Add client driver for 2D device, and IOCTLs to pass work to host1x
channel for 2D.
Also adds functions that can be called to access sync points from
DRM.
Signed-off-by: Arto Merilainen <amerilainen@xxxxxxxxxx>
Signed-off-by: Terje Bergstrom <tbergstrom@xxxxxxxxxx>
---
drivers/gpu/host1x/Makefile | 1 +
drivers/gpu/host1x/dev.c | 7 +
drivers/gpu/host1x/drm/drm.c | 251 ++++++++++++++++++++++++++++++-
drivers/gpu/host1x/drm/drm.h | 28 +++-
drivers/gpu/host1x/drm/gr2d.c | 330 +++++++++++++++++++++++++++++++++++++++++
drivers/gpu/host1x/host1x.h | 3 +-
include/drm/tegra_drm.h | 131 ++++++++++++++++
7 files changed, 747 insertions(+), 4 deletions(-)
create mode 100644 drivers/gpu/host1x/drm/gr2d.c
create mode 100644 include/drm/tegra_drm.h
diff --git a/drivers/gpu/host1x/Makefile b/drivers/gpu/host1x/Makefile
index e85db5a..29c0c6b 100644
--- a/drivers/gpu/host1x/Makefile
+++ b/drivers/gpu/host1x/Makefile
@@ -16,4 +16,5 @@ ccflags-$(CONFIG_DRM_TEGRA_DEBUG) += -DDEBUG
host1x-$(CONFIG_DRM_TEGRA) += drm/drm.o drm/fb.o drm/dc.o
host1x-$(CONFIG_DRM_TEGRA) += drm/output.o drm/rgb.o drm/hdmi.o
host1x-$(CONFIG_DRM_TEGRA) += drm/cma.o
+host1x-$(CONFIG_DRM_TEGRA) += drm/gr2d.o
obj-$(CONFIG_TEGRA_HOST1X) += host1x.o
diff --git a/drivers/gpu/host1x/dev.c b/drivers/gpu/host1x/dev.c
index 6af8081..0091632 100644
--- a/drivers/gpu/host1x/dev.c
+++ b/drivers/gpu/host1x/dev.c
@@ -211,11 +211,17 @@ static int __init tegra_host1x_init(void)
err = platform_driver_register(&tegra_hdmi_driver);
if (err < 0)
goto unregister_dc;
+
+ err = platform_driver_register(&tegra_gr2d_driver);
+ if (err < 0)
+ goto unregister_hdmi;
#endif
return 0;
#ifdef CONFIG_DRM_TEGRA
+unregister_hdmi:
+ platform_driver_unregister(&tegra_hdmi_driver);
unregister_dc:
platform_driver_unregister(&tegra_dc_driver);
unregister_host1x:
@@ -228,6 +234,7 @@ module_init(tegra_host1x_init);
static void __exit tegra_host1x_exit(void)
{
#ifdef CONFIG_DRM_TEGRA
+ platform_driver_unregister(&tegra_gr2d_driver);
platform_driver_unregister(&tegra_hdmi_driver);
platform_driver_unregister(&tegra_dc_driver);
#endif
diff --git a/drivers/gpu/host1x/drm/drm.c b/drivers/gpu/host1x/drm/drm.c
index dbd4808..9f78f52 100644
--- a/drivers/gpu/host1x/drm/drm.c
+++ b/drivers/gpu/host1x/drm/drm.c
@@ -1,6 +1,6 @@
/*
* Copyright (C) 2012 Avionic Design GmbH
- * Copyright (C) 2012 NVIDIA CORPORATION. All rights reserved.
