aboutsummaryrefslogtreecommitdiff
path: root/drivers/misc/pmic_core.c
blob: 5d62a56d346925c6cdd263648e81ac6e0bcbcd94 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
/*
 * Copyright (C) 2011 Samsung Electronics
 * Lukasz Majewski <l.majewski@samsung.com>
 *
 * (C) Copyright 2010
 * Stefano Babic, DENX Software Engineering, sbabic@denx.de
 *
 * (C) Copyright 2008-2009 Freescale Semiconductor, Inc.
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>
#include <linux/types.h>
#include <pmic.h>

static struct pmic pmic;

int check_reg(u32 reg)
{
	if (reg >= pmic.number_of_regs) {
		printf("<reg num> = %d is invalid. Should be less than %d\n",
		       reg, pmic.number_of_regs);
		return -1;
	}
	return 0;
}

int pmic_set_output(struct pmic *p, u32 reg, int out, int on)
{
	u32 val;

	if (pmic_reg_read(p, reg, &val))
		return -1;

	if (on)
		val |= out;
	else
		val &= ~out;

	if (pmic_reg_write(p, reg, val))
		return -1;

	return 0;
}

static void pmic_show_info(struct pmic *p)
{
	printf("PMIC: %s\n", p->name);
}

static void pmic_dump(struct pmic *p)
{
	int i, ret;
	u32 val;

	pmic_show_info(p);
	for (i = 0; i < p->number_of_regs; i++) {
		ret = pmic_reg_read(p, i, &val);
		if (ret)
			puts("PMIC: Registers dump failed\n");

		if (!(i % 8))
			printf("\n0x%02x: ", i);

		printf("%08x ", val);
	}
	puts("\n");
}

struct pmic *get_pmic(void)
{
	return &pmic;
}

int do_pmic(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	u32 ret, reg, val;
	char *cmd;

	struct pmic *p = &pmic;

	/* at least two arguments please */
	if (argc < 2)
		return cmd_usage(cmdtp);

	cmd = argv[1];
	if (strcmp(cmd, "dump") == 0) {
		pmic_dump(p);
		return 0;
	}

	if (strcmp(cmd, "read") == 0) {
		if (argc < 3)
			return cmd_usage(cmdtp);

		reg = simple_strtoul(argv[2], NULL, 16);

		ret = pmic_reg_read(p, reg, &val);

		if (ret)
			puts("PMIC: Register read failed\n");

		printf("\n0x%02x: 0x%08x\n", reg, val);

		return 0;
	}

	if (strcmp(cmd, "write") == 0) {
		if (argc < 4)
			return cmd_usage(cmdtp);

		reg = simple_strtoul(argv[2], NULL, 16);
		val = simple_strtoul(argv[3], NULL, 16);

		pmic_reg_write(p, reg, val);

		return 0;
	}

	/* No subcommand found */
	return 1;
}

U_BOOT_CMD(
	pmic,	CONFIG_SYS_MAXARGS, 1, do_pmic,
	"PMIC",
	"dump - dump PMIC registers\n"
	"pmic read <reg> - read register\n"
	"pmic write <reg> <value> - write register"
);