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2016-10-14Merge tag 'powerpc-4.9-2' of ↵Linus Torvalds24-8/+7181
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull more powerpc updates from Michael Ellerman: "Some more powerpc updates for 4.9: Freescale updates from Scott Wood: - qbman support (a prerequisite for datapath drivers such as ethernet) - a PCI DMA fix+improvement - reset handler changes - more 8xx optimizations - some cleanups and fixes.' Fixes: - selftests/powerpc: Add missing binaries to .gitignores (Michael Ellerman) - selftests/powerpc: Fix build break caused by EXPORT_SYMBOL changes (Michael Ellerman) - powerpc/pseries: Fix stack corruption in htpe code (Laurent Dufour) - powerpc/64s: Fix power4_fixup_nap placement (Nicholas Piggin) - powerpc/64: Fix incorrect return value from __copy_tofrom_user (Paul Mackerras) - powerpc/mm/hash64: Fix might_have_hea() check (Michael Ellerman) Other: - MAINTAINERS: Remove myself from PA Semi entries (Olof Johansson) - MAINTAINERS: Drop separate pseries entry (Michael Ellerman) - MAINTAINERS: Update powerpc website & add selftests (Michael Ellerman): * tag 'powerpc-4.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (35 commits) powerpc/mm/hash64: Fix might_have_hea() check powerpc/64: Fix incorrect return value from __copy_tofrom_user powerpc/64s: Fix power4_fixup_nap placement powerpc/pseries: Fix stack corruption in htpe code selftests/powerpc: Fix build break caused by EXPORT_SYMBOL changes MAINTAINERS: Update powerpc website & add selftests MAINTAINERS: Drop separate pseries entry MAINTAINERS: Remove myself from PA Semi entries selftests/powerpc: Add missing binaries to .gitignores arch/powerpc: Add CONFIG_FSL_DPAA to corenetXX_smp_defconfig soc/qman: Add self-test for QMan driver soc/bman: Add self-test for BMan driver soc/fsl: Introduce DPAA 1.x QMan device driver soc/fsl: Introduce DPAA 1.x BMan device driver powerpc/8xx: make user addr DTLB miss the short path powerpc/8xx: Move additional DTLBMiss handlers out of exception area powerpc/8xx: use r3 to scratch CR in ITLBmiss soc/fsl/qe: fix gpio save_regs functions powerpc/8xx: add dedicated machine check handler powerpc/8xx: add system_reset_exception ...
2016-10-07Merge tag 'armsoc-drivers' of ↵Linus Torvalds5-175/+223
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC driver updates from Arnd Bergmann: "Driver updates for ARM SoCs, including a couple of newly added drivers: - The Qualcomm external bus interface 2 (EBI2), used in some of their mobile phone chips for connecting flash memory, LCD displays or other peripherals - Secure monitor firmware for Amlogic SoCs, and an NVMEM driver for the EFUSE based on that firmware interface. - Perf support for the AppliedMicro X-Gene performance monitor unit - Reset driver for STMicroelectronics STM32 - Reset driver for SocioNext UniPhier SoCs Aside from these, there are minor updates to SoC-specific bus, clocksource, firmware, pinctrl, reset, rtc and pmic drivers" * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (50 commits) bus: qcom-ebi2: depend on HAS_IOMEM pinctrl: mvebu: orion5x: Generalise mv88f5181l support for 88f5181 clk: mvebu: Add clk support for the orion5x SoC mv88f5181 dt-bindings: EXYNOS: Add Exynos5433 PMU compatible clocksource: exynos_mct: Add the support for ARM64 perf: xgene: Add APM X-Gene SoC Performance Monitoring Unit driver Documentation: Add documentation for APM X-Gene SoC PMU DTS binding MAINTAINERS: Add entry for APM X-Gene SoC PMU driver bus: qcom: add EBI2 driver bus: qcom: add EBI2 device tree bindings rtc: rtc-pm8xxx: Add support for pm8018 rtc nvmem: amlogic: Add Amlogic Meson EFUSE driver firmware: Amlogic: Add secure monitor driver soc: qcom: smd: Reset rx tail rather than tx memory: atmel-sdramc: fix a possible NULL dereference reset: hi6220: allow to compile test driver on other architectures reset: zynq: add driver Kconfig option reset: sunxi: add driver Kconfig option reset: stm32: add driver Kconfig option reset: socfpga: add driver Kconfig option ...
