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2011-05-21Revert "mmc: fix a race between card-detect rescan and clock-gate work ↵Chris Ball
instances" commit 86f315bbb2374f1f077500ad131dd9b71856e697 upstream. This reverts commit 26fc8775b51484d8c0a671198639c6d5ae60533e, which has been reported to cause boot/resume-time crashes for some users: https://bbs.archlinux.org/viewtopic.php?id=118751. Signed-off-by: Chris Ball <cjb@laptop.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-09mmc: sdhci: Check mrq != NULL in sdhci_tasklet_finishChris Ball
commit 0c9c99a765321104cc5f9c97f949382a9ba4927e upstream. It seems that under certain circumstances the sdhci_tasklet_finish() call can be entered with mrq set to NULL, causing the system to crash with a NULL pointer de-reference. Seen on S3C6410 system. Based on a patch by Dimitris Papastamos. Reported-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com> Signed-off-by: Chris Ball <cjb@laptop.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-09mmc: sdhci: Check mrq->cmd in sdhci_tasklet_finishBen Dooks
commit b7b4d3426d2b5ecab21578eb20d8e456a1aace8f upstream. It seems that under certain circumstances that the sdhci_tasklet_finish() call can be entered with mrq->cmd set to NULL, causing the system to crash with a NULL pointer de-reference. Unable to handle kernel NULL pointer dereference at virtual address 00000000 PC is at sdhci_tasklet_finish+0x34/0xe8 LR is at sdhci_tasklet_finish+0x24/0xe8 Seen on S3C6410 system. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Chris Ball <cjb@laptop.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-09mmc: sdhci-pci: Fix error case in sdhci_pci_probe_slot()Chris Ball
commit 9fdcdbb0d84922e7ccda2f717a04ea62629f7e18 upstream. If pci_ioremap_bar() fails during probe, we "goto release;" and free the host, but then we return 0 -- which tells sdhci_pci_probe() that the probe succeeded. Since we think the probe succeeded, when we unload sdhci we'll go to sdhci_pci_remove_slot() and it will try to dereference slot->host, which is now NULL because we freed it in the error path earlier. The patch simply sets ret appropriately, so that sdhci_pci_probe() will detect the failure immediately and bail out. Signed-off-by: Chris Ball <cjb@laptop.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-09mmc: fix a race between card-detect rescan and clock-gate work instancesGuennadi Liakhovetski
commit 26fc8775b51484d8c0a671198639c6d5ae60533e upstream. Currently there is a race in the MMC core between a card-detect rescan work and the clock-gating work, scheduled from a command completion. Fix it by removing the dedicated clock-gating mutex and using the MMC standard locking mechanism instead. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Cc: Simon Horman <horms@verge.net.au> Cc: Magnus Damm <damm@opensource.se> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-23mmc: sdio: remember new card RCA when redetecting cardStefan Nilsson XK
commit 0aab3995485b8a994bf29a995a008c9ea4a28054 upstream. During redetection of a SDIO card, a request for a new card RCA was submitted to the card, but was then overwritten by the old RCA. This caused the card to be deselected instead of selected when using the incorrect RCA. This bug's been present since the "oldcard" handling was introduced in 2.6.32. Signed-off-by: Stefan Nilsson XK <stefan.xk.nilsson@stericsson.com> Reviewed-by: Ulf Hansson <ulf.hansson@stericsson.com> Reviewed-by: Pawel Wieczorkiewicz <pawel.wieczorkiewicz@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-23mmc: sdhci: Add Ricoh e823 PCI IDManoj Iyer
commit 5fd11c0754fa069b6aba64b65734aa2fb193552d upstream. Signed-off-by: Manoj Iyer <manoj.iyer@canonical.com> Signed-off-by: Chris Ball <cjb@laptop.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-03-09Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: mmc: fix CONFIG_MMC_UNSAFE_RESUME regression
2011-03-08mmc: fix CONFIG_MMC_UNSAFE_RESUME regressionOhad Ben-Cohen
30201e7f3 ("mmc: skip detection of nonremovable cards on rescan") allowed skipping detection of nonremovable cards on mmc_rescan(). The intention was to only skip detection of hardwired cards that cannot be removed, so make sure this is indeed the case by directly checking for (lack of) MMC_CAP_NONREMOVABLE, instead of using mmc_card_is_removable(), which is overloaded with CONFIG_MMC_UNSAFE_RESUME semantics. The user-visible symptom of the bug this patch fixes is that no "mmc: card XXXX removed" message appears in dmesg when a card is removed and CONFIG_MMC_UNSAFE_RESUME=y. Reported-and-tested-by: Dmitry Shmidt <dimitrysh@google.com> Reported-and-tested-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-07mmc: sdio: Allow sdio operations in other threads during sdio_add_func()Dmitry Shmidt