+ * Copyright (C) 2012-2013 NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -8,13 +8,21 @@
*/
#include <asm/dma-iommu.h>
+#include <drm/drm.h>
+#include <drm/drmP.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/tegra_drm.h>
#include <linux/module.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/dma-mapping.h>
+#include "cma.h"
+#include "dev.h"
#include "drm.h"
+#include "host1x_bo.h"
#include "host1x_client.h"
+#include "syncpt.h"
#define DRIVER_NAME "tegra"
#define DRIVER_DESC "NVIDIA Tegra graphics"
@@ -77,8 +85,10 @@ static int host1x_parse_dt(struct host1x_drm *host1x)
static const char * const compat[] = {
"nvidia,tegra20-dc",
"nvidia,tegra20-hdmi",
+ "nvidia,tegra20-gr2d",
"nvidia,tegra30-dc",
"nvidia,tegra30-hdmi",
+ "nvidia,tegra30-gr2d",
};
unsigned int i;
int err;
@@ -273,9 +283,24 @@ static int tegra_drm_unload(struct drm_device *drm)
static int tegra_drm_open(struct drm_device *drm, struct drm_file *filp)
{
+ struct host1x_drm_file *fpriv;
+
+ fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL);
+ if (!fpriv)
+ return -ENOMEM;
+
+ INIT_LIST_HEAD(&fpriv->contexts);
+ filp->driver_priv = fpriv;
+
return 0;
}
+static void host1x_drm_context_free(struct host1x_drm_context *context)
+{
+ context->client->ops->close_channel(context);
+ kfree(context);
+}
+
static void tegra_drm_lastclose(struct drm_device *drm)
{
struct host1x_drm *host1x = drm->dev_private;
@@ -283,7 +308,222 @@ static void tegra_drm_lastclose(struct drm_device *drm)
drm_fbdev_cma_restore_mode(host1x->fbdev);
}
+static int tegra_drm_ioctl_syncpt_read(struct drm_device *drm, void *data,
+ struct drm_file *file_priv)
+{
+ struct tegra_drm_syncpt_read_args *args = data;
+ struct host1x *host = host1x_get_host(drm->dev);
+ struct host1x_syncpt *sp = host1x_syncpt_get(host, args->id);
+
+ if (!sp)
+ return -EINVAL;
+
+ args->value = host1x_syncpt_read_min(sp);
+ return 0;
+}
+
+static int tegra_drm_ioctl_syncpt_incr(struct drm_device *drm, void *data,
+ struct drm_file *file_priv)
+{
+ struct tegra_drm_syncpt_incr_args *args = data;
+ struct host1x *host = host1x_get_host(drm->dev);
+ struct host1x_syncpt *sp = host1x_syncpt_get(host, args->id);
+
+ if (!sp)
+ return -EINVAL;
+
+ host1x_syncpt_incr(sp);
+ return 0;
+}
+
+static int tegra_drm_ioctl_syncpt_wait(struct drm_device *drm, void *data,
+ struct drm_file *file_priv)
+{
+ struct tegra_drm_syncpt_wait_args *args = data;
+ struct host1x *host = host1x_get_host(drm->dev);
+ struct host1x_syncpt *sp = host1x_syncpt_get(host, args->id);
+
+ if (!sp)
+ return -EINVAL;
+
+ return host1x_syncpt_wait(sp, args->thresh, args->timeout,
+ &args->value);
+}
+
+static inline struct host1x_drm_context *tegra_drm_get_context(
+ struct list_head *contexts,
+ struct host1x_drm_context *_ctx)
+{
+ struct host1x_drm_context *ctx;
+
+ list_for_each_entry(ctx, contexts, list)
+ if (ctx == _ctx)
+ return ctx;
+ return NULL;
+}
+
