drm/tegra: Move driver to DRM tree

In order to make subsystem-wide changes easier, move the Tegra DRM
driver back into the DRM tree.

Signed-off-by: Thierry Reding <treding@nvidia.com>

1 files changed, 0 insertions, 343 deletions

diff --git a/drivers/gpu/host1x/drm/gr2d.c b/drivers/gpu/host1x/drm/gr2d.c
deleted file mode 100644
index 4e407e30da1..00000000000
--- a/drivers/gpu/host1x/drm/gr2d.c
+++ /dev/null
@@ -1,343 +0,0 @@
-/*
- * Copyright (c) 2012-2013, NVIDIA Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <linux/clk.h>
-
-#include "drm.h"
-#include "gem.h"
-
-#define GR2D_NUM_REGS 0x4d
-
-struct gr2d {
-	struct tegra_drm_client client;
-	struct host1x_channel *channel;
-	struct clk *clk;
-
-	DECLARE_BITMAP(addr_regs, GR2D_NUM_REGS);
-};
-
-static inline struct gr2d *to_gr2d(struct tegra_drm_client *client)
-{
-	return container_of(client, struct gr2d, client);
-}
-
-static int gr2d_init(struct host1x_client *client)
-{
-	struct tegra_drm_client *drm = host1x_to_drm_client(client);
-	struct tegra_drm *tegra = dev_get_drvdata(client->parent);
-	struct gr2d *gr2d = to_gr2d(drm);
-
-	gr2d->channel = host1x_channel_request(client->dev);
-	if (!gr2d->channel)
-		return -ENOMEM;
-
-	client->syncpts[0] = host1x_syncpt_request(client->dev, false);
-	if (!client->syncpts[0]) {
-		host1x_channel_free(gr2d->channel);
-		return -ENOMEM;
-	}
-
-	return tegra_drm_register_client(tegra, drm);
-}
-
-static int gr2d_exit(struct host1x_client *client)
-{
-	struct tegra_drm_client *drm = host1x_to_drm_client(client);
-	struct tegra_drm *tegra = dev_get_drvdata(client->parent);
-	struct gr2d *gr2d = to_gr2d(drm);
-	int err;
-
-	err = tegra_drm_unregister_client(tegra, drm);
-	if (err < 0)
-		return err;
-
-	host1x_syncpt_free(client->syncpts[0]);
-	host1x_channel_free(gr2d->channel);
-
-	return 0;
-}
-
-static const struct host1x_client_ops gr2d_client_ops = {
-	.init = gr2d_init,
-	.exit = gr2d_exit,
-};
-
-static int gr2d_open_channel(struct tegra_drm_client *client,
-			     struct tegra_drm_context *context)
-{
-	struct gr2d *gr2d = to_gr2d(client);
-
-	context->channel = host1x_channel_get(gr2d->channel);
-	if (!context->channel)
-		return -ENOMEM;
-
-	return 0;
-}
-
-static void gr2d_close_channel(struct tegra_drm_context *context)
-{
-	host1x_channel_put(context->channel);
-}
-
-static struct host1x_bo *host1x_bo_lookup(struct drm_device *drm,
-					  struct drm_file *file,
-					  u32 handle)
-{
-	struct drm_gem_object *gem;
-	struct tegra_bo *bo;
-
-	gem = drm_gem_object_lookup(drm, file, handle);
-	if (!gem)
-		return NULL;
-
-	mutex_lock(&drm->struct_mutex);
-	drm_gem_object_unreference(gem);
-	mutex_unlock(&drm->struct_mutex);
-
-	bo = to_tegra_bo(gem);
-	return &bo->base;
-}
-
-static int gr2d_is_addr_reg(struct device *dev, u32 class, u32 offset)
-{
-	struct gr2d *gr2d = dev_get_drvdata(dev);
-
-	switch (class) {
-	case HOST1X_CLASS_HOST1X:
-		if (offset == 0x2b)
-			return 1;
-
-		break;
-
-	case HOST1X_CLASS_GR2D:
-	case HOST1X_CLASS_GR2D_SB:
-		if (offset >= GR2D_NUM_REGS)
-			break;
-
-		if (test_bit(offset, gr2d->addr_regs))
-			return 1;
-
-		break;
-	}
-
-	return 0;
-}
-
-static int gr2d_submit(struct tegra_drm_context *context,
-		       struct drm_tegra_submit *args, struct drm_device *drm,
-		       struct drm_file *file)
-{
-	unsigned int num_cmdbufs = args->num_cmdbufs;
-	unsigned int num_relocs = args->num_relocs;
-	unsigned int num_waitchks = args->num_waitchks;
-	struct drm_tegra_cmdbuf __user *cmdbufs =
-		(void * __user)(uintptr_t)args->cmdbufs;
-	struct drm_tegra_reloc __user *relocs =
-		(void * __user)(uintptr_t)args->relocs;
-	struct drm_tegra_waitchk __user *waitchks =
-		(void * __user)(uintptr_t)args->waitchks;
-	struct drm_tegra_syncpt syncpt;
-	struct host1x_job *job;
-	int err;
-
-	/* We don't yet support other than one syncpt_incr struct per submit */
-	if (args->num_syncpts != 1)
-		return -EINVAL;
-
-	job = host1x_job_alloc(context->channel, args->num_cmdbufs,
-			       args->num_relocs, args->num_waitchks);
-	if (!job)
-		return -ENOMEM;
-
