Commit Graph

77 Commits

Author SHA1 Message Date
Alexandre Belloni
24a0f5c539 ARM: at91: pm: Add sama5d2 backup mode
The sama5d2 has a mode were it is possible to cut power to the SoC while
keeping the RAM in self refresh.
Resuming from that mode needs support in the firmware/bootloader.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Wenyou Yang <wenyou.yang@atmel.com>
2017-05-15 11:55:17 +02:00
Alexandre Belloni
1346919285 ARM: at91: pm: Merge all at91sam9*_pm_init
The PM initialization is now identical for all at91sam9. Merge the
functions.

Acked-by: Wenyou Yang <wenyou.yang@atmel.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-03-31 20:36:09 +02:00
Alexandre Belloni
6c38bda9ae ARM: at91: remove useless includes and function prototypes
Remove leftover from the previous cleanup

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
2016-02-17 17:53:02 +01:00
Alexandre Belloni
fbc7edca5a ARM: at91: pm: move idle functions to pm.c
Avoid using code from clk/at91 for PM.
This also has the bonus effect of setting arm_pm_idle for sama5 platforms.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
2016-02-17 17:53:02 +01:00
Alexandre Belloni
bbfc97e1b1 ARM: at91: properly initialize timer
Use clocksource_of_init to initialize the system timer instead of relying on a
custom function.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-03-16 17:03:04 +01:00
Alexandre Belloni
0d3441928b ARM: at91: remove unused at91_ioremap_matrix and header
at91_ioremap_matrix and the at91_matrix.h header are not used anymore, remove
them.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-03-13 15:11:04 +01:00
Arnd Bergmann
a91c5824dd ARM: at91: fix pm declarations
In a recent rearrangement of the at91 pm initialization code, a broken
set of declarations was added for the !CONFIG_PM-case, leading to
this link error:

arch/arm/mach-at91/board-dt-sama5.o: In function `at91_rm9200_pm_init':
arch/arm/mach-at91/generic.h:40: multiple definition of `at91_rm9200_pm_init'
arch/arm/mach-at91/setup.o:arch/arm/mach-at91/generic.h:40: first defined here
arch/arm/mach-at91/board-dt-sama5.o: In function `at91_sam9260_pm_init':
arch/arm/mach-at91/generic.h:41: multiple definition of `at91_sam9260_pm_init'
arch/arm/mach-at91/setup.o:arch/arm/mach-at91/generic.h:41: first defined here
arch/arm/mach-at91/board-dt-sama5.o: In function `at91_sam9g45_pm_init':
arch/arm/mach-at91/generic.h:42: multiple definition of `at91_sam9g45_pm_init'
arch/arm/mach-at91/setup.o:arch/arm/mach-at91/generic.h:42: first defined here

This adds the missing 'static inline' to the declarations to avoid
creating a copy of the functions in each file that includes the
header.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 4db0ba22da ("ARM: at91: pm: prepare for multiplatform")
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-02-18 12:20:26 +01:00
Nicolas Ferre
ad3fc3e316 ARM: at91/trivial: unify functions and machine names
Remove the string "(Device Tree)" after the machine name because all AT91
machines use the DT nowadays.
Also change some function names to unify following the convention:
- at91sam9xxx aren't named sam9, 9xxx but with the full name
- sama5 are the ones that don't have the at91 prefix anymore.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-02-02 11:01:29 +01:00
Alexandre Belloni
827de1f123 ARM: at91: remove at91_dt_initialize and machine init_early()
Move the ramc initialization to pm.c as it is the only user left.
This allows us to get rid of at91_dt_initialize() that was the only one called
by the init_early() function pointer of struct machine_desc.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
[nicolas.ferre@atmel.com: adapt patch to newer series]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-02-02 11:01:29 +01:00
Nicolas Ferre
bf02280e43 ARM: at91: fix PM initialization for newer SoCs
Newer SoCs: at91sam9x5, at91sam9n12, sama5d3 and sama5d4 embed a DDR controller
and have a different PMC status register layout than the at91sam9g45. Create
another at91_sam9x5_pm_init() function to match this compatibility.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-01-26 13:43:33 +01:00
Alexandre Belloni
29ee506d0d ARM: at91: move at91rm9200_idle() to clk/at91/pmc.c
Move at91rm9200_idle() along with at91sam9_idle() in clk/at91/pmc.c.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Michael Turquette <mturquette@linaro.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-01-16 18:08:42 +01:00
Alexandre Belloni
0be0b8cd49 ARM: at91: remove unused at91_init_sram
SRAM initialization is now done through the mmio-sram driver and
at91_init_sram() is not called anymore, remove it.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-01-16 18:08:42 +01:00
Alexandre Belloni
4db0ba22da ARM: at91: pm: prepare for multiplatform
Split at91_pm_init() in three variants that are called by the respective SoCs
.init_machine. This allows to remove the of_machine_is_compatible() calls and
move at91_pm_init() out of arch_initcall() which is required for multiplatform.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-01-16 18:08:40 +01:00
Alexandre Belloni
bd87373229 ARM: at91: remove useless at91rm9200_set_type()
Since all rm9200 board files have been removed, there is no user of
at91rm9200_set_type() left. Remove it

