Intel FB: support for interlaced video modes
Intel framebuffer now supports interlaced video modes.
Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/video/intelfb/intelfbhw.c b/drivers/video/intelfb/intelfbhw.c
index 6a47682..04d0e0f 100644
--- a/drivers/video/intelfb/intelfbhw.c
+++ b/drivers/video/intelfb/intelfbhw.c
@@ -323,11 +323,7 @@
return 1;
}
- /* Check for interlaced/doublescan modes. */
- if (var->vmode & FB_VMODE_INTERLACED) {
- WRN_MSG("Mode is interlaced.\n");
- return 1;
- }
+ /* Check for doublescan modes. */
if (var->vmode & FB_VMODE_DOUBLE) {
WRN_MSG("Mode is double-scan.\n");
return 1;
@@ -1220,6 +1216,12 @@
/* Set the palette to 8-bit mode. */
*pipe_conf &= ~PIPECONF_GAMMA;
+
+ if (var->vmode & FB_VMODE_INTERLACED)
+ *pipe_conf |= PIPECONF_INTERLACE_W_FIELD_INDICATION;
+ else
+ *pipe_conf &= ~PIPECONF_INTERLACE_MASK;
+
return 0;
}
diff --git a/drivers/video/intelfb/intelfbhw.h b/drivers/video/intelfb/intelfbhw.h
index 8c54ba8..cfcd537 100644
--- a/drivers/video/intelfb/intelfbhw.h
+++ b/drivers/video/intelfb/intelfbhw.h
@@ -286,6 +286,10 @@
#define PIPECONF_UNLOCKED 0
#define PIPECONF_GAMMA (1 << 24)
#define PIPECONF_PALETTE 0
+#define PIPECONF_PROGRESSIVE (0 << 21)
+#define PIPECONF_INTERLACE_W_FIELD_INDICATION (6 << 21)
+#define PIPECONF_INTERLACE_FIELD_0_ONLY (7 << 21)
+#define PIPECONF_INTERLACE_MASK (7 << 21)
#define DISPARB 0x70030
#define DISPARB_AEND_MASK 0x1ff