300 lines
6.5 KiB
C
300 lines
6.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (C) STMicroelectronics SA 2014
|
|
* Author: Benjamin Gaignard <benjamin.gaignard@st.com> for STMicroelectronics.
|
|
*/
|
|
|
|
#include <linux/component.h>
|
|
#include <linux/dma-mapping.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/of_platform.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_probe_helper.h>
|
|
|
|
#include "sti_drv.h"
|
|
#include "sti_plane.h"
|
|
|
|
#define DRIVER_NAME "sti"
|
|
#define DRIVER_DESC "STMicroelectronics SoC DRM"
|
|
#define DRIVER_DATE "20140601"
|
|
#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;
|
|
|
|
/*
|
|
* set max width and height as default value.
|
|
* this value would be used to check framebuffer size limitation
|
|
* at drm_mode_addfb().
|
|
*/
|
|
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,
|
|
|
|
.debugfs_init = sti_drm_dbg_init,
|
|
|
|
.name = DRIVER_NAME,
|
|
.desc = DRIVER_DESC,
|
|
.date = DRIVER_DATE,
|
|
.major = DRIVER_MAJOR,
|
|
.minor = DRIVER_MINOR,
|
|
};
|
|
|
|
static int sti_init(struct drm_device *ddev)
|
|
{
|
|
struct sti_private *private;
|
|
|
|
private = kzalloc(sizeof(*private), GFP_KERNEL);
|
|
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);
|
|
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_fbdev_dma_setup(ddev, 32);
|
|
|
|
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;
|
|
struct device_node *node = dev->of_node;
|
|
struct device_node *child_np;
|
|
struct component_match *match = NULL;
|
|
|
|
dma_set_coherent_mask(dev, DMA_BIT_MASK(32));
|
|
|
|
devm_of_platform_populate(dev);
|
|
|
|
child_np = of_get_next_available_child(node, NULL);
|
|
|
|
while (child_np) {
|
|
drm_of_component_match_add(dev, &match, component_compare_of,
|
|
child_np);
|
|
child_np = of_get_next_available_child(node, child_np);
|
|
}
|
|
|
|
return component_master_add_with_match(dev, &sti_ops, match);
|
|
}
|
|
|
|
static int sti_platform_remove(struct platform_device *pdev)
|
|
{
|
|
component_master_del(&pdev->dev, &sti_ops);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id sti_dt_ids[] = {
|
|
{ .compatible = "st,sti-display-subsystem", },
|
|
{ /* end node */ },
|
|
};
|
|
MODULE_DEVICE_TABLE(of, sti_dt_ids);
|
|
|
|
static struct platform_driver sti_platform_driver = {
|
|
.probe = sti_platform_probe,
|
|
.remove = sti_platform_remove,
|
|
.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");
|