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mxc_hdmi: Fix hang during boot 

If HDMI has been in use by the bootloader or a previous
running kernel it hangs when HDMI cable is connected.

Move the enabling of overflow_into mxc_hdmi_setup() to fix this
issue.

Original patch is from Jon Nettleton based on a 3.10 kernel:
https://github.com/xbianonpi/xbian-package-kernel/blob/master/patches/imx6/hdmi-freeze.patch

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
(cherry picked from commit 09845b886c1198c9461de424ffd95dde363324c1)
This commit is contained in:
Fabio Estevam 2017-06-28 18:33:55 -03:00 committed by Otavio Salvador
parent 7c14829d6f
commit ed8f0b9daf
1 changed files with 3 additions and 3 deletions
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6
drivers/video/fbdev/mxc/mxc_hdmi.c
View File

@ -1268,9 +1268,6 @@ static void mxc_hdmi_phy_init(struct mxc_hdmi *hdmi)
|| (hdmi->blank != FB_BLANK_UNBLANK))
return;
if (!hdmi->hdmi_data.video_mode.mDVI)
hdmi_enable_overflow_interrupts();
/*check csc whether needed activated in HDMI mode */
cscon = (isColorSpaceConversion(hdmi) &&
!hdmi->hdmi_data.video_mode.mDVI);
@ -2270,6 +2267,9 @@ static void mxc_hdmi_setup(struct mxc_hdmi *hdmi, unsigned long event)
msleep(20);
mxc_hdmi_clear_overflow(hdmi);
if (!hdmi->hdmi_data.video_mode.mDVI)
hdmi_enable_overflow_interrupts();
dev_dbg(&hdmi->pdev->dev, "%s exit\n\n", __func__);
}