26 Sep, 2014
5 commits
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This adds a SoC driver to be used by the ARM RealView
reference boards. We create the "versatile" directory to hold
the different ARM reference designs as per the pattern of the
clk directory layout. The driver utilze the syscon to get to
the register needed. After this we can use sysfs to get at
some SoC properties on RealView DT variants like this:> cd /sysbus/soc/devices/soc0
> ls
board family machine power subsystem
build fpga manufacturer soc_id uevent
> cat family
Versatile
> cat fpga
Multi-layer AXI
> cat board
HBI-0147
> cat build
03Signed-off-by: Linus Walleij
Signed-off-by: Arnd BergmannConflicts:
drivers/soc/Kconfig
drivers/soc/Makefile -
This driver enabled us to drive the reboot of the Versatile family
of ARM reference boards. Even though only the RealView boards are
supported initially, these boards all have the same procedure for
reboot:- Write a magic value into an unlocking register
- Write another magic value into a reset control registerThe driver will be reusable for Versatile and possibly also the
Integrator family of reference boards.Cc: Dmitry Eremin-Solenikov
Cc: David Woodhouse
Acked-By: Sebastian Reichel
Signed-off-by: Linus Walleij
Signed-off-by: Arnd Bergmann -
This makes it possible to create a set of LEDs from a syscon
MFD instance, which is lean mean and clean on the ARM
reference designs and can replace the Versatile LEDs driver
in the long run, as well as other custom syscon LEDs drivers.Cc: Bryan Wu
Cc: Richard Purdie
[Fixed cocinelle warnings]
Signed-off-by: Fengguang Wu
Signed-off-by: Linus Walleij
Signed-off-by: Arnd Bergmann -
…t/tmlind/linux-omap into next/drivers
Merge "part 2 of omap intc changes" from Tony Lindgren:
Second part of omap intc interrupt controller changes to
move it to drivers.Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* tag 'intc-part2-for-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
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()
arm: omap: irq: move irq.c to drivers/irqchip/
irqchip: add irq-omap-intc.h header
arm: omap2: n8x0: move i2c devices to DT -
…git/mripard/linux into next/drivers
Pull "Allwinner drivers additions for 3.18" from Maxime Ripard:
Nothing major, just handling the RTC driver changes needed for the A31/A23.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* tag 'sunxi-drivers-for-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
rtc: sunxi: Depend on platforms sun4i/sun7i that actually have the rtc
rtc: sun6i: Add sun6i RTC driver
25 Sep, 2014
2 commits
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Fixes below build break by not switching to stubs when the driver is a module:
drivers/soc/ti/knav_dma.c:418:7: error: redefinition of 'knav_dma_open_channel'
void *knav_dma_open_channel(struct device *dev, const char *name,
^
In file included from drivers/soc/ti/knav_dma.c:26:0:
include/linux/soc/ti/knav_dma.h:165:21: note: previous definition of 'knav_dma_open_channel' was here
static inline void *knav_dma_open_channel(struct device *dev, const char *name,
^Cc: Santosh Shilimkar
Signed-off-by: Olof Johansson -
…santosh/linux-keystone into next/drivers
Merge "soc: Keystone SOC Navigator drivers for 3.18" from Santosh Shilimkar:
Keystone SOC Navigator drivers for 3.18
The Keystone Multi-core Navigator contains QMSS and packet DMA
subsystems which interwork together to form the Navigator cloud
used by various subsystems like NetCP, SRIO, SideBand Crypto
engines etc.* tag 'drivers-soc-ti-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone:
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 bindingsSigned-off-by: Olof Johansson <olof@lixom.net>
24 Sep, 2014
8 commits
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Signed-off-by: Santosh Shilimkar
