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Commit 679b6a37 authored by Huaibin Yang's avatar Huaibin Yang
Browse files

msm: mdss: change dfps mode through framebuffer device node 



Dynamic refresh rate can be changed using different methods
(modes). This change adds the feature of changing the mode through
device node.

Change-Id: I8c402b535e0e867c5ab80cdf4ec35065828cc637
Signed-off-by: default avatarHuaibin Yang <huaibiny@codeaurora.org>
parent 20916112

drivers/video/msm/mdss/mdss_fb.c

+57 −0
Original line number Diff line number Diff line
@@ -635,6 +635,60 @@ static int mdss_fb_blanking_mode_switch(struct msm_fb_data_type *mfd, int mode) 
	return 0;

}



static ssize_t mdss_fb_change_dfps_mode(struct device *dev,

	struct device_attribute *attr, const char *buf, size_t len)

{

	struct fb_info *fbi = dev_get_drvdata(dev);

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

	struct mdss_panel_data *pdata;

	struct mdss_panel_info *pinfo;

	u32 dfps_mode;



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

	if (!pdata) {

		pr_err("no panel connected!\n");

		return len;

	}

	pinfo = &pdata->panel_info;



	if (sscanf(buf, "%d", &dfps_mode) != 1) {

		pr_err("sccanf buf error!\n");

		return len;

	}



	if (dfps_mode >= DFPS_MODE_MAX) {

		pinfo->dynamic_fps = false;

		return len;

	}



	pinfo->dynamic_fps = true;

	pinfo->dfps_update = dfps_mode;



	return len;

}



static ssize_t mdss_fb_get_dfps_mode(struct device *dev,

		struct device_attribute *attr, char *buf)

{

	struct fb_info *fbi = dev_get_drvdata(dev);

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

	struct mdss_panel_data *pdata;

	struct mdss_panel_info *pinfo;

	int ret;



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

	if (!pdata) {

		pr_err("no panel connected!\n");

		return -EINVAL;

	}

	pinfo = &pdata->panel_info;



	ret = scnprintf(buf, PAGE_SIZE, "dfps enabled=%d mode=%d\n",

		pinfo->dynamic_fps, pinfo->dfps_update);



	return ret;

}



static DEVICE_ATTR(msm_fb_type, S_IRUGO, mdss_fb_get_type, NULL);

static DEVICE_ATTR(msm_fb_split, S_IRUGO | S_IWUSR, mdss_fb_show_split,

					mdss_fb_store_split);
@@ -649,6 +703,8 @@ static DEVICE_ATTR(msm_fb_thermal_level, S_IRUGO | S_IWUSR, 
	mdss_fb_get_thermal_level, mdss_fb_set_thermal_level);

static DEVICE_ATTR(msm_fb_panel_status, S_IRUGO,

	mdss_fb_get_panel_status, NULL);

static DEVICE_ATTR(msm_fb_dfps_mode, S_IRUGO | S_IWUSR,

	mdss_fb_get_dfps_mode, mdss_fb_change_dfps_mode);

static struct attribute *mdss_fb_attrs[] = {

	&dev_attr_msm_fb_type.attr,

	&dev_attr_msm_fb_split.attr,
@@ -659,6 +715,7 @@ static struct attribute *mdss_fb_attrs[] = { 
	&dev_attr_msm_fb_src_split_info.attr,

	&dev_attr_msm_fb_thermal_level.attr,

	&dev_attr_msm_fb_panel_status.attr,

	&dev_attr_msm_fb_dfps_mode.attr,

	NULL,

};

drivers/video/msm/mdss/mdss_panel.h

+1 −0
Original line number Diff line number Diff line
@@ -325,6 +325,7 @@ enum dynamic_fps_update { 
	DFPS_IMMEDIATE_CLK_UPDATE_MODE,

	DFPS_IMMEDIATE_PORCH_UPDATE_MODE_VFP,

	DFPS_IMMEDIATE_PORCH_UPDATE_MODE_HFP,

	DFPS_MODE_MAX

};



enum lvds_mode {