aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-omap2/prm_common.c (follow)
AgeCommit message (Collapse)AuthorFilesLines
2022-04-21ARM: OMAP2+: add missing of_node_put before break and returnWang Qing1-2/+6
Fix following coccicheck warning: WARNING: Function "for_each_matching_node_and_match" should have of_node_put() before return. Early exits from for_each_matching_node_and_match should decrement the node reference counter. Signed-off-by: Wang Qing <wangqing@vivo.com> Message-Id: <1639388545-63615-1-git-send-email-wangqing@vivo.com> [tony@atomide.com: updated for omap_hwmod.c that was already patched] Signed-off-by: Tony Lindgren <tony@atomide.com>
2019-06-19treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500Thomas Gleixner1-5/+1
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-02-01ARM: avoid Cortex-A9 livelock on tight dmb loopsRussell King1-1/+3
machine_crash_nonpanic_core() does this: while (1) cpu_relax(); because the kernel has crashed, and we have no known safe way to deal with the CPU. So, we place the CPU into an infinite loop which we expect it to never exit - at least not until the system as a whole is reset by some method. In the absence of erratum 754327, this code assembles to: b . In other words, an infinite loop. When erratum 754327 is enabled, this becomes: 1: dmb b 1b It has been observed that on some systems (eg, OMAP4) where, if a crash is triggered, the system tries to kexec into the panic kernel, but fails after taking the secondary CPU down - placing it into one of these loops. This causes the system to livelock, and the most noticable effect is the system stops after issuing: Loading crashdump kernel... to the system console. The tested as working solution I came up with was to add wfe() to these infinite loops thusly: while (1) { cpu_relax(); wfe(); } which, without 754327 builds to: 1: wfe b 1b or with 754327 is enabled: 1: dmb wfe b 1b Adding "wfe" does two things depending on the environment we're running under: - where we're running on bare metal, and the processor implements "wfe", it stops us spinning endlessly in a loop where we're never going to do any useful work. - if we're running in a VM, it allows the CPU to be given back to the hypervisor and rescheduled for other purposes (maybe a different VM) rather than wasting CPU cycles inside a crashed VM. However, in light of erratum 794072, Will Deacon wanted to see 10 nops as well - which is reasonable to cover the case where we have erratum 754327 enabled _and_ we have a processor that doesn't implement the wfe hint. So, we now end up with: 1: wfe b 1b when erratum 754327 is disabled, or: 1: dmb nop nop nop nop nop nop nop nop nop nop wfe b 1b when erratum 754327 is enabled. We also get the dmb + 10 nop sequence elsewhere in the kernel, in terminating loops. This is reasonable - it means we get the workaround for erratum 794072 when erratum 754327 is enabled, but still relinquish the dead processor - either by placing it in a lower power mode when wfe is implemented as such or by returning it to the hypervisior, or in the case where wfe is a no-op, we use the workaround specified in erratum 794072 to avoid the problem. These as two entirely orthogonal problems - the 10 nops addresses erratum 794072, and the wfe is an optimisation that makes the system more efficient when crashed either in terms of power consumption or by allowing the host/other VMs to make use of the CPU. I don't see any reason not to use kexec() inside a VM - it has the potential to provide automated recovery from a failure of the VMs kernel with the opportunity for saving a crashdump of the failure. A panic() with a reboot timeout won't do that, and reading the libvirt documentation, setting on_reboot to "preserve" won't either (the documentation states "The preserve action for an on_reboot event is treated as a destroy".) Surely it has to be a good thing to avoiding having CPUs spinning inside a VM that is doing no useful work. Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2018-06-12treewide: kzalloc() -> kcalloc()Kees Cook1-4/+5
