cregit-Linux how code gets into the kernel

Release 4.7 drivers/hid/hid-sensor-hub.c

Directory: drivers/hid
/*
 * 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/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 HID_SENSOR_HUB_ENUM_QUIRK	0x01

/**
 * struct sensor_hub_data - Hold a instance data for a HID hub device
 * @hsdev:              Stored hid instance for current hub device.
 * @mutex:              Mutex to serialize synchronous request.
 * @lock:               Spin lock to protect pending request structure.
 * @dyn_callback_list:  Holds callback function
 * @dyn_callback_lock:  spin lock to protect callback list
 * @hid_sensor_hub_client_devs: Stores all MFD cells for a hub instance.
 * @hid_sensor_client_cnt: Number of MFD cells, (no of sensors attached).
 * @ref_cnt:            Number of MFD clients have opened this device
 */

struct sensor_hub_data {
	
struct mutex mutex;
	
spinlock_t lock;
	
struct list_head dyn_callback_list;
	
spinlock_t dyn_callback_lock;
	
struct mfd_cell *hid_sensor_hub_client_devs;
	
int hid_sensor_client_cnt;
	
unsigned long quirks;
	
int ref_cnt;
};

/**
 * struct hid_sensor_hub_callbacks_list - Stores callback list
 * @list:               list head.
 * @usage_id:           usage id for a physical device.
 * @usage_callback:     Stores registered callback functions.
 * @priv:               Private data for a physical device.
 */

struct hid_sensor_hub_callbacks_list {
	
struct list_head list;
	
u32 usage_id;
	
struct hid_sensor_hub_device *hsdev;
	
struct hid_sensor_hub_callbacks *usage_callback;
	
void *priv;
};


static struct hid_report *sensor_hub_report(int id, struct hid_device *hdev, int dir) { struct hid_report *report; list_for_each_entry(report, &hdev->report_enum[dir].report_list, list) { if (report->id == id) return report; } hid_warn(hdev, "No report with id 0x%x found\n", id); return NULL; }

Contributors

PersonTokensPropCommitsCommitProp
srinivas pandruvadasrinivas pandruvada57100.00%1100.00%
Total57100.00%1100.00%


static int sensor_hub_get_physical_device_count(struct hid_device *hdev) { int i; int count = 0; for (i = 0; i < hdev->maxcollection; ++i) { struct hid_collection *collection = &hdev->collection[i]; if (collection->type == HID_COLLECTION_PHYSICAL || collection->type == HID_COLLECTION_APPLICATION) ++count; } return count; }

Contributors

PersonTokensPropCommitsCommitProp
srinivas pandruvadasrinivas pandruvada69100.00%3100.00%
Total69100.00%3100.00%


static void sensor_hub_fill_attr_info( struct hid_sensor_hub_attribute_info *info, s32 index, s32 report_id, struct hid_field *field) { info->index = index; info->report_id = report_id; info->units = field->unit; info->unit_expo = field->unit_exponent; info->size = (field->report_size * field->report_count)/8; info->logical_minimum = field->logical_minimum; info->logical_maximum = field->logical_maximum; }

Contributors

PersonTokensPropCommitsCommitProp
srinivas pandruvadasrinivas pandruvada82100.00%2100.00%
Total82100.00%2100.00%


static struct hid_sensor_hub_callbacks *sensor_hub_get_callback( struct hid_device *hdev, u32 usage_id, int collection_index, struct hid_sensor_hub_device **hsdev, void **priv) { struct hid_sensor_hub_callbacks_list *callback; struct sensor_hub_data *pdata = hid_get_drvdata(hdev); unsigned long flags; spin_lock_irqsave(&pdata->dyn_callback_lock, flags); list_for_each_entry(callback, &pdata->dyn_callback_list, list) if ((callback->usage_id == usage_id || callback->usage_id == HID_USAGE_SENSOR_COLLECTION) && (collection_index >= callback->hsdev->start_collection_index) && (collection_index < callback->hsdev->end_collection_index)) { *priv = callback->priv; *hsdev = callback->hsdev; spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); return callback->usage_callback; } spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); return NULL; }

Contributors

PersonTokensPropCommitsCommitProp
srinivas pandruvadasrinivas pandruvada147100.00%4100.00%
Total147100.00%4100.00%


