lkml.org 
[lkml]   [2021]   [Feb]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 5.10 21/57] platform/x86: touchscreen_dmi: Add swap-x-y quirk for Goodix touchscreen on Estar Beauty HD tablet
Date
From: Hans de Goede <hdegoede@redhat.com>

[ Upstream commit 46c54cf2706122c37497896d56d67b0c0aca2ede ]

The Estar Beauty HD (MID 7316R) tablet uses a Goodix touchscreen,
with the X and Y coordinates swapped compared to the LCD panel.

Add a touchscreen_dmi entry for this adding a "touchscreen-swapped-x-y"
device-property to the i2c-client instantiated for this device before
the driver binds.

This is the first entry of a Goodix touchscreen to touchscreen_dmi.c,
so far DMI quirks for Goodix touchscreen's have been added directly
to drivers/input/touchscreen/goodix.c. Currently there are 3
DMI tables in goodix.c:
1. rotated_screen[] for devices where the touchscreen is rotated
180 degrees vs the LCD panel
2. inverted_x_screen[] for devices where the X axis is inverted
3. nine_bytes_report[] for devices which use a non standard touch
report size

Arguably only 3. really needs to be inside the driver and the other
2 cases are better handled through the generic touchscreen DMI quirk
mechanism from touchscreen_dmi.c, which allows adding device-props to
any i2c-client. Esp. now that goodix.c is using the generic
touchscreen_properties code.

Alternative to the approach from this patch we could add a 4th
dmi_system_id table for devices with swapped-x-y axis to goodix.c,
but that seems undesirable.

Cc: Bastien Nocera <hadess@hadess.net>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20201224135158.10976-1-hdegoede@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/platform/x86/touchscreen_dmi.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)

diff --git a/drivers/platform/x86/touchscreen_dmi.c b/drivers/platform/x86/touchscreen_dmi.c
index 5783139d0a119..c4de932302d6b 100644
--- a/drivers/platform/x86/touchscreen_dmi.c
+++ b/drivers/platform/x86/touchscreen_dmi.c
@@ -263,6 +263,16 @@ static const struct ts_dmi_data digma_citi_e200_data = {
.properties = digma_citi_e200_props,
};

+static const struct property_entry estar_beauty_hd_props[] = {
+ PROPERTY_ENTRY_BOOL("touchscreen-swapped-x-y"),
+ { }
+};
+
+static const struct ts_dmi_data estar_beauty_hd_data = {
+ .acpi_name = "GDIX1001:00",
+ .properties = estar_beauty_hd_props,
+};
+
static const struct property_entry gp_electronic_t701_props[] = {
PROPERTY_ENTRY_U32("touchscreen-size-x", 960),
PROPERTY_ENTRY_U32("touchscreen-size-y", 640),
@@ -942,6 +952,14 @@ const struct dmi_system_id touchscreen_dmi_table[] = {
DMI_MATCH(DMI_BOARD_NAME, "Cherry Trail CR"),
},
},
+ {
+ /* Estar Beauty HD (MID 7316R) */
+ .driver_data = (void *)&estar_beauty_hd_data,
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Estar"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "eSTAR BEAUTY HD Intel Quad core"),
+ },
+ },
{
/* GP-electronic T701 */
.driver_data = (void *)&gp_electronic_t701_data,
--
2.27.0


\
 
 \ /
  Last update: 2021-02-05 23:19    [W:2.049 / U:0.980 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site