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i2c: Get rid of the legacy binding model

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We converted all the legacy i2c drivers so we can finally get rid of
the legacy binding model. Hooray!

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: David Brownell <dbrownell@users.sourceforge.net>
This commit is contained in:
Jean Delvare
2009-06-19 16:58:18 +02:00
parent 352da9820e
commit 729d6dd571
4 changed files with 20 additions and 127 deletions
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16
Documentation/i2c/writing-clients
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@ -126,19 +126,9 @@ different) configuration information, as do drivers handling chip variants
that can't be distinguished by protocol probing, or which need some board
specific information to operate correctly.
Accordingly, the I2C stack now has two models for associating I2C devices
with their drivers: the original "legacy" model, and a newer one that's
fully compatible with the Linux 2.6 driver model. These models do not mix,
since the "legacy" model requires drivers to create "i2c_client" device
objects after SMBus style probing, while the Linux driver model expects
drivers to be given such device objects in their probe() routines.
The legacy model is deprecated now and will soon be removed, so we no
longer document it here.
Standard Driver Model Binding ("New Style")
-------------------------------------------
Device/Driver Binding
---------------------
System infrastructure, typically board-specific initialization code or
boot firmware, reports what I2C devices exist. For example, there may be
@ -201,7 +191,7 @@ a given I2C bus. This is for example the case of hardware monitoring
devices on a PC's SMBus. In that case, you may want to let your driver
detect supported devices automatically. This is how the legacy model
was working, and is now available as an extension to the standard
driver model (so that we can finally get rid of the legacy model.)
driver model.
You simply have to define a detect callback which will attempt to
identify supported devices (returning 0 for supported ones and -ENODEV