blob: b599f74692e5c60b79f933fc52f8201ff276e7ea [file] [log] [blame]
/*
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
* Authors:
* Inki Dae <inki.dae@samsung.com>
* Joonyoung Shim <jy0922.shim@samsung.com>
* Seung-Woo Kim <sw0312.kim@samsung.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#include <linux/pm_runtime.h>
#include <drm/drmP.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_helper.h>
#include <linux/component.h>
#include <drm/exynos_drm.h>
#include "exynos_drm_drv.h"
#include "exynos_drm_fbdev.h"
#include "exynos_drm_fb.h"
#include "exynos_drm_gem.h"
#include "exynos_drm_plane.h"
#include "exynos_drm_ipp.h"
#include "exynos_drm_vidi.h"
#include "exynos_drm_g2d.h"
#include "exynos_drm_iommu.h"
#define DRIVER_NAME "exynos"
#define DRIVER_DESC "Samsung SoC DRM"
#define DRIVER_DATE "20180330"
/*
* Interface history:
*
* 1.0 - Original version
* 1.1 - Upgrade IPP driver to version 2.0
*/
#define DRIVER_MAJOR 1
#define DRIVER_MINOR 1
static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
{
struct drm_exynos_file_private *file_priv;
int ret;
file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
if (!file_priv)
return -ENOMEM;
file->driver_priv = file_priv;
ret = g2d_open(dev, file);
if (ret)
goto err_file_priv_free;
return ret;
err_file_priv_free:
kfree(file_priv);
file->driver_priv = NULL;
return ret;
}
static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
{
g2d_close(dev, file);
kfree(file->driver_priv);
file->driver_priv = NULL;
}
static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
.fault = exynos_drm_gem_fault,
.open = drm_gem_vm_open,
.close = drm_gem_vm_close,
};
static const struct drm_ioctl_desc exynos_ioctls[] = {
DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
DRM_AUTH | DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP, exynos_drm_gem_map_ioctl,
DRM_AUTH | DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, exynos_drm_gem_get_ioctl,
DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, vidi_connection_ioctl,
DRM_AUTH),
DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, exynos_g2d_get_ver_ioctl,
DRM_AUTH | DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, exynos_g2d_set_cmdlist_ioctl,
DRM_AUTH | DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, exynos_g2d_exec_ioctl,
DRM_AUTH | DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_RESOURCES,
exynos_drm_ipp_get_res_ioctl,
DRM_AUTH | DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_CAPS, exynos_drm_ipp_get_caps_ioctl,
DRM_AUTH | DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_LIMITS,
exynos_drm_ipp_get_limits_ioctl,
DRM_AUTH | DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(EXYNOS_IPP_COMMIT, exynos_drm_ipp_commit_ioctl,
DRM_AUTH | DRM_RENDER_ALLOW),
};
static const struct file_operations exynos_drm_driver_fops = {
.owner = THIS_MODULE,
.open = drm_open,
.mmap = exynos_drm_gem_mmap,
.poll = drm_poll,
.read = drm_read,
.unlocked_ioctl = drm_ioctl,
.compat_ioctl = drm_compat_ioctl,
.release = drm_release,
};
static struct drm_driver exynos_drm_driver = {
.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME
| DRIVER_ATOMIC | DRIVER_RENDER,
.open = exynos_drm_open,
.lastclose = drm_fb_helper_lastclose,
.postclose = exynos_drm_postclose,
