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path: root/miscutils/i2c_tools.c
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2016-04-21libbb: make bb_common_bufsiz1 1 kbyte, add capability to use bss tail for itDenys Vlasenko
The config item is FEATURE_USE_BSS_TAIL. When it is off (default): function old new delta read_config 210 228 +18 doCommands 2279 2294 +15 ipneigh_list_or_flush 763 772 +9 ipaddr_list_or_flush 1256 1261 +5 display_process_list 1301 1306 +5 conspy_main 1378 1383 +5 do_lzo_compress 352 355 +3 do_lzo_decompress 565 567 +2 push 46 44 -2 inetd_main 2136 2134 -2 uevent_main 421 418 -3 addLines 97 92 -5 bb_common_bufsiz1 8193 1024 -7169 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 8/5 up/down: 62/-7181) Total: -7119 bytes text data bss dec hex filename 829850 4086 9080 843016 cdd08 busybox_old 829901 4086 1904 835891 cc133 busybox_unstripped FEATURE_USE_BSS_TAIL=y: read_config 210 228 +18 doCommands 2279 2294 +15 ipneigh_list_or_flush 763 772 +9 ipaddr_list_or_flush 1256 1261 +5 display_process_list 1301 1306 +5 conspy_main 1378 1383 +5 do_lzo_compress 352 355 +3 do_lzo_decompress 565 567 +2 inetd_main 2136 2134 -2 bb_common_bufsiz1 8193 - -8193 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 8/1 up/down: 62/-8195) Total: -8133 bytes text data bss dec hex filename 829850 4086 9080 843016 cdd08 busybox_old 829911 4086 880 834877 cbd3d busybox_unstripped FIXME: setup_common_bufsiz() calls are missing. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-11-01i2c_tools: suppress "'blen' may be used uninitialized in this function"Denys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-11-01i2cdump: display the numeric value for block read ioctl() errorsBartosz Golaszewski
This makes busybox i2cdump compatible with the upstream version, which also displays the numeric error value in case of a block read failure. Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-11-01i2cdump: bail-out if block read failsBartosz Golaszewski
We should bail-out if i2c_smbus_read_block_data() or i2c_smbus_read_i2c_block_data() return 0 or less. Add the missing check for the former and fix the existing for the latter. Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-11-01i2cdump: use I2C block mode for the 'i' mode parameterBartosz Golaszewski
Currently we're calling i2c_smbus_read_block_data() for both 'i' and 's' mode parameters. If the bus doesn't support SMBus block mode, then the i2c access ioctl() fails. Make i2cdump behave compatibly with upstream version by calling i2c_smbus_read_i2c_block_data() for I2C block. Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-11-01i2cdump: don't read block data in non-block modesBartosz Golaszewski
We currently read data twice in byte mode. Add a check to avoid calling i2c_smbus_read_i2c_block_data() if we're not in I2C or SMBus block mode. Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-11-01i2cdetect: coding style: add a space after 'for'Bartosz Golaszewski
Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-11-01i2cdetect: fix address skipping in auto modeBartosz Golaszewski
If the bus doesn't support SMBus Quick Write or Receive Byte commands and we're running in auto mode all addresses will be skipped resulting in an empty table being printed. This is caused by not restoring the auto mode after it's been changed for certain address ranges - we need an additional variable to hold the temporary state. Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-10-08join some common strings, -400 bytesDenys Vlasenko
function old new delta print_intel_cstates 499 511 +12 file_insert 355 364 +9 dpkg_main 2944 2940 -4 ifenslave_main 645 640 -5 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/2 up/down: 21/-9) Total: 12 bytes text data bss dec hex filename 937564 932 17676 956172 e970c busybox_old 937164 932 17676 955772 e957c busybox_unstripped Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-10-07build system: -fno-builtin-printfDenys Vlasenko
Benefits are: drops reference to out-of-line putchar(), fixes a few cases of failed string merge. function old new delta i2cdump_main 1488 1502 +14 sha256_process_block64 423 433 +10 sendmail_main 1183 1185 +2 list_table 1114 1116 +2 i2cdetect_main 1235 1237 +2 fdisk_main 2852 2854 +2 builtin_type 119 121 +2 unicode_conv_to_printable2 325 324 -1 scan_recursive 380 378 -2 mkfs_minix_main 2687 2684 -3 buffer_fill_and_print 178 169 -9 putchar 152 - -152 ------------------------------------------------------------------------------ (add/remove: 0/2 grow/shrink: 7/4 up/down: 34/-167) Total: -133 bytes text data bss dec hex filename 937788 932 17676 956396 e97ec busybox_old 937564 932 17676 956172 e970c busybox_unstripped Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-09-21i2c-tools: rename remaining definesBartosz Golaszewski
Rename the defines not present in linux UAPI headers to better reflect their purpose. Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-09-21i2c-tools: remove duplicate definitionsBartosz Golaszewski
Most applets include linux' user API headers instead of duplicating the definitions. Make it the case for i2c-tools as well. Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-06-07i2cdetect: use break instead of goto in list_i2c_busses_and_exit()Bartosz Golaszewski
