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* Merge tag 'armsoc-drivers' of ↵Linus Torvalds2016-12-1616-325/+133
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC driver updates from Arnd Bergmann: "Driver updates for ARM SoCs, including a couple of newly added drivers: - A new driver for the power management controller on TI Keystone - Support for the prerelease "SCPI" firmware protocol that ended up being shipped by Amlogic in their GXBB SoC. - A soc_device can now be matched using a glob from inside the kernel, when another driver wants to know the specific chip it is running on and cannot find out from DT, firmware or hardware. - Renesas SoCs now support identification through the soc_device interface, both in user space and kernel. - Renesas r8a7743 and r8a7745 gain support for their system controller - A new checking module for the ARM "PSCI" (not to be confused with "SCPI" mentioned above) firmware interface. - A new driver for the Tegra GMI memory interface - Support for the Tegra firmware interfaces with their power management controllers As usual, the updates for the reset controller framework are merged here, as they tend to touch multiple SoCs as well, including a new driver for the Oxford (now Broadcom) OX820 chip and the Tegra bpmp interface. The existing drivers for Atmel, Qualcomm, NVIDIA, TI Davinci, and Rockchips SoCs see some further updates" * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (76 commits) misc: sram: remove useless #ifdef drivers: psci: Allow PSCI node to be disabled drivers: psci: PSCI checker module soc: renesas: Identify SoC and register with the SoC bus firmware: qcom: scm: Return PTR_ERR when devm_clk_get fails firmware: qcom: scm: Remove core, iface and bus clocks dependency dt-bindings: firmware: scm: Add MSM8996 DT bindings memory: da8xx-ddrctl: drop the call to of_flat_dt_get_machine_name() bus: da8xx-mstpri: drop the call to of_flat_dt_get_machine_name() ARM: shmobile: Document DT bindings for Product Register soc: renesas: rcar-sysc: add R8A7745 support reset: Add Tegra BPMP reset driver dt-bindings: firmware: Allow child nodes inside the Tegra BPMP dt-bindings: Add power domains to Tegra BPMP firmware firmware: tegra: Add BPMP support firmware: tegra: Add IVC library dt-bindings: firmware: Add bindings for Tegra BPMP mailbox: tegra-hsp: Use after free in tegra_hsp_remove_doorbells() mailbox: Add Tegra HSP driver firmware: arm_scpi: add support for pre-v1.0 SCPI compatible ...
| * Merge tag 'tegra-for-4.10-reset' of ↵Olof Johansson2016-11-195-0/+76
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/drivers reset: Add Tegra BPMP reset driver This contains a patch which implements a reset driver using the services provided by the BPMP firmware (via the MRQ_RESET request). * tag 'tegra-for-4.10-reset' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux: reset: Add Tegra BPMP reset driver Signed-off-by: Olof Johansson <olof@lixom.net>
| | * reset: Add Tegra BPMP reset driverThierry Reding2016-11-185-0/+76
| | | | | | | | | | | | | | | | | | | | | | | | This driver uses the services provided by the BPMP firmware driver to implement a reset driver based on the MRQ_RESET request. Acked-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Thierry Reding <treding@nvidia.com>
| * | reset: allow using reset_control_reset with shared resetMartin Blumenstingl2016-11-141-6/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some SoCs (for example Amlogic GXBB) implement a reset controller which only supports a reset pulse (triggered via reset_control_reset). At the same time multiple devices (in case of the Amlogic GXBB SoC both USB PHYs) are sharing the same reset line. This patch allows using reset_control_reset also for shared resets. There are limitations though: reset_control_reset can only be used if reset_control_assert was not used yet. reset_control_assert can only be used if reset_control_reset was not used yet. For shared resets the reset is only triggered once for the lifetime of the reset_control instance (the reset can be triggered again if all consumers of that specific reset_control are gone, as the reset framework will free the reset_control instance in that case). Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
