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2010-05-06Power rail enable/disable for sd suspend/resumePavan Kunapuli
As part of suspend/resume for sd/emmc cards, added power rail enable/disable feature to save power drawn from the rail.Verified SD card, emmc and wifi functionality after device wakes up from LP0. Bug 671029: SDHCI Suspend/Resume optimization Tested on: Android whistler+harmony. Change-Id: I2d25feb8c7c0930912aa4091f8def9d37ad9eb81 Reviewed-on: http://git-master/r/1214 Reviewed-by: Gary King <gking@nvidia.com> Tested-by: Gary King <gking@nvidia.com>
2010-04-30tegra mmc: fixing build break.yhsu
Fixed undeclared variable causing build break. Change-Id: I5c4b9483e25694123bedc05327c309d607bd04ff Reviewed-on: http://git-master/r/1265 Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com> Tested-by: Yu-Huan Hsu <yhsu@nvidia.com>
2010-04-30tegra mmc: enable sdio controller clk during wakeupDeepesh Gujarathi
Enable the sdio controller clk before the sd stack begins to enumerate the card during system resume. Failing to do so results in timeout errors and the sd card fails to mount Change-Id: I2f5399003e21d71c6a3c4776fcefda430bca20ef Reviewed-on: http://git-master/r/1262 Reviewed-by: Mayuresh Kulkarni <mkulkarni@nvidia.com> Tested-by: Mayuresh Kulkarni <mkulkarni@nvidia.com> Reviewed-by: Bitan Biswas <bbiswas@nvidia.com> Tested-by: Bitan Biswas <bbiswas@nvidia.com> Reviewed-by: Narendra Damahe <ndamahe@nvidia.com> Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com>
2010-04-29tegra mmc: enable/diable sdio controller clockDeepesh Gujarathi
The sd controller clock will be switch on/off on a per transaction basis, this will ensure that the clock is off during OSIdle which should inturn help better DVFS results. fix for Bug:673699 Change-Id: If479fe4aea6ae2c00818c84b43fc38a66437c643 Reviewed-on: http://git-master/r/1242 Reviewed-by: Janne Hellsten <jhellsten@nvidia.com> Tested-by: Janne Hellsten <jhellsten@nvidia.com>
2010-04-02ARM/tegra: delete SDIO DDK and DDK-based MMC host drivertegra-9.12.9Gary King
Change-Id: I30872e9905b7bdf1cca56e53089e5cfde7586798 Reviewed-on: http://git-master/r/1026 Reviewed-by: Gary King <gking@nvidia.com> Tested-by: Gary King <gking@nvidia.com>
2010-03-30Use CONFIG_ARCH_TEGRA_XX_SOC instead of RM capsNagesh Penumarty
Use CONFIG_ARCH_TEGRA_XX_SOC defines for differentiating between various tegra SOCs instead of getting the SOC caps from the RM. With this change enabling quirks for various chips would be much simpler. Tested on Android, whistler. Bug 661035 SD 3.0 support in the linux native driver. Change-Id: I0a85f3464d00080673a351d1614f311f1855bdae Reviewed-on: http://git-master/r/969 Reviewed-by: Gary King <gking@nvidia.com> Tested-by: Gary King <gking@nvidia.com>
2010-03-18tegra pm: add suspend/resume to tegra-sdhci driverDeepesh Gujarathi
Implement suspend/resume functionality for the tegra-sdhci driver. Call the sdhci_suspend/resume functions which handles the power off and re-enumeration of sd memory cards. We ignore suspend/resume requests for all sdio devices asssuming that the individual drivers will manage their own power. For tegra devices, the wifi driver implements its own early suspend model and hence is ignored by the sdhci driver. Change-Id: I5041d314123bac958da7775ee24bd2dc1be55ab5 Change-Id: I5041d314123bac958da7775ee24bd2dc1be55ab5 Reviewed-on: http://git-master/r/852 Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com> Reviewed-by: Gary King <gking@nvidia.com> Tested-by: Bharat Nihalani <bnihalani@nvidia.com> Reviewed-by: Rahul Bansal <rbansal@nvidia.com> Tested-by: Rahul Bansal <rbansal@nvidia.com> Reviewed-by: Venkata (Muni) Anda <vanda@nvidia.com>
