platform/x86: touchscreen_dmi: Add info for the Goodix GT912 panel of TM800A550L...

BugLink: https://bugs.launchpad.net/bugs/1938340
[ Upstream commit fcd8cf0e3e48f4c66af82c8e799c37cb0cccffe0 ]

The Bay Trail Glavey TM800A550L tablet, which ships with Android installed
from the factory, uses a GT912 touchscreen controller which needs to have
its firmware uploaded by the OS to work (this is a first for a x86 based
device with a Goodix touchscreen controller).

Add a touchscreen_dmi entry for this which specifies the filenames
to use for the firmware and config files needed for this.

Note this matches on a GDIX1001 ACPI HID, while the original DSDT uses
a HID of GODX0911. For the touchscreen to work on these devices a DSDT
override is necessary to fix a missing IRQ and broken GPIO settings in
the ACPI-resources for the touchscreen. This override also changes the
HID to the standard GDIX1001 id typically used for Goodix touchscreens.
The DSDT override is available here:
https://fedorapeople.org/~jwrdegoede/glavey-tm800a550l-dsdt-override/

Reviewed-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20210504185746.175461-5-hdegoede@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

diff --git a/drivers/platform/x86/touchscreen_dmi.c b/drivers/platform/x86/touchscreen_dmi.c
index ebae21b783273d561e3c9fddf80323c429adb699..99260915122c00e101eda9efbaaf1bf34ef1a4a8 100644 (file)
--- a/drivers/platform/x86/touchscreen_dmi.c
+++ b/drivers/platform/x86/touchscreen_dmi.c
@@ -316,6 +316,18 @@ static const struct ts_dmi_data gdix1001_01_upside_down_data = {
        .properties     = gdix1001_upside_down_props,
 };
 
+static const struct property_entry glavey_tm800a550l_props[] = {
+       PROPERTY_ENTRY_STRING("firmware-name", "gt912-glavey-tm800a550l.fw"),
+       PROPERTY_ENTRY_STRING("goodix,config-name", "gt912-glavey-tm800a550l.cfg"),
+       PROPERTY_ENTRY_U32("goodix,main-clk", 54),
+       { }
+};
+
+static const struct ts_dmi_data glavey_tm800a550l_data = {
+       .acpi_name      = "GDIX1001:00",
+       .properties     = glavey_tm800a550l_props,
+};
+
 static const struct property_entry gp_electronic_t701_props[] = {
        PROPERTY_ENTRY_U32("touchscreen-size-x", 960),
        PROPERTY_ENTRY_U32("touchscreen-size-y", 640),
@@ -1012,6 +1024,15 @@ const struct dmi_system_id touchscreen_dmi_table[] = {
                        DMI_MATCH(DMI_PRODUCT_NAME, "eSTAR BEAUTY HD Intel Quad core"),
                },
        },
+       {       /* Glavey TM800A550L */
+               .driver_data = (void *)&glavey_tm800a550l_data,
+               .matches = {
+                       DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
+                       DMI_MATCH(DMI_BOARD_NAME, "Aptio CRB"),
+                       /* Above strings are too generic, also match on BIOS version */
+                       DMI_MATCH(DMI_BIOS_VERSION, "ZY-8-BI-PX4S70VTR400-X423B-005-D"),
+               },
+       },
        {
                /* GP-electronic T701 */
                .driver_data = (void *)&gp_electronic_t701_data,