platform/x86: dell-laptop: Fix keyboard max lighting for Dell Latitude E6410
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>
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@ -37,6 +37,7 @@
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struct quirk_entry {
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u8 touchpad_led;
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u8 kbd_led_levels_off_1;
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int needs_kbd_timeouts;
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/*
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@ -67,6 +68,10 @@ static struct quirk_entry quirk_dell_xps13_9333 = {
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.kbd_timeouts = { 0, 5, 15, 60, 5 * 60, 15 * 60, -1 },
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};
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static struct quirk_entry quirk_dell_latitude_e6410 = {
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.kbd_led_levels_off_1 = 1,
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};
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static struct platform_driver platform_driver = {
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.driver = {
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.name = "dell-laptop",
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@ -269,6 +274,15 @@ static const struct dmi_system_id dell_quirks[] __initconst = {
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},
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.driver_data = &quirk_dell_xps13_9333,
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},
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{
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.callback = dmi_matched,
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.ident = "Dell Latitude E6410",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "Latitude E6410"),
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},
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.driver_data = &quirk_dell_latitude_e6410,
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},
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{ }
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};
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@ -1149,6 +1163,9 @@ static int kbd_get_info(struct kbd_info *info)
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units = (buffer->output[2] >> 8) & 0xFF;
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info->levels = (buffer->output[2] >> 16) & 0xFF;
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if (quirks && quirks->kbd_led_levels_off_1 && info->levels)
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info->levels--;
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if (units & BIT(0))
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info->seconds = (buffer->output[3] >> 0) & 0xFF;
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if (units & BIT(1))
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