diff options
| -rw-r--r-- | drivers/mmc/tegra2_mmc.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/mmc/tegra2_mmc.c b/drivers/mmc/tegra2_mmc.c index 2bea07d..159cef1 100644 --- a/drivers/mmc/tegra2_mmc.c +++ b/drivers/mmc/tegra2_mmc.c @@ -270,9 +270,16 @@ static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, __func__, mask); return -1; } else if (mask & TEGRA_MMC_NORINTSTS_DMA_INTERRUPT) { - /* DMA Interrupt */ + /* + * DMA Interrupt, restart the transfer where + * it was interrupted. + */ + unsigned int address = readl(&host->reg->sysad); + debug("DMA end\n"); - break; + writel(TEGRA_MMC_NORINTSTS_DMA_INTERRUPT, + &host->reg->norintsts); + writel(address, &host->reg->sysad); } else if (mask & TEGRA_MMC_NORINTSTS_XFER_COMPLETE) { /* Transfer Complete */ debug("r/w is done\n"); @@ -419,6 +426,7 @@ static int mmc_core_init(struct mmc *mmc) * NORMAL Interrupt Status Enable Register init * [5] ENSTABUFRDRDY : Buffer Read Ready Status Enable * [4] ENSTABUFWTRDY : Buffer write Ready Status Enable + * [3] ENSTADMAINT : DMA boundary interrupt * [1] ENSTASTANSCMPLT : Transfre Complete Status Enable * [0] ENSTACMDCMPLT : Command Complete Status Enable */ @@ -426,6 +434,7 @@ static int mmc_core_init(struct mmc *mmc) mask &= ~(0xffff); mask |= (TEGRA_MMC_NORINTSTSEN_CMD_COMPLETE | TEGRA_MMC_NORINTSTSEN_XFER_COMPLETE | + TEGRA_MMC_NORINTSTSEN_DMA_INTERRUPT | TEGRA_MMC_NORINTSTSEN_BUFFER_WRITE_READY | TEGRA_MMC_NORINTSTSEN_BUFFER_READ_READY); writel(mask, &host->reg->norintstsen); |