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http://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/drivers
Merge "Samsung exynos-cpuidle updates for v3.16" from Kukjin Kim:
- From Daniel Lezcano:
This patchset relies on the cpm_pm notifier to initiate the
powerdown sequence operations from pm.c instead cpuidle.c.
Thus the cpuidle driver is no longer dependent from arch
specific code as everything is called from the pm.c file.
* tag 'exynos-cpuidle' of http://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: (94 commits)
ARM: EXYNOS: Fix kernel panic when unplugging CPU1 on exynos
ARM: EXYNOS: Move the driver to drivers/cpuidle directory
ARM: EXYNOS: Cleanup all unneeded headers from cpuidle.c
ARM: EXYNOS: Pass the AFTR callback to the platform_data
ARM: EXYNOS: Move S5P_CHECK_SLEEP into pm.c
ARM: EXYNOS: Move the power sequence call in the cpu_pm notifier
ARM: EXYNOS: Move the AFTR state function into pm.c
ARM: EXYNOS: Encapsulate the AFTR code into a function
ARM: EXYNOS: Disable cpuidle for exynos5440
ARM: EXYNOS: Encapsulate boot vector code into a function for cpuidle
ARM: EXYNOS: Pass wakeup mask parameter to function for cpuidle
ARM: EXYNOS: Remove ifdef for scu_enable in pm
ARM: EXYNOS: Move scu_enable in the cpu_pm notifier
ARM: EXYNOS: Use the cpu_pm notifier for pm
ARM: EXYNOS: Fix S5P_WAKEUP_STAT call for cpuidle
ARM: EXYNOS: Move some code inside the idle_finisher for cpuidle
ARM: EXYNOS: Encapsulate register access inside a function for pm
ARM: EXYNOS: Change function name prefix for cpuidle
ARM: EXYNOS: Use cpuidle_register
ARM: EXYNOS: Prevent forward declaration for cpuidle
...
Signed-off-by: Olof Johansson <olof@lixom.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/drivers
Merge "DaVinci EDMA clean-up for v3.16" from Sekhar Nori:
This series makes edma use configuration information available within
the IP instead of reading it from platform data or DT. Some other useful
clean-ups are included too.
* tag 'davinci-for-v3.16/edma' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci: (34 commits)
ARM: edma: Remove redundant/unused parameters from edma_soc_info
ARM: davinci: Remove redundant/unused parameters for edma
ARM: dts: am4372: Remove obsolete properties from edma node
ARM: dts: am33xx: Remove obsolete properties from edma node
dt/bindings: ti,edma: Remove redundant properties from documentation
ARM: edma: Get IP configuration from HW (number of channels, tc, etc)
ARM: edma: Save number of regions from pdata to struct edma
ARM: edma: Remove num_cc member from struct edma
ARM: edma: Remove queue_tc_mapping data from edma_soc_info
ARM: davinci: Remove eDMA3 queue_tc_mapping data from edma_soc_info
ARM: edma: Do not change TC -> Queue mapping, leave it to default.
ARM: edma: Take the number of tc from edma_soc_info (pdata)
ARM: edma: No need to clean the pdata in edma_of_parse_dt()
ARM: edma: Clean up and simplify the code around irq request
dmaengine: edma: update DMA memcpy to use new param element
dmaengine: edma: Document variables used for residue accounting
dmaengine: edma: Provide granular accounting
dmaengine: edma: Make reading the position of active channels work
dmaengine: edma: Store transfer data in edma_desc and edma_pset
dmaengine: edma: Create private pset struct
...
Signed-off-by: Olof Johansson <olof@lixom.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/drivers
The patch fixes EDMA crossbar mapping to actually
make it work. The patch has been tagged for stable.
* tag 'davinci-fixes-for-v3.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
ARM: common: edma: Fix xbar mapping
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A look at the code reveals use of S5P_VA_SYSRAM macro, in case of certain SoC
revisions, which is not valid any longer, after SYSRAM started to be mapped
dynamically. The new dynamic mapping is stored in sysram_base_addr variable,
which is declared static in platsmp.c
This fix makes sysram_base_addr non-static, declared it in common.h and used
in pm.c instead of S5P_VA_SYSRAM.
