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  1. 18 12月, 2015 2 次提交
    • K
      Input: goodix - add axis swapping and axis inversion support · ad48cf5e
      由 Karsten Merker 提交于 
      Implement support for the following device-tree and ACPI 5.1 DSD
properties in the goodix touchscreen driver:

 - touchscreen-inverted-x:  X axis is inverted (boolean)
 - touchscreen-inverted-y:  Y axis is inverted (boolean)
 - touchscreen-swapped-x-y: X and Y axis are swapped (boolean)

These are necessary on tablets which have a display in portrait
format while the touchscreen is in landscape format, such as e.g.
the MSI Primo 81.
Signed-off-by: NKarsten Merker <merker@debian.org>
Tested-by: NBastien Nocera <hadess@hadess.net>
Tested-by: Irina Tirdea <irina.tirdea@intel.com> (with ACPI DSD properties)
Tested-by: Aleksei Mamlin <mamlinav@gmail.com> (with device-tree properties)
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>
      ad48cf5e
    • I
      Input: goodix - reset device at init · ec6e1b40
      由 Irina Tirdea 提交于 
      After power on, it is recommended that the driver resets the device.
The reset procedure timing is described in the datasheet and is used
at device init (before writing device configuration) and
for power management. It is a sequence of setting the interrupt
and reset pins high/low at specific timing intervals. This procedure
also includes setting the slave address to the one specified in the
ACPI/device tree.

This is based on Goodix datasheets for GT911 and GT9271 and on Goodix
driver gt9xx.c for Android (publicly available in Android kernel
trees for various devices).

For reset the driver needs to control the interrupt and
reset gpio pins (configured through ACPI/device tree). For devices
that do not have the gpio pins properly declared, the functionality
depending on these pins will not be available, but the device can still
be used with basic functionality.

For both device tree and ACPI, the interrupt gpio pin configuration is
read from the "irq-gpios" property and the reset pin configuration is
read from the "reset-gpios" property. For ACPI 5.1, named properties
can be specified using the _DSD section. This functionality will not be
available for devices that use indexed gpio pins declared in the _CRS
section (we need to provide backward compatibility with devices
that do not support using the interrupt gpio pin as output).

For ACPI, the pins can be specified using ACPI 5.1:
Device (STAC)
{
    Name (_HID, "GDIX1001")
    ...

    Method (_CRS, 0, Serialized)
    {
        Name (RBUF, ResourceTemplate ()
        {
            I2cSerialBus (0x0014, ControllerInitiated, 0x00061A80,
                AddressingMode7Bit, "\\I2C0",
                0x00, ResourceConsumer, ,
                )

            GpioInt (Edge, ActiveHigh, Exclusive, PullNone, 0x0000,
                "\\I2C0", 0x00, ResourceConsumer, ,
                 )
                 {   // Pin list
                     0
                 }

            GpioIo (Exclusive, PullDown, 0x0000, 0x0000,
                IoRestrictionOutputOnly, "\\I2C0", 0x00,
                ResourceConsumer, ,
                )
                {
                     1
                }
        })
        Return (RBUF)
    }

    Name (_DSD,  Package ()
    {
        ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
        Package ()
        {
            Package (2) {"irq-gpios", Package() {^STAC, 0, 0, 0 }},
            Package (2) {"reset-gpios", Package() {^STAC, 1, 0, 0 }},
            ...
        }
    }
Signed-off-by: NOctavian Purdila <octavian.purdila@intel.com>
Signed-off-by: NIrina Tirdea <irina.tirdea@intel.com>
Acked-by: NRob Herring <robh@kernel.org>
Acked-by: NBastien Nocera <hadess@hadess.net>
Tested-by: NBastien Nocera <hadess@hadess.net>
Tested-by: NAleksei Mamlin <mamlinav@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>
      ec6e1b40
  3. 04 11月, 2015 1 次提交
  5. 17 10月, 2015 1 次提交
  7. 03 10月, 2015 1 次提交
  9. 28 9月, 2015 2 次提交
  11. 06 9月, 2015 2 次提交
  13. 04 8月, 2015 1 次提交
    • D
      Input: zforce - make the interrupt GPIO optional · 62f46669
      由 Dirk Behme 提交于 
      Add support for hardware which uses an I2C Serializer / Deserializer
(SerDes) to communicate with the zFroce touch driver. In this case the
SerDes will be configured as an interrupt controller and the zForce driver
will have no access to poll the GPIO line.

