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);
46 int qcom_find_src_index(struct clk_hw *hw, const struct parent_map *map, u8 src)
48 int i, num_parents = __clk_get_num_parents(hw->clk);
50 for (i = 0; i < num_parents; i++)
51 if (src == map[i].src)
56 EXPORT_SYMBOL_GPL(qcom_find_src_index);
59 qcom_cc_map(struct platform_device *pdev, const struct qcom_cc_desc *desc)
63 struct device *dev = &pdev->dev;
65 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
66 base = devm_ioremap_resource(dev, res);
68 return ERR_CAST(base);
70 return devm_regmap_init_mmio(dev, base, desc->config);
72 EXPORT_SYMBOL_GPL(qcom_cc_map);
74 int qcom_cc_really_probe(struct platform_device *pdev,
75 const struct qcom_cc_desc *desc, struct regmap *regmap)
78 struct device *dev = &pdev->dev;
80 struct clk_onecell_data *data;
82 struct qcom_reset_controller *reset;
84 size_t num_clks = desc->num_clks;
85 struct clk_regmap **rclks = desc->clks;
87 cc = devm_kzalloc(dev, sizeof(*cc) + sizeof(*clks) * num_clks,
95 data->clk_num = num_clks;
97 for (i = 0; i < num_clks; i++) {
99 clks[i] = ERR_PTR(-ENOENT);
102 clk = devm_clk_register_regmap(dev, rclks[i]);
108 ret = of_clk_add_provider(dev->of_node, of_clk_src_onecell_get, data);
113 reset->rcdev.of_node = dev->of_node;
114 reset->rcdev.ops = &qcom_reset_ops;
115 reset->rcdev.owner = dev->driver->owner;
116 reset->rcdev.nr_resets = desc->num_resets;
117 reset->regmap = regmap;
118 reset->reset_map = desc->resets;
119 platform_set_drvdata(pdev, &reset->rcdev);
121 ret = reset_controller_register(&reset->rcdev);
123 of_clk_del_provider(dev->of_node);
127 EXPORT_SYMBOL_GPL(qcom_cc_really_probe);
129 int qcom_cc_probe(struct platform_device *pdev, const struct qcom_cc_desc *desc)
131 struct regmap *regmap;
133 regmap = qcom_cc_map(pdev, desc);
135 return PTR_ERR(regmap);
137 return qcom_cc_really_probe(pdev, desc, regmap);
139 EXPORT_SYMBOL_GPL(qcom_cc_probe);
141 void qcom_cc_remove(struct platform_device *pdev)
143 of_clk_del_provider(pdev->dev.of_node);
144 reset_controller_unregister(platform_get_drvdata(pdev));
146 EXPORT_SYMBOL_GPL(qcom_cc_remove);