- 23 Sep, 2009 40 commits
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Michael Hennerich authored
Signed-off-by:
Michael Hennerich <michael.hennerich@analog.com> Signed-off-by:
Bryan Wu <cooloney@kernel.org> Signed-off-by:
Mike Frysinger <vapier@gentoo.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>
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Daniel Glöckner authored
Many gpio chips allow to generate interrupts when the value of a pin changes. This patch gives usermode application the opportunity to make use of this feature by calling poll(2) on the /sys/class/gpio/gpioN/value sysfs file. The edge to trigger can be set in the edge file in the same directory. Possible values are "none", "rising", "falling", and "both". Using level triggers is not possible with current sysfs since nothing changes the GPIO value (and the IRQ keeps triggering). Edge triggering will "just work". Note that if there was an event between read() and poll(), the poll() returns immediately. Also note that this version only supports true GPIO interrupts. Some later patch might be able to synthesize this behavior by timer-driven polling; some systems seem to need that. [dbrownell@users.sourceforge.net: align ids to 16 bit ids; whitespace] Signed-off-by:
Daniel Glöckner <dg@emlix.com> Signed-off-by:
David Brownell <dbrownell@users.sourceforge.net> Signed-off-by:
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H Hartley Sweeten authored
Drivers should be including <linux/gpio.h> not <asm/gpio.h>. Signed-off-by:
H Hartley Sweeten <hsweeten@visionengravers.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by:
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Alek Du authored
MAX7315 is pin and software compatible with PCA9534, so add it to the I2C device ID table of pca953x driver. http://www.datasheetcatalog.org/datasheet/maxim/MAX7315.pdfSigned-off-by:
Alek Du <alek.du@intel.com> Acked-by:
David Brownell <david-b@pacbell.net> Signed-off-by:
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Alek Du authored
The Langwell chip is the IO hub for Intel Moorestown platform which has a 64-pin gpio block device inside. It is exposed as a dedicated PCI device. We use it to control outside peripheral as well as to do IRQ demuxing. The gpio block uses MSI to send level type interrupt to IOAPIC. Signed-off-by:
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Marek Vasut authored
Cc: Eric Miao <eric.y.miao@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: David Brownell <david-b@pacbell.net> Cc: Samuel Ortiz <sameo@openedhand.com> Signed-off-by:
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Richard Röjfors authored
A GPIO driver for the Freescale MC33880 High/Low side switch Signed-off-by:
Richard Röjfors <richard.rojfors.ext@mocean-labs.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by:
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Jani Nikula authored
Commit 926b663c (gpiolib: allow GPIOs to be named) already provides naming on the chip level. This patch provides more flexibility by allowing multiple names where ever in sysfs on a per GPIO basis. Adapted from David Brownell's comments on a similar concept: http://lkml.org/lkml/2009/4/20/203. [randy.dunlap@oracle.com: fix build for CONFIG_GENERIC_GPIO=n] Signed-off-by:
Jani Nikula <ext-jani.1.nikula@nokia.com> Acked-by:
Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by:
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Matthew Garrett authored
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 <mjg@redhat.com> Acked-by:
Alessandro Zummo <a.zummo@towertech.it> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by:
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Matthew Garrett authored
The sysfs interface to the RTC class drivers is currently undocumented. Add some basic documentation defining the semantics of the fields. Signed-off-by:
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David Brownell authored
Fix two new-ish runtime warnings in the at91rm9200 (etc) RTC: Platform driver 'at91_rtc' needs updating - please use dev_pm_ops ... by just switching IRQ 1/at91_rtc: IRQF_DISABLED is not guaranteed on shared IRQs ... no longer needed now that rtc_update_irq() changed Signed-off-by:
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Julia Lawall authored
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/) // <smpl> @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 <... when != x when != if (...) { <+...x...+> } ( x->f1 = E | (x->f1 == NULL || ...) | f(...,x->f1,...) ) ...> ( return \(0\|<+...x...+>\|ptr\); | 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) // </smpl> Signed-off-by:
Julia Lawall <julia@diku.dk> Cc: David Brownell <david-b@pacbell.net> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by:
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Julia Lawall authored
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/) // <smpl> @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 ) // </smpl> Signed-off-by:
Wolfram Sang <w.sang@pengutronix.de> Cc: David Brownell <david-b@pacbell.net> Signed-off-by:
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Daniel Ribeiro authored
[ospite@studenti.unina.it: get pcap data from the parent device] Signed-off-by:
guiming zhuo <gmzhuo@gmail.com> Signed-off-by:
Daniel Ribeiro <drwyrm@gmail.com> Acked-by:
Antonio Ospite <ospite@studenti.unina.it> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by:
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Alessandro Zummo authored
Signed-off-by:
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dmitry pervushin authored
Add support for RTC on the Freescale STMP37xx/378x platform. Signed-off-by:
dmitry pervushin <dpervushin@embeddedalley.com> Signed-off-by:
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Michael Hennerich authored
The Blackfin RTC IRQ is an internal interrupt, so it makes no sense to have it be shared. Signed-off-by:
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Mike Frysinger authored
Signed-off-by:
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Linus Walleij authored
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 <linus.walleij@stericsson.com> Signed-off-by:
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Daniel Mack authored
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 <daniel@caiaq.de> Cc: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by:
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Chris Verges authored
Signed-off: Chris Verges <chrisv@cyberswitching.com> Cc: Christian Pellegrin <chripell@fsfe.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: David Brownell <david-b@pacbell.net> Signed-off-by:
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Chris Verges authored
Add support for the Philips/NXP PCF2123 RTC. Signed-off: Chris Verges <chrisv@cyberswitching.com> Tested-by:
Chris Verges <chrisv@cyberswitching.com> Signed-off: Christian Pellegrin <chripell@fsfe.org> Tested-by:
Christian Pellegrin <chripell@fsfe.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: David Brownell <david-b@pacbell.net> Signed-off-by:
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David Brownell authored
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 <m.szyprowski@samsung.com> Signed-off-by:
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Syed Rafiuddin authored
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 <rafiuddin.syed@ti.com> Acked-by:
Kevin Hilman <khilman@deeprootsystems.com> Acked-by:
Tony Lindgren <tony@atomide.com> Acked-by:
Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by:
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Tero Kristo authored
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 <tero.kristo@nokia.com> Signed-off-by:
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Hemanth V authored
Add context save/restore feature to McSPI driver. Signed-off-by:
Hemanth V <hemanthv@ti.com> Reviewed-by:
Aaro Koskinen <Aaro.Koskinen@nokia.com> Signed-off-by:
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dmitry pervushin authored
Add SPI driver for Freescale STMP 3xxx-based boards [dbrownell@users.sourceforge.net: cleanup sequence, spi_unregister_master] Signed-off-by:
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Ben Dooks authored
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 <ben@simtec.co.uk> Cc: David Brownell <david-b@pacbell.net> Signed-off-by:
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Ben Dooks authored
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:
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Ben Dooks authored
Change the use of (res->end - res->start) to use resource_size() to get the size of the resource. Signed-off-by; Ben Dooks <ben@simtec.co.uk> Cc: David Brownell <david-b@pacbell.net> Signed-off-by:
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Ben Dooks authored
The driver includes <asm/io.h> where it should be including <linux/io.h> and also includes <mach/hardware.h> and <asm/dma.h> without using anything from these. Signed-off-by:
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Ben Dooks authored
Fix spelling of `automatically' in Documentation/spi/spi-summary. Signed-off-by:
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Antonio Ospite authored
Register pxa2xx_spi earlier so it can be used with cpufreq Signed-off-by:
Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Eric Miao <eric.y.miao@gmail.com> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Daniel Ribeiro <drwyrm@gmail.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by:
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Anton Vorontsov authored
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 <avorontsov@ru.mvista.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Jean Delvare <khali@linux-fr.org> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Dmitry Torokhov <dtor@mail.ru> Cc: Samuel Ortiz <sameo@openedhand.com> Cc: "John W. Linville" <linville@tuxdriver.com> Acked-by:
Mike Frysinger <vapier.adi@gmail.com> Signed-off-by:
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Anton Vorontsov authored
Make the code a little bit nicer, and shorter. Signed-off-by:
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Anton Vorontsov authored
Make the code a little bit nicer, and shorter. Signed-off-by:
Marc Pignat <marc.pignat@hevs.ch> Signed-off-by:
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Anton Vorontsov authored
The alias isn't needed any longer since the m25p80 driver converted to the module device table matching. Signed-off-by:
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Anton Vorontsov authored
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:
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Sascha Hauer authored
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 <s.hauer@pengutronix.de> Tested-by:
Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by:
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linus.walleij@stericsson.com authored
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:
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