The kzalloc() function has a 2-factor argument form, kcalloc(). This patch replaces cases of: kzalloc(a * b, gfp) with: kcalloc(a * b, gfp) as well as handling cases of: kzalloc(a * b * c, gfp) with: kzalloc(array3_size(a, b, c), gfp) as it's slightly less ugly than: kzalloc_array(array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: kzalloc(4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( kzalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | kzalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( kzalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(__u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(char) * COUNT + COUNT , ...) | kzalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ - kzalloc + kcalloc ( - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( kzalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( kzalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( kzalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( kzalloc(C1 * C2 * C3, ...) | kzalloc( - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | kzalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( kzalloc(sizeof(THING) * C2, ...) | kzalloc(sizeof(TYPE) * C2, ...) | kzalloc(C1 * C2 * C3, ...) | kzalloc(C1 * C2, ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - (E1) * E2 + E1, E2 , ...) | - kzalloc + kcalloc ( - (E1) * (E2) + E1, E2 , ...) | - kzalloc + kcalloc ( - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
2017-10-10ARM: OMAP4: Remove legacy IRQ for PRMTony Lindgren1-9/+3
We have the PRM IRQ mapped in device tree and this legacy code is no longer needed. Cc: Lokesh Vutla <lokeshvutla@ti.com> Cc: Paul Walmsley <paul@pwsan.com> Cc: Tero Kristo <t-kristo@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2017-06-18Merge tag 'omap-for-v4.13/soc-v4-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/socOlof Johansson1-16/+16
SoC changes for omap variants for v4.13 merge window: - PM clean-up in preparation of adding am335x/am437x PM support - Fixes for issues found by Coccinelle - Legacy code removal now that everything boots in device tree only mode - Interconnect changes in preparation of moving clkctrl clocks to be managed by clkctrl clock driver - Interconnect changes to add omap4 crypto acceclerator support * tag 'omap-for-v4.13/soc-v4-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (27 commits) ARM: OMAP4: hwmod_data: add SHAM crypto accelerator ARM: OMAP4: hwmod data: add des ARM: OMAP4: hwmod data: add aes2 ARM: OMAP4: hwmod data: add aes1 ARM: OMAP2+: Remove unused legacy code for n8x0 ARM: OMAP2+: Remove unused legacy code for watchdog ARM: OMAP2+: Remove unused legacy code for interconnects ARM: OMAP2+: Remove unused legacy code for PRM ARM: OMAP2+: Remove unused legacy code for io.c ARM: OMAP2+: Remove unused legacy code for McBSP ARM: OMAP2+: SmartReflex: Delete an error message for a failed memory allocation in two functions ARM: OMAP2+: Use kcalloc() in sr_set_nvalues() ARM: OMAP2+: Improve a size determination in sr_dev_init() ARM: OMAP2+: Delete an error message for a failed memory allocation in two functions ARM: OMAP2+: Remove unused legacy code for device init ARM: OMAP2+: Remove unused legacy code for PMU ARM: OMAP2+: Remove unused legacy code for opp ARM: OMAP2+: hwmod: populate clkctrl clocks for hwmods if available ARM: OMAP4: cminst: add support for clkdm_xlate_address ARM: omap2+: clockdomain: add clkdm_xlate_address ... Signed-off-by: Olof Johansson <olof@lixom.net>
2017-06-12Merge branch 'omap-for-v4.13/clkctrl' into omap-for-v4.13/soc-v4Tony Lindgren1-10/+13
2017-06-08ARM: OMAP2+: Remove unused legacy code for PRMTony Lindgren1-6/+3
We are now booting all mach-omap2 in device tree only mode. Any code that is only called in legacy boot mode where of_have_populated_dt() is not set is safe to remove now. Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk> Signed-off-by: Tony Lindgren <tony@atomide.com>
2017-06-06ARM: OMAP2+: PRCM: store also physical addresses for instancesTero Kristo1-10/+13
In some cases the physical address info is needed, so store this under the existing cm*_base, prm_base and prcm_mpu_base variables. These are converted now to structs that contain both virtual and physical address base for the instance. Signed-off-by: Tero Kristo <t-kristo@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2017-05-19ARM: remove duplicate 'const' annotations'Arnd Bergmann1-1/+1
