summaryrefslogtreecommitdiffstats
path: root/include/linux/mmc/card.h
Commit message (Collapse)AuthorAgeFilesLines
* mmc: core: Export API to allow hosts to get the card addressUlf Hansson2017-04-241-0/+2
| | | | | | | | | | Some hosts controllers, like Cavium, needs to know whether the card operates in byte- or block-address mode. Therefore export a new API, mmc_card_is_blockaddr(), which provides this information. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Steven J. Hill <Steven.Hill@cavium.com> Acked-by: David Daney <david.daney@cavium.com>
* mmc: mmc_test: Disable Command Queue while mmc_test is usedAdrian Hunter2017-04-241-0/+2
| | | | | | | | | | | Normal read and write commands may not be used while the command queue is enabled. Disable the Command Queue when mmc_test is probed and re-enable it when it is removed. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Harjani Ritesh <riteshh@codeaurora.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: mmc: Add functions to enable / disable the Command QueueAdrian Hunter2017-04-241-0/+1
| | | | | | | | Add helper functions to enable or disable the Command Queue. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: queue: Share mmc request array between partitionsAdrian Hunter2017-04-241-0/+5
| | | | | | | | | | | | | | eMMC can have multiple internal partitions that are represented as separate disks / queues. However switching between partitions is only done when the queue is empty. Consequently the array of mmc requests that are queued can be shared between partitions saving memory. Keep a pointer to the mmc request queue on the card, and use that instead of allocating a new one for each partition. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: Adding AUTO_BKOPS_EN bit set for Auto BKOPS supportUri Yanai2017-02-141-0/+1
| | | | | | | | | | | | Adding dedicated flag for AUTO_BKOPS in card->ext_csd structure. Read AUTO_BKOPS bit value from the device EXT_CSD and set to the card->ext_csd structure. In mmc_decode_ext_csd() add a print message in case the AUTO_BKOPS is enabled Signed-off-by: Uri Yanai <uri.yanai@sandisk.com> Signed-off-by: Alex Lemberg <alex.lemberg@sandisk.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: core: Move public functions from card.h to private headersUlf Hansson2017-02-131-240/+0
| | | | | | | | | | | | | | A significant amount of functions and other definitions are available through the public mmc card.h header file. Let's slim down this public mmc interface, as to prevent users from abusing it, by moving some of the functions/definitions to private mmc header files. This change concentrates on moving the functions into private mmc headers, following changes may continue with additional clean-ups. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
* mmc: core: First step in cleaning up public mmc header filesUlf Hansson2017-02-131-2/+0
| | | | | | | | | | | | | | This is the first step in cleaning up the public mmc header files. In this change we makes sure each header file builds standalone, as that helps to resolve dependencies. While changing this, it also seems reasonable to stop including other headers from inside a header itself which it don't depend upon. Additionally, in some cases such dependencies are better resolved by forward declaring the needed struct. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
* mmc: core: Export device lifetime information through sysfsJungseung Lee2017-02-131-0/+3
| | | | | | | | | | | | | | | In the eMMC 5.0 version of the spec, several EXT_CSD fields about device lifetime are added. - Two types of estimated indications reflected by averaged wear out of memory - An indication reflected by average reserved blocks Export the information through sysfs. Signed-off-by: Jungseung Lee <js07.lee@samsung.com> Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com> Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: mmc: Add Command Queue definitionsAdrian Hunter2016-12-051-0/+2
| | | | | | | | Add definitions relating to Command Queuing. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: core: use enum mmc_blk_status properlyLinus Walleij2016-11-291-12/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There were several instances of code using the enum mmc_blk_status by arbitrarily converting it to an int and throwing it around to different functions. This makes the code hard to understand to may give rise to strange errors. Especially the function prototype mmc_start_req() had to be modified to take a pointer to an enum mmc_blk_status and the function pointer .err_check() inside struct mmc_async_req needed to return an enum mmc_blk_status. In every case: instead of assigning the block layer error code to an int, use the enum, also change the signature of all functions actually passing this enum to use the enum. To make it possible to use the enum everywhere applicable, move it to <linux/mmc/core.h> so that all code actually using it can also see it. An interesting case was encountered in the MMC test code which did not return a enum mmc_blk_status at all in the .err_check function supposed to check whether asynchronous requests worked or not: instead it returned a normal -ERROR or even the test frameworks internal error codes. The test code would also pass on enum mmc_blk_status codes as error codes inside the test code instead of converting them to the local RESULT_* codes. I have tried to fix all instances properly and run some tests on the result. Cc: Chunyan Zhang <zhang.chunyan@linaro.org> Cc: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: sd: Export SD Status via “ssr” device attributeUri Yanai2016-09-261-0/+1
| | | | | | | | | | | | | The SD Status register contains several important fields related to the SD Card proprietary features. Those fields may be used by user space applications for vendor specific usage. None of those fields are exported today by the driver to user space. In this patch, we are reading the SD Status register and exporting (using MMC_DEV_ATTR) the SD Status register to the user space. Signed-off-by: Uri Yanai <uri.yanai@sandisk.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: core: Disable HPI for certain Hynix eMMC cardsPratibhasagar V2016-07-251-5/+30
| | | | | | | | | | | | | | Certain Hynix eMMC 4.41 cards might get broken when HPI feature is used and hence this patch disables the HPI feature for such buggy cards. As some of the other features like BKOPs/Cache/Sanitize are dependent on HPI feature, those features would also get disabled if HPI is disabled. Signed-off-by: Pratibhasagar V <pratibha@codeaurora.org> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> [gdavis: Forward port and cleanup] Signed-off-by: George G. Davis <george_davis@mentor.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: core: implement enhanced strobe supportShawn Lin2016-07-251-0/+1
| | | | | | | | | | | | | | | | | Controllers use data strobe line to latch data from devices under hs400 mode, but not for cmd line. So since emmc 5.1, JEDEC introduces enhanced strobe mode for latching cmd response from emmc devices to host controllers. This new feature is optional, so it depends both on device's cap and host's cap to decide whether to use it or not. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com> Tested-by: Douglas Anderson <dianders@chromium.org> Tested-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: core: Remove MMC_CLKGATEUlf Hansson2015-10-261-1/+0
| | | | | | | | | | | | | | | | | MMC_CLKGATE was once invented to save power by gating the bus clock at request inactivity. At that time it served its purpose. The modern way to deal with power saving for these scenarios, is by using runtime PM. Nowadays, several host drivers have deployed runtime PM, but for those that haven't and which still cares power saving at request inactivity, it's certainly time to deploy runtime PM as it has been around for several years now. To simplify code to mmc core and thus decrease maintenance efforts, this patch removes all code related to MMC_CLKGATE. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
* mmc: block: skip trim for some kingston eMMCsShawn Lin2015-08-271-0/+2
| | | | | | | | | | | For some mass production of kingston eMMCs which adopt Phison's firmware will meet an unrecoverable data conrruption occasionally if performing trim due to a firmware bug confirmed by vendor. We found it on Intel-C3230RK platform. So we add fixup of broken trim for it. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: core: Optimize case for exactly one erase-group budgetDavid Jander2015-08-171-0/+1
| | | | | | | | | | | In the (not so unlikely) case that the mmc controller timeout budget is enough for exactly one erase-group, the simplification of allowing one sector has an enormous performance penalty. We optimize this special case by introducing a flag that prohibits erase-group boundary crossing, so that we can allow trimming more than one sector at a time. Signed-off-by: David Jander <david@protonic.nl> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: mmc: Read card's valid driver strength maskAdrian Hunter2015-06-011-0/+1
| | | | | | | | | | | In preparation for supporing drive strength selection for eMMC, read the card's valid driver strengths. Note that though the SD spec uses the term "drive strength", the JEDEC eMMC spec uses the term "driver strength". Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: core: Record card drive strengthAdrian Hunter2015-06-011-0/+1
