media: ov02c10: Support hflip and vflip

Support horizontal and vertical flip, which is necessary to handle
upside-down mounted sensors.

Suggested-by: Bryan O'Donoghue <bod@kernel.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Reviewed-by: Bryan O'Donoghue <bod@kernel.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>

diff --git a/drivers/media/i2c/ov02c10.c b/drivers/media/i2c/ov02c10.c
index 8e22ff446b0c4deb9079c8593a5153f28f5f045b..b1e540eb83265a49d32c3c78fe51884e1ef4297f 100644 (file)
--- a/drivers/media/i2c/ov02c10.c
+++ b/drivers/media/i2c/ov02c10.c
@@ -385,6 +385,8 @@ struct ov02c10 {
        struct v4l2_ctrl *vblank;
        struct v4l2_ctrl *hblank;
        struct v4l2_ctrl *exposure;
+       struct v4l2_ctrl *hflip;
+       struct v4l2_ctrl *vflip;
 
        struct clk *img_clk;
        struct gpio_desc *reset;
@@ -462,6 +464,16 @@ static int ov02c10_set_ctrl(struct v4l2_ctrl *ctrl)
                ret = ov02c10_test_pattern(ov02c10, ctrl->val);
                break;
 
+       case V4L2_CID_HFLIP:
+               cci_update_bits(ov02c10->regmap, OV02C10_ROTATE_CONTROL,
+                               BIT(3), ov02c10->hflip->val << 3, &ret);
+               break;
+
+       case V4L2_CID_VFLIP:
+               cci_update_bits(ov02c10->regmap, OV02C10_ROTATE_CONTROL,
+                               BIT(4), ov02c10->vflip->val << 4, &ret);
+               break;
+
        default:
                ret = -EINVAL;
                break;
@@ -485,7 +497,7 @@ static int ov02c10_init_controls(struct ov02c10 *ov02c10)
        s64 exposure_max, h_blank, pixel_rate;
        int ret;
 
-       v4l2_ctrl_handler_init(ctrl_hdlr, 10);
+       v4l2_ctrl_handler_init(ctrl_hdlr, 12);
 
        ov02c10->link_freq = v4l2_ctrl_new_int_menu(ctrl_hdlr,
                                                    &ov02c10_ctrl_ops,
@@ -536,6 +548,17 @@ static int ov02c10_init_controls(struct ov02c10 *ov02c10)
                                              exposure_max,
                                              OV02C10_EXPOSURE_STEP,
                                              exposure_max);
+
+       ov02c10->hflip = v4l2_ctrl_new_std(ctrl_hdlr, &ov02c10_ctrl_ops,
+                                          V4L2_CID_HFLIP, 0, 1, 1, 0);
+       if (ov02c10->hflip)
+               ov02c10->hflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
+
+       ov02c10->vflip = v4l2_ctrl_new_std(ctrl_hdlr, &ov02c10_ctrl_ops,
+                                          V4L2_CID_VFLIP, 0, 1, 1, 0);
+       if (ov02c10->vflip)
+               ov02c10->vflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
+
        v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &ov02c10_ctrl_ops,
                                     V4L2_CID_TEST_PATTERN,
                                     ARRAY_SIZE(ov02c10_test_pattern_menu) - 1,