gcc-7 warns about some declarations that are more 'const' than necessary: arch/arm/mach-at91/pm.c:338:34: error: duplicate 'const' declaration specifier [-Werror=duplicate-decl-specifier] static const struct of_device_id const ramc_ids[] __initconst = { arch/arm/mach-bcm/bcm_kona_smc.c:36:34: error: duplicate 'const' declaration specifier [-Werror=duplicate-decl-specifier] static const struct of_device_id const bcm_kona_smc_ids[] __initconst = { arch/arm/mach-spear/time.c:207:34: error: duplicate 'const' declaration specifier [-Werror=duplicate-decl-specifier] static const struct of_device_id const timer_of_match[] __initconst = { arch/arm/mach-omap2/prm_common.c:714:34: error: duplicate 'const' declaration specifier [-Werror=duplicate-decl-specifier] static const struct of_device_id const omap_prcm_dt_match_table[] __initconst = { arch/arm/mach-omap2/vc.c:562:35: error: duplicate 'const' declaration specifier [-Werror=duplicate-decl-specifier] static const struct i2c_init_data const omap4_i2c_timing_data[] __initconst = { The ones in arch/arm were apparently all introduced accidentally by one commit that correctly marked a lot of variables as __initconst. Fixes: 19c233b79d1a ("ARM: appropriate __init annotation for const data") Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Krzysztof Hałasa <khalasa@piap.pl> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2016-12-27ARM: OMAP2+: PRM: Delete an error message for a failed memory allocationMarkus Elfring1-3/+1
Omit an extra message for a memory allocation failure in this function. Link: http://events.linuxfoundation.org/sites/events/files/slides/LCJ16-Refactor_Strings-WSang_0.pdf Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-12-22ARM: OMAP2+: Fix randconfig build warning for dm814_pllss_dataTony Lindgren1-0/+2
Fix warning for arch/arm/mach-omap2/prm_common.c:666:35: warning: ‘dm814_pllss_data’ defined but not used [-Wunused-variable]". This can happen if CONFIG_SOC_TI81XX is not selected. Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-12-09ARM: OMAP2+: Add DPPLS clock manager for dm814xTony Lindgren1-0/+6
On dm814x we have some clocks at DPLLS and some at PRCM. Let's add a new omap_prcm_init_data entry for the DPLLS so we can initalize timer clocks early. Cc: Paul Walmsley <paul@pwsan.com> Cc: Tero Kristo <t-kristo@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-09-16genirq: Remove irq argument from irq flow handlersThomas Gleixner1-1/+1
Most interrupt flow handlers do not use the irq argument. Those few which use it can retrieve the irq number from the irq descriptor. Remove the argument. Search and replace was done with coccinelle and some extra helper scripts around it. Thanks to Julia for her help! Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Jiang Liu <jiang.liu@linux.intel.com>
2015-09-01Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-socLinus Torvalds1-0/+1
Pull ARM SoC platform updates from Olof Johansson: "New or improved SoC support: - add support for Atmel's SAMA5D2 SoC - add support for Freescale i.MX6UL - improved support for TI's DM814x platform - misc fixes and improvements for RockChip platforms - Marvell MVEBU suspend/resume support A few driver changes that ideally would belong in the drivers branch are also here (acked by appropriate maintainers): - power key input driver for Freescale platforms (svns) - RTC driver updates for Freescale platforms (svns/mxc) - clk fixes for TI DM814/816X + a bunch of other changes for various platforms" * tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (83 commits) ARM: rockchip: pm: Fix PTR_ERR() argument ARM: imx: mach-imx6ul: Fix allmodconfig build clk: ti: fix for definition movement ARM: uniphier: drop v7_invalidate_l1 call at secondary entry memory: kill off set_irq_flags usage rtc: snvs: select option REGMAP_MMIO ARM: brcmstb: select ARCH_DMA_ADDR_T_64BIT for LPAE ARM: BCM: Enable ARM erratum 798181 for BRCMSTB ARM: OMAP2+: Fix power domain operations regression caused by 81xx ARM: rockchip: enable PMU_GPIOINT_WAKEUP_EN when entering shallow suspend ARM: rockchip: set correct stabilization thresholds in suspend ARM: rockchip: rename osc_switch_to_32k variable ARM: imx6ul: add fec MAC refrence clock and phy fixup init ARM: imx6ul: add fec bits to GPR syscon definition rtc: mxc: add support of device tree dt-binding: document the binding for mxc rtc rtc: mxc: use a second rtc clock ARM: davinci: cp_intc: use IRQCHIP_SKIP_SET_WAKE instead of irq_set_wake callback soc: mediatek: Fix SCPSYS compilation ARM: at91/soc: add basic support for new sama5d2 SoC ...
