linux-toradex.git/drivers/hid/hid-rmi.c, branch v4.4.51

HID: hid-input: allow input_configured callback return errors

2015-11-05T17:51:50+00:00

When configuring input device via input_configured callback we may
encounter errors (for example input_mt_init_slots() may fail). Instead
of continuing with half-initialized input device let's allow driver
indicate failures.

Signed-off-by: Jaikumar Ganesh 
Signed-off-by: Arve Hjønnevåg 
Reviewed-by: Benjamin Tissoires 
Reviewed-by: David Herrmann 
Acked-by: Nikolai Kondrashov 
Acked-by: Andrew Duggan 
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Jiri Kosina

HID: rmi: Set F01 interrupt enable register when not set

2015-07-17T09:29:53+00:00

A firmware bug in some touchpads causes the F01 interrupt enable register
to be cleared on reset. This register controls which RMI functions generate
interrupts and when it is cleared, the touchpad stops reporting all data.
This patch looks for the cleared F01 control register and writes the
correct value based on interrupt mask computed while scanning the PDT.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=91102
Signed-off-by: Andrew Duggan 
Signed-off-by: Jiri Kosina

HID: rmi: Write updated F11 control registers after reset

2015-07-13T11:13:56+00:00

When a device is reset the values of control registers will be reset to
the defaults. This patch reapplies the control register values set for F11
by the driver.

Signed-off-by: Andrew Duggan 
Tested-by: Gabriele Mazzotta 
Signed-off-by: Jiri Kosina

HID: rmi: Disable scanning if the device is not a wake source

2015-07-09T12:24:51+00:00

Some touchpads are configured with firmware which continues to scan for
fingers at a minimal scan rate even after receiving the HID power sleep
command. This allows a finger touching the touchpad to genrate a wake
event. This patch ensures that scanning is disabled if the touchpad is
not a wake source and ensures scanning is enabled on resume.

Signed-off-by: Andrew Duggan 
Signed-off-by: Jiri Kosina

Merge branches 'for-4.2/i2c-hid', 'for-4.2/lenovo', 'for-4.2/plantronics', 'for-4.2/rmi', 'for-4.2/sensor-hub', 'for-4.2/sjoy', 'for-4.2/sony' and 'for-4.2/wacom' into for-linus

2015-06-22T14:23:43+00:00

Conflicts:
	drivers/hid/wacom_wac.c

HID: rmi: Disable populating F30 when the touchpad has physical buttons

2015-06-16T21:40:02+00:00

Physical buttons do not use F30 to report their state and in some cases the
data reported in F30 is incorrect and inconsistent with what is reported by
the HID descriptor. When physical buttons are present, ignore F30 and let
hid-input report buttons based on what is defined in the HID descriptor.

Signed-off-by: Andrew Duggan 
Reviewed-by: Benjamin Tissoires 
Signed-off-by: Jiri Kosina

HID: rmi: fix some harmless BIT() mistakes

2015-05-18T09:22:53+00:00

These defines are used like this:

	if (!(test_bit(RMI_STARTED, &hdata->flags)))

So the intent was to use bits 0, 1 and 2 but because of the extra BIT()
shifts we're actually using 1, 2 and 4.  It's harmless because it's done
consistently but static checkers will complain.

Fixes: 9fb6bf02e3ad ('HID: rmi: introduce RMI driver for Synaptics touchpads')
Signed-off-by: Dan Carpenter 
Reviewed-by: Benjamin Tissoires 
Signed-off-by: Jiri Kosina

HID: rmi: disable palm detect gesture when present

2015-02-25T14:26:44+00:00

A touchpad may have firmware based palm detection code enabled which
suppresses 2D data from being reported when the firmware believes a palm is
on the touchpad. This functionality is meant to be used in mouse mode without
a driver. When a driver is present, the driver can do a better job of
determining if a contact is a palm. If this gesture is enabled on a touchpad
operating in rmi mode then the firmware will not properly clear the palm detect
interrupt, causing the touchpad to interrupt indefinately. This patch disables
the palm detect gesture when the touchpad is operating in rmi mode.

Signed-off-by: Andrew Duggan 
Tested-by: Gabriele Mazzotta 
Signed-off-by: Jiri Kosina

HID: rmi: disable dribble packets on Synaptics touchpads

2015-02-25T14:26:44+00:00

When a finger is lifted from a Synaptics touchpad the firmware will continue
to interrupts for up to a second. These additional interrupts are know and
dribble interrupts. Since the data read from the touchpad does not change
the input subsystem only reports a single event. This makes the servicing of
dribble interrupts on Linux unnecessary. This patch simply disables dribble
interupts when configuring the touchpad.

Signed-off-by: Andrew Duggan 
Tested-by: Gabriele Mazzotta 
Signed-off-by: Jiri Kosina

HID: rmi: Add functions for writing to registers

2015-02-25T14:26:43+00:00

Writing to registers is needed for setting configuration parameters.

Signed-off-by: Andrew Duggan 
Tested-by: Gabriele Mazzotta 
Signed-off-by: Jiri Kosina