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-rw-r--r--miscutils/i2c_tools.c109
1 files changed, 64 insertions, 45 deletions
diff --git a/miscutils/i2c_tools.c b/miscutils/i2c_tools.c
index 30f606e8e..fc392d9dc 100644
--- a/miscutils/i2c_tools.c
+++ b/miscutils/i2c_tools.c
@@ -8,7 +8,6 @@
8 * 8 *
9 * Licensed under GPLv2 or later, see file LICENSE in this source tree. 9 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
10 */ 10 */
11
12//config:config I2CGET 11//config:config I2CGET
13//config: bool "i2cget (5.6 kb)" 12//config: bool "i2cget (5.6 kb)"
14//config: default y 13//config: default y
@@ -61,10 +60,8 @@
61 */ 60 */
62 61
63#include "libbb.h" 62#include "libbb.h"
64#include "common_bufsiz.h"
65 63
66#include <linux/i2c.h> 64#include <linux/i2c.h>
67#include <linux/i2c-dev.h>
68 65
69#define I2CDUMP_NUM_REGS 256 66#define I2CDUMP_NUM_REGS 256
70 67
@@ -72,6 +69,25 @@
72#define I2CDETECT_MODE_QUICK 1 69#define I2CDETECT_MODE_QUICK 1
73#define I2CDETECT_MODE_READ 2 70#define I2CDETECT_MODE_READ 2
74 71
72/* linux/i2c-dev.h from i2c-tools overwrites the one from linux uapi
73 * and defines symbols already defined by linux/i2c.h.
74 * Also, it defines a bunch of static inlines which we would rather NOT
75 * inline. What a mess.
76 * We need only these definitions from linux/i2c-dev.h:
77 */
78#define I2C_SLAVE 0x0703
79#define I2C_SLAVE_FORCE 0x0706
80#define I2C_FUNCS 0x0705
81#define I2C_PEC 0x0708
82#define I2C_SMBUS 0x0720
83struct i2c_smbus_ioctl_data {
84 __u8 read_write;
85 __u8 command;
86 __u32 size;
87 union i2c_smbus_data *data;
88};
89/* end linux/i2c-dev.h */
90
75/* 91/*
76 * This is needed for ioctl_or_perror_and_die() since it only accepts pointers. 92 * This is needed for ioctl_or_perror_and_die() since it only accepts pointers.
77 */ 93 */
@@ -438,19 +454,20 @@ static void confirm_action(int bus_addr, int mode, int data_addr, int pec)
438 454
439#if ENABLE_I2CGET 455#if ENABLE_I2CGET
440//usage:#define i2cget_trivial_usage 456//usage:#define i2cget_trivial_usage
441//usage: "[-f] [-y] BUS CHIP-ADDRESS [DATA-ADDRESS [MODE]]" 457//usage: "[-fy] BUS CHIP-ADDRESS [DATA-ADDRESS [MODE]]"
442//usage:#define i2cget_full_usage "\n\n" 458//usage:#define i2cget_full_usage "\n\n"
443//usage: "Read from I2C/SMBus chip registers\n" 459//usage: "Read from I2C/SMBus chip registers"
444//usage: "\n I2CBUS i2c bus number" 460//usage: "\n"
445//usage: "\n ADDRESS 0x03 - 0x77" 461//usage: "\n I2CBUS I2C bus number"
462//usage: "\n ADDRESS 0x03-0x77"
446//usage: "\nMODE is:" 463//usage: "\nMODE is:"
447//usage: "\n b read byte data (default)" 464//usage: "\n b Read byte data (default)"
448//usage: "\n w read word data" 465//usage: "\n w Read word data"
449//usage: "\n c write byte/read byte" 466//usage: "\n c Write byte/read byte"
450//usage: "\n Append p for SMBus PEC" 467//usage: "\n Append p for SMBus PEC"
451//usage: "\n" 468//usage: "\n"
452//usage: "\n -f force access" 469//usage: "\n -f Force access"
453//usage: "\n -y disable interactive mode" 470//usage: "\n -y Disable interactive mode"
454int i2cget_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; 471int i2cget_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
455int i2cget_main(int argc UNUSED_PARAM, char **argv) 472int i2cget_main(int argc UNUSED_PARAM, char **argv)
456{ 473{
@@ -520,23 +537,24 @@ int i2cget_main(int argc UNUSED_PARAM, char **argv)
520 537
521#if ENABLE_I2CSET 538#if ENABLE_I2CSET
522//usage:#define i2cset_trivial_usage 539//usage:#define i2cset_trivial_usage
523//usage: "[-f] [-y] [-m MASK] BUS CHIP-ADDR DATA-ADDR [VALUE] ... [MODE]" 540//usage: "[-fy] [-m MASK] BUS CHIP-ADDRESS DATA-ADDRESS [VALUE] ... [MODE]"
524//usage:#define i2cset_full_usage "\n\n" 541//usage:#define i2cset_full_usage "\n\n"
525//usage: "Set I2C registers\n" 542//usage: "Set I2C registers"
526//usage: "\n I2CBUS i2c bus number" 543//usage: "\n"
527//usage: "\n ADDRESS 0x03 - 0x77" 544//usage: "\n I2CBUS I2C bus number"
545//usage: "\n ADDRESS 0x03-0x77"
528//usage: "\nMODE is:" 546//usage: "\nMODE is:"
529//usage: "\n c byte, no value" 547//usage: "\n c Byte, no value"
530//usage: "\n b byte data (default)" 548//usage: "\n b Byte data (default)"
531//usage: "\n w word data" 549//usage: "\n w Word data"
532//usage: "\n i I2C block data" 550//usage: "\n i I2C block data"
533//usage: "\n s SMBus block data" 551//usage: "\n s SMBus block data"
534//usage: "\n Append p for SMBus PEC" 552//usage: "\n Append p for SMBus PEC"