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 = hid_get_drvdata(hsdev->hdev); unsigned long flags; spin_lock_irqsave(&pdata->dyn_callback_lock, flags); list_for_each_entry(callback, &pdata->dyn_callback_list, list) if (callback->usage_id == usage_id && callback->hsdev == hsdev) { spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); return -EINVAL; } callback = kzalloc(sizeof(*callback), GFP_ATOMIC); if (!callback) { spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); return -ENOMEM; } callback->hsdev = hsdev; callback->usage_callback = usage_callback; callback->usage_id = usage_id; callback->priv = NULL; /* * If there is a handler registered for the collection type, then * it will handle all reports for sensors in this collection. If * there is also an individual sensor handler registration, then * we want to make sure that the reports are directed to collection * handler, as this may be a fusion sensor. So add collection handlers * to the beginning of the list, so that they are matched first. */ if (usage_id == HID_USAGE_SENSOR_COLLECTION) list_add(&callback->list, &pdata->dyn_callback_list); else list_add_tail(&callback->list, &pdata->dyn_callback_list); spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
srinivas pandruvadasrinivas pandruvada17591.15%360.00%
jiri kosinajiri kosina168.33%120.00%
dan carpenterdan carpenter10.52%120.00%
Total192100.00%5100.00%

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; struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev); unsigned long flags; spin_lock_irqsave(&pdata->dyn_callback_lock, flags); list_for_each_entry(callback, &pdata->dyn_callback_list, list) if (callback->usage_id == usage_id && callback->hsdev == hsdev) { list_del(&callback->list); kfree(callback); break; } spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
srinivas pandruvadasrinivas pandruvada8589.47%266.67%
jiri kosinajiri kosina1010.53%133.33%
Total95100.00%3100.00%

EXPORT_SYMBOL_GPL(sensor_hub_remove_callback);
int sensor_hub_set_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, u32 field_index, int buffer_size, void *buffer) { struct hid_report *report; struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); __s32 *buf32 = buffer; int i = 0; int remaining_bytes; __s32 value; int ret = 0; mutex_lock(&data->mutex); report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); if (!report || (field_index >= report->maxfield)) { ret = -EINVAL; goto done_proc; } remaining_bytes = buffer_size % sizeof(__s32); buffer_size = buffer_size / sizeof(__s32); if (buffer_size) { for (i = 0; i < buffer_size; ++i) { hid_set_field(report->field[field_index], i, (__force __s32)cpu_to_le32(*buf32)); ++buf32; } } if (remaining_bytes) { value = 0; memcpy(&value, (u8 *)buf32, remaining_bytes); hid_set_field(report->field[field_index], i, (__force __s32)cpu_to_le32(value)); } hid_hw_request(hsdev->hdev, report, HID_REQ_SET_REPORT); hid_hw_wait(hsdev->hdev); done_proc: mutex_unlock(&data->mutex); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
srinivas pandruvadasrinivas pandruvada23495.12%350.00%
nicolas pitrenicolas pitre93.66%116.67%
benjamin tissoiresbenjamin tissoires31.22%233.33%
Total246100.00%6100.00%

EXPORT_SYMBOL_GPL(sensor_hub_set_feature);
int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, u32 field_index, int buffer_size, void *buffer) { struct hid_report *report; struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); int report_size; int ret = 0; mutex_lock(&data->mutex); report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); if (!report || (field_index >= report->maxfield) || report->field[field_index]->report_count < 1) { ret = -EINVAL; goto done_proc; } hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); hid_hw_wait(hsdev->hdev); /* calculate number of bytes required to read this field */ report_size = DIV_ROUND_UP(report->field[field_index]->report_size, 8) * report->field[field_index]->report_count; if (!report_size) { ret = -EINVAL; goto done_proc; } ret = min(report_size, buffer_size); memcpy(buffer, report->field[field_index]->value, ret); done_proc: mutex_unlock(&data->mutex); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
srinivas pandruvadasrinivas pandruvada18693.00%240.00%
kees cookkees cook115.50%120.00%
benjamin tissoiresbenjamin tissoires31.50%240.00%
Total200100.00%5100.00%

