diff options
| author | Joe Hershberger <joe.hershberger@ni.com> | 2012-08-17 10:18:55 +0000 |
|---|---|---|
| committer | Andy Fleming <afleming@freescale.com> | 2012-09-05 17:33:25 -0500 |
| commit | 470dcc7511431db4210a79ea4e6b14cf109a24dc (patch) | |
| tree | 44b636911e65911f781519fe7cb855ca2ba9084c /drivers/mmc | |
| parent | 073cfd1c040b9cce9289cacf4d4963460322dc2b (diff) | |
mmc: Add a SDHCI quirk for boards that have no CD
Some boards have no Card Detect wired. In that case, set the CD test
bits in the standard interface.
Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/sdhci.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index b07dc0064e7..3bb0ad0491e 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -381,12 +381,25 @@ int sdhci_init(struct mmc *mmc) } } + sdhci_set_power(host, fls(mmc->voltages) - 1); + + if (host->quirks & SDHCI_QUIRK_NO_CD) { + unsigned int status; + + sdhci_writel(host, SDHCI_CTRL_CD_TEST_INS | SDHCI_CTRL_CD_TEST, + SDHCI_HOST_CONTROL); + + status = sdhci_readl(host, SDHCI_PRESENT_STATE); + while ((!(status & SDHCI_CARD_PRESENT)) || + (!(status & SDHCI_CARD_STATE_STABLE)) || + (!(status & SDHCI_CARD_DETECT_PIN_LEVEL))) + status = sdhci_readl(host, SDHCI_PRESENT_STATE); + } + /* Eable all state */ sdhci_writel(host, SDHCI_INT_ALL_MASK, SDHCI_INT_ENABLE); sdhci_writel(host, SDHCI_INT_ALL_MASK, SDHCI_SIGNAL_ENABLE); - sdhci_set_power(host, fls(mmc->voltages) - 1); - return 0; } |