ccflags-y = -Idrivers/gpu/host1x
host1x-y = \
+ bus.o \
syncpt.o \
dev.o \
intr.o \
host1x-$(CONFIG_DRM_TEGRA) += drm/output.o drm/rgb.o drm/hdmi.o
host1x-$(CONFIG_DRM_TEGRA) += drm/gem.o
host1x-$(CONFIG_DRM_TEGRA) += drm/gr2d.o
+host1x-$(CONFIG_DRM_TEGRA) += drm/bus.o
obj-$(CONFIG_TEGRA_HOST1X) += host1x.o
--- /dev/null
+/*
+ * Copyright (C) 2012 Avionic Design GmbH
+ * 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/host1x.h>
+#include <linux/of.h>
+#include <linux/slab.h>
+
+#include "dev.h"
+
+static DEFINE_MUTEX(clients_lock);
+static LIST_HEAD(clients);
+
+static DEFINE_MUTEX(drivers_lock);
+static LIST_HEAD(drivers);
+
+static DEFINE_MUTEX(devices_lock);
+static LIST_HEAD(devices);
+
+struct host1x_subdev {
+ struct host1x_client *client;
+ struct device_node *np;
+ struct list_head list;
+};
+
+/**
+ * host1x_subdev_add() - add a new subdevice with an associated device node
+ */
+static int host1x_subdev_add(struct host1x_device *device,
+ struct device_node *np)
+{
+ struct host1x_subdev *subdev;
+
+ subdev = kzalloc(sizeof(*subdev), GFP_KERNEL);
+ if (!subdev)
+ return -ENOMEM;
+
+ INIT_LIST_HEAD(&subdev->list);
+ subdev->np = of_node_get(np);
+
+ mutex_lock(&device->subdevs_lock);
+ list_add_tail(&subdev->list, &device->subdevs);
+ mutex_unlock(&device->subdevs_lock);
+
+ return 0;
+}
+
+/**
+ * host1x_subdev_del() - remove subdevice
+ */
+static void host1x_subdev_del(struct host1x_subdev *subdev)
+{
+ list_del(&subdev->list);
+ of_node_put(subdev->np);
+ kfree(subdev);
+}
+
+/**
+ * host1x_device_parse_dt() - scan device tree and add matching subdevices
+ */
+static int host1x_device_parse_dt(struct host1x_device *device)
+{
+ struct device_node *np;
+ int err;
+
+ for_each_child_of_node(device->dev.parent->of_node, np) {
+ if (of_match_node(device->driver->subdevs, np) &&
+ of_device_is_available(np)) {
+ err = host1x_subdev_add(device, np);
+ if (err < 0)
+ return err;
+ }
+ }
+
+ return 0;
+}
+
+static void host1x_subdev_register(struct host1x_device *device,
+ struct host1x_subdev *subdev,
+ struct host1x_client *client)
+{
+ int err;
+
+ /*
+ * Move the subdevice to the list of active (registered) subdevices
+ * and associate it with a client. At the same time, associate the
+ * client with its parent device.
+ */
+ mutex_lock(&device->subdevs_lock);
+ mutex_lock(&device->clients_lock);
+ list_move_tail(&client->list, &device->clients);
+ list_move_tail(&subdev->list, &device->active);
+ client->parent = &device->dev;
+ subdev->client = client;
+ mutex_unlock(&device->clients_lock);
+ mutex_unlock(&device->subdevs_lock);
+
+ /*
+ * When all subdevices have been registered, the composite device is
+ * ready to be probed.
+ */
+ if (list_empty(&device->subdevs)) {
+ err = device->driver->probe(device);
+ if (err < 0)
+ dev_err(&device->dev, "probe failed: %d\n", err);
+ }
+}
+
+static void __host1x_subdev_unregister(struct host1x_device *device,
+ struct host1x_subdev *subdev)
+{
+ struct host1x_client *client = subdev->client;
+ int err;
+
+ /*
+ * If all subdevices have been activated, we're about to remove the
+ * first active subdevice, so unload the driver first.
+ */
+ if (list_empty(&device->subdevs)) {
+ err = device->driver->remove(device);
+ if (err < 0)
+ dev_err(&device->dev, "remove failed: %d\n", err);
+ }
+
+ /*
+ * Move the subdevice back to the list of idle subdevices and remove
+ * it from list of clients.
+ */
+ mutex_lock(&device->clients_lock);
+ subdev->client = NULL;
+ client->parent = NULL;
+ list_move_tail(&subdev->list, &device->subdevs);
+ /*
+ * XXX: Perhaps don't do this here, but rather explicitly remove it
+ * when the device is about to be deleted.
+ *
+ * This is somewhat complicated by the fact that this function is
+ * used to remove the subdevice when a client is unregistered but
+ * also when the composite device is about to be removed.
