linux-stable.git/drivers/soc/mediatek, branch linux-4.8.y

soc: mtk-pmic-wrap: avoid integer overflow warning

2016-05-19T13:20:24+00:00

On ARM64, the mtk-pmic-wrap driver causes a harmless warning:

mtk-pmic-wrap.c:1062:16: warning: large integer implicitly truncated to unsigned type [-Woverflow]
mtk-pmic-wrap.c:1074:16: warning: large integer implicitly truncated to unsigned type [-Woverflow]
mtk-pmic-wrap.c:1086:16: warning: large integer implicitly truncated to unsigned type [-Woverflow]
  .int_en_all = ~(BIT(31) | BIT(1)),

The problem is that the result of the BIT() macro is an 'unsigned long',
so taking the bitwise NOT operation of that results in an integer
with the upper 32 bits all set and that cannot be assigned to a
'u32' variable without loss of information.

This is harmless because we were never interested in the upper bits
here anyway, so we can shut up the warning by adding a simple cast
to 'u32'.

Signed-off-by: Arnd Bergmann

Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

2016-05-18T20:14:02+00:00

Pull ARM SoC driver updates from Arnd Bergmann:
 "Driver updates for ARM SoCs, these contain various things that touch
  the drivers/ directory but got merged through arm-soc for practical
  reasons.

  For the most part, this is now related to power management
  controllers, which have not yet been abstracted into a separate
  subsystem, and typically require some code in drivers/soc or arch/arm
  to control the power domains.

  Another large chunk here is a rework of the NVIDIA Tegra USB3.0
  support, which was surprisingly tricky and took a long time to get
  done.

  Finally, reset controller handling as always gets merged through here
  as well"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (97 commits)
  arm-ccn: Enable building as module
  soc/tegra: pmc: Add generic PM domain support
  usb: xhci: tegra: Add Tegra210 support
  usb: xhci: Add NVIDIA Tegra XUSB controller driver
  dt-bindings: usb: xhci-tegra: Add Tegra210 XUSB controller support
  dt-bindings: usb: Add NVIDIA Tegra XUSB controller binding
  PCI: tegra: Support per-lane PHYs
  dt-bindings: pci: tegra: Update for per-lane PHYs
  phy: tegra: Add Tegra210 support
  phy: Add Tegra XUSB pad controller support
  dt-bindings: phy: tegra-xusb-padctl: Add Tegra210 support
  dt-bindings: phy: Add NVIDIA Tegra XUSB pad controller binding
  phy: core: Allow children node to be overridden
  clk: tegra: Add interface to enable hardware control of SATA/XUSB PLLs
  drivers: firmware: psci: make two helper functions inline
  soc: renesas: rcar-sysc: Add support for R-Car H3 power areas
  soc: renesas: rcar-sysc: Add support for R-Car E2 power areas
  soc: renesas: rcar-sysc: Add support for R-Car M2-N power areas
  soc: renesas: rcar-sysc: Add support for R-Car M2-W power areas
  soc: renesas: rcar-sysc: Add support for R-Car H2 power areas
  ...

soc: mediatek: PMIC wrap: add MT2701/7623 support

2016-04-20T11:03:06+00:00

Add the registers, callbacks and data structures required to make the
wrapper work on MT2701 and MT7623.

Signed-off-by: John Crispin 
Signed-off-by: Matthias Brugger

soc: mediatek: PMIC wrap: add mt6323 slave support

2016-04-20T11:03:05+00:00

Add support for MT6323 slaves. This PMIC can be found on MT2701 and MT7623
EVB. The only function that we need to touch is pwrap_init_cipher().

Signed-off-by: John Crispin 
Signed-off-by: Matthias Brugger

soc: mediatek: PMIC wrap: add a slave specific struct

2016-04-20T11:03:04+00:00

This patch adds a new struct pwrap_slv_type that we use to store the slave
specific data. The patch adds 2 new helper functions to access the dew
registers. The slave type is looked up via the wrappers child node.

Signed-off-by: John Crispin 
Signed-off-by: Matthias Brugger

soc: mediatek: PMIC wrap: remove pwrap_is_mt8135() and pwrap_is_mt8173()

2016-04-20T11:03:04+00:00

With more SoCs being added the list of helper functions like these would
grow. To mitigate this problem we remove the existing helpers and change
the code to test against the pmic type stored inside the pmic specific
datastructure that our context structure points at. There is one usage of
pwrap_is_mt8135() that is ambiguous as the test should not be dependent on
mt8135, but rather on the existence of a bridge. Add a new element to
pmic_wrapper_type to indicate if a bridge is present and use this where
appropriate.

Signed-off-by: John Crispin 
Signed-off-by: Matthias Brugger

soc: mediatek: PMIC wrap: move wdt_src into the pmic_wrapper_type struct

2016-04-20T11:03:03+00:00

Different SoCs will use different bitmask for the wdt_src. This patch
defines the bitmask in the pmic_wrapper_type struct. This allows us to
support new SoCs with a different bitmask to the one currently used.

Signed-off-by: John Crispin 
Signed-off-by: Matthias Brugger

soc: mediatek: PMIC wrap: SPI_WRITE needs a different bitmask for MT2701/7623

2016-04-20T11:03:02+00:00

Different SoCs will use different bitmask for the SPI_WRITE command. This
patch defines the bitmask in the pmic_wrapper_type struct. This allows us
to support new SoCs with a different bitmask to the one currently used.

Signed-off-by: John Crispin 
Signed-off-by: Matthias Brugger

soc: mediatek: PMIC wrap: WRAP_INT_EN needs a different bitmask for MT2701/7623

2016-04-20T11:03:02+00:00

MT2701 and MT7623 use a different bitmask for PWRAP_INT_EN.

Signed-off-by: John Crispin 
Signed-off-by: Matthias Brugger

soc: mediatek: PMIC wrap: split SoC specific init into callback

2016-04-20T11:03:01+00:00

This patch moves the SoC specific wrapper init code into separate callback
to avoid pwrap_init() getting too large. This is done by adding a new
element called init_special to pmic_wrapper_type. Each currently supported
SoC gets its own version of the callback and we copy the code that was
previously inside pwrap_init() to these new callbacks. Finally we point the
2 instances of pmic_wrapper_type at the 2 new functions.

Signed-off-by: John Crispin 
Signed-off-by: Matthias Brugger