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Commit 63682b7e authored by Ajay Singh Parmar's avatar Ajay Singh Parmar
Browse files

msm: mdss: hdmi: Add MHL handshake 



Add HPD (Hot Plug Detect) on/off and HPD line high or low pull
handshake between MHL (Mobile High-Definition Link) and HDMI
so that both the drivers are in sync on cable connect and
disconnect.

Change-Id: Ia3264983ba3b81c499e287fa6922e1511bdf65a7
Signed-off-by: default avatarAjay Singh Parmar <aparmar@codeaurora.org>
parent 6badacdb

drivers/video/msm/mdss/mdss_hdmi_tx.c

+7 −0
Original line number Diff line number Diff line
@@ -2449,6 +2449,10 @@ static void hdmi_tx_power_off_work(struct work_struct *work) 
	mutex_unlock(&hdmi_ctrl->mutex);



	DEV_INFO("%s: HDMI Core: OFF\n", __func__);



	if (hdmi_ctrl->hdmi_tx_hpd_done)

		hdmi_ctrl->hdmi_tx_hpd_done(

			hdmi_ctrl->downstream_data);

} /* hdmi_tx_power_off_work */



static int hdmi_tx_power_off(struct mdss_panel_data *panel_data)
@@ -2551,6 +2555,9 @@ static int hdmi_tx_power_on(struct mdss_panel_data *panel_data) 


	hdmi_tx_hpd_polarity_setup(hdmi_ctrl, HPD_DISCONNECT_POLARITY);



	if (hdmi_ctrl->hdmi_tx_hpd_done)

		hdmi_ctrl->hdmi_tx_hpd_done(hdmi_ctrl->downstream_data);



	return 0;

} /* hdmi_tx_power_on */

drivers/video/msm/mdss/mdss_hdmi_tx.h

+3 −0
Original line number Diff line number Diff line
@@ -84,6 +84,9 @@ struct hdmi_tx_ctrl { 


	struct hdmi_tx_ddc_ctrl ddc_ctrl;



	void (*hdmi_tx_hpd_done) (void *data);

	void *downstream_data;



	void *feature_data[HDMI_TX_FEAT_MAX];

};