linux-kernel - [PATCH RESENT] Input: elan_i2c

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Date:	Fri, 17 Jul 2015 14:49:39 -0400
From:	Benjamin Tissoires <benjamin.tissoires@...hat.com>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Jiri Kosina <jkosina@...e.cz>, Duson Lin <dusonlin@....com.tw>
Cc:	Alessio Treglia <alessio@...ian.org>, linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH RESENT] Input: elan_i2c - enable ELAN0600 acpi panels

ELAN0600 seems to work just fine in mouse emulation mode through i2c-hid,
but to have full raw touch support we need to register it in elan_i2c.ko

Reported-and-tested-by: Alessio Treglia <alessio@...ian.org>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@...hat.com>
---

Hi,

well, last discussion ended up that the patch was the right solution, so
I am resending it now to get Jiri's ACK so Dmitry will be able to take it.

Just for the sake of it, I double checked the Elan 0x0401 (a i2c-hid device
which might be working with elan_i2c with some tweaks), which I have some
debug logs, and I don't think we will be able to communicate and enable
the raw reporting through HID. So sadly, yes, we need to blacklist in HID 
and enable in elan_i2c.

Cheers,
Benjamin

 drivers/hid/hid-core.c              | 1 +
 drivers/input/mouse/elan_i2c_core.c | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 157c627..279898c 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -2267,6 +2267,7 @@ static const struct hid_device_id hid_ignore_list[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x0004) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x000a) },
+	{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, 0x0400) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC4UM) },
diff --git a/drivers/input/mouse/elan_i2c_core.c b/drivers/input/mouse/elan_i2c_core.c
index 62641f2..c285ff3 100644
--- a/drivers/input/mouse/elan_i2c_core.c
+++ b/drivers/input/mouse/elan_i2c_core.c
@@ -1167,6 +1167,7 @@ MODULE_DEVICE_TABLE(i2c, elan_id);
 #ifdef CONFIG_ACPI
 static const struct acpi_device_id elan_acpi_id[] = {
 	{ "ELAN0000", 0 },
+	{ "ELAN0600", 0 },
 	{ }
 };
 MODULE_DEVICE_TABLE(acpi, elan_acpi_id);
-- 
2.4.3

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