[PATCH v8 0/3] media: i2c: isl7998x: Add driver for Intersil ISL7998x

[PATCH v8 0/3] media: i2c: isl7998x: Add driver for Intersil ISL7998x

[Michael Tretter]

This is v8 of the series to for adding the isl7998x driver [0]

The isl7998x is an analog video to MIPI CSI-2 or BT.656 converter. The dt
binding describes only the isl79987 chip, which supports MIPI CSI-2. The
driver could be extended to handle isl79988 (for BT.656), too, but this isn't
implemented.

v8 fixes a ">> drivers/media/i2c/isl7998x.c:520:8: warning: type qualifiers
ignored on function return type [-Wignored-qualifiers]" warning that was
reported by the kernel test robot and rebases the series on v5.16-rc1.

Michael

[0] https://lore.kernel.org/linux-media/20190520201812.7937-1-marex@denx.de/

Changelog:

v8:

- rebase on v5.16-rc1
- fix warning about ignored type qualifier

v7:

- add reservation and documentation for custom V4L2 controls
- implement g_input_status, g_tvnorms, querystd, s_std, g_std
- use v4l2_norm_to_name instead of custom implementation
- fix off-by-one with 4 inputs
- fix polling condition for standard detection

v6:

- incorporate review feedback by Philipp Zabel into isl7998x.c

v5:

- ignore -ENOIOCTLCMD of pre_streamon for backwards compatibility

v4:

- add patch for imx6-mipi-csi2 to request LP-11 mode
- update isl7998x driver with review feedback on v3

v3:

- rename pd-gpios property to powerdown-gpios
- reference graph.yaml for port/ports property
- remove reference to video-interfaces.txt

v2:

- convert dt binding to yaml
- change binding to ISL79987 only
- general driver cleanup
- convert driver to pm_runtime
- use ports in device tree for specifying inputs
- add reset gpio

Marek Vasut (2):
  media: dt-bindings: Add Intersil ISL79987 DT bindings
  media: i2c: isl7998x: Add driver for Intersil ISL7998x

Michael Tretter (1):
  media: imx6-mipi-csi2: use pre_streamon callback to set sensor into
    LP11

 .../bindings/media/i2c/isil,isl79987.yaml     |  100 ++
 MAINTAINERS                                   |    8 +
 drivers/media/i2c/Kconfig                     |   10 +
 drivers/media/i2c/Makefile                    |    1 +
 drivers/media/i2c/isl7998x.c                  | 1543 +++++++++++++++++
 drivers/staging/media/imx/imx6-mipi-csi2.c    |    9 +-
 include/uapi/linux/v4l2-controls.h            |    6 +
 7 files changed, 1676 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/devicetree/bindings/media/i2c/isil,isl79987.yaml
 create mode 100644 drivers/media/i2c/isl7998x.c

-- 
2.30.2

[PATCH v8 1/3] media: imx6-mipi-csi2: use pre_streamon callback to set sensor into LP11

[Michael Tretter]

Step 5 expects that the sensor is in LP11 mode. Use the new
pre_streamon callback to signal the sensor that it should switch into
LP11.

Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
---
Changelog:

v8: none

v7: none

v6: none

v5:

- ignore -ENOIOCTLCMD of pre_streamon for backwards compatibility

v4:

- new patch
---
 drivers/staging/media/imx/imx6-mipi-csi2.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/media/imx/imx6-mipi-csi2.c b/drivers/staging/media/imx/imx6-mipi-csi2.c
index a0941fc2907b..558b256ac935 100644
--- a/drivers/staging/media/imx/imx6-mipi-csi2.c
+++ b/drivers/staging/media/imx/imx6-mipi-csi2.c
@@ -382,13 +382,17 @@ static int csi2_start(struct csi2_dev *csi2)
 	csi2_enable(csi2, true);
 
 	/* Step 5 */
+	ret = v4l2_subdev_call(csi2->src_sd, video, pre_streamon,
+			       V4L2_SUBDEV_PRE_STREAMON_FL_MANUAL_LP);
+	if (ret && ret != -ENOIOCTLCMD)
+		goto err_assert_reset;
 	csi2_dphy_wait_stopstate(csi2, lanes);
 
 	/* Step 6 */
 	ret = v4l2_subdev_call(csi2->src_sd, video, s_stream, 1);
 	ret = (ret && ret != -ENOIOCTLCMD) ? ret : 0;
 	if (ret)
-		goto err_assert_reset;
+		goto err_stop_lp11;
 
