[linux-2.6-block.git] / drivers / gpu / drm / exynos / exynos_drm_connector.c

/*
 * 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 <drm/drmP.h>
#include <drm/drm_crtc_helper.h>

#include <drm/exynos_drm.h>
#include "exynos_drm_drv.h"
#include "exynos_drm_encoder.h"

#define MAX_EDID 256
#define to_exynos_connector(x)	container_of(x, struct exynos_drm_connector,\
				drm_connector)

struct exynos_drm_connector {
	struct drm_connector	drm_connector;
	uint32_t		encoder_id;
	struct exynos_drm_manager *manager;
	uint32_t		dpms;
};

/* convert exynos_video_timings to drm_display_mode */
static inline void
convert_to_display_mode(struct drm_display_mode *mode,
			struct exynos_drm_panel_info *panel)
{
	struct fb_videomode *timing = &panel->timing;
	DRM_DEBUG_KMS("%s\n", __FILE__);

	mode->clock = timing->pixclock / 1000;
	mode->vrefresh = timing->refresh;

	mode->hdisplay = timing->xres;
	mode->hsync_start = mode->hdisplay + timing->right_margin;
	mode->hsync_end = mode->hsync_start + timing->hsync_len;
	mode->htotal = mode->hsync_end + timing->left_margin;

	mode->vdisplay = timing->yres;
	mode->vsync_start = mode->vdisplay + timing->lower_margin;
	mode->vsync_end = mode->vsync_start + timing->vsync_len;
	mode->vtotal = mode->vsync_end + timing->upper_margin;
	mode->width_mm = panel->width_mm;
	mode->height_mm = panel->height_mm;

	if (timing->vmode & FB_VMODE_INTERLACED)
		mode->flags |= DRM_MODE_FLAG_INTERLACE;

	if (timing->vmode & FB_VMODE_DOUBLE)
		mode->flags |= DRM_MODE_FLAG_DBLSCAN;
}

/* convert drm_display_mode to exynos_video_timings */
static inline void
convert_to_video_timing(struct fb_videomode *timing,
			struct drm_display_mode *mode)
{
	DRM_DEBUG_KMS("%s\n", __FILE__);

	memset(timing, 0, sizeof(*timing));

	timing->pixclock = mode->clock * 1000;
	timing->refresh = drm_mode_vrefresh(mode);

	timing->xres = mode->hdisplay;
	timing->right_margin = mode->hsync_start - mode->hdisplay;
	timing->hsync_len = mode->hsync_end - mode->hsync_start;
	timing->left_margin = mode->htotal - mode->hsync_end;

	timing->yres = mode->vdisplay;
	timing->lower_margin = mode->vsync_start - mode->vdisplay;
	timing->vsync_len = mode->vsync_end - mode->vsync_start;
	timing->upper_margin = mode->vtotal - mode->vsync_end;

	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
		timing->vmode = FB_VMODE_INTERLACED;
	else
		timing->vmode = FB_VMODE_NONINTERLACED;

	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
		timing->vmode |= FB_VMODE_DOUBLE;
}

static int exynos_drm_connector_get_modes(struct drm_connector *connector)
{
	struct exynos_drm_connector *exynos_connector =
					to_exynos_connector(connector);
	struct exynos_drm_manager *manager = exynos_connector->manager;
	struct exynos_drm_display_ops *display_ops = manager->display_ops;
	unsigned int count;

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

	if (!display_ops) {
		DRM_DEBUG_KMS("display_ops is null.\n");
		return 0;
	}

	/*
	 * if get_edid() exists then get_edid() callback of hdmi side
	 * is called to get edid data through i2c interface else
	 * get timing from the FIMD driver(display controller).
	 *
	 * P.S. in case of lcd panel, count is always 1 if success
	 * because lcd panel has only one mode.
	 */
	if (display_ops->get_edid) {
		int ret;
		void *edid;

		edid = kzalloc(MAX_EDID, GFP_KERNEL);
		if (!edid) {
			DRM_ERROR("failed to allocate edid\n");
			return 0;
		}