+ */
+ list_del_init(&client->list);
+ mutex_unlock(&device->clients_lock);
+}
+
+static void host1x_subdev_unregister(struct host1x_device *device,
+ struct host1x_subdev *subdev)
+{
+ mutex_lock(&device->subdevs_lock);
+ __host1x_subdev_unregister(device, subdev);
+ mutex_unlock(&device->subdevs_lock);
+}
+
+int host1x_device_init(struct host1x_device *device)
+{
+ struct host1x_client *client;
+ int err;
+
+ mutex_lock(&device->clients_lock);
+
+ list_for_each_entry(client, &device->clients, list) {
+ if (client->ops && client->ops->init) {
+ err = client->ops->init(client);
+ if (err < 0) {
+ dev_err(&device->dev,
+ "failed to initialize %s: %d\n",
+ dev_name(client->dev), err);
+ mutex_unlock(&device->clients_lock);
+ return err;
+ }
+ }
+ }
+
+ mutex_unlock(&device->clients_lock);
+
+ return 0;
+}
+
+int host1x_device_exit(struct host1x_device *device)
+{
+ struct host1x_client *client;
+ int err;
+
+ mutex_lock(&device->clients_lock);
+
+ list_for_each_entry_reverse(client, &device->clients, list) {
+ if (client->ops && client->ops->exit) {
+ err = client->ops->exit(client);
+ if (err < 0) {
+ dev_err(&device->dev,
+ "failed to cleanup %s: %d\n",
+ dev_name(client->dev), err);
+ mutex_unlock(&device->clients_lock);
+ return err;
+ }
+ }
+ }
+
+ mutex_unlock(&device->clients_lock);
+
+ return 0;
+}
+
+static int host1x_register_client(struct host1x *host1x,
+ struct host1x_client *client)
+{
+ struct host1x_device *device;
+ struct host1x_subdev *subdev;
+
+ mutex_lock(&host1x->devices_lock);
+
+ list_for_each_entry(device, &host1x->devices, list) {
+ list_for_each_entry(subdev, &device->subdevs, list) {
+ if (subdev->np == client->dev->of_node) {
+ host1x_subdev_register(device, subdev, client);
+ mutex_unlock(&host1x->devices_lock);
+ return 0;
+ }
+ }
+ }
+
+ mutex_unlock(&host1x->devices_lock);
+ return -ENODEV;
+}
+
+static int host1x_unregister_client(struct host1x *host1x,
+ struct host1x_client *client)
+{
+ struct host1x_device *device, *dt;
+ struct host1x_subdev *subdev;
+
+ mutex_lock(&host1x->devices_lock);
+
+ list_for_each_entry_safe(device, dt, &host1x->devices, list) {
+ list_for_each_entry(subdev, &device->active, list) {
+ if (subdev->client == client) {
+ host1x_subdev_unregister(device, subdev);
+ mutex_unlock(&host1x->devices_lock);
+ return 0;
+ }
+ }
+ }
+
+ mutex_unlock(&host1x->devices_lock);
+ return -ENODEV;
+}
+
+struct bus_type host1x_bus_type = {
+ .name = "host1x",
+};
+
+int host1x_bus_init(void)
+{
+ return bus_register(&host1x_bus_type);
+}
+
+void host1x_bus_exit(void)
+{
+ bus_unregister(&host1x_bus_type);
+}
+
+static void host1x_device_release(struct device *dev)
+{
+ struct host1x_device *device = to_host1x_device(dev);
+
+ kfree(device);
+}
+
+static int host1x_device_add(struct host1x *host1x,
+ struct host1x_driver *driver)
+{
+ struct host1x_client *client, *tmp;
+ struct host1x_subdev *subdev;
+ struct host1x_device *device;
+ int err;
+
+ device = kzalloc(sizeof(*device), GFP_KERNEL);
+ if (!device)
+ return -ENOMEM;
+
+ mutex_init(&device->subdevs_lock);
+ INIT_LIST_HEAD(&device->subdevs);
+ INIT_LIST_HEAD(&device->active);
+ mutex_init(&device->clients_lock);
+ INIT_LIST_HEAD(&device->clients);
+ INIT_LIST_HEAD(&device->list);
+ device->driver = driver;
+
+ device->dev.coherent_dma_mask = host1x->dev->coherent_dma_mask;
+ device->dev.dma_mask = &device->dev.coherent_dma_mask;
+ device->dev.release = host1x_device_release;
+ dev_set_name(&device->dev, driver->name);
+ device->dev.bus = &host1x_bus_type;
+ device->dev.parent = host1x->dev;
+
+ err = device_register(&device->dev);
+ if (err < 0)
+ return err;
+
+ err = host1x_device_parse_dt(device);
+ if (err < 0) {
+ device_unregister(&device->dev);
+ return err;
+ }
+
+ mutex_lock(&host1x->devices_lock);
+ list_add_tail(&device->list, &host1x->devices);
+ mutex_unlock(&host1x->devices_lock);
+
+ mutex_lock(&clients_lock);
+
+ list_for_each_entry_safe(client, tmp, &clients, list) {
+ list_for_each_entry(subdev, &device->subdevs, list) {
+ if (subdev->np == client->dev->of_node) {
+ host1x_subdev_register(device, subdev, client);
+ break;
+ }
+ }
+ }
+
+ mutex_unlock(&clients_lock);
+
+ return 0;
+}
+
+/*
+ * Removes a device by first unregistering any subdevices and then removing
+ * itself from the list of devices.
+ *
+ * This function must be called with the host1x->devices_lock held.
+ */
+static void host1x_device_del(struct host1x *host1x,
+ struct host1x_device *device)
+{
+ struct host1x_subdev *subdev, *sd;
+ struct host1x_client *client, *cl;
+
+ mutex_lock(&device->subdevs_lock);
+
+ /* unregister subdevices */
+ list_for_each_entry_safe(subdev, sd, &device->active, list) {
+ /*
+ * host1x_subdev_unregister() will remove the client from
+ * any lists, so we'll need to manually add it back to the
+ * list of idle clients.
+ *
+ * XXX: Alternatively, perhaps don't remove the client from
+ * any lists in host1x_subdev_unregister() and instead do
+ * that explicitly from host1x_unregister_client()?
