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Message-Id: <20230331-topic-oxnas-upstream-remove-v1-17-5bd58fd1dd1f@linaro.org>
Date: Fri, 31 Mar 2023 10:34:55 +0200
From: Neil Armstrong <neil.armstrong@...aro.org>
To: Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
soc@...nel.org, Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Russell King <linux@...linux.org.uk>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>,
Daniel Lezcano <daniel.lezcano@...aro.org>,
Thomas Gleixner <tglx@...utronix.de>,
Miquel Raynal <miquel.raynal@...tlin.com>,
Richard Weinberger <richard@....at>,
Vignesh Raghavendra <vigneshr@...com>,
Giuseppe Cavallaro <peppe.cavallaro@...com>,
Alexandre Torgue <alexandre.torgue@...s.st.com>,
Jose Abreu <joabreu@...opsys.com>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Maxime Coquelin <mcoquelin.stm32@...il.com>,
Linus Walleij <linus.walleij@...aro.org>,
Bartosz Golaszewski <brgl@...ev.pl>,
Sebastian Reichel <sre@...nel.org>,
Philipp Zabel <p.zabel@...gutronix.de>,
Marc Zyngier <maz@...nel.org>
Cc: linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
linux-mtd@...ts.infradead.org, netdev@...r.kernel.org,
linux-stm32@...md-mailman.stormreply.com,
linux-gpio@...r.kernel.org, linux-pm@...r.kernel.org,
Neil Armstrong <neil.armstrong@...aro.org>
Subject: [PATCH RFC 17/20] reset: oxnas: remove obsolete reset driver
Due to lack of maintainance and stall of development for a few years now,
and since no new features will ever be added upstream, remove support
for OX810 and OX820 peripheral reset.
Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
---
.../devicetree/bindings/reset/oxnas,reset.txt | 32 ------
drivers/reset/Kconfig | 3 -
drivers/reset/Makefile | 1 -
drivers/reset/reset-oxnas.c | 114 ---------------------
4 files changed, 150 deletions(-)
diff --git a/Documentation/devicetree/bindings/reset/oxnas,reset.txt b/Documentation/devicetree/bindings/reset/oxnas,reset.txt
deleted file mode 100644
index d27ccb5d04fc..000000000000
--- a/Documentation/devicetree/bindings/reset/oxnas,reset.txt
+++ /dev/null
@@ -1,32 +0,0 @@
-Oxford Semiconductor OXNAS SoC Family RESET Controller
-================================================
-
-Please also refer to reset.txt in this directory for common reset
-controller binding usage.
-
-Required properties:
-- compatible: For OX810SE, should be "oxsemi,ox810se-reset"
- For OX820, should be "oxsemi,ox820-reset"
-- #reset-cells: 1, see below
-
-Parent node should have the following properties :
-- compatible: For OX810SE, should be :
- "oxsemi,ox810se-sys-ctrl", "syscon", "simple-mfd"
- For OX820, should be :
- "oxsemi,ox820-sys-ctrl", "syscon", "simple-mfd"
-
-Reset indices are in dt-bindings include files :
-- For OX810SE: include/dt-bindings/reset/oxsemi,ox810se.h
-- For OX820: include/dt-bindings/reset/oxsemi,ox820.h
-
-example:
-
-sys: sys-ctrl@...000 {
- compatible = "oxsemi,ox810se-sys-ctrl", "syscon", "simple-mfd";
- reg = <0x000000 0x100000>;
-
- reset: reset-controller {
- compatible = "oxsemi,ox810se-reset";
- #reset-cells = <1>;
- };
-};
diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig
index 2a52c990d4fe..695419d888ab 100644
--- a/drivers/reset/Kconfig
+++ b/drivers/reset/Kconfig
@@ -143,9 +143,6 @@ config RESET_NPCM
This enables the reset controller driver for Nuvoton NPCM
BMC SoCs.