| | | | | | | | | | | In preparation for adding drive strength support for eMMC, add drive_strength to struct mmc_card to record the card drive strength for UHS-I modes and HS200 / HS400. For eMMC this will be needed when switching between HS200 and HS400. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* Revert "mmc: core: Convert mmc_driver to device_driver"Ulf Hansson2015-04-171-2/+12
| | | | | | | | | | | | | | | | | | | | This reverts commit 6685ac62b2f0 ("mmc: core: Convert mmc_driver to device_driver") The reverted commit went too far in simplifing the device driver parts for mmc. Let's restore the old mmc_driver to enable driver core to sooner or later to remove the ->probe(), ->remove() and ->shutdown() callbacks from the struct device_driver. Note that, the old ->suspend|resume() callbacks in the struct mmc_driver don't need to be restored, since the mmc block layer has converted to the modern system PM ops. Fixes: 6685ac62b2f0 ("mmc: core: Convert mmc_driver to device_driver") Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
* mmc: Resolve BKOPS compatability issueAlexey Skidanov2015-01-291-1/+1
| | | | | | | | | | | This patch is coming to fix compatibility issue of BKOPS_EN field of EXT_CSD. In eMMC-5.1, BKOPS_EN was changed, and now it has two operational bits: Bit 0 - MANUAL_EN Bit 1 - AUTO_EN In previous eMMC revisions, only Bit 0 was supported. Signed-off-by: Alexey Skidanov <alexey.skidanov@sandisk.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: core: Report firmware version for eMMC 5.0 devices.Gwendal Grignou2014-11-101-0/+3
| | | | | | | | | | For eMMC 5.0 compliant device, firmware version is stored in ext_csd. Report firmware as a 64bit hexa decimal. Vendor can use hexa or ascii string to report firmware version. Also add FFU related EXT_CSD register and note if the device is FFU capable. Signed-off-by: Gwendal Grignou <gwendal@chromium.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: core: Remove unused mmc_list_to_card() macroUlf Hansson2014-11-101-2/+0
| | | | Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: block: Use dev_set|get_drvdata()Ulf Hansson2014-11-101-2/+0
| | | | | | | | | | In most of the cases mmc_get|set_drvdata() didn't simplify code, which should be the primary reason for such macros. Let's remove them and convert to the common device_driver macros, dev_set|get_drvdata() instead. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: core: Convert mmc_driver to device_driverUlf Hansson2014-11-101-14/+2
| | | | | | | | | | | The struct mmc_driver adds an extra layer on top of the struct device_driver. That would be fine, if there were a good reason, but that's not the case. Let's simplify code by converting to the common struct device_driver instead and thus also removing superfluous overhead. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: Replace "enhanced_area_en" attribute by "partition_setting_completed"Grégory Soutadé2014-09-191-1/+1
| | | | | | | | | | Replace ext_csd "enhanced_area_en" attribute by "partition_setting_completed". It was used whether or not enhanced user area is defined and without checks of EXT_CSD_PARTITION_SETTING_COMPLETED bit. Signed-off-by: Grégory Soutadé <gsoutade@neotion.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: implement Driver Stage Register handlingSascha Hauer2014-09-091-1/+2
| | | | | | | | | | | | | | | | | | | | Some eMMC and SD cards implement a DSR register that allows to tune raise/fall times and drive strength of the CMD and DATA outputs. The values to use depend on the card in use and the host. It might be needed to reduce the drive strength to prevent voltage peaks above the host's specification. Implement a 'dsr' devicetree property that allows to specify the value to set the DSR to. For non-dt setups the new members of mmc_host can be set by board code. This patch was initially authored by Sascha Hauer. It contains improvements authored by Markus Niebel and Uwe Kleine-König. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Markus Niebel <Markus.Niebel@tq-group.com> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: Correct the value of MMC_NUM_PHY_PARTITIONYi Sun2014-09-091-2/+3
| | | | | | | | | eMMC card can support up to 7 physical partitions, including 2 boot, 1 RPMB and 4 GPs. Change MMC_NUM_PHY_PARTITION from 6 to 7, which is the correct value. Signed-off-by: Yi Sun <yi.y.sun@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
* mmc: add support for HS400 mode of eMMC5.0Seungwon Jeon2014-05-121-0/+1