+ */
+ client = subdev->client;
+
+ __host1x_subdev_unregister(device, subdev);
+
+ /* add the client to the list of idle clients */
+ mutex_lock(&clients_lock);
+ list_add_tail(&client->list, &clients);
+ mutex_unlock(&clients_lock);
+ }
+
+ /* remove subdevices */
+ list_for_each_entry_safe(subdev, sd, &device->subdevs, list)
+ host1x_subdev_del(subdev);
+
+ mutex_unlock(&device->subdevs_lock);
+
+ /* move clients to idle list */
+ mutex_lock(&clients_lock);
+ mutex_lock(&device->clients_lock);
+
+ list_for_each_entry_safe(client, cl, &device->clients, list)
+ list_move_tail(&client->list, &clients);
+
+ mutex_unlock(&device->clients_lock);
+ mutex_unlock(&clients_lock);
+
+ /* finally remove the device */
+ list_del_init(&device->list);
+ device_unregister(&device->dev);
+}
+
+static void host1x_attach_driver(struct host1x *host1x,
+ struct host1x_driver *driver)
+{
+ struct host1x_device *device;
+ int err;
+
+ mutex_lock(&host1x->devices_lock);
+
+ list_for_each_entry(device, &host1x->devices, list) {
+ if (device->driver == driver) {
+ mutex_unlock(&host1x->devices_lock);
+ return;
+ }
+ }
+
+ mutex_unlock(&host1x->devices_lock);
+
+ err = host1x_device_add(host1x, driver);
+ if (err < 0)
+ dev_err(host1x->dev, "failed to allocate device: %d\n", err);
+}
+
+static void host1x_detach_driver(struct host1x *host1x,
+ struct host1x_driver *driver)
+{
+ struct host1x_device *device, *tmp;
+
+ mutex_lock(&host1x->devices_lock);
+
+ list_for_each_entry_safe(device, tmp, &host1x->devices, list)
+ if (device->driver == driver)
+ host1x_device_del(host1x, device);
+
+ mutex_unlock(&host1x->devices_lock);
+}
+
+int host1x_register(struct host1x *host1x)
+{
+ struct host1x_driver *driver;
+
+ mutex_lock(&devices_lock);
+ list_add_tail(&host1x->list, &devices);
+ mutex_unlock(&devices_lock);
+
+ mutex_lock(&drivers_lock);
+
+ list_for_each_entry(driver, &drivers, list)
+ host1x_attach_driver(host1x, driver);
+
+ mutex_unlock(&drivers_lock);
+
+ return 0;
+}
+
+int host1x_unregister(struct host1x *host1x)
+{
+ struct host1x_driver *driver;
+
+ mutex_lock(&drivers_lock);
+
+ list_for_each_entry(driver, &drivers, list)
+ host1x_detach_driver(host1x, driver);
+
+ mutex_unlock(&drivers_lock);
+
+ mutex_lock(&devices_lock);
+ list_del_init(&host1x->list);
+ mutex_unlock(&devices_lock);
+
+ return 0;
+}
+
+int host1x_driver_register(struct host1x_driver *driver)
+{
+ struct host1x *host1x;
+
+ INIT_LIST_HEAD(&driver->list);
+
+ mutex_lock(&drivers_lock);
+ list_add_tail(&driver->list, &drivers);
+ mutex_unlock(&drivers_lock);
+
+ mutex_lock(&devices_lock);
+
+ list_for_each_entry(host1x, &devices, list)
+ host1x_attach_driver(host1x, driver);
+
+ mutex_unlock(&devices_lock);
+
+ return 0;
+}
+EXPORT_SYMBOL(host1x_driver_register);
+
+void host1x_driver_unregister(struct host1x_driver *driver)
+{
+ mutex_lock(&drivers_lock);
+ list_del_init(&driver->list);
+ mutex_unlock(&drivers_lock);
+}
+EXPORT_SYMBOL(host1x_driver_unregister);
+
+int host1x_client_register(struct host1x_client *client)
+{
+ struct host1x *host1x;
+ int err;
+
+ mutex_lock(&devices_lock);
+
+ list_for_each_entry(host1x, &devices, list) {
+ err = host1x_register_client(host1x, client);
+ if (!err) {
+ mutex_unlock(&devices_lock);
+ return 0;
+ }
+ }
+
+ mutex_unlock(&devices_lock);
+
+ mutex_lock(&clients_lock);
+ list_add_tail(&client->list, &clients);
+ mutex_unlock(&clients_lock);
+
+ return 0;
+}
+EXPORT_SYMBOL(host1x_client_register);
+
+int host1x_client_unregister(struct host1x_client *client)
+{
+ struct host1x_client *c;
+ struct host1x *host1x;
+ int err;
+
+ mutex_lock(&devices_lock);
+
+ list_for_each_entry(host1x, &devices, list) {
+ err = host1x_unregister_client(host1x, client);
+ if (!err) {
+ mutex_unlock(&devices_lock);
+ return 0;
+ }
+ }
+
+ mutex_unlock(&devices_lock);
+ mutex_lock(&clients_lock);
+
+ list_for_each_entry(c, &clients, list) {
+ if (c == client) {
+ list_del_init(&c->list);
+ break;
+ }
+ }
+
+ mutex_unlock(&clients_lock);
+
+ return 0;
+}
+EXPORT_SYMBOL(host1x_client_unregister);
/*
- * Copyright (c) 2013, NVIDIA Corporation.
