Enable fast bcm4329 WIFI suspend/resume on Tegra2 board.

This patch allows the mach-tegra support to tell the tegra MMC host
controller to NOT turn off power for the MMC controller the WIFI part
lives behind.  Thus bcm4329 firmware doesn't need to be reloaded.
Signed-off-by: NVenkat Rao <vrao@broadcom.com>
Tested-by: NGrant Grundler <grundler@chromium.org>
Reviewed-by: NOlof Johansson <olof@lixom.net>
Acked-by: NOlof Johansson <olof@lixom.net>
Signed-off-by: NChris Ball <cjb@laptop.org>

Convert ixp4xx, lpc32xx, mxc, netx, pxa, sa1100, tcc8k, tegra and u300
to use the generic mmio clocksource recently introduced.

Cc: Imre Kaloz <kaloz@openwrt.org>
Cc: Krzysztof Halasa <khc@pm.waw.pl>
Acked-by: NEric Miao <eric.y.miao@gmail.com>
Acked-by: N"Hans J. Koch" <hjk@hansjkoch.de>
Acked-by: NColin Cross <ccross@android.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Olof Johansson <olof@lixom.net>
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Acked-by: NSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Rather than having each platform class provide a mach/smp.h header for
smp_cross_call(), arrange for them to register the function with the
core ARM SMP code instead.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Since mandatory barriers may be used (explicitly or implicitly via readl
etc.) to ensure the ordering between Device and Normal memory accesses,
a DMB is not enough. This patch converts it to a DSB.

Cc: Colin Cross <ccross@android.com>
Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Tegra hardware design cannot reliably support an arbitrary set of keys
waking up the system. Modify wakeup logic so either any key wakes the
system up or none will do.
Signed-off-by: NRakesh Iyer <riyer@nvidia.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Implement irq_eoi to allow the GIC irq chip flow controller to
be changed to fasteoi.
Signed-off-by: NColin Cross <ccross@android.com>

Now that irq.c is just an interface layer between the gic
and legacy_irq.c, move the contents of legacy_irq.c into
irq.c.
Signed-off-by: NColin Cross <ccross@android.com>

Tegra PM irq support is being improved, remove it for now
until the rest of the platform gets PM support.
Signed-off-by: NColin Cross <ccross@android.com>

Replace the ugly hack that inserts legacy irq controller calls
into the irq call paths by reading and replacing the gic irq
chip with the new gic arch extensions.
Signed-off-by: NColin Cross <ccross@android.com>

This patch updates the Tegra gpio chained IRQ handler to use the chained
IRQ enter/exit functions in order to function correctly on primary
controllers with different methods of flow control.

This is required for the GIC to move to fasteoi interrupt handling.
Acked-by: NColin Cross <ccross@android.com>
Signed-off-by: NWill Deacon <will.deacon@arm.com>

Add ghost key filtering support for the Nvidia Tegra matrix keyboard.
Signed-off-by: NRakesh Iyer <riyer@nvidia.com>
Reviewed-by: NHenrik Rydberg <rydberg@euromail.se>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

CONFIG_SND_SOC_TEGRA_WM8903 is useful for many Tegra boards. To avoid the
ASoC tegra/Kconfig enumerating them all, instead have the Tegra machine
Kconfig select MACH_HAS_SND_SOC_TEGRA_WM8903 where appropriate, and have
SND_SOC_TEGRA_WM8903 depend on this.

[Redid ASoC diff so it applies. -- broonie]
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Acked-by: NOlof Johansson <olof@lixom.net>
Acked-by: NLiam Girdwood <lrg@ti.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Seaboard derivate Kaen has a GPIO to mute the headphone output. Add a field
to tegra_wm8903_platform_data so the board files can pass the GPIO number
for that to the ASoC machine driver.

Also, initialize this new field to a "not present" value for Harmony.
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Soon, this machine driver will be updated to handle a number of Tegra boards
using the WM8903 codec. Rename the platform device in advance to reflect this.
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

The audio driver will soon support more than just the Tegra Harmony board.
Rename the platform data header file and data type to reflect this.
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Signed-off-by: NJustin P. Mattock <justinmattock@gmail.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Checking 'rate < 0' doesn't work because 'rate' is unsigned.
Signed-off-by: NNicolas Kaiser <nikai@nikai.net>
Signed-off-by: NColin Cross <ccross@android.com>

Fixes generated by 'codespell' and manually reviewed.
Signed-off-by: NLucas De Marchi <lucas.demarchi@profusion.mobi>

Change b0f18eda
(arm: tegra: Remove unused bogus irq enable/disable magic)
introduces warnings:
arch/arm/mach-tegra/gpio.c: In function 'tegra_gpio_resume':
arch/arm/mach-tegra/gpio.c:260: warning: unused variable 'i'
arch/arm/mach-tegra/gpio.c: In function 'tegra_gpio_suspend':
arch/arm/mach-tegra/gpio.c:283: warning: unused variable 'i'

Fix them, and fix a coding style issue on the same lines.
Signed-off-by: NColin Cross <ccross@android.com>
Acked-by: NErik Gilling <konkers@konkers.net>

