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| author | Pali Rohár <pali.rohar@gmail.com> | 2017-11-02 21:25:24 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-02-25 11:08:03 +0100 |
| commit | 8babb53208856c1ec982c7bc26024865d0fba3a4 (patch) | |
| tree | a14faf8ce14ee8f293fef39e29b422c94b538ba4 /drivers/platform | |
| parent | 721d4b02495c917032ec66e8de4251f55717ca9b (diff) | |
| download | linux-stable-8babb53208856c1ec982c7bc26024865d0fba3a4.tar.gz linux-stable-8babb53208856c1ec982c7bc26024865d0fba3a4.tar.bz2 linux-stable-8babb53208856c1ec982c7bc26024865d0fba3a4.zip | |
platform/x86: dell-laptop: Fix keyboard max lighting for Dell Latitude E6410
[ Upstream commit 68a213d325c23d39f109f4c7c824b906a7d209de ]
This machine reports number of keyboard backlight led levels, instead of
value of the last led level index. Therefore max_brightness properly needs
to be subtracted by 1 to match led max_brightness API.
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Reported-by: Gabriel M. Elder <gabriel@tekgnowsys.com>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=196913
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/dell-laptop.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c index f42159fd2031..7424e53157b0 100644 --- a/drivers/platform/x86/dell-laptop.c +++ b/drivers/platform/x86/dell-laptop.c @@ -49,6 +49,7 @@ struct quirk_entry { u8 touchpad_led; + u8 kbd_led_levels_off_1; int needs_kbd_timeouts; /* @@ -79,6 +80,10 @@ static struct quirk_entry quirk_dell_xps13_9333 = { .kbd_timeouts = { 0, 5, 15, 60, 5 * 60, 15 * 60, -1 }, }; +static struct quirk_entry quirk_dell_latitude_e6410 = { + .kbd_led_levels_off_1 = 1, +}; + static struct platform_driver platform_driver = { .driver = { .name = "dell-laptop", @@ -280,6 +285,15 @@ static const struct dmi_system_id dell_quirks[] __initconst = { }, .driver_data = &quirk_dell_xps13_9333, }, + { + .callback = dmi_matched, + .ident = "Dell Latitude E6410", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "Latitude E6410"), + }, + .driver_data = &quirk_dell_latitude_e6410, + }, { } }; @@ -1200,6 +1214,9 @@ static int kbd_get_info(struct kbd_info *info) units = (buffer->output[2] >> 8) & 0xFF; info->levels = (buffer->output[2] >> 16) & 0xFF; + if (quirks && quirks->kbd_led_levels_off_1 && info->levels) + info->levels--; + if (units & BIT(0)) info->seconds = (buffer->output[3] >> 0) & 0xFF; if (units & BIT(1)) |