[PATCH 2/7]implement detailed timing unified interface in interpret_edid.c
Ma Ling
ling.ma at intel.com
Fri Dec 26 01:32:45 PST 2008
create unified interface for detail timing operation.
---
hw/xfree86/ddc/interpret_edid.c | 64 +++++++++++++++++++++++++++++++++++++++
1 files changed, 64 insertions(+), 0 deletions(-)
diff --git a/hw/xfree86/ddc/interpret_edid.c b/hw/xfree86/ddc/interpret_edid.c
index 0438449..2002cd5 100644
--- a/hw/xfree86/ddc/interpret_edid.c
+++ b/hw/xfree86/ddc/interpret_edid.c
@@ -95,6 +95,70 @@ handle_edid_quirks(xf86MonPtr m)
}
}
+static int get_cea_detail_timing(Uchar *blk, xf86MonPtr mon,
+ struct detailed_monitor_section *det_mon)
+{
+ int dt_num;
+ int dt_offset = ((struct cea_ext_body *)blk)->dt_offset;
+
+ dt_num = 0;
+
+ if (dt_offset < CEA_EXT_MIN_DATA_OFFSET)
+ return dt_num;
+
+ for (; dt_offset < (CEA_EXT_MAX_DATA_OFFSET - DET_TIMING_INFO_LEN) &&
+ dt_num < CEA_EXT_DET_TIMING_NUM;
+ _NEXT_DT_MD_SECTION(dt_offset)) {
+
+ fetch_detailed_block(blk + dt_offset, &mon->ver, det_mon + dt_num);
+ dt_num = dt_num + 1 ;
+ }
+
+ return dt_num;
+}
+
+static void handle_cea_detail_block(Uchar *ext, xf86MonPtr mon,
+ handle_detailed_fn fn,
+ void *data)
+{
+ int i;
+ struct detailed_monitor_section det_mon[CEA_EXT_DET_TIMING_NUM];
+ int det_mon_num;
+
+ det_mon_num = get_cea_detail_timing(ext, mon, det_mon);
+
+ for (i = 0; i < det_mon_num; i++)
+ fn(det_mon + i, data);
+}
+
+void xf86ForEachDetailedBlock(xf86MonPtr mon,
+ handle_detailed_fn fn,
+ void *data)
+{
+ int i;
+ Uchar *ext;
+
+ if (mon == NULL)
+ return;
+
+ for (i = 0; i < DET_TIMINGS; i++)
+ fn(mon->det_mon + i, data);
+
+ for (i = 0; i < mon->no_sections; i++) {
+ ext = mon->rawData + EDID1_LEN * (i + 1);
+ switch (ext[EXT_TAG]){
+ case CEA_EXT:
+ handle_cea_detail_block(ext, mon, fn, data);
+ break;
+ case VTB_EXT:
+ case DI_EXT:
+ case LS_EXT:
+ case MI_EXT:
+ break;
+ }
+ }
+}
+
struct det_hv_parameter {
int real_hsize;
int real_vsize;
--
1.5.4.4
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