312 lines
7.5 KiB
C
312 lines
7.5 KiB
C
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Hisilicon Kirin SoCs drm master driver
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*
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* Copyright (c) 2016 Linaro Limited.
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* Copyright (c) 2014-2016 HiSilicon Limited.
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*
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* Author:
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* Xinliang Liu <z.liuxinliang@hisilicon.com>
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* Xinliang Liu <xinliang.liu@linaro.org>
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* Xinwei Kong <kong.kongxinwei@hisilicon.com>
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*/
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#include <linux/of_platform.h>
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#include <linux/component.h>
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#include <linux/module.h>
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#include <linux/of_graph.h>
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#include <linux/platform_device.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_drv.h>
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#include <drm/drm_fbdev_generic.h>
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#include <drm/drm_gem_dma_helper.h>
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#include <drm/drm_gem_framebuffer_helper.h>
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#include <drm/drm_module.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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#include "kirin_drm_drv.h"
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#define KIRIN_MAX_PLANE 2
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struct kirin_drm_private {
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struct kirin_crtc crtc;
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struct kirin_plane planes[KIRIN_MAX_PLANE];
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void *hw_ctx;
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};
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static int kirin_drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
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struct drm_plane *plane,
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const struct kirin_drm_data *driver_data)
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{
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struct device_node *port;
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int ret;
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/* set crtc port so that
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* drm_of_find_possible_crtcs call works
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*/
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port = of_get_child_by_name(dev->dev->of_node, "port");
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if (!port) {
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DRM_ERROR("no port node found in %pOF\n", dev->dev->of_node);
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return -EINVAL;
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}
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of_node_put(port);
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crtc->port = port;
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ret = drm_crtc_init_with_planes(dev, crtc, plane, NULL,
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driver_data->crtc_funcs, NULL);
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if (ret) {
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DRM_ERROR("failed to init crtc.\n");
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return ret;
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}
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drm_crtc_helper_add(crtc, driver_data->crtc_helper_funcs);
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return 0;
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}
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static int kirin_drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
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enum drm_plane_type type,
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const struct kirin_drm_data *data)
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{
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int ret = 0;
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ret = drm_universal_plane_init(dev, plane, 1, data->plane_funcs,
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data->channel_formats,
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data->channel_formats_cnt,
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NULL, type, NULL);
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if (ret) {
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DRM_ERROR("fail to init plane, ch=%d\n", 0);
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return ret;
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}
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drm_plane_helper_add(plane, data->plane_helper_funcs);
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return 0;
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}
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static void kirin_drm_private_cleanup(struct drm_device *dev)
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{
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struct kirin_drm_private *kirin_priv = dev->dev_private;
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struct kirin_drm_data *data;
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data = (struct kirin_drm_data *)of_device_get_match_data(dev->dev);
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if (data->cleanup_hw_ctx)
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data->cleanup_hw_ctx(kirin_priv->hw_ctx);
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devm_kfree(dev->dev, kirin_priv);
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dev->dev_private = NULL;
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}
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static int kirin_drm_private_init(struct drm_device *dev,
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const struct kirin_drm_data *driver_data)
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{
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struct platform_device *pdev = to_platform_device(dev->dev);
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struct kirin_drm_private *kirin_priv;
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struct drm_plane *prim_plane;
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enum drm_plane_type type;
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void *ctx;
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int ret;
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u32 ch;
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kirin_priv = devm_kzalloc(dev->dev, sizeof(*kirin_priv), GFP_KERNEL);
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if (!kirin_priv) {
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DRM_ERROR("failed to alloc kirin_drm_private\n");
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return -ENOMEM;
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}
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ctx = driver_data->alloc_hw_ctx(pdev, &kirin_priv->crtc.base);
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if (IS_ERR(ctx)) {
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DRM_ERROR("failed to initialize kirin_priv hw ctx\n");
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return -EINVAL;
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}
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kirin_priv->hw_ctx = ctx;
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/*
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* plane init
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* TODO: Now only support primary plane, overlay planes
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* need to do.
