225 lines
5.0 KiB
C
225 lines
5.0 KiB
C
/* exynos_drm_core.c
|
|
*
|
|
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
|
|
* Author:
|
|
* 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 <drm/drmP.h>
|
|
#include "exynos_drm_drv.h"
|
|
#include "exynos_drm_encoder.h"
|
|
#include "exynos_drm_connector.h"
|
|
#include "exynos_drm_fbdev.h"
|
|
|
|
static LIST_HEAD(exynos_drm_subdrv_list);
|
|
|
|
static int exynos_drm_create_enc_conn(struct drm_device *dev,
|
|
struct exynos_drm_subdrv *subdrv)
|
|
{
|
|
struct drm_encoder *encoder;
|
|
struct drm_connector *connector;
|
|
int ret;
|
|
|
|
subdrv->manager->dev = subdrv->dev;
|
|
|
|
/* create and initialize a encoder for this sub driver. */
|
|
encoder = exynos_drm_encoder_create(dev, subdrv->manager,
|
|
(1 << MAX_CRTC) - 1);
|
|
if (!encoder) {
|
|
DRM_ERROR("failed to create encoder\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
/*
|
|
* create and initialize a connector for this sub driver and
|
|
* attach the encoder created above to the connector.
|
|
*/
|
|
connector = exynos_drm_connector_create(dev, encoder);
|
|
if (!connector) {
|
|
DRM_ERROR("failed to create connector\n");
|
|
ret = -EFAULT;
|
|
goto err_destroy_encoder;
|
|
}
|
|
|
|
subdrv->encoder = encoder;
|
|
subdrv->connector = connector;
|
|
|
|
return 0;
|
|
|
|
err_destroy_encoder:
|
|
encoder->funcs->destroy(encoder);
|
|
return ret;
|
|
}
|
|
|
|
static void exynos_drm_destroy_enc_conn(struct exynos_drm_subdrv *subdrv)
|
|
{
|
|
if (subdrv->encoder) {
|
|
struct drm_encoder *encoder = subdrv->encoder;
|
|
encoder->funcs->destroy(encoder);
|
|
subdrv->encoder = NULL;
|
|
}
|
|
|
|
if (subdrv->connector) {
|
|
struct drm_connector *connector = subdrv->connector;
|
|
connector->funcs->destroy(connector);
|
|
subdrv->connector = NULL;
|
|
}
|
|
}
|
|
|
|
static int exynos_drm_subdrv_probe(struct drm_device *dev,
|
|
struct exynos_drm_subdrv *subdrv)
|
|
{
|
|
if (subdrv->probe) {
|
|
int ret;
|
|
|
|
subdrv->drm_dev = dev;
|
|
|
|
/*
|
|
* this probe callback would be called by sub driver
|
|
* after setting of all resources to this sub driver,
|
|
* such as clock, irq and register map are done or by load()
|
|
* of exynos drm driver.
|
|
*
|
|
* P.S. note that this driver is considered for modularization.
|
|
*/
|
|
ret = subdrv->probe(dev, subdrv->dev);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void exynos_drm_subdrv_remove(struct drm_device *dev,
|
|
struct exynos_drm_subdrv *subdrv)
|
|
{
|
|
if (subdrv->remove)
|
|
subdrv->remove(dev, subdrv->dev);
|
|
}
|
|
|
|
int exynos_drm_device_register(struct drm_device *dev)
|
|
{
|
|
struct exynos_drm_subdrv *subdrv, *n;
|
|
unsigned int fine_cnt = 0;
|
|
int err;
|
|
|
|
if (!dev)
|
|
return -EINVAL;
|
|
|
|
list_for_each_entry_safe(subdrv, n, &exynos_drm_subdrv_list, list) {
|
|
err = exynos_drm_subdrv_probe(dev, subdrv);
|
|
if (err) {
|
|
DRM_DEBUG("exynos drm subdrv probe failed.\n");
|
|
list_del(&subdrv->list);
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* if manager is null then it means that this sub driver
|
|
* doesn't need encoder and connector.
|
|
*/
|
|
if (!subdrv->manager) {
|
|
fine_cnt++;
|
|
continue;
|
|
}
|
|
|
|
err = exynos_drm_create_enc_conn(dev, subdrv);
|
|
if (err) {
|
|
DRM_DEBUG("failed to create encoder and connector.\n");
|
|
exynos_drm_subdrv_remove(dev, subdrv);
|
|
list_del(&subdrv->list);
|
|
continue;
|
|
}
|
|
|
|
fine_cnt++;
|
|
}
|
|
|
|
if (!fine_cnt)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(exynos_drm_device_register);
|
|
|
|
int exynos_drm_device_unregister(struct drm_device *dev)
|
|
{
|
|
struct exynos_drm_subdrv *subdrv;
|
|
|
|
if (!dev) {
|
|
WARN(1, "Unexpected drm device unregister!\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) {
|
|
exynos_drm_subdrv_remove(dev, subdrv);
|
|
exynos_drm_destroy_enc_conn(subdrv);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(exynos_drm_device_unregister);
|
|
|
|
int exynos_drm_subdrv_register(struct exynos_drm_subdrv *subdrv)
|
|
{
|
|
if (!subdrv)
|
|
return -EINVAL;
|
|
|
|
list_add_tail(&subdrv->list, &exynos_drm_subdrv_list);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(exynos_drm_subdrv_register);
|
|
|
|
int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *subdrv)
|
|
{
|
|
if (!subdrv)
|
|
return -EINVAL;
|
|
|
|
list_del(&subdrv->list);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(exynos_drm_subdrv_unregister);
|
|
|
|
int exynos_drm_subdrv_open(struct drm_device *dev, struct drm_file *file)
|
|
{
|
|
struct exynos_drm_subdrv *subdrv;
|
|
int ret;
|
|
|
|
list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) {
|
|
if (subdrv->open) {
|
|
ret = subdrv->open(dev, subdrv->dev, file);
|
|
if (ret)
|
|
goto err;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
err:
|
|
list_for_each_entry_reverse(subdrv, &subdrv->list, list) {
|
|
if (subdrv->close)
|
|
subdrv->close(dev, subdrv->dev, file);
|
|
}
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(exynos_drm_subdrv_open);
|
|
|
|
void exynos_drm_subdrv_close(struct drm_device *dev, struct drm_file *file)
|
|
{
|
|
struct exynos_drm_subdrv *subdrv;
|
|
|
|
list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) {
|
|
if (subdrv->close)
|
|
subdrv->close(dev, subdrv->dev, file);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL_GPL(exynos_drm_subdrv_close);
|