[v2,8/9] reset: amlogic: split the device core and platform probe

Message ID	20240718095755.3511992-9-jbrunet@baylibre.com (mailing list archive)
State	Superseded
Headers	show Return-Path: <linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org> From: Jerome Brunet <jbrunet@baylibre.com> To: Philipp Zabel <p.zabel@pengutronix.de>, Stephen Boyd <sboyd@kernel.org>, Neil Armstrong <neil.armstrong@linaro.org> Cc: Jerome Brunet <jbrunet@baylibre.com>, Jan Dakinevich <jan.dakinevich@salutedevices.com>, linux-kernel@vger.kernel.org, linux-amlogic@lists.infradead.org, linux-clk@vger.kernel.org Subject: [PATCH v2 8/9] reset: amlogic: split the device core and platform probe Date: Thu, 18 Jul 2024 11:57:52 +0200 Message-ID: <20240718095755.3511992-9-jbrunet@baylibre.com> In-Reply-To: <20240718095755.3511992-1-jbrunet@baylibre.com> References: <20240718095755.3511992-1-jbrunet@baylibre.com> MIME-Version: 1.0 Precedence: list Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" <linux-amlogic-bounces@lists.infradead.org> Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org
Series	reset: amlogic: move audio reset drivers out of CCF \| expand [v2,0/9] reset: amlogic: move audio reset drivers out of CCF [v2,1/9] reset: amlogic: convert driver to regmap [v2,2/9] reset: amlogic: use generic data matching function [v2,3/9] reset: amlogic: make parameters unsigned [v2,4/9] reset: amlogic: add driver parameters [v2,5/9] reset: amlogic: use reset number instead of register count [v2,6/9] reset: amlogic: add reset status support [v2,7/9] reset: amlogic: move drivers to a dedicated directory [v2,8/9] reset: amlogic: split the device core and platform probe [v2,9/9] reset: amlogic: add auxiliary reset driver support

diff --git a/drivers/reset/amlogic/Kconfig b/drivers/reset/amlogic/Kconfig index 7ed9cf50f038..04c7be0f3165 100644 --- a/drivers/reset/amlogic/Kconfig +++ b/drivers/reset/amlogic/Kconfig @@ -1,9 +1,15 @@ +config RESET_MESON_CORE + tristate + select REGMAP + config RESET_MESON - tristate "Meson Reset Driver" + tristate "Meson Reset Platform Driver" depends on ARCH_MESON || COMPILE_TEST default ARCH_MESON + select REGMAP_MMIO + select RESET_MESON_CORE help - This enables the reset driver for Amlogic Meson SoCs. + This enables the reset platform driver for Amlogic SoCs. config RESET_MESON_AUDIO_ARB tristate "Meson Audio Memory Arbiter Reset Driver" diff --git a/drivers/reset/amlogic/Makefile b/drivers/reset/amlogic/Makefile index 55509fc78513..0f8f9121b566 100644 --- a/drivers/reset/amlogic/Makefile +++ b/drivers/reset/amlogic/Makefile @@ -1,2 +1,3 @@ -obj-$(CONFIG_RESET_MESON) += reset-meson.o +obj-$(CONFIG_RESET_MESON) += reset-meson-pltf.o +obj-$(CONFIG_RESET_MESON_CORE) += reset-meson-core.o obj-$(CONFIG_RESET_MESON_AUDIO_ARB) += reset-meson-audio-arb.o diff --git a/drivers/reset/amlogic/reset-meson.c b/drivers/reset/amlogic/reset-meson-core.c similarity index 51% rename from drivers/reset/amlogic/reset-meson.c rename to drivers/reset/amlogic/reset-meson-core.c index b3ef1a1c7cf9..5e23f3212e6d 100644 --- a/drivers/reset/amlogic/reset-meson.c +++ b/drivers/reset/amlogic/reset-meson-core.c @@ -1,27 +1,17 @@ // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause /* - * Amlogic Meson Reset Controller driver + * Amlogic Meson Reset core functions * - * Copyright (c) 2016 BayLibre, SAS. - * Author: Neil Armstrong <narmstrong@baylibre.com> + * Copyright (c) 2024 BayLibre, SAS. + * Author: Jerome Brunet <jbrunet@baylibre.com> */ -#include <linux/err.h> -#include <linux/init.h> -#include <linux/io.h> -#include <linux/of.h> + +#include <linux/device.h> #include <linux/module.h> -#include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/reset-controller.h> -#include <linux/slab.h> -#include <linux/types.h> - -struct meson_reset_param { - unsigned int reset_num; - unsigned int reset_offset; - unsigned int level_offset; - bool level_low_reset; -}; + +#include "reset-meson.h" struct meson_reset { const struct meson_reset_param *param; @@ -103,84 +93,27 @@ static const struct reset_control_ops meson_reset_ops = { .status = meson_reset_status, }; -static const struct meson_reset_param meson8b_param = { - .reset_num = 256, - .reset_offset = 0x0, - .level_offset = 0x7c, - .level_low_reset = true, -}; - -static const struct meson_reset_param meson_a1_param = { - .reset_num = 96, - .reset_offset = 0x0, - .level_offset = 0x40, - .level_low_reset = true, -}; - -static const struct meson_reset_param meson_s4_param = { - .reset_num = 192, - .reset_offset = 0x0, - .level_offset = 0x40, - .level_low_reset = true, -}; - -static const struct of_device_id meson_reset_dt_ids[] = { - { .compatible = "amlogic,meson8b-reset", .data = &meson8b_param}, - { .compatible = "amlogic,meson-gxbb-reset", .data = &meson8b_param}, - { .compatible = "amlogic,meson-axg-reset", .data = &meson8b_param}, - { .compatible = "amlogic,meson-a1-reset", .data = &meson_a1_param}, - { .compatible = "amlogic,meson-s4-reset", .data = &meson_s4_param}, - { .compatible = "amlogic,c3-reset", .data = &meson_s4_param}, - { /* sentinel */ }, -}; -MODULE_DEVICE_TABLE(of, meson_reset_dt_ids); - -static const struct regmap_config regmap_config = { - .reg_bits = 32, - .val_bits = 32, - .reg_stride = 4, -}; - -static int meson_reset_probe(struct platform_device *pdev) +int meson_reset_probe(struct device *dev, struct regmap *map, + const struct meson_reset_param *param) { - struct device *dev = &pdev->dev; struct meson_reset *data; - void __iomem *base; data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); if (!data) return -ENOMEM; - base = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(base)) - return PTR_ERR(base); - - data->param = device_get_match_data(dev); - if (!data->param) - return -ENODEV; - - data->map = devm_regmap_init_mmio(dev, base, &regmap_config); - if (IS_ERR(data->map)) - return dev_err_probe(dev, PTR_ERR(data->map), - "can't init regmap mmio region\n"); - - data->rcdev.owner = THIS_MODULE; - data->rcdev.nr_resets = data->param->reset_num; + data->param = param; + data->map = map; + data->rcdev.owner = dev->driver->owner; + data->rcdev.nr_resets = param->reset_num; data->rcdev.ops = &meson_reset_ops; data->rcdev.of_node = dev->of_node; return devm_reset_controller_register(dev, &data->rcdev); } +EXPORT_SYMBOL_NS_GPL(meson_reset_probe, MESON_RESET); -static struct platform_driver meson_reset_driver = { - .probe = meson_reset_probe, - .driver = { - .name = "meson_reset", - .of_match_table = meson_reset_dt_ids, - }, -}; -module_platform_driver(meson_reset_driver); - -MODULE_DESCRIPTION("Amlogic Meson Reset Controller driver"); +MODULE_DESCRIPTION("Amlogic Meson Reset Core function"); MODULE_AUTHOR("Neil Armstrong <narmstrong@baylibre.com>"); -MODULE_LICENSE("Dual BSD/GPL"); +MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>"); +MODULE_IMPORT_NS(MESON_RESET); diff --git a/drivers/reset/amlogic/reset-meson-pltf.c b/drivers/reset/amlogic/reset-meson-pltf.c new file mode 100644 index 000000000000..97e933b4aa34 --- /dev/null +++ b/drivers/reset/amlogic/reset-meson-pltf.c @@ -0,0 +1,92 @@ +// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause +/* + * Amlogic Meson Reset platform driver + * + * Copyright (c) 2016 BayLibre, SAS. + * Author: Neil Armstrong <narmstrong@baylibre.com> + */ +#include <linux/err.h> +#include <linux/io.h> +#include <linux/of.