_SAMP_FREQUENCY)
+ value = MAXIMUM_SAMP_FREQUENCY;
+
+ if (value && attrb->poll.units == HID_USAGE_SENSOR_UNITS_MILLISECOND)
+ conv_value = 1000/value;
+ else if (value && attrb->poll.units == HID_USAGE_SENSOR_UNITS_SECOND)
+ conv_value = 1/value;
+ else
+ conv_value = value; /*Assume HZ*/
+
+ ret = sensor_hub_set_feature(attrb->hsdev,
+ attrb->poll.report_id,
+ attrb->poll.index,
+ conv_value);
+
+ if (ret < 0)
+ return ret;
+ return strlen(buf);
+}
+EXPORT_SYMBOL_GPL(hid_sensor_write_samp_freq);
+
+ssize_t hid_sensor_read_hyst_raw(struct hid_sensor_common_attributes *attrb,
+ int buf_len, char *buf)
+{
+ __s32 value;
+ int len;
+ int ret;
+
+ ret = sensor_hub_get_feature(attrb->hsdev,
+ attrb->sensitivity.report_id,
+ attrb->sensitivity.index, &value);
+ if (ret < 0 || value < 0) {
+ len = sprintf(buf, "0\n");
+ hid_err(attrb->hsdev->hdev, "Failed\n");
+ } else
+ len = sprintf(buf, "units:%d,exp:%d,value:%d\n",
+ attrb->sensitivity.units,
+ attrb->sensitivity.unit_expo, value);
+ return len;
+}
+EXPORT_SYMBOL_GPL(hid_sensor_read_hyst_raw);
+
+ssize_t hid_sensor_write_hyst_raw(struct hid_sensor_common_attributes *attrb,
+ int buf_len, const char *buf)
+{
+ int value;
+ int ret;
+
+ if (kstrtoint(buf, 10, &value) < 0)
+ return -EINVAL;
+
+ if (value <= 0)
+ value = 0;
+ ret = sensor_hub_set_feature(attrb->hsdev,
+ attrb->sensitivity.report_id,
+ attrb->sensitivity.index,
+ value);
+
+ if (ret < 0)
+ return ret;
+
+ return strlen(buf);
+}
+EXPORT_SYMBOL_GPL(hid_sensor_write_hyst_raw);
+
+ssize_t hid_sensor_write_report_state(
+ struct hid_sensor_common_attributes *attrb,
+ int buf_len, const char *buf)
+{
+ int value;
+ int ret;
+
+ if (kstrtoint(buf, 10, &value) < 0)
+ return -EINVAL;
+
+ if (value <= 0)
+ value = 0;
+ ret = sensor_hub_set_feature(attrb->hsdev,
+ attrb->report_state.report_id,
+ attrb->report_state.index,
+ value);
+
+ if (ret < 0)
+ return ret;
+ return strlen(buf);
+}
+EXPORT_SYMBOL_GPL(hid_sensor_write_report_state);
+
+ssize_t hid_sensor_write_power_state(
+ struct hid_sensor_common_attributes *attrb,
+ int buf_len, const char *buf)
+{
+ int value;
+ int ret;
+
+ if (kstrtoint(buf, 10, &value) < 0)
+ return -EINVAL;
+
+ if (value <= 0)
+ value = 0;
+ ret = sensor_hub_set_feature(attrb->hsdev,
+ attrb->power_state.report_id,
+ attrb->power_state.index,
+ value);
+
+ if (ret < 0)
+ return ret;
+
+ return strlen(buf);
+}
+EXPORT_SYMBOL_GPL(hid_sensor_write_power_state);
+
+
+#ifdef CONFIG_PM
+static int sensor_hub_suspend(struct hid_device *hdev, pm_message_t message)
+{
+ struct sensor_hub_data *pdata = hid_get_drvdata(hdev);
+ struct hid_sensor_hub_callbacks_list *callback;
+
+ hid_dbg(hdev, " sensor_hub_suspend\n");
+ spin_lock(&pdata->dyn_lock);
+ list_for_each_entry(callback, &pdata->dyn_callback_list, list) {
+ if (callback->initialized && callback->usage_callback->suspend)
+ callback->usage_callback->suspend(
+ pdata->hsdev, callback->priv);
