srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 1 | /* |
| 2 | * HID Sensors Driver |
| 3 | * Copyright (c) 2012, Intel Corporation. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms and conditions of the GNU General Public License, |
| 7 | * version 2, as published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 12 | * more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License along with |
| 15 | * this program; if not, write to the Free Software Foundation, Inc., |
| 16 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
| 17 | * |
| 18 | */ |
Srinivas Pandruvada | 930fafd | 2016-08-07 02:25:38 -0700 | [diff] [blame] | 19 | |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 20 | #include <linux/device.h> |
| 21 | #include <linux/hid.h> |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 22 | #include <linux/module.h> |
| 23 | #include <linux/slab.h> |
| 24 | #include <linux/mfd/core.h> |
| 25 | #include <linux/list.h> |
| 26 | #include <linux/hid-sensor-ids.h> |
| 27 | #include <linux/hid-sensor-hub.h> |
| 28 | #include "hid-ids.h" |
| 29 | |
Srinivas Pandruvada | 875e36f | 2014-01-14 09:30:20 -0800 | [diff] [blame] | 30 | #define HID_SENSOR_HUB_ENUM_QUIRK 0x01 |
| 31 | |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 32 | /** |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 33 | * struct sensor_hub_data - Hold a instance data for a HID hub device |
| 34 | * @hsdev: Stored hid instance for current hub device. |
| 35 | * @mutex: Mutex to serialize synchronous request. |
| 36 | * @lock: Spin lock to protect pending request structure. |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 37 | * @dyn_callback_list: Holds callback function |
| 38 | * @dyn_callback_lock: spin lock to protect callback list |
| 39 | * @hid_sensor_hub_client_devs: Stores all MFD cells for a hub instance. |
| 40 | * @hid_sensor_client_cnt: Number of MFD cells, (no of sensors attached). |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 41 | * @ref_cnt: Number of MFD clients have opened this device |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 42 | */ |
| 43 | struct sensor_hub_data { |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 44 | struct mutex mutex; |
| 45 | spinlock_t lock; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 46 | struct list_head dyn_callback_list; |
| 47 | spinlock_t dyn_callback_lock; |
| 48 | struct mfd_cell *hid_sensor_hub_client_devs; |
| 49 | int hid_sensor_client_cnt; |
Srinivas Pandruvada | 875e36f | 2014-01-14 09:30:20 -0800 | [diff] [blame] | 50 | unsigned long quirks; |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 51 | int ref_cnt; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 52 | }; |
| 53 | |
| 54 | /** |
| 55 | * struct hid_sensor_hub_callbacks_list - Stores callback list |
| 56 | * @list: list head. |
| 57 | * @usage_id: usage id for a physical device. |
| 58 | * @usage_callback: Stores registered callback functions. |
| 59 | * @priv: Private data for a physical device. |
| 60 | */ |
| 61 | struct hid_sensor_hub_callbacks_list { |
| 62 | struct list_head list; |
| 63 | u32 usage_id; |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 64 | struct hid_sensor_hub_device *hsdev; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 65 | struct hid_sensor_hub_callbacks *usage_callback; |
| 66 | void *priv; |
| 67 | }; |
| 68 | |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 69 | static struct hid_report *sensor_hub_report(int id, struct hid_device *hdev, |
| 70 | int dir) |
| 71 | { |
| 72 | struct hid_report *report; |
| 73 | |
| 74 | list_for_each_entry(report, &hdev->report_enum[dir].report_list, list) { |
| 75 | if (report->id == id) |
| 76 | return report; |
| 77 | } |
| 78 | hid_warn(hdev, "No report with id 0x%x found\n", id); |
| 79 | |
| 80 | return NULL; |
| 81 | } |
| 82 | |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 83 | static int sensor_hub_get_physical_device_count(struct hid_device *hdev) |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 84 | { |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 85 | int i; |
| 86 | int count = 0; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 87 | |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 88 | for (i = 0; i < hdev->maxcollection; ++i) { |
| 89 | struct hid_collection *collection = &hdev->collection[i]; |
Srinivas Pandruvada | cb67126 | 2015-02-19 15:31:26 -0800 | [diff] [blame] | 90 | if (collection->type == HID_COLLECTION_PHYSICAL || |
| 91 | collection->type == HID_COLLECTION_APPLICATION) |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 92 | ++count; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 93 | } |
| 94 | |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 95 | return count; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 96 | } |
| 97 | |
| 98 | static void sensor_hub_fill_attr_info( |
| 99 | struct hid_sensor_hub_attribute_info *info, |
Srinivas Pandruvada | 9f740ff | 2013-11-27 22:19:00 +0000 | [diff] [blame] | 100 | s32 index, s32 report_id, struct hid_field *field) |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 101 | { |
| 102 | info->index = index; |
| 103 | info->report_id = report_id; |
Srinivas Pandruvada | 9f740ff | 2013-11-27 22:19:00 +0000 | [diff] [blame] | 104 | info->units = field->unit; |
| 105 | info->unit_expo = field->unit_exponent; |
| 106 | info->size = (field->report_size * field->report_count)/8; |
| 107 | info->logical_minimum = field->logical_minimum; |
| 108 | info->logical_maximum = field->logical_maximum; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 109 | } |
| 110 | |
| 111 | static struct hid_sensor_hub_callbacks *sensor_hub_get_callback( |
| 112 | struct hid_device *hdev, |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 113 | u32 usage_id, |
| 114 | int collection_index, |
| 115 | struct hid_sensor_hub_device **hsdev, |