+static int tegra_drm_ioctl_open_channel(struct drm_device *drm, void *data,
+ struct drm_file *file_priv)
+{
+ struct tegra_drm_open_channel_args *args = data;
+ struct host1x_client *client;
+ struct host1x_drm_context *context;
+ struct host1x_drm_file *fpriv = file_priv->driver_priv;
+ struct host1x_drm *host1x = drm->dev_private;
+ int err = -ENODEV;
+
+ context = kzalloc(sizeof(*context), GFP_KERNEL);
+ if (!context)
+ return -ENOMEM;
+
+ list_for_each_entry(client, &host1x->clients, list)
+ if (client->class == args->class) {
+ context->client = client;
+ err = client->ops->open_channel(client, context);
+ if (err)
+ break;
+
+ list_add(&context->list, &fpriv->contexts);
+ args->context = (uintptr_t)context;
+ return 0;
+ }
+
+ kfree(context);
+ return err;
+}
+
+static int tegra_drm_ioctl_close_channel(struct drm_device *drm, void *data,
+ struct drm_file *file_priv)
+{
+ struct tegra_drm_open_channel_args *args = data;
+ struct host1x_drm_file *fpriv = file_priv->driver_priv;
+ struct host1x_drm_context *context =
+ (struct host1x_drm_context *)(uintptr_t)args->context;
+
+ if (!tegra_drm_get_context(&fpriv->contexts, context))
+ return -EINVAL;
+
+ list_del(&context->list);
+ host1x_drm_context_free(context);
+
+ return 0;
+}
+
+static int tegra_drm_ioctl_get_syncpoint(struct drm_device *drm, void *data,
+ struct drm_file *file_priv)
+{
+ struct tegra_drm_get_syncpoint *args = data;
+ struct host1x_drm_file *fpriv = file_priv->driver_priv;
+ struct host1x_drm_context *context =
+ (struct host1x_drm_context *)(uintptr_t)args->context;
+
+ if (!tegra_drm_get_context(&fpriv->contexts, context))
+ return -ENODEV;
+
+ if (context->client->num_syncpts < args->param)
+ return -ENODEV;
+
+ args->value = host1x_syncpt_id(context->client->syncpts[args->param]);
+
+ return 0;
+}
+
+static int tegra_drm_ioctl_submit(struct drm_device *drm, void *data,
+ struct drm_file *file_priv)
+{
+ struct tegra_drm_submit_args *args = data;
+ struct host1x_drm_file *fpriv = file_priv->driver_priv;
+ struct host1x_drm_context *context =
+ (struct host1x_drm_context *)(uintptr_t)args->context;
+
+ if (!tegra_drm_get_context(&fpriv->contexts, context))
+ return -ENODEV;
+
+ return context->client->ops->submit(context, args, drm, file_priv);
+}
+
+static int tegra_drm_gem_create_ioctl(struct drm_device *drm, void *data,
+ struct drm_file *file_priv)
+{
+ struct tegra_drm_create *args = data;
+ struct drm_gem_cma_object *cma_obj;
+ struct tegra_drm_bo *cma_bo;
+ int ret;
+
+ cma_bo = kzalloc(sizeof(*cma_bo), GFP_KERNEL);
+ if (!cma_bo)
+ return -ENOMEM;
+
+ host1x_bo_init(&cma_bo->base, &tegra_drm_bo_ops);
+
+ cma_obj = &cma_bo->cma_obj;
+ ret = drm_gem_cma_object_init(drm, cma_obj, args->size);
+ if (ret)
+ goto err_cma_create;
+
+ ret = drm_gem_handle_create(file_priv, &cma_obj->base, &args->handle);
+ if (ret)
+ goto err_handle_create;
+
+ drm_gem_object_unreference(&cma_obj->base);
+
+ return 0;
+
+err_handle_create:
