From: Dave Stevenson <dave.stevenson@xxxxxxxxxxxxxxx>
The sensor supports the clock lane either remaining in HS mode
during frame blanking, or dropping to LP11.
Add configuration of the mode via V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK.
Signed-off-by: Dave Stevenson <dave.stevenson@xxxxxxxxxxxxxxx>
Reviewed-by: Jacopo Mondi <jacopo.mondi@xxxxxxxxxxxxxxxx>
Signed-off-by: Luis Garcia <git@xxxxxxxxxxxx>
---
drivers/media/i2c/imx258.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/media/i2c/imx258.c b/drivers/media/i2c/imx258.c
index 805308b4a4c6..692a5aeb7941 100644
--- a/drivers/media/i2c/imx258.c
+++ b/drivers/media/i2c/imx258.c
@@ -72,6 +72,8 @@
/* Test Pattern Control */
#define IMX258_REG_TEST_PATTERN 0x0600
+#define IMX258_CLK_BLANK_STOP 0x4040
+
/* Orientation */
#define REG_MIRROR_FLIP_CONTROL 0x0101
#define REG_CONFIG_MIRROR_FLIP 0x03
@@ -632,6 +634,7 @@ struct imx258 {
const struct imx258_link_freq_config *link_freq_configs;
const s64 *link_freq_menu_items;
unsigned int nlanes;
+ unsigned int csi2_flags;
/*
* Mutex for serialized access:
@@ -1066,6 +1069,15 @@ static int imx258_start_streaming(struct imx258 *imx258)
return ret;
}
+ ret = imx258_write_reg(imx258, IMX258_CLK_BLANK_STOP,
+ IMX258_REG_VALUE_08BIT,
+ imx258->csi2_flags & V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK ?
+ 1 : 0);
+ if (ret) {
+ dev_err(&client->dev, "%s failed to set clock lane mode\n", __func__);
+ return ret;
+ }
+
/* Apply default values of current mode */
reg_list = &imx258->cur_mode->reg_list;
ret = imx258_write_regs(imx258, reg_list->regs, reg_list->num_of_regs);
@@ -1438,6 +1450,8 @@ static int imx258_probe(struct i2c_client *client)
goto error_endpoint_free;
}
+ imx258->csi2_flags = ep.bus.mipi_csi2.flags;
+
/* Initialize subdev */
v4l2_i2c_subdev_init(&imx258->sd, client, &imx258_subdev_ops);
--
2.42.0
