| Message ID | 20240808102742.4095904-9-jbrunet@baylibre.com (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
| Series | reset: amlogic: move audio reset drivers out of CCF | expand |
On 08/08/2024 12:27, Jerome Brunet wrote: > To prepare the addition of the auxiliary device support, split > out the device core function from the probe of the platform device. > > The device core function will be common to both the platform and auxiliary > driver. > > Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> > --- > drivers/reset/amlogic/Kconfig | 10 +- > drivers/reset/amlogic/Makefile | 3 +- > .../{reset-meson.c => reset-meson-core.c} | 101 +++--------------- > drivers/reset/amlogic/reset-meson-pltf.c | 92 ++++++++++++++++ Are we still in 1983 ? please use reset-meson-platform and drop pltf completely > drivers/reset/amlogic/reset-meson.h | 24 +++++ > 5 files changed, 143 insertions(+), 87 deletions(-) > rename drivers/reset/amlogic/{reset-meson.c => reset-meson-core.c} (51%) > create mode 100644 drivers/reset/amlogic/reset-meson-pltf.c > create mode 100644 drivers/reset/amlogic/reset-meson.h > > 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 b16d9c32adb1..ea4fc562f7e6 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> Hmmm no, I'm still an author > + * Copyright (c) 2024 BayLibre, SAS. And Baylibre's Copyright is still from 2016, so use 2016-2024 in this case > + * 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; > @@ -102,84 +92,27 @@ 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, ®map_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, ®map_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 */
On Mon 19 Aug 2024 at 18:33, Neil Armstrong <neil.armstrong@linaro.org> wrote: > On 08/08/2024 12:27, Jerome Brunet wrote: >> To prepare the addition of the auxiliary device support, split >> out the device core function from the probe of the platform device. >> The device core function will be common to both the platform and >> auxiliary >> driver. >> Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> >> --- >> drivers/reset/amlogic/Kconfig | 10 +- >> drivers/reset/amlogic/Makefile | 3 +- >> .../{reset-meson.c => reset-meson-core.c} | 101 +++--------------- >> drivers/reset/amlogic/reset-meson-pltf.c | 92 ++++++++++++++++ > > Are we still in 1983 ? I don't quite get that remark or how it is helping the review. > please use reset-meson-platform and drop pltf completely You are requesting auxiliary -> aux on the patch. So which one will it be ? > >> drivers/reset/amlogic/reset-meson.h | 24 +++++ >> 5 files changed, 143 insertions(+), 87 deletions(-) >> rename drivers/reset/amlogic/{reset-meson.c => reset-meson-core.c} (51%) >> create mode 100644 drivers/reset/amlogic/reset-meson-pltf.c >> create mode 100644 drivers/reset/amlogic/reset-meson.h >> 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 b16d9c32adb1..ea4fc562f7e6 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> > > Hmmm no, I'm still an author > >> + * Copyright (c) 2024 BayLibre, SAS. > > And Baylibre's Copyright is still from 2016, so use 2016-2024 in this case > >> + * 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; >> @@ -102,84 +92,27 @@ 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, ®map_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, ®map_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 */
On 19/08/2024 18:49, Jerome Brunet wrote: > On Mon 19 Aug 2024 at 18:33, Neil Armstrong <neil.armstrong@linaro.org> wrote: > >> On 08/08/2024 12:27, Jerome Brunet wrote: >>> To prepare the addition of the auxiliary device support, split >>> out the device core function from the probe of the platform device. >>> The device core function will be common to both the platform and >>> auxiliary >>> driver. >>> Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> >>> --- >>> drivers/reset/amlogic/Kconfig | 10 +- >>> drivers/reset/amlogic/Makefile | 3 +- >>> .../{reset-meson.c => reset-meson-core.c} | 101 +++--------------- >>> drivers/reset/amlogic/reset-meson-pltf.c | 92 ++++++++++++++++ >> >> Are we still in 1983 ? > > I don't quite get that remark or how it is helping the review. > >> please use reset-meson-platform and drop pltf completely > > You are requesting auxiliary -> aux on the patch. > So which one will it be ? `aux` is