1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2021 Semihalf.
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/param.h>
29#include <sys/bus.h>
30#include <sys/kernel.h>
31#include <sys/module.h>
32#include <sys/mutex.h>
33#include <sys/rman.h>
34#include <machine/bus.h>
35
36#include <dev/fdt/simplebus.h>
37
38#include <dev/clk/clk.h>
39#include <dev/clk/clk_fixed.h>
40
41#include <dev/ofw/ofw_bus.h>
42#include <dev/ofw/ofw_bus_subr.h>
43
44#include "clkdev_if.h"
45#include "periph.h"
46
47#define NB_DEV_COUNT 17
48
49static struct clk_div_table a37x0_periph_clk_table_6 [] = {
50	{ .value = 1, .divider = 1 },
51	{ .value = 2, .divider = 2 },
52	{ .value = 3, .divider = 3 },
53	{ .value = 4, .divider = 4 },
54	{ .value = 5, .divider = 5 },
55	{ .value = 6, .divider = 6 },
56	{ .value = 0, .divider = 0 }
57};
58
59static struct clk_div_table a37x0_periph_clk_table_2 [] = {
60	{ .value = 0, .divider = 1 },
61	{ .value = 1, .divider = 2 },
62	{ .value = 2, .divider = 4 },
63	{ .value = 3, .divider = 1 }
64};
65
66static struct a37x0_periph_clknode_def a37x0_nb_devices [] = {
67	CLK_FULL_DD("mmc", 0, 2, 0, 0, DIV_SEL2, DIV_SEL2, 16, 13,
68	    "tbg_mux_mmc_50", "div1_mmc_51", "div2_mmc_52", "clk_mux_mmc_53"),
69	CLK_FULL_DD("sata_host", 1, 3, 2, 1, DIV_SEL2, DIV_SEL2, 10, 7,
70	    "tbg_sata_host_mmc_55", "div1_sata_host_56", "div2_sata_host_57",
71	    "clk_sata_host_mmc_58"),
72	CLK_FULL_DD("sec_at", 2, 6, 4, 2, DIV_SEL1, DIV_SEL1, 3, 0,
73	    "tbg_mux_sec_at_60", "div1_sec_at_61", "div2_sec_at_62",
74	    "clk_mux_sec_at_63"),
75	CLK_FULL_DD("sec_dap", 3, 7, 6, 3, DIV_SEL1, DIV_SEL1, 9, 6,
76	    "tbg_mux_sec_dap_65", "div1_sec_dap_67", "div2_sec_dap_68",
77	    "clk_mux_sec_dap_69"),
78	CLK_FULL_DD("tsecm", 4, 8, 8, 4, DIV_SEL1, DIV_SEL1, 15, 12,
79	    "tbg_mux_tsecm_71", "div1_tsecm_72", "div2_tsecm_73",
80	    "clk_mux_tsecm_74"),
81	CLK_FULL("setm_tmx", 5, 10, 10, 5, DIV_SEL1, 18,
82	    a37x0_periph_clk_table_6, "tbg_mux_setm_tmx_76",
83	    "div1_setm_tmx_77", "clk_mux_setm_tmx_78"),
84	CLK_FIXED("avs", 6, 11, 6, "mux_avs_80", "fixed1_avs_82"),
85	CLK_FULL_DD("pwm", 7, 13, 14, 8, DIV_SEL0, DIV_SEL0, 3, 0,
86	    "tbg_mux_pwm_83", "div1_pwm_84", "div2_pwm_85", "clk_mux_pwm_86"),
87	CLK_FULL_DD("sqf", 8, 12, 12, 7, DIV_SEL1, DIV_SEL1, 27, 14,
88	    "tbg_mux_sqf_88", "div1_sqf_89", "div2_sqf_90", "clk_mux_sqf_91"),
89	CLK_GATE("i2c_2", 9, 16, NULL),
90	CLK_GATE("i2c_1", 10, 17, NULL),
91	CLK_MUX_GATE_FIXED("ddr_phy", 11, 19, 10, "mux_ddr_phy_95",
92	    "gate_ddr_phy_96", "fixed1_ddr_phy_97"),
93	CLK_FULL_DD("ddr_fclk", 12, 21, 16, 11, DIV_SEL0, DIV_SEL0, 15, 12,
94	    "tbg_mux_ddr_fclk_99", "div1_ddr_fclk_100", "div2_ddr_fclk_101",
95	    "clk_mux_ddr_fclk_102"),
96	CLK_FULL("trace", 13, 22, 18, 12, DIV_SEL0, 20,
97	    a37x0_periph_clk_table_6, "tbg_mux_trace_104", "div1_trace_105",
98	    "clk_mux_trace_106"),
99	CLK_FULL("counter", 14, 23, 20, 13, DIV_SEL0, 23,
100	    a37x0_periph_clk_table_6, "tbg_mux_counter_108",
101	    "div1_counter_109", "clk_mux_counter_110"),
102	CLK_FULL_DD("eip97", 15, 26, 24, 9, DIV_SEL2, DIV_SEL2, 22, 19,
103	    "tbg_mux_eip97_112", "div1_eip97_113", "div2_eip97_114",
104	    "clk_mux_eip97_115"),
105	CLK_CPU("cpu", 16, 22, 15, DIV_SEL0, 28, a37x0_periph_clk_table_2,
106	    "tbg_mux_cpu_117", "div1_cpu_118"),
107};
108
109static struct ofw_compat_data a37x0_periph_compat_data [] = {
110	{ "marvell,armada-3700-periph-clock-nb",	1 },
111	{ NULL,						0 }
112};
113
114static int a37x0_nb_periph_clk_attach(device_t);
115static int a37x0_nb_periph_clk_probe(device_t);
116
117static device_method_t a37x0_nb_periph_clk_methods[] = {
118	DEVMETHOD(clkdev_device_unlock,		a37x0_periph_clk_device_unlock),
119	DEVMETHOD(clkdev_device_lock,		a37x0_periph_clk_device_lock),
120	DEVMETHOD(clkdev_read_4,		a37x0_periph_clk_read_4),
121
122	DEVMETHOD(device_attach,		a37x0_nb_periph_clk_attach),
123	DEVMETHOD(device_detach,		a37x0_periph_clk_detach),
124	DEVMETHOD(device_probe,			a37x0_nb_periph_clk_probe),
125
126	DEVMETHOD_END
127};
128
129static driver_t a37x0_nb_periph_driver = {
130	"a37x0_nb_periph_driver",
131	a37x0_nb_periph_clk_methods,
132	sizeof(struct a37x0_periph_clk_softc)
133};
134
135EARLY_DRIVER_MODULE(a37x0_nb_periph, simplebus, a37x0_nb_periph_driver, 0, 0,
136    BUS_PASS_TIMER + BUS_PASS_ORDER_LATE);
137
138static int
139a37x0_nb_periph_clk_attach(device_t dev)
140{
141	struct a37x0_periph_clk_softc *sc;
142
143	sc = device_get_softc(dev);
144	sc->devices = a37x0_nb_devices;
145	sc->device_count = NB_DEV_COUNT;
146
147	return (a37x0_periph_clk_attach(dev));
148}
149
150static int
151a37x0_nb_periph_clk_probe(device_t dev)
152{
153
154	if (!ofw_bus_status_okay(dev))
155		return (ENXIO);
156
157	if (!ofw_bus_search_compatible(dev,
158	    a37x0_periph_compat_data)->ocd_data)
159		return (ENXIO);
160
161	device_set_desc(dev, "marvell,armada-3700-nb-periph-clock");
162
163	return (BUS_PROBE_DEFAULT);
164}
165