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linux/drivers/reset/reset-simple.c

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 Based on 1 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 as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-27 08:55:01 +02:00
reset: add reset-simple to unify socfpga, stm32, sunxi, and zx2967 Copy reusable parts from the sunxi driver, to add a driver for simple reset controllers with reset lines that can be controlled by toggling bits in exclusive, contiguous register ranges using read-modify-write cycles under a spinlock. The following patches will replace compatible reset drivers with reset-simple, extending it where necessary. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Alexandru Gagniuc <alex.g@adaptrum.com> Reviewed-by: Chen-Yu Tsai <wens@csie.org>
2017-08-11 12:58:43 +02:00
reset: simple: Add reset callback The reset-simple code lacks a reset callback that is still pretty easy to implement. The only real thing to consider is the delay needed for a device to be reset, so let's expose that as part of the reset-simple driver data. Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Maxime Ripard <maxime@cerno.tech> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2020-05-27 17:47:32 +02:00
reset: add reset-simple to unify socfpga, stm32, sunxi, and zx2967 Copy reusable parts from the sunxi driver, to add a driver for simple reset controllers with reset lines that can be controlled by toggling bits in exclusive, contiguous register ranges using read-modify-write cycles under a spinlock. The following patches will replace compatible reset drivers with reset-simple, extending it where necessary. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Alexandru Gagniuc <alex.g@adaptrum.com> Reviewed-by: Chen-Yu Tsai <wens@csie.org>
2017-08-11 12:58:43 +02:00
reset: Move reset-simple header out of drivers/reset The reset-simple code can be useful for drivers outside of drivers/reset that have a few reset controls as part of their features. Let's move it to include/linux/reset. Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Maxime Ripard <maxime@cerno.tech> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2020-05-27 17:47:31 +02:00
reset: add reset-simple to unify socfpga, stm32, sunxi, and zx2967 Copy reusable parts from the sunxi driver, to add a driver for simple reset controllers with reset lines that can be controlled by toggling bits in exclusive, contiguous register ranges using read-modify-write cycles under a spinlock. The following patches will replace compatible reset drivers with reset-simple, extending it where necessary. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Alexandru Gagniuc <alex.g@adaptrum.com> Reviewed-by: Chen-Yu Tsai <wens@csie.org>
2017-08-11 12:58:43 +02:00
reset: simple: Add reset callback The reset-simple code lacks a reset callback that is still pretty easy to implement. The only real thing to consider is the delay needed for a device to be reset, so let's expose that as part of the reset-simple driver data. Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Maxime Ripard <maxime@cerno.tech> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2020-05-27 17:47:32 +02:00
reset: socfpga: use the reset-simple driver Add reset line status readback, inverted status support, and socfpga device tree quirks to the simple reset driver, and use it to replace the socfpga driver. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-08-11 13:02:19 +02:00
reset: add reset-simple to unify socfpga, stm32, sunxi, and zx2967 Copy reusable parts from the sunxi driver, to add a driver for simple reset controllers with reset lines that can be controlled by toggling bits in exclusive, contiguous register ranges using read-modify-write cycles under a spinlock. The following patches will replace compatible reset drivers with reset-simple, extending it where necessary. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Alexandru Gagniuc <alex.g@adaptrum.com> Reviewed-by: Chen-Yu Tsai <wens@csie.org>
2017-08-11 12:58:43 +02:00
reset: simple: Add reset callback The reset-simple code lacks a reset callback that is still pretty easy to implement. The only real thing to consider is the delay needed for a device to be reset, so let's expose that as part of the reset-simple driver data. Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Maxime Ripard <maxime@cerno.tech> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2020-05-27 17:47:32 +02:00
reset: socfpga: use the reset-simple driver Add reset line status readback, inverted status support, and socfpga device tree quirks to the simple reset driver, and use it to replace the socfpga driver. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-08-11 13:02:19 +02:00
