ad3a056982
[ Upstream commit 89ab396d712f7c91fe94f55cff23460426f5fc81 ] We should hold the reference returned by of_get_parent() and use it to call of_node_put() for refcount balance. Fixes:88e2da8124("clk: meson: aoclk: refactor common code into dedicated file") Fixes:6682bd4d44("clk: meson: factorise meson64 peripheral clock controller drivers") Fixes:bb6eddd1d2("clk: meson: meson8b: use the HHI syscon if available") Signed-off-by: Liang He <windhl@126.com> Link: https://lore.kernel.org/r/20220628141038.168383-1-windhl@126.com Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2019 BayLibre, SAS.
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* Author: Jerome Brunet <jbrunet@baylibre.com>
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*/
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#include <linux/clk-provider.h>
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#include <linux/of_device.h>
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#include <linux/platform_device.h>
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#include <linux/mfd/syscon.h>
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#include <linux/regmap.h>
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#include "clk-regmap.h"
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#include "meson-eeclk.h"
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int meson_eeclkc_probe(struct platform_device *pdev)
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{
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const struct meson_eeclkc_data *data;
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struct device *dev = &pdev->dev;
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struct device_node *np;
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struct regmap *map;
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int ret, i;
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data = of_device_get_match_data(dev);
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if (!data)
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return -EINVAL;
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/* Get the hhi system controller node */
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np = of_get_parent(dev->of_node);
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map = syscon_node_to_regmap(np);
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of_node_put(np);
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if (IS_ERR(map)) {
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dev_err(dev,
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"failed to get HHI regmap\n");
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return PTR_ERR(map);
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}
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if (data->init_count)
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regmap_multi_reg_write(map, data->init_regs, data->init_count);
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/* Populate regmap for the regmap backed clocks */
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for (i = 0; i < data->regmap_clk_num; i++)
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data->regmap_clks[i]->map = map;
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for (i = 0; i < data->hw_onecell_data->num; i++) {
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/* array might be sparse */
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if (!data->hw_onecell_data->hws[i])
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continue;
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ret = devm_clk_hw_register(dev, data->hw_onecell_data->hws[i]);
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if (ret) {
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dev_err(dev, "Clock registration failed\n");
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return ret;
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}
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}
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return devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get,
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data->hw_onecell_data);
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}
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