mmc: Fixes for Dual Data Rate (DDR) support

The DDR support patch needs the following fixes:

- The block driver does not need to know about DDR, any more
  than it needs to know about bus width.
- Not only the card must be switched to DDR mode.  The host
  controller must also be configured, which is done through
  the 'set_ios()' function.
- Do not set the DDR mode state until after the switch command
  is successful.
- Setting block length is not supported in DDR mode.  Make that
  a core function and change the other place it is used (mmc_test)
  also.

Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c
index e70bd6641ce..da3c01b214e 100644
--- a/drivers/mmc/core/bus.c
+++ b/drivers/mmc/core/bus.c
@@ -253,14 +253,16 @@ int mmc_add_card(struct mmc_card *card)
         }
 
         if (mmc_host_is_spi(card->host)) {
-                printk(KERN_INFO "%s: new %s%s card on SPI\n",
+                printk(KERN_INFO "%s: new %s%s%s card on SPI\n",
                         mmc_hostname(card->host),
                         mmc_card_highspeed(card) ? "high speed " : "",
+                        mmc_card_ddr_mode(card) ? "DDR " : "",
                         type);
         } else {
-                printk(KERN_INFO "%s: new %s%s card at address %04x\n",
+                printk(KERN_INFO "%s: new %s%s%s card at address %04x\n",
                         mmc_hostname(card->host),
                         mmc_card_highspeed(card) ? "high speed " : "",
+                        mmc_card_ddr_mode(card) ? "DDR " : "",
                         type, card->rca);
         }