Since there are now more statements in the if block after the while loop in list_i2c_busses_and_exit(), there's no need for a label. Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-06-07i2cdump: code reworkBartosz Golaszewski
Split i2cdump_main() into shorter functions. Simplify the code a bit. Make block an array of ints so that we can store negative results of read functions (fixes a bug found by Denys Vlasenko). Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-06-07i2cdetect: add a check for (mode == DETECT_MODE_AUTO)Bartosz Golaszewski
We should only warn the user about addresses to be skipped if (mode == DETECT_MODE_AUTO). Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-06-07i2cdetect: don't scan non-regular addresses without the '-a' optionBartosz Golaszewski
Addresses 0x00-0x02 shouldn't be scanned by default. This patch makes 'first' default to 0x03 and only enables lower addresses if '-a' option is passed Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-06-07i2cdetect: don't die on addresses already in use by driversBartosz Golaszewski
We can't use i2c_set_slave_addr() in i2cdetect, as we have to check for EBUSY after calling ioctl(I2C_SLAVE) and print 'UU' on busy addresses instead of bailing-out. While we're at it: reorder definitions of local vars in i2cdetect_main(). function old new delta i2cdetect_main 703 744 +41 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/0 up/down: 41/0) Total: 41 bytes text data bss dec hex filename 826097 4164 9584 839845 cd0a5 busybox_old 826145 4164 9584 839893 cd0d5 busybox_unstripped Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-05-11i2c-tools: only try /dev/i2c/* if opening /dev/i2c-* fails with ENOENTBartosz Golaszewski
Trying to access /dev/i2c/* on every error after opening /dev/i2c-* can mislead users who e.g. don't have root access. Instead of bailing-out with "permission denied" we currently print "no such file or directory". Fix it by trying open("/dev/i2c/%d") only if we got ENOENT. Upstream i2cdetect tries to get any info it can from /sys and /proc even when invoked by an unprivileged user, but we don't want to add unnecessary bloat. Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-05-11i2c-tools: fix 'i2cdetect -l'Bartosz Golaszewski
Calling 'i2cdetect -l' only displays usage and exits. Fix it by correctly parsing command-line arguments. Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-03-12libbb: introduce and use is_prefixed_with()Denys Vlasenko
function old new delta is_prefixed_with - 18 +18 complete_username 78 77 -1 man_main 737 735 -2 fsck_device 429 427 -2 unpack_ar_archive 80 76 -4 strip_unsafe_prefix 105 101 -4 singlemount 1054 1050 -4 rtc_adjtime_is_utc 90 86 -4 resolve_mount_spec 88 84 -4 parse_one_line 1029 1025 -4 parse_conf 1460 1456 -4 may_wakeup 83 79 -4 loadkmap_main 219 215 -4 get_irqs_from_stat 103 99 -4 get_header_cpio 913 909 -4 findfs_main 79 75 -4 fbsplash_main 1230 1226 -4 load_crontab 776 771 -5 expand_vars_to_list 1151 1146 -5 date_main 881 876 -5 skip_dev_pfx 30 24 -6 make_device 2199 2193 -6 complete_cmd_dir_file 773 767 -6 run_applet_and_exit 715 708 -7 uudecode_main 321 313 -8 pwdx_main 197 189 -8 execute 568 560 -8 i2cdetect_main 1186 1176 -10 procps_scan 1242 1230 -12 procps_read_smaps 1017 1005 -12 process_module 746 734 -12 patch_main 1903 1891 -12 nfsmount 3572 3560 -12 stack_machine 126 112 -14 process_timer_stats 449 435 -14 match_fstype 111 97 -14 do_ipaddr 1344 1330 -14 open_list_and_close 359 343 -16 get_header_tar 1795 1779 -16 prepend_new_eth_table 340 323 -17 fsck_main 1811 1794 -17 find_iface_state 56 38 -18 dnsd_main 1321 1303 -18 base_device 179 158 -21 find_keyword 104 82 -22 handle_incoming_and_exit 2785 2762 -23 parse_and_put_prompt 774 746 -28 modinfo 347 317 -30 find_action 204 171 -33 update_passwd 1470 1436 -34 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/49 up/down: 18/-540) Total: -522 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2015-02-10i2cget, i2cset, i2cdetect, i2cdump: new appletsBartosz Golaszewski
Add a minimal implementation of i2cget, i2cset, i2cdump and i2cdetect tools. Supports most features of upstream i2c-tools. function old new delta i2cdump_main - 1444 +1444 i2cset_main - 1239 +1239 i2cdetect_main - 611 +611 list_i2c_busses_and_exit - 532 +532 packed_usage 29975 30438 +463 i2cget_main - 380 +380 check_read_funcs - 140 +140 i2c_funcs_tab - 128 +128 confirm_action - 100 +100 i2c_dev_open - 57 +57 i2c_smbus_access - 44 +44 confirm_or_abort - 43 +43 check_funcs_test_end - 39 +39 i2c_smbus_read_word_data - 38 +38 i2c_smbus_read_byte_data - 38 +38 i2c_smbus_read_byte - 37 +37 i2c_set_slave_addr - 32 +32 applet_names 2480 2512 +32 adap_descs - 32 +32 i2c_set_pec - 29 +29 get_funcs_matrix - 21 +21 i2c_parse_data_addr - 18 +18 i2c_parse_bus_addr - 18 +18 i2c_bus_lookup - 18 +18 i2c_smbus_write_byte - 17 +17 applet_main 1440 1456 +16 will_skip - 14 +14 no_support - 11 +11 applet_nameofs 720 728 +8 applet_install_loc 180 182 +2 ------------------------------------------------------------------------------ (add/remove: 26/0 grow/shrink: 5/0 up/down: 5601/0) Total: 5601 bytes Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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