linux-kernel - [PATCH v2 9/9] media: platform: mtk-mdp3: extend shared memory structure to 4-byte aligned

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Date:   Thu, 20 Oct 2022 15:39:02 +0800
From:   Moudy Ho <moudy.ho@...iatek.com>
To:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Hans Verkuil <hverkuil-cisco@...all.nl>
CC:     Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        <linux-media@...r.kernel.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        <Project_Global_Chrome_Upstream_Group@...iatek.com>,
        Moudy Ho <moudy.ho@...iatek.com>
Subject: [PATCH v2 9/9] media: platform: mtk-mdp3: extend shared memory structure to 4-byte aligned

The common header "mtk-img-ipi.h" defines the input frame parameters used to
pass to SCP for components config calculations.

However, there is a 4-byte read limit in further SCP hardware, so the
data structure should be aligned.

Signed-off-by: Moudy Ho <moudy.ho@...iatek.com>
---
 .../platform/mediatek/mdp3/mtk-img-ipi.h      | 50 +++++++++----------
 1 file changed, 25 insertions(+), 25 deletions(-)

diff --git a/drivers/media/platform/mediatek/mdp3/mtk-img-ipi.h b/drivers/media/platform/mediatek/mdp3/mtk-img-ipi.h
index fcd6f7dd39fc..5b99d3505f9b 100644
--- a/drivers/media/platform/mediatek/mdp3/mtk-img-ipi.h
+++ b/drivers/media/platform/mediatek/mdp3/mtk-img-ipi.h
@@ -47,14 +47,14 @@ struct img_sw_addr {
 
 struct img_plane_format {
 	u32 size;
-	u16 stride;
+	u32 stride;
 } __packed;
 
 struct img_pix_format {
-	u16 width;
-	u16 height;
+	u32 width;
+	u32 height;
 	u32 colorformat; /* enum mdp_color */
-	u16 ycbcr_prof; /* enum mdp_ycbcr_profile */
+	u32 ycbcr_prof; /* enum mdp_ycbcr_profile */
 	struct img_plane_format plane_fmt[IMG_MAX_PLANES];
 } __packed;
 
@@ -68,10 +68,10 @@ struct img_image_buffer {
 #define IMG_SUBPIXEL_SHIFT	20
 
 struct img_crop {
-	s16 left;
-	s16 top;
-	u16 width;
-	u16 height;
+	s32 left;
+	s32 top;
+	u32 width;
+	u32 height;
 	u32 left_subpix;
 	u32 top_subpix;
 	u32 width_subpix;
@@ -86,24 +86,24 @@ struct img_crop {
 
 struct img_input {
 	struct img_image_buffer buffer;
-	u16 flags; /* HDR, DRE, dither */
+	u32 flags; /* HDR, DRE, dither */
 } __packed;
 
 struct img_output {
 	struct img_image_buffer buffer;
 	struct img_crop crop;
-	s16 rotation;
-	u16 flags; /* H-flip, sharpness, dither */
+	s32 rotation;
+	u32 flags; /* H-flip, sharpness, dither */
 } __packed;
 
 struct img_ipi_frameparam {
 	u32 index;
 	u32 frame_no;
 	struct img_timeval timestamp;
-	u8 type; /* enum mdp_stream_type */
-	u8 state;
-	u8 num_inputs;
-	u8 num_outputs;
+	u32 type; /* enum mdp_stream_type */
+	u32 state;
+	u32 num_inputs;
+	u32 num_outputs;
 	u64 drv_data;
 	struct img_input inputs[IMG_MAX_HW_INPUTS];
 	struct img_output outputs[IMG_MAX_HW_OUTPUTS];
@@ -119,25 +119,25 @@ struct img_sw_buffer {
 } __packed;
 
 struct img_ipi_param {
-	u8 usage;
+	u32 usage;
 	struct img_sw_buffer frm_param;
 } __packed;
 
 struct img_frameparam {
 	struct list_head list_entry;
 	struct img_ipi_frameparam frameparam;
-};
+} __packed;
 
 struct img_region {
-	s16 left;
-	s16 right;
-	s16 top;
-	s16 bottom;
+	s32 left;
+	s32 right;
+	s32 top;
+	s32 bottom;
 } __packed;
 
 struct img_offset {
-	s16 left;
-	s16 top;
+	s32 left;
+	s32 top;
 	u32 left_subpix;
 	u32 top_subpix;
 } __packed;
@@ -148,11 +148,11 @@ struct img_mux {
 	u32 reg;
 	u32 value;
 	u32 subsys_id;
-};
+} __packed;
 
 struct img_mmsys_ctrl {
 	struct img_mux sets[IMG_MAX_COMPONENTS * 2];
 	u32 num_sets;
-};
+} __packed;
 
 #endif  /* __MTK_IMG_IPI_H__ */
-- 
2.18.0