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-01-15 15:24:06 +01:00
Alexandre Belloni
427accd3c4 ARM: at91: remove useless at91rm9200_dt_initialize()
at91rm9200_dt_initialize() is doing the same as at91_dt_initialize(), use that
one instead.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-01-15 15:24:06 +01:00
Alexandre Belloni
415c947435 ARM: at91: remove useless at91_sysirq_mask_rtx
The irq fixup from at91_sysirq_mask_rtc and at91_sysirq_mask_rtt is now handled
by aic_common_rtc_irq_fixup and aic_common_rtt_irq_fixup. Remove those useless
functions.
Also remove the now unused mach/at91_rtt.h header.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-01-15 15:24:05 +01:00
Arnd Bergmann
50755f6f03 ARM: at91/clocksource: remove !DT PIT initializations
As AT91 !DT code is now removed, cleanup the PIT clocksource driver.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[nicolas.ferre@atmel.com: split patch]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Boris BREZILLON <boris.brezillon@free-electrons.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
2014-12-03 14:15:52 +01:00
Arnd Bergmann
8117bf17fe ARM: at91: at91rm9200 ST initialization is now DT only
As at91rm9200 is now DT only, there is no need to keep old entry point in this
at91rm9200 System Timer (ST) driver.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[nicolas.ferre@atmel.com: split patch]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2014-12-02 16:59:07 +01:00
Arnd Bergmann
85c4b31e6e ARM: at91: remove old AT91-specific drivers
GPIO and LED drivers were replaced by generic ones for DT boards. These drivers
were remaining: delete them now. Modifications are also done on the
corresponding header files.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[nicolas.ferre@atmel.com: split patch]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2014-12-02 16:59:06 +01:00
Arnd Bergmann
865a381223 ARM: at91: cleanup initilisation code by removing dead code
The AT91-specific SoC strucutre "struct at91_init_soc" was filled with specific
!DT initilisation functions. Now that we got rid of the !DT board file
description, remove unneeded functions.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[nicolas.ferre@atmel.com: split patch]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2014-12-02 16:59:06 +01:00
Nicolas Ferre
4a109c50d1 ARM: at91: remove unused IRQ function declarations
Since 3b26f39b0a (ARM: at91: make use of the new AIC driver for dt enabled
boards) the old IRQ initialisation functions aren't used anymore: remove their
declaration in generic.h.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
2014-11-27 16:33:06 +01:00
Nicolas Ferre
1ccdde057b ARM: at91: remove legacy IRQ driver and related code
Remove irc.c and associated header file. The related code was idendified by
the CONFIG_OLD_IRQ_AT91 option that was removed previously. It has been spotted
by following coccinelle semantic match:

@rule1@
expression E;
statement S;
@@
(
- if (IS_ENABLED(CONFIG_OLD_IRQ_AT91)) S
|
- if (IS_ENABLED(CONFIG_OLD_IRQ_AT91) && E) S
)

