diff options
Diffstat (limited to 'drivers/gpu/host1x/bus.c')
| -rw-r--r-- | drivers/gpu/host1x/bus.c | 48 |
1 files changed, 35 insertions, 13 deletions
diff --git a/drivers/gpu/host1x/bus.c b/drivers/gpu/host1x/bus.c index 103fffc1904b..742aa9ff21b8 100644 --- a/drivers/gpu/host1x/bus.c +++ b/drivers/gpu/host1x/bus.c @@ -1,18 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * 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/debugfs.h> @@ -316,6 +305,36 @@ static int host1x_device_match(struct device *dev, struct device_driver *drv) return strcmp(dev_name(dev), drv->name) == 0; } +static int host1x_device_uevent(struct device *dev, + struct kobj_uevent_env *env) +{ + struct device_node *np = dev->parent->of_node; + unsigned int count = 0; + struct property *p; + const char *compat; + + /* + * This duplicates most of of_device_uevent(), but the latter cannot + * be called from modules and operates on dev->of_node, which is not + * available in this case. + * + * Note that this is really only needed for backwards compatibility + * with libdrm, which parses this information from sysfs and will + * fail if it can't find the OF_FULLNAME, specifically. + */ + add_uevent_var(env, "OF_NAME=%pOFn", np); + add_uevent_var(env, "OF_FULLNAME=%pOF", np); + + of_property_for_each_string(np, "compatible", p, compat) { + add_uevent_var(env, "OF_COMPATIBLE_%u=%s", count, compat); + count++; + } + + add_uevent_var(env, "OF_COMPATIBLE_N=%u", count); + + return 0; +} + static int host1x_dma_configure(struct device *dev) { return of_dma_configure(dev, dev->of_node, true); @@ -333,6 +352,7 @@ static const struct dev_pm_ops host1x_device_pm_ops = { struct bus_type host1x_bus_type = { .name = "host1x", .match = host1x_device_match, + .uevent = host1x_device_uevent, .dma_configure = host1x_dma_configure, .pm = &host1x_device_pm_ops, }; @@ -419,12 +439,14 @@ static int host1x_device_add(struct host1x *host1x, device->dev.dma_mask = &device->dev.coherent_dma_mask; dev_set_name(&device->dev, "%s", driver->driver.name); device->dev.release = host1x_device_release; - device->dev.of_node = host1x->dev->of_node; device->dev.bus = &host1x_bus_type; device->dev.parent = host1x->dev; of_dma_configure(&device->dev, host1x->dev->of_node, true); + device->dev.dma_parms = &device->dma_parms; + dma_set_max_seg_size(&device->dev, SZ_4M); + err = host1x_device_parse_dt(device, driver); if (err < 0) { kfree(device); |