| 116 | void **priv) |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 117 | { |
| 118 | struct hid_sensor_hub_callbacks_list *callback; |
| 119 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); |
Srinivas Pandruvada | ed11977 | 2015-01-07 10:14:44 -0800 | [diff] [blame] | 120 | unsigned long flags; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 121 | |
Srinivas Pandruvada | ed11977 | 2015-01-07 10:14:44 -0800 | [diff] [blame] | 122 | spin_lock_irqsave(&pdata->dyn_callback_lock, flags); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 123 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) |
Srinivas Pandruvada | cb67126 | 2015-02-19 15:31:26 -0800 | [diff] [blame] | 124 | if ((callback->usage_id == usage_id || |
| 125 | callback->usage_id == HID_USAGE_SENSOR_COLLECTION) && |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 126 | (collection_index >= |
| 127 | callback->hsdev->start_collection_index) && |
| 128 | (collection_index < |
| 129 | callback->hsdev->end_collection_index)) { |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 130 | *priv = callback->priv; |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 131 | *hsdev = callback->hsdev; |
Srinivas Pandruvada | ed11977 | 2015-01-07 10:14:44 -0800 | [diff] [blame] | 132 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, |
| 133 | flags); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 134 | return callback->usage_callback; |
| 135 | } |
Srinivas Pandruvada | ed11977 | 2015-01-07 10:14:44 -0800 | [diff] [blame] | 136 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 137 | |
| 138 | return NULL; |
| 139 | } |
| 140 | |
| 141 | int sensor_hub_register_callback(struct hid_sensor_hub_device *hsdev, |
| 142 | u32 usage_id, |
| 143 | struct hid_sensor_hub_callbacks *usage_callback) |
| 144 | { |
| 145 | struct hid_sensor_hub_callbacks_list *callback; |
| 146 | struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev); |
Jiri Kosina | 0ccf091 | 2014-06-10 11:05:43 +0200 | [diff] [blame] | 147 | unsigned long flags; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 148 | |
Jiri Kosina | 0ccf091 | 2014-06-10 11:05:43 +0200 | [diff] [blame] | 149 | spin_lock_irqsave(&pdata->dyn_callback_lock, flags); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 150 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 151 | if (callback->usage_id == usage_id && |
| 152 | callback->hsdev == hsdev) { |
Jiri Kosina | 0ccf091 | 2014-06-10 11:05:43 +0200 | [diff] [blame] | 153 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 154 | return -EINVAL; |
| 155 | } |
Dan Carpenter | 2b7c4b8 | 2012-09-14 06:53:23 +0000 | [diff] [blame] | 156 | callback = kzalloc(sizeof(*callback), GFP_ATOMIC); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 157 | if (!callback) { |
Jiri Kosina | 0ccf091 | 2014-06-10 11:05:43 +0200 | [diff] [blame] | 158 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 159 | return -ENOMEM; |
| 160 | } |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 161 | callback->hsdev = hsdev; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 162 | callback->usage_callback = usage_callback; |
| 163 | callback->usage_id = usage_id; |
| 164 | callback->priv = NULL; |
Srinivas Pandruvada | cb67126 | 2015-02-19 15:31:26 -0800 | [diff] [blame] | 165 | /* |
| 166 | * If there is a handler registered for the collection type, then |
| 167 | * it will handle all reports for sensors in this collection. If |
| 168 | * there is also an individual sensor handler registration, then |
| 169 | * we want to make sure that the reports are directed to collection |
| 170 | * handler, as this may be a fusion sensor. So add collection handlers |
| 171 | * to the beginning of the list, so that they are matched first. |
| 172 | */ |
| 173 | if (usage_id == HID_USAGE_SENSOR_COLLECTION) |
| 174 | list_add(&callback->list, &pdata->dyn_callback_list); |
| 175 | else |
| 176 | list_add_tail(&callback->list, &pdata->dyn_callback_list); |
Jiri Kosina | 0ccf091 | 2014-06-10 11:05:43 +0200 | [diff] [blame] | 177 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 178 | |
| 179 | return 0; |
| 180 | } |
| 181 | EXPORT_SYMBOL_GPL(sensor_hub_register_callback); |
| 182 | |
| 183 | int sensor_hub_remove_callback(struct hid_sensor_hub_device *hsdev, |
| 184 | u32 usage_id) |
| 185 | { |
| 186 | struct hid_sensor_hub_callbacks_list *callback; |
| 187 | struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev); |
Jiri Kosina | 0ccf091 | 2014-06-10 11:05:43 +0200 | [diff] [blame] | 188 | unsigned long flags; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 189 | |
Jiri Kosina | 0ccf091 | 2014-06-10 11:05:43 +0200 | [diff] [blame] | 190 | spin_lock_irqsave(&pdata->dyn_callback_lock, flags); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 191 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 192 | if (callback->usage_id == usage_id && |
| 193 | callback->hsdev == hsdev) { |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 194 | list_del(&callback->list); |
| 195 | kfree(callback); |
| 196 | break; |
| 197 | } |
Jiri Kosina | 0ccf091 | 2014-06-10 11:05:43 +0200 | [diff] [blame] | 198 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 199 | |
| 200 | return 0; |
| 201 | } |
| 202 | EXPORT_SYMBOL_GPL(sensor_hub_remove_callback); |
| 203 | |
| 204 | int sensor_hub_set_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, |
Srinivas Pandruvada | 3950e03 | 2015-02-19 15:35:26 -0800 | [diff] [blame] | 205 | u32 field_index, int buffer_size, void *buffer) |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 206 | { |
| 207 | struct hid_report *report; |
Andy Shevchenko | 5902fde | 2013-08-14 11:07:09 +0300 | [diff] [blame] | 208 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
Srinivas Pandruvada | 3950e03 | 2015-02-19 15:35:26 -0800 | [diff] [blame] | 209 | __s32 *buf32 = buffer; |
