2 * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.
4 * This software is licensed under the terms of the GNU General Public
5 * License version 2, as published by the Free Software Foundation, and
6 * may be copied, distributed, and modified under those terms.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
14 #include <linux/export.h>
15 #include <linux/regmap.h>
16 #include <linux/platform_device.h>
17 #include <linux/clk-provider.h>
18 #include <linux/reset-controller.h>
22 #include "clk-regmap.h"
26 struct qcom_reset_controller reset;
27 struct clk_onecell_data data;
32 struct freq_tbl *qcom_find_freq(const struct freq_tbl *f, unsigned long rate)
41 /* Default to our fastest rate */
44 EXPORT_SYMBOL_GPL(qcom_find_freq);
47 qcom_cc_map(struct platform_device *pdev, const struct qcom_cc_desc *desc)
51 struct device *dev = &pdev->dev;
53 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
54 base = devm_ioremap_resource(dev, res);
56 return ERR_CAST(base);
58 return devm_regmap_init_mmio(dev, base, desc->config);
60 EXPORT_SYMBOL_GPL(qcom_cc_map);
62 int qcom_cc_really_probe(struct platform_device *pdev,
63 const struct qcom_cc_desc *desc, struct regmap *regmap)
66 struct device *dev = &pdev->dev;
68 struct clk_onecell_data *data;
70 struct qcom_reset_controller *reset;
72 size_t num_clks = desc->num_clks;
73 struct clk_regmap **rclks = desc->clks;
75 cc = devm_kzalloc(dev, sizeof(*cc) + sizeof(*clks) * num_clks,
83 data->clk_num = num_clks;
85 for (i = 0; i < num_clks; i++) {
87 clks[i] = ERR_PTR(-ENOENT);
90 clk = devm_clk_register_regmap(dev, rclks[i]);
96 ret = of_clk_add_provider(dev->of_node, of_clk_src_onecell_get, data);
101 reset->rcdev.of_node = dev->of_node;
102 reset->rcdev.ops = &qcom_reset_ops;
103 reset->rcdev.owner = dev->driver->owner;
104 reset->rcdev.nr_resets = desc->num_resets;
105 reset->regmap = regmap;
106 reset->reset_map = desc->resets;
107 platform_set_drvdata(pdev, &reset->rcdev);
109 ret = reset_controller_register(&reset->rcdev);
111 of_clk_del_provider(dev->of_node);
115 EXPORT_SYMBOL_GPL(qcom_cc_really_probe);
117 int qcom_cc_probe(struct platform_device *pdev, const struct qcom_cc_desc *desc)
119 struct regmap *regmap;
121 regmap = qcom_cc_map(pdev, desc);
123 return PTR_ERR(regmap);
125 return qcom_cc_really_probe(pdev, desc, regmap);
127 EXPORT_SYMBOL_GPL(qcom_cc_probe);
129 void qcom_cc_remove(struct platform_device *pdev)
131 of_clk_del_provider(pdev->dev.of_node);
132 reset_controller_unregister(platform_get_drvdata(pdev));
134 EXPORT_SYMBOL_GPL(qcom_cc_remove);