+ * Copyright (C) 2012 Avionic Design GmbH
+ * 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,
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#ifndef HOST1X_CLIENT_H
-#define HOST1X_CLIENT_H
+#ifndef HOST1X_BUS_H
+#define HOST1X_BUS_H
-struct device;
-struct platform_device;
+struct host1x;
-#ifdef CONFIG_DRM_TEGRA
-int tegra_drm_alloc(struct platform_device *pdev);
-#else
-static inline int tegra_drm_alloc(struct platform_device *pdev)
-{
- return 0;
-}
-#endif
+int host1x_bus_init(void);
+void host1x_bus_exit(void);
-void host1x_set_drm_data(struct device *dev, void *data);
-void *host1x_get_drm_data(struct device *dev);
+int host1x_register(struct host1x *host1x);
+int host1x_unregister(struct host1x *host1x);
#endif
#define CREATE_TRACE_POINTS
#include <trace/events/host1x.h>
+#include "bus.h"
#include "dev.h"
#include "intr.h"
#include "channel.h"
#include "debug.h"
#include "hw/host1x01.h"
-#include "host1x_client.h"
-
-void host1x_set_drm_data(struct device *dev, void *data)
-{
- struct host1x *host1x = dev_get_drvdata(dev);
- host1x->drm_data = data;
-}
-
-void *host1x_get_drm_data(struct device *dev)
-{
- struct host1x *host1x = dev_get_drvdata(dev);
- return host1x ? host1x->drm_data : NULL;
-}
void host1x_sync_writel(struct host1x *host1x, u32 v, u32 r)
{
if (!host)
return -ENOMEM;
+ mutex_init(&host->devices_lock);
+ INIT_LIST_HEAD(&host->devices);
+ INIT_LIST_HEAD(&host->list);
host->dev = &pdev->dev;
host->info = id->data;
host1x_debug_init(host);
- tegra_drm_alloc(pdev);
+ err = host1x_register(host);
+ if (err < 0)
+ goto fail_deinit_intr;
return 0;
+fail_deinit_intr:
+ host1x_intr_deinit(host);
fail_deinit_syncpt:
host1x_syncpt_deinit(host);
return err;
{
struct host1x *host = platform_get_drvdata(pdev);
+ host1x_unregister(host);
host1x_intr_deinit(host);
host1x_syncpt_deinit(host);
clk_disable_unprepare(host->clk);
{
int err;
- err = platform_driver_register(&tegra_host1x_driver);
+ err = host1x_bus_init();
if (err < 0)
return err;
-#ifdef CONFIG_DRM_TEGRA
- err = platform_driver_register(&tegra_dc_driver);
- if (err < 0)
- goto unregister_host1x;
-
- 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
+ err = platform_driver_register(&tegra_host1x_driver);
+ if (err < 0) {
+ host1x_bus_exit();
+ return err;
+ }
return 0;
-
-#ifdef CONFIG_DRM_TEGRA
-unregister_hdmi:
- platform_driver_unregister(&tegra_hdmi_driver);
-unregister_dc:
- platform_driver_unregister(&tegra_dc_driver);
-unregister_host1x:
- platform_driver_unregister(&tegra_host1x_driver);
- return err;
-#endif
}
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
platform_driver_unregister(&tegra_host1x_driver);
+ host1x_bus_exit();
}
module_exit(tegra_host1x_exit);
struct dentry *debugfs;
- void *drm_data;
+ struct mutex devices_lock;
+ struct list_head devices;
+
+ struct list_head list;
};
void host1x_sync_writel(struct host1x *host1x, u32 r, u32 v);
host->debug_op->show_mlocks(host, o);
}
-extern struct platform_driver tegra_dc_driver;
-extern struct platform_driver tegra_hdmi_driver;
-extern struct platform_driver tegra_gr2d_driver;
-
#endif
--- /dev/null
+/*
+ * Copyright (C) 2013 NVIDIA Corporation
+ *
+ * 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
+ * published by the Free Software Foundation.
+ */
+
+#include "drm.h"
+
+static int drm_host1x_set_busid(struct drm_device *dev,
+ struct drm_master *master)
+{
+ const char *device = dev_name(dev->dev);
+ const char *driver = dev->driver->name;
+ const char *bus = dev->dev->bus->name;
+ int length;
+
+ master->unique_len = strlen(bus) + 1 + strlen(device);
+ master->unique_size = master->unique_len;
+
+ master->unique = kmalloc(master->unique_len + 1, GFP_KERNEL);
+ if (!master->unique)
+ return -ENOMEM;
+
+ snprintf(master->unique, master->unique_len + 1, "%s:%s", bus, device);
+
+ length = strlen(driver) + 1 + master->unique_len;
+
+ dev->devname = kmalloc(length + 1, GFP_KERNEL);
+ if (!dev->devname)
+ return -ENOMEM;
+
+ snprintf(dev->devname, length + 1, "%s@%s", driver, master->unique);
+
+ return 0;
+}
+
+static struct drm_bus drm_host1x_bus = {
+ .bus_type = DRIVER_BUS_HOST1X,
+ .set_busid = drm_host1x_set_busid,
+};
+
+int drm_host1x_init(struct drm_driver *driver, struct host1x_device *device)
+{
+ struct drm_device *drm;
+ int ret;
+
+ INIT_LIST_HEAD(&driver->device_list);
+ driver->bus = &drm_host1x_bus;
+
+ drm = drm_dev_alloc(driver, &device->dev);
+ if (!drm)
+ return -ENOMEM;
+
+ ret = drm_dev_register(drm, 0);
+ if (ret)
+ goto err_free;
+
+ DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n", driver->name,
+ driver->major, driver->minor, driver->patchlevel,
+ driver->date, drm->primary->index);
+
+ return 0;
+
+err_free:
+ drm_dev_free(drm);
+ return ret;
+}
+
+void drm_host1x_exit(struct drm_driver *driver, struct host1x_device *device)
+{
+ struct tegra_drm *tegra = dev_get_drvdata(&device->dev);
+
+ drm_put_dev(tegra->drm);
+}
#include <linux/clk/tegra.h>
#include <linux/debugfs.h>
-#include "host1x_client.h"
#include "dc.h"
#include "drm.h"
#include "gem.h"
static int tegra_dc_init(struct host1x_client *client)
