Merge tag 'usb-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB / Thunderbolt updates from Greg KH:
 "Here is the big set of USB and Thunderbolt changes for 6.9-rc1. Lots
  of tiny changes and forward progress to support new hardware and
  better support for existing devices. Included in here are:

   - Thunderbolt (i.e. USB4) updates for newer hardware and uses as more
     people start to use the hardware

   - default USB authentication mode Kconfig and documentation update to
     make it more obvious what is going on

   - USB typec updates and enhancements

   - usual dwc3 driver updates

   - usual xhci driver updates

   - function USB (i.e. gadget) driver updates and additions

   - new device ids for lots of drivers

   - loads of other small updates, full details in the shortlog

  All of these, including a "last minute regression fix" have been in
  linux-next with no reported issues"

* tag 'usb-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (185 commits)
  usb: usb-acpi: Fix oops due to freeing uninitialized pld pointer
  usb: gadget: net2272: Use irqflags in the call to net2272_probe_fin
  usb: gadget: tegra-xudc: Fix USB3 PHY retrieval logic
  phy: tegra: xusb: Add API to retrieve the port number of phy
  USB: gadget: pxa27x_udc: Remove unused of_gpio.h
  usb: gadget/snps_udc_plat: Remove unused of_gpio.h
  usb: ohci-pxa27x: Remove unused of_gpio.h
  usb: sl811-hcd: only defined function checkdone if QUIRK2 is defined
  usb: Clarify expected behavior of dev_bin_attrs_are_visible()
  xhci: Allow RPM on the USB controller (1022:43f7) by default
  usb: isp1760: remove SLAB_MEM_SPREAD flag usage
  usb: misc: onboard_hub: use pointer consistently in the probe function
  usb: gadget: fsl: Increase size of name buffer for endpoints
  usb: gadget: fsl: Add of device table to enable module autoloading
  usb: typec: tcpm: add support to set tcpc connector orientatition
  usb: typec: tcpci: add generic tcpci fallback compatible
  dt-bindings: usb: typec-tcpci: add tcpci fallback binding
  usb: gadget: fsl-udc: Replace custom log wrappers by dev_{err,warn,dbg,vdbg}
  usb: core: Set connect_type of ports based on DT node
  dt-bindings: usb: Add downstream facing ports to realtek binding
  ...

1 files changed, 40 insertions, 56 deletions

diff --git a/drivers/thunderbolt/tunnel.c b/drivers/thunderbolt/tunnel.c
index 6fffb2c82d3d13..cb6609a56a03f9 100644
--- a/drivers/thunderbolt/tunnel.c
+++ b/drivers/thunderbolt/tunnel.c
@@ -706,7 +706,7 @@ static int tb_dp_xchg_caps(struct tb_tunnel *tunnel)
 		      "DP OUT maximum supported bandwidth %u Mb/s x%u = %u Mb/s\n",
 		      out_rate, out_lanes, bw);
 
-	if (tb_port_path_direction_downstream(in, out))
+	if (tb_tunnel_direction_downstream(tunnel))
 		max_bw = tunnel->max_down;
 	else
 		max_bw = tunnel->max_up;
@@ -831,7 +831,7 @@ static int tb_dp_bandwidth_alloc_mode_enable(struct tb_tunnel *tunnel)
 	 * max_up/down fields. For discovery we just read what the
 	 * estimation was set to.
 	 */
-	if (tb_port_path_direction_downstream(in, out))
+	if (tb_tunnel_direction_downstream(tunnel))
 		estimated_bw = tunnel->max_down;
 	else
 		estimated_bw = tunnel->max_up;
@@ -926,12 +926,18 @@ static int tb_dp_activate(struct tb_tunnel *tunnel, bool active)
 	return 0;
 }
 
-/* max_bw is rounded up to next granularity */
+/**
+ * tb_dp_bandwidth_mode_maximum_bandwidth() - Maximum possible bandwidth
+ * @tunnel: DP tunnel to check
+ * @max_bw_rounded: Maximum bandwidth in Mb/s rounded up to the next granularity
+ *
+ * Returns maximum possible bandwidth for this tunnel in Mb/s.
+ */
 static int tb_dp_bandwidth_mode_maximum_bandwidth(struct tb_tunnel *tunnel,
-						  int *max_bw)
+						  int *max_bw_rounded)
 {
 	struct tb_port *in = tunnel->src_port;
-	int ret, rate, lanes, nrd_bw;
+	int ret, rate, lanes, max_bw;
 	u32 cap;
 
