Patch "platform/x86: toshiba_acpi: Add quirk for buttons on Z830" has been added to the 6.6-stable tree

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This is a note to let you know that I've just added the patch titled

    platform/x86: toshiba_acpi: Add quirk for buttons on Z830

to the 6.6-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     platform-x86-toshiba_acpi-add-quirk-for-buttons-on-z.patch
and it can be found in the queue-6.6 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 8e9cd55ec74c2a8356a104184ce0816aca35881a
Author: Arvid Norlander <lkml@xxxxxxxxx>
Date:   Wed Jan 31 12:16:41 2024 +0100

    platform/x86: toshiba_acpi: Add quirk for buttons on Z830
    
    [ Upstream commit 23f1d8b47d125dcd8c1ec62a91164e6bc5d691d0 ]
    
    The Z830 has some buttons that will only work properly as "quickstart"
    buttons. To enable them in that mode, a value between 1 and 7 must be
    used for HCI_HOTKEY_EVENT. Windows uses 0x5 on this laptop so use that for
    maximum predictability and compatibility.
    
    As there is not yet a known way of auto detection, this patch uses a DMI
    quirk table. A module parameter is exposed to allow setting this on other
    models for testing.
    
    Signed-off-by: Arvid Norlander <lkml@xxxxxxxxx>
    Tested-by: Hans de Goede <hdegoede@xxxxxxxxxx>
    Reviewed-by: Hans de Goede <hdegoede@xxxxxxxxxx>
    Link: https://lore.kernel.org/r/20240131111641.4418-3-W_Armin@xxxxxx
    Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c
index 291f14ef67024..2a5a651235fe6 100644
--- a/drivers/platform/x86/toshiba_acpi.c
+++ b/drivers/platform/x86/toshiba_acpi.c
@@ -57,6 +57,11 @@ module_param(turn_on_panel_on_resume, int, 0644);
 MODULE_PARM_DESC(turn_on_panel_on_resume,
 	"Call HCI_PANEL_POWER_ON on resume (-1 = auto, 0 = no, 1 = yes");
 
+static int hci_hotkey_quickstart = -1;
+module_param(hci_hotkey_quickstart, int, 0644);
+MODULE_PARM_DESC(hci_hotkey_quickstart,
+		 "Call HCI_HOTKEY_EVENT with value 0x5 for quickstart button support (-1 = auto, 0 = no, 1 = yes");
+
 #define TOSHIBA_WMI_EVENT_GUID "59142400-C6A3-40FA-BADB-8A2652834100"
 
 /* Scan code for Fn key on TOS1900 models */
@@ -136,6 +141,7 @@ MODULE_PARM_DESC(turn_on_panel_on_resume,
 #define HCI_ACCEL_MASK			0x7fff
 #define HCI_ACCEL_DIRECTION_MASK	0x8000
 #define HCI_HOTKEY_DISABLE		0x0b
+#define HCI_HOTKEY_ENABLE_QUICKSTART	0x05
 #define HCI_HOTKEY_ENABLE		0x09
 #define HCI_HOTKEY_SPECIAL_FUNCTIONS	0x10
 #define HCI_LCD_BRIGHTNESS_BITS		3
@@ -2730,10 +2736,15 @@ static int toshiba_acpi_enable_hotkeys(struct toshiba_acpi_dev *dev)
 		return -ENODEV;
 
 	/*
+	 * Enable quickstart buttons if supported.
+	 *
 	 * Enable the "Special Functions" mode only if they are
 	 * supported and if they are activated.
 	 */
-	if (dev->kbd_function_keys_supported && dev->special_functions)
+	if (hci_hotkey_quickstart)
+		result = hci_write(dev, HCI_HOTKEY_EVENT,
+				   HCI_HOTKEY_ENABLE_QUICKSTART);
+	else if (dev->kbd_function_keys_supported && dev->special_functions)
 		result = hci_write(dev, HCI_HOTKEY_EVENT,
 				   HCI_HOTKEY_SPECIAL_FUNCTIONS);
 	else
@@ -3257,7 +3268,14 @@ static const char *find_hci_method(acpi_handle handle)
  * works. toshiba_acpi_resume() uses HCI_PANEL_POWER_ON to avoid changing
  * the configured brightness level.
  */
-static const struct dmi_system_id turn_on_panel_on_resume_dmi_ids[] = {
+#define QUIRK_TURN_ON_PANEL_ON_RESUME		BIT(0)
+/*
+ * Some Toshibas use "quickstart" keys. On these, HCI_HOTKEY_EVENT must use
+ * the value HCI_HOTKEY_ENABLE_QUICKSTART.
+ */
+#define QUIRK_HCI_HOTKEY_QUICKSTART		BIT(1)
+
+static const struct dmi_system_id toshiba_dmi_quirks[] = {
 	{
 	 /* Toshiba Portégé R700 */
 	 /* https://bugzilla.kernel.org/show_bug.cgi?id=21012 */
@@ -3265,6 +3283,7 @@ static const struct dmi_system_id turn_on_panel_on_resume_dmi_ids[] = {
 		DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 		DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE R700"),
 		},
+	 .driver_data = (void *)QUIRK_TURN_ON_PANEL_ON_RESUME,
 	},
 	{
 	 /* Toshiba Satellite/Portégé R830 */
@@ -3274,6 +3293,7 @@ static const struct dmi_system_id turn_on_panel_on_resume_dmi_ids[] = {
 		DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 		DMI_MATCH(DMI_PRODUCT_NAME, "R830"),
 		},
+	 .driver_data = (void *)QUIRK_TURN_ON_PANEL_ON_RESUME,
 	},
 	{
 	 /* Toshiba Satellite/Portégé Z830 */
@@ -3281,6 +3301,7 @@ static const struct dmi_system_id turn_on_panel_on_resume_dmi_ids[] = {
 		DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 		DMI_MATCH(DMI_PRODUCT_NAME, "Z830"),
 		},
+	 .driver_data = (void *)(QUIRK_TURN_ON_PANEL_ON_RESUME | QUIRK_HCI_HOTKEY_QUICKSTART),
 	},
 };
 
@@ -3289,6 +3310,8 @@ static int toshiba_acpi_add(struct acpi_device *acpi_dev)
 	struct toshiba_acpi_dev *dev;
 	const char *hci_method;
 	u32 dummy;
+	const struct dmi_system_id *dmi_id;
+	long quirks = 0;
 	int ret = 0;
 
 	if (toshiba_acpi)
@@ -3441,8 +3464,15 @@ static int toshiba_acpi_add(struct acpi_device *acpi_dev)
 	}
 #endif
 
+	dmi_id = dmi_first_match(toshiba_dmi_quirks);
+	if (dmi_id)
+		quirks = (long)dmi_id->driver_data;
+
 	if (turn_on_panel_on_resume == -1)
-		turn_on_panel_on_resume = dmi_check_system(turn_on_panel_on_resume_dmi_ids);
+		turn_on_panel_on_resume = !!(quirks & QUIRK_TURN_ON_PANEL_ON_RESUME);
+
+	if (hci_hotkey_quickstart == -1)
+		hci_hotkey_quickstart = !!(quirks & QUIRK_HCI_HOTKEY_QUICKSTART);
 
 	toshiba_wwan_available(dev);
 	if (dev->wwan_supported)




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