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The Keystone Navigator DMA driver sets up the dma channels and flows for
the QMSS(Queue Manager SubSystem) who triggers the actual data movements
across clients using destination queues. Every client modules like
NETCP(Network Coprocessor), SRIO(Serial Rapid IO) and CRYPTO
Engines has its own instance of packet dma hardware. QMSS has also
an internal packet DMA module which is used as an infrastructure
DMA with zero copy.Initially this driver was proposed as DMA engine driver but since the
hardware is not typical DMA engine and hence doesn't comply with typical
DMA engine driver needs, that approach was naked. Link to that
discussion -
https://lkml.org/lkml/2014/3/18/340As aligned, now we pair the Navigator DMA with its companion Navigator
QMSS subsystem driver.Cc: Greg Kroah-Hartman
Cc: Kumar Gala
Cc: Olof Johansson
Cc: Arnd Bergmann
Cc: Grant Likely
Cc: Rob Herring
Cc: Mark Rutland
Signed-off-by: Sandeep Nair
Signed-off-by: Santosh Shilimkar -
The Keystone Navigator DMA driver sets up the dma channels and flows for
the QMSS(Queue Manager SubSystem) who triggers the actual data movements
across clients using destination queues. Every client modules like
NETCP(Network Coprocessor), SRIO(Serial Rapid IO) and CRYPTO
Engines has its own instance of packet dma hardware. QMSS has also
an internal packet DMA module which is used as an infrastructure
DMA with zero copy.Initially this driver was proposed as DMA engine driver but since the
hardware is not typical DMA engine and hence doesn't comply with typical
DMA engine driver needs, that approach was naked. Link to that
discussion -
https://lkml.org/lkml/2014/3/18/340As aligned, now we pair the Navigator DMA with its companion Navigator
QMSS subsystem driver.Cc: Greg Kroah-Hartman
Cc: Kumar Gala
Cc: Olof Johansson
Cc: Arnd Bergmann
Cc: Grant Likely
Cc: Rob Herring
Cc: Mark Rutland
Signed-off-by: Sandeep Nair
Signed-off-by: Santosh Shilimkar -
The QMSS (Queue Manager Sub System) found on Keystone SOCs is one of
the main hardware sub system which forms the backbone of the Keystone
Multi-core Navigator. QMSS consist of queue managers, packed-data structure
processors(PDSP), linking RAM, descriptor pools and infrastructure
Packet DMA.The Queue Manager is a hardware module that is responsible for accelerating
management of the packet queues. Packets are queued/de-queued by writing or
reading descriptor address to a particular memory mapped location. The PDSPs
perform QMSS related functions like accumulation, QoS, or event management.
Linking RAM registers are used to link the descriptors which are stored in
descriptor RAM. Descriptor RAM is configurable as internal or external memory.The QMSS driver manages the PDSP setups, linking RAM regions,
queue pool management (allocation, push, pop and notify) and descriptor
pool management. The specifics on the device tree bindings for
QMSS can be found in:
Documentation/devicetree/bindings/soc/keystone-navigator-qmss.txtCc: Greg Kroah-Hartman
Cc: Kumar Gala
Cc: Olof Johansson
Cc: Arnd Bergmann
Cc: Grant Likely
Cc: Rob Herring
Cc: Mark Rutland
Signed-off-by: Sandeep Nair
Signed-off-by: Santosh Shilimkar -
The QMSS (Queue Manager Sub System) found on Keystone SOCs is one of
the main hardware sub system which forms the backbone of the Keystone
Multi-core Navigator. QMSS consist of queue managers, packed-data structure
processors(PDSP), linking RAM, descriptor pools and infrastructure
Packet DMA.The Queue Manager is a hardware module that is responsible for accelerating
management of the packet queues. Packets are queued/de-queued by writing or
reading descriptor address to a particular memory mapped location. The PDSPs
perform QMSS related functions like accumulation, QoS, or event management.