 	/* Step 7 */
 	ret = csi2_dphy_wait_clock_lane(csi2);
@@ -399,6 +403,8 @@ static int csi2_start(struct csi2_dev *csi2)
 
 err_stop_upstream:
 	v4l2_subdev_call(csi2->src_sd, video, s_stream, 0);
+err_stop_lp11:
+	v4l2_subdev_call(csi2->src_sd, video, post_streamoff);
 err_assert_reset:
 	csi2_enable(csi2, false);
 err_disable_clk:
@@ -410,6 +416,7 @@ static void csi2_stop(struct csi2_dev *csi2)
 {
 	/* stop upstream */
 	v4l2_subdev_call(csi2->src_sd, video, s_stream, 0);
+	v4l2_subdev_call(csi2->src_sd, video, post_streamoff);
 
 	csi2_enable(csi2, false);
 	clk_disable_unprepare(csi2->pix_clk);
-- 
2.30.2

[PATCH v8 2/3] media: dt-bindings: Add Intersil ISL79987 DT bindings

[Michael Tretter]

From: Marek Vasut <marex@denx.de>

Add bindings for the Intersil ISL79987 analog to MIPI CSI-2 decoder.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
To: linux-media@vger.kernel.org
Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
Reviewed-by: Rob Herring <robh@kernel.org>
---
Changelog:

v8: none

v7: none

v6: none

v5: none

v4: none

v3:

- rename pd-gpios property to powerdown-gpios
- reference graph.yaml for ports/port properties
- remove reference to video-interfaces.txt
- remove unnecessary description of ports property

v2:

- convert binding to yaml
- change description to match only isl79987
- replace num-inputs property with multiple ports
- add reset gpio
---
 .../bindings/media/i2c/isil,isl79987.yaml     | 100 ++++++++++++++++++
 1 file changed, 100 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/i2c/isil,isl79987.yaml

diff --git a/Documentation/devicetree/bindings/media/i2c/isil,isl79987.yaml b/Documentation/devicetree/bindings/media/i2c/isil,isl79987.yaml
new file mode 100644
index 000000000000..aee4a5966df3
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/isil,isl79987.yaml
@@ -0,0 +1,100 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/i2c/isil,isl79987.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Intersil ISL79987 Analog to MIPI CSI-2 decoder
+
+maintainers:
+  - Michael Tretter <m.tretter@pengutronix.de>
+  - Marek Vasut <marex@denx.de>
+
+description:
+  The Intersil ISL79987 is an analog to MIPI CSI-2 decoder which is capable of
+  receiving up to four analog stream and multiplexing them into up to four MIPI
+  CSI-2 virtual channels, using one MIPI clock lane and 1/2 data lanes.
+
+properties:
+  compatible:
+    enum:
+      - isil,isl79987
+
+  reg:
+    maxItems: 1
+
+  reset-gpios:
+    maxItems: 1
+    description:
+      A GPIO spec for the RSTB pin (active high)
+
+  powerdown-gpios:
+    maxItems: 1
+    description:
+      A GPIO spec for the Power Down pin (active high)
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Output port
+
+    patternProperties:
+      "^port@[1-4]$":
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Input ports
+
+    required:
+      - port@0
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - ports
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      isl7998x_mipi@44 {
+        compatible = "isil,isl79987";
+        reg = <0x44>;
+        powerdown-gpios = <&gpio3 27 GPIO_ACTIVE_HIGH>;
+        reset-gpios = <&gpio3 28 GPIO_ACTIVE_HIGH>;
+
+        ports {
+          #address-cells = <1>;
+          #size-cells = <0>;
+
+          port@0 {
+            reg = <0>;
+            isl79987_out: endpoint {
+              remote-endpoint = <&mipi_csi2_in>;
+              clock-lanes = <0>;
+              data-lanes = <1 2>;
+            };
+          };
+
+          port@1 {
+            reg = <1>;
+            endpoint {
+              remote-endpoint = <&camera_0>;
+            };
+          };
+
+          port@2 {
+            reg = <2>;
+            endpoint {
+              remote-endpoint = <&camera_1>;
+            };
+          };
+        };
+      };
+    };
-- 
2.30.2

Re: [PATCH v8 2/3] media: dt-bindings: Add Intersil ISL79987 DT bindings

[Sakari Ailus]