This fixes a bug introduced by 807e8e40673d ("mmc: Fix sd/sdio/mmc initialization frequency retries") that prevented SDIO drivers from performing SDIO commands in their probe routines -- the above patch called mmc_claim_host() before sdio_add_func(), which causes a deadlock if an external SDIO driver calls sdio_claim_host(). Fix tested on an OLPC XO-1.75 with libertas on SDIO. Signed-off-by: Dmitry Shmidt <dimitrysh@google.com> Reviewed-and-Tested-by: Chris Ball <cjb@laptop.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-31ARM: mmci: round down the bytes transferred on errorRussell King
We should not report incomplete blocks on error. Return the number of bytes successfully transferred, rounded down to the nearest block. Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-31ARM: mmci: complete the transaction on errorRussell King
When we encounter an error, make sure we complete the transaction otherwise we'll leave the request dangling. Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-27ARM: 6642/1: mmci: calculate remaining bytes at error correctlyLinus Walleij
The MMCIDATACNT register contain the number of byte left at error not the number of words, so loose the << 2 thing. Further if CRC fails on the first block, we may end up with a negative number of transferred bytes which is not good, and the formula was in wrong order. Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-26mmc: bfin_sdh: fix alloc size for private dataSonic Zhang
The bfin_sdh driver allocates the wrong size for the private data in the mmc_host. The first parameter of mmc_alloc_host should be the size of the local driver struct rather than the common mmc_host. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Cc: <stable@kernel.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-26mmc: sdhci-s3c: add platform_8bit_width() hookJaehoon Chung
We have 8-bit width support but is not a v3 controller. So we need platform_8bit_width() to support 8-bit buswidth. Also we need MMC_CAP_8_BIT_DATA, so we add it in platdata. This gets 8-bit support working again on s3c, after we previously disabled 8-bit by default on non-v3 controllers. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-25mmc: jz4740: don't treat NULL clk as an errorJamie Iles
clk_get() returns a struct clk cookie to the driver and some platforms may return NULL if they only support a single clock. clk_get() has only failed if it returns a ERR_PTR() encoded pointer. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-25mmc: mmci: don't read command response when invalidRussell King - ARM Linux
Don't read the command response from the registers when either the command timed out (because there was no response from the card) or the checksum on the response was invalid. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-25mmc: ushc: Remove duplicate include of usb.hJesper Juhl
Including usb.h once is enough in drivers/mmc/host/ushc.c This removes the duplicate. Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-26Merge branch 'fixes' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm: ALSA: AACI: fix timeout duration ALSA: AACI: fix timeout condition checking ARM: 6636/1: ep93xx: default multiplexed gpio ports to gpio mode ARM: 6637/1: Make the argument to virt_to_phys() "const volatile" ARM: twd: ensure timer reload is reprogrammed on entry to periodic mode ARM: 6635/2: Configure reference clock for Versatile Express timers ARM: versatile: name configuration options after actual board names ARM: realview: name configuration options after actual board names ARM: realview,vexpress: fix section mismatch warning for pen_release ARM: 6632/3: mmci: stop using the blockend interrupts
2011-01-24ARM: 6632/3: mmci: stop using the blockend interruptsLinus Walleij
Implement a suggestion from Russell to drop the use of blockend interrupts altogether and instead rely on the data counter. Tested with error-free cards on U300, U8500 and RealView PB1176. Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-21drivers: mmc: msm: remove clock disable in probeDaniel Walker
