tmio_mmc: add bus_shift support
Some ASIC3 devices in the wild are connected with the address bus shifted
by one line, so that its 16-bit registers appear 32-bit aligned in host
memory space.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Acked-by: Ian Molton <ian@mnementh.co.uk>
Signed-off-by: Pierre Ossman <pierre@ossman.eu>
diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h
index 9c831ab..9fa9985 100644
--- a/drivers/mmc/host/tmio_mmc.h
+++ b/drivers/mmc/host/tmio_mmc.h
@@ -83,34 +83,36 @@
TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT)
#define TMIO_MASK_IRQ (TMIO_MASK_READOP | TMIO_MASK_WRITEOP | TMIO_MASK_CMD)
-#define enable_mmc_irqs(ctl, i) \
+
+#define enable_mmc_irqs(host, i) \
do { \
u32 mask;\
- mask = tmio_ioread32((ctl) + CTL_IRQ_MASK); \
+ mask = sd_ctrl_read32((host), CTL_IRQ_MASK); \
mask &= ~((i) & TMIO_MASK_IRQ); \
- tmio_iowrite32(mask, (ctl) + CTL_IRQ_MASK); \
+ sd_ctrl_write32((host), CTL_IRQ_MASK, mask); \
} while (0)
-#define disable_mmc_irqs(ctl, i) \
+#define disable_mmc_irqs(host, i) \
do { \
u32 mask;\
- mask = tmio_ioread32((ctl) + CTL_IRQ_MASK); \
+ mask = sd_ctrl_read32((host), CTL_IRQ_MASK); \
mask |= ((i) & TMIO_MASK_IRQ); \
- tmio_iowrite32(mask, (ctl) + CTL_IRQ_MASK); \
+ sd_ctrl_write32((host), CTL_IRQ_MASK, mask); \
} while (0)
-#define ack_mmc_irqs(ctl, i) \
+#define ack_mmc_irqs(host, i) \
do { \
u32 mask;\
- mask = tmio_ioread32((ctl) + CTL_STATUS); \
+ mask = sd_ctrl_read32((host), CTL_STATUS); \
mask &= ~((i) & TMIO_MASK_IRQ); \
- tmio_iowrite32(mask, (ctl) + CTL_STATUS); \
+ sd_ctrl_write32((host), CTL_STATUS, mask); \
} while (0)
struct tmio_mmc_host {
void __iomem *cnf;
void __iomem *ctl;
+ unsigned long bus_shift;
struct mmc_command *cmd;
struct mmc_request *mrq;
struct mmc_data *data;
@@ -123,6 +125,63 @@
unsigned int sg_off;
};
+#include <linux/io.h>
+
+static inline u16 sd_ctrl_read16(struct tmio_mmc_host *host, int addr)
+{
+ return readw(host->ctl + (addr << host->bus_shift));
+}
+
+static inline void sd_ctrl_read16_rep(struct tmio_mmc_host *host, int addr,
+ u16 *buf, int count)
+{
+ readsw(host->ctl + (addr << host->bus_shift), buf, count);
+}
+
+static inline u32 sd_ctrl_read32(struct tmio_mmc_host *host, int addr)
+{
+ return readw(host->ctl + (addr << host->bus_shift)) |
+ readw(host->ctl + ((addr + 2) << host->bus_shift)) << 16;
+}
+
+static inline void sd_ctrl_write16(struct tmio_mmc_host *host, int addr,
+ u16 val)
+{
+ writew(val, host->ctl + (addr << host->bus_shift));
+}
+
+static inline void sd_ctrl_write16_rep(struct tmio_mmc_host *host, int addr,
+ u16 *buf, int count)
+{
+ writesw(host->ctl + (addr << host->bus_shift), buf, count);
+}
+
+static inline void sd_ctrl_write32(struct tmio_mmc_host *host, int addr,
+ u32 val)
+{
+ writew(val, host->ctl + (addr << host->bus_shift));
+ writew(val >> 16, host->ctl + ((addr + 2) << host->bus_shift));
+}
+
+static inline void sd_config_write8(struct tmio_mmc_host *host, int addr,
+ u8 val)
+{
+ writeb(val, host->cnf + (addr << host->bus_shift));
+}
+
+static inline void sd_config_write16(struct tmio_mmc_host *host, int addr,
+ u16 val)
+{
+ writew(val, host->cnf + (addr << host->bus_shift));
+}
+
+static inline void sd_config_write32(struct tmio_mmc_host *host, int addr,
+ u32 val)
+{
+ writew(val, host->cnf + (addr << host->bus_shift));
+ writew(val >> 16, host->cnf + ((addr + 2) << host->bus_shift));
+}
+
#include <linux/scatterlist.h>
#include <linux/blkdev.h>