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| author | Anton Vorontsov <avorontsov@ru.mvista.com> | 2009-03-17 00:14:02 +0300 |
|---|---|---|
| committer | Pierre Ossman <drzeus@drzeus.cx> | 2009-03-24 21:30:10 +0100 |
| commit | 063a9dbbce5559770b7e2e2f51bd29adf3ab9b1e (patch) | |
| tree | 232a9b438c7d0f7649088a31b0b89ef2b61f4205 /drivers/mmc/host/sdhci.c | |
| parent | 3e3bf20756aeee57a40fd37b923263c9a51b8c68 (diff) | |
| download | lwn-063a9dbbce5559770b7e2e2f51bd29adf3ab9b1e.tar.gz lwn-063a9dbbce5559770b7e2e2f51bd29adf3ab9b1e.zip | |
sdhci: Add quirk for controllers that need IRQ re-init after reset
FSL eSDHC controllers losing signal/interrupt enable states after
reset, so we should re-enable them.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Diffstat (limited to 'drivers/mmc/host/sdhci.c')
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index cd6dab34ba54..3a72fe2cf1cf 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -134,6 +134,7 @@ static void sdhci_disable_card_detection(struct sdhci_host *host) static void sdhci_reset(struct sdhci_host *host, u8 mask) { unsigned long timeout; + u32 uninitialized_var(ier); if (host->quirks & SDHCI_QUIRK_NO_CARD_NO_RESET) { if (!(sdhci_readl(host, SDHCI_PRESENT_STATE) & @@ -141,6 +142,9 @@ static void sdhci_reset(struct sdhci_host *host, u8 mask) return; } + if (host->quirks & SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET) + ier = sdhci_readl(host, SDHCI_INT_ENABLE); + sdhci_writeb(host, mask, SDHCI_SOFTWARE_RESET); if (mask & SDHCI_RESET_ALL) @@ -160,6 +164,9 @@ static void sdhci_reset(struct sdhci_host *host, u8 mask) timeout--; mdelay(1); } + + if (host->quirks & SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET) + sdhci_clear_set_irqs(host, SDHCI_INT_ALL_MASK, ier); } static void sdhci_init(struct sdhci_host *host) |