Commit Graph

1037 Commits

Author SHA1 Message Date
Russell King 8975b6c0fd ARM: SMP: Clean up ncores sanity checks
scu_get_core_count() never returns zero cores, so we don't need to
check and correct if ncores is zero.

Tegra was missing the check against NR_CPUS, leading to a potential
bitfield overflow if this becomes the case.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-20 15:08:27 +00:00
Russell King 7627dc802a ARM: GIC: private a standard get_irqnr_preamble assembler macro
Provide a standard get_irqnr_preamble assembler macro for platforms
to use, which retrieves the base address of the GIC CPU interface
from gic_cpu_base_addr.  Allow platforms to override this by defining
HAVE_GET_IRQNR_PREAMBLE.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-14 19:21:47 +00:00
Russell King 384895330e ARM: GIC: Remove MMIO address from gic_cpu_init, rename to gic_secondary_init
We don't need to re-pass the base address for the CPU interfaces to the
GIC for secondary CPUs, as it will never be different from the boot CPU
- and even if it was, we'd overwrite the boot CPU's base address.

Get rid of this argument, and rename to gic_secondary_init().

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-14 19:21:40 +00:00
Russell King b580b899dd ARM: GIC: provide a single initialization function for boot CPU
Provide gic_init() which initializes the GIC distributor and current
CPU's GIC interface for the boot (or single) CPU.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-14 19:21:30 +00:00
Russell King a0b7bd0829 ARM: io: make iounmap() a simple macro
Defining iounmap() with arguments prevents it from being used as a
function pointer, causing platforms to work around this.  Instead,
define it to be a simple macro.

Do the same for __arch_io(re|un)map too.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-08 13:57:04 +00:00
Magnus Damm 0005b349d5 ARM: 6478/1: Use shared GIC entry macros on Tegra
Use the GIC demux code in asm/hardware/entry-macro-gic.S
on the Tegra subarchitecture.

Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-07 09:20:25 +00:00
Olof Johansson da8f2e2461 ARM: tegra: fix regression from addruart rewrite
Commit 0ea1293009 ("arm: return both physical and virtual addresses
from addruart") took out the test for MMU on/off but didn't switch the
ldr instructions to no longer be conditionals based on said test.

Fix that.

Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Colin Cross <ccross@android.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-12-06 20:07:57 -08:00
Russell King ad3b6993b9 ARM: SMP: pass an ipi number to smp_cross_call()
This allows us to use smp_cross_call() to trigger a number of different
software generated interrupts, rather than combining them all on one
SGI.  Recover the SGI number via do_IPI.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-03 08:26:30 +00:00
Russell King d92e04713c ARM: remove obsolete smp_cross_call_done()
smp_cross_call_done() was removed long ago (see 78d236c - remove useless
smp_cross_call_done()).  Remove those which have been subsequently
merged.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-03 08:26:30 +00:00
Jean-Christop PLAGNIOL-VILLARD 6d803ba736 ARM: 6483/1: arm & sh: factorised duplicated clkdev.c
factorise some generic infrastructure to assist looking up struct clks
for the ARM & SH architecture.

as the code is identical at 99%

put the arch specific code for allocation as example in asm/clkdev.h

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-11-26 10:51:04 +00:00
Zimny Lech 61d8e11e51 Remove duplicate includes from many files
Signed-off-by: Zimny Lech <napohybelskurwysynom2010@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-10-27 18:03:18 -07:00
Mike Rapoport f2a443931e tegra: harmony: enable PCI Express
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
CC: Olof Johansson <olof@lixom.net>
CC: Gary King <GKing@nvidia.com>
Signed-off-by: Colin Cross <ccross@android.com>
2010-10-21 18:13:10 -07:00
Mike Rapoport 77ffc1465c tegra: add PCI Express support
Change-Id: Ibd0bcd46895eb88952b9db29e1f68572d39aae01
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Acked-by: Arnd Bergmann <arnd@arndb.de>
CC: Russell King <linux@arm.linux.org.uk>
CC: Gary King <GKing@nvidia.com>
Signed-off-by: Colin Cross <ccross@android.com>
2010-10-21 18:13:02 -07:00
Mike Rapoport 8d685bc5e5 tegra: add PCI Express clocks
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
CC: Gary King <GKing@nvidia.com>
Signed-off-by: Colin Cross <ccross@android.com>
2010-10-21 18:12:57 -07:00
Colin Cross 4de3a8fa33 [ARM] tegra: Add APB DMA support
The APB DMA block handles DMA transfers to and from some peripherals
in the Tegra SOC.  It reads from sequential addresses on the memory
bus, and writes repeatedly to the same address on the APB bus.

