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* ARM/gpio: Push OMAP2 quirk down into TWL4030 driverLinus Walleij2023-05-241-1/+0
| | | | | | | | | | | | | | | | The TWL4030 GPIO driver has a custom platform data .set_up() callback to call back into the platform and do misc stuff such as hog and export a GPIO for WLAN PWR on a specific OMAP3 board. Avoid all the kludgery in the platform data and the boardfile and just put the quirks right into the driver. Make it conditional on OMAP3. I think the exported GPIO is used by some kind of userspace so ordinary DTS hogs will probably not work. Fixes: 92bf78b33b0b ("gpio: omap: use dynamic allocation of base") Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* ARM: omap2: make functions staticArnd Bergmann2023-01-091-4/+10
| | | | | | | | | A number of functions are only called from the file they are defined in, so remove the extern declarations and make them local to those files. Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* ARM: omap2: remove unused functionsArnd Bergmann2023-01-091-60/+0
| | | | | | | | These are a number of individual functions that were either never used, or that had their last user removed in a prior cleanup. Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* ARM: OMAP2+: drop hwmod-clock helper commentJohan Hovold2022-04-211-3/+0
| | | | | | | | | | | | | Since commit a4f6cdb0672f ("ARM: OMAP: omap_device: Add omap_device_[alloc|delete] for DT integration"), _add_hwmod_clocks_clkdev() is called from omap_device_alloc(). Drop the outdated comment referring to how this function was used ten odd years ago. Signed-off-by: Johan Hovold <johan@kernel.org> Message-Id: <20220303180014.2639-3-johan@kernel.org> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP2+: drop omap_device_register() helperJohan Hovold2022-04-211-17/+0
| | | | | | | | | The omap_device_register() helper is unused since commit 82f12e64a019 ("ARM: OMAP2+: Drop legacy init for sdma") and can be removed. Signed-off-by: Johan Hovold <johan@kernel.org> Message-Id: <20220303180014.2639-2-johan@kernel.org> Signed-off-by: Tony Lindgren <tony@atomide.com>
* Merge tag 'arm-fixes-5.11-1' of ↵Linus Torvalds2021-01-081-3/+5
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc Pull ARM SoC fixes from Arnd Bergmann: "These are a small number of bug fixes that all came in before or during the merge window, most for the omap platform: - One boot regression fix for Nokia N9 (OMAP3). - Two small defconfig changes for omap2, to reflect changes in drivers - Warning fixes for DT issues on omap2, picoxcell and bitmap SoCs. The picoxcell platform will be removed in v5.12, but fixing it first makes it easier to backport to the fix to stable kernels and get a clean build with new dtc versions" * tag 'arm-fixes-5.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: ARM: picoxcell: fix missing interrupt-parent properties ARM: dts: ux500/golden: Set display max brightness arm64: dts: bitmain: Use generic "ngpios" rather than "snps,nr-gpios" ARM: omap2: pmic-cpcap: fix maximum voltage to be consistent with defaults on xt875 ARM: omap2plus_defconfig: enable SPI GPIO ARM: OMAP2+: omap_device: fix idling of devices during probe ARM: dts: OMAP3: disable AES on N950/N9 ARM: omap2plus_defconfig: drop unused POWER_AVS option
| * ARM: OMAP2+: omap_device: fix idling of devices during probeAndreas Kemnade2020-12-071-3/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On the GTA04A5 od->_driver_status was not set to BUS_NOTIFY_BIND_DRIVER during probe of the second mmc used for wifi. Therefore omap_device_late_idle idled the device during probing causing oopses when accessing the registers. It was not set because od->_state was set to OMAP_DEVICE_STATE_IDLE in the notifier callback. Therefore set od->_driver_status also in that case. This came apparent after commit 21b2cec61c04 ("mmc: Set PROBE_PREFER_ASYNCHRONOUS for drivers that existed in v4.4") causing this oops: omap_hsmmc 480b4000.mmc: omap_device_late_idle: enabled but no driver. Idling 8<--- cut here --- Unhandled fault: external abort on non-linefetch (0x1028) at 0xfa0b402c ... (omap_hsmmc_set_bus_width) from [<c07996bc>] (omap_hsmmc_set_ios+0x11c/0x258) (omap_hsmmc_set_ios) from [<c077b2b0>] (mmc_power_up.part.8+0x3c/0xd0) (mmc_power_up.part.8) from [<c077c14c>] (mmc_start_host+0x88/0x9c) (mmc_start_host) from [<c077d284>] (mmc_add_host+0x58/0x84) (mmc_add_host) from [<c0799190>] (omap_hsmmc_probe+0x5fc/0x8c0) (omap_hsmmc_probe) from [<c0666728>] (platform_drv_probe+0x48/0x98) (platform_drv_probe) from [<c066457c>] (really_probe+0x1dc/0x3b4) Fixes: 04abaf07f6d5 ("ARM: OMAP2+: omap_device: Sync omap_device and pm_runtime after probe defer") Fixes: 21b2cec61c04 ("mmc: Set PROBE_PREFER_ASYNCHRONOUS for drivers that existed in v4.4") Acked-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Andreas Kemnade <andreas@kemnade.info> [tony@atomide.com: left out extra parens, trimmed description stack trace] Signed-off-by: Tony Lindgren <tony@atomide.com>
* | ARM: OMAP2+: Remove redundant assignment to variable retJing Xiangfeng2020-11-191-3/+2
|/ | | | | | | | The variable ret has been initialized with '-ENOMEM'. The assignment in the if branch is redundant. So remove it. Signed-off-by: Jing Xiangfeng <jingxiangfeng@huawei.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* treewide: Use fallthrough pseudo-keywordGustavo A. R. Silva2020-08-231-1/+1
| | | | | | | | | | Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
* ARM: OMAP2+: Drop legacy init for sdmaTony Lindgren2019-12-301-170/+0
| | | | | | | | | | | | | | We can now drop legacy init for sdma as we pass the quirks in auxdata to the dmaengine driver. Cc: Aaro Koskinen <aaro.koskinen@iki.fi> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Peter Ujfalusi <peter.ujfalusi@ti.com> Cc: Russell King <rmk+kernel@armlinux.org.uk> Cc: Vinod Koul <vkoul@kernel.org> Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Tested-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* OMAP2: fixup doc comments in omap_deviceBen Dooks (Codethink)2019-11-111-12/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | The documentation comments in this file are out of date with the code, so fix this to avoid the following warnings: arch/arm/mach-omap2/omap_device.c:133: warning: Function parameter or member 'pdev' not described in 'omap_device_build_from_dt' arch/arm/mach-omap2/omap_device.c:133: warning: Excess function parameter 'pdev_name' description in 'omap_device_build_from_dt' arch/arm/mach-omap2/omap_device.c:133: warning: Excess function parameter 'pdev_id' description in 'omap_device_build_from_dt' arch/arm/mach-omap2/omap_device.c:133: warning: Excess function parameter 'oh' description in 'omap_device_build_from_dt' arch/arm/mach-omap2/omap_device.c:133: warning: Excess function parameter 'pdata' description in 'omap_device_build_from_dt' arch/arm/mach-omap2/omap_device.c:133: warning: Excess function parameter 'pdata_len' description in 'omap_device_build_from_dt' arch/arm/mach-omap2/omap_device.c:309: warning: Function parameter or member 'pdev' not described in 'omap_device_get_context_loss_count' arch/arm/mach-omap2/omap_device.c:309: warning: Excess function parameter 'od' description in 'omap_device_get_context_loss_count' arch/arm/mach-omap2/omap_device.c:335: warning: Function parameter or member 'ohs' not described in 'omap_device_alloc' arch/arm/mach-omap2/omap_device.c:335: warning: Function parameter or member 'oh_cnt' not described in 'omap_device_alloc' arch/arm/mach-omap2/omap_device.c:335: warning: Excess function parameter 'oh' description in 'omap_device_alloc' arch/arm/mach-omap2/omap_device.c:335: warning: Excess function parameter 'pdata' description in 'omap_device_alloc' arch/arm/mach-omap2/omap_device.c:335: warning: Excess function parameter 'pdata_len' description in 'omap_device_alloc' arch/arm/mach-omap2/omap_device.c:659: warning: Function parameter or member 'pdev' not described in 'omap_device_register' arch/arm/mach-omap2/omap_device.c:659: warning: Excess function parameter 'od' description in 'omap_device_register' arch/arm/mach-omap2/omap_device.c:682: warning: Function parameter or member 'pdev' not described in 'omap_device_enable' arch/arm/mach-omap2/omap_device.c:682: warning: Excess function parameter 'od' description in 'omap_device_enable' arch/arm/mach-omap2/omap_device.c:713: warning: Function parameter or member 'pdev' not described in 'omap_device_idle' arch/arm/mach-omap2/omap_device.c:713: warning: Excess function parameter 'od' description in 'omap_device_idle' Signed-off-by: Ben Dooks (Codethink) <ben.dooks@codethink.co.uk> Signed-off-by: Tony Lindgren <tony@atomide.com>
* treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500Thomas Gleixner2019-06-191-6/+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>
* Merge tag 'overflow-v4.18-rc1-part2' of ↵Linus Torvalds2018-06-121-2/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull more overflow updates from Kees Cook: "The rest of the overflow changes for v4.18-rc1. This includes the explicit overflow fixes from Silvio, further struct_size() conversions from Matthew, and a bug fix from Dan. But the bulk of it is the treewide conversions to use either the 2-factor argument allocators (e.g. kmalloc(a * b, ...) into kmalloc_array(a, b, ...) or the array_size() macros (e.g. vmalloc(a * b) into vmalloc(array_size(a, b)). Coccinelle was fighting me on several fronts, so I've done a bunch of manual whitespace updates in the patches as well. Summary: - Error path bug fix for overflow tests (Dan) - Additional struct_size() conversions (Matthew, Kees) - Explicitly reported overflow fixes (Silvio, Kees) - Add missing kvcalloc() function (Kees) - Treewide conversions of allocators to use either 2-factor argument variant when available, or array_size() and array3_size() as needed (Kees)" * tag 'overflow-v4.18-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (26 commits) treewide: Use array_size in f2fs_kvzalloc() treewide: Use array_size() in f2fs_kzalloc() treewide: Use array_size() in f2fs_kmalloc() treewide: Use array_size() in sock_kmalloc() treewide: Use array_size() in kvzalloc_node() treewide: Use array_size() in vzalloc_node() treewide: Use array_size() in vzalloc() treewide: Use array_size() in vmalloc() treewide: devm_kzalloc() -> devm_kcalloc() treewide: devm_kmalloc() -> devm_kmalloc_array() treewide: kvzalloc() -> kvcalloc() treewide: kvmalloc() -> kvmalloc_array() treewide: kzalloc_node() -> kcalloc_node() treewide: kzalloc() -> kcalloc() treewide: kmalloc() -> kmalloc_array() mm: Introduce kvcalloc() video: uvesafb: Fix integer overflow in allocation UBIFS: Fix potential integer overflow in allocation leds: Use struct_size() in allocation Convert intel uncore to struct_size ...
| * treewide: kzalloc() -> kcalloc()Kees Cook2018-06-121-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | ARM: OMAP2+: Only probe SDMA via ti-sysc if configured in dtsTony Lindgren2018-04-301-7/+15
|/ | | | | | | | | | | | | We still have some SDMA probing using omap_device_build() for the arch/arm/plat-omap/dma.c part that the dmaengine driver then uses. So we still need to ensure that omap_device_build() works even if we probe and manage the dmaengine driver via ti-sysc. And we don't want to call dev_pm_domain_set() as otherwise we'd also have omap_device try to manage the hardware in addition to ti-sysc. Cc: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP2+: Enable ti-sysc to use device tree data for smartreflexTony Lindgren2018-02-281-0/+5
| | | | | | | | | | | | | | Let's enable ti-sysc probing of child devices. So far we have only used ti-sysc to probe interconnect target modules to idle them for cases where the SoC does not have any child devices configured for the module, such as smartreflex on dra7. As we have smartreflex driver configured in the device tree for some SoCs, we need to flip things on with a single patch to prevent both omap_device and ti-sysc to probe smartreflex. So let's stop probing smartreflex with omap_device and probe it with ti-sysc by enabling passing the auxdata. Signed-off-by: Tony Lindgren <tony@atomide.com>
* Merge branch 'soc-fixes' into omap-for-v4.15/fixesTony Lindgren2017-11-281-1/+3
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| * ARM: OMAP2+: Missing error code in omap_device_build()Dan Carpenter2017-11-281-1/+3
| | | | | | | | | | | | | | We need to set the error code if omap_device_alloc() fails. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* | ARM: OMAP2+: Fix smatch found issue for omap_deviceTony Lindgren2017-10-301-4/+2
|/ | | | | | | | | | | | | | The patch d85a2d61432a: "ARM: OMAP2+: Populate legacy resources for dma and smartreflex" from Oct 10, 2017, leads to the following Smatch complaint: arch/arm/mach-omap2/omap_device.c:453 omap_device_copy_resources() error: we previously assumed 'oh' could be null (see line 394) Fixes: d85a2d61432a: ("ARM: OMAP2+: Populate legacy resources for dma and smartreflex") Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP2+: omap_device: fix error return code in omap_device_copy_resources()Wei Yongjun2017-10-131-1/+3
| | | | | | | | | | Fix to return error code -EINVAL from the irq_of_parse_and_map() error handling case instead of 0, as done elsewhere in this function. Fixes: d85a2d61432a ("ARM: OMAP2+: Populate legacy resources for dma and smartreflex") Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP2+: Drop omap_hwmod_dma_infoTony Lindgren2017-10-101-154/+1
| | | | | | | | | | | | | We have all of mach-omap2 booting in device tree only mode now, and this data is populated from device tree. Note that once we have removed support for the omap legacy DMA, we can also drop struct omap_dma_dev_attr. 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>
* ARM: OMAP2+: Populate legacy resources for dma and smartreflexTony Lindgren2017-10-101-31/+106
