| 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 | |
| 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 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(node: dev->of_node); |
| 31 | map = syscon_node_to_regmap(np); |
| 32 | of_node_put(node: np); |
| 33 | if (IS_ERR(ptr: map)) { |
| 34 | dev_err(dev, |
| 35 | "failed to get HHI regmap\n"); |
| 36 | return PTR_ERR(ptr: map); |
| 37 | } |
| 38 | |
| 39 | if (data->init_count) |
| 40 | regmap_multi_reg_write(map, regs: data->init_regs, num_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, hw: 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, get: meson_clk_hw_get, data: (void *)&data->hw_clks); |
| 59 | } |
| 60 | EXPORT_SYMBOL_GPL(meson_eeclkc_probe); |
| 61 | MODULE_LICENSE("GPL v2"); |
| 62 |