Merge tag 'drm/tegra/for-5.6-rc1' of git://anongit.freedesktop.org/tegra/linux into drm-next

drm/tegra: Changes for v5.6-rc1

This contains a small set of mostly fixes and some minor improvements.

Signed-off-by: Dave Airlie <[email protected]>

From: Thierry Reding <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

Author: airlied

drivers/gpu/drm/tegra/dc.c

@@ -1727,6 +1727,7 @@ static void tegra_crtc_atomic_disable(struct drm_crtc *crtc,
 {
 	struct tegra_dc *dc = to_tegra_dc(crtc);
 	u32 value;
+	int err;
 
 	if (!tegra_dc_idle(dc)) {
 		tegra_dc_stop(dc);
@@ -1773,7 +1774,9 @@ static void tegra_crtc_atomic_disable(struct drm_crtc *crtc,
 
 	spin_unlock_irq(&crtc->dev->event_lock);
 
-	pm_runtime_put_sync(dc->dev);
+	err = host1x_client_suspend(&dc->client);
+	if (err < 0)
+		dev_err(dc->dev, "failed to suspend: %d\n", err);
 }
 
 static void tegra_crtc_atomic_enable(struct drm_crtc *crtc,
@@ -1783,8 +1786,13 @@ static void tegra_crtc_atomic_enable(struct drm_crtc *crtc,
 	struct tegra_dc_state *state = to_dc_state(crtc->state);
 	struct tegra_dc *dc = to_tegra_dc(crtc);
 	u32 value;
+	int err;
 
-	pm_runtime_get_sync(dc->dev);
+	err = host1x_client_resume(&dc->client);
+	if (err < 0) {
+		dev_err(dc->dev, "failed to resume: %d\n", err);
+		return;
+	}
 
 	/* initialize display controller */
 	if (dc->syncpt) {
@@ -1996,7 +2004,7 @@ static bool tegra_dc_has_window_groups(struct tegra_dc *dc)
 
 static int tegra_dc_init(struct host1x_client *client)
 {
-	struct drm_device *drm = dev_get_drvdata(client->parent);
+	struct drm_device *drm = dev_get_drvdata(client->host);
 	unsigned long flags = HOST1X_SYNCPT_CLIENT_MANAGED;
 	struct tegra_dc *dc = host1x_client_to_dc(client);
 	struct tegra_drm *tegra = drm->dev_private;
@@ -2012,6 +2020,15 @@ static int tegra_dc_init(struct host1x_client *client)
 	if (!tegra_dc_has_window_groups(dc))
 		return 0;
 
+	/*
+	 * Set the display hub as the host1x client parent for the display
+	 * controller. This is needed for the runtime reference counting that
+	 * ensures the display hub is always powered when any of the display
+	 * controllers are.
+	 */
+	if (dc->soc->has_nvdisplay)
+		client->parent = &tegra->hub->client;
+
 	dc->syncpt = host1x_syncpt_request(client, flags);
 	if (!dc->syncpt)
 		dev_warn(dc->dev, "failed to allocate syncpoint\n");
@@ -2077,9 +2094,9 @@ static int tegra_dc_init(struct host1x_client *client)
 
 	/*
 	 * Inherit the DMA parameters (such as maximum segment size) from the
-	 * parent device.
+	 * parent host1x device.
 	 */
-	client->dev->dma_parms = client->parent->dma_parms;
+	client->dev->dma_parms = client->host->dma_parms;
 
 	return 0;
 
@@ -2121,9 +2138,74 @@ static int tegra_dc_exit(struct host1x_client *client)
 	return 0;
 }
 
+static int tegra_dc_runtime_suspend(struct host1x_client *client)
+{
+	struct tegra_dc *dc = host1x_client_to_dc(client);
+	struct device *dev = client->dev;
+	int err;
+
+	err = reset_control_assert(dc->rst);
+	if (err < 0) {
+		dev_err(dev, "failed to assert reset: %d\n", err);
+		return err;
+	}
+
+	if (dc->soc->has_powergate)
+		tegra_powergate_power_off(dc->powergate);
+
+	clk_disable_unprepare(dc->clk);
+	pm_runtime_put_sync(dev);
+
+	return 0;
+}
+
+static int tegra_dc_runtime_resume(struct host1x_client *client)
+{
+	struct tegra_dc *dc = host1x_client_to_dc(client);
+	struct device *dev = client->dev;
+	int err;
+
+	err = pm_runtime_get_sync(dev);
+	if (err < 0) {
+		dev_err(dev, "failed to get runtime PM: %d\n", err);
+		return err;
+	}
+
+	if (dc->soc->has_powergate) {
+		err = tegra_powergate_sequence_power_up(dc->powergate, dc->clk,
+							dc->rst);
+		if (err < 0) {
+			dev_err(dev, "failed to power partition: %d\n", err);
+			goto put_rpm;
+		}
+	} else {
+		err = clk_prepare_enable(dc->clk);
+		if (err < 0) {
+			dev_err(dev, "failed to enable clock: %d\n", err);
+			goto put_rpm;
+		}
+
+		err = reset_control_deassert(dc->rst);
+		if (err < 0) {
+			dev_err(dev, "failed to deassert reset: %d\n", err);
+			goto disable_clk;
+		}
+	}
+
+	return 0;
+
+disable_clk:
+	clk_disable_unprepare(dc->clk);
+put_rpm:
+	pm_runtime_put_sync(dev);
+	return err;
+}
+
 static const struct host1x_client_ops dc_client_ops = {
 	.init = tegra_dc_init,
 	.exit = tegra_dc_exit,
+	.suspend = tegra_dc_runtime_suspend,
+	.resume = tegra_dc_runtime_resume,
 };
 
