Signed-off-by: NAndi Kleen <ak@linux.intel.com>
Cc: Chris Ball <cjb@laptop.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

module_pci_driver makes the code simpler by eliminating
module_init and module_exit calls.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NChris Ball <cjb@laptop.org>

At http://dev.laptop.org/ticket/11980 we have determined that the
Marvell CaFe SDHCI controller reports bad card presence during
resume. It reports that no card is present even when it is.
This is a regression -- resume worked back around 2.6.37.

Around 400ms after resuming, a "card inserted" interrupt is
generated, at which point it starts reporting presence.

Work around this hardware oddity by setting the
SDHCI_QUIRK_BROKEN_CARD_DETECTION flag.
Thanks to Chris Ball for helping with diagnosis.
Signed-off-by: NDaniel Drake <dsd@laptop.org>
[stable@: please apply to 3.0+]
Cc: <stable@vger.kernel.org>
Signed-off-by: NChris Ball <cjb@laptop.org>

This reverts commit e6039832.
There are reports of MSI breaking SDHCI on multiple chipsets (JMicron
and O2Micro, at least), so this should be reverted until we come up
with a whitelist or something.
Signed-off-by: NChris Ball <cjb@laptop.org>

This reverts commit c16e981b2fd9455af670a69a84f4c8cf07e12658, because
it's no longer useful once MSI support is reverted.
Signed-off-by: NChris Ball <cjb@laptop.org>

MSI on my O2Micro OZ600 SD card reader is broken.  This patch adds a quirk
to disable MSI on these controllers.
Signed-off-by: NManuel Lauss <manuel.lauss@googlemail.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

Signed-off-by: NAlexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

Signed-off-by: NAlexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

SDIO is powered separately from the host controller, so the card can
remain on while the host controller is powered off during suspend.
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

Set Medfield SDIO as non-removable to avoid un-necessary
card detect activity.
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

Runtime PM for SDIO is no longer enabled by default (see
5c7f0e08) so it must now
be enabled per platform, in this case Medfield uses it.
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

Even if a driver provides separate card detection, an interrupt
is still needed to abort mmc requests that are in progress.
SDHCI_QUIRK2_OWN_CARD_DETECTION prevents that, so remove it.
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

Retrieve the GPIO numbers for hardware reset and
card detect from platform data.
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

Add a means of getting platform data for the SDHCI PCI
devices.  The data is stored against the slot not the
device in order to support multi-slot devices.

The data allows platform-specific setup (such as getting
GPIO numbers from firmware or setting up wl12xx for SDIO)
to be done in platform support files instead of the
sdhci-pci driver.
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

Drop the "state" argument from sdhci_suspend_host.  Its only user is the
PCI glue;  this allows to move all SDHCI glues to use dev_pm_ops instead.
Signed-off-by: NManuel Lauss <manuel.lauss@googlemail.com>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

Only allow runtime PM for devices that specifically indicate
that they support it.
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

Ths patch allows runtime PM for sdhci-pci, runtime suspending after
inactivity of 50ms and ensuring runtime resume before SDHC registers
are accessed.  During runtime suspend, interrupts are masked.
The host controller state is restored at runtime resume.

For Medfield, the host controller's card detect mechanism is
supplanted by an always-on GPIO which provides for card detect wake-up.
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

We are cleaning up the implicit presence of module.h; these guys are
some of the people who just assume it will be there.  Call it out
explitly for those that really need it.
Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

Intel Medfield platform blocks access to eMMC boot partitions which
results in switch errors.  Since there is no access, mmcboot0/1
devices should not be created.  Add a host capability to reflect that.
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

Implement eMMC hardware reset for Medfield.
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

Unless MMC_CAP_8_BIT_DATA is set, the bus width defaults to 4.
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

And hook platform_8bit_width to support 8-bit bus width.
Signed-off-by: NMajor Lee <major_lee@wistron.com>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NDirk Brandewie <dirk.brandewie@gmail.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

On HP laptops with JMicron 388 chip, the write-locked SD card isn't
detected correctly as read-only in many cases.  This is because the
PRESENT_STATE register becomes unsable just after plugging, and it
returns the WRITE_PROTECT bit wrongly at the first read.

This patch fixes the read-only detection by adding a new sdhci quirk
indicating to check the register more intensively with a relatively
long delay.

The patch is tested with 2.6.39-rc4 kernel.

