diff options
| -rw-r--r-- | drivers/media/video/s5p-tv/hdmi_drv.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/drivers/media/video/s5p-tv/hdmi_drv.c b/drivers/media/video/s5p-tv/hdmi_drv.c index eefb903313c3..20cb6eef2979 100644 --- a/drivers/media/video/s5p-tv/hdmi_drv.c +++ b/drivers/media/video/s5p-tv/hdmi_drv.c @@ -87,6 +87,8 @@ struct hdmi_device { struct v4l2_subdev *mhl_sd; /** configuration of current graphic mode */ const struct hdmi_timings *cur_conf; + /** flag indicating that timings are dirty */ + int cur_conf_dirty; /** current preset */ u32 cur_preset; /** other resources */ @@ -253,6 +255,10 @@ static int hdmi_conf_apply(struct hdmi_device *hdmi_dev) dev_dbg(dev, "%s\n", __func__); + /* skip if conf is already synchronized with HW */ + if (!hdmi_dev->cur_conf_dirty) + return 0; + /* reset hdmiphy */ hdmi_write_mask(hdmi_dev, HDMI_PHY_RSTOUT, ~0, HDMI_PHY_SW_RSTOUT); mdelay(10); @@ -278,6 +284,8 @@ static int hdmi_conf_apply(struct hdmi_device *hdmi_dev) /* setting core registers */ hdmi_timing_apply(hdmi_dev, conf); + hdmi_dev->cur_conf_dirty = 0; + return 0; } @@ -500,6 +508,10 @@ static int hdmi_streamon(struct hdmi_device *hdev) dev_dbg(dev, "%s\n", __func__); + ret = hdmi_conf_apply(hdev); + if (ret) + return ret; + ret = v4l2_subdev_call(hdev->phy_sd, video, s_stream, 1); if (ret) return ret; @@ -620,6 +632,7 @@ static int hdmi_s_dv_preset(struct v4l2_subdev *sd, return -EINVAL; } hdev->cur_conf = conf; + hdev->cur_conf_dirty = 1; hdev->cur_preset = preset->preset; return 0; } @@ -689,6 +702,8 @@ static int hdmi_runtime_suspend(struct device *dev) dev_dbg(dev, "%s\n", __func__); v4l2_subdev_call(hdev->mhl_sd, core, s_power, 0); hdmi_resource_poweroff(&hdev->res); + /* flag that device context is lost */ + hdev->cur_conf_dirty = 1; return 0; } @@ -702,10 +717,6 @@ static int hdmi_runtime_resume(struct device *dev) hdmi_resource_poweron(&hdev->res); - ret = hdmi_conf_apply(hdev); - if (ret) - goto fail; - /* starting MHL */ ret = v4l2_subdev_call(hdev->mhl_sd, core, s_power, 1); if (hdev->mhl_sd && ret) @@ -946,6 +957,7 @@ static int __devinit hdmi_probe(struct platform_device *pdev) hdmi_dev->cur_preset = HDMI_DEFAULT_PRESET; /* FIXME: missing fail preset is not supported */ hdmi_dev->cur_conf = hdmi_preset2timings(hdmi_dev->cur_preset); + hdmi_dev->cur_conf_dirty = 1; /* storing subdev for call that have only access to struct device */ dev_set_drvdata(dev, sd); |