sata highbank: add bit-banged SGPIO driver support

Highbank supports SGPIO by bit-banging out the SGPIO signals over
three GPIO pins defined in the DTB. Add support for this SGPIO
functionality.

Signed-off-by: Mark Langsdorf <mark.langsdorf@calxeda.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h
index 05adf29a2814..adfb2df20b7a 100644
--- a/drivers/ata/ahci.h
+++ b/drivers/ata/ahci.h
@@ -322,6 +322,7 @@ struct ahci_host_priv {
         u32                     em_buf_sz;      /* EM buffer size in byte */
         u32                     em_msg_type;    /* EM message type */
         struct clk              *clk;           /* Only for platforms supporting clk */
+        void                    *plat_data;     /* Other platform data */
 };
 
 extern int ahci_ignore_sss;