		ret = display_ops->get_edid(manager->dev, connector,
						edid, MAX_EDID);
		if (ret < 0) {
			DRM_ERROR("failed to get edid data.\n");
			kfree(edid);
			edid = NULL;
			return 0;
		}

		drm_mode_connector_update_edid_property(connector, edid);
		count = drm_add_edid_modes(connector, edid);
		kfree(edid);
	} else {
		struct exynos_drm_panel_info *panel;
		struct drm_display_mode *mode = drm_mode_create(connector->dev);
		if (!mode) {
			DRM_ERROR("failed to create a new display mode.\n");
			return 0;
		}

		if (display_ops->get_panel)
			panel = display_ops->get_panel(manager->dev);
		else {
			drm_mode_destroy(connector->dev, mode);
			return 0;
		}

		convert_to_display_mode(mode, panel);
		connector->display_info.width_mm = mode->width_mm;
		connector->display_info.height_mm = mode->height_mm;

		mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
		drm_mode_set_name(mode);
		drm_mode_probed_add(connector, mode);

		count = 1;
	}

	return count;
}

static int exynos_drm_connector_mode_valid(struct drm_connector *connector,
					    struct drm_display_mode *mode)
{
	struct exynos_drm_connector *exynos_connector =
					to_exynos_connector(connector);
	struct exynos_drm_manager *manager = exynos_connector->manager;
	struct exynos_drm_display_ops *display_ops = manager->display_ops;
	struct fb_videomode timing;
	int ret = MODE_BAD;

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

	convert_to_video_timing(&timing, mode);

	if (display_ops && display_ops->check_timing)
		if (!display_ops->check_timing(manager->dev, (void *)&timing))
			ret = MODE_OK;

	return ret;
}

struct drm_encoder *exynos_drm_best_encoder(struct drm_connector *connector)
{
	struct drm_device *dev = connector->dev;
	struct exynos_drm_connector *exynos_connector =
					to_exynos_connector(connector);
	struct drm_mode_object *obj;
	struct drm_encoder *encoder;

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

	obj = drm_mode_object_find(dev, exynos_connector->encoder_id,
				   DRM_MODE_OBJECT_ENCODER);
	if (!obj) {
		DRM_DEBUG_KMS("Unknown ENCODER ID %d\n",
				exynos_connector->encoder_id);
		return NULL;
	}

	encoder = obj_to_encoder(obj);

	return encoder;
}

static struct drm_connector_helper_funcs exynos_connector_helper_funcs = {
	.get_modes	= exynos_drm_connector_get_modes,
	.mode_valid	= exynos_drm_connector_mode_valid,
	.best_encoder	= exynos_drm_best_encoder,
};

void exynos_drm_display_power(struct drm_connector *connector, int mode)
{
	struct drm_encoder *encoder = exynos_drm_best_encoder(connector);
	struct exynos_drm_connector *exynos_connector;
	struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder);
	struct exynos_drm_display_ops *display_ops = manager->display_ops;

	exynos_connector = to_exynos_connector(connector);

	if (exynos_connector->dpms == mode) {
		DRM_DEBUG_KMS("desired dpms mode is same as previous one.\n");
		return;
	}

	if (display_ops && display_ops->power_on)
		display_ops->power_on(manager->dev, mode);

	exynos_connector->dpms = mode;
}

static void exynos_drm_connector_dpms(struct drm_connector *connector,
					int mode)
{
	DRM_DEBUG_KMS("%s\n", __FILE__);

	/*
	 * in case that drm_crtc_helper_set_mode() is called,
	 * encoder/crtc->funcs->dpms() will be just returned
	 * because they already were DRM_MODE_DPMS_ON so only
	 * exynos_drm_display_power() will be called.
	 */
	drm_helper_connector_dpms(connector, mode);

	exynos_drm_display_power(connector, mode);

}

static int exynos_drm_connector_fill_modes(struct drm_connector *connector,
				unsigned int max_width, unsigned int max_height)
{
	struct exynos_drm_connector *exynos_connector =
					to_exynos_connector(connector);
	struct exynos_drm_manager *manager = exynos_connector->manager;
	struct exynos_drm_manager_ops *ops = manager->ops;
	unsigned int width, height;

	width = max_width;
	height = max_height;

