1 // SPDX-License-Identifier: GPL-2.0-only
3 * Hisilicon Kirin SoCs drm master driver
5 * Copyright (c) 2016 Linaro Limited.
6 * Copyright (c) 2014-2016 Hisilicon Limited.
9 * Xinliang Liu <z.liuxinliang@hisilicon.com>
10 * Xinliang Liu <xinliang.liu@linaro.org>
11 * Xinwei Kong <kong.kongxinwei@hisilicon.com>
14 #include <linux/of_platform.h>
15 #include <linux/component.h>
16 #include <linux/of_graph.h>
19 #include <drm/drm_atomic_helper.h>
20 #include <drm/drm_fb_cma_helper.h>
21 #include <drm/drm_fb_helper.h>
22 #include <drm/drm_gem_cma_helper.h>
23 #include <drm/drm_gem_framebuffer_helper.h>
24 #include <drm/drm_of.h>
25 #include <drm/drm_probe_helper.h>
27 #include "kirin_drm_drv.h"
29 static struct kirin_dc_ops *dc_ops;
31 static int kirin_drm_kms_cleanup(struct drm_device *dev)
33 drm_kms_helper_poll_fini(dev);
34 dc_ops->cleanup(to_platform_device(dev->dev));
35 drm_mode_config_cleanup(dev);
40 static const struct drm_mode_config_funcs kirin_drm_mode_config_funcs = {
41 .fb_create = drm_gem_fb_create,
42 .atomic_check = drm_atomic_helper_check,
43 .atomic_commit = drm_atomic_helper_commit,
46 static void kirin_drm_mode_config_init(struct drm_device *dev)
48 dev->mode_config.min_width = 0;
49 dev->mode_config.min_height = 0;
51 dev->mode_config.max_width = 2048;
52 dev->mode_config.max_height = 2048;
54 dev->mode_config.funcs = &kirin_drm_mode_config_funcs;
57 static int kirin_drm_kms_init(struct drm_device *dev)
61 dev_set_drvdata(dev->dev, dev);
63 /* dev->mode_config initialization */
64 drm_mode_config_init(dev);
65 kirin_drm_mode_config_init(dev);
67 /* display controller init */
68 ret = dc_ops->init(to_platform_device(dev->dev));
70 goto err_mode_config_cleanup;
72 /* bind and init sub drivers */
73 ret = component_bind_all(dev->dev, dev);
75 DRM_ERROR("failed to bind all component.\n");
80 ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
82 DRM_ERROR("failed to initialize vblank.\n");
85 /* with irq_enabled = true, we can use the vblank feature. */
86 dev->irq_enabled = true;
88 /* reset all the states of crtc/plane/encoder/connector */
89 drm_mode_config_reset(dev);
91 /* init kms poll for handling hpd */
92 drm_kms_helper_poll_init(dev);
97 component_unbind_all(dev->dev, dev);
99 dc_ops->cleanup(to_platform_device(dev->dev));
100 err_mode_config_cleanup:
101 drm_mode_config_cleanup(dev);
106 DEFINE_DRM_GEM_CMA_FOPS(kirin_drm_fops);
108 static int kirin_gem_cma_dumb_create(struct drm_file *file,
109 struct drm_device *dev,
110 struct drm_mode_create_dumb *args)
112 return drm_gem_cma_dumb_create_internal(file, dev, args);
115 static struct drm_driver kirin_drm_driver = {
116 .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME |
118 .fops = &kirin_drm_fops,
120 .gem_free_object_unlocked = drm_gem_cma_free_object,
121 .gem_vm_ops = &drm_gem_cma_vm_ops,
122 .dumb_create = kirin_gem_cma_dumb_create,
124 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
125 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
126 .gem_prime_export = drm_gem_prime_export,
127 .gem_prime_import = drm_gem_prime_import,
128 .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
129 .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
130 .gem_prime_vmap = drm_gem_cma_prime_vmap,
131 .gem_prime_vunmap = drm_gem_cma_prime_vunmap,
132 .gem_prime_mmap = drm_gem_cma_prime_mmap,
135 .desc = "Hisilicon Kirin SoCs' DRM Driver",
141 static int compare_of(struct device *dev, void *data)
143 return dev->of_node == data;
146 static int kirin_drm_bind(struct device *dev)
148 struct drm_driver *driver = &kirin_drm_driver;
149 struct drm_device *drm_dev;
152 drm_dev = drm_dev_alloc(driver, dev);
154 return PTR_ERR(drm_dev);
156 ret = kirin_drm_kms_init(drm_dev);
158 goto err_drm_dev_put;
160 ret = drm_dev_register(drm_dev, 0);
162 goto err_kms_cleanup;
164 drm_fbdev_generic_setup(drm_dev, 32);
169 kirin_drm_kms_cleanup(drm_dev);
171 drm_dev_put(drm_dev);
176 static void kirin_drm_unbind(struct device *dev)
178 struct drm_device *drm_dev = dev_get_drvdata(dev);
180 drm_dev_unregister(drm_dev);
181 kirin_drm_kms_cleanup(drm_dev);
182 drm_dev_put(drm_dev);
185 static const struct component_master_ops kirin_drm_ops = {
186 .bind = kirin_drm_bind,
187 .unbind = kirin_drm_unbind,
190 static int kirin_drm_platform_probe(struct platform_device *pdev)
192 struct device *dev = &pdev->dev;
193 struct device_node *np = dev->of_node;
194 struct component_match *match = NULL;
195 struct device_node *remote;
197 dc_ops = (struct kirin_dc_ops *)of_device_get_match_data(dev);
199 DRM_ERROR("failed to get dt id data\n");
203 remote = of_graph_get_remote_node(np, 0, 0);
207 drm_of_component_match_add(dev, &match, compare_of, remote);
210 return component_master_add_with_match(dev, &kirin_drm_ops, match);
215 static int kirin_drm_platform_remove(struct platform_device *pdev)
217 component_master_del(&pdev->dev, &kirin_drm_ops);
222 static const struct of_device_id kirin_drm_dt_ids[] = {
223 { .compatible = "hisilicon,hi6220-ade",
228 MODULE_DEVICE_TABLE(of, kirin_drm_dt_ids);
230 static struct platform_driver kirin_drm_platform_driver = {
231 .probe = kirin_drm_platform_probe,
232 .remove = kirin_drm_platform_remove,
235 .of_match_table = kirin_drm_dt_ids,
239 module_platform_driver(kirin_drm_platform_driver);
241 MODULE_AUTHOR("Xinliang Liu <xinliang.liu@linaro.org>");
242 MODULE_AUTHOR("Xinliang Liu <z.liuxinliang@hisilicon.com>");
243 MODULE_AUTHOR("Xinwei Kong <kong.kongxinwei@hisilicon.com>");
244 MODULE_DESCRIPTION("hisilicon Kirin SoCs' DRM master driver");
245 MODULE_LICENSE("GPL v2");