Re: [PATCH v5 8/9] reset: amlogic: split the device core and platform probe
From: Philipp Zabel
Date: Thu Sep 12 2024 - 04:12:30 EST
On Di, 2024-09-10 at 18:32 +0200, Jerome Brunet wrote:
> To prepare the addition of the auxiliary device support, split
> out the device coomon functions 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@xxxxxxxxxxxx>
> ---
> drivers/reset/amlogic/Kconfig | 7 +-
> drivers/reset/amlogic/Makefile | 1 +
> drivers/reset/amlogic/reset-meson-common.c | 121 ++++++++++++++++++++++++++++
> drivers/reset/amlogic/reset-meson.c | 122 ++++-------------------------
> drivers/reset/amlogic/reset-meson.h | 24 ++++++
> 5 files changed, 167 insertions(+), 108 deletions(-)
>
> diff --git a/drivers/reset/amlogic/Kconfig b/drivers/reset/amlogic/Kconfig
> index 532e6a4f7865..1d77987088f4 100644
> --- a/drivers/reset/amlogic/Kconfig
> +++ b/drivers/reset/amlogic/Kconfig
> @@ -1,10 +1,15 @@
> +config RESET_MESON_COMMON
> + tristate
> + select REGMAP
> +
> config RESET_MESON
> tristate "Meson Reset Driver"
> depends on ARCH_MESON || COMPILE_TEST
> default ARCH_MESON
> select REGMAP_MMIO
> + select RESET_MESON_COMMON
> help
> - This enables the reset driver for Amlogic Meson SoCs.
> + This enables the reset 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..74aaa2fb5e13 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_COMMON) += reset-meson-common.o
> obj-$(CONFIG_RESET_MESON_AUDIO_ARB) += reset-meson-audio-arb.o
> diff --git a/drivers/reset/amlogic/reset-meson-common.c b/drivers/reset/amlogic/reset-meson-common.c
> new file mode 100644
> index 000000000000..d57544801ae9
> --- /dev/null
> +++ b/drivers/reset/amlogic/reset-meson-common.c
> @@ -0,0 +1,121 @@
> +// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
> +/*
> + * Amlogic Meson Reset core functions
> + *
> + * Copyright (c) 2016-2024 BayLibre, SAS.
> + * Authors: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
> + * Jerome Brunet <jbrunet@xxxxxxxxxxxx>
> + */
> +
> +#include <linux/device.h>
> +#include <linux/module.h>
> +#include <linux/regmap.h>
> +#include <linux/reset-controller.h>
> +
> +#include "reset-meson.h"
> +
> +struct meson_reset {
> + const struct meson_reset_param *param;
> + struct reset_controller_dev rcdev;
> + struct regmap *map;
> +};
> +
> +static void meson_reset_offset_and_bit(struct meson_reset *data,
> + unsigned long id,
> + unsigned int *offset,
> + unsigned int *bit)
> +{
> + unsigned int stride = regmap_get_reg_stride(data->map);
> +
> + *offset = (id / (stride * BITS_PER_BYTE)) * stride;
> + *bit = id % (stride * BITS_PER_BYTE);
> +}
> +
> +static int meson_reset_reset(struct reset_controller_dev *rcdev,
> + unsigned long id)
checkpatch --strict complains about the alignment here.
I'll fix this up when applying, no need to resend.
regards
Philipp