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9de1b51f1f
The only user is the info debugfs file, so we only need something human readable. Now for both pci and platform devices we've used the name of the underlying device driver, which matches the name of the drm driver in all cases. So we can just use that instead. The exception is usb, which used a generic "USB". Not to harmful with just one usb driver, but better to use "udl", too. With that converted we can rip out all the ->get_name implementations. Reviewed-by: Thierry Reding <treding@nvidia.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
129 lines
3.6 KiB
C
129 lines
3.6 KiB
C
/*
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* Derived from drm_pci.c
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*
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* Copyright 2003 José Fonseca.
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* Copyright 2003 Leif Delgass.
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* Copyright (c) 2009, Code Aurora Forum.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <linux/export.h>
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#include <drm/drmP.h>
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/*
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* Register.
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*
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* \param platdev - Platform device struture
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* \return zero on success or a negative number on failure.
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*
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* Attempt to gets inter module "drm" information. If we are first
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* then register the character device and inter module information.
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* Try and register, if we fail to register, backout previous work.
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*/
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static int drm_get_platform_dev(struct platform_device *platdev,
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struct drm_driver *driver)
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{
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struct drm_device *dev;
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int ret;
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DRM_DEBUG("\n");
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dev = drm_dev_alloc(driver, &platdev->dev);
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if (!dev)
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return -ENOMEM;
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dev->platformdev = platdev;
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ret = drm_dev_register(dev, 0);
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if (ret)
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goto err_free;
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DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
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driver->name, driver->major, driver->minor, driver->patchlevel,
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driver->date, dev->primary->index);
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return 0;
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err_free:
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drm_dev_unref(dev);
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return ret;
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}
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static int drm_platform_set_busid(struct drm_device *dev, struct drm_master *master)
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{
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int len, ret, id;
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master->unique_len = 13 + strlen(dev->platformdev->name);
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master->unique_size = master->unique_len;
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master->unique = kmalloc(master->unique_len + 1, GFP_KERNEL);
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if (master->unique == NULL)
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return -ENOMEM;
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id = dev->platformdev->id;
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/* if only a single instance of the platform device, id will be
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* set to -1.. use 0 instead to avoid a funny looking bus-id:
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*/
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if (id == -1)
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id = 0;
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len = snprintf(master->unique, master->unique_len,
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"platform:%s:%02d", dev->platformdev->name, id);
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if (len > master->unique_len) {
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DRM_ERROR("Unique buffer overflowed\n");
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ret = -EINVAL;
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goto err;
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}
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return 0;
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err:
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return ret;
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}
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static struct drm_bus drm_platform_bus = {
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.set_busid = drm_platform_set_busid,
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};
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/**
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* Platform device initialization. Called direct from modules.
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*
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* \return zero on success or a negative number on failure.
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*
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* Initializes a drm_device structures,registering the
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* stubs
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*
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* Expands the \c DRIVER_PREINIT and \c DRIVER_POST_INIT macros before and
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* after the initialization for driver customization.
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*/
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int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device)
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{
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DRM_DEBUG("\n");
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driver->kdriver.platform_device = platform_device;
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driver->bus = &drm_platform_bus;
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return drm_get_platform_dev(platform_device, driver);
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}
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EXPORT_SYMBOL(drm_platform_init);
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