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, enum sensor_hub_read_flags flag) { struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); unsigned long flags; struct hid_report *report; int ret_val = 0; report = sensor_hub_report(report_id, hsdev->hdev, HID_INPUT_REPORT); if (!report) return -EINVAL; mutex_lock(hsdev->mutex_ptr); if (flag == SENSOR_HUB_SYNC) { memset(&hsdev->pending, 0, sizeof(hsdev->pending)); init_completion(&hsdev->pending.ready); hsdev->pending.usage_id = usage_id; hsdev->pending.attr_usage_id = attr_usage_id; hsdev->pending.raw_size = 0; spin_lock_irqsave(&data->lock, flags); hsdev->pending.status = true; spin_unlock_irqrestore(&data->lock, flags); } mutex_lock(&data->mutex); hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); mutex_unlock(&data->mutex); if (flag == SENSOR_HUB_SYNC) { wait_for_completion_interruptible_timeout( &hsdev->pending.ready, HZ*5); switch (hsdev->pending.raw_size) { case 1: ret_val = *(u8 *)hsdev->pending.raw_data; break; case 2: ret_val = *(u16 *)hsdev->pending.raw_data; break; case 4: ret_val = *(u32 *)hsdev->pending.raw_data; break; default: ret_val = 0; } kfree(hsdev->pending.raw_data); hsdev->pending.status = false; } mutex_unlock(hsdev->mutex_ptr); return ret_val; }

Contributors

PersonTokensPropCommitsCommitProp
srinivas pandruvadasrinivas pandruvada30599.35%583.33%
benjamin tissoiresbenjamin tissoires20.65%116.67%
Total307100.00%6100.00%

EXPORT_SYMBOL_GPL(sensor_hub_input_attr_get_raw_value);
int hid_sensor_get_usage_index(struct hid_sensor_hub_device *hsdev, u32 report_id, int field_index, u32 usage_id) { struct hid_report *report; struct hid_field *field; int i; report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); if (!report || (field_index >= report->maxfield)) goto done_proc; field = report->field[field_index]; for (i = 0; i < field->maxusage; ++i) { if (field->usage[i].hid == usage_id) return field->usage[i].usage_index; } done_proc: return -EINVAL; }

Contributors

PersonTokensPropCommitsCommitProp
srinivas pandruvadasrinivas pandruvada116100.00%2100.00%
Total116100.00%2100.00%

EXPORT_SYMBOL_GPL(hid_sensor_get_usage_index);
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; 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; 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]; if (field->maxusage) { if (field->physical == usage_id && (field->logical == attr_usage_id || field->usage[0].hid == attr_usage_id) && (field->usage[0].collection_index >= hsdev->start_collection_index) && (field->usage[0].collection_index < hsdev->end_collection_index)) { sensor_hub_fill_attr_info(info, i, report->id, field); ret = 0; break; } } } } return ret; }

Contributors

PersonTokensPropCommitsCommitProp
srinivas pandruvadasrinivas pandruvada232100.00%2100.00%
Total232100.00%2100.00%

EXPORT_SYMBOL_GPL(sensor_hub_input_get_attribute_info); #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; unsigned long flags; hid_dbg(hdev, " sensor_hub_suspend\n"); spin_lock_irqsave(&pdata->dyn_callback_lock, flags); list_for_each_entry(callback, &pdata->dyn_callback_list, list) { if (callback->usage_callback->suspend) callback->usage_callback->suspend( callback->hsdev, callback->priv); } spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
srinivas pandruvadasrinivas pandruvada8689.58%266.67%
jiri kosinajiri kosina1010.42%133.33%
Total96100.00%3100.00%


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; unsigned long flags; hid_dbg(hdev, " sensor_hub_resume\n"); spin_lock_irqsave(&pdata->dyn_callback_lock, flags); list_for_each_entry(callback, &pdata->dyn_callback_list, list) { if (callback->usage_callback->resume) callback->usage_callback->resume( callback->hsdev, callback->priv); } spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
srinivas pandruvadasrinivas pandruvada8389.25%266.67%
jiri kosinajiri kosina1010.75%133.33%
Total93100.00%3100.00%


static int sensor_hub_reset_resume(struct hid_device *hdev) { return 0; }

Contributors

PersonTokensPropCommitsCommitProp
srinivas pandruvadasrinivas pandruvada14100.00%1100.00%
Total14100.00%1100.00%