reset: add reset-simple to unify socfpga, stm32, sunxi, and zx2967 Copy reusable parts from the sunxi driver, to add a driver for simple reset controllers with reset lines that can be controlled by toggling bits in exclusive, contiguous register ranges using read-modify-write cycles under a spinlock. The following patches will replace compatible reset drivers with reset-simple, extending it where necessary. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Alexandru Gagniuc <alex.g@adaptrum.com> Reviewed-by: Chen-Yu Tsai <wens@csie.org>
2017-08-11 12:58:43 +02:00
reset: simple: export reset_simple_ops to be referred from modules Allow reset_simple_ops to be referred from modules that use reset-simple framework by adding EXPORT_SYMBOL_GPL. Suggested-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2018-07-04 19:13:56 +09:00
reset: add reset-simple to unify socfpga, stm32, sunxi, and zx2967 Copy reusable parts from the sunxi driver, to add a driver for simple reset controllers with reset lines that can be controlled by toggling bits in exclusive, contiguous register ranges using read-modify-write cycles under a spinlock. The following patches will replace compatible reset drivers with reset-simple, extending it where necessary. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Alexandru Gagniuc <alex.g@adaptrum.com> Reviewed-by: Chen-Yu Tsai <wens@csie.org>
2017-08-11 12:58:43 +02:00
reset: socfpga: use the reset-simple driver Add reset line status readback, inverted status support, and socfpga device tree quirks to the simple reset driver, and use it to replace the socfpga driver. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-08-11 13:02:19 +02:00
reset: add reset-simple to unify socfpga, stm32, sunxi, and zx2967 Copy reusable parts from the sunxi driver, to add a driver for simple reset controllers with reset lines that can be controlled by toggling bits in exclusive, contiguous register ranges using read-modify-write cycles under a spinlock. The following patches will replace compatible reset drivers with reset-simple, extending it where necessary. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Alexandru Gagniuc <alex.g@adaptrum.com> Reviewed-by: Chen-Yu Tsai <wens@csie.org>
2017-08-11 12:58:43 +02:00
reset: socfpga: use the reset-simple driver Add reset line status readback, inverted status support, and socfpga device tree quirks to the simple reset driver, and use it to replace the socfpga driver. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-08-11 13:02:19 +02:00
reset: add reset-simple to unify socfpga, stm32, sunxi, and zx2967 Copy reusable parts from the sunxi driver, to add a driver for simple reset controllers with reset lines that can be controlled by toggling bits in exclusive, contiguous register ranges using read-modify-write cycles under a spinlock. The following patches will replace compatible reset drivers with reset-simple, extending it where necessary. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Alexandru Gagniuc <alex.g@adaptrum.com> Reviewed-by: Chen-Yu Tsai <wens@csie.org>
2017-08-11 12:58:43 +02:00
reset: socfpga: use the reset-simple driver Add reset line status readback, inverted status support, and socfpga device tree quirks to the simple reset driver, and use it to replace the socfpga driver. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-08-11 13:02:19 +02:00
reset: add reset-simple to unify socfpga, stm32, sunxi, and zx2967 Copy reusable parts from the sunxi driver, to add a driver for simple reset controllers with reset lines that can be controlled by toggling bits in exclusive, contiguous register ranges using read-modify-write cycles under a spinlock. The following patches will replace compatible reset drivers with reset-simple, extending it where necessary. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Alexandru Gagniuc <alex.g@adaptrum.com> Reviewed-by: Chen-Yu Tsai <wens@csie.org>
2017-08-11 12:58:43 +02:00
reset: socfpga: use the reset-simple driver Add reset line status readback, inverted status support, and socfpga device tree quirks to the simple reset driver, and use it to replace the socfpga driver. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-08-11 13:02:19 +02:00
reset: socfpga: add an early reset driver for SoCFPGA Create a separate reset driver that uses the reset operations in reset-simple. The reset driver for the SoCFPGA platform needs to register early in order to be able bring online timers that needed early in the kernel bootup. We do not need this early reset driver for Stratix10, because on arm64, Linux does not need the timers are that in reset. Linux is able to run just fine with the internal armv8 timer. Thus, we use a new binding "altr,stratix10-rst-mgr" for the Stratix10 platform. The Stratix10 platform will continue to use the reset-simple platform driver, while the 32-bit platforms(Cyclone5/Arria5/Arria10) will use the early reset driver. Signed-off-by: Dinh Nguyen <dinguyen@kernel.org> [p.zabel@pengutronix.de: fixed socfpga of_device_id in reset-simple] Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2018-11-13 12:50:48 -06:00