2010-03-02Proper fix for commit I5c6914ef8906eed80cba15249b0760d71e3d0255Venkata(Muni) Anda
csd_struct version on some of the cards is 4.4 cards is 3. This change skips the check for that verison. Change-Id: Ib44344237c99e1a52e1b3eb864e96194b090929b Reviewed-on: http://git-master/r/739 Reviewed-by: Gary King <gking@nvidia.com> Tested-by: Gary King <gking@nvidia.com>
2010-03-02mmc.c: support ext_csd revisions in eMMCv4.4 specPavan Kunapuli
eMMC v4.4 cards report ext_csd version of 5. Mmc card enumeration fails for these cards. Included the latest version numbers. Change-Id: I5c6914ef8906eed80cba15249b0760d71e3d0255 Reviewed-on: http://git-master/r/734 Reviewed-by: Jitendra Aditya Lanka <jlanka@nvidia.com> Reviewed-by: Gary King <gking@nvidia.com> Tested-by: Gary King <gking@nvidia.com>
2010-02-26tegra mmc: update card_detect before calling callbackGary King
the card detect callback needs card_detect to be set correctly in order to properly handle error cleanup when the card is removed during transfer. Change-Id: I6540f47875c56582edb4f62d4615687d59d67d93
2010-02-25tegra mmc: Fixed data getting copied on write protected sdcardAbhishek Aggarwal
The issue was due to incorrect card present check in sdhci-tegra.c because of which the ro status of card was always returned as -1. This implied that host does not support reading ro switch and the card was assumed to be write enabled. Fixed by correcting the card present check. Bug 657078 ([AP20/Android/Whistler/Storage]: Able to copy data even though sdcard is write-protected)
2010-02-24tegra sdhci: initialize card_detectGary King
commit 829e8e97 introduced a per-host card_detect mechanism, but didn't initialize the card_detect value when controllers registered themselves. as a result, fixed cards (e.g., emmc) or cards inserted at boot time were not detected. Change-Id: I2f701873d7e078648166af8d826d25cc7efc099f
2010-02-24mmc: Fix kernel crash when SD card is repeatedly plugged in-out.Abhishek Aggarwal
In mmc_cleanup_queue, queuedata is being set to null before stopping the mmc_queue thread. This triggers cleaning up of request queue while it is still being accessed from the thread which results in null pointer dereferencing in its execution path thus causing the crash. Fixed it by: 1. Stopping the thread first and then making queuedata null. 2. If card is not present then clean up the queue to prevent further processing of requests. Part of fix for Bug 619171 Change-Id: I4360667e843f41d8e889db3df7755476a1c36714
2010-02-24tegra mmc: Impelement new present state quirk for sdhci-tegra.Abhishek Aggarwal
Enabled new present state quirk(SDHCI_QUIRK_PRESENT_STATE_REGISTER_INVALID) for tegra and modified the driver to report the card present status based on GPIO. Part of fix for Bug 619171 Change-Id: I2003fa4210818cb477910df56ccd0f1f4f62fd56
2010-02-24mmc: Add new present state quirk to sdhciAbhishek Aggarwal
Tegra does not use the present state register for determining card present status and thus returns incorrect status. Aadded a quirk(SDHCI_QUIRK_PRESENT_STATE_REGISTER_INVALID) to enable the host controller to query for card present status in a platform specific way. Part of fix for Bug 619171 Change-Id: I396f9dbbfb8f21651625403503cec9a5aac3e711
2010-02-15tegra: remove delayed suspend from sdhci driverDeepesh Gujarathi
Using delayed suspend prevents the system from going into suspend. The delayed suspend work queue acquires a wakelock and the power manager kicks in before the delayed suspend gets scheduled.
