2019-05-29 14:17:56 +00:00
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// SPDX-License-Identifier: GPL-2.0-only
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2014-08-22 10:36:26 +00:00
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/*
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* Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
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* Author:Mark Yao <mark.yao@rock-chips.com>
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*
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* based on exynos_drm_drv.c
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*/
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#include <linux/dma-mapping.h>
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2016-06-24 02:13:32 +00:00
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#include <linux/dma-iommu.h>
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2014-08-22 10:36:26 +00:00
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#include <linux/pm_runtime.h>
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2015-05-02 00:02:30 +00:00
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#include <linux/module.h>
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2014-08-22 10:36:26 +00:00
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#include <linux/of_graph.h>
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2018-08-30 21:12:05 +00:00
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#include <linux/of_platform.h>
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2014-08-22 10:36:26 +00:00
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#include <linux/component.h>
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2016-06-06 14:53:32 +00:00
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#include <linux/console.h>
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2016-06-24 02:13:32 +00:00
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#include <linux/iommu.h>
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2014-08-22 10:36:26 +00:00
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2019-07-16 06:42:19 +00:00
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#include <drm/drm_drv.h>
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#include <drm/drm_fb_helper.h>
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#include <drm/drm_gem_cma_helper.h>
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#include <drm/drm_of.h>
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#include <drm/drm_probe_helper.h>
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#include <drm/drm_vblank.h>
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2014-08-22 10:36:26 +00:00
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#include "rockchip_drm_drv.h"
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#include "rockchip_drm_fb.h"
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#include "rockchip_drm_fbdev.h"
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#include "rockchip_drm_gem.h"
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#define DRIVER_NAME "rockchip"
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#define DRIVER_DESC "RockChip Soc DRM"
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#define DRIVER_DATE "20140818"
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#define DRIVER_MAJOR 1
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#define DRIVER_MINOR 0
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2016-04-19 02:13:27 +00:00
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static bool is_support_iommu = true;
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2016-06-10 11:14:13 +00:00
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static struct drm_driver rockchip_drm_driver;
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2016-04-19 02:13:27 +00:00
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2014-08-22 10:36:26 +00:00
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/*
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* Attach a (component) device to the shared drm dma mapping from master drm
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* device. This is used by the VOPs to map GEM buffers to a common DMA
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* mapping.
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*/
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int rockchip_drm_dma_attach_device(struct drm_device *drm_dev,
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struct device *dev)
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{
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2016-06-24 02:13:32 +00:00
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struct rockchip_drm_private *private = drm_dev->dev_private;
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2014-08-22 10:36:26 +00:00
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int ret;
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2016-04-19 02:13:27 +00:00
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if (!is_support_iommu)
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return 0;
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2016-06-24 02:13:32 +00:00
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ret = iommu_attach_device(private->domain, dev);
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if (ret) {
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2017-09-15 08:36:03 +00:00
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DRM_DEV_ERROR(dev, "Failed to attach iommu device\n");
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2014-08-22 10:36:26 +00:00
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return ret;
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2016-06-24 02:13:32 +00:00
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}
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2014-08-22 10:36:26 +00:00
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2016-06-24 02:13:32 +00:00
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return 0;
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2014-08-22 10:36:26 +00:00
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}
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void rockchip_drm_dma_detach_device(struct drm_device *drm_dev,
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struct device *dev)
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{
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2016-06-24 02:13:32 +00:00
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struct rockchip_drm_private *private = drm_dev->dev_private;
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struct iommu_domain *domain = private->domain;
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2016-04-19 02:13:27 +00:00
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if (!is_support_iommu)
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return;
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2016-06-24 02:13:32 +00:00
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iommu_detach_device(domain, dev);
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2014-08-22 10:36:26 +00:00
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}
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2016-06-24 02:13:32 +00:00
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static int rockchip_drm_init_iommu(struct drm_device *drm_dev)
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{
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struct rockchip_drm_private *private = drm_dev->dev_private;
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struct iommu_domain_geometry *geometry;
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u64 start, end;
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if (!is_support_iommu)
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return 0;
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private->domain = iommu_domain_alloc(&platform_bus_type);
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if (!private->domain)
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return -ENOMEM;
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geometry = &private->domain->geometry;
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start = geometry->aperture_start;