reset: socfpga: use the reset-simple driver Add reset line status readback, inverted status support, and socfpga device tree quirks to the simple reset driver, and use it to replace the socfpga driver. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-08-11 13:02:19 +02:00
reset: add reset-simple to unify socfpga, stm32, sunxi, and zx2967 Copy reusable parts from the sunxi driver, to add a driver for simple reset controllers with reset lines that can be controlled by toggling bits in exclusive, contiguous register ranges using read-modify-write cycles under a spinlock. The following patches will replace compatible reset drivers with reset-simple, extending it where necessary. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Alexandru Gagniuc <alex.g@adaptrum.com> Reviewed-by: Chen-Yu Tsai <wens@csie.org>
2017-08-11 12:58:43 +02:00
reset: socfpga: use the reset-simple driver Add reset line status readback, inverted status support, and socfpga device tree quirks to the simple reset driver, and use it to replace the socfpga driver. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-08-11 13:02:19 +02:00
reset: add reset-simple to unify socfpga, stm32, sunxi, and zx2967 Copy reusable parts from the sunxi driver, to add a driver for simple reset controllers with reset lines that can be controlled by toggling bits in exclusive, contiguous register ranges using read-modify-write cycles under a spinlock. The following patches will replace compatible reset drivers with reset-simple, extending it where necessary. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Alexandru Gagniuc <alex.g@adaptrum.com> Reviewed-by: Chen-Yu Tsai <wens@csie.org>
2017-08-11 12:58:43 +02:00
reset: socfpga: add an early reset driver for SoCFPGA Create a separate reset driver that uses the reset operations in reset-simple. The reset driver for the SoCFPGA platform needs to register early in order to be able bring online timers that needed early in the kernel bootup. We do not need this early reset driver for Stratix10, because on arm64, Linux does not need the timers are that in reset. Linux is able to run just fine with the internal armv8 timer. Thus, we use a new binding "altr,stratix10-rst-mgr" for the Stratix10 platform. The Stratix10 platform will continue to use the reset-simple platform driver, while the 32-bit platforms(Cyclone5/Arria5/Arria10) will use the early reset driver. Signed-off-by: Dinh Nguyen <dinguyen@kernel.org> [p.zabel@pengutronix.de: fixed socfpga of_device_id in reset-simple] Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2018-11-13 12:50:48 -06:00
reset: stm32: use the reset-simple driver The reset-simple driver can be used without changes. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Acked-by: Gabriel Fernandez <gabriel.fernandez@st.com>
2017-08-11 13:02:47 +02:00
reset: add reset-simple to unify socfpga, stm32, sunxi, and zx2967 Copy reusable parts from the sunxi driver, to add a driver for simple reset controllers with reset lines that can be controlled by toggling bits in exclusive, contiguous register ranges using read-modify-write cycles under a spinlock. The following patches will replace compatible reset drivers with reset-simple, extending it where necessary. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Alexandru Gagniuc <alex.g@adaptrum.com> Reviewed-by: Chen-Yu Tsai <wens@csie.org>
2017-08-11 12:58:43 +02:00
reset: zx2967: use the reset-simple driver The reset-simple driver can be used without changes. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Alexandru Gagniuc <alex.g@adaptrum.com>
2017-08-11 13:03:05 +02:00
reset: simple: Enable for ASPEED systems ASPEED BMC SoCs have a reset controller in the LPC IP that can be controlled using this driver to release the UARTs from reset. No special configuration is required, so only the compatible string is added. Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2018-02-20 12:13:29 +10:30
reset: simple: Add AST2600 compatible Similar to the 2400 and 2500, the LPC controller has some simple reset lines that are used by the UART devices. This is already documented in LPC bindings document. Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Link: https://lore.kernel.org/r/20220221072650.129348-1-joel@jms.id.au
2022-02-21 17:56:50 +10:30
reset: Add reset controller support for BM1880 SoC Add reset controller support for Bitmain BM1880 SoC reusing the reset-simple driver. Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2019-05-11 00:15:24 +05:30
reset: simple: add BCM4908 MISC PCIe reset controller support It's a trivial reset controller. One register with bit per PCIe core. Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2020-11-27 12:14:42 +01:00
reset: Add DesignWare IP support to simple reset The reset-simple driver can be now used on DesignWare IPs by default by selecting the following compatible strings: - snps,dw-high-reset for active high resets inputs - snps,dw-low-reset for active low resets inputs Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com> Signed-off-by: Luis Oliveira <luis.oliveira@synopsys.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2019-07-23 17:17:28 +02:00
