Commit Graph

6 Commits

Author SHA1 Message Date
Andrei Warkentin
32780cd135 mmc: quirks: Extends card quirks with MMC/SD quirks matching the CID.
The current mechanism is SDIO-only. This allows us to create
function-specific quirks, without creating messy Kconfig dependencies,
or polluting core/ with function-specific code.

Signed-off-by: Andrei Warkentin <andreiw@motorola.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-05-24 21:00:54 -04:00
Ohad Ben-Cohen
14e7dc76f2 mmc: quirks: wl1271 is MMC_QUIRK_DISABLE_CD
The wl12xx device supports disconnecting the pull-up resistor on
CD/DAT[3] (pin 1) of the card.

Tell SDIO core to disconnect that resistor during card init,
since we don't need it at that point (and anyway all
hosts shall provide pull-up resistors on all data lines DAT[3:0]
as described in section 6 of the SD physical specification).

As a result, this may save some power, but it's also generally healthy
since it prevents both ends from pulling up that pin, which
results in undesirable asymmetric physical bus.

Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-05-24 21:00:05 -04:00
Ohad Ben-Cohen
0b4043d70a mmc: quirks: wl1271 is MMC_QUIRK_NONSTD_FUNC_IF
Tell SDIO core to ignore the standard SDIO function interface
codes indicated by the wl1271. This is required because the
wl1271 erroneously indicates its first function as a standard
Bluetooth SDIO interface, and that drives btsdio mad.

Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-05-24 20:59:56 -04:00
Pierre Tardy
12f8ef8fb2 mmc: remove BROKEN_CLK_GATING quirk for wl1271
This sdio card supports having its sdio clock shutdown.
It is also not using the SDIO IRQ, but rather uses a side gpio irq.

Signed-off-by: Pierre Tardy <tardyp@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-15 13:48:37 -04:00
Pierre Tardy
db9935000d mmc: add MMC_QUIRK_BROKEN_CLK_GATING
Some sdio card are not following sdio standard, and do not work
when the sdio bus's clock is gated.

To keep functionnality for all legacy driver, we turn this quirk on
for every sdio card.
Drivers needs to disable the quirk manually when someone verifies that
their supported card works with clock gating.

Signed-off-by: Pierre Tardy <tardyp@gmail.com>
Acked-by: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-15 13:48:35 -04:00
Pierre Tardy
57f0adc7ea mmc: add per device quirk placeholder
Some cards have quirks valid for every platforms using current
platform quirk hooks leads to a lot of code and debug duplication.

So we inspire a bit from what exists in PCI subsystem and do our own
per vendorid/deviceid quirk.  We still drop the complexity of the pci
quirk system (with special section tables, and so on).
That can be added later if needed.

Signed-off-by: Pierre Tardy <pierre.tardy@intel.com>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Acked-by: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-15 13:48:33 -04:00