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end = geometry->aperture_end;
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DRM_DEBUG("IOMMU context initialized (aperture: %#llx-%#llx)\n",
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start, end);
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drm_mm_init(&private->mm, start, end - start + 1);
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mutex_init(&private->mm_lock);
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return 0;
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}
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static void rockchip_iommu_cleanup(struct drm_device *drm_dev)
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{
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struct rockchip_drm_private *private = drm_dev->dev_private;
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if (!is_support_iommu)
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return;
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drm_mm_takedown(&private->mm);
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iommu_domain_free(private->domain);
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2014-08-22 10:36:26 +00:00
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}
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2016-06-10 11:14:13 +00:00
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static int rockchip_drm_bind(struct device *dev)
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2014-08-22 10:36:26 +00:00
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{
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2016-06-10 11:14:13 +00:00
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struct drm_device *drm_dev;
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2014-08-22 10:36:26 +00:00
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struct rockchip_drm_private *private;
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int ret;
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2016-06-10 11:14:13 +00:00
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drm_dev = drm_dev_alloc(&rockchip_drm_driver, dev);
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2016-09-21 14:59:19 +00:00
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if (IS_ERR(drm_dev))
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return PTR_ERR(drm_dev);
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2014-08-22 10:36:26 +00:00
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2016-06-10 11:14:13 +00:00
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dev_set_drvdata(dev, drm_dev);
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private = devm_kzalloc(drm_dev->dev, sizeof(*private), GFP_KERNEL);
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if (!private) {
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ret = -ENOMEM;
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2016-06-21 04:27:34 +00:00
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goto err_free;
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2016-06-10 11:14:13 +00:00
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}
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2014-08-22 10:36:26 +00:00
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drm_dev->dev_private = private;
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2016-07-24 06:57:44 +00:00
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INIT_LIST_HEAD(&private->psr_list);
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2018-03-05 22:22:54 +00:00
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mutex_init(&private->psr_list_lock);
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2016-07-24 06:57:44 +00:00
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2017-04-06 12:31:23 +00:00
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ret = rockchip_drm_init_iommu(drm_dev);
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if (ret)
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goto err_free;
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2020-03-23 14:49:36 +00:00
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ret = drmm_mode_config_init(drm_dev);
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if (ret)
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goto err_iommu_cleanup;
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2014-08-22 10:36:26 +00:00
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rockchip_drm_mode_config_init(drm_dev);
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/* Try to bind all sub drivers. */
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ret = component_bind_all(dev, drm_dev);
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if (ret)
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2020-03-23 14:49:36 +00:00
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goto err_iommu_cleanup;
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2014-08-22 10:36:26 +00:00
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2017-04-06 12:31:23 +00:00
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ret = drm_vblank_init(drm_dev, drm_dev->mode_config.num_crtc);
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if (ret)
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goto err_unbind_all;
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drm_mode_config_reset(drm_dev);
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2014-08-22 10:36:26 +00:00
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/*
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* enable drm irq mode.
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* - with irq_enabled = true, we can use the vblank feature.
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*/
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drm_dev->irq_enabled = true;
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ret = rockchip_drm_fbdev_init(drm_dev);
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if (ret)
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2017-08-01 08:11:43 +00:00
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goto err_unbind_all;
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/* init kms poll for handling hpd */
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drm_kms_helper_poll_init(drm_dev);
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2014-08-22 10:36:26 +00:00
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2016-06-21 04:27:34 +00:00
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ret = drm_dev_register(drm_dev, 0);
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if (ret)
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2017-08-01 08:11:43 +00:00
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goto err_kms_helper_poll_fini;
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2016-06-21 04:27:34 +00:00
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2014-08-22 10:36:26 +00:00
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return 0;
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err_kms_helper_poll_fini:
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drm_kms_helper_poll_fini(drm_dev);
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2017-08-01 08:11:43 +00:00
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rockchip_drm_fbdev_fini(drm_dev);
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2017-04-06 12:31:23 +00:00
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err_unbind_all:
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2014-08-22 10:36:26 +00:00
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component_unbind_all(dev, drm_dev);
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2020-03-23 14:49:36 +00:00
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err_iommu_cleanup:
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2017-04-06 12:31:23 +00:00
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rockchip_iommu_cleanup(drm_dev);
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2016-06-10 11:14:13 +00:00
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err_free:
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2018-07-17 11:09:27 +00:00
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drm_dev_put(drm_dev);
