HID: apple: Swap the Fn and Left Control keys on Apple keyboards (346338ef) · Commits · 戴 / test

drivers/hid/hid-apple.c

+28 −2

Original line number	Diff line number	Diff line
		@@ -51,6 +51,12 @@ MODULE_PARM_DESC(swap_opt_cmd, "Swap the Option (\"Alt\") and Command (\"Flag\")
		"(For people who want to keep Windows PC keyboard muscle memory. "
		"[0] = as-is, Mac layout. 1 = swapped, Windows layout.)");

		static unsigned int swap_fn_leftctrl;
		module_param(swap_fn_leftctrl, uint, 0644);
		MODULE_PARM_DESC(swap_fn_leftctrl, "Swap the Fn and left Control keys. "
		"(For people who want to keep PC keyboard muscle memory. "
		"[0] = as-is, Mac layout, 1 = swapped, PC layout)");

		struct apple_sc {
		unsigned long quirks;
		unsigned int fn_on;
		@@ -162,6 +168,11 @@ static const struct apple_key_translation swapped_option_cmd_keys[] = {
		{ }
		};

		static const struct apple_key_translation swapped_fn_leftctrl_keys[] = {
		{ KEY_FN, KEY_LEFTCTRL },
		{ }
		};

		static const struct apple_key_translation *apple_find_translation(
		const struct apple_key_translation *table, u16 from)
		{
		@@ -183,9 +194,11 @@ static int hidinput_apple_event(struct hid_device hid, struct input_dev input,
		bool do_translate;
		u16 code = 0;

		if (usage->code == KEY_FN) {
		u16 fn_keycode = (swap_fn_leftctrl) ? (KEY_LEFTCTRL) : (KEY_FN);

		if (usage->code == fn_keycode) {
		asc->fn_on = !!value;
		input_event(input, usage->type, usage->code, value);
		input_event(input, usage->type, KEY_FN, value);
		return 1;
		}

		@@ -270,6 +283,14 @@ static int hidinput_apple_event(struct hid_device hid, struct input_dev input,
		}
		}

		if (swap_fn_leftctrl) {
		trans = apple_find_translation(swapped_fn_leftctrl_keys, usage->code);
		if (trans) {
		input_event(input, usage->type, trans->to, value);
		return 1;
		}
		}

		return 0;
		}

		@@ -333,6 +354,11 @@ static void apple_setup_input(struct input_dev *input)

		for (trans = apple_iso_keyboard; trans->from; trans++)
		set_bit(trans->to, input->keybit);

		if (swap_fn_leftctrl) {
		for (trans = swapped_fn_leftctrl_keys; trans->from; trans++)
		set_bit(trans->to, input->keybit);
		}
		}

		static int apple_input_mapping(struct hid_device hdev, struct hid_input hi,

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