535//usage: "\n" 553//usage: "\n"
536//usage: "\n -f force access" 554//usage: "\n -f Force access"
537//usage: "\n -y disable interactive mode" 555//usage: "\n -y Disable interactive mode"
538//usage: "\n -r read back and compare the result" 556//usage: "\n -r Read back and compare the result"
539//usage: "\n -m MASK mask specifying which bits to write" 557//usage: "\n -m MASK Mask specifying which bits to write"
540int i2cset_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; 558int i2cset_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
541int i2cset_main(int argc, char **argv) 559int i2cset_main(int argc, char **argv)
542{ 560{
@@ -879,23 +897,24 @@ static void dump_word_data(int bus_fd, unsigned first, unsigned last)
879} 897}
880 898
881//usage:#define i2cdump_trivial_usage 899//usage:#define i2cdump_trivial_usage
882//usage: "[-f] [-r FIRST-LAST] [-y] BUS ADDR [MODE]" 900//usage: "[-fy] [-r FIRST-LAST] BUS ADDR [MODE]"
883//usage:#define i2cdump_full_usage "\n\n" 901//usage:#define i2cdump_full_usage "\n\n"
884//usage: "Examine I2C registers\n" 902//usage: "Examine I2C registers"
885//usage: "\n I2CBUS i2c bus number" 903//usage: "\n"
886//usage: "\n ADDRESS 0x03 - 0x77" 904//usage: "\n I2CBUS I2C bus number"
905//usage: "\n ADDRESS 0x03-0x77"
887//usage: "\nMODE is:" 906//usage: "\nMODE is:"
888//usage: "\n b byte (default)" 907//usage: "\n b Byte (default)"
889//usage: "\n w word" 908//usage: "\n w Word"
890//usage: "\n W word on even register addresses" 909//usage: "\n W Word on even register addresses"
891//usage: "\n i I2C block" 910//usage: "\n i I2C block"
892//usage: "\n s SMBus block" 911//usage: "\n s SMBus block"
893//usage: "\n c consecutive byte" 912//usage: "\n c Consecutive byte"
894//usage: "\n Append p for SMBus PEC" 913//usage: "\n Append p for SMBus PEC"
895//usage: "\n" 914//usage: "\n"
896//usage: "\n -f force access" 915//usage: "\n -f Force access"
897//usage: "\n -y disable interactive mode" 916//usage: "\n -y Disable interactive mode"
898//usage: "\n -r limit the number of registers being accessed" 917//usage: "\n -r Limit the number of registers being accessed"
899int i2cdump_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; 918int i2cdump_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
900int i2cdump_main(int argc UNUSED_PARAM, char **argv) 919int i2cdump_main(int argc UNUSED_PARAM, char **argv)
901{ 920{
@@ -1188,18 +1207,17 @@ static void will_skip(const char *cmd)
1188} 1207}
1189 1208
1190//usage:#define i2cdetect_trivial_usage 1209//usage:#define i2cdetect_trivial_usage
1191//usage: "[-F I2CBUS] [-l] [-y] [-a] [-q|-r] I2CBUS [FIRST LAST]" 1210//usage: "-l | -F I2CBUS | [-ya] [-q|-r] I2CBUS [FIRST LAST]"
1192//usage:#define i2cdetect_full_usage "\n\n" 1211//usage:#define i2cdetect_full_usage "\n\n"
1193//usage: "Detect I2C chips.\n" 1212//usage: "Detect I2C chips"
1194//usage: "\n I2CBUS i2c bus number"
1195//usage: "\n FIRST and LAST limit the probing range"
1196//usage: "\n" 1213//usage: "\n"
1197//usage: "\n -l output list of installed busses" 1214//usage: "\n -l List installed buses"
1198//usage: "\n -y disable interactive mode" 1215//usage: "\n -F BUS# List functionalities on this bus"
1199//usage: "\n -a force scanning of non-regular addresses" 1216//usage: "\n -y Disable interactive mode"
1200//usage: "\n -q use smbus quick write commands for probing (default)" 1217//usage: "\n -a Force scanning of non-regular addresses"
1201//usage: "\n -r use smbus read byte commands for probing" 1218//usage: "\n -q Use smbus quick write commands for probing (default)"
1202//usage: "\n -F display list of functionalities" 1219//usage: "\n -r Use smbus read byte commands for probing"
1220//usage: "\n FIRST and LAST limit probing range"
1203int i2cdetect_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; 1221int i2cdetect_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
1204int i2cdetect_main(int argc UNUSED_PARAM, char **argv) 1222int i2cdetect_main(int argc UNUSED_PARAM, char **argv)
1205{ 1223{
@@ -1214,7 +1232,8 @@ int i2cdetect_main(int argc UNUSED_PARAM, char **argv)
1214 opts = getopt32(argv, "^" 1232 opts = getopt32(argv, "^"
1215 "yaqrFl" 1233 "yaqrFl"
1216 "\0" 1234 "\0"
1217 "q--r:r--q:"/*mutually exclusive*/ "?3"/*up to 3 args*/ 1235 "q--r:r--q:"/*mutually exclusive*/
1236 "?3"/*up to 3 args*/
1218 ); 1237 );
1219 argv += optind; 1238 argv += optind;
1220 1239
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-08-21 19:39:07 +0000