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2014-08-22 10:36:26 +00:00
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return ret;
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}
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2016-06-10 11:14:13 +00:00
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static void rockchip_drm_unbind(struct device *dev)
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2014-08-22 10:36:26 +00:00
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{
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2016-06-10 11:14:13 +00:00
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struct drm_device *drm_dev = dev_get_drvdata(dev);
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2014-08-22 10:36:26 +00:00
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2017-04-06 12:31:23 +00:00
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drm_dev_unregister(drm_dev);
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2014-08-22 10:36:26 +00:00
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rockchip_drm_fbdev_fini(drm_dev);
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drm_kms_helper_poll_fini(drm_dev);
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2017-04-06 12:31:23 +00:00
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2017-04-06 12:31:24 +00:00
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drm_atomic_helper_shutdown(drm_dev);
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2014-08-22 10:36:26 +00:00
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component_unbind_all(dev, drm_dev);
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2017-04-06 12:31:23 +00:00
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rockchip_iommu_cleanup(drm_dev);
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2018-07-17 11:09:27 +00:00
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drm_dev_put(drm_dev);
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2014-08-22 10:36:26 +00:00
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}
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static const struct file_operations rockchip_drm_driver_fops = {
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.owner = THIS_MODULE,
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.open = drm_open,
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.mmap = rockchip_gem_mmap,
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.poll = drm_poll,
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.read = drm_read,
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.unlocked_ioctl = drm_ioctl,
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.compat_ioctl = drm_compat_ioctl,
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.release = drm_release,
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};
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static struct drm_driver rockchip_drm_driver = {
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2019-06-17 15:39:24 +00:00
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.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC,
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2017-12-05 18:25:03 +00:00
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.lastclose = drm_fb_helper_lastclose,
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2016-05-30 17:53:12 +00:00
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.gem_vm_ops = &drm_gem_cma_vm_ops,
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2016-05-30 17:53:03 +00:00
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.gem_free_object_unlocked = rockchip_gem_free_object,
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2014-08-22 10:36:26 +00:00
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.dumb_create = rockchip_gem_dumb_create,
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.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
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.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
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.gem_prime_get_sg_table = rockchip_gem_prime_get_sg_table,
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2018-01-30 20:28:32 +00:00
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.gem_prime_import_sg_table = rockchip_gem_prime_import_sg_table,
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2014-08-22 10:36:26 +00:00
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.gem_prime_vmap = rockchip_gem_prime_vmap,
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.gem_prime_vunmap = rockchip_gem_prime_vunmap,
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.gem_prime_mmap = rockchip_gem_mmap_buf,
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.fops = &rockchip_drm_driver_fops,
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.name = DRIVER_NAME,
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.desc = DRIVER_DESC,
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.date = DRIVER_DATE,
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.major = DRIVER_MAJOR,
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.minor = DRIVER_MINOR,
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};
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#ifdef CONFIG_PM_SLEEP
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2016-06-06 14:53:32 +00:00
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static int rockchip_drm_sys_suspend(struct device *dev)
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{
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struct drm_device *drm = dev_get_drvdata(dev);
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2018-07-31 20:34:30 +00:00
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return drm_mode_config_helper_suspend(drm);
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2014-08-22 10:36:26 +00:00
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}
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static int rockchip_drm_sys_resume(struct device *dev)
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{
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struct drm_device *drm = dev_get_drvdata(dev);
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2017-08-09 10:41:03 +00:00
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2018-07-31 20:34:30 +00:00
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return drm_mode_config_helper_resume(drm);
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2014-08-22 10:36:26 +00:00
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}
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#endif
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static const struct dev_pm_ops rockchip_drm_pm_ops = {
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SET_SYSTEM_SLEEP_PM_OPS(rockchip_drm_sys_suspend,
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rockchip_drm_sys_resume)
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};
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2017-03-22 03:21:20 +00:00
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#define MAX_ROCKCHIP_SUB_DRIVERS 16
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static struct platform_driver *rockchip_sub_drivers[MAX_ROCKCHIP_SUB_DRIVERS];
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static int num_rockchip_sub_drivers;
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2014-08-22 10:36:26 +00:00
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2018-08-30 21:12:05 +00:00
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/*
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* Check if a vop endpoint is leading to a rockchip subdriver or bridge.
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* Should be called from the component bind stage of the drivers
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* to ensure that all subdrivers are probed.
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*
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* @ep: endpoint of a rockchip vop
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*
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* returns true if subdriver, false if external bridge and -ENODEV
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* if remote port does not contain a device.
