[PATCH] media: atmel-isi: parse the DT parameters for vsync/hsync polarity

[Josh Wu]

This patch will get the DT parameters of vsync/hsync polarity, and pass to
the platform data.

Also add a debug information for test purpose.

Signed-off-by: Josh Wu <josh.wu at atmel.com>
---

 drivers/media/platform/soc_camera/atmel-isi.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/media/platform/soc_camera/atmel-isi.c b/drivers/media/platform/soc_camera/atmel-isi.c
index fe9247a..a7de55c 100644
--- a/drivers/media/platform/soc_camera/atmel-isi.c
+++ b/drivers/media/platform/soc_camera/atmel-isi.c
@@ -811,6 +811,11 @@ static int isi_camera_set_bus_param(struct soc_camera_device *icd)
 	if (common_flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)
 		cfg1 |= ISI_CFG1_PIXCLK_POL_ACTIVE_FALLING;
 
+	dev_dbg(icd->parent, "vsync is active %s, hsyc is active %s, pix clock is sampling %s\n",
+		common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW ? "low" : "high",
+		common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW ? "low" : "high",
+		common_flags & V4L2_MBUS_PCLK_SAMPLE_FALLING ? "fall" : "rise");
+
 	if (isi->pdata.has_emb_sync)
 		cfg1 |= ISI_CFG1_EMB_SYNC;
 	if (isi->pdata.full_mode)
@@ -898,6 +903,11 @@ static int atmel_isi_probe_dt(struct atmel_isi *isi,
 		goto err_probe_dt;
 	}
 
+	if (ep.bus.parallel.flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)
+		isi->pdata.hsync_act_low = true;
+	if (ep.bus.parallel.flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
+		isi->pdata.vsync_act_low = true;
+
 err_probe_dt:
 	of_node_put(np);
 
-- 
1.9.1