evie/android_kernel_oneplus_msm8998
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msm: mdss: change dfps mode through framebuffer device node

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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: Huaibin Yang <huaibiny@codeaurora.org>
This commit is contained in:
Huaibin Yang 2015-02-25 23:43:31 -08:00 • committed by David Keitel
parent 5fb0d4488b
commit dcd8ca2739
2 changed files with 58 additions and 0 deletions
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57
drivers/video/fbdev/msm/mdss_fb.c
View file

@ -659,6 +659,60 @@ 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);
@ -673,6 +727,8 @@ 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,
@ -683,6 +739,7 @@ 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,
};

1
drivers/video/fbdev/msm/mdss_panel.h
View file

@ -330,6 +330,7 @@ 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 {