linux-toradex.git/arch/powerpc/sysdev/mpic.c, branch v3.12.45 Linux kernel for Apalis and Colibri modules powerpc/mpic: create mpic subsystem object 2013-07-01T23:38:42+00:00 Dongsheng.wang@freescale.com Dongsheng.wang@freescale.com 2013-04-09T02:22:31+00:00 9e6f31a9dbc58f6a5661f8dc8c919441b8d3ced4 Register a mpic subsystem at /sys/devices/system/ Signed-off-by: Wang Dongsheng <dongsheng.wang@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com> 
Register a mpic subsystem at /sys/devices/system/

Signed-off-by: Wang Dongsheng <dongsheng.wang@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
powerpc/mpic: add irq_set_wake support 2013-07-01T23:38:41+00:00 Dongsheng.wang@freescale.com Dongsheng.wang@freescale.com 2013-04-09T02:22:29+00:00 5ff04b7287d87c1db74f47360365905ed9a97ff7 Add irq_set_wake support. Just add IRQF_NO_SUSPEND to desc->action->flag. So the wake up interrupt will not be disable in suspend_device_irqs. Signed-off-by: Wang Dongsheng <dongsheng.wang@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com> 
Add irq_set_wake support. Just add IRQF_NO_SUSPEND to desc->action->flag.
So the wake up interrupt will not be disable in suspend_device_irqs.

Signed-off-by: Wang Dongsheng <dongsheng.wang@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
powerpc/mpic: Add get_version API both for internal and external use 2013-07-01T23:38:28+00:00 Hongtao Jia hongtao.jia@freescale.com 2013-04-10T02:52:55+00:00 86d379690c3b005418fafc9afdcdfc731a043862 MPIC version is useful information for both mpic_alloc() and mpic_init(). The patch provide an API to get MPIC version for reusing the code. Also, some other IP block may need MPIC version for their own use. The API for external use is also provided. Signed-off-by: Jia Hongtao <hongtao.jia@freescale.com> Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com> 
MPIC version is useful information for both mpic_alloc() and mpic_init().
The patch provide an API to get MPIC version for reusing the code.
Also, some other IP block may need MPIC version for their own use.
The API for external use is also provided.

Signed-off-by: Jia Hongtao <hongtao.jia@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
powerpc/mpic: Fix irq distribution problem when MPIC_SINGLE_DEST_CPU 2013-05-31T22:29:24+00:00 chenhui zhao chenhui.zhao@freescale.com 2013-05-27T21:59:43+00:00 e242114afff0a41550e174cd787cdbafd34625de For the mpic with a flag MPIC_SINGLE_DEST_CPU, only one bit should be set in interrupt destination registers. The code is applicable to 64-bit platforms as well as 32-bit. Signed-off-by: Zhao Chenhui <chenhui.zhao@freescale.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> 
For the mpic with a flag MPIC_SINGLE_DEST_CPU, only one bit should be
set in interrupt destination registers.

The code is applicable to 64-bit platforms as well as 32-bit.

Signed-off-by: Zhao Chenhui <chenhui.zhao@freescale.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
powerpc: Fix irq_set_affinity() return values 2013-05-14T06:00:18+00:00 Alexander Gordeev agordeev@redhat.com 2013-05-13T00:57:49+00:00 dcb615aef988b57deef3d9b4557ff20f681a82b0 Signed-off-by: Alexander Gordeev <agordeev@redhat.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> 
Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
irqdomain: Allow quiet failure mode 2013-05-06T01:37:43+00:00 Benjamin Herrenschmidt benh@kernel.crashing.org 2013-05-06T01:37:43+00:00 5fe0c1f2f0dca3351536284b0180a79f341b7854 Some interrupt controllers refuse to map interrupts marked as "protected" by firwmare. Since we try to map everyting in the device-tree on some platforms, we end up with a lot of nasty WARN's in the boot log for what is a normal situation on those machines. This defines a specific return code (-EPERM) from the host map() callback which cause irqdomain to fail silently. MPIC is updated to return this when hitting a protected source printing only a single line message for diagnostic purposes. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> 
Some interrupt controllers refuse to map interrupts marked as
"protected" by firwmare. Since we try to map everyting in the
device-tree on some platforms, we end up with a lot of nasty
WARN's in the boot log for what is a normal situation on those
machines.

