usb: chipidea: add chipidea revision information
Define ci_get_revision API to know the controller revision
information according to chipidea 1.1a, 2.0a and 2.5a spec.
Besides, add one entry at struct ci_hdrc to indicate revision
information, it can be used for adding different code for
revisions, eg kinds of errata.
Reviewed-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/chipidea/bits.h b/drivers/usb/chipidea/bits.h
index ca57e3d..e69424d 100644
--- a/drivers/usb/chipidea/bits.h
+++ b/drivers/usb/chipidea/bits.h
@@ -15,6 +15,16 @@
#include <linux/usb/ehci_def.h>
+/*
+ * ID
+ * For 1.x revision, bit24 - bit31 are reserved
+ * For 2.x revision, bit25 - bit28 are 0x2
+ */
+#define TAG (0x1F << 16)
+#define REVISION (0xF << 21)
+#define VERSION (0xF << 25)
+#define CIVERSION (0x7 << 29)
+
/* HCCPARAMS */
#define HCCPARAMS_LEN BIT(17)