V4L/DVB (13665): sh_mobile_ceu_camera: Add support for sync polarity selection

Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/sh_mobile_ceu_camera.c

@@ -687,6 +687,23 @@ static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd,
 	if (!common_flags)
 		return -EINVAL;
 
+	/* Make choises, based on platform preferences */
+	if ((common_flags & SOCAM_HSYNC_ACTIVE_HIGH) &&
+	    (common_flags & SOCAM_HSYNC_ACTIVE_LOW)) {
+		if (pcdev->pdata->flags & SH_CEU_FLAG_HSYNC_LOW)
+			common_flags &= ~SOCAM_HSYNC_ACTIVE_HIGH;
+		else
+			common_flags &= ~SOCAM_HSYNC_ACTIVE_LOW;
+	}
+
+	if ((common_flags & SOCAM_VSYNC_ACTIVE_HIGH) &&
+	    (common_flags & SOCAM_VSYNC_ACTIVE_LOW)) {
+		if (pcdev->pdata->flags & SH_CEU_FLAG_VSYNC_LOW)
+			common_flags &= ~SOCAM_VSYNC_ACTIVE_HIGH;
+		else
+			common_flags &= ~SOCAM_VSYNC_ACTIVE_LOW;
+	}
+
 	ret = icd->ops->set_bus_param(icd, common_flags);
 	if (ret < 0)
 		return ret;

include/media/sh_mobile_ceu.h

@@ -3,6 +3,8 @@
 
 #define SH_CEU_FLAG_USE_8BIT_BUS	(1 << 0) /* use  8bit bus width */
 #define SH_CEU_FLAG_USE_16BIT_BUS	(1 << 1) /* use 16bit bus width */
+#define SH_CEU_FLAG_HSYNC_LOW		(1 << 2) /* default High if possible */
+#define SH_CEU_FLAG_VSYNC_LOW		(1 << 3) /* default High if possible */
 
 struct sh_mobile_ceu_info {
 	unsigned long flags;