| 210 | int i = 0; |
| 211 | int remaining_bytes; |
| 212 | __s32 value; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 213 | int ret = 0; |
| 214 | |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 215 | mutex_lock(&data->mutex); |
| 216 | report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); |
Andy Shevchenko | 5902fde | 2013-08-14 11:07:09 +0300 | [diff] [blame] | 217 | if (!report || (field_index >= report->maxfield)) { |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 218 | ret = -EINVAL; |
| 219 | goto done_proc; |
| 220 | } |
Srinivas Pandruvada | 3950e03 | 2015-02-19 15:35:26 -0800 | [diff] [blame] | 221 | |
Nicolas Pitre | 8d43b49 | 2015-11-03 17:01:46 -0500 | [diff] [blame] | 222 | remaining_bytes = buffer_size % sizeof(__s32); |
| 223 | buffer_size = buffer_size / sizeof(__s32); |
Srinivas Pandruvada | 3950e03 | 2015-02-19 15:35:26 -0800 | [diff] [blame] | 224 | if (buffer_size) { |
| 225 | for (i = 0; i < buffer_size; ++i) { |
| 226 | hid_set_field(report->field[field_index], i, |
Srinivas Pandruvada | 62fad13 | 2015-02-26 11:04:44 -0800 | [diff] [blame] | 227 | (__force __s32)cpu_to_le32(*buf32)); |
Srinivas Pandruvada | 3950e03 | 2015-02-19 15:35:26 -0800 | [diff] [blame] | 228 | ++buf32; |
| 229 | } |
| 230 | } |
| 231 | if (remaining_bytes) { |
| 232 | value = 0; |
| 233 | memcpy(&value, (u8 *)buf32, remaining_bytes); |
| 234 | hid_set_field(report->field[field_index], i, |
Srinivas Pandruvada | 62fad13 | 2015-02-26 11:04:44 -0800 | [diff] [blame] | 235 | (__force __s32)cpu_to_le32(value)); |
Srinivas Pandruvada | 3950e03 | 2015-02-19 15:35:26 -0800 | [diff] [blame] | 236 | } |
Benjamin Tissoires | d8814272 | 2013-02-25 11:31:46 +0100 | [diff] [blame] | 237 | hid_hw_request(hsdev->hdev, report, HID_REQ_SET_REPORT); |
Benjamin Tissoires | b7966a4 | 2013-02-25 11:31:47 +0100 | [diff] [blame] | 238 | hid_hw_wait(hsdev->hdev); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 239 | |
| 240 | done_proc: |
| 241 | mutex_unlock(&data->mutex); |
| 242 | |
| 243 | return ret; |
| 244 | } |
| 245 | EXPORT_SYMBOL_GPL(sensor_hub_set_feature); |
| 246 | |
| 247 | int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, |
Srinivas Pandruvada | 6adc83f | 2015-02-19 15:35:25 -0800 | [diff] [blame] | 248 | u32 field_index, int buffer_size, void *buffer) |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 249 | { |
| 250 | struct hid_report *report; |
Andy Shevchenko | 5902fde | 2013-08-14 11:07:09 +0300 | [diff] [blame] | 251 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
Srinivas Pandruvada | 6adc83f | 2015-02-19 15:35:25 -0800 | [diff] [blame] | 252 | int report_size; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 253 | int ret = 0; |
Srinivas Pandruvada | 5459ada | 2016-10-27 16:49:20 -0700 | [diff] [blame] | 254 | u8 *val_ptr; |
| 255 | int buffer_index = 0; |
| 256 | int i; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 257 | |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 258 | mutex_lock(&data->mutex); |
| 259 | report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); |
Jiri Kosina | 4e5a494 | 2013-09-06 11:59:53 +0200 | [diff] [blame] | 260 | if (!report || (field_index >= report->maxfield) || |
Kees Cook | 9e89102 | 2013-08-28 22:31:44 +0200 | [diff] [blame] | 261 | report->field[field_index]->report_count < 1) { |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 262 | ret = -EINVAL; |
| 263 | goto done_proc; |
| 264 | } |
Benjamin Tissoires | d8814272 | 2013-02-25 11:31:46 +0100 | [diff] [blame] | 265 | hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); |
Benjamin Tissoires | b7966a4 | 2013-02-25 11:31:47 +0100 | [diff] [blame] | 266 | hid_hw_wait(hsdev->hdev); |
Srinivas Pandruvada | 6adc83f | 2015-02-19 15:35:25 -0800 | [diff] [blame] | 267 | |
| 268 | /* calculate number of bytes required to read this field */ |
| 269 | report_size = DIV_ROUND_UP(report->field[field_index]->report_size, |
| 270 | 8) * |
| 271 | report->field[field_index]->report_count; |
| 272 | if (!report_size) { |
| 273 | ret = -EINVAL; |
| 274 | goto done_proc; |
| 275 | } |
| 276 | ret = min(report_size, buffer_size); |
Srinivas Pandruvada | 5459ada | 2016-10-27 16:49:20 -0700 | [diff] [blame] | 277 | |
| 278 | val_ptr = (u8 *)report->field[field_index]->value; |
| 279 | for (i = 0; i < report->field[field_index]->report_count; ++i) { |
| 280 | if (buffer_index >= ret) |
| 281 | break; |
| 282 | |
| 283 | memcpy(&((u8 *)buffer)[buffer_index], val_ptr, |
| 284 | report->field[field_index]->report_size / 8); |
| 285 | val_ptr += sizeof(__s32); |
| 286 | buffer_index += (report->field[field_index]->report_size / 8); |
| 287 | } |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 288 | |
| 289 | done_proc: |
| 290 | mutex_unlock(&data->mutex); |
| 291 | |
| 292 | return ret; |
| 293 | } |
| 294 | EXPORT_SYMBOL_GPL(sensor_hub_get_feature); |
| 295 | |
| 296 | |
| 297 | int sensor_hub_input_attr_get_raw_value(struct hid_sensor_hub_device *hsdev, |
| 298 | u32 usage_id, |
Srinivas Pandruvada | b3f4737 | 2015-02-19 15:33:56 -0800 | [diff] [blame] | 299 | u32 attr_usage_id, u32 report_id, |
| 300 | enum sensor_hub_read_flags flag) |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 301 | { |
Andy Shevchenko | 5902fde | 2013-08-14 11:07:09 +0300 | [diff] [blame] | 302 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 303 | unsigned long flags; |
| 304 | struct hid_report *report; |
| 305 | int ret_val = 0; |
| 306 | |
Srinivas Pandruvada | b3f4737 | 2015-02-19 15:33:56 -0800 | [diff] [blame] | 307 | report = sensor_hub_report(report_id, hsdev->hdev, |
| 308 | HID_INPUT_REPORT); |
Srinivas Pandruvada | f74346a | 2014-03-24 16:25:04 -0700 | [diff] [blame] | 309 | if (!report) |
Srinivas Pandruvada | b3f4737 | 2015-02-19 15:33:56 -0800 | [diff] [blame] | 310 | return -EINVAL; |