2015-07-28ARM: appropriate __init annotation for const dataNicolas Pitre1-1/+1
Init data marked const should be annotated with __initconst for correctness and not __initdata. In some cases the array gathering references to that data has to be marked const as well. This fixes LTO builds that otherwise fail with section mismatch errors. Signed-off-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Olof Johansson <olof@lixom.net>
2015-07-23ARM: PRM: AM437x: Enable IO wakeup featureKeerthy1-0/+1
Enable IO wakeup feature. This enables am437x pads to generate daisy chained wake ups(eventually generates aprcm Interrupt) especially when in low power modes. Signed-off-by: Keerthy <j-keerthy@ti.com> Reviewed-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Paul Walmsley <paul@pwsan.com>
2015-03-31ARM: OMAP2+: clock: add low-level support for regmapTero Kristo1-1/+1
Some of the TI clock providers will be converted to use syscon, thus low-level regmap support is needed for the clock drivers also. This patch adds this support, which can be enabled for individual drivers in later patches. Signed-off-by: Tero Kristo <t-kristo@ti.com>
2015-03-31ARM: OMAP4+: PRM: get rid of cpu_is_omap44xx calls from interrupt initTero Kristo1-1/+1
The compatible DT node is now passed with the prm init, so there is no need to do node matching here again. Added a new flag to the init data also, to detect default IRQ support for OMAP4. Also, any booting omap4 DT setup always has a PRM node, so there is no need to check against the special case where it would be missing. Signed-off-by: Tero Kristo <t-kristo@ti.com>
2015-03-31ARM: OMAP4+: PRM: setup prm_features from the PRM init time flagsTero Kristo1-0/+3
Currently some cpu_is_X checks are used to setup prm_features, however the same can be accomplished by just passing these flags from the PRM init data. This is done in preparation to make PRM a separate driver. Signed-off-by: Tero Kristo <t-kristo@ti.com>
2015-03-31ARM: OMAP2+: CM: move SoC specific init calls within a generic APITero Kristo1-1/+7
This gets rid of need for some exported driver APIs, and simplifies the initialization of the CM driver. Done in preparation to make CM a separate driver. The init data is now also passed to the SoC specific implementations, allowing future expansion to add feature flags etc. Signed-off-by: Tero Kristo <t-kristo@ti.com>
2015-03-31ARM: OMAP4+: PRM: determine prm_device_inst based on DT compatibilityTero Kristo1-5/+32
PRM device instance offset is now provided through the prm_init_data. This gets rid of some cpu_is_X / soc_is_X calls from PRM core code, preparing for PRM to be its own separate driver. Signed-off-by: Tero Kristo <t-kristo@ti.com>
2015-03-31ARM: OMAP2+: PRM: move SoC specific init calls within a generic APITero Kristo1-13/+63
This gets rid of need for some exported driver APIs, and simplifies the initialization of the PRM driver. Done in preparation to make PRM a separate driver. The init data is now also passed to the SoC specific implementations, allowing future expansion to add feature flags etc. Signed-off-by: Tero Kristo <t-kristo@ti.com>
2015-03-27ARM: OMAP2+: control: determine control module base address from DTTero Kristo1-5/+0
There is no need to provide the control module base address through a low-level API from the low-level IO init, as this information is available through DT. This patch adds a new API to initialize the control module though, but mostly makes the old API obsolete. The old API can be completely removed once OMAP3 is made DT only. Signed-off-by: Tero Kristo <t-kristo@ti.com>
2015-03-27ARM: OMAP2+: PRM: determine PRM base address from device treeTero Kristo1-9/+42
There is no need to provide the PRM base address through a low-level API from the low-level IO init, as this information is available through DT. Re-routed the parsing function to be called from the PRM drivers also to simplify the implementation under io.c. Signed-off-by: Tero Kristo <t-kristo@ti.com>
2015-03-27ARM: OMAP2+: CM: determine CM base address from device treeTero Kristo1-1/+0