2010-02-12tegra: implement mmc_ops enable, disable handlers in sdhci driverDeepesh Gujarathi
Implement the enable and disable handlers introduced in the mmc_ops structure. Use the enable and disable handlers for dynamic clocking of SD memory devices. SD clock is enabled when the sdhci host is claimed and clk is disabled when host is released. Use delayed suspend for better performance. Change-Id: Ied5e0f00c41abd4f6d0918405356a9983ae06552
2010-02-10Merge "mmc: add 'enable' and 'disable' methods to mmc host" into ↵Gary King
android-tegra-2.6.29
2010-02-10mmc: add 'enable' and 'disable' methods to mmc hostDeepesh Gujarathi
MMC hosts that support power saving can use the 'enable' and 'disable' methods to exit and enter power saving states. An explanation of their use is provided in the comments added to include/linux/mmc/host.h. Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com> Acked-by: Matt Fleming <matt@console-pimps.org> Cc: Ian Molton <ian@mnementh.co.uk> Cc: "Roberto A. Foglietta" <roberto.foglietta@gmail.com> Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com> Cc: Denis Karpov <ext-denis.2.karpov@nokia.com> Cc: Pierre Ossman <pierre@ossman.eu> Cc: Philip Langdale <philipl@overt.org> Cc: "Madhusudhan" <madhu.cr@ti.com> Cc: <linux-mmc@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Conflicts: drivers/mmc/core/core.c include/linux/mmc/host.h tegra: cherry picked patch 8ea926b22e2d13238e4d65d8f61c48fe424e6f4f Change-Id: Iaaaaecd00452760a9bcea43f41af97bcbccef058
2010-02-10Revert "tegra: Dynamically control the card clock for SD memory devices"Deepesh Gujarathi
This reverts commit 179fa807239b85a471b046a5ba75dce7c0f68dec. Need to add dynamic clocking the right way, i.e. as part enable/disable mmc_ops handler. Commit to follow soon. Change-Id: I74245b0c7ba9da5c839b08fbe7dce293080a06a4
2010-01-29Enabled ADMA in the mmc driver.Nagesh Penumarty
AP20 SDMMC controller has the following deviations from the specification. 1. Provides the specification version as 0 instead of 1. 2. Maximum allowed ADMA descriptor length is 32KB instead of 64KB. Enabled ADMA2 option in the MMC driver by adding the sw WARs for the above two issues. Tested on: Android Bug: 620234
2010-01-20tegra: Dynamically control the card clock for SD memory devicesDeepesh Gujarathi
On certain embedded devices, leaving the card clock enabled on SD memory devices with no active transactions can increase power consumption. Enable this option to automatically disable the card clock after a transfer completes. Change-Id: I6da3388c1528bf1334c3534b7251a526812199f1
2009-12-21mmc: don't bug when EMBEDDED_MMC_START_OFFSET > CSD capacityGary King
for sector-addressed cards, the CSD capacity will generally be a small number, and this will often be less than the byte offset of the EMBEDDED_MMC_START_OFFSET. bugging in this case is wrong.
2009-12-21tegra: fix typos in / remove various debug printsGary King
removes some unnecessary status prints in tegra_udc.c and sdhci-tegra.c fixes the type in the tegra driver name in fsl_udc_core.c
2009-12-15tegra: use sdio_platform_data from tegra_devices.h, not sdio_pdataGary King
update sdhci driver to reflect correct typename Change-Id: I350196cdde9c52a8cac7e74d041a15a683f8bc1c
2009-12-14mmc: add MMC driver for NVIDIA Tegra SDIO DDKGary King
Adds an MMC driver for Tegra AP15 and AP16 SoCs using the NVIDIA Tegra SDIO DDK
2009-12-14mmc: Add SDHCI-compliant driver for NVIDIA Tegra SoCsGary King
Tegra's internal MMC controller is SDHCI compliant; this adds an SDHCI driver using NvOdm and NvRm APIs for managing board clocks Change-Id: I019feb4850dc262d8262723f39a34c08ef75fa19
2009-12-08sdhci: add controller-specific override query for max_clkGary King
on some (mostly SoC) controllers, the maximum clock speed reported by the controller may not be achievable on the platform. use a callback function to allow for greater flexibility for these systems
2009-12-08sdhci: move card detection interrupt logic into a callback functionGary King
enables platforms which do not support the standard card detection interrupt to trigger the card detection using a platform-specific handler
2009-12-08sdhci: add controller-specific set_clock callbackGary King
on platforms which support dynamic clock configuration, better performance and power may be obtained by calling a controller's set_clock routine rather than assuming that the input clock to the controller is always max_clk
2009-12-08sdhci: add BROKEN_CTRL_HISPD quirkGary King
don't change CTRL_HISPD bit after switching to high-speed mode on controllers which have this quirk
2009-12-08sdhci: add support for 8 bit data transfersGary King
2009-12-08sdhci: add ENABLE_INTERRUPT_AT_BLOCK_GAP quirkGary King
some controllers need to have INTERRUPT_AT_BLOCK_GAP enabled to detect card interrupts in SDIO mode
2009-12-08sdhci: add BROKEN_WRITE_PROTECT quirkGary King
call a host-specified callback function to detect card read-only status on hosts which do not detect the write protect flag correctly
2009-12-08mmc: add detection for MMC 4.4 boot sectorsGary King
properly unpacks the boot sector extension in MMC 4.4 CID responses
2009-12-07mmc: Add CONFIG_EMBEDDED_MMC_START_OFFSET configurationGary King
enables platforms to specify a non-zero offset for the MBR and kernel-visible file systems, for embedded systems which store proprietary data at the start of the eMMC device.