Cc: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
2014-11-27 16:18:00 +01:00
Nicolas Ferre
ff78a189b0 ARM: at91: remove old at91-specific clock driver
This clock driver collection was specific to AT91 and only used in !DT cases.
All clocks and the clock trees for all Atmel SoCs are now described by drivers
using the common clock framework.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
2014-11-26 18:43:44 +01:00
Nicolas Ferre
7538ec7d1e ARM: at91: remove no-MMU at91x40 support
As there is currently no-one to take care of this old !MMU target and as its
support in recent kernels is a bit rotten, remove this at91x40 support and the
board file associated with it (at91eb01).
There are modern ARM !MMU in Mainline now so this target is not interesting for
building tests anymore. It would be better to start from these modern ARM !MMU
platforms to reintroduce at91x40 support if needed.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2014-11-03 18:48:00 +01:00
Linus Torvalds
8b45bc892e ARM: SoC driver updates for 3.18
These are changes for drivers that are intimately tied to some SoC
 and for some reason could not get merged through the respective
 subsystem maintainer tree.
 
 Most of the new code is for the Keystone Navigator driver, which is
 new base support that is going to be needed for their hardware
 accelerated network driver and other units.
 
 Most of the commits are for moving old code around from at91 and omap
 for things that are done in device drivers nowadays.
 
 - at91: move reset, poweroff, memory and clocksource code into drivers
   directories
 - socfpga: add edac driver (through arm-soc, as requested by Boris)
 - omap: move omap-intc code to drivers/irqchip
 - sunxi: added an RTC driver for sun6i
 - omap: mailbox driver related changes
 - keystone: support for the "Navigator" component
 - versatile: new reboot, led and soc drivers
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Merge tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver updates from Arnd Bergmann:
 "These are changes for drivers that are intimately tied to some SoC and
  for some reason could not get merged through the respective subsystem
  maintainer tree.

  Most of the new code is for the Keystone Navigator driver, which is
  new base support that is going to be needed for their hardware
  accelerated network driver and other units.

  Most of the commits are for moving old code around from at91 and omap
  for things that are done in device drivers nowadays.

   - at91: move reset, poweroff, memory and clocksource code into
     drivers directories
   - socfpga: add edac driver (through arm-soc, as requested by Boris)
   - omap: move omap-intc code to drivers/irqchip
   - sunxi: added an RTC driver for sun6i
   - omap: mailbox driver related changes
   - keystone: support for the "Navigator" component
   - versatile: new reboot, led and soc drivers"

* tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (92 commits)
  bus: arm-ccn: Fix spurious warning message
  leds: add device tree bindings for register bit LEDs
  soc: add driver for the ARM RealView
  power: reset: driver for the Versatile syscon reboot
  leds: add a driver for syscon-based LEDs
  drivers/soc: ti: fix build break with modules
  MAINTAINERS: Add Keystone Multicore Navigator drivers entry
  soc: ti: add Keystone Navigator DMA support
  Documentation: dt: soc: add Keystone Navigator DMA bindings
  soc: ti: add Keystone Navigator QMSS driver
  Documentation: dt: soc: add Keystone Navigator QMSS bindings
  rtc: sunxi: Depend on platforms sun4i/sun7i that actually have the rtc
  rtc: sun6i: Add sun6i RTC driver
  irqchip: omap-intc: remove unnecessary comments
  irqchip: omap-intc: correct maximum number or MIR registers
  irqchip: omap-intc: enable TURBO idle mode
  irqchip: omap-intc: enable IP protection
  irqchip: omap-intc: remove unnecesary of_address_to_resource() call
  irqchip: omap-intc: comment style cleanup
  irqchip: omap-intc: minor improvement to omap_irq_pending()
  ...
2014-10-08 17:37:16 -04:00
Nicolas Ferre
726d32bf79 ARM: at91: SAMA5D4 SoC detection code and low level routines
SoC identification code, kernel uncompress and low level
debugging routines update.
On SAMA5D4, DBGU is at another address AT91_BASE_DBGU2 so another
round of detection is needed. We also had to differentiate with
SAMA5D3 SoC family and rename some variables.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2014-09-22 11:39:06 +02:00
Maxime Ripard
7d80335e29 ARM: at91: Give the PIT irq as an argument of at91sam926x_pit_init
This allows to remove the dependency of the timer driver on mach/hardware.h and
having an hardcoded interrupt number in the driver itself.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2014-09-15 17:55:47 +02:00
Maxime Ripard
d2992e51e7 ARM: at91: soc: Add init_time callback
Introduce an init_time callback to the at91_init_soc structure to be able to
tweak the init_time machine callback on a per-soc basis, instead of having to
rely on a global one.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

