diff options
Diffstat (limited to 'drivers/mci/sdhci.c')
| -rw-r--r-- | drivers/mci/sdhci.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/mci/sdhci.c b/drivers/mci/sdhci.c index 2cdd3c3c8f..635884e2a2 100644 --- a/drivers/mci/sdhci.c +++ b/drivers/mci/sdhci.c @@ -124,6 +124,33 @@ void sdhci_set_bus_width(struct sdhci *host, int width) #endif +int sdhci_wait_for_done(struct sdhci *sdhci, u32 mask) +{ + u64 start = get_time_ns(); + u32 stat; + + do { + stat = sdhci_read32(sdhci, SDHCI_INT_STATUS); + + if (stat & SDHCI_INT_TIMEOUT) + return -ETIMEDOUT; + + if (stat & SDHCI_INT_ERROR) { + dev_err(sdhci->mci->hw_dev, "SDHCI_INT_ERROR: 0x%08x\n", + stat); + return -EPERM; + } + + if (is_timeout(start, 1000 * MSECOND)) { + dev_err(sdhci->mci->hw_dev, + "SDHCI timeout while waiting for done\n"); + return -ETIMEDOUT; + } + } while ((stat & mask) != mask); + + return 0; +} + void sdhci_setup_data_pio(struct sdhci *sdhci, struct mci_data *data) { if (!data) |