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[95.114.61.215]) by smtp.googlemail.com with ESMTPSA id f13-20020a170906824d00b00726e108b566sm622871ejx.173.2022.06.28.05.45.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Jun 2022 05:45:23 -0700 (PDT) From: Martin Blumenstingl To: linux-phy@lists.infradead.org, devicetree@vger.kernel.org, p.zabel@pengutronix.de Cc: linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, vkoul@kernel.org, kishon@ti.com, rtanwar@maxlinear.com, Martin Blumenstingl Subject: [PATCH v1 8/9] reset: lantiq: Remove driver as it has been replaced by reset-intel-gw Date: Tue, 28 Jun 2022 14:44:40 +0200 Message-Id: <20220628124441.2385023-9-martin.blumenstingl@googlemail.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220628124441.2385023-1-martin.blumenstingl@googlemail.com> References: <20220628124441.2385023-1-martin.blumenstingl@googlemail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220628_054528_895060_A6C90B39 X-CRM114-Status: GOOD ( 19.63 ) X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org Now that we have replaced the reset-lantiq driver with the reset-intel-gw driver we can remove the old code. Signed-off-by: Martin Blumenstingl --- drivers/reset/Kconfig | 6 - drivers/reset/Makefile | 1 - drivers/reset/reset-lantiq.c | 210 ----------------------------------- 3 files changed, 217 deletions(-) delete mode 100644 drivers/reset/reset-lantiq.c diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig index fb49c465078f..22e28f5cf154 100644 --- a/drivers/reset/Kconfig +++ b/drivers/reset/Kconfig @@ -103,12 +103,6 @@ config RESET_K210 Say Y if you want to control reset signals provided by this controller. -config RESET_LANTIQ - bool "Lantiq XWAY Reset Driver" if COMPILE_TEST - default SOC_TYPE_XWAY - help - This enables the reset controller driver for Lantiq / Intel XWAY SoCs. - config RESET_LPC18XX bool "LPC18xx/43xx Reset Driver" if COMPILE_TEST default ARCH_LPC18XX diff --git a/drivers/reset/Makefile b/drivers/reset/Makefile index a80a9c4008a7..9cb37e7890f1 100644 --- a/drivers/reset/Makefile +++ b/drivers/reset/Makefile @@ -14,7 +14,6 @@ obj-$(CONFIG_RESET_HSDK) += reset-hsdk.o obj-$(CONFIG_RESET_IMX7) += reset-imx7.o obj-$(CONFIG_RESET_INTEL_GW) += reset-intel-gw.o obj-$(CONFIG_RESET_K210) += reset-k210.o -obj-$(CONFIG_RESET_LANTIQ) += reset-lantiq.o obj-$(CONFIG_RESET_LPC18XX) += reset-lpc18xx.o obj-$(CONFIG_RESET_MCHP_SPARX5) += reset-microchip-sparx5.o obj-$(CONFIG_RESET_MESON) += reset-meson.o diff --git a/drivers/reset/reset-lantiq.c b/drivers/reset/reset-lantiq.c deleted file mode 100644 index b936cfe85641..000000000000 --- a/drivers/reset/reset-lantiq.c +++ /dev/null @@ -1,210 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * - * Copyright (C) 2010 John Crispin - * Copyright (C) 2013-2015 Lantiq Beteiligungs-GmbH & Co.KG - * Copyright (C) 2016 Martin Blumenstingl - * Copyright (C) 2017 Hauke Mehrtens - */ - -#include -#include -#include -#include -#include -#include -#include -#include - -#define LANTIQ_RCU_RESET_TIMEOUT 10000 - -struct lantiq_rcu_reset_priv { - struct reset_controller_dev rcdev; - struct device *dev; - struct regmap *regmap; - u32 reset_offset; - u32 status_offset; -}; - -static struct lantiq_rcu_reset_priv *to_lantiq_rcu_reset_priv( - struct reset_controller_dev *rcdev) -{ - return container_of(rcdev, struct lantiq_rcu_reset_priv, rcdev); -} - -static int lantiq_rcu_reset_status(struct reset_controller_dev *rcdev, - unsigned long id) -{ - struct lantiq_rcu_reset_priv *priv = to_lantiq_rcu_reset_priv(rcdev); - unsigned int status = (id >> 8) & 0x1f; - u32 val; - int ret; - - ret = regmap_read(priv->regmap, priv->status_offset, &val); - if (ret) - return ret; - - return !!