Conflicts:
	arch/arm/mach-at91/setup.c
2014-09-03 10:55:45 +02:00
Maxime Ripard
1bd59dbe53 ARM: at91: generic.h: Add include safe guards
The generic.h header file doesn't have any safe guards against multiple
inclusion. It only worked so far because all the symbols defined in it were
extern, but this is a rather fragile assumption.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2014-09-02 18:52:17 +02:00
Maxime Ripard
351a4ffea2 ARM: at91: Remove rstc and shdwnc global base addresses
Now that there's no user left for the global variables holding the reset and
shutdown controllers base address, we can remove these variables and their
associated mapping function.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2014-08-25 16:27:33 +02:00
Maxime Ripard
99d63fa1c8 ARM: at91: Remove reset code from the machine code
Now that the transition is over and that we probe our reset driver in every
case, we can remove the legacy code from the machine directory.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2014-08-25 16:06:22 +02:00
Maxime Ripard
65f2ce96a9 ARM: at91/soc: Introduce register_devices callback
Some core devices should be registered by the SoC itself rather than by every
board using this SoC. Introduce a register_devices callback that should be
called during the init_machine in order to do that.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2014-08-25 16:04:26 +02:00
Boris BREZILLON
c8a8c63008 ARM: at91: add Kconfig options for common clk support
This patch adds the following Kconfig options to prepare the transition to
common clk framework:

- AT91_USE_OLD_CLK: this option is selected by every SoC which does not
  support new at91 clks based on common clk framework (SoC which does not
  define the clock tree in its device tree).
  This options is also selected when the user choose non dt boards support
  (new at91 clks can only be registered from a device tree definition).

- COMMON_CLK_AT91: this option cannot be selected directly. Instead it is
  enabled if these 3 conditions are met:
   * at least one of the selected SoCs have a PMC (Power Management
     Controller) Unit
   * device tree support is enabled
   * the old at91 clk implementation is disabled (every selected SoC define
     its clks in its device tree and non dt boards support is disabled)

- OLD_CLK_AT91: this option cannot be selected directly. Instead it is
  enabled if these 2 conditions are met:
   * at least one of the selected SoCs have a PMC (Power Management
     Controller) Unit
   * at least one of the selected SoCs does not define its clks in its
     device tree or non dt-boards support is enabled

This patch selects AT91_USE_OLD_CLK in all currently supported SoCs. These
selects will be removed after clk definitions are properly added in each
soc's device tree.
It also selects AT91_USE_OLD_CLK in all non-dt boards support.

AT91_PMC_UNIT references are replaced by OLD_CLK_AT91, because PMC Unit is
enabled for both old and common clk implementations, and old clk
implementation should not be compiled if COMMON_CLK is enabled.

To avoid future link errors, a new stub is created for at91_dt_clock_init
function if OLD_CLK_AT91 is disabled.

A new check is added in dt init functions (setup.c) to prepare for SoCs
supporting new clk implementation. These SoCs won't setup the
register_clocks callback (clk registration is done using of_clk_init).

Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-12-02 15:22:52 +01:00
Johan Hovold
94c4c79f2f ARM: at91: fix hanged boot due to early rtt-interrupt
Make sure the RTT-interrupts are masked at boot by adding a new helper
function to be used at SOC-init.

This fixes hanged boot on all AT91 SOCs with an RTT, for example, if an
RTT-alarm goes off after a non-clean shutdown (e.g. when using RTC
wakeup).