+ }
+ spin_unlock(&pdata->dyn_lock);
+ return 0;
+}
+
+static int sensor_hub_resume(struct hid_device *hdev)
+{
+ struct sensor_hub_data *pdata = hid_get_drvdata(hdev);
+ struct hid_sensor_hub_callbacks_list *callback;
+
+ hid_dbg(hdev, " sensor_hub_resume\n");
+ spin_lock(&pdata->dyn_lock);
+ list_for_each_entry(callback, &pdata->dyn_callback_list, list) {
+ if (callback->initialized && callback->usage_callback->resume)
+ callback->usage_callback->resume(
+ pdata->hsdev, callback->priv);
+ }
+ spin_unlock(&pdata->dyn_lock);
+ 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 (defined CONFIG_HID_SENSOR_HUB_DEBUG) || \
+ (defined CONFIG_HID_SENSOR_HUB_DEBUG_MODULE)
+ dump_raw_data(hdev, size, raw_data);
+#endif
+ 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 && pdata->pending->attr_usage_id ==
+ report->field[i]->usage->hid) {
+ hid_dbg(hdev, "data was pending ...\n");
+ sz = (sz > RAW_BUFFER_SIZE) ? RAW_BUFFER_SIZE : sz;
+ memcpy(pdata->pending->raw_data, ptr, sz);
+ pdata->pending->raw_size = sz;
+ 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,
+ collection->usage,
+ &priv);
+ if (callback && callback->capture_sample) {
+ 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;
+
+ 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;
+ spin_lock_init(&sd->lock);
+ spin_lock_init(&sd->dyn_lock);
+ mutex_init(&sd->mutex);
+ ret = hid_parse(hdev);
+ if (ret) {
+ hid_err(hdev, "parse failed\n");
+ goto err_free;
+ }
+#if (defined CONFIG_HID_SENSOR_HUB_DEBUG) || \
+ (defined CONFIG_HID_SENSOR_HUB_DEBUG_MODULE)
+ dump_report(hdev);
+#endif
+ 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);
+ hid_sensor_client_cnt = 0;
+ for (i = 0; i < hdev->maxcollection && i < MAX_HUB_SENSORS ; ++i) {
+ struct hid_collection *collection = &hdev->collection[i];
+ name = kmalloc(MAX_DRIVER_NAME_SIZE+1, GFP_KERNEL);
+ if (name == NULL) {
+ hid_err(hdev,
+ "memory alloc failed for MFD device name\n");
+ ret = -ENOMEM;
+ goto err_close;
+ }
+ snprintf(name, MAX_DRIVER_NAME_SIZE, "HID-SENSOR-%x",
+ collection->usage);
+ hid_sensor_hub_client_devs[i].name = name;
+ hid_sensor_hub_client_devs[i].platform_data = &sd->hsdev;
+ hid_sensor_hub_client_devs[i].pdata_size = sizeof(sd->hsdev);
+ hid_dbg(hdev, "Adding %s:%x\n", name, (unsigned int)sd);
+ hid_sensor_client_cnt++;
+ }
+ ret = mfd_add_devices(&hdev->dev, 0, hid_sensor_hub_client_devs,
+ hid_sensor_client_cnt, NULL, 0);
+ if (ret < 0) {
+ for (i = 0; i < hid_sensor_client_cnt ; ++i)
+ kfree(hid_sensor_hub_client_devs[i].name);
+ goto err_close;
+ }
+ return ret;
+
+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)
+ complete(&data->pending->ready);
+ spin_unlock_irqrestore(&data->lock, flags);
+ mfd_remove_devices(&hdev->dev);
+ for (i = 0; i < hid_sensor_client_cnt ; ++i)
+ kfree(hid_sensor_hub_client_devs[i].name);
+ 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) },
+ { }
+};
+