2016-09-25arch/powerpc: Add CONFIG_FSL_DPAA to corenetXX_smp_defconfigClaudiu Manoil2-0/+2
Enable the drivers on the powerpc arch. Signed-off-by: Roy Pledge <roy.pledge@nxp.com> Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com> Signed-off-by: Scott Wood <oss@buserror.net>
2016-09-25soc/qman: Add self-test for QMan driverClaudiu Manoil6-0/+995
Add self tests for the DPAA 1.x Queue Manager driver. The tests ensure that the driver can properly enqueue and dequeue to/from frame queues using the QMan portal infrastructure. Signed-off-by: Roy Pledge <roy.pledge@nxp.com> Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com> Signed-off-by: Scott Wood <oss@buserror.net>
2016-09-25soc/bman: Add self-test for BMan driverClaudiu Manoil5-0/+259
Add a self test for the DPAA 1.x Buffer Manager driver. This test ensures that the driver can properly acquire and release buffers using the BMan portal infrastructure. Signed-off-by: Roy Pledge <roy.pledge@nxp.com> Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com> Signed-off-by: Scott Wood <oss@buserror.net>
2016-09-25soc/fsl: Introduce DPAA 1.x QMan device driverClaudiu Manoil5-2/+4418
This driver enables the Freescale DPAA 1.x Queue Manager block. QMan is a hardware accelerator that manages frame queues. It allows CPUs and other accelerators connected to the SoC datapath to enqueue and dequeue ethernet frames, thus providing the infrastructure for data exchange among CPUs and datapath accelerators. Signed-off-by: Roy Pledge <roy.pledge@nxp.com> Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com> Signed-off-by: Scott Wood <oss@buserror.net>
2016-09-25soc/fsl: Introduce DPAA 1.x BMan device driverClaudiu Manoil7-0/+1492
This driver enables the Freescale DPAA 1.x Buffer Manager block. BMan is a hardware accelerator that manages buffer pools. It allows CPUs and other accelerators connected to the SoC datapath to acquire and release buffers during data processing. Signed-off-by: Roy Pledge <roy.pledge@nxp.com> Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com> Signed-off-by: Scott Wood <oss@buserror.net>
2016-09-25soc/fsl/qe: fix gpio save_regs functionsChristophe Leroy1-1/+2
of_mm_gpiochip_add_data() calls mm_gc->save_regs() before setting the data. Therefore ->save_regs() cannot use gpiochip_get_data() An Oops is encountered without this fix. fixes: 1e714e54b5ca5 ("powerpc: qe_lib-gpio: use gpiochip data pointer") Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Cc: <stable@vger.kernel.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Scott Wood <oss@buserror.net>
2016-09-25soc/fsl/qe: fix Oops on CPM1 (and likely CPM2)Christophe Leroy1-0/+8
Commit 0e6e01ff694ee ("CPM/QE: use genalloc to manage CPM/QE muram") has changed the way muram is managed. genalloc uses kmalloc(), hence requires the SLAB to be up and running. On powerpc 8xx, cpm_reset() is called early during startup. cpm_reset() then calls cpm_muram_init() before SLAB is available, hence the following Oops. cpm_reset() cannot be called during initcalls because the CPM is needed for console. This patch removes the call to cpm_muram_init() from cpm_reset(). cpm_muram_init() will be called from a new function called cpm_init() which is declared as subsys_initcall, unless cpm_muram_alloc() is called earlier for the serial console in which case cpm_muram_init() will be called from there. The reason for calling it from two places is that some drivers (e.g. i2c-cpm) need some of the initialisations done by