The probe function adds the MMC host which can start accepting request immediately. There is an assumption here that no requests happen immediatly, but it's not always the case. This assumption can causes a BUG() when the clocks are disabled. The fix is to just remove the clock disable in the probe function. Signed-off-by: Daniel Walker <dwalker@codeaurora.org>
2011-01-21mmc: msm: fix dma usage not to use internal APIsDaniel Walker
Remove parts of this driver which use internal API calls. This replaces the calls as suggested by Russell King. Cc: Russell King - ARM Linux <linux@arm.linux.org.uk> Signed-off-by: Daniel Walker <dwalker@codeaurora.org>
2011-01-14mmc: sdhci-of: fix build on non-powerpc platformsRob Herring
Explicitly include err.h, of_address.h and of_irq.h. Make use of machine_is() conditional on PPC. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-01-13Merge branch 'for-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (43 commits) Documentation/trace/events.txt: Remove obsolete sched_signal_send. writeback: fix global_dirty_limits comment runtime -> real-time ppc: fix comment typo singal -> signal drivers: fix comment typo diable -> disable. m68k: fix comment typo diable -> disable. wireless: comment typo fix diable -> disable. media: comment typo fix diable -> disable. remove doc for obsolete dynamic-printk kernel-parameter remove extraneous 'is' from Documentation/iostats.txt Fix spelling milisec -> ms in snd_ps3 module parameter description Fix spelling mistakes in comments Revert conflicting V4L changes i7core_edac: fix typos in comments mm/rmap.c: fix comment sound, ca0106: Fix assignment to 'channel'. hrtimer: fix a typo in comment init/Kconfig: fix typo anon_inodes: fix wrong function name in comment fix comment typos concerning "consistent" poll: fix a typo in comment ... Fix up trivial conflicts in: - drivers/net/wireless/iwlwifi/iwl-core.c (moved to iwl-legacy.c) - fs/ext4/ext4.h Also fix missed 'diabled' typo in drivers/net/bnx2x/bnx2x.h while at it.
2011-01-11Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (39 commits) mmc: davinci: add support for SDIO irq handling mmc: fix division by zero in MMC core mmc: tmio_mmc: fix CMD irq handling mmc: tmio_mmc: handle missing HW interrupts mfd: sh_mobile_sdhi: activate SDIO IRQ for tmio_mmc mmc: tmio_mmc: implement SDIO IRQ support mfd: sdhi: require the tmio-mmc driver to bounce unaligned buffers mmc: tmio_mmc: silence compiler warnings mmc: tmio_mmc: implement a bounce buffer for unaligned DMA mmc: tmio_mmc: merge the private header into the driver mmc: tmio_mmc: fix PIO fallback on DMA descriptor allocation failure mmc: tmio_mmc: allow multi-element scatter-gather lists mmc: Register debugfs dir before calling card probe function. mmc: MMC_BLOCK_MINORS should depend on MMC_BLOCK. mmc: Explain why we make adjacent mmc_bus_{put,get} calls during rescan. mmc: Fix sd/sdio/mmc initialization frequency retries mmc: fix mmc_set_bus_width_ddr() call without bus-width-test cap mmc: dw_mmc: Add Synopsys DesignWare mmc host driver. mmc: add sdhci-tegra driver for Tegra SoCs mmc: sdhci: add quirk for max len ADMA descriptors ...
2011-01-10Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds
* 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6: (29 commits) of/flattree: forward declare struct device_node in of_fdt.h ipmi: explicitly include of_address.h and of_irq.h sparc: explicitly cast negative phandle checks to s32 powerpc/405: Fix missing #{address,size}-cells in i2c node powerpc/5200: dts: refactor dts files powerpc/5200: dts: Change combatible strings on localbus powerpc/5200: dts: remove unused properties powerpc/5200: dts: rename nodes to prepare for refactoring dts files of/flattree: Update dtc to current mainline. of/device: Don't register disabled devices powerpc/dts: fix syntax bugs in bluestone.dts of: Fixes for OF probing on little endian systems of: make drivers depend on CONFIG_OF instead of CONFIG_PPC_OF of/flattree: Add of_flat_dt_match() helper function of_serial: explicitly include of_irq.h of/flattree: Refactor unflatten_device_tree and add fdt_unflatten_tree of/flattree: Reorder unflatten_dt_node of/flattree: Refactor unflatten_dt_node of/flattree: Add non-boottime device tree functions of/flattree: Add Kconfig for EARLY_FLATTREE ... Fix up trivial conflict in arch/sparc/prom/tree_32.c as per Grant.
