1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2023 Beckhoff Automation GmbH & Co. KG
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28 #include <sys/cdefs.h>
29
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/bus.h>
33
34 #include <dev/clk/clk.h>
35
36 #include <dev/clk/xilinx/zynqmp_clk_mux.h>
37
38 #include "clkdev_if.h"
39 #include "zynqmp_firmware_if.h"
40
41 struct zynqmp_clk_mux_softc {
42 device_t firmware;
43 uint32_t id;
44 };
45
46 static int
zynqmp_clk_mux_init(struct clknode * clk,device_t dev)47 zynqmp_clk_mux_init(struct clknode *clk, device_t dev)
48 {
49
50 clknode_init_parent_idx(clk, 0);
51 return (0);
52 }
53
54 static int
zynqmp_clk_mux_set_mux(struct clknode * clk,int idx)55 zynqmp_clk_mux_set_mux(struct clknode *clk, int idx)
56 {
57
58 printf("%s: called for %s\n", __func__, clknode_get_name(clk));
59 return (0);
60 }
61
62 static clknode_method_t zynqmp_clk_mux_clknode_methods[] = {
63 /* Device interface */
64 CLKNODEMETHOD(clknode_init, zynqmp_clk_mux_init),
65 CLKNODEMETHOD(clknode_set_mux, zynqmp_clk_mux_set_mux),
66 CLKNODEMETHOD_END
67 };
68
69 DEFINE_CLASS_1(zynqmp_clk_mux_clknode, zynqmp_clk_mux_clknode_class,
70 zynqmp_clk_mux_clknode_methods, sizeof(struct zynqmp_clk_mux_softc), clknode_class);
71
72 int
zynqmp_clk_mux_register(struct clkdom * clkdom,device_t fw,struct clknode_init_def * clkdef)73 zynqmp_clk_mux_register(struct clkdom *clkdom, device_t fw, struct clknode_init_def *clkdef)
74 {
75 struct clknode *clk;
76 struct zynqmp_clk_mux_softc *sc;
77 uint32_t fw_clk_id;
78
79 fw_clk_id = clkdef->id - 1;
80 clkdef->id = 0;
81 clk = clknode_create(clkdom, &zynqmp_clk_mux_clknode_class, clkdef);
82 if (clk == NULL)
83 return (1);
84 sc = clknode_get_softc(clk);
85 sc->id = fw_clk_id;
86 sc->firmware = fw;
87 clknode_register(clkdom, clk);
88 return (0);
89 }
90