#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; struct hid_sensor_hub_device *hsdev = 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 */ 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 * report->field[i]->report_count)/8); sz = (report->field[i]->report_size * report->field[i]->report_count)/8; collection = &hdev->collection[ report->field[i]->usage->collection_index]; hid_dbg(hdev, "collection->usage %x\n", collection->usage); callback = sensor_hub_get_callback(hdev, report->field[i]->physical, report->field[i]->usage[0].collection_index, &hsdev, &priv); if (!callback) { ptr += sz; continue; } if (hsdev->pending.status && (hsdev->pending.attr_usage_id == report->field[i]->usage->hid || hsdev->pending.attr_usage_id == report->field[i]->logical)) { hid_dbg(hdev, "data was pending ...\n"); hsdev->pending.raw_data = kmemdup(ptr, sz, GFP_ATOMIC); if (hsdev->pending.raw_data) hsdev->pending.raw_size = sz; else hsdev->pending.raw_size = 0; complete(&hsdev->pending.ready); } if (callback->capture_sample) { if (report->field[i]->logical) callback->capture_sample(hsdev, report->field[i]->logical, sz, ptr, callback->pdev); else callback->capture_sample(hsdev, report->field[i]->usage->hid, sz, ptr, callback->pdev); } ptr += sz; } if (callback && collection && callback->send_event) callback->send_event(hsdev, collection->usage, callback->pdev); spin_unlock_irqrestore(&pdata->lock, flags); return 1; }

Contributors

PersonTokensPropCommitsCommitProp
srinivas pandruvadasrinivas pandruvada51199.03%562.50%
andy shevchenkoandy shevchenko40.78%225.00%
dan carpenterdan carpenter10.19%112.50%
Total516100.00%8100.00%


int sensor_hub_device_open(struct hid_sensor_hub_device *hsdev) { int ret = 0; struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); mutex_lock(&data->mutex); if (!data->ref_cnt) { ret = hid_hw_open(hsdev->hdev); if (ret) { hid_err(hsdev->hdev, "failed to open hid device\n"); mutex_unlock(&data->mutex); return ret; } } data->ref_cnt++; mutex_unlock(&data->mutex); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
srinivas pandruvadasrinivas pandruvada95100.00%2100.00%
Total95100.00%2100.00%

EXPORT_SYMBOL_GPL(sensor_hub_device_open);
void sensor_hub_device_close(struct hid_sensor_hub_device *hsdev) { struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); mutex_lock(&data->mutex); data->ref_cnt--; if (!data->ref_cnt) hid_hw_close(hsdev->hdev); mutex_unlock(&data->mutex); }

Contributors

PersonTokensPropCommitsCommitProp
srinivas pandruvadasrinivas pandruvada57100.00%2100.00%
Total57100.00%2100.00%

EXPORT_SYMBOL_GPL(sensor_hub_device_close);
static __u8 *sensor_hub_report_fixup(struct hid_device *hdev, __u8 *rdesc, unsigned int *rsize) { int index; struct sensor_hub_data *sd = hid_get_drvdata(hdev); unsigned char report_block[] = { 0x0a, 0x16, 0x03, 0x15, 0x00, 0x25, 0x05}; unsigned char power_block[] = { 0x0a, 0x19, 0x03, 0x15, 0x00, 0x25, 0x05}; if (!(sd->quirks & HID_SENSOR_HUB_ENUM_QUIRK)) { hid_dbg(hdev, "No Enum quirks\n"); return rdesc; } /* Looks for power and report state usage id and force to 1 */ for (index = 0; index < *rsize; ++index) { if (((*rsize - index) > sizeof(report_block)) && !memcmp(&rdesc[index], report_block, sizeof(report_block))) { rdesc[index + 4] = 0x01; index += sizeof(report_block); } if (((*rsize - index) > sizeof(power_block)) && !memcmp(&rdesc[index], power_block, sizeof(power_block))) { rdesc[index + 4] = 0x01; index += sizeof(power_block); } } /* Checks if the report descriptor of Thinkpad Helix 2 has a logical * minimum for magnetic flux axis greater than the maximum */ if (hdev->product == USB_DEVICE_ID_TEXAS_INSTRUMENTS_LENOVO_YOGA && *rsize == 2558 && rdesc[913] == 0x17 && rdesc[914] == 0x40 && rdesc[915] == 0x81 && rdesc[916] == 0x08 && rdesc[917] == 0x00 && rdesc[918] == 0x27 && rdesc[921] == 0x07 && rdesc[922] == 0x00) { /* Sets negative logical minimum for mag x, y and z */ rdesc[914] = rdesc[935] = rdesc[956] = 0xc0; rdesc[915] = rdesc[936] = rdesc[957] = 0x7e; rdesc[916] = rdesc[937] = rdesc[958] = 0xf7; rdesc[917] = rdesc[938] = rdesc[959] = 0xff; } return rdesc; }