Srinivas Pandruvada | f74346a | 2014-03-24 16:25:04 -0700 | [diff] [blame] | 311 | |
Srinivas Pandruvada | 2d94e52 | 2015-05-07 14:26:34 -0700 | [diff] [blame] | 312 | mutex_lock(hsdev->mutex_ptr); |
Srinivas Pandruvada | b3f4737 | 2015-02-19 15:33:56 -0800 | [diff] [blame] | 313 | if (flag == SENSOR_HUB_SYNC) { |
| 314 | memset(&hsdev->pending, 0, sizeof(hsdev->pending)); |
| 315 | init_completion(&hsdev->pending.ready); |
| 316 | hsdev->pending.usage_id = usage_id; |
| 317 | hsdev->pending.attr_usage_id = attr_usage_id; |
| 318 | hsdev->pending.raw_size = 0; |
| 319 | |
| 320 | spin_lock_irqsave(&data->lock, flags); |
| 321 | hsdev->pending.status = true; |
| 322 | spin_unlock_irqrestore(&data->lock, flags); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 323 | } |
Srinivas Pandruvada | e651a1d | 2015-02-19 15:31:25 -0800 | [diff] [blame] | 324 | mutex_lock(&data->mutex); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 325 | hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 326 | mutex_unlock(&data->mutex); |
Srinivas Pandruvada | b3f4737 | 2015-02-19 15:33:56 -0800 | [diff] [blame] | 327 | if (flag == SENSOR_HUB_SYNC) { |
| 328 | wait_for_completion_interruptible_timeout( |
| 329 | &hsdev->pending.ready, HZ*5); |
| 330 | switch (hsdev->pending.raw_size) { |
| 331 | case 1: |
| 332 | ret_val = *(u8 *)hsdev->pending.raw_data; |
| 333 | break; |
| 334 | case 2: |
| 335 | ret_val = *(u16 *)hsdev->pending.raw_data; |
| 336 | break; |
| 337 | case 4: |
| 338 | ret_val = *(u32 *)hsdev->pending.raw_data; |
| 339 | break; |
| 340 | default: |
| 341 | ret_val = 0; |
| 342 | } |
| 343 | kfree(hsdev->pending.raw_data); |
| 344 | hsdev->pending.status = false; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 345 | } |
Srinivas Pandruvada | 2d94e52 | 2015-05-07 14:26:34 -0700 | [diff] [blame] | 346 | mutex_unlock(hsdev->mutex_ptr); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 347 | |
| 348 | return ret_val; |
| 349 | } |
| 350 | EXPORT_SYMBOL_GPL(sensor_hub_input_attr_get_raw_value); |
| 351 | |
Srinivas Pandruvada | e02cee4 | 2014-01-23 18:50:21 -0800 | [diff] [blame] | 352 | int hid_sensor_get_usage_index(struct hid_sensor_hub_device *hsdev, |
| 353 | u32 report_id, int field_index, u32 usage_id) |
| 354 | { |
| 355 | struct hid_report *report; |
| 356 | struct hid_field *field; |
| 357 | int i; |
| 358 | |
| 359 | report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); |
| 360 | if (!report || (field_index >= report->maxfield)) |
| 361 | goto done_proc; |
| 362 | |
| 363 | field = report->field[field_index]; |
| 364 | for (i = 0; i < field->maxusage; ++i) { |
| 365 | if (field->usage[i].hid == usage_id) |
| 366 | return field->usage[i].usage_index; |
| 367 | } |
| 368 | |
| 369 | done_proc: |
| 370 | return -EINVAL; |
| 371 | } |
| 372 | EXPORT_SYMBOL_GPL(hid_sensor_get_usage_index); |
| 373 | |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 374 | int sensor_hub_input_get_attribute_info(struct hid_sensor_hub_device *hsdev, |
| 375 | u8 type, |
| 376 | u32 usage_id, |
| 377 | u32 attr_usage_id, |
| 378 | struct hid_sensor_hub_attribute_info *info) |
| 379 | { |
| 380 | int ret = -1; |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 381 | int i; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 382 | struct hid_report *report; |
| 383 | struct hid_field *field; |
| 384 | struct hid_report_enum *report_enum; |
| 385 | struct hid_device *hdev = hsdev->hdev; |
| 386 | |
| 387 | /* Initialize with defaults */ |
| 388 | info->usage_id = usage_id; |
Andy Shevchenko | 5902fde | 2013-08-14 11:07:09 +0300 | [diff] [blame] | 389 | info->attrib_id = attr_usage_id; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 390 | info->report_id = -1; |
| 391 | info->index = -1; |
| 392 | info->units = -1; |
| 393 | info->unit_expo = -1; |
| 394 | |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 395 | report_enum = &hdev->report_enum[type]; |
| 396 | list_for_each_entry(report, &report_enum->report_list, list) { |
| 397 | for (i = 0; i < report->maxfield; ++i) { |
| 398 | field = report->field[i]; |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 399 | if (field->maxusage) { |
| 400 | if (field->physical == usage_id && |
| 401 | (field->logical == attr_usage_id || |
| 402 | field->usage[0].hid == |
| 403 | attr_usage_id) && |
| 404 | (field->usage[0].collection_index >= |
| 405 | hsdev->start_collection_index) && |
| 406 | (field->usage[0].collection_index < |
| 407 | hsdev->end_collection_index)) { |
| 408 | |
| 409 | sensor_hub_fill_attr_info(info, i, |
| 410 | report->id, |
| 411 | field); |
| 412 | ret = 0; |
| 413 | break; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 414 | } |
| 415 | } |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 416 | } |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 417 | |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 418 | } |
| 419 | |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 420 | return ret; |
| 421 | } |
| 422 | EXPORT_SYMBOL_GPL(sensor_hub_input_get_attribute_info); |
| 423 | |
| 424 | #ifdef CONFIG_PM |
| 425 | static int sensor_hub_suspend(struct hid_device *hdev, pm_message_t message) |
| 426 | { |
Andy Shevchenko | 5902fde | 2013-08-14 11:07:09 +0300 | [diff] [blame] | 427 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 428 | struct hid_sensor_hub_callbacks_list *callback; |
Jiri Kosina | 0ccf091 | 2014-06-10 11:05:43 +0200 | [diff] [blame] | 429 | unsigned long flags; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 430 | |
| 431 | hid_dbg(hdev, " sensor_hub_suspend\n"); |
Jiri Kosina | 0ccf091 | 2014-06-10 11:05:43 +0200 | [diff] [blame] | 432 | spin_lock_irqsave(&pdata->dyn_callback_lock, flags); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 433 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) { |
| 434 | if (callback->usage_callback->suspend) |
