linux-kernel - [PATCH v4 2/2] HID: i2c-hid: Add FocalTech FT8112

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Message-Id: <20251113140004.v4.2.I47e9f0b76399e6009854dec06420c20e68e23116@changeid>
Date: Thu, 13 Nov 2025 14:00:56 +0800
From: daniel_peng@...atron.corp-partner.google.com
To: Dmitry Torokhov <dmitry.torokhov@...il.com>,
	linux-input@...r.kernel.org
Cc: LKML <linux-kernel@...r.kernel.org>,
	Daniel Peng <Daniel_Peng@...atron.corp-partner.google.com>,
	Benjamin Tissoires <bentiss@...nel.org>,
	Douglas Anderson <dianders@...omium.org>,
	Jiri Kosina <jikos@...nel.org>,
	Pin-yen Lin <treapking@...omium.org>
Subject: [PATCH v4 2/2] HID: i2c-hid: Add FocalTech FT8112

From: Daniel Peng <Daniel_Peng@...atron.corp-partner.google.com>

Information for touchscreen model HKO/RB116AS01-2 as below:
- HID :FTSC1000
- slave address:0X38
- Interface:HID over I2C
- Touch control lC:FT8112
- I2C ID: PNP0C50

Signed-off-by: Daniel Peng <Daniel_Peng@...atron.corp-partner.google.com>
---

Changes in v4:
- Move change log of v3 under "---" correctly as below 1 item.

- Modified the subject to include the ID of the chip as suggestion only.

 drivers/hid/i2c-hid/i2c-hid-of-elan.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/hid/i2c-hid/i2c-hid-of-elan.c b/drivers/hid/i2c-hid/i2c-hid-of-elan.c
index 0215f217f6d8..b81fcc6ff49e 100644
--- a/drivers/hid/i2c-hid/i2c-hid-of-elan.c
+++ b/drivers/hid/i2c-hid/i2c-hid-of-elan.c
@@ -168,6 +168,13 @@ static const struct elan_i2c_hid_chip_data elan_ekth6a12nay_chip_data = {
 	.power_after_backlight = true,
 };
 
+static const struct elan_i2c_hid_chip_data focaltech_ft8112_chip_data = {
+	.post_power_delay_ms = 10,
+	.post_gpio_reset_on_delay_ms = 150,
+	.hid_descriptor_address = 0x0001,
+	.main_supply_name = "vcc33",
+};
+
 static const struct elan_i2c_hid_chip_data ilitek_ili9882t_chip_data = {
 	.post_power_delay_ms = 1,
 	.post_gpio_reset_on_delay_ms = 200,
@@ -191,6 +198,7 @@ static const struct elan_i2c_hid_chip_data ilitek_ili2901_chip_data = {
 static const struct of_device_id elan_i2c_hid_of_match[] = {
 	{ .compatible = "elan,ekth6915", .data = &elan_ekth6915_chip_data },
 	{ .compatible = "elan,ekth6a12nay", .data = &elan_ekth6a12nay_chip_data },
+	{ .compatible = "focaltech,ft8112", .data = &focaltech_ft8112_chip_data },
 	{ .compatible = "ilitek,ili9882t", .data = &ilitek_ili9882t_chip_data },
 	{ .compatible = "ilitek,ili2901", .data = &ilitek_ili2901_chip_data },
 	{ }
-- 
2.34.1