linux-kernel - [PATCH AUTOSEL 5.14 03/40] platform/x86: touchscreen_dmi: Add info for the Chuwi HiBook (CWI514) tablet

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Date:   Tue, 28 Sep 2021 01:54:47 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Hans de Goede <hdegoede@...hat.com>,
        Sasha Levin <sashal@...nel.org>, mgross@...ux.intel.com,
        linux-input@...r.kernel.org, platform-driver-x86@...r.kernel.org
Subject: [PATCH AUTOSEL 5.14 03/40] platform/x86: touchscreen_dmi: Add info for the Chuwi HiBook (CWI514) tablet

From: Hans de Goede <hdegoede@...hat.com>

[ Upstream commit 3bf1669b0e033c885ebcb1ddc2334088dd125f2d ]

Add touchscreen info for the Chuwi HiBook (CWI514) tablet. This includes
info for getting the firmware directly from the UEFI, so that the user does
not need to manually install the firmware in /lib/firmware/silead.

This change will make the touchscreen on these devices work OOTB,
without requiring any manual setup.

Signed-off-by: Hans de Goede <hdegoede@...hat.com>
Link: https://lore.kernel.org/r/20210905130210.32810-1-hdegoede@redhat.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/platform/x86/touchscreen_dmi.c | 37 ++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/drivers/platform/x86/touchscreen_dmi.c b/drivers/platform/x86/touchscreen_dmi.c
index 0e1451b1d9c6..1f9cb756b103 100644
--- a/drivers/platform/x86/touchscreen_dmi.c
+++ b/drivers/platform/x86/touchscreen_dmi.c
@@ -141,6 +141,33 @@ static const struct ts_dmi_data chuwi_hi10_pro_data = {
 	.properties     = chuwi_hi10_pro_props,
 };
 
+static const struct property_entry chuwi_hibook_props[] = {
+	PROPERTY_ENTRY_U32("touchscreen-min-x", 30),
+	PROPERTY_ENTRY_U32("touchscreen-min-y", 4),
+	PROPERTY_ENTRY_U32("touchscreen-size-x", 1892),
+	PROPERTY_ENTRY_U32("touchscreen-size-y", 1276),
+	PROPERTY_ENTRY_BOOL("touchscreen-inverted-y"),
+	PROPERTY_ENTRY_BOOL("touchscreen-swapped-x-y"),
+	PROPERTY_ENTRY_STRING("firmware-name", "gsl1680-chuwi-hibook.fw"),
+	PROPERTY_ENTRY_U32("silead,max-fingers", 10),
+	PROPERTY_ENTRY_BOOL("silead,home-button"),
+	{ }
+};
+
+static const struct ts_dmi_data chuwi_hibook_data = {
+	.embedded_fw = {
+		.name	= "silead/gsl1680-chuwi-hibook.fw",
+		.prefix = { 0xf0, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00 },
+		.length	= 40392,
+		.sha256	= { 0xf7, 0xc0, 0xe8, 0x5a, 0x6c, 0xf2, 0xeb, 0x8d,
+			    0x12, 0xc4, 0x45, 0xbf, 0x55, 0x13, 0x4c, 0x1a,
+			    0x13, 0x04, 0x31, 0x08, 0x65, 0x73, 0xf7, 0xa8,
+			    0x1b, 0x7d, 0x59, 0xc9, 0xe6, 0x97, 0xf7, 0x38 },
+	},
+	.acpi_name      = "MSSL0017:00",
+	.properties     = chuwi_hibook_props,
+};
+
 static const struct property_entry chuwi_vi8_props[] = {
 	PROPERTY_ENTRY_U32("touchscreen-min-x", 4),
 	PROPERTY_ENTRY_U32("touchscreen-min-y", 6),
@@ -979,6 +1006,16 @@ const struct dmi_system_id touchscreen_dmi_table[] = {
 			DMI_MATCH(DMI_BOARD_NAME, "Cherry Trail CR"),
 		},
 	},
+	{
+		/* Chuwi HiBook (CWI514) */
+		.driver_data = (void *)&chuwi_hibook_data,
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "Hampoo"),
+			DMI_MATCH(DMI_BOARD_NAME, "Cherry Trail CR"),
+			/* Above matches are too generic, add bios-date match */
+			DMI_MATCH(DMI_BIOS_DATE, "05/07/2016"),
+		},
+	},
 	{
 		/* Chuwi Vi8 (CWI506) */
 		.driver_data = (void *)&chuwi_vi8_data,
-- 
2.33.0