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mmc: sdhci: only set 200mA support for 1.8v if 200mA is available

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max_current_caps can return 0 if not available from the sd controller.
If no regulator is present or the regulator specifies a current
less then 200ma, we no longer still set the 200mA caps bit anyway.

Signed-off-by: Philip Rakity <prakity@marvell.com>
Reviewed-by: Aaron Lu <aaron_lu@amd.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Philip Rakity 2012-05-27 18:36:33 -07:00 • committed by Chris Ball
parent bad37e1ac6
commit 0aa6770000
3 changed files with 14 additions and 12 deletions
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1
include/linux/mmc/card.h
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@ -149,6 +149,7 @@ struct sd_switch_caps {
#define SD_SET_CURRENT_LIMIT_400 1
#define SD_SET_CURRENT_LIMIT_600 2
#define SD_SET_CURRENT_LIMIT_800 3
#define SD_SET_CURRENT_NO_CHANGE (-1)
#define SD_MAX_CURRENT_200 (1 << SD_SET_CURRENT_LIMIT_200)
#define SD_MAX_CURRENT_400 (1 << SD_SET_CURRENT_LIMIT_400)