From: Ville Syrjälä <[email protected]> When DSS transitions from off mode to on VENC may generate a spurious SYNC_LOST_DIGIT error. Just ack it when restoring the context. Also restore IRQENABLE last to avoid triggering interrupts before the context is fully restored.
Signed-off-by: Ville Syrjälä <[email protected]> --- drivers/video/omap2/dss/dispc.c | 11 ++++++++++- 1 files changed, 10 insertions(+), 1 deletions(-) diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c index e777e35..b8c1603 100644 --- a/drivers/video/omap2/dss/dispc.c +++ b/drivers/video/omap2/dss/dispc.c @@ -335,7 +335,7 @@ void dispc_save_context(void) void dispc_restore_context(void) { RR(SYSCONFIG); - RR(IRQENABLE); + /*RR(IRQENABLE);*/ /*RR(CONTROL);*/ RR(CONFIG); RR(DEFAULT_COLOR0); @@ -472,6 +472,15 @@ void dispc_restore_context(void) /* enable last, because LCD & DIGIT enable are here */ RR(CONTROL); + + /* clear spurious SYNC_LOST_DIGIT interrupts */ + dispc_write_reg(DISPC_IRQSTATUS, DISPC_IRQ_SYNC_LOST_DIGIT); + + /* + * enable last so IRQs won't trigger before + * the context is fully restored + */ + RR(IRQENABLE); } #undef SR -- 1.6.4.4 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
