mmc: sdhci: Allow caps[1] to be set via SDHCI_QUIRK_MISSING_CAPS
authorPhilip Rakity <prakity@marvell.com>
Thu, 28 Jun 2012 04:49:27 +0000 (21:49 -0700)
committerChris Ball <cjb@laptop.org>
Sun, 22 Jul 2012 19:25:44 +0000 (15:25 -0400)
commitbd6a8c30faf19b4e7abace93fb89efd6d72607ec
treef527fbf080402c10f09076859156862fd49bf52a
parent4dc5a79f1350718ac31e4ab87eebce112b117a34
mmc: sdhci: Allow caps[1] to be set via SDHCI_QUIRK_MISSING_CAPS

Currently only the capability_0 register can be set if
SDHCI_QUIRK_MISSING_CAPS is defined.  This is a problem when
the capability_1 register also needs changing.  Use the quirk
SDHCI_QUIRK_MISSING_CAPS to allow both registers to be set.

Redefining caps[1] is useful when the board design does not
support 1.8v vccq so UHS modes are not available.  The code that
calls sdhci_add_host can then detect this condition and adjust
the caps so the UHS mode will not be attempted on UHS cards.

Signed-off-by: Philip Rakity <prakity@marvell.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
drivers/mmc/host/sdhci.c
include/linux/mmc/sdhci.h