change otg to host mode

hc

2024-05-11 04dd17822334871b23ea2862f7798fb0e0007777

 kernel/drivers/gpu/drm/tegra/gr3d.c
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@@ -1,10 +1,7 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Copyright (C) 2013 Avionic Design GmbH
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  * Copyright (C) 2013 NVIDIA Corporation
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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  */
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 #include <linux/clk.h>
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@@ -26,7 +23,6 @@
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 };
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 struct gr3d {
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-	struct iommu_group *group;
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 	struct tegra_drm_client client;
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 	struct host1x_channel *channel;
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 	struct clk *clk_secondary;
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@@ -47,12 +43,12 @@
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 static int gr3d_init(struct host1x_client *client)
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 {
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 	struct tegra_drm_client *drm = host1x_to_drm_client(client);
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-	struct drm_device *dev = dev_get_drvdata(client->parent);
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+	struct drm_device *dev = dev_get_drvdata(client->host);
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 	unsigned long flags = HOST1X_SYNCPT_HAS_BASE;
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 	struct gr3d *gr3d = to_gr3d(drm);
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 	int err;
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-	gr3d->channel = host1x_channel_request(client->dev);
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+	gr3d->channel = host1x_channel_request(client);
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 	if (!gr3d->channel)
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 		return -ENOMEM;
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..
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@@ -63,9 +59,8 @@
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 		goto put;
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 	}
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-	gr3d->group = host1x_client_iommu_attach(client, false);
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-	if (IS_ERR(gr3d->group)) {
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-		err = PTR_ERR(gr3d->group);
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+	err = host1x_client_iommu_attach(client);
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+	if (err < 0) {
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 		dev_err(client->dev, "failed to attach to domain: %d\n", err);
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 		goto free;
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 	}
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@@ -79,7 +74,7 @@
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 	return 0;
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 detach:
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-	host1x_client_iommu_detach(client, gr3d->group);
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+	host1x_client_iommu_detach(client);
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 free:
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 	host1x_syncpt_free(client->syncpts[0]);
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 put:
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@@ -90,7 +85,7 @@
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 static int gr3d_exit(struct host1x_client *client)
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 {
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 	struct tegra_drm_client *drm = host1x_to_drm_client(client);
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-	struct drm_device *dev = dev_get_drvdata(client->parent);
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+	struct drm_device *dev = dev_get_drvdata(client->host);
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 	struct gr3d *gr3d = to_gr3d(drm);
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 	int err;
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..
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@@ -98,7 +93,7 @@
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 	if (err < 0)
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 		return err;
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-	host1x_client_iommu_detach(client, gr3d->group);
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+	host1x_client_iommu_detach(client);
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 	host1x_syncpt_free(client->syncpts[0]);
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 	host1x_channel_put(gr3d->channel);
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..
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@@ -386,10 +381,12 @@
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 	}
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 	if (gr3d->clk_secondary) {
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+		reset_control_assert(gr3d->rst_secondary);
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 		tegra_powergate_power_off(TEGRA_POWERGATE_3D1);
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 		clk_disable_unprepare(gr3d->clk_secondary);
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 	}
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+	reset_control_assert(gr3d->rst);
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 	tegra_powergate_power_off(TEGRA_POWERGATE_3D);
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 	clk_disable_unprepare(gr3d->clk);
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