linux-toradex.git/drivers/input/mouse/elan_i2c_i2c.c, branch v4.9.130 Linux kernel for Apalis and Colibri modules Input: elan_i2c - clear INT before resetting controller 2018-04-13T17:48:06+00:00 KT Liao kt.liao@emc.com.tw 2017-05-25T17:06:21+00:00 969eeef39863b6435ed80da16a2325ceb4137ae6 [ Upstream commit 4b3c7dbbfff0673e8a89575414b864d8b001d3bb ] Some old touchpad FWs need to have interrupt cleared before issuing reset command after updating firmware. We clear interrupt by attempting to read full report from the controller, and discarding any data read. Signed-off-by: KT Liao <kt.liao@emc.com.tw> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
[ Upstream commit 4b3c7dbbfff0673e8a89575414b864d8b001d3bb ]

Some old touchpad FWs need to have interrupt cleared before issuing reset
command after updating firmware. We clear interrupt by attempting to read
full report from the controller, and discarding any data read.

Signed-off-by: KT Liao <kt.liao@emc.com.tw>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Input: elan_i2c - expand maximum product_id form 0xFF to 0xFFFF 2015-09-21T16:32:40+00:00 Duson Lin dusonlin@emc.com.tw 2015-09-21T16:26:46+00:00 ed75a14eb554995c522a3b861d4c86a7eddb2ad7 In order to support more projects in the future, we expand the maximum product_id value form 0xFF to 0xFFFF. Signed-off by: Duson Lin <dusonlin@emc.com.tw> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
In order to support more projects in the future, we expand the
maximum product_id value form 0xFF to 0xFFFF.

Signed-off by: Duson Lin <dusonlin@emc.com.tw>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
 Input: elan_i2c - add support for multi IC type and iap format 2015-06-09T00:12:24+00:00 Duson Lin dusonlin@emc.com.tw 2015-06-08T23:39:35+00:00 12018ac3d679d6a3c6c738ac805797fe4dd43912 In order to support multiple IC types for i2c/smbus protocol, add get ic type command and use this data when checking firmware page count and signature address. Signed-off-by: Duson Lin <dusonlin@emc.com.tw> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
In order to support multiple IC types for i2c/smbus protocol, add get ic
type command and use this data when checking firmware page count and
signature address.

Signed-off-by: Duson Lin <dusonlin@emc.com.tw>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Input: elan_i2c - fix calculating number of x and y traces. 2015-04-20T17:30:09+00:00 Duson Lin dusonlin@emc.com.tw 2015-04-20T17:19:24+00:00 9f423801c9e849df56b37833df895685c9d8a940 According to Elan's firmware engineers we should not be subtracting 1 form the raw number of x and y traces so that the pitch size is correct. For example, if the touchpad x resolution is 2800 and x trace number is 20, the pitch size of x should be 2800/20 = 140, not 2800/19 = 147.36. Signed-off-by: Duson Lin <dusonlin@emc.com.tw> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
According to Elan's firmware engineers we should not be subtracting 1 form
the raw number of x and y traces so that the pitch size is correct. For
example, if the touchpad x resolution is 2800 and x trace number is 20,
the pitch size of x should be 2800/20 = 140, not 2800/19 = 147.36.

Signed-off-by: Duson Lin <dusonlin@emc.com.tw>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Input: elan_i2c - adjust for newer firmware pressure reporting 2015-04-14T17:21:42+00:00 duson dusonlin@emc.com.tw 2015-04-12T23:01:05+00:00 b9bced0eecd77067f4659b90d5ab2fb32485c3e2 Get pressure format flag from firmware to check if we need to normalize pressure data before reporting it. Signed-off-by: Duson Lin <dusonlin@emc.com.tw> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
Get pressure format flag from firmware to check if we need to normalize
pressure data before reporting it.

Signed-off-by: Duson Lin <dusonlin@emc.com.tw>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Input: elan_i2c - return error code when resume fails 2015-03-08T05:11:51+00:00 Duson Lin dusonlin@emc.com.tw 2015-03-08T04:57:54+00:00 b3beed7fe83b077291aa32d1f3006c8480f6344b In order to better diagnose potential issues let's return error to the upper layers when resuming the device fails and also add a few diagnostic messages. Signed-off-by: Duson Lin <dusonlin@emc.com.tw> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
In order to better diagnose potential issues let's return error to the
upper layers when resuming the device fails and also add a few diagnostic
messages.

Signed-off-by: Duson Lin <dusonlin@emc.com.tw>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Input: elan_i2c - verify firmware signature applying it 2015-01-23T17:44:21+00:00 Duson Lin dusonlin@emc.com.tw 2015-01-23T17:35:07+00:00 bb03bf3f8427a38112819061fc8688999ba02f67 To allow for different firmware sizes let's replace the original size check with with checking the signature in the firmware data. Signed-off-by: Duson Lin <dusonlin@emc.com.tw> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
To allow for different firmware sizes let's replace the original size check
with with checking the signature in the firmware data.

Signed-off-by: Duson Lin <dusonlin@emc.com.tw>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Input: add driver for Elan I2C/SMbus touchpad 2014-10-24T20:54:24+00:00 Duson Lin dusonlin@emc.com.tw 2014-10-03T20:24:27+00:00 6696777c6506fa52b2a0282121195843ed855be6 This driver supports Elan I2C/SMbus touchpads found in some laptops and also in many Chromebooks. Signed-off-by: Duson Lin <dusonlin@emc.com.tw> Reviewed-by: Benson Leung <bleung@chromium.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
This driver supports Elan I2C/SMbus touchpads found in some laptops and
also in many Chromebooks.

Signed-off-by: Duson Lin <dusonlin@emc.com.tw>
Reviewed-by: Benson Leung <bleung@chromium.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>