From: Mika Westerberg <mika.westerberg@linux.intel.com>
Date: Fri, 14 Sep 2018 12:58:37 +0300
Subject: thunderbolt: Add support for Intel Tiger Lake
Git-commit: 57d8df68eb53cc15e5bdfc14bfb28a18543109eb
Patch-mainline: v5.8-rc1
References: jsc#SLE-13135

Tiger Lake integrated Thunderbolt/USB4 controller is quite close to
Intel Ice Lake. By default it is still using firmware based connection
manager so we can use most of the Ice Lake flows in Tiger Lake as well.
We check if the firmware connection manager is running and in that case
use it, otherwise use the software based connection manager.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Yehezkel Bernat <yehezkelshb@gmail.com>
Acked-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 drivers/thunderbolt/icm.c | 22 ++++++++++++++++++++++
 drivers/thunderbolt/nhi.c |  4 ++++
 drivers/thunderbolt/nhi.h |  2 ++
 3 files changed, 28 insertions(+)

diff --git a/drivers/thunderbolt/icm.c b/drivers/thunderbolt/icm.c
index fbbe32ca1e69..ffcc8c3459e5 100644
--- a/drivers/thunderbolt/icm.c
+++ b/drivers/thunderbolt/icm.c
@@ -1633,6 +1633,15 @@ static void icm_icl_rtd3_veto(struct tb *tb, const struct icm_pkg_header *hdr)
 		icm_veto_end(tb);
 }
 
+static bool icm_tgl_is_supported(struct tb *tb)
+{
+	/*
+	 * If the firmware is not running use software CM. This platform
+	 * should fully support both.
+	 */
+	return icm_firmware_running(tb->nhi);
+}
+
 static void icm_handle_notification(struct work_struct *work)
 {
 	struct icm_notification *n = container_of(work, typeof(*n), work);
@@ -2269,6 +2278,19 @@ struct tb *icm_probe(struct tb_nhi *nhi)
 		icm->rtd3_veto = icm_icl_rtd3_veto;
 		tb->cm_ops = &icm_icl_ops;
 		break;
+
+	case PCI_DEVICE_ID_INTEL_TGL_NHI0:
+	case PCI_DEVICE_ID_INTEL_TGL_NHI1:
+		icm->is_supported = icm_tgl_is_supported;
+		icm->driver_ready = icm_icl_driver_ready;
+		icm->set_uuid = icm_icl_set_uuid;
+		icm->device_connected = icm_icl_device_connected;
+		icm->device_disconnected = icm_tr_device_disconnected;
+		icm->xdomain_connected = icm_tr_xdomain_connected;
+		icm->xdomain_disconnected = icm_tr_xdomain_disconnected;
+		icm->rtd3_veto = icm_icl_rtd3_veto;
+		tb->cm_ops = &icm_icl_ops;
+		break;
 	}
 
 	if (!icm->is_supported || !icm->is_supported(tb)) {
diff --git a/drivers/thunderbolt/nhi.c b/drivers/thunderbolt/nhi.c
index 1be491ecbb45..2e51d06e8e8d 100644
--- a/drivers/thunderbolt/nhi.c
+++ b/drivers/thunderbolt/nhi.c
@@ -1270,6 +1270,10 @@ static struct pci_device_id nhi_ids[] = {
 	  .driver_data = (kernel_ulong_t)&icl_nhi_ops },
 	{ PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_ICL_NHI1),
 	  .driver_data = (kernel_ulong_t)&icl_nhi_ops },
+	{ PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_TGL_NHI0),
+	  .driver_data = (kernel_ulong_t)&icl_nhi_ops },
+	{ PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_TGL_NHI1),
+	  .driver_data = (kernel_ulong_t)&icl_nhi_ops },
 
 	/* Any USB4 compliant host */
 	{ PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_USB4, ~0) },
diff --git a/drivers/thunderbolt/nhi.h b/drivers/thunderbolt/nhi.h
index 5d276ee9b38e..80162e4b013f 100644
--- a/drivers/thunderbolt/nhi.h
+++ b/drivers/thunderbolt/nhi.h
@@ -73,6 +73,8 @@ extern const struct tb_nhi_ops icl_nhi_ops;
 #define PCI_DEVICE_ID_INTEL_TITAN_RIDGE_DD_BRIDGE	0x15ef
 #define PCI_DEVICE_ID_INTEL_ICL_NHI1			0x8a0d
 #define PCI_DEVICE_ID_INTEL_ICL_NHI0			0x8a17
+#define PCI_DEVICE_ID_INTEL_TGL_NHI0			0x9a1b
+#define PCI_DEVICE_ID_INTEL_TGL_NHI1			0x9a1d
 
 #define PCI_CLASS_SERIAL_USB_USB4			0x0c0340