viafb: use more compact modesetting functions

This patch replaces the old timing setup code with a redesigned one.
The new code might be slightly faster as it has no conditinals and
does not write the same register multiple times. Also it makes the
comparison to the documentation easier.
Regressions are unlikely but could happen as a lot of hardware is
undocumented.

Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

1 files changed, 18 insertions, 0 deletions

diff --git a/drivers/video/via/via_modesetting.h b/drivers/video/via/via_modesetting.h
index 013884543e91..06e09fe351ae 100644
--- a/drivers/video/via/via_modesetting.h
+++ b/drivers/video/via/via_modesetting.h
@@ -33,6 +33,24 @@
 #define VIA_PITCH_MAX	0x3FF8
 
 
+struct display_timing {
+	u16 hor_total;
+	u16 hor_addr;
+	u16 hor_blank_start;
+	u16 hor_blank_end;
+	u16 hor_sync_start;
+	u16 hor_sync_end;
+	u16 ver_total;
+	u16 ver_addr;
+	u16 ver_blank_start;
+	u16 ver_blank_end;
+	u16 ver_sync_start;
+	u16 ver_sync_end;
+};
+
+
+void via_set_primary_timing(const struct display_timing *timing);
+void via_set_secondary_timing(const struct display_timing *timing);
 void via_set_primary_address(u32 addr);
 void via_set_secondary_address(u32 addr);
 void via_set_primary_pitch(u32 pitch);