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path: root/drivers/mmc/mv_sdhci.c
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Diffstat (limited to 'drivers/mmc/mv_sdhci.c')
-rw-r--r--drivers/mmc/mv_sdhci.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/mmc/mv_sdhci.c b/drivers/mmc/mv_sdhci.c
index 9e59951..f92caeb 100644
--- a/drivers/mmc/mv_sdhci.c
+++ b/drivers/mmc/mv_sdhci.c
@@ -2,6 +2,33 @@
#include <malloc.h>
#include <sdhci.h>
+#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
+static struct sdhci_ops mv_ops;
+
+#if defined(CONFIG_SHEEVA_88SV331xV5)
+#define SD_CE_ATA_2 0xEA
+#define MMC_CARD 0x1000
+#define MMC_WIDTH 0x0100
+static inline void mv_sdhci_writeb(struct sdhci_host *host, u8 val, int reg)
+{
+ struct mmc *mmc = host->mmc;
+ u32 ata = (u32)host->ioaddr + SD_CE_ATA_2;
+
+ if (!IS_SD(mmc) && reg == SDHCI_HOST_CONTROL) {
+ if (mmc->bus_width == 8)
+ writew(readw(ata) | (MMC_CARD | MMC_WIDTH), ata);
+ else
+ writew(readw(ata) & ~(MMC_CARD | MMC_WIDTH), ata);
+ }
+
+ writeb(val, host->ioaddr + reg);
+}
+
+#else
+#define mv_sdhci_writeb NULL
+#endif /* CONFIG_SHEEVA_88SV331xV5 */
+#endif /* CONFIG_MMC_SDHCI_IO_ACCESSORS */
+
static char *MVSDH_NAME = "mv_sdh";
int mv_sdh_init(u32 regbase, u32 max_clk, u32 min_clk, u32 quirks)
{
@@ -15,6 +42,12 @@ int mv_sdh_init(u32 regbase, u32 max_clk, u32 min_clk, u32 quirks)
host->name = MVSDH_NAME;
host->ioaddr = (void *)regbase;
host->quirks = quirks;
+#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
+ memset(&mv_ops, 0, sizeof(struct sdhci_ops));
+ if (mv_sdhci_writeb != NULL)
+ mv_ops.write_b = mv_sdhci_writeb;
+ host->ops = &mv_ops;
+#endif
host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
add_sdhci(host, max_clk, min_clk);
return 0;