+ drm_gem_cma_free_object(&cma_obj->base);
+err_cma_create:
+ kfree(cma_bo);
+ return -ENOMEM;
+}
+
+static int tegra_drm_ioctl_get_offset(struct drm_device *drm, void *data,
+ struct drm_file *file_priv)
+{
+ struct tegra_drm_get_offset *args = data;
+ struct drm_gem_cma_object *cma_obj;
+ struct drm_gem_object *obj;
+
+ obj = drm_gem_object_lookup(drm, file_priv, args->handle);
+ if (!obj)
+ return -EINVAL;
+ cma_obj = to_drm_gem_cma_obj(obj);
+
+ args->offset = cma_obj->base.map_list.hash.key << PAGE_SHIFT;
+
+ drm_gem_object_unreference(&cma_obj->base);
+
+ return 0;
+}
+
+static void tegra_drm_gem_free_object(struct drm_gem_object *obj)
+{
+ struct drm_gem_cma_object *cma_obj = to_drm_gem_cma_obj(obj);
+ struct tegra_drm_bo *cma_bo =
+ container_of(cma_obj, struct tegra_drm_bo, cma_obj);
+
+ drm_gem_cma_object_deinit(obj);
+ kfree(cma_bo);
+}
+
static struct drm_ioctl_desc tegra_drm_ioctls[] = {
+ DRM_IOCTL_DEF_DRV(TEGRA_DRM_GEM_CREATE,
+ tegra_drm_gem_create_ioctl, DRM_UNLOCKED | DRM_AUTH),
+ DRM_IOCTL_DEF_DRV(TEGRA_DRM_SYNCPT_READ,
+ tegra_drm_ioctl_syncpt_read, DRM_UNLOCKED),
+ DRM_IOCTL_DEF_DRV(TEGRA_DRM_SYNCPT_INCR,
+ tegra_drm_ioctl_syncpt_incr, DRM_UNLOCKED),
+ DRM_IOCTL_DEF_DRV(TEGRA_DRM_SYNCPT_WAIT,
+ tegra_drm_ioctl_syncpt_wait, DRM_UNLOCKED),
+ DRM_IOCTL_DEF_DRV(TEGRA_DRM_OPEN_CHANNEL,
+ tegra_drm_ioctl_open_channel, DRM_UNLOCKED),
+ DRM_IOCTL_DEF_DRV(TEGRA_DRM_CLOSE_CHANNEL,
+ tegra_drm_ioctl_close_channel, DRM_UNLOCKED),
+ DRM_IOCTL_DEF_DRV(TEGRA_DRM_GET_SYNCPOINT,
+ tegra_drm_ioctl_get_syncpoint, DRM_UNLOCKED),
+ DRM_IOCTL_DEF_DRV(TEGRA_DRM_SUBMIT,
+ tegra_drm_ioctl_submit, DRM_UNLOCKED),
+ DRM_IOCTL_DEF_DRV(TEGRA_DRM_GEM_GET_OFFSET,
+ tegra_drm_ioctl_get_offset, DRM_UNLOCKED),
};
static const struct file_operations tegra_drm_fops = {
@@ -345,10 +585,17 @@ static void tegra_drm_disable_vblank(struct drm_device *drm, int pipe)
static void tegra_drm_preclose(struct drm_device *drm, struct drm_file *file)
{
+ struct host1x_drm_file *fpriv = file->driver_priv;
+ struct host1x_drm_context *context, *tmp;
struct drm_crtc *crtc;
list_for_each_entry(crtc, &drm->mode_config.crtc_list, head)
tegra_dc_cancel_page_flip(crtc, file);
+
+ list_for_each_entry_safe(context, tmp, &fpriv->contexts, list)
+ host1x_drm_context_free(context);
+ kfree(fpriv);
+
}
#ifdef CONFIG_DEBUG_FS
@@ -407,7 +654,7 @@ struct drm_driver tegra_drm_driver = {
.debugfs_cleanup = tegra_debugfs_cleanup,
#endif
- .gem_free_object = drm_gem_cma_free_object,
+ .gem_free_object = tegra_drm_gem_free_object,
.gem_vm_ops = &drm_gem_cma_vm_ops,
.dumb_create = drm_gem_cma_dumb_create,
.dumb_map_offset = drm_gem_cma_dumb_map_offset,
diff --git a/drivers/gpu/host1x/drm/drm.h b/drivers/gpu/host1x/drm/drm.h
index 0b8738f..6a8d7e3 100644
--- a/drivers/gpu/host1x/drm/drm.h
+++ b/drivers/gpu/host1x/drm/drm.h
@@ -1,6 +1,6 @@
/*
* Copyright (C) 2012 Avionic Design GmbH
- * Copyright (C) 2012 NVIDIA CORPORATION. All rights reserved.