{
- struct tegra_drm_client *drm = to_tegra_drm_client(client);
- struct tegra_dc *dc = tegra_drm_client_to_dc(drm);
+ struct tegra_drm *tegra = dev_get_drvdata(client->parent);
+ struct tegra_dc *dc = host1x_client_to_dc(client);
int err;
- dc->pipe = drm->drm->mode_config.num_crtc;
+ dc->pipe = tegra->drm->mode_config.num_crtc;
- drm_crtc_init(drm->drm, &dc->base, &tegra_crtc_funcs);
+ drm_crtc_init(tegra->drm, &dc->base, &tegra_crtc_funcs);
drm_mode_crtc_set_gamma_size(&dc->base, 256);
drm_crtc_helper_add(&dc->base, &tegra_crtc_helper_funcs);
- err = tegra_dc_rgb_init(drm->drm, dc);
+ err = tegra_dc_rgb_init(tegra->drm, dc);
if (err < 0 && err != -ENODEV) {
dev_err(dc->dev, "failed to initialize RGB output: %d\n", err);
return err;
}
- err = tegra_dc_add_planes(drm->drm, dc);
+ err = tegra_dc_add_planes(tegra->drm, dc);
if (err < 0)
return err;
if (IS_ENABLED(CONFIG_DEBUG_FS)) {
- err = tegra_dc_debugfs_init(dc, drm->drm->primary);
+ err = tegra_dc_debugfs_init(dc, tegra->drm->primary);
if (err < 0)
dev_err(dc->dev, "debugfs setup failed: %d\n", err);
}
static int tegra_dc_exit(struct host1x_client *client)
{
- struct tegra_drm_client *drm = to_tegra_drm_client(client);
- struct tegra_dc *dc = tegra_drm_client_to_dc(drm);
+ struct tegra_dc *dc = host1x_client_to_dc(client);
int err;
devm_free_irq(dc->dev, dc->irq, dc);
static int tegra_dc_probe(struct platform_device *pdev)
{
- struct tegra_drm *tegra = host1x_get_drm_data(pdev->dev.parent);
struct resource *regs;
struct tegra_dc *dc;
int err;
return -ENXIO;
}
- INIT_LIST_HEAD(&dc->client.base.list);
- dc->client.base.ops = &dc_client_ops;
- dc->client.base.dev = &pdev->dev;
+ INIT_LIST_HEAD(&dc->client.list);
+ dc->client.ops = &dc_client_ops;
+ dc->client.dev = &pdev->dev;
err = tegra_dc_rgb_probe(dc);
if (err < 0 && err != -ENODEV) {
return err;
}
- err = host1x_register_client(tegra, &dc->client.base);
+ err = host1x_client_register(&dc->client);
if (err < 0) {
dev_err(&pdev->dev, "failed to register host1x client: %d\n",
err);
static int tegra_dc_remove(struct platform_device *pdev)
{
- struct tegra_drm *tegra = host1x_get_drm_data(pdev->dev.parent);
struct tegra_dc *dc = platform_get_drvdata(pdev);
int err;
- err = host1x_unregister_client(tegra, &dc->client.base);
+ err = host1x_client_unregister(&dc->client);
if (err < 0) {
dev_err(&pdev->dev, "failed to unregister host1x client: %d\n",
err);
* published by the Free Software Foundation.
*/
-#include "host1x_client.h"
+#include <linux/host1x.h>
+
#include "drm.h"
#include "gem.h"
struct list_head contexts;
};
-struct host1x_subdev {
- struct host1x_client *client;
- struct device_node *np;
- struct list_head list;
-};
-
-static int host1x_subdev_add(struct tegra_drm *tegra, struct device_node *np)
-{
- struct host1x_subdev *subdev;
-
- subdev = kzalloc(sizeof(*subdev), GFP_KERNEL);
- if (!subdev)
- return -ENOMEM;
-
- INIT_LIST_HEAD(&subdev->list);
- subdev->np = of_node_get(np);
-
- list_add_tail(&subdev->list, &tegra->subdevs);
-
- return 0;
-}
-
-static int host1x_subdev_register(struct tegra_drm *tegra,
- struct host1x_subdev *subdev,
- struct host1x_client *client)
-{
- mutex_lock(&tegra->subdevs_lock);
- list_del_init(&subdev->list);
- list_add_tail(&subdev->list, &tegra->active);
- subdev->client = client;
- mutex_unlock(&tegra->subdevs_lock);
-
- return 0;
-}
-
-static int host1x_subdev_unregister(struct tegra_drm *tegra,
- struct host1x_subdev *subdev)
-{
- mutex_lock(&tegra->subdevs_lock);
- list_del_init(&subdev->list);
- mutex_unlock(&tegra->subdevs_lock);
-
- of_node_put(subdev->np);
- kfree(subdev);
-
- return 0;
-}
-
-static int tegra_parse_dt(struct tegra_drm *tegra)
-{
- 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;
-
- for (i = 0; i < ARRAY_SIZE(compat); i++) {
- struct device_node *np;
-
- for_each_child_of_node(tegra->dev->of_node, np) {
- if (of_device_is_compatible(np, compat[i]) &&
- of_device_is_available(np)) {
- err = host1x_subdev_add(tegra, np);
- if (err < 0)
- return err;
- }
- }
- }
-
- return 0;
-}
-
-int tegra_drm_alloc(struct platform_device *pdev)
+static int tegra_drm_load(struct drm_device *drm, unsigned long flags)
{
+ struct host1x_device *device = to_host1x_device(drm->dev);
struct tegra_drm *tegra;
int err;
- tegra = devm_kzalloc(&pdev->dev, sizeof(*tegra), GFP_KERNEL);
+ tegra = kzalloc(sizeof(*tegra), GFP_KERNEL);
if (!tegra)
return -ENOMEM;
- mutex_init(&tegra->subdevs_lock);
- INIT_LIST_HEAD(&tegra->subdevs);
- INIT_LIST_HEAD(&tegra->active);
+ dev_set_drvdata(drm->dev, tegra);
mutex_init(&tegra->clients_lock);
INIT_LIST_HEAD(&tegra->clients);
- tegra->dev = &pdev->dev;
-
- err = tegra_parse_dt(tegra);
- if (err < 0) {
- dev_err(&pdev->dev, "failed to parse DT: %d\n", err);
- return err;
- }
-
- host1x_set_drm_data(&pdev->dev, tegra);
-
- return 0;
-}
-
-int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm)
-{
- struct host1x_client *client;
- int err;
-
- mutex_lock(&tegra->clients_lock);
-
- list_for_each_entry(client, &tegra->clients, list) {
- struct tegra_drm_client *tdc = to_tegra_drm_client(client);