To support this, we add two dedicated new GPIOs in the device tree:
reset-gpios and irq-gpios, with the irq-gpios being optional.

To not break the existing device trees, the index based 'gpios' entries
are still supported, but marked as deprecated.

With this, if the interrupt GPIO is available, either via the old or new
device tree style, the while loop will read and handle the packets as long
as the GPIO indicates that the interrupt is asserted (existing, unchanged
driver behavior).

If the interrupt GPIO isn't available, i.e. not configured via the new
device tree style, we are falling back to one read per ISR invocation
(new behavior to support the SerDes).

Note that the gpiod functions help to handle the optional GPIO:
devm_gpiod_get_index_optional() will return NULL in case the interrupt
GPIO isn't available. And gpiod_get_value_cansleep() does cover this, too,
by returning 0 in this case.
Signed-off-by: NDirk Behme <dirk.behme@de.bosch.com>
Reviewed-by: NHeiko Stuebner <heiko.stuebner@bq.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>
      62f46669
  15. 12 7月, 2015 1 次提交
  17. 30 5月, 2015 1 次提交
  19. 14 5月, 2015 1 次提交
  21. 25 3月, 2015 2 次提交
  23. 24 3月, 2015 2 次提交
  25. 09 3月, 2015 1 次提交
    • H
      Input: sun4i-ts - A10 (sun4i) has a different temperature curve · 91c68a7c
      由 Hans de Goede 提交于 
      Testing has revealed that the temperature in the rtp controller of the A10
(sun4i) SoC has a different curve then on the A13 (sun5i) and later models.

Add a new sun5i-a13-ts compatible to differentiate the newer models and
set the curve based on the compatible string.

The new curve is still not ideal on all A10-s, that seems to have to
do with there being a large spread between different A10-s out there,
the new curve us based on callibration results on 4 completely different
models:
                        raw min raw max temp min temp max stepsize offset
Tong Zhang's hackberry    2402    2680    45.0     80.0    0.125   -255.3
Hansg's Cubieboard        2207    2300    36.0     45.0    0.096   -175.8
Olliver's lime 1 (*):     2258    2537    48.3     87.1    0.139   -265.7
Olliver's lime 2 (*):     2222    2486    46.7     91.7    0.170   -331.0
*) from: http://linux-sunxi.org/Temperature_Calibration

Average all 4:                                             0.133   -257.0
Average without outliers (middle 2):                       0.132   -261.0

Since it is better to slightly overreport the temperature this patch uses
the average of all 4 as curve.

This fixes the temperature reported on the A10 being much higher then
expected.
Reported-by: NTong Zhang <lovewilliam@gmail.com>
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>
      91c68a7c
  27. 07 3月, 2015 2 次提交
  29. 04 2月, 2015 1 次提交
  31. 27 1月, 2015 1 次提交
  33. 18 1月, 2015 1 次提交
  35. 29 7月, 2014 1 次提交
  37. 22 7月, 2014 1 次提交
  39. 29 5月, 2014 2 次提交
  41. 15 5月, 2014 2 次提交
  43. 29 3月, 2014 1 次提交
  45. 28 1月, 2014 1 次提交
  47. 26 11月, 2013 1 次提交
  49. 11 11月, 2013 1 次提交
  51. 30 8月, 2013 1 次提交
  53. 13 6月, 2013 1 次提交
  55. 16 4月, 2013 1 次提交
  57. 25 2月, 2013 1 次提交
  59. 23 11月, 2012 1 次提交
  61. 01 11月, 2012 1 次提交
  63. 25 10月, 2012 1 次提交
    • H
      Input: egalax_ts - get gpio from devicetree · ae495e84
      由 Hui Wang 提交于 
      The irq_to_gpio() is old, most platforms use GENERIC_GPIO framework
and don't support this API anymore.

The i.MX6q sabrelite platform equips an egalax touchscreen controller,
and this platform already transfered to GENERIC_GPIO framework, to
support this driver, we use a more generic way to get gpio.

Add a return value checking for waking up the controller in the probe
function, this guarantee only a workable device can pass init.

[dmitry.torokhov@gmail.com: Make driver depend on CONFIG_OF as it is
 now required.]

Acked-by Zhang Jiejing <jiejing.zhang@freescale.com>
Reviewed-by: NShawn Guo <shawn.guo@linaro.org>
Signed-off-by: NHui Wang <jason77.wang@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>
      ae495e84