+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@xxxxxxxxx>");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/hid-sensor-hub.h b/include/linux/hid-sensor-hub.h
new file mode 100644
index 0000000..f7ce790
--- /dev/null
+++ b/include/linux/hid-sensor-hub.h
@@ -0,0 +1,99 @@
+/*
+ * 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 {
+ u32 usage_id;
+ u32 attrib_id;
+ s32 report_id;
+ s32 index;
+ s32 units;
+ s32 unit_expo;
+ s32 size;
+};
+
+struct hid_sensor_common_attributes {
+ struct hid_sensor_hub_device *hsdev;
+ unsigned usage_id;
+ struct hid_sensor_hub_attribute_info poll;
+ struct hid_sensor_hub_attribute_info report_state;
+ struct hid_sensor_hub_attribute_info power_state;
+ struct hid_sensor_hub_attribute_info sensitivity;
+};
+
+struct hid_sensor_hub_device {
+ struct hid_device *hdev;
+};
+
+
+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);
+};
+
+/* Registeration functions */
+int sensor_hub_register_callback(struct hid_sensor_hub_device *hsdev,
+ u32 usage_id,
+ struct hid_sensor_hub_callbacks *usage_callback);
+int sensor_hub_remove_callback(struct hid_sensor_hub_device *hsdev,
+ u32 usage_id);
+
+/* Hid sensor hub core interfaces */
+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);
+int sensor_hub_input_attr_get_raw_value(struct hid_sensor_hub_device *hsdev,
+ u32 usage_id,
+ u32 attr_usage_id, u32 report_id);
+int sensor_hub_set_feature(struct hid_sensor_hub_device *hsdev, u32 report_id,
+ u32 field_index, s32 value);
+int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id,
+ u32 field_index, s32 *value);
+
+struct hid_sensor_common_attributes *sensor_hub_allocate_common_attributes(
+ struct hid_sensor_hub_device *hsdev,
+ unsigned usage_id);
+void sensor_hub_free_common_attributes(
+ struct hid_sensor_common_attributes *attrb);
+ssize_t hid_sensor_read_samp_freq(struct hid_sensor_common_attributes *attrb,
+ int buf_len, char *buf);
+ssize_t hid_sensor_write_samp_freq(struct hid_sensor_common_attributes *attrb,
+ int buf_len, const char *buf);
+ssize_t hid_sensor_read_hyst_raw(struct hid_sensor_common_attributes *attrb,
+ int buf_len, char *buf);
+ssize_t hid_sensor_write_hyst_raw(struct hid_sensor_common_attributes *attrb,
+ int buf_len, const char *buf);
+ssize_t hid_sensor_write_report_state(
+ struct hid_sensor_common_attributes *attrb,
+ int buf_len, const char *buf);
+ssize_t hid_sensor_write_power_state(
+ struct hid_sensor_common_attributes *attrb,
+ int buf_len, const char *buf);
+#endif
diff --git a/include/linux/hid-sensor-ids.h b/include/linux/hid-sensor-ids.h
new file mode 100644
index 0000000..34cc779
--- /dev/null
+++ b/include/linux/hid-sensor-ids.h
@@ -0,0 +1,116 @@
+/*
+ * 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_SENSOR_POLLING 0x0020030E
+#define HID_SENSOR_REPORT_STATE 0x00200316
+#define HID_SENSOR_POWER_STATE 0x00200319
+
+
+/* Accel 3D (200073) */
+#define HID_USAGE_SENSOR_ACCEL_3D 0x200073
