[PATCH v3 19/19] usb: dwc3: add support for AMD NL platform

[Huang Rui <ray.huang@amd.com>]

This patch adds support for AMD Nolan (NL) FPGA and SoC platform.

Cc: Jason Chang <jason.chang@amd.com>
Signed-off-by: Huang Rui <ray.huang@amd.com>
---
 drivers/usb/dwc3/core.c          |  9 +++++++++
 drivers/usb/dwc3/core.h          |  2 ++
 drivers/usb/dwc3/dwc3-pci.c      | 19 +++++++++++++++++++
 drivers/usb/dwc3/platform_data.h |  1 +
 4 files changed, 31 insertions(+)

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 33a8f3c..7ab867b 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -526,6 +526,12 @@ static int dwc3_core_init(struct dwc3 *dwc)
 		dwc->is_fpga = true;
 	}
 
+	if (dwc->amd_nl_plat && dwc->is_fpga) {
+		dwc->disable_scramble_quirk = true;
+		dwc->dis_u3_susphy_quirk = true;
+		dwc->dis_u2_susphy_quirk = true;
+	}
+
 	WARN_ONCE(dwc->disable_scramble_quirk && !dwc->is_fpga,
 			"disable_scramble cannot be used on non-FPGA builds\n");
 
@@ -817,6 +823,8 @@ static int dwc3_probe(struct platform_device *pdev)
 				"snps,dis_u3_susphy_quirk");
 		dwc->dis_u2_susphy_quirk = of_property_read_bool(node,
 				"snps,dis_u2_susphy_quirk");
+		dwc->amd_nl_plat = of_property_read_bool(node,
+				"snps,amd_nl_plat");
 
 		dwc->tx_deemph_quirk = of_property_read_bool(node,
 				"snps,tx_deemph_quirk");
@@ -841,6 +849,7 @@ static int dwc3_probe(struct platform_device *pdev)
 		dwc->rx_detect_poll_quirk = pdata->rx_detect_poll_quirk;
 		dwc->dis_u3_susphy_quirk = pdata->dis_u3_susphy_quirk;
 		dwc->dis_u2_susphy_quirk = pdata->dis_u2_susphy_quirk;
+		dwc->amd_nl_plat = pdata->amd_nl_plat;
 
 		dwc->tx_deemph_quirk = pdata->tx_deemph_quirk;
 		if (pdata->tx_deemph)
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index 8b94ad5..b08a2f9 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -699,6 +699,7 @@ struct dwc3_scratchpad_array {
  * @rx_detect_poll_quirk: set if we enable rx_detect to polling lfps quirk
  * @dis_u3_susphy_quirk: set if we disable usb3 suspend phy
  * @dis_u2_susphy_quirk: set if we disable usb2 suspend phy
+ * @amd_nl_plat: set if we use AMD NL platform
  * @tx_deemph_quirk: set if we enable Tx deemphasis quirk
  * @tx_deemph: Tx deemphasis value
  *	0	- -6dB de-emphasis
@@ -822,6 +823,7 @@ struct dwc3 {
 	unsigned		rx_detect_poll_quirk:1;
 	unsigned		dis_u3_susphy_quirk:1;
 	unsigned		dis_u2_susphy_quirk:1;
+	unsigned		amd_nl_plat:1;
 
 	unsigned		tx_deemph_quirk:1;
 	unsigned		tx_deemph:2;
diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c
index ada975f..3af9b47 100644
--- a/drivers/usb/dwc3/dwc3-pci.c
+++ b/drivers/usb/dwc3/dwc3-pci.c
@@ -145,6 +145,24 @@ static int dwc3_pci_probe(struct pci_dev *pci,
 	res[1].name	= "dwc_usb3";
 	res[1].flags	= IORESOURCE_IRQ;
 
+	if (pci->vendor == PCI_VENDOR_ID_AMD &&
+			pci->device == PCI_DEVICE_ID_AMD_NL_USB) {
+		dwc3_pdata.has_lpm_erratum = true;
+		dwc3_pdata.lpm_nyet_thres = 0xf;
+
+		dwc3_pdata.u2exit_lfps_quirk = true;
+		dwc3_pdata.u2ss_inp3_quirk = true;
+		dwc3_pdata.req_p1p2p3_quirk = true;
+		dwc3_pdata.del_p1p2p3_quirk = true;
+		dwc3_pdata.del_phy_power_chg_quirk = true;
+		dwc3_pdata.lfps_filter_quirk = true;
+		dwc3_pdata.rx_detect_poll_quirk = true;
+		dwc3_pdata.amd_nl_plat = true;
+
+		dwc3_pdata.tx_deemph_quirk = true;
+		dwc3_pdata.tx_deemph = 1;
+	}
+
 	ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res));
 	if (ret) {
 		dev_err(dev, "couldn't add resources to dwc3 device\n");
@@ -194,6 +212,7 @@ static const struct pci_device_id dwc3_pci_id_table[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW), },
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT), },
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), },
+	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB), },
 	{  }	/* Terminating Entry */
 };
 MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);
diff --git a/drivers/usb/dwc3/platform_data.h b/drivers/usb/dwc3/platform_data.h
index 1cfd384..c2c3511 100644
--- a/drivers/usb/dwc3/platform_data.h
+++ b/drivers/usb/dwc3/platform_data.h
@@ -37,6 +37,7 @@ struct dwc3_platform_data {
 	unsigned rx_detect_poll_quirk:1;
 	unsigned dis_u3_susphy_quirk:1;
 	unsigned dis_u2_susphy_quirk:1;
+	unsigned amd_nl_plat:1;
 
 	unsigned tx_deemph_quirk:1;
 	unsigned tx_deemph:2;
-- 
1.9.1