| 435 | callback->usage_callback->suspend( |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 436 | callback->hsdev, callback->priv); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 437 | } |
Jiri Kosina | 0ccf091 | 2014-06-10 11:05:43 +0200 | [diff] [blame] | 438 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 439 | |
| 440 | return 0; |
| 441 | } |
| 442 | |
| 443 | static int sensor_hub_resume(struct hid_device *hdev) |
| 444 | { |
Andy Shevchenko | 5902fde | 2013-08-14 11:07:09 +0300 | [diff] [blame] | 445 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 446 | struct hid_sensor_hub_callbacks_list *callback; |
Jiri Kosina | 0ccf091 | 2014-06-10 11:05:43 +0200 | [diff] [blame] | 447 | unsigned long flags; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 448 | |
| 449 | hid_dbg(hdev, " sensor_hub_resume\n"); |
Jiri Kosina | 0ccf091 | 2014-06-10 11:05:43 +0200 | [diff] [blame] | 450 | spin_lock_irqsave(&pdata->dyn_callback_lock, flags); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 451 | list_for_each_entry(callback, &pdata->dyn_callback_list, list) { |
| 452 | if (callback->usage_callback->resume) |
| 453 | callback->usage_callback->resume( |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 454 | callback->hsdev, callback->priv); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 455 | } |
Jiri Kosina | 0ccf091 | 2014-06-10 11:05:43 +0200 | [diff] [blame] | 456 | spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 457 | |
| 458 | return 0; |
| 459 | } |
| 460 | |
| 461 | static int sensor_hub_reset_resume(struct hid_device *hdev) |
| 462 | { |
| 463 | return 0; |
| 464 | } |
| 465 | #endif |
Andy Shevchenko | 5902fde | 2013-08-14 11:07:09 +0300 | [diff] [blame] | 466 | |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 467 | /* |
| 468 | * Handle raw report as sent by device |
| 469 | */ |
| 470 | static int sensor_hub_raw_event(struct hid_device *hdev, |
| 471 | struct hid_report *report, u8 *raw_data, int size) |
| 472 | { |
| 473 | int i; |
| 474 | u8 *ptr; |
| 475 | int sz; |
| 476 | struct sensor_hub_data *pdata = hid_get_drvdata(hdev); |
| 477 | unsigned long flags; |
| 478 | struct hid_sensor_hub_callbacks *callback = NULL; |
| 479 | struct hid_collection *collection = NULL; |
| 480 | void *priv = NULL; |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 481 | struct hid_sensor_hub_device *hsdev = NULL; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 482 | |
| 483 | hid_dbg(hdev, "sensor_hub_raw_event report id:0x%x size:%d type:%d\n", |
| 484 | report->id, size, report->type); |
| 485 | hid_dbg(hdev, "maxfield:%d\n", report->maxfield); |
| 486 | if (report->type != HID_INPUT_REPORT) |
| 487 | return 1; |
| 488 | |
| 489 | ptr = raw_data; |
Andy Shevchenko | 15261f6 | 2013-08-14 11:07:08 +0300 | [diff] [blame] | 490 | ptr++; /* Skip report id */ |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 491 | |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 492 | spin_lock_irqsave(&pdata->lock, flags); |
| 493 | |
| 494 | for (i = 0; i < report->maxfield; ++i) { |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 495 | hid_dbg(hdev, "%d collection_index:%x hid:%x sz:%x\n", |
| 496 | i, report->field[i]->usage->collection_index, |
| 497 | report->field[i]->usage->hid, |
Srinivas Pandruvada | d4b1bba | 2013-10-26 10:04:09 -0700 | [diff] [blame] | 498 | (report->field[i]->report_size * |
| 499 | report->field[i]->report_count)/8); |
| 500 | sz = (report->field[i]->report_size * |
| 501 | report->field[i]->report_count)/8; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 502 | collection = &hdev->collection[ |
| 503 | report->field[i]->usage->collection_index]; |
| 504 | hid_dbg(hdev, "collection->usage %x\n", |
| 505 | collection->usage); |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 506 | |
| 507 | callback = sensor_hub_get_callback(hdev, |
| 508 | report->field[i]->physical, |
| 509 | report->field[i]->usage[0].collection_index, |
| 510 | &hsdev, &priv); |
Srinivas Pandruvada | e651a1d | 2015-02-19 15:31:25 -0800 | [diff] [blame] | 511 | if (!callback) { |
| 512 | ptr += sz; |
| 513 | continue; |
| 514 | } |
Srinivas Pandruvada | eb96483 | 2015-02-25 18:56:27 -0800 | [diff] [blame] | 515 | if (hsdev->pending.status && (hsdev->pending.attr_usage_id == |
| 516 | report->field[i]->usage->hid || |
| 517 | hsdev->pending.attr_usage_id == |
| 518 | report->field[i]->logical)) { |
Srinivas Pandruvada | e651a1d | 2015-02-19 15:31:25 -0800 | [diff] [blame] | 519 | hid_dbg(hdev, "data was pending ...\n"); |
| 520 | hsdev->pending.raw_data = kmemdup(ptr, sz, GFP_ATOMIC); |
| 521 | if (hsdev->pending.raw_data) |
| 522 | hsdev->pending.raw_size = sz; |
| 523 | else |
| 524 | hsdev->pending.raw_size = 0; |
| 525 | complete(&hsdev->pending.ready); |
| 526 | } |
| 527 | if (callback->capture_sample) { |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 528 | if (report->field[i]->logical) |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 529 | callback->capture_sample(hsdev, |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 530 | report->field[i]->logical, sz, ptr, |
| 531 | callback->pdev); |
| 532 | else |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 533 | callback->capture_sample(hsdev, |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 534 | report->field[i]->usage->hid, sz, ptr, |
| 535 | callback->pdev); |
| 536 | } |
| 537 | ptr += sz; |
| 538 | } |
| 539 | if (callback && collection && callback->send_event) |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 540 | callback->send_event(hsdev, collection->usage, |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 541 | callback->pdev); |
| 542 | spin_unlock_irqrestore(&pdata->lock, flags); |
| 543 | |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 544 | return 1; |
| 545 | } |
| 546 | |
Srinivas Pandruvada | 1df3a40 | 2013-09-18 18:13:00 +0100 | [diff] [blame] | 547 | int sensor_hub_device_open(struct hid_sensor_hub_device *hsdev) |
| 548 | { |
| 549 | int ret = 0; |
| 550 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
| 551 | |
| 552 | mutex_lock(&data->mutex); |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 553 | if (!data->ref_cnt) { |
Srinivas Pandruvada | 1df3a40 | 2013-09-18 18:13:00 +0100 | [diff] [blame] | 554 | ret = hid_hw_open(hsdev->hdev); |
| 555 | if (ret) { |
| 556 | hid_err(hsdev->hdev, "failed to open hid device\n"); |
| 557 | mutex_unlock(&data->mutex); |
| 558 | return ret; |
| 559 | } |
| 560 | } |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 561 | data->ref_cnt++; |
Srinivas Pandruvada | 1df3a40 | 2013-09-18 18:13:00 +0100 | [diff] [blame] | 562 | mutex_unlock(&data->mutex); |
| 563 | |
| 564 | return ret; |
| 565 | } |
| 566 | EXPORT_SYMBOL_GPL(sensor_hub_device_open); |
| 567 | |
| 568 | void sensor_hub_device_close(struct hid_sensor_hub_device *hsdev) |
| 569 | { |
| 570 | struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); |
| 571 | |
| 572 | mutex_lock(&data->mutex); |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 573 | data->ref_cnt--; |
| 574 | if (!data->ref_cnt) |
Srinivas Pandruvada | 1df3a40 | 2013-09-18 18:13:00 +0100 | [diff] [blame] | 575 | hid_hw_close(hsdev->hdev); |
| 576 | mutex_unlock(&data->mutex); |
| 577 | } |
| 578 | EXPORT_SYMBOL_GPL(sensor_hub_device_close); |
| 579 | |
Srinivas Pandruvada | 875e36f | 2014-01-14 09:30:20 -0800 | [diff] [blame] | 580 | static __u8 *sensor_hub_report_fixup(struct hid_device *hdev, __u8 *rdesc, |
| 581 | unsigned int *rsize) |
| 582 | { |
| 583 | int index; |
| 584 | struct sensor_hub_data *sd = hid_get_drvdata(hdev); |
| 585 | unsigned char report_block[] = { |
| 586 | 0x0a, 0x16, 0x03, 0x15, 0x00, 0x25, 0x05}; |
| 587 | unsigned char power_block[] = { |
| 588 | 0x0a, 0x19, 0x03, 0x15, 0x00, 0x25, 0x05}; |
| 589 | |
| 590 | if (!(sd->quirks & HID_SENSOR_HUB_ENUM_QUIRK)) { |
| 591 | hid_dbg(hdev, "No Enum quirks\n"); |
| 592 | return rdesc; |
| 593 | } |
| 594 | |
| 595 | /* Looks for power and report state usage id and force to 1 */ |
| 596 | for (index = 0; index < *rsize; ++index) { |
| 597 | if (((*rsize - index) > sizeof(report_block)) && |
| 598 | !memcmp(&rdesc[index], report_block, |
| 599 | sizeof(report_block))) { |
| 600 | rdesc[index + 4] = 0x01; |
| 601 | index += sizeof(report_block); |
| 602 | } |
| 603 | if (((*rsize - index) > sizeof(power_block)) && |
| 604 | !memcmp(&rdesc[index], power_block, |
| 605 | sizeof(power_block))) { |
| 606 | rdesc[index + 4] = 0x01; |
| 607 | index += sizeof(power_block); |
| 608 | } |
| 609 | } |
| 610 | |
Fernando D S Lima | 9fe8ecc | 2015-09-03 12:56:31 -0300 | [diff] [blame] | 611 | /* Checks if the report descriptor of Thinkpad Helix 2 has a logical |
| 612 | * minimum for magnetic flux axis greater than the maximum */ |
| 613 | if (hdev->product == USB_DEVICE_ID_TEXAS_INSTRUMENTS_LENOVO_YOGA && |
| 614 | *rsize == 2558 && rdesc[913] == 0x17 && rdesc[914] == 0x40 && |
| 615 | rdesc[915] == 0x81 && rdesc[916] == 0x08 && |
| 616 | rdesc[917] == 0x00 && rdesc[918] == 0x27 && |
| 617 | rdesc[921] == 0x07 && rdesc[922] == 0x00) { |
| 618 | /* Sets negative logical minimum for mag x, y and z */ |
| 619 | rdesc[914] = rdesc[935] = rdesc[956] = 0xc0; |
| 620 | rdesc[915] = rdesc[936] = rdesc[957] = 0x7e; |
| 621 | rdesc[916] = rdesc[937] = rdesc[958] = 0xf7; |
| 622 | rdesc[917] = rdesc[938] = rdesc[959] = 0xff; |
| 623 | } |
| 624 | |
Srinivas Pandruvada | 875e36f | 2014-01-14 09:30:20 -0800 | [diff] [blame] | 625 | return rdesc; |
| 626 | } |
| 627 | |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 628 | static int sensor_hub_probe(struct hid_device *hdev, |
| 629 | const struct hid_device_id *id) |
| 630 | { |
| 631 | int ret; |
| 632 | struct sensor_hub_data *sd; |
| 633 | int i; |
| 634 | char *name; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 635 | int dev_cnt; |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 636 | struct hid_sensor_hub_device *hsdev; |
| 637 | struct hid_sensor_hub_device *last_hsdev = NULL; |
Srinivas Pandruvada | cb67126 | 2015-02-19 15:31:26 -0800 | [diff] [blame] | 638 | struct hid_sensor_hub_device *collection_hsdev = NULL; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 639 | |
Andy Shevchenko | 905cc19 | 2013-08-14 11:07:10 +0300 | [diff] [blame] | 640 | sd = devm_kzalloc(&hdev->dev, sizeof(*sd), GFP_KERNEL); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 641 | if (!sd) { |
| 642 | hid_err(hdev, "cannot allocate Sensor data\n"); |
| 643 | return -ENOMEM; |
| 644 | } |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 645 | |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 646 | hid_set_drvdata(hdev, sd); |
Srinivas Pandruvada | 875e36f | 2014-01-14 09:30:20 -0800 | [diff] [blame] | 647 | sd->quirks = id->driver_data; |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 648 | |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 649 | spin_lock_init(&sd->lock); |
| 650 | spin_lock_init(&sd->dyn_callback_lock); |
| 651 | mutex_init(&sd->mutex); |
| 652 | ret = hid_parse(hdev); |
| 653 | if (ret) { |
| 654 | hid_err(hdev, "parse failed\n"); |
Andy Shevchenko | 905cc19 | 2013-08-14 11:07:10 +0300 | [diff] [blame] | 655 | return ret; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 656 | } |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 657 | INIT_LIST_HEAD(&hdev->inputs); |
| 658 | |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 659 | ret = hid_hw_start(hdev, 0); |
| 660 | if (ret) { |
| 661 | hid_err(hdev, "hw start failed\n"); |
Andy Shevchenko | 905cc19 | 2013-08-14 11:07:10 +0300 | [diff] [blame] | 662 | return ret; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 663 | } |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 664 | INIT_LIST_HEAD(&sd->dyn_callback_list); |