2011-01-09mmc: davinci: add support for SDIO irq handlingAlagu Sankar
This patch adds support for handling SDIO interrupt on DaVinci MMC/SD controller. The patch has been tested on DM355 and DA850 EVMs with Marvell Libertas based SDIO wireless LAN card. Signed-off-by: Alagu Sankar <alagusankar@embwise.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-08mmc: fix division by zero in MMC coreLinus Walleij
The card is not always clocked and the clock frequency zero is perfectly legal, thus this code in mmc_set_data_timeout() may cause a division by zero. It will be triggered more often if you're using software clock gating but can be triggered under other conditions too. Reported-by: Pierre Tardy <tardyp@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Reviewed-by: Chris Ball <cjb@laptop.org> Cc: <stable@kernel.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-08mmc: tmio_mmc: fix CMD irq handlingArnd Hannemann
With current code card insert/eject interrupts will acknowledge outstanding commands. Normally this seems to be no problem, however if the hardware gets stuck and no interrupts for CMD_TIMEOUT or CMD_RESPEND are generated, then inserting and ejecting cards will falsely acknowledge outstanding commands from the core. This patch changes the behavior so that CMDs are only acked, if CMD_TIMEOUT or CMD_RESPEND is received. Signed-off-by: Arnd Hannemann <arnd@arndnet.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-08mmc: tmio_mmc: handle missing HW interruptsArnd Hannemann
When doing excessive hotplug, e.g., repeated insert/eject operations, the hardware may get confused to a point where no CMDTIMEOUT/CMDRESPEND interrupts are generated any more. As a result requests get stuck, e.g.: [ 360.351562] INFO: task kworker/u:0:5 blocked for more than 120 seconds. [ 360.351562] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 360.359375] kworker/u:0 D c020c2b4 0 5 2 0x00000000 [ 360.367187] Backtrace: [ 360.367187] [<c020bfb0>] (schedule+0x0/0x340) from [<c020c480>] (schedule_timeout+0x20/0x190) [ 360.375000] r8:c702fd70 r7:00000002 r6:c702e000 r5:c702fdc4 r4:7fffffff [ 360.375000] r3:c701e040 [ 360.382812] [<c020c460>] (schedule_timeout+0x0/0x190) from [<c020be78>] (wait_for_common+0xc4/0x150) [ 360.390625] r6:c702e000 r5:c702fdc4 r4:7fffffff [ 360.390625] [<c020bdb4>] (wait_for_common+0x0/0x150) from [<c020bfac>] (wait_for_completion+0x18/0x1c) [ 360.398437] [<c020bf94>] (wait_for_completion+0x0/0x1c) from [<c0185590>] (mmc_wait_for_req+0x214/0x234) [ 360.406250] [<c018537c>] (mmc_wait_for_req+0x0/0x234) from [<c01889d0>] (mmc_sd_switch+0xfc/0x114) [ 360.414062] r7:c702fe4c r6:c702fe20 r5:c7179800 r4:00fffff0 [ 360.421875] [<c01888d4>] (mmc_sd_switch+0x0/0x114) from [<c0187f70>] (mmc_sd_setup_card+0x260/0x384) [ 360.429687] [<c0187d10>] (mmc_sd_setup_card+0x0/0x384) from [<c01885e0>] (mmc_sd_init_card+0x13c/0x1e0) [ 360.437500] [<c01884a4>] (mmc_sd_init_card+0x0/0x1e0) from [<c01887a8>] (mmc_attach_sd+0x124/0x1a8) [ 360.445312] r8:c02db404 r7:ffffff92 r6:c702ff34 r5:c6007da8 r4:c6007c00 [ 360.453125] [<c0188684>] (mmc_attach_sd+0x0/0x1a8) from [<c0185140>] (mmc_rescan+0x248/0x2f0) [ 360.460937] r5:c6007da8 r4:c6007c00 [ 360.468750] [<c0184ef8>] (mmc_rescan+0x0/0x2f0) from [<c00467f0>] (process_one_work+0x1ec/0x318) [ 360.476562] r7:c6007da8 r6:00000000 r5:c710ec00 r4:c701bde0 [ 360.484375] [<c0046604>] (process_one_work+0x0/0x318) from [<c0047fb0>] (worker_thread+0x1b0/0x2cc) [ 360.492187] [<c0047e00>] (worker_thread+0x0/0x2cc) from [<c004b338>] (kthread+0x8c/0x94) [ 360.500000] [<c004b2ac>] (kthread+0x0/0x94) from [<c0037fc4>] (do_exit+0x0/0x590) [ 360.507812] r7:00000013 r6:c0037fc4 r5:c004b2ac r4:c7021f00 This patch addresses this problem by introducing timeouts for outstanding interrupts. If a hardware interrupt is missing, a soft reset will be performed to bring the hardware back to a working state. Tested with the SDHI hardware block in sh7372 / AP4EVB. Signed-off-by: Arnd Hannemann <arnd@arndnet.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-08mmc: tmio_mmc: implement SDIO IRQ supportArnd Hannemann
