diff mbox series

[v6,1/3] usb: dwc3: Track DWC_usb31 VERSIONTYPE

Message ID 8f530a9a8b2db692d829a47ade1fc372749bd30e.1541707248.git.thinhn@synopsys.com (mailing list archive)
State Superseded
Headers show
Series usb: dwc3: Workaround isoc start_transfer failure | expand

Commit Message

Thinh Nguyen Nov. 8, 2018, 8:06 p.m. UTC 
Add a new field to dwc3 structure to track VERSIONTYPE. The VERSIONTYPE
is represented in ASCII in the 32-bit VERSIONTYPE register. In
DWC_usb31, sub releases for each version are tracked with VERSIONTYPE
such as "ea01" and "ea02".

Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
---
 drivers/usb/dwc3/core.c |  1 +
 drivers/usb/dwc3/core.h | 10 ++++++++++
 2 files changed, 11 insertions(+)
diff mbox series

Patch

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index becfbb87f791..437816ff8860 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -702,6 +702,7 @@  static bool dwc3_core_is_valid(struct dwc3 *dwc)
 		/* Detected DWC_usb31 IP */
 		dwc->revision = dwc3_readl(dwc->regs, DWC3_VER_NUMBER);
 		dwc->revision |= DWC3_REVISION_IS_DWC31;
+		dwc->version_type = dwc3_readl(dwc->regs, DWC3_VER_TYPE);
 	} else {
 		return false;
 	}
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index 5bfb62533e0f..a2de686c5460 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -918,6 +918,7 @@  struct dwc3_scratchpad_array {
  * @u1u2: only used on revisions <1.83a for workaround
  * @maximum_speed: maximum speed requested (mainly for testing purposes)
  * @revision: revision register contents
+ * @version_type: VERSIONTYPE register contents, a sub release of a revision
  * @dr_mode: requested mode of operation
  * @current_dr_role: current role of operation when in dual-role mode
  * @desired_dr_role: desired role of operation when in dual-role mode
@@ -1104,6 +1105,15 @@  struct dwc3 {
 #define DWC3_USB31_REVISION_110A	(0x3131302a | DWC3_REVISION_IS_DWC31)
 #define DWC3_USB31_REVISION_120A	(0x3132302a | DWC3_REVISION_IS_DWC31)
 
+	u32			version_type;
+
+#define DWC31_VERSIONTYPE_EA01		0x65613031
+#define DWC31_VERSIONTYPE_EA02		0x65613032
+#define DWC31_VERSIONTYPE_EA03		0x65613033
+#define DWC31_VERSIONTYPE_EA04		0x65613034
+#define DWC31_VERSIONTYPE_EA05		0x65613035
+#define DWC31_VERSIONTYPE_EA06		0x65613036
+
 	enum dwc3_ep0_next	ep0_next_event;
 	enum dwc3_ep0_state	ep0state;
 	enum dwc3_link_state	link_state;