sdio: support IO_RW_EXTENDED

Support the multi-byte transfer operation, including handlers for
common operations like writel()/readl().

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

1 files changed, 12 insertions, 0 deletions

diff --git a/include/linux/mmc/sdio.h b/include/linux/mmc/sdio.h
index 56239f4aab04..9b1ec76cac37 100644
--- a/include/linux/mmc/sdio.h
+++ b/include/linux/mmc/sdio.h
@@ -15,6 +15,7 @@
 /* SDIO commands                         type  argument     response */
 #define SD_IO_SEND_OP_COND          5 /* bcr  [23:0] OCR         R4  */
 #define SD_IO_RW_DIRECT            52 /* ac   [31:0] See below   R5  */
+#define SD_IO_RW_EXTENDED          53 /* adtc [31:0] See below   R5  */
 
 /*
  * SD_IO_RW_DIRECT argument format:
@@ -27,6 +28,17 @@
  */
 
 /*
+ * SD_IO_RW_EXTENDED argument format:
+ *
+ *      [31] R/W flag
+ *      [30:28] Function number
+ *      [27] Block mode
+ *      [26] Increment address
+ *      [25:9] Register address
+ *      [8:0] Byte/block count
+ */
+
+/*
   SDIO status in R5
   Type
         e : error bit