23 Sep, 2009
40 commits
-
CONFIG_RTC_HCTOSYS allows the kernel to read the system time from the RTC
at boot and resume, avoiding the need for userspace to do so.
Unfortunately userspace currently has no way to know whether this
configuration option is enabled and thus cannot sensibly choose whether to
run hwclock itself or not. Add a hctosys sysfs attribute which indicates
whether a given RTC set the system clock.Signed-off-by: Matthew Garrett
Acked-by: Alessandro Zummo
Cc: Mark Brown
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The sysfs interface to the RTC class drivers is currently undocumented.
Add some basic documentation defining the semantics of the fields.Signed-off-by: Matthew Garrett
Cc: Mark Brown
Acked-by: Alessandro Zummo
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix two new-ish runtime warnings in the at91rm9200 (etc) RTC:
Platform driver 'at91_rtc' needs updating - please use dev_pm_ops
... by just switchingIRQ 1/at91_rtc: IRQF_DISABLED is not guaranteed on shared IRQs
... no longer needed now that rtc_update_irq() changedSigned-off-by: David Brownell
Acked-by: Alessandro Zummo
Cc: Andrew Victor
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Error handling code following a kzalloc should free the allocated data.
The semantic match that finds the problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)//
@r exists@
local idexpression x;
statement S;
expression E;
identifier f,f1,l;
position p1,p2;
expression *ptr != NULL;
@@x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...);
...
if (x == NULL) S
}
(
x->f1 = E
|
(x->f1 == NULL || ...)
|
f(...,x->f1,...)
)
...>
(
return \(0\|\|ptr\);
|
return@p2 ...;
)@script:python@
p1 << r.p1;
p2 << r.p2;
@@print "* file: %s kmalloc %s return %s" % (p1[0].file,p1[0].line,p2[0].line)
//Signed-off-by: Julia Lawall
Cc: David Brownell
Cc: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This code is not executed before ds1307->rtc has been successfully
initialized to the result of calling rtc_device_register. Thus the test
that ds1307->rtc is not NULL is always true.A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)//
@match exists@
expression x, E;
statement S1, S2;
@@x = rtc_device_register(...)
... when != x = E
(
* if (x == NULL || ...) S1 else S2
|
* if (x == NULL && ...) S1 else S2
)
//Signed-off-by: Julia Lawall
Acked-by: Wolfram Sang
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
[ospite@studenti.unina.it: get pcap data from the parent device]
Signed-off-by: guiming zhuo
Signed-off-by: Daniel Ribeiro
Acked-by: Alessandro Zummo
Signed-off-by: Antonio Ospite
Cc: Mark Brown
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add support for RTC on the Freescale STMP37xx/378x platform.
Signed-off-by: dmitry pervushin
Signed-off-by: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The Blackfin RTC IRQ is an internal interrupt, so it makes no sense to
have it be shared.Signed-off-by: Michael Hennerich
Signed-off-by: Mike Frysinger
Signed-off-by: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Mike Frysinger
Cc: David Brownell
Signed-off-by: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This adds a driver for the RTC COH 901 331 found in the ST-Ericsson U300
series mobile platforms to the RTC subsystem. It integrates to the ARM
kernel support recently added to RMKs ARM tree and will be enabled in the
U300 defconfig in due time.Signed-off-by: Linus Walleij
Signed-off-by: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This adds a driver for Freescale's MXC internal real time clock modules.
The code is taken from Freescale's BSPs, but modified to fit the current
kernel coding mechanisms. Also, the PMIC external clock function was
removed for now to not add dead bits and keep the code as simple as
possible.[akpm@linux-foundation.org: make PIE_BIT_DEF[] static]
Signed-off-by: Daniel Mack
Cc: Sascha Hauer
Signed-off-by: Alessandro ZummoCc: Alessandro Zummo
Cc: Daniel Mack
Cc: Sascha Hauer
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off: Chris Verges
Cc: Christian Pellegrin
Cc: Alessandro Zummo
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add support for the Philips/NXP PCF2123 RTC.
Signed-off: Chris Verges
Tested-by: Chris Verges
Signed-off: Christian Pellegrin
Tested-by: Christian Pellegrin
Cc: Alessandro Zummo
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Support two new half-duplex SPI implementation restrictions, for links
that talk to TX-only or RX-only devices. (Existing half-duplex flavors
support both transfer directions, just not at the same time.)Move spi_async() into the spi.c core, and stop inlining it. Then make
that function perform error checks and reject messages that demand more
than the underlying controller can support.Based on a patch from Marek Szyprowski which did this only for the
bitbanged GPIO driver.Cc: Marek Szyprowski
Signed-off-by: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
tAdd adds McSPI support for OMAP4430 SDP platform. All the base addresses
are changed between OMAP1/2/3 and OMAP4. The fields of the resource
structures are filled at runtime to have McSPI support on OMAP4.Signed-off-by: Syed Rafiuddin
Acked-by: Kevin Hilman
Acked-by: Tony Lindgren
Acked-by: Santosh Shilimkar
Signed-off-by: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Previous restore was lazy and only restored CHxCONF when it was needed by
a specific chip select. This could cause occasional errors on an SPI bus
where multiple chip selects are in use.Signed-off-by: Tero Kristo
Signed-off-by: Kevin Hilman
Signed-off-by: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add context save/restore feature to McSPI driver.
