[1/5] fsl-diu-fb: fix issue with re-enabling DIU area descriptor on MPC5121

Submitted by Anatolij Gustschin on April 29, 2010, 11:49 p.m.

Details

Message ID 1272584978-19063-2-git-send-email-agust@denx.de
State Superseded
Delegated to: Grant Likely
Headers show

Commit Message

Anatolij Gustschin April 29, 2010, 11:49 p.m.
On MPC5121 re-configuring the DIU area descriptor by writing
new descriptor address doesn't work. As a result, DIU continues
to display using old area descriptor even if the new one has
been set.

Disabling the DIU before setting the new descriptor and
subsequently enabling it fixes the problem.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
---
 drivers/video/fsl-diu-fb.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

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diff --git a/drivers/video/fsl-diu-fb.c b/drivers/video/fsl-diu-fb.c
index 994358a..ee15a99 100644
--- a/drivers/video/fsl-diu-fb.c
+++ b/drivers/video/fsl-diu-fb.c
@@ -329,8 +329,11 @@  static int fsl_diu_enable_panel(struct fb_info *info)
 	if (mfbi->type != MFB_TYPE_OFF) {
 		switch (mfbi->index) {
 		case 0:				/* plane 0 */
-			if (hw->desc[0] != ad->paddr)
+			if (hw->desc[0] != ad->paddr) {
+				out_be32(&dr.diu_reg->diu_mode, MFB_MODE0);
 				out_be32(&hw->desc[0], ad->paddr);
+				out_be32(&dr.diu_reg->diu_mode, MFB_MODE1);
+			}
 			break;
 		case 1:				/* plane 1 AOI 0 */
 			cmfbi = machine_data->fsl_diu_info[2]->par;