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authorGwenolé Beauchesne <gbeauchesne@mandriva.org>2004-08-25 08:53:14 +0000
committerGwenolé Beauchesne <gbeauchesne@mandriva.org>2004-08-25 08:53:14 +0000
commit772967d2711cfdc432b2cea0c8df137edbf18bb0 (patch)
treea264ecb9cdd0bc8dd7c06f5e6900dffd0d807a86 /tools/ddcprobe/of.c
parent5fd67915fadb26d49934abdcafb9c37467ce2949 (diff)
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Get EDID block from OF (kudzu)
Diffstat (limited to 'tools/ddcprobe/of.c')
-rw-r--r--tools/ddcprobe/of.c146
1 files changed, 146 insertions, 0 deletions
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__ */