cpm_muram_init() but don't call cpm_muram_alloc(). The console driver calls cpm_muram_alloc() but some platforms might not use the CPM serial ports for console. [ 0.000000] Unable to handle kernel paging request for data at address 0x00000008 [ 0.000000] Faulting instruction address: 0xc01acce0 [ 0.000000] Oops: Kernel access of bad area, sig: 11 [#1] [ 0.000000] PREEMPT CMPC885 [ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 4.4.14-g0886ed8 #5 [ 0.000000] task: c05183e0 ti: c0536000 task.ti: c0536000 [ 0.000000] NIP: c01acce0 LR: c0011068 CTR: 00000000 [ 0.000000] REGS: c0537e50 TRAP: 0300 Not tainted (4.4.14-s3k-dev-g0886ed8-svn) [ 0.000000] MSR: 00001032 <ME,IR,DR,RI> CR: 28044428 XER: 00000000 [ 0.000000] DAR: 00000008 DSISR: c0000000 GPR00: c0011068 c0537f00 c05183e0 00000000 00009000 ffffffff 00000bc0 ffffffff GPR08: ff003000 ff00b000 ff003bbf 00000000 22044422 100d43a8 00000000 07ff94e8 GPR16: 00000000 07bb5d70 00000000 07ff81f4 07ff81f4 07ff81f4 00000000 00000000 GPR24: 07ffb3a0 07fe7628 c0550000 c7ffa190 c0540000 ff003bbf 00000000 00000001 [ 0.000000] NIP [c01acce0] gen_pool_add_virt+0x14/0xdc [ 0.000000] LR [c0011068] cpm_muram_init+0xd4/0x18c [ 0.000000] Call Trace: [ 0.000000] [c0537f00] [00000200] 0x200 (unreliable) [ 0.000000] [c0537f20] [c0011068] cpm_muram_init+0xd4/0x18c [ 0.000000] [c0537f70] [c0494684] cpm_reset+0xb4/0xc8 [ 0.000000] [c0537f90] [c0494c64] cmpc885_setup_arch+0x10/0x30 [ 0.000000] [c0537fa0] [c0493cd4] setup_arch+0x130/0x168 [ 0.000000] [c0537fb0] [c04906bc] start_kernel+0x88/0x380 [ 0.000000] [c0537ff0] [c0002224] start_here+0x38/0x98 [ 0.000000] Instruction dump: [ 0.000000] 91430010 91430014 80010014 83e1000c 7c0803a6 38210010 4e800020 7c0802a6 [ 0.000000] 9421ffe0 bf61000c 90010024 7c7e1b78 <80630008> 7c9c2378 7cc31c30 3863001f [ 0.000000] ---[ end trace dc8fa200cb88537f ]--- fixes: 0e6e01ff694ee ("CPM/QE: use genalloc to manage CPM/QE muram") Cc: stable@vger.linux.org Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> [scottwood: Removed some string changes unrelated to bugfix] Signed-off-by: Scott Wood <oss@buserror.net>
2016-09-25fsl/qe: use of_property_read_boolJulia Lawall1-1/+1
Use of_property_read_bool to check for the existence of a property. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression e1,e2; statement S2,S1; @@ - if (of_get_property(e1,e2,NULL)) + if (of_property_read_bool(e1,e2)) S1 else S2 // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Scott Wood <oss@buserror.net>
2016-09-24soc/fsl/qe: Use of_adress_to_resource() in get_qe_base()Zhao Qiang1-5/+5
modify get_qe_base function with of_address_to_resource instead of of_get_property and of_translate_address. Signed-off-by: Zhao Qiang <qiang.zhao@nxp.com> Signed-off-by: Scott Wood <oss@buserror.net>
2016-09-24soc/fsl/qe: Use resource_sizeVaishali Thakkar1-1/+1
Use the function resource_size instead of explicit computation. Problem found using Coccinelle. Signed-off-by: Vaishali Thakkar <vaishali.thakkar@oracle.com> Signed-off-by: Scott Wood <oss@buserror.net>
2016-09-19Merge tag 'v4.8-next-soc' of https://github.com/mbgg/linux-mediatek into ↵Arnd Bergmann1-1/+1
next/drivers Pull "ARM: mediatek: soc updates for v4.9" from Matthias Brugger: extent the waiting time of the pmic wrapper to 10 ms which reduces the failure rate on the data transfer between pmic and pmic wrapper. * tag 'v4.8-next-soc' of https://github.com/mbgg/linux-mediatek: soc: mediatek: PMIC wrap: Extend the waiting time to 10ms.
