- 18 Jun, 2009 18 commits
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Wolfgang Grandegger authored
Add support for the Epson RX-8025SA/NB RTC chips. It includes support for alarms, periodic interrupts (1 Hz) and clock precision adjustment. For clock precision adjustment, the SYSFS file "clock_adjust_ppb" gets created in "/sys/class/rtc/rtcX/device". It permits to set and get the clock adjustment in ppb (parts per billion), e.g.: # echo -183000 > /sys/class/rtc/rtc0/device/clock_adjust_ppb # cat /sys/class/rtc/rtc0/device/clock_adjust_ppb -183000 This allows to compensate temperature dependent clock drifts. According to the RX8025 SA/NB application manual the frequency and temperature characteristics can be approximated using the following equation: df = a * (ut - t)**2 df: Frequency deviation in any temperature a : Coefficient = (-35 +-5) * 10**-9 ut: Ultimate temperature in degree = +25 +-5 degree t : Any temperature in degree Signed-off-by:
Wolfgang Grandegger <wg@grandegger.com> Signed-off-by:
Sergei Poselenov <sposelenov@emcraft.com> Signed-off-by:
Yuri Tikhonov <yur@emcraft.com> Signed-off-by:
Dmitry Rakhchev <rda@emcraft.com> Signed-off-by:
Matthias Fuchs <matthias.fuchs@esd.eu> Acked-by:
Jean Delvare <khali@linux-fr.org> Signed-off-by:
Alessandro Zummo <a.zummo@towertech.it> 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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Wolfram Sang authored
Add ds3231 variant. For that, the BBSQI bit position was changed from a simple define into a lookup-array as it differs. This also removes writing to an unused bit in case of the ds1337. Signed-off-by:
Wolfram Sang <w.sang@pengutronix.de> Acked-by:
David Brownell <dbrownell@users.sourceforge.net> Signed-off-by:
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Joakim Tjernlund authored
Extend the ds1307 driver to support ds1388 too. Signed-off-by:
Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by:
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Torsten Ertbjerg Rasmussen authored
The RTC driver for ds1742 / ds1743 uses a static nvram attribute. This patch replaces this static attribute with one nvram attribute for each ds174x registered. The nvram size is not the same for all types of ds174x. The nvram size is accessible as the file size of the nvram attribute in sysfs. With only a single nvram attribute, this file size will be incorrect if more than one type of ds174x is present on a system. See the comment in the removed code below. This patch have been tested with linux-2.6.28 and linux-2.6.29-rc5/6 on a custom board with one ds1743. Signed-off-by:
Torsten Ertbjerg Rasmussen <ertbjerg@gmail.com> Signed-off-by:
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Jiri Pirko authored
Buffer needs not be dma-safe, not rx data length. Signed-off-by:
Jiri Pirko <jpirko@redhat.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by:
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Daniel Ribeiro authored
Commit a7bb3909 ("spi: pxa2xx_spi: introduce chipselect GPIO to simplify the common cases") introduces chipselect GPIO, and configures the CS polarity using SPI_CS_HIGH spi->mode flag. Add SPI_CS_HIGH to the allowed modes. Signed-off-by:
Daniel Ribeiro <drwyrm@gmail.com> Signed-off-by:
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Anton Vorontsov authored
mpc52xx_psc_spi driver is the last user of the legacy activate_cs and deactivate_cs callbacks, so convert the driver to the cs_control hook and remove the legacy callbacks from fsl_spi_platform_data struct. Signed-off-by:
Anton Vorontsov <avorontsov@ru.mvista.com> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by:
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David Brownell authored
Move some common spi_setup() error checks into the SPI framework from the spi_master controller drivers: - Add a new "mode_bits" field to spi_master - Use that in spi_setup to validate the spi->mode value being requested. Setting this new field is now mandatory for any controller supporting more than vanilla SPI_MODE_0. - Update all spi_master drivers to: * Initialize that field * Remove current spi_setup() checks using that value. This is a net minor code shrink. Signed-off-by: -
David Brownell authored