| * | reset: lpc18xx: make it explicitly non-modularPaul Gortmaker2016-10-241-27/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Kconfig currently controlling compilation of this code is: drivers/reset/Kconfig:config RESET_LPC18XX drivers/reset/Kconfig: bool "LPC18xx/43xx Reset Driver" if COMPILE_TEST drivers/reset/Kconfig: default ARCH_LPC18XX or arch/arm/Kconfig:config ARCH_LPC18XX arch/arm/Kconfig: bool "NXP LPC18xx/LPC43xx" ...meaning that it currently is not being built as a module by anyone. Lets remove the modular code that is essentially orphaned, so that when reading the driver there is no doubt it is builtin-only. We explicitly disallow a driver unbind, since that doesn't have a sensible use case anyway, and it allows us to drop the ".remove" code for non-modular drivers. Since module_platform_driver() uses the same init level priority as builtin_platform_driver() the init ordering remains unchanged with this commit. Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code. We also delete the MODULE_LICENSE tag etc. since all that information is already contained at the top of the file in the comments. Cc: Joachim Eastwood <manabian@gmail.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
| * | reset: zynq: make it explicitly non-modularPaul Gortmaker2016-10-241-6/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Makefile/Kconfig currently controlling compilation of this code is: drivers/reset/Kconfig:config RESET_ZYNQ drivers/reset/Kconfig: bool "ZYNQ Reset Driver" if COMPILE_TEST drivers/reset/Kconfig: default ARCH_ZYNQ or drivers/reset/Makefile:obj-$(CONFIG_ARCH_ZYNQ) += reset-zynq.o arch/arm/mach-zynq/Kconfig:config ARCH_ZYNQ arch/arm/mach-zynq/Kconfig: bool "Xilinx Zynq ARM Cortex A9 Platform" if ARCH_MULTI_V7 ...meaning that it currently is not being built as a module by anyone. Lets remove the few remaining traces of modular macro usage, so that when reading the driver there is no doubt it is builtin-only. Since module_platform_driver() uses the same init level priority as builtin_platform_driver() the init ordering remains unchanged with this commit. We also delete the MODULE_LICENSE tag etc. since all that information was (or is now) contained at the top of the file in the comments. Cc: "Sören Brinkmann" <soren.brinkmann@xilinx.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Acked-by: Michal Simek <michal.simek@xilinx.com> Acked-by: Moritz Fischer <moritz.fischer@ettus.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
| * | reset: sunxi: make it explicitly non-modularPaul Gortmaker2016-10-241-7/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Kconfig currently controlling compilation of this code is: drivers/reset/Kconfig:config RESET_SUNXI drivers/reset/Kconfig: bool "Allwinner SoCs Reset Driver" if COMPILE_TEST && !ARCH_SUNXI drivers/reset/Kconfig: default ARCH_SUNXI or arch/arm/mach-sunxi/Kconfig:menuconfig ARCH_SUNXI arch/arm/mach-sunxi/Kconfig: bool "Allwinner SoCs" if ARCH_MULTI_V7 ...meaning that it currently is not being built as a module by anyone. Lets remove the few remaining traces of modular macro usage, so that when reading the driver there is no doubt it is builtin-only. Since module_platform_driver() uses the same init level priority as builtin_platform_driver() the init ordering remains unchanged with this commit. Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code. We also delete the MODULE_LICENSE tag etc. since all that information is already contained at the top of the file in the comments. Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
| * | reset: socfpga: make it explicitly non-modularPaul Gortmaker2016-10-241-6/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Kconfig currently controlling compilation of this code is: drivers/reset/Kconfig:config RESET_SOCFPGA drivers/reset/Kconfig: bool "SoCFPGA Reset Driver" if COMPILE_TEST drivers/reset/Kconfig: default ARCH_SOCFPGA or arch/arm/mach-socfpga/Kconfig:menuconfig ARCH_SOCFPGA arch/arm/mach-socfpga/Kconfig: bool "Altera SOCFPGA family" if ARCH_MULTI_V7 ...meaning that it currently is not being built as a module by anyone. Lets remove the small amount of modular evidence that remains, so that when reading the driver there is no doubt it is builtin-only. Since module_platform_driver() uses the same init level priority as builtin_platform_driver() the init ordering remains unchanged with this commit. We also delete the MODULE_LICENSE tag etc. since all that information was (or is now) contained at the top of the file in the comments. Cc: Steffen Trumtrar <s.trumtrar@pengutronix.de> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
| * | reset: berlin: make it explicitly non-modularPaul Gortmaker2016-10-241-8/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Kconfig currently controlling compilation of this code is: drivers/reset/Kconfig:config RESET_BERLIN drivers/reset/Kconfig: bool "Berlin Reset Driver" if COMPILE_TEST drivers/reset/Kconfig: default ARCH_BERLIN or arch/arm/mach-berlin/Kconfig:menuconfig ARCH_BERLIN arch/arm/mach-berlin/Kconfig: bool "Marvell Berlin SoCs" if ARCH_MULTI_V7 or arch/arm64/Kconfig.platforms:config ARCH_BERLIN arch/arm64/Kconfig.platforms: bool "Marvell Berlin SoC Family" ...meaning that it currently is not being built as a module by anyone. Lets remove the modular code that is essentially orphaned, so that when reading the driver there is no doubt it is builtin-only. Since module_platform_driver() uses the same init level priority as builtin_platform_driver() the init ordering remains unchanged with this commit. Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code. We also delete the MODULE_LICENSE tag etc. since all that information was (or is now) contained at the top of the file in the comments. Cc: Antoine Tenart <antoine.tenart@free-electrons.com> Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
| * | reset: oxnas: Add OX820 supportNeil Armstrong2016-10-201-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | In order to support the Oxford Semiconductor OX820 SoC, add a new compatible string. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
| * | reset: sti: Remove STiH415/6 reset supportPeter Griffin2016-10-204-265/+0
| |/ | | | | | | | | | | | | | | | | Support for STiH415/6 SoCs is being removed from the kernel because the platforms are obsolete. This patch removes the reset drivers for these SoC's. Signed-off-by: Peter Griffin <peter.griffin@linaro.org> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* / reset: uniphier: rename MIO reset to SD reset for Pro5, PXs2, LD20 SoCsMasahiro Yamada2016-10-221-8/+8
|/ | | | | | | | | | | | | I made a mistake as for naming for this block. The MIO block is not implemented for these 3 SoCs in the first place. The current naming will be a trouble if an SoC with both MIO and SD-ctrl blocks appear in the future. This driver has just been merged in the previous merge window. Rename it before the release. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: hi6220: allow to compile test driver on other architecturesPhilipp Zabel2016-08-302-2/+3
| | | | | | | | | Also remove the RESET_CONTROLLER dependency, this Kconfig file is included inside the menuconfig already. Cc: Chen Feng <puck.chen@hisilicon.com> Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: zynq: add driver Kconfig optionPhilipp Zabel2016-08-302-1/+7
| | | | | | | | | | | Visible only if COMPILE_TEST is enabled, this allows to include the driver in build tests. Cc: Moritz Fischer <moritz.fischer@ettus.com> Cc: Sören Brinkmann <soren.brinkmann@xilinx.com> Acked-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: sunxi: add driver Kconfig optionPhilipp Zabel2016-08-302-1/+7
| | | | | | | | Visible only if COMPILE_TEST is enabled, this allows to include the driver in build tests. Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: stm32: add driver Kconfig optionPhilipp Zabel2016-08-302-1/+7
| | | | | | | | | | Visible only if COMPILE_TEST is enabled, this allows to include the driver in build tests. Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com> Cc: Gabriel Fernandez <gabriel.fernandez@st.com> Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: socfpga: add driver Kconfig optionPhilipp Zabel2016-08-302-1/+7
| | | | | | | | | Visible only if COMPILE_TEST is enabled, this allows to include the driver in build tests. Acked-by: Dinh Nguyen <dinguyen@opensource.altera.com> Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: pistachio: add driver Kconfig optionPhilipp Zabel2016-08-302-1/+7
| | | | | | | | | | Visible only if COMPILE_TEST is enabled, this allows to include the driver in build tests. Cc: Damien Horsley <Damien.Horsley@imgtec.com> Acked-by: James Hartley <james.hartley@imgtec.com> Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: meson: add driver Kconfig optionPhilipp Zabel2016-08-252-1/+7
| | | | | | | | | Visible only if COMPILE_TEST is enabled, this allows to include the driver in build tests. Acked-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: lpc18xx: add driver Kconfig optionPhilipp Zabel2016-08-252-1/+7
| | | | | | | | | Visible only if COMPILE_TEST is enabled, this allows to include the driver in build tests. Acked-by: Joachim Eastwood <manabian@gmail.com> Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: berlin: add driver Kconfig optionPhilipp Zabel2016-08-252-1/+7
| | | | | | | | | | Visible only if COMPILE_TEST is enabled, this allows to include the driver in build tests. Cc: Antoine Tenart <antoine.tenart@free-electrons.com> Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: ath79: add driver Kconfig optionPhilipp Zabel2016-08-252-1/+8
| | | | | | | | | Visible only if COMPILE_TEST is enabled, this allows to include the driver in build tests. Acked-by: Aban Bedel <albeu@free.fr> Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: ath79: add missing includePhilipp Zabel2016-08-251-0/+1
| | | | | | | The driver uses readl/writel, so it should include linux/io.h. Acked-by: Aban Bedel <albeu@free.fr> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: warn on invalid input to reset_control_reset/assert/deassert/statusPhilipp Zabel2016-08-241-1/+11
