/*

 * Copyright 2008 Tungsten Graphics

 *   Jakob Bornecrantz <jakob@tungstengraphics.com>

 * Copyright 2008 Intel Corporation

 *   Jesse Barnes <jesse.barnes@intel.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 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 THE

 * AUTHORS OR COPYRIGHT HOLDERS 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.

 */

/*

 * This fairly simple test program dumps output in a similar format to the

 * "xrandr" tool everyone knows & loves.  It's necessarily slightly different

 * since the kernel separates outputs into encoder and connector structures,

 * each with their own unique ID.  The program also allows test testing of the

 * memory management and mode setting APIs by allowing the user to specify a

 * connector and mode to use for mode setting.  If all works as expected, a

 * blue background should be painted on the monitor attached to the specified

 * connector after the selected mode is set.

 *

 * TODO: use cairo to write the mode info on the selected output once

 *       the mode has been programmed, along with possible test patterns.

 */

#include <errno.h>

#include <stdint.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include "xf86drm.h"

#include "xf86drmMode.h"

#include "common.h"

struct type_name {

	unsigned int type;

	const char *name;

};

static const char *util_lookup_type_name(unsigned int type,

					 const struct type_name *table,

					 unsigned int count)

{

	unsigned int i;

	for (i = 0; i < count; i++)

		if (table[i].type == type)

			return table[i].name;

	return NULL;

}

static const struct type_name encoder_type_names[] = {

	{ DRM_MODE_ENCODER_NONE, "none" },

	{ DRM_MODE_ENCODER_DAC, "DAC" },

	{ DRM_MODE_ENCODER_TMDS, "TMDS" },

	{ DRM_MODE_ENCODER_LVDS, "LVDS" },

	{ DRM_MODE_ENCODER_TVDAC, "TVDAC" },

	{ DRM_MODE_ENCODER_VIRTUAL, "Virtual" },

	{ DRM_MODE_ENCODER_DSI, "DSI" },

	{ DRM_MODE_ENCODER_DPMST, "DPMST" },

	{ DRM_MODE_ENCODER_DPI, "DPI" },

};

const char *util_lookup_encoder_type_name(unsigned int type)

{

	return util_lookup_type_name(type, encoder_type_names,

				     ARRAY_SIZE(encoder_type_names));

}

static const struct type_name connector_status_names[] = {

	{ DRM_MODE_CONNECTED, "connected" },

	{ DRM_MODE_DISCONNECTED, "disconnected" },

	{ DRM_MODE_UNKNOWNCONNECTION, "unknown" },

};

const char *util_lookup_connector_status_name(unsigned int status)

{

	return util_lookup_type_name(status, connector_status_names,

				     ARRAY_SIZE(connector_status_names));

}

static const struct type_name connector_type_names[] = {

	{ DRM_MODE_CONNECTOR_Unknown, "unknown" },

	{ DRM_MODE_CONNECTOR_VGA, "VGA" },

	{ DRM_MODE_CONNECTOR_DVII, "DVI-I" },

	{ DRM_MODE_CONNECTOR_DVID, "DVI-D" },

	{ DRM_MODE_CONNECTOR_DVIA, "DVI-A" },

	{ DRM_MODE_CONNECTOR_Composite, "composite" },

	{ DRM_MODE_CONNECTOR_SVIDEO, "s-video" },

	{ DRM_MODE_CONNECTOR_LVDS, "LVDS" },

	{ DRM_MODE_CONNECTOR_Component, "component" },

	{ DRM_MODE_CONNECTOR_9PinDIN, "9-pin DIN" },

	{ DRM_MODE_CONNECTOR_DisplayPort, "DP" },

	{ DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },

	{ DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },

	{ DRM_MODE_CONNECTOR_TV, "TV" },

	{ DRM_MODE_CONNECTOR_eDP, "eDP" },

	{ DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },

	{ DRM_MODE_CONNECTOR_DSI, "DSI" },

	{ DRM_MODE_CONNECTOR_DPI, "DPI" },

};

const char *util_lookup_connector_type_name(unsigned int type)

{

	return util_lookup_type_name(type, connector_type_names,

				     ARRAY_SIZE(connector_type_names));

}

static const char * const modules[] = {

	"i915",

	"amdgpu",

	"radeon",

	"nouveau",

	"vmwgfx",

	"omapdrm",

	"exynos",

	"tilcdc",

	"msm",

	"sti",

	"tegra",

	"imx-drm",

	"rockchip",

	"atmel-hlcdc",

	"fsl-dcu-drm",

	"vc4",

	"virtio_gpu",

	"mediatek",

	"meson",

	"pl111",

	"stm",

	"sun4i-drm",

	"armada-drm",

	"komeda",

	"imx-dcss",

};

int util_open(const char *device, const char *module)

{

	int fd;

	if (module) {

		fd = drmOpen(module, device);

		if (fd < 0) {

			fprintf(stderr, "failed to open device '%s': %s\n",

				module, strerror(errno));

			return -errno;

		}

	} else {

		unsigned int i;

		for (i = 0; i < ARRAY_SIZE(modules); i++) {

			printf("trying to open device '%s'...", modules[i]);

			fd = drmOpen(modules[i], device);

			if (fd < 0) {

				printf("failed\n");

			} else {

				printf("done\n");

				break;

			}

		}

		if (fd < 0) {

			fprintf(stderr, "no device found\n");

			return -ENODEV;

		}

	}

	return fd;

}