 	/*
@@ -947,41 +953,26 @@ static int tb_dp_bandwidth_mode_maximum_bandwidth(struct tb_tunnel *tunnel,
 		return ret;
 
 	rate = tb_dp_cap_get_rate_ext(cap);
-	if (tb_dp_is_uhbr_rate(rate)) {
-		/*
-		 * When UHBR is used there is no reduction in lanes so
-		 * we can use this directly.
-		 */
-		lanes = tb_dp_cap_get_lanes(cap);
-	} else {
-		/*
-		 * If there is no UHBR supported then check the
-		 * non-reduced rate and lanes.
-		 */
-		ret = usb4_dp_port_nrd(in, &rate, &lanes);
-		if (ret)
-			return ret;
-	}
+	lanes = tb_dp_cap_get_lanes(cap);
 
-	nrd_bw = tb_dp_bandwidth(rate, lanes);
+	max_bw = tb_dp_bandwidth(rate, lanes);
 
-	if (max_bw) {
+	if (max_bw_rounded) {
 		ret = usb4_dp_port_granularity(in);
 		if (ret < 0)
 			return ret;
-		*max_bw = roundup(nrd_bw, ret);
+		*max_bw_rounded = roundup(max_bw, ret);
 	}
 
-	return nrd_bw;
+	return max_bw;
 }
 
 static int tb_dp_bandwidth_mode_consumed_bandwidth(struct tb_tunnel *tunnel,
 						   int *consumed_up,
 						   int *consumed_down)
 {
-	struct tb_port *out = tunnel->dst_port;
 	struct tb_port *in = tunnel->src_port;
-	int ret, allocated_bw, max_bw;
+	int ret, allocated_bw, max_bw_rounded;
 
 	if (!usb4_dp_port_bandwidth_mode_enabled(in))
 		return -EOPNOTSUPP;
@@ -995,13 +986,13 @@ static int tb_dp_bandwidth_mode_consumed_bandwidth(struct tb_tunnel *tunnel,
 		return ret;
 	allocated_bw = ret;
 
-	ret = tb_dp_bandwidth_mode_maximum_bandwidth(tunnel, &max_bw);
+	ret = tb_dp_bandwidth_mode_maximum_bandwidth(tunnel, &max_bw_rounded);
 	if (ret < 0)
 		return ret;
-	if (allocated_bw == max_bw)
+	if (allocated_bw == max_bw_rounded)
 		allocated_bw = ret;
 
-	if (tb_port_path_direction_downstream(in, out)) {
+	if (tb_tunnel_direction_downstream(tunnel)) {
 		*consumed_up = 0;
 		*consumed_down = allocated_bw;
 	} else {
@@ -1015,7 +1006,6 @@ static int tb_dp_bandwidth_mode_consumed_bandwidth(struct tb_tunnel *tunnel,
 static int tb_dp_allocated_bandwidth(struct tb_tunnel *tunnel, int *allocated_up,
 				     int *allocated_down)
 {
-	struct tb_port *out = tunnel->dst_port;
 	struct tb_port *in = tunnel->src_port;
 
 	/*
@@ -1023,20 +1013,21 @@ static int tb_dp_allocated_bandwidth(struct tb_tunnel *tunnel, int *allocated_up
 	 * Otherwise we read it from the DPRX.
 	 */
 	if (usb4_dp_port_bandwidth_mode_enabled(in) && tunnel->bw_mode) {
-		int ret, allocated_bw, max_bw;
+		int ret, allocated_bw, max_bw_rounded;
 
 		ret = usb4_dp_port_allocated_bandwidth(in);
 		if (ret < 0)
 			return ret;
 		allocated_bw = ret;
 
-		ret = tb_dp_bandwidth_mode_maximum_bandwidth(tunnel, &max_bw);
+		ret = tb_dp_bandwidth_mode_maximum_bandwidth(tunnel,
+							     &max_bw_rounded);
 		if (ret < 0)
 			return ret;
-		if (allocated_bw == max_bw)
+		if (allocated_bw == max_bw_rounded)
 			allocated_bw = ret;
 
