Adding support for using MHL (SiI9234 or other) chip if its configuration was
passed to HDMI by platfrom data.
Signed-off-by: Tomasz Stanislawski <t.stanislaws@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
---
drivers/media/video/s5p-tv/hdmi_drv.c | 52 ++++++++++++++++++++++++++++----
1 files changed, 45 insertions(+), 7 deletions(-)
diff --git a/drivers/media/video/s5p-tv/hdmi_drv.c b/drivers/media/video/s5p-tv/hdmi_drv.c
index ab3a2d3..ddb9fb6 100644
--- a/drivers/media/video/s5p-tv/hdmi_drv.c
+++ b/drivers/media/video/s5p-tv/hdmi_drv.c
@@ -67,6 +67,8 @@ struct hdmi_device {
struct v4l2_device v4l2_dev;
/** subdev of HDMIPHY interface */
struct v4l2_subdev *phy_sd;
+ /** subdev of MHL interface */
+ struct v4l2_subdev *mhl_sd;
/** configuration of current graphic mode */
const struct hdmi_preset_conf *cur_conf;
/** current preset */
@@ -572,7 +574,15 @@ static int hdmi_streamon(struct hdmi_device *hdev)
if (tries == 0) {
dev_err(dev, "hdmiphy's pll could not reach steady state.\n");
v4l2_subdev_call(hdev->phy_sd, video, s_stream, 0);
- hdmi_dumpregs(hdev, "s_stream");
+ hdmi_dumpregs(hdev, "hdmiphy - s_stream");
+ return -EIO;
+ }
+
+ /* starting MHL */
+ ret = v4l2_subdev_call(hdev->mhl_sd, video, s_stream, 1);
+ if (hdev->mhl_sd && ret) {
+ v4l2_subdev_call(hdev->phy_sd, video, s_stream, 0);
+ hdmi_dumpregs(hdev, "mhl - s_stream");
return -EIO;
}
@@ -603,6 +613,7 @@ static int hdmi_streamoff(struct hdmi_device *hdev)
clk_set_parent(res->sclk_hdmi, res->sclk_pixel);
clk_enable(res->sclk_hdmi);
+ v4l2_subdev_call(hdev->mhl_sd, video, s_stream, 0);
v4l2_subdev_call(hdev->phy_sd, video, s_stream, 0);
hdmi_dumpregs(hdev, "streamoff");
@@ -724,6 +735,7 @@ static int hdmi_runtime_suspend(struct device *dev)
struct hdmi_device *hdev = sd_to_hdmi_dev(sd);
dev_dbg(dev, "%s\n", __func__);
+ v4l2_subdev_call(hdev->mhl_sd, core, s_power, 0);
hdmi_resource_poweroff(&hdev->res);
return 0;
}
@@ -742,6 +754,11 @@ static int hdmi_runtime_resume(struct device *dev)
if (ret)
goto fail;
+ /* starting MHL */
+ ret = v4l2_subdev_call(hdev->mhl_sd, core, s_power, 1);
+ if (hdev->mhl_sd && ret)
+ goto fail;
+
dev_dbg(dev, "poweron succeed\n");
return 0;
@@ -852,7 +869,7 @@ static int __devinit hdmi_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct resource *res;
- struct i2c_adapter *phy_adapter;
+ struct i2c_adapter *adapter;
struct v4l2_subdev *sd;
struct hdmi_device *hdmi_dev = NULL;
struct s5p_hdmi_platform_data *pdata = dev->platform_data;
@@ -925,23 +942,44 @@ static int __devinit hdmi_probe(struct platform_device *pdev)
goto fail_vdev;
}
- phy_adapter = i2c_get_adapter(pdata->hdmiphy_bus);
- if (phy_adapter == NULL) {
- dev_err(dev, "adapter request failed\n");
+ adapter = i2c_get_adapter(pdata->hdmiphy_bus);
+ if (adapter == NULL) {
+ dev_err(dev, "hdmiphy adapter request failed\n");
ret = -ENXIO;
goto fail_vdev;
}
hdmi_dev->phy_sd = v4l2_i2c_new_subdev_board(&hdmi_dev->v4l2_dev,
- phy_adapter, pdata->hdmiphy_info, NULL);
+ adapter, pdata->hdmiphy_info, NULL);
/* on failure or not adapter is no longer useful */
- i2c_put_adapter(phy_adapter);
+ i2c_put_adapter(adapter);
if (hdmi_dev->phy_sd == NULL) {
dev_err(dev, "missing subdev for hdmiphy\n");
ret = -ENODEV;
goto fail_vdev;
}
+ /* initialization of MHL interface if present */
+ if (pdata->mhl_info) {
+ adapter = i2c_get_adapter(pdata->mhl_bus);
+ if (adapter == NULL) {
+ dev_err(dev, "MHL adapter request failed\n");
+ ret = -ENXIO;
+ goto fail_vdev;
+ }
+
+ hdmi_dev->mhl_sd = v4l2_i2c_new_subdev_board(
+ &hdmi_dev->v4l2_dev, adapter,
+ pdata->mhl_info, NULL);
+ /* on failure or not adapter is no longer useful */
+ i2c_put_adapter(adapter);
+ if (hdmi_dev->mhl_sd == NULL) {
+ dev_err(dev, "missing subdev for MHL\n");
+ ret = -ENODEV;
+ goto fail_vdev;
+ }
+ }
+
clk_enable(hdmi_dev->res.hdmi);
pm_runtime_enable(dev);
--
1.7.5.4
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