 static const struct tegra_dc_soc_info tegra20_dc_soc_info = {
@@ -2535,65 +2617,10 @@ static int tegra_dc_remove(struct platform_device *pdev)
 	return 0;
 }
 
-#ifdef CONFIG_PM
-static int tegra_dc_suspend(struct device *dev)
-{
-	struct tegra_dc *dc = dev_get_drvdata(dev);
-	int err;
-
-	err = reset_control_assert(dc->rst);
-	if (err < 0) {
-		dev_err(dev, "failed to assert reset: %d\n", err);
-		return err;
-	}
-
-	if (dc->soc->has_powergate)
-		tegra_powergate_power_off(dc->powergate);
-
-	clk_disable_unprepare(dc->clk);
-
-	return 0;
-}
-
-static int tegra_dc_resume(struct device *dev)
-{
-	struct tegra_dc *dc = dev_get_drvdata(dev);
-	int err;
-
-	if (dc->soc->has_powergate) {
-		err = tegra_powergate_sequence_power_up(dc->powergate, dc->clk,
-							dc->rst);
-		if (err < 0) {
-			dev_err(dev, "failed to power partition: %d\n", err);
-			return err;
-		}
-	} else {
-		err = clk_prepare_enable(dc->clk);
-		if (err < 0) {
-			dev_err(dev, "failed to enable clock: %d\n", err);
-			return err;
-		}
-
-		err = reset_control_deassert(dc->rst);
-		if (err < 0) {
-			dev_err(dev, "failed to deassert reset: %d\n", err);
-			return err;
-		}
-	}
-
-	return 0;
-}
-#endif
-
-static const struct dev_pm_ops tegra_dc_pm_ops = {
-	SET_RUNTIME_PM_OPS(tegra_dc_suspend, tegra_dc_resume, NULL)
-};
-
 struct platform_driver tegra_dc_driver = {
 	.driver = {
 		.name = "tegra-dc",
 		.of_match_table = tegra_dc_of_match,
-		.pm = &tegra_dc_pm_ops,
 	},
 	.probe = tegra_dc_probe,
 	.remove = tegra_dc_remove,

drivers/gpu/drm/tegra/dpaux.c

@@ -588,7 +588,7 @@ static int tegra_dpaux_remove(struct platform_device *pdev)
 	/* make sure pads are powered down when not in use */
 	tegra_dpaux_pad_power_down(dpaux);
 
-	pm_runtime_put(&pdev->dev);
+	pm_runtime_put_sync(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
 
 	drm_dp_aux_unregister(&dpaux->aux);

drivers/gpu/drm/tegra/drm.c

@@ -905,7 +905,7 @@ int tegra_drm_unregister_client(struct tegra_drm *tegra,
 int host1x_client_iommu_attach(struct host1x_client *client)
 {
 	struct iommu_domain *domain = iommu_get_domain_for_dev(client->dev);
-	struct drm_device *drm = dev_get_drvdata(client->parent);
+	struct drm_device *drm = dev_get_drvdata(client->host);
 	struct tegra_drm *tegra = drm->dev_private;
 	struct iommu_group *group = NULL;
 	int err;
@@ -941,7 +941,7 @@ int host1x_client_iommu_attach(struct host1x_client *client)
 
 void host1x_client_iommu_detach(struct host1x_client *client)
 {
-	struct drm_device *drm = dev_get_drvdata(client->parent);
+	struct drm_device *drm = dev_get_drvdata(client->host);
 	struct tegra_drm *tegra = drm->dev_private;
 	struct iommu_domain *domain;
 

drivers/gpu/drm/tegra/drm.h

@@ -144,6 +144,8 @@ int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
 void tegra_output_exit(struct tegra_output *output);
 void tegra_output_find_possible_crtcs(struct tegra_output *output,
 				      struct drm_device *drm);
+int tegra_output_suspend(struct tegra_output *output);
+int tegra_output_resume(struct tegra_output *output);
 
 int tegra_output_connector_get_modes(struct drm_connector *connector);
 enum drm_connector_status