[media] media: mx2_camera: Fix mbus format handling

Remove MX2_CAMERA_SWAP16 and MX2_CAMERA_PACK_DIR_MSB flags
so that the driver can negotiate with the attached sensor
whether the mbus format needs convertion from UYUV to YUYV
or not.

Signed-off-by: Javier Martin <javier.martin@vista-silicon.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/arch/arm/plat-mxc/include/mach/mx2_cam.h b/arch/arm/plat-mxc/include/mach/mx2_cam.h
index 3c080a3..7ded6f1 100644 (file)
--- a/arch/arm/plat-mxc/include/mach/mx2_cam.h
+++ b/arch/arm/plat-mxc/include/mach/mx2_cam.h
@@ -23,7 +23,6 @@
 #ifndef __MACH_MX2_CAM_H_
 #define __MACH_MX2_CAM_H_
 
-#define MX2_CAMERA_SWAP16              (1 << 0)
 #define MX2_CAMERA_EXT_VSYNC           (1 << 1)
 #define MX2_CAMERA_CCIR                        (1 << 2)
 #define MX2_CAMERA_CCIR_INTERLACE      (1 << 3)
@@ -31,7 +30,6 @@
 #define MX2_CAMERA_GATED_CLOCK         (1 << 5)
 #define MX2_CAMERA_INV_DATA            (1 << 6)
 #define MX2_CAMERA_PCLK_SAMPLE_RISING  (1 << 7)
-#define MX2_CAMERA_PACK_DIR_MSB                (1 << 8)
 
 /**
  * struct mx2_camera_platform_data - optional platform data for mx2_camera

diff --git a/drivers/media/video/mx2_camera.c b/drivers/media/video/mx2_camera.c
index 18afaee..7c3c0e8 100644 (file)
--- a/drivers/media/video/mx2_camera.c
+++ b/drivers/media/video/mx2_camera.c
@@ -344,6 +344,19 @@ static struct mx2_fmt_cfg mx27_emma_prp_table[] = {
                                        PRP_INTR_CH2OVF,
                }
        },
+       {
+               .in_fmt         = V4L2_MBUS_FMT_UYVY8_2X8,
+               .out_fmt        = V4L2_PIX_FMT_YUV420,
+               .cfg            = {
+                       .channel        = 2,
+                       .in_fmt         = PRP_CNTL_DATA_IN_YUV422,
+                       .out_fmt        = PRP_CNTL_CH2_OUT_YUV420,
+                       .src_pixel      = 0x22000888, /* YUV422 (YUYV) */
+                       .irq_flags      = PRP_INTR_RDERR | PRP_INTR_CH2WERR |
+                                       PRP_INTR_CH2FC | PRP_INTR_LBOVF |
+                                       PRP_INTR_CH2OVF,
+               }
+       },
 };
 
 static struct mx2_fmt_cfg *mx27_emma_prp_get_format(
@@ -980,6 +993,7 @@ static int mx2_camera_set_bus_param(struct soc_camera_device *icd)
        struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
        struct mx2_camera_dev *pcdev = ici->priv;
        struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,};
+       const struct soc_camera_format_xlate *xlate;
        unsigned long common_flags;
        int ret;
        int bytesperline;
@@ -1024,14 +1038,31 @@ static int mx2_camera_set_bus_param(struct soc_camera_device *icd)
                return ret;
        }
 
+       xlate = soc_camera_xlate_by_fourcc(icd, pixfmt);
+       if (!xlate) {
+               dev_warn(icd->parent, "Format %x not found\n", pixfmt);
+               return -EINVAL;
+       }
+
+       if (xlate->code == V4L2_MBUS_FMT_YUYV8_2X8) {
+               csicr1 |= CSICR1_PACK_DIR;
+               csicr1 &= ~CSICR1_SWAP16_EN;
+               dev_dbg(icd->parent, "already yuyv format, don't convert\n");
+       } else if (xlate->code == V4L2_MBUS_FMT_UYVY8_2X8) {
+               csicr1 &= ~CSICR1_PACK_DIR;
+               csicr1 |= CSICR1_SWAP16_EN;
+               dev_dbg(icd->parent, "convert uyvy mbus format into yuyv\n");
+       } else {
+               dev_warn(icd->parent, "mbus format not supported\n");
+               return -EINVAL;
+       }
+
        if (common_flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
                csicr1 |= CSICR1_REDGE;
        if (common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
                csicr1 |= CSICR1_SOF_POL;
        if (common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
                csicr1 |= CSICR1_HSYNC_POL;
-       if (pcdev->platform_flags & MX2_CAMERA_SWAP16)
-               csicr1 |= CSICR1_SWAP16_EN;
        if (pcdev->platform_flags & MX2_CAMERA_EXT_VSYNC)
                csicr1 |= CSICR1_EXT_VSYNC;
        if (pcdev->platform_flags & MX2_CAMERA_CCIR)
@@ -1042,8 +1073,6 @@ static int mx2_camera_set_bus_param(struct soc_camera_device *icd)
                csicr1 |= CSICR1_GCLK_MODE;
        if (pcdev->platform_flags & MX2_CAMERA_INV_DATA)
                csicr1 |= CSICR1_INV_DATA;
-       if (pcdev->platform_flags & MX2_CAMERA_PACK_DIR_MSB)
-               csicr1 |= CSICR1_PACK_DIR;
 
        pcdev->csicr1 = csicr1;
 
@@ -1118,7 +1147,8 @@ static int mx2_camera_get_formats(struct soc_camera_device *icd,
                return 0;
        }
 
-       if (code == V4L2_MBUS_FMT_YUYV8_2X8) {
+       if (code == V4L2_MBUS_FMT_YUYV8_2X8 ||
+           code == V4L2_MBUS_FMT_UYVY8_2X8) {
                formats++;
                if (xlate) {
                        /*
@@ -1134,6 +1164,18 @@ static int mx2_camera_get_formats(struct soc_camera_device *icd,
                }
        }
 
+       if (code == V4L2_MBUS_FMT_UYVY8_2X8) {
+               formats++;
+               if (xlate) {
+                       xlate->host_fmt =
+                               soc_mbus_get_fmtdesc(V4L2_MBUS_FMT_YUYV8_2X8);
+                       xlate->code     = code;
+                       dev_dbg(dev, "Providing host format %s for sensor code %d\n",
+                               xlate->host_fmt->name, code);
+                       xlate++;
+               }
+       }
+
        /* Generic pass-trough */
        formats++;
        if (xlate) {