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*/
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int rockchip_drm_endpoint_is_subdriver(struct device_node *ep)
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{
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struct device_node *node = of_graph_get_remote_port_parent(ep);
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struct platform_device *pdev;
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struct device_driver *drv;
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int i;
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if (!node)
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return -ENODEV;
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/* status disabled will prevent creation of platform-devices */
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pdev = of_find_device_by_node(node);
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of_node_put(node);
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if (!pdev)
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return -ENODEV;
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/*
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* All rockchip subdrivers have probed at this point, so
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* any device not having a driver now is an external bridge.
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*/
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drv = pdev->dev.driver;
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if (!drv) {
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platform_device_put(pdev);
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return false;
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}
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for (i = 0; i < num_rockchip_sub_drivers; i++) {
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if (rockchip_sub_drivers[i] == to_platform_driver(drv)) {
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platform_device_put(pdev);
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return true;
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}
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}
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platform_device_put(pdev);
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return false;
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}
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2017-03-22 03:21:20 +00:00
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static int compare_dev(struct device *dev, void *data)
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{
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|
|
return dev == (struct device *)data;
|
2014-08-22 10:36:26 +00:00
|
|
|
}
|
|
|
|
|
2018-02-07 17:53:09 +00:00
|
|
|
static void rockchip_drm_match_remove(struct device *dev)
|
|
|
|
{
|
|
|
|
struct device_link *link;
|
|
|
|
|
|
|
|
list_for_each_entry(link, &dev->links.consumers, s_node)
|
|
|
|
device_link_del(link);
|
|
|
|
}
|
|
|
|
|
2017-03-22 03:21:20 +00:00
|
|
|
static struct component_match *rockchip_drm_match_add(struct device *dev)
|
2015-11-10 08:47:19 +00:00
|
|
|
{
|
2017-03-22 03:21:20 +00:00
|
|
|
struct component_match *match = NULL;
|
|
|
|
int i;
|
2015-11-10 08:47:19 +00:00
|
|
|
|
2017-03-22 03:21:20 +00:00
|
|
|
for (i = 0; i < num_rockchip_sub_drivers; i++) {
|
|
|
|
struct platform_driver *drv = rockchip_sub_drivers[i];
|
|
|
|
struct device *p = NULL, *d;
|
|
|
|
|
|
|
|
do {
|
2019-07-23 22:18:38 +00:00
|
|
|
d = platform_find_device_by_driver(p, &drv->driver);
|
2017-03-22 03:21:20 +00:00
|
|
|
put_device(p);
|
|
|
|
p = d;
|
2015-11-10 08:47:19 +00:00
|
|
|
|
2017-03-22 03:21:20 +00:00
|
|
|
if (!d)
|
|
|
|
break;
|
2018-02-07 17:53:09 +00:00
|
|
|
|
|
|
|
device_link_add(dev, d, DL_FLAG_STATELESS);
|
2017-03-22 03:21:20 +00:00
|
|
|
component_match_add(dev, &match, compare_dev, d);
|
|
|
|
} while (true);
|
2015-11-10 08:47:19 +00:00
|
|
|
}
|
2017-03-22 03:21:20 +00:00
|
|
|
|
2018-02-07 17:53:09 +00:00
|
|
|
if (IS_ERR(match))
|
|
|
|
rockchip_drm_match_remove(dev);
|
|
|
|
|
2017-03-22 03:21:20 +00:00
|
|
|
return match ?: ERR_PTR(-ENODEV);
|
2015-11-10 08:47:19 +00:00
|
|
|
}
|
|
|
|
|
2014-08-22 10:36:26 +00:00
|
|
|
static const struct component_master_ops rockchip_drm_ops = {
|
|
|
|
.bind = rockchip_drm_bind,
|
|
|
|
.unbind = rockchip_drm_unbind,
|
|
|
|
};
|
|
|
|
|
2017-03-22 03:21:20 +00:00
|
|
|
static int rockchip_drm_platform_of_probe(struct device *dev)
|
2014-08-22 10:36:26 +00:00
|
|
|
{
|
2015-11-10 08:47:19 +00:00
|
|
|
struct device_node *np = dev->of_node;
|
|
|
|
struct device_node *port;
|
2017-03-22 03:21:20 +00:00
|
|
|
bool found = false;
|
2015-11-10 08:47:19 +00:00
|
|
|
int i;
|
2014-08-22 10:36:26 +00:00
|
|
|
|
2015-11-10 08:47:19 +00:00
|
|
|
if (!np)
|
2014-08-22 10:36:26 +00:00
|
|
|
return -ENODEV;
|
2017-03-22 03:21:20 +00:00
|
|
|
|
2015-11-10 08:47:19 +00:00
|
|
|
for (i = 0;; i++) {
|
2016-04-19 02:13:27 +00:00
|
|
|
struct device_node *iommu;
|
|
|
|
|
2015-11-10 08:47:19 +00:00
|
|
|
port = of_parse_phandle(np, "ports", i);
|
|
|
|
if (!port)
|
|
|
|
break;
|
|
|
|
|
|
|
|
if (!of_device_is_available(port->parent)) {
|
|
|
|
of_node_put(port);
|
|
|
|
continue;
|
|
|
|
}
|
2014-08-22 10:36:26 +00:00
|
|
|
|
2016-04-19 02:13:27 +00:00
|
|
|
iommu = of_parse_phandle(port->parent, "iommus", 0);
|
|
|
|
if (!iommu || !of_device_is_available(iommu->parent)) {
|
2017-09-15 08:36:03 +00:00
|
|
|
DRM_DEV_DEBUG(dev,
|
|
|
|
"no iommu attached for %pOF, using non-iommu buffers\n",
|
|
|
|
port->parent);
|
2016-04-19 02:13:27 +00:00
|
|
|
/*
|
|
|
|
* if there is a crtc not support iommu, force set all
|
|
|
|
* crtc use non-iommu buffer.
