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| author | Anton Vorontsov <avorontsov@ru.mvista.com> | 2009-03-17 00:13:52 +0300 |
|---|---|---|
| committer | Pierre Ossman <drzeus@drzeus.cx> | 2009-03-24 21:30:08 +0100 |
| commit | 68d1fb7e229c6f95be4fbbe3eb46b24e41184924 (patch) | |
| tree | 09e60a2e1e5b3569dd309348a8c164c859c89671 /kernel | |
| parent | 6aa943ab8994fe6e4ccba22c5bc8150a84268bdd (diff) | |
sdhci: Add support for card-detection polling
This patch adds SDHCI_QUIRK_BROKEN_CARD_DETECTION quirk. When specified,
sdhci driver will set MMC_CAP_NEEDS_POLL MMC host capability, and won't
enable card insert/remove interrupts.
This is needed for hosts with unreliable card detection, such as FSL
eSDHC. The original eSDHC driver was tring to "debounce" card-detection
IRQs by reading present state and disabling particular interrupts. But
with this debouncing scheme I noticed that sometimes we miss card
insertion/removal events.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions