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Code Issues Releases Wiki Activity

HID: nvidia-shield: Add mappings for consumer HID USAGE buttons

Browse source 
Map Android Home, Back, Search, VolumeUp, VolumeDown, and PlayPause buttons
to the appropriate input event codes.

Signed-off-by: Rahul Rameshbabu <rrameshbabu@nvidia.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Rahul Rameshbabu 2023-05-29 15:20:50 -07:00 committed by Jiri Kosina
parent 09308562d4
commit 13d02c69e4
1 changed files with 50 additions and 5 deletions
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55
drivers/hid/hid-nvidia-shield.c
View file

@ -15,6 +15,16 @@
#include "hid-ids.h"
#define NOT_INIT_STR "NOT INITIALIZED"
#define android_map_key(c) hid_map_usage(hi, usage, bit, max, EV_KEY, (c))
enum {
HID_USAGE_ANDROID_PLAYPAUSE_BTN = 0xcd, /* Double-tap volume slider */
HID_USAGE_ANDROID_VOLUMEUP_BTN = 0xe9,
HID_USAGE_ANDROID_VOLUMEDOWN_BTN = 0xea,
HID_USAGE_ANDROID_SEARCH_BTN = 0x221, /* NVIDIA btn on Thunderstrike */
HID_USAGE_ANDROID_HOME_BTN = 0x223,
HID_USAGE_ANDROID_BACK_BTN = 0x224,
};
enum {
SHIELD_FW_VERSION_INITIALIZED = 0,
@ -416,6 +426,40 @@ static struct shield_device *thunderstrike_create(struct hid_device *hdev)
return shield_dev;
}
static int android_input_mapping(struct hid_device *hdev, struct hid_input *hi,
struct hid_field *field,
struct hid_usage *usage, unsigned long **bit,
int *max)
{
if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER)
return 0;
switch (usage->hid & HID_USAGE) {
case HID_USAGE_ANDROID_PLAYPAUSE_BTN:
android_map_key(KEY_PLAYPAUSE);
break;
case HID_USAGE_ANDROID_VOLUMEUP_BTN:
android_map_key(KEY_VOLUMEUP);
break;
case HID_USAGE_ANDROID_VOLUMEDOWN_BTN:
android_map_key(KEY_VOLUMEDOWN);
break;
case HID_USAGE_ANDROID_SEARCH_BTN:
android_map_key(BTN_Z);
break;
case HID_USAGE_ANDROID_HOME_BTN:
android_map_key(BTN_MODE);
break;
case HID_USAGE_ANDROID_BACK_BTN:
android_map_key(BTN_SELECT);
break;
default:
return 0;
}
return 1;
}
static ssize_t firmware_version_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
@ -571,11 +615,12 @@ static const struct hid_device_id shield_devices[] = {
MODULE_DEVICE_TABLE(hid, shield_devices);
static struct hid_driver shield_driver = {
.name = "shield",
.id_table = shield_devices,
.probe = shield_probe,
.remove = shield_remove,
.raw_event = shield_raw_event,
.name = "shield",
.id_table = shield_devices,
.input_mapping = android_input_mapping,
.probe = shield_probe,
.remove = shield_remove,
.raw_event = shield_raw_event,
.driver = {
.dev_groups = shield_device_groups,
},