Hi Michael,

On Tue, Nov 23, 2021 at 11:15:16AM +0100, Michael Tretter wrote:
> From: Marek Vasut <marex@denx.de>
> 
> Add bindings for the Intersil ISL79987 analog to MIPI CSI-2 decoder.
> 
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Sakari Ailus <sakari.ailus@linux.intel.com>
> Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
> Cc: Rob Herring <robh+dt@kernel.org>
> Cc: devicetree@vger.kernel.org
> To: linux-media@vger.kernel.org
> Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
> Reviewed-by: Rob Herring <robh@kernel.org>
> ---
> Changelog:
> 
> v8: none
> 
> v7: none
> 
> v6: none
> 
> v5: none
> 
> v4: none
> 
> v3:
> 
> - rename pd-gpios property to powerdown-gpios
> - reference graph.yaml for ports/port properties
> - remove reference to video-interfaces.txt
> - remove unnecessary description of ports property
> 
> v2:
> 
> - convert binding to yaml
> - change description to match only isl79987
> - replace num-inputs property with multiple ports
> - add reset gpio
> ---
>  .../bindings/media/i2c/isil,isl79987.yaml     | 100 ++++++++++++++++++
>  1 file changed, 100 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/i2c/isil,isl79987.yaml
> 
> diff --git a/Documentation/devicetree/bindings/media/i2c/isil,isl79987.yaml b/Documentation/devicetree/bindings/media/i2c/isil,isl79987.yaml
> new file mode 100644
> index 000000000000..aee4a5966df3
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/i2c/isil,isl79987.yaml
> @@ -0,0 +1,100 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/media/i2c/isil,isl79987.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Intersil ISL79987 Analog to MIPI CSI-2 decoder
> +
> +maintainers:
> +  - Michael Tretter <m.tretter@pengutronix.de>
> +  - Marek Vasut <marex@denx.de>
> +
> +description:
> +  The Intersil ISL79987 is an analog to MIPI CSI-2 decoder which is capable of
> +  receiving up to four analog stream and multiplexing them into up to four MIPI
> +  CSI-2 virtual channels, using one MIPI clock lane and 1/2 data lanes.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - isil,isl79987
> +
> +  reg:
> +    maxItems: 1
> +
> +  reset-gpios:
> +    maxItems: 1
> +    description:
> +      A GPIO spec for the RSTB pin (active high)
> +
> +  powerdown-gpios:
> +    maxItems: 1
> +    description:
> +      A GPIO spec for the Power Down pin (active high)
> +
> +  ports:
> +    $ref: /schemas/graph.yaml#/properties/ports
> +    properties:
> +      port@0:
> +        $ref: /schemas/graph.yaml#/properties/port
> +        description: Output port

I think you need need the data-lanes property for endpoints on this port.

> +
> +    patternProperties:
> +      "^port@[1-4]$":
> +        $ref: /schemas/graph.yaml#/properties/port
> +        description: Input ports
> +
> +    required:
> +      - port@0
> +
> +additionalProperties: false
> +
> +required:
> +  - compatible
> +  - reg
> +  - ports
> +
> +examples:
> +  - |
> +    #include <dt-bindings/gpio/gpio.h>
> +
> +    i2c {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +
> +      isl7998x_mipi@44 {
> +        compatible = "isil,isl79987";
> +        reg = <0x44>;
> +        powerdown-gpios = <&gpio3 27 GPIO_ACTIVE_HIGH>;
> +        reset-gpios = <&gpio3 28 GPIO_ACTIVE_HIGH>;
> +
> +        ports {
> +          #address-cells = <1>;
> +          #size-cells = <0>;
> +
> +          port@0 {
> +            reg = <0>;
> +            isl79987_out: endpoint {
> +              remote-endpoint = <&mipi_csi2_in>;
> +              clock-lanes = <0>;
> +              data-lanes = <1 2>;
> +            };
> +          };
> +
> +          port@1 {
> +            reg = <1>;
> +            endpoint {
> +              remote-endpoint = <&camera_0>;
> +            };
> +          };
> +
> +          port@2 {
> +            reg = <2>;
> +            endpoint {
> +              remote-endpoint = <&camera_1>;
> +            };
> +          };
> +        };
> +      };
> +    };

-- 
Kind regards,

Sakari Ailus

Re: [PATCH v8 2/3] media: dt-bindings: Add Intersil ISL79987 DT bindings

[Michael Tretter]

