clk/sunxi/clk-a10-codec.c

0001 // SPDX-License-Identifier: GPL-2.0-or-later
0002 /*
0003  * Copyright 2013 Emilio López
0004  *
0005  * Emilio López <emilio@elopez.com.ar>
0006  */
0007
0008 #include <linux/clk-provider.h>
0009 #include <linux/of.h>
0010 #include <linux/of_address.h>
0011
0012 #define SUN4I_CODEC_GATE    31
0013
0014 static void __init sun4i_codec_clk_setup(struct device_node *node)
0015 {
0016     struct clk *clk;
0017     const char *clk_name = node->name, *parent_name;
0018     void __iomem *reg;
0019
0020     reg = of_io_request_and_map(node, 0, of_node_full_name(node));
0021     if (IS_ERR(reg))
0022         return;
0023
0024     of_property_read_string(node, "clock-output-names", &clk_name);
0025     parent_name = of_clk_get_parent_name(node, 0);
0026
0027     clk = clk_register_gate(NULL, clk_name, parent_name,
0028                 CLK_SET_RATE_PARENT, reg,
0029                 SUN4I_CODEC_GATE, 0, NULL);
0030
0031     if (!IS_ERR(clk))
0032         of_clk_add_provider(node, of_clk_src_simple_get, clk);
0033 }
0034 CLK_OF_DECLARE(sun4i_codec, "allwinner,sun4i-a10-codec-clk",
0035            sun4i_codec_clk_setup);