[mirror_ubuntu-bionic-kernel.git] / drivers / gpu / drm / exynos / exynos_drm_core.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>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

#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_subdrv_probe(struct drm_device *dev,
					struct exynos_drm_subdrv *subdrv)
{
	struct drm_encoder *encoder;
	struct drm_connector *connector;

	DRM_DEBUG_DRIVER("%s\n", __FILE__);

	if (subdrv->probe) {
		int ret;

		/*
		 * 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;
	}

	if (!subdrv->manager)
		return 0;

	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");
		encoder->funcs->destroy(encoder);
		return -EFAULT;
	}

	subdrv->encoder = encoder;
	subdrv->connector = connector;

	return 0;
}

static void exynos_drm_subdrv_remove(struct drm_device *dev,
				      struct exynos_drm_subdrv *subdrv)
{
	DRM_DEBUG_DRIVER("%s\n", __FILE__);

	if (subdrv->remove)
		subdrv->remove(dev);

	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;
	}
}

int exynos_drm_device_register(struct drm_device *dev)
{
	struct exynos_drm_subdrv *subdrv, *n;
	int err;

	DRM_DEBUG_DRIVER("%s\n", __FILE__);

	if (!dev)
		return -EINVAL;

	list_for_each_entry_safe(subdrv, n, &exynos_drm_subdrv_list, list) {
		subdrv->drm_dev = dev;
		err = exynos_drm_subdrv_probe(dev, subdrv);
		if (err) {
			DRM_DEBUG("exynos drm subdrv probe failed.\n");
			list_del(&subdrv->list);
		}
	}

	return 0;
}
EXPORT_SYMBOL_GPL(exynos_drm_device_register);

int exynos_drm_device_unregister(struct drm_device *dev)
{
	struct exynos_drm_subdrv *subdrv;

	DRM_DEBUG_DRIVER("%s\n", __FILE__);

	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);

	return 0;
}
EXPORT_SYMBOL_GPL(exynos_drm_device_unregister);

int exynos_drm_subdrv_register(struct exynos_drm_subdrv *subdrv)
{
	DRM_DEBUG_DRIVER("%s\n", __FILE__);

	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)
{
	DRM_DEBUG_DRIVER("%s\n", __FILE__);

