// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2012 Russell King
*/
#include <linux/clk.h>
#include <linux/component.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_graph.h>
#include <linux/platform_device.h>
#include <drm/drm_aperture.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_drv.h>
#include <drm/drm_ioctl.h>
#include <drm/drm_managed.h>
#include <drm/drm_prime.h>
#include <drm/drm_probe_helper.h>
#include <drm/drm_of.h>
#include <drm/drm_vblank.h>
#include "armada_crtc.h"
#include "armada_drm.h"
#include "armada_gem.h"
#include "armada_fb.h"
#include "armada_hw.h"
#include <drm/armada_drm.h>
#include "armada_ioctlP.h"
static const struct drm_ioctl_desc armada_ioctls[] = {
DRM_IOCTL_DEF_DRV(ARMADA_GEM_CREATE, armada_gem_create_ioctl,0),
DRM_IOCTL_DEF_DRV(ARMADA_GEM_MMAP, armada_gem_mmap_ioctl, 0),
DRM_IOCTL_DEF_DRV(ARMADA_GEM_PWRITE, armada_gem_pwrite_ioctl, 0),
};
DEFINE_DRM_GEM_FOPS(armada_drm_fops);
static const struct drm_driver armada_drm_driver = {
.gem_prime_import = armada_gem_prime_import,
.dumb_create = armada_gem_dumb_create,
.major = 1,
.minor = 0,
.name = "armada-drm",
.desc = "Armada SoC DRM",
.date = "20120730",
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
.ioctls = armada_ioctls,
.num_ioctls = ARRAY_SIZE(armada_ioctls),
.fops = &armada_drm_fops,
};
static const struct drm_mode_config_funcs armada_drm_mode_config_funcs = {
.fb_create = armada_fb_create,
.atomic_check = drm_atomic_helper_check,
.atomic_commit = drm_atomic_helper_commit,
};
static int armada_drm_bind(struct device *dev)
{
struct armada_private *priv;
struct resource *mem = NULL;
int ret, n;
for (n = 0; ; n++) {
struct resource *r = platform_get_resource(to_platform_device(dev),
IORESOURCE_MEM, n);
if (!r)
break;
/* Resources above 64K are graphics memory */
if (resource_size(r) > SZ_64K)
mem = r;
else
return -EINVAL;
}
if (!mem)
return -ENXIO;
if (!devm_request_mem_region(dev, mem->start, resource_size(mem),
"armada-drm"))
return -EBUSY;
priv = devm_drm_dev_alloc(dev, &armada_drm_driver,
struct armada_private, drm);
if (IS_ERR(priv)) {
dev_err(dev, "[" DRM_NAME ":%s] devm_drm_dev_alloc failed: %li\n",
__func__, PTR_ERR(priv));
return PTR_ERR(priv);
}
/* Remove early framebuffers */
ret = drm_aperture_remove_framebuffers(&armada_drm_driver);
if (ret) {
dev_err(dev, "[" DRM_NAME ":%s] can't kick out simple-fb: %d\n",
__func__, ret);
return ret;
}
dev_set_drvdata(dev, &priv->drm);
/* Mode setting support */
drm_mode_config_init(&priv->drm);
priv->drm.mode_config.min_width = 320;
priv->drm.mode_config.min_height = 200;
/*
* With vscale enabled, the maximum width is 1920 due to the
* 1920 by 3 lines RAM
*/
priv->drm.mode_config.max_width = 1920;
priv->drm.mode_config.max_height = 2048;
priv->drm.mode_config.preferred_depth = 24;
priv->drm.mode_config.funcs = &armada_drm_mode_config_funcs;
drm_mm_init(&priv->linear, mem->start, resource_size(mem));
mutex_init(&priv->linear_lock);
ret = component_bind_all(dev, &priv->drm);
if (ret)
goto err_kms;
ret = drm_vblank_init(&priv->drm, priv->drm.mode_config.num_crtc);
if (ret)
goto err_comp;
drm_mode_config_reset(&priv->drm);
drm_kms_helper_poll_init(&priv->drm);
ret = drm_dev_register(&priv->drm, 0);
if (ret)
goto err_poll;
#ifdef CONFIG_DEBUG_FS
armada_drm_debugfs_init(priv->drm.primary);
#endif
armada_fbdev_setup(&priv->drm);
