linux-kernel - [PATCH 04/14] media: sun6i-csi: Fix the image storage bpp for 10/12-bit Bayer formats

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Date:   Fri, 23 Oct 2020 19:45:36 +0200
From:   Paul Kocialkowski <paul.kocialkowski@...tlin.com>
To:     linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devel@...verdev.osuosl.org, linux-sunxi@...glegroups.com
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Maxime Ripard <mripard@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Yong Deng <yong.deng@...ewell.com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Vinod Koul <vkoul@...nel.org>,
        Helen Koike <helen.koike@...labora.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Paul Kocialkowski <paul.kocialkowski@...tlin.com>,
        Hans Verkuil <hans.verkuil@...co.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Hans Verkuil <hverkuil@...all.nl>, kevin.lhopital@...mail.com,
        Kévin L'hôpital 
        <kevin.lhopital@...tlin.com>
Subject: [PATCH 04/14] media: sun6i-csi: Fix the image storage bpp for 10/12-bit Bayer formats

Both 10 and 12-bit Bayer formats are stored aligned as 16-bit values
in memory, not unaligned 10 or 12 bits.

Since the current code for retreiving the bpp is used only to
calculate the memory storage size of the picture (which is what
pixel formats describe, unlike media bus formats), fix it there.

Fixes: 5cc7522d8965 ("media: sun6i: Add support for Allwinner CSI V3s")
Co-developed-by: Kévin L'hôpital <kevin.lhopital@...tlin.com>
Signed-off-by: Kévin L'hôpital <kevin.lhopital@...tlin.com>
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@...tlin.com>
---
 .../platform/sunxi/sun6i-csi/sun6i_csi.h      | 20 +++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h
index c626821aaedb..7f2be70ae641 100644
--- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h
+++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h
@@ -86,7 +86,7 @@ void sun6i_csi_update_buf_addr(struct sun6i_csi *csi, dma_addr_t addr);
  */
 void sun6i_csi_set_stream(struct sun6i_csi *csi, bool enable);
 
-/* get bpp form v4l2 pixformat */
+/* get memory storage bpp from v4l2 pixformat */
 static inline int sun6i_csi_get_bpp(unsigned int pixformat)
 {
 	switch (pixformat) {
@@ -96,15 +96,6 @@ static inline int sun6i_csi_get_bpp(unsigned int pixformat)
 	case V4L2_PIX_FMT_SRGGB8:
 	case V4L2_PIX_FMT_JPEG:
 		return 8;
-	case V4L2_PIX_FMT_SBGGR10:
-	case V4L2_PIX_FMT_SGBRG10:
-	case V4L2_PIX_FMT_SGRBG10:
-	case V4L2_PIX_FMT_SRGGB10:
-		return 10;
-	case V4L2_PIX_FMT_SBGGR12:
-	case V4L2_PIX_FMT_SGBRG12:
-	case V4L2_PIX_FMT_SGRBG12:
-	case V4L2_PIX_FMT_SRGGB12:
 	case V4L2_PIX_FMT_HM12:
 	case V4L2_PIX_FMT_NV12:
 	case V4L2_PIX_FMT_NV21:
@@ -121,6 +112,15 @@ static inline int sun6i_csi_get_bpp(unsigned int pixformat)
 	case V4L2_PIX_FMT_RGB565:
 	case V4L2_PIX_FMT_RGB565X:
 		return 16;
+	case V4L2_PIX_FMT_SBGGR10:
+	case V4L2_PIX_FMT_SGBRG10:
+	case V4L2_PIX_FMT_SGRBG10:
+	case V4L2_PIX_FMT_SRGGB10:
+	case V4L2_PIX_FMT_SBGGR12:
+	case V4L2_PIX_FMT_SGBRG12:
+	case V4L2_PIX_FMT_SGRBG12:
+	case V4L2_PIX_FMT_SRGGB12:
+		return 16;
 	case V4L2_PIX_FMT_RGB24:
 	case V4L2_PIX_FMT_BGR24:
 		return 24;
-- 
2.28.0