|
|
|
|
*/
|
|
|
|
is_support_iommu = false;
|
|
|
|
}
|
|
|
|
|
2017-03-22 03:21:20 +00:00
|
|
|
found = true;
|
|
|
|
|
2016-07-05 02:04:48 +00:00
|
|
|
of_node_put(iommu);
|
2015-11-10 08:47:19 +00:00
|
|
|
of_node_put(port);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (i == 0) {
|
2017-09-15 08:36:03 +00:00
|
|
|
DRM_DEV_ERROR(dev, "missing 'ports' property\n");
|
2015-11-10 08:47:19 +00:00
|
|
|
return -ENODEV;
|
|
|
|
}
|
|
|
|
|
2017-03-22 03:21:20 +00:00
|
|
|
if (!found) {
|
2017-09-15 08:36:03 +00:00
|
|
|
DRM_DEV_ERROR(dev,
|
|
|
|
"No available vop found for display-subsystem.\n");
|
2015-11-10 08:47:19 +00:00
|
|
|
return -ENODEV;
|
|
|
|
}
|
|
|
|
|
2017-03-22 03:21:20 +00:00
|
|
|
return 0;
|
|
|
|
}
|
2015-11-10 08:47:19 +00:00
|
|
|
|
2017-03-22 03:21:20 +00:00
|
|
|
static int rockchip_drm_platform_probe(struct platform_device *pdev)
|
|
|
|
{
|
|
|
|
struct device *dev = &pdev->dev;
|
|
|
|
struct component_match *match = NULL;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = rockchip_drm_platform_of_probe(dev);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
match = rockchip_drm_match_add(dev);
|
|
|
|
if (IS_ERR(match))
|
|
|
|
return PTR_ERR(match);
|
2015-11-10 08:47:19 +00:00
|
|
|
|
2018-02-07 17:53:09 +00:00
|
|
|
ret = component_master_add_with_match(dev, &rockchip_drm_ops, match);
|
|
|
|
if (ret < 0) {
|
|
|
|
rockchip_drm_match_remove(dev);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
2014-08-22 10:36:26 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int rockchip_drm_platform_remove(struct platform_device *pdev)
|
|
|
|
{
|
|
|
|
component_master_del(&pdev->dev, &rockchip_drm_ops);
|
|
|
|
|
2018-02-07 17:53:09 +00:00
|
|
|
rockchip_drm_match_remove(&pdev->dev);
|
|
|
|
|
2014-08-22 10:36:26 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2019-04-02 11:37:53 +00:00
|
|
|
static void rockchip_drm_platform_shutdown(struct platform_device *pdev)
|
|
|
|
{
|
|
|
|
struct drm_device *drm = platform_get_drvdata(pdev);
|
|
|
|
|
|
|
|
if (drm)
|
|
|
|
drm_atomic_helper_shutdown(drm);
|
|
|
|
}
|
|
|
|
|
2014-08-22 10:36:26 +00:00
|
|
|
static const struct of_device_id rockchip_drm_dt_ids[] = {
|
|
|
|
{ .compatible = "rockchip,display-subsystem", },
|
|
|
|
{ /* sentinel */ },
|
|
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, rockchip_drm_dt_ids);
|
|
|
|
|
|
|
|
static struct platform_driver rockchip_drm_platform_driver = {
|
|
|
|
.probe = rockchip_drm_platform_probe,
|
|
|
|
.remove = rockchip_drm_platform_remove,
