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Date: Tue, 28 Oct 2014 19:54:30 +0800
From: Huang Rui <ray.huang@....com>
To: Felipe Balbi <balbi@...com>,
Alan Stern <stern@...land.harvard.edu>,
"Bjorn Helgaas" <bhelgaas@...gle.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC: Paul Zimmerman <Paul.Zimmerman@...opsys.com>,
Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
Jason Chang <jason.chang@....com>,
"Vincent Wan" <vincent.wan@....com>, Tony Li <tony.li@....com>,
<linux-usb@...r.kernel.org>, <linux-pci@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, Huang Rui <ray.huang@....com>
Subject: [PATCH v3 09/19] usb: dwc3: add delay p1p2p3 quirk
This patch adds delay P0 to P1/P2/P3 quirk for U2/U2/U3, and some special
platforms can configure that if it is needed.
Signed-off-by: Huang Rui <ray.huang@....com>
---
drivers/usb/dwc3/core.c | 6 ++++++
drivers/usb/dwc3/core.h | 5 +++++
drivers/usb/dwc3/platform_data.h | 1 +
3 files changed, 12 insertions(+)
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 021ebf3..244c71a 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -380,6 +380,9 @@ static void dwc3_phy_setup(struct dwc3 *dwc)
if (dwc->req_p1p2p3_quirk)
reg |= DWC3_GUSB3PIPECTL_REQP1P2P3;
+ if (dwc->del_p1p2p3_quirk)
+ reg |= DWC3_GUSB3PIPECTL_DEP1P2P3_EN;
+
dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg);
mdelay(100);
@@ -756,6 +759,8 @@ static int dwc3_probe(struct platform_device *pdev)
"snps,u2ss_inp3_quirk");
dwc->req_p1p2p3_quirk = of_property_read_bool(node,
"snps,req_p1p2p3_quirk");
+ dwc->del_p1p2p3_quirk = of_property_read_bool(node,
+ "snps,del_p1p2p3_quirk");
} else if (pdata) {
dwc->maximum_speed = pdata->maximum_speed;
dwc->has_lpm_erratum = pdata->has_lpm_erratum;
@@ -769,6 +774,7 @@ static int dwc3_probe(struct platform_device *pdev)
dwc->u2exit_lfps_quirk = pdata->u2exit_lfps_quirk;
dwc->u2ss_inp3_quirk = pdata->u2ss_inp3_quirk;
dwc->req_p1p2p3_quirk = pdata->req_p1p2p3_quirk;
+ dwc->del_p1p2p3_quirk = pdata->del_p1p2p3_quirk;
}
/* default to superspeed if no maximum_speed passed */
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index e1aca71..a91f42d 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -178,6 +178,9 @@
#define DWC3_GUSB3PIPECTL_PHYSOFTRST (1 << 31)
#define DWC3_GUSB3PIPECTL_U2SSINP3OK (1 << 29)
#define DWC3_GUSB3PIPECTL_REQP1P2P3 (1 << 24)
+#define DWC3_GUSB3PIPECTL_DEP1P2P3(n) ((n) << 19)
+#define DWC3_GUSB3PIPECTL_DEP1P2P3_MASK DWC3_GUSB3PIPECTL_DEP1P2P3(7)
+#define DWC3_GUSB3PIPECTL_DEP1P2P3_EN DWC3_GUSB3PIPECTL_DEP1P2P3(1)
#define DWC3_GUSB3PIPECTL_SUSPHY (1 << 17)
/* Global TX Fifo Size Register */
@@ -685,6 +688,7 @@ struct dwc3_scratchpad_array {
* @u2exit_lfps_quirk: set if we enable u2exit lfps quirk
* @u2ss_inp3_quirk: set if we enable P3 OK for U2/SS Inactive quirk
* @req_p1p2p3_quirk: set if we enable request p1p2p3 quirk
+ * @del_p1p2p3_quirk: set if we enable delay p1p2p3 quirk
*/
struct dwc3 {
struct usb_ctrlrequest *ctrl_req;
@@ -796,6 +800,7 @@ struct dwc3 {
unsigned u2exit_lfps_quirk:1;
unsigned u2ss_inp3_quirk:1;
unsigned req_p1p2p3_quirk:1;
+ unsigned del_p1p2p3_quirk:1;
};
/* -------------------------------------------------------------------------- */
diff --git a/drivers/usb/dwc3/platform_data.h b/drivers/usb/dwc3/platform_data.h
index 457ee9c..6dca665 100644
--- a/drivers/usb/dwc3/platform_data.h
+++ b/drivers/usb/dwc3/platform_data.h
@@ -31,4 +31,5 @@ struct dwc3_platform_data {
unsigned u2exit_lfps_quirk:1;
unsigned u2ss_inp3_quirk:1;
unsigned req_p1p2p3_quirk:1;
+ unsigned del_p1p2p3_quirk:1;
};
--
1.9.1
--
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