- 11 Aug, 2010 40 commits
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Wan ZongShun authored
Use rtc_valid_tm() to check returned struct rtc_time *tm - it can avoid returning wrong tm value. Signed-off-by:
Wan ZongShun <mcuos.com@gmail.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Roman Fietze authored
- derived from rtc-pcf8563 - no SRAM driver Signed-off-by:
Roman Fietze <roman.fietze@telemotive.de> Cc: Wan ZongShun <mcuos.com@gmail.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by:
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Baruch Siach authored
This driver is based on code from Freescale which accompanies their i.MX25 PDK board, with some cleanup. Signed-off-by:
Baruch Siach <baruch@tkos.co.il> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Sascha Hauer <kernel@pengutronix.de> Acked-by:
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Huang Weiyi authored
Signed-off-by:
Huang Weiyi <weiyi.huang@gmail.com> Acked-by:
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Wan ZongShun authored
We shouldn't implement private ops->ioctl() unless absolutely necessary. pxa series RTC driver's ioctl() is unnecessary, since RTC subsystem has implement the ioctl() very well,so we can only use the API of '.alarm_irq_enable' and '.update_irq_enable' to do enable irq action. Signed-off-by:
Robert Jarzmik <robert.jarzmik@free.fr> Acked-by:
Eric Miao <eric.y.miao@gmail.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by:
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Sergey Matyukevich authored
- add sanity check for alarm data in fm3130_probe - fix fm3130_set_alarm. According to the datasheet, setting match bit '0' indicates that the corresponding alarm field will be used in the match process - add operation alarm_irq_enable operation which is responsible for handling RTC_AIE_ON, RTC_AIE_OFF ioctls - remove clearing of AF bit after reading rtc/alarm control register: according to datasheet this bit is cleared anyway when rtc/alarm control register is read [akpm@linux-foundation.org: make fm3130_alarm_irq_enable() static, fix comment layout] Signed-off-by:
Sergey Matyukevich <geomatsi@gmail.com> Acked-by:
Sergey Lapin <slapin@ossfans.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by:
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Wan ZongShun authored
Remove six unused fields from `struct rtc_plat_data'. Signed-off-by:
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Wan ZongShun authored
Signed-off-by:
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Wan ZongShun authored
pxa_rtc.rtc_alarm is unused. Signed-off-by:
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Graham Gower authored
Signed-off-by:
Graham Gower <graham.gower@gmail.com> Acked-by:
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Wan ZongShun authored
When a user application wants to set the rtc time, the RTC subsystem takes advantage of 'rtc_valid_tm(tm)' to check 'rtc_time *tm' value validity, it make sure the 'tm->tm_year' is larger than 70,so if '70< tm_year < 100', the '(settm->tm_year - 100)' will be negative. ' Setting the negative value to hardware register will be invalid, so I add the 'if' condition to make sure set a valid value to register. Signed-off-by:
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Wan ZongShun authored
- add an mdelay(1) to the polling loop to cause less frequent access to the hardware register. - change the return value from ENODEV to EPERM if the loop timed out. I think the 'Operation not permitted' description is more suitable for the meaning of 'check_rtc_access_enable()' function, it just be used to judge rtc access operation is permitted or not. Signed-off-by:
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Dan Carpenter authored
After 97e7449a: "autofs4: fix indirect mount pending expire race" we no longer assumed that "ino" can be null. The other null checks got removed but this was one was missed. Signed-off-by:
Dan Carpenter <error27@gmail.com> Cc: Ian Kent <raven@themaw.net> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
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Kulikov Vasiliy authored
Check return value of put_user() and return -EFAULT if it failed. Original comment "We did a get user...so assuming mem is ok...is this bad?" is incorrect because memory can be read only. Signed-off-by:
Kulikov Vasiliy <segooon@gmail.com> Signed-off-by:
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Kulikov Vasiliy authored
If (len > reslen) we must not call copy_to_user() since kernel buffer is smaller than we want to copy. Similar code in this file is correct, so this bug was a typo. Signed-off-by:
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Julia Lawall authored
Add a mutex_unlock missing on the error path. The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression E1; @@ * mutex_lock(E1,...); <+... when != E1 if (...) { ... when != E1 * return ...; } ...+> * mutex_unlock(E1,...); // </smpl> Signed-off-by:
Julia Lawall <julia@diku.dk> Signed-off-by:
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Pablo Castillo authored
Signed-off-by:
Pablo Castillo <CyberCastle@gmail.com> Signed-off-by:
Stanislaw Gruszka <sgruszka@redhat.com> Tested-by:
Gregg Lebovitz <gregg@lebovitz.net> Cc: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by:
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Roy Zang authored
P4080 ESDHC controller does not support 1.8V and 3.0V voltage. but the host controller capabilities register wrongly set the bits. This patch adds the workaround to correct the weird voltage setting bits. Only 3.3V voltage is supported for P4080 ESDHC controller. Signed-off-by:
Roy Zang <tie-fei.zang@freescale.com> Cc: Jerry Huang <Chang-Ming.Huang@freescale.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Kumar Gala <galak@gate.crashing.org> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: <linux-mmc@vger.kernel.org> Signed-off-by:
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Roy Zang authored
Signed-off-by:
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Jerry Huang authored
Add auto CMD12 command support for eSDHC driver. This is needed by P4080 and P1022 for block read/write. Manual asynchronous CMD12 abort operation causes protocol violations on these silicons. Signed-off-by:
Jerry Huang <Chang-Ming.Huang@freescale.com> Signed-off-by:
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Marek Szyprowski authored
This patch adds support for regulator API to sdhci core driver. Regulators can be used to disable power in suspended state to reduce dissipated energy. Signed-off-by:
Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by:
Kyungmin Park <kyungmin.park@samsung.com> Acked-by:
Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: <linux-mmc@vger.kernel.org> Signed-off-by:
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Marek Szyprowski authored
On some Samsung SoCs not all SDHCI controllers have card detect (CD) line. For some embedded designs it is not even needed, because ususally the device (like SDIO flash memory or wifi controller) is permanently wired to the controller. There are also systems which have a card detect line connected to some of the external interrupt lines or the presence of the card depends on some other actions (like enabling a power regulator). This patch adds support for all these cases. The following card detection methods are possible: 1. internal sdhci host card detect line 2. external event 3. external gpio interrupt 4. no card detect line, controller will poll for the card 5. no card detect line, card is permanently wired to the controller (once detected host won't poll it any more) By default, all existing code would use method #1, what is compatible with the previous version of the driver. In case of external event, two callbacks must be provided in platdata: ext_cd_init and ext_cd_cleanup. Both of them get a callback to a function that notifies the s3c-sdhci host contoller as their argument. That callback function should be called from the even dispatcher to let host notice the card insertion/removal. In case of external gpio interrupt, a gpio pin number must be provided in platdata (ext_cd_gpio parameter), as well as the information about the polarity of that gpio pin (ext_cd_gpio_invert). By default (ext_cd_gpio_invert == 0) gpio value 0 means 'card has been removed', but this can be changed to 'card has been removed' when ext_cd_gpio_invert == 1. This patch adds all required changes to sdhci-s3c driver. Signed-off-by:
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Marek Szyprowski authored
This patch enables SDHCI_QUIRK_NO_HISPD_BIT on Samsung SDHCI driver. This solves detection problems with some external SD cards. This change has been tested on S5PC100 and S5PC110. It has no inpact on driver speed. Signed-off-by:
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Marek Szyprowski authored
S3C SDHCI host controller can change the source for generating mmc clock. By default host bus clock is used, what causes some problems on machines with 133MHz bus, because the SDHCI divider cannot be as high get proper clock value for identification mode. This is not a problem for the controller, because it can generate lower frequencies from other clock sources. This patch changes sdhci driver to use get_min_clock() call if it has been provided. This fixes the flood of the following warnings on Samsung S5PV210 SoCs: mmc0: Minimum clock frequency too high for identification mode Signed-off-by:
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Hyuk Lee authored
On Samsung's SDMMC hosts the timeout clock is derivied from the SD Clock which is set dynamically. So checked SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK quirk and removed 'sdhci_s3c_get_timeout_clk' callback which doesn't need any more. Signed-off-by:
Hyuk Lee <hyuk1.lee@samsung.com> Signed-off-by:
Kukjin Kim <kgene.kim@samsung.com> Cc: Ben Dooks <ben-linux@fluff.org> Cc: <linux-mmc@vger.kernel.org> Signed-off-by:
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Venkatraman S authored
If other informative interrupts are enabled for the DMA channel used by hsmmc, those are incorrectly treated as block completion. This patch lets only the block completion interrupt to be processed. Signed-off-by:
Venkatraman S <svenkatr@ti.com> Acked-by:
Madhusudhan Chikkature <madhu.cr@ti.com> Cc: <linux-mmc@vger.kernel.org> Signed-off-by:
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Christian Dietrich authored
CONFIG_MMC_MSM7X00A_RESUME_IN_WQ and CONFIG_MMC_EMBEDDED_SDIO don't exist in Kconfig and is never defined anywhere else, therefore removing all references for it from the source code. Signed-off-by:
Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de> Acked-by:
David Brown <davidb@codeaurora.org> Cc: Daniel Walker <dwalker@codeaurora.org> Cc: <linux-mmc@vger.kernel.org> Signed-off-by:
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Grazvydas Ignotas authored
Pandora has TI WL1251 attached on MMC3, which is non-standard SDIO chip. Make use MMC_QUIRK_NONSTD_SDIO to tell SDIO core about it. Signed-off-by:
Grazvydas Ignotas <notasas@gmail.com> Cc: Adrian Hunter <adrian.hunter@nokia.com> Cc: Tony Lindgren <tony@atomide.com> Cc: Bob Copeland <me@bobcopeland.com> Cc: Kalle Valo <kvalo@adurom.com> Cc: Madhusudhan Chikkature <madhu.cr@ti.com> Cc: Kishore Kadiyala <kishore.kadiyala@ti.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: <linux-mmc@vger.kernel.org> Signed-off-by:
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Grazvydas Ignotas authored
This will allow us to set up special cards in machine drivers just after they are detected by MMC core. Signed-off-by:
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Grazvydas Ignotas authored
There are some chips (like TI WL12xx series) that can be interfaced over SDIO but don't support the SDIO specification, meaning that they are missing CIA (Common I/O Area) with all it's registers. Current Linux SDIO implementation relies on those registers to identify and configure the card, so non-standard cards can not function and cause lots of warnings from the core when it reads invalid data from non-existent registers. After this patch, init_card() host callback can now set new quirk MMC_QUIRK_NONSTD_SDIO, which means that SDIO core should not try to access any standard SDIO registers and rely on init_card() to fill all SDIO structures instead. As those cards are usually embedded chips, all the required information can be obtained from machine board files by the host driver when it's called through init_card() callback. Signed-off-by:
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Anton Vorontsov authored
There's nothing special, just SoC-specific ops and quirks. Signed-off-by:
Anton Vorontsov <avorontsov@mvista.com> Cc: Ben Dooks <ben@simtec.co.uk> Cc: Richard R?jfors <richard.rojfors@pelagicore.com> Cc: <linux-mmc@vger.kernel.org> Signed-off-by:
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Anton Vorontsov authored
Due to build system limitations, intermediate and final objects can't have the same names. And as we're going to start building SoC-specific objects, let's rename the module to sdhci-platform, into which we'll link sdhci-pltfm and SoC-specifc objects. There should be no issue in renaming as the driver uses modalias mechanism. This is exactly the same approach as in sdhci-of driver. Signed-off-by:
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Anton Vorontsov authored
Sometimes want to place SoC-specific parts alongside with the generic driver, and to do so, we have to switch the driver over to the module device table matching. Note that drivers/mmc/host/sdhci-pltfm.h is so far empty, but it'll hold SoC-specific driver data handlers soon. Signed-off-by:
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Kishore Kadiyala authored
This patch improves low speeds for SD cards. OMAP-MMC controller's can support maximum bus width of '8'. when bus width is mentioned as "8" in controller data,the SD stack will check whether bus width is "4" and if not it will set bus width to "1" and there by degrading performance. This patch fixes the issue and improves the performance of SD cards. Signed-off-by:
Kishore Kadiyala <kishore.kadiyala@ti.com> Signed-off-by:
Nishanth Menon <nm@ti.com> Acked-by:
Jarkko Nikula <jhnikula@gmail.com> Cc: Adrian Hunter <adrian.hunter@nokia.com> Cc: Matt Fleming <matt@console-pimps.org> Cc: Tony Lindgren <tony@atomide.com> Cc: <linux-mmc@vger.kernel.org> Signed-off-by:
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Hanumath Prasad authored
A non-zero value of SEC_COUNT does not indicate that the card is sector addressed. According to the MMC specification, cards with a density greater than 2GiB are sector addressed. Acked-by:
Linus Walleij <linus.walleij@stericsson.com> Signed-off-by:
Hanumath Prasad <hanumath.prasad@stericsson.com> Signed-off-by:
Rabin Vincent <rabin.vincent@stericsson.com> Cc: <linux-mmc@vger.kernel.org> Signed-off-by:
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Kyungmin Park authored
Some host controllers can set mmc->caps before sdhci_add_host(). Signed-off-by:
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Kyungmin Park authored
Some host controllers such as s5pc110 support the WIDE8 feature. Signed-off-by:
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Kyungmin Park authored
When using QUIRK_NONSTANDARD_CLOCK, it checks the set_clock() function which is not used actually. So delete it. Signed-off-by:
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Maxim Levitsky authored
The current way of disabling it is not well tested by vendor and has all kinds of bugs that show up on resume from ram/disk. A very good example is a dead SDHCI controller. Old way of disabling is still supported by continuing to use CONFIG_MMC_RICOH_MMC. Based on 'http://list.drzeus.cx/pipermail/sdhci-devel/2007-December/002085.html' Therefore most of the credit for this goes to Andrew de Quincey Signed-off-by:
Maxim Levitsky <maximlevitsky@gmail.com> Cc: Andrew de Quincey <adq_dvb@lidskialf.net> Acked-by:
Philip Langdale <philipl@overt.org> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: <linux-mmc@vger.kernel.org> Signed-off-by:
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Maxim Levitsky authored
If you don't use CONFIG_MMC_UNSAFE_RESUME, as soon as you attempt to suspend, the card will be removed, therefore this patch doesn't change the behavior of this option. However the removal will be done by pm notifier, which runs while userspace is still not frozen and thus can freely use del_gendisk, without the risk of deadlock which would happen otherwise. Card detect workqueue is now disabled while userspace is frozen, Therefore if you do use CONFIG_MMC_UNSAFE_RESUME, and remove the card during suspend, the removal will be detected as soon as userspace is unfrozen, again at the moment it is safe to call del_gendisk. Tested with and without CONFIG_MMC_UNSAFE_RESUME with suspend and hibernate. [akpm@linux-foundation.org: clean up function prototype] [akpm@linux-foundation.org: fix CONFIG_PM-n linkage, small cleanups] [akpm@linux-foundation.org: coding-style fixes] Signed-off-by:
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