+ * Copyright (C) 2012-2013 NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -17,6 +17,9 @@
#include <drm/drm_gem_cma_helper.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_fixed.h>
+#include <drm/tegra_drm.h>
+
+#include "host1x.h"
struct host1x_drm {
struct drm_device *drm;
@@ -38,9 +41,26 @@ struct host1x_drm {
struct host1x_client;
+struct host1x_drm_context {
+ struct host1x_client *client;
+ struct host1x_channel *channel;
+ struct list_head list;
+};
+
struct host1x_client_ops {
int (*drm_init)(struct host1x_client *client, struct drm_device *drm);
int (*drm_exit)(struct host1x_client *client);
+ int (*open_channel)(struct host1x_client *client,
+ struct host1x_drm_context *context);
+ void (*close_channel)(struct host1x_drm_context *context);
+ int (*submit)(struct host1x_drm_context *context,
+ struct tegra_drm_submit_args *args,
+ struct drm_device *drm,
+ struct drm_file *file_priv);
+};
+
+struct host1x_drm_file {
+ struct list_head contexts;
};
struct host1x_client {
@@ -49,6 +69,12 @@ struct host1x_client {
const struct host1x_client_ops *ops;
+ enum host1x_class class;
+ struct host1x_channel *channel;
+
+ struct host1x_syncpt **syncpts;
+ unsigned int num_syncpts;
+
struct list_head list;
};
diff --git a/drivers/gpu/host1x/drm/gr2d.c b/drivers/gpu/host1x/drm/gr2d.c
new file mode 100644
index 0000000..f060069
--- /dev/null
+++ b/drivers/gpu/host1x/drm/gr2d.c
@@ -0,0 +1,330 @@
+/*
+ * drivers/video/tegra/host/gr2d/gr2d.c
+ *
+ * Tegra Graphics 2D
+ *
+ * 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/export.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/clk.h>
+#include <drm/tegra_drm.h>
+
+#include "channel.h"
+#include "drm.h"
+#include "drm/cma.h"
+#include "job.h"
+#include "host1x.h"
+#include "host1x_bo.h"
+#include "host1x_client.h"
+#include "syncpt.h"
+
+struct gr2d {
+ struct host1x_client client;
+ struct clk *clk;
+ struct host1x_channel *channel;
+ unsigned long *addr_regs;
+};
+
+static int gr2d_is_addr_reg(struct device *dev, u32 class, u32 reg);
+
+static int gr2d_client_init(struct host1x_client *client,
+ struct drm_device *drm)
+{
+ return 0;
+}
+
+static int gr2d_client_exit(struct host1x_client *client)
+{
+ return 0;
+}
+
+static int gr2d_open_channel(struct host1x_client *client,
+ struct host1x_drm_context *context)
+{
+ struct gr2d *gr2d = dev_get_drvdata(client->dev);
+ context->channel = host1x_channel_get(gr2d->channel);
+
+ if (!context->channel)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static void gr2d_close_channel(struct host1x_drm_context *context)
+{
+ host1x_channel_put(context->channel);
+}
+
+static struct host1x_bo *handle_cma_to_host1x(struct drm_device *drm,
+ struct drm_file *file_priv,
+ u32 gem_handle)
+{
+ struct drm_gem_object *gem_obj;
+ struct drm_gem_cma_object *cma_obj;
+ struct tegra_drm_bo *cma_bo;
+
