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c942fddf87
Based on 3 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version [author] [graeme] [gregory] [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema] [hk] [hemahk]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1105 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
90 lines
2.1 KiB
C
90 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright 2015 Maxime Ripard
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*
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* Maxime Ripard <maxime.ripard@free-electrons.com>
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*/
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#include <linux/clk-provider.h>
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#include <linux/io.h>
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#include <linux/of.h>
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#include <linux/of_address.h>
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#define SUN4I_A10_PLL3_GATE_BIT 31
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#define SUN4I_A10_PLL3_DIV_WIDTH 7
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#define SUN4I_A10_PLL3_DIV_SHIFT 0
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static DEFINE_SPINLOCK(sun4i_a10_pll3_lock);
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static void __init sun4i_a10_pll3_setup(struct device_node *node)
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{
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const char *clk_name = node->name, *parent;
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struct clk_multiplier *mult;
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struct clk_gate *gate;
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struct resource res;
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void __iomem *reg;
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struct clk *clk;
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int ret;
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of_property_read_string(node, "clock-output-names", &clk_name);
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parent = of_clk_get_parent_name(node, 0);
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reg = of_io_request_and_map(node, 0, of_node_full_name(node));
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if (IS_ERR(reg)) {
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pr_err("%s: Could not map the clock registers\n", clk_name);
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return;
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}
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gate = kzalloc(sizeof(*gate), GFP_KERNEL);
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if (!gate)
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goto err_unmap;
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gate->reg = reg;
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gate->bit_idx = SUN4I_A10_PLL3_GATE_BIT;
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gate->lock = &sun4i_a10_pll3_lock;
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mult = kzalloc(sizeof(*mult), GFP_KERNEL);
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if (!mult)
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goto err_free_gate;
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mult->reg = reg;
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mult->shift = SUN4I_A10_PLL3_DIV_SHIFT;
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mult->width = SUN4I_A10_PLL3_DIV_WIDTH;
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mult->lock = &sun4i_a10_pll3_lock;
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clk = clk_register_composite(NULL, clk_name,
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&parent, 1,
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NULL, NULL,
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&mult->hw, &clk_multiplier_ops,
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&gate->hw, &clk_gate_ops,
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0);
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if (IS_ERR(clk)) {
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pr_err("%s: Couldn't register the clock\n", clk_name);
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goto err_free_mult;
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}
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ret = of_clk_add_provider(node, of_clk_src_simple_get, clk);
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if (ret) {
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pr_err("%s: Couldn't register DT provider\n",
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clk_name);
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goto err_clk_unregister;
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}
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return;
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err_clk_unregister:
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clk_unregister_composite(clk);
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err_free_mult:
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kfree(mult);
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err_free_gate:
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kfree(gate);
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err_unmap:
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iounmap(reg);
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of_address_to_resource(node, 0, &res);
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release_mem_region(res.start, resource_size(&res));
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}
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CLK_OF_DECLARE(sun4i_a10_pll3, "allwinner,sun4i-a10-pll3-clk",
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sun4i_a10_pll3_setup);
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