-
- /* associate client with DRM device */
- tdc->drm = drm;
-
- if (client->ops && client->ops->init) {
- err = client->ops->init(client);
- if (err < 0) {
- dev_err(tegra->dev,
- "DRM setup failed for %s: %d\n",
- dev_name(client->dev), err);
- mutex_unlock(&tegra->clients_lock);
- return err;
- }
- }
- }
-
- mutex_unlock(&tegra->clients_lock);
-
- return 0;
-}
-
-int tegra_drm_exit(struct tegra_drm *tegra)
-{
- struct host1x_client *client;
- struct platform_device *pdev;
- int err;
-
- if (!tegra->drm)
- return 0;
-
- mutex_lock(&tegra->clients_lock);
-
- list_for_each_entry_reverse(client, &tegra->clients, list) {
- if (client->ops && client->ops->exit) {
- err = client->ops->exit(client);
- if (err < 0) {
- dev_err(tegra->dev,
- "DRM cleanup failed for %s: %d\n",
- dev_name(client->dev), err);
- mutex_unlock(&tegra->clients_lock);
- return err;
- }
- }
- }
-
- mutex_unlock(&tegra->clients_lock);
-
- pdev = to_platform_device(tegra->dev);
- drm_platform_exit(&tegra_drm_driver, pdev);
- tegra->drm = NULL;
-
- return 0;
-}
-
-int host1x_register_client(struct tegra_drm *tegra,
- struct host1x_client *client)
-{
- struct host1x_subdev *subdev, *tmp;
- int err;
-
- mutex_lock(&tegra->clients_lock);
- list_add_tail(&client->list, &tegra->clients);
- mutex_unlock(&tegra->clients_lock);
-
- list_for_each_entry_safe(subdev, tmp, &tegra->subdevs, list)
- if (subdev->np == client->dev->of_node)
- host1x_subdev_register(tegra, subdev, client);
-
- if (list_empty(&tegra->subdevs)) {
- struct platform_device *pdev = to_platform_device(tegra->dev);
-
- err = drm_platform_init(&tegra_drm_driver, pdev);
- if (err < 0) {
- dev_err(tegra->dev, "drm_platform_init(): %d\n", err);
- return err;
- }
- }
-
- return 0;
-}
-
-int host1x_unregister_client(struct tegra_drm *tegra,
- struct host1x_client *client)
-{
- struct host1x_subdev *subdev, *tmp;
- int err;
-
- list_for_each_entry_safe(subdev, tmp, &tegra->active, list) {
- if (subdev->client == client) {
- err = tegra_drm_exit(tegra);
- if (err < 0) {
- dev_err(tegra->dev, "tegra_drm_exit(): %d\n",
- err);
- return err;
- }
-
- host1x_subdev_unregister(tegra, subdev);
- break;
- }
- }
-
- mutex_lock(&tegra->clients_lock);
- list_del_init(&client->list);
- mutex_unlock(&tegra->clients_lock);
-
- return 0;
-}
-
-static int tegra_drm_load(struct drm_device *drm, unsigned long flags)
-{
- struct tegra_drm *tegra;
- int err;
-
- tegra = host1x_get_drm_data(drm->dev);
drm->dev_private = tegra;
tegra->drm = drm;
drm_mode_config_init(drm);
- err = tegra_drm_init(tegra, drm);
+ err = host1x_device_init(device);
if (err < 0)
return err;
static int tegra_drm_unload(struct drm_device *drm)
{
+ struct host1x_device *device = to_host1x_device(drm->dev);
+ int err;
+
drm_kms_helper_poll_fini(drm);
tegra_drm_fb_exit(drm);
+ err = host1x_device_exit(device);
+ if (err < 0)
+ return err;
+
drm_mode_config_cleanup(drm);
return 0;
static int tegra_syncpt_read(struct drm_device *drm, void *data,
struct drm_file *file)
{
+ struct host1x *host = dev_get_drvdata(drm->dev->parent);
struct drm_tegra_syncpt_read *args = data;
- struct host1x *host = dev_get_drvdata(drm->dev);
- struct host1x_syncpt *sp = host1x_syncpt_get(host, args->id);
+ struct host1x_syncpt *sp;
+ sp = host1x_syncpt_get(host, args->id);
if (!sp)
return -EINVAL;
static int tegra_syncpt_incr(struct drm_device *drm, void *data,
struct drm_file *file)
{
+ struct host1x *host1x = dev_get_drvdata(drm->dev->parent);
struct drm_tegra_syncpt_incr *args = data;
- struct host1x *host = dev_get_drvdata(drm->dev);
- struct host1x_syncpt *sp = host1x_syncpt_get(host, args->id);
+ struct host1x_syncpt *sp;
+ sp = host1x_syncpt_get(host1x, args->id);
if (!sp)
return -EINVAL;
static int tegra_syncpt_wait(struct drm_device *drm, void *data,
struct drm_file *file)
{
+ struct host1x *host1x = dev_get_drvdata(drm->dev->parent);
struct drm_tegra_syncpt_wait *args = data;
- struct host1x *host = dev_get_drvdata(drm->dev);
- struct host1x_syncpt *sp = host1x_syncpt_get(host, args->id);
+ struct host1x_syncpt *sp;
+ sp = host1x_syncpt_get(host1x, args->id);
if (!sp)
return -EINVAL;
if (!context)
return -ENOMEM;
- list_for_each_entry(client, &tegra->clients, base.list)
+ list_for_each_entry(client, &tegra->clients, list)
if (client->base.class == args->client) {
err = client->ops->open_channel(client, context);
if (err)
static int tegra_close_channel(struct drm_device *drm, void *data,
struct drm_file *file)
{
- struct drm_tegra_close_channel *args = data;
struct tegra_drm_file *fpriv = file->driver_priv;
+ struct drm_tegra_close_channel *args = data;
struct tegra_drm_context *context;
context = tegra_drm_get_context(args->context);
.minor = DRIVER_MINOR,
.patchlevel = DRIVER_PATCHLEVEL,
};
+
+int tegra_drm_register_client(struct tegra_drm *tegra,
+ struct tegra_drm_client *client)
+{
+ mutex_lock(&tegra->clients_lock);
+ list_add_tail(&client->list, &tegra->clients);
+ mutex_unlock(&tegra->clients_lock);
+
+ return 0;
+}
+
+int tegra_drm_unregister_client(struct tegra_drm *tegra,
