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_device.h>
9#include <linux/platform_device.h>
10#include <linux/mfd/syscon.h>
11#include <linux/regmap.h>
12
13#include "clk-regmap.h"
14#include "meson-eeclk.h"
15
16int meson_eeclkc_probe(struct platform_device *pdev)
17{
18	const struct meson_eeclkc_data *data;
19	struct device *dev = &pdev->dev;
20	struct device_node *np;
21	struct regmap *map;
22	int ret, i;
23
24	data = of_device_get_match_data(dev);
25	if (!data)
26		return -EINVAL;
27
28	/* Get the hhi system controller node */
29	np = of_get_parent(dev->of_node);
30	map = syscon_node_to_regmap(np);
31	of_node_put(np);
32	if (IS_ERR(map)) {
33		dev_err(dev,
34			"failed to get HHI regmap\n");
35		return PTR_ERR(map);
36	}
37
38	if (data->init_count)
39		regmap_multi_reg_write(map, data->init_regs, data->init_count);
40
41	/* Populate regmap for the regmap backed clocks */
42	for (i = 0; i < data->regmap_clk_num; i++)
43		data->regmap_clks[i]->map = map;
44
45	for (i = 0; i < data->hw_onecell_data->num; i++) {
46		/* array might be sparse */
47		if (!data->hw_onecell_data->hws[i])
48			continue;
49
50		ret = devm_clk_hw_register(dev, data->hw_onecell_data->hws[i]);
51		if (ret) {
52			dev_err(dev, "Clock registration failed\n");
53			return ret;
54		}
55	}
56
57	return devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get,
58					   data->hw_onecell_data);
59}
60