This patch implements SDIO IRQ support for mfds which announce the TMIO_MMC_SDIO_IRQ flag for tmio_mmc. If MMC_CAP_SDIO_IRQ is also set SDIO IRQ signalling is activated. Tested with a b43-based wireless SDIO card and sh_mobile_sdhi. Signed-off-by: Arnd Hannemann <arnd@arndnet.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-08mmc: tmio_mmc: silence compiler warningsArnd Hannemann
with "mmc: tmio: implement a bounce buffer for unaligned DMA" gcc generates the following warnings: drivers/mmc/host/tmio_mmc.c:654:6: warning: 'ret' may be used uninitialized in this function drivers/mmc/host/tmio_mmc.c:730:6: warning: 'ret' may be used uninitialized in this function This patch fixes these by setting ret to -EINVAL in the affected code paths. Signed-off-by: Arnd Hannemann <arnd@arndnet.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-08mmc: tmio_mmc: implement a bounce buffer for unaligned DMAGuennadi Liakhovetski
For example, with SDIO WLAN cards, some transfers happen with buffers at odd addresses, whereas the SH-Mobile DMA engine requires even addresses for SDHI. This patch extends the tmio driver with a bounce buffer, that is used for single entry scatter-gather lists both for sending and receiving. If we ever encounter unaligned transfers with multi-element sg lists, this patch will have to be extended. For now it just falls back to PIO in this and other unsupported cases. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-08mmc: tmio_mmc: merge the private header into the driverGuennadi Liakhovetski
drivers/mmc/host/tmio_mmc.h is only used by drivers/mmc/host/tmio_mmc.c, this needlessly complicates source-code handling. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-08mmc: tmio_mmc: fix PIO fallback on DMA descriptor allocation failureGuennadi Liakhovetski
The easiest way to fall back to PIO, when a DMA descriptor allocation fails is to disable DMA on the controller but continue with the current request in PIO mode. This way tmio_mmc_start_dma() can become void, since it cannot be failing any more. The current version is also broken: it is testing a wrong pointer and thus failing to recognise, that a descriptor allocation wasn't successful. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-08mmc: tmio_mmc: allow multi-element scatter-gather listsGuennadi Liakhovetski
The driver is capable of handling multi-element sg lists in both PIO and DMA modes. In DMA mode this also allows to use the DMA sg capability more efficiently and almost doubles the throughput. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-08mmc: Register debugfs dir before calling card probe function.Viresh Kumar
This way, the probe function may register debugfs files if it wants to. This fixes a bug with mmc_test where mmc_test_register_file_test() is called before the card's debugfs dir exists, and so it fails. Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Tested-by: Chris Ball <cjb@laptop.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-08mmc: MMC_BLOCK_MINORS should depend on MMC_BLOCK.Chris Ball
Signed-off-by: Chris Ball <cjb@laptop.org> Tested-by: Chris Ball <cjb@laptop.org> Acked-by: Olof Johansson <olof@lixom.net>
2011-01-08mmc: Explain why we make adjacent mmc_bus_{put,get} calls during rescan.Chris Ball
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-08mmc: Fix sd/sdio/mmc initialization frequency retriesAndy Ross
Rewrite and clean up mmc_rescan() to properly retry frequencies lower than 400kHz. Failures can happen both in sd_send_* calls and mmc_attach_*. Break out "mmc_rescan_try_freq" from the frequency selection loop. Symmetrize claim/release logic in mmc_attach_* API, and move the sd_send_* calls there to make mmc_rescan easier to read. Signed-off-by: Andy Ross <andy.ross@windriver.com> Reviewed-and-Tested-by: Hein Tibosch <hein_tibosch@yahoo.es> Reviewed-by: Chris Ball <cjb@laptop.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-08mmc: fix mmc_set_bus_width_ddr() call without bus-width-test capTakashi Iwai
