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2020-08-19ARM: exynos: use private samsung_cpu_id copyArnd Bergmann1-3/+3
The only part of plat-samsung that is shared with arch-exynos is the CPU identification code. Having a separate exynos_cpu_id variable makes the two completely independent and is actually a bit less code in total. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20200806182059.2431-14-krzk@kernel.org Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-01-07ARM: samsung: Rename Samsung and Exynos to lowercaseKrzysztof Kozlowski1-1/+1
Fix up inconsistent usage of upper and lowercase letters in "Samsung" and "Exynos" names. "SAMSUNG" and "EXYNOS" are not abbreviations but regular trademarked names. Therefore they should be written with lowercase letters starting with capital letter. The lowercase "Exynos" name is promoted by its manufacturer Samsung Electronics Co., Ltd., in advertisement materials and on website. Although advertisement materials usually use uppercase "SAMSUNG", the lowercase version is used in all legal aspects (e.g. on Wikipedia and in privacy/legal statements on https://www.samsung.com/semiconductor/privacy-global/). Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2019-07-15docs: arm: convert docs to ReST and rename to *.rstMauro Carvalho Chehab1-1/+1
Converts ARM the text files to ReST, preparing them to be an architecture book. The conversion is actually: - add blank lines and identation in order to identify paragraphs; - fix tables markups; - add some lists markups; - mark literal blocks; - adjust title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Reviewed-by Corentin Labbe <clabbe.montjoie@gmail.com> # For sun4i-ss
2019-03-19ARM: exynos: Add CPU state management for Exynos542x under secure firmwareJoonyoung Shim1-0/+1
Add required CPU state management done via secure monitor call for Exynos542x running unsed Secure Firmware. Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> [mszyprow: rewrote code to use defines and sysram base address instead of the magic numbers, added second smc call in pm_resume, rephrased subject and commit message] Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2018-11-12ARM: exynos: Remove legacy setting of external wakeup interruptsKrzysztof Kozlowski1-2/+0
Since Exynos/S5Pv210 pin-controller driver is taking care about setting the external wakeup interrupts mask, the legacy code can be removed. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Cc: Tomasz Figa <tomasz.figa@gmail.com> Cc: Sylwester Nawrocki <snawrocki@kernel.org> Acked-by: Tomasz Figa <tomasz.figa@gmail.com>
2018-08-30ARM: exynos: Fix imprecise abort during Exynos5422 suspend to RAMKrzysztof Kozlowski1-0/+1
Suspend to RAM on Odroid XU3/XU4/HC1 family (Exynos5422) causes imprecise abort: PM: Syncing filesystems ... done. Freezing user space processes ... (elapsed 0.003 seconds) done. OOM killer disabled. Freezing remaining freezable tasks ... (elapsed 0.003 seconds) done. wake enabled for irq 139 Disabling non-boot CPUs ... IRQ51 no longer affine to CPU1 IRQ52 no longer affine to CPU2 IRQ53 no longer affine to CPU3 IRQ54 no longer affine to CPU4 IRQ55 no longer affine to CPU5 IRQ56 no longer affine to CPU6 cpu cpu4: Dropping the link to regulator.40 IRQ57 no longer affine to CPU7 Unhandled fault: external abort on non-linefetch (0x1008) at 0xf081a028 Internal error: : 1008 [#1] PREEMPT SMP ARM with last call trace in exynos_suspend_enter(). The abort is caused by writing to register in secure part of sysram. Boards booted under secure firmware (e.g. Hardkernel Odroid boards) should access non-secure sysram. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2018-05-13ARM: exynos: Remove unused soc_is_exynos{4,5}Pankaj Dubey1-4/+0
As no more user of soc_is_exynos{4,5} we can safely remove them. Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com> Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com> Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2018-05-13ARM: exynos: Remove static mapping of SCU SFRPankaj Dubey1-0/+5
Lets remove static mapping of SCU SFR mainly used in CORTEX-A9 SoC based boards. Instead use mapping from device tree node of SCU. Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com> Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com> [mszyprow: rebased, added fallback to scu_a9_get_base() when no SCU DT node is available, removed compatibility break warning, fixed non-SMP build, keep SCU base mapping to avoid issues with calls from CPUidle] Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2018-05-02ARM: exynos: Remove support for Exynos5440Krzysztof Kozlowski1-8/+0
