Update Linux to v5.4.148

Sourced from [1]

[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.4.148.tar.gz

Change-Id: Ib3d26c5ba9b022e2e03533005c4fed4d7c30b61b
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index fbf57bc..c410221 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -919,6 +919,11 @@
 	.atomic_disable = tegra_cursor_atomic_disable,
 };
 
+static const uint64_t linear_modifiers[] = {
+	DRM_FORMAT_MOD_LINEAR,
+	DRM_FORMAT_MOD_INVALID
+};
+
 static struct drm_plane *tegra_dc_cursor_plane_create(struct drm_device *drm,
 						      struct tegra_dc *dc)
 {
@@ -947,7 +952,7 @@
 
 	err = drm_universal_plane_init(drm, &plane->base, possible_crtcs,
 				       &tegra_plane_funcs, formats,
-				       num_formats, NULL,
+				       num_formats, linear_modifiers,
 				       DRM_PLANE_TYPE_CURSOR, NULL);
 	if (err < 0) {
 		kfree(plane);
@@ -1065,7 +1070,8 @@
 
 	err = drm_universal_plane_init(drm, &plane->base, possible_crtcs,
 				       &tegra_plane_funcs, formats,
-				       num_formats, NULL, type, NULL);
+				       num_formats, linear_modifiers,
+				       type, NULL);
 	if (err < 0) {
 		kfree(plane);
 		return ERR_PTR(err);
@@ -1667,6 +1673,11 @@
 			dev_err(dc->dev,
 				"failed to set clock rate to %lu Hz\n",
 				state->pclk);
+
+		err = clk_set_rate(dc->clk, state->pclk);
+		if (err < 0)
+			dev_err(dc->dev, "failed to set clock %pC to %lu Hz: %d\n",
+				dc->clk, state->pclk, err);
 	}
 
 	DRM_DEBUG_KMS("rate: %lu, div: %u\n", clk_get_rate(dc->clk),
@@ -1677,11 +1688,6 @@
 		value = SHIFT_CLK_DIVIDER(state->div) | PIXEL_CLK_DIVIDER_PCD1;
 		tegra_dc_writel(dc, value, DC_DISP_DISP_CLOCK_CONTROL);
 	}
-
-	err = clk_set_rate(dc->clk, state->pclk);
-	if (err < 0)
-		dev_err(dc->dev, "failed to set clock %pC to %lu Hz: %d\n",
-			dc->clk, state->pclk, err);
 }
 
 static void tegra_dc_stop(struct tegra_dc *dc)
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index 6fb7d74..c2ab7cf 100644
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -122,8 +122,6 @@
 	drm->mode_config.max_width = 4096;
 	drm->mode_config.max_height = 4096;
 
-	drm->mode_config.allow_fb_modifiers = true;
-
 	drm->mode_config.normalize_zpos = true;
 
 	drm->mode_config.funcs = &tegra_drm_mode_config_funcs;
@@ -201,19 +199,19 @@
 	if (tegra->hub)
 		tegra_display_hub_cleanup(tegra->hub);
 device:
-	host1x_device_exit(device);
-fbdev:
-	drm_kms_helper_poll_fini(drm);
-	tegra_drm_fb_free(drm);
-config:
-	drm_mode_config_cleanup(drm);
-
 	if (tegra->domain) {
 		mutex_destroy(&tegra->mm_lock);
 		drm_mm_takedown(&tegra->mm);
 		put_iova_domain(&tegra->carveout.domain);
 		iova_cache_put();
 	}
+
+	host1x_device_exit(device);
+fbdev:
+	drm_kms_helper_poll_fini(drm);
+	tegra_drm_fb_free(drm);
+config:
+	drm_mode_config_cleanup(drm);
 domain:
 	if (tegra->domain)
 		iommu_domain_free(tegra->domain);
@@ -256,7 +254,7 @@
 	if (!fpriv)
 		return -ENOMEM;
 
-	idr_init(&fpriv->contexts);
+	idr_init_base(&fpriv->contexts, 1);
 	mutex_init(&fpriv->lock);
 	filp->driver_priv = fpriv;
 
diff --git a/drivers/gpu/drm/tegra/hub.c b/drivers/gpu/drm/tegra/hub.c
index 839b49c..767fb44 100644
--- a/drivers/gpu/drm/tegra/hub.c
+++ b/drivers/gpu/drm/tegra/hub.c
@@ -141,7 +141,9 @@
 	for (i = 0; i < hub->soc->num_wgrps; i++) {
 		struct tegra_windowgroup *wgrp = &hub->wgrps[i];
 
-		tegra_windowgroup_enable(wgrp);
+		/* Skip orphaned window group whose parent DC is disabled */
+		if (wgrp->parent)
+			tegra_windowgroup_enable(wgrp);
 	}
 
 	return 0;
@@ -158,7 +160,9 @@
 	for (i = 0; i < hub->soc->num_wgrps; i++) {
 		struct tegra_windowgroup *wgrp = &hub->wgrps[i];
 
-		tegra_windowgroup_disable(wgrp);
+		/* Skip orphaned window group whose parent DC is disabled */
+		if (wgrp->parent)
+			tegra_windowgroup_disable(wgrp);
 	}
 }
 
diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c
index e1669ad..0419b61 100644
--- a/drivers/gpu/drm/tegra/sor.c
+++ b/drivers/gpu/drm/tegra/sor.c
@@ -2875,21 +2875,21 @@
 		if (err < 0) {
 			dev_err(sor->dev, "failed to acquire SOR reset: %d\n",
 				err);
-			return err;
+			goto rpm_put;
 		}
 
 		err = reset_control_assert(sor->rst);
 		if (err < 0) {
 			dev_err(sor->dev, "failed to assert SOR reset: %d\n",
 				err);
-			return err;
+			goto rpm_put;
 		}
 	}
 
 	err = clk_prepare_enable(sor->clk);
 	if (err < 0) {
 		dev_err(sor->dev, "failed to enable clock: %d\n", err);
-		return err;
+		goto rpm_put;
 	}
 
 	usleep_range(1000, 3000);
@@ -2899,19 +2899,25 @@
 		if (err < 0) {
 			dev_err(sor->dev, "failed to deassert SOR reset: %d\n",
 				err);
-			return err;
+			clk_disable_unprepare(sor->clk);
+			goto rpm_put;
 		}
 
 		reset_control_release(sor->rst);
 	}
 
 	err = clk_prepare_enable(sor->clk_safe);
-	if (err < 0)
+	if (err < 0) {
+		clk_disable_unprepare(sor->clk);
 		return err;
+	}
 
 	err = clk_prepare_enable(sor->clk_dp);
-	if (err < 0)
+	if (err < 0) {
+		clk_disable_unprepare(sor->clk_safe);
+		clk_disable_unprepare(sor->clk);
 		return err;
+	}
 
 	/*
 	 * Enable and unmask the HDA codec SCRATCH0 register interrupt. This
@@ -2923,6 +2929,12 @@
 	tegra_sor_writel(sor, value, SOR_INT_MASK);
 
 	return 0;
+
+rpm_put:
+	if (sor->rst)
+		pm_runtime_put(sor->dev);
+
+	return err;
 }
 
 static int tegra_sor_exit(struct host1x_client *client)
@@ -3200,6 +3212,11 @@
 		 * earlier
 		 */
 		sor->pad = TEGRA_IO_PAD_HDMI_DP0 + sor->index;
+	} else {
+		if (sor->soc->supports_edp)
+			sor->index = 0;
+		else
+			sor->index = 1;
 	}
 
 	err = of_property_read_u32_array(np, "nvidia,xbar-cfg", xbar_cfg, 5);