1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (c) 2019 BayLibre, SAS.
4 * Author: Jerome Brunet <jbrunet@baylibre.com>
5 */
6
7#include <linux/clk-provider.h>
8#include <linux/of.h>
9#include <linux/platform_device.h>
10#include <linux/mfd/syscon.h>
11#include <linux/regmap.h>
12#include <linux/module.h>
13
14#include "clk-regmap.h"
15#include "meson-eeclk.h"
16
17int meson_eeclkc_probe(struct platform_device *pdev)
18{
19	const struct meson_eeclkc_data *data;
20	struct device *dev = &pdev->dev;
21	struct device_node *np;
22	struct regmap *map;
23	int ret, i;
24
25	data = of_device_get_match_data(dev);
26	if (!data)
27		return -EINVAL;
28
29	/* Get the hhi system controller node */
30	np = of_get_parent(dev->of_node);
31	map = syscon_node_to_regmap(np);
32	of_node_put(np);
33	if (IS_ERR(map)) {
34		dev_err(dev,
35			"failed to get HHI regmap\n");
36		return PTR_ERR(map);
37	}
38
39	if (data->init_count)
40		regmap_multi_reg_write(map, data->init_regs, data->init_count);
41
42	/* Populate regmap for the regmap backed clocks */
43	for (i = 0; i < data->regmap_clk_num; i++)
44		data->regmap_clks[i]->map = map;
45
46	for (i = 0; i < data->hw_clks.num; i++) {
47		/* array might be sparse */
48		if (!data->hw_clks.hws[i])
49			continue;
50
51		ret = devm_clk_hw_register(dev, data->hw_clks.hws[i]);
52		if (ret) {
53			dev_err(dev, "Clock registration failed\n");
54			return ret;
55		}
56	}
57
58	return devm_of_clk_add_hw_provider(dev, meson_clk_hw_get, (void *)&data->hw_clks);
59}
60EXPORT_SYMBOL_GPL(meson_eeclkc_probe);
61MODULE_LICENSE("GPL v2");
62