linux-toradex.git/drivers/input/mouse/cyapa.c, branch v4.6-rc7 Linux kernel for Apalis and Colibri modules Input: cyapa - fix for losing events during device power transitions 2016-03-04T19:32:13+00:00 Dudley Du dudl@cypress.com 2016-03-04T19:23:09+00:00 3cd47869431d7402d0613cf0f7fbb392f2b97565 When changing the scan rate as part of runtime-resume process we may lose some of the events, because: 1) for gen3 trackpads, the driver must msleep() some time to ensure that the device is ready to accept next command; 2) for gen5 and later trackpads, the queue dumping function will simply ignore the events when waiting for the set power mode command response. The solution is to keep polling and report those valid events when the set power mode command is in progress. Signed-off-by: Dudley Du <dudl@cypress.com> Tested-by: Jeremiah Mahler <jmmahler@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
When changing the scan rate as part of runtime-resume process we may lose
some of the events, because:

1) for gen3 trackpads, the driver must msleep() some time to ensure that
the device is ready to accept next command;

2) for gen5 and later trackpads, the queue dumping function will simply
ignore the events when waiting for the set power mode command response.

The solution is to keep polling and report those valid events when the set
power mode command is in progress.

Signed-off-by: Dudley Du <dudl@cypress.com>
Tested-by: Jeremiah Mahler <jmmahler@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
 Input: cyapa - introduce device tree binding 2015-07-30T18:33:59+00:00 Dudley Du dudl@cypress.com 2015-07-30T18:24:16+00:00 ddbb299db0e040aca8e26361ab778224eeacf9d3 Add device tree support for Cypress trackpad devices. Signed-off-by: Dudley Du <dudl@cypress.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
Add device tree support for  Cypress trackpad devices.

Signed-off-by: Dudley Du <dudl@cypress.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
 Input: cyapa - add regulator vcc support 2015-07-30T18:33:59+00:00 Dudley Du dudl@cypress.com 2015-07-30T18:19:18+00:00 36e9615bd70dc8cd5d7d4831943f788f5231350f We need to power up the chip before we can initialize it. On systems that delegate task of powering up regulators to firmware we assume that we'll be simply given a dummy regulator. Signed-off-by: Dudley Du <dudl@cypress.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
We need to power up the chip before we can initialize it.

On systems that delegate task of powering up regulators to firmware we
assume that we'll be simply given a dummy regulator.

Signed-off-by: Dudley Du <dudl@cypress.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
 Input: cyapa - add ACPI HID CYAP0002 for Gen6 devices 2015-07-24T00:34:06+00:00 Dudley Du dudl@cypress.com 2015-07-21T00:15:46+00:00 ce2ae9e3e6a152866a33972c966f8315aab2cb1d Add CYTP0002 to the list of ACPI HIDs recognized by the driver. Signed-off-by: Dudley Du <dudl@cypress.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
Add CYTP0002 to the list of ACPI HIDs recognized by the driver.

Signed-off-by: Dudley Du <dudl@cypress.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
 Input: cyapa - fully support runtime suspend power management 2015-07-24T00:34:05+00:00 Dudley Du dudl@cypress.com 2015-07-21T00:09:59+00:00 757cae5a6f0ac1c61ce149a066377a15d1ed881f Fix the the runtime suspend power management not working issue when system starts up and before user touches the trackpad device. TEST=test on Chromebook. Signed-off-by: Dudley Du <dudl@cypress.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
Fix the the runtime suspend power management not working issue when system
starts up and before user touches the trackpad device.
TEST=test on Chromebook.

Signed-off-by: Dudley Du <dudl@cypress.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
 Input: cyapa - add proximity support for gen5 and gen6 modules 2015-07-24T00:34:05+00:00 Dudley Du dudl@cypress.com 2015-07-20T23:57:53+00:00 945525ee607471630d07c309e036ae4a53abe37f Gen5 and Gen6 trackpad devices are able to detect and report object proximity data/events, add this function support in the cyapa driver through the ABS_DISTANCE event. Signed-off-by: Dudley Du <dudl@cypress.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
Gen5 and Gen6 trackpad devices are able to detect and report object
proximity data/events, add this function support in the cyapa driver
through the ABS_DISTANCE event.

Signed-off-by: Dudley Du <dudl@cypress.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
 Input: cyapa - add gen6 device module support 2015-07-24T00:34:04+00:00 Dudley Du dudl@cypress.com 2015-07-20T23:53:30+00:00 c2c06c41f700b544c9331caf71c67edb5d131257 Based on the cyapa core, add support for basic functionality of the gen6 trackpad devices. The driver can automatically determine what protocol (gen3, gen5, or gen6) should be used with the attached trackpad device. Signed-off-by: Dudley Du <dudl@cypress.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
Based on the cyapa core, add support for basic functionality of the gen6
trackpad devices. The driver can automatically determine what protocol
(gen3, gen5, or gen6) should be used with the attached trackpad device.

Signed-off-by: Dudley Du <dudl@cypress.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
 Input: cyapa - rename 'gen5' to 'pip' for chared code 2015-07-24T00:34:03+00:00 Dudley Du dudl@cypress.com 2015-07-20T23:49:06+00:00 94897619bf24aca6b37cfa847399a56cf40eab66 Change 'gen5' to 'pip' for all macros, variables and functions that are shared between gen5 and gen6 modules to make naming more clear and readable. Also fix a few spelling errors. Signed-off-by: Dudley Du <dudl@cypress.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
Change 'gen5' to 'pip' for all macros, variables and functions that are
shared between gen5 and gen6 modules to make naming more clear and
readable.

Also fix a few spelling errors.

Signed-off-by: Dudley Du <dudl@cypress.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
 Input: drop owner assignment from i2c_driver 2015-07-17T23:57:00+00:00 Krzysztof Kozlowski k.kozlowski@samsung.com 2015-07-17T23:44:05+00:00 800e3b9a68011c4124f380d50e2117523c41a843 i2c_driver does not need to set an owner because i2c_register_driver() will set it. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
i2c_driver does not need to set an owner because i2c_register_driver()
will set it.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
 Input: cyapa - fix setting suspend scan rate 2015-04-20T17:30:09+00:00 Dudley Du dudl@cypress.com 2015-04-20T17:00:05+00:00 a333a03ce969c18f97f1eafa3dc1072caa33454e The suspend scan rate value should not exceed 1000, unfortunately when implementing the limit we used max_t instead of min_t, causing the value to be at least 1000. Signed-off-by: Dudley Du <dudl@cypress.com> Reviewed-by: Benson Leung <bleung@chromium.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
The suspend scan rate value should not exceed 1000, unfortunately when
implementing the limit we used max_t instead of min_t, causing the value to
be at least 1000.

Signed-off-by: Dudley Du <dudl@cypress.com>
Reviewed-by: Benson Leung <bleung@chromium.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>