drivers: media: imx519: Add V4L2_CID_LINK_FREQ control

Add V4L2_CID_LINK_FREQ as a read-only control with a value of 408 Mhz.
This will be used by the CFE driver to corretly setup the DPHY timing
parameters in the CSI-2 block.

Signed-off-by: Lee Jackson <lee.jackson@arducam.com>

diff --git a/drivers/media/i2c/imx519.c b/drivers/media/i2c/imx519.c
index d6752a0..7cb63e0 100644 (file)
--- a/drivers/media/i2c/imx519.c
+++ b/drivers/media/i2c/imx519.c
@@ -145,6 +145,10 @@ struct imx519_mode {
        struct imx519_reg_list reg_list;
 };
 
+static const s64 imx519_link_freq_menu[] = {
+       IMX519_DEFAULT_LINK_FREQ,
+};
+
 static const struct imx519_reg mode_common_regs[] = {
        {0x0100, 0x00},
        {0x0136, 0x18},
@@ -1819,6 +1823,7 @@ static int imx519_init_controls(struct imx519 *imx519)
        struct v4l2_ctrl_handler *ctrl_hdlr;
        struct i2c_client *client = v4l2_get_subdevdata(&imx519->sd);
        struct v4l2_fwnode_device_properties props;
+       struct v4l2_ctrl *link_freq;
        unsigned int i;
        int ret;
 
@@ -1837,6 +1842,15 @@ static int imx519_init_controls(struct imx519 *imx519)
                                               IMX519_PIXEL_RATE, 1,
                                               IMX519_PIXEL_RATE);
 
+       /* LINK_FREQ is also read only */
+       link_freq =
+               v4l2_ctrl_new_int_menu(ctrl_hdlr, &imx519_ctrl_ops,
+                                      V4L2_CID_LINK_FREQ,
+                                      ARRAY_SIZE(imx519_link_freq_menu) - 1, 0,
+                                      imx519_link_freq_menu);
+       if (link_freq)
+               link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+
        /*
         * Create the controls here, but mode specific limits are setup
         * in the imx519_set_framing_limits() call below.