Start moving some spi_setup() functionality into the SPI core from the various spi_master controller drivers: - Make that function stop being an inline; - Move two common idioms from drivers into that new function: * Default bits_per_word to 8 if that field isn't set * Issue a standardized dev_dbg() message This is a net minor source code shrink, and supports enhancments found in some follow-up patches. Signed-off-by: -
Roel Kluin authored
bfin_spi_flush() returns limit, which reaches -1 upon timeout. but in function bfin_spi_pump_transfers() it is compared with 0. Signed-off-by:
Roel Kluin <roel.kluin@gmail.com> Acked-by:
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Stefani Seibold authored
An update for the "Process-Specific Subdirectories" section to reflect the changes till kernel 2.6.30. Signed-off-by:
Stefani Seibold <stefani@seibold.net> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by:
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Cyrill Gorcunov authored
Instead of kmalloc+memset better use straight kzalloc Signed-off-by:
Cyrill Gorcunov <gorcunov@openvz.org> Reviewed-by:
WANG Cong <xiyou.wangcong@gmail.com> Acked-by:
Vivek Goyal <vgoyal@redhat.com> Signed-off-by:
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Michal Simek authored
CHECK fs/proc/proc_devtree.c fs/proc/proc_devtree.c:197:14: warning: Using plain integer as NULL pointer fs/proc/proc_devtree.c:203:34: warning: Using plain integer as NULL pointer fs/proc/proc_devtree.c:210:14: warning: Using plain integer as NULL pointer fs/proc/proc_devtree.c:223:26: warning: Using plain integer as NULL pointer fs/proc/proc_devtree.c:226:14: warning: Using plain integer as NULL pointer Signed-off-by:
Michal Simek <monstr@monstr.eu> Cc: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by:
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Davide Libenzi authored
This fixes a regression in 2.6.30. I unfortunately accepted a patch time ago, to drop the "current" usage from possible IRQ context, w/out proper thought over it. The patch switched to using the CPU id by bounding the nested call callback with a get_cpu()/put_cpu(). Unfortunately the ep_call_nested() function can be called with a callback that grabs sleepy locks (from own f_op->poll()), that results in epic fails. The following patch uses the proper "context" depending on the path where it is called, and on the kind of callback. This has been reported by Stefan Richter, that has also verified the patch is his previously failing environment. Signed-off-by:
Davide Libenzi <davidel@xmailserver.org> Reported-by:
Stefan Richter <stefanr@s5r6.in-berlin.de> Cc: <stable@kernel.org> Signed-off-by:
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Andrew Morton authored
Tony hasn't been heard from in 18 months and people keep sending him things. Cc: Joe Perches <joe@perches.com> Cc: Krzysztof Helt <krzysztof.h1@poczta.fm> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by:
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Keika Kobayashi authored
Export statistics for softirq in /proc/softirqs and /proc/stat. 1. /proc/softirqs Implement /proc/softirqs which shows the number of softirq for each CPU like /proc/interrupts. 2. /proc/stat Add the "softirq" line to /proc/stat. This line shows the number of softirq for all cpu. The first column is the total of all softirqs and each subsequent column is the total for particular softirq. [kosaki.motohiro@jp.fujitsu.com: remove redundant for_each_possible_cpu() loop] Signed-off-by:
Keika Kobayashi <kobayashi.kk@ncos.nec.co.jp> Reviewed-by:
Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Eric Dumazet <dada1@cosmosbay.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by:
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by:
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Robin Getz authored
This adds IRQF_SAMPLE_RANDOM to the feature-removal (deprecated) list since most of the IRQF_SAMPLE_RANDOM users are technically bogus as entropy sources in the kernel's current entropy model. This was discussed on the lkml the past few days, which started here: http://lkml.org/lkml/2009/4/6/283Signed-off-by:
Robin Getz <rgetz@blackfin.uclinux.org> Cc: Theodore Ts'o <tytso@mit.edu> Cc: Matt Mackall <mpm@selenic.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