Linking RAM registers are used to link the descriptors which are stored in
descriptor RAM. Descriptor RAM is configurable as internal or external memory.Cc: Greg Kroah-Hartman
Cc: Kumar Gala
Cc: Olof Johansson
Cc: Arnd Bergmann
Cc: Grant Likely
Cc: Rob Herring
Cc: Mark Rutland
Signed-off-by: Sandeep Nair
Signed-off-by: Santosh Shilimkar -
…mlind/linux-omap into next/drivers
Mailbox related changes for omaps to get it to work with
device tree.* tag 'mailbox-for-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
mailbox/omap: add support for parsing dt devices
Documentation: dt: add omap mailbox bindingsSigned-off-by: Olof Johansson <olof@lixom.net>
-
…nd/linux-omap into next/drivers
Merge "omap intc changes for v3.18 merge window" from Tony Lindgren:
Interrupt code related clean-up for omap2 and 3 to make
it ready to move to drivers/irqchip. Note that this series
does not yet move the interrupt code to drivers, that will
be posted separately as a follow-up series.Note that this branch has a dependency to patches both
in fixes-v3.18-not-urgent and soc-for-v3.18 and is based on
a merge. Without doing the merge, off-idle would not work
properly for git bisect.* tag 'intc-for-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (325 commits)
arm: omap: intc: switch over to linear irq domain
arm: omap: irq: get rid of ifdef hack
arm: omap: irq: introduce omap_nr_pending
arm: omap: irq: remove nr_irqs argument
arm: omap: irq: remove unnecessary header
arm: omap: irq: drop omap2_intc_handle_irq()
arm: omap: irq: drop omap3_intc_handle_irq()
arm: omap: irq: call set_handle_irq() from .init_irq
arm: omap: irq: move some more code around
arm: boot: dts: omap2/3/am33xx: drop ti,intc-size
arm: omap: irq: drop ti,intc-size support
arm: boot: dts: am33xx/omap3: fix intc compatible flag
arm: omap: irq: use compatible flag to figure out number of IRQ lines
arm: omap: irq: add specific compatibles for omap3 and am33xx devices
arm: omap: irq: drop .handle_irq and .init_irq fields
arm: omap: irq: use IRQCHIP_DECLARE macro
arm: omap: irq: call set_handle_irq() from intc_of_init
arm: omap: irq: make intc_of_init static
arm: omap: irq: reorganize code a little bit
arm: omap: irq: always define omap3 support
...Signed-off-by: Olof Johansson <olof@lixom.net>
-
Merge " Second drivers series for AT91/3.18" from Nicolas Ferre:
- move of the PIT (basic timer) from mach-at91 to its proper location:
drivers/clocksource
- big cleanup of this driver along the way* tag 'at91-drivers2' of git://github.com/at91linux/linux-at91:
ARM: at91: PIT: Move the driver to drivers/clocksource
ARM: at91: Give the PIT irq as an argument of at91sam926x_pit_init
ARM: at91: Convert the boards to the init_time callback
ARM: at91: soc: Add init_time callback
ARM: at91: PIT: (Almost) remove the global variables
ARM: at91: PIT: use request_irq instead of setup_irq
ARM: at91: PIT: Use pr_fmt
ARM: at91: PIT: Use consistent exit path in probe
ARM: at91: dt: Remove init_time definitions
ARM: at91: PIT: Rework probe functions
ARM: at91: PIT: Use of_have_populated_dt instead of CONFIG_OF
ARM: at91: PIT: Use DIV_ROUND_CLOSEST to compute the cycles
ARM: at91: generic.h: Add include safe guards
ARM: at91: PIT: Follow the general coding rulesSigned-off-by: Olof Johansson
19 Sep, 2014
2 commits
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Now that we have Kconfig options for individual sunxi platforms, let
the rtc-sunxi driver depend on the platforms that actually have this
hardware, sun4i and sun7i.Signed-off-by: Chen-Yu Tsai
Signed-off-by: Maxime Ripard -
This patch introduces the driver for the RTC in the Allwinner A31 and
A23 SoCs.Unlike the RTC found in A10/A20 SoCs, which was part of the timer, the
RTC in A31/A23 are a separate hardware block, which also contain a few
controls for the RTC block hardware (a regulator and RTC block GPIO pin
latches), while also having separate interrupts for the alarms.The hardware is different enough to make a different driver for it.
Signed-off-by: Chen-Yu Tsai
Reviewed-by: Varka Bhadram
Signed-off-by: Maxime Ripard
17 Sep, 2014
10 commits
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no fuctional changes.
Acked-by: Jason Cooper
Signed-off-by: Felipe Balbi
Signed-off-by: Tony Lindgren -
maximum number of MIR register is 4, rather than 3.
