Skip to content

K
kernel_linux

OpenHarmony / kernel_linux
上一次同步 3 年多

通知 13
Star 8
Fork 2
K
kernel_linux
切换分支/标签
  1. 07 12月, 2016 1 次提交
    • G
      staging: slicoss: remove the staging driver · 0af72df2
      由 Greg Kroah-Hartman 提交于 
      A "real" driver for this hardware has now landed in the networking tree,
so remove this old staging driver so that we don't have multiple drivers
for the same hardware, and so people don't waste their time trying to
clean up this old code.

Cc: Lior Dotan <liodot@gmail.com>
Cc: Christopher Harrer <charrer@alacritech.com>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      0af72df2
  3. 13 11月, 2016 5 次提交
  5. 11 11月, 2016 1 次提交
  7. 31 10月, 2016 1 次提交
  9. 28 10月, 2016 3 次提交
  11. 27 10月, 2016 2 次提交
  13. 26 10月, 2016 2 次提交
    • R
      MAINTAINERS: Begin module maintainer transition · a467a672
      由 Rusty Russell 提交于 
      Being a Linux kernel maintainer has been my proudest professional
accomplishment, spanning the last 19 years.  But now we have a surfeit
of excellent hackers, and I can hand this over without regret.

I'll still be around as co-maintainer for another cycle, but Jessica
is now the one to convince if you want your patches applied.  She
rocks, and is far more timely than me too!
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
Acked-by: NJessica Yu <jeyu@redhat.com>
      a467a672
    • L
      iio: gyro: Add driver for the MPU-3050 gyroscope · 3904b28e
      由 Linus Walleij 提交于 
      This adds a new driver for the Invensense MPU-3050 gyroscope.
This driver is based on information from the rough input driver
in drivers/input/misc/mpu3050.c and the scratch misc driver
posted by Nathan Royer in 2011. Some years have passed but this
is finally a fully-fledged driver for this gyroscope. It was
developed and tested on the Qualcomm APQ8060 Dragonboard.

The driver supports both raw and buffered input. It also
supports the internal trigger mechanism by registering a trigger
that can fire in response to the internal sample engine of the
component. In addition to reading out the gyroscope sensor
values, the driver also supports reading the temperature from
the sensor.

The driver currently only supports I2C but the MPU-3050 can
also be used from SPI, so the I2C portions are split in their
own file and we just use regmap to access all registers, so
it will be trivial to plug in SPI support if/when someone has
a system requiring this.

To conserve power, the driver utilizes the runtime PM
framework and will put the sensor in off mode and disable the
regulators when unused, after a timeout of 10 seconds.

The fullscale can be set for the sensor to 250, 500, 1000 or
2000 deg/s. This corresponds to scale values of rougly 0.000122,
0.000275, 0.000512 or 0.001068. By writing such values (or close
to these) into "in_anglevel_scale", the corresponding fullscale
can be chosen. It will default to 2000 deg/s (~35 rad/s).

The gyro component can have DC offsets on all axes. These can be
compensated using the standard sysfs ABI property
"in_anglevel_[xyz]_calibbias". This is in positive/negative
values of the raw values, so a suitable calibration bias can be
determined by userspace by reading the "in_anglevel_[xyz]_raw"
for a few iterations while holding the sensor still, create an
average integer, and writing the negative inverse of that into
"in_anglevel_[xyz]_calibbias". After this the hardware will
automatically subtract the bias, also when using buffered
readings.

Since the MPU-3050 has an outgoing I2C port it needs to act as
an I2C mux. This means that the device is switching I2C traffic
to devices beyond it. On my system this is the only way to reach
the accelerometer. The "sensor fusion" ability of the MPU-3050
to directly talk to the device on the outgoing I2C port is
currently not used by the driver, but it has code to allow I2C
traffic to pass through so that the Linux kernel can reach the
device on the other side with a kernel driver.

Example usage with the native trigger:

$ generic_buffer -a -c10 -n mpu3050
iio device number being used is 0
iio trigger number being used is 0
No channels are enabled, enabling all channels
Enabling: in_anglvel_z_en
Enabling: in_timestamp_en
Enabling: in_anglvel_y_en
Enabling: in_temp_en
Enabling: in_anglvel_x_en
/sys/bus/iio/devices/iio:device0 mpu3050-dev0
29607.142578 -0.117493 0.074768 0.012817 180788797150
29639.285156 -0.117493 0.076904 0.013885 180888982335
29696.427734 -0.116425 0.076904 0.012817 180989178039
29742.857422 -0.117493 0.076904 0.012817 181089377742
29764.285156 -0.116425 0.077972 0.012817 181189574187
29860.714844 -0.115356 0.076904 0.012817 181289772705
29864.285156 -0.117493 0.076904 0.012817 181389971520
29910.714844 -0.115356 0.076904 0.013885 181490170483
29917.857422 -0.116425 0.076904 0.011749 181590369742
29975.000000 -0.116425 0.076904 0.012817 181690567075
Disabling: in_anglvel_z_en
Disabling: in_timestamp_en
Disabling: in_anglvel_y_en
Disabling: in_temp_en
Disabling: in_anglvel_x_en

The first column is the temperature in millidegrees, then the x,y,z
axes in succession followed by the timestamp. Also tested successfully
using the HRTimer trigger.

