#include <linux/component.h>
#include <linux/debugfs.h>
#include <linux/dma-mapping.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <drm/clients/drm_client_setup.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_debugfs.h>
#include <drm/drm_drv.h>
#include <drm/drm_fbdev_dma.h>
#include <drm/drm_gem_dma_helper.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_of.h>
#include <drm/drm_print.h>
#include <drm/drm_probe_helper.h>
#include "sti_drv.h"
#include "sti_plane.h"
#define DRIVER_NAME "sti"
#define DRIVER_DESC "STMicroelectronics SoC DRM"
#define DRIVER_MAJOR 1
#define DRIVER_MINOR 0
#define STI_MAX_FB_HEIGHT 4096
#define STI_MAX_FB_WIDTH 4096
static int sti_drm_fps_get(void *data, u64 *val)
{
struct drm_device *drm_dev = data;
struct drm_plane *p;
unsigned int i = 0;
*val = 0;
list_for_each_entry(p, &drm_dev->mode_config.plane_list, head) {
struct sti_plane *plane = to_sti_plane(p);
*val |= plane->fps_info.output << i;
i++;
}
return 0;
}
static int sti_drm_fps_set(void *data, u64 val)
{
struct drm_device *drm_dev = data;
struct drm_plane *p;
unsigned int i = 0;
list_for_each_entry(p, &drm_dev->mode_config.plane_list, head) {
struct sti_plane *plane = to_sti_plane(p);
memset(&plane->fps_info, 0, sizeof(plane->fps_info));
plane->fps_info.output = (val >> i) & 1;
i++;
}
return 0;
}
DEFINE_SIMPLE_ATTRIBUTE(sti_drm_fps_fops,
sti_drm_fps_get, sti_drm_fps_set, "%llu\n");
static int sti_drm_fps_dbg_show(struct seq_file *s, void *data)
{
struct drm_info_node *node = s->private;
struct drm_device *dev = node->minor->dev;
struct drm_plane *p;
list_for_each_entry(p, &dev->mode_config.plane_list, head) {
struct sti_plane *plane = to_sti_plane(p);
seq_printf(s, "%s%s\n",
plane->fps_info.fps_str,
plane->fps_info.fips_str);
}
return 0;
}
static struct drm_info_list sti_drm_dbg_list[] = {
{"fps_get", sti_drm_fps_dbg_show, 0},
};
static void sti_drm_dbg_init(struct drm_minor *minor)
{
drm_debugfs_create_files(sti_drm_dbg_list,
ARRAY_SIZE(sti_drm_dbg_list),
minor->debugfs_root, minor);
debugfs_create_file("fps_show", S_IRUGO | S_IWUSR, minor->debugfs_root,
minor->dev, &sti_drm_fps_fops);
DRM_INFO("%s: debugfs installed\n", DRIVER_NAME);
}
static const struct drm_mode_config_funcs sti_mode_config_funcs = {
.fb_create = drm_gem_fb_create,
.atomic_check = drm_atomic_helper_check,
.atomic_commit = drm_atomic_helper_commit,
};
static void sti_mode_config_init(struct drm_device *dev)
{
dev->mode_config.min_width = 0;
dev->mode_config.min_height = 0;
dev->mode_config.max_width = STI_MAX_FB_WIDTH;
dev->mode_config.max_height = STI_MAX_FB_HEIGHT;
dev->mode_config.funcs = &sti_mode_config_funcs;
dev->mode_config.normalize_zpos = true;
}
DEFINE_DRM_GEM_DMA_FOPS(sti_driver_fops);
static const struct drm_driver sti_driver = {
.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC,
.fops = &sti_driver_fops,
DRM_GEM_DMA_DRIVER_OPS,
DRM_FBDEV_DMA_DRIVER_OPS,
.debugfs_init = sti_drm_dbg_init,
.name = DRIVER_NAME,
.desc = DRIVER_DESC,
.major = DRIVER_MAJOR,
.minor = DRIVER_MINOR,
};
static int sti_init(struct drm_device *ddev)
{
struct sti_private *private;
private = kzalloc_obj(*private);
if (!private)
return -ENOMEM;
ddev->dev_private = (void *)private;
dev_set_drvdata(ddev->dev, ddev);
private->drm_dev = ddev;
drm_mode_config_init(ddev);
sti_mode_config_init(ddev);
drm_kms_helper_poll_init(ddev);
return 0;
}
static void sti_cleanup(struct drm_device *ddev)
{
struct sti_private *private = ddev->dev_private;
drm_kms_helper_poll_fini(ddev);
drm_atomic_helper_shutdown(ddev);
drm_mode_config_cleanup(ddev);
component_unbind_all(ddev->dev, ddev);
dev_set_drvdata(ddev->dev, NULL);
kfree(private);
ddev->dev_private = NULL;
}
static int sti_bind(struct device *dev)
{
struct drm_device *ddev;
int ret;
ddev = drm_dev_alloc(&sti_driver, dev);
if (IS_ERR(ddev))
return PTR_ERR(ddev);
ret = sti_init(ddev);
if (ret)
goto err_drm_dev_put;
ret = component_bind_all(ddev->dev, ddev);
if (ret)
goto err_cleanup;
ret = drm_dev_register(ddev, 0);
if (ret)
goto err_cleanup;
drm_mode_config_reset(ddev);
drm_client_setup(ddev, NULL);
return 0;
err_cleanup:
sti_cleanup(ddev);
err_drm_dev_put:
drm_dev_put(ddev);
return ret;
}
static void sti_unbind(struct device *dev)
{
struct drm_device *ddev = dev_get_drvdata(dev);
drm_dev_unregister(ddev);
sti_cleanup(ddev);
drm_dev_put(ddev);
}
static const struct component_master_ops sti_ops = {
.bind = sti_bind,
.unbind = sti_unbind,
};
static int sti_platform_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
int ret;
ret = dma_set_coherent_mask(dev, DMA_BIT_MASK(32));
if (ret)
return ret;
devm_of_platform_populate(dev);
return drm_of_component_probe(dev, component_compare_of, &sti_ops);
}
static void sti_platform_remove(struct platform_device *pdev)
{
component_master_del(&pdev->dev, &sti_ops);
}
static void sti_platform_shutdown(struct platform_device *pdev)
{
drm_atomic_helper_shutdown(platform_get_drvdata(pdev));
}
static const struct of_device_id sti_dt_ids[] = {
{ .compatible = "st,sti-display-subsystem", },
{ },
};
MODULE_DEVICE_TABLE(of, sti_dt_ids);
static struct platform_driver sti_platform_driver = {
.probe = sti_platform_probe,
.remove = sti_platform_remove,
.shutdown = sti_platform_shutdown,
.driver = {
.name = DRIVER_NAME,
.of_match_table = sti_dt_ids,
},
};
static struct platform_driver * const drivers[] = {
&sti_tvout_driver,
&sti_hqvdp_driver,
&sti_hdmi_driver,
&sti_hda_driver,
&sti_dvo_driver,
&sti_vtg_driver,
&sti_compositor_driver,
&sti_platform_driver,
};
static int sti_drm_init(void)
{
if (drm_firmware_drivers_only())
return -ENODEV;
return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
}
module_init(sti_drm_init);
static void sti_drm_exit(void)
{
platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
}
module_exit(sti_drm_exit);
MODULE_AUTHOR("Benjamin Gaignard <benjamin.gaignard@st.com>");
MODULE_DESCRIPTION("STMicroelectronics SoC DRM driver");
MODULE_LICENSE("GPL");
