diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mxc/ipu3/ipu_common.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/mxc/ipu3/ipu_common.c b/drivers/mxc/ipu3/ipu_common.c index afccbc4b36e6..66f06c231999 100644 --- a/drivers/mxc/ipu3/ipu_common.c +++ b/drivers/mxc/ipu3/ipu_common.c @@ -1863,7 +1863,30 @@ int32_t ipu_disable_channel(ipu_channel_t channel, bool wait_for_stop) if ((channel == MEM_BG_SYNC) || (channel == MEM_FG_SYNC) || (channel == MEM_DC_SYNC)) { + int timeout = 50; + int irq; + _ipu_dp_dc_disable(channel, false); + + /* + * wait for display channel EOF then disable IDMAC, + * it avoid NFB4EOF error. + */ + if (channel == MEM_BG_SYNC) + irq = IPU_IRQ_BG_SYNC_EOF; + if (channel == MEM_FG_SYNC) + irq = IPU_IRQ_FG_SYNC_EOF; + else + irq = IPU_IRQ_DC_SYNC_EOF; + __raw_writel(IPUIRQ_2_MASK(irq), + IPUIRQ_2_STATREG(irq)); + while ((__raw_readl(IPUIRQ_2_STATREG(irq)) & + IPUIRQ_2_MASK(irq)) == 0) { + msleep(10); + timeout -= 10; + if (timeout <= 0) + break; + } } else if (wait_for_stop) { while (idma_is_set(IDMAC_CHA_BUSY, in_dma) || idma_is_set(IDMAC_CHA_BUSY, out_dma) || |