Messages in this thread Patch in this message | | | Subject | Re: [PATCH] I2C patches for 2.6.10 | Date | Fri, 7 Jan 2005 21:39:35 -0800 | From | Greg KH <> |
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ChangeSet 1.1938.445.1, 2004/12/15 11:29:09-08:00, johnpol@2ka.mipt.ru
[PATCH] w1: Documentation bits for generic w1 behaviour.
Documentation bits for generic w1 behaviour.
Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Documentation/w1/w1.generic | 19 +++++++++++++++++++ 1 files changed, 19 insertions(+)
diff -Nru a/Documentation/w1/w1.generic b/Documentation/w1/w1.generic --- /dev/null Wed Dec 31 16:00:00 196900 +++ b/Documentation/w1/w1.generic 2005-01-07 14:56:22 -08:00 @@ -0,0 +1,19 @@ +Any w1 device must be connected to w1 bus master device - for example +ds9490 usb device or w1-over-GPIO or RS232 converter. +Driver for w1 bus master must provide several functions(you can find +them in struct w1_bus_master definition in w1.h) which then will be +called by w1 core to send various commands over w1 bus(by default it is +reset and search commands). When some device is found on the bus, w1 core +checks if driver for it's family is loaded. +If driver is loaded w1 core creates new w1_slave object and registers it +in the system(creates some generic sysfs files(struct w1_family_ops in +w1_family.h), notifies any registered listener and so on...). +It is device driver's business to provide any communication method +upstream. +For example w1_therm driver(ds18?20 thermal sensor family driver) +provides temperature reading function which is bound to ->rbin() method +of the above w1_family_ops structure. +w1_smem - driver for simple 64bit memory cell provides ID reading +method. + +You can call above methods by reading appropriate sysfs files. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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