2016-09-15Merge tag 'tegra-for-4.9-soc' of ↵Arnd Bergmann1-20/+8
git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/drivers Pull "soc/tegra: Changes for v4.9-rc1" from Thierry Reding: This contains a single patch to fix an issue with setting the deep power down mode of I/O rails. * tag 'tegra-for-4.9-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux: soc/tegra: pmc: Fix incorrect DPD request
2016-09-15Merge tag 'qcom-drivers-for-4.9' of ↵Arnd Bergmann2-111/+157
git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux into next/drivers Pull "Qualcomm ARM Based Driver Updates for v4.9" from Andy Gross: * Silence smem probe defer messages * Make scm explicitly non-modular * Assorted SMD bug fixes and minor changes * Add PM8018 RTC support * tag 'qcom-drivers-for-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux: rtc: rtc-pm8xxx: Add support for pm8018 rtc soc: qcom: smd: Reset rx tail rather than tx soc: qcom: smd: Represent smd edges as devices soc: qcom: smd: Request irqs after parsing properties soc: qcom: smd: Simplify multi channel handling soc: qcom: smd: Correct compile stub prototypes firmware: qcom_scm: make it explicitly non-modular soc: qcom: smem: Silence probe defer error
2016-09-13ARM: EXYNOS: Remove calls to of_genpd_get_from_provider()Jon Hunter1-15/+8
Update the EXYNOS PM domain code to use the of_genpd_add_subdomain() and remove any calls to of_genpd_get_from_provider(). Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-09-01soc: qcom: smd: Reset rx tail rather than txBjorn Andersson1-1/+1
The local end of each SMD channel is responsible for updating the tx head and the rx tail, as such we should not touch the tx tail during a reset. Reported-by: Jeremy McNicoll <jmcnicol@redhat.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Andy Gross <andy.gross@linaro.org>
2016-08-23soc: qcom: smd: Represent smd edges as devicesBjorn Andersson1-75/+122
By representing each edge as its own device the channels are no longer tied to being parented by the same smd device and as such an edge can live as children of e.g. remoteproc instances. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Andy Gross <andy.gross@linaro.org>
2016-08-23soc: qcom: smd: Request irqs after parsing propertiesBjorn Andersson1-16/+16
The code exectued by the interrupt handler depends on the values parsed after requesting the irq, just to be save we should therefor move the request_irq() call to be done after parsing the properties. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Andy Gross <andy.gross@linaro.org>
2016-08-23soc: qcom: smd: Simplify multi channel handlingBjorn Andersson1-18/+16
Multi-channel clients split between several drivers need a way to close individual channels, as these drivers might be removed individually. With this in place the responsibility of closing additionally opened channels to the client as well only concerning smd about the primary channel. With this approach we will only trigger removal of SMD devices based on the state of the primary channel, however we get in sync with how rpmsg works. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Andy Gross <andy.gross@linaro.org>
2016-08-23soc: qcom: smem: Silence probe defer errorStephen Boyd1-1/+2
If we fail to get the hwspinlock due to probe defer, we shouldn't print an error message. Just be silent in this case. Cc: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Andy Gross <andy.gross@linaro.org>
2016-08-22soc: mediatek: PMIC wrap: Extend the waiting time to 10ms.Henry Chen1-1/+1
Read data fails sometimes because of a timeout that PMIC cannot transfer data to PMIC wrap on time, extend the waiting time to 10ms to reduce the failed rate. Signed-off-by: Henry Chen <henryc.chen@mediatek.com> Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
2016-08-19soc: rockchip: support active_wakeup for rockchip power-domainsElaine Zhang1-43/+57
Register gpd_dev_ops.active_wakeup function to support keep power during suspend state. And add flag to each power domain to decide whether keep power during suspend or not. Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com> Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-08-16soc/tegra: pmc: Fix incorrect DPD requestVince Hsu1-20/+8
Reading the DPD_REQ & DPD2_REQ registers returns the previous requests. If we sets the current request bit with the returned value, then other pads will be turned on or off unexpectedly. Signed-off-by: Vince Hsu <vinceh@nvidia.com> Reviewed-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-08-01Merge tag 'armsoc-drivers' of ↵Linus Torvalds21-82/+731
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC driver updates from Olof Johansson: "Driver updates for ARM SoCs. A slew of changes this release cycle. The reset driver tree, that we merge through arm-soc for historical reasons, is also sizable this time around. Among the changes: - clps711x: Treewide changes to compatible strings, merged here for simplicity. - Qualcomm: SCM firmware driver cleanups, move to platform driver - ux500: Major cleanups, removal of old mach-specific infrastructure. - Atmel external bus memory driver - Move of brcmstb platform to the rest of bcm - PMC driver updates for tegra, various fixes and improvements - Samsung platform driver updates to support 64-bit Exynos platforms - Reset controller cleanups moving to devm_reset_controller_register() APIs - Reset controller driver for Amlogic Meson - Reset controller driver for Hisilicon hi6220 - ARM SCPI power domain support" * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (100 commits) ARM: ux500: consolidate base platform files ARM: ux500: move soc_id driver to drivers/soc ARM: ux500: call ux500_setup_id later ARM: ux500: consolidate soc_device code in id.c ARM: ux500: remove cpu_is_u* helpers ARM: ux500: use CLK_OF_DECLARE() ARM: ux500: move l2x0 init to .init_irq mfd: db8500 stop passing around platform data ASoC: ab8500-codec: remove platform data based probe ARM: ux500: move ab8500_regulator_plat_data into driver ARM: ux500: remove unused regulator data soc: raspberrypi-power: add CONFIG_OF dependency firmware: scpi: add CONFIG_OF dependency video: clps711x-fb: Changing the compatibility string to match with the smallest supported chip input: clps711x-keypad: Changing the compatibility string to match with the smallest supported chip pwm: clps711x: Changing the compatibility string to match with the smallest supported chip serial: clps711x: Changing the compatibility string to match with the smallest supported chip irqchip: clps711x: Changing the compatibility string to match with the smallest supported chip clocksource: clps711x: Changing the compatibility string to match with the smallest supported chip clk: clps711x: Changing the compatibility string to match with the smallest supported chip ...
