sdhci: Add support for bus-specific IO memory accessors

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

diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 43c37c68d07af44c15ab89bb372730b13517be5a..d9733f8410615ba8937293570b36bc62e91b7802 100644 (file)
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -10,6 +10,9 @@
  */
 
 #include <linux/scatterlist.h>
+#include <linux/compiler.h>
+#include <linux/types.h>
+#include <linux/io.h>
 
 /*
  * Controller registers
@@ -267,9 +270,101 @@ struct sdhci_host {
 
 
 struct sdhci_ops {
+#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
+       u32             (*readl)(struct sdhci_host *host, int reg);
+       u16             (*readw)(struct sdhci_host *host, int reg);
+       u8              (*readb)(struct sdhci_host *host, int reg);
+       void            (*writel)(struct sdhci_host *host, u32 val, int reg);
+       void            (*writew)(struct sdhci_host *host, u16 val, int reg);
+       void            (*writeb)(struct sdhci_host *host, u8 val, int reg);
+#endif
+
        int             (*enable_dma)(struct sdhci_host *host);
 };
 
+#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
+
+static inline void sdhci_writel(struct sdhci_host *host, u32 val, int reg)
+{
+       if (unlikely(host->ops->writel))
+               host->ops->writel(host, val, reg);
+       else
+               writel(val, host->ioaddr + reg);
+}
+
+static inline void sdhci_writew(struct sdhci_host *host, u16 val, int reg)
+{
+       if (unlikely(host->ops->writew))
+               host->ops->writew(host, val, reg);
+       else
+               writew(val, host->ioaddr + reg);
+}
+
+static inline void sdhci_writeb(struct sdhci_host *host, u8 val, int reg)
+{
+       if (unlikely(host->ops->writeb))
+               host->ops->writeb(host, val, reg);
+       else
+               writeb(val, host->ioaddr + reg);
+}
+
+static inline u32 sdhci_readl(struct sdhci_host *host, int reg)
+{
+       if (unlikely(host->ops->readl))
+               return host->ops->readl(host, reg);
+       else
+               return readl(host->ioaddr + reg);
+}
+
+static inline u16 sdhci_readw(struct sdhci_host *host, int reg)
+{
+       if (unlikely(host->ops->readw))
+               return host->ops->readw(host, reg);
+       else
+               return readw(host->ioaddr + reg);
+}
+
+static inline u8 sdhci_readb(struct sdhci_host *host, int reg)
+{
+       if (unlikely(host->ops->readb))
+               return host->ops->readb(host, reg);
+       else
+               return readb(host->ioaddr + reg);
+}
+
+#else
+
+static inline void sdhci_writel(struct sdhci_host *host, u32 val, int reg)
+{
+       writel(val, host->ioaddr + reg);
+}
+
+static inline void sdhci_writew(struct sdhci_host *host, u16 val, int reg)
+{
+       writew(val, host->ioaddr + reg);
+}
+
+static inline void sdhci_writeb(struct sdhci_host *host, u8 val, int reg)
+{
+       writeb(val, host->ioaddr + reg);
+}
+
+static inline u32 sdhci_readl(struct sdhci_host *host, int reg)
+{
+       return readl(host->ioaddr + reg);
+}
+
+static inline u16 sdhci_readw(struct sdhci_host *host, int reg)
+{
+       return readw(host->ioaddr + reg);
+}
+
+static inline u8 sdhci_readb(struct sdhci_host *host, int reg)
+{
+       return readb(host->ioaddr + reg);
+}
+
+#endif /* CONFIG_MMC_SDHCI_IO_ACCESSORS */
 
 extern struct sdhci_host *sdhci_alloc_host(struct device *dev,
        size_t priv_size);