[PATCH AUTOSEL 4.19 24/34] platform/x86: asus-wmi: Only Tell EC the OS will handle display hotkeys from asus_nb_wmi

[Sasha Levin]

From: Hans de Goede <hdego...@redhat.com>

[ Upstream commit 401fee8195d401b2b94dee57383f627050724d5b ]

Commit 78f3ac76d9e5 ("platform/x86: asus-wmi: Tell the EC the OS will
handle the display off hotkey") causes the backlight to be permanently off
on various EeePC laptop models using the eeepc-wmi driver (Asus EeePC
1015BX, Asus EeePC 1025C).

The asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 2, NULL) call added
by that commit is made conditional in this commit and only enabled in
the quirk_entry structs in the asus-nb-wmi driver fixing the broken
display / backlight on various EeePC laptop models.

Cc: João Paulo Rechi Vita <jprv...@endlessm.com>
Fixes: 78f3ac76d9e5 ("platform/x86: asus-wmi: Tell the EC the OS will handle 
the display off hotkey")
Signed-off-by: Hans de Goede <hdego...@redhat.com>
Signed-off-by: Andy Shevchenko <andriy.shevche...@linux.intel.com>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 drivers/platform/x86/asus-nb-wmi.c | 8 ++++++++
 drivers/platform/x86/asus-wmi.c    | 2 +-
 drivers/platform/x86/asus-wmi.h    | 1 +
 3 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/x86/asus-nb-wmi.c 
b/drivers/platform/x86/asus-nb-wmi.c
index b6f2ff95c3ed..59f3a37a44d7 100644
--- a/drivers/platform/x86/asus-nb-wmi.c
+++ b/drivers/platform/x86/asus-nb-wmi.c
@@ -78,10 +78,12 @@ static bool asus_q500a_i8042_filter(unsigned char data, 
unsigned char str,
 
 static struct quirk_entry quirk_asus_unknown = {
        .wapf = 0,
+       .wmi_backlight_set_devstate = true,
 };
 
 static struct quirk_entry quirk_asus_q500a = {
        .i8042_filter = asus_q500a_i8042_filter,
+       .wmi_backlight_set_devstate = true,
 };
 
 /*
@@ -92,26 +94,32 @@ static struct quirk_entry quirk_asus_q500a = {
 static struct quirk_entry quirk_asus_x55u = {
        .wapf = 4,
        .wmi_backlight_power = true,
+       .wmi_backlight_set_devstate = true,
        .no_display_toggle = true,
 };
 
 static struct quirk_entry quirk_asus_wapf4 = {
        .wapf = 4,
+       .wmi_backlight_set_devstate = true,
 };
 
 static struct quirk_entry quirk_asus_x200ca = {
        .wapf = 2,
+       .wmi_backlight_set_devstate = true,
 };
 
 static struct quirk_entry quirk_asus_ux303ub = {
        .wmi_backlight_native = true,
+       .wmi_backlight_set_devstate = true,
 };
 
 static struct quirk_entry quirk_asus_x550lb = {
+       .wmi_backlight_set_devstate = true,
        .xusb2pr = 0x01D9,
 };
 
 static struct quirk_entry quirk_asus_forceals = {
+       .wmi_backlight_set_devstate = true,
        .wmi_force_als_set = true,
 };
 
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index db3556dc90d1..22eac449d3a3 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -2231,7 +2231,7 @@ static int asus_wmi_add(struct platform_device *pdev)
                err = asus_wmi_backlight_init(asus);
                if (err && err != -ENODEV)
                        goto fail_backlight;
-       } else
+       } else if (asus->driver->quirks->wmi_backlight_set_devstate)
                err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT, 2, NULL);
 
        status = wmi_install_notify_handler(asus->driver->event_guid,
diff --git a/drivers/platform/x86/asus-wmi.h b/drivers/platform/x86/asus-wmi.h
index 6c1311f4b04d..57a79bddb286 100644
--- a/drivers/platform/x86/asus-wmi.h
+++ b/drivers/platform/x86/asus-wmi.h
@@ -44,6 +44,7 @@ struct quirk_entry {
        bool store_backlight_power;
        bool wmi_backlight_power;
        bool wmi_backlight_native;
+       bool wmi_backlight_set_devstate;
        bool wmi_force_als_set;
        int wapf;
        /*
-- 
2.20.1