Contributors

PersonTokensPropCommitsCommitProp
srinivas pandruvadasrinivas pandruvada22161.05%150.00%
fernando d s limafernando d s lima14138.95%150.00%
Total362100.00%2100.00%


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; int dev_cnt; struct hid_sensor_hub_device *hsdev; struct hid_sensor_hub_device *last_hsdev = NULL; struct hid_sensor_hub_device *collection_hsdev = NULL; sd = devm_kzalloc(&hdev->dev, sizeof(*sd), GFP_KERNEL); if (!sd) { hid_err(hdev, "cannot allocate Sensor data\n"); return -ENOMEM; } hid_set_drvdata(hdev, sd); sd->quirks = id->driver_data; 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"); return ret; } INIT_LIST_HEAD(&hdev->inputs); ret = hid_hw_start(hdev, 0); if (ret) { hid_err(hdev, "hw start failed\n"); return ret; } INIT_LIST_HEAD(&sd->dyn_callback_list); sd->hid_sensor_client_cnt = 0; dev_cnt = sensor_hub_get_physical_device_count(hdev); if (dev_cnt > HID_MAX_PHY_DEVICES) { hid_err(hdev, "Invalid Physical device count\n"); ret = -EINVAL; goto err_stop_hw; } sd->hid_sensor_hub_client_devs = devm_kzalloc(&hdev->dev, 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_stop_hw; } for (i = 0; i < hdev->maxcollection; ++i) { struct hid_collection *collection = &hdev->collection[i]; if (collection->type == HID_COLLECTION_PHYSICAL || collection->type == HID_COLLECTION_APPLICATION) { hsdev = devm_kzalloc(&hdev->dev, sizeof(*hsdev), GFP_KERNEL); if (!hsdev) { hid_err(hdev, "cannot allocate hid_sensor_hub_device\n"); ret = -ENOMEM; goto err_stop_hw; } hsdev->hdev = hdev; hsdev->vendor_id = hdev->vendor; hsdev->product_id = hdev->product; hsdev->usage = collection->usage; hsdev->mutex_ptr = devm_kzalloc(&hdev->dev, sizeof(struct mutex), GFP_KERNEL); if (!hsdev->mutex_ptr) { ret = -ENOMEM; goto err_stop_hw; } mutex_init(hsdev->mutex_ptr); hsdev->start_collection_index = i; if (last_hsdev) last_hsdev->end_collection_index = i; last_hsdev = hsdev; name = devm_kasprintf(&hdev->dev, GFP_KERNEL, "HID-SENSOR-%x", collection->usage); if (name == NULL) { hid_err(hdev, "Failed MFD device name\n"); ret = -ENOMEM; goto err_stop_hw; } 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 = hsdev; sd->hid_sensor_hub_client_devs[ sd->hid_sensor_client_cnt].pdata_size = sizeof(*hsdev); hid_dbg(hdev, "Adding %s:%d\n", name, hsdev->start_collection_index); sd->hid_sensor_client_cnt++; if (collection_hsdev) collection_hsdev->end_collection_index = i; if (collection->type == HID_COLLECTION_APPLICATION && collection->usage == HID_USAGE_SENSOR_COLLECTION) collection_hsdev = hsdev; } } if (last_hsdev) last_hsdev->end_collection_index = i; if (collection_hsdev) collection_hsdev->end_collection_index = i; ret = mfd_add_hotplug_devices(&hdev->dev, sd->hid_sensor_hub_client_devs, sd->hid_sensor_client_cnt); if (ret < 0) goto err_stop_hw; return ret; err_stop_hw: hid_hw_stop(hdev); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
srinivas pandruvadasrinivas pandruvada61094.43%770.00%
himangi saraogihimangi saraogi213.25%110.00%
andy shevchenkoandy shevchenko142.17%110.00%
johan hovoldjohan hovold10.15%110.00%
Total646100.00%10100.00%


