diff options
| author | Liu Ying <Ying.Liu@freescale.com> | 2011-10-25 14:16:30 +0800 |
|---|---|---|
| committer | Andy Voltz <andy.voltz@timesys.com> | 2012-03-09 11:26:44 -0500 |
| commit | a20cf668dca6c0ac1403ff1826c91804ec8803d1 (patch) | |
| tree | 05a84cac2f5010dc883cfdd50f79264578cfa856 /drivers | |
| parent | 31e394fe2acf6eab781a836d0014cd443c9c2bb1 (diff) | |
ENGR00160566 IPUv3:Improve IDMAC_LOCK_EN setting
1) Clear IDMAC_LOCK_EN when dual display is enabled
to workaround black flash issue when playing video
on DP-FG.
2) Only set IDMAC_LOCK_EN for IPUv3M.
Signed-off-by: Liu Ying <Ying.Liu@freescale.com>
(cherry picked from commit 7c22da39601cfc6551292cbd2c5c1d9ee3b4fbfa)
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mxc/ipu3/ipu_common.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/drivers/mxc/ipu3/ipu_common.c b/drivers/mxc/ipu3/ipu_common.c index 1f5ed8bc10a5..baf22dda10ae 100644 --- a/drivers/mxc/ipu3/ipu_common.c +++ b/drivers/mxc/ipu3/ipu_common.c @@ -386,7 +386,8 @@ static int ipu_probe(struct platform_device *pdev) __raw_writel(0x18800001L, IDMAC_CHA_PRI(0)); /* AXI burst setting for sync refresh channels */ - __raw_writel(0x003F0000, IDMAC_CH_LOCK_EN_1); + if (g_ipu_hw_rev == 3) + __raw_writel(0x003F0000, IDMAC_CH_LOCK_EN_1); /* Set MCU_T to divide MCU access window into 2 */ __raw_writel(0x00400000L | (IPU_MCU_T_DEFAULT << 18), IPU_DISP_GEN); @@ -989,6 +990,11 @@ void ipu_uninit_channel(ipu_channel_t channel) __raw_writel(ipu_conf, IPU_CONF); + /* Restore IDMAC_LOCK_EN when we don't use dual display */ + if (!(ipu_di_use_count[0] && ipu_di_use_count[1]) && + _ipu_is_dmfc_chan(in_dma) && g_ipu_hw_rev == 3) + __raw_writel(0x003F0000, IDMAC_CH_LOCK_EN_1); + spin_unlock_irqrestore(&ipu_lock, lock_flags); ipu_put_clk(); @@ -1800,6 +1806,14 @@ int32_t ipu_enable_channel(ipu_channel_t channel) ipu_conf |= IPU_CONF_SMFC_EN; __raw_writel(ipu_conf, IPU_CONF); + /* Clear IDMAC_LOCK_EN to workaround black flash for dual display */ + if (g_ipu_hw_rev == 3 && _ipu_is_dmfc_chan(in_dma)) { + if (ipu_di_use_count[1] && ipu_di_use_count[0]) + __raw_writel(0x0, IDMAC_CH_LOCK_EN_1); + else + __raw_writel(0x003F0000, IDMAC_CH_LOCK_EN_1); + } + if (idma_is_valid(in_dma)) { reg = __raw_readl(IDMAC_CHA_EN(in_dma)); __raw_writel(reg | idma_mask(in_dma), IDMAC_CHA_EN(in_dma)); @@ -2782,7 +2796,8 @@ static int ipu_resume(struct platform_device *pdev) __raw_writel(0x18800001L, IDMAC_CHA_PRI(0)); /* AXI burst setting for sync refresh channels */ - __raw_writel(0x003F0000, IDMAC_CH_LOCK_EN_1); + if (g_ipu_hw_rev == 3) + __raw_writel(0x003F0000, IDMAC_CH_LOCK_EN_1); clk_disable(g_ipu_clk); } mutex_unlock(&ipu_clk_lock); |