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Commit Graph

132 Commits

Author SHA1 Message Date
Marc Dietrich
65b935aa99 ARM: tegra: Add Toshiba AC100 support
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: Marc Dietrich <marvin24@gmx.de>
Signed-off-by: Olof Johansson <olof@lixom.net>
2011-03-07 15:44:34 -08:00
Stephen Warren
06fc9a3005 ARM: tegra: harmony: Set WM8903 gpio_base
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: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2011-03-07 15:44:33 -08:00
Stephen Warren
fba3b2fc1b ARM: tegra: harmony: I2C-related portions of audio support
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: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2011-03-07 15:44:32 -08:00
Olof Johansson
de4855d928 ARM: tegra: harmony: register i2c devices
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: Olof Johansson <olof@lixom.net>
Acked-by: Stephen Warren <swarren@nvidia.com>
2011-03-07 15:44:32 -08:00
Olof Johansson
f9a795af4d ARM: tegra: seaboard: register i2c devices
Register the base i2c devices on seaboard. A few more are pending,
but it's a start.

Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Stephen Warren <swarren@nvidia.com>
2011-03-07 15:44:09 -08:00
Stephen Warren
ef2b1a0f1e ARM: tegra: harmony: Beginnings of audio support
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: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2011-03-07 15:34:25 -08:00
Stephen Warren
986afbe493 ARM: tegra: create defines for SD-related GPIO names
This ensures they're kept in sync between platform_data definitions and
the GPIO table initialization.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2011-03-07 15:34:25 -08:00
Stephen Warren
b9652c2d12 ARM: tegra: add devices.c entries for audio
For I2S, DAS, PCM devices

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2011-03-07 15:34:24 -08:00
Mike Rapoport
d5fdafd38c ARM: tegra: trimslice: initialize PCI-e only when running on TrimSlice
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: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Colin Cross <ccross@android.com>
2011-03-03 13:57:31 -08:00
Mike Rapoport
b96cc7fe19 ARM: tegra: add PCI Express power gating
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Colin Cross <ccross@android.com>
2011-03-03 13:57:07 -08:00
Mike Rapoport
1e40a97e6c ARM: tegra: PCIE minor code refactoring
Move tegra_pcie_power_off before tegra_pcie_power_on for clean addition
of PCIE power gating

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Colin Cross <ccross@android.com>
2011-03-03 13:56:08 -08:00
Stephen Warren
ccac05152e ARM: Tegra: DMA: Fail safe if initialization fails
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: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-23 14:06:03 -08:00
Stephen Warren
ddb7d5d80e ARM: Tegra: Rename clk_dev1/2 to cdev1/2
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: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-23 14:00:11 -08:00
Stephen Warren
3c106bf5b3 ARM: Tegra: Rename I2S clocks to match driver name
The driver is tegra-i2s not just i2s. Rename the clocks to match, so that
clk_get_sys can look up by driver name.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-23 14:00:11 -08:00
Stephen Warren
dc54c23bb0 ARM: Tegra: Make tegra_dma_init a postcore_initcall
The following commit makes the Tegra APB DMA engine fail to initialize
correctly: 0cf6230af9
ARM: tegra: Move tegra_common_init to tegra_init_early

The reason is that tegra_init_early_ calls tegra_dma_init which calls
request_threaded_irq, which fails since the IRQ hasn't yet been marked
valid; that only happens in tegra_init_irq, which gets called after
tegra_init_early.

This used to work OK, since tegra_init_early was tegra_common_init, which
got called after tegra_init_irq, basically from the beginning of
tegra_harmony_init.

Solve this by converting tegra_dma_init to a postcore_initcall. This makes
it execute late enough that IRQs are marked valid, and avoids having to
add it back to every machine's init function.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-23 14:00:11 -08:00
Olof Johansson
d9a51fe75d ARM: tegra: add seaboard, wario and kaen boards
This adds board support for the Seaboard eval platform and some of the
derivatives that are very similar. Since they only differ in some very
minor ways, most of the code is shared.

Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Colin Cross <ccross@android.com>
2011-02-22 17:28:14 -08:00
Olof Johansson
8c396604d5 ARM: tegra: harmony: fix pinmux for MMC slot
Turns out MMC2 (the bayonet 4-lane port) wasn't enabled in the
original pinmux. Fix that.

Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Colin Cross <ccross@android.com>
2011-02-22 17:28:13 -08:00
Olof Johansson
875d4af6a3 ARM: tegra: harmony: register sdhci devices
Add the 3 sdhci devices that are available on Harmony as
platform devices. Two go to slots (one 4-lane, one 8-lane),
and one goes to onboard wifi.

Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Colin Cross <ccross@android.com>
2011-02-22 17:28:12 -08:00
Olof Johansson
ec243a071d ARM: tegra: remove stale nvidia atag handler
Remove dead atag handling code for nvidia-specific tags.

Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Colin Cross <ccross@android.com>
2011-02-22 17:28:12 -08:00
Olof Johansson
85940b4a17 ARM: tegra: common device resources
Add a common location to register resources for used on-chip devices
that are commonly configured on boards. Devices will be added to this file
as more drivers are added that can make use of them.

This is based on work contributed by several people, most of it from
Colin Cross and Erik Gilling.

Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Colin Cross <ccross@android.com>
2011-02-22 17:28:11 -08:00
Olof Johansson
0ec1b606c0 ARM: tegra: harmony: move over to tegra_gpio_config
Move harmony over to use the new gpio config table instead of having
separate settings in various parts of the code.

(The tegra sdhci driver should have the tegra_gpio_* ops removed, but
that will be done separately from this change.)

Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Erik Gilling <konkers@android.com>
2011-02-22 17:28:06 -08:00
Olof Johansson
632095ea15 ARM: tegra: add tegra_gpio_table and tegra_gpio_config
To give one place to setup the pins that are used as GPIOs instead
of as their pinmuxed functions. Specifying enabled as false explicitly
disables the gpio mode of that pin (if left on by firmware).

This should remove the need for calling these from specific drivers and
thus reduce tegra-specific code from them.

Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Erik Gilling <konkers@android.com>
2011-02-22 17:27:11 -08:00
Mark Brown
38376866a1 ARM: tegra: Hide EMC scaling config behind ARCH_TEGRA
The option isn't terribly useful on other ARM platforms.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-22 14:48:44 -08:00
Stephen Warren
e19e881fcb ARM: tegra: Fix typo in TEGRA_IRQ_TO_GPIO
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-22 14:48:42 -08:00
Colin Cross
cd51d0edec ARM: tegra: common: Enable core clocks
Enable the cpu, emc (memory controller) and csite (debug and
trace controller) clocks during init to prevent them from
being disabled by the bootloader clock disabling code.

Signed-off-by: Colin Cross <ccross@android.com>
Acked-by: Olof Johansson <olof@lixom.net>
2011-02-22 14:48:37 -08:00
Colin Cross
62248ae826 ARM: tegra: timer: Enable timer and rtc clocks
Enable the timer and rtc clocks to prevent them being
turned off by the bootloader clock disabling code.

Signed-off-by: Colin Cross <ccross@android.com>
Acked-by: Olof Johansson <olof@lixom.net>
2011-02-22 14:48:27 -08:00
Colin Cross
0cf6230af9 ARM: tegra: Move tegra_common_init to tegra_init_early
Move tegra_common_init to tegra_init_early, and set it
as the init_early entry in the machine struct.
Initializes the clocks earlier so that timers can enable
their clocks.

Also reorders the members in the Harmony and Trimslice
boards' machine structs to match the order they are
called in.

Signed-off-by: Colin Cross <ccross@android.com>
Acked-by: Olof Johansson <olof@lixom.net>
2011-02-22 11:25:12 -08:00
Colin Cross
1be3d05375 ARM: tegra: clock: prevent accidental disables of cpu clock
Peripheral clocks that have no clock enable bit in the
enable registers have their clk_num set to 0.  Bit 0
in the clock enable registers is the CPU clock.
Prevent disables on these peripheral clocks from
accidentally disabling the CPU clock.