+ gem_obj = drm_gem_object_lookup(drm, file_priv, gem_handle);
+ if (!gem_obj)
+ return 0;
+
+ mutex_lock(&drm->struct_mutex);
+ drm_gem_object_unreference(gem_obj);
+ mutex_unlock(&drm->struct_mutex);
+
+ cma_obj = to_drm_gem_cma_obj(gem_obj);
+ cma_bo = container_of(cma_obj, struct tegra_drm_bo, cma_obj);
+
+ return &cma_bo->base;
+}
+
+static int gr2d_submit(struct host1x_drm_context *context,
+ struct tegra_drm_submit_args *args,
+ struct drm_device *drm,
+ struct drm_file *file_priv)
+{
+ struct host1x_job *job;
+ int num_cmdbufs = args->num_cmdbufs;
+ int num_relocs = args->num_relocs;
+ int num_waitchks = args->num_waitchks;
+ struct tegra_drm_cmdbuf __user *cmdbufs =
+ (void * __user)(uintptr_t)args->cmdbufs;
+ struct tegra_drm_reloc __user *relocs =
+ (void * __user)(uintptr_t)args->relocs;
+ struct tegra_drm_waitchk __user *waitchks =
+ (void * __user)(uintptr_t)args->waitchks;
+ struct tegra_drm_syncpt_incr syncpt_incr;
+ int err;
+
+ /* We don't yet support other than one syncpt_incr struct per submit */
+ if (args->num_syncpt_incrs != 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->class;
+ job->serialize = true;
+
+ while (num_cmdbufs) {
+ struct tegra_drm_cmdbuf cmdbuf;
+ struct host1x_bo *mem_handle;
+ err = copy_from_user(&cmdbuf, cmdbufs, sizeof(cmdbuf));
+ if (err)
+ goto fail;
+
+ mem_handle = handle_cma_to_host1x(drm, file_priv, cmdbuf.mem);
+ if (!mem_handle)
+ goto fail;
+
+ host1x_job_add_gather(job, mem_handle,
+ 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--) {
+ job->relocarray[num_relocs].cmdbuf_mem =
+ handle_cma_to_host1x(drm, file_priv,
+ (u32)job->relocarray[num_relocs].cmdbuf_mem);
+ job->relocarray[num_relocs].target =
+ handle_cma_to_host1x(drm, file_priv,
+ (u32)job->relocarray[num_relocs].target);
+
+ if (!job->relocarray[num_relocs].target ||
+ !job->relocarray[num_relocs].cmdbuf_mem)
+ goto fail;
+ }
+
+ err = copy_from_user(job->waitchk, waitchks,
+ sizeof(*waitchks) * num_waitchks);
+ if (err)
+ goto fail;
+
+ err = host1x_job_pin(job, context->client->dev);
+ if (err)
+ goto fail;
+
+ err = copy_from_user(&syncpt_incr,
+ (void * __user)(uintptr_t)args->syncpt_incrs,
+ sizeof(syncpt_incr));
+ if (err)
+ goto fail;
+
+ job->syncpt_id = syncpt_incr.id;
+ job->syncpt_incrs = syncpt_incr.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_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 struct host1x_client_ops gr2d_client_ops = {
+ .drm_init = gr2d_client_init,
+ .drm_exit = gr2d_client_exit,
+ .open_channel = gr2d_open_channel,
+ .close_channel = gr2d_close_channel,
+ .submit = gr2d_submit,
+};
+
+static void gr2d_init_addr_reg_map(struct device *dev, struct gr2d *gr2d)
+{
+ const u32 gr2d_addr_regs[] = {0x1a, 0x1b, 0x26, 0x2b, 0x2c, 0x2d, 0x31,
+ 0x32, 0x48, 0x49, 0x4a, 0x4b, 0x4c};
+ unsigned long *bitmap;
+ int i;
+