The Exynos5440 is not actively developed, there are no development boards available and probably there are no real products with it. Remove wide-tree support for Exynos5440. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2018-01-03ARM: EXYNOS: Add SPDX license identifiersKrzysztof Kozlowski1-4/+1
Replace GPL license statements with SPDX license identifiers (GPL-2.0 and GPL-2.0+). Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2017-10-08ARM: EXYNOS: Remove Exynos4212 related dead codeMarek Szyprowski1-10/+1
Support for Exynos4212 SoCs has been removed by commit bca9085e0ae9 ("ARM: dts: exynos: remove Exynos4212 support (dead code)"), so there is no need to keep remaining dead code related to this SoC version. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2016-06-22ARM: SAMSUNG: Fix missing s5p_init_cpu() declarationBen Dooks1-1/+0
The declaration of s5p_init_cpu() in arch/arm/mach-exynos/common.h is not included in the platform file arch/arm/plat-samsung/cpu.c which generates a warning. Fix the following warning by moving the declaration to somewhere both the machine and platform code can get to it, and including the right files as necessary: arch/arm/plat-samsung/cpu.c:47:13: warning: symbol 's5p_init_cpu' was not declared. Should it be static? Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
2016-06-21ARM: EXYNOS: Fixup endian in pm/pmuBen Dooks1-2/+2
Fix the PMU code endian access code to deal with kernels built for big endian operation. Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
2016-02-25ARM: EXYNOS: Cleanup header files inclusionPankaj Dubey1-1/+0
This includes trivial cleanup in exynos files such as - remove unused header files inclusion from exynos.c, s5p-dev-mfc.c, firmware.c, pm.c. - move inclusion of of.h from common.h to pm.c where it is really required Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
2015-12-02ARM: use const and __initconst for smp_operationsMasahiro Yamada1-1/+1
These smp_operations structures are not over-written, so add "const" qualifier and replace __initdata with __initconst. Also, add "static" where it is possible. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Moritz Fischer <moritz.fischer@ettus.com> Acked-by: Stephen Boyd <sboyd@codeaurora.org> # qcom part Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Patrice Chotard <patrice.chotard@st.com> Acked-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Wei Xu <xuwei5@hisilicon.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Acked-by: Shawn Guo <shawnguo@kernel.org> Acked-by: Matthias Brugger <matthias.bgg@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Liviu Dudau <Liviu.Dudau@arm.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2015-07-21ARM: EXYNOS: Remove duplicated define of SLEEP_MAGICKrzysztof Kozlowski1-0/+6
The magic cookie for entering sleep state was defined and used in two different places: firmware.c and suspend.c. Move it to one common place to reduce duplication. Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-06-05ARM: EXYNOS: add coupled cpuidle support for Exynos3250Bartlomiej Zolnierkiewicz1-1/+3
The following patch adds coupled cpuidle support for Exynos3250 to an existing cpuidle-exynos driver. As a result it enables AFTR mode to be used by default on Exynos3250 without the need to hot unplug CPU1 first. The detailed changelog: - use exynos_[get,set]_boot_addr() in cpuidle-exynos.c and then make cpu_boot_reg_base() static - use exynos_core_restart() in exynos_cpu0_enter_aftr() - add missing smp_rmb() to exynos_cpu0_enter_aftr() (to make the code in-sync with the platform SMP code) - add call_firmware_op(cpu_boot, 1) to exynos_cpu0_enter_aftr() - use dsb_sev() instead of IPI wakeup for Exynos3250 in exynos_cpu0_enter_aftr() - add CPU0 vs CPU1 synchronization based on S5P_PMU_SPARE2 register for Exynos3250 to cpuidle-exynos.c - add flush_cache_all() for CPU1/0 before powerdown/AFTR for Exynos3250 to exynos_wfi_finisher()/exynos_do_idle() Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-05-14ARM: EXYNOS: Fix failed second suspend on Exynos4Krzysztof Kozlowski1-0/+2
