Merge tag 'x86-entry-2021-02-24' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux-2.6-microblaze.git] / drivers / clk / meson / meson-eeclk.c
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 #include <linux/module.h>
13
14 #include "clk-regmap.h"
15 #include "meson-eeclk.h"
16
17 int meson_eeclkc_probe(struct platform_device *pdev)
18 {
19         const struct meson_eeclkc_data *data;
20         struct device *dev = &pdev->dev;
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         map = syscon_node_to_regmap(of_get_parent(dev->of_node));
30         if (IS_ERR(map)) {
31                 dev_err(dev,
32                         "failed to get HHI regmap\n");
33                 return PTR_ERR(map);
34         }
35
36         if (data->init_count)
37                 regmap_multi_reg_write(map, data->init_regs, data->init_count);
38
39         /* Populate regmap for the regmap backed clocks */
40         for (i = 0; i < data->regmap_clk_num; i++)
41                 data->regmap_clks[i]->map = map;
42
43         for (i = 0; i < data->hw_onecell_data->num; i++) {
44                 /* array might be sparse */
45                 if (!data->hw_onecell_data->hws[i])
46                         continue;
47
48                 ret = devm_clk_hw_register(dev, data->hw_onecell_data->hws[i]);
49                 if (ret) {
50                         dev_err(dev, "Clock registration failed\n");
51                         return ret;
52                 }
53         }
54
55         return devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get,
56                                            data->hw_onecell_data);
57 }
58 EXPORT_SYMBOL_GPL(meson_eeclkc_probe);
59 MODULE_LICENSE("GPL v2");