| | | | | | | | | | | | | | | This patch adds HS400 mode support for eMMC5.0 device. HS400 mode is high speed DDR interface timing from HS200. Clock frequency is up to 200MHz and only 8-bit bus width is supported. In addition, tuning process of HS200 is required to synchronize the command response on the CMD line because CMD input timing for HS400 mode is the same as HS200 mode. Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Reviewed-by: Jackey Shen <jackey.shen@amd.com> Tested-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <chris@printf.net>
* mmc: rework selection of bus speed modeSeungwon Jeon2014-05-121-0/+1
| | | | | | | | | | | | | | | | | | Current implementation for bus speed mode selection is too complicated. This patch is to simplify the codes and remove some duplicate parts. The following changes are including: * Adds functions for each mode selection(HS, HS-DDR, HS200 and etc) * Rearranged the mode selection sequence with supported device type * Adds maximum speed for HS200 mode(hs200_max_dtr) * Adds field definition for HS_TIMING of EXT_CSD Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Tested-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <chris@printf.net>
* mmc: identify available device type to selectSeungwon Jeon2014-05-121-1/+1
| | | | | | | | | | | | Device types which are supported by both host and device can be identified when EXT_CSD is read. There is no need to check host's capability anymore. Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Tested-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <chris@printf.net>
* mmc: drop the speed mode of card's stateSeungwon Jeon2014-05-121-17/+6
| | | | | | | | | | | Timing mode identifier has same role and can take the place of speed mode. This change removes all related speed mode. Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Tested-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <chris@printf.net>
* mmc: card.h: Use NULL instead of 0 for END_FIXUPFabio Estevam2014-04-221-1/+1
| | | | | | | | | | | | Fix the following sparse warnings: drivers/mmc/card/block.c:2421:9: warning: Using plain integer as NULL pointer drivers/mmc/core/quirks.c:69:9: warning: Using plain integer as NULL pointer Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <chris@printf.net>
* mmc: sdio: add a quirk for broken SDIO_CCCR_INTx pollingBing Zhao2014-01-171-1/+7
| | | | | | | | | | | | | | | | Polling SDIO_CCCR_INTx could create a fake interrupt with Marvell SD8797 card. Add a quirk to handle this case. The fixup here is to issue a dummy CMD52 read to function 0 register 0xff, and this dummy read must be right after SDIO_CCCR_INTx is read. Patch has been verified on a dw_mmc controller (Samsung Chromebook) with MMC_CAP_SDIO_IRQ disabled. Signed-off-by: Bing Zhao <bzhao@marvell.com> Reviewed-by: Paul Stewart <pstew@chromium.org> Reviewed-by: Doug Anderson <dianders@chromium.org> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <chris@printf.net>
* mmc: Don't force card to active state when entering suspend/shutdownUlf Hansson2013-10-301-0/+4
| | | | | | | | | | | | | | | | | | | | | By adding a card state that records if it is suspended or resumed, we can accept asyncronus suspend/resume requests for the mmc and sd bus_ops. MMC_CAP_AGGRESSIVE_PM, will at request inactivity through the runtime bus_ops callbacks, execute a suspend of the the card. In the state were this has been done, we can receive a suspend request for the mmc bus, which for sd and mmc forced the card to active state by a pm_runtime_get_sync. In other words, the card was resumed and then immediately suspended again, completely unnecessary. Since the suspend/resume bus_ops callbacks for sd and mmc are now capable of handling asynchronous requests, we no longer need to force the card to active state before executing suspend. Evidently preventing the above sequence for MMC_CAP_AGGRESSIVE_PM. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
* mmc: core: Move cached value of the negotiated ocr mask to card structUlf Hansson2013-10-301-0/+1
| | | | | | | | | The negotiated ocr mask is directly related to the card. Once a card gets removed, the mask shall be dropped. By moving the cache of the ocr mask from the host struct to the card struct we have accomplished this. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
* mmc: core: clean up duplicate macrosJackey Shen2013-09-251-2/+0
| | | | | | | | | Clean up the duplicate macros: mmc_sd_card_uhs -> mmc_card_uhs mmc_sd_card_set_uhs -> mmc_card_set_uhs Signed-off-by: Jackey Shen <jackey.shen@amd.com> Signed-off-by: Chris Ball <cjb@laptop.org>
* mmc: core: Handle card shutdown from mmc_busUlf Hansson2013-06-271-0/+1