2016-08-01Merge tag 'armsoc-soc' of ↵Linus Torvalds5-10/+121
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC platform updates from Olof Johansson: "Improved and new platform support for various SoCs: New SoC support: - Broadcom BCM23550 - Freescale i.MX7Solo - Qualcomm MDM9615 - Renesas r8a7792 Improvements: - convert clps711x to multiplatform - debug uart improvements for Atmel platforms - Tango platform improvements: HOTPLUG_CPU, Suspend-to-ram - OMAP tweaks and improvements to hwmod - OMAP support for kexec on SMP" * tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (109 commits) ARM: davinci: fix build break because of undeclared dm365_evm_snd_data ARM: s3c64xx: smartq: Avoid sparse warnings ARM: sti: Implement dummy L2 cache's write_sec ARM: STi: Update machine _namestr to be more generic. arm: meson: explicitly select clk drivers ARM: tango: add Suspend-to-RAM support ARM: hisi: consolidate the hisilicon machine entries ARM: tango: fix CONFIG_HOTPLUG_CPU=n build MAINTAINERS: Update BCM281XX/BCM11XXX/BCM216XX entry MAINTAINERS: Update BCM63XX entry MAINTAINERS: Add NS2 entry MAINTAINERS: Fix nsp false-positives MAINTAINERS: Change L to M for Broadcom ARM/ARM64 SoC entries ARM: debug: Enable DEBUG_BCM_5301X for Northstar Plus SoCs ARM: clps711x: Switch to MULTIPLATFORM ARM: clps711x: Remove boards support ARM: clps711x: Add basic DT support ARM: clps711x: Reduce static map size ARM: SAMSUNG: Constify iomem address passed to s5p_init_cpu ARM: oxnas: Change OX810SE default driver config ...
2016-07-14Merge tag 'samsung-drivers-4.8-3' of ↵Arnd Bergmann2-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into next/drivers Merge "Samsung drivers/soc update for v4.8, part 3" into next/drivers: 1. Fix size of allocation for Exynos SROM registers (too much was allocated). 2. Constify fix. * tag 'samsung-drivers-4.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux: soc: samsung: pmu: Constify arrays with PMU data memory: samsung: exynos-srom: Fix wrong count of registers
2016-07-14Merge tag 'ux500-cleanup-bundle' of ↵Arnd Bergmann5-0/+232
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson into next/drivers Merge "Ux500 cleanups from Arnd" from Linus Walleij: This is a set of cleanups for the Ux500 that reduce the number of machine-local files and boardfile-type data for regulators and ASoC. * tag 'ux500-cleanup-bundle' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson: ARM: ux500: consolidate base platform files ARM: ux500: move soc_id driver to drivers/soc ARM: ux500: call ux500_setup_id later ARM: ux500: consolidate soc_device code in id.c ARM: ux500: remove cpu_is_u* helpers ARM: ux500: use CLK_OF_DECLARE() ARM: ux500: move l2x0 init to .init_irq mfd: db8500 stop passing around platform data ASoC: ab8500-codec: remove platform data based probe ARM: ux500: move ab8500_regulator_plat_data into driver ARM: ux500: remove unused regulator data
2016-07-12ARM: ux500: move soc_id driver to drivers/socArnd Bergmann5-0/+232
As the ux500 id code is basically a standalone driver, we can move it out of the arch code into drivers/soc/ux500. This is a user-visible change, as it moves all the devices in sysfs from /sys/devices/soc0/ to /sys/devices/ and leaves the soc0 node as a separate device. Originally the idea was to put all on-chip devices under the soc node, and ux500 was the first platform to have this device, but later platforms almost all didn't follow that pattern, so this makes the platform do the same thing as everyone else. Since the platform is really obsolete now, I am optimistic that nothing will break after moving the devices around. As the SoC driver no longer has access to the private header files, I'm changing the code to instead look up the address of the backupram from devicetree, which is a good idea anyway. Finally, having a separate Kconfig symbol means the driver is now optional and could even be a loadable module rather than always being built-in if we allowed that for soc_device. Signed-off-by: Arnd Bergmann <arnd@arndb.de> [Fixup mising Makefile, fixup BB_UID_BASE to fc0] Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-07-07soc: raspberrypi-power: add CONFIG_OF dependencyArnd Bergmann1-2/+1
We get a harmless warning if the RASPBERRYPI_POWER driver is enabled without CONFIG_OF during compile testing: warning: RASPBERRYPI_POWER selects PM_GENERIC_DOMAINS_OF which has unmet direct dependencies (PM_GENERIC_DOMAINS && OF) There is no need to select PM_GENERIC_DOMAINS_OF if OF is set, so we can replace the 'select' with a dependency. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Eric Anholt <eric@anholt.net>
