linux-toradex.git/drivers/misc/eeprom, branch v2.6.32.7

at24: Use timeout also for read

2009-11-26T08:22:33+00:00

Writes may take some time on EEPROMs, so for consecutive writes, we already
have a loop waiting for the EEPROM to become ready. Use such a loop for reads,
too, in case somebody wants to immediately read after a write. Detailed bug
report and test case can be found here:

http://article.gmane.org/gmane.linux.drivers.i2c/4660

Reported-by: Aleksandar Ivanov 
Signed-off-by: Wolfram Sang 
Tested-by: Aleksandar Ivanov 
Cc: David Brownell 
Signed-off-by: Jean Delvare

max6875: Discard obsolete detect method

2009-10-04T20:53:41+00:00

There is no point in implementing a detect callback for the MAX6875, as
this device can't be detected. It was there solely to handle "force"
module parameters to instantiate devices, but now we have a better sysfs
interface that can do the same.

So we can get rid of the ugly module parameters and the detect callback.
This basically divides the binary module size by 2.

Signed-off-by: Jean Delvare 
Acked-by: Wolfram Sang 
Acked-by: Ben Gardner

spi: prefix modalias with "spi:"

2009-09-23T14:39:43+00:00

This makes it consistent with other buses (platform, i2c, vio, ...).  I'm
not sure why we use the prefixes, but there must be a reason.

This was easy enough to do it, and I did it.

Signed-off-by: Anton Vorontsov 
Cc: David Brownell 
Cc: David Woodhouse 
Cc: Grant Likely 
Cc: Jean Delvare 
Cc: Ben Dooks 
Cc: Benjamin Herrenschmidt 
Cc: Dmitry Torokhov 
Cc: Samuel Ortiz 
Cc: "John W. Linville" 
Acked-by: Mike Frysinger 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

eeprom/at25: bugfix "not ready" timeout after write

2009-07-30T02:10:35+00:00

Under certain circumstances msleep(1) within the loop, which waits for the
EEPROM to be finished, might take longer than the timeout.  On the next
loop the status register might now return to be ready and therefore the
loop finishes.  The following check now tests if a timeout occurred and if
so returns an error although the device reported it was ready.

This fix replaces testing the occurrence of the timeout by testing the
"not ready" bit in the status register.

Signed-off-by: Sebastian Heutling 
Signed-off-by: David Brownell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

i2c/chips: Move max6875 to drivers/misc/eeprom

2009-06-15T16:01:49+00:00

This driver only reads the user EEPROM of that chip, so we can move it
to the eeprom-directory in order to further clean up (and later remove)
drivers/i2c/chips.

The Kconfig text was updated to match the current functionality,
dropping the meanwhile obsoleted parts.

Defconfigs have been adapted.

Signed-off-by: Wolfram Sang 
Acked-by: Ben Gardner 
Signed-off-by: Jean Delvare

at25: make input buffers of at25_*write() const

2009-04-13T22:04:32+00:00

| drivers/misc/eeprom/at25.c:358: warning: assignment from incompatible pointer type

Signed-off-by: Geert Uytterhoeven 
Cc: Kevin Hilman 
Cc: David Brownell 
Cc: Jean Delvare 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

at24: make input buffers of at24_*write() const

2009-04-13T22:04:32+00:00

| drivers/misc/eeprom/at24.c:508: warning: assignment from incompatible pointer type

Signed-off-by: Geert Uytterhoeven 
Cc: Kevin Hilman 
Cc: David Brownell 
Cc: Jean Delvare 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

memory_accessor: implement the new memory_accessor interfaces for SPI EEPROMs

2009-04-03T02:04:50+00:00

- Define new setup() hook to export the accessor
 - Implement accessor methods

Moves some error checking out of the sysfs interface code into the layer
below it, which is now shared by both sysfs and memory access code.

Signed-off-by: David Brownell 
Signed-off-by: Kevin Hilman 
Cc: Jean Delvare 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

memory_accessor: implement the new memory_accessor interface for I2C EEPROM

2009-04-03T02:04:50+00:00

In the case of at24, the platform code registers a 'setup' callback with
the at24_platform_data.  When the at24 driver detects an EEPROM, it fills
out the read and write functions of the memory_accessor and calls the
setup callback passing the memory_accessor struct.  The platform code can
then use the read/write functions in the memory_accessor struct for
reading and writing the EEPROM.

Signed-off-by: Kevin Hilman 
Cc: David Brownell 
Cc: Jean Delvare 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

eeprom/at24: Remove EXPERIMENTAL

2009-03-28T20:34:41+00:00

This driver has been widely used since inclusion and no problems have
been reported.

Signed-off-by: Wolfram Sang 
Cc: David Brownell 
Signed-off-by: Jean Delvare