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0707dda69d
When support for G781 was added, chips with ID 0x01 were found at I2C addresses 0x4c and 0x4d. The G781 datasheet (version 1.3 from October 2003) says that the device ID for G781-1 is 0x03, not 0x01. Also, the datasheet states that the chip at I2C address is G781 and the chip at I2C address 0x4d is G781-1. A G781-1 at I2C address 0x4d was now found to have a chip ID of 0x03 as suggested by the datasheet. Accept both 0x01 and 0x03 chip IDs at both addresses to ensure that all variants of G781 are detected properly. While at it, improve chip detection accuracy by reading two additional registers and ensuring that only expected bits are set in those registers. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.