https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=189914
--- Comment #13 from [email protected] --- A commit references this bug: Author: ian Date: Wed May 22 21:06:10 UTC 2019 New revision: 348120 URL: https://svnweb.freebsd.org/changeset/base/348120 Log: Add a new 'tr' (transfer) mode to i2c(8) to support more i2c controllers. Some i2c controller hardware does not provide a way to do individual START, REPEAT-START and STOP actions on the i2c bus. Instead, they can only do a complete transfer as a single operation. Typically they can do either START-data-STOP or START-data-REPEATSTART-data-STOP. In the i2c driver framework, this corresponds to the iicbus_transfer method. In the userland interface they are initiated with the I2CRDWR ioctl command. These changes add a new 'tr' mode which can be specified with the '-m' command line option. This mode should work on all hardware; when an i2c controller driver doesn't directly support the iicbus_transfer method, code in the i2c driver framework uses the lower-level START/REPEAT/STOP methods to implement the transfer. After this new mode has gotten some testing on various hardware, the 'tr' mode should probably become the new default mode. PR: 189914 Changes: head/usr.sbin/i2c/i2c.8 head/usr.sbin/i2c/i2c.c -- You are receiving this mail because: You are the assignee for the bug. _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-bugs To unsubscribe, send any mail to "[email protected]"
