linux-kernel - Re: [PATCH v3 3/3] HID: apple: Add fn mapping for MacBook Pros with Touch Bar

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Date:   Wed, 16 Feb 2022 16:57:26 +0100 (CET)
From:   Jiri Kosina <jikos@...nel.org>
To:     Aditya Garg <gargaditya08@...e.com>
cc:     "alexhenrie24@...il.com" <alexhenrie24@...il.com>,
        "benjamin.tissoires@...hat.com" <benjamin.tissoires@...hat.com>,
        "linux-input@...r.kernel.org" <linux-input@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "paul@...rm.io" <paul@...rm.io>, Aun-Ali Zaidi <admin@...eit.net>,
        Orlando Chamberlain <redecorating@...tonmail.com>
Subject: Re: [PATCH v3 3/3] HID: apple: Add fn mapping for MacBook Pros with
 Touch Bar

On Thu, 3 Feb 2022, Aditya Garg wrote:

> From: Aditya Garg <gargaditya08@...e.com>
> 
> This patch adds the Fn mapping for keyboards on certain T2 Macs.
> 
> Signed-off-by: Aditya Garg <gargaditya08@...e.com>
> ---
> v2 :- Use better approach to map fn keys
> v3 :- Use BIT(10) for APPLE_BACKLIGHT_CTL since 0x0200 (BIT (9)) has been used.
>  drivers/hid/hid-apple.c | 62 +++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 62 insertions(+)
> 
> diff --git a/drivers/hid/hid-apple.c b/drivers/hid/hid-apple.c
> index 658d79375..5448e5a66 100644
> --- a/drivers/hid/hid-apple.c
> +++ b/drivers/hid/hid-apple.c
> @@ -142,6 +142,51 @@ static const struct apple_key_translation macbookair_fn_keys[] = {
>  	{ }
>  };
>  
> +static const struct apple_key_translation macbookpro_no_esc_fn_keys[] = {
> +	{ KEY_BACKSPACE, KEY_DELETE },
> +	{ KEY_ENTER,	KEY_INSERT },
> +	{ KEY_GRAVE,	KEY_ESC },
> +	{ KEY_1,	KEY_F1 },
> +	{ KEY_2,	KEY_F2 },
> +	{ KEY_3,	KEY_F3 },
> +	{ KEY_4,	KEY_F4 },
> +	{ KEY_5,	KEY_F5 },
> +	{ KEY_6,	KEY_F6 },
> +	{ KEY_7,	KEY_F7 },
> +	{ KEY_8,	KEY_F8 },
> +	{ KEY_9,	KEY_F9 },
> +	{ KEY_0,	KEY_F10 },
> +	{ KEY_MINUS,	KEY_F11 },
> +	{ KEY_EQUAL,	KEY_F12 },
> +	{ KEY_UP,	KEY_PAGEUP },
> +	{ KEY_DOWN,	KEY_PAGEDOWN },
> +	{ KEY_LEFT,	KEY_HOME },
> +	{ KEY_RIGHT,	KEY_END },
> +	{ }
> +};
> +
> +static const struct apple_key_translation macbookpro_dedicated_esc_fn_keys[] = {
> +	{ KEY_BACKSPACE, KEY_DELETE },
> +	{ KEY_ENTER,	KEY_INSERT },
> +	{ KEY_1,	KEY_F1 },
> +	{ KEY_2,	KEY_F2 },
> +	{ KEY_3,	KEY_F3 },
> +	{ KEY_4,	KEY_F4 },
> +	{ KEY_5,	KEY_F5 },
> +	{ KEY_6,	KEY_F6 },
> +	{ KEY_7,	KEY_F7 },
> +	{ KEY_8,	KEY_F8 },
> +	{ KEY_9,	KEY_F9 },
> +	{ KEY_0,	KEY_F10 },
> +	{ KEY_MINUS,	KEY_F11 },
> +	{ KEY_EQUAL,	KEY_F12 },
> +	{ KEY_UP,	KEY_PAGEUP },
> +	{ KEY_DOWN,	KEY_PAGEDOWN },
> +	{ KEY_LEFT,	KEY_HOME },
> +	{ KEY_RIGHT,	KEY_END },
> +	{ }
> +};
> +
>  static const struct apple_key_translation apple_fn_keys[] = {
>  	{ KEY_BACKSPACE, KEY_DELETE },
>  	{ KEY_ENTER,	KEY_INSERT },
> @@ -269,6 +314,17 @@ static int hidinput_apple_event(struct hid_device *hid, struct input_dev *input,
>  		    hid->product == USB_DEVICE_ID_APPLE_MAGIC_KEYBOARD_FINGERPRINT_2021 ||
>  		    hid->product == USB_DEVICE_ID_APPLE_MAGIC_KEYBOARD_NUMPAD_2021)
>  			table = apple2021_fn_keys;
> +		else if (hid->product == USB_DEVICE_ID_APPLE_WELLSPRINGT2_J132 ||
> +			 hid->product == USB_DEVICE_ID_APPLE_WELLSPRINGT2_J680 ||
> +			 hid->product == USB_DEVICE_ID_APPLE_WELLSPRINGT2_J213)
> +				table = macbookpro_no_esc_fn_keys;
> +		else if (hid->product == USB_DEVICE_ID_APPLE_WELLSPRINGT2_J214K ||
> +			 hid->product == USB_DEVICE_ID_APPLE_WELLSPRINGT2_J223 ||
> +			 hid->product == USB_DEVICE_ID_APPLE_WELLSPRINGT2_J152F)
> +				table = macbookpro_dedicated_esc_fn_keys;
> +		else if (hid->product == USB_DEVICE_ID_APPLE_WELLSPRINGT2_J140K ||
> +			 hid->product == USB_DEVICE_ID_APPLE_WELLSPRINGT2_J230K)
> +				table = apple_fn_keys;
>  		else if (hid->product >= USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI &&
>  				hid->product <= USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS)
>  			table = macbookair_fn_keys;
> @@ -480,6 +536,12 @@ static void apple_setup_input(struct input_dev *input)
>  	set_bit(KEY_NUMLOCK, input->keybit);
>  
>  	/* Enable all needed keys */
> +	for (trans = macbookpro_no_esc_fn_keys; trans->from; trans++)
> +		set_bit(trans->to, input->keybit);
> +
> +	for (trans = macbookpro_dedicated_esc_fn_keys; trans->from; trans++)
> +		set_bit(trans->to, input->keybit);
> +

This needed to be rebased on top of earlier José's refactoring of the 
mapping setup patches; I've done that and pushed the whole series to 
for-5.18/apple

Thanks,

-- 
Jiri Kosina
SUSE Labs