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"); hid_hw_close(hdev); hid_hw_stop(hdev); spin_lock_irqsave(&data->lock, flags); for (i = 0; i < data->hid_sensor_client_cnt; ++i) { struct hid_sensor_hub_device *hsdev = data->hid_sensor_hub_client_devs[i].platform_data; if (hsdev->pending.status) complete(&hsdev->pending.ready); } spin_unlock_irqrestore(&data->lock, flags); mfd_remove_devices(&hdev->dev); hid_set_drvdata(hdev, NULL); mutex_destroy(&data->mutex); }

Contributors

PersonTokensPropCommitsCommitProp
srinivas pandruvadasrinivas pandruvada13598.54%266.67%
axel linaxel lin21.46%133.33%
Total137100.00%3100.00%

static const struct hid_device_id sensor_hub_devices[] = { { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_0, USB_DEVICE_ID_INTEL_HID_SENSOR_0), .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_1, USB_DEVICE_ID_INTEL_HID_SENSOR_0), .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_1, USB_DEVICE_ID_INTEL_HID_SENSOR_1), .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_SURFACE_PRO_2), .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TOUCH_COVER_2), .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_2), .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_STM_0, USB_DEVICE_ID_STM_HID_SENSOR), .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_STM_0, USB_DEVICE_ID_STM_HID_SENSOR_1), .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_TEXAS_INSTRUMENTS, USB_DEVICE_ID_TEXAS_INSTRUMENTS_LENOVO_YOGA), .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_ITE, USB_DEVICE_ID_ITE_LENOVO_YOGA), .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_ITE, USB_DEVICE_ID_ITE_LENOVO_YOGA2), .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_ITE, USB_DEVICE_ID_ITE_LENOVO_YOGA900), .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, HID_ANY_ID, HID_ANY_ID) }, { } }; MODULE_DEVICE_TABLE(hid, sensor_hub_devices); 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, .report_fixup = sensor_hub_report_fixup, #ifdef CONFIG_PM .suspend = sensor_hub_suspend, .resume = sensor_hub_resume, .reset_resume = sensor_hub_reset_resume, #endif }; module_hid_driver(sensor_hub_driver); MODULE_DESCRIPTION("HID Sensor Hub driver"); MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>"); MODULE_LICENSE("GPL");

Overall Contributors

PersonTokensPropCommitsCommitProp
srinivas pandruvadasrinivas pandruvada381790.26%1945.24%
fernando d s limafernando d s lima1413.33%12.38%
jiri kosinajiri kosina511.21%24.76%
reyad attiyatreyad attiyat380.90%12.38%
archana patniarchana patni290.69%12.38%
himangi saraogihimangi saraogi210.50%12.38%
stephen chandler paulstephen chandler paul200.47%12.38%
guilhem lettronguilhem lettron180.43%12.38%
peter f. patel-schneiderpeter f. patel-schneider180.43%12.38%
andy shevchenkoandy shevchenko180.43%37.14%
ritesh raj sarrafritesh raj sarraf180.43%12.38%
kees cookkees cook110.26%12.38%
nicolas pitrenicolas pitre90.21%12.38%
benjamin tissoiresbenjamin tissoires80.19%24.76%
alexander holleralexander holler40.09%12.38%
axel linaxel lin20.05%12.38%
dan carpenterdan carpenter20.05%12.38%
h hartley sweetenh hartley sweeten20.05%12.38%
johan hovoldjohan hovold10.02%12.38%
mika westerbergmika westerberg10.02%12.38%
Total4229100.00%42100.00%
Directory: drivers/hid
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
{% endraw %}