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Commit 683b047d authored by Ajay Singh Parmar's avatar Ajay Singh Parmar
Browse files

msm: mdss: dp: add connected sysfs node 



Add sysfs node to provide the status of display-port's cable
connection. Framework may query about the interface connection
status before powering it on.

Change-Id: I43d0d18b875c4516727f91c57cfb571e3ac91706
Signed-off-by: default avatarAjay Singh Parmar <aparmar@codeaurora.org>
parent 68b90105

drivers/video/fbdev/msm/mdss_dp.c

+65 −0
Original line number Diff line number Diff line
@@ -1310,6 +1310,70 @@ error: 
	return rc;

}



static struct mdss_dp_drv_pdata *mdss_dp_get_drvdata(struct device *device)

{

	struct msm_fb_data_type *mfd;

	struct mdss_panel_data *pd;

	struct mdss_dp_drv_pdata *dp = NULL;

	struct fb_info *fbi = dev_get_drvdata(device);



	if (fbi) {

		mfd = (struct msm_fb_data_type *)fbi->par;

		pd = dev_get_platdata(&mfd->pdev->dev);



		dp = container_of(pd, struct mdss_dp_drv_pdata, panel_data);

	}



	return dp;

}



static ssize_t mdss_dp_rda_connected(struct device *dev,

	struct device_attribute *attr, char *buf)

{

	ssize_t ret;

	struct mdss_dp_drv_pdata *dp = mdss_dp_get_drvdata(dev);



	if (!dp)

		return -EINVAL;



	ret = snprintf(buf, PAGE_SIZE, "%d\n", dp->cable_connected);

	pr_debug("%d\n", dp->cable_connected);



	return ret;

}

static DEVICE_ATTR(connected, S_IRUGO, mdss_dp_rda_connected, NULL);



static struct attribute *mdss_dp_fs_attrs[] = {

	&dev_attr_connected.attr,

	NULL,

};



static struct attribute_group mdss_dp_fs_attrs_group = {

	.attrs = mdss_dp_fs_attrs,

};



static int mdss_dp_sysfs_create(struct mdss_dp_drv_pdata *dp,

	struct fb_info *fbi)

{

	int rc;



	if (!dp || !fbi) {

		pr_err("ivalid input\n");

		return -ENODEV;

	}



	rc = sysfs_create_group(&fbi->dev->kobj,

		&mdss_dp_fs_attrs_group);

	if (rc) {

		pr_err("failed, rc=%d\n", rc);

		return rc;

	}



	pr_debug("sysfs ceated\n");



	return 0;

}



static int mdss_dp_event_handler(struct mdss_panel_data *pdata,

				  int event, void *arg)

{
@@ -1354,6 +1418,7 @@ static int mdss_dp_event_handler(struct mdss_panel_data *pdata, 


		dp->kobj = &fbi->dev->kobj;

		dp->fb_node = fbi->node;

		mdss_dp_sysfs_create(dp, fbi);

		mdss_dp_edid_init(pdata);

		mdss_dp_hdcp_init(pdata);

		mdss_dp_register_switch_event(dp);