+ struct tegra_drm_client *client)
+{
+ mutex_lock(&tegra->clients_lock);
+ list_del_init(&client->list);
+ mutex_unlock(&tegra->clients_lock);
+
+ return 0;
+}
+
+static int host1x_drm_probe(struct host1x_device *device)
+{
+ return drm_host1x_init(&tegra_drm_driver, device);
+}
+
+static int host1x_drm_remove(struct host1x_device *device)
+{
+ drm_host1x_exit(&tegra_drm_driver, device);
+
+ return 0;
+}
+
+static const struct of_device_id host1x_drm_subdevs[] = {
+ { .compatible = "nvidia,tegra20-dc", },
+ { .compatible = "nvidia,tegra20-hdmi", },
+ { .compatible = "nvidia,tegra20-gr2d", },
+ { .compatible = "nvidia,tegra30-dc", },
+ { .compatible = "nvidia,tegra30-hdmi", },
+ { .compatible = "nvidia,tegra30-gr2d", },
+ { /* sentinel */ }
+};
+
+static struct host1x_driver host1x_drm_driver = {
+ .name = "drm",
+ .probe = host1x_drm_probe,
+ .remove = host1x_drm_remove,
+ .subdevs = host1x_drm_subdevs,
+};
+
+static int __init host1x_drm_init(void)
+{
+ int err;
+
+ err = host1x_driver_register(&host1x_drm_driver);
+ if (err < 0)
+ return err;
+
+ err = platform_driver_register(&tegra_dc_driver);
+ if (err < 0)
+ goto unregister_host1x;
+
+ 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;
+
+ return 0;
+
+unregister_hdmi:
+ platform_driver_unregister(&tegra_hdmi_driver);
+unregister_dc:
+ platform_driver_unregister(&tegra_dc_driver);
+unregister_host1x:
+ host1x_driver_unregister(&host1x_drm_driver);
+ return err;
+}
+module_init(host1x_drm_init);
+
+static void __exit host1x_drm_exit(void)
+{
+ platform_driver_unregister(&tegra_gr2d_driver);
+ platform_driver_unregister(&tegra_hdmi_driver);
+ platform_driver_unregister(&tegra_dc_driver);
+ host1x_driver_unregister(&host1x_drm_driver);
+}
+module_exit(host1x_drm_exit);
+
+MODULE_AUTHOR("Thierry Reding <thierry.reding@avionic-design.de>");
+MODULE_DESCRIPTION("NVIDIA Tegra DRM driver");
+MODULE_LICENSE("GPL v2");
struct tegra_drm {
struct drm_device *drm;
- struct device *dev;
-
- struct mutex subdevs_lock;
- struct list_head subdevs;
- struct list_head active;
struct mutex clients_lock;
struct list_head clients;
struct tegra_drm_client {
struct host1x_client base;
- struct drm_device *drm;
+ struct list_head list;
const struct tegra_drm_client_ops *ops;
};
static inline struct tegra_drm_client *
-to_tegra_drm_client(struct host1x_client *client)
+host1x_to_drm_client(struct host1x_client *client)
{
return container_of(client, struct tegra_drm_client, base);
}
+extern int tegra_drm_register_client(struct tegra_drm *tegra,
+ struct tegra_drm_client *client);
+extern int tegra_drm_unregister_client(struct tegra_drm *tegra,
+ struct tegra_drm_client *client);
+
extern int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm);
extern int tegra_drm_exit(struct tegra_drm *tegra);
-extern int host1x_register_client(struct tegra_drm *tegra,
- struct host1x_client *client);
-extern int host1x_unregister_client(struct tegra_drm *tegra,
- struct host1x_client *client);
-
struct tegra_output;
struct tegra_dc {
- struct tegra_drm_client client;
+ struct host1x_client client;
struct device *dev;
spinlock_t lock;
};
static inline struct tegra_dc *
-tegra_drm_client_to_dc(struct tegra_drm_client *client)
+host1x_client_to_dc(struct host1x_client *client)
{
return container_of(client, struct tegra_dc, client);
}
return output ? -ENOSYS : -EINVAL;
}
+/* from bus.c */
+int drm_host1x_init(struct drm_driver *driver, struct host1x_device *device);
+void drm_host1x_exit(struct drm_driver *driver, struct host1x_device *device);
+
/* from rgb.c */
extern int tegra_dc_rgb_probe(struct tegra_dc *dc);
extern int tegra_dc_rgb_init(struct drm_device *drm, struct tegra_dc *dc);
extern void tegra_drm_fb_exit(struct drm_device *drm);
extern void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev);
-extern struct drm_driver tegra_drm_driver;
+extern struct platform_driver tegra_dc_driver;
+extern struct platform_driver tegra_hdmi_driver;
+extern struct platform_driver tegra_gr2d_driver;
#endif /* HOST1X_DRM_H */
#include <linux/clk.h>
-#include "host1x_client.h"
#include "drm.h"
#include "gem.h"
return container_of(client, struct gr2d, client);
}
-static int gr2d_client_init(struct host1x_client *client)
+static int gr2d_init(struct host1x_client *client)
{
- return 0;
+ 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_client_exit(struct host1x_client *client)
+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_client_init,
- .exit = gr2d_client_exit,
+ .init = gr2d_init,
+ .exit = gr2d_exit,
};
static int gr2d_open_channel(struct tegra_drm_client *client,
static int gr2d_probe(struct platform_device *pdev)
{
- struct tegra_drm *tegra = host1x_get_drm_data(pdev->dev.parent);
struct device *dev = &pdev->dev;
struct host1x_syncpt **syncpts;
struct gr2d *gr2d;
return err;
}
- gr2d->channel = host1x_channel_request(dev);
- if (!gr2d->channel)
- return -ENOMEM;
-
- *syncpts = host1x_syncpt_request(dev, false);
- if (!(*syncpts)) {
- host1x_channel_free(gr2d->channel);
- return -ENOMEM;
- }
-
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_register_client(tegra, &gr2d->client.base);
