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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Bastien Nocera <hadess@hadess.net>,
        Hans de Goede <hdegoede@redhat.com>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.10 175/593] platform/x86: touchscreen_dmi: Add info for the Goodix GT912 panel of TM800A550L tablets
Date:   Mon, 12 Jul 2021 08:05:35 +0200
Message-Id: <20210712060902.264623669@linuxfoundation.org>
In-Reply-To: <20210712060843.180606720@linuxfoundation.org>
References: <20210712060843.180606720@linuxfoundation.org>
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From: Hans de Goede <hdegoede@redhat.com>

[ 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>
---
 drivers/platform/x86/touchscreen_dmi.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/drivers/platform/x86/touchscreen_dmi.c b/drivers/platform/x86/touchscreen_dmi.c
index ebae21b78327..99260915122c 100644
--- 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,
-- 
2.30.2