Get EDID block from OF (kudzu)

3 files changed, 265 insertions, 0 deletions

diff --git a/tools/ddcprobe/minifind.c b/tools/ddcprobe/minifind.c
new file mode 100644
index 000000000..f483055b4
--- /dev/null
+++ b/tools/ddcprobe/minifind.c
@@ -0,0 +1,77 @@
+/* minifind.c -- simple find library
+ * 
+ * Copyright (c) 2002 Terra Soft Solutions, Inc.
+ * Written by Dan Burcaw <dburcaw@terrasoftsolutions.com>
+ *
+ * This software may be freely redistributed under the terms of the GNU
+ * library public license.
+ *
+ * You should have received a copy of the GNU Library Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include "minifind.h"
+
+// insert a node at head of linked-list
+void insert_node(struct pathNode *n, char *path)
+{
+  	struct pathNode *new = (struct pathNode *) malloc(sizeof(struct pathNode));
+  	new->path = path;
+  	new->next = n->next;
+  	n->next = new;
+}
+
+// return input strip less last character
+char *stripLastChar(char *in)
+{
+	char *out = malloc(sizeof(char)*strlen(in));
+	snprintf(out, strlen(in) - 1, "%s", in);
+	return out; 
+}
+
+// do the work
+char *minifind(char *dir, char *search, struct findNode *list)
+{
+  	char *d = NULL;
+  	int n;
+  	struct dirent **namelist;
+  	struct stat buf;
+ 
+  	if (dir[strlen(dir)-1] == '/')
+	  	dir = stripLastChar(dir);
+
+	// check is there is an exact filematch to dir
+	// when search is not specified
+	if (search == NULL)
+	{
+		if (lstat(dir, &buf) == 0)
+			insert_node(list->result, dir);
+		return 0;
+	}
+
+  	n = scandir(dir, &namelist, 0, alphasort);
+  	if (n >= 0)
+  	{
+      		while (n--)
+      		{
+          		d = malloc(sizeof(char) * (strlen(dir) \
+						+ strlen(namelist[n]->d_name)+1));
+          		sprintf(d, "%s/%s", dir, namelist[n]->d_name);	 
+			if (strstr(namelist[n]->d_name, search))
+		      		insert_node(list->result, d);
+      
+          		if ((lstat(d, &buf) == 0) && S_ISDIR(buf.st_mode))
+          		{
+              			if (strcmp(namelist[n]->d_name, ".") && 
+                  			strcmp(namelist[n]->d_name, ".."))
+	          			d = minifind(d, search, list);
+          		}
+      			free(namelist[n]);
+      		}
+  		free(namelist);
+  		return d;
+  	}
+  	return 0;
+}
diff --git a/tools/ddcprobe/minifind.h b/tools/ddcprobe/minifind.h
new file mode 100644
index 000000000..4f725258c
--- /dev/null
+++ b/tools/ddcprobe/minifind.h
@@ -0,0 +1,42 @@
+/* minifind.h
+ * 
+ * Copyright (c) 2002 Terra Soft Solutions, Inc.
+ * Written by Dan Burcaw <dburcaw@terrasoftsolutions.com>
+ * 
+ * This software may be freely redistributed under the terms of the GNU
+ * library public license.