+ err = host1x_client_register(&gr2d->client.base);
if (err < 0) {
dev_err(dev, "failed to register host1x client: %d\n", err);
return err;
static int gr2d_remove(struct platform_device *pdev)
{
- struct tegra_drm *tegra = host1x_get_drm_data(pdev->dev.parent);
struct gr2d *gr2d = platform_get_drvdata(pdev);
- unsigned int i;
int err;
- err = host1x_unregister_client(tegra, &gr2d->client.base);
+ err = host1x_client_unregister(&gr2d->client.base);
if (err < 0) {
dev_err(&pdev->dev, "failed to unregister host1x client: %d\n",
err);
return err;
}
- for (i = 0; i < gr2d->client.base.num_syncpts; i++)
- host1x_syncpt_free(gr2d->client.base.syncpts[i]);
-
- host1x_channel_free(gr2d->channel);
clk_disable_unprepare(gr2d->clk);
return 0;
#include <linux/hdmi.h>
#include <linux/regulator/consumer.h>
-#include "host1x_client.h"
#include "hdmi.h"
#include "drm.h"
#include "dc.h"
struct tegra_hdmi {
- struct tegra_drm_client client;
+ struct host1x_client client;
struct tegra_output output;
struct device *dev;
};
static inline struct tegra_hdmi *
-tegra_drm_client_to_hdmi(struct tegra_drm_client *client)
+host1x_client_to_hdmi(struct host1x_client *client)
{
return container_of(client, struct tegra_hdmi, client);
}
static int tegra_hdmi_init(struct host1x_client *client)
{
- struct tegra_drm_client *drm = to_tegra_drm_client(client);
- struct tegra_hdmi *hdmi = tegra_drm_client_to_hdmi(drm);
+ struct tegra_drm *tegra = dev_get_drvdata(client->parent);
+ struct tegra_hdmi *hdmi = host1x_client_to_hdmi(client);
int err;
hdmi->output.type = TEGRA_OUTPUT_HDMI;
hdmi->output.dev = client->dev;
hdmi->output.ops = &hdmi_ops;
- err = tegra_output_init(drm->drm, &hdmi->output);
+ err = tegra_output_init(tegra->drm, &hdmi->output);
if (err < 0) {
dev_err(client->dev, "output setup failed: %d\n", err);
return err;
}
if (IS_ENABLED(CONFIG_DEBUG_FS)) {
- err = tegra_hdmi_debugfs_init(hdmi, drm->drm->primary);
+ err = tegra_hdmi_debugfs_init(hdmi, tegra->drm->primary);
if (err < 0)
dev_err(client->dev, "debugfs setup failed: %d\n", err);
}
static int tegra_hdmi_exit(struct host1x_client *client)
{
- struct tegra_drm_client *drm = to_tegra_drm_client(client);
- struct tegra_hdmi *hdmi = tegra_drm_client_to_hdmi(drm);
+ struct tegra_hdmi *hdmi = host1x_client_to_hdmi(client);
int err;
if (IS_ENABLED(CONFIG_DEBUG_FS)) {
static int tegra_hdmi_probe(struct platform_device *pdev)
{
- struct tegra_drm *tegra = host1x_get_drm_data(pdev->dev.parent);
struct tegra_hdmi *hdmi;
struct resource *regs;
int err;
hdmi->irq = err;
- INIT_LIST_HEAD(&hdmi->client.base.list);
- hdmi->client.base.ops = &hdmi_client_ops;
- hdmi->client.base.dev = &pdev->dev;
+ INIT_LIST_HEAD(&hdmi->client.list);
+ hdmi->client.ops = &hdmi_client_ops;
+ hdmi->client.dev = &pdev->dev;
- err = host1x_register_client(tegra, &hdmi->client.base);
+ err = host1x_client_register(&hdmi->client);
if (err < 0) {
dev_err(&pdev->dev, "failed to register host1x client: %d\n",
err);
static int tegra_hdmi_remove(struct platform_device *pdev)
{
- struct tegra_drm *tegra = host1x_get_drm_data(pdev->dev.parent);
struct tegra_hdmi *hdmi = platform_get_drvdata(pdev);
int err;
- err = host1x_unregister_client(tegra, &hdmi->client.base);
+ err = host1x_client_unregister(&hdmi->client);
if (err < 0) {
dev_err(&pdev->dev, "failed to unregister host1x client: %d\n",
err);
#define DRIVER_BUS_PCI 0x1
#define DRIVER_BUS_PLATFORM 0x2
#define DRIVER_BUS_USB 0x3
+#define DRIVER_BUS_HOST1X 0x4
/***********************************************************************/
/** \name Begin the DRM... */
#ifndef __LINUX_HOST1X_H
#define __LINUX_HOST1X_H
-#include <linux/kref.h>
+#include <linux/device.h>
#include <linux/types.h>
enum host1x_class {
struct host1x_client {
struct list_head list;
+ struct device *parent;
struct device *dev;
const struct host1x_client_ops *ops;
int host1x_job_pin(struct host1x_job *job, struct device *dev);
void host1x_job_unpin(struct host1x_job *job);
+/*
+ * subdevice probe infrastructure
+ */
+
+struct host1x_device;
+
+struct host1x_driver {
+ const struct of_device_id *subdevs;
+ struct list_head list;
+ const char *name;
+
+ int (*probe)(struct host1x_device *device);
+ int (*remove)(struct host1x_device *device);
+};
+
+int host1x_driver_register(struct host1x_driver *driver);
+void host1x_driver_unregister(struct host1x_driver *driver);
+
+struct host1x_device {
+ struct host1x_driver *driver;
+ struct list_head list;
+ struct device dev;
+
+ struct mutex subdevs_lock;
+ struct list_head subdevs;
+ struct list_head active;
+
+ struct mutex clients_lock;
+ struct list_head clients;
+};
+
+static inline struct host1x_device *to_host1x_device(struct device *dev)
+{
+ return container_of(dev, struct host1x_device, dev);
+}
+
+int host1x_device_init(struct host1x_device *device);
+int host1x_device_exit(struct host1x_device *device);
+
+int host1x_client_register(struct host1x_client *client);
+int host1x_client_unregister(struct host1x_client *client);
+
#endif
projects / ~andy / linux / commitdiff