2009-12-07cherry-pick commit 9feae246963c648b212Gary King
mmc: add MMC_CAP_NONREMOVABLE host capability eMMC's are not removable, so unsafe resume is OK always. To permit this a new host capability MMC_CAP_NONREMOVABLE has been added and suspend / resume updated accordingly. Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com> Acked-by: Matt Fleming <matt@console-pimps.org> Cc: Ian Molton <ian@mnementh.co.uk> Cc: "Roberto A. Foglietta" <roberto.foglietta@gmail.com> Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com> Cc: Denis Karpov <ext-denis.2.karpov@nokia.com> Cc: Pierre Ossman <pierre@ossman.eu> Cc: Philip Langdale <philipl@overt.org> Cc: "Madhusudhan" <madhu.cr@ti.com> Cc: <linux-mmc@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Conflicts: include/linux/mmc/host.h
2009-12-07mmc: Accept EXT_CSD rev 1.3 since it is backwards compatible with 1.2Jarkko Lavinen
Signed-off-by: Jarkko Lavinen <jarkko.lavinen@nokia.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2009-12-07Merge commit 'arm/2.6.28-arm' into android-tegra-2.6.29Gary King
Conflicts: MAINTAINERS arch/arm/Kconfig arch/arm/Makefile arch/arm/boot/compressed/head.S arch/arm/common/Makefile arch/arm/configs/realview-smp_defconfig arch/arm/configs/realview_defconfig arch/arm/configs/versatile_defconfig arch/arm/include/asm/elf.h arch/arm/include/asm/uaccess.h arch/arm/kernel/module.c arch/arm/kernel/signal.c arch/arm/mach-realview/Kconfig arch/arm/mach-realview/Makefile arch/arm/mach-realview/core.c arch/arm/mach-realview/core.h arch/arm/mach-realview/include/mach/board-pba8.h arch/arm/mach-realview/include/mach/debug-macro.S arch/arm/mach-realview/include/mach/hardware.h arch/arm/mach-realview/include/mach/irqs.h arch/arm/mach-realview/include/mach/memory.h arch/arm/mach-realview/include/mach/uncompress.h arch/arm/mach-realview/localtimer.c arch/arm/mach-realview/platsmp.c arch/arm/mach-realview/realview_eb.c arch/arm/mach-realview/realview_pb1176.c arch/arm/mach-realview/realview_pb11mp.c arch/arm/mach-realview/realview_pba8.c arch/arm/mm/Kconfig arch/arm/mm/copypage-v6.c arch/arm/mm/dma-mapping.c arch/arm/mm/proc-v7.S arch/arm/oprofile/op_model_mpcore.c arch/arm/tools/mach-types arch/arm/vfp/vfpmodule.c drivers/mtd/maps/integrator-flash.c drivers/net/smsc911x.c drivers/net/smsc911x.h
2009-10-09mmc: block: Resume multi-block reads after transient read errors.David Ding
Signed-off-by: Bentao Zou <bzou1@motorola.com> Signed-off-by: David Ding <david.j.ding@motorola.com> Signed-off-by: San Mehat <san@google.com>
2009-08-17mmc_block: do not DMA to stackBen Dooks
In the write recovery routine, the data to get from the card is allocated from the stack. The DMA mapping documentation says explicitly stack memory is not mappable by any of the DMA calls. Change to using kmalloc() to allocate the memory for the result from the card and then free it once we've finished with the transaction. [ Changed to GFP_KERNEL allocation - Pierre Ossman ] Signed-off-by: Ben Dooks <ben@simtec.co.uk> Signed-off-by: Pierre Ossman <pierre@ossman.eu> Signed-off-by: San Mehat <san@google.com>
2009-08-17mmc: mmc_rescan detects card change in one runSan Mehat
