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author | Gabriel Fernandez <gabriel.fernandez@foss.st.com> | 2021-06-17 07:18:09 +0200 |
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committer | Stephen Boyd <sboyd@kernel.org> | 2021-06-28 16:08:48 -0700 |
commit | 590ff40e06d802f6080e03443c6bcff0cd4ba37d (patch) | |
tree | 19a75d23c9aefc8f5a1314d1733842f009f24dfd /drivers/reset | |
parent | c392df194a2d126124128c9ce2109b27e3c43077 (diff) | |
download | lwn-590ff40e06d802f6080e03443c6bcff0cd4ba37d.tar.gz lwn-590ff40e06d802f6080e03443c6bcff0cd4ba37d.zip |
reset: stm32mp1: remove stm32mp1 reset
st32mp1 RCC reset driver was moved into stm32mp1 RCC clock driver.
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@foss.st.com>
Link: https://lore.kernel.org/r/20210617051814.12018-7-gabriel.fernandez@foss.st.com
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Diffstat (limited to 'drivers/reset')
-rw-r--r-- | drivers/reset/Kconfig | 6 | ||||
-rw-r--r-- | drivers/reset/Makefile | 1 | ||||
-rw-r--r-- | drivers/reset/reset-stm32mp1.c | 115 |
3 files changed, 0 insertions, 122 deletions
diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig index 3e7f55e44d84..29fb33c0e26d 100644 --- a/drivers/reset/Kconfig +++ b/drivers/reset/Kconfig @@ -199,12 +199,6 @@ config RESET_SIMPLE - ZTE's zx2967 family - SiFive FU740 SoCs -config RESET_STM32MP157 - bool "STM32MP157 Reset Driver" if COMPILE_TEST - default MACH_STM32MP157 - help - This enables the RCC reset controller driver for STM32 MPUs. - config RESET_SOCFPGA bool "SoCFPGA Reset Driver" if COMPILE_TEST && (!ARM || !ARCH_INTEL_SOCFPGA) default ARM && ARCH_INTEL_SOCFPGA diff --git a/drivers/reset/Makefile b/drivers/reset/Makefile index 65a118a91b27..ac3e612ad953 100644 --- a/drivers/reset/Makefile +++ b/drivers/reset/Makefile @@ -26,7 +26,6 @@ obj-$(CONFIG_RESET_QCOM_PDC) += reset-qcom-pdc.o obj-$(CONFIG_RESET_RASPBERRYPI) += reset-raspberrypi.o obj-$(CONFIG_RESET_SCMI) += reset-scmi.o obj-$(CONFIG_RESET_SIMPLE) += reset-simple.o -obj-$(CONFIG_RESET_STM32MP157) += reset-stm32mp1.o obj-$(CONFIG_RESET_SOCFPGA) += reset-socfpga.o obj-$(CONFIG_RESET_SUNXI) += reset-sunxi.o obj-$(CONFIG_RESET_TI_SCI) += reset-ti-sci.o diff --git a/drivers/reset/reset-stm32mp1.c b/drivers/reset/reset-stm32mp1.c deleted file mode 100644 index b221a28041fa..000000000000 --- a/drivers/reset/reset-stm32mp1.c +++ /dev/null @@ -1,115 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Copyright (C) STMicroelectronics 2018 - All Rights Reserved - * Author: Gabriel Fernandez <gabriel.fernandez@st.com> for STMicroelectronics. - */ - -#include <linux/device.h> -#include <linux/err.h> -#include <linux/io.h> -#include <linux/of.h> -#include <linux/platform_device.h> -#include <linux/reset-controller.h> - -#define CLR_OFFSET 0x4 - -struct stm32_reset_data { - struct reset_controller_dev rcdev; - void __iomem *membase; -}; - -static inline struct stm32_reset_data * -to_stm32_reset_data(struct reset_controller_dev *rcdev) -{ - return container_of(rcdev, struct stm32_reset_data, rcdev); -} - -static int stm32_reset_update(struct reset_controller_dev *rcdev, - unsigned long id, bool assert) -{ - struct stm32_reset_data *data = to_stm32_reset_data(rcdev); - int reg_width = sizeof(u32); - int bank = id / (reg_width * BITS_PER_BYTE); - int offset = id % (reg_width * BITS_PER_BYTE); - void __iomem *addr; - - addr = data->membase + (bank * reg_width); - if (!assert) - addr += CLR_OFFSET; - - writel(BIT(offset), addr); - - return 0; -} - -static int stm32_reset_assert(struct reset_controller_dev *rcdev, - unsigned long id) -{ - return stm32_reset_update(rcdev, id, true); -} - -static int stm32_reset_deassert(struct reset_controller_dev *rcdev, - unsigned long id) -{ - return stm32_reset_update(rcdev, id, false); -} - -static int stm32_reset_status(struct reset_controller_dev *rcdev, - unsigned long id) -{ - struct stm32_reset_data *data = to_stm32_reset_data(rcdev); - int reg_width = sizeof(u32); - int bank = id / (reg_width * BITS_PER_BYTE); - int offset = id % (reg_width * BITS_PER_BYTE); - u32 reg; - - reg = readl(data->membase + (bank * reg_width)); - - return !!(reg & BIT(offset)); -} - -static const struct reset_control_ops stm32_reset_ops = { - .assert = stm32_reset_assert, - .deassert = stm32_reset_deassert, - .status = stm32_reset_status, -}; - -static const struct of_device_id stm32_reset_dt_ids[] = { - { .compatible = "st,stm32mp1-rcc"}, - { /* sentinel */ }, -}; - -static int stm32_reset_probe(struct platform_device *pdev) -{ - struct device *dev = &pdev->dev; - struct stm32_reset_data *data; - void __iomem *membase; - struct resource *res; - - data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); - if (!data) - return -ENOMEM; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - membase = devm_ioremap_resource(dev, res); - if (IS_ERR(membase)) - return PTR_ERR(membase); - - data->membase = membase; - data->rcdev.owner = THIS_MODULE; - data->rcdev.nr_resets = resource_size(res) * BITS_PER_BYTE; - data->rcdev.ops = &stm32_reset_ops; - data->rcdev.of_node = dev->of_node; - - return devm_reset_controller_register(dev, &data->rcdev); -} - -static struct platform_driver stm32_reset_driver = { - .probe = stm32_reset_probe, - .driver = { - .name = "stm32mp1-reset", - .of_match_table = stm32_reset_dt_ids, - }, -}; - -builtin_platform_driver(stm32_reset_driver); |