Fix that.Acked-by: Jason Cooper
Signed-off-by: Felipe Balbi
Signed-off-by: Tony Lindgren -
When TURBO bit is set in the INTC_IDLE register,
the input synchronizer clock will be autogated
based on activity on the INTC.Because this idle mode increases the interrupt
latency by 2 clock cycles, we're only enabling
it during suspend.Acked-by: Jason Cooper
Signed-off-by: Felipe Balbi
Signed-off-by: Tony Lindgren -
When PROTECTION bit in enabled in PROTECTION
register, INTC's registers are only accessible
from privileged mode.Acked-by: Jason Cooper
Signed-off-by: Felipe Balbi
Signed-off-by: Tony Lindgren -
of_iomap(), which is called from omap_init_irq_of(),
already takes care of making sure we have a valid
resource to deal with. Because of that, we can
safely remove our explicit call to of_address_to_resource().Acked-by: Jason Cooper
Signed-off-by: Felipe Balbi
Signed-off-by: Tony Lindgren -
no functional changes, just making sure comment
follows Coding Style.Acked-by: Jason Cooper
Signed-off-by: Felipe Balbi
Signed-off-by: Tony Lindgren -
We already hold the number of Pending registers
in omap_nr_pending. Let's use that instead.Acked-by: Jason Cooper
Signed-off-by: Felipe Balbi
Signed-off-by: Tony Lindgren -
Just move the code over as it has no dependencies
on arch/arm/ anymore.Signed-off-by: Felipe Balbi
Signed-off-by: Tony Lindgren -
OMAP INTC irqchip driver will be moved under
drivers/irqchip/ soon but we still have a dependency
with mach-omap2 when it comes to idle functions.In order to make it easy to share those function
prototypes with OMAP PM code, we introduce this new
header.To avoid modifying several board-files and some of
the PM-related code, we just include the new header
from common.h which was already included by all
users of IRQ-related PM code.Signed-off-by: Felipe Balbi
Signed-off-by: Tony Lindgren -
By moving i2c devices to DT we can clean up
i2c_board_info and fix a problem with moving
INTC to irq domain where IRQs can be renumbered
on each boot.Cc: Aaro Koskinen
Signed-off-by: Felipe Balbi
Signed-off-by: Tony Lindgren
15 Sep, 2014
2 commits
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Now that we don't depend on anyting in the mach-at91 directory, we can just
move the driver to where it belongs.Signed-off-by: Maxime Ripard
Acked-by: Boris BREZILLON
Acked-by: Alexandre Belloni
Acked-by: Daniel Lezcano
Signed-off-by: Nicolas FerreConflicts:
arch/arm/mach-at91/Kconfig
arch/arm/mach-at91/Makefile -
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
Signed-off-by: Nicolas Ferre
12 Sep, 2014
11 commits
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now that we don't need to support legacy board-files,
we can completely switch over to a linear irq domain
and make use of irq_alloc_domain_generic_chips() to
allocate all generic irq chips for us.Signed-off-by: Felipe Balbi
Signed-off-by: Tony Lindgren -
we don't need the ifdef if we have omap_nr_pending
telling us how many pending registers we have
on current platform. This solves a possible
problem where we could try to handle bogus
interrupts on OMAP2 and OMAP3 if using single
zImage kernel, because we would end up reading
the following pending FIQ register.Signed-off-by: Felipe Balbi
Signed-off-by: Tony Lindgren -
that variable will tell us how many INTC_PENDING_IRQn
registers we have. It'll be used on a following patch
to cleanup omap_intc_handle_irq() a bit.Signed-off-by: Felipe Balbi
Signed-off-by: Tony Lindgren -
we can set our global omap_nr_irqs early on
and drop the extra argument to omap_init_irq().Signed-off-by: Felipe Balbi
Signed-off-by: Tony Lindgren -
There's no need for that header to be included.
Signed-off-by: Felipe Balbi
Signed-off-by: Tony Lindgren -
that was just a no-op wrapper around omap_intc_handle_irq
anyway.Signed-off-by: Felipe Balbi
Signed-off-by: Tony Lindgren -
now that we're calling set_handle_irq() from
init_irq(), we can safely drop all callers to
omap3_intc_handle_irq() and its definition.Signed-off-by: Felipe Balbi
Signed-off-by: Tony Lindgren -
the idea is that board-files won't need to set
.handle_irq on their machine_descs, which lets
us drop a little more pointless code.Signed-off-by: Felipe Balbi
Signed-off-by: Tony Lindgren -
We want .init_irq to call set_irq_handle() for
legacy platforms. Note that this code will also
be dropped once omap2/3 devices are completely
moved to DT.Signed-off-by: Felipe Balbi
Signed-off-by: Tony Lindgren -
we are now infering number of IRQ lines based
on correct compatible flag, which renders this
binding completely useless.Signed-off-by: Felipe Balbi
Signed-off-by: Tony Lindgren -
we don't need that anymore since specific
devices are passing correct compatible flags.Signed-off-by: Felipe Balbi
Signed-off-by: Tony Lindgren