[PATCH v2 15/16] usb: dwc3: add tx demphasis quirk

Huang Rui
2014-10-17T09:16:01Z

AMD NL needs to enable Tx Deemphasis quirk.

Signed-off-by: Huang Rui <ray.huang@amd.com>
---
drivers/usb/dwc3/core.c | 3 +++
drivers/usb/dwc3/core.h | 2 ++
drivers/usb/dwc3/dwc3-pci.c | 3 ++-
drivers/usb/dwc3/platform_data.h | 1 +
4 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index f3c9699..3ccfe41 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -392,6 +392,9 @@ static void dwc3_phy_setup(struct dwc3 *dwc)
if (dwc->quirks & DWC3_QUIRK_RX_DETOPOLL)
reg |= DWC3_GUSB3PIPECTL_RX_DETOPOLL;

+ if (dwc->quirks & DWC3_QUIRK_TX_DEEPH)
+ reg |= DWC3_GUSB3PIPECTL_TX_DEEPH(1);
+
dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg);

mdelay(100);
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index 1952759..1b137f4 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -184,6 +184,8 @@
#define DWC3_GUSB3PIPECTL_SUSPHY (1 << 17)
#define DWC3_GUSB3PIPECTL_LFPSFILT (1 << 9)
#define DWC3_GUSB3PIPECTL_RX_DETOPOLL (1 << 8)
+#define DWC3_GUSB3PIPECTL_TX_DEEPH_MASK DWC3_GUSB3PIPECTL_TX_DEEPH(3)
+#define DWC3_GUSB3PIPECTL_TX_DEEPH(n) ((n) << 1)

/* Global TX Fifo Size Register */
#define DWC3_GTXFIFOSIZ_TXFDEF(n) ((n) & 0xffff)
diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c
index 6f789fd..146eb2f 100644
--- a/drivers/usb/dwc3/dwc3-pci.c
+++ b/drivers/usb/dwc3/dwc3-pci.c
@@ -156,7 +156,8 @@ static int dwc3_pci_probe(struct pci_dev *pci,
| DWC3_QUIRK_DEPP1P2P3
| DWC3_QUIRK_DEPOCHANGE
| DWC3_QUIRK_LFPSFILT
- | DWC3_QUIRK_RX_DETOPOLL;
+ | DWC3_QUIRK_RX_DETOPOLL
+ | DWC3_QUIRK_TX_DEEPH;
}

ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res));
diff --git a/drivers/usb/dwc3/platform_data.h b/drivers/usb/dwc3/platform_data.h
index 5df3419..54f0e45 100644
--- a/drivers/usb/dwc3/platform_data.h
+++ b/drivers/usb/dwc3/platform_data.h
@@ -37,5 +37,6 @@ struct dwc3_platform_data {
#define DWC3_QUIRK_DEPOCHANGE (1 << 6)
#define DWC3_QUIRK_LFPSFILT (1 << 7)
#define DWC3_QUIRK_RX_DETOPOLL (1 << 8)
+#define DWC3_QUIRK_TX_DEEPH (1 << 9)

};
--
1.9.1