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*/
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for (ch = 0; ch < driver_data->num_planes; ch++) {
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if (ch == driver_data->prim_plane)
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type = DRM_PLANE_TYPE_PRIMARY;
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else
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type = DRM_PLANE_TYPE_OVERLAY;
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ret = kirin_drm_plane_init(dev, &kirin_priv->planes[ch].base,
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type, driver_data);
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if (ret)
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return ret;
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kirin_priv->planes[ch].ch = ch;
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kirin_priv->planes[ch].hw_ctx = ctx;
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}
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/* crtc init */
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prim_plane = &kirin_priv->planes[driver_data->prim_plane].base;
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ret = kirin_drm_crtc_init(dev, &kirin_priv->crtc.base,
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prim_plane, driver_data);
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if (ret)
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return ret;
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kirin_priv->crtc.hw_ctx = ctx;
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dev->dev_private = kirin_priv;
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return 0;
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}
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static int kirin_drm_kms_init(struct drm_device *dev,
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const struct kirin_drm_data *driver_data)
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{
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int ret;
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/* dev->mode_config initialization */
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drm_mode_config_init(dev);
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dev->mode_config.min_width = 0;
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dev->mode_config.min_height = 0;
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dev->mode_config.max_width = driver_data->config_max_width;
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dev->mode_config.max_height = driver_data->config_max_width;
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dev->mode_config.funcs = driver_data->mode_config_funcs;
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/* display controller init */
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ret = kirin_drm_private_init(dev, driver_data);
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if (ret)
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goto err_mode_config_cleanup;
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/* bind and init sub drivers */
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ret = component_bind_all(dev->dev, dev);
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if (ret) {
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DRM_ERROR("failed to bind all component.\n");
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goto err_private_cleanup;
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}
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/* vblank init */
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ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
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if (ret) {
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DRM_ERROR("failed to initialize vblank.\n");
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goto err_unbind_all;
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}
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/* reset all the states of crtc/plane/encoder/connector */
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drm_mode_config_reset(dev);
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/* init kms poll for handling hpd */
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drm_kms_helper_poll_init(dev);
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return 0;
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err_unbind_all:
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component_unbind_all(dev->dev, dev);
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err_private_cleanup:
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kirin_drm_private_cleanup(dev);
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err_mode_config_cleanup:
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drm_mode_config_cleanup(dev);
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return ret;
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}
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static int kirin_drm_kms_cleanup(struct drm_device *dev)
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{
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drm_kms_helper_poll_fini(dev);
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kirin_drm_private_cleanup(dev);
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drm_mode_config_cleanup(dev);
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return 0;
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}
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static int kirin_drm_bind(struct device *dev)
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{
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struct kirin_drm_data *driver_data;
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struct drm_device *drm_dev;
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int ret;
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driver_data = (struct kirin_drm_data *)of_device_get_match_data(dev);
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if (!driver_data)
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return -EINVAL;
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drm_dev = drm_dev_alloc(driver_data->driver, dev);
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if (IS_ERR(drm_dev))
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return PTR_ERR(drm_dev);
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dev_set_drvdata(dev, drm_dev);
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/* display controller init */
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ret = kirin_drm_kms_init(drm_dev, driver_data);
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if (ret)
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goto err_drm_dev_put;
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ret = drm_dev_register(drm_dev, 0);
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if (ret)
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goto err_kms_cleanup;
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drm_fbdev_generic_setup(drm_dev, 32);
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return 0;
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err_kms_cleanup:
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kirin_drm_kms_cleanup(drm_dev);
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err_drm_dev_put:
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drm_dev_put(drm_dev);
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return ret;
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}
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static void kirin_drm_unbind(struct device *dev)
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{
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struct drm_device *drm_dev = dev_get_drvdata(dev);
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drm_dev_unregister(drm_dev);
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kirin_drm_kms_cleanup(drm_dev);
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drm_dev_put(drm_dev);
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}
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static const struct component_master_ops kirin_drm_ops = {
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.bind = kirin_drm_bind,
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.unbind = kirin_drm_unbind,
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};
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static int kirin_drm_platform_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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struct device_node *np = dev->of_node;
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struct component_match *match = NULL;
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struct device_node *remote;
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remote = of_graph_get_remote_node(np, 0, 0);
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if (!remote)
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return -ENODEV;
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drm_of_component_match_add(dev, &match, component_compare_of, remote);
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of_node_put(remote);
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return component_master_add_with_match(dev, &kirin_drm_ops, match);
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}
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static int kirin_drm_platform_remove(struct platform_device *pdev)
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{
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component_master_del(&pdev->dev, &kirin_drm_ops);
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return 0;
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}
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static const struct of_device_id kirin_drm_dt_ids[] = {
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{ .compatible = "hisilicon,hi6220-ade",
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.data = &ade_driver_data,
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},
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{ /* end node */ },
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};
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MODULE_DEVICE_TABLE(of, kirin_drm_dt_ids);
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static struct platform_driver kirin_drm_platform_driver = {
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.probe = kirin_drm_platform_probe,
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.remove = kirin_drm_platform_remove,
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.driver = {
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.name = "kirin-drm",
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.of_match_table = kirin_drm_dt_ids,
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},
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};
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drm_module_platform_driver(kirin_drm_platform_driver);
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MODULE_AUTHOR("Xinliang Liu <xinliang.liu@linaro.org>");
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MODULE_AUTHOR("Xinliang Liu <z.liuxinliang@hisilicon.com>");
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MODULE_AUTHOR("Xinwei Kong <kong.kongxinwei@hisilicon.com>");
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MODULE_DESCRIPTION("hisilicon Kirin SoCs' DRM master driver");
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MODULE_LICENSE("GPL v2");
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