+ bitmap = devm_kzalloc(dev, DIV_ROUND_UP(256, BITS_PER_BYTE),
+ GFP_KERNEL);
+
+ for (i = 0; i < ARRAY_SIZE(gr2d_addr_regs); ++i) {
+ u32 reg = gr2d_addr_regs[i];
+ bitmap[BIT_WORD(reg)] |= BIT_MASK(reg);
+ }
+
+ gr2d->addr_regs = bitmap;
+}
+
+static int gr2d_is_addr_reg(struct device *dev, u32 class, u32 reg)
+{
+ struct gr2d *gr2d = dev_get_drvdata(dev);
+
+ switch (class) {
+ case HOST1X_CLASS_HOST1X:
+ return reg == 0x2b;
+ case HOST1X_CLASS_GR2D:
+ reg &= 0xff;
+ if (gr2d->addr_regs[BIT_WORD(reg)] & BIT_MASK(reg))
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+static const struct of_device_id gr2d_match[] = {
+ { .compatible = "nvidia,tegra30-gr2d" },
+ { .compatible = "nvidia,tegra20-gr2d" },
+ { },
+};
+
+static int gr2d_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct host1x_drm *host1x = host1x_get_drm_data(dev->parent);
+ int err;
+ struct gr2d *gr2d = NULL;
+ struct host1x_syncpt **syncpts;
+
+ 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;
+ }
+
+ gr2d->channel = host1x_channel_alloc(dev);
+ if (!gr2d->channel)
+ return -ENOMEM;
+
+ *syncpts = host1x_syncpt_request(dev, 0);
+ if (!(*syncpts)) {
+ host1x_channel_free(gr2d->channel);
+ return -ENOMEM;
+ }
+
+ gr2d->client.ops = &gr2d_client_ops;
+ gr2d->client.dev = dev;
+ gr2d->client.class = HOST1X_CLASS_GR2D;
+ gr2d->client.syncpts = syncpts;
+ gr2d->client.num_syncpts = 1;
+
+ err = host1x_register_client(host1x, &gr2d->client);
+ if (err < 0) {
+ dev_err(dev, "failed to register host1x client: %d\n", err);
+ return err;
+ }
+
+ gr2d_init_addr_reg_map(dev, gr2d);
+
+ dev_set_drvdata(dev, gr2d);
+
+ return 0;
+}
+
+static int __exit gr2d_remove(struct platform_device *pdev)
+{
+ struct host1x_drm *host1x = host1x_get_drm_data(pdev->dev.parent);
+ struct gr2d *gr2d = platform_get_drvdata(pdev);
+ int err;
+
+ err = host1x_unregister_client(host1x, &gr2d->client);
+ if (err < 0) {
+ dev_err(&pdev->dev, "failed to unregister client: %d\n", err);
+ return err;
+ }
+
+ host1x_syncpt_free(*gr2d->client.syncpts);
+ return 0;
+}
+
+struct platform_driver tegra_gr2d_driver = {
+ .probe = gr2d_probe,
+ .remove = __exit_p(gr2d_remove),
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "gr2d",
+ .of_match_table = gr2d_match,
+ }
+};
diff --git a/drivers/gpu/host1x/host1x.h b/drivers/gpu/host1x/host1x.h
index bca6563..128cc9e 100644
--- a/drivers/gpu/host1x/host1x.h
+++ b/drivers/gpu/host1x/host1x.h
@@ -22,7 +22,8 @@
#define __LINUX_HOST1X_H
enum host1x_class {
- HOST1X_CLASS_HOST1X = 0x1
+ HOST1X_CLASS_HOST1X = 0x1,
+ HOST1X_CLASS_GR2D = 0x51
};
#endif
diff --git a/include/drm/tegra_drm.h b/include/drm/tegra_drm.h
new file mode 100644
index 0000000..6f7f7e6
--- /dev/null
+++ b/include/drm/tegra_drm.h
@@ -0,0 +1,131 @@
+/*
+ * Copyright (c) 2012-2013, NVIDIA CORPORATION. All rights reserved.
+ *
+ * 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/>.