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Keika Kobayashi authored
Statistics for softirq doesn't exist. It will be helpful like statistics for interrupts. This patch introduces counting the number of softirq, which will be exported in /proc/softirqs. When softirq handler consumes much CPU time, /proc/stat is like the following. $ while :; do cat /proc/stat | head -n1 ; sleep 10 ; done cpu 88 0 408 739665 583 28 2 0 0 cpu 450 0 1090 740970 594 28 1294 0 0 ^^^^ softirq In such a situation, /proc/softirqs shows us which softirq handler is invoked. We can see the increase rate of softirqs. <before> $ cat /proc/softirqs CPU0 CPU1 CPU2 CPU3 HI 0 0 0 0 TIMER 462850 462805 462782 462718 NET_TX 0 0 0 365 NET_RX 2472 2 2 40 BLOCK 0 0 381 1164 TASKLET 0 0 0 224 SCHED 462654 462689 462698 462427 RCU 3046 2423 3367 3173 <after> $ cat /proc/softirqs CPU0 CPU1 CPU2 CPU3 HI 0 0 0 0 TIMER 463361 465077 465056 464991 NET_TX 53 0 1 365 NET_RX 3757 2 2 40 BLOCK 0 0 398 1170 TASKLET 0 0 0 224 SCHED 463074 464318 464612 463330 RCU 3505 2948 3947 3673 When CPU TIME of softirq is high, the rates of increase is the following. TIMER : 220/sec : CPU1-3 NET_TX : 5/sec : CPU0 NET_RX : 120/sec : CPU0 SCHED : 40-200/sec : all CPU RCU : 45-58/sec : all CPU The rates of increase in an idle mode is the following. TIMER : 250/sec SCHED : 250/sec RCU : 2/sec It seems many softirqs for receiving packets and rcu are invoked. This gives us help for checking system. Signed-off-by:
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- 17 Jun, 2009 22 commits
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Matthew Wilcox authored
ia64 was assigning resources to root busses after allocations had been made for child busses. Calling pcibios_setup_root_windows() from pcibios_fixup_bus() solves this problem by assigning the resources to the root bus before child busses are scanned. Signed-off-by:
Matthew Wilcox <willy@linux.intel.com> Tested-by:
Andrew Patterson <andrew.patterson@hp.com> Signed-off-by:
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Matthew Wilcox authored
Instead of open-coding pci_find_parent_resource and request_resource, just call pci_claim_resource. Signed-off-by:
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Matthew Wilcox authored
This function was only used by pci_claim_resource(), and the last commit deleted that use. Signed-off-by:
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Matthew Wilcox authored
Instead of starting from the iomem or ioport roots, start from the parent bus' resources. This fixes a bug where child resources would appear above their parents resources if they had the same size. Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6Linus Torvalds authored
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] Convert ia64 to use int-ll64.h [IA64] Fix build error in paravirt_patchlist.c [IA64] ia64 does not need umount2() syscall [IA64] hook up new rt_tgsigqueueinfo syscall [IA64] msi_ia64.c dmar_msi_type should be static [IA64] remove obsolete hw_interrupt_type [IA64] remove obsolete irq_desc_t typedef [IA64] remove obsolete no_irq_type [IA64] unexport fpswa.h
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git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6Linus Torvalds authored
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: mfd: early init for MFD running regulators mfd: fix tmio related warnings mfd: asic3: enable SD/SDIO cell mfd: asic3: enable DS1WM cell mfd: asic3: remove SD/SDIO controller register definitions mfd: asic3: use resource_size macro instead of local variable mfd: add ASIC3 IRQ numbers mfd: asic3: add clock handling for MFD cells mfd: asic3: add asic3_set_register common operation mfd: Fix Kconfig help text for WM8350 mfd: add PCAP driver mfd: add U300 AB3100 core support drivers/mfd: remove obsolete irq_desc_t typedef mfd/pcf50633-gpio.c: add MODULE_LICENSE mfd: Mark WM8350 mask revision as readable to match silicon mfd: Mark clocks_init as non-init in twl4030-core.c mfd: Correct readability of WM8350 register 227
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git://linux-arm.org/linux-2.6Linus Torvalds authored
* 'kmemleak' of git://linux-arm.org/linux-2.6: kmemleak: Fix some typos in comments kmemleak: Rename kmemleak_panic to kmemleak_stop kmemleak: Only use GFP_KERNEL|GFP_ATOMIC for the internal allocations
