diff options
| -rw-r--r-- | drivers/hid/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/hid/hid-appletb-kbd.c | 83 |
2 files changed, 81 insertions, 4 deletions
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig index c42f989553da..0495168224f8 100644 --- a/drivers/hid/Kconfig +++ b/drivers/hid/Kconfig @@ -161,8 +161,10 @@ config HID_APPLETB_BL config HID_APPLETB_KBD tristate "Apple Touch Bar Keyboard Mode" depends on USB_HID + depends on BACKLIGHT_CLASS_DEVICE depends on INPUT select INPUT_SPARSEKMAP + select HID_APPLETB_BL help Say Y here if you want support for the keyboard mode (escape, function, media and brightness keys) of Touch Bars on x86 MacBook diff --git a/drivers/hid/hid-appletb-kbd.c b/drivers/hid/hid-appletb-kbd.c index de577050020c..fa28a691da6a 100644 --- a/drivers/hid/hid-appletb-kbd.c +++ b/drivers/hid/hid-appletb-kbd.c @@ -16,6 +16,8 @@ #include <linux/bitops.h> #include <linux/module.h> #include <linux/string.h> +#include <linux/backlight.h> +#include <linux/timer.h> #include <linux/input/sparse-keymap.h> #include "hid-ids.h" @@ -27,6 +29,7 @@ #define APPLETB_KBD_MODE_MAX APPLETB_KBD_MODE_OFF #define APPLETB_DEVID_KEYBOARD 1 +#define APPLETB_DEVID_TRACKPAD 2 #define HID_USAGE_MODE 0x00ff0004 @@ -41,14 +44,29 @@ static bool appletb_tb_fn_toggle = true; module_param_named(fntoggle, appletb_tb_fn_toggle, bool, 0644); MODULE_PARM_DESC(fntoggle, "Switch between Fn and media controls on pressing Fn key"); +static bool appletb_tb_autodim = true; +module_param_named(autodim, appletb_tb_autodim, bool, 0644); +MODULE_PARM_DESC(autodim, "Automatically dim and turn off the Touch Bar after some time"); + +static int appletb_tb_dim_timeout = 60; +module_param_named(dim_timeout, appletb_tb_dim_timeout, int, 0644); +MODULE_PARM_DESC(dim_timeout, "Dim timeout in sec"); + +static int appletb_tb_idle_timeout = 15; +module_param_named(idle_timeout, appletb_tb_idle_timeout, int, 0644); +MODULE_PARM_DESC(idle_timeout, "Idle timeout in sec"); + struct appletb_kbd { struct hid_field *mode_field; - - u8 saved_mode; - u8 current_mode; struct input_handler inp_handler; struct input_handle kbd_handle; - + struct input_handle tpd_handle; + struct backlight_device *backlight_dev; + struct timer_list inactivity_timer; + bool has_dimmed; + bool has_turned_off; + u8 saved_mode; + u8 current_mode; }; static const struct key_entry appletb_kbd_keymap[] = { @@ -146,6 +164,34 @@ static int appletb_tb_key_to_slot(unsigned int code) } } +static void appletb_inactivity_timer(struct timer_list *t) +{ + struct appletb_kbd *kbd = from_timer(kbd, t, inactivity_timer); + + if (kbd->backlight_dev && appletb_tb_autodim) { + if (!kbd->has_dimmed) { + backlight_device_set_brightness(kbd->backlight_dev, 1); + kbd->has_dimmed = true; + mod_timer(&kbd->inactivity_timer, jiffies + msecs_to_jiffies(appletb_tb_idle_timeout * 1000)); + } else if (!kbd->has_turned_off) { + backlight_device_set_brightness(kbd->backlight_dev, 0); + kbd->has_turned_off = true; + } + } +} + +static void reset_inactivity_timer(struct appletb_kbd *kbd) +{ + if (kbd->backlight_dev && appletb_tb_autodim) { + if (kbd->has_dimmed || kbd->has_turned_off) { + backlight_device_set_brightness(kbd->backlight_dev, 2); + kbd->has_dimmed = false; + kbd->has_turned_off = false; + } + mod_timer(&kbd->inactivity_timer, jiffies + msecs_to_jiffies(appletb_tb_dim_timeout * 1000)); + } +} + static int appletb_kbd_hid_event(struct hid_device *hdev, struct hid_field *field, struct hid_usage *usage, __s32 value) { @@ -170,6 +216,8 @@ static int appletb_kbd_hid_event(struct hid_device *hdev, struct hid_field *fiel if (slot < 0) return 0; + reset_inactivity_timer(kbd); + translation = sparse_keymap_entry_from_scancode(input, usage->code); if (translation && kbd->current_mode == APPLETB_KBD_MODE_SPCL) { @@ -186,6 +234,8 @@ static void appletb_kbd_inp_event(struct input_handle *handle, unsigned int type { struct appletb_kbd *kbd = handle->private; + reset_inactivity_timer(kbd); + if (type == EV_KEY && code == KEY_FN && appletb_tb_fn_toggle) { if (value == 1) { kbd->saved_mode = kbd->current_mode; @@ -211,6 +261,9 @@ static int appletb_kbd_inp_connect(struct input_handler *handler, if (id->driver_info == APPLETB_DEVID_KEYBOARD) { handle = &kbd->kbd_handle; handle->name = "tbkbd"; + } else if (id->driver_info == APPLETB_DEVID_TRACKPAD) { + handle = &kbd->tpd_handle; + handle->name = "tbtpd"; } else { return -ENOENT; } @@ -283,6 +336,15 @@ static const struct input_device_id appletb_kbd_input_devices[] = { .keybit = { [BIT_WORD(KEY_FN)] = BIT_MASK(KEY_FN) }, .driver_info = APPLETB_DEVID_KEYBOARD, }, + { + .flags = INPUT_DEVICE_ID_MATCH_BUS | + INPUT_DEVICE_ID_MATCH_VENDOR | + INPUT_DEVICE_ID_MATCH_KEYBIT, + .bustype = BUS_USB, + .vendor = USB_VENDOR_ID_APPLE, + .keybit = { [BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH) }, + .driver_info = APPLETB_DEVID_TRACKPAD, + }, { } }; @@ -339,6 +401,15 @@ static int appletb_kbd_probe(struct hid_device *hdev, const struct hid_device_id goto stop_hw; } + kbd->backlight_dev = backlight_device_get_by_name("appletb_backlight"); + if (!kbd->backlight_dev) + dev_err_probe(dev, ret, "Failed to get backlight device\n"); + else { + backlight_device_set_brightness(kbd->backlight_dev, 2); + timer_setup(&kbd->inactivity_timer, appletb_inactivity_timer, 0); + mod_timer(&kbd->inactivity_timer, jiffies + msecs_to_jiffies(appletb_tb_dim_timeout * 1000)); + } + kbd->inp_handler.event = appletb_kbd_inp_event; kbd->inp_handler.connect = appletb_kbd_inp_connect; kbd->inp_handler.disconnect = appletb_kbd_inp_disconnect; @@ -377,6 +448,7 @@ static void appletb_kbd_remove(struct hid_device *hdev) appletb_kbd_set_mode(kbd, APPLETB_KBD_MODE_OFF); input_unregister_handler(&kbd->inp_handler); + del_timer_sync(&kbd->inactivity_timer); hid_hw_close(hdev); hid_hw_stop(hdev); @@ -425,6 +497,9 @@ static struct hid_driver appletb_kbd_hid_driver = { }; module_hid_driver(appletb_kbd_hid_driver); +/* The backlight driver should be loaded before the keyboard driver is initialised*/ +MODULE_SOFTDEP("pre: hid_appletb_bl"); + MODULE_AUTHOR("Ronald Tschalär"); MODULE_AUTHOR("Kerem Karabay <kekrby@gmail.com>"); MODULE_DESCRIPTION("MacBookPro Touch Bar Keyboard Mode Driver"); |