185 lines
4.1 KiB
C
185 lines
4.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright 2016 Linaro Ltd.
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* Copyright 2016 ZTE Corporation.
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*/
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#include <linux/clk.h>
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#include <linux/component.h>
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#include <linux/list.h>
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#include <linux/module.h>
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#include <linux/of_graph.h>
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#include <linux/of_platform.h>
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#include <linux/spinlock.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_crtc.h>
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#include <drm/drm_drv.h>
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#include <drm/drm_fb_cma_helper.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_gem_framebuffer_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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#include "zx_drm_drv.h"
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#include "zx_vou.h"
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static const struct drm_mode_config_funcs zx_drm_mode_config_funcs = {
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.fb_create = drm_gem_fb_create,
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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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DEFINE_DRM_GEM_CMA_FOPS(zx_drm_fops);
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static const struct drm_driver zx_drm_driver = {
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.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
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DRM_GEM_CMA_DRIVER_OPS,
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.fops = &zx_drm_fops,
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.name = "zx-vou",
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.desc = "ZTE VOU Controller DRM",
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.date = "20160811",
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.major = 1,
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.minor = 0,
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};
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static int zx_drm_bind(struct device *dev)
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{
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struct drm_device *drm;
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int ret;
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drm = drm_dev_alloc(&zx_drm_driver, dev);
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if (IS_ERR(drm))
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return PTR_ERR(drm);
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dev_set_drvdata(dev, drm);
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drm_mode_config_init(drm);
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drm->mode_config.min_width = 16;
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drm->mode_config.min_height = 16;
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drm->mode_config.max_width = 4096;
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drm->mode_config.max_height = 4096;
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drm->mode_config.funcs = &zx_drm_mode_config_funcs;
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ret = component_bind_all(dev, drm);
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if (ret) {
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DRM_DEV_ERROR(dev, "failed to bind all components: %d\n", ret);
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goto out_unregister;
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}
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ret = drm_vblank_init(drm, drm->mode_config.num_crtc);
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if (ret < 0) {
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DRM_DEV_ERROR(dev, "failed to init vblank: %d\n", ret);
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goto out_unbind;
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}
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drm_mode_config_reset(drm);
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drm_kms_helper_poll_init(drm);
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ret = drm_dev_register(drm, 0);
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if (ret)
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goto out_poll_fini;
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drm_fbdev_generic_setup(drm, 32);
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return 0;
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out_poll_fini:
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drm_kms_helper_poll_fini(drm);
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drm_mode_config_cleanup(drm);
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out_unbind:
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component_unbind_all(dev, drm);
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out_unregister:
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dev_set_drvdata(dev, NULL);
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drm_dev_put(drm);
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return ret;
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}
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static void zx_drm_unbind(struct device *dev)
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{
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struct drm_device *drm = dev_get_drvdata(dev);
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drm_dev_unregister(drm);
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drm_kms_helper_poll_fini(drm);
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drm_atomic_helper_shutdown(drm);
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drm_mode_config_cleanup(drm);
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component_unbind_all(dev, drm);
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dev_set_drvdata(dev, NULL);
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drm_dev_put(drm);
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}
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static const struct component_master_ops zx_drm_master_ops = {
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.bind = zx_drm_bind,
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.unbind = zx_drm_unbind,
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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 zx_drm_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 *parent = dev->of_node;
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struct device_node *child;
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struct component_match *match = NULL;
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int ret;
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ret = devm_of_platform_populate(dev);
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if (ret)
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return ret;
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for_each_available_child_of_node(parent, child)
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component_match_add(dev, &match, compare_of, child);
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return component_master_add_with_match(dev, &zx_drm_master_ops, match);
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}
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static int zx_drm_remove(struct platform_device *pdev)
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{
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component_master_del(&pdev->dev, &zx_drm_master_ops);
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return 0;
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}
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static const struct of_device_id zx_drm_of_match[] = {
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{ .compatible = "zte,zx296718-vou", },
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{ /* end */ },
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};
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MODULE_DEVICE_TABLE(of, zx_drm_of_match);
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static struct platform_driver zx_drm_platform_driver = {
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.probe = zx_drm_probe,
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.remove = zx_drm_remove,
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.driver = {
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.name = "zx-drm",
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.of_match_table = zx_drm_of_match,
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},
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};
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static struct platform_driver *drivers[] = {
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&zx_crtc_driver,
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&zx_hdmi_driver,
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&zx_tvenc_driver,
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&zx_vga_driver,
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&zx_drm_platform_driver,
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};
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static int zx_drm_init(void)
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{
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return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
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}
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module_init(zx_drm_init);
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static void zx_drm_exit(void)
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{
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platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
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}
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module_exit(zx_drm_exit);
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MODULE_AUTHOR("Shawn Guo <shawn.guo@linaro.org>");
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MODULE_DESCRIPTION("ZTE ZX VOU DRM driver");
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MODULE_LICENSE("GPL v2");
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