| | | | | | | Instead of potentially crashing, dump a backtrace and return -EINVAL if rstc is NULL or an error code. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: uniphier: add reset controller driver for UniPhier SoCsMasahiro Yamada2016-08-243-0/+451
| | | | | | | | This is the initial commit for UniPhier reset controller driver. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* drivers: reset: Add STM32 reset driverMaxime Coquelin2016-08-242-0/+109
| | | | | | | | | | | The STM32 MCUs family IPs can be reset by accessing some registers from the RCC block. The list of available reset lines is documented in the DT bindings. Signed-off-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: socfpga: no need to store modrst_offsetPhilipp Zabel2016-08-081-10/+9
| | | | | | | | Since we can just add it to membase once, there is no need to store modrst_offset separately, and to repeat the addition with every access. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Tested-by: Dinh Nguyen <dinguyen@opensource.altera.com>
* reset: add TI SYSCON based reset driverAndrew F. Davis2016-06-293-0/+248
| | | | | | | | | | | | | Add a reset-controller driver for performing reset management of various devices present on the SoC, with the reset registers shared between devices in a common register memory space. This driver uses the syscon/regmap frameworks to actually implement the various reset functionalities needed by the reset consumer devices. Signed-off-by: Andrew F. Davis <afd@ti.com> [s-anna@ti.com: add documentation, syscon name change] Signed-off-by: Suman Anna <s-anna@ti.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: hisilicon: Add hi6220 media subsystem reset supportXinliang Liu2016-06-291-2/+47
| | | | | | | | | Add hi6220 media subsystem reset controller. Signed-off-by: Chen Feng <puck.chen@hisilicon.com> Signed-off-by: Xia Qing <saberlily.xia@hisilicon.com> Signed-off-by: Xinliang Liu <xinliang.liu@linaro.org> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: hisilicon: Change to syscon register accessChen Feng2016-06-291-40/+45
| | | | | | | | | | | | | | There are two reset controllers in hi6220 SoC: The peripheral reset controller bits are part of sysctrl registers. The media reset controller bits are part of mediactrl registers. So change register access to syscon way. And rename current reset controller to peripheral one. Signed-off-by: Chen Feng <puck.chen@hisilicon.com> Signed-off-by: Xia Qing <saberlily.xia@hisilicon.com> Signed-off-by: Xinliang Liu <xinliang.liu@linaro.org> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: Add support for the Amlogic Meson SoC Reset ControllerNeil Armstrong2016-06-012-0/+137
| | | | | | | | | | This patch adds the platform driver for the Amlogic Meson SoC Reset Controller. The Meson8b and GXBB SoCs are supported. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: oxnas: Use devm register API and get rid of platform removeNeil Armstrong2016-05-301-11/+1
| | | | | | | | Use the brand new devm_reset_controller_register() API to get rid of the platform driver remove callback. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: fix Kconfig menu to include reset drivers in sub-menuMasahiro Yamada2016-05-302-1/+4
| | | | | | | | | | | | | | | | In "make menuconfig", reset drivers are currently lined up together with the reset sub-system menu, like this: -*- Reset Controller Support ---- < > Hi6220 Reset Driver (It also means, the menu "Reset Controller Support" is always empty.) "Hi6220 Reset Driver" should go into the sub-menu of the "Reset Controller Support". Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: zynq: use devm_reset_controller_register()Masahiro Yamada2016-05-301-11/+1
| | | | | | | | Use devm_reset_controller_register() for the reset controller registration and drop the .remove callback. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: socfpga: use devm_reset_controller_register()Masahiro Yamada2016-05-301-11/+1
| | | | | | | | Use devm_reset_controller_register() for the reset controller registration and drop the .remove callback. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: sunxi: use devm_reset_controller_register()Masahiro Yamada2016-05-301-11/+1
| | | | | | | | Use devm_reset_controller_register() for the reset controller registration and drop the .remove callback. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: pistachio: use devm_reset_controller_register()Masahiro Yamada2016-05-301-11/+1
| | | | | | | | Use devm_reset_controller_register() for the reset controller registration and drop the .remove callback. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: ath79: use devm_reset_controller_register()Masahiro Yamada2016-05-301-2/+1
