Release 4.11 drivers/gpu/drm/zte/zx_drm_drv.c
/*
* Copyright 2016 Linaro Ltd.
* Copyright 2016 ZTE Corporation.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#include <linux/clk.h>
#include <linux/component.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/of_graph.h>
#include <linux/of_platform.h>
#include <linux/spinlock.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_gem_cma_helper.h>
#include <drm/drm_of.h>
#include <drm/drmP.h>
#include "zx_drm_drv.h"
#include "zx_vou.h"
struct zx_drm_private {
struct drm_fbdev_cma *fbdev;
};
static void zx_drm_fb_output_poll_changed(struct drm_device *drm)
{
struct zx_drm_private *priv = drm->dev_private;
drm_fbdev_cma_hotplug_event(priv->fbdev);
}
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static const struct drm_mode_config_funcs zx_drm_mode_config_funcs = {
.fb_create = drm_fb_cma_create,
.output_poll_changed = zx_drm_fb_output_poll_changed,
.atomic_check = drm_atomic_helper_check,
.atomic_commit = drm_atomic_helper_commit,
};
static void zx_drm_lastclose(struct drm_device *drm)
{
struct zx_drm_private *priv = drm->dev_private;
drm_fbdev_cma_restore_mode(priv->fbdev);
}
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static const struct file_operations zx_drm_fops = {
.owner = THIS_MODULE,
.open = drm_open,
.release = drm_release,
.unlocked_ioctl = drm_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = drm_compat_ioctl,
#endif
.poll = drm_poll,
.read = drm_read,
.llseek = noop_llseek,
.mmap = drm_gem_cma_mmap,
};
static struct drm_driver zx_drm_driver = {
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME |
DRIVER_ATOMIC,
.lastclose = zx_drm_lastclose,
.get_vblank_counter = drm_vblank_no_hw_counter,
.enable_vblank = zx_vou_enable_vblank,
.disable_vblank = zx_vou_disable_vblank,
.gem_free_object = drm_gem_cma_free_object,
.gem_vm_ops = &drm_gem_cma_vm_ops,
.dumb_create = drm_gem_cma_dumb_create,
.dumb_map_offset = drm_gem_cma_dumb_map_offset,
.dumb_destroy = drm_gem_dumb_destroy,
.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
.gem_prime_export = drm_gem_prime_export,
.gem_prime_import = drm_gem_prime_import,
.gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
.gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
.gem_prime_vmap = drm_gem_cma_prime_vmap,
.gem_prime_vunmap = drm_gem_cma_prime_vunmap,
.gem_prime_mmap = drm_gem_cma_prime_mmap,
.fops = &zx_drm_fops,
.name = "zx-vou",
.desc = "ZTE VOU Controller DRM",
.date = "20160811",
.major = 1,
.minor = 0,
};
static int zx_drm_bind(struct device *dev)
{
struct drm_device *drm;
struct zx_drm_private *priv;
int ret;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
drm = drm_dev_alloc(&zx_drm_driver, dev);
if (IS_ERR(drm))
return PTR_ERR(drm);
drm->dev_private = priv;
dev_set_drvdata(dev, drm);
drm_mode_config_init(drm);
drm->mode_config.min_width = 16;
drm->mode_config.min_height = 16;
drm->mode_config.max_width = 4096;
drm->mode_config.max_height = 4096;
drm->mode_config.funcs = &zx_drm_mode_config_funcs;
ret = component_bind_all(dev, drm);
if (ret) {
DRM_DEV_ERROR(dev, "failed to bind all components: %d\n", ret);
goto out_unregister;
}
ret = drm_vblank_init(drm, drm->mode_config.num_crtc);
if (ret < 0) {
DRM_DEV_ERROR(dev, "failed to init vblank: %d\n", ret);
goto out_unbind;
}
/*
* We will manage irq handler on our own. In this case, irq_enabled
* need to be true for using vblank core support.
*/
drm->irq_enabled = true;
drm_mode_config_reset(drm);
drm_kms_helper_poll_init(drm);
priv->fbdev = drm_fbdev_cma_init(drm, 32,
drm->mode_config.num_connector);
if (IS_ERR(priv->fbdev)) {
ret = PTR_ERR(priv->fbdev);
DRM_DEV_ERROR(dev, "failed to init cma fbdev: %d\n", ret);
priv->fbdev = NULL;
goto out_poll_fini;
}
ret = drm_dev_register(drm, 0);
if (ret)
goto out_fbdev_fini;
return 0;
out_fbdev_fini:
if (priv->fbdev) {
drm_fbdev_cma_fini(priv->fbdev);
priv->fbdev = NULL;
}
out_poll_fini:
drm_kms_helper_poll_fini(drm);
drm_mode_config_cleanup(drm);
drm_vblank_cleanup(drm);
out_unbind:
component_unbind_all(dev, drm);
out_unregister:
dev_set_drvdata(dev, NULL);
drm->dev_private = NULL;
drm_dev_unref(drm);
return ret;
}
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static void zx_drm_unbind(struct device *dev)
{
struct drm_device *drm = dev_get_drvdata(dev);
struct zx_drm_private *priv = drm->dev_private;
drm_dev_unregister(drm);
if (priv->fbdev) {
drm_fbdev_cma_fini(priv->fbdev);
priv->fbdev = NULL;
}
drm_kms_helper_poll_fini(drm);
drm_mode_config_cleanup(drm);
drm_vblank_cleanup(drm);
component_unbind_all(dev, drm);
dev_set_drvdata(dev, NULL);
drm->dev_private = NULL;
drm_dev_unref(drm);
}
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static const struct component_master_ops zx_drm_master_ops = {
.bind = zx_drm_bind,
.unbind = zx_drm_unbind,
};
static int compare_of(struct device *dev, void *data)
{
return dev->of_node == data;
}
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static int zx_drm_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *parent = dev->of_node;
struct device_node *child;
struct component_match *match = NULL;
int ret;
ret = of_platform_populate(parent, NULL, NULL, dev);
if (ret)
return ret;
for_each_available_child_of_node(parent, child) {
component_match_add(dev, &match, compare_of, child);
of_node_put(child);
}
return component_master_add_with_match(dev, &zx_drm_master_ops, match);
}
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static int zx_drm_remove(struct platform_device *pdev)
{
component_master_del(&pdev->dev, &zx_drm_master_ops);
return 0;
}
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static const struct of_device_id zx_drm_of_match[] = {
{ .compatible = "zte,zx296718-vou", },
{ /* end */ },
};
MODULE_DEVICE_TABLE(of, zx_drm_of_match);
static struct platform_driver zx_drm_platform_driver = {
.probe = zx_drm_probe,
.remove = zx_drm_remove,
.driver = {
.name = "zx-drm",
.of_match_table = zx_drm_of_match,
},
};
static struct platform_driver *drivers[] = {
&zx_crtc_driver,
&zx_hdmi_driver,
&zx_tvenc_driver,
&zx_drm_platform_driver,
};
static int zx_drm_init(void)
{
return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
}
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module_init(zx_drm_init);
static void zx_drm_exit(void)
{
platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
}
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module_exit(zx_drm_exit);
MODULE_AUTHOR("Shawn Guo <shawn.guo@linaro.org>");
MODULE_DESCRIPTION("ZTE ZX VOU DRM driver");
MODULE_LICENSE("GPL v2");
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| Dan Carpenter | 7 | 0.64% | 1 | 33.33% |
| Total | 1099 | 100.00% | 3 | 100.00% |
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