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Signed-off-by: Rahul Rameshbabu --- drivers/hid/hid-nvidia-shield.c | 55 ++++++++++++++++++++++++++++++--- 1 file changed, 50 insertions(+), 5 deletions(-) diff --git a/drivers/hid/hid-nvidia-shield.c b/drivers/hid/hid-nvidia-shield.c index bcf345e365c0..1a9d32b2c80c 100644 --- a/drivers/hid/hid-nvidia-shield.c +++ b/drivers/hid/hid-nvidia-shield.c @@ -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, }, From patchwork Mon May 29 22:20:51 2023 Content-Type: text/plain; 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Signed-off-by: Rahul Rameshbabu --- drivers/hid/hid-nvidia-shield.c | 116 ++++++++++++++++++++++++++++++-- 1 file changed, 111 insertions(+), 5 deletions(-) diff --git a/drivers/hid/hid-nvidia-shield.c b/drivers/hid/hid-nvidia-shield.c index 1a9d32b2c80c..7dfaec1c07e2 100644 --- a/drivers/hid/hid-nvidia-shield.c +++ b/drivers/hid/hid-nvidia-shield.c @@ -8,6 +8,7 @@ #include #include #include +#include #include #include #include @@ -35,6 +36,7 @@ enum { THUNDERSTRIKE_FW_VERSION_UPDATE = 0, THUNDERSTRIKE_BOARD_INFO_UPDATE, THUNDERSTRIKE_HAPTICS_UPDATE, + THUNDERSTRIKE_LED_UPDATE, }; enum { @@ -45,12 +47,19 @@ enum { enum { THUNDERSTRIKE_HOSTCMD_ID_FW_VERSION = 1, + THUNDERSTRIKE_HOSTCMD_ID_LED = 6, THUNDERSTRIKE_HOSTCMD_ID_BOARD_INFO = 16, THUNDERSTRIKE_HOSTCMD_ID_USB_INIT = 53, THUNDERSTRIKE_HOSTCMD_ID_HAPTICS = 57, THUNDERSTRIKE_HOSTCMD_ID_BLUETOOTH_INIT = 58, }; +enum thunderstrike_led_state { + THUNDERSTRIKE_LED_OFF = 1, + THUNDERSTRIKE_LED_ON = 8, +} __packed; +static_assert(sizeof(enum thunderstrike_led_state) == 1); + struct thunderstrike_hostcmd_board_info { __le16 revision; __le16 serial[7]; @@ -70,6 +79,7 @@ struct thunderstrike_hostcmd_resp_report { struct thunderstrike_hostcmd_board_info board_info; struct thunderstrike_hostcmd_haptics motors; __le16 fw_version; + enum thunderstrike_led_state led_state; u8 payload[30]; }; } __packed; @@ -81,10 +91,16 @@ struct thunderstrike_hostcmd_req_report { u8 cmd_id; u8 reserved_at_10; - struct { - u8 update; - struct thunderstrike_hostcmd_haptics motors; - } haptics; + union { + struct { + u8 update; + enum thunderstrike_led_state state; + } led; + struct { + u8 update; + struct thunderstrike_hostcmd_haptics motors; + } haptics; + }; u8 reserved_at_30[27]; } __packed; static_assert(sizeof(struct thunderstrike_hostcmd_req_report) == @@ -108,12 +124,15 @@ struct thunderstrike { /* Sub-devices */ struct input_dev *haptics_dev; + struct led_classdev led_dev; /* Resources */ void *req_report_dmabuf; unsigned long update_flags; struct thunderstrike_hostcmd_haptics haptics_val; spinlock_t haptics_update_lock; + u8 led_state : 1; + enum thunderstrike_led_state led_value; struct work_struct hostcmd_req_work; }; @@ -221,6 +240,13 @@ static void thunderstrike_hostcmd_req_work_handler(struct work_struct *work) thunderstrike_send_hostcmd_request(ts); } + if (test_and_clear_bit(THUNDERSTRIKE_LED_UPDATE, &ts->update_flags)) { + thunderstrike_hostcmd_req_report_init(report, THUNDERSTRIKE_HOSTCMD_ID_LED); + report->led.update = 1; + report->led.state = ts->led_value; + thunderstrike_send_hostcmd_request(ts); + } + if (test_and_clear_bit(THUNDERSTRIKE_BOARD_INFO_UPDATE, &ts->update_flags)) { thunderstrike_hostcmd_req_report_init( report, THUNDERSTRIKE_HOSTCMD_ID_BOARD_INFO); @@ -292,6 +318,40 @@ static int thunderstrike_play_effect(struct input_dev *idev, void *data, return thunderstrike_update_haptics(ts, &motors); } +static enum led_brightness +thunderstrike_led_get_brightness(struct led_classdev *led) +{ + struct hid_device *hdev = to_hid_device(led->dev->parent); + struct shield_device *shield_dev = hid_get_drvdata(hdev); + struct thunderstrike *ts; + + ts = container_of(shield_dev, struct thunderstrike, base); + + return ts->led_state; +} + +static void thunderstrike_led_set_brightness(struct led_classdev *led, + enum led_brightness value) +{ + struct hid_device *hdev = to_hid_device(led->dev->parent); + struct shield_device *shield_dev = hid_get_drvdata(hdev); + struct thunderstrike *ts; + + ts = container_of(shield_dev, struct thunderstrike, base); + + switch (value) { + case LED_OFF: + ts->led_value = THUNDERSTRIKE_LED_OFF; + break; + default: + ts->led_value = THUNDERSTRIKE_LED_ON; + break; + } + + set_bit(THUNDERSTRIKE_LED_UPDATE, &ts->update_flags); + schedule_work(&ts->hostcmd_req_work); +} + static void thunderstrike_parse_fw_version_payload(struct shield_device *shield_dev, __le16 fw_version) @@ -338,6 +398,24 @@ thunderstrike_parse_haptics_payload(struct shield_device *shield_dev, haptics->motor_left, haptics->motor_right); } +static void +thunderstrike_parse_led_payload(struct shield_device *shield_dev, + enum thunderstrike_led_state led_state) +{ + struct thunderstrike *ts = container_of(shield_dev, struct thunderstrike, base); + + switch (led_state) { + case THUNDERSTRIKE_LED_OFF: + ts->led_state = 0; + break; + case THUNDERSTRIKE_LED_ON: + ts->led_state = 1; + break; + } + + hid_dbg(shield_dev->hdev, "Thunderstrike led HOSTCMD response, 0x%02X\n", led_state); +} + static int thunderstrike_parse_report(struct shield_device *shield_dev, struct hid_report *report, u8 *data, int size) @@ -364,6 +442,9 @@ static int thunderstrike_parse_report(struct shield_device *shield_dev, thunderstrike_parse_fw_version_payload( shield_dev, hostcmd_resp_report->fw_version); break; + case THUNDERSTRIKE_HOSTCMD_ID_LED: + thunderstrike_parse_led_payload(shield_dev, hostcmd_resp_report->led_state); + break; case THUNDERSTRIKE_HOSTCMD_ID_BOARD_INFO: thunderstrike_parse_board_info_payload( shield_dev, &hostcmd_resp_report->board_info); @@ -395,10 +476,24 @@ static int thunderstrike_parse_report(struct shield_device *shield_dev, return 0; } +static inline int thunderstrike_led_create(struct thunderstrike *ts) +{ + struct led_classdev *led = &ts->led_dev; + + led->name = "thunderstrike:blue:led"; + led->max_brightness = 1; + led->flags = LED_CORE_SUSPENDRESUME; + led->brightness_get = &thunderstrike_led_get_brightness; + led->brightness_set = &thunderstrike_led_set_brightness; + + return led_classdev_register(&ts->base.hdev->dev, led); +} + static struct shield_device *thunderstrike_create(struct hid_device *hdev) { struct shield_device *shield_dev; struct thunderstrike *ts; + int ret; ts = devm_kzalloc(&hdev->dev, sizeof(*ts), GFP_KERNEL); if (!ts) @@ -418,12 +513,22 @@ static struct shield_device *thunderstrike_create(struct hid_device *hdev) hid_set_drvdata(hdev, shield_dev); + ret = thunderstrike_led_create(ts); + if (ret) { + hid_err(hdev, "Failed to create Thunderstrike LED instance\n"); + return ERR_PTR(ret); + } + ts->haptics_dev = shield_haptics_create(shield_dev, thunderstrike_play_effect); if (IS_ERR(ts->haptics_dev)) - return ERR_CAST(ts->haptics_dev); + goto err; hid_info(hdev, "Registered Thunderstrike controller\n"); return shield_dev; + +err: + led_classdev_unregister(&ts->led_dev); + return ERR_CAST(ts->haptics_dev); } static int android_input_mapping(struct hid_device *hdev, struct hid_input *hi, @@ -599,6 +704,7 @@ static void shield_remove(struct hid_device *hdev) ts = container_of(dev, struct thunderstrike, base); hid_hw_close(hdev); + led_classdev_unregister(&ts->led_dev); if (ts->haptics_dev) input_unregister_device(ts->haptics_dev); cancel_work_sync(&ts->hostcmd_req_work); From patchwork Mon May 29 22:20:52 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rahul Rameshbabu X-Patchwork-Id: 687073 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8CE96C7EE2F for ; Mon, 29 May 2023 22:21:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229904AbjE2WVM (ORCPT ); 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Signed-off-by: Rahul Rameshbabu --- Notes: This patch really should be updated in the initial patch that introduces the nvidia-shield HID driver. Using a separate patch to just illustrate this is a cosmetic change if needing to resubmit the original patch for nvidia-shield. Link: https://lore.kernel.org/linux-input/20230418203747.24000-1-rrameshbabu@nvidia.com/ drivers/hid/hid-nvidia-shield.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hid/hid-nvidia-shield.c b/drivers/hid/hid-nvidia-shield.c index 7dfaec1c07e2..85700cec5eac 100644 --- a/drivers/hid/hid-nvidia-shield.c +++ b/drivers/hid/hid-nvidia-shield.c @@ -202,7 +202,7 @@ static struct input_dev *shield_haptics_create( return haptics; - err: +err: input_free_device(haptics); return ERR_PTR(ret); }