[media] media: coda: add horizontal / vertical flipping support

The hardware can also rotate in 90° steps, but there is no
corresponding V4L2_CID defined yet.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Tested-by: Javier Martin <javier.martin@vista-silicon.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

2 files changed, 27 insertions, 1 deletions

diff --git a/drivers/media/platform/coda.c b/drivers/media/platform/coda.c
index 2e046d057e66..23985b3447ac 100644
--- a/drivers/media/platform/coda.c
+++ b/drivers/media/platform/coda.c
@@ -141,6 +141,7 @@ struct coda_dev {
 };
 
 struct coda_params {
+        u8                      rot_mode;
         u8                      h264_intra_qp;
         u8                      h264_inter_qp;
         u8                      mpeg4_intra_qp;
@@ -700,7 +701,7 @@ static void coda_device_run(void *m2m_priv)
         }
 
         /* submit */
-        coda_write(dev, 0, CODA_CMD_ENC_PIC_ROT_MODE);
+        coda_write(dev, CODA_ROT_MIR_ENABLE | ctx->params.rot_mode, CODA_CMD_ENC_PIC_ROT_MODE);
         coda_write(dev, quant_param, CODA_CMD_ENC_PIC_QS);
 
 
@@ -1276,6 +1277,18 @@ static int coda_s_ctrl(struct v4l2_ctrl *ctrl)
                  "s_ctrl: id = %d, val = %d\n", ctrl->id, ctrl->val);
 
         switch (ctrl->id) {
+        case V4L2_CID_HFLIP:
+                if (ctrl->val)
+                        ctx->params.rot_mode |= CODA_MIR_HOR;
+                else
+                        ctx->params.rot_mode &= ~CODA_MIR_HOR;
+                break;
+        case V4L2_CID_VFLIP:
+                if (ctrl->val)
+                        ctx->params.rot_mode |= CODA_MIR_VER;
+                else
+                        ctx->params.rot_mode &= ~CODA_MIR_VER;
+                break;
         case V4L2_CID_MPEG_VIDEO_BITRATE:
                 ctx->params.bitrate = ctrl->val / 1000;
                 break;
@@ -1321,6 +1334,10 @@ static int coda_ctrls_setup(struct coda_ctx *ctx)
         v4l2_ctrl_handler_init(&ctx->ctrls, 9);
 
         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
+                V4L2_CID_HFLIP, 0, 1, 1, 0);
+        v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
+                V4L2_CID_VFLIP, 0, 1, 1, 0);
+        v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
                 V4L2_CID_MPEG_VIDEO_BITRATE, 0, 32767000, 1, 0);
         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
                 V4L2_CID_MPEG_VIDEO_GOP_SIZE, 1, 60, 1, 16);
diff --git a/drivers/media/platform/coda.h b/drivers/media/platform/coda.h
index 332401033194..f3f5e43c1ac2 100644
--- a/drivers/media/platform/coda.h
+++ b/drivers/media/platform/coda.h
@@ -188,6 +188,15 @@
 #define CODA_CMD_ENC_PIC_SRC_ADDR_CR    0x188
 #define CODA_CMD_ENC_PIC_QS             0x18c
 #define CODA_CMD_ENC_PIC_ROT_MODE       0x190
+#define         CODA_ROT_MIR_ENABLE                             (1 << 4)
+#define         CODA_ROT_0                                      (0x0 << 0)
+#define         CODA_ROT_90                                     (0x1 << 0)
+#define         CODA_ROT_180                                    (0x2 << 0)
+#define         CODA_ROT_270                                    (0x3 << 0)
+#define         CODA_MIR_NONE                                   (0x0 << 2)
+#define         CODA_MIR_VER                                    (0x1 << 2)
+#define         CODA_MIR_HOR                                    (0x2 << 2)
+#define         CODA_MIR_VER_HOR                                (0x3 << 2)
 #define CODA_CMD_ENC_PIC_OPTION 0x194
 #define CODA_CMD_ENC_PIC_BB_START       0x198
 #define CODA_CMD_ENC_PIC_BB_SIZE        0x19c