Signed-off-by: Colin Cross <ccross@android.com>
Acked-by: Olof Johansson <olof@lixom.net>
2011-02-22 11:25:07 -08:00
Colin Cross
421186e710 ARM: tegra: clock: Round rate before setting rate
Call the clock's round_rate op, if it exists, before calling
the set_rate op.  This will help later when dvfs is added,
dvfs needs to know what the final rate will be before the
frequency changes.

Also requires fixes to the round rate functions to ensure
calling round rate and then set rate will not cause the
frequency to be rounded down twice.  When picking clock
divider values, the clock framework picks the closest
frequency that is lower than the requested frequency.  If
the new frequency calculated from the divider value is
rounded down, and then passed to set_rate, it will get
rounded down again, possibly resulting in a frequency two
steps lower than the original requested frequency.

Fix the problem by rounding up when calculating the frequency
coming out of a clock divider, so if that frequency is
requested again, the same divider value will be picked.

Signed-off-by: Colin Cross <ccross@android.com>
Acked-by: Olof Johansson <olof@lixom.net>
2011-02-22 11:22:34 -08:00
Colin Cross
78f379b574 ARM: tegra: clock: Refcount periph clock enables
Some peripheral clocks share enable bits.  Refcount the enables so
that calling clk_disable on one clock will not turn off another
clock.

Signed-off-by: Colin Cross <ccross@android.com>
Acked-by: Olof Johansson <olof@lixom.net>
2011-02-22 11:22:24 -08:00
Colin Cross
9c7dc562cd ARM: tegra: clock: Miscellaneous clock updates
Correct max rates for pclk and sclk (Originally fixed by
  Dima Zavin <dima@android.com>)

Correct max rate for plla (Originally fixed by
  Stephen Warren <swarren@nvidia.com>)

Remove unnecessary no-op set_rate on audio clocks

Add clock lookup entries for grhost, bsea, and vde clocks

Update clock clookup entries for vcp, bsea, and vde clocks

Add shared clock entries for sclk and emc

Add a virtual cop clock to provide a reset op (Originally fixed by
  Dima Zavin <dima@android.com>)

Pass set_rate on super clocks through to parent

Fix pllx frequency table entry for 608 MHz

Remove incorrect plla frequency table entries

Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-21 00:16:48 -08:00
Colin Cross
c2f44a9df9 ARM: tegra: clock: Fix clock issues in suspend
The PLLP registers are now being restored by the low-level resume code,
and the CPU may be running off PLLP, so don't touch them during clock
resume.

Save plld, plls, pllu, and audio clock during suspend (originally
fixed by Mayuresh Kulkarni <mkulkarni@nvidia.com>)

The lock time for plld is 1000 us, so increase the delay after
setting the PLLs.

Add a BUG_ON to ensure the size of the suspend context area is
correct.

Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-21 00:16:47 -08:00
Colin Cross
9743b38969 ARM: tegra: clock: Add function to set SDMMC tap delay
The SDMMC controllers have extra bits in the clock source
register that adjust the delay between the clock and data
to compenstate for delays on the PCB.  The values need to
be set from the clock code so the clock can be locked
during the read-modify-write on the clock source register.

Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-21 00:16:47 -08:00
Colin Cross
7a28128412 ARM: tegra: cpufreq: Adjust memory frequency with cpu frequency
Adjusts the minimum memory frequency when the cpu frequency
changes.  The values are currently hardcoded to a reasonable
default.  If memory frequency scaling is not enabled this
patch will have no effect.

Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-21 00:16:46 -08:00
Colin Cross
6d2968284f ARM: tegra: clocks: Add emc scaling
Add clock ops on the emc peripheral clock that call into the
emc driver to update the memory controller registers for the
new frequency.  Tegra has an interlock between the clock
controller and the memory controller that prevents the new
register values from taking effect until the clock frequency
update occurs.

Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-21 00:16:45 -08:00
Colin Cross
efdf72ad5c ARM: tegra: Add external memory controller driver
The frequency memory bus on Tegra can be adjusted without
disabling accesses to memory by updating the memory
configuration registers from a per-board table, and then
changing the clock frequency.  The clock controller and
memory controller have an interlock that prevents the
new memory registers from taking effect until the
clock frequency change.

Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-21 00:16:45 -08:00
Colin Cross
4db4afb4df ARM: tegra: clock: Minor cleanups
Remove unnecessary uses of #ifdef CONFIG_DEBUG_FS
Convert bool assignments from 1 to true

Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-21 00:10:46 -08:00
Colin Cross
310992ca4b ARM: tegra: clock: Add shared bus clock type
Some clocks may have multiple downstream users that need to request a
higher clock rate.  Shared bus clocks provide a unique shared_bus_user
clock to each user.  The frequency of the bus is set to the highest
enabled shared_bus_user clock, with a minimum value set by the
shared bus.  Drivers can use clk_enable and clk_disable to enable
or disable their requirement, and clk_set_rate to set the minimum rate.

Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-21 00:10:46 -08:00
Colin Cross
89a5fb84da ARM: tegra: cpufreq: Take an extra reference to pllx
During cpu frequency changes, take an extra reference to pllx so
that it doesn't turn off and on while the cpu is temporarily on
pllp.  If the cpu is moved to pllp permanently, pllx will be
turned off.

Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-21 00:10:45 -08:00
Colin Cross
4729fd7a7d ARM: tegra: clock: Convert global lock to a lock per clock
Give each clock its own lock, and remove all lock traversals from
parent to child clocks to prevent AB-BA deadlocks.

This brings the locking in line with the common struct clk
patches and should make conversion simple.

Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-21 00:10:43 -08:00
Colin Cross
f151961173 ARM: tegra: clock: Move unshared clk struct members into union
Creates a union of a struct for each type of clock to reduce memory
usage and clarify which members are used by all clocks and which are
used by a single type.

Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-21 00:10:11 -08:00
Colin Cross
3ec349fbf1 ARM: tegra: clock: Rearrange static clock tables
Make the static clocks look more like the array of clocks
so they can all be initalized with the same helper function.

Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-21 00:10:10 -08:00
Colin Cross
41cfe3676d ARM: tegra: clock: Drop CPU dvfs
The existing version did not extend well to core dvfs, drop it
for now until the new clk api with clk_prepare and clk_unprepare
is ready and non-atomic clocks are possible.

Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-21 00:10:06 -08:00
Colin Cross
f035530b79 ARM: tegra: clock: Initialize clocks that have no enable
Assume that any clock that has no enable op is always on.

Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-21 00:09:12 -08:00
Colin Cross
35c47c3bba ARM: tegra: clock: Don't use PLL lock bits
The PLL lock bits are not reliable, use per-PLL timeouts instead.

Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-20 23:36:50 -08:00
Colin Cross
bd41ef55e8 ARM: tegra: clock: Drop debugging
Drop the unnecessary pr_debug calls to avoid having to maintain them.

Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-20 23:36:50 -08:00
Colin Cross
14133add42 ARM: tegra: clock: Don't BUG on changing an enabled PLL
When updating the CPU PLL frequency, keeping the PLL enabled avoids
ramping the PLL all the way down and back up again.  Remove the BUG_ON
in tegra2_pll_clk_set_rate to allow the rate to change while the PLL
is enabled.

Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-20 23:36:50 -08:00
Dima Zavin
2b84cb4faa ARM: tegra: clock: enable clk reset for non-peripheral clocks
Add a new 'reset' clk op. This can be provided for any clock,
not just peripherals.

Signed-off-by: Dima Zavin <dima@android.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-20 23:36:49 -08:00
Simon Glass
375b19cd34 ARM: tegra: Fix hang on reboot
This seems to be a regression in 2.6.37.

We cannot use writel() here since the resulting wmb() calls l2x0_cache_sync()
which uses a spinlock and L1 cache may be off at this point.

http://lists.infradead.org/pipermail/linux-arm-kernel/2011-February/041909.html

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-20 20:04:16 -08:00
Stephen Warren
1ca00347c5 ARM: tegra: APB DMA: Enable clock and remove reset.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-20 20:04:15 -08:00