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"); 60