+ *
+ * You should have received a copy of the GNU Library Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#ifndef MINIFIND_H
+#define MINIFIND_H
+
+#include <stdio.h>
+#include <string.h>
+#include <dirent.h>
+#include <malloc.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+struct pathNode
+{
+  char *path;
+  struct pathNode *next;
+};
+
+struct findNode
+{
+  struct pathNode *result;
+  struct pathNode *exclude;
+};
+
+void insert_node(struct pathNode *n, char *path);
+char *stripLastChar(char *in);
+char *minifind(char *dir, char *search, struct findNode *list);
+
+#endif /* MINIFIND_H */
diff --git a/tools/ddcprobe/of.c b/tools/ddcprobe/of.c
new file mode 100644
index 000000000..5e8aefa3f
--- /dev/null
+++ b/tools/ddcprobe/of.c
@@ -0,0 +1,146 @@
+#ifdef __powerpc__
+
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <netinet/in.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <assert.h>
+#include <limits.h>
+#include <ctype.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <linux/fb.h>
+#include "vbe.h"
+#include "minifind.h"
+
+/* misnomer */
+struct vbe_info *vbe_get_vbe_info()
+{
+	struct vbe_info *ret = NULL;
+        struct fb_fix_screeninfo fix;
+	unsigned char *mem;
+        int rc = 0;
+        int fd, i;
+
+        if (!rc && !(fd = open("/dev/fb0", O_RDONLY)))
+        {
+                rc = 1;
+                fprintf(stderr, "Unable to open /dev/fb0. Exiting.\n");
+        }
+
+        if ((!rc) && (ioctl(fd, FBIOGET_FSCREENINFO, &fix)))
+        {
+                rc = 1;
+                fprintf(stderr, "Framebuffer ioctl failed. Exiting.\n");
+        }
+
+        close(fd);
+
+        if (!rc)
+        {
+                // Note: if OFfb, vram info is unreliable!
+		if (strcmp(fix.id, "OFfb"))
+		{
+	        	ret = malloc(sizeof(struct vbe_info));
+			mem = strdup(fix.id);
+			while(((i = strlen(mem)) > 0) && isspace(mem[i - 1])) {
+				mem[i - 1] = '\0';
+			}
+			ret->oem_name.string = mem;
+			ret->product_name.string = NULL;
+			ret->vendor_name.string = NULL;
+			ret->product_revision.string = NULL;
+			ret->memory_size = fix.smem_len/1024;
+		}
+        }
+
+	return ret;
+}
+
+int get_edid_supported()
+{
+	int ret = 0;
+	struct findNode *list;
+	struct pathNode *n;
+
+	list = (struct findNode *) malloc(sizeof(struct findNode));
+        list->result = (struct pathNode *) malloc(sizeof(struct pathNode));
+        list->result->path = NULL;
+        list->result->next = list->result;
+
+        minifind("/proc/device-tree", "EDID", list);
+
+	/* Supported */
+	for (n = list->result->next; n != list->result; n = n->next)
+		ret = 1;
+
+	/* Clean up and return. */
+	return ret;
+}
+
+/* Get EDID info. */
+struct edid1_info *get_edid_info()
+{
+	unsigned char *mem;
+	struct edid1_info *ret = NULL;
+	struct pathNode *n;
+	struct findNode *list;
+	u_int16_t man;
+	unsigned char edid[0x80];
+	FILE* edid_file = NULL;
+	char *path = NULL;
+
+	list = (struct findNode *) malloc(sizeof(struct findNode));
+        list->result = (struct pathNode *) malloc(sizeof(struct pathNode));
+        list->result->path = NULL;
+        list->result->next = list->result;
+
+	minifind("/proc/device-tree", "EDID", list);
+
+	for (n = list->result->next; n != list->result; n = n->next)
+	{
+		path = n->path;
+		break;
+	}
+
+	if (path)
+		edid_file = fopen(path, "rb" );
+
+
+	if (!edid_file)
+		return NULL;
+
+	if (fread(edid, sizeof(unsigned char), 0x80, edid_file) != 0x80)
+		return NULL;
+  
+    	fclose(edid_file);
+    
+	mem = malloc(sizeof(struct edid1_info));
+	if(mem == NULL) {
+		return NULL;
+	}
+
+	memcpy(mem, edid, 0x80);
+
+
+	/* Get memory for return. */
+	ret = malloc(sizeof(struct edid1_info));
+	if(ret == NULL) {
+		free(mem);
+		return NULL;
+	}
+
+	/* Copy the buffer for return. */
+	memcpy(ret, mem, sizeof(struct edid1_info));
+
+	memcpy(&man, &ret->manufacturer_name, 2);
+	man = ntohs(man);
+	memcpy(&ret->manufacturer_name, &man, 2);
+
+	free(mem);
+	return ret;
+}
+
+#endif /* __powerpc__ */