| | | | | | | | | | | | Considering shutdown of the card, the responsibility to initate this sequence shall be driven from the mmc_bus. This patch enables the mmc_bus to handle this sequence properly. A new .shutdown callback is added in the mmc_driver struct which is used to shutdown the blk device. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
* mmc: core: Fix select power class after resumeFredrik Soderstedt2013-05-261-1/+9
| | | | | | | | | | | | | | | | | Use the saved values in card->ext_csd when selecting power class. By doing this the power class will be selected even if mmc_init_card is called with oldcard != NULL, which is the case after a suspend/resume. Today ext_csd is NULL if mmc_init_card is called with oldcard != NULL and power class will not be selected. According to the eMMC specification the POWER_CLASS value is reset after power failure, H/W reset assertion and any CMD0 reset. Signed-off-by: Fredrik Soderstedt <fredrik.soderstedt@stericsson.com> Reviewed-by: Johan Rudholm <jrudholm@gmail.com> Acked By: Girish K S <girish.shivananjappa@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
* mmc: core: Add in support to expose PRV for v4 MMCsBernie Thompson2013-03-221-0/+1
| | | | | | | | | | The JEDEC MMC v4 spec defines a new PRV value in place of the original fwrev and hwrev specified in v1. We can expose this in the kernel to enable user space to more easily determine the product revision of a given MMC. Signed-off-by: Bernie Thompson <bhthompson@chromium.org> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
* mmc: support packed write command for eMMC4.5 devicesSeungwon Jeon2013-02-241-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch supports packed write command of eMMC4.5 devices. Several writes can be grouped in packed command and all data of the individual commands can be sent in a single transfer on the bus. Large amounts of data in one transfer rather than several data of small size are effective for eMMC write internally. As a result, packed command help write throughput be improved. The following tables show the results of packed write. Type A: test none | packed iozone 25.8 | 31 tiotest 27.6 | 31.2 lmdd 31.2 | 35.4 Type B: test none | packed iozone 44.1 | 51.1 tiotest 47.9 | 52.5 lmdd 51.6 | 59.2 Type C: test none | packed iozone 19.5 | 32 tiotest 19.9 | 34.5 lmdd 22.8 | 40.7 Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Reviewed-by: Maya Erez <merez@codeaurora.org> Reviewed-by: Namjae Jeon <linkinjeon@gmail.com> Signed-off-by: Chris Ball <cjb@laptop.org>
* mmc: add packed command feature of eMMC4.5Seungwon Jeon2013-02-241-0/+3
| | | | | | | | | | | | | This patch adds packed command feature of eMMC4.5. The maximum number for packing read (or write) is offered and exception event relevant to packed command which is used for error handling is enabled. If host wants to use this feature, MMC_CAP2_PACKED_CMD should be set. Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Reviewed-by: Maya Erez <merez@codeaurora.org> Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org> Reviewed-by: Namjae Jeon <linkinjeon@gmail.com> Signed-off-by: Chris Ball <cjb@laptop.org>
* mmc: correct the EXCEPTION_EVENTS_STATUS value in commentZhang, YiX X2013-02-241-1/+1
| | | | | | | The right value is 54 according to eMMC 4.5 specification. Signed-off-by: ZhangYi <yix.x.zhang@intel.com> Signed-off-by: Chris Ball <cjb@laptop.org>
* mmc: fix async request mechanism for sequential read scenariosKonstantin Dorfman2013-02-111-0/+12
| | | | | | | | | | | | | | | | | | | | | When current request is running on the bus and if next request fetched by mmcqd is NULL, mmc context (mmcqd thread) gets blocked until the current request completes. This means that if new request comes in while the mmcqd thread is blocked, this new request can not be prepared in parallel to current ongoing request. This may result in delaying the new request execution and increase it's latency. This change allows to wake up the MMC thread on new request arrival. Now once the MMC thread is woken up, a new request can be fetched and prepared in parallel to the current running request which means this new request can be started immediately after the current running request completes. With this change read throughput is improved by 16%. Signed-off-by: Konstantin Dorfman <kdorfman@codeaurora.org> Reviewed-by: Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
* mmc: core: Expose access to RPMB partitionLoic Pallardy2012-12-061-0/+2
| | | | | | | | | | | | | | | Following JEDEC standard, if the mmc supports RPMB partition, a new interface is created and exposed via /dev/block. Users will be able to access RPMB partition using standard mmc IOCTL commands. Signed-off-by: Alex Macro <alex.macro@stericsson.com> Signed-off-by: Loic Pallardy <loic.pallardy@stericsson.com> Reviewed-by: Namjae Jeon <linkinjeon@gmail.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Johan Rudholm <johan.rudholm@stericsson.com> Acked-by: Krishna Konda <kkonda@codeaurora.org> Signed-off-by: Chris Ball <cjb@laptop.org>