Cc: Aries Lee <arieslee@jmicron.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NChris Ball <cjb@laptop.org>

This patch fixes 21 errors and 6 warnings reported by checkpatch.pl.
Signed-off-by: NAmeya Palande <2ameya@gmail.com>
Reviewed-by: NWolfram Sang <w.sang@pengutronix.de>
Signed-off-by: NChris Ball <cjb@laptop.org>

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: NChris Ball <cjb@laptop.org>
Cc: <stable@kernel.org>

The SDHCI driver uses PCI_CLASS_REVISION instead of PCI_REVISION_ID, so
it was not converted by commit 44c10138
(PCI: Change all drivers to use pci_device->revision). The newer VIA
driver has similar code too. This patch converts both drivers to use
the 'revision' field of 'struct pci_dev'.
Signed-off-by: NSergei Shtylyov <sshtylyov@ru.mvista.com>
Acked-by: NHarald Welte <HaraldWelte@viatech.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

drivers/mmc/host/sdhci-pci.c: In function ‘sdhci_pci_probe_slot’:
drivers/mmc/host/sdhci-pci.c:913:18: warning: variable ‘addr’ set but
not used [-Wunused-but-set-variable]
Signed-off-by: NChris Ball <cjb@laptop.org>
Acked-by: NWolfram Sang <w.sang@pengutronix.de>

Signed-off-by: NManoj Iyer <manoj.iyer@canonical.com>
Cc: <stable@kernel.org>
Signed-off-by: NChris Ball <cjb@laptop.org>

Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NChris Ball <cjb@laptop.org>

JMicron 388 SD/MMC combo controller supports the 1.8V low-voltage for
SD, but MMC doesn't work with the low-voltage, resulting in an error
at probing.

This patch adds the support for multiple voltage mask per device type,
so that SD works with 1.8V while MMC forces 3.3V.  Here new ocr_avail_*
fields for each device are introduced, so that the actual OCR mask is
switched dynamically.

Also, the restriction of low-voltage in core/sd.c is removed when the
bit is allowed explicitly via ocr_avail_sd mask.

This patch was rewritten from scratch based on Aries' original code.
Signed-off-by: NAries Lee <arieslee@jmicron.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Reviewed-by: NChris Ball <cjb@laptop.org>
Signed-off-by: NChris Ball <cjb@laptop.org>

This patch disables the broken ADMA on selected O2Micro devices.
Signed-off-by: NJennifer Li <Jennifer.li@o2micro.com>
Reviewed-by: NChris Ball <cjb@laptop.org>
Signed-off-by: NChris Ball <cjb@laptop.org>

SDHC2 is newly added in C0 stepping of Langwell. Without the Moorestown
specific quirk, the default pci_probe will be called and crash the kernel.

This patch unblocks the crash problem on C0 by using the same probing
function as HC1, which limits the number of slots to one.
Signed-off-by: NJacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

A little more work was needed for SDIO IRQ wakeups to be functional.

Wake-on-WLAN on the SD WiFi adapter in the XO-1.5 laptop is now working.
Signed-off-by: NDaniel Drake <dsd@laptop.org>
Signed-off-by: NChris Ball <cjb@laptop.org>

This adds the basic identifiers. Due to the various chip quirks it's not
enough to make MRST support very useful for earlier steppings but that can
follow.

(I'm currently trying to verify which steps actually matter outside Intel
 so I can avoid unneeded stuff going upstream)

[Extracted from original development]
Signed-off-by: NJiebingLi <jiebing.li@intel.com>
[Folds in fixes]
Signed-off-by: NChuanxiao Dong <chuanxiao.dong@intel.com>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

Basic support for the Intel Medfield devices

Give them their own quirks as we will need to update this later.
Signed-off-by: NXiaochen Shen <xiaochen.shen@intel.com>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

Currently we write it to the chip data, but if the probe handler overrides
it we ignore the new value and keep using our cached one. Fix this so that
a probe handler can adjust the slot count.
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

Signed-off-by: NPablo Castillo <CyberCastle@gmail.com>
Signed-off-by: NStanislaw Gruszka <sgruszka@redhat.com>
Tested-by: NGregg Lebovitz <gregg@lebovitz.net>
Cc: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

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: NMaxim Levitsky <maximlevitsky@gmail.com>
Cc: Andrew de Quincey <adq_dvb@lidskialf.net>
Acked-by: NPhilip Langdale <philipl@overt.org>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>