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
|
/*
* (C) Copyright 2011 Freescale Semiconductor, Inc.
* Based on drivers/misc/fsl_pmic.c
*
* 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 <config.h>
#include <common.h>
#include <i2c.h>
#include <asm/errno.h>
#include <linux/types.h>
static int check_param(u32 reg, u32 write)
{
if (reg > 142 || write > 1) {
printf("<reg num> = %d is invalid. Should be less then 142\n",
reg);
return -1;
}
return 0;
}
static u32 pmic_reg(u32 reg, u32 val, u32 write)
{
unsigned char buf[1] = { 0 };
u32 ret_val = 0;
if (check_param(reg, write))
return -1;
if (write) {
buf[0] = (val) & 0xff;
if (i2c_write(CONFIG_SYS_DIALOG_PMIC_I2C_ADDR, reg, 1, buf, 1))
return -1;
} else {
if (i2c_read(CONFIG_SYS_DIALOG_PMIC_I2C_ADDR, reg, 1, buf, 1))
return -1;
ret_val = buf[0];
}
return ret_val;
}
void pmic_reg_write(u32 reg, u32 value)
{
pmic_reg(reg, value, 1);
}
u32 pmic_reg_read(u32 reg)
{
return pmic_reg(reg, 0, 0);
}
static void pmic_dump(int numregs)
{
u32 val;
int i;
for (i = 0; i < numregs; i++) {
val = pmic_reg_read(i);
if (!(i % 8))
printf("\n0x%02x: ", i);
printf("%02x ", val);
}
puts("\n");
}
int do_pmic(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
char *cmd;
int nregs;
u32 val;
/* at least two arguments please */
if (argc < 2)
return cmd_usage(cmdtp);
cmd = argv[1];
if (strcmp(cmd, "dump") == 0) {
if (argc < 3)
return cmd_usage(cmdtp);
nregs = simple_strtoul(argv[2], NULL, 16);
pmic_dump(nregs);
return 0;
}
if (strcmp(cmd, "write") == 0) {
if (argc < 4)
return cmd_usage(cmdtp);
nregs = simple_strtoul(argv[2], NULL, 16);
val = simple_strtoul(argv[3], NULL, 16);
pmic_reg_write(nregs, val);
return 0;
}
/* No subcommand found */
return 1;
}
U_BOOT_CMD(
pmic, CONFIG_SYS_MAXARGS, 1, do_pmic,
"Dialog PMIC (DA905x)",
"dump [numregs] dump registers\n"
"pmic write <reg> <value> - write register"
);
|
