Make the mmc bus uevent callback look like all other subsystems.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

The problem is that the sdio_bus must be registered before any SDIO
drivers are registered against it otherwise the kernel sulks.  Because
the sdio_bus registration happens through module_init (equivalent to
device_initcall), then any SDIO
drivers linked before the SDIO core code in the kernel will be initialized
first.

Upcoming SDIO function drivers are likely to be located outside the
drivers/mmc directory as it is common practice to group drivers according
to their function rather than the bus they use.  SDIO drivers are therefore
likely to appear at random location in the kernel link.

To make sure the sdio_bus is always initialized before any SDIO drivers,
let's move the MMC init to the subsys_initcall level.
Signed-off-by: NNicolas Pitre <npitre@mvista.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Add a more clean separation between global, common CIS information
and the function specific one as we need the common information in
places where no specific function is specified.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

This way those tuples that the core cares about are consumed by the core
code, and tuples that only function drivers might make sense of are
available to drivers.
Signed-off-by: NNicolas Pitre <npitre@mvista.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Signed-off-by: NNicolas Pitre <npitre@mvista.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Like many other buses, the devices (functions) on the SDIO bus
must be enabled before they can be used. Add functions that allow
drivers to do so.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Add command wrappers that simplify register access from SDIO
function drivers.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Add basic driver handling to the SDIO device model.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Add the sdio bus type and basic device handling.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Really basic init sequence for SDIO cards.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Some printk:s were missing an explicit level.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

The write parameter in mmc_set_data_timeout() is redundant as the
data structure contains information about the direction of the
transfer.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Make sure we do not try to parse a structure we do not
understand.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Now that we use "normal" error codes, improve the reporting and response
to error codes in the core.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Convert the MMC layer to use standard error codes and not its own,
incompatible values.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

 drivers/mmc/core/host.c | 3509 -> 3457 (-52 bytes)
 drivers/mmc/core/host.o | 92400 -> 92136 (-264 bytes)
Signed-off-by: NMariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

 drivers/mmc/core/bus.c | 5663 -> 5619 (-44 bytes)
 drivers/mmc/core/bus.o | 70899 -> 70731 (-168 bytes)
Signed-off-by: NMariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

This patch makes the following needlessly global functions static:
- sd_ops.c: mmc_app_cmd()
- core.c: __mmc_release_bus()
- core.c: mmc_start_request()
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Some printk:s were missing an explicit level.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Make sure that the debugging output in the core is complete.
This should allow us to clean up all the extra debug output
that each and every other host driver seems to contain.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Let the user know that the kernel actually detected the card
by printing some basic information in dmesg.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

When the card has been added to the device model, it might be bound
to a card driver. Therefore, we have to release the host lock when
trying to remove it as we otherwise might deadlock with the driver.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

In the normal case, the host lock can be claimed directly.
When it cannot, the caller will sleep. Make sure we don't
have any latent bugs by always calling might_sleep().
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Make sure the kerneldoc comments are up to date and relevant.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Make sure all headers in the files reflect their true position
in the tree.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Move basic host class device handling to its own file for clarity.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Move bus operations to its own file for the sake of clarity. Also
delegate sysfs attributes to bus handlers in preparation for other
more exotic types.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Somehow the code to read the read-only switch of SD cards got lost
in the reorganisation.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Make sure we don't call the switch function on cards too old to
support it. They should just ignore it, but some have been reported
to lock up instead.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Fix a broken if clause which was causing SD cards to go into
4-bit mode even if the host did not support it.

(Reported by David Brownell and Marc Pignat)
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Cc: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

As mmc_detect_change() can be called from irq context, using
claim (which can sleep) is inherently unsafe. Use the host
spinlock instead, which also is faster.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Change Kconfig objects from "menu, config" into "menuconfig" so
that the user can disable the whole feature without having to
enter the menu first.
Signed-off-by: NJan Engelhardt <jengelh@gmx.de>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Remove card states that no longer make any sense.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>