There is no need to provide the CM base address through a low-level API from the low-level IO init, as this information is available through DT. Re-routed the parsing function to be called from the CM drivers also to simplify the implementation under io.c. Signed-off-by: Tero Kristo <t-kristo@ti.com>
2015-03-27ARM: OMAP2+: PRCM: split PRCM module init to their own driver filesTero Kristo1-21/+2
Splits the clock related provider module inits under their own driver files. Previously this was done for all modules under the common PRM driver. Signed-off-by: Tero Kristo <t-kristo@ti.com>
2015-03-27ARM: OMAP2+: clock: move clock provider infrastructure to clock driverTero Kristo1-28/+8
Splits the clock provider init out of the PRM driver and moves it to clock driver. This is needed so that once the PRCM drivers are separated, they can logically just access the clock driver not needing to go through common PRM code. This would be wrong in the case of control module for example. Signed-off-by: Tero Kristo <t-kristo@ti.com>
2015-03-25ARM: OMAP2+: PRCM: add support for static clock memmap indicesTero Kristo1-29/+50
All clock provider related drivers will now register their iomaps with a static index. This makes it easier to split up the individual drivers to their own files in subsequent patches. Signed-off-by: Tero Kristo <t-kristo@ti.com>
2015-03-25ARM: OMAP3+: PRM: add common APIs for prm_vp_check/clear_txdoneTero Kristo1-0/+34
PRM driver now only exports a generic API for clearing / checking VP txdone status. Signed-off-by: Tero Kristo <t-kristo@ti.com>
2015-03-25ARM: OMAP2+: PRM: add generic API for clear_mod_irqsTero Kristo1-0/+21
OMAP2/3 now use generic API for the prm_clear_mod_irqs, the SoC specific implementation details are provided through prm_ll_data. Signed-off-by: Tero Kristo <t-kristo@ti.com>
2015-03-25ARM: OMAP2+: PRCM: rename of_prcm_init to omap_prcm_initTero Kristo1-1/+7
This avoids conflicts in the global namespace, and is more descriptive of the purpose anyway. Signed-off-by: Tero Kristo <t-kristo@ti.com>
2015-02-21Merge tag 'clk-for-linus-3.20' of git://git.linaro.org/people/mike.turquette/linuxLinus Torvalds1-0/+11
Pull clock framework updates from Mike Turquette: "The clock framework changes contain the usual driver additions, enhancements and fixes mostly for ARM32, ARM64, MIPS and Power-based devices. Additionally the framework core underwent a bit of surgery with two major changes: - The boundary between the clock core and clock providers (e.g clock drivers) is now more well defined with dedicated provider helper functions. struct clk no longer maps 1:1 with the hardware clock but is a true per-user cookie which helps us tracker users of hardware clocks and debug bad behavior. - The addition of rate constraints for clocks. Rate ranges are now supported which are analogous to the voltage ranges in the regulator framework. Unfortunately these changes to the core created some breakeage. We think we fixed it all up but for this reason there are lots of last minute commits trying to undo the damage" * tag 'clk-for-linus-3.20' of git://git.linaro.org/people/mike.turquette/linux: (113 commits) clk: Only recalculate the rate if needed Revert "clk: mxs: Fix invalid 32-bit access to frac registers" clk: qoriq: Add support for the platform PLL powerpc/corenet: Enable CLK_QORIQ clk: Replace explicit clk assignment with __clk_hw_set_clk clk: Add __clk_hw_set_clk helper function clk: Don't dereference parent clock if is NULL MIPS: Alchemy: Remove bogus args from alchemy_clk_fgcs_detr clkdev: Always allocate a struct clk and call __clk_get() w/ CCF clk: shmobile: div6: Avoid division by zero in .round_rate() clk: mxs: Fix invalid 32-bit access to frac registers clk: omap: compile legacy omap3 clocks conditionally clkdev: Export clk_register_clkdev clk: Add rate constraints to clocks clk: remove clk-private.h pci: xgene: do not use clk-private.h arm: omap2+ remove dead clock code clk: Make clk API return per-user struct clk instances clk: tegra: Define PLLD_DSI and remove dsia(b)_mux clk: tegra: Add support for the Tegra132 CAR IP block ...
