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Message-ID: <20200917131232.2t4aos75lrwtdvky@fastboi.localdomain>
Date: Thu, 17 Sep 2020 15:12:32 +0200
From: Samuel Čavoj <samuel@...oj.net>
To: Hans de Goede <hdegoede@...hat.com>
Cc: Darren Hart <dvhart@...radead.org>,
Andy Shevchenko <andy@...radead.org>,
Corentin Chary <corentin.chary@...il.com>,
platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] platform/x86: asus-wmi: Add support for SW_TABLET_MODE
on UX360
Hi.
On 17.09.2020 14:23, Hans de Goede wrote:
> Hi,
>
> On 9/16/20 9:12 PM, Samuel Čavoj wrote:
> > The UX360CA has a WMI device id 0x00060062, which reports whether the
> > lid is flipped in tablet mode (1) or in normal laptop mode (0).
> >
> > This commit adds a quirk (quirk_asus_use_lid_flip_devid) for devices on
> > which this WMI device should be used to figure out the SW_TABLET_MODE
> > state, as opposed to the quirk_asus_use_kbd_dock_devid.
> >
> > It is assumed other UX360* models have the same WMI device. As such, the
> > quirk is applied to devices with DMI_MATCH(DMI_PRODUCT_NAME, "UX360").
> > More devices with this feature need to be tested and added accordingly.
> >
> > The reason for using a whitelist via the quirk mechanism is that the new
> > WMI device (0x00060062) is also present on some models which do not have
> > a 360 degree hinge (at least FX503VD and GL503VD from Hans' DSTS
> > collection) and therefore its presence cannot be relied on.
> >
> > This patch is a followup to "platform/x86: asus-wmi: Fix SW_TABLET_MODE
> > always reporting 1 on many different models" by Hans de Goede.
> >
> > Signed-off-by: Samuel Čavoj <samuel@...oj.net>
> > Cc: Hans de Goede <hdegoede@...hat.com>
> > ---
> > drivers/platform/x86/asus-nb-wmi.c | 14 +++++++++++++
> > drivers/platform/x86/asus-wmi.c | 23 ++++++++++++++++++++++
> > drivers/platform/x86/asus-wmi.h | 1 +
> > include/linux/platform_data/x86/asus-wmi.h | 1 +
> > 4 files changed, 39 insertions(+)
> >
> > diff --git a/drivers/platform/x86/asus-nb-wmi.c b/drivers/platform/x86/asus-nb-wmi.c
> > index 345bd224494b..ae5501e07712 100644
> > --- a/drivers/platform/x86/asus-nb-wmi.c
> > +++ b/drivers/platform/x86/asus-nb-wmi.c
> > @@ -119,6 +119,10 @@ static struct quirk_entry quirk_asus_use_kbd_dock_devid = {
> > .use_kbd_dock_devid = true,
> > };
> > +static struct quirk_entry quirk_asus_use_lid_flip_devid = {
> > + .use_lid_flip_devid = true,
>
>
> Note the default (quirk_asus_unknown) quirks set:
>
> .wmi_backlight_set_devstate = true,
>
> So you're changing that to false for all devices using that
> quirk now. I did not set this quirk for the transformer devices,
> since the quirk has to do with the handling of Fn + F7 (display off hotkey)
> by the embedded-controller. Since on transformer devices the keyboard is
> an USB device and not handled by the embedded-controller they do not need
> the wmi_backlight_set_devstate quirk, so I left it out. Chances are that
> your UX360 does need it. The purpose of the quirk is to make the embbedded
> controller send a KEY_DISPLAY_OFF event on FN + F7 and have it not do anything
> else (like turning off the backlight by itself).
>
> TL;DR: you should probably add: .wmi_backlight_set_devstate = true,
> to your new quirk_asus_use_lid_flip_devid quirk.
>
Of course. I didn't notice that. Thank you.
Should I send a v2 right away, or do I wait for other potential
comments?
Regards,
Sam
>
>
> > +};
> > +
> > static int dmi_matched(const struct dmi_system_id *dmi)
> > {
> > pr_info("Identified laptop model '%s'\n", dmi->ident);
> > @@ -520,6 +524,16 @@ static const struct dmi_system_id asus_quirks[] = {
> > },
> > .driver_data = &quirk_asus_use_kbd_dock_devid,
> > },
> > + {
> > + .callback = dmi_matched,
> > + .ident = "ASUS ZenBook Flip UX360",
> > + .matches = {
> > + DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
> > + /* Match UX360* */
> > + DMI_MATCH(DMI_PRODUCT_NAME, "UX360"),
> > + },
> > + .driver_data = &quirk_asus_use_lid_flip_devid,
> > + },
> > {},
> > };
> > diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
> > index ae6289d37faf..a628a7d9e066 100644
> > --- a/drivers/platform/x86/asus-wmi.c
> > +++ b/drivers/platform/x86/asus-wmi.c
> > @@ -63,6 +63,7 @@ MODULE_LICENSE("GPL");
> > #define NOTIFY_KBD_BRTTOGGLE 0xc7
> > #define NOTIFY_KBD_FBM 0x99
> > #define NOTIFY_KBD_TTP 0xae
> > +#define NOTIFY_LID_FLIP 0xfa
> > #define ASUS_WMI_FNLOCK_BIOS_DISABLED BIT(0)
> > @@ -375,6 +376,18 @@ static int asus_wmi_input_init(struct asus_wmi *asus)
> > }
> > }
> > + if (asus->driver->quirks->use_lid_flip_devid) {
> > + result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_LID_FLIP);
> > + if (result >= 0) {
> > + input_set_capability(asus->inputdev, EV_SW, SW_TABLET_MODE);
> > + input_report_switch(asus->inputdev, SW_TABLET_MODE, result);
> > + } else if (result == -ENODEV) {
> > + pr_err("This device has lid_flip quirk but got ENODEV checking it. This is a bug.");
> > + } else {
> > + pr_err("Error checking for lid-flip: %d\n", result);
> > + }
> > + }
> > +
> > err = input_register_device(asus->inputdev);
> > if (err)
> > goto err_free_dev;
> > @@ -2127,6 +2140,16 @@ static void asus_wmi_handle_event_code(int code, struct asus_wmi *asus)
> > return;
> > }
> > + if (asus->driver->quirks->use_lid_flip_devid && code == NOTIFY_LID_FLIP) {
> > + result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_LID_FLIP);
> > +
> > + if (result >= 0) {
> > + input_report_switch(asus->inputdev, SW_TABLET_MODE, result);
> > + input_sync(asus->inputdev);
> > + }
> > + return;
> > + }
> > +
> > if (asus->fan_boost_mode_available && code == NOTIFY_KBD_FBM) {
> > fan_boost_mode_switch_next(asus);
> > return;
> > diff --git a/drivers/platform/x86/asus-wmi.h b/drivers/platform/x86/asus-wmi.h
> > index 1a95c172f94b..b302415bf1d9 100644
> > --- a/drivers/platform/x86/asus-wmi.h
> > +++ b/drivers/platform/x86/asus-wmi.h
> > @@ -34,6 +34,7 @@ struct quirk_entry {
> > bool wmi_backlight_set_devstate;
> > bool wmi_force_als_set;
> > bool use_kbd_dock_devid;
> > + bool use_lid_flip_devid;
> > int wapf;
> > /*
> > * For machines with AMD graphic chips, it will send out WMI event
> > diff --git a/include/linux/platform_data/x86/asus-wmi.h b/include/linux/platform_data/x86/asus-wmi.h
> > index 897b8332a39f..2f274cf52805 100644
> > --- a/include/linux/platform_data/x86/asus-wmi.h
> > +++ b/include/linux/platform_data/x86/asus-wmi.h
> > @@ -62,6 +62,7 @@
> > /* Misc */
> > #define ASUS_WMI_DEVID_CAMERA 0x00060013
> > +#define ASUS_WMI_DEVID_LID_FLIP 0x00060062
> > /* Storage */
> > #define ASUS_WMI_DEVID_CARDREADER 0x00080013
> >
>
> Otherwise the patch looks good to me, thank you for the patch.
>
> Regards,
>
> Hans
>
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