+#define HID_USAGE_SENSOR_DATA_MOTION_ACCELERATION_X_AXIS 0x200453
+#define HID_USAGE_SENSOR_DATA_MOTION_ACCELERATION_Y_AXIS 0x200454
+#define HID_USAGE_SENSOR_DATA_MOTION_ACCELERATION_Z_AXIS 0x200455
+
+/* ALS (200041) */
+#define HID_USAGE_SENSOR_ALS 0x200041
+#define HID_USAGE_SENSOR_DATA_LIGHT_ILLUMINANCE 0x2004d1
+
+/* Compass 3D: (200083) */
+
+/* Gyro 3D: (200076) */
+#define HID_USAGE_SENSOR_GYRO_3D 0x200076
+#define HID_USAGE_SENSOR_DATA_MOTION_ANGULAR_VELOCITY_X_AXIS 0x200457
+#define HID_USAGE_SENSOR_DATA_MOTION_ANGULAR_VELOCITY_Y_AXIS 0x200458
+#define HID_USAGE_SENSOR_DATA_MOTION_ANGULAR_VELOCITY_Z_AXIS 0x200459
+
+/*ORIENTATION: Compass 3D: (200083) */
+#define HID_USAGE_SENSOR_COMPASS_3D 0x200083
+#define HID_USAGE_SENSOR_DATA_ORIENTATION_MAGNETIC_HEADING 0x200471
+#define HID_USAGE_SENSOR_DATA_ORIENTATION_MAGNETIC_HEADING_X 0x200472
+#define HID_USAGE_SENSOR_DATA_ORIENTATION_MAGNETIC_HEADING_Y 0x200473
+#define HID_USAGE_SENSOR_DATA_ORIENTATION_MAGNETIC_HEADING_Z 0x200474
+
+#define HID_USAGE_SENSOR_DATA_ORIENTATION_COMPENSATED_MAGNETIC_NORTH 0x200475
+#define HID_USAGE_SENSOR_DATA_ORIENTATION_COMPENSATED_TRUE_NORTH 0x200476
+#define HID_USAGE_SENSOR_DATA_ORIENTATION_MAGNETIC_NORTH 0x200477
+#define HID_USAGE_SENSOR_DATA_ORIENTATION_TRUE_NORTH 0x200478
+
+#define HID_USAGE_SENSOR_DATA_ORIENTATION_DISTANCE 0x200479
+#define HID_USAGE_SENSOR_DATA_ORIENTATION_DISTANCE_X 0x20047A
+#define HID_USAGE_SENSOR_DATA_ORIENTATION_DISTANCE_Y 0x20047B
+#define HID_USAGE_SENSOR_DATA_ORIENTATION_DISTANCE_Z 0x20047C
+#define HID_USAGE_SENSOR_DATA_ORIENTATION_DISTANCE_OUT_OF_RANGE 0x20047D
+#define HID_USAGE_SENSOR_DATA_ORIENTATION_TILT 0x20047E
+#define HID_USAGE_SENSOR_DATA_ORIENTATION_TILT_X 0x20047F
+#define HID_USAGE_SENSOR_DATA_ORIENTATION_TILT_Y 0x200480
+#define HID_USAGE_SENSOR_DATA_ORIENTATION_TILT_Z 0x200481
+#define HID_USAGE_SENSOR_DATA_ORIENTATION_ROTATION_MATRIX 0x200482
+#define HID_USAGE_SENSOR_DATA_ORIENTATION_QUATERNION 0x200483
+#define HID_USAGE_SENSOR_DATA_ORIENTATION_MAGNETIC_FLUX 0x200484
+
+#define HID_USAGE_SENSOR_DATA_ORIENTATION_MAGNETIC_FLUX_X_AXIS 0x200485
+#define HID_USAGE_SENSOR_DATA_ORIENTATION_MAGNETIC_FLUX_Y_AXIS 0x200486
+#define HID_USAGE_SENSOR_DATA_ORIENTATION_MAGNETIC_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_PROPERTY_REPORT_INTERVAL 0x20030E
+#define HID_USAGE_SENSOR_PROPERTY_CHANGE_SENSITIVITY_ABS 0x20030F
+#define HID_USAGE_SENSOR_PROPERTY_CHANGE_SENSITIVITY_RANGE_PCT 0x200310
+#define HID_USAGE_SENSOR_PROPERTY_CHANGE_SENSITIVITY_REL_PCT 0x200311
+#define HID_USAGE_SENSOR_PROPERTY_ACCURACY 0x200312
+#define HID_USAGE_SENSOR_PROPERTY_RESOLUTION 0x200313
+#define HID_USAGE_SENSOR_PROPERTY_RANGE_MAXIMUM 0x200314
+#define HID_USAGE_SENSOR_PROPERTY_RANGE_MINIMUM 0x200315
+#define HID_USAGE_SENSOR_PROPERTY_REPORTING_STATE 0x200316
+
+#endif
--
1.7.7.6
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