From: Stefan Seyfried seife+kernel@b1-systems.com
[ Upstream commit 65a3e6c8d3f7c346813a05f3d76fc46b640d76d6 ]
In the definition of panasonic_keymap[] the key codes are given in decimal, later checks are done with hexadecimal values, which does not help in understanding the code. Additionally use two helper variables to shorten the code and make the logic more obvious.
Fixes: ed83c9171829 ("platform/x86: panasonic-laptop: Resolve hotkey double trigger bug") Signed-off-by: Stefan Seyfried seife+kernel@b1-systems.com Reviewed-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Hans de Goede hdegoede@redhat.com Reviewed-by: Andy Shevchenko andriy.shevchenko@linux.intel.com Link: https://lore.kernel.org/r/20220624112340.10130-3-hdegoede@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/platform/x86/panasonic-laptop.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-)
diff --git a/drivers/platform/x86/panasonic-laptop.c b/drivers/platform/x86/panasonic-laptop.c index 37850d07987d..ca6137f4000f 100644 --- a/drivers/platform/x86/panasonic-laptop.c +++ b/drivers/platform/x86/panasonic-laptop.c @@ -762,6 +762,8 @@ static void acpi_pcc_generate_keyinput(struct pcc_acpi *pcc) struct input_dev *hotk_input_dev = pcc->input_dev; int rc; unsigned long long result; + unsigned int key; + unsigned int updown;
rc = acpi_evaluate_integer(pcc->handle, METHOD_HKEY_QUERY, NULL, &result); @@ -770,18 +772,22 @@ static void acpi_pcc_generate_keyinput(struct pcc_acpi *pcc) return; }
+ key = result & 0xf; + updown = result & 0x80; /* 0x80 == key down; 0x00 = key up */ + /* hack: some firmware sends no key down for sleep / hibernate */ - if ((result & 0xf) == 0x7 || (result & 0xf) == 0xa) { - if (result & 0x80) + if (key == 7 || key == 10) { + if (updown) sleep_keydown_seen = 1; if (!sleep_keydown_seen) sparse_keymap_report_event(hotk_input_dev, - result & 0xf, 0x80, false); + key, 0x80, false); }
- if ((result & 0xf) == 0x7 || (result & 0xf) == 0x9 || (result & 0xf) == 0xa) { + /* for the magic values, see panasonic_keymap[] above */ + if (key == 7 || key == 9 || key == 10) { if (!sparse_keymap_report_event(hotk_input_dev, - result & 0xf, result & 0x80, false)) + key, updown, false)) pr_err("Unknown hotkey event: 0x%04llx\n", result); } }