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mmc: sdhci: Allow caps[1] to be set via SDHCI_QUIRK_MISSING_CAPS

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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>
This commit is contained in:
Philip Rakity
2012-06-27 21:49:27 -07:00
committed by Chris Ball
parent 4dc5a79f13
commit bd6a8c30fa
2 changed files with 7 additions and 4 deletions
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3
include/linux/mmc/sdhci.h
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@@ -155,7 +155,8 @@ struct sdhci_host {
struct timer_list timer; /* Timer for timeouts */
unsigned int caps; /* Alternative capabilities */
unsigned int caps; /* Alternative CAPABILITY_0 */
unsigned int caps1; /* Alternative CAPABILITY_1 */
unsigned int ocr_avail_sdio; /* OCR bit masks */
unsigned int ocr_avail_sd;