2015-02-17Merge tag 'fixes-non-critical-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-socLinus Torvalds1-0/+4
Pull ARM SoC non-critical fixes from Olof Johansson: "Here's a small collection of fixes accrued during the last release that weren't considered severe enough to merge during the -rc series. A few of these are around resurrecting TI81xx support that's been broken for quite a while, the rest are smaller fixes -- most for PXA but a few across the board. There are also some updates to MAINTAINERS here, in particular for Broadcom platforms" * tag 'fixes-non-critical-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (23 commits) MAINTAINERS: fix git repositories for Broadcom SoCs ARM: pxa: fix broken isa interrupts for zeus and viper ARM: DRA7: hwmod: Fix boot crash with DEBUG_LL enabled on UART3 ARM: OMAP: DRA7: hwmod: Make gpmc software supervised as the smart idle is broken ARM: AM43xx: hwmod: set DSS submodule parent hwmods ARM: OMAP2+: hwmod: print error if wait_target_ready() failed MAINTAINERS: add maintainer for OMAP hwmod data ARM: OMAP2+: Disable omap3 PM init for ti81xx ARM: OMAP2+: Fix reboot for 81xx ARM: OMAP2+: Fix dm814 and dm816 for clocks and timer init ARM: OMAP2+: Fix ti81xx class type ARM: OMAP2+: Fix ti81xx devtype ARM: OMAP2+: Fix error handling for omap2_clk_enable_init_clocks MAINTAINERS: add a git entry for BMIPS-based BCM7xxx SoCs MAINTAINERS: add a git entry for BCM7xxx ARM-based SoCs MAINTAINERS: update Broadcom Cygnus SoC git tree MAINTAINERS: move BCM63xx ARM-based SoCs git tree hx4700: regulator: declare full constraints ARM: pxa: add regulator_has_full_constraints to spitz board file ARM: pxa: add regulator_has_full_constraints to poodle board file ...
2015-02-02Merge branch 'clk-next' into v3.19-rc7Michael Turquette1-0/+11
2015-01-30ARM: OMAP3: PRM: add support for legacy iomapping initTero Kristo1-0/+11
As the legacy clock data is being moved under clock driver, the clock data will be using the same low level infrastructure for register accesses. This requires the clk_memmaps to be initialized properly. This patch adds a support hook to the PRM driver to initialize the mappings. Signed-off-by: Tero Kristo <t-kristo@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Michael Turquette <mturquette@linaro.org>
2015-01-17ARM: OMAP: Work around hardcoded interruptsMarc Zyngier1-2/+12
Commit 9a1091ef0017 ("irqchip: gic: Support hierarchy irq domain") changed the GIC driver to use a non-legacy IRQ domain on DT platforms. This patch assumes that DT-driven systems are getting all of their interrupts from device tree. Turns out that OMAP has quite a few hidden gems, and still uses hardcoded interrupts despite having fairly complete DTs. This patch attempts to work around these by offering a translation method that can be called directly from the hwmod code, if present. The same hack is sprinkled over PRCM and TWL. It isn't pretty, but it seems to do the job without having to add more hacks to the interrupt controller code. Tested on OMAP4 (Panda-ES) and OMAP5 (UEVM5432). Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Nishanth Menon <nm@ti.com> [tony@atomide.com: updated to fix make randconfig issue] Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-01-14ARM: OMAP2+: Fix dm814 and dm816 for clocks and timer initTony Lindgren1-0/+4
Fix dm814 and dm816 clocks and timer init. Cc: Brian Hutchinson <b.hutchman@gmail.com> Cc: Paul Walmsley <paul@pwsan.com> Cc: Tero Kristo <t-kristo@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2014-10-27ARM: OMAP2+: PRM: provide generic API for system resetTero Kristo1-0/+19
