diff options
| -rw-r--r-- | drivers/gpu/host1x/Makefile | 2 | ||||
| -rw-r--r-- | drivers/gpu/host1x/bus.c | 550 | ||||
| -rw-r--r-- | drivers/gpu/host1x/bus.h (renamed from drivers/gpu/host1x/host1x_client.h) | 24 | ||||
| -rw-r--r-- | drivers/gpu/host1x/dev.c | 60 | ||||
| -rw-r--r-- | drivers/gpu/host1x/dev.h | 9 | ||||
| -rw-r--r-- | drivers/gpu/host1x/drm/bus.c | 76 | ||||
| -rw-r--r-- | drivers/gpu/host1x/drm/dc.c | 30 | ||||
| -rw-r--r-- | drivers/gpu/host1x/drm/drm.c | 347 | ||||
| -rw-r--r-- | drivers/gpu/host1x/drm/drm.h | 31 | ||||
| -rw-r--r-- | drivers/gpu/host1x/drm/gr2d.c | 60 | ||||
| -rw-r--r-- | drivers/gpu/host1x/drm/hdmi.c | 28 | ||||
| -rw-r--r-- | include/drm/drmP.h | 1 | ||||
| -rw-r--r-- | include/linux/host1x.h | 45 |
13 files changed, 898 insertions, 365 deletions
diff --git a/drivers/gpu/host1x/Makefile b/drivers/gpu/host1x/Makefile index 3b037b6e0298..7b781920c58a 100644 --- a/drivers/gpu/host1x/Makefile +++ b/drivers/gpu/host1x/Makefile @@ -1,6 +1,7 @@ ccflags-y = -Idrivers/gpu/host1x host1x-y = \ + bus.o \ syncpt.o \ dev.o \ intr.o \ @@ -17,4 +18,5 @@ 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-$(CONFIG_DRM_TEGRA) += drm/gem.o host1x-$(CONFIG_DRM_TEGRA) += drm/gr2d.o +host1x-$(CONFIG_DRM_TEGRA) += drm/bus.o obj-$(CONFIG_TEGRA_HOST1X) += host1x.o diff --git a/drivers/gpu/host1x/bus.c b/drivers/gpu/host1x/bus.c new file mode 100644 index 000000000000..509383f8be03 --- /dev/null +++ b/drivers/gpu/host1x/bus.c @@ -0,0 +1,550 @@ +/* + * 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); diff --git a/drivers/gpu/host1x/host1x_client.h b/drivers/gpu/host1x/bus.h index 6a0bd0268042..4099e99212c8 100644 --- a/drivers/gpu/host1x/host1x_client.h +++ b/drivers/gpu/host1x/bus.h @@ -1,5 +1,6 @@ /* - * 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, @@ -14,22 +15,15 @@ * 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 diff --git a/drivers/gpu/host1x/dev.c b/drivers/gpu/host1x/dev.c index 105aa4ed665a..de0fd552710d 100644 --- a/drivers/gpu/host1x/dev.c +++ b/drivers/gpu/host1x/dev.c @@ -27,24 +27,12 @@ #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) { @@ -114,6 +102,9 @@ static int host1x_probe(struct platform_device *pdev) 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; @@ -163,10 +154,14 @@ static int host1x_probe(struct platform_device *pdev) 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; @@ -176,6 +171,7 @@ static int host1x_remove(struct platform_device *pdev) { struct host1x *host = platform_get_drvdata(pdev); + host1x_unregister(host); host1x_intr_deinit(host); host1x_syncpt_deinit(host); clk_disable_unprepare(host->clk); @@ -196,46 +192,24 @@ static int __init tegra_host1x_init(void) { 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); diff --git a/drivers/gpu/host1x/dev.h b/drivers/gpu/host1x/dev.h index bed90a8131be..6cf689b9e17b 100644 --- a/drivers/gpu/host1x/dev.h +++ b/drivers/gpu/host1x/dev.h @@ -125,7 +125,10 @@ struct host1x { 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); @@ -301,8 +304,4 @@ static inline void host1x_hw_show_mlocks(struct host1x *host, struct output *o) 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 diff --git a/drivers/gpu/host1x/drm/bus.c b/drivers/gpu/host1x/drm/bus.c new file mode 100644 index 000000000000..565f8f7b9a47 --- /dev/null +++ b/drivers/gpu/host1x/drm/bus.c @@ -0,0 +1,76 @@ +/* + * 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); +} diff --git a/drivers/gpu/host1x/drm/dc.c b/drivers/gpu/host1x/drm/dc.c index 5106df08f046..588d4ba0d8cf 100644 --- a/drivers/gpu/host1x/drm/dc.c +++ b/drivers/gpu/host1x/drm/dc.c @@ -11,7 +11,6 @@ #include <linux/clk/tegra.h> #include <linux/debugfs.h> -#include "host1x_client.h" #include "dc.h" #include "drm.h" #include "gem.h" @@ -1040,28 +1039,28 @@ static int tegra_dc_debugfs_exit(struct tegra_dc *dc) 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); } @@ -1079,8 +1078,7 @@ static int tegra_dc_init(struct host1x_client *client) 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); @@ -1107,7 +1105,6 @@ static const struct host1x_client_ops dc_client_ops = { 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; @@ -1141,9 +1138,9 @@ static int tegra_dc_probe(struct platform_device *pdev) 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) { @@ -1151,7 +1148,7 @@ static int tegra_dc_probe(struct platform_device *pdev) 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); @@ -1165,11 +1162,10 @@ static int tegra_dc_probe(struct platform_device *pdev) 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); diff --git a/drivers/gpu/host1x/drm/drm.c b/drivers/gpu/host1x/drm/drm.c index 1abcdbc7f4cd..c2db409bbd63 100644 --- a/drivers/gpu/host1x/drm/drm.c +++ b/drivers/gpu/host1x/drm/drm.c @@ -7,7 +7,8 @@ * published by the Free Software Foundation. */ -#include "host1x_client.h" +#include <linux/host1x.h> + #include "drm.h" #include "gem.h" @@ -22,239 +23,25 @@ struct tegra_drm_file { 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; @@ -280,9 +67,16 @@ static int tegra_drm_load(struct drm_device *drm, unsigned long flags) 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; @@ -370,10 +164,11 @@ static int tegra_gem_mmap(struct drm_device *drm, void *data, 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; @@ -384,10 +179,11 @@ static int tegra_syncpt_read(struct drm_device *drm, void *data, 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; @@ -397,10 +193,11 @@ static int tegra_syncpt_incr(struct drm_device *drm, void *data, 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; @@ -422,7 +219,7 @@ static int tegra_open_channel(struct drm_device *drm, void *data, 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) @@ -441,8 +238,8 @@ static int tegra_open_channel(struct drm_device *drm, void *data, 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); @@ -652,3 +449,97 @@ struct drm_driver tegra_drm_driver = { .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"); diff --git a/drivers/gpu/host1x/drm/drm.h b/drivers/gpu/host1x/drm/drm.h index 8c26c6b1f5e1..25522e23c7b8 100644 --- a/drivers/gpu/host1x/drm/drm.h +++ b/drivers/gpu/host1x/drm/drm.h @@ -32,11 +32,6 @@ struct tegra_fbdev { 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; @@ -63,29 +58,29 @@ struct tegra_drm_client_ops { 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; @@ -109,7 +104,7 @@ struct tegra_dc { }; 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); } @@ -235,6 +230,10 @@ static inline int tegra_output_check_mode(struct tegra_output *output, 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); @@ -252,6 +251,8 @@ extern int tegra_drm_fb_init(struct drm_device *drm); 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 */ diff --git a/drivers/gpu/host1x/drm/gr2d.c b/drivers/gpu/host1x/drm/gr2d.c index dfb822428ca0..4e407e30da1c 100644 --- a/drivers/gpu/host1x/drm/gr2d.c +++ b/drivers/gpu/host1x/drm/gr2d.c @@ -16,7 +16,6 @@ #include <linux/clk.h> -#include "host1x_client.h" #include "drm.h" #include "gem.h" @@ -35,19 +34,45 @@ static inline struct gr2d *to_gr2d(struct tegra_drm_client *client) 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, @@ -240,7 +265,6 @@ static const u32 gr2d_addr_regs[] = { 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; @@ -267,25 +291,17 @@ static int gr2d_probe(struct platform_device *pdev) 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; @@ -302,22 +318,16 @@ static int gr2d_probe(struct platform_device *pdev) 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; diff --git a/drivers/gpu/host1x/drm/hdmi.c b/drivers/gpu/host1x/drm/hdmi.c index a2370045993c..f5663d15670b 100644 --- a/drivers/gpu/host1x/drm/hdmi.c +++ b/drivers/gpu/host1x/drm/hdmi.c @@ -13,13 +13,12 @@ #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; @@ -43,7 +42,7 @@ struct tegra_hdmi { }; 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); } @@ -1118,22 +1117,22 @@ static int tegra_hdmi_debugfs_exit(struct tegra_hdmi *hdmi) 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); } @@ -1143,8 +1142,7 @@ static int tegra_hdmi_init(struct host1x_client *client) 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)) { @@ -1176,7 +1174,6 @@ static const struct host1x_client_ops hdmi_client_ops = { 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; @@ -1247,11 +1244,11 @@ static int tegra_hdmi_probe(struct platform_device *pdev) 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); @@ -1265,11 +1262,10 @@ static int tegra_hdmi_probe(struct platform_device *pdev) 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); diff --git a/include/drm/drmP.h b/include/drm/drmP.h index 2b954adf5bd4..ffd8ad92cdf9 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -150,6 +150,7 @@ int drm_err(const char *func, const char *format, ...); #define DRIVER_BUS_PCI 0x1 #define DRIVER_BUS_PLATFORM 0x2 #define DRIVER_BUS_USB 0x3 +#define DRIVER_BUS_HOST1X 0x4 /***********************************************************************/ /** \name Begin the DRM... */ diff --git a/include/linux/host1x.h b/include/linux/host1x.h index 7442f2a57039..e62c61a4afa9 100644 --- a/include/linux/host1x.h +++ b/include/linux/host1x.h @@ -19,7 +19,7 @@ #ifndef __LINUX_HOST1X_H #define __LINUX_HOST1X_H -#include <linux/kref.h> +#include <linux/device.h> #include <linux/types.h> enum host1x_class { @@ -37,6 +37,7 @@ struct host1x_client_ops { struct host1x_client { struct list_head list; + struct device *parent; struct device *dev; const struct host1x_client_ops *ops; @@ -230,4 +231,46 @@ void host1x_job_put(struct host1x_job *job); 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 |