easy to read and understandable because written on all multimedia appliances over the world for the last 40years, plft is not > >> >>> drivers/reset/amlogic/reset-meson.h | 24 +++++ >>> 5 files changed, 143 insertions(+), 87 deletions(-) >>> rename drivers/reset/amlogic/{reset-meson.c => reset-meson-core.c} (51%) >>> create mode 100644 drivers/reset/amlogic/reset-meson-pltf.c >>> create mode 100644 drivers/reset/amlogic/reset-meson.h >>> 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 b16d9c32adb1..ea4fc562f7e6 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> >> >> Hmmm no, I'm still an author >> >>> + * Copyright (c) 2024 BayLibre, SAS. >> >> And Baylibre's Copyright is still from 2016, so use 2016-2024 in this case >> >>> + * 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; >>> @@ -102,84 +92,27 @@ 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, ®map_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, ®map_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 */ >
On Mo, 2024-08-19 at 18:49 +0200, Jerome Brunet wrote: > On Mon 19 Aug 2024 at 18:33, Neil Armstrong <neil.armstrong@linaro.org> wrote: > > > On 08/08/2024 12:27, Jerome Brunet wrote: > > > To prepare the addition of the auxiliary device support, split > > > out the device core function from the probe of the platform device. > > > The device core function will be common to both the platform and > > > auxiliary > > > driver. > > > Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> > > > --- > > > drivers/reset/amlogic/Kconfig | 10 +- > > > drivers/reset/amlogic/Makefile | 3 +- > > > .../{reset-meson.c => reset-meson-core.c} | 101 +++--------------- > > > drivers/reset/amlogic/reset-meson-pltf.c | 92 ++++++++++++++++ > > > > Are we still in 1983 ? > > I don't quite get that remark or how it is helping the review. > > > please use reset-meson-platform and drop pltf completely > > You are requesting auxiliary -> aux on the patch. > So which one will it be ? I would prefer to drop the -pltf suffix completely and also to drop the "reset driver" -> "reset platform driver" documentation changes. regards Philipp
On Mon 02 Sep 2024 at 11:47, Philipp Zabel <p.zabel@pengutronix.de> wrote: > On Mo, 2024-08-19 at 18:49 +0200, Jerome Brunet wrote: >> On Mon 19 Aug 2024 at 18:33, Neil Armstrong <neil.armstrong@linaro.org> wrote: >> >> > On 08/08/2024 12:27, Jerome Brunet wrote: >> > > To prepare the addition of the auxiliary device support, split >> > > out the device core function from the probe of the platform device. >> > > The device core function will be common to both the platform and >> > > auxiliary >> > > driver. >> > > Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> >> > > --- >> > > drivers/reset/amlogic/Kconfig | 10 +- >> > > drivers/reset/amlogic/Makefile | 3 +- >> > > .../{reset-meson.c => reset-meson-core.c} | 101 +++--------------- >> > > drivers/reset/amlogic/reset-meson-pltf.c | 92 ++++++++++++++++ >> > >> > Are we still in 1983 ? >> >> I don't quite get that remark or how it is helping the review. >> >> > please use reset-meson-platform and drop pltf completely >> >> You are requesting auxiliary -> aux on the patch. >> So which one will it be ? > > I would prefer to drop the -pltf suffix completely and also to drop the > "reset driver" -> "reset platform driver" documentation changes. Hi Philipp, I'm not sure what you mean with the last documentation bit ? Could you add some details, I'd like to get the next version right. Thanks > > regards > Philipp
On Do, 2024-08-08 at 12:27 +0200, Jerome Brunet wrote: > To prepare the addition of the auxiliary device support, split > out the device core function from the probe of the platform device. > > The device core function will be common to both the platform and auxiliary > driver. > > Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> > --- > drivers/reset/amlogic/Kconfig | 10 +- > drivers/reset/amlogic/Makefile | 3 +- > .../{reset-meson.c => reset-meson-core.c} | 101 +++--------------- > drivers/reset/amlogic/reset-meson-pltf.c | 92 ++++++++++++++++ > drivers/reset/amlogic/reset-meson.h | 24 +++++ > 5 files changed, 143 insertions(+), 87 deletions(-) > rename drivers/reset/amlogic/{reset-meson.c => reset-meson-core.c} (51%) > create mode 100644 drivers/reset/amlogic/reset-meson-pltf.c > create mode 100644 drivers/reset/amlogic/reset-meson.h > > 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" I think this change is unnecessary. > 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. and this as well. > > 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 b16d9c32adb1..ea4fc562f7e6 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; > @@ -102,84 +92,27 @@ 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) I'd rename this to something other than *_probe, as this is not a complete probe function to be used as a .probe callback anymore. meson_reset_probe_common() or meson_reset_controller_register(), maybe? > { > - 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, ®map_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 I'd keep the reset-meson.c name for this file. > @@ -0,0 +1,92 @@ > +// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause > +/* > + * Amlogic Meson Reset platform driver I thought "Amlogic Meson Reset Controller driver" was pretty descriptive. Let's keep that. > + * > + * 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) s/pltf_// > +{ > + 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, ®map_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 = { s/pltf_// > + .probe = meson_reset_pltf_probe, s/pltf_// > + .driver = { > + .name = "meson_reset", > + .of_match_table = meson_reset_dt_ids, > + }, > +}; > +module_platform_driver(meson_reset_pltf_driver); s/pltf_// > + > +MODULE_DESCRIPTION("Amlogic Meson Reset Platform Controller driver"); s/Platform // > +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 */ regards Philipp
On Mo, 2024-09-02 at 11:53 +0200, Jerome Brunet wrote: > On Mon 02 Sep 2024 at 11:47, Philipp Zabel <p.zabel@pengutronix.de> wrote: > > > On Mo, 2024-08-19 at 18:49 +0200, Jerome Brunet wrote: > > > On Mon 19 Aug 2024 at 18:33, Neil Armstrong <neil.armstrong@linaro.org> wrote: > > > > > > > On 08/08/2024 12:27, Jerome Brunet wrote: > > > > > To prepare the addition of the auxiliary device support, split > > > > > out the device core function from the probe of the platform device. > > > > > The device core function will be common to both the platform and > > > > > auxiliary > > > > > driver. > > > > > Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> > > > > > --- > > > > > drivers/reset/amlogic/Kconfig | 10 +- > > > > > drivers/reset/amlogic/Makefile | 3 +- > > > > > .../{reset-meson.c => reset-meson-core.c} | 101 +++--------------- > > > > > drivers/reset/amlogic/reset-meson-pltf.c | 92 ++++++++++++++++ > > > > > > > > Are we still in 1983 ? > > > > > > I don't quite get that remark or how it is helping the review. > > > > > > > please use reset-meson-platform and drop pltf completely > > > > > > You are requesting auxiliary -> aux on the patch. > > > So which one will it be ? > > > > I would prefer to drop the -pltf suffix completely and also to drop the > > "reset driver" -> "reset platform driver" documentation changes. > > Hi Philipp, > > I'm not sure what you mean with the last documentation bit ? Could you add some > details, I'd like to get the next version right. Of course, sorry for being vague. I've replied to the patch with some comments. regards Philipp
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 b16d9c32adb1..ea4fc562f7e6 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; @@ -102,84 +92,27 @@ 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, ®map_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, ®map_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 */
To prepare the addition of the auxiliary device support, split out the device core function from the probe of the platform device. The device core function will be common to both the platform and auxiliary driver. Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> --- drivers/reset/amlogic/Kconfig | 10 +- drivers/reset/amlogic/Makefile | 3 +- .../{reset-meson.c => reset-meson-core.c} | 101 +++--------------- drivers/reset/amlogic/reset-meson-pltf.c | 92 ++++++++++++++++ drivers/reset/amlogic/reset-meson.h | 24 +++++ 5 files changed, 143 insertions(+), 87 deletions(-) rename drivers/reset/amlogic/{reset-meson.c => reset-meson-core.c} (51%) create mode 100644 drivers/reset/amlogic/reset-meson-pltf.c create mode 100644 drivers/reset/amlogic/reset-meson.h