platform/x86: silead_dmi: Add entry for Insyde 7W tablets

Add an entry providing the necessary info to make the touchscreen work
on various tablets based on the Insyde 7W whitebox tablet.

This has been tested on a DEXP Ursus 7W tablet.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>

drivers/platform/x86/silead_dmi.c

@@ -53,6 +53,19 @@ static const struct silead_ts_dmi_data jumper_ezpad_mini3_data = {
 	.properties	= jumper_ezpad_mini3_props,
 };
 
+static const struct property_entry dexp_ursus_7w_props[] = {
+	PROPERTY_ENTRY_U32("touchscreen-size-x", 890),
+	PROPERTY_ENTRY_U32("touchscreen-size-y", 630),
+	PROPERTY_ENTRY_STRING("firmware-name", "gsl1686-dexp-ursus-7w.fw"),
+	PROPERTY_ENTRY_U32("silead,max-fingers", 10),
+	{ }
+};
+
+static const struct silead_ts_dmi_data dexp_ursus_7w_data = {
+	.acpi_name	= "MSSL1680:00",
+	.properties	= dexp_ursus_7w_props,
+};
+
 static const struct dmi_system_id silead_ts_dmi_table[] = {
 	{
 		/* CUBE iwork8 Air */
@@ -72,6 +85,14 @@ static const struct dmi_system_id silead_ts_dmi_table[] = {
 			DMI_MATCH(DMI_BIOS_VERSION, "jumperx.T87.KFBNEEA"),
 		},
 	},
+	{
+		/* DEXP Ursus 7W */
+		.driver_data = (void *)&dexp_ursus_7w_data,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "7W"),
+		},
+	},
 	{ },
 };