linux-kernel - [PATCH v1 2/2] HID: i2c-hid: elan: Add ili2900 timing

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Date: Thu,  9 May 2024 14:43:36 +0800
From: Zhaoxiong Lv <lvzhaoxiong@...qin.corp-partner.google.com>
To: dmitry.torokhov@...il.com,
	robh@...nel.org,
	krzysztof.kozlowski+dt@...aro.org,
	conor+dt@...nel.org,
	jikos@...nel.org,
	benjamin.tissoires@...hat.co,
	dianders@...gle.com,
	hsinyi@...gle.com
Cc: dri-devel@...ts.freedesktop.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	lvzhaoxiong <lvzhaoxiong@...qin.corp-partner.google.com>
Subject: [PATCH v1 2/2] HID: i2c-hid: elan: Add ili2900 timing

From: lvzhaoxiong <lvzhaoxiong@...qin.corp-partner.google.com>

ILI2900 requires reset to pull down time greater than 10ms,
so the configuration post_power_delay_ms is 10, and the chipset
initial time is required to be greater than 100ms,
so the post_gpio_reset_on_delay_ms is set to 100.

Signed-off-by: lvzhaoxiong <lvzhaoxiong@...qin.corp-partner.google.com>
---
 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 5b91fb106cfc..3073620b2dec 100644
--- a/drivers/hid/i2c-hid/i2c-hid-of-elan.c
+++ b/drivers/hid/i2c-hid/i2c-hid-of-elan.c
@@ -137,10 +137,18 @@ static const struct elan_i2c_hid_chip_data ilitek_ili2901_chip_data = {
 	.main_supply_name = "vcc33",
 };
 
+static const struct elan_i2c_hid_chip_data ilitek_ili2900_chip_data = {
+	.post_power_delay_ms = 10,
+	.post_gpio_reset_on_delay_ms = 100,
+	.hid_descriptor_address = 0x0001,
+	.main_supply_name = NULL,
+};
+
 static const struct of_device_id elan_i2c_hid_of_match[] = {
 	{ .compatible = "elan,ekth6915", .data = &elan_ekth6915_chip_data },
 	{ .compatible = "ilitek,ili9882t", .data = &ilitek_ili9882t_chip_data },
 	{ .compatible = "ilitek,ili2901", .data = &ilitek_ili2901_chip_data },
+	{ .compatible = "ilitek,ili2900", .data = &ilitek_ili2900_chip_data },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, elan_i2c_hid_of_match);
-- 
2.17.1