On Exynos4412 boards (Trats2, Odroid U3) after enabling L2 cache in 56b60b8bce4a ("ARM: 8265/1: dts: exynos4: Add nodes for L2 cache controller") the second suspend to RAM failed. First suspend worked fine but the next one hang just after powering down of secondary CPUs (system consumed energy as it would be running but was not responsive). The issue was caused by enabling delayed reset assertion for CPU0 just after issuing power down of cores. This was introduced for Exynos4 in 13cfa6c4f7fa ("ARM: EXYNOS: Fix CPU idle clock down after CPU off"). The whole behavior is not well documented but after checking with vendor code this should be done like this (on Exynos4): 1. Enable delayed reset assertion when system is running (for all CPUs). 2. Disable delayed reset assertion before suspending the system. This can be done after powering off secondary CPUs. 3. Re-enable the delayed reset assertion when system is resumed. Fixes: 13cfa6c4f7fa ("ARM: EXYNOS: Fix CPU idle clock down after CPU off") Cc: <stable@vger.kernel.org> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Tested-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Tested-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-03-26ARM: EXYNOS: add code for setting/clearing boot flagBartlomiej Zolnierkiewicz1-0/+6
This code is needed for cpuidle (W-)AFTR mode support on Exynos3250. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Tested-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-01-30cpuidle: exynos: add coupled cpuidle support for exynos4210Bartlomiej Zolnierkiewicz1-0/+4
The following patch adds coupled cpuidle support for Exynos4210 to an existing cpuidle-exynos driver. As a result it enables AFTR mode to be used by default on Exynos4210 without the need to hot unplug CPU1 first. The patch is heavily based on earlier cpuidle-exynos4210 driver from Daniel Lezcano: http://www.spinics.net/lists/linux-samsung-soc/msg28134.html Changes from Daniel's code include: - porting code to current kernels - fixing it to work on my setup (by using S5P_INFORM register instead of S5P_VA_SYSRAM one on Revison 1.1 and retrying poking CPU1 out of the BOOT ROM if necessary) - fixing rare lockup caused by waiting for CPU1 to get stuck in the BOOT ROM (CPU hotplug code in arch/arm/mach-exynos/platsmp.c doesn't require this and works fine) - moving Exynos specific code to arch/arm/mach-exynos/pm.c - using cpu_boot_reg_base() helper instead of BOOT_VECTOR macro - using exynos_cpu_*() helpers instead of accessing registers directly - using arch_send_wakeup_ipi_mask() instead of dsb_sev() (this matches CPU hotplug code in arch/arm/mach-exynos/platsmp.c) - integrating separate exynos4210-cpuidle driver into existing exynos-cpuidle one Cc: Colin Cross <ccross@google.com> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: Tomasz Figa <tomasz.figa@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2014-11-22ARM: EXYNOS: move restart code into pmu driverPankaj Dubey1-1/+0
Let's register restart handler from PMU driver for restart functionality. So that we can remove restart hooks from machine specific file, and thus moving ahead when PMU moved to driver folder, this functionality can be reused for ARM64 based Exynos SoC's. Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com> Acked-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Vivek Gautam <gautam.vivek@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-11-21ARM: EXYNOS: Move PMU specific definitions from common.hPankaj Dubey1-17/+0
This patch moves PMU specific definitions into a new file as exynos-pmu.h. This will help in reducing dependency of common.h in pmu.c. Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-11-21Merge branch 'v3.19-next/cleanup-samsung' into v3.19-next/mach-exynosKukjin Kim1-2/+0
2014-10-20ARM: EXYNOS: Fix build with PM_SLEEP=n and ARM_EXYNOS_CPUIDLE=yBartlomiej Zolnierkiewicz1-0/+4
Fix building of exynos_defconfig with CONFIG_PM_SLEEP disabled and CONFIG_ARM_EXYNOS_CPUIDLE enabled by: * adding EXYNOS_CPU_SUSPEND config option * always building sleep.o * building pm.o if EXYNOS_CPU_SUSPEND is enabled * moving suspend specific code from pm.c to suspend.c * enabling pm-common.o build also for EXYNOS_CPU_SUSPEND option [ Please note that there are no changes in the code moved from pm.c to suspend.c except making few functions non-static and cleaning up includes. ] Also while at it update Copyright dates. The build error messages: drivers/built-in.o: In function `exynos_enter_core0_aftr': /home/bzolnier/linux/drivers/cpuidle/cpuidle-exynos.c:36: undefined reference to `cpu_suspend' arch/arm/mach-exynos/built-in.o:(.data+0x74): undefined reference to `exynos_enter_aftr' make: *** [vmlinux] Error 1 This patch has been tested on Exynos4210 based Origen board. Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-10-20ARM: firmware: add AFTR mode support to firmware do_idle methodBartlomiej Zolnierkiewicz1-0/+5