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <linux/reset-controller.h> + +#include "reset-meson.h" + +static const struct meson_reset_param meson8b_param = { + .reset_num = 256, + .reset_offset = 0x0, + .level_offset = 0x7c, + .level_low_reset = true, +}; + +static const struct meson_reset_param meson_a1_param = { + .reset_num = 96, + .reset_offset = 0x0, + .level_offset = 0x40, + .level_low_reset = true, +}; + +static const struct meson_reset_param meson_s4_param = { + .reset_num = 192, + .reset_offset = 0x0, + .level_offset = 0x40, + .level_low_reset = true, +}; + +static const struct of_device_id meson_reset_dt_ids[] = { + { .compatible = "amlogic,meson8b-reset", .data = &meson8b_param}, + { .compatible = "amlogic,meson-gxbb-reset", .data = &meson8b_param}, + { .compatible = "amlogic,meson-axg-reset", .data = &meson8b_param}, + { .compatible = "amlogic,meson-a1-reset", .data = &meson_a1_param}, + { .compatible = "amlogic,meson-s4-reset", .data = &meson_s4_param}, + { .compatible = "amlogic,c3-reset", .data = &meson_s4_param}, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, meson_reset_dt_ids); + +static const struct regmap_config regmap_config = { + .reg_bits = 32, + .val_bits = 32, + .reg_stride = 4, +}; + +static int meson_reset_pltf_probe(struct platform_device *pdev) +{ + const struct meson_reset_param *param; + struct device *dev = &pdev->dev; + struct regmap *map; + void __iomem *base; + + base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(base)) + return PTR_ERR(base); + + param = device_get_match_data(dev); + if (!param) + return -ENODEV; + + map = devm_regmap_init_mmio(dev, base, &regmap_config); + if (IS_ERR(map)) + return dev_err_probe(dev, PTR_ERR(map), + "can't init regmap mmio region\n"); + + return meson_reset_probe(dev, map, param); +} + +static struct platform_driver meson_reset_pltf_driver = { + .probe = meson_reset_pltf_probe, + .driver = { + .name = "meson_reset", + .of_match_table = meson_reset_dt_ids, + }, +}; +module_platform_driver(meson_reset_pltf_driver); + +MODULE_DESCRIPTION("Amlogic Meson Reset Platform Controller driver"); +MODULE_AUTHOR("Neil Armstrong <narmstrong@baylibre.com>"); +MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>"); +MODULE_LICENSE("Dual BSD/GPL"); +MODULE_IMPORT_NS(MESON_RESET); diff --git a/drivers/reset/amlogic/reset-meson.h b/drivers/reset/amlogic/reset-meson.h new file mode 100644 index 000000000000..c2e8a5cf2e46 --- /dev/null +++ b/drivers/reset/amlogic/reset-meson.h @@ -0,0 +1,24 @@ +/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ +/* + * Copyright (c) 2024 BayLibre, SAS. + * Author: Jerome Brunet <jbrunet@baylibre.com> + */ + +#ifndef __MESON_RESET_CORE_H +#define __MESON_RESET_CORE_H + +#include <linux/module.h> +#include <linux/regmap.h> +#include <linux/reset-controller.h> + +struct meson_reset_param { + unsigned int reset_num; + unsigned int reset_offset; + unsigned int level_offset; + bool level_low_reset; +}; + +int meson_reset_probe(struct device *dev, struct regmap *map, + const struct meson_reset_param *param); + +#endif /* __MESON_RESET_CORE_H */

[v2,8/9] reset: amlogic: split the device core and platform probe

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