Re: X support on 2004 ibook (radeon 9200)

[Benjamin Herrenschmidt]

On Thu, 2004-05-13 at 15:53, [EMAIL PROTECTED]
wrote:
> Just thought i'd add my two cents in.  I've been
> having the exact same problem (same new 2004 ibook),
> when I start X I get blinking horizontal lines and
> then when I try and kill the xserver the whole ibook
> locks up.
> 
> I'm using vanilla 2.6.6 kernel confiuged according to
> instructions in:
> http://seb.france.free.fr/linux/ibookG4/iBookG4-howto.html

Apply this patch to 2.6.6 to get radeonfb to not flicker on this
newer model.

===== drivers/video/aty/radeon_base.c 1.12 vs edited =====
--- 1.12/drivers/video/aty/radeon_base.c        Fri Mar  5 21:40:50 2004
+++ edited/drivers/video/aty/radeon_base.c      Thu May 13 11:22:21 2004
@@ -1144,6 +1144,7 @@
 
        /* Set PPLL ref. div */
        if (rinfo->family == CHIP_FAMILY_R300 ||
+           rinfo->family == CHIP_FAMILY_RS300 ||
            rinfo->family == CHIP_FAMILY_R350 ||
            rinfo->family == CHIP_FAMILY_RV350) {
                if (mode->ppll_ref_div & R300_PPLL_REF_DIV_ACC_MASK) {
@@ -1855,7 +1856,8 @@
             rinfo->family == CHIP_FAMILY_RV280 ||
             rinfo->family == CHIP_FAMILY_RV350) &&
            !machine_is_compatible("PowerBook4,3") &&
-           !machine_is_compatible("PowerBook6,3"))
+           !machine_is_compatible("PowerBook6,3") &&
+           !machine_is_compatible("PowerBook6,5"))
                conv_table = backlight_conv_m7;
        else
                conv_table = backlight_conv_m6;
@@ -2129,7 +2131,31 @@
 #endif /* CONFIG_PPC_OF */
 
        /* framebuffer size */
-       tmp = INREG(CONFIG_MEMSIZE);
+       if ((rinfo->family == CHIP_FAMILY_RS100) ||
+           (rinfo->family == CHIP_FAMILY_RS200) ||
+           (rinfo->family == CHIP_FAMILY_RS300)) {
+         u32 tom = INREG(NB_TOM);
+         tmp = ((((tom >> 16) - (tom & 0xffff) + 1) << 6) * 1024);
+
+         OUTREG(MC_FB_LOCATION, tom);
+         OUTREG(DISPLAY_BASE_ADDR, (tom & 0xffff) << 16);
+         OUTREG(CRTC2_DISPLAY_BASE_ADDR, (tom & 0xffff) << 16);
+         OUTREG(OV0_BASE_ADDR, (tom & 0xffff) << 16);
+
+         /* This is supposed to fix the crtc2 noise problem. */
+         OUTREG(GRPH2_BUFFER_CNTL, INREG(GRPH2_BUFFER_CNTL) & ~0x7f0000);
+ 
+         if ((rinfo->family == CHIP_FAMILY_RS100) ||
+             (rinfo->family == CHIP_FAMILY_RS200)) {
+            /* This is to workaround the asic bug for RMX, some versions
+               of BIOS dosen't have this register initialized correctly.
+            */
+            OUTREGP(CRTC_MORE_CNTL, CRTC_H_CUTOFF_ACTIVE_EN,
+                    ~CRTC_H_CUTOFF_ACTIVE_EN);
+         }
+       } else {
+         tmp = INREG(CONFIG_MEMSIZE);
+       }
 
        /* mem size is bits [28:0], mask off the rest */
        rinfo->video_ram = tmp & CONFIG_MEMSIZE_MASK;
===== drivers/video/aty/radeon_monitor.c 1.6 vs edited =====
--- 1.6/drivers/video/aty/radeon_monitor.c      Wed Mar 31 23:41:00 2004
+++ edited/drivers/video/aty/radeon_monitor.c   Thu May 13 11:22:36 2004
@@ -653,7 +653,8 @@
                rinfo->panel_info.use_bios_dividers = 1;
        }
        /* iBook G4 */
-       if (machine_is_compatible("PowerBook6,3")) {
+       if (machine_is_compatible("PowerBook6,3") |
+           machine_is_compatible("PowerBook6,5")) {
                rinfo->panel_info.ref_divider = rinfo->pll.ref_div;
                rinfo->panel_info.post_divider = 0x6;
                rinfo->panel_info.fbk_divider = 0xad;