return 0;
err_poll:
drm_kms_helper_poll_fini(&priv->drm);
err_comp:
component_unbind_all(dev, &priv->drm);
err_kms:
drm_mode_config_cleanup(&priv->drm);
drm_mm_takedown(&priv->linear);
dev_set_drvdata(dev, NULL);
return ret;
}
static void armada_drm_unbind(struct device *dev)
{
struct drm_device *drm = dev_get_drvdata(dev);
struct armada_private *priv = drm_to_armada_dev(drm);
drm_kms_helper_poll_fini(&priv->drm);
drm_dev_unregister(&priv->drm);
drm_atomic_helper_shutdown(&priv->drm);
component_unbind_all(dev, &priv->drm);
drm_mode_config_cleanup(&priv->drm);
drm_mm_takedown(&priv->linear);
dev_set_drvdata(dev, NULL);
}
static void armada_add_endpoints(struct device *dev,
struct component_match **match, struct device_node *dev_node)
{
struct device_node *ep, *remote;
for_each_endpoint_of_node(dev_node, ep) {
remote = of_graph_get_remote_port_parent(ep);
if (remote && of_device_is_available(remote))
drm_of_component_match_add(dev, match, component_compare_of,
remote);
of_node_put(remote);
}
}
static const struct component_master_ops armada_master_ops = {
.bind = armada_drm_bind,
.unbind = armada_drm_unbind,
};
static int armada_drm_probe(struct platform_device *pdev)
{
struct component_match *match = NULL;
struct device *dev = &pdev->dev;
int ret;
ret = drm_of_component_probe(dev, component_compare_dev_name, &armada_master_ops);
if (ret != -EINVAL)
return ret;
if (dev->platform_data) {
char **devices = dev->platform_data;
struct device *d;
int i;
for (i = 0; devices[i]; i++)
component_match_add(dev, &match, component_compare_dev_name,
devices[i]);
if (i == 0) {
dev_err(dev, "missing 'ports' property\n");
return -ENODEV;
}
for (i = 0; devices[i]; i++) {
d = bus_find_device_by_name(&platform_bus_type, NULL,
devices[i]);
if (d && d->of_node)
armada_add_endpoints(dev, &match, d->of_node);
put_device(d);
}
}
return component_master_add_with_match(&pdev->dev, &armada_master_ops,
match);
}
static void armada_drm_remove(struct platform_device *pdev)
{
component_master_del(&pdev->dev, &armada_master_ops);
}
static void armada_drm_shutdown(struct platform_device *pdev)
{
drm_atomic_helper_shutdown(platform_get_drvdata(pdev));
}
static const struct platform_device_id armada_drm_platform_ids[] = {
{
.name = "armada-drm",
}, {
.name = "armada-510-drm",
},
{ },
};
MODULE_DEVICE_TABLE(platform, armada_drm_platform_ids);
static struct platform_driver armada_drm_platform_driver = {
.probe = armada_drm_probe,
.remove_new = armada_drm_remove,
.shutdown = armada_drm_shutdown,
.driver = {
.name = "armada-drm",
},
.id_table = armada_drm_platform_ids,
};
static int __init armada_drm_init(void)
{
int ret;
if (drm_firmware_drivers_only())
return -ENODEV;
ret = platform_driver_register(&armada_lcd_platform_driver);
if (ret)
return ret;
ret = platform_driver_register(&armada_drm_platform_driver);
if (ret)
platform_driver_unregister(&armada_lcd_platform_driver);
return ret;
}
module_init(armada_drm_init);
static void __exit armada_drm_exit(void)
{
platform_driver_unregister(&armada_drm_platform_driver);
platform_driver_unregister(&armada_lcd_platform_driver);
}
module_exit(armada_drm_exit);
MODULE_AUTHOR("Russell King <[email protected]>");
MODULE_DESCRIPTION("Armada DRM Driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:armada-drm");
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