On Tue, 23 Nov 2021 13:07:00 +0200, Sakari Ailus wrote:
> On Tue, Nov 23, 2021 at 11:15:16AM +0100, Michael Tretter wrote:
> > From: Marek Vasut <marex@denx.de>
> > 
> > Add bindings for the Intersil ISL79987 analog to MIPI CSI-2 decoder.
> > 
> > Signed-off-by: Marek Vasut <marex@denx.de>
> > Cc: Sakari Ailus <sakari.ailus@linux.intel.com>
> > Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
> > Cc: Rob Herring <robh+dt@kernel.org>
> > Cc: devicetree@vger.kernel.org
> > To: linux-media@vger.kernel.org
> > Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
> > Reviewed-by: Rob Herring <robh@kernel.org>
> > ---
> > Changelog:
> > 
> > v8: none
> > 
> > v7: none
> > 
> > v6: none
> > 
> > v5: none
> > 
> > v4: none
> > 
> > v3:
> > 
> > - rename pd-gpios property to powerdown-gpios
> > - reference graph.yaml for ports/port properties
> > - remove reference to video-interfaces.txt
> > - remove unnecessary description of ports property
> > 
> > v2:
> > 
> > - convert binding to yaml
> > - change description to match only isl79987
> > - replace num-inputs property with multiple ports
> > - add reset gpio
> > ---
> >  .../bindings/media/i2c/isil,isl79987.yaml     | 100 ++++++++++++++++++
> >  1 file changed, 100 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/media/i2c/isil,isl79987.yaml
> > 
> > diff --git a/Documentation/devicetree/bindings/media/i2c/isil,isl79987.yaml b/Documentation/devicetree/bindings/media/i2c/isil,isl79987.yaml
> > new file mode 100644
> > index 000000000000..aee4a5966df3
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/media/i2c/isil,isl79987.yaml
> > @@ -0,0 +1,100 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/media/i2c/isil,isl79987.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Intersil ISL79987 Analog to MIPI CSI-2 decoder
> > +
> > +maintainers:
> > +  - Michael Tretter <m.tretter@pengutronix.de>
> > +  - Marek Vasut <marex@denx.de>
> > +
> > +description:
> > +  The Intersil ISL79987 is an analog to MIPI CSI-2 decoder which is capable of
> > +  receiving up to four analog stream and multiplexing them into up to four MIPI
> > +  CSI-2 virtual channels, using one MIPI clock lane and 1/2 data lanes.
> > +
> > +properties:
> > +  compatible:
> > +    enum:
> > +      - isil,isl79987
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  reset-gpios:
> > +    maxItems: 1
> > +    description:
> > +      A GPIO spec for the RSTB pin (active high)
> > +
> > +  powerdown-gpios:
> > +    maxItems: 1
> > +    description:
> > +      A GPIO spec for the Power Down pin (active high)
> > +
> > +  ports:
> > +    $ref: /schemas/graph.yaml#/properties/ports
> > +    properties:
> > +      port@0:
> > +        $ref: /schemas/graph.yaml#/properties/port
> > +        description: Output port
> 
> I think you need need the data-lanes property for endpoints on this port.

Thanks. The bot also found that the clock-lanes property is missing, too.

The following specification seems to satisfy the checker, but I'm not
completely sure, if it is actually correct:

	port@0:
	  $ref: /schemas/graph.yaml#/$defs/port-base
	  unevaluatedProperties: false
	  description: Output port

	  properties:
	    endpoint:
	      $ref: /schemas/media/video-interfaces.yaml#
	      unevaluatedProperties: false

	      properties:
		clock-lanes:
		  maxItems: 1

		data-lanes:
		  minItems: 1
		  maxItems: 2

	      required:
		- clock-lanes
		- data-lanes

Is this how I can correctly add the clock-lanes and data-lanes properties to
the endpoint?

Michael

> 
> > +
> > +    patternProperties:
> > +      "^port@[1-4]$":
> > +        $ref: /schemas/graph.yaml#/properties/port
> > +        description: Input ports
> > +
> > +    required:
> > +      - port@0
> > +
> > +additionalProperties: false
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - ports
> > +
> > +examples:
> > +  - |
> > +    #include <dt-bindings/gpio/gpio.h>
> > +
> > +    i2c {
> > +      #address-cells = <1>;
> > +      #size-cells = <0>;
> > +
> > +      isl7998x_mipi@44 {
> > +        compatible = "isil,isl79987";
> > +        reg = <0x44>;
> > +        powerdown-gpios = <&gpio3 27 GPIO_ACTIVE_HIGH>;
> > +        reset-gpios = <&gpio3 28 GPIO_ACTIVE_HIGH>;
> > +
> > +        ports {
> > +          #address-cells = <1>;
> > +          #size-cells = <0>;
> > +
> > +          port@0 {
> > +            reg = <0>;
> > +            isl79987_out: endpoint {
> > +              remote-endpoint = <&mipi_csi2_in>;
> > +              clock-lanes = <0>;
> > +              data-lanes = <1 2>;
> > +            };
> > +          };
> > +
> > +          port@1 {
> > +            reg = <1>;
> > +            endpoint {
> > +              remote-endpoint = <&camera_0>;
> > +            };
> > +          };
> > +
> > +          port@2 {
> > +            reg = <2>;
> > +            endpoint {
> > +              remote-endpoint = <&camera_1>;
> > +            };
> > +          };
> > +        };
> > +      };
> > +    };
> 
> -- 
> Kind regards,
> 
> Sakari Ailus
> 

Re: [PATCH v8 2/3] