Hi, All
I want to switch output format between PAL and LCD. So I just
reset vpss module before switching output format in davinci frame
buffer driver(davincifb.c). for example:
reset_vpss();
davincifb_pal_composite_config(on);
however, there are nothing showed on PAL TV. If I don't call
reset_vpss(), then the TV can show something , but the picture is
displaced. and how to reset vpss ? thanks for any comments.
#define PSC_BASE IO_ADDRESS(0x01c41000)
#define PSC_PTSTATE (PSC_BASE + 0x128)
#define PSC_MDCTL_VPSS (PSC_BASE + 0xa00)
#define PSC_PTCMD (PSC_BASE + 0x120)
#define SyncReset 0x01
#define PSC_MDCTL_NEXT 0x03
reset_vpss()
{
int pt_state = dispc_reg_in(PSC_PTSTATE);
if((pt_state & 0x01) == 0)
{
dispc_reg_merge(PSC_MDCTL_VPSS, SyncReset, PSC_MDCTL_NEXT);
dispc_reg_out(PSC_PTCMD, 0x01); //set ptcmd go bit.
}
}
--
Best Regards
Feng zeheng
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