Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Cross-merge networking fixes after downstream PR.

Conflicts:

drivers/net/ethernet/sfc/tc.c
  fa165e194997 ("sfc: don't unregister flow_indr if it was never registered")
  3bf969e88ada ("sfc: add MAE table machinery for conntrack table")
https://lore.kernel.org/all/20230818112159.7430e9b4@canb.auug.org.au/

No adjacent changes.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 47 insertions, 1 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.c
index 40c8ea43c42f..b8ac66b4a2c4 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.c
@@ -26,6 +26,8 @@
 #include "head.h"
 #include "ior.h"
 
+#include <drm/display/drm_dp.h>
+
 #include <subdev/bios.h>
 #include <subdev/bios/init.h>
 #include <subdev/gpio.h>
@@ -634,6 +636,50 @@ nvkm_dp_enable_supported_link_rates(struct nvkm_outp *outp)
 	return outp->dp.rates != 0;
 }
 
+/* XXX: This is a big fat hack, and this is just drm_dp_read_dpcd_caps()
+ * converted to work inside nvkm. This is a temporary holdover until we start
+ * passing the drm_dp_aux device through NVKM
+ */
+static int
+nvkm_dp_read_dpcd_caps(struct nvkm_outp *outp)
+{
+	struct nvkm_i2c_aux *aux = outp->dp.aux;
+	u8 dpcd_ext[DP_RECEIVER_CAP_SIZE];
+	int ret;
+
+	ret = nvkm_rdaux(aux, DPCD_RC00_DPCD_REV, outp->dp.dpcd, DP_RECEIVER_CAP_SIZE);
+	if (ret < 0)
+		return ret;
+
+	/*
+	 * Prior to DP1.3 the bit represented by
+	 * DP_EXTENDED_RECEIVER_CAP_FIELD_PRESENT was reserved.
+	 * If it is set DP_DPCD_REV at 0000h could be at a value less than
+	 * the true capability of the panel. The only way to check is to
+	 * then compare 0000h and 2200h.
+	 */
+	if (!(outp->dp.dpcd[DP_TRAINING_AUX_RD_INTERVAL] &
+	      DP_EXTENDED_RECEIVER_CAP_FIELD_PRESENT))
+		return 0;
+
+	ret = nvkm_rdaux(aux, DP_DP13_DPCD_REV, dpcd_ext, sizeof(dpcd_ext));
+	if (ret < 0)
+		return ret;
+
+	if (outp->dp.dpcd[DP_DPCD_REV] > dpcd_ext[DP_DPCD_REV]) {
+		OUTP_DBG(outp, "Extended DPCD rev less than base DPCD rev (%d > %d)\n",
+			 outp->dp.dpcd[DP_DPCD_REV], dpcd_ext[DP_DPCD_REV]);
+		return 0;
+	}
+
+	if (!memcmp(outp->dp.dpcd, dpcd_ext, sizeof(dpcd_ext)))
+		return 0;
+
+	memcpy(outp->dp.dpcd, dpcd_ext, sizeof(dpcd_ext));
+
+	return 0;
+}
+
 void
 nvkm_dp_enable(struct nvkm_outp *outp, bool auxpwr)
 {
@@ -689,7 +735,7 @@ nvkm_dp_enable(struct nvkm_outp *outp, bool auxpwr)
 			memset(outp->dp.lttpr, 0x00, sizeof(outp->dp.lttpr));
 		}
 
-		if (!nvkm_rdaux(aux, DPCD_RC00_DPCD_REV, outp->dp.dpcd, sizeof(outp->dp.dpcd))) {
+		if (!nvkm_dp_read_dpcd_caps(outp)) {
 			const u8 rates[] = { 0x1e, 0x14, 0x0a, 0x06, 0 };
 			const u8 *rate;
 			int rate_max;