+ */
+
+#ifndef _TEGRA_DRM_H_
+#define _TEGRA_DRM_H_
+
+struct tegra_drm_create {
+ __u64 size;
+ u32 flags;
+ u32 handle;
+ u32 offset;
+ u32 padding;
+};
+
+struct tegra_drm_get_offset {
+ __u32 handle;
+ __u32 offset;
+};
+
+struct tegra_drm_syncpt_read_args {
+ __u32 id;
+ __u32 value;
+};
+
+struct tegra_drm_syncpt_incr_args {
+ __u32 id;
+ __u32 pad;
+};
+
+struct tegra_drm_syncpt_wait_args {
+ __u32 id;
+ __u32 thresh;
+ __u32 timeout;
+ __u32 value;
+};
+
+#define DRM_TEGRA_NO_TIMEOUT (0xffffffff)
+
+struct tegra_drm_open_channel_args {
+ __u32 class;
+ __u32 pad;
+ __u64 context;
+};
+
+struct tegra_drm_get_syncpoint {
+ __u64 context;
+ __u32 param;
+ __u32 value;
+};
+
+struct tegra_drm_syncpt_incr {
+ __u32 id;
+ __u32 incrs;
+};
+
+struct tegra_drm_cmdbuf {
+ __u32 mem;
+ __u32 offset;
+ __u32 words;
+ __u32 pad;
+};
+
+struct tegra_drm_reloc {
+ __u32 cmdbuf_mem;
+ __u32 cmdbuf_offset;
+ __u32 target;
+ __u32 target_offset;
+ __u32 shift;
+ __u32 pad;
+};
+
+struct tegra_drm_waitchk {
+ __u32 mem;
+ __u32 offset;
+ __u32 syncpt_id;
+ __u32 thresh;
+};
+
+struct tegra_drm_submit_args {
+ __u64 context;
+ __u32 num_syncpt_incrs;
+ __u32 num_cmdbufs;
+ __u32 num_relocs;
+ __u32 submit_version;
+ __u32 num_waitchks;
+ __u32 waitchk_mask;
+ __u32 timeout;
+ __u32 pad;
+ __u64 syncpt_incrs;
+ __u64 cmdbufs;
+ __u64 relocs;
+ __u64 waitchks;
+ __u32 fence; /* Return value */
+
+ __u32 reserved[5]; /* future expansion */
+};
+
+#define DRM_TEGRA_DRM_GEM_CREATE 0x00
+#define DRM_TEGRA_DRM_SYNCPT_READ 0x01
+#define DRM_TEGRA_DRM_SYNCPT_INCR 0x02
+#define DRM_TEGRA_DRM_SYNCPT_WAIT 0x03
+#define DRM_TEGRA_DRM_OPEN_CHANNEL 0x04
+#define DRM_TEGRA_DRM_CLOSE_CHANNEL 0x05
+#define DRM_TEGRA_DRM_GET_SYNCPOINT 0x06
+#define DRM_TEGRA_DRM_SUBMIT 0x08
+#define DRM_TEGRA_DRM_GEM_GET_OFFSET 0x09
+
+#define DRM_IOCTL_TEGRA_DRM_GEM_CREATE DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_DRM_GEM_CREATE, struct tegra_drm_create)
+#define DRM_IOCTL_TEGRA_DRM_SYNCPT_READ DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_DRM_SYNCPT_READ, struct tegra_drm_syncpt_read_args)
+#define DRM_IOCTL_TEGRA_DRM_SYNCPT_INCR DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_DRM_SYNCPT_INCR, struct tegra_drm_syncpt_incr_args)
+#define DRM_IOCTL_TEGRA_DRM_SYNCPT_WAIT DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_DRM_SYNCPT_WAIT, struct tegra_drm_syncpt_wait_args)
+#define DRM_IOCTL_TEGRA_DRM_OPEN_CHANNEL DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_DRM_OPEN_CHANNEL, struct tegra_drm_open_channel_args)
+#define DRM_IOCTL_TEGRA_DRM_CLOSE_CHANNEL DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_DRM_CLOSE_CHANNEL, struct tegra_drm_open_channel_args)
+#define DRM_IOCTL_TEGRA_DRM_GET_SYNCPOINT DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_DRM_GET_SYNCPOINT, struct tegra_drm_get_syncpoint)
+#define DRM_IOCTL_TEGRA_DRM_SUBMIT DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_DRM_SUBMIT, struct tegra_drm_submit_args)
+#define DRM_IOCTL_TEGRA_DRM_GEM_GET_OFFSET DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_DRM_GEM_GET_OFFSET, struct tegra_drm_get_offset)
+
+#endif
--
1.7.9.5
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