| | | | | | | | Use devm_reset_controller_register() for the reset controller registration and remove the unregister call from the .remove callback. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: add devm_reset_controller_register APIMasahiro Yamada2016-05-301-0/+37
| | | | | | | | | | | Add a device managed API for reset_controller_register(). This helps in reducing code in .remove callbacks and sometimes dropping .remove callbacks entirely. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: Add Oxford Semiconductor Reset Controller driverNeil Armstrong2016-04-013-0/+140
| | | | | | | | | Add System reset controller driver for Oxford Semiconductor OXNAS SoC Family. CC: Ma Haijun <mahaijuns@gmail.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: lpc18xx: get rid of global variables for restart notifierJoachim Eastwood2016-03-301-12/+10
| | | | | | | | | Moving the notifier_block into the drivers priv struct allows us to retrive the priv struct with container_of and remove the global variables. Signed-off-by: Joachim Eastwood <manabian@gmail.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: Add support for shared reset controlsHans de Goede2016-03-301-11/+48
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In some SoCs some hw-blocks share a reset control. Add support for this setup by adding new: reset_control_get_shared() devm_reset_control_get_shared() devm_reset_control_get_shared_by_index() methods to get a reset_control. Note that this patch omits adding of_ variants, if these are needed later they can be easily added. This patch also changes the behavior of the existing exclusive reset_control_get() variants, if these are now called more then once for the same reset_control they will return -EBUSY. To catch existing drivers triggering this error (there should not be any) a WARN_ON(1) is added in this path. When a reset_control is shared, the behavior of reset_control_assert / deassert is changed, for shared reset_controls these will work like the clock-enable/disable and regulator-on/off functions. They will keep a deassert_count, and only (re-)assert the reset after reset_control_assert has been called as many times as reset_control_deassert was called. Calling reset_control_assert without first calling reset_control_deassert is not allowed on a shared reset control. Calling reset_control_reset is also not allowed on a shared reset control. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: Share struct reset_control between reset_control_get callsHans de Goede2016-03-301-21/+63
| | | | | | | | | | | | Now that struct reset_control no longer stores the device pointer for the device calling reset_control_get we can share a single struct reset_control when multiple calls to reset_control_get are made for the same reset line (same id / index). This is a preparation patch for adding support for shared reset lines. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: Make [of_]reset_control_get[_foo] functions wrappersHans de Goede2016-03-301-67/+17
| | | | | | | | | | | | | With both the regular, _by_index and _optional variants we already have quite a few variants of [of_]reset_control_get[_foo], the upcoming addition of shared reset lines support makes this worse. This commit changes all the variants into wrappers around common core functions. For completeness sake this commit also adds a new devm_get_reset_control_by_index wrapper. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: sti: Make reset_control_ops constPhilipp Zabel2016-02-101-1/+1
| | | | | | The syscfg_reset_ops structure is never modified. Make it const. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: zynq: Make reset_control_ops constPhilipp Zabel2016-02-101-1/+1
| | | | | | The zynq_reset_ops structure is never modified. Make it const. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: socfpga: Make reset_control_ops constPhilipp Zabel2016-02-101-1/+1
| | | | | | The socfpga_reset_ops structure is never modified. Make it const. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: hi6220: Make reset_control_ops constPhilipp Zabel2016-02-101-1/+1
| | | | | | The hi6220_reset_ops structure is never modified. Make it const. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* reset: ath79: Make reset_control_ops constPhilipp Zabel2016-02-101-1/+1
| | | | | | | The ath79_reset_ops structure is never modified. Make it const. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Acked-by: Alban Bedel <albeu@free.fr>
* reset: lpc18xx: Make reset_control_ops constPhilipp Zabel2016-02-081-1/+1
| | | | | | | The lpc18xx_rgu_ops structure is never modified. Make it const. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Acked-by: Joachim Eastwood <manabian@gmail.com>
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