* mmc: core: Fixup broken suspend and eMMC4.5 power off notifyUlf Hansson2012-10-071-10/+2
| | | | | | | | | | | | | | | | | | | This patch fixes up the broken suspend sequence for eMMC with sleep support. Additionally it reworks the eMMC4.5 Power Off Notification feature so it fits together with the existing sleep feature. The CMD0 based re-initialization of the eMMC at resume is re-introduced to maintain compatiblity for devices using sleep. A host shall use MMC_CAP2_POWEROFF_NOTIFY to enable the Power Off Notification feature. We might be able to remove this cap later on, if we think that Power Off Notification always is preferred over sleep, even if the host is not able to cut the eMMC VCCQ power. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Saugata Das <saugata.das@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
* mmc: support BKOPS feature for eMMCJaehoon Chung2012-10-031-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | Enable eMMC background operations (BKOPS) feature. If URGENT_BKOPS is set after a response, note that BKOPS are required. Immediately run BKOPS if required. Read/write operations should be requested during BKOPS(LEVEL-1), then issue HPI to interrupt the ongoing BKOPS and service the foreground operation. (This patch only controls the LEVEL2/3.) When repeating the writing 1GB data, at a certain time, performance is decreased. At that time, card triggers the Level-3 or Level-2. After running bkops, performance is recovered. Future considerations: * Check BKOPS_LEVEL=1 and start BKOPS in a preventive manner. * Interrupt ongoing BKOPS before powering off the card. * How do we get BKOPS_STATUS value (periodically send ext_csd command)? * If using periodic bkops, also consider runtime_pm control. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Konstantin Dorfman <kdorfman@codeaurora.org> Reviewed-by: Maya Erez <merez@codeaurora.org> Signed-off-by: Chris Ball <cjb@laptop.org>
* mmc: card: Skip secure erase on MoviNAND; causes unrecoverable corruption.Ian Chen2012-09-041-0/+1
| | | | | | | | | | | | | | | | | | | | | | For several MoviNAND eMMC parts, there are known issues with secure erase and secure trim. For these specific MoviNAND devices, we skip these operations. Specifically, there is a bug in the eMMC firmware that causes unrecoverable corruption when the MMC is erased with MMC_CAP_ERASE enabled. References: http://forum.xda-developers.com/showthread.php?t=1644364 https://plus.google.com/111398485184813224730/posts/21pTYfTsCkB#111398485184813224730/posts/21pTYfTsCkB Signed-off-by: Ian Chen <ian.cy.chen@samsung.com> Reviewed-by: Namjae Jeon <linkinjeon@gmail.com> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Cc: stable <stable@vger.kernel.org> [3.0+] Signed-off-by: Chris Ball <cjb@laptop.org>
* mmc: sdhci: only set 200mA support for 1.8v if 200mA is availablePhilip Rakity2012-07-211-0/+1
| | | | | | | | | | max_current_caps can return 0 if not available from the sd controller. If no regulator is present or the regulator specifies a current less then 200ma, we no longer still set the 200mA caps bit anyway. Signed-off-by: Philip Rakity <prakity@marvell.com> Reviewed-by: Aaron Lu <aaron_lu@amd.com> Signed-off-by: Chris Ball <cjb@laptop.org>
* mmc: core: fix the decision of HS200/DDR card-typeSeungwon Jeon2012-05-091-0/+4
| | | | | | | | | | | Current implementation decides the card type exclusively. Even though eMMC device can support both HS200 and DDR mode, card type will be set only for HS200. If the host doesn't support HS200 but has DDR capability, then DDR mode can't be selected. Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Chris Ball <cjb@laptop.org>
* mmc: remove MMC bus legacy suspend/resume methodChuanxiao Dong2012-04-201-1/+1
| | | | | | | | | | | | | | | | MMC bus is using legacy suspend/resume method, which is not compatible if runtime pm callbacks are used. In this scenario, MMC bus suspend/resume callbacks cannot be called when system entering S3. So change to use the new defined dev_pm_ops for system sleeping mode. Tested on AM335x Platform. Solves major issue/crash reported at http://www.mail-archive.com/linux-omap@vger.kernel.org/msg65425.html Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Tested-by: Hebbar, Gururaja <gururaja.hebbar@ti.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Ulf Hansson <ulf.hansson@stericsson.com> Signed-off-by: Chris Ball <cjb@laptop.org>
OpenPOWER on IntegriCloud