setbacklight: add new test for backlight control

Signed-off-by: Tiago Vignatti <tiago.vignatti@intel.com>

4 files changed, 111 insertions, 13 deletions

diff --git a/Makefile.am b/Makefile.am
index 7390993..d85c470 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -2,15 +2,3 @@ SUBDIRS = include src test
 
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = libbacklight.pc
-
-MAINTAINERCLEANFILES = ChangeLog INSTALL
-
-.PHONY: ChangeLog INSTALL
-
-INSTALL:
-	$(INSTALL_CMD)
-
-ChangeLog:
-	$(CHANGELOG_CMD)
-
-dist-hook: ChangeLog INSTALL
diff --git a/configure.ac b/configure.ac
index a137bfd..f1d0838 100644
--- a/configure.ac
+++ b/configure.ac
@@ -10,6 +10,7 @@ AM_SILENT_RULES([yes])
 
 AC_PROG_CC
 AC_PROG_LIBTOOL
+PKG_CHECK_MODULES([DRM], [libdrm])
 PKG_CHECK_MODULES([PCIACCESS], [pciaccess >= 0.10.0])
 AC_CONFIG_FILES([Makefile
 		 include/Makefile
diff --git a/test/Makefile.am b/test/Makefile.am
index 200aec6..7fbb4a1 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -23,7 +23,11 @@
 
 noinst_PROGRAMS = setbacklight
 
-AM_CPPFLAGS = -I$(top_srcdir)/include
+AM_CPPFLAGS = -I$(top_srcdir)/include $(DRM_CFLAGS)
 LDADD =  $(top_builddir)/src/libbacklight.la
 
 setbacklight_SOURCES = setbacklight.c
+setbacklight_LDFLAGS = $(DRM_CFLAGS) $(PCIACCESS_CFLAGS)
+setbacklight_LDADD = $(DRM_LIBS) \
+		     $(PCIACCESS_LIBS) \
+		     $(top_builddir)/src/libbacklight.la
diff --git a/test/setbacklight.c b/test/setbacklight.c
index 021d7bf..657908c 100644
--- a/test/setbacklight.c
+++ b/test/setbacklight.c
@@ -1,9 +1,114 @@
+/*
+ * Copyright © 2012 Intel Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of the copyright holders not be used in
+ * advertising or publicity pertaining to distribution of the software
+ * without specific, written prior permission.  The copyright holders make
+ * no representations about the suitability of this software for any
+ * purpose.  It is provided "as is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
+ * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author: Tiago Vignatti
+ */
+
 #include <stdio.h>
+#include <xf86drm.h>
+#include <xf86drmMode.h>
 
 #include "libbacklight.h"
 
+static void
+set_backlight(int fd, drmModeResPtr res, struct pci_device * dev, int blight)
+{
+	drmModeConnectorPtr connector;
+	int i;
+	long max_brightness, brightness, actual_brightness;
+
+	struct backlight *backlight;
+
+	for (i = 0; i < res->count_connectors; i++) {
+		connector = drmModeGetConnector(fd, res->connectors[i]);
+
+		if (!connector)
+			continue;
+
+		if (connector->connection == DRM_MODE_DISCONNECTED)
+			continue;
+		backlight = backlight_init(dev,
+				0,
+				connector->connector_type,
+				connector->connector_type_id);
+		drmModeFreeConnector(connector);
+	}
+
+	if (!backlight) {
+		printf("backlight adjust failed\n");
+		return;
+	}
+
+	max_brightness = backlight_get_max_brightness(backlight);
+	printf("Max backlight: %ld\n", max_brightness);
+
+	brightness = backlight_get_brightness(backlight);
+	printf("Cached backlight: %ld\n", brightness);
+
+	actual_brightness = backlight_get_actual_brightness(backlight);
+	printf("Hardware backlight: %ld\n", actual_brightness);
+
+	backlight_set_brightness(backlight, blight);
+	printf("Setting brightness to: %d\n", blight);
+
+	backlight_destroy(backlight);
+}
+
 int
 main(int argc, char **argv)
 {
+	int fd, blight;
+	drmModeResPtr res;
+	const char *module_name = "i915";
+	struct pci_id_match dev_match = {
+		PCI_MATCH_ANY, PCI_MATCH_ANY, PCI_MATCH_ANY, PCI_MATCH_ANY,
+		(0x03 << 16), 0xff000, 0 };
+	struct pci_device_iterator * iter;
+	struct pci_device * dev;
+
+	if (argc < 2) {
+		printf("Please add a brightness value\n");
+		return 1;
+	}
+
+	blight = atoi(argv[1]);
+
+	fd = drmOpen(module_name, NULL);
+	if (fd < 0) {
+		printf("Failed to open the card fd (%d)\n",fd);
+		return 1;
+	}
+
+	res = drmModeGetResources(fd);
+	if (res == 0) {
+		printf("Failed to get resources from card\n");
+		drmClose(fd);
+		return 1;
+	}
+
+	pci_system_init();
+	iter = pci_id_match_iterator_create(&dev_match);
+
+	while ((dev = pci_device_next(iter)) != NULL)
+		set_backlight(fd, res, dev, blight);
+
 	return 0;
 }