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From: Hans de G. <hde...@re...> - 2024-04-24 14:47:41
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Hi Mark,
On 4/24/24 4:17 PM, Mark Pearson wrote:
> Hi Hans,
>
> On Wed, Apr 24, 2024, at 8:28 AM, Hans de Goede wrote:
>> Change the hotkey_reserved_mask initialization to hardcode the list
>> of reserved keys. There are only a few reserved keys and the code to
>> iterate over the keymap will be removed when moving to sparse-keymaps.
>>
>> Tested-by: Mark Pearson <mpe...@sq...>
>> Signed-off-by: Hans de Goede <hde...@re...>
>> ---
>> drivers/platform/x86/thinkpad_acpi.c | 21 +++++++++++++++------
>> 1 file changed, 15 insertions(+), 6 deletions(-)
>>
>> diff --git a/drivers/platform/x86/thinkpad_acpi.c
>> b/drivers/platform/x86/thinkpad_acpi.c
>> index 952bac635a18..cf5c741d1343 100644
>> --- a/drivers/platform/x86/thinkpad_acpi.c
>> +++ b/drivers/platform/x86/thinkpad_acpi.c
>> @@ -3545,6 +3545,19 @@ static int __init hotkey_init(struct
>> ibm_init_struct *iibm)
>> dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
>> "using keymap number %lu\n", keymap_id);
>>
>> + /* Keys which should be reserved on both IBM and Lenovo models */
>> + hotkey_reserved_mask = TP_ACPI_HKEY_KBD_LIGHT_MASK |
>> + TP_ACPI_HKEY_VOLUP_MASK |
>> + TP_ACPI_HKEY_VOLDWN_MASK |
>> + TP_ACPI_HKEY_MUTE_MASK;
>> + /*
>> + * Reserve brightness up/down unconditionally on IBM models, on Lenovo
>> + * models these are disabled based on acpi_video_get_backlight_type().
>> + */
>> + if (keymap_id == TPACPI_KEYMAP_IBM_GENERIC)
>> + hotkey_reserved_mask |= TP_ACPI_HKEY_BRGHTUP_MASK |
>> + TP_ACPI_HKEY_BRGHTDWN_MASK;
>> +
>> hotkey_keycode_map = kmemdup(&tpacpi_keymaps[keymap_id],
>> TPACPI_HOTKEY_MAP_SIZE, GFP_KERNEL);
>> if (!hotkey_keycode_map) {
>> @@ -3560,9 +3573,6 @@ static int __init hotkey_init(struct
>> ibm_init_struct *iibm)
>> if (hotkey_keycode_map[i] != KEY_RESERVED) {
>> input_set_capability(tpacpi_inputdev, EV_KEY,
>> hotkey_keycode_map[i]);
>> - } else {
>> - if (i < sizeof(hotkey_reserved_mask)*8)
>> - hotkey_reserved_mask |= 1 << i;
>
> Just to check my understanding here - does this change mean that the keys marked as KEY_RESERVED in the lenovo map won't make it into the mask?
>
> e.g the ones in this block:
> KEY_RESERVED, /* Mute held, 0x103 */
> KEY_BRIGHTNESS_MIN, /* Backlight off */
> KEY_RESERVED, /* Clipping tool */
> KEY_RESERVED, /* Cloud */
> KEY_RESERVED,
> KEY_VOICECOMMAND, /* Voice */
> KEY_RESERVED,
> KEY_RESERVED, /* Gestures */
> KEY_RESERVED,
> KEY_RESERVED,
> KEY_RESERVED,
> KEY_CONFIG, /* Settings */
> KEY_RESERVED, /* New tab */
> KEY_REFRESH, /* Reload */
> KEY_BACK, /* Back */
> KEY_RESERVED, /* Microphone down */
> KEY_RESERVED, /* Microphone up */
> KEY_RESERVED, /* Microphone cancellation */
> KEY_RESERVED, /* Camera mode */
> KEY_RESERVED, /* Rotate display, 0x116 */
>
> I'm not sure what the effect will be and I don't have the 2014 X1 Carbon (I assume it's the G1) available to test with unfortunately.
Only the 32 original hotkeys are affected by any of the hotkey_*_mask
values, note:
if (i < sizeof(hotkey_reserved_mask)*8)
hotkey_reserved_mask |= 1 << i;
The (i < sizeof(hotkey_reserved_mask)*8) condition translates to
(i < 32) so this code only ever set bits in hotkey_reserved_mask
for the 32 original hotkeys.
> Just wanted to be sure we weren't breaking something on older platforms.
That is appreciated. As I mentioned in the cover letter I have been
careful to try and not break older platforms, but double checking my
work is appreciated.
Regards,
Hans
>
>> }
>> }
>>
>> @@ -3587,9 +3597,8 @@ static int __init hotkey_init(struct
>> ibm_init_struct *iibm)
>> /* Disable brightness up/down on Lenovo thinkpads when
>> * ACPI is handling them, otherwise it is plain impossible
>> * for userspace to do something even remotely sane */
>> - hotkey_reserved_mask |=
>> - (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
>> - | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
>> + hotkey_reserved_mask |= TP_ACPI_HKEY_BRGHTUP_MASK |
>> + TP_ACPI_HKEY_BRGHTDWN_MASK;
>> hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME);
>> hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND);
>> }
>> --
>> 2.44.0
>
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