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msm: mdss: hdmi: HDCP and Tx core power off sequence

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Power off HDCP first before powering off timing generator and
Tx core to make sure last VSYNC is received before the HDMI
clocks are off and there are no side effects like snow screen
on HDCP.

Change-Id: I1c5e9761b77d559f42ce0a0982642dac6dd9f1d8
Signed-off-by: Ajay Singh Parmar <aparmar@codeaurora.org>
This commit is contained in:
Ajay Singh Parmar 2014-04-25 11:26:58 -07:00 • committed by David Keitel
parent d3d3c7eab8
commit bddf54c0d8
1 changed files with 8 additions and 8 deletions
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16
drivers/video/fbdev/msm/mdss_hdmi_tx.c
View file

@ -2649,11 +2649,6 @@ static void hdmi_tx_power_off_work(struct work_struct *work)
return;
}
if (hdmi_ctrl->hdcp_feature_on && hdmi_ctrl->present_hdcp) {
DEV_DBG("%s: Turning off HDCP\n", __func__);
hdmi_hdcp_off(hdmi_ctrl->feature_data[HDMI_TX_FEAT_HDCP]);
}
if (hdmi_tx_enable_power(hdmi_ctrl, HDMI_TX_DDC_PM, false))
DEV_WARN("%s: Failed to disable ddc power\n", __func__);
@ -3245,18 +3240,23 @@ static int hdmi_tx_panel_event_handler(struct mdss_panel_data *panel_data,
break;
case MDSS_EVENT_BLANK:
if (hdmi_ctrl->hdcp_feature_on && hdmi_ctrl->present_hdcp) {
DEV_DBG("%s: Turning off HDCP\n", __func__);
hdmi_hdcp_off(
hdmi_ctrl->feature_data[HDMI_TX_FEAT_HDCP]);
}
break;
case MDSS_EVENT_PANEL_OFF:
if (hdmi_ctrl->panel_power_on) {
rc = hdmi_tx_power_off(panel_data);
if (rc)
DEV_ERR("%s: hdmi_tx_power_off failed.rc=%d\n",
__func__, rc);
} else {
DEV_DBG("%s: hdmi is already powered off\n", __func__);
}
break;
case MDSS_EVENT_PANEL_OFF:
hdmi_ctrl->timing_gen_on = false;
break;