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| author |   David Herrmann <dh.herrmann@gmail.com> | 2018-01-12 12:04:45 +0100 |
|---|---|---|
| committer |   Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2018-01-24 08:39:06 +0200 |
| commit | 587d8628fb71c3bfae29fb2bbe84c1478c59bac8 (patch) | |
| tree | e5a128d27bb949c845d7cca70098eafb9a743640 /drivers/platform | |
| parent | platform/x86: silead_dmi: Add entry for newer BIOS for Trekstor Surftab 7.0 (diff) | |
| download | linux-dev-587d8628fb71c3bfae29fb2bbe84c1478c59bac8.tar.xz linux-dev-587d8628fb71c3bfae29fb2bbe84c1478c59bac8.zip | |
platform/x86: thinkpad_acpi: suppress warning about palm detection
This patch prevents the thinkpad_acpi driver from warning about 2 event
codes returned for keyboard palm-detection. No behavioral changes,
other than suppressing the warning in the kernel log. The events are
still forwarded via acpi-netlink channels.
We could, optionally, decide to forward the event through a
input-switch on the tpacpi input device. However, so far no suitable
input-code exists, and no similar drivers report such events. Hence,
leave it an acpi event for now.
Note that the event-codes are named based on empirical studies. On the
ThinkPad X1 5th Gen the sensor can be found underneath the arrow key.
Cc: Matthew Thode <mthode@mthode.org>
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/thinkpad_acpi.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index 7dcbd97710a9..d5eaf3b1edba 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -214,6 +214,10 @@ enum tpacpi_hkey_event_t { /* AC-related events */ TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */ + /* Further user-interface events */ + TP_HKEY_EV_PALM_DETECTED = 0x60b0, /* palm hoveres keyboard */ + TP_HKEY_EV_PALM_UNDETECTED = 0x60b1, /* palm removed */ + /* Misc */ TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */ }; @@ -4077,6 +4081,12 @@ static bool hotkey_notify_6xxx(const u32 hkey, *send_acpi_ev = false; break; + case TP_HKEY_EV_PALM_DETECTED: + case TP_HKEY_EV_PALM_UNDETECTED: + /* palm detected hovering the keyboard, forward to user-space + * via netlink for consumption */ + return true; + default: pr_warn("unknown possible thermal alarm or keyboard event received\n"); known = false; |