[PATCH 12/26] gpu: ipu-v3: Add helper function checking if pixfmt is planar

[Philipp Zabel]

From: Steve Longerbeam <slongerbeam at gmail.com>

Add simple helper function returning true if passed pixel format is one
of supported planar ones.

Signed-off-by: Dmitry Eremin-Solenikov <dmitry_eremin at mentor.com>
Signed-off-by: Philipp Zabel <p.zabel at pengutronix.de>
---
 drivers/gpu/ipu-v3/ipu-common.c | 12 ++++++++++++
 include/video/imx-ipu-v3.h      |  1 +
 2 files changed, 13 insertions(+)

diff --git a/drivers/gpu/ipu-v3/ipu-common.c b/drivers/gpu/ipu-v3/ipu-common.c
index a1d42ee..18563c2 100644
--- a/drivers/gpu/ipu-v3/ipu-common.c
+++ b/drivers/gpu/ipu-v3/ipu-common.c
@@ -101,6 +101,18 @@ enum ipu_color_space ipu_pixelformat_to_colorspace(u32 pixelformat)
 }
 EXPORT_SYMBOL_GPL(ipu_pixelformat_to_colorspace);
 
+bool ipu_pixelformat_is_planar(u32 pixelformat)
+{
+	switch (pixelformat) {
+	case V4L2_PIX_FMT_YUV420:
+	case V4L2_PIX_FMT_YVU420:
+		return true;
+	}
+
+	return false;
+}
+EXPORT_SYMBOL_GPL(ipu_pixelformat_is_planar);
+
 enum ipu_color_space ipu_mbus_code_to_colorspace(u32 mbus_code)
 {
 	switch (mbus_code & 0xf000) {
diff --git a/include/video/imx-ipu-v3.h b/include/video/imx-ipu-v3.h
index c44cc0f..dbf5d3d 100644
--- a/include/video/imx-ipu-v3.h
+++ b/include/video/imx-ipu-v3.h
@@ -337,6 +337,7 @@ int ipu_smfc_set_watermark(struct ipu_smfc *smfc, u32 set_level, u32 clr_level);
 enum ipu_color_space ipu_drm_fourcc_to_colorspace(u32 drm_fourcc);
 enum ipu_color_space ipu_pixelformat_to_colorspace(u32 pixelformat);
 enum ipu_color_space ipu_mbus_code_to_colorspace(u32 mbus_code);
+bool ipu_pixelformat_is_planar(u32 pixelformat);
 int ipu_degrees_to_rot_mode(enum ipu_rotate_mode *mode, int degrees,
 			    bool hflip, bool vflip);
 int ipu_rot_mode_to_degrees(int *degrees, enum ipu_rotate_mode mode,
-- 
2.1.0.rc1