2016-07-06Merge tag 'tegra-for-4.8-soc' of ↵Olof Johansson1-37/+112
git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/drivers soc/tegra: Changes for v4.8-rc1 Contains fixes and cleanups to the PMC driver, as well as some fixes for the generic PM domain support and some prep work to support PCIe on 64- bit ARM. * tag 'tegra-for-4.8-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux: soc/tegra: Stub out PCIe IRQ workaround on 64-bit ARM soc/tegra: pmc: Enable XUSB partitions on boot soc/tegra: pmc: Initialise power partitions early soc/tegra: pmc: Add specific error messages soc/tegra: pmc: Use whitespace more consistently soc/tegra: pmc: Don't probe PMC if early initialisation fails soc/tegra: pmc: Add missing of_node_put() soc/tegra: pmc: Ensure mutex is always initialised soc/tegra: pmc: Don't populate SoC data until register space is mapped soc/tegra: pmc: Fix early initialisation of PMC soc/tegra: pmc: Ensure powergate is available when powering on soc/tegra: pmc: Initialise resets associated with a power partition soc/tegra: pmc: Use register definitions instead of magic values Signed-off-by: Olof Johansson <olof@lixom.net>
2016-07-06Merge tag 'renesas-rcar-sysc2-for-v4.8' of ↵Olof Johansson4-10/+68
git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/drivers Second Round of Renesas ARM Based SoC R-Car SYSC Updates for v4.8 * Prepare for handling SYSC interrupt configuration purely from DT in the rcar-sysc driver for new SoCs, while preserving backward compatibility with old DTBs for R-Car H1, H2, and M2-W * Add R8A7792 support * tag 'renesas-rcar-sysc2-for-v4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas: soc: renesas: rcar-sysc: Improve SYSC interrupt config in legacy wrapper soc: renesas: rcar-sysc: Move SYSC interrupt config to rcar-sysc driver soc: renesas: rcar-sysc: Make rcar_sysc_init() init the PM domains soc: renesas: rcar-sysc: Fix uninitialized error code in rcar_sysc_pd_init() soc: renesas: rcar-sysc: add R8A7792 support Signed-off-by: Olof Johansson <olof@lixom.net>
2016-07-06soc: samsung: pmu: Constify arrays with PMU dataKrzysztof Kozlowski2-2/+2
Arrays storing values for Power Management Unit for given sleep mode can be made const. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
2016-07-04Merge tag 'qcom-drivers-for-4.8' of ↵Olof Johansson4-29/+117
git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux into next/drivers Qualcomm ARM Based Driver Updates for v4.8 * Rework of SCM driver * Add file patterns for Qualcomm Maintainers entry * Add worker for wcnss_ctrl signaling * Fixes for smp2p * Update smem_state properties to match documentation * Add SCM Peripheral Authentication service * Expose SCM PAS command 10 as a reset controller * tag 'qcom-drivers-for-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux: firmware: qcom: scm: Expose PAS command 10 as reset-controller firmware: qcom: scm: Peripheral Authentication Service soc: qcom: Update properties for smem state referencing soc: qcom: smp2p: Drop io-accessors soc: qcom: smp2p: Correct addressing of outgoing value soc: qcom: wcnss_ctrl: Make wcnss_ctrl parent the other components firmware: qcom: scm: Add support for ARM64 SoCs firmware: qcom: scm: Convert to streaming DMA APIS firmware: qcom: scm: Generalize shared error map firmware: qcom: scm: Use atomic SCM for cold boot firmware: qcom: scm: Convert SCM to platform driver MAINTAINERS: Add file patterns for qcom device tree bindings Signed-off-by: Olof Johansson <olof@lixom.net>
2016-06-30soc/tegra: pmc: Enable XUSB partitions on bootJon Hunter1-0/+12
The Tegra XHCI driver does not currently manage the Tegra XUSB power partitions and so it these partitions have not been enabled by the bootloader then the system will crash when probing the XHCI device. While proper support for managing the power partitions is being developed to the XHCI driver for Tegra, for now power on all the XUSB partitions for USB host and super-speed on boot if the XHCI driver is enabled. Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-06-30soc/tegra: pmc: Initialise power partitions earlyJon Hunter1-9/+17