With the bus-width test patch, mmc_set_bus_width*() isn't called properly when the driver doesn't set MMC_CAP_BUS_WIDTH and no DDR mode. This patch fixes the regression by moving the call up before the cap test. Signed-off-by: Takashi Iwai <tiwai@suse.de> Reviewed-by: Chris Ball <cjb@laptop.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-08mmc: dw_mmc: Add Synopsys DesignWare mmc host driver.Will Newton
This adds the mmc host driver for the Synopsys DesignWare mmc host controller, found in a number of embedded SoC designs. Signed-off-by: Will Newton <will.newton@imgtec.com> Reviewed-by: Matt Fleming <matt@console-pimps.org> Reviewed-by: Chris Ball <cjb@laptop.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-08mmc: add sdhci-tegra driver for Tegra SoCsOlof Johansson
SDHCI driver for Tegra. This driver plugs in as a new variant of sdhci-pltfm, using the platform data structure passed in to specify the GPIOs to use for card detect, write protect and card power enablement. Original driver (of which only the header file is left): Signed-off-by: Yvonne Yip <y@palm.com> The rest, which has been rewritten by now: Signed-off-by: Olof Johansson <olof@lixom.net> Reviewed-by: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Mike Rapoport <mike@compulab.co.il> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-08mmc: sdhci: add quirk for max len ADMA descriptorsOlof Johansson
Some controllers misparse segment length 0 as being 0, not 65536. Add a quirk to deal with it. Signed-off-by: Olof Johansson <olof@lixom.net> Reviewed-by: Chris Ball <cjb@laptop.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-08mmc: check for > 1 clk_requests when disabling gatingLinus Walleij
Since we make sure the clock is enabled in the mmc_host_clk_exit() function we should expect a reference counter of 1, not 0. Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Tested-by: Chris Ball <cjb@laptop.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-08mmc: sdhci-s3c: Support controllers with no internal clock dividerJeongbae Seo
This patch supports controllers with no internal clock divider in SDHCI, such as the s5pc210 board. The external clock divider can be used to make a proper clock because SDHCI doesn't support internal clock divider by itself. If external clock divider type is selected, some functions related to clock control will be overrided by other functions. The current clock control index is added to let you know which clock bus is used for SDHCI when overriding functions. Checking functions are added into sdhci_s3c_consider_clock, because the clock divider step is different from that of host controller. Signed-off-by: Jeongbae Seo <jeongbae.seo@samsung.com> Cc: Jaehoon Chung <jh80.chung@samsung.com> Cc: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-08mmc: sdhci-s3c: Support additional host capabilitiesJeongbae Seo
This patch adds support for additional host capabilities like SD/MMC high speed, SDHCI bus width, etc. Signed-off-by: Jeongbae Seo <jeongbae.seo@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-08mmc: sdhci: Enable bus-width test for JMicron controllersTakashi Iwai
Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-08mmc: Test bus-width for old MMC devicesAries Lee
Some old MMC devices fail with the 4/8 bits the driver tries to use exclusively. This patch adds a test for the given bus setup and falls back to the lower bit mode (until 1-bit mode) when the test fails. [Major rework and refactoring by tiwai] [Quirk addition and many fixes by prakity] Signed-off-by: Aries Lee <arieslee@jmicron.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Philip Rakity <prakity@marvell.com> Tested-by: Philip Rakity <prakity@marvell.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-08mmc: fix detection of memory part of SD-combo card with broken SDIOMichal Miroslaw
In case of failure, mmc_attach_sdio() will power off the SD bus. Power it up and reinitialize before trying SD memory detection. Reported-by: Sahitya Tummala <stummala@codeaurora.org> Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Reviewed-by: Chris Ball <cjb@laptop.org> Signed-off-by: Chris Ball <cjb@laptop.org>
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