Two transfer modes are supported, oneshot for transferring a known
size to or from a peripheral, and continuous for streaming data.
In continuous mode, a callback occurs when the buffer is half full
to allow the existing data to be handled and a new request queued.x

v2 changes:
	dma API no longer uses PTR_ERR

Signed-off-by: Erik Gilling <konkers@android.com>
Signed-off-by: Colin Cross <ccross@android.com>
2010-10-21 18:12:35 -07:00
Colin Cross 7056d423f1 [ARM] tegra: Add cpufreq support
Implement cpufreq support for the Tegra SOC.  DVFS is handled by the
core virtual cpu clock.  The frequencies of the two cores are tied
together, the highest frequency requested by either core determines
the actual frequency.

Signed-off-by: Colin Cross <ccross@android.com>
2010-10-21 18:12:28 -07:00
Colin Cross 8486bddc09 [ARM] tegra: common: Update common clock init table
Renames clocks in the clock init table to match the datasheet names

Signed-off-by: Colin Cross <ccross@android.com>
2010-10-21 18:12:22 -07:00
Colin Cross 71fc84cc35 [ARM] tegra: clock: Add dvfs support, bug fixes, and cleanups
- Add drivers to clock lookup table
- Add new pll_m entries
- Support I2C U16 divider
- Fix rate reporting on 32.768kHz clock
- Call propagate rate only if set_rate succeeds
- Add support for audio_sync clock
- Add 24MHz to PLLA frequency list
- Correct i2s1/2/spdifout mux
- Add suspend support
- Fix enable/disable parent clocks in set_parent
- Add max_rate parameter to all clocks
- DVFS support
- Add virtual cpu clock with dvfs
- Support clk_round_rate
- Fix requesting very high periph frequencies
- Add quirks for PLLU:
   PLLU is slightly different from the rest of the PLLs.  The
   lock enable bit is at bit 22 instead of 18 in the MISC
   register, and the post divider field is a single bit with
   reversed values from other PLLs.
- Simplify recalculating clock rates
- Fix UART divider flags
- Remove unused clock ops

Signed-off-by: Colin Cross <ccross@android.com>
2010-10-21 18:12:19 -07:00
Colin Cross 73625e3e2e [ARM] tegra: Add support for reading fuses
The Tegra SOC contains fuses to identify the CPU type and
bin, and a unique id.  The CPU info is required to determine
the correct voltages for each cpu and core frequency.

Signed-off-by: Colin Cross <ccross@android.com>
2010-10-21 18:12:09 -07:00
Colin Cross 2e47b8b3c2 [ARM] tegra: gpio: Add suspend and wake support
Includes checkpatch fixes and TEGRA_NR_GPIOS changes from
Mike Rapoport <mike@compulab.co.il>

Signed-off-by: Colin Cross <ccross@android.com>
2010-10-21 18:12:01 -07:00
Colin Cross c5f04b8d10 [ARM] tegra: pinmux: add safe values, move tegra2, add suspend
- the reset values for some pin groups in the tegra pin mux can result in
functional errors due to conflicting with actively-configured pin groups
muxing from the same controller. this change adds a known safe, non-
conflicting mux for every pin group, which can be used on platforms
where the pin group is not routed to any peripheral

- also add each pin group's I/O voltage rail, to enable platform code to
map from the pin groups used by each interface to the regulators used
for dynamic voltage control

- add routines to individually configure the tristate, pin mux and pull-
ups for a pingroup_config array, so that it is possible to program
individual values at run-time without modifying other values.
this allows driver power-management code to reprogram individual
interfaces into lower power states during idle / suspend, or to
reprogram the pin mux to support multiple physical busses per
internal controller (e.g., sharing a single I2C or SPI controller
across multiple pin groups)

- move chip-specific data like pingroups and drive-pingroups
out of the common code and into chip-specific code

- fix debug output for group with no pullups

- add a TEGRA_MUX_SAFE function.  Setting a pingroup to TEGRA_MUX_SAFE
will automatically select a mux setting that is guaranteed not to
conflict with any of the hardware blocks.

