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Commit d7017bf5 authored by Narender Ankam's avatar Narender Ankam Committed by Gerrit - the friendly Code Review server
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msm: mdss: hdmi: handle hpd uevents notifications gracefully 



Notify HDMI HPD uevents only when there is a change in HPD
connection state.

Change-Id: I679a9dc0fddc0aec5728cf7572b2d373b17ff1c2
Signed-off-by: default avatarNarender Ankam <nankam@codeaurora.org>
parent f9d020d2

drivers/video/fbdev/msm/mdss_hdmi_tx.c

+8 −1
Original line number Diff line number Diff line
@@ -427,7 +427,7 @@ static inline void hdmi_tx_audio_notify( 
}



static void hdmi_tx_send_cable_notification(

		struct hdmi_tx_ctrl *hdmi_ctrl, int val)

		struct hdmi_tx_ctrl *hdmi_ctrl, bool val)

{

	char name[HPD_STRING_SIZE], status[HPD_STRING_SIZE];

	char *envp[3];
@@ -437,6 +437,13 @@ static void hdmi_tx_send_cable_notification( 
		return;

	}



	if (hdmi_ctrl->hpd_notif_state == !!val) {

		pr_debug("%s: no change in HPD state\n", __func__);

		return;

	}



	hdmi_ctrl->hpd_notif_state = !!val;



	snprintf(name, HPD_STRING_SIZE, "name=%s", "HDMI");

	snprintf(status, HPD_STRING_SIZE, "status=%s",

			val ? "connected" : "disconnected");

drivers/video/fbdev/msm/mdss_hdmi_tx.h

+1 −0
Original line number Diff line number Diff line
@@ -101,6 +101,7 @@ struct hdmi_tx_ctrl { 
	u32 hdmi_tx_major_version;

	u32 max_pclk_khz;

	u32 hpd_state;

	bool hpd_notif_state;

	u32 hpd_off_pending;

	u32 hpd_feature_on;

	u32 hpd_initialized;