media: ipu3-cio2: Use v4l2_get_link_freq helper

Use v4l2_get_link_freq helper and add support for sensor drivers
implementing only V4L2_CID_PIXEL_RATE.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

diff --git a/drivers/media/pci/intel/ipu3/ipu3-cio2.c b/drivers/media/pci/intel/ipu3/ipu3-cio2.c
index c557d18..d060cfe 100644 (file)
--- a/drivers/media/pci/intel/ipu3/ipu3-cio2.c
+++ b/drivers/media/pci/intel/ipu3/ipu3-cio2.c
@@ -33,6 +33,7 @@ struct ipu3_cio2_fmt {
        u32 mbus_code;
        u32 fourcc;
        u8 mipicode;
+       u8 bpp;
 };
 
 /*
@@ -46,18 +47,22 @@ static const struct ipu3_cio2_fmt formats[] = {
                .mbus_code      = MEDIA_BUS_FMT_SGRBG10_1X10,
                .fourcc         = V4L2_PIX_FMT_IPU3_SGRBG10,
                .mipicode       = 0x2b,
+               .bpp            = 10,
        }, {
                .mbus_code      = MEDIA_BUS_FMT_SGBRG10_1X10,
                .fourcc         = V4L2_PIX_FMT_IPU3_SGBRG10,
                .mipicode       = 0x2b,
+               .bpp            = 10,
        }, {
                .mbus_code      = MEDIA_BUS_FMT_SBGGR10_1X10,
                .fourcc         = V4L2_PIX_FMT_IPU3_SBGGR10,
                .mipicode       = 0x2b,
+               .bpp            = 10,
        }, {
                .mbus_code      = MEDIA_BUS_FMT_SRGGB10_1X10,
                .fourcc         = V4L2_PIX_FMT_IPU3_SRGGB10,
                .mipicode       = 0x2b,
+               .bpp            = 10,
        },
 };
 
@@ -288,35 +293,20 @@ static s32 cio2_rx_timing(s32 a, s32 b, s64 freq, int def)
 
 /* Calculate the the delay value for termination enable of clock lane HS Rx */
 static int cio2_csi2_calc_timing(struct cio2_device *cio2, struct cio2_queue *q,
-                                struct cio2_csi2_timing *timing)
+                                struct cio2_csi2_timing *timing,
+                                unsigned int bpp, unsigned int lanes)
 {
        struct device *dev = &cio2->pci_dev->dev;
-       struct v4l2_querymenu qm = { .id = V4L2_CID_LINK_FREQ };
-       struct v4l2_ctrl *link_freq;
        s64 freq;
-       int r;
 
        if (!q->sensor)
                return -ENODEV;
 
-       link_freq = v4l2_ctrl_find(q->sensor->ctrl_handler, V4L2_CID_LINK_FREQ);
-       if (!link_freq) {
-               dev_err(dev, "failed to find LINK_FREQ\n");
-               return -EPIPE;
-       }
-
-       qm.index = v4l2_ctrl_g_ctrl(link_freq);
-       r = v4l2_querymenu(q->sensor->ctrl_handler, &qm);
-       if (r) {
-               dev_err(dev, "failed to get menu item\n");
-               return r;
-       }
-
-       if (!qm.value) {
-               dev_err(dev, "error invalid link_freq\n");
-               return -EINVAL;
+       freq = v4l2_get_link_rate(q->sensor->ctrl_handler, bpp, lanes);
+       if (freq < 0) {
+               dev_err(dev, "error %lld, invalid link_freq\n", freq);
+               return freq;
        }
-       freq = qm.value;
 
        timing->clk_termen = cio2_rx_timing(CIO2_CSIRX_DLY_CNT_TERMEN_CLANE_A,
                                            CIO2_CSIRX_DLY_CNT_TERMEN_CLANE_B,
@@ -364,7 +354,7 @@ static int cio2_hw_init(struct cio2_device *cio2, struct cio2_queue *q)
 
        lanes = q->csi2.lanes;
 
-       r = cio2_csi2_calc_timing(cio2, q, &timing);
+       r = cio2_csi2_calc_timing(cio2, q, &timing, fmt->bpp, lanes);
        if (r)
                return r;