[ARM] pxafb: allow insertion of delay to the smart panel command sequence
Some smart panel requires a delay between command sequences, while PXA
LCD controller didn't provide such one, let's emulate this by software.
A software delay marker can be inserted into the command sequence, once
pxafb_smart_queue() detects this, it flushes the previous commands and
delay for a specified number of milliseconds.
Signed-off-by: Eric Miao <eric.miao@marvell.com>
diff --git a/drivers/video/pxafb.c b/drivers/video/pxafb.c
index d6de84b..1e1c4ec 100644
--- a/drivers/video/pxafb.c
+++ b/drivers/video/pxafb.c
@@ -723,12 +723,19 @@
int i;
struct pxafb_info *fbi = container_of(info, struct pxafb_info, fb);
- /* leave 2 commands for INTERRUPT and WAIT_FOR_SYNC */
- for (i = 0; i < n_cmds; i++) {
+ for (i = 0; i < n_cmds; i++, cmds++) {
+ /* if it is a software delay, flush and delay */
+ if ((*cmds & 0xff00) == SMART_CMD_DELAY) {
+ pxafb_smart_flush(info);
+ mdelay(*cmds & 0xff);
+ continue;
+ }
+
+ /* leave 2 commands for INTERRUPT and WAIT_FOR_SYNC */
if (fbi->n_smart_cmds == CMD_BUFF_SIZE - 8)
pxafb_smart_flush(info);
- fbi->smart_cmds[fbi->n_smart_cmds++] = *cmds++;
+ fbi->smart_cmds[fbi->n_smart_cmds++] = *cmds;
}
return 0;