IABSD.fr/xenocara/lib/libdrm/tests/util/kms.c

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• Author : jsg
  Date : 2021-07-05 11:04:36
  Hash : 6af6d1f0
  Message : Import libdrm 2.4.107

• lib/libdrm/tests/util/kms.c

• /*
   * 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",
  	"mxsfb-drm",
  };
  
  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;
  }