	/*
	 * if specific driver want to find desired_mode using maxmum
	 * resolution then get max width and height from that driver.
	 */
	if (ops && ops->get_max_resol)
		ops->get_max_resol(manager->dev, &width, &height);

	return drm_helper_probe_single_connector_modes(connector, width,
							height);
}

/* get detection status of display device. */
static enum drm_connector_status
exynos_drm_connector_detect(struct drm_connector *connector, bool force)
{
	struct exynos_drm_connector *exynos_connector =
					to_exynos_connector(connector);
	struct exynos_drm_manager *manager = exynos_connector->manager;
	struct exynos_drm_display_ops *display_ops =
					manager->display_ops;
	enum drm_connector_status status = connector_status_disconnected;

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

	if (display_ops && display_ops->is_connected) {
		if (display_ops->is_connected(manager->dev))
			status = connector_status_connected;
		else
			status = connector_status_disconnected;
	}

	return status;
}

static void exynos_drm_connector_destroy(struct drm_connector *connector)
{
	struct exynos_drm_connector *exynos_connector =
		to_exynos_connector(connector);

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

	drm_sysfs_connector_remove(connector);
	drm_connector_cleanup(connector);
	kfree(exynos_connector);
}

static struct drm_connector_funcs exynos_connector_funcs = {
	.dpms		= exynos_drm_connector_dpms,
	.fill_modes	= exynos_drm_connector_fill_modes,
	.detect		= exynos_drm_connector_detect,
	.destroy	= exynos_drm_connector_destroy,
};

struct drm_connector *exynos_drm_connector_create(struct drm_device *dev,
						   struct drm_encoder *encoder)
{
	struct exynos_drm_connector *exynos_connector;
	struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder);
	struct drm_connector *connector;
	int type;
	int err;

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

	exynos_connector = kzalloc(sizeof(*exynos_connector), GFP_KERNEL);
	if (!exynos_connector) {
		DRM_ERROR("failed to allocate connector\n");
		return NULL;
	}

	connector = &exynos_connector->drm_connector;

	switch (manager->display_ops->type) {
	case EXYNOS_DISPLAY_TYPE_HDMI:
		type = DRM_MODE_CONNECTOR_HDMIA;
		connector->interlace_allowed = true;
		connector->polled = DRM_CONNECTOR_POLL_HPD;
		break;
	case EXYNOS_DISPLAY_TYPE_VIDI:
		type = DRM_MODE_CONNECTOR_VIRTUAL;
		connector->polled = DRM_CONNECTOR_POLL_HPD;
		break;
	default:
		type = DRM_MODE_CONNECTOR_Unknown;
		break;
	}

	drm_connector_init(dev, connector, &exynos_connector_funcs, type);
	drm_connector_helper_add(connector, &exynos_connector_helper_funcs);

	err = drm_sysfs_connector_add(connector);
	if (err)
		goto err_connector;

	exynos_connector->encoder_id = encoder->base.id;
	exynos_connector->manager = manager;
	exynos_connector->dpms = DRM_MODE_DPMS_OFF;
	connector->dpms = DRM_MODE_DPMS_OFF;
	connector->encoder = encoder;

	err = drm_mode_connector_attach_encoder(connector, encoder);
	if (err) {
		DRM_ERROR("failed to attach a connector to a encoder\n");
		goto err_sysfs;
	}

	DRM_DEBUG_KMS("connector has been created\n");

	return connector;

