gma500: Set the correct bits according to the pipe

Squash a hardcoded assumption we shouldn't really make

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/gma500/psb_intel_display.c b/drivers/staging/gma500/psb_intel_display.c
index 4f47d09..a99271d 100644 (file)
--- a/drivers/staging/gma500/psb_intel_display.c
+++ b/drivers/staging/gma500/psb_intel_display.c
@@ -723,17 +723,18 @@ static int psb_intel_crtc_mode_set(struct drm_crtc *crtc,
        if (is_lvds) {
                u32 lvds = REG_READ(LVDS);
 
-               lvds |=
-                   LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP |
-                   LVDS_PIPEB_SELECT;
+               lvds &= ~LVDS_PIPEB_SELECT;
+                if (pipe == 1)
+                        lvds |= LVDS_PIPEB_SELECT;
+
+               lvds |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP;
                /* Set the B0-B3 data pairs corresponding to
                 * whether we're going to
                 * set the DPLLs for dual-channel mode or not.
                 */
+               lvds &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP);
                if (clock.p2 == 7)
                        lvds |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP;
-               else
-                       lvds &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP);
 
                /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
                 * appropriately here, but we need to look more