-config RESET_OXNAS
- bool
-
config RESET_PISTACHIO
bool "Pistachio Reset Driver"
depends on MIPS || COMPILE_TEST
diff --git a/drivers/reset/Makefile b/drivers/reset/Makefile
index 3e7e5fd633a8..cb1f229e20a6 100644
--- a/drivers/reset/Makefile
+++ b/drivers/reset/Makefile
@@ -20,7 +20,6 @@ obj-$(CONFIG_RESET_MCHP_SPARX5) += reset-microchip-sparx5.o
obj-$(CONFIG_RESET_MESON) += reset-meson.o
obj-$(CONFIG_RESET_MESON_AUDIO_ARB) += reset-meson-audio-arb.o
obj-$(CONFIG_RESET_NPCM) += reset-npcm.o
-obj-$(CONFIG_RESET_OXNAS) += reset-oxnas.o
obj-$(CONFIG_RESET_PISTACHIO) += reset-pistachio.o
obj-$(CONFIG_RESET_POLARFIRE_SOC) += reset-mpfs.o
obj-$(CONFIG_RESET_QCOM_AOSS) += reset-qcom-aoss.o
diff --git a/drivers/reset/reset-oxnas.c b/drivers/reset/reset-oxnas.c
deleted file mode 100644
index 8209f922dc16..000000000000
--- a/drivers/reset/reset-oxnas.c
+++ /dev/null
@@ -1,114 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Oxford Semiconductor Reset Controller driver
- *
- * Copyright (C) 2016 Neil Armstrong <narmstrong@...libre.com>
- * Copyright (C) 2014 Ma Haijun <mahaijuns@...il.com>
- * Copyright (C) 2009 Oxford Semiconductor Ltd
- */
-#include <linux/err.h>
-#include <linux/init.h>
-#include <linux/of.h>
-#include <linux/platform_device.h>
-#include <linux/reset-controller.h>
-#include <linux/slab.h>
-#include <linux/delay.h>
-#include <linux/types.h>
-#include <linux/regmap.h>
-#include <linux/mfd/syscon.h>
-
-/* Regmap offsets */
-#define RST_SET_REGOFFSET 0x34
-#define RST_CLR_REGOFFSET 0x38
-
-struct oxnas_reset {
- struct regmap *regmap;
- struct reset_controller_dev rcdev;
-};
-
-static int oxnas_reset_reset(struct reset_controller_dev *rcdev,
- unsigned long id)
-{
- struct oxnas_reset *data =
- container_of(rcdev, struct oxnas_reset, rcdev);
-
- regmap_write(data->regmap, RST_SET_REGOFFSET, BIT(id));
- msleep(50);
- regmap_write(data->regmap, RST_CLR_REGOFFSET, BIT(id));
-
- return 0;
-}
-
-static int oxnas_reset_assert(struct reset_controller_dev *rcdev,
- unsigned long id)
-{
- struct oxnas_reset *data =
- container_of(rcdev, struct oxnas_reset, rcdev);
-
- regmap_write(data->regmap, RST_SET_REGOFFSET, BIT(id));
-
- return 0;
-}
-
-static int oxnas_reset_deassert(struct reset_controller_dev *rcdev,
- unsigned long id)
-{
- struct oxnas_reset *data =
- container_of(rcdev, struct oxnas_reset, rcdev);
-
- regmap_write(data->regmap, RST_CLR_REGOFFSET, BIT(id));
-
- return 0;
-}
-
-static const struct reset_control_ops oxnas_reset_ops = {
- .reset = oxnas_reset_reset,
- .assert = oxnas_reset_assert,
- .deassert = oxnas_reset_deassert,
-};
-
-static const struct of_device_id oxnas_reset_dt_ids[] = {
- { .compatible = "oxsemi,ox810se-reset", },
- { .compatible = "oxsemi,ox820-reset", },
- { /* sentinel */ },
-};
-
-static int oxnas_reset_probe(struct platform_device *pdev)
-{
- struct oxnas_reset *data;
- struct device *parent;
-
- parent = pdev->dev.parent;
- if (!parent) {
- dev_err(&pdev->dev, "no parent\n");
- return -ENODEV;
- }
-
- data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
- if (!data)
- return -ENOMEM;
-
- data->regmap = syscon_node_to_regmap(parent->of_node);
- if (IS_ERR(data->regmap)) {
- dev_err(&pdev->dev, "failed to get parent regmap\n");
- return PTR_ERR(data->regmap);
- }
-
- platform_set_drvdata(pdev, data);
-
- data->rcdev.owner = THIS_MODULE;
- data->rcdev.nr_resets = 32;
- data->rcdev.ops = &oxnas_reset_ops;
- data->rcdev.of_node = pdev->dev.of_node;
-
- return devm_reset_controller_register(&pdev->dev, &data->rcdev);
-}
-
-static struct platform_driver oxnas_reset_driver = {
- .probe = oxnas_reset_probe,
- .driver = {
- .name = "oxnas-reset",
- .of_match_table = oxnas_reset_dt_ids,
- },
-};
-builtin_platform_driver(oxnas_reset_driver);
--
2.34.1
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