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[PATCH] ppc64: SMU driver update & i2c support

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The SMU is the "system controller" chip used by Apple recent G5 machines
including the iMac G5.  It drives things like fans, i2c busses, real time
clock, etc...

The current kernel contains a very crude driver that doesn't do much more
than reading the real time clock synchronously.  This is a completely
rewritten driver that provides interrupt based command queuing, a userland
interface, and an i2c/smbus driver for accessing the devices hanging off
the SMU i2c busses like temperature sensors.  This driver is a basic block
for upcoming work on thermal control for those machines, among others.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Benjamin Herrenschmidt
2005-09-22 21:44:06 -07:00
committed by Linus Torvalds
parent 0f329075fb
commit 0365ba7fb1
15 changed files with 1624 additions and 169 deletions
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drivers/i2c/busses/Kconfig
+12
View File
@@ -245,6 +245,18 @@ config I2C_KEYWEST
This support is also available as a module. If so, the module
will be called i2c-keywest.
config I2C_PMAC_SMU
tristate "Powermac SMU I2C interface"
depends on I2C && PMAC_SMU
help
This supports the use of the I2C interface in the SMU
chip on recent Apple machines like the iMac G5. It is used
among others by the thermal control driver for those machines.
Say Y if you have such a machine.
This support is also available as a module. If so, the module
will be called i2c-pmac-smu.
config I2C_MPC
tristate "MPC107/824x/85xx/52xx"
depends on I2C && PPC32