Drivers can use the tegra_powergate_remove_clamping() API during
initialization. In order to allow such drivers to be built as modules,
export the symbol.
Signed-off-by: NThierry Reding <treding@nvidia.com>
Signed-off-by: NStephen Warren <swarren@nvidia.com>

This function can be used by drivers, which in turn may be built as
modules. Export the symbol so it is available to modules.
Signed-off-by: NThierry Reding <treding@nvidia.com>
Signed-off-by: NStephen Warren <swarren@nvidia.com>

This matches the name of the powergate as listed in the TRM.
Signed-off-by: NThierry Reding <treding@nvidia.com>
Signed-off-by: NStephen Warren <swarren@nvidia.com>

Some of the powergate code uses unusual spacing around == and has a tab
instead of a space before an opening parenthesis.
Signed-off-by: NThierry Reding <treding@nvidia.com>
Signed-off-by: NStephen Warren <swarren@nvidia.com>

Tegra's clock driver now provides an implementation of the common
reset API (include/linux/reset.h). Use this instead of the old Tegra-
specific API; that will soon be removed.
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Acked-by: NBjorn Helgaas <bhelgaas@google.com>
Acked-By: NTerje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: NThierry Reding <treding@nvidia.com>
Acked-by: NThierry Reding <treding@nvidia.com>

Extend the list of power gates found on Tegra114. Note that there are
now holes in the list, so perhaps a simple array is no longer the best
data structure to represent it.
Signed-off-by: NThierry Reding <treding@nvidia.com>
Signed-off-by: NStephen Warren <swarren@nvidia.com>

There's no need to modify these at runtime, it is static data and never
needs to change.
Signed-off-by: NThierry Reding <treding@nvidia.com>
Signed-off-by: NStephen Warren <swarren@nvidia.com>

This is required so that code such as Tegra's PCIe and clock drivers
can still access this header file once Tegra is converted to
multiplatform, and <mach/> no longer exists.
Signed-off-by: NStephen Warren <swarren@nvidia.com>

Don't treat it as an error if a partition is already in the same power
state when a user wants to power it on or off. This allows code to
proceed if no state change is required.
Signed-off-by: NThierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: NStephen Warren <swarren@nvidia.com>

This function can be used by drivers to enable power to the hardware
blocks that they drive. Most of the drivers can be built as a module
and therefore require this function to be exported.
Signed-off-by: NThierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: NStephen Warren <swarren@nvidia.com>

Migrate Tegra clock support to drivers/clk/tegra, this involves
moving:
1. definition of tegra_cpu_car_ops to clk.c
2. definition of reset functions to clk-peripheral.c
3. change parent of cpu clock.
4. Remove legacy clock initialization.
5. Initialize clocks using DT.
6. Remove all instance of mach/clk.h
Signed-off-by: NPrashant Gaikwad <pgaikwad@nvidia.com>
[swarren: use to_clk_periph_gate().]
Signed-off-by: NStephen Warren <swarren@nvidia.com>

Nothing outside mach-tegra uses this file, so there's no need for it to
be in <mach/>.

Since uncompress.h and debug-macro.S remain in include/mach, they need
to include "../../iomap.h" becaue of this change. uncompress.h will soon
be deleted in later multi-platform/single-zImage patches. debug-macro.S
will need to continue to include this header using an explicit relative
path, to avoid duplicating the physical->virtual address mapping that
iomap.h dictates.
Signed-off-by: NStephen Warren <swarren@nvidia.com>

Tegra30 has more powerdomains than Tegra20. The debugfs code did not take this
into account.
Signed-off-by: NPeter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: NStephen Warren <swarren@nvidia.com>

tegra_powergate_debugfs_init() always returns -ENOMEM. It shouldn't do that
when registering the debugfs entry succeeded.
Signed-off-by: NPeter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: NStephen Warren <swarren@nvidia.com>

Use clk_prepare/clk_unprepare as required by the generic clk framework.

Tested on Ventana and Cardhu.
Signed-off-by: NPrashant Gaikwad <pgaikwad@nvidia.com>
Signed-off-by: NStephen Warren <swarren@nvidia.com>

Cc: Colin Cross <ccross@android.com>
Cc: Olof Johansson <olof@lixom.net>
Signed-off-by: NShawn Guo <shawn.guo@linaro.org>
Acked-by: NStephen Warren <swarren@wwwdotorg.org>

Secondary CPU powerdomains can be powergated on Tegra30. Add the necessary
functions to do this. This will be used to boot the secondary CPUs later on.
Signed-off-by: NPeter De Schrijver <pdeschrijver@nvidia.com>
Acked-by: NStephen Warren <swarren@nvidia.com>
Tested-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>

Add support for the new powerdomains in Tegra30 such as extra CPU cores and
the SATA domain.
Signed-off-by: NPeter De Schrijver <pdeschrijver@nvidia.com>
Acked-by: NStephen Warren <swarren@nvidia.com>
Tested-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>

Export tegra_powergate_is_powered(). This function will be used by the Tegra30
code to bringup secondary CPU cores.
Signed-off-by: NPeter De Schrijver <pdeschrijver@nvidia.com>
Acked-by: NStephen Warren <swarren@nvidia.com>
Tested-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>

Prepare the powergating code for other Tegra variants which have a different
number of powerdomains.
Signed-off-by: NPeter De Schrijver <pdeschrijver@nvidia.com>
Acked-by: NStephen Warren <swarren@nvidia.com>
Tested-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>

Not exported and not used externally.

Also, fix return type. Due to new return type, errors can't be returned
so WARN_ON instead of returning error if a bad parameter is specified.
Signed-off-by: NOlof Johansson <olof@lixom.net>
Acked-by: NStephen Warren <swarren@nvidia.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>

Signed-off-by: NColin Cross <ccross@android.com>