| 665 | sd->hid_sensor_client_cnt = 0; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 666 | |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 667 | dev_cnt = sensor_hub_get_physical_device_count(hdev); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 668 | if (dev_cnt > HID_MAX_PHY_DEVICES) { |
| 669 | hid_err(hdev, "Invalid Physical device count\n"); |
| 670 | ret = -EINVAL; |
Srinivas Pandruvada | 1df3a40 | 2013-09-18 18:13:00 +0100 | [diff] [blame] | 671 | goto err_stop_hw; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 672 | } |
Himangi Saraogi | 5be5db2 | 2014-08-03 03:41:35 +0530 | [diff] [blame] | 673 | sd->hid_sensor_hub_client_devs = devm_kzalloc(&hdev->dev, dev_cnt * |
| 674 | sizeof(struct mfd_cell), |
| 675 | GFP_KERNEL); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 676 | if (sd->hid_sensor_hub_client_devs == NULL) { |
Axel Lin | f2f13a6 | 2012-09-19 16:30:00 +0100 | [diff] [blame] | 677 | hid_err(hdev, "Failed to allocate memory for mfd cells\n"); |
Jiri Slaby | 636a89d | 2015-10-11 16:18:22 +0200 | [diff] [blame] | 678 | ret = -ENOMEM; |
| 679 | goto err_stop_hw; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 680 | } |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 681 | |
| 682 | for (i = 0; i < hdev->maxcollection; ++i) { |
| 683 | struct hid_collection *collection = &hdev->collection[i]; |
| 684 | |
Srinivas Pandruvada | cb67126 | 2015-02-19 15:31:26 -0800 | [diff] [blame] | 685 | if (collection->type == HID_COLLECTION_PHYSICAL || |
| 686 | collection->type == HID_COLLECTION_APPLICATION) { |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 687 | |
Himangi Saraogi | 5be5db2 | 2014-08-03 03:41:35 +0530 | [diff] [blame] | 688 | hsdev = devm_kzalloc(&hdev->dev, sizeof(*hsdev), |
| 689 | GFP_KERNEL); |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 690 | if (!hsdev) { |
| 691 | hid_err(hdev, "cannot allocate hid_sensor_hub_device\n"); |
| 692 | ret = -ENOMEM; |
Himangi Saraogi | 5be5db2 | 2014-08-03 03:41:35 +0530 | [diff] [blame] | 693 | goto err_stop_hw; |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 694 | } |
| 695 | hsdev->hdev = hdev; |
| 696 | hsdev->vendor_id = hdev->vendor; |
| 697 | hsdev->product_id = hdev->product; |
Srinivas Pandruvada | e651a1d | 2015-02-19 15:31:25 -0800 | [diff] [blame] | 698 | hsdev->usage = collection->usage; |
Srinivas Pandruvada | 2d94e52 | 2015-05-07 14:26:34 -0700 | [diff] [blame] | 699 | hsdev->mutex_ptr = devm_kzalloc(&hdev->dev, |
| 700 | sizeof(struct mutex), |
| 701 | GFP_KERNEL); |
| 702 | if (!hsdev->mutex_ptr) { |
| 703 | ret = -ENOMEM; |
| 704 | goto err_stop_hw; |
| 705 | } |
| 706 | mutex_init(hsdev->mutex_ptr); |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 707 | hsdev->start_collection_index = i; |
| 708 | if (last_hsdev) |
| 709 | last_hsdev->end_collection_index = i; |
| 710 | last_hsdev = hsdev; |
Himangi Saraogi | 5be5db2 | 2014-08-03 03:41:35 +0530 | [diff] [blame] | 711 | name = devm_kasprintf(&hdev->dev, GFP_KERNEL, |
| 712 | "HID-SENSOR-%x", |
| 713 | collection->usage); |
Andy Shevchenko | 5902fde | 2013-08-14 11:07:09 +0300 | [diff] [blame] | 714 | if (name == NULL) { |
Axel Lin | f2f13a6 | 2012-09-19 16:30:00 +0100 | [diff] [blame] | 715 | hid_err(hdev, "Failed MFD device name\n"); |
Jiri Slaby | 636a89d | 2015-10-11 16:18:22 +0200 | [diff] [blame] | 716 | ret = -ENOMEM; |
| 717 | goto err_stop_hw; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 718 | } |
| 719 | sd->hid_sensor_hub_client_devs[ |
| 720 | sd->hid_sensor_client_cnt].name = name; |
| 721 | sd->hid_sensor_hub_client_devs[ |
| 722 | sd->hid_sensor_client_cnt].platform_data = |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 723 | hsdev; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 724 | sd->hid_sensor_hub_client_devs[ |
| 725 | sd->hid_sensor_client_cnt].pdata_size = |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 726 | sizeof(*hsdev); |
| 727 | hid_dbg(hdev, "Adding %s:%d\n", name, |
| 728 | hsdev->start_collection_index); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 729 | sd->hid_sensor_client_cnt++; |
Srinivas Pandruvada | cb67126 | 2015-02-19 15:31:26 -0800 | [diff] [blame] | 730 | if (collection_hsdev) |
| 731 | collection_hsdev->end_collection_index = i; |
| 732 | if (collection->type == HID_COLLECTION_APPLICATION && |
| 733 | collection->usage == HID_USAGE_SENSOR_COLLECTION) |
| 734 | collection_hsdev = hsdev; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 735 | } |
| 736 | } |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 737 | if (last_hsdev) |
| 738 | last_hsdev->end_collection_index = i; |
Srinivas Pandruvada | cb67126 | 2015-02-19 15:31:26 -0800 | [diff] [blame] | 739 | if (collection_hsdev) |
| 740 | collection_hsdev->end_collection_index = i; |
Srinivas Pandruvada | ca2ed12 | 2014-01-31 12:04:10 -0800 | [diff] [blame] | 741 | |
Johan Hovold | 16b5fe2 | 2014-09-26 12:55:32 +0200 | [diff] [blame] | 742 | ret = mfd_add_hotplug_devices(&hdev->dev, |
| 743 | sd->hid_sensor_hub_client_devs, |
| 744 | sd->hid_sensor_client_cnt); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 745 | if (ret < 0) |
Himangi Saraogi | 5be5db2 | 2014-08-03 03:41:35 +0530 | [diff] [blame] | 746 | goto err_stop_hw; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 747 | |
| 748 | return ret; |
| 749 | |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 750 | err_stop_hw: |
| 751 | hid_hw_stop(hdev); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 752 | |
| 753 | return ret; |
| 754 | } |
| 755 | |
| 756 | static void sensor_hub_remove(struct hid_device *hdev) |
| 757 | { |
| 758 | struct sensor_hub_data *data = hid_get_drvdata(hdev); |
| 759 | unsigned long flags; |
Srinivas Pandruvada | e651a1d | 2015-02-19 15:31:25 -0800 | [diff] [blame] | 760 | int i; |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 761 | |
