sdhci: Enable only relevant (DMA/PIO) interrupts during transfers

[linux-2.6-omap-h63xx.git] / drivers / mmc / host / sdhci.c

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index bd5acfb0c1b826f00c1478ca9b0b33b7d5e9df7a..6fbbc005dd7f39d515bbe70e06c38917f73575da 100644 (file)
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -167,9 +167,7 @@ static void sdhci_init(struct sdhci_host *host)
                SDHCI_INT_BUS_POWER | SDHCI_INT_DATA_END_BIT |
                SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_INDEX |
                SDHCI_INT_END_BIT | SDHCI_INT_CRC | SDHCI_INT_TIMEOUT |
-               SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL |
-               SDHCI_INT_DMA_END | SDHCI_INT_DATA_END | SDHCI_INT_RESPONSE |
-               SDHCI_INT_ADMA_ERROR);
+               SDHCI_INT_DATA_END | SDHCI_INT_RESPONSE);
 }
 
 static void sdhci_reinit(struct sdhci_host *host)
@@ -603,6 +601,17 @@ static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_data *data)
        return count;
 }
 
+static void sdhci_set_transfer_irqs(struct sdhci_host *host)
+{
+       u32 pio_irqs = SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL;
+       u32 dma_irqs = SDHCI_INT_DMA_END | SDHCI_INT_ADMA_ERROR;
+
+       if (host->flags & SDHCI_REQ_USE_DMA)
+               sdhci_clear_set_irqs(host, pio_irqs, dma_irqs);
+       else
+               sdhci_clear_set_irqs(host, dma_irqs, pio_irqs);
+}
+
 static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data)
 {
        u8 count;
@@ -751,6 +760,8 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data)
                host->blocks = data->blocks;
        }
 
+       sdhci_set_transfer_irqs(host);
+
        /* We do not handle DMA boundaries, so set it to max (512 KiB) */
        sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, data->blksz), SDHCI_BLOCK_SIZE);
        sdhci_writew(host, data->blocks, SDHCI_BLOCK_COUNT);