On Mon, Jun 13, 2016 at 10:57 PM, João Paulo Rechi Vita
<jprvita@xxxxxxxxx> wrote:
>
> Some Asus laptops that have an airplane-mode indicator LED, also have
> the WMI WLAN user bit set, and the following bits in their DSDT:
>
> Scope (_SB)
> {
> (...)
> Device (ATKD)
> {
> (...)
> Method (WMNB, 3, Serialized)
> {
> (...)
> If (LEqual (IIA0, 0x00010002))
> {
> OWGD (IIA1)
> Return (One)
> }
> }
> }
> }
>
> So when asus-wmi uses ASUS_WMI_DEVID_WLAN_LED (0x00010002) to store the
> wlan state, it drives the airplane-mode indicator LED (through the call
> to OWGD) in an inverted fashion: the LED is ON when airplane mode is OFF
> (since wlan is ON), and vice-versa.
Have you tried check the values of SFUN for these laptops ? It's
supposed to have 1 bit per "feature"
maybe there is a bit that we could use to enable this quirk (this can
clearly be done after this whole series).
>
> This commit creates a quirk to not register a RFKill switch at all for
> these laptops, to allow the asus-wireless driver to drive the airplane
> mode LED correctly through the ASHS ACPI device. It also adds a match to
> that quirk for the Asus X555UB, which is affected by this problem.
>
> Signed-off-by: João Paulo Rechi Vita <jprvita@xxxxxxxxxxxx>
> ---
> drivers/platform/x86/asus-nb-wmi.c | 13 +++++++++++++
> drivers/platform/x86/asus-wmi.c | 8 +++++---
> drivers/platform/x86/asus-wmi.h | 1 +
> 3 files changed, 19 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/platform/x86/asus-nb-wmi.c b/drivers/platform/x86/asus-nb-wmi.c
> index 091ca7a..90c8f41 100644
> --- a/drivers/platform/x86/asus-nb-wmi.c
> +++ b/drivers/platform/x86/asus-nb-wmi.c
> @@ -78,6 +78,10 @@ static struct quirk_entry quirk_asus_x200ca = {
> .wapf = 2,
> };
>
> +static struct quirk_entry quirk_no_rfkill = {
> + .no_rfkill = true,
> +};
> +
> static int dmi_matched(const struct dmi_system_id *dmi)
> {
> quirks = dmi->driver_data;
> @@ -306,6 +310,15 @@ static const struct dmi_system_id asus_quirks[] = {
> },
> .driver_data = &quirk_asus_x200ca,
> },
> + {
> + .callback = dmi_matched,
> + .ident = "ASUSTeK COMPUTER INC. X555UB",
> + .matches = {
> + DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
> + DMI_MATCH(DMI_PRODUCT_NAME, "X555UB"),
> + },
> + .driver_data = &quirk_no_rfkill,
> + },
> {},
> };
>
> diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
> index a26dca3..7c093a0 100644
> --- a/drivers/platform/x86/asus-wmi.c
> +++ b/drivers/platform/x86/asus-wmi.c
> @@ -2069,9 +2069,11 @@ static int asus_wmi_add(struct platform_device *pdev)
> if (err)
> goto fail_leds;
>
> - err = asus_wmi_rfkill_init(asus);
> - if (err)
> - goto fail_rfkill;
> + if (!asus->driver->quirks->no_rfkill) {
> + err = asus_wmi_rfkill_init(asus);
> + if (err)
> + goto fail_rfkill;
> + }
>
> /* Some Asus desktop boards export an acpi-video backlight interface,
> stop this from showing up */
> diff --git a/drivers/platform/x86/asus-wmi.h b/drivers/platform/x86/asus-wmi.h
> index 4da4c8b..5de1df5 100644
> --- a/drivers/platform/x86/asus-wmi.h
> +++ b/drivers/platform/x86/asus-wmi.h
> @@ -38,6 +38,7 @@ struct key_entry;
> struct asus_wmi;
>
> struct quirk_entry {
> + bool no_rfkill;
> bool hotplug_wireless;
> bool scalar_panel_brightness;
> bool store_backlight_power;
> --
> 2.5.0
>
--
Corentin Chary
http://xf.iksaif.net
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