Au1[12]00 mmc driver. Only tested on the Au1200 at this point though

it should work on the Au1100 as well. Updated defconfig to include driver.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 96 insertions, 0 deletions

diff --git a/drivers/mmc/au1xmmc.h b/drivers/mmc/au1xmmc.h
new file mode 100644
index 000000000000..341cbdf0baca
--- /dev/null
+++ b/drivers/mmc/au1xmmc.h
@@ -0,0 +1,96 @@
+#ifndef _AU1XMMC_H_
+#define _AU1XMMC_H_
+
+/* Hardware definitions */
+
+#define AU1XMMC_DESCRIPTOR_COUNT 1
+#define AU1XMMC_DESCRIPTOR_SIZE  2048
+
+#define AU1XMMC_OCR ( MMC_VDD_27_28 | MMC_VDD_28_29 | MMC_VDD_29_30  | \
+                      MMC_VDD_30_31 | MMC_VDD_31_32 | MMC_VDD_32_33  | \
+                      MMC_VDD_33_34 | MMC_VDD_34_35 | MMC_VDD_35_36)
+
+/* Easy access macros */
+
+#define HOST_STATUS(h)  ((h)->iobase + SD_STATUS)
+#define HOST_CONFIG(h)  ((h)->iobase + SD_CONFIG)
+#define HOST_ENABLE(h)  ((h)->iobase + SD_ENABLE)
+#define HOST_TXPORT(h)  ((h)->iobase + SD_TXPORT)
+#define HOST_RXPORT(h)  ((h)->iobase + SD_RXPORT)
+#define HOST_CMDARG(h)  ((h)->iobase + SD_CMDARG)
+#define HOST_BLKSIZE(h) ((h)->iobase + SD_BLKSIZE)
+#define HOST_CMD(h)     ((h)->iobase + SD_CMD)
+#define HOST_CONFIG2(h) ((h)->iobase + SD_CONFIG2)
+#define HOST_TIMEOUT(h) ((h)->iobase + SD_TIMEOUT)
+#define HOST_DEBUG(h)   ((h)->iobase + SD_DEBUG)
+
+#define DMA_CHANNEL(h) \
+        ( ((h)->flags & HOST_F_XMIT) ? (h)->tx_chan : (h)->rx_chan)
+
+/* This gives us a hard value for the stop command that we can write directly
+ * to the command register
+ */
+
+#define STOP_CMD (SD_CMD_RT_1B|SD_CMD_CT_7|(0xC << SD_CMD_CI_SHIFT)|SD_CMD_GO)
+
+/* This is the set of interrupts that we configure by default */
+
+#if 0
+#define AU1XMMC_INTERRUPTS (SD_CONFIG_SC | SD_CONFIG_DT | SD_CONFIG_DD | \
+                SD_CONFIG_RAT | SD_CONFIG_CR | SD_CONFIG_I)
+#endif
+
+#define AU1XMMC_INTERRUPTS (SD_CONFIG_SC | SD_CONFIG_DT | \
+                SD_CONFIG_RAT | SD_CONFIG_CR | SD_CONFIG_I)
+/* The poll event (looking for insert/remove events runs twice a second */
+#define AU1XMMC_DETECT_TIMEOUT (HZ/2)
+
+struct au1xmmc_host {
+  struct mmc_host *mmc;
+  struct mmc_request *mrq;
+
+  u32 id;
+
+  u32 flags;
+  u32 iobase;
+  u32 clock;
+  u32 bus_width;
+  u32 power_mode;
+
+  int status;
+
+   struct {
+           int len;
+           int dir;
+  } dma;
+
+   struct {
+           int index;
+           int offset;
+           int len;
+  } pio;
+
+  u32 tx_chan;
+  u32 rx_chan;
+
+  struct timer_list timer;
+  struct tasklet_struct finish_task;
+  struct tasklet_struct data_task;
+
+  spinlock_t lock;
+};
+
+/* Status flags used by the host structure */
+
+#define HOST_F_XMIT   0x0001
+#define HOST_F_RECV   0x0002
+#define HOST_F_DMA    0x0010
+#define HOST_F_ACTIVE 0x0100
+#define HOST_F_STOP   0x1000
+
+#define HOST_S_IDLE   0x0001
+#define HOST_S_CMD    0x0002
+#define HOST_S_DATA   0x0003
+#define HOST_S_STOP   0x0004
+
+#endif