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Samuel Ortiz authored
For MFDs running regulator cores, we really want them to be brought up early during boot. Signed-off-by:
Samuel Ortiz <sameo@linux.intel.com> Acked-by:
Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by:
Mike Rapoport <mike@compulab.co.il>
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Samuel Ortiz authored
We can not have .driver_data as const since platform_set_drvdata() doesnt take a const. The hclk mmc_data field can be const though. Signed-off-by: -
Philipp Zabel authored
This enables the ASIC3's SD/SDIO MFD cell, supported by the tmio_mmc driver. Signed-off-by:
Philipp Zabel <philipp.zabel@gmail.com> Signed-off-by:
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Philipp Zabel authored
This enables the ASIC3's DS1WM MFD cell, supported by the ds1wm driver. Signed-off-by:
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Philipp Zabel authored
Only the base addresses remain, as they are needed to set up the IOMEM resources. Signed-off-by:
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Philipp Zabel authored
This should make the code a little bit easier to read. Signed-off-by:
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Philipp Zabel authored
IRQ number definitions for PWM, LED, SPI and OWM (ds1wm). Signed-off-by:
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Philipp Zabel authored
Since ASIC3 has to work on both PXA and S3C and since their struct clk implementations differ, we can't register out clocks with the clkdev mechanism (yet?). For now we have to keep clock handling internal to this driver and enable/disable the clocks via the mfd_cell->enable/disable functions. Signed-off-by:
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Philipp Zabel authored
Used to configure single bits of the SDHWCTRL_SDCONF and EXTCF_RESET/SELECT registers needed for DS1WM, MMC/SDIO and PCMCIA functionality. Signed-off-by:
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Mark Brown authored
More with the grammar. Signed-off-by:
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Daniel Ribeiro authored
The PCAP Asic as present on EZX phones is a multi function device with voltage regulators, ADC, touch screen controller, RTC, USB transceiver, leds controller, and audio codec. It has two SPI ports, typically one is connected to the application processor and another to the baseband, this driver provides read/write functions to its registers, irq demultiplexer and ADC queueing/abstraction. This chip is used on a lot of Motorola phones, it was manufactured by TI as a custom product with the name PTWL93017, later this design evolved into the ATLAS PMIC from Freescale (MC13783). Signed-off-by:
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Linus Walleij authored
This adds a core driver for the AB3100 mixed-signal circuit found in the ST-Ericsson U300 series platforms. This driver is a singleton proxy for all accesses to the AB3100 sub-drivers which will be merged on top of this one, RTC, regulators, battery and system power control, vibrator, LEDs, and an ALSA codec. Signed-off-by:
Linus Walleij <linus.walleij@stericsson.com> Reviewed-by:
Ben Dooks <ben-linux@fluff.org> Signed-off-by:
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Thomas Gleixner authored
The defines and typedefs (hw_interrupt_type, no_irq_type, irq_desc_t) have been kept around for migration reasons. After more than two years it's time to remove them finally. This patch cleans up one of the remaining users. When all such patches hit mainline we can remove the defines and typedefs finally. Impact: cleanup Convert the last remaining users and remove the typedef. Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Cc: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by:
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Adrian Bunk authored
Add the missing MODULE_LICENSE("GPL"). Signed-off-by:Adrian Bunk <bunk@kernel.org> Cc: Balaji Rao <balajirrao@openmoko.org> Cc: Andy Green <andy@openmoko.com> Signed-off-by:
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Mark Brown authored
No impact unless someone has written additional kernel code. Signed-off-by:
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