This patch combines the various prm_warm_reset calls under a common API prm_reset_system, and adds the SoC specific implementation under prm_ll_data. Signed-off-by: Tero Kristo <t-kristo@ti.com> Acked-by: Paul Walmsley <paul@pwsan.com> Tested-by: Nishanth Menon <nm@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2014-10-27ARM: OMAP3+: PRM: add generic API for reconfiguring I/O chainTero Kristo1-0/+16
This adds a generic API for reconfiguring the I/O chain. The implementation will call the SoC specific function registered during init time. The SoC specific reconfigure functions are also made static, as they don't need to be accessed outside the PRM driver itself. Signed-off-by: Tero Kristo <t-kristo@ti.com> Acked-by: Paul Walmsley <paul@pwsan.com> Tested-by: Nishanth Menon <nm@ti.com> [tony@atomide.com: updated for recent omap3 prcm fixes] Signed-off-by: Tony Lindgren <tony@atomide.com>
2014-10-27ARM: OMAP2+: PRM: add generic API for checking hardreset statusTero Kristo1-0/+20
PRM driver now has a generic API for checking hardreset status. SoC specific support functions are registered through the prm_ll_data. Signed-off-by: Tero Kristo <t-kristo@ti.com> Acked-by: Paul Walmsley <paul@pwsan.com> Tested-by: Nishanth Menon <nm@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2014-10-27ARM: OMAP2+: PRM: add generic API for deasserting hardware resetTero Kristo1-0/+24
PRM driver now has a generic API for deasserting hardware resets. SoC specific support functions are registered through the prm_ll_data. Signed-off-by: Tero Kristo <t-kristo@ti.com> Acked-by: Paul Walmsley <paul@pwsan.com> Tested-by: Nishanth Menon <nm@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2014-10-27ARM: OMAP2+: PRM: add generic API for asserting hardware resetTero Kristo1-0/+20
PRM driver now has a generic API for asserting hardware resets. SoC specific support functions are registered through the prm_ll_data. Signed-off-by: Tero Kristo <t-kristo@ti.com> Acked-by: Paul Walmsley <paul@pwsan.com> Tested-by: Nishanth Menon <nm@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2014-10-15Merge tag 'clk-for-linus-3.18' of git://git.linaro.org/people/mike.turquette/linuxLinus Torvalds1-2/+0
Pull clock tree updates from Mike Turquette: "The clk tree changes for 3.18 are dominated by clock drivers. Mostly fixes and enhancements to existing drivers as well as new drivers. This tag contains a bit more arch code than I usually take due to some OMAP2+ changes. Additionally it contains the restart notifier handlers which are merged as a dependency into several trees. The PXA changes are the only messy part. Due to having a stable tree I had to revert one patch and follow up with one more fix near the tip of this tag. Some dead code is introduced but it will soon become live code after 3.18-rc1 is released as the rest of the PXA family is converted over to the common clock framework. Another trend in this tag is that multiple vendors have started to push the complexity of changing their CPU frequency into the clock driver, whereas this used to be done in CPUfreq drivers. Changes to the clk core include a generic gpio-clock type and a clk_set_phase() function added to the top-level clk.h api. Due to some confusion on the fbdev mailing list the kernel boot parameters documentation was updated to further explain the clk_ignore_unused parameter, which is often required by users of the simplefb driver. Finally some fixes to the locking around the clock debugfs stuff was done to prevent deadlocks when interacting with other subsystems." * tag 'clk-for-linus-3.18' of