On some platforms (i.e. EXYNOS ones) more than one idle mode is available and we need to distinguish them in firmware do_idle method. Add mode parameter to do_idle firmware method and AFTR mode support to EXYNOS do_idle implementation. This change is a preparation for adding secure firmware support to EXYNOS cpuidle driver. This patch shouldn't cause any functionality changes. Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-10-20ARM: EXYNOS: Add support for firmware-assisted suspend/resumeTomasz Figa1-0/+4
On a numer of Exynos-based boards Linux kernel is running in non-secure mode under a secure firmware. This means that certain operations need to be handled in special way, with firmware assistance. System-wide suspend/resume is an example of such operations. This patch adds support for firmware-assisted suspend/resume by leveraging recently introduced suspend and resume firmware operations and modifying existing suspend/resume paths to account for presence of secure firmware. Signed-off-by: Tomasz Figa <t.figa@samsung.com> [kgene.kim@samsung.com: rebased] Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-10-20ARM: EXYNOS: Move code from hotplug.c to platsmp.cKrzysztof Kozlowski1-2/+0
Cleanup a little the SMP/hotplug code for Exynos by: 1. Moving completely all functions from hotplug.c into the platsmp.c; 2. Deleting the hotplug.c file. After recent cleanups (e.g. 75ad2ab28f0f "ARM: EXYNOS: use v7_exit_coherency_flush macro for cache disabling") there was only CPU power down related code in hotplug.c file. Rationale behind the code movement and benefits: 1. The file platsmp.c is the only user of code located in hotplug.c. Keeping code in hotplug.c required declaring exynos_cpu_die() in common.h. Such dependencies and mentioned exynos_cpu_die() declaration can be removed. 2. In next patches exynos_set_delayed_reset_assertion() will be introduced. This function will be called by: - cpu_leave_power (hotplug.c), - platform_do_lowpower (hotplug.c), - exynos_boot_secondary (platsmp.c). Merging hotplug.c into platsmp.c leads to simpler and cleaner code with less dependencies between files. The commit only moves code around with one additional observable change: the hotplug.c was compiled with custom CFLAGS (-march=armv7-a). These CFLAGS are not necessary any more. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-07-23ARM: EXYNOS: Refactored code for using PMU address via DTPankaj Dubey1-2/+12
Under "arm/mach-exynos" many files are using PMU register offsets. Since we have added support for accessing PMU base address via DT, now we can remove PMU mapping from exynosX_iodesc. Let's convert all these access using iomapped address. This will help us in removing static mapping of PMU base address as well as help in reducing dependency over machine header files. Thus helping for migration of PMU implementation from machine to driver folder which can be reused for ARM64 based SoC. Also as we have removed static mappings from "regs-pmu.h" it does not need map.h anymore. But "platsmp.c" needed this and till now it got included indirectly. So lets move header inclusion of "mach/map.h" from "regs-pmu.h" to "platsmp.c". Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-07-15ARM: EXYNOS: Add support for mapping PMU base address via DTPankaj Dubey1-0/+1
Add support for mapping Samsung Power Management Unit (PMU) base address from device tree. Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-07-15ARM: EXYNOS: Make exynos machine_ops as staticPankaj Dubey1-8/+0
As machine function ops are used only in this file let's make them static. Also remove unused and unwanted declarations from common.h. Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-07-15ARM: EXYNOS: Remove unused code in common.hSachin Kamat1-4/+0
PINCTRL_EXYNOS is always selected by Exynos platform in its machine Kconfig. Thus the code in the else part is never used. Remove it. Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-06-17ARM: exynos: move sysram info to exynos.cOlof Johansson1-0/+1
This solves a problem with building with CONFIG_SMP=n due to missing sysram_base_addr (or sysram_ns_base_addr) variables. The new setup method is more awkward than I'd like for it to be, but it can't be done in init_early() since ioremap is not yet available, but it needs to happen before SMP. Reported-by: Russell King <linux@arm.linux.org.uk> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Olof Johansson <olof@lixom.net> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2014-06-06Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm into nextLinus Torvalds1-1/+0