Use irq_set_chip_and_handler() instead. Converted with coccinelle.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Convert to the new function names. Automated with coccinelle.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Remove the open coded access to irq_desc which will fail on sparse irq
and use the proper wrappers.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

The core code handles thees already.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Cc: Colin Cross <ccross@android.com>
Cc: linux-tegra@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org

Initialize the PMIC voltage regulators and provide the supply map for
PCI-e clock supply. The rest of the supplies should be added together
with the drivers that use them.
Signed-off-by: NMike Rapoport <mike@compulab.co.il>
CC: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>

On Harmony board PCI-e subsystem can be enabled only after certain
voltage regulators are on. One of the regulators is an internal
regulator on the PMIC and another one is controlled by a PMIC GPIO.
Addition of the voltage control to the Harmony PCI-e initialization
allows booting of kernel with CONFIG_TEGRA_PCI even if the PMIC driver
is not loaded. In this case the PCI-e initialization will fail
gracefully intead of hanging the system.
Signed-off-by: NMike Rapoport <mike@compulab.co.il>
Signed-off-by: NOlof Johansson <olof@lixom.net>

Interface used by Tegra's gadget driver and ehci driver
to power on and configure the USB PHYs.
Signed-off-by: NBenoit Goby <benoit@android.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

TrimSlice has MicroSD and standard MMC/SD slots.
Register sdhci devices and enable GPIOs for MMC/SD slot.
Signed-off-by: NMike Rapoport <mike@compulab.co.il>

This patch adds the config infrastructure, the pinmux and basic
board setup code for PAZ00 (name of board inside the AC100/AZ).
Signed-off-by: NMarc Dietrich <marvin24@gmx.de>
Signed-off-by: NOlof Johansson <olof@lixom.net>

This is the final patch to enable audio support on Harmony. It additionally
relies on the latest ASoC branch being merged in, which provides the header
defining the gpio_base field in the WM8903 platform data.
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>

This patch is the portion of the audio-related setup that relies additionally
on the latest Tegra I2C driver being merged.

* Define platform data for WM8903 audio codec
* Register WM8903 as an I2C device
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>

Register the base i2c busses on harmony. Devices coming at a later date,
but this allows for hand-probing of some of them at least.
Signed-off-by: NOlof Johansson <olof@lixom.net>
Acked-by: NStephen Warren <swarren@nvidia.com>

Register the base i2c devices on seaboard. A few more are pending,
but it's a start.
Signed-off-by: NOlof Johansson <olof@lixom.net>
Acked-by: NStephen Warren <swarren@nvidia.com>

This change includes everything required to enable audio on Harmony, except
those parts which rely on code not currently in Tegra's for-next branch, i.e.
except those parts which rely on merges of the Tegra I2C driver or latest
ASoC subsystem.

* Define GPIO names for audio-related GPIOs
* Set up platform data and platform device for ASoC machine driver
* Register audio-related platform devices
* Initialize audio-related clocks
* Correctly configure pinmux and GPIO enables for audio-related pins
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>

This ensures they're kept in sync between platform_data definitions and
the GPIO table initialization.
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>

For I2S, DAS, PCM devices
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>

Currently tegra_pcie_init is effectively called as subsys_initcall. With
multiplatform kernel this may cause hangs on boards that don't intend to
support Tegra2 PCI-e. Ensure that TrimSlice board code initializes PCI-e
only when actually running on the TrimSlice.
Signed-off-by: NMike Rapoport <mike@compulab.co.il>
Signed-off-by: NColin Cross <ccross@android.com>

Signed-off-by: NMike Rapoport <mike@compulab.co.il>
Signed-off-by: NColin Cross <ccross@android.com>

Move tegra_pcie_power_off before tegra_pcie_power_on for clean addition
of PCIE power gating
Signed-off-by: NMike Rapoport <mike@compulab.co.il>
Signed-off-by: NColin Cross <ccross@android.com>

tegra_dma_init currently simply bails out early if any initialization fails.
This skips various data-structure initialization. In turn, this means that
tegra_dma_allocate_channel can still hand out channels. In this case, when
tegra_dma_free_channel is called, which calls tegra_dma_cancel, the walking
on ch->list will OOPS since the list's next/prev pointers may still be
NULL.

To solve this, add an explicit "initialized" flag, only set this once _init
has fully completed successfully, and have _allocate_channel refuse to hand
out channels if this is not set.

While at it, simplify _init:
* Remove redundant memsets
* Use bitmap_fill to mark all channels as in-use up-front, and remove
  some now-redundant bitmap initialization loops.
* Only mark a channel as free once all channel-related initialization has
  completed.

Finally, the successful exit path from _init always has ret==0, so just
hard-code that return. The error path still returns ret.
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NColin Cross <ccross@android.com>

The ASoC machine driver was written assuming my previous patch to add
complete support for these clocks, which named them cdev1/2. Rename
the clocks to match that, to avoid churn in the ASoC driver.

This rename also makes the clocks more consistent with other Tegra
clocks irrespective of any of that.
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NColin Cross <ccross@android.com>