![Mark Yao](/assets/img/avatar_default.png)
This reverts commit 52f5eb6094
.
Rockchip drm can't work with generic drm_of_component_probe now
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
571 lines
14 KiB
C
571 lines
14 KiB
C
/*
|
|
* Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
|
|
* Author:Mark Yao <mark.yao@rock-chips.com>
|
|
*
|
|
* based on exynos_drm_drv.c
|
|
*
|
|
* This software is licensed under the terms of the GNU General Public
|
|
* License version 2, as published by the Free Software Foundation, and
|
|
* may be copied, distributed, and modified under those terms.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
|
|
#include <asm/dma-iommu.h>
|
|
|
|
#include <drm/drmP.h>
|
|
#include <drm/drm_crtc_helper.h>
|
|
#include <drm/drm_fb_helper.h>
|
|
#include <linux/dma-mapping.h>
|
|
#include <linux/pm_runtime.h>
|
|
#include <linux/module.h>
|
|
#include <linux/of_graph.h>
|
|
#include <linux/component.h>
|
|
|
|
#include "rockchip_drm_drv.h"
|
|
#include "rockchip_drm_fb.h"
|
|
#include "rockchip_drm_fbdev.h"
|
|
#include "rockchip_drm_gem.h"
|
|
|
|
#define DRIVER_NAME "rockchip"
|
|
#define DRIVER_DESC "RockChip Soc DRM"
|
|
#define DRIVER_DATE "20140818"
|
|
#define DRIVER_MAJOR 1
|
|
#define DRIVER_MINOR 0
|
|
|
|
/*
|
|
* Attach a (component) device to the shared drm dma mapping from master drm
|
|
* device. This is used by the VOPs to map GEM buffers to a common DMA
|
|
* mapping.
|
|
*/
|
|
int rockchip_drm_dma_attach_device(struct drm_device *drm_dev,
|
|
struct device *dev)
|
|
{
|
|
struct dma_iommu_mapping *mapping = drm_dev->dev->archdata.mapping;
|
|
int ret;
|
|
|
|
ret = dma_set_coherent_mask(dev, DMA_BIT_MASK(32));
|
|
if (ret)
|
|
return ret;
|
|
|
|
dma_set_max_seg_size(dev, DMA_BIT_MASK(32));
|
|
|
|
return arm_iommu_attach_device(dev, mapping);
|
|
}
|
|
EXPORT_SYMBOL_GPL(rockchip_drm_dma_attach_device);
|
|
|
|
void rockchip_drm_dma_detach_device(struct drm_device *drm_dev,
|
|
struct device *dev)
|
|
{
|
|
arm_iommu_detach_device(dev);
|
|
}
|
|
EXPORT_SYMBOL_GPL(rockchip_drm_dma_detach_device);
|
|
|
|
int rockchip_register_crtc_funcs(struct drm_device *dev,
|
|
const struct rockchip_crtc_funcs *crtc_funcs,
|
|
int pipe)
|
|
{
|
|
struct rockchip_drm_private *priv = dev->dev_private;
|
|
|
|
if (pipe > ROCKCHIP_MAX_CRTC)
|
|
return -EINVAL;
|
|
|
|
priv->crtc_funcs[pipe] = crtc_funcs;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(rockchip_register_crtc_funcs);
|
|
|
|
void rockchip_unregister_crtc_funcs(struct drm_device *dev, int pipe)
|
|
{
|
|
struct rockchip_drm_private *priv = dev->dev_private;
|
|
|
|
if (pipe > ROCKCHIP_MAX_CRTC)
|
|
return;
|
|
|
|
priv->crtc_funcs[pipe] = NULL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(rockchip_unregister_crtc_funcs);
|
|
|
|
static struct drm_crtc *rockchip_crtc_from_pipe(struct drm_device *drm,
|
|
int pipe)
|
|
{
|
|
struct drm_crtc *crtc;
|
|
int i = 0;
|
|
|
|
list_for_each_entry(crtc, &drm->mode_config.crtc_list, head)
|
|
if (i++ == pipe)
|
|
return crtc;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int rockchip_drm_crtc_enable_vblank(struct drm_device *dev,
|
|
unsigned int pipe)
|
|
{
|
|
struct rockchip_drm_private *priv = dev->dev_private;
|
|
struct drm_crtc *crtc = rockchip_crtc_from_pipe(dev, pipe);
|
|
|
|
if (crtc && priv->crtc_funcs[pipe] &&
|
|
priv->crtc_funcs[pipe]->enable_vblank)
|
|
return priv->crtc_funcs[pipe]->enable_vblank(crtc);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void rockchip_drm_crtc_disable_vblank(struct drm_device *dev,
|
|
unsigned int pipe)
|
|
{
|
|
struct rockchip_drm_private *priv = dev->dev_private;
|
|
struct drm_crtc *crtc = rockchip_crtc_from_pipe(dev, pipe);
|
|
|
|
if (crtc && priv->crtc_funcs[pipe] &&
|
|
priv->crtc_funcs[pipe]->enable_vblank)
|
|
priv->crtc_funcs[pipe]->disable_vblank(crtc);
|
|
}
|
|
|
|
static int rockchip_drm_load(struct drm_device *drm_dev, unsigned long flags)
|
|
{
|
|
struct rockchip_drm_private *private;
|
|
struct dma_iommu_mapping *mapping;
|
|
struct device *dev = drm_dev->dev;
|
|
struct drm_connector *connector;
|
|
int ret;
|
|
|
|
private = devm_kzalloc(drm_dev->dev, sizeof(*private), GFP_KERNEL);
|
|
if (!private)
|
|
return -ENOMEM;
|
|
|
|
drm_dev->dev_private = private;
|
|
|
|
drm_mode_config_init(drm_dev);
|
|
|
|
rockchip_drm_mode_config_init(drm_dev);
|
|
|
|
dev->dma_parms = devm_kzalloc(dev, sizeof(*dev->dma_parms),
|
|
GFP_KERNEL);
|
|
if (!dev->dma_parms) {
|
|
ret = -ENOMEM;
|
|
goto err_config_cleanup;
|
|
}
|
|
|
|
/* TODO(djkurtz): fetch the mapping start/size from somewhere */
|
|
mapping = arm_iommu_create_mapping(&platform_bus_type, 0x00000000,
|
|
SZ_2G);
|
|
if (IS_ERR(mapping)) {
|
|
ret = PTR_ERR(mapping);
|
|
goto err_config_cleanup;
|
|
}
|
|
|
|
ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
|
|
if (ret)
|
|
goto err_release_mapping;
|
|
|
|
dma_set_max_seg_size(dev, DMA_BIT_MASK(32));
|
|
|
|
ret = arm_iommu_attach_device(dev, mapping);
|
|
if (ret)
|
|
goto err_release_mapping;
|
|
|
|
/* Try to bind all sub drivers. */
|
|
ret = component_bind_all(dev, drm_dev);
|
|
if (ret)
|
|
goto err_detach_device;
|
|
|
|
/*
|
|
* All components are now added, we can publish the connector sysfs
|
|
* entries to userspace. This will generate hotplug events and so
|
|
* userspace will expect to be able to access DRM at this point.
|
|
*/
|
|
list_for_each_entry(connector, &drm_dev->mode_config.connector_list,
|
|
head) {
|
|
ret = drm_connector_register(connector);
|
|
if (ret) {
|
|
dev_err(drm_dev->dev,
|
|
"[CONNECTOR:%d:%s] drm_connector_register failed: %d\n",
|
|
connector->base.id,
|
|
connector->name, ret);
|
|
goto err_unbind;
|
|
}
|
|
}
|
|
|
|
/* init kms poll for handling hpd */
|
|
drm_kms_helper_poll_init(drm_dev);
|
|
|
|
/*
|
|
* enable drm irq mode.
|
|
* - with irq_enabled = true, we can use the vblank feature.
|
|
*/
|
|
drm_dev->irq_enabled = true;
|
|
|
|
ret = drm_vblank_init(drm_dev, ROCKCHIP_MAX_CRTC);
|
|
if (ret)
|
|
goto err_kms_helper_poll_fini;
|
|
|
|
/*
|
|
* with vblank_disable_allowed = true, vblank interrupt will be disabled
|
|
* by drm timer once a current process gives up ownership of
|
|
* vblank event.(after drm_vblank_put function is called)
|
|
*/
|
|
drm_dev->vblank_disable_allowed = true;
|
|
|
|
ret = rockchip_drm_fbdev_init(drm_dev);
|
|
if (ret)
|
|
goto err_vblank_cleanup;
|
|
|
|
return 0;
|
|
err_vblank_cleanup:
|
|
drm_vblank_cleanup(drm_dev);
|
|
err_kms_helper_poll_fini:
|
|
drm_kms_helper_poll_fini(drm_dev);
|
|
err_unbind:
|
|
component_unbind_all(dev, drm_dev);
|
|
err_detach_device:
|
|
arm_iommu_detach_device(dev);
|
|
err_release_mapping:
|
|
arm_iommu_release_mapping(dev->archdata.mapping);
|
|
err_config_cleanup:
|
|
drm_mode_config_cleanup(drm_dev);
|
|
drm_dev->dev_private = NULL;
|
|
return ret;
|
|
}
|
|
|
|
static int rockchip_drm_unload(struct drm_device *drm_dev)
|
|
{
|
|
struct device *dev = drm_dev->dev;
|
|
|
|
rockchip_drm_fbdev_fini(drm_dev);
|
|
drm_vblank_cleanup(drm_dev);
|
|
drm_kms_helper_poll_fini(drm_dev);
|
|
component_unbind_all(dev, drm_dev);
|
|
arm_iommu_detach_device(dev);
|
|
arm_iommu_release_mapping(dev->archdata.mapping);
|
|
drm_mode_config_cleanup(drm_dev);
|
|
drm_dev->dev_private = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void rockchip_drm_lastclose(struct drm_device *dev)
|
|
{
|
|
struct rockchip_drm_private *priv = dev->dev_private;
|
|
|
|
drm_fb_helper_restore_fbdev_mode_unlocked(&priv->fbdev_helper);
|
|
}
|
|
|
|
static const struct file_operations rockchip_drm_driver_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = drm_open,
|
|
.mmap = rockchip_gem_mmap,
|
|
.poll = drm_poll,
|
|
.read = drm_read,
|
|
.unlocked_ioctl = drm_ioctl,
|
|
#ifdef CONFIG_COMPAT
|
|
.compat_ioctl = drm_compat_ioctl,
|
|
#endif
|
|
.release = drm_release,
|
|
};
|
|
|
|
const struct vm_operations_struct rockchip_drm_vm_ops = {
|
|
.open = drm_gem_vm_open,
|
|
.close = drm_gem_vm_close,
|
|
};
|
|
|
|
static struct drm_driver rockchip_drm_driver = {
|
|
.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME,
|
|
.load = rockchip_drm_load,
|
|
.unload = rockchip_drm_unload,
|
|
.lastclose = rockchip_drm_lastclose,
|
|
.get_vblank_counter = drm_vblank_no_hw_counter,
|
|
.enable_vblank = rockchip_drm_crtc_enable_vblank,
|
|
.disable_vblank = rockchip_drm_crtc_disable_vblank,
|
|
.gem_vm_ops = &rockchip_drm_vm_ops,
|
|
.gem_free_object = rockchip_gem_free_object,
|
|
.dumb_create = rockchip_gem_dumb_create,
|
|
.dumb_map_offset = rockchip_gem_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_import = drm_gem_prime_import,
|
|
.gem_prime_export = drm_gem_prime_export,
|
|
.gem_prime_get_sg_table = rockchip_gem_prime_get_sg_table,
|
|
.gem_prime_vmap = rockchip_gem_prime_vmap,
|
|
.gem_prime_vunmap = rockchip_gem_prime_vunmap,
|
|
.gem_prime_mmap = rockchip_gem_mmap_buf,
|
|
.fops = &rockchip_drm_driver_fops,
|
|
.name = DRIVER_NAME,
|
|
.desc = DRIVER_DESC,
|
|
.date = DRIVER_DATE,
|
|
.major = DRIVER_MAJOR,
|
|
.minor = DRIVER_MINOR,
|
|
};
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static int rockchip_drm_sys_suspend(struct device *dev)
|
|
{
|
|
struct drm_device *drm = dev_get_drvdata(dev);
|
|
struct drm_connector *connector;
|
|
|
|
if (!drm)
|
|
return 0;
|
|
|
|
drm_modeset_lock_all(drm);
|
|
list_for_each_entry(connector, &drm->mode_config.connector_list, head) {
|
|
int old_dpms = connector->dpms;
|
|
|
|
if (connector->funcs->dpms)
|
|
connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF);
|
|
|
|
/* Set the old mode back to the connector for resume */
|
|
connector->dpms = old_dpms;
|
|
}
|
|
drm_modeset_unlock_all(drm);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rockchip_drm_sys_resume(struct device *dev)
|
|
{
|
|
struct drm_device *drm = dev_get_drvdata(dev);
|
|
struct drm_connector *connector;
|
|
enum drm_connector_status status;
|
|
bool changed = false;
|
|
|
|
if (!drm)
|
|
return 0;
|
|
|
|
drm_modeset_lock_all(drm);
|
|
list_for_each_entry(connector, &drm->mode_config.connector_list, head) {
|
|
int desired_mode = connector->dpms;
|
|
|
|
/*
|
|
* at suspend time, we save dpms to connector->dpms,
|
|
* restore the old_dpms, and at current time, the connector
|
|
* dpms status must be DRM_MODE_DPMS_OFF.
|
|
*/
|
|
connector->dpms = DRM_MODE_DPMS_OFF;
|
|
|
|
/*
|
|
* If the connector has been disconnected during suspend,
|
|
* disconnect it from the encoder and leave it off. We'll notify
|
|
* userspace at the end.
|
|
*/
|
|
if (desired_mode == DRM_MODE_DPMS_ON) {
|
|
status = connector->funcs->detect(connector, true);
|
|
if (status == connector_status_disconnected) {
|
|
connector->encoder = NULL;
|
|
connector->status = status;
|
|
changed = true;
|
|
continue;
|
|
}
|
|
}
|
|
if (connector->funcs->dpms)
|
|
connector->funcs->dpms(connector, desired_mode);
|
|
}
|
|
drm_modeset_unlock_all(drm);
|
|
|
|
drm_helper_resume_force_mode(drm);
|
|
|
|
if (changed)
|
|
drm_kms_helper_hotplug_event(drm);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static const struct dev_pm_ops rockchip_drm_pm_ops = {
|
|
SET_SYSTEM_SLEEP_PM_OPS(rockchip_drm_sys_suspend,
|
|
rockchip_drm_sys_resume)
|
|
};
|
|
|
|
/*
|
|
* @node: device tree node containing encoder input ports
|
|
* @encoder: drm_encoder
|
|
*/
|
|
int rockchip_drm_encoder_get_mux_id(struct device_node *node,
|
|
struct drm_encoder *encoder)
|
|
{
|
|
struct device_node *ep;
|
|
struct drm_crtc *crtc = encoder->crtc;
|
|
struct of_endpoint endpoint;
|
|
struct device_node *port;
|
|
int ret;
|
|
|
|
if (!node || !crtc)
|
|
return -EINVAL;
|
|
|
|
for_each_endpoint_of_node(node, ep) {
|
|
port = of_graph_get_remote_port(ep);
|
|
of_node_put(port);
|
|
if (port == crtc->port) {
|
|
ret = of_graph_parse_endpoint(ep, &endpoint);
|
|
of_node_put(ep);
|
|
return ret ?: endpoint.id;
|
|
}
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(rockchip_drm_encoder_get_mux_id);
|
|
|
|
static int compare_of(struct device *dev, void *data)
|
|
{
|
|
struct device_node *np = data;
|
|
|
|
return dev->of_node == np;
|
|
}
|
|
|
|
static void rockchip_add_endpoints(struct device *dev,
|
|
struct component_match **match,
|
|
struct device_node *port)
|
|
{
|
|
struct device_node *ep, *remote;
|
|
|
|
for_each_child_of_node(port, ep) {
|
|
remote = of_graph_get_remote_port_parent(ep);
|
|
if (!remote || !of_device_is_available(remote)) {
|
|
of_node_put(remote);
|
|
continue;
|
|
} else if (!of_device_is_available(remote->parent)) {
|
|
dev_warn(dev, "parent device of %s is not available\n",
|
|
remote->full_name);
|
|
of_node_put(remote);
|
|
continue;
|
|
}
|
|
|
|
component_match_add(dev, match, compare_of, remote);
|
|
of_node_put(remote);
|
|
}
|
|
}
|
|
|
|
static int rockchip_drm_bind(struct device *dev)
|
|
{
|
|
struct drm_device *drm;
|
|
int ret;
|
|
|
|
drm = drm_dev_alloc(&rockchip_drm_driver, dev);
|
|
if (!drm)
|
|
return -ENOMEM;
|
|
|
|
ret = drm_dev_set_unique(drm, "%s", dev_name(dev));
|
|
if (ret)
|
|
goto err_free;
|
|
|
|
ret = drm_dev_register(drm, 0);
|
|
if (ret)
|
|
goto err_free;
|
|
|
|
dev_set_drvdata(dev, drm);
|
|
|
|
return 0;
|
|
|
|
err_free:
|
|
drm_dev_unref(drm);
|
|
return ret;
|
|
}
|
|
|
|
static void rockchip_drm_unbind(struct device *dev)
|
|
{
|
|
struct drm_device *drm = dev_get_drvdata(dev);
|
|
|
|
drm_dev_unregister(drm);
|
|
drm_dev_unref(drm);
|
|
dev_set_drvdata(dev, NULL);
|
|
}
|
|
|
|
static const struct component_master_ops rockchip_drm_ops = {
|
|
.bind = rockchip_drm_bind,
|
|
.unbind = rockchip_drm_unbind,
|
|
};
|
|
|
|
static int rockchip_drm_platform_probe(struct platform_device *pdev)
|
|
{
|
|
struct device *dev = &pdev->dev;
|
|
struct component_match *match = NULL;
|
|
struct device_node *np = dev->of_node;
|
|
struct device_node *port;
|
|
int i;
|
|
|
|
if (!np)
|
|
return -ENODEV;
|
|
/*
|
|
* Bind the crtc ports first, so that
|
|
* drm_of_find_possible_crtcs called from encoder .bind callbacks
|
|
* works as expected.
|
|
*/
|
|
for (i = 0;; i++) {
|
|
port = of_parse_phandle(np, "ports", i);
|
|
if (!port)
|
|
break;
|
|
|
|
if (!of_device_is_available(port->parent)) {
|
|
of_node_put(port);
|
|
continue;
|
|
}
|
|
|
|
component_match_add(dev, &match, compare_of, port->parent);
|
|
of_node_put(port);
|
|
}
|
|
|
|
if (i == 0) {
|
|
dev_err(dev, "missing 'ports' property\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (!match) {
|
|
dev_err(dev, "No available vop found for display-subsystem.\n");
|
|
return -ENODEV;
|
|
}
|
|
/*
|
|
* For each bound crtc, bind the encoders attached to its
|
|
* remote endpoint.
|
|
*/
|
|
for (i = 0;; i++) {
|
|
port = of_parse_phandle(np, "ports", i);
|
|
if (!port)
|
|
break;
|
|
|
|
if (!of_device_is_available(port->parent)) {
|
|
of_node_put(port);
|
|
continue;
|
|
}
|
|
|
|
rockchip_add_endpoints(dev, &match, port);
|
|
of_node_put(port);
|
|
}
|
|
|
|
return component_master_add_with_match(dev, &rockchip_drm_ops, match);
|
|
}
|
|
|
|
static int rockchip_drm_platform_remove(struct platform_device *pdev)
|
|
{
|
|
component_master_del(&pdev->dev, &rockchip_drm_ops);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id rockchip_drm_dt_ids[] = {
|
|
{ .compatible = "rockchip,display-subsystem", },
|
|
{ /* sentinel */ },
|
|
};
|
|
MODULE_DEVICE_TABLE(of, rockchip_drm_dt_ids);
|
|
|
|
static struct platform_driver rockchip_drm_platform_driver = {
|
|
.probe = rockchip_drm_platform_probe,
|
|
.remove = rockchip_drm_platform_remove,
|
|
.driver = {
|
|
.name = "rockchip-drm",
|
|
.of_match_table = rockchip_drm_dt_ids,
|
|
.pm = &rockchip_drm_pm_ops,
|
|
},
|
|
};
|
|
|
|
module_platform_driver(rockchip_drm_platform_driver);
|
|
|
|
MODULE_AUTHOR("Mark Yao <mark.yao@rock-chips.com>");
|
|
MODULE_DESCRIPTION("ROCKCHIP DRM Driver");
|
|
MODULE_LICENSE("GPL v2");
|