.gem_free_object_unlocked = exynos_drm_gem_free_object,
.gem_vm_ops = &exynos_drm_gem_vm_ops,
.dumb_create = exynos_drm_gem_dumb_create,
.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 = exynos_drm_gem_prime_import,
.gem_prime_get_sg_table = exynos_drm_gem_prime_get_sg_table,
.gem_prime_import_sg_table = exynos_drm_gem_prime_import_sg_table,
.gem_prime_vmap = exynos_drm_gem_prime_vmap,
.gem_prime_vunmap = exynos_drm_gem_prime_vunmap,
.gem_prime_mmap = exynos_drm_gem_prime_mmap,
.ioctls = exynos_ioctls,
.num_ioctls = ARRAY_SIZE(exynos_ioctls),
.fops = &exynos_drm_driver_fops,
.name = DRIVER_NAME,
.desc = DRIVER_DESC,
.date = DRIVER_DATE,
.major = DRIVER_MAJOR,
.minor = DRIVER_MINOR,
};
static int exynos_drm_suspend(struct device *dev)
{
struct drm_device *drm_dev = dev_get_drvdata(dev);
struct exynos_drm_private *private;
if (!drm_dev)
return 0;
private = drm_dev->dev_private;
drm_kms_helper_poll_disable(drm_dev);
exynos_drm_fbdev_suspend(drm_dev);
private->suspend_state = drm_atomic_helper_suspend(drm_dev);
if (IS_ERR(private->suspend_state)) {
exynos_drm_fbdev_resume(drm_dev);
drm_kms_helper_poll_enable(drm_dev);
return PTR_ERR(private->suspend_state);
}
return 0;
}
static void exynos_drm_resume(struct device *dev)
{
struct drm_device *drm_dev = dev_get_drvdata(dev);
struct exynos_drm_private *private;
if (!drm_dev)
return;
private = drm_dev->dev_private;
drm_atomic_helper_resume(drm_dev, private->suspend_state);
exynos_drm_fbdev_resume(drm_dev);
drm_kms_helper_poll_enable(drm_dev);
}
static const struct dev_pm_ops exynos_drm_pm_ops = {
.prepare = exynos_drm_suspend,
.complete = exynos_drm_resume,
};
/* forward declaration */
static struct platform_driver exynos_drm_platform_driver;
struct exynos_drm_driver_info {
struct platform_driver *driver;
unsigned int flags;
};
#define DRM_COMPONENT_DRIVER BIT(0) /* supports component framework */
#define DRM_VIRTUAL_DEVICE BIT(1) /* create virtual platform device */
#define DRM_DMA_DEVICE BIT(2) /* can be used for dma allocations */
#define DRM_FIMC_DEVICE BIT(3) /* devices shared with V4L2 subsystem */
#define DRV_PTR(drv, cond) (IS_ENABLED(cond) ? &drv : NULL)
/*
* Connector drivers should not be placed before associated crtc drivers,
* because connector requires pipe number of its crtc during initialization.
*/
static struct exynos_drm_driver_info exynos_drm_drivers[] = {
{
DRV_PTR(fimd_driver, CONFIG_DRM_EXYNOS_FIMD),
DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
}, {
DRV_PTR(exynos5433_decon_driver, CONFIG_DRM_EXYNOS5433_DECON),
DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
}, {
DRV_PTR(decon_driver, CONFIG_DRM_EXYNOS7_DECON),
DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
}, {
DRV_PTR(mixer_driver, CONFIG_DRM_EXYNOS_MIXER),
DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
}, {
DRV_PTR(mic_driver, CONFIG_DRM_EXYNOS_MIC),
DRM_COMPONENT_DRIVER
}, {
DRV_PTR(dp_driver, CONFIG_DRM_EXYNOS_DP),
DRM_COMPONENT_DRIVER
}, {
DRV_PTR(dsi_driver, CONFIG_DRM_EXYNOS_DSI),
DRM_COMPONENT_DRIVER
}, {
DRV_PTR(hdmi_driver, CONFIG_DRM_EXYNOS_HDMI),
DRM_COMPONENT_DRIVER
}, {
DRV_PTR(vidi_driver, CONFIG_DRM_EXYNOS_VIDI),
DRM_COMPONENT_DRIVER | DRM_VIRTUAL_DEVICE
}, {
DRV_PTR(g2d_driver, CONFIG_DRM_EXYNOS_G2D),
DRM_COMPONENT_DRIVER
}, {
DRV_PTR(fimc_driver, CONFIG_DRM_EXYNOS_FIMC),
DRM_COMPONENT_DRIVER | DRM_FIMC_DEVICE,
}, {
DRV_PTR(rotator_driver, CONFIG_DRM_EXYNOS_ROTATOR),
DRM_COMPONENT_DRIVER
}, {
DRV_PTR(scaler_driver, CONFIG_DRM_EXYNOS_SCALER),
DRM_COMPONENT_DRIVER
}, {
DRV_PTR(gsc_driver, CONFIG_DRM_EXYNOS_GSC),
DRM_COMPONENT_DRIVER
}, {
&exynos_drm_platform_driver,
DRM_VIRTUAL_DEVICE
}
};
static int compare_dev(struct device *dev, void *data)
{
return dev == (struct device *)data;
}
static struct component_match *exynos_drm_match_add(struct device *dev)
{
struct component_match *match = NULL;
int i;
for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
struct device *p = NULL, *d;
if (!info->driver || !(info->flags & DRM_COMPONENT_DRIVER))
continue;
while ((d = bus_find_device(&platform_bus_type, p,
&info->driver->driver,
(void *)platform_bus_type.match))) {
put_device(p);
if (!(info->flags & DRM_FIMC_DEVICE) ||
exynos_drm_check_fimc_device(d) == 0)
component_match_add(dev, &match,
compare_dev, d);
p = d;
}
put_device(p);
}
return match ?: ERR_PTR(-ENODEV);
}
static struct device *exynos_drm_get_dma_device(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
struct device *dev;
if (!info->driver || !(info->flags & DRM_DMA_DEVICE))
continue;
while ((dev = bus_find_device(&platform_bus_type, NULL,
&info->driver->driver,
(void *)platform_bus_type.match))) {
put_device(dev);
return dev;
}
}
return NULL;
}
static int exynos_drm_bind(struct device *dev)
{
struct exynos_drm_private *private;
struct drm_encoder *encoder;
struct drm_device *drm;
unsigned int clone_mask;
int cnt, ret;
drm = drm_dev_alloc(&exynos_drm_driver, dev);
if (IS_ERR(drm))
return PTR_ERR(drm);
private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
if (!private) {
ret = -ENOMEM;
goto err_free_drm;
}
init_waitqueue_head(&private->wait);
spin_lock_init(&private->lock);
dev_set_drvdata(dev, drm);
drm->dev_private = (void *)private;
/* the first real CRTC device is used for all dma mapping operations */
private->dma_dev = exynos_drm_get_dma_device();
if (!private->dma_dev) {
DRM_ERROR("no device found for DMA mapping operations.\n");
ret = -ENODEV;
goto err_free_private;
}
DRM_INFO("Exynos DRM: using %s device for DMA mapping operations\n",
dev_name(private->dma_dev));
/* create common IOMMU mapping for all devices attached to Exynos DRM */
ret = drm_create_iommu_mapping(drm);
if (ret < 0) {
DRM_ERROR("failed to create iommu mapping.\n");
goto err_free_private;
}
drm_mode_config_init(drm);
exynos_drm_mode_config_init(drm);
/* setup possible_clones. */
cnt = 0;
clone_mask = 0;
list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
clone_mask |= (1 << (cnt++));
list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
encoder->possible_clones = clone_mask;
/* Try to bind all sub drivers. */
ret = component_bind_all(drm->dev, drm);
if (ret)
goto err_mode_config_cleanup;
ret = drm_vblank_init(drm, drm->mode_config.num_crtc);
if (ret)
goto err_unbind_all;
drm_mode_config_reset(drm);
/*
* enable drm irq mode.
* - with irq_enabled = true, we can use the vblank feature.
*
* P.S. note that we wouldn't use drm irq handler but
* just specific driver own one instead because
* drm framework supports only one irq handler.
*/
drm->irq_enabled = true;
/* init kms poll for handling hpd */
drm_kms_helper_poll_init(drm);
ret = exynos_drm_fbdev_init(drm);
if (ret)
goto err_cleanup_poll;
/* register the DRM device */
ret = drm_dev_register(drm, 0);
if (ret < 0)
goto err_cleanup_fbdev;
return 0;
err_cleanup_fbdev:
exynos_drm_fbdev_fini(drm);
err_cleanup_poll:
drm_kms_helper_poll_fini(drm);
err_unbind_all:
component_unbind_all(drm->dev, drm);
err_mode_config_cleanup:
drm_mode_config_cleanup(drm);
drm_release_iommu_mapping(drm);
err_free_private:
kfree(private);
err_free_drm:
drm_dev_put(drm);
return ret;
}
static void exynos_drm_unbind(struct device *dev)
{
struct drm_device *drm = dev_get_drvdata(dev);
drm_dev_unregister(drm);
exynos_drm_fbdev_fini(drm);
drm_kms_helper_poll_fini(drm);
component_unbind_all(drm->dev, drm);
drm_mode_config_cleanup(drm);
drm_release_iommu_mapping(drm);
kfree(drm->dev_private);
drm->dev_private = NULL;
dev_set_drvdata(dev, NULL);
drm_dev_put(drm);
}
static const struct component_master_ops exynos_drm_ops = {
.bind = exynos_drm_bind,
.unbind = exynos_drm_unbind,
};
static int exynos_drm_platform_probe(struct platform_device *pdev)
{
struct component_match *match;
pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
match = exynos_drm_match_add(&pdev->dev);
if (IS_ERR(match))
return PTR_ERR(match);
return component_master_add_with_match(&pdev->dev, &exynos_drm_ops,
match);
}
static int exynos_drm_platform_remove(struct platform_device *pdev)
{
component_master_del(&pdev->dev, &exynos_drm_ops);
return 0;
}
static struct platform_driver exynos_drm_platform_driver = {
.probe = exynos_drm_platform_probe,
.remove = exynos_drm_platform_remove,
.driver = {
.name = "exynos-drm",
.pm = &exynos_drm_pm_ops,
},
};
static void exynos_drm_unregister_devices(void)
{
int i;
for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
struct device *dev;
if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
continue;
while ((dev = bus_find_device(&platform_bus_type, NULL,
&info->driver->driver,
(void *)platform_bus_type.match))) {
put_device(dev);
platform_device_unregister(to_platform_device(dev));
}
}
}
static int exynos_drm_register_devices(void)
{
struct platform_device *pdev;
int i;
for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
continue;
pdev = platform_device_register_simple(
info->driver->driver.name, -1, NULL, 0);
if (IS_ERR(pdev))
goto fail;
}
return 0;
fail:
exynos_drm_unregister_devices();
return PTR_ERR(pdev);
}
static void exynos_drm_unregister_drivers(void)
{
int i;
for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
if (!info->driver)
continue;
platform_driver_unregister(info->driver);
}
}
static int exynos_drm_register_drivers(void)
{
int i, ret;
for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
if (!info->driver)
continue;
ret = platform_driver_register(info->driver);
if (ret)
goto fail;
}
return 0;
fail:
exynos_drm_unregister_drivers();
return ret;
}
static int exynos_drm_init(void)
{
int ret;
ret = exynos_drm_register_devices();
if (ret)
return ret;
ret = exynos_drm_register_drivers();
if (ret)
goto err_unregister_pdevs;
return 0;
err_unregister_pdevs:
exynos_drm_unregister_devices();
return ret;
}
static void exynos_drm_exit(void)
{
exynos_drm_unregister_drivers();
exynos_drm_unregister_devices();
}
module_init(exynos_drm_init);
module_exit(exynos_drm_exit);
MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
MODULE_DESCRIPTION("Samsung SoC DRM Driver");
MODULE_LICENSE("GPL");