git://git.linaro.org/people/mike.turquette/linux: (99 commits) clk: pxa clocks build system fix Revert "arm: pxa: Transition pxa27x to clk framework" clk: samsung: register restart handlers for s3c2412 and s3c2443 clk: rockchip: add restart handler clk: rockchip: rk3288: i2s_frac adds flag to set parent's rate doc/kernel-parameters.txt: clarify clk_ignore_unused arm: pxa: Transition pxa27x to clk framework dts: add devicetree bindings for pxa27x clocks clk: add pxa27x clock drivers arm: pxa: add clock pll selection bits clk: dts: document pxa clock binding clk: add pxa clocks infrastructure clk: gpio-gate: Ensure gpiod_ APIs are prototyped clk: ti: dra7-atl-clock: Mark the device as pm_runtime_irq_safe clk: ti: LLVMLinux: Move __init outside of type definition clk: ti: consider the fact that of_clk_get() might return an error clk: ti: dra7-atl-clock: fix a memory leak clk: ti: change clock init to use generic of_clk_init clk: hix5hd2: add I2C clocks clk: hix5hd2: add watchdog0 clocks ...
2014-09-29clk: ti: change clock init to use generic of_clk_initTero Kristo1-2/+0
Previously, the TI clock driver initialized all the clocks hierarchically under each separate clock provider node. Now, each clock that requires IO access will instead check their parent node to find out which IO range to use. This patch allows the TI clock driver to use a few new features provided by the generic of_clk_init, and also allows registration of clock nodes outside the clock hierarchy (for example, any external clocks.) Signed-off-by: Tero Kristo <t-kristo@ti.com> Cc: Mike Turquette <mturquette@linaro.org> Cc: Paul Walmsley <paul@pwsan.com> Cc: Tony Lindgren <tony@atomide.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Ujfalusi <peter.ujfalusi@ti.com> Cc: Jyri Sarha <jsarha@ti.com> Cc: Stefan Assmann <sassmann@kpanic.de> Acked-by: Tony Lindgren <tony@atomide.com>
2014-09-11ARM: OMAP2+: make of_device_ids constUwe Kleine-König1-1/+1
of_device_ids (i.e. compatible strings and the respective data) are not supposed to change at runtime. All functions working with of_device_ids provided by <linux/of.h> work with const of_device_ids. So mark the non-const function parameters and structs for OMAP2+ as const, too. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Tony Lindgren <tony@atomide.com>
2014-07-02ARM: OMAP2: PRM: add support for OMAP2 specific clock providersTero Kristo1-0/+2
This patch adds support for initializing also omap2-prcm and omap2-scrm through DT. Signed-off-by: Tero Kristo <t-kristo@ti.com>
2014-05-15ARM: OMAP3/4: PRM: add support of late_init call to prm_ll_opsTero Kristo1-0/+8
SoC specific late_init call is now registered during PRM init, and will be called automatically by PRM core. This helps to get rid of some redundant initcalls and cpu_is_X checks from the PRM code. Signed-off-by: Tero Kristo <t-kristo@ti.com> Signed-off-by: Paul Walmsley <paul@pwsan.com>
2014-05-15ARM: OMAP3/OMAP4: PRM: add prm_features flags and add IO wakeup under itTero Kristo1-0/+2
prm_features flag will contain SoC specific feature enabler flags. Initially IO wakeup is added under this. Helps to get rid of runtime cpu_is_X checks. Signed-off-by: Tero Kristo <t-kristo@ti.com> Signed-off-by: Paul Walmsley <paul@pwsan.com>
2014-05-15ARM: OMAP3/4: PRM: provide io chain reconfig function through irq setupTero Kristo1-6/+1
This helps to make the PRM registration modular, and also gets rid of a cpu type check done later. Signed-off-by: Tero Kristo <t-kristo@ti.com> Signed-off-by: Paul Walmsley <paul@pwsan.com>
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.