If CONFIG_PM_GENERIC_DOMAINS is not enabled, then power partitions associated with a device will not be enabled automatically by the PM core when the device is in use. To avoid situations where a device in a power partition is to be used but the partition is not enabled, initialise the power partitions for Tegra early in the boot process and if CONFIG_PM_GENERIC_DOMAINS is not enabled, then power on all partitions defined in the device-tree blob. Note that if CONFIG_PM_GENERIC_DOMAINS is not enabled, after the partitions are turned on, the clocks and resets used as part of the sequence for turning on the partition are released again as they are no longer needed by the PMC driver. Another benefit of this is that this avoids any issues of sharing resets between the PMC driver and other device drivers that may wish to independently control a particular reset. Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-06-30soc/tegra: pmc: Add specific error messagesJon Hunter1-9/+21
When initialising a powergate, only a single error message is shown if the initialisation fails. Add more error messages to give specific details of what failed if the initialisation failed and remove the generic failure message. Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-06-30soc/tegra: pmc: Use whitespace more consistentlyThierry Reding1-0/+6
Use blank lines after blocks and before labels for consistency with the existing code in the file. Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-06-30soc/tegra: pmc: Don't probe PMC if early initialisation failsJon Hunter1-0/+8
Commit 0259f522e04f ('soc/tegra: pmc: Restore base address on probe failure') fixes an issue where the PMC base address pointer is not restored on probe failure. However, this fix creates another problem where if early initialisation of the PMC driver fails and an initial mapping for the PMC address space is not created, then when the PMC device is probed, the PMC base address pointer will not be valid and this will cause a crash when tegra_pmc_init() is called and attempts to access a register. Although the PMC address space is mapped a 2nd time during the probe and so this could be fixed by populating the base address pointer earlier during the probe, this adds more complexity to the code. Moreover, the PMC probe also assumes the the soc data pointer is also initialised when the device is probed and if not will also lead to a crash when calling tegra_pmc_init_tsense_reset(). Given that if the early initialisation does fail then something bad has happen, it seems acceptable to allow the PMC device probe to fail as well. Therefore, if the PMC base address pointer or soc data pointer are not valid when probing the PMC device, WARN and return an error. Fixes: 0259f522e04f ('soc/tegra: pmc: Restore base address on probe failure') Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-06-30soc/tegra: pmc: Add missing of_node_put()Jon Hunter1-0/+4
Add missing of_node_put() in PMC early initialisation function to avoid leaking the device nodes. Signed-off-by: Jon Hunter <jonathanh@nvidia.com> [treding@nvidia.com: squash in a couple more of_node_put() calls] Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-06-30soc/tegra: pmc: Ensure mutex is always initialisedJon Hunter1-2/+2
The mutex used by the PMC driver may not be initialised if early initialisation of the driver fails. If this does happen, then it could be possible for callers of the public PMC functions to still attempt to acquire the mutex. Fix this by initialising the mutex as soon as possible to ensure it will always be initialised. Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-06-30soc/tegra: pmc: Don't populate SoC data until register space is mappedJon Hunter1-2/+2
The public functions exported by the PMC driver use the presence of the SoC data pointer to determine if the PMC device is configured and the registers can be accessed. However, the SoC data is populated before the PMC register space is mapped and this opens a window where the SoC data pointer is valid but the register space has not yet been mapped which could lead to a crash. Furthermore, if the mapping of the PMC register space fails, then the SoC data pointer is not cleared and so would expose a larger window where a crash could occur. Fix this by initialising the SoC data pointer after the PMC register space has been mapped. Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-06-30soc/tegra: pmc: Fix early initialisation of PMCJon Hunter1-16/+18
