MLK-19007-1: camera: add "QCIF, QVGA, NTSC, PAL, XGA, QSXGA" support

1. add resolution "QCIF, QVGA, NTSC, PAL, XGA, QSXGA" support for
parallel camera sensor driver

2. enable ISI channel line buffer chain when image having higher
than 2048 horizontal resolution

Signed-off-by: Guoniu.Zhou <guoniu.zhou@nxp.com>
Reviewed-by: Robby.Cai <robby.cai@nxp.com>

diff --git a/drivers/media/platform/imx8/mxc-isi-hw.c b/drivers/media/platform/imx8/mxc-isi-hw.c
index cfb3665..6ecfa7c 100644 (file)
--- a/drivers/media/platform/imx8/mxc-isi-hw.c
+++ b/drivers/media/platform/imx8/mxc-isi-hw.c
@@ -104,6 +104,23 @@ static bool is_yuv(u32 pix_fmt)
        }
 }
 
+static void chain_buf(struct mxc_isi_dev *mxc_isi)
+{
+       struct mxc_isi_frame *src_f = &mxc_isi->isi_cap.src_f;
+       u32 val;
+
+       if (src_f->o_width > 2048) {
+               val = readl(mxc_isi->regs + CHNL_CTRL);
+               val &= ~CHNL_CTRL_CHAIN_BUF_MASK;
+               val |= (CHNL_CTRL_CHAIN_BUF_2_CHAIN << CHNL_CTRL_CHAIN_BUF_OFFSET);
+               writel(val, mxc_isi->regs + CHNL_CTRL);
+       } else if (!mxc_isi->chain_buf) {
+               val = readl(mxc_isi->regs + CHNL_CTRL);
+               val &= ~CHNL_CTRL_CHAIN_BUF_MASK;
+               writel(val, mxc_isi->regs + CHNL_CTRL);
+       }
+}
+
 void mxc_isi_channel_set_outbuf(struct mxc_isi_dev *mxc_isi, struct mxc_isi_buffer *buf)
 {
        struct vb2_buffer *vb2_buf = &buf->v4l2_buf.vb2_buf;
@@ -508,6 +525,9 @@ void mxc_isi_channel_config(struct mxc_isi_dev *mxc_isi)
        struct mxc_isi_frame *src_f = &mxc_isi->isi_cap.src_f;
        u32 val;
 
+       /* images having higher than 2048 horizontal resolution */
+       chain_buf(mxc_isi);
+
        /* config output frame size and format */
        val = src_f->o_width | (src_f->o_height << CHNL_IMG_CFG_HEIGHT_OFFSET);
        writel(val, mxc_isi->regs + CHNL_IMG_CFG);