Pull ARM updates from Russell King: - Major clean-up of the L2 cache support code. The existing mess was becoming rather unmaintainable through all the additions that others have done over time. This turns it into a much nicer structure, and implements a few performance improvements as well. - Clean up some of the CP15 control register tweaks for alignment support, moving some code and data into alignment.c - DMA properties for ARM, from Santosh and reviewed by DT people. This adds DT properties to specify bus translations we can't discover automatically, and to indicate whether devices are coherent. - Hibernation support for ARM - Make ftrace work with read-only text in modules - add suspend support for PJ4B CPUs - rework interrupt masking for undefined instruction handling, which allows us to enable interrupts earlier in the handling of these exceptions. - support for big endian page tables - fix stacktrace support to exclude stacktrace functions from the trace, and add save_stack_trace_regs() implementation so that kprobes can record stack traces. - Add support for the Cortex-A17 CPU. - Remove last vestiges of ARM710 support. - Removal of ARM "meminfo" structure, finally converting us solely to memblock to handle the early memory initialisation. * 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (142 commits) ARM: ensure C page table setup code follows assembly code (part II) ARM: ensure C page table setup code follows assembly code ARM: consolidate last remaining open-coded alignment trap enable ARM: remove global cr_no_alignment ARM: remove CPU_CP15 conditional from alignment.c ARM: remove unused adjust_cr() function ARM: move "noalign" command line option to alignment.c ARM: provide common method to clear bits in CPU control register ARM: 8025/1: Get rid of meminfo ARM: 8060/1: mm: allow sub-architectures to override PCI I/O memory type ARM: 8066/1: correction for ARM patch 8031/2 ARM: 8049/1: ftrace/add save_stack_trace_regs() implementation ARM: 8065/1: remove last use of CONFIG_CPU_ARM710 ARM: 8062/1: Modify ldrt fixup handler to re-execute the userspace instruction ARM: 8047/1: rwsem: use asm-generic rwsem implementation ARM: l2c: trial at enabling some Cortex-A9 optimisations ARM: l2c: add warnings for stuff modifying aux_ctrl register values ARM: l2c: print a warning with L2C-310 caches if the cache size is modified ARM: l2c: remove old .set_debug method ARM: l2c: kill L2X0_AUX_CTRL_MASK before anyone else makes use of this ...
2014-05-31Merge tag 'samsung-drivers-2' of ↵Olof Johansson1-0/+99
git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/drivers Merge "Samsung 2nd drivers for 3.16" from Kukjin Kim: This is including fix exynos cpufreq driver compilation with ARCH_MULTIPLATFORM. Even though this is a work around, this is required for support exynos multiplatform for a while and will be updated in near future. This is based on tags/samsung-exynos. * tag 'samsung-drivers-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: (24 commits) cpufreq: exynos: Fix driver compilation with ARCH_MULTIPLATFORM ARM: EXYNOS: Enable multi-platform build support ARM: EXYNOS: Consolidate Kconfig entries ARM: EXYNOS: Add support for EXYNOS5410 SoC ARM: EXYNOS: Support secondary CPU boot of Exynos3250 ARM: EXYNOS: Add Exynos3250 SoC ID ARM: EXYNOS: Add 5800 SoC support ARM: EXYNOS: initial board support for exynos5260 SoC clk: exynos5250: Add missing sysmmu clocks for DISP and ISP blocks cpufreq: exynos: Fix the compile error ARM: S3C24XX: move debug-macro.S into the common space ARM: S3C24XX: use generic DEBUG_UART_PHY/_VIRT in debug macro ARM: S3C24XX: trim down debug uart handling ARM: compressed/head.S: remove s3c24xx special case ARM: EXYNOS: Remove unnecessary inclusion of cpu.h ARM: EXYNOS: Migrate Exynos specific macros from plat to mach ARM: EXYNOS: Remove exynos_subsys registration ARM: EXYNOS: Remove duplicate lines in Makefile ARM: EXYNOS: use v7_exit_coherency_flush macro for cache disabling ARM: dts: Remove g2d_pd node for exynos5420 ... Signed-off-by: Olof Johansson <olof@lixom.net>
2014-05-30ARM: EXYNOS: Add support for EXYNOS5410 SoCTarek Dakhran1-2/+10
EXYNOS5410 is SoC in Samsung's Exynos5 SoC series. Add initial support for this SoC. Signed-off-by: Tarek Dakhran <t.dakhran@samsung.com> Signed-off-by: Vyacheslav Tyrtov <v.tyrtov@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-30ARM: EXYNOS: Add Exynos3250 SoC IDChanwoo Choi1-0/+10
This patch add Exynos3250's SoC ID. Exynos 3250 is SoC that is based on the 32-bit RISC processor for Smartphone. Exynos3250 uses Cortex-A7 dual cores and has a target speed of 1.0GHz. Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-30ARM: EXYNOS: Add 5800 SoC supportArun Kumar K1-1/+10