reset: simple: add support for Sophgo CV1800B Reuse reset-simple driver for the Sophgo CV1800B reset generator. Signed-off-by: Inochi Amaoto <inochiama@gmail.com> Reviewed-by: Alexander Sverdlin <alexander.sverdlin@gmail.com> Tested-by: Alexander Sverdlin <alexander.sverdlin@gmail.com> Link: https://lore.kernel.org/r/20250617070144.1149926-3-inochiama@gmail.com Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2025-06-17 15:01:40 +08:00
reset: simple: add support for Sophgo SG2042 Reuse reset-simple driver for the Sophgo SG2042 reset generator. Signed-off-by: Chen Wang <unicorn_wang@outlook.com> Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> Link: https://lore.kernel.org/r/1cfd7b3ba447942784c4f7aa595e962399e9f617.1706577450.git.unicorn_wang@outlook.com Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2024-01-30 09:50:08 +08:00
reset: add reset-simple to unify socfpga, stm32, sunxi, and zx2967 Copy reusable parts from the sunxi driver, to add a driver for simple reset controllers with reset lines that can be controlled by toggling bits in exclusive, contiguous register ranges using read-modify-write cycles under a spinlock. The following patches will replace compatible reset drivers with reset-simple, extending it where necessary. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Alexandru Gagniuc <alex.g@adaptrum.com> Reviewed-by: Chen-Yu Tsai <wens@csie.org>
2017-08-11 12:58:43 +02:00
reset: socfpga: use the reset-simple driver Add reset line status readback, inverted status support, and socfpga device tree quirks to the simple reset driver, and use it to replace the socfpga driver. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-08-11 13:02:19 +02:00
reset: add reset-simple to unify socfpga, stm32, sunxi, and zx2967 Copy reusable parts from the sunxi driver, to add a driver for simple reset controllers with reset lines that can be controlled by toggling bits in exclusive, contiguous register ranges using read-modify-write cycles under a spinlock. The following patches will replace compatible reset drivers with reset-simple, extending it where necessary. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Alexandru Gagniuc <alex.g@adaptrum.com> Reviewed-by: Chen-Yu Tsai <wens@csie.org>
2017-08-11 12:58:43 +02:00
reset: simple: Convert to devm_platform_get_and_ioremap_resource() Convert platform_get_resource(), devm_ioremap_resource() to a single call to devm_platform_get_and_ioremap_resource(), as this is exactly what this function does. Signed-off-by: Yangtao Li <frank.li@vivo.com> Link: https://lore.kernel.org/r/20230704120211.38122-5-frank.li@vivo.com Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2023-07-04 20:02:09 +08:00
reset: add reset-simple to unify socfpga, stm32, sunxi, and zx2967 Copy reusable parts from the sunxi driver, to add a driver for simple reset controllers with reset lines that can be controlled by toggling bits in exclusive, contiguous register ranges using read-modify-write cycles under a spinlock. The following patches will replace compatible reset drivers with reset-simple, extending it where necessary. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Alexandru Gagniuc <alex.g@adaptrum.com> Reviewed-by: Chen-Yu Tsai <wens@csie.org>
2017-08-11 12:58:43 +02:00
reset: socfpga: use the reset-simple driver Add reset line status readback, inverted status support, and socfpga device tree quirks to the simple reset driver, and use it to replace the socfpga driver. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-08-11 13:02:19 +02:00
reset: add reset-simple to unify socfpga, stm32, sunxi, and zx2967 Copy reusable parts from the sunxi driver, to add a driver for simple reset controllers with reset lines that can be controlled by toggling bits in exclusive, contiguous register ranges using read-modify-write cycles under a spinlock. The following patches will replace compatible reset drivers with reset-simple, extending it where necessary. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Alexandru Gagniuc <alex.g@adaptrum.com> Reviewed-by: Chen-Yu Tsai <wens@csie.org>
2017-08-11 12:58:43 +02:00
reset: socfpga: use the reset-simple driver Add reset line status readback, inverted status support, and socfpga device tree quirks to the simple reset driver, and use it to replace the socfpga driver. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2017-08-11 13:02:19 +02:00
reset: add reset-simple to unify socfpga, stm32, sunxi, and zx2967 Copy reusable parts from the sunxi driver, to add a driver for simple reset controllers with reset lines that can be controlled by toggling bits in exclusive, contiguous register ranges using read-modify-write cycles under a spinlock. The following patches will replace compatible reset drivers with reset-simple, extending it where necessary. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Alexandru Gagniuc <alex.g@adaptrum.com> Reviewed-by: Chen-Yu Tsai <wens@csie.org>
2017-08-11 12:58:43 +02:00