err_sysfs:
	drm_sysfs_connector_remove(connector);
err_connector:
	drm_connector_cleanup(connector);
	kfree(exynos_connector);
	return NULL;
}
Commit	Line	Data
1c248b7d ID	1	/*
	2	* Copyright (c) 2011 Samsung Electronics Co., Ltd.
	3	* Authors:
	4	* Inki Dae <inki.dae@samsung.com>
	5	* Joonyoung Shim <jy0922.shim@samsung.com>
	6	* Seung-Woo Kim <sw0312.kim@samsung.com>
	7	*
d81aecb5 ID	8	* This program is free software; you can redistribute it and/or modify it
	9	* under the terms of the GNU General Public License as published by the
	10	* Free Software Foundation; either version 2 of the License, or (at your
	11	* option) any later version.
1c248b7d ID	12	*/
1c248b7d ID	13
760285e7 DH	14	#include <drm/drmP.h>
760285e7 DH	15	#include <drm/drm_crtc_helper.h>
1c248b7d	16
607c50d4	17	#include <drm/exynos_drm.h>
1c248b7d ID	18	#include "exynos_drm_drv.h"
	19	#include "exynos_drm_encoder.h"
	20
	21	#define MAX_EDID 256
	22	#define to_exynos_connector(x) container_of(x, struct exynos_drm_connector,\
	23	drm_connector)
	24
	25	struct exynos_drm_connector {
	26	struct drm_connector drm_connector;
adb6b159 ID	27	uint32_t encoder_id;
adb6b159 ID	28	struct exynos_drm_manager *manager;
50caf25c	29	uint32_t dpms;
1c248b7d ID	30	};
	31
	32	/* convert exynos_video_timings to drm_display_mode */
	33	static inline void
	34	convert_to_display_mode(struct drm_display_mode *mode,
607c50d4	35	struct exynos_drm_panel_info *panel)
1c248b7d	36	{
607c50d4	37	struct fb_videomode *timing = &panel->timing;
1c248b7d ID	38	DRM_DEBUG_KMS("%s\n", __FILE__);
	39
	40	mode->clock = timing->pixclock / 1000;
8b58dfe0	41	mode->vrefresh = timing->refresh;
1c248b7d ID	42
1c248b7d ID	43	mode->hdisplay = timing->xres;
f7d86075	44	mode->hsync_start = mode->hdisplay + timing->right_margin;
1c248b7d	45	mode->hsync_end = mode->hsync_start + timing->hsync_len;
f7d86075	46	mode->htotal = mode->hsync_end + timing->left_margin;
1c248b7d ID	47
1c248b7d ID	48	mode->vdisplay = timing->yres;
f7d86075	49	mode->vsync_start = mode->vdisplay + timing->lower_margin;
1c248b7d	50	mode->vsync_end = mode->vsync_start + timing->vsync_len;
f7d86075	51	mode->vtotal = mode->vsync_end + timing->upper_margin;
607c50d4 ECK	52	mode->width_mm = panel->width_mm;
607c50d4 ECK	53	mode->height_mm = panel->height_mm;
8b58dfe0 SWK	54
	55	if (timing->vmode & FB_VMODE_INTERLACED)
	56	mode->flags \|= DRM_MODE_FLAG_INTERLACE;
	57
	58	if (timing->vmode & FB_VMODE_DOUBLE)
	59	mode->flags \|= DRM_MODE_FLAG_DBLSCAN;
1c248b7d ID	60	}
	61
	62	/* convert drm_display_mode to exynos_video_timings */
	63	static inline void
	64	convert_to_video_timing(struct fb_videomode *timing,
	65	struct drm_display_mode *mode)
	66	{
	67	DRM_DEBUG_KMS("%s\n", __FILE__);
	68
	69	memset(timing, 0, sizeof(*timing));
	70
	71	timing->pixclock = mode->clock * 1000;
8b58dfe0	72	timing->refresh = drm_mode_vrefresh(mode);
1c248b7d ID	73
1c248b7d ID	74	timing->xres = mode->hdisplay;
f7d86075	75	timing->right_margin = mode->hsync_start - mode->hdisplay;
1c248b7d	76	timing->hsync_len = mode->hsync_end - mode->hsync_start;
f7d86075	77	timing->left_margin = mode->htotal - mode->hsync_end;
1c248b7d ID	78
1c248b7d ID	79	timing->yres = mode->vdisplay;
f7d86075	80	timing->lower_margin = mode->vsync_start - mode->vdisplay;
1c248b7d	81	timing->vsync_len = mode->vsync_end - mode->vsync_start;
