Commit Graph

10 Commits

Author SHA1 Message Date
Dudley Du 3cd4786943 Input: cyapa - fix for losing events during device power transitions
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>
2016-03-04 11:32:13 -08:00
Dudley Du 36e9615bd7 Input: cyapa - add regulator vcc support
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>
2015-07-30 11:33:59 -07:00
Dudley Du 757cae5a6f Input: cyapa - fully support runtime suspend power management
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>
2015-07-23 17:34:05 -07:00
Dudley Du 945525ee60 Input: cyapa - add proximity support for gen5 and gen6 modules
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>
2015-07-23 17:34:05 -07:00
Dudley Du c2c06c41f7 Input: cyapa - add gen6 device module support
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>
2015-07-23 17:34:04 -07:00
Dudley Du 94897619bf Input: cyapa - rename 'gen5' to 'pip' for chared code
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>
2015-07-23 17:34:03 -07:00
Dudley Du 6499d390a1 Input: cyapa - add gen5 trackpad read baseline support
Add read baseline function support for gen5 trackpad device, it can be used
through sysfs baseline interface.

Signed-off-by: Dudley Du <dudl@cypress.com>
Tested-by: Jeremiah Mahler <jmmahler@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-01-18 00:10:32 -08:00
Dudley Du 672865080a Input: cyapa - add runtime power management support
This change implements runtime PM support in the driver and adds
runtime_suspend_scanrate_ms power management interface in device's power
group, so users or applications can control the runtime power management
strategy of trackpad device according to their requirements.

Signed-off-by: Dudley Du <dudl@cypress.com>
Tested-by: Jeremiah Mahler <jmmahler@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-01-18 00:10:29 -08:00
Dudley Du 6972a85960 Input: cyapa - add gen5 trackpad device basic functions support
This change adds support for Gen5 Cypress trackpads. The driver detects
generation of the device at probe time and automatically selects
appropriate protocol.

Signed-off-by: Dudley Du <dudl@cypress.com>
Tested-by: Jeremiah Mahler <jmmahler@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-01-18 00:10:28 -08:00
Dudley Du 9f1cd85751 Input: cyapa - re-design driver to support multi-trackpad in one driver
In order to support multiple different chipsets and communication protocols
trackpad devices in one cyapa driver, the new cyapa driver is re-designed
with one cyapa driver core and multiple device specific functions component.
The cyapa driver core is contained in this patch, it supplies basic functions
that working with kernel and input subsystem, and also supplies the interfaces
that the specific devices' component can connect and work together with as
one driver.

Signed-off-by: Dudley Du <dudl@cypress.com>
Tested-by: Jeremiah Mahler <jmmahler@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-01-18 00:10:28 -08:00