mmc: basic SDIO device model

Add the sdio bus type and basic device handling.

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

2 files changed, 42 insertions, 0 deletions

diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index 43480ebebf9..9f5f74482d9 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -56,6 +56,9 @@ struct sd_switch_caps {
 };
 
 struct mmc_host;
+struct sdio_func;
+
+#define SDIO_MAX_FUNCS          7
 
 /*
  * MMC device
@@ -73,6 +76,7 @@ struct mmc_card {
 #define MMC_STATE_READONLY      (1<<1)          /* card is read-only */
 #define MMC_STATE_HIGHSPEED     (1<<2)          /* card is in high speed mode */
 #define MMC_STATE_BLOCKADDR     (1<<3)          /* card uses block-addressing */
+
         u32                     raw_cid[4];     /* raw card CID */
         u32                     raw_csd[4];     /* raw card CSD */
         u32                     raw_scr[2];     /* raw card SCR */
@@ -81,6 +85,9 @@ struct mmc_card {
         struct mmc_ext_csd      ext_csd;        /* mmc v4 extended card specific */
         struct sd_scr           scr;            /* extra SD information */
         struct sd_switch_caps   sw_caps;        /* switch (CMD6) caps */
+
+        unsigned int            sdio_funcs;     /* number of SDIO functions */
+        struct sdio_func        *sdio_func[SDIO_MAX_FUNCS]; /* SDIO functions (devices) */
 };
 
 #define mmc_card_mmc(c)         ((c)->type == MMC_TYPE_MMC)
diff --git a/include/linux/mmc/sdio_func.h b/include/linux/mmc/sdio_func.h
new file mode 100644
index 00000000000..50c78db420e
--- /dev/null
+++ b/include/linux/mmc/sdio_func.h
@@ -0,0 +1,35 @@
+/*
+ *  include/linux/mmc/sdio_func.h
+ *
+ *  Copyright 2007 Pierre Ossman
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ */
+
+#ifndef MMC_SDIO_FUNC_H
+#define MMC_SDIO_FUNC_H
+
+struct mmc_card;
+
+/*
+ * SDIO function devices
+ */
+struct sdio_func {
+        struct mmc_card         *card;          /* the card this device belongs to */
+        struct device           dev;            /* the device */
+        unsigned int            num;            /* function number */
+        unsigned int            state;          /* function state */
+#define SDIO_STATE_PRESENT      (1<<0)          /* present in sysfs */
+};
+
+#define sdio_func_present(f)    ((f)->state & SDIO_STATE_PRESENT)
+
+#define sdio_func_set_present(f) ((f)->state |= SDIO_STATE_PRESENT)
+
+#define sdio_func_id(f)         ((f)->dev.bus_id)
+
+#endif
+