Suggested-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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No more dependency on the arch code. The platform_data field is used to set the
PM callback as the other cpuidle drivers.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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This macro is only used there.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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The code to initiate and exit the powerdown sequence is the same in
pm.c and cpuidle.c.
Let's split the common part in the pm.c and reuse it from the cpu_pm notifier.
That is one more step forward to make the cpuidle driver arch indenpendant.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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In order to remove depedency on pm code, let's move the 'exynos_enter_aftr'
function into the pm.c file as well as the other helper functions.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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Let's encapsulate the AFTR state specific call into a single function.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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There is no point to register the cpuidle driver for the 5440 as it has only
one WFI state which is the default idle function when the cpuidle driver is
disabled.
By disabling cpuidle we prevent to enter to the governor computation for
nothing, thus saving a lot of processing time.
The only drawback is the statistic via sysfs on this state which is lost but
it is meaningless and it could be retrieved from the ftrace easily.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Acked-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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Pass the wakeup mask to 'exynos_set_wakeupmask' as this function could
be used for different idle states with different mask.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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The scu_enable function is already a noop in the scu's header file is
CONFIG_SMP=n, so no need to use these macros in the code.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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We make the cpuidle code less arch dependent.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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Use the cpu_pm_enter/exit notifier to group some pm code inside the
pm file.
The save and restore code is duplicated across pm.c and cpuidle.c. By
using the cpu_pm notifier, we can factor out the routine.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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This function should be called only when the powerdown sequence fails.
Even if the current code does not hurt, by moving this line, we have
the same code than the one in pm.c.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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Move the code around to differentiate different section of code and
prepare it to be factored out in the next patches.
The call order changed but hat doesn't have a side effect because
they are independent. The important call is cpu_do_idle() which must
be done the last.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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That makes the code cleaner and encapsulted. The function will be
reused in the next patch.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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The driver was initially written for exynos4 but the driver is used
also for exynos5.
Change the function prefix name exynos4 -> exynos
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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Use the cpuidle generic function 'cpuidle_register'. That saves us
from some extra lines of code and unneeded variables.
A side effect of this change is a bug fix where before the cpuidle
driver was registered for each_online_cpu and now it is for
each_possible_cpu.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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Move the structure below the 'exynos4_enter_lowpower' function so no
more need of forward declaration.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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Now with common clock support added for exynos5250 it is necessary to
move this code to exynos5250 common clock driver as clock registers
should be handled there. This change is tested in exynos5250 based
arndale platform.
Cc: Abhilash Kesavan <a.kesavan@samsung.com>
Cc: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Kukjin Kim <kgene.kim@samsugn.com>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
[t.figa: Rebased onto current kernel sources.]
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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The following parameters are no longer needed by the edma driver since the
information can be obtained from the IP's CCCFG register:
n_channel, n_region, n_slot and n_tc.
Remove the initialization of n_cc as well since in this context it has no
meaning. We have separate edma_soc_info struct/eDMA3_CC instance so this
member does not make any sense (and the driver no longer uses it).
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
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dma-channels, ti,edma-regions and ti,edma-slots no longer needed in DT since
the the same information is available in the IP's CCCFG register.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
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dma-channels, ti,edma-regions and ti,edma-slots no longer needed in DT since
the the same information is available in the IP's CCCFG register.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
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From CCCFG register of eDMA3 we can get all the needed information for the
driver about the IP:
Number of channels: NUM_DMACH
Number of regions: NUM_REGN
Number of slots (PaRAM sets): NUM_PAENTRY
Number of TC/EQ: NUM_EVQUE
In case when booted with DT or the queue_priority_mapping is not provided
set up a default priority map.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Joel Fernandes <joelf@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
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To be consistent in the code that we take parameters from edma_cc[j] struct
and not randomly from info[j] as well.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
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The struct edma is allocated per CC bases so the member num_cc does not make
any sense. One CC is one CC, it does not have sub CCs.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
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It is ignored by the edma driver since we are just setting back the default
mapping of TC -> Queue.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
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There is no need to change the default TC -> Queue mapping. By default the
mapping is: TC0 -> Q0, TC1 -> Q1, etc.