Exynos5800 is an octa core SoC which is based on the 5420 platform. This patch adds the basic support for it in the mach-exynos. Signed-off-by: Arun Kumar K <arun.kk@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-30ARM: l2c: exynos: convert to common l2c310 early resume functionalityRussell King1-1/+0
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-05-26ARM: EXYNOS: Fix kernel panic when unplugging CPU1 on exynosDaniel Lezcano1-0/+1
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>
2014-05-26ARM: EXYNOS: Move the AFTR state function into pm.cDaniel Lezcano1-0/+1
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>
2014-05-25ARM: EXYNOS: Migrate Exynos specific macros from plat to machSachin Kamat1-0/+72
Move Exynos specific macros to mach-exynos from plat-samsung to avoid unnecessary dependency on plat based header files. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-05-15ARM: EXYNOS: Add generic cluster power control functionsAbhilash Kesavan1-0/+3
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>
2014-05-15ARM: EXYNOS: Add generic cpu power control functions for exynos SoCsLeela Krishna Amudala1-0/+3
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>
2014-05-14ARM: EXYNOS: Map SYSRAM through generic DT bindingsSachin Kamat1-0/+1
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>
2014-03-29Merge tag 'exynos-cleanup' of ↵Arnd Bergmann1-2/+1
git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/cleanup3 Merge "Exynos cleanup for v3.15" from Kukjin Kim: - reorganize code for - add support reserve memory for mfc-v7 - consolidate exynos4 and exynos5 machine codes - add generic compatible strings for exynos4 and exynos5 - update DT with generic compatible strings - move clk related dt-binding header file in dt-bindings/clock * tag 'exynos-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: dt-bindings: clock: Move exynos-audss-clk.h to dt-bindings/clock ARM: dts: Update Exynos DT files with generic compatible strings ARM: EXYNOS: Add generic compatible strings ARM: EXYNOS: Consolidate exynos4 and exynos5 machine files ARM: EXYNOS: Consolidate CPU init code ARM: SAMSUNG: Introduce generic Exynos4 and 5 helpers ARM: EXYNOS: Add support to reserve memory for MFC-v7 ARM: SAMSUNG: Reorganize calls to reserve memory for MFC Conflicts: arch/arm/mach-exynos/exynos.c Signed-off-by; Arnd Bergmann <arnd@arndb.de>
2014-03-20ARM: EXYNOS: Stop using legacy Samsung PM codeTomasz Figa1-0/+8
Since Exynos SoCs does not follow most of the semantics of older SoCs when configuring the system to enter sleep, there is no reason to rely on the legacy Samsung PM core anymore. This patch adds local Exynos suspend ops and removes all the code left unnecessary. As a side effect, suspend support on Exynos becomes multiplatform-friendly. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-03-20ARM: EXYNOS: Remove PM initcalls and useless indirectionTomasz Figa1-0/+6
This patch simplifies Exynos PM initialization and makes it multiplatform friendly by replacing initcalls used originally to invoke all the initialization code with explicit function calls. In addition, an useless subsys_interface is removed, as all its .add_dev callback did was setting two function pointers. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-03-20ARM: EXYNOS: Consolidate exynos4 and exynos5 machine filesSachin Kamat1-2/+1
Since there is very little difference between these two files, they can be easily combined into one with necessary SoC checks. While at it also merge the common.c file into this as it does not have any other users. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2014-01-25Merge tag 'pm+acpi-3.14-rc1' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPI and power management updates from Rafael Wysocki: "As far as the number of commits goes, the top spot belongs to ACPI this time with cpufreq in the second position and a handful of PM core, PNP and cpuidle updates. They are fixes and cleanups mostly, as usual, with a couple of new features in the mix. The most visible change is probably that we will create struct acpi_device objects (visible in sysfs) for all devices represented in the ACPI tables regardless of their status and there will be a new sysfs attribute under those objects allowing user space to check that status via _STA. Consequently, ACPI device eject or generally hot-removal will not delete those objects, unless the table containing the corresponding namespace nodes is unloaded, which is extremely rare. Also ACPI container