| | | | | | | | | | | | | | | | | | | | | | | | | We can populate the legacy resources needed by dma and smartreflex from device tree in omap_device_build(). There should be no need to do this for other devices, and eventually these two remaining users will be gone too. The legacy dma will be dropped when the remaining users have been converted to use the dmaengine driver, and smartreflex can now become just a regular device driver with a few pdata callbacks. This is needed in order to remove remaining device dma, irq and io resources from the interconnect code. And while at it, let's simplify things by removing otherwise unused omap_device_build_ss() as we will never call it for more than one hwmod. Cc: "Benoît Cousson" <bcousson@baylibre.com> Cc: Lokesh Vutla <lokeshvutla@ti.com> Cc: Nishanth Menon <nm@ti.com> Cc: Paul Walmsley <paul@pwsan.com> Cc: Tero Kristo <t-kristo@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP2+: omap_device: drop broken RPM status update from suspend_noirqJohan Hovold2017-08-101-10/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since commit a8636c89648a ("PM / Runtime: Don't allow to suspend a device with an active child"), which went into 4.10, it is no longer permitted to set RPM_SUSPENDED state for a device with active children (unless power.ignore_children is set). This specifically means that the attempts to do just that from the omap pm-domain suspend_noirq callback have since been failing whenever a child is active, for example: am335x-usb-childs 47400000.usb: runtime PM trying to suspend device but active child Silence this warning by dropping the broken pm_runtime_set_suspended() call from the omap suspend_noirq callback along with the redundant pm_runtime_set_active() in resume_noirq. This effectively reverts commit 3522bf7bfa24 ("ARM: OMAP2+: omap_device: maintain sane runtime pm status around suspend/resume"), which started updating the RPM state after the runtime_suspend callback (!) for active omap devices had been called during system suspend. The rationale was that a later pm_runtime_get_sync() would then fail (even after runtime pm had been disabled) and that this in turn would avoid any external aborts when accessing registers with clocks disabled. (See also commit 6f3c77b040fc ("PM / Runtime: let rpm_resume() succeed if RPM_ACTIVE, even when disabled, v2"). But during the suspend_noirq phase all children would already have been suspended and their drivers would specifically not attempt any further register accesses. And if this was all just a workaround for random device drivers doing cross-tree calls during system suspend, those drivers should be fixed and updated to explicitly model such dependencies using device-links instead (and either way, any such calls have been causing crashes since 4.10). Fixes: 3522bf7bfa24 ("ARM: OMAP2+: omap_device: maintain sane runtime pm status around suspend/resume") Fixes: a8636c89648a ("PM / Runtime: Don't allow to suspend a device with an active child") Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Dave Gerlach <d-gerlach@ti.com> Cc: Kevin Hilman <khilman@baylibre.com> Cc: Nishanth Menon <nm@ti.com> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Tony Lindgren <tony@atomide.com> Cc: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Johan Hovold <johan@kernel.org> Tested-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP2+: Remove unused legacy code for interconnectsTony Lindgren2017-06-081-4/+1
| | | | | | | | | 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>
* ARM: OMAP2+: omap_device: Sync omap_device and pm_runtime after probe deferDave Gerlach2017-04-041-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Starting from commit 5de85b9d57ab ("PM / runtime: Re-init runtime PM states at probe error and driver unbind") pm_runtime core now changes device runtime_status back to after RPM_SUSPENDED after a probe defer. Certain OMAP devices make use of "ti,no-idle-on-init" flag which causes omap_device_enable to be called during the BUS_NOTIFY_ADD_DEVICE event during probe, along with pm_runtime_set_active. This call to pm_runtime_set_active typically will prevent a call to pm_runtime_get in a driver probe function from re-enabling the omap_device. However, in the case of a probe defer that happens before the driver probe function is able to run, such as a missing pinctrl states defer, pm_runtime_reinit will set the device as RPM_SUSPENDED and then once driver probe is actually able to run, pm_runtime_get will see the device as suspended and call through to the omap_device layer, attempting to enable the already enabled omap_device and causing errors like this: omap-gpmc 50000000.gpmc: omap_device: omap_device_enable() called from invalid state 1 omap-gpmc 50000000.gpmc: use pm_runtime_put_sync_suspend() in driver? We can avoid this error by making sure the pm_runtime status of a device matches the omap_device state before a probe attempt. By extending the omap_device bus notifier to act on the BUS_NOTIFY_BIND_DRIVER event we can check if a device is enabled in omap_device but with a pm_runtime status of RPM_SUSPENDED and once again mark the device as RPM_ACTIVE to avoid a second incorrect call to omap_device_enable. Fixes: 5de85b9d57ab ("PM / runtime: Re-init runtime PM states at probe error and driver unbind") Tested-by: Franklin S Cooper Jr. <fcooper@ti.com> Signed-off-by: Dave Gerlach <d-gerlach@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds2016-08-031-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking fixes from David Miller: 1) Fix several cases of missing of_node_put() calls in various networking drivers. From Peter Chen. 2) Don't try to remove unconfigured VLANs in qed driver, from Yuval Mintz. 3) Unbalanced locking in TIPC error handling, from Wei Yongjun. 4) Fix lockups in CPDMA driver, from Grygorii Strashko. 5) More MACSEC refcount et al fixes, from Sabrina Dubroca. 6) Fix MAC address setting in r8169 during runtime suspend, from Chun-Hao Lin. 7) Various printf format specifier fixes, from Heinrich Schuchardt. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (59 commits) qed: Fail driver load in 100g MSI mode. ethernet: ti: davinci_emac: add missing of_node_put after calling of_parse_phandle ethernet: stmicro: stmmac: add missing of_node_put after calling of_parse_phandle ethernet: stmicro: stmmac: dwmac-socfpga: add missing of_node_put after calling of_parse_phandle ethernet: renesas: sh_eth: add missing of_node_put after calling of_parse_phandle ethernet: renesas: ravb_main: add missing of_node_put after calling of_parse_phandle ethernet: marvell: pxa168_eth: add missing of_node_put after calling of_parse_phandle ethernet: marvell: mvpp2: add missing of_node_put after calling of_parse_phandle ethernet: marvell: mvneta: add missing of_node_put after calling of_parse_phandle ethernet: hisilicon: hns: hns_dsaf_main: add missing of_node_put after calling of_parse_phandle ethernet: hisilicon: hns: hns_dsaf_mac: add missing of_node_put after calling of_parse_phandle ethernet: cavium: octeon: add missing of_node_put after calling of_parse_phandle ethernet: aurora: nb8800: add missing of_node_put after calling of_parse_phandle ethernet: arc: emac_main: add missing of_node_put after calling of_parse_phandle ethernet: apm: xgene: add missing of_node_put after calling of_parse_phandle ethernet: altera: add missing of_node_put 8139too: fix system hang when there is a tx timeout event. qed: Fix error return code in qed_resc_alloc() net: qlcnic: avoid superfluous assignement dsa: b53: remove redundant if ...
