16682bd4dSJerome Brunet // SPDX-License-Identifier: GPL-2.0 26682bd4dSJerome Brunet /* 36682bd4dSJerome Brunet * Copyright (c) 2019 BayLibre, SAS. 46682bd4dSJerome Brunet * Author: Jerome Brunet <jbrunet@baylibre.com> 56682bd4dSJerome Brunet */ 66682bd4dSJerome Brunet 76682bd4dSJerome Brunet #include <linux/clk-provider.h> 86682bd4dSJerome Brunet #include <linux/of_device.h> 96682bd4dSJerome Brunet #include <linux/platform_device.h> 106682bd4dSJerome Brunet #include <linux/mfd/syscon.h> 116682bd4dSJerome Brunet #include <linux/regmap.h> 126682bd4dSJerome Brunet 136682bd4dSJerome Brunet #include "clk-input.h" 146682bd4dSJerome Brunet #include "clk-regmap.h" 156682bd4dSJerome Brunet #include "meson-eeclk.h" 166682bd4dSJerome Brunet 176682bd4dSJerome Brunet int meson_eeclkc_probe(struct platform_device *pdev) 186682bd4dSJerome Brunet { 196682bd4dSJerome Brunet const struct meson_eeclkc_data *data; 206682bd4dSJerome Brunet struct device *dev = &pdev->dev; 216682bd4dSJerome Brunet struct clk_hw *input; 226682bd4dSJerome Brunet struct regmap *map; 236682bd4dSJerome Brunet int ret, i; 246682bd4dSJerome Brunet 256682bd4dSJerome Brunet data = of_device_get_match_data(dev); 266682bd4dSJerome Brunet if (!data) 276682bd4dSJerome Brunet return -EINVAL; 286682bd4dSJerome Brunet 296682bd4dSJerome Brunet /* Get the hhi system controller node */ 306682bd4dSJerome Brunet map = syscon_node_to_regmap(of_get_parent(dev->of_node)); 316682bd4dSJerome Brunet if (IS_ERR(map)) { 326682bd4dSJerome Brunet dev_err(dev, 336682bd4dSJerome Brunet "failed to get HHI regmap\n"); 346682bd4dSJerome Brunet return PTR_ERR(map); 356682bd4dSJerome Brunet } 366682bd4dSJerome Brunet 376682bd4dSJerome Brunet input = meson_clk_hw_register_input(dev, "xtal", IN_PREFIX "xtal", 0); 386682bd4dSJerome Brunet if (IS_ERR(input)) { 396682bd4dSJerome Brunet ret = PTR_ERR(input); 406682bd4dSJerome Brunet if (ret != -EPROBE_DEFER) 416682bd4dSJerome Brunet dev_err(dev, "failed to get input clock"); 426682bd4dSJerome Brunet return ret; 436682bd4dSJerome Brunet } 446682bd4dSJerome Brunet 456682bd4dSJerome Brunet /* Populate regmap for the regmap backed clocks */ 466682bd4dSJerome Brunet for (i = 0; i < data->regmap_clk_num; i++) 476682bd4dSJerome Brunet data->regmap_clks[i]->map = map; 486682bd4dSJerome Brunet 496682bd4dSJerome Brunet for (i = 0; i < data->hw_onecell_data->num; i++) { 506682bd4dSJerome Brunet /* array might be sparse */ 516682bd4dSJerome Brunet if (!data->hw_onecell_data->hws[i]) 526682bd4dSJerome Brunet continue; 536682bd4dSJerome Brunet 546682bd4dSJerome Brunet ret = devm_clk_hw_register(dev, data->hw_onecell_data->hws[i]); 556682bd4dSJerome Brunet if (ret) { 566682bd4dSJerome Brunet dev_err(dev, "Clock registration failed\n"); 576682bd4dSJerome Brunet return ret; 586682bd4dSJerome Brunet } 596682bd4dSJerome Brunet } 606682bd4dSJerome Brunet 616682bd4dSJerome Brunet return devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get, 626682bd4dSJerome Brunet data->hw_onecell_data); 636682bd4dSJerome Brunet } 64