	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);
Commit	Line	Data
1c248b7d ID	1	/* exynos_drm_core.c
	2	*
	3	* Copyright (c) 2011 Samsung Electronics Co., Ltd.
	4	* Author:
	5	* Inki Dae <inki.dae@samsung.com>
	6	* Joonyoung Shim <jy0922.shim@samsung.com>
	7	* Seung-Woo Kim <sw0312.kim@samsung.com>
	8	*
	9	* Permission is hereby granted, free of charge, to any person obtaining a
	10	* copy of this software and associated documentation files (the "Software"),
	11	* to deal in the Software without restriction, including without limitation
	12	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	13	* and/or sell copies of the Software, and to permit persons to whom the
	14	* Software is furnished to do so, subject to the following conditions:
	15	*
	16	* The above copyright notice and this permission notice (including the next
	17	* paragraph) shall be included in all copies or substantial portions of the
	18	* Software.
	19	*
	20	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	21	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	23	* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
	24	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	25	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	26	* OTHER DEALINGS IN THE SOFTWARE.
	27	*/
	28
760285e7	29	#include <drm/drmP.h>
1c248b7d ID	30	#include "exynos_drm_drv.h"
	31	#include "exynos_drm_encoder.h"
	32	#include "exynos_drm_connector.h"
	33	#include "exynos_drm_fbdev.h"
	34
1c248b7d	35	static LIST_HEAD(exynos_drm_subdrv_list);
1c248b7d ID	36
	37	static int exynos_drm_subdrv_probe(struct drm_device *dev,
	38	struct exynos_drm_subdrv *subdrv)
	39	{
	40	struct drm_encoder *encoder;
	41	struct drm_connector *connector;
	42
	43	DRM_DEBUG_DRIVER("%s\n", __FILE__);
	44
	45	if (subdrv->probe) {
	46	int ret;
	47
	48	/*
	49	* this probe callback would be called by sub driver
	50	* after setting of all resources to this sub driver,
	51	* such as clock, irq and register map are done or by load()
	52	* of exynos drm driver.
	53	*
	54	* P.S. note that this driver is considered for modularization.
	55	*/
677e84c1	56	ret = subdrv->probe(dev, subdrv->dev);
1c248b7d ID	57	if (ret)
	58	return ret;
	59	}
	60
677e84c1	61	if (!subdrv->manager)
a31f6ecf JS	62	return 0;
a31f6ecf JS	63
677e84c1 JS	64	subdrv->manager->dev = subdrv->dev;
677e84c1 JS	65
1c248b7d	66	/* create and initialize a encoder for this sub driver. */
677e84c1	67	encoder = exynos_drm_encoder_create(dev, subdrv->manager,
1c248b7d ID	68	(1 << MAX_CRTC) - 1);
	69	if (!encoder) {
	70	DRM_ERROR("failed to create encoder\n");
	71	return -EFAULT;
	72	}
	73
	74	/*
	75	* create and initialize a connector for this sub driver and
	76	* attach the encoder created above to the connector.
	77	*/
	78	connector = exynos_drm_connector_create(dev, encoder);
	79	if (!connector) {
	80	DRM_ERROR("failed to create connector\n");
	81	encoder->funcs->destroy(encoder);
	82	return -EFAULT;
	83	}
	84
	85	subdrv->encoder = encoder;
	86	subdrv->connector = connector;
	87
	88	return 0;
	89	}
	90
	91	static void exynos_drm_subdrv_remove(struct drm_device *dev,
	92	struct exynos_drm_subdrv *subdrv)
	93	{
	94	DRM_DEBUG_DRIVER("%s\n", __FILE__);
	95
	96	if (subdrv->remove)
	97	subdrv->remove(dev);
	98
	99	if (subdrv->encoder) {
	100	struct drm_encoder *encoder = subdrv->encoder;
	101	encoder->funcs->destroy(encoder);
	102	subdrv->encoder = NULL;
	103	}
	104
	105	if (subdrv->connector) {
	106	struct drm_connector *connector = subdrv->connector;
	107	connector->funcs->destroy(connector);
	108	subdrv->connector = NULL;
	109	}
	110	}
	111
	112	int exynos_drm_device_register(struct drm_device *dev)
	113	{
	114	struct exynos_drm_subdrv subdrv, n;
	115	int err;
	116
	117	DRM_DEBUG_DRIVER("%s\n", __FILE__);
	118
	119	if (!dev)
	120	return -EINVAL;
	121
1c248b7d	122	list_for_each_entry_safe(subdrv, n, &exynos_drm_subdrv_list, list) {
132a5b91	123	subdrv->drm_dev = dev;
1c248b7d ID	124	err = exynos_drm_subdrv_probe(dev, subdrv);
	125	if (err) {
	126	DRM_DEBUG("exynos drm subdrv probe failed.\n");
	127	list_del(&subdrv->list);
	128	}
	129	}
	130
1c248b7d ID	131	return 0;
	132	}
	133	EXPORT_SYMBOL_GPL(exynos_drm_device_register);
	134
	135	int exynos_drm_device_unregister(struct drm_device *dev)
	136	{
	137	struct exynos_drm_subdrv *subdrv;
	138
	139	DRM_DEBUG_DRIVER("%s\n", __FILE__);
	140
132a5b91	141	if (!dev) {
1c248b7d ID	142	WARN(1, "Unexpected drm device unregister!\n");
	143	return -EINVAL;
	144	}
	145
1c248b7d ID	146	list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list)
	147	exynos_drm_subdrv_remove(dev, subdrv);
	148
1c248b7d ID	149	return 0;
	150	}
	151	EXPORT_SYMBOL_GPL(exynos_drm_device_unregister);
	152
1c248b7d ID	153	int exynos_drm_subdrv_register(struct exynos_drm_subdrv *subdrv)
1c248b7d ID	154	{
1c248b7d ID	155	DRM_DEBUG_DRIVER("%s\n", __FILE__);
	156
	157	if (!subdrv)
	158	return -EINVAL;
	159
1c248b7d	160	list_add_tail(&subdrv->list, &exynos_drm_subdrv_list);
1c248b7d ID	161
	162	return 0;
	163	}
	164	EXPORT_SYMBOL_GPL(exynos_drm_subdrv_register);
	165
	166	int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *subdrv)
	167	{
1c248b7d ID	168	DRM_DEBUG_DRIVER("%s\n", __FILE__);
1c248b7d ID	169
132a5b91 JS	170	if (!subdrv)
132a5b91 JS	171	return -EINVAL;
1c248b7d	172
132a5b91	173	list_del(&subdrv->list);
1c248b7d	174
132a5b91	175	return 0;
1c248b7d ID	176	}
1c248b7d ID	177	EXPORT_SYMBOL_GPL(exynos_drm_subdrv_unregister);
9084f7b8 JS	178
	179	int exynos_drm_subdrv_open(struct drm_device dev, struct drm_file file)
	180	{
	181	struct exynos_drm_subdrv *subdrv;
	182	int ret;
	183
	184	list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) {
	185	if (subdrv->open) {
677e84c1	186	ret = subdrv->open(dev, subdrv->dev, file);
9084f7b8 JS	187	if (ret)
	188	goto err;
	189	}
	190	}
	191
	192	return 0;
	193
	194	err:
	195	list_for_each_entry_reverse(subdrv, &subdrv->list, list) {
	196	if (subdrv->close)
677e84c1	197	subdrv->close(dev, subdrv->dev, file);
9084f7b8 JS	198	}
	199	return ret;
	200	}
	201	EXPORT_SYMBOL_GPL(exynos_drm_subdrv_open);
	202
	203	void exynos_drm_subdrv_close(struct drm_device dev, struct drm_file file)
	204	{
	205	struct exynos_drm_subdrv *subdrv;
	206
	207	list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) {
	208	if (subdrv->close)
677e84c1	209	subdrv->close(dev, subdrv->dev, file);
9084f7b8 JS	210	}
	211	}
	212	EXPORT_SYMBOL_GPL(exynos_drm_subdrv_close);