| * ARM: OMAP2+: omap_device: fix crash on omap_device removalGrygorii Strashko2016-07-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Below call chain causes system crash when OMAP device is removed by calling of_platform_depopulate()/device_del(): device_del() - blocking_notifier_call_chain(&dev->bus->p->bus_notifier, BUS_NOTIFY_DEL_DEVICE, dev); - _omap_device_notifier_call() - omap_device_delete() - od->pdev->archdata.od = NULL; kfree(od->hwmods); kfree(od); - bus_remove_device() - device_release_driver() - __device_release_driver() - pm_runtime_get_sync() - _od_runtime_resume() - omap_hwmod_enable() <- OOPS od's delted already Backtrace: Unable to handle kernel NULL pointer dereference at virtual address 0000000d pgd = eb100000 [0000000d] *pgd=ad6e1831, *pte=00000000, *ppte=00000000 Internal error: Oops: 17 [#1] PREEMPT SMP ARM CPU: 1 PID: 1273 Comm: modprobe Not tainted 4.4.15-rt19-00115-ge4d3cd3-dirty #68 Hardware name: Generic DRA74X (Flattened Device Tree) task: eb1ee800 ti: ec962000 task.ti: ec962000 PC is at omap_device_enable+0x10/0x90 LR is at _od_runtime_resume+0x10/0x24 [...] [<c00299dc>] (omap_device_enable) from [<c0029a6c>] (_od_runtime_resume+0x10/0x24) [<c0029a6c>] (_od_runtime_resume) from [<c04ad404>] (__rpm_callback+0x20/0x34) [<c04ad404>] (__rpm_callback) from [<c04ad438>] (rpm_callback+0x20/0x80) [<c04ad438>] (rpm_callback) from [<c04aee28>] (rpm_resume+0x48c/0x964) [<c04aee28>] (rpm_resume) from [<c04af360>] (__pm_runtime_resume+0x60/0x88) [<c04af360>] (__pm_runtime_resume) from [<c04a4974>] (__device_release_driver+0x30/0x100) [<c04a4974>] (__device_release_driver) from [<c04a4a60>] (device_release_driver+0x1c/0x28) [<c04a4a60>] (device_release_driver) from [<c04a38c0>] (bus_remove_device+0xec/0x144) [<c04a38c0>] (bus_remove_device) from [<c04a0764>] (device_del+0x10c/0x210) [<c04a0764>] (device_del) from [<c04a67b0>] (platform_device_del+0x18/0x84) [<c04a67b0>] (platform_device_del) from [<c04a6828>] (platform_device_unregister+0xc/0x20) [<c04a6828>] (platform_device_unregister) from [<c05adcfc>] (of_platform_device_destroy+0x8c/0x90) [<c05adcfc>] (of_platform_device_destroy) from [<c04a02f0>] (device_for_each_child+0x4c/0x78) [<c04a02f0>] (device_for_each_child) from [<c05adc5c>] (of_platform_depopulate+0x30/0x44) [<c05adc5c>] (of_platform_depopulate) from [<bf123920>] (cpsw_remove+0x68/0xf4 [ti_cpsw]) [<bf123920>] (cpsw_remove [ti_cpsw]) from [<c04a68d8>] (platform_drv_remove+0x24/0x3c) [<c04a68d8>] (platform_drv_remove) from [<c04a49c8>] (__device_release_driver+0x84/0x100) [<c04a49c8>] (__device_release_driver) from [<c04a4b20>] (driver_detach+0xac/0xb0) [<c04a4b20>] (driver_detach) from [<c04a3be8>] (bus_remove_driver+0x60/0xd4) [<c04a3be8>] (bus_remove_driver) from [<c00d9870>] (SyS_delete_module+0x184/0x20c) [<c00d9870>] (SyS_delete_module) from [<c0010540>] (ret_fast_syscall+0x0/0x1c) Code: e3500000 e92d4070 1590630c 01a06000 (e5d6300d) Hence, fix it by using BUS_NOTIFY_REMOVED_DEVICE event for OMAP device deletion which is sent when DD has finished processing of device deletion. Cc: Tony Lindgren <tony@atomide.com> Cc: Tero Kristo <t-kristo@ti.com> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | ARM: OMAP2+: omap_device: create clock alias purely from DT dataTero Kristo2016-07-031-1/+16
| | | | | | | | | | | | | | | | This avoids the need to add most of the clock aliases under drivers/clk/ti/clk-xyz.c files. Signed-off-by: Tero Kristo <t-kristo@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* | ARM: OMAP2+: Fix typo in omap_device.cAndrea Gelmini2016-06-101-1/+1
|/ | | | | Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP2+: Fix omap_device for module reload on PM runtime forbidTony Lindgren2016-02-121-0/+10
| | | | | | | | | | | | | | | | | | | | | | | If a driver PM runtime is disabled via sysfs, and the module is unloaded, PM runtime can't do anything to disable the device. Let's let the interconnect disable the device on BUS_NOTIFY_UNBOUND_DRIVER. Otherwise omap_device will produce and error on the following module reload. This can be easily tested with something like: # modprobe omap_hsmmc # echo on > /sys/devices/platform/68000000.ocp/4809c000.mmc/power/control # rmmod omap_hsmmc # modprobe omap_hsmmc Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Nishanth Menon <nm@ti.com> Cc: Rafael J. Wysocki <rafael@kernel.org> Cc: Tero Kristo <t-kristo@ti.com> Reported-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Kevin Hilman <khilman@baylibre.com> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP2+: Improve omap_device error for driver writersTony Lindgren2016-02-121-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Drivers using pm_runtime_use_autosuspend() may not get disabled after -EPROBE_DEFER. On the following device driver probe, hardware state is different from the PM runtime state causing omap_device to produce the following error: omap_device_enable() called from invalid state 1 And with omap_device and omap hardware being picky for PM, this will block any deeper idle states in hardware. Let's add a proper error message so driver writers can easily fix their drivers for PM. In general, the solution is to fix the drivers to follow the PM runtime documentation: 1. For sections of code that needs the device disabled, use pm_runtime_put_sync_suspend() if pm_runtime_set_autosuspend() has been set. 2. For driver exit code, use pm_runtime_dont_use_autosuspend() before pm_runtime_put_sync() if pm_runtime_use_autosuspend() has been set. Let's not return with 0 from _od_runtime_resume() as that will eventually lead into new drivers with broken PM runtime that will block deeper idle states on omaps. Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Nishanth Menon <nm@ti.com> Cc: Rafael J. Wysocki <rafael@kernel.org> Cc: Tero Kristo <t-kristo@ti.com> Acked-by: Kevin Hilman <khilman@baylibre.com> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Tony Lindgren <tony@atomide.com>
* Merge tag 'pm+acpi-4.5-rc1-2' of ↵Linus Torvalds2016-01-201-3/+4