During early initialisation, the available power partitions for a given device is configured as well as the polarity of the PMC interrupt. Both of which should only be configured if there is a valid device node for the PMC device. This is because the soc data used for configuring the power partitions is only available if a device node for the PMC is found and the code to configure the interrupt polarity uses the device node pointer directly. Some early device-tree images may not have this device node and so fix this by ensuring the device node pointer is valid when configuring these items. Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-06-30soc/tegra: pmc: Ensure powergate is available when powering onJon Hunter1-0/+3
The function tegra_power_sequence_power_up() is a public function used to power on a partition. When this function is called, we do not check to see if the partition being powered up is valid/available. Fix this by checking to see that the partition is valid/available. Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-06-30soc/tegra: pmc: Initialise resets associated with a power partitionJon Hunter1-4/+14
When registering the Tegra power partitions with the generic PM domain framework, the current state of the each partition is checked and used as the default state for the partition. However, the state of each reset associated with the partition is not initialised and so it is possible that the state of the resets are not in the expected state. For example, if a partition is on, then the resets should be de-asserted and if the partition is off, the resets should be asserted. There have been cases where the bootloader has powered on a partition and only de-asserted some of the resets to some of the devices in the partition. This can cause accesses to these devices to hang the system when the kernel boots and attempts to probe these devices. Ideally, the driver for the device should ensure the reset has been de-asserted when probing, but the resets cannot be shared between the PMC driver (that needs to de-assert/assert the reset when turning the partition on or off) and another driver because we cannot ensure the reset is in the correct state. To ensure the resets are in the correct state, when using the generic PM domain framework, put each reset associated with the partition in the correct state (based upon the partition's current state) when obtaining the resets for a partition. Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-06-29soc: renesas: rcar-sysc: Improve SYSC interrupt config in legacy wrapperGeert Uytterhoeven1-2/+15
Align SYSC interrupt configuration in the legacy wrapper with the DT version: - Mask SYSC interrupt sources before enabling them (doesn't matter much as they're disabled at the GIC level anyway), - Make sure not to clear reserved SYSCIMR bits that were set before. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-06-29soc: renesas: rcar-sysc: Move SYSC interrupt config to rcar-sysc driverGeert Uytterhoeven1-4/+8
On R-Car H1 and Gen2, the SYSC interrupt registers are always configured using hardcoded values in platform code. For R-Car Gen2, values are provided for H2 and M2-W only, other SoCs are not yet supported, and never will be. Move this configuration from SoC-specific platform code to the rcar_sysc_init() wrapper, so it can be skipped if the SYSC is configured from DT. This would be the case not only for H1, H2, and M2-W using a modern DTS, but also for other R-Car Gen2 SoCs not supported by the platform code, relying purely on DT. There is no longer a need to return the mapped register block, hence make the function return void. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-06-29soc: renesas: rcar-sysc: Make rcar_sysc_init() init the PM domainsGeert Uytterhoeven1-9/+11
Let rcar_sysc_init() trigger initialization of the SYSC PM domains from DT if called before the early_initcall. On failure, it falls back to mapping the passed register block, as before. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-06-29soc: renesas: rcar-sysc: Fix uninitialized error code in rcar_sysc_pd_init()Geert Uytterhoeven1-1/+1
On success, rcar_sysc_pd_init() returns an uninitialized error code. Use the return value of of_genpd_add_provider_onecell() to fix this. This went unnoticed, as early_initcall() doesn't care about the return value. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-06-24soc: qcom: Update properties for smem state referencingBjorn Andersson2-7/+7
Update the property names to match device tree bindings, the correct values should be qcom,smem-states and qcom,smem-state-names. Also update the #qcom,smem-state-cells for consistency, before we merge any users of these properties. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Andy Gross <andy.gross@linaro.org>
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