diff options
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 50 |
1 files changed, 20 insertions, 30 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index c279fbc4c2e..fcdd0078503 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -376,6 +376,20 @@ static void sdhci_kunmap_atomic(void *buffer, unsigned long *flags) local_irq_restore(*flags); } +static void sdhci_set_adma_desc(u8 *desc, u32 addr, int len, unsigned cmd) +{ + desc[7] = (addr >> 24) & 0xff; + desc[6] = (addr >> 16) & 0xff; + desc[5] = (addr >> 8) & 0xff; + desc[4] = (addr >> 0) & 0xff; + + desc[3] = (len >> 8) & 0xff; + desc[2] = (len >> 0) & 0xff; + + desc[0] = cmd & 0xff; + desc[1] = cmd >> 8; +} + static int sdhci_adma_table_pre(struct sdhci_host *host, struct mmc_data *data) { @@ -443,19 +457,11 @@ static int sdhci_adma_table_pre(struct sdhci_host *host, sdhci_kunmap_atomic(buffer, &flags); } - desc[7] = (align_addr >> 24) & 0xff; - desc[6] = (align_addr >> 16) & 0xff; - desc[5] = (align_addr >> 8) & 0xff; - desc[4] = (align_addr >> 0) & 0xff; + /* tran, valid */ + sdhci_set_adma_desc(desc, align_addr, offset, 0x21); BUG_ON(offset > 65536); - desc[3] = (offset >> 8) & 0xff; - desc[2] = (offset >> 0) & 0xff; - - desc[1] = 0x00; - desc[0] = 0x21; /* tran, valid */ - align += 4; align_addr += 4; @@ -465,19 +471,10 @@ static int sdhci_adma_table_pre(struct sdhci_host *host, len -= offset; } - desc[7] = (addr >> 24) & 0xff; - desc[6] = (addr >> 16) & 0xff; - desc[5] = (addr >> 8) & 0xff; - desc[4] = (addr >> 0) & 0xff; - BUG_ON(len > 65536); - desc[3] = (len >> 8) & 0xff; - desc[2] = (len >> 0) & 0xff; - - desc[1] = 0x00; - desc[0] = 0x21; /* tran, valid */ - + /* tran, valid */ + sdhci_set_adma_desc(desc, addr, len, 0x21); desc += 8; /* @@ -490,16 +487,9 @@ static int sdhci_adma_table_pre(struct sdhci_host *host, /* * Add a terminating entry. */ - desc[7] = 0; - desc[6] = 0; - desc[5] = 0; - desc[4] = 0; - - desc[3] = 0; - desc[2] = 0; - desc[1] = 0x00; - desc[0] = 0x03; /* nop, end, valid */ + /* nop, end, valid */ + sdhci_set_adma_desc(desc, 0, 0, 0x3); /* * Resync align buffer as we might have changed it. |