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull more power management and ACPI updates from Rafael Wysocki: "This includes fixes on top of the previous batch of PM+ACPI updates and some new material as well. From the new material perspective the most significant are the driver core changes that should allow USB devices to stay suspended over system suspend/resume cycles if they have been runtime-suspended already beforehand. Apart from that, ACPICA is updated to upstream revision 20160108 (cosmetic mostly, but including one fixup on top of the previous ACPICA update) and there are some devfreq updates the didn't make it before (due to timing). A few recent regressions are fixed, most importantly in the cpuidle menu governor and in the ACPI backlight driver and some x86 platform drivers depending on it. Some more bugs are fixed and cleanups are made on top of that. Specifics: - Modify the driver core and the USB subsystem to allow USB devices to stay suspended over system suspend/resume cycles if they have been runtime-suspended already beforehand and fix some bugs on top of these changes (Tomeu Vizoso, Rafael Wysocki). - Update ACPICA to upstream revision 20160108, including updates of the ACPICA's copyright notices, a code fixup resulting from a regression fix that was necessary in the upstream code only (the regression fixed by it has never been present in Linux) and a compiler warning fix (Bob Moore, Lv Zheng). - Fix a recent regression in the cpuidle menu governor that broke it on practically all architectures other than x86 and make a couple of optimizations on top of that fix (Rafael Wysocki). - Clean up the selection of cpuidle governors depending on whether or not the kernel is configured for tickless systems (Jean Delvare). - Revert a recent commit that introduced a regression in the ACPI backlight driver, address the problem it attempted to fix in a different way and revert one more cosmetic change depending on the problematic commit (Hans de Goede). - Add two more ACPI backlight quirks (Hans de Goede). - Fix a few minor problems in the core devfreq code, clean it up a bit and update the MAINTAINERS information related to it (Chanwoo Choi, MyungJoo Ham). - Improve an error message in the ACPI fan driver (Andy Lutomirski). - Fix a recent build regression in the cpupower tool (Shreyas Prabhu)" * tag 'pm+acpi-4.5-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (32 commits) cpuidle: menu: Avoid pointless checks in menu_select() sched / idle: Drop default_idle_call() fallback from call_cpuidle() cpupower: Fix build error in cpufreq-info cpuidle: Don't enable all governors by default cpuidle: Default to ladder governor on ticking systems time: nohz: Expose tick_nohz_enabled ACPICA: Update version to 20160108 ACPICA: Silence a -Wbad-function-cast warning when acpi_uintptr_t is 'uintptr_t' ACPICA: Additional 2016 copyright changes ACPICA: Reduce regression fix divergence from upstream ACPICA ACPI / video: Add disable_backlight_sysfs_if quirk for the Toshiba Satellite R830 ACPI / video: Revert "thinkpad_acpi: Use acpi_video_handles_brightness_key_presses()" ACPI / video: Document acpi_video_handles_brightness_key_presses() a bit ACPI / video: Fix using an uninitialized mutex / list_head in acpi_video_handles_brightness_key_presses() ACPI / video: Revert "ACPI / video: driver must be registered before checking for keypresses" ACPI / fan: Improve acpi_device_update_power error message ACPI / video: Add disable_backlight_sysfs_if quirk for the Toshiba Portege R700 cpuidle: menu: Fix menu_select() for CPUIDLE_DRIVER_STATE_START == 0 MAINTAINERS: Add devfreq-event entry MAINTAINERS: Add missing git repository and directory for devfreq ...
| * PM / Domains: add setter for dev.pm_domainTomeu Vizoso2016-01-081-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adds a function that sets the pointer to dev_pm_domain in struct device and that warns if the device has already finished probing. The reason why we want to enforce that is because in the general case that can cause problems and also that we can simplify code quite a bit if we can always assume that. This patch also changes all current code that directly sets the dev.pm_domain pointer. Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | ARM: OMAP2+: Change core_initcall levels to postcore_initcallTony Lindgren2015-12-031-1/+1
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We want to be able to probe a few selected device drivers before hwmod code populates the clocks in omap_hwmod_setup_all(). This allows us to convert most of the clock drivers into regular device drivers. We only need a few minimal clock drivers early for the system timers to select between the 32KiHz clock and the high frequency oscillator. With these changes, initializing the clock drivers can be just done at core_initcall time with something like: np = of_find_node_by_name(NULL, "plls"); if (np) of_platform_populate(np, NULL, NULL, NULL); And then these clocks will be available for the interconnect code to use. Having most of the clock drivers being regular device drivers allows us to use the nice things like devm_* functions and dev_err and dev_dbg. As an extra bonus, this also allows us to develop the clock drivers for new SoCs as loadable modules initially for cases where we can boot up the system based on the bootloader configured clocks. To do this, let's change the core_initcalls to postcore_initcall under mach-omap2. Cc: Felipe Balbi <balbi@ti.com> Cc: Grygorii Strashko <grygorii.strashko@ti.com> Cc: Paul Walmsley <paul@pwsan.com> Cc: Tero Kristo <t-kristo@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP2+: omap-device: fix race deferred probe of omap_hsmmc vs ↵Grygorii Strashko2015-09-011-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | omap_device_late_init Kernel fails to boot 50% of times (form build to build) with RT-patchset applied due to the following race - on late boot stages deferred_probe_work_func->omap_hsmmc_probe races with omap_device_late_ini. The same issue has been reported now on linux-next (4.3) by Keerthy [1] late_initcall - deferred_probe_initcal() tries to re-probe all pending driver's probe. - later on, some driver is probing in this case It's cpsw.c (but could be any other drivers) cpsw_init - platform_driver_register - really_probe - driver_bound - driver_deferred_probe_trigger and boot proceed. So, at this moment we have deferred_probe_work_func scheduled. late_initcall_sync - omap_device_late_init - omap_device_idle CPU1 CPU2 - deferred_probe_work_func - really_probe - omap_hsmmc_probe - pm_runtime_get_sync late_initcall_sync - omap_device_late_init if (od->_driver_status != BUS_NOTIFY_BOUND_DRIVER) { if (od->_state == OMAP_DEVICE_STATE_ENABLED) { - omap_device_idle [ops - IP is disabled] - [fail] - pm_runtime_put_sync - omap_hsmmc_runtime_suspend [ooops!] == log == omap_hsmmc 480b4000.mmc: unable to get vmmc regulator -517 davinci_mdio 48485000.mdio: davinci mdio revision 1.6 davinci_mdio 48485000.mdio: detected phy mask fffffff3 libphy: 48485000.mdio: probed davinci_mdio 48485000.mdio: phy[2]: device 48485000.mdio:02, driver unknown davinci_mdio 48485000.mdio: phy[3]: device 48485000.mdio:03, driver unknown omap_hsmmc 480b4000.mmc: unable to get vmmc regulator -517 cpsw 48484000.ethernet: Detected MACID = b4:99:4c:c7:d2:48 cpsw 48484000.ethernet: cpsw: Detected MACID = b4:99:4c:c7:d2:49 hctosys: unable to open rtc device (rtc0) omap_hsmmc 480b4000.mmc: omap_device_late_idle: enabled but no driver. Idling ldousb: disabling Unhandled fault: imprecise external abort (0x1406) at 0x00000000 [00000000] *pgd=00000000 Internal error: : 1406 [#1] PREEMPT SMP ARM Modules linked in: CPU: 1 PID: 58 Comm: kworker/u4:1 Not tainted 4.1.2-rt1-00467-g6da3c0a-dirty #5 Hardware name: Generic DRA74X (Flattened Device Tree) Workqueue: deferwq deferred_probe_work_func task: ee6ddb00 ti: edd3c000 task.ti: edd3c000 PC is at omap_hsmmc_runtime_suspend+0x1c/0x12c LR is at _od_runtime_suspend+0xc/0x24 pc : [<c0471998>] lr : [<c0029590>] psr: a0000013 sp : edd3dda0 ip : ee6ddb00 fp : c07be540 r10: 00000000 r9 : c07be540 r8 : 00000008 r7 : 00000000 r6 : ee646c10 r5 : ee646c10 r4 : edd79380 r3 : fa0b4100 r2 : 00000000 r1 : 00000000 r0 : ee646c10 Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel Control: 10c5387d Table: 8000406a DAC: 00000015 Process kworker/u4:1 (pid: 58, stack limit = 0xedd3c218) Stack: (0xedd3dda0 to 0xedd3e000) dda0: ee646c70 ee646c10 c0029584 00000000 00000008 c0029590 ee646c70 ee646c10 ddc0: c0029584 c03adfb8 ee646c10 00000004 0000000c c03adff0 ee646c10 00000004 dde0: 0000000c c03ae4ec 00000000 edd3c000 ee646c10 00000004 ee646c70 00000004 de00: fa0b4000 c03aec20 ee6ddb00 ee646c10 00000004 ee646c70 ee646c10 fffffdfb de20: edd79380 00000000 fa0b4000 c03aee90 fffffdfb edd79000 ee646c00 c0474290 de40: 00000000 edda24c0 edd79380 edc81f00 00000000 00000200 00000001 c06dd488 de60: edda3960 ee646c10 ee646c10 c0824cc4 fffffdfb c0880c94 00000002 edc92600 de80: c0836378 c03a7f84 ee646c10 c0824cc4 00000000 c0880c80 c0880c94 c03a6568 dea0: 00000000 ee646c10 c03a66ac ee4f8000 00000000 00000001 edc92600 c03a4b40 dec0: ee404c94 edc83c4c ee646c10 ee646c10 ee646c44 c03a63c4 ee646c10 ee646c10 dee0: c0814448 c03a5aa8 ee646c10 c0814220 edd3c000 c03a5ec0 c0814250 ee6be400 df00: edd3c000 c004e5bc ee6ddb01 00000078 ee6ddb00 ee4f8000 ee6be418 edd3c000 df20: ee4f8028 00000088 c0836045 ee4f8000 ee6be400 c004e928 ee4f8028 00000000 df40: c004e8ec 00000000 ee6bf1c0 ee6be400 c004e8ec 00000000 00000000 00000000 df60: 00000000 c0053450 2e56fa97 00000000 afdffbd7 ee6be400 00000000 00000000 df80: edd3df80 edd3df80 00000000 00000000 edd3df90 edd3df90 edd3dfac ee6bf1c0 dfa0: c0053384 00000000 00000000 c000f668 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 f1fc9d7e febfbdff [<c0471998>] (omap_hsmmc_runtime_suspend) from [<c0029590>] (_od_runtime_suspend+0xc/0x24) [<c0029590>] (_od_runtime_suspend) from [<c03adfb8>] (__rpm_callback+0x24/0x3c) [<c03adfb8>] (__rpm_callback) from [<c03adff0>] (rpm_callback+0x20/0x80) [<c03adff0>] (rpm_callback) from [<c03ae4ec>] (rpm_suspend+0xe4/0x618) [<c03ae4ec>] (rpm_suspend) from [<c03aee90>] (__pm_runtime_idle+0x60/0x80) [<c03aee90>] (__pm_runtime_idle) from [<c0474290>] (omap_hsmmc_probe+0x6bc/0xa7c) [<c0474290>] (omap_hsmmc_probe) from [<c03a7f84>] (platform_drv_probe+0x44/0xa4) [<c03a7f84>] (platform_drv_probe) from [<c03a6568>] (driver_probe_device+0x170/0x2b4) [<c03a6568>] (driver_probe_device) from [<c03a4b40>] (bus_for_each_drv+0x64/0x98) [<c03a4b40>] (bus_for_each_drv) from [<c03a63c4>] (device_attach+0x70/0x88) [<c03a63c4>] (device_attach) from [<c03a5aa8>] (bus_probe_device+0x84/0xac) [<c03a5aa8>] (bus_probe_device) from [<c03a5ec0>] (deferred_probe_work_func+0x58/0x88) [<c03a5ec0>] (deferred_probe_work_func) from [<c004e5bc>] (process_one_work+0x134/0x464) [<c004e5bc>] (process_one_work) from [<c004e928>] (worker_thread+0x3c/0x4fc) [<c004e928>] (worker_thread) from [<c0053450>] (kthread+0xcc/0xe4) [<c0053450>] (kthread) from [<c000f668>] (ret_from_fork+0x14/0x2c) Code: e594302c e593202c e584205c e594302c (e5932128) ---[ end trace 0000000000000002 ]--- The issue happens because omap_device_late_init() do not take into account that some drivers are present, but their probes were not finished successfully and where deferred instead. This is the valid case, and omap_device_late_init() should not idle such devices. To fix this issue, the value of omap_device->_driver_status field should be checked not only for BUS_NOTIFY_BOUND_DRIVER (driver is present and has been bound to device successfully), but also checked for BUS_NOTIFY_BIND_DRIVER (driver about to be bound) - which means driver is present and there was try to bind it to device. [1] http://www.spinics.net/lists/arm-kernel/msg441880.html Cc: Tero Kristo <t-kristo@ti.com> Cc: Keerthy <j-keerthy@ti.com> Tested-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* Merge tag 'armsoc-soc' of ↵Linus Torvalds2015-06-261-13/+17
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC platform support updates from Kevin Hilman: "Our SoC branch usually contains expanded support for new SoCs and other core platform code. Some highlights from this round: - sunxi: SMP support for A23 SoC - socpga: big-endian support - pxa: conversion to common clock framework - bcm: SMP support for BCM63138 - imx: support new I.MX7D SoC - zte: basic support for ZX296702 SoC" * tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (134 commits) ARM: zx: Add basic defconfig support for ZX296702 ARM: dts: zx: add an initial zx296702 dts and doc clk: zx: add clock support to zx296702 dt-bindings: Add #defines for ZTE ZX296702 clocks ARM: socfpga: fix build error due to secondary_startup MAINTAINERS: ARM64: EXYNOS: Extend entry for ARM64 DTS ARM: ep93xx: simone: support for SPI-based MMC/SD cards MAINTAINERS: update Shawn's email to use kernel.org one ARM: socfpga: support suspend to ram ARM: socfpga: add CPU_METHOD_OF_DECLARE for Arria 10 ARM: socfpga: use CPU_METHOD_OF_DECLARE for socfpga_cyclone5 ARM: EXYNOS: register power domain driver from core_initcall ARM: EXYNOS: use PS_HOLD based poweroff for all supported SoCs ARM: SAMSUNG: Constify platform_device_id ARM: EXYNOS: Constify irq_domain_ops ARM: EXYNOS: add coupled cpuidle support for Exynos3250 ARM: EXYNOS: add exynos_get_boot_addr() helper ARM: EXYNOS: add exynos_set_boot_addr() helper ARM: EXYNOS: make exynos_core_restart() less verbose ARM: EXYNOS: fix exynos_boot_secondary() return value on timeout ...