-		if (tb_port_path_direction_downstream(in, out)) {
+		if (tb_tunnel_direction_downstream(tunnel)) {
 			*allocated_up = 0;
 			*allocated_down = allocated_bw;
 		} else {
@@ -1053,26 +1044,25 @@ static int tb_dp_allocated_bandwidth(struct tb_tunnel *tunnel, int *allocated_up
 static int tb_dp_alloc_bandwidth(struct tb_tunnel *tunnel, int *alloc_up,
 				 int *alloc_down)
 {
-	struct tb_port *out = tunnel->dst_port;
 	struct tb_port *in = tunnel->src_port;
-	int max_bw, ret, tmp;
+	int max_bw_rounded, ret, tmp;
 
 	if (!usb4_dp_port_bandwidth_mode_enabled(in))
 		return -EOPNOTSUPP;
 
-	ret = tb_dp_bandwidth_mode_maximum_bandwidth(tunnel, &max_bw);
+	ret = tb_dp_bandwidth_mode_maximum_bandwidth(tunnel, &max_bw_rounded);
 	if (ret < 0)
 		return ret;
 
-	if (tb_port_path_direction_downstream(in, out)) {
-		tmp = min(*alloc_down, max_bw);
+	if (tb_tunnel_direction_downstream(tunnel)) {
+		tmp = min(*alloc_down, max_bw_rounded);
 		ret = usb4_dp_port_allocate_bandwidth(in, tmp);
 		if (ret)
 			return ret;
 		*alloc_down = tmp;
 		*alloc_up = 0;
 	} else {
-		tmp = min(*alloc_up, max_bw);
+		tmp = min(*alloc_up, max_bw_rounded);
 		ret = usb4_dp_port_allocate_bandwidth(in, tmp);
 		if (ret)
 			return ret;
@@ -1150,17 +1140,16 @@ static int tb_dp_read_cap(struct tb_tunnel *tunnel, unsigned int cap, u32 *rate,
 static int tb_dp_maximum_bandwidth(struct tb_tunnel *tunnel, int *max_up,
 				   int *max_down)
 {
-	struct tb_port *in = tunnel->src_port;
 	int ret;
 
-	if (!usb4_dp_port_bandwidth_mode_enabled(in))
+	if (!usb4_dp_port_bandwidth_mode_enabled(tunnel->src_port))
 		return -EOPNOTSUPP;
 
 	ret = tb_dp_bandwidth_mode_maximum_bandwidth(tunnel, NULL);
 	if (ret < 0)
 		return ret;
 
-	if (tb_port_path_direction_downstream(in, tunnel->dst_port)) {
+	if (tb_tunnel_direction_downstream(tunnel)) {
 		*max_up = 0;
 		*max_down = ret;
 	} else {
@@ -1174,8 +1163,7 @@ static int tb_dp_maximum_bandwidth(struct tb_tunnel *tunnel, int *max_up,
 static int tb_dp_consumed_bandwidth(struct tb_tunnel *tunnel, int *consumed_up,
 				    int *consumed_down)
 {
-	struct tb_port *in = tunnel->src_port;
-	const struct tb_switch *sw = in->sw;
+	const struct tb_switch *sw = tunnel->src_port->sw;
 	u32 rate = 0, lanes = 0;
 	int ret;
 
@@ -1196,17 +1184,13 @@ static int tb_dp_consumed_bandwidth(struct tb_tunnel *tunnel, int *consumed_up,
 		/*
 		 * Then see if the DPRX negotiation is ready and if yes
 		 * return that bandwidth (it may be smaller than the
-		 * reduced one). Otherwise return the remote (possibly
-		 * reduced) caps.
+		 * reduced one). According to VESA spec, the DPRX
+		 * negotiation shall compete in 5 seconds after tunnel
+		 * established. We give it 100ms extra just in case.
 		 */
-		ret = tb_dp_wait_dprx(tunnel, 150);
-		if (ret) {
-			if (ret == -ETIMEDOUT)
-				ret = tb_dp_read_cap(tunnel, DP_REMOTE_CAP,
-						     &rate, &lanes);
-			if (ret)
-				return ret;
-		}
+		ret = tb_dp_wait_dprx(tunnel, 5100);
+		if (ret)
+			return ret;
 		ret = tb_dp_read_cap(tunnel, DP_COMMON_CAP, &rate, &lanes);
 		if (ret)
 			return ret;
@@ -1221,7 +1205,7 @@ static int tb_dp_consumed_bandwidth(struct tb_tunnel *tunnel, int *consumed_up,
 		return 0;
 	}
 
-	if (tb_port_path_direction_downstream(in, tunnel->dst_port)) {
+	if (tb_tunnel_direction_downstream(tunnel)) {
 		*consumed_up = 0;
 		*consumed_down = tb_dp_bandwidth(rate, lanes);
 	} else {