Signed-off-by: Gary King <gking@nvidia.com>
2010-10-21 18:11:41 -07:00
Gary King 460907bc26 [ARM] tegra: add suspend and mirror irqs to legacy controller
mirror IRQ enable and disable operations on the legacy PPI system
interrupt controller, since the legacy controller is responsible
for responding to wakeup interrupts when the CPU is in LP2 idle mode

save the irq controller state on suspend and restore on resume

Signed-off-by: Gary King <gking@nvidia.com>
2010-10-21 18:11:31 -07:00
Colin Cross 8726e4f50e [ARM] tegra: Add legacy irq support
The "legacy irq controller" duplicates the functionality of the GIC,
but remains powered during the cpu suspend and idle modes that power
down the CPU and the GIC.

Signed-off-by: Colin Cross <ccross@android.com>
2010-10-21 18:11:29 -07:00
Colin Cross c231d6976a [ARM] tegra: update iomap
Add missing io address map entries from datasheet.
Add the IRAM area to the statically mapped io regions.
Correct the onewire, USB, and statmon addresses

Signed-off-by: Colin Cross <ccross@android.com>
2010-10-21 18:11:24 -07:00
Nicolas Pitre 6451d7783b arm: remove machine_desc.io_pg_offst and .phys_io
Since we're now using addruart to establish the debug mapping, we can
remove the io_pg_offst and phys_io members of struct machine_desc.

The various declarations were removed using the following script:

  grep -rl MACHINE_START arch/arm | xargs \
  sed -i '/MACHINE_START/,/MACHINE_END/ { /\.\(phys_io\|io_pg_offst\)/d }'

[ Initial patch was from Jeremy Kerr, example script from Russell King ]

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Acked-by: Eric Miao <eric.miao at canonical.com>
2010-10-20 00:27:46 -04:00
Jeremy Kerr 0ea1293009 arm: return both physical and virtual addresses from addruart
Rather than checking the MMU status in every instance of addruart, do it
once in kernel/debug.S, and change the existing addruart macros to
return both physical and virtual addresses. The main debug code can then
select the appropriate address to use.

This will also allow us to retreive the address of a uart for the MMU
state that we're not current in.

Updated with fixes for OMAP from Jason Wang <jason77.wang@gmail.com>
and Tony Lindgren <tony@atomide.com>, and fix for versatile express from
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>.

Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Jason Wang <jason77.wang@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Tested-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-10-20 00:27:33 -04:00
Russell King 067173526c ARM: Provide common header for hard_smp_processor_id()
Provide a common header to read the SMP CPU number from the MPIDR.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-04 20:20:45 +01:00
Olof Johansson 42537eff86 arm: tegra: VMALLOC_END should be unsigned long
Silences following build warning:

arch/arm/mm/init.c: In function 'mem_init':
arch/arm/mm/init.c:644: warning: format '%08lx' expects type 'long
unsigned int', but argument 12 has type 'unsigned int'

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@google.com>
2010-08-22 12:54:23 -07:00
Olof Johansson a68820db79 arm: tegra: fix compilation of board-harmony.c
The patch "ARM: Remove DISCONTIGMEM support" removed the node id from
the meminfo struct and the PHYS_TO_NID macro, causing compilation errors:

arch/arm/mach-tegra/board-harmony.c: In function 'tegra_harmony_fixup':
arch/arm/mach-tegra/board-harmony.c:94: error: 'struct membank' has no member named 'node'
arch/arm/mach-tegra/board-harmony.c:94: error: implicit declaration of function 'PHYS_TO_NID'
arch/arm/mach-tegra/board-harmony.c:97: error: 'struct membank' has no member named 'node'

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@google.com>
2010-08-22 12:54:14 -07:00
Colin Cross 42a7bf4d26 [ARM] tegra: harmony: Add harmony board file
v2: fixes from Russell King
	- include linux/io.h instead of mach/io.h

v3: fixes from Linus Walleij
	- remove /16 * 16 from UART clock

v3:
	- Fix checkpatch issues
	- make board init calls explicit
	- use clock init table to set clocks
	- remove panel

Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
2010-08-05 14:57:02 -07:00
Erik Gilling a4417c8451 [ARM] tegra: add pinmux support
v2: fixes from Russell King
	- include linux/io.h instead of asm/io.h
v3:
	- Add drive strength controls
	- Replace typedef enums with plain enums

Signed-off-by: Erik Gilling <konkers@android.com>
Signed-off-by: Colin Cross <ccross@android.com>
2010-08-05 14:57:02 -07:00
Erik Gilling 3c92db9ac0 [ARM] tegra: add GPIO support
v2: fixes from Mike Rapoport:
	- move gpio-names.h to arch/arm/mach-tegra
    fixes from Russell King
	- include linux/io.h and linux/gpio.h instead of asm/io.h
	  and asm/gpio.h
    additional changes:
    	- add macros to convert between irq and gpio numbers for platform data
	- change for_each_bit to for_each_set_bit in gpio.c
v3:
	- minor bugfixes

Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
2010-08-05 14:57:02 -07:00
Colin Cross 2d5cd9a38b [ARM] tegra: Add timer support
v2: fixes from Russell King:
	- include linux/io.h instead of asm/io.h
    fixes from Gary King:
	- remove extra (and incorrect) irq definitions
	- use timer 3 instead of timer 1 for compatibility with other drivers
	- fix typo that disabled oneshot mode
v3:
	- Implement sched_clock
	- Fix checkpatch issues
    fixes from Gary King:
    	- Fix incorrect cycles calculation
	- Fix min_delta_ns assignment
    fixes from Linus Walleij:
	- use calc_mult_shift() instead of hard coding values

Signed-off-by: Colin Cross <ccross@android.com>
2010-08-05 14:57:02 -07:00
Colin Cross 1cea7326b3 [ARM] tegra: SMP support
Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
2010-08-05 14:57:01 -07:00
Colin Cross d861196163 [ARM] tegra: Add clock support
v2: fixes from Russell King:
	- include linux/io.h instead of asm/io.h
	- fix whitespace in Kconfig
	- Use spin_lock_init to initialize lock
	- Return -ENOSYS instead of BUG for unimplemented clock ops
	- Use proper return values in tegra2 clock ops
    additional changes:
	- Rename some clocks to match dev_ids
	- add rate propagation
	- add debugfs entries
	- add support for clock listed in clk_lookup under multiple dev_ids
v3:
	- Replace per-clock locking with global clock lock
	- Autodetect clock state on init
	- Let clock dividers pick next lower possible frequency
	- Add support for clock init tables
	- Minor bug fixes
	- Fix checkpatch issues

Signed-off-by: Colin Cross <ccross@android.com>
2010-08-05 14:51:42 -07:00
Erik Gilling 5ad36c5f0e [ARM] tegra: Add IRQ support
v2: fixes from Russell King
	- include linux/io.h instead of asm/io.h and mach/io.h

Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
2010-08-05 14:51:42 -07:00
Erik Gilling c5f800656b [ARM] tegra: initial tegra support
v2: Fixes from Mike Rapoport
	- remove unused header files (mach/dma.h and mach/nand.h)
	- remove tegra 1 references from Makefile.boot

v2: fixes from Russell King
	- remove mach/io.h include from mach/iomap.h
	- fix whitespace in Kconfig

v2: from Colin Cross
	- fix invalid immediate in debug-macro.S

v3:
	- allow selection of multiple boards

Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
2010-08-05 14:51:42 -07:00