Signed-off-by: Hemanth V
Reviewed-by: Aaro Koskinen
Signed-off-by: Kevin Hilman
Signed-off-by: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add SPI driver for Freescale STMP 3xxx-based boards
[dbrownell@users.sourceforge.net: cleanup sequence, spi_unregister_master]
Signed-off-by: dmitry pervushin
Signed-off-by: David Brownell
Cc: Kumar Gala
Cc: Timur Tabi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
With the update to the spi_bitbang driver, the transfer setup code is
being called more often, and thus is often re-doing calculations that have
been done before. The SPI layer allows our driver to add its own data to
each device so add a result cache to each device.This should also remove the problem where we where directly setting up
registers in the setup call which meant we might overwrite the state of an
extant transfer.,Signed-off-by: Ben Dooks
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Change the spi_s3c24xx driver to use dev_pm_ops to avoid the following
warning during probe:Platform driver 's3c2410-spi' needs updating - please use dev_pm_ops
Signed-off-by: Ben Dooks
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Change the use of (res->end - res->start) to use resource_size() to
get the size of the resource.Signed-off-by; Ben Dooks
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The driver includes where it should be including
and also includes and without using anything
from these.Signed-off-by: Ben Dooks
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix spelling of `automatically' in Documentation/spi/spi-summary.
Signed-off-by: Ben Dooks
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Register pxa2xx_spi earlier so it can be used with cpufreq
Signed-off-by: Daniel Ribeiro
Acked-by: Mark Brown
Cc: David Brownell
Cc: Eric Miao
Cc: Mark Brown
Cc: Daniel Ribeiro
Cc: Samuel Ortiz
Cc: Liam Girdwood
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
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 -
Make the code a little bit nicer, and shorter.
Signed-off-by: Anton Vorontsov
Cc: Kaiwan N Billimoria
Cc: David Brownell
Cc: David Woodhouse
Cc: Grant Likely
Cc: Jean Delvare
Cc: Ben Dooks
Cc: Benjamin Herrenschmidt
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Make the code a little bit nicer, and shorter.
Signed-off-by: Anton Vorontsov
Cc: Marc Pignat
Cc: David Brownell
Cc: David Woodhouse
Cc: Grant Likely
Cc: Jean Delvare
Cc: Ben Dooks
Cc: Benjamin Herrenschmidt
Acked-by: Marc Pignat
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The alias isn't needed any longer since the m25p80 driver converted to the
module device table matching.Signed-off-by: Anton Vorontsov
Cc: David Brownell
Cc: David Woodhouse
Cc: Grant Likely
Cc: Jean Delvare
Cc: Ben Dooks
Cc: Benjamin Herrenschmidt
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
With this patch spi drivers can use standard spi_driver.id_table and
MODULE_DEVICE_TABLE() mechanisms to bind against the devices. Just like
we do with I2C drivers.This is useful when a single driver supports several variants of devices
but it is not possible to detect them in run-time (like non-JEDEC chips
probing in drivers/mtd/devices/m25p80.c), and when platform_data usage is
overkill.This patch also makes life a lot easier on OpenFirmware platforms, since
with OF we extensively use proper device IDs in modaliases.Signed-off-by: Anton Vorontsov
Cc: David Brownell
Cc: David Woodhouse
Cc: Grant Likely
Cc: Jean Delvare
Cc: Ben Dooks
Cc: Benjamin Herrenschmidt
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This driver has been tested on i.MX1/i.MX27/i.MX35 with an AT25 type
EEPROM and on i.MX27/i.MX31 with a Freescale MC13783 PMIC.Signed-off-by: Sascha Hauer
Tested-by: Guennadi Liakhovetski
Acked-by: David Brownell
Cc: Andrea Paterniani
Cc: Russell King
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This makes the PL022 driver a default choice for any RealView and
Versatile boards plus the integrator IMPD1 which all contain the PL022
PrimeCell. This will make it a default choice if and only if a user
selects SPI support for their board.Signed-off-by: Linus Walleij
Signed-off-by: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add missing kernel-doc notation in spi.h for struct spi_master:
Warning(include/linux/spi/spi.h:289): No description found for parameter 'mode_bits'
Warning(include/linux/spi/spi.h:289): No description found for parameter 'flags'Signed-off-by: Randy Dunlap
Acked-by: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This adds a SPI driver for the SPI controller found in the IBM/AMCC
4xx PowerPC's.Signed-off-by: Stefan Roese
Signed-off-by: Wolfgang Ocker
Acked-by: Josh Boyer
Signed-off-by: Steven A. Falco
Signed-off-by: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Convert bit shifted values into BIT format
Signed-off-by: Jouni Hogander
Signed-off-by: Tony Lindgren
Signed-off-by: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This driver is in a non working state at the moment and will be replaced
by a bitbang driver which can also handle the newer i.MX variantsSigned-off-by: Sascha Hauer
Cc: Guennadi Liakhovetski
Acked-by: David Brownell
Acked-by: Andrea Paterniani
Cc: Russell King
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
We want to check for s_inode's existence, not inode's one (inode is always
valid in this function).This takes care of the following entry from Dan's list:
fs/ncpfs/ioctl.c +445 __ncp_ioctl(180) warning: variable derefenced before check 'inode'
Reported-by: Dan Carpenter
Cc: Julia Lawall
Signed-off-by: Bartlomiej Zolnierkiewicz
Cc: Petr Vandrovec
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Noticed-by: Joe Perches
Cc: Petr Vandrovec
Signed-off-by: Bartlomiej Zolnierkiewicz
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This function uses signed integers for the unix_date and local variables -
if a negative number is supplied and the leap-year condition is not met,
month will be 0, leading to a later read of day_n[-1]Signed-off-by: Roel Kluin
Cc: Petr Vandrovec
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
initramfs userspace likes to use this magic number.
Cc: Hugh Dickins
Signed-off-by: maximilian attems
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