The RTC and RTT-peripherals are powered by backup power (VDDBU) (on all
AT91 SOCs but RM9200) and are not reset on wake-up, user, watchdog or
software reset. This means that their interrupts may be enabled during
early boot if, for example, they where not disabled during a previous
shutdown (e.g. due to a buggy driver or a non-clean shutdown such as a
user reset). Furthermore, an RTC or RTT-alarm may also be active.

The RTC and RTT-interrupts use the shared system-interrupt line, which
is also used by the PIT, and if an interrupt occurs before a handler
(e.g. RTC-driver) has been installed this leads to the system interrupt
being disabled and prevents the system from booting.

Note that when boot hangs due to an early RTC or RTT-interrupt, the only
way to get the system to start again is to remove the backup power (e.g.
battery) or to disable the interrupt manually from the bootloader. In
particular, a user reset is not sufficient.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: stable@vger.kernel.org # 3.11.x
2013-11-15 12:13:33 +01:00
Johan Hovold
6de714c21a ARM: at91: fix hanged boot due to early rtc-interrupt
Make sure the RTC-interrupts are masked at boot by adding a new helper
function to be used at SOC-init.

This fixes hanged boot on all AT91 SOCs with an RTC (but RM9200), for
example, after a reset during an RTC-update or if an RTC-alarm goes off
after shutdown (e.g. when using RTC wakeup).

The RTC and RTT-peripherals are powered by backup power (VDDBU) (on all
AT91 SOCs but RM9200) and are not reset on wake-up, user, watchdog or
software reset. This means that their interrupts may be enabled during
early boot if, for example, they where not disabled during a previous
shutdown (e.g. due to a buggy driver or a non-clean shutdown such as a
user reset). Furthermore, an RTC or RTT-alarm may also be active.

The RTC and RTT-interrupts use the shared system-interrupt line, which
is also used by the PIT, and if an interrupt occurs before a handler
(e.g. RTC-driver) has been installed this leads to the system interrupt
being disabled and prevents the system from booting.

Note that when boot hangs due to an early RTC or RTT-interrupt, the only
way to get the system to start again is to remove the backup power (e.g.
battery) or to disable the interrupt manually from the bootloader. In
particular, a user reset is not sufficient.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: stable@vger.kernel.org # 3.11.x
2013-11-15 12:13:33 +01:00
Robin Holt
7b6d864b48 reboot: arm: change reboot_mode to use enum reboot_mode
Preparing to move the parsing of reboot= to generic kernel code forces
the change in reboot_mode handling to use the enum.

[akpm@linux-foundation.org: fix arch/arm/mach-socfpga/socfpga.c]
Signed-off-by: Robin Holt <holt@sgi.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Russ Anderson <rja@sgi.com>
Cc: Robin Holt <holt@sgi.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-09 10:33:29 -07:00
Jean-Christophe PLAGNIOL-VILLARD
546c830c90 ARM: at91: fix at91_extern_irq usage for non-dt boards
Since 4b68520dc0ec96153bc0d87bca5ffba508edfcf
ARM: at91: add AIC5 support

we allocate the at91_extern_irq.

This patch makes it static and stores the non-dt extern irq in the soc
structure. It is then possible to use a at91_get_extern_irq() function
to get the value for outside of the irq driver. It is useful for passing
its value to at91_aic_init().

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
[nicolas.ferre@atmel.com: rework commit message]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-06-21 16:35:26 +02:00
Stephen Warren
6bb27d7349 ARM: delete struct sys_timer
Now that the only field in struct sys_timer is .init, delete the struct,
and replace the machine descriptor .timer field with the initialization
function itself.

This will enable moving timer drivers into drivers/clocksource without
having to place a public prototype of each struct sys_timer object into
include/linux; the intent is to create a single of_clocksource_init()
function that determines which timer driver to initialize by scanning
the device dtree, much like the proposed irqchip_init() at:
http://www.spinics.net/lists/arm-kernel/msg203686.html

Includes mach-omap2 fixes from Igor Grinberg.

Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
2012-12-24 09:36:38 -07:00
Linus Walleij
17d6b293e7 Merge branch 'delivery/pinctrl-at91-3.8' of http://github.com/at91linux/linux-at91 into at91 2012-11-21 10:48:33 +01:00
Joachim Eastwood
397f8c3ca3 ARM: AT91: Add AT91RM9200 DT board
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2012-11-19 07:51:09 +08:00
Nicolas Ferre
738a0fd752 ARM: at91: fix external interrupts in non-DT case
Management of external interrupts has changed but the
non-DT code has not integrated these changes.
Add a mask to pass external irq specification from SoC
specific code to the at91_aic_init() function.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Cc: stable <stable@vger.kernel.org> [v3.6]
2012-10-24 18:08:40 +02:00
Ludovic Desroches
c4b68520dc ARM: at91: add AIC5 support
The number of lines of AIC5 has increased from 32 to 128. Due to this
increase, a source select register has been introduced for the interrupt
line selection. Moreover, register mapping has been changed. For that reasons,
we need some dedicated callbacks for AIC5.
Power management is also concerned by these changes. On suspend, we can't get
the whole interrupt mask register as before, we have to read this register 128
times. To reduce this overhead, a snapshot of the whole IMR is maintained.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-07-02 14:31:00 +02:00
Jean-Christophe PLAGNIOL-VILLARD
a27fa58117 ARM: at91: drop at91_set_serial_console
at91_set_serial_console is used to define the default console of linux.
This is already manage by the cmdline. And if the boot loader can not be
modified you can still set it by enabling the CONFIG_CMDLINE_EXTEND option.
And then the command-line arguments provided by the boot loader will be
appended to the default kernel command string.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-04-17 11:03:46 +02:00
Jean-Christophe PLAGNIOL-VILLARD
eb5e76ffd4 ARM: at91: add pmc DT support
Specified the main Oscillator via clock binding.
This will allow to do not hardcode it anymore in the DT board at 12MHz.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-03-15 23:31:14 +08:00
Jean-Christophe PLAGNIOL-VILLARD
2b11ea5bf2 ARM: at91/dt: add specific DT soc init
This will allow to have static Device mapping and DT probe mapping for the
System Controller.

Temporary keep the call to ioremap_registers() until we have the binding
for the SDRAM/DDR Controller.

Temporary keep the main clock hardcoded to 12MHz until we have the binding
for the PMC.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-03-15 23:30:05 +08:00
Nicolas Ferre
8014d6f4dd ARM: at91: AIC and GPIO IRQ device tree initialization
Both AIC and GPIO controllers are now using the standard of_irq_init()
function to initialize IRQs in case of DT use.
The DT specific initialization functions are now separated from the
non-DT case and are now using "linear" irq domains.
The .map() irqdomain operation is responsible for positioning the IRQ
handlers. In AIC case, the Linux IRQ number is directly programmed in
the hardware to avoid an additional reverse mapping operation.
The AIC position its irq domain as the "default" irq domain.

For DT case, the priority is not yet filled in the SMR. It will be the
subject of another patch.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-03-01 13:29:03 +01:00
Jean-Christophe PLAGNIOL-VILLARD
f363c407b4 ARM: at91: make sdram/ddr register base soc independent
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-02-23 14:57:56 +01:00
Jean-Christophe PLAGNIOL-VILLARD
5e9cf5e18d ARM: at91: make ST (System Timer) soc independent
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Reviewed-by: Ryan Mallon <rmallon@gmail.com>
2012-02-23 09:26:01 +01:00
Jean-Christophe PLAGNIOL-VILLARD
4342d6479e ARM: at91: make matrix register base soc independent
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Reviewed-by: Ryan Mallon <rmallon@gmail.com>
Cc: linux-usb@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-23 09:24:46 +01:00
Jean-Christophe PLAGNIOL-VILLARD
0d78171672 ARM: at91: factorise duplicated at91sam9 idle
Remove duplicated at91sam9xxxx_idle() functions introduced
by commit c9dfafb "ARM: mach-at91: move special idle code out of line".
Replace by a generic at91sam9_idle() function in setup.c common
location.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-02-17 17:54:05 +01:00