Cc: Nick Vaccaro <nvaccaro@google.com>
Cc: Ge Gao <ggao@invensense.com>
Cc: Anna Si <asi@invensense.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Crestez Dan Leonard <leonard.crestez@intel.com>
Cc: Daniel Baluta <daniel.baluta@intel.com>
Cc: Gregor Boirie <gregor.boirie@parrot.com>
Cc: Peter Rosin <peda@axentia.se>
Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>
      3904b28e
  15. 25 10月, 2016 1 次提交
  17. 24 10月, 2016 1 次提交
  19. 18 10月, 2016 2 次提交
  21. 17 10月, 2016 2 次提交
  23. 13 10月, 2016 2 次提交
  25. 11 10月, 2016 1 次提交
  27. 08 10月, 2016 8 次提交
  29. 06 10月, 2016 5 次提交
    • P
      auxdisplay: img-ascii-lcd: driver for simple ASCII LCD displays · 0cad855f
      由 Paul Burton 提交于 
      Add a driver for simple ASCII LCD displays found on the MIPS Boston,
Malta & SEAD3 development boards. The Boston display is an independent
memory mapped device with a simple memory mapped 8 byte register space
containing the 8 ASCII characters to display. The Malta display is
exposed as part of the Malta board registers, and provides 8 registers
each of which corresponds to one of the ASCII characters to display. The
SEAD3 display is slightly more complex, exposing an interface to an
S6A0069 LCD controller via registers provided by the boards CPLD.
However although the displays differ in their register interface, we
require similar functionality on each board so abstracting away the
differences within a single driver allows us to share a significant
amount of code & ensure consistent behaviour.

The driver displays the Linux kernel version as the default message, but
allows the message to be changed via a character device. Messages longer
then the number of characters that the display can show will scroll.

This provides different behaviour to the existing LCD display code for
the MIPS Malta or MIPS SEAD3 platforms in the following ways:

  - The default string to display is not "LINUX ON MALTA" or "LINUX ON
    SEAD3" but "Linux" followed by the version number of the kernel
    (UTS_RELEASE).

  - Since that string tends to be significantly longer it scrolls twice
    as fast, moving every 500ms rather than every 1s.

  - The LCD won't be updated until the driver is probed, so it doesn't
    provide the early "LINUX" string.
Signed-off-by: NPaul Burton <paul.burton@imgtec.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Miguel Ojeda Sandonis <miguel.ojeda.sandonis@gmail.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: David S. Miller <davem@davemloft.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14062/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
      0cad855f
    • P
      dt-bindings: img-ascii-lcd: Document a binding for simple ASCII LCDs · 8ef3ff27
      由 Paul Burton 提交于 
      Add documentation for a devicetree binding for the simple ASCII LCD
displays found on development boards such as the MIPS Boston, MIPS Malta
& MIPS SEAD3 from Imagination Technologies.
Signed-off-by: NPaul Burton <paul.burton@imgtec.com>
Acked-by: NRob Herring <robh@kernel.org>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: David S. Miller <davem@davemloft.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14061/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
      8ef3ff27
    • M
      MAINTAINERS: Update powerpc website & add selftests · ad654f25
      由 Michael Ellerman 提交于 
      The selftests under tools/testing/selftests/powerpc are maintained by
us, so add a file pattern for them.

Also drop the www.penguinppc.org link, it's not dead, but the site is
dead (database error). Instead link to the wiki attached to our github,
there is some info there which may be useful, which is better than none.
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
      ad654f25
    • M
      MAINTAINERS: Drop separate pseries entry · 55099115
      由 Michael Ellerman 提交于 
      Paul is no longer acting as a separate maintainer for pseries, it is
handled along with the rest of powerpc. The URL no longer links anywhere
meaningful, so drop it also.
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
Acked-by: NPaul Mackerras <paulus@ozlabs.org>
      55099115
    • O
      MAINTAINERS: Remove myself from PA Semi entries · 56a5b8da
      由 Olof Johansson 提交于 
      The platform is old, very few users and I lack bandwidth to keep after
it these days.

Mark the base platform as well as the drivers as orphans, patches have
been flowing through the fallback maintainers for a while already.
Signed-off-by: NOlof Johansson <olof@lixom.net>
Acked-by: NWolfram Sang <wsa@the-dreams.de>
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
      56a5b8da
  31. 04 10月, 2016 2 次提交
  33. 02 10月, 2016 1 次提交