|
2019-04-02 11:37:53 +00:00
|
|
|
.shutdown = rockchip_drm_platform_shutdown,
|
2014-08-22 10:36:26 +00:00
|
|
|
.driver = {
|
|
|
|
.name = "rockchip-drm",
|
|
|
|
.of_match_table = rockchip_drm_dt_ids,
|
|
|
|
.pm = &rockchip_drm_pm_ops,
|
|
|
|
},
|
|
|
|
};
|
|
|
|
|
2017-03-22 03:21:20 +00:00
|
|
|
#define ADD_ROCKCHIP_SUB_DRIVER(drv, cond) { \
|
|
|
|
if (IS_ENABLED(cond) && \
|
|
|
|
!WARN_ON(num_rockchip_sub_drivers >= MAX_ROCKCHIP_SUB_DRIVERS)) \
|
|
|
|
rockchip_sub_drivers[num_rockchip_sub_drivers++] = &drv; \
|
|
|
|
}
|
|
|
|
|
|
|
|
static int __init rockchip_drm_init(void)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
num_rockchip_sub_drivers = 0;
|
|
|
|
ADD_ROCKCHIP_SUB_DRIVER(vop_platform_driver, CONFIG_DRM_ROCKCHIP);
|
2017-09-02 11:28:54 +00:00
|
|
|
ADD_ROCKCHIP_SUB_DRIVER(rockchip_lvds_driver,
|
|
|
|
CONFIG_ROCKCHIP_LVDS);
|
2017-03-22 03:21:20 +00:00
|
|
|
ADD_ROCKCHIP_SUB_DRIVER(rockchip_dp_driver,
|
|
|
|
CONFIG_ROCKCHIP_ANALOGIX_DP);
|
|
|
|
ADD_ROCKCHIP_SUB_DRIVER(cdn_dp_driver, CONFIG_ROCKCHIP_CDN_DP);
|
|
|
|
ADD_ROCKCHIP_SUB_DRIVER(dw_hdmi_rockchip_pltfm_driver,
|
|
|
|
CONFIG_ROCKCHIP_DW_HDMI);
|
2018-10-01 12:38:43 +00:00
|
|
|
ADD_ROCKCHIP_SUB_DRIVER(dw_mipi_dsi_rockchip_driver,
|
2017-03-22 03:21:20 +00:00
|
|
|
CONFIG_ROCKCHIP_DW_MIPI_DSI);
|
|
|
|
ADD_ROCKCHIP_SUB_DRIVER(inno_hdmi_driver, CONFIG_ROCKCHIP_INNO_HDMI);
|
2019-03-30 09:56:36 +00:00
|
|
|
ADD_ROCKCHIP_SUB_DRIVER(rk3066_hdmi_driver,
|
|
|
|
CONFIG_ROCKCHIP_RK3066_HDMI);
|
2017-03-22 03:21:20 +00:00
|
|
|
|
|
|
|
ret = platform_register_drivers(rockchip_sub_drivers,
|
|
|
|
num_rockchip_sub_drivers);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
ret = platform_driver_register(&rockchip_drm_platform_driver);
|
|
|
|
if (ret)
|
|
|
|
goto err_unreg_drivers;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
err_unreg_drivers:
|
|
|
|
platform_unregister_drivers(rockchip_sub_drivers,
|
|
|
|
num_rockchip_sub_drivers);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __exit rockchip_drm_fini(void)
|
|
|
|
{
|
|
|
|
platform_driver_unregister(&rockchip_drm_platform_driver);
|
|
|
|
|
|
|
|
platform_unregister_drivers(rockchip_sub_drivers,
|
|
|
|
num_rockchip_sub_drivers);
|
|
|
|
}
|
|
|
|
|
|
|
|
module_init(rockchip_drm_init);
|
|
|
|
module_exit(rockchip_drm_fini);
|
2014-08-22 10:36:26 +00:00
|
|
|
|
|
|
|
MODULE_AUTHOR("Mark Yao <mark.yao@rock-chips.com>");
|
|
|
|
MODULE_DESCRIPTION("ROCKCHIP DRM Driver");
|
|
|
|
MODULE_LICENSE("GPL v2");
|