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113 lines
2.6 KiB
113 lines
2.6 KiB
/* Copyright (c) 2011, 2013-2014, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/clk/msm-clk-provider.h>
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#include <linux/platform_device.h>
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#include <linux/of.h>
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#include <soc/qcom/msm-clock-controller.h>
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static int dummy_clk_reset(struct clk *clk, enum clk_reset_action action)
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{
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return 0;
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}
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static int dummy_clk_set_rate(struct clk *clk, unsigned long rate)
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{
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clk->rate = rate;
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return 0;
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}
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static int dummy_clk_set_max_rate(struct clk *clk, unsigned long rate)
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{
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return 0;
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}
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static int dummy_clk_set_flags(struct clk *clk, unsigned long flags)
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{
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return 0;
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}
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static unsigned long dummy_clk_get_rate(struct clk *clk)
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{
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return clk->rate;
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}
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static long dummy_clk_round_rate(struct clk *clk, unsigned long rate)
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{
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return rate;
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}
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const struct clk_ops clk_ops_dummy = {
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.reset = dummy_clk_reset,
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.set_rate = dummy_clk_set_rate,
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.set_max_rate = dummy_clk_set_max_rate,
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.set_flags = dummy_clk_set_flags,
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.get_rate = dummy_clk_get_rate,
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.round_rate = dummy_clk_round_rate,
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};
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struct clk dummy_clk = {
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.dbg_name = "dummy_clk",
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.ops = &clk_ops_dummy,
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CLK_INIT(dummy_clk),
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};
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static void *dummy_clk_dt_parser(struct device *dev, struct device_node *np)
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{
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struct clk *c;
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c = devm_kzalloc(dev, sizeof(*c), GFP_KERNEL);
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if (!c)
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return ERR_PTR(-ENOMEM);
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c->ops = &clk_ops_dummy;
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return msmclk_generic_clk_init(dev, np, c);
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}
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MSMCLK_PARSER(dummy_clk_dt_parser, "qcom,dummy-clk", 0);
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static struct clk *of_dummy_get(struct of_phandle_args *clkspec,
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void *data)
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{
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return &dummy_clk;
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}
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static const struct of_device_id msm_clock_dummy_match_table[] = {
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{ .compatible = "qcom,dummycc" },
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{}
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};
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static int msm_clock_dummy_probe(struct platform_device *pdev)
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{
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int ret;
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ret = of_clk_add_provider(pdev->dev.of_node, of_dummy_get, NULL);
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if (ret)
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return -ENOMEM;
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dev_info(&pdev->dev, "Registered DUMMY provider.\n");
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return ret;
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}
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static struct platform_driver msm_clock_dummy_driver = {
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.probe = msm_clock_dummy_probe,
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.driver = {
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.name = "clock-dummy",
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.of_match_table = msm_clock_dummy_match_table,
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.owner = THIS_MODULE,
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},
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};
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int __init msm_dummy_clk_init(void)
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{
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return platform_driver_register(&msm_clock_dummy_driver);
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}
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arch_initcall(msm_dummy_clk_init);
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