| 762 | hid_dbg(hdev, " hardware removed\n"); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 763 | hid_hw_close(hdev); |
Axel Lin | f2f13a6 | 2012-09-19 16:30:00 +0100 | [diff] [blame] | 764 | hid_hw_stop(hdev); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 765 | spin_lock_irqsave(&data->lock, flags); |
Srinivas Pandruvada | e651a1d | 2015-02-19 15:31:25 -0800 | [diff] [blame] | 766 | for (i = 0; i < data->hid_sensor_client_cnt; ++i) { |
| 767 | struct hid_sensor_hub_device *hsdev = |
| 768 | data->hid_sensor_hub_client_devs[i].platform_data; |
| 769 | if (hsdev->pending.status) |
| 770 | complete(&hsdev->pending.ready); |
| 771 | } |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 772 | spin_unlock_irqrestore(&data->lock, flags); |
| 773 | mfd_remove_devices(&hdev->dev); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 774 | hid_set_drvdata(hdev, NULL); |
| 775 | mutex_destroy(&data->mutex); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 776 | } |
| 777 | |
| 778 | static const struct hid_device_id sensor_hub_devices[] = { |
Srinivas Pandruvada | 875e36f | 2014-01-14 09:30:20 -0800 | [diff] [blame] | 779 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_0, |
Stephen Chandler Paul | 30f5887 | 2014-04-03 16:27:55 -0400 | [diff] [blame] | 780 | USB_DEVICE_ID_INTEL_HID_SENSOR_0), |
Srinivas Pandruvada | 875e36f | 2014-01-14 09:30:20 -0800 | [diff] [blame] | 781 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, |
| 782 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_1, |
Stephen Chandler Paul | 30f5887 | 2014-04-03 16:27:55 -0400 | [diff] [blame] | 783 | USB_DEVICE_ID_INTEL_HID_SENSOR_0), |
| 784 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, |
| 785 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_1, |
| 786 | USB_DEVICE_ID_INTEL_HID_SENSOR_1), |
Srinivas Pandruvada | 875e36f | 2014-01-14 09:30:20 -0800 | [diff] [blame] | 787 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, |
Reyad Attiyat | 00478ee | 2014-05-27 02:29:10 -0500 | [diff] [blame] | 788 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT, |
| 789 | USB_DEVICE_ID_MS_SURFACE_PRO_2), |
| 790 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, |
| 791 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT, |
| 792 | USB_DEVICE_ID_MS_TOUCH_COVER_2), |
| 793 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, |
| 794 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT, |
| 795 | USB_DEVICE_ID_MS_TYPE_COVER_2), |
| 796 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, |
Archana Patni | 218eb9e | 2014-02-03 12:44:16 +0530 | [diff] [blame] | 797 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_STM_0, |
Srinivas Pandruvada | 467669c | 2014-09-03 16:00:54 -0700 | [diff] [blame] | 798 | USB_DEVICE_ID_STM_HID_SENSOR), |
| 799 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, |
| 800 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_STM_0, |
Archana Patni | dde3b45 | 2014-06-02 07:40:49 -0400 | [diff] [blame] | 801 | USB_DEVICE_ID_STM_HID_SENSOR_1), |
Archana Patni | 218eb9e | 2014-02-03 12:44:16 +0530 | [diff] [blame] | 802 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, |
Peter F. Patel-Schneider | 825747b | 2014-05-05 15:55:32 -0700 | [diff] [blame] | 803 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_TEXAS_INSTRUMENTS, |
| 804 | USB_DEVICE_ID_TEXAS_INSTRUMENTS_LENOVO_YOGA), |
| 805 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, |
Guilhem Lettron | 21589eb | 2015-06-27 17:02:23 +0200 | [diff] [blame] | 806 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_ITE, |
| 807 | USB_DEVICE_ID_ITE_LENOVO_YOGA), |
| 808 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, |
Ritesh Raj Sarraf | e8e8843 | 2015-10-05 22:02:18 +0530 | [diff] [blame] | 809 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_ITE, |
| 810 | USB_DEVICE_ID_ITE_LENOVO_YOGA2), |
| 811 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, |
Srinivas Pandruvada | 7683355 | 2015-12-28 07:01:31 -0800 | [diff] [blame] | 812 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_ITE, |
| 813 | USB_DEVICE_ID_ITE_LENOVO_YOGA900), |
| 814 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, |
Srinivas Pandruvada | 930fafd | 2016-08-07 02:25:38 -0700 | [diff] [blame] | 815 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_0, |
| 816 | 0x22D8), |
| 817 | .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, |
Mika Westerberg | 0d1e4b0 | 2013-02-11 12:31:19 +0200 | [diff] [blame] | 818 | { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, HID_ANY_ID, |
| 819 | HID_ANY_ID) }, |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 820 | { } |
| 821 | }; |
| 822 | MODULE_DEVICE_TABLE(hid, sensor_hub_devices); |
| 823 | |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 824 | static struct hid_driver sensor_hub_driver = { |
| 825 | .name = "hid-sensor-hub", |
| 826 | .id_table = sensor_hub_devices, |
| 827 | .probe = sensor_hub_probe, |
| 828 | .remove = sensor_hub_remove, |
| 829 | .raw_event = sensor_hub_raw_event, |
Srinivas Pandruvada | 875e36f | 2014-01-14 09:30:20 -0800 | [diff] [blame] | 830 | .report_fixup = sensor_hub_report_fixup, |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 831 | #ifdef CONFIG_PM |
| 832 | .suspend = sensor_hub_suspend, |
Andy Shevchenko | 5902fde | 2013-08-14 11:07:09 +0300 | [diff] [blame] | 833 | .resume = sensor_hub_resume, |
| 834 | .reset_resume = sensor_hub_reset_resume, |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 835 | #endif |
| 836 | }; |
H Hartley Sweeten | f425458 | 2012-12-17 15:28:26 -0700 | [diff] [blame] | 837 | module_hid_driver(sensor_hub_driver); |
srinivas pandruvada | 401ca24 | 2012-09-05 13:56:00 +0100 | [diff] [blame] | 838 | |
| 839 | MODULE_DESCRIPTION("HID Sensor Hub driver"); |
| 840 | MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>"); |
| 841 | MODULE_LICENSE("GPL"); |