f7d86075	82	timing->upper_margin = mode->vtotal - mode->vsync_end;
1c248b7d ID	83
	84	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
	85	timing->vmode = FB_VMODE_INTERLACED;
	86	else
	87	timing->vmode = FB_VMODE_NONINTERLACED;
	88
	89	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
	90	timing->vmode \|= FB_VMODE_DOUBLE;
	91	}
	92
	93	static int exynos_drm_connector_get_modes(struct drm_connector *connector)
	94	{
adb6b159 ID	95	struct exynos_drm_connector *exynos_connector =
	96	to_exynos_connector(connector);
	97	struct exynos_drm_manager *manager = exynos_connector->manager;
74ccc539	98	struct exynos_drm_display_ops *display_ops = manager->display_ops;
1c248b7d ID	99	unsigned int count;
	100
	101	DRM_DEBUG_KMS("%s\n", __FILE__);
	102
74ccc539 ID	103	if (!display_ops) {
74ccc539 ID	104	DRM_DEBUG_KMS("display_ops is null.\n");
1c248b7d ID	105	return 0;
	106	}
	107
	108	/*
	109	* if get_edid() exists then get_edid() callback of hdmi side
	110	* is called to get edid data through i2c interface else
	111	* get timing from the FIMD driver(display controller).
	112	*
	113	* P.S. in case of lcd panel, count is always 1 if success
	114	* because lcd panel has only one mode.
	115	*/
74ccc539	116	if (display_ops->get_edid) {
1c248b7d ID	117	int ret;
	118	void *edid;
	119
	120	edid = kzalloc(MAX_EDID, GFP_KERNEL);
	121	if (!edid) {
	122	DRM_ERROR("failed to allocate edid\n");
	123	return 0;
	124	}
	125
74ccc539	126	ret = display_ops->get_edid(manager->dev, connector,
1c248b7d ID	127	edid, MAX_EDID);
	128	if (ret < 0) {
	129	DRM_ERROR("failed to get edid data.\n");
	130	kfree(edid);
	131	edid = NULL;
	132	return 0;
	133	}
	134
	135	drm_mode_connector_update_edid_property(connector, edid);
	136	count = drm_add_edid_modes(connector, edid);
451023dc	137	kfree(edid);
1c248b7d	138	} else {
607c50d4	139	struct exynos_drm_panel_info *panel;
53bd5556 SK	140	struct drm_display_mode *mode = drm_mode_create(connector->dev);
	141	if (!mode) {
	142	DRM_ERROR("failed to create a new display mode.\n");
	143	return 0;
	144	}
1c248b7d	145
607c50d4 ECK	146	if (display_ops->get_panel)
607c50d4 ECK	147	panel = display_ops->get_panel(manager->dev);
1c248b7d ID	148	else {
	149	drm_mode_destroy(connector->dev, mode);
	150	return 0;
	151	}
	152
607c50d4 ECK	153	convert_to_display_mode(mode, panel);
	154	connector->display_info.width_mm = mode->width_mm;
	155	connector->display_info.height_mm = mode->height_mm;
1c248b7d ID	156
	157	mode->type = DRM_MODE_TYPE_DRIVER \| DRM_MODE_TYPE_PREFERRED;
	158	drm_mode_set_name(mode);
	159	drm_mode_probed_add(connector, mode);
	160
	161	count = 1;
	162	}
	163
	164	return count;
	165	}
	166
	167	static int exynos_drm_connector_mode_valid(struct drm_connector *connector,
	168	struct drm_display_mode *mode)
	169	{
adb6b159 ID	170	struct exynos_drm_connector *exynos_connector =
	171	to_exynos_connector(connector);
	172	struct exynos_drm_manager *manager = exynos_connector->manager;
74ccc539	173	struct exynos_drm_display_ops *display_ops = manager->display_ops;
1c248b7d ID	174	struct fb_videomode timing;
	175	int ret = MODE_BAD;
	176
	177	DRM_DEBUG_KMS("%s\n", __FILE__);
	178
	179	convert_to_video_timing(&timing, mode);
	180
74ccc539 ID	181	if (display_ops && display_ops->check_timing)
74ccc539 ID	182	if (!display_ops->check_timing(manager->dev, (void *)&timing))