Changing this has no benefits at all and all the board files are just setting
the same mapping back to the HW.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
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Instead of saving the for loop length, take the num_tc value from the pdata.
In case of DT boot set the n_tc to 3 as it is hardwired in edma_of_parse_dt()
This is a temporary state since upcoming patch(es) will change how we are
dealing with these parameters.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
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The pdata has been just allocated with devm_kzalloc() in
edma_setup_info_from_dt() and passed to this function.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
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Get the two interrupt line number at the same time by merging the two
instance of if(node){}else{} places.
replace the &pdev->dev with the already existing dev which makes it possible
to collapse lines with devm_request_irq()
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
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next/drivers
Merge "ARM: mvebu: driver changes for v3.16" from Jason Cooper:
mvebu driver changes for v3.16
- mvebu-devbus
- changes need to add support for the orion5x platform
* tag 'mvebu-drivers-3.16' of git://git.infradead.org/linux-mvebu:
memory: mvebu-devbus: add a devbus, keep-config property
memory: mvebu-devbus: add Orion5x support
memory: mvebu-devbus: split functions
memory: mvebu-devbus: use _SHIFT suffixes instead of _BIT
memory: mvebu-devbus: use ARMADA_ prefix in defines
ARM: orion5x: fix target ID for crypto SRAM window
memory: mvebu-devbus: fix the conversion of the bus width
Signed-off-by: Olof Johansson <olof@lixom.net>
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Add machine-dependent MCPM call-backs for Exynos5420. These are used
to power up/down the secondary CPUs during boot, shutdown, s2r and
switching.
Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
Signed-off-by: Inderpal Singh <inderpal.s@samsung.com>
Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Reviewed-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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Add device-tree bindings for the ARM CCI-400 on Exynos5420. There
are two slave interfaces: one for the A15 cluster and one for the
A7 cluster.
Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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Add generic cluster power control functions for exynos based SoCS
for cluster power up/down and to know the cluster status.
Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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Use generic exynos cpu power control functions to power up/down
and to know the status of the cpu in platsmp and hotplug code.
Signed-off-by: Leela Krishna Amudala <leela.krishna@linaro.org>
Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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Add generic cpu power control functions for exynos based
SoCS for cpu power up/down and to know the cpu status.
Signed-off-by: Leela Krishna Amudala <leela.krishna@linaro.org>
Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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Instead of hardcoding the SYSRAM details for each SoC,
pass this information through device tree (DT) and make
the code SoC agnostic. Generic DT SRAM bindings are
used for achieving this.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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This patch moves S3C24XX specific clock Kconfig options into
"clk/samsung/Kconfig" and also removes COMMON_CLK selection from
"mach-s3c24xx/Kconfig" as S3C24XX_COMMON_CLK is selecting it's dependency.
CC: Ben Dooks <ben-linux@fluff.org>
CC: Kukjin Kim <kgene.kim@samsung.com>
CC: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
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This patch selects COMMON_CLK_SAMSUNG for EXYNOS and S3C64XX SoC
and removes COMMON_CLK selection as COMMON_CLK_SAMSUNG selects it's dependency.
CC: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
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After full migration of s3c24xx to Common Clock Framework, some unneeded
entries in Kconfig still remained. Delete them.
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
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This patch includes,
1] renaming of the HSI2C clocks
2] renaming of spi clocks according to the datasheet
3] fixes for child-parent relationships
4] adding of more clocks related to PERIC block
5] use GATE_IP_* offsets instead of GATE_BUS_*
Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: Shaik Ameer Basha <shaik.ameer@samsung.com>
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
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This finally removes all remaining SAMSUNG_CLOCK conditional code
from s3c24xx architectures.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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With the move to the common clock framework completed for s3c2410, s3c2440
and s3c2442, the legacy clock code for these machines can go away too.
This also includes the legacy dclk code, as all legacy users are converted.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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Convert the machines using the s3c2410 to use the new driver based
on the common clock framework instead of the legacy Samsung clock driver.
As with the s3c244x, machines using the clkout output will need a fixup
from someone with the hardware.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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