hotplug will be handled quite a bit differently and cpufreq will support CPU boost ("turbo") generically and not only in the acpi-cpufreq driver. Specifics: - ACPI core changes to make it create a struct acpi_device object for every device represented in the ACPI tables during all namespace scans regardless of the current status of that device. In accordance with this, ACPI hotplug operations will not delete those objects, unless the underlying ACPI tables go away. - On top of the above, new sysfs attribute for ACPI device objects allowing user space to check device status by triggering the execution of _STA for its ACPI object. From Srinivas Pandruvada. - ACPI core hotplug changes reducing code duplication, integrating the PCI root hotplug with the core and reworking container hotplug. - ACPI core simplifications making it use ACPI_COMPANION() in the code "glueing" ACPI device objects to "physical" devices. - ACPICA update to upstream version 20131218. This adds support for the DBG2 and PCCT tables to ACPICA, fixes some bugs and improves debug facilities. From Bob Moore, Lv Zheng and Betty Dall. - Init code change to carry out the early ACPI initialization earlier. That should allow us to use ACPI during the timekeeping initialization and possibly to simplify the EFI initialization too. From Chun-Yi Lee. - Clenups of the inclusions of ACPI headers in many places all over from Lv Zheng and Rashika Kheria (work in progress). - New helper for ACPI _DSM execution and rework of the code in drivers that uses _DSM to execute it via the new helper. From Jiang Liu. - New Win8 OSI blacklist entries from Takashi Iwai. - Assorted ACPI fixes and cleanups from Al Stone, Emil Goode, Hanjun Guo, Lan Tianyu, Masanari Iida, Oliver Neukum, Prarit Bhargava, Rashika Kheria, Tang Chen, Zhang Rui. - intel_pstate driver updates, including proper Baytrail support, from Dirk Brandewie and intel_pstate documentation from Ramkumar Ramachandra. - Generic CPU boost ("turbo") support for cpufreq from Lukasz Majewski. - powernow-k6 cpufreq driver fixes from Mikulas Patocka. - cpufreq core fixes and cleanups from Viresh Kumar, Jane Li, Mark Brown. - Assorted cpufreq drivers fixes and cleanups from Anson Huang, John Tobias, Paul Bolle, Paul Walmsley, Sachin Kamat, Shawn Guo, Viresh Kumar. - cpuidle cleanups from Bartlomiej Zolnierkiewicz. - Support for hibernation APM events from Bin Shi. - Hibernation fix to avoid bringing up nonboot CPUs with ACPI EC disabled during thaw transitions from Bjørn Mork. - PM core fixes and cleanups from Ben Dooks, Leonardo Potenza, Ulf Hansson. - PNP subsystem fixes and cleanups from Dmitry Torokhov, Levente Kurusa, Rashika Kheria. - New tool for profiling system suspend from Todd E Brandt and a cpupower tool cleanup from One Thousand Gnomes" * tag 'pm+acpi-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (153 commits) thermal: exynos: boost: Automatic enable/disable of BOOST feature (at Exynos4412) cpufreq: exynos4x12: Change L0 driver data to CPUFREQ_BOOST_FREQ Documentation: cpufreq / boost: Update BOOST documentation cpufreq: exynos: Extend Exynos cpufreq driver to support boost cpufreq / boost: Kconfig: Support for software-managed BOOST acpi-cpufreq: Adjust the code to use the common boost attribute cpufreq: Add boost frequency support in core intel_pstate: Add trace point to report internal state. cpufreq: introduce cpufreq_generic_get() routine ARM: SA1100: Create dummy clk_get_rate() to avoid build failures cpufreq: stats: create sysfs entries when cpufreq_stats is a module cpufreq: stats: free table and remove sysfs entry in a single routine cpufreq: stats: remove hotplug notifiers cpufreq: stats: handle cpufreq_unregister_driver() and suspend/resume properly cpufreq: speedstep: remove unused speedstep_get_state platform: introduce OF style 'modalias' support for platform bus PM / tools: new tool for suspend/resume performance optimization ACPI: fix module autoloading for ACPI enumerated devices ACPI: add module autoloading support for ACPI enumerated devices ACPI: fix create_modalias() return value handling ...
2014-01-06cpufreq: exynos: Convert exynos-cpufreq to platform driverLukasz Majewski1-0/+1
To make the driver multiplatform-friendly, unconditional initialization in an initcall is replaced with a platform driver probed only if respective platform device is registered. Tested at: Exynos4210 (TRATS) and Exynos4412 (TRATS2) Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Sachin Kamat <sachin.kamat@linaro.org> Tested-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-21 09:38:20 +0300