-	job->num_relocs = args->num_relocs;
-	job->num_waitchk = args->num_waitchks;
-	job->client = (u32)args->context;
-	job->class = context->client->base.class;
-	job->serialize = true;
-
-	while (num_cmdbufs) {
-		struct drm_tegra_cmdbuf cmdbuf;
-		struct host1x_bo *bo;
-
-		err = copy_from_user(&cmdbuf, cmdbufs, sizeof(cmdbuf));
-		if (err)
-			goto fail;
-
-		bo = host1x_bo_lookup(drm, file, cmdbuf.handle);
-		if (!bo) {
-			err = -ENOENT;
-			goto fail;
-		}
-
-		host1x_job_add_gather(job, bo, cmdbuf.words, cmdbuf.offset);
-		num_cmdbufs--;
-		cmdbufs++;
-	}
-
-	err = copy_from_user(job->relocarray, relocs,
-			     sizeof(*relocs) * num_relocs);
-	if (err)
-		goto fail;
-
-	while (num_relocs--) {
-		struct host1x_reloc *reloc = &job->relocarray[num_relocs];
-		struct host1x_bo *cmdbuf, *target;
-
-		cmdbuf = host1x_bo_lookup(drm, file, (u32)reloc->cmdbuf);
-		target = host1x_bo_lookup(drm, file, (u32)reloc->target);
-
-		reloc->cmdbuf = cmdbuf;
-		reloc->target = target;
-
-		if (!reloc->target || !reloc->cmdbuf) {
-			err = -ENOENT;
-			goto fail;
-		}
-	}
-
-	err = copy_from_user(job->waitchk, waitchks,
-			     sizeof(*waitchks) * num_waitchks);
-	if (err)
-		goto fail;
-
-	err = copy_from_user(&syncpt, (void * __user)(uintptr_t)args->syncpts,
-			     sizeof(syncpt));
-	if (err)
-		goto fail;
-
-	job->syncpt_id = syncpt.id;
-	job->syncpt_incrs = syncpt.incrs;
-	job->timeout = 10000;
-	job->is_addr_reg = gr2d_is_addr_reg;
-
-	if (args->timeout && args->timeout < 10000)
-		job->timeout = args->timeout;
-
-	err = host1x_job_pin(job, context->client->base.dev);
-	if (err)
-		goto fail;
-
-	err = host1x_job_submit(job);
-	if (err)
-		goto fail_submit;
-
-	args->fence = job->syncpt_end;
-
-	host1x_job_put(job);
-	return 0;
-
-fail_submit:
-	host1x_job_unpin(job);
-fail:
-	host1x_job_put(job);
-	return err;
-}
-
-static const struct tegra_drm_client_ops gr2d_ops = {
-	.open_channel = gr2d_open_channel,
-	.close_channel = gr2d_close_channel,
-	.submit = gr2d_submit,
-};
-
-static const struct of_device_id gr2d_match[] = {
-	{ .compatible = "nvidia,tegra30-gr2d" },
-	{ .compatible = "nvidia,tegra20-gr2d" },
-	{ },
-};
-
-static const u32 gr2d_addr_regs[] = {
-	0x1a, 0x1b, 0x26, 0x2b, 0x2c, 0x2d, 0x31, 0x32,
-	0x48, 0x49, 0x4a, 0x4b, 0x4c
-};
-
-static int gr2d_probe(struct platform_device *pdev)
-{
-	struct device *dev = &pdev->dev;
-	struct host1x_syncpt **syncpts;
-	struct gr2d *gr2d;
-	unsigned int i;
-	int err;
-
-	gr2d = devm_kzalloc(dev, sizeof(*gr2d), GFP_KERNEL);
-	if (!gr2d)
-		return -ENOMEM;
-
-	syncpts = devm_kzalloc(dev, sizeof(*syncpts), GFP_KERNEL);
-	if (!syncpts)
-		return -ENOMEM;
-
-	gr2d->clk = devm_clk_get(dev, NULL);
-	if (IS_ERR(gr2d->clk)) {
-		dev_err(dev, "cannot get clock\n");
-		return PTR_ERR(gr2d->clk);
-	}
-
-	err = clk_prepare_enable(gr2d->clk);
-	if (err) {
-		dev_err(dev, "cannot turn on clock\n");
-		return err;
-	}
-
-	INIT_LIST_HEAD(&gr2d->client.base.list);
-	gr2d->client.base.ops = &gr2d_client_ops;
-	gr2d->client.base.dev = dev;
-	gr2d->client.base.class = HOST1X_CLASS_GR2D;
-	gr2d->client.base.syncpts = syncpts;
-	gr2d->client.base.num_syncpts = 1;
-
-	INIT_LIST_HEAD(&gr2d->client.list);
-	gr2d->client.ops = &gr2d_ops;
-
-	err = host1x_client_register(&gr2d->client.base);
-	if (err < 0) {
-		dev_err(dev, "failed to register host1x client: %d\n", err);
-		return err;
-	}
-
-	/* initialize address register map */
-	for (i = 0; i < ARRAY_SIZE(gr2d_addr_regs); i++)
-		set_bit(gr2d_addr_regs[i], gr2d->addr_regs);
-
-	platform_set_drvdata(pdev, gr2d);
-
-	return 0;
-}
-
-static int gr2d_remove(struct platform_device *pdev)
-{
-	struct gr2d *gr2d = platform_get_drvdata(pdev);
-	int err;
-
-	err = host1x_client_unregister(&gr2d->client.base);
-	if (err < 0) {
-		dev_err(&pdev->dev, "failed to unregister host1x client: %d\n",
-			err);
-		return err;
-	}
-
-	clk_disable_unprepare(gr2d->clk);
-
-	return 0;
-}
-
-struct platform_driver tegra_gr2d_driver = {
-	.driver = {
-		.name = "tegra-gr2d",
-		.of_match_table = gr2d_match,
-	},
-	.probe = gr2d_probe,
-	.remove = gr2d_remove,
-};