With this patch, mmc_rescan can detect the removal of an mmc card and the insertion of (possibly another) card in the same run. This means that a card change can be detected without having to call mmc_detect_change multiple times. This change generalises the core such that it can be easily used by hosts which provide a mechanism to detect only the presence of a card reader cover, which has to be taken off in order to insert a card. Other hosts ("card detect" or "MMC_CAP_NEEDS_POLL") each receive an event when a card is removed and when a card is inserted, so it is sufficient for them if mmc_rescan handles only one event at a time. "Cover detect" hosts, however, only receive events about the cover status. This means that between 2 subsequent events, both a card removal and a card insertion can occur. In this case, the pre-patch version of mmc_rescan would only detect the removal of the previous card but not the insertion of the new card. Signed-off-by: Jorg Schummer <ext-jorg.2.schummer@nokia.com> Signed-off-by: Pierre Ossman <pierre@ossman.eu> Signed-off-by: San Mehat <san@android.com> Conflicts: drivers/mmc/core/core.c Signed-off-by: San Mehat <san@google.com>
2009-08-17mmc: increase power up delayJosé M. Fernández
The TI controller on Toshiba Tecra M5 needs more time to power up or the cards will init incorrectly or not at all. Signed-off-by: José M. Fernández <josemariafg@gmail.com> Signed-off-by: Pierre Ossman <pierre@ossman.eu> Signed-off-by: San Mehat <san@google.com>
2009-08-17mmc_block: be prepared for oversized requestsPierre Ossman
The block layer does not support very low sector count restrictions so we need to be prepared to handle bigger requests than we can send directly to the controller. Problem found by Manuel Lauss. Signed-off-by: Pierre Ossman <pierre@ossman.eu> Signed-off-by: San Mehat <san@google.com>
2009-08-17mmc: During unsafe resume, select the right volatge for the cardBalaji Rao
During mmc unsafe resume, choose the right voltage for the card after powerup. Although this has not seen to cause trouble, it's the wrong behaviour. Signed-off-by: Balaji Rao <balajirrao@openmoko.org> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx> Signed-off-by: San Mehat <san@google.com>
2009-08-17mmc: Add Extended CSD register to debugfsAdrian Hunter
Extended CSD is a MMC card register. As increasingly interesting fields are being added to Extended CSD, it is helpful to see its value. Note that SD cards do not have an Extended CSD register, so it is MMC only. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx> Signed-off-by: San Mehat <san@google.com>
2009-08-17mmc: add MODALIAS linkage for MMC/SD devicesAndy Whitcroft
Currently we are using an explicit udev rule to trigger loading of the mmc-block module when an MMC or SD card is detected: SUBSYSTEM=="mmc", RUN+="/sbin/modprobe -Qba mmc-block" It makes much more sense for the mmc bus driver and the mmc-block module to share MODALIAS information so that they are linked automatically. There is no real information of use in the MMC system at the current time. All devices inserted require us to load the mmc-block device. Until such time as useful parameters exist simply reflect the module linkage via the module alias below: mmc:block Signed-off-by: Andy Whitcroft <apw@canonical.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx> Signed-off-by: San Mehat <san@google.com>
2009-08-17mmc: delayed_work was never cancelledJorg Schummer
The delayed work item mmc_host.detect is now cancelled before flushing the work queue. This takes care of cases when delayed_work was scheduled for mmc_host.detect, but not yet placed in the work queue. Signed-off-by: Jorg Schummer <ext-jorg.2.schummer@nokia.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx> Signed-off-by: San Mehat <san@google.com>
2009-07-30mmc: sdio: Claim host in sdio_reset_comm()Dmitry Shmidt
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
2009-07-30Revert "mmc: mmcblk: Add new feature 'CONFIG_MMC_BLOCK_PARANOID_RESUME'"San Mehat
This reverts commit 5ca694dfd981a371e9b18cdd4a89c002ffaccbc5. Conflicts: drivers/mmc/card/Kconfig drivers/mmc/card/block.c Signed-off-by: San Mehat <san@google.com>
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