[PATCH v3 05/13] [media] mtk-mipicsi: get the w/h/bytepwerline for mtk_mipicsi

Stu Hsieh
2019-05-14T06:15:35Z

This patch get the w/h/bytepwerline to save in mtk_mipicsi.

Signed-off-by: Stu Hsieh <stu.hsieh@mediatek.com>
---
.../media/platform/mtk-mipicsi/mtk_mipicsi.c | 41 +++++++++++++++++++
1 file changed, 41 insertions(+)

diff --git a/drivers/media/platform/mtk-mipicsi/mtk_mipicsi.c b/drivers/media/platform/mtk-mipicsi/mtk_mipicsi.c
index 9c65b96456c4..920848e965e3 100644
--- a/drivers/media/platform/mtk-mipicsi/mtk_mipicsi.c
+++ b/drivers/media/platform/mtk-mipicsi/mtk_mipicsi.c
@@ -132,6 +132,9 @@ struct mtk_mipicsi_dev {
u32 id;
int clk_num;
struct clk *clk[MIPICSI_CLK];
+ u32 width;
+ u32 height;
+ u32 bytesperline;
};

#define MTK_MIPICSI_BUS_PARAM (V4L2_MBUS_MASTER | \
@@ -143,13 +146,36 @@ struct mtk_mipicsi_dev {
V4L2_MBUS_PCLK_SAMPLE_FALLING | \
V4L2_MBUS_DATA_ACTIVE_HIGH)

+static u32 get_bytesperline(const u32 fmt, const u32 width)
+{
+ u32 bytesperline = 0;
+
+ switch (fmt) {
+ case MEDIA_BUS_FMT_UYVY8_2X8:
+ case MEDIA_BUS_FMT_VYUY8_2X8:
+ case MEDIA_BUS_FMT_YUYV8_2X8:
+ case MEDIA_BUS_FMT_YVYU8_2X8:
+ bytesperline = width * 2U;
+ break;
+ default:
+ break;
+ }
+
+ return bytesperline;
+}
+
static int mtk_mipicsi_add_device(struct soc_camera_device *icd)
{
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ struct mtk_mipicsi_dev *mipicsi = ici->priv;
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
struct v4l2_subdev_format format = {
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
};
int ret;
+ u32 width;
+ u32 height;
+ u32 fmt;

/* Get width/height info from subdev. Then use them to set register */
ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &format);
@@ -158,6 +184,21 @@ static int mtk_mipicsi_add_device(struct soc_camera_device *icd)
return ret;
}

+ width = format.format.width;
+ height = format.format.height;
+ fmt = format.format.code;
+ mipicsi->bytesperline = get_bytesperline(fmt, width);
+ if ((width == 0U) || (width > MAX_SUPPORT_WIDTH) ||
+ (height == 0U) || (height > MAX_SUPPORT_HEIGHT) ||
+ (mipicsi->bytesperline == 0U)) {
+ dev_err(icd->parent, "invalid sub device width/height/bytesperline %d/%d/%d\n",
+ width, height, mipicsi->bytesperline);
+ return -EINVAL;
+ }
+
+ mipicsi->width = width;
+ mipicsi->height = height;
+
/*
* If power domain was closed before, it will be open.
* Then clock will be open and register will be set
--
2.18.0