1c248b7d ID	183	ret = MODE_OK;
	184
	185	return ret;
	186	}
	187
58f6aad7	188	struct drm_encoder exynos_drm_best_encoder(struct drm_connector connector)
1c248b7d	189	{
adb6b159 ID	190	struct drm_device *dev = connector->dev;
	191	struct exynos_drm_connector *exynos_connector =
	192	to_exynos_connector(connector);
	193	struct drm_mode_object *obj;
	194	struct drm_encoder *encoder;
	195
1c248b7d ID	196	DRM_DEBUG_KMS("%s\n", __FILE__);
1c248b7d ID	197
adb6b159 ID	198	obj = drm_mode_object_find(dev, exynos_connector->encoder_id,
	199	DRM_MODE_OBJECT_ENCODER);
	200	if (!obj) {
	201	DRM_DEBUG_KMS("Unknown ENCODER ID %d\n",
	202	exynos_connector->encoder_id);
	203	return NULL;
	204	}
	205
	206	encoder = obj_to_encoder(obj);
	207
	208	return encoder;
1c248b7d ID	209	}
	210
	211	static struct drm_connector_helper_funcs exynos_connector_helper_funcs = {
	212	.get_modes = exynos_drm_connector_get_modes,
	213	.mode_valid = exynos_drm_connector_mode_valid,
	214	.best_encoder = exynos_drm_best_encoder,
	215	};
	216
50caf25c ID	217	void exynos_drm_display_power(struct drm_connector *connector, int mode)
50caf25c ID	218	{
58f6aad7	219	struct drm_encoder *encoder = exynos_drm_best_encoder(connector);
50caf25c ID	220	struct exynos_drm_connector *exynos_connector;
	221	struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder);
	222	struct exynos_drm_display_ops *display_ops = manager->display_ops;
	223
	224	exynos_connector = to_exynos_connector(connector);
	225
	226	if (exynos_connector->dpms == mode) {
	227	DRM_DEBUG_KMS("desired dpms mode is same as previous one.\n");
	228	return;
	229	}
	230
	231	if (display_ops && display_ops->power_on)
	232	display_ops->power_on(manager->dev, mode);
	233
	234	exynos_connector->dpms = mode;
	235	}
	236
	237	static void exynos_drm_connector_dpms(struct drm_connector *connector,
	238	int mode)
	239	{
	240	DRM_DEBUG_KMS("%s\n", __FILE__);
	241
	242	/*
	243	* in case that drm_crtc_helper_set_mode() is called,
	244	* encoder/crtc->funcs->dpms() will be just returned
	245	* because they already were DRM_MODE_DPMS_ON so only
	246	* exynos_drm_display_power() will be called.
	247	*/
	248	drm_helper_connector_dpms(connector, mode);
	249
	250	exynos_drm_display_power(connector, mode);
	251
	252	}
	253
1de425b0 ID	254	static int exynos_drm_connector_fill_modes(struct drm_connector *connector,
	255	unsigned int max_width, unsigned int max_height)
	256	{
	257	struct exynos_drm_connector *exynos_connector =
	258	to_exynos_connector(connector);
	259	struct exynos_drm_manager *manager = exynos_connector->manager;
	260	struct exynos_drm_manager_ops *ops = manager->ops;
	261	unsigned int width, height;
	262
	263	width = max_width;
	264	height = max_height;
	265
	266	/*
	267	* if specific driver want to find desired_mode using maxmum
	268	* resolution then get max width and height from that driver.
	269	*/
	270	if (ops && ops->get_max_resol)
	271	ops->get_max_resol(manager->dev, &width, &height);
	272
	273	return drm_helper_probe_single_connector_modes(connector, width,
	274	height);
	275	}
	276
1c248b7d ID	277	/* get detection status of display device. */
	278	static enum drm_connector_status
	279	exynos_drm_connector_detect(struct drm_connector *connector, bool force)
	280	{
adb6b159 ID	281	struct exynos_drm_connector *exynos_connector =
