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: NGrant Likely <grant.likely@secretlab.ca>

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: NWolfram Sang <w.sang@pengutronix.de>
Acked-by: NSean MacLennan <smaclennan@pikatech.com>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

drivers/of/of_i2c.c should include <linux/of_i2c.h> for the prototype
for of_register_i2c_devices().
Signed-off-by: NRobert P. J. Day <rpjday@crashcourse.ca>
Acked-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NJochen Friedrich <jochen@scram.de>
Acked-by: NStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

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: NJean Delvare <khali@linux-fr.org>
Signed-off-by: NAlessandro Zummo <a.zummo@towertech.it>
Acked-by: NKumar 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: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

After commit 585468e5
([POWERPC] i2c: Fix build breakage introduced by OF helpers)
drivers/of/of_i2c.c needs a MODULE_LICENSE.
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

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: NJochen Friedrich <jochen@scram.de>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

This implements various helpers to support OF bindings for the i2c
API.
Signed-off-by: NJochen Friedrich <jochen@scram.de>
Acked-by: NDavid S. Miller <davem@davemloft.net>
Acked-by: NStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: NPaul Mackerras <paulus@samba.org>