[Linux-fbdev-users] how to enable composite sync in radeonfb ?

[mirak m. <mi...@gm...>]

I found this patch here :
http://www.vdr-portal.de/board/thread.php?threadid=57529&threadview=0&hilight=&hilightuser=0&page=1

it would be nice to have that in upstream and also to be able to
enable or disable it with "csync" fbset option


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diff -ur linux-2.6.18.3.org/drivers/video/aty/radeon_base.c
linux-2.6.18.3/drivers/video/aty/radeon_base.c
--- linux-2.6.18.3.org/drivers/video/aty/radeon_base.c 2006-08-23
23:16:33.000000000 +0200
+++ linux-2.6.18.3/drivers/video/aty/radeon_base.c     2006-12-11
22:11:56.000000000 +0100
@@ -683,6 +683,9 @@
                rinfo->pll.ppll_max     = BIOS_IN32(pll_info_block + 0x16);

                printk(KERN_INFO "radeonfb: Retrieved PLL infos from BIOS\n");
+printk(KERN_INFO "radeonfb: disregarding BIOS ppll_min of %d\n",
rinfo->pll.ppll_min);
+rinfo->pll.ppll_min = 12000;
+printk(KERN_INFO "radeonfb: using ppll_min of %d instead\n",
rinfo->pll.ppll_min);
                goto found;
        }

@@ -1660,6 +1663,13 @@
                                        CRTC_CRT_ON;
        }

+/*printk(KERN_INFO "radeonfb: vmode requested 0x%x\n", mode->vmode);*/
+#define CRTC_CSYNC_EN (1 << 4)
+if (mode->vmode & FB_VMODE_INTERLACED) {
+    newmode->crtc_gen_cntl |= CRTC_INTERLACE_EN | CRTC_CSYNC_EN;
+}
+/*printk(KERN_INFO "radeonfb: crtc_gen_cntl 0x%x\n", newmode->crtc_gen_cntl);*/
+
        newmode->dac_cntl = /* INREG(DAC_CNTL) | */ DAC_MASK_ALL |
DAC_VGA_ADR_EN |
                           DAC_8BIT_EN;

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