diff options
| author | Liu Ying <Ying.Liu@freescale.com> | 2011-06-22 11:03:17 +0800 |
|---|---|---|
| committer | Liu Ying <Ying.Liu@freescale.com> | 2011-06-23 10:37:45 +0800 |
| commit | 0b5378e4533b5454af840369c4eea2636a5204b7 (patch) | |
| tree | b37516cf2fc1d534cfaa52aa0c2ee1ea3e82d804 /drivers/mxc/ipu3/ipu_common.c | |
| parent | 96cc01a98f8d87bdc68b18763beb910a994521dc (diff) | |
ENGR00151858-1 IPUv3:Improve power stablility
This patch disables MEM_FG_SYNC channel when entering IPU
suspend. Adding this operation to IPU suspend can make sure
MEM_FG_SYNC channel is disabled, because we will not rely
on IPUv3 framebuffer driver to blank the framebuffer which
is related to MEM_FG_SYNC channel when entering suspend
mode. Note that this patch is for Android.
Signed-off-by: Liu Ying <Ying.Liu@freescale.com>
Diffstat (limited to 'drivers/mxc/ipu3/ipu_common.c')
| -rw-r--r-- | drivers/mxc/ipu3/ipu_common.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/mxc/ipu3/ipu_common.c b/drivers/mxc/ipu3/ipu_common.c index d837cf4140dd..7aa9640aed7a 100644 --- a/drivers/mxc/ipu3/ipu_common.c +++ b/drivers/mxc/ipu3/ipu_common.c @@ -2592,6 +2592,11 @@ EXPORT_SYMBOL(ipu_set_csc_coefficients); static int ipu_suspend(struct platform_device *pdev, pm_message_t state) { +#ifdef CONFIG_ANDROID + ipu_disable_channel(MEM_FG_SYNC, true); + ipu_uninit_channel(MEM_FG_SYNC); +#endif + if (g_ipu_clk_enabled) { uint32_t chan_should_disable, timeout = 1000, time = 0; |