289 lines
7.0 KiB
C
289 lines
7.0 KiB
C
/*
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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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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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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/of_graph.h>
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#include <drm/drmP.h>
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#include <drm/drm_gem_cma_helper.h>
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#include <drm/drm_fb_cma_helper.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_crtc_helper.h>
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#include <drm/drm_of.h>
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#include "kirin_drm_drv.h"
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static struct kirin_dc_ops *dc_ops;
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static int kirin_drm_kms_cleanup(struct drm_device *dev)
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{
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struct kirin_drm_private *priv = dev->dev_private;
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#ifdef CONFIG_DRM_FBDEV_EMULATION
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if (priv->fbdev) {
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drm_fbdev_cma_fini(priv->fbdev);
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priv->fbdev = NULL;
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}
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#endif
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drm_kms_helper_poll_fini(dev);
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drm_vblank_cleanup(dev);
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dc_ops->cleanup(to_platform_device(dev->dev));
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drm_mode_config_cleanup(dev);
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devm_kfree(dev->dev, priv);
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dev->dev_private = NULL;
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return 0;
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}
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#ifdef CONFIG_DRM_FBDEV_EMULATION
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static void kirin_fbdev_output_poll_changed(struct drm_device *dev)
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{
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struct kirin_drm_private *priv = dev->dev_private;
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if (priv->fbdev) {
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drm_fbdev_cma_hotplug_event(priv->fbdev);
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} else {
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priv->fbdev = drm_fbdev_cma_init(dev, 32,
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dev->mode_config.num_connector);
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if (IS_ERR(priv->fbdev))
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priv->fbdev = NULL;
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}
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}
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#endif
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static const struct drm_mode_config_funcs kirin_drm_mode_config_funcs = {
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.fb_create = drm_fb_cma_create,
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#ifdef CONFIG_DRM_FBDEV_EMULATION
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.output_poll_changed = kirin_fbdev_output_poll_changed,
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#endif
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.atomic_check = drm_atomic_helper_check,
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.atomic_commit = drm_atomic_helper_commit,
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};
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static void kirin_drm_mode_config_init(struct drm_device *dev)
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{
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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 = 2048;
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dev->mode_config.max_height = 2048;
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dev->mode_config.funcs = &kirin_drm_mode_config_funcs;
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}
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static int kirin_drm_kms_init(struct drm_device *dev)
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{
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struct kirin_drm_private *priv;
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int ret;
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priv = devm_kzalloc(dev->dev, sizeof(*priv), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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dev->dev_private = priv;
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dev_set_drvdata(dev->dev, dev);
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/* dev->mode_config initialization */
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drm_mode_config_init(dev);
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kirin_drm_mode_config_init(dev);
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/* display controller init */
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ret = dc_ops->init(to_platform_device(dev->dev));
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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_dc_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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/* with irq_enabled = true, we can use the vblank feature. */
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dev->irq_enabled = true;
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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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/* force detection after connectors init */
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(void)drm_helper_hpd_irq_event(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_dc_cleanup:
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dc_ops->cleanup(to_platform_device(dev->dev));
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err_mode_config_cleanup:
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drm_mode_config_cleanup(dev);
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devm_kfree(dev->dev, priv);
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dev->dev_private = NULL;
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return ret;
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}
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DEFINE_DRM_GEM_CMA_FOPS(kirin_drm_fops);
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static int kirin_gem_cma_dumb_create(struct drm_file *file,
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struct drm_device *dev,
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struct drm_mode_create_dumb *args)
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{
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return drm_gem_cma_dumb_create_internal(file, dev, args);
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}
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static struct drm_driver kirin_drm_driver = {
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.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME |
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DRIVER_ATOMIC,
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.fops = &kirin_drm_fops,
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.gem_free_object_unlocked = drm_gem_cma_free_object,
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.gem_vm_ops = &drm_gem_cma_vm_ops,
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.dumb_create = kirin_gem_cma_dumb_create,
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.dumb_map_offset = drm_gem_cma_dumb_map_offset,
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.dumb_destroy = drm_gem_dumb_destroy,
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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_export = drm_gem_prime_export,
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.gem_prime_import = drm_gem_prime_import,
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.gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
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.gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
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.gem_prime_vmap = drm_gem_cma_prime_vmap,
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.gem_prime_vunmap = drm_gem_cma_prime_vunmap,
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.gem_prime_mmap = drm_gem_cma_prime_mmap,
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.name = "kirin",
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.desc = "Hisilicon Kirin SoCs' DRM Driver",
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.date = "20150718",
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.major = 1,
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.minor = 0,
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};
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static int compare_of(struct device *dev, void *data)
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{
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return dev->of_node == data;
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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 drm_driver *driver = &kirin_drm_driver;
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struct drm_device *drm_dev;
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int ret;
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drm_dev = drm_dev_alloc(driver, dev);
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if (IS_ERR(drm_dev))
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return PTR_ERR(drm_dev);
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ret = kirin_drm_kms_init(drm_dev);
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if (ret)
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goto err_drm_dev_unref;
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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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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_unref:
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drm_dev_unref(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_unref(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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dc_ops = (struct kirin_dc_ops *)of_device_get_match_data(dev);
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if (!dc_ops) {
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DRM_ERROR("failed to get dt id data\n");
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return -EINVAL;
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}
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remote = of_graph_get_remote_node(np, 0, 0);
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if (IS_ERR(remote))
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return PTR_ERR(remote);
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drm_of_component_match_add(dev, &match, 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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return 0;
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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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dc_ops = NULL;
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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_dc_ops,
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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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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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