Commit Graph

9 Commits

Author SHA1 Message Date
Jon Smirl
2526c151c3 drivers/of: Add the of_find_i2c_device_by_node function.
The of_find_i2c_device_by_node function allows you to follow a
reference in the device tree to an i2c device node and then locate
the linux device instantiated by the device tree. Example use: an I2S
bus driver finding the i2c_device instance for a codec described by
a device tree node.

This was waiting for Anton's i2c patches that were just added.

Signed-off-by: Jon Smirl <jonsmirl@gmail.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2009-01-09 15:49:06 -07:00
Anton Vorontsov
e6a437eba0 of/i2c: Fill the archdata for I2C devices
For I2C devices we just setting the node pointer in the archdata. This
is needed so that the I2C devices could find their OF tree nodes.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-03 21:03:56 +11:00
Jon Smirl
0721357d4d of: Format string bug in drivers/of/of_i2c.c
Format string bug.  Not exploitable, as this is only writable by root,
but worth fixing all the same.

See 326f6a5c9c

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-10-21 15:17:49 +11:00
Grant Likely
3f07af494d of: adapt of_find_i2c_driver() to be usable by SPI also
SPI has a similar problem as I2C in that it needs to determine an
appropriate modalias value for each device node.  This patch adapts
the of_i2c of_find_i2c_driver() function to be usable by of_spi also.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-07-25 22:25:13 -04:00
Wolfram Sang
11d579ee0a powerpc/mpc5200: Fix wrong 'no interrupt' handling in of_i2c
If an I2C device node does not specify an interrupt, the .irq member of the
board_info struct was set to -1. This caused crashes on following
irq_dispose_mappings. Leave it NO_IRQ as returned from irq_of_parse_and_map.
(Suggesting -1 as 'i2c-no-irq' used to be a bug in linux/i2c.h.)

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Sean MacLennan <smaclennan@pikatech.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-07-22 01:13:04 -06:00
Robert P. J. Day
f40987b64d OpenFirmware: Include <linux/of_i2c.h> from of_i2c.c.
drivers/of/of_i2c.c should include <linux/of_i2c.h> for the prototype
for of_register_i2c_devices().

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Acked-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Jochen Friedrich <jochen@scram.de>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2008-07-12 12:10:52 -06:00
Jean Delvare
f2eb432715 rtc-ds1374: rename device to just "ds1374"
Change the name of the device from "rtc-ds1374" to just "ds1374", to match
what all other RTC drivers do.  I seem to remember that this name was
chosen to avoid possible confusion with an older ds1374 driver, but that
driver was removed 3 months ago.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-06 11:29:10 -07:00
Adrian Bunk
138decf83f [POWERPC] drivers/of/of_i2c.c: Add MODULE_LICENSE
After commit 585468e5d5
([POWERPC] i2c: Fix build breakage introduced by OF helpers)
drivers/of/of_i2c.c needs a MODULE_LICENSE.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-04-24 20:58:01 +10:00
Jochen Friedrich
585468e5d5 [POWERPC] i2c: Fix build breakage introduced by OF helpers
Fix build breakage introduced in commit "[POWERPC] i2c: OF helpers for
the i2c API".  If i2c-core is compiled as a module, the helper needs
to be compiled as a module, as well.  Rename i2c.c to of_i2c.c to
avoid name space conflict.

[paulus@samba.org: Changed dependency from OF to PPC_OF to avoid
sparc{32,64} allmodconfig breakage.]

Signed-off-by: Jochen Friedrich <jochen@scram.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-04-20 13:03:35 +10:00