This defines a specific return code (-EPERM) from the host map()
callback which cause irqdomain to fail silently.

MPIC is updated to return this when hitting a protected source
printing only a single line message for diagnostic purposes.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
powerpc/mpic: allow coreint to be determined by MPIC version 2013-02-15T20:13:22+00:00 Scott Wood scottwood@freescale.com 2013-01-22T01:56:41+00:00 7c509ee01496a170fe4329f076c334591b6f49d0 This will be used by the qemu-e500 platform, as the MPIC version (and thus whether we have coreint) depends on how QEMU is configured. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> 
This will be used by the qemu-e500 platform, as the MPIC version (and
thus whether we have coreint) depends on how QEMU is configured.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
powerpc/mpic: Make distribute_irqs obey MPIC_SINGLE_DEST_CPU 2013-01-29T00:35:04+00:00 Scott Wood scottwood@freescale.com 2013-01-11T13:38:40+00:00 7bd9fc556d8f5752c86fa09cbaa3c1c3ab5da86f Previously we were setting an illegal configuration on mpc85xx MPICs if CONFIG_IRQ_ALL_CPUS is enabled (which for some reason it is in mpc85xx_smp_defconfig). Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> 
Previously we were setting an illegal configuration on mpc85xx
MPICs if CONFIG_IRQ_ALL_CPUS is enabled (which for some reason it is
in mpc85xx_smp_defconfig).

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
POWERPC: drivers: remove __dev* attributes. 2013-01-03T23:57:04+00:00 Greg Kroah-Hartman gregkh@linuxfoundation.org 2012-12-21T22:04:10+00:00 cad5cef62a5a0c525d39118d2e94b6e2034d5e05 CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, __devinitdata, __devinitconst, and __devexit from these drivers. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
CONFIG_HOTPLUG is going away as an option.  As a result, the __dev*
markings need to be removed.

This change removes the use of __devinit, __devexit_p, __devinitdata,
__devinitconst, and __devexit from these drivers.

Based on patches originally written by Bill Pemberton, but redone by me
in order to handle some of the coding style issues better, by hand.

Cc: Bill Pemberton <wfp5p@virginia.edu>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
powerpc/mpic: FSL MPIC error interrupt support. 2012-09-12T19:57:10+00:00 Varun Sethi Varun.Sethi@freescale.com 2012-08-08T04:06:09+00:00 0a4081641d722d3dee140505a86330ecf44db0fe All SOC device error interrupts are muxed and delivered to the core as a single MPIC error interrupt. Currently all the device drivers requiring access to device errors have to register for the MPIC error interrupt as a shared interrupt. With this patch we add interrupt demuxing capability in the mpic driver, allowing device drivers to register for their individual error interrupts. This is achieved by handling error interrupts in a cascaded fashion. MPIC error interrupt is handled by the "error_int_handler", which subsequently demuxes it using the EISR and delivers it to the respective drivers. The error interrupt capability is dependent on the MPIC EIMR register, which was introduced in FSL MPIC version 4.1 (P4080 rev2). So, error interrupt demuxing capability is dependent on the MPIC version and can be used for versions >= 4.1. Signed-off-by: Varun Sethi <Varun.Sethi@freescale.com> Signed-off-by: Bogdan Hamciuc <bogdan.hamciuc@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> 
All SOC device error interrupts are muxed and delivered to the core
as a single MPIC error interrupt. Currently all the device drivers
requiring access to device errors have to register for the MPIC error
interrupt as a shared interrupt.

With this patch we add interrupt demuxing capability in the mpic driver,
allowing device drivers to register for their individual error interrupts.
This is achieved by handling error interrupts in a cascaded fashion.

MPIC error interrupt is handled by the "error_int_handler", which
subsequently demuxes it using the EISR and delivers it to the respective
drivers.

The error interrupt capability is dependent on the MPIC EIMR register,
which was introduced in FSL MPIC version 4.1 (P4080 rev2). So, error
interrupt demuxing capability is dependent on the MPIC version and can
be used for versions >= 4.1.

Signed-off-by: Varun Sethi <Varun.Sethi@freescale.com>
Signed-off-by: Bogdan Hamciuc <bogdan.hamciuc@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>