[deliverable/linux.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 "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 struct drm_device *drm_dev;

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->manager.dev);
		if (ret)
			return ret;
	}

	/* 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;

	drm_dev = dev;

	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);

	drm_dev = NULL;

	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->manager.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->manager.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->manager.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
	29	#include "drmP.h"
	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 ID	35	static LIST_HEAD(exynos_drm_subdrv_list);
	36	static struct drm_device *drm_dev;
	37
	38	static int exynos_drm_subdrv_probe(struct drm_device *dev,
	39	struct exynos_drm_subdrv *subdrv)
	40	{
	41	struct drm_encoder *encoder;
	42	struct drm_connector *connector;
	43
	44	DRM_DEBUG_DRIVER("%s\n", __FILE__);
	45
	46	if (subdrv->probe) {
	47	int ret;
	48
	49	/*
	50	* this probe callback would be called by sub driver
	51	* after setting of all resources to this sub driver,
	52	* such as clock, irq and register map are done or by load()
	53	* of exynos drm driver.
	54	*
	55	* P.S. note that this driver is considered for modularization.
	56	*/
41c24346	57	ret = subdrv->probe(dev, subdrv->manager.dev);
1c248b7d ID	58	if (ret)
	59	return ret;
	60	}
	61
	62	/* create and initialize a encoder for this sub driver. */
	63	encoder = exynos_drm_encoder_create(dev, &subdrv->manager,
	64	(1 << MAX_CRTC) - 1);
	65	if (!encoder) {
	66	DRM_ERROR("failed to create encoder\n");
	67	return -EFAULT;
	68	}
	69
	70	/*
	71	* create and initialize a connector for this sub driver and
	72	* attach the encoder created above to the connector.
	73	*/
	74	connector = exynos_drm_connector_create(dev, encoder);
	75	if (!connector) {
	76	DRM_ERROR("failed to create connector\n");
	77	encoder->funcs->destroy(encoder);
	78	return -EFAULT;
	79	}
	80
	81	subdrv->encoder = encoder;
	82	subdrv->connector = connector;
	83
	84	return 0;
	85	}
	86
	87	static void exynos_drm_subdrv_remove(struct drm_device *dev,
	88	struct exynos_drm_subdrv *subdrv)
	89	{
	90	DRM_DEBUG_DRIVER("%s\n", __FILE__);
	91
	92	if (subdrv->remove)
	93	subdrv->remove(dev);
	94
	95	if (subdrv->encoder) {
	96	struct drm_encoder *encoder = subdrv->encoder;
	97	encoder->funcs->destroy(encoder);
	98	subdrv->encoder = NULL;
	99	}
	100
	101	if (subdrv->connector) {
	102	struct drm_connector *connector = subdrv->connector;
	103	connector->funcs->destroy(connector);
	104	subdrv->connector = NULL;
	105	}
	106	}
	107
	108	int exynos_drm_device_register(struct drm_device *dev)
	109	{
	110	struct exynos_drm_subdrv subdrv, n;
	111	int err;
	112
	113	DRM_DEBUG_DRIVER("%s\n", __FILE__);
	114
	115	if (!dev)
	116	return -EINVAL;
	117
132a5b91	118	drm_dev = dev;
1c248b7d	119
1c248b7d	120	list_for_each_entry_safe(subdrv, n, &exynos_drm_subdrv_list, list) {
132a5b91	121	subdrv->drm_dev = dev;
1c248b7d ID	122	err = exynos_drm_subdrv_probe(dev, subdrv);
	123	if (err) {
	124	DRM_DEBUG("exynos drm subdrv probe failed.\n");
	125	list_del(&subdrv->list);
	126	}
	127	}
	128
1c248b7d ID	129	return 0;
	130	}
	131	EXPORT_SYMBOL_GPL(exynos_drm_device_register);
	132
	133	int exynos_drm_device_unregister(struct drm_device *dev)
	134	{
	135	struct exynos_drm_subdrv *subdrv;
	136
	137	DRM_DEBUG_DRIVER("%s\n", __FILE__);
	138
132a5b91	139	if (!dev) {
1c248b7d ID	140	WARN(1, "Unexpected drm device unregister!\n");
	141	return -EINVAL;
	142	}
	143
1c248b7d ID	144	list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list)
	145	exynos_drm_subdrv_remove(dev, subdrv);
	146
	147	drm_dev = NULL;
1c248b7d ID	148
	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) {
	186	ret = subdrv->open(dev, subdrv->manager.dev, file);
	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)
	197	subdrv->close(dev, subdrv->manager.dev, file);
	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)
	209	subdrv->close(dev, subdrv->manager.dev, file);
	210	}
	211	}
	212	EXPORT_SYMBOL_GPL(exynos_drm_subdrv_close);