(val & BIT(status)); -} - -static int lantiq_rcu_reset_status_timeout(struct reset_controller_dev *rcdev, - unsigned long id, bool assert) -{ - int ret; - int retry = LANTIQ_RCU_RESET_TIMEOUT; - - do { - ret = lantiq_rcu_reset_status(rcdev, id); - if (ret < 0) - return ret; - if (ret == assert) - return 0; - usleep_range(20, 40); - } while (--retry); - - return -ETIMEDOUT; -} - -static int lantiq_rcu_reset_update(struct reset_controller_dev *rcdev, - unsigned long id, bool assert) -{ - struct lantiq_rcu_reset_priv *priv = to_lantiq_rcu_reset_priv(rcdev); - unsigned int set = id & 0x1f; - u32 val = assert ? BIT(set) : 0; - int ret; - - ret = regmap_update_bits(priv->regmap, priv->reset_offset, BIT(set), - val); - if (ret) { - dev_err(priv->dev, "Failed to set reset bit %u\n", set); - return ret; - } - - - ret = lantiq_rcu_reset_status_timeout(rcdev, id, assert); - if (ret) - dev_err(priv->dev, "Failed to %s bit %u\n", - assert ? "assert" : "deassert", set); - - return ret; -} - -static int lantiq_rcu_reset_assert(struct reset_controller_dev *rcdev, - unsigned long id) -{ - return lantiq_rcu_reset_update(rcdev, id, true); -} - -static int lantiq_rcu_reset_deassert(struct reset_controller_dev *rcdev, - unsigned long id) -{ - return lantiq_rcu_reset_update(rcdev, id, false); -} - -static int lantiq_rcu_reset_reset(struct reset_controller_dev *rcdev, - unsigned long id) -{ - int ret; - - ret = lantiq_rcu_reset_assert(rcdev, id); - if (ret) - return ret; - - return lantiq_rcu_reset_deassert(rcdev, id); -} - -static const struct reset_control_ops lantiq_rcu_reset_ops = { - .assert = lantiq_rcu_reset_assert, - .deassert = lantiq_rcu_reset_deassert, - .status = lantiq_rcu_reset_status, - .reset = lantiq_rcu_reset_reset, -}; - -static int lantiq_rcu_reset_of_parse(struct platform_device *pdev, - struct lantiq_rcu_reset_priv *priv) -{ - struct device *dev = &pdev->dev; - const __be32 *offset; - - priv->regmap = syscon_node_to_regmap(dev->of_node->parent); - if (IS_ERR(priv->regmap)) { - dev_err(&pdev->dev, "Failed to lookup RCU regmap\n"); - return PTR_ERR(priv->regmap); - } - - offset = of_get_address(dev->of_node, 0, NULL, NULL); - if (!offset) { - dev_err(&pdev->dev, "Failed to get RCU reset offset\n"); - return -ENOENT; - } - priv->reset_offset = __be32_to_cpu(*offset); - - offset = of_get_address(dev->of_node, 1, NULL, NULL); - if (!offset) { - dev_err(&pdev->dev, "Failed to get RCU status offset\n"); - return -ENOENT; - } - priv->status_offset = __be32_to_cpu(*offset); - - return 0; -} - -static int lantiq_rcu_reset_xlate(struct reset_controller_dev *rcdev, - const struct of_phandle_args *reset_spec) -{ - unsigned int status, set; - - set = reset_spec->args[0]; - status = reset_spec->args[1]; - - if (set >= rcdev->nr_resets || status >= rcdev->nr_resets) - return -EINVAL; - - return (status << 8) | set; -} - -static int lantiq_rcu_reset_probe(struct platform_device *pdev) -{ - struct lantiq_rcu_reset_priv *priv; - int err; - - priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); - if (!priv) - return -ENOMEM; - - priv->dev = &pdev->dev; - platform_set_drvdata(pdev, priv); - - err = lantiq_rcu_reset_of_parse(pdev, priv); - if (err) - return err; - - priv->rcdev.ops = &lantiq_rcu_reset_ops; - priv->rcdev.owner = THIS_MODULE; - priv->rcdev.of_node = pdev->dev.of_node; - priv->rcdev.nr_resets = 32; - priv->rcdev.of_xlate = lantiq_rcu_reset_xlate; - priv->rcdev.of_reset_n_cells = 2; - - return devm_reset_controller_register(&pdev->dev, &priv->rcdev); -} - -static const struct of_device_id lantiq_rcu_reset_dt_ids[] = { - { .compatible = "lantiq,danube-reset", }, - { .compatible = "lantiq,xrx200-reset", }, - { }, -}; -MODULE_DEVICE_TABLE(of, lantiq_rcu_reset_dt_ids); - -static struct platform_driver lantiq_rcu_reset_driver = { - .probe = lantiq_rcu_reset_probe, - .driver = { - .name = "lantiq-reset", - .of_match_table = lantiq_rcu_reset_dt_ids, - }, -}; -module_platform_driver(lantiq_rcu_reset_driver); - -MODULE_AUTHOR("Martin Blumenstingl "); -MODULE_DESCRIPTION("Lantiq XWAY RCU Reset Controller Driver"); -MODULE_LICENSE("GPL");