| * ARM: OMAP2+: Return correct error values from device and hwmodPali Rohár2015-06-011-13/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | Without this patch function pm_runtime_get_sync() returns 0 even when some omap subfunction fails. This patch properly propagate error codes from omap functions back to caller. This patch fix problem, when loading omap-aes driver in qemu cause kernel oops. Signed-off-by: Pali Rohár <pali.rohar@gmail.com> [paul@pwsan.com: fix a checkpatch warning] Signed-off-by: Paul Walmsley <paul@pwsan.com>
* | Merge branch 'for-linus-clk' of git://ftp.arm.linux.org.uk/~rmk/linux-armLinus Torvalds2015-06-231-15/+9
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull clkdev updates from Russell King: "This series addresses some breakage in clkdev caused by a previous patch set from the clk tree which introduced per-user clk structures. This basically renamed the existing 'struct clk' to 'struct clk_hw', and introduced a new 'struct clk'. This change will break anyone using clk_add_alias() with the common clk code enabled. Thankfully, the intersection of users of clk_add_alias() and those using the common clk code is practically zero, but this is something which should be fixed to keep the code sane. The problem is that clk_add_alias() does this: r = clk_get(...); l = clkdev_alloc(r, ...); clk_put(...); which causes the alias to store a pointer to 'r', which has been freed. The original patch set tried to work around this problem incorrectly - at clk_get() time, it tried to convert the struct clk to a struct clk_hw, and then creating a new struct clk from that. Clearly, if the original struct clk has been freed, then we have a use-after-free bug. We have other places in the tree which do something similar, so this series also addresses those locations too. This series addresses this problem by converting clkdev to store and use the clk_hw pointer. This allows clk_get() to only have to create it's per-user struct clk from the clk_hw. We can also get to the desired clk_hw at clk_add_alias() or clk lookup creation time, when the struct clk is "alive". We also perform some cleanups of the code: - replacing looped calls to clkdev_add() with clkdev_add_table() - replacing open-coded lookup allocation (which should have been using clkdev_alloc()) and subsequent clkdev_add() with clkdev_create() - replacing open-coded clk_add_alias() with clk_add_alias()" * 'for-linus-clk' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: clk: s2mps11: use clkdev_create() ASoC: migor: use clkdev_create() ARM: omap2: use clkdev_add_alias() ARM: omap2: use clkdev_create() ARM: orion: use clkdev_create() ARM: lpc32xx: convert to use clkdev_add_table() SH: use clkdev_add_table() clkdev: add clkdev_create() helper clkdev: const-ify connection id to clk_add_alias() clkdev: get rid of redundant clk_add_alias() prototype in linux/clk.h clkdev: drop __init from clkdev_add_table() clk: update clk API documentation to clarify clk_round_rate() clkdev: use clk_hw internally
| * | ARM: omap2: use clkdev_add_alias()Russell King2015-05-061-15/+9
| |/ | | | | | | | | | | | | | | When creating aliases of existing clkdev clocks, use clkdev_add_alias() isntead of open coding the lookup and clk_lookup creation. Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* / ARM: omap-device: use SET_NOIRQ_SYSTEM_SLEEP_PM_OPSGrygorii Strashko2015-05-121-5/+2
|/ | | | | | | | | | | | | Use recently introduced macro SET_NOIRQ_SYSTEM_SLEEP_PM_OPS to set up PM callbacks. This also fixes missed assignment of .poweroff_noirq() callback. Signed-off-by: Grygorii Strashko <Grygorii.Strashko@linaro.org> Acked-by: Santosh Shilimkar <ssantosh@kernel.org> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Pavel Machek <pavel@ucw.cz> Reviewed-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ARM: omap-device: add missed callback for suspend-to-diskGrygorii Strashko2015-03-161-0/+3
| | | | | | | | Add missed callback needed for supporting suspend-to-disk (hibernation) mode. Signed-off-by: Grygorii Strashko <Grygorii.Strashko@linaro.org> Acked-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PMRafael J. Wysocki2014-12-131-1/+1
| | | | | | | | | | | | | | | After commit b2b49ccbdd54 (PM: Kconfig: Set PM_RUNTIME if PM_SLEEP is selected) PM_RUNTIME is always set if PM is set, so #ifdef blocks depending on CONFIG_PM_RUNTIME may now be changed to depend on CONFIG_PM. Replace CONFIG_PM_RUNTIME with CONFIG_PM everywhere in the code under arch/arm/ (the defconfig files will be modified later). Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Nishanth Menon <nm@ti.com> Acked-by: Sekhar Nori <nsekhar@ti.com> Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
* ARM: OMAP2+: Warn about deprecated legacy booting modeTony Lindgren2014-10-291-0/+4
| | | | | | | | | | | | | | | | | | | | We're moving omaps to use device tree based booting and already have omap2, omap4, omap5, am335x and am437x booting in device tree only mode. Only omap3 still has legacy booting still around and we really want to make that device tree only. So let's add a warning about deprecated legacy booting so we get people to upgrade their boards to use device tree based booting and find out about any remaining issues. Note that for most boards we already have the .dts file and those can be booted with without changing the bootloader using the appended DTB mode. Acked-By: Sebastian Reichel <sre@kernel.org> Reviewed-by: Aaro Koskinen <aaro.koskinen@iki.fi> Reviewed-by: Javier Martinez Canillas <javier@dowhile0.org> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP2+: omap_device: remove warning that clk alias already existsMarkus Pargmann2014-08-251-1/+1
| | | | | | | | | | | | | | | | | | | | When an alias for a clock already exists the warning is printed. For every module with a main_clk defined, a clk alias for fck is added. There are some components that have the same main_clk defined, so this is a really normal situation. For example the am33xx edma device has 4 components using the same main clock. So there are three warnings in the boot log for this already existing clock alias: platform 49000000.edma: alias fck already exists platform 49000000.edma: alias fck already exists platform 49000000.edma: alias fck already exists As this is only interesting for developers, this patch changes the message to a debug message. Signed-off-by: Markus Pargmann <mpa@pengutronix.de> Signed-off-by: Tony Lindgren <tony@atomide.com>
* Merge tag 'v3.13-rc5' into next/boardsOlof Johansson2013-12-281-0/+24
|\ | | | | | | | | | | | | Need a newer base version to get a regulator fix for Samsung platforms that they enable building in a defconfig. Linux 3.13-rc5
| * ARM: OMAP2+: omap_device: add fail hook for runtime_pm when bad data is detectedNishanth Menon2013-12-101-0/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Due to the cross dependencies between hwmod for automanaged device information for OMAP and dts node definitions, we can run into scenarios where the dts node is defined, however it's hwmod entry is yet to be added. In these cases: a) omap_device does not register a pm_domain (since it cannot find hwmod entry). b) driver does not know about (a), does a pm_runtime_get_sync which never fails c) It then tries to do some operation on the device (such as read the revision register (as part of probe) without clock or adequate OMAP generic PM operation performed for enabling the module. This causes a crash such as that reported in: https://bugzilla.kernel.org/show_bug.cgi?id=66441 When 'ti,hwmod' is provided in dt node, it is expected that the device will not function without the OMAP's power automanagement. Hence, when we hit a fail condition (due to hwmod entries not present or other similar scenario), fail at pm_domain level due to lack of data, provide enough information for it to be fixed, however, it allows for the driver to take appropriate measures to prevent crash. Reported-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de> Signed-off-by: Nishanth Menon <nm@ti.com> Acked-by: Kevin Hilman <khilman@linaro.org> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Kevin Hilman <khilman@linaro.org>
* | ARM: OMAP2+: Add support for legacy auxdata for twlTony Lindgren2013-12-081-0/+2
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | As we currently need to support a mix of legacy platform data and device tree intialized data, let's make sure things keep working for the TWL GPIOs. Mostly the issue is caused by the fact that DSS does not yet have device tree bindings, so we need to rely on the TWL GPIO callback for setting up things like LCD backlight for some boards. As of_platform_populate() for the TWL GPIO is called by twl-core after the I2C bus has been initialized, we cannot pass the auxdata table from the board init code to twl-core like we used to with just legacy platform data. So let's use the omap_device bus hook to patch in the platform data for TWL GPIO until we have sorted out the issues with the TWL GPIOs and device tree bindings. The other option was be to initialize twl core using legacy platform data, which seems like a step backwards as we're moving to device tree only initialization. And we really don't want to add custom configuration functions to the TWL GPIO driver either for this. Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP2+: omap_device: maintain sane runtime pm status around suspend/resumeNishanth Menon2013-11-151-2/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | OMAP device hooks around suspend|resume_noirq ensures that hwmod devices are forced to idle using omap_device_idle/enable as part of the last stage of suspend activity. For a device such as i2c who uses autosuspend, it is possible to enter the suspend path with dev->power.runtime_status = RPM_ACTIVE. As part of the suspend flow, the generic runtime logic would increment it's dev->power.disable_depth to 1. This should prevent further pm_runtime_get_sync from succeeding once the runtime_status has been set to RPM_SUSPENDED. Now, as part of the suspend_noirq handler in omap_device, we force the following: if the device status is !suspended, we force the device to idle using omap_device_idle (clocks are cut etc..). This ensures that from a hardware perspective, the device is "suspended". However, runtime_status is left to be active. *if* an operation is attempted after this point to pm_runtime_get_sync, runtime framework depends on runtime_status to indicate accurately the device status, and since it sees it to be ACTIVE, it assumes the module is functional and returns a non-error value. As a result the user will see pm_runtime_get succeed, however a register access will crash due to the lack of clocks. To prevent this from happening, we should ensure that runtime_status exactly indicates the device status. As a result of this change any further calls to pm_runtime_get* would return -EACCES (since disable_depth is 1). On resume, we restore the clocks and runtime status exactly as we suspended with. These operations are not expected to fail as we update the states after the core runtime framework has suspended itself and restore before the core runtime framework has resumed. Cc: stable@vger.kernel.org # v3.4+ Reported-by: J Keerthy <j-keerthy@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com> Acked-by: Rajendra Nayak <rnayak@ti.com> Acked-by: Kevin Hilman <khilman@linaro.org> Reviewed-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP: fix return value check in omap_device_build_from_dt()Wei Yongjun2013-09-181-1/+1
| | | | | | | | | | In case of error, the function omap_device_alloc() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Acked-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP2+: Sync hwmod state with the pm_runtime and omap_device stateRajendra Nayak2013-07-301-0/+8
| | | | | | | | | | | | Some hwmods which are marked with HWMOD_INIT_NO_IDLE are left in enabled state post setup(). When a omap_device gets created for such hwmods make sure the omap_device and pm_runtime states are also in sync for such hwmods by doing a omap_device_enable() and pm_runtime_set_active() for the device. Signed-off-by: Rajendra Nayak <rnayak@ti.com> Tested-by: Mark Jackson <mpfj-list@newflow.co.uk> Signed-off-by: Paul Walmsley <paul@pwsan.com>