mmc: sdhci: Define ADMA descriptor structure
Define the ADMA descriptor structure instead of
using manual offsets and casts.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 11b6217..ec09349 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -448,23 +448,18 @@
static void sdhci_adma_write_desc(void *desc, u32 addr, int len, unsigned cmd)
{
- __le32 *dataddr = (__le32 __force *)(desc + 4);
- __le16 *cmdlen = (__le16 __force *)desc;
+ struct sdhci_adma2_32_desc *dma_desc = desc;
- /* SDHCI specification says ADMA descriptors should be 4 byte
- * aligned, so using 16 or 32bit operations should be safe. */
-
- cmdlen[0] = cpu_to_le16(cmd);
- cmdlen[1] = cpu_to_le16(len);
-
- dataddr[0] = cpu_to_le32(addr);
+ dma_desc->cmd = cpu_to_le16(cmd);
+ dma_desc->len = cpu_to_le16(len);
+ dma_desc->addr = cpu_to_le32(addr);
}
static void sdhci_adma_mark_end(void *desc)
{
- u8 *dma_desc = desc;
+ struct sdhci_adma2_32_desc *dma_desc = desc;
- dma_desc[0] |= ADMA2_END;
+ dma_desc->cmd |= cpu_to_le16(ADMA2_END);
}
static int sdhci_adma_table_pre(struct sdhci_host *host,
@@ -2297,23 +2292,20 @@
{
const char *name = mmc_hostname(host->mmc);
void *desc = host->adma_table;
- __le32 *dma;
- __le16 *len;
- u8 attr;
sdhci_dumpregs(host);
while (true) {
- dma = (__le32 *)(desc + 4);
- len = (__le16 *)(desc + 2);
- attr = *(u8 *)desc;
+ struct sdhci_adma2_32_desc *dma_desc = desc;
DBG("%s: %p: DMA 0x%08x, LEN 0x%04x, Attr=0x%02x\n",
- name, desc, le32_to_cpu(*dma), le16_to_cpu(*len), attr);
+ name, desc, le32_to_cpu(dma_desc->addr),
+ le16_to_cpu(dma_desc->len),
+ le16_to_cpu(dma_desc->cmd));
desc += host->desc_sz;
- if (attr & ADMA2_END)
+ if (dma_desc->cmd & cpu_to_le16(ADMA2_END))
break;
}
}