	282	to_exynos_connector(connector);
	283	struct exynos_drm_manager *manager = exynos_connector->manager;
74ccc539 ID	284	struct exynos_drm_display_ops *display_ops =
74ccc539 ID	285	manager->display_ops;
1c248b7d ID	286	enum drm_connector_status status = connector_status_disconnected;
	287
	288	DRM_DEBUG_KMS("%s\n", __FILE__);
	289
74ccc539 ID	290	if (display_ops && display_ops->is_connected) {
74ccc539 ID	291	if (display_ops->is_connected(manager->dev))
1c248b7d ID	292	status = connector_status_connected;
	293	else
	294	status = connector_status_disconnected;
	295	}
	296
	297	return status;
	298	}
	299
	300	static void exynos_drm_connector_destroy(struct drm_connector *connector)
	301	{
	302	struct exynos_drm_connector *exynos_connector =
	303	to_exynos_connector(connector);
	304
	305	DRM_DEBUG_KMS("%s\n", __FILE__);
	306
	307	drm_sysfs_connector_remove(connector);
	308	drm_connector_cleanup(connector);
	309	kfree(exynos_connector);
	310	}
	311
	312	static struct drm_connector_funcs exynos_connector_funcs = {
50caf25c	313	.dpms = exynos_drm_connector_dpms,
1de425b0	314	.fill_modes = exynos_drm_connector_fill_modes,
1c248b7d ID	315	.detect = exynos_drm_connector_detect,
	316	.destroy = exynos_drm_connector_destroy,
	317	};
	318
	319	struct drm_connector exynos_drm_connector_create(struct drm_device dev,
	320	struct drm_encoder *encoder)
	321	{
	322	struct exynos_drm_connector *exynos_connector;
	323	struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder);
	324	struct drm_connector *connector;
	325	int type;
	326	int err;
	327
	328	DRM_DEBUG_KMS("%s\n", __FILE__);
	329
	330	exynos_connector = kzalloc(sizeof(*exynos_connector), GFP_KERNEL);
	331	if (!exynos_connector) {
	332	DRM_ERROR("failed to allocate connector\n");
	333	return NULL;
	334	}
	335
	336	connector = &exynos_connector->drm_connector;
	337
74ccc539	338	switch (manager->display_ops->type) {
1c248b7d ID	339	case EXYNOS_DISPLAY_TYPE_HDMI:
1c248b7d ID	340	type = DRM_MODE_CONNECTOR_HDMIA;
1b17b206 SWK	341	connector->interlace_allowed = true;
1b17b206 SWK	342	connector->polled = DRM_CONNECTOR_POLL_HPD;
1c248b7d	343	break;
b73d1230 ID	344	case EXYNOS_DISPLAY_TYPE_VIDI:
	345	type = DRM_MODE_CONNECTOR_VIRTUAL;
	346	connector->polled = DRM_CONNECTOR_POLL_HPD;
	347	break;
1c248b7d ID	348	default:
	349	type = DRM_MODE_CONNECTOR_Unknown;
	350	break;
	351	}
	352
	353	drm_connector_init(dev, connector, &exynos_connector_funcs, type);
	354	drm_connector_helper_add(connector, &exynos_connector_helper_funcs);
	355
	356	err = drm_sysfs_connector_add(connector);
	357	if (err)
	358	goto err_connector;
	359
adb6b159 ID	360	exynos_connector->encoder_id = encoder->base.id;
adb6b159 ID	361	exynos_connector->manager = manager;
50caf25c	362	exynos_connector->dpms = DRM_MODE_DPMS_OFF;
44c91697	363	connector->dpms = DRM_MODE_DPMS_OFF;
1c248b7d	364	connector->encoder = encoder;
adb6b159	365
1c248b7d ID	366	err = drm_mode_connector_attach_encoder(connector, encoder);
	367	if (err) {
	368	DRM_ERROR("failed to attach a connector to a encoder\n");
	369	goto err_sysfs;
	370	}
	371
	372	DRM_DEBUG_KMS("connector has been created\n");
	373
	374	return connector;
	375
	376	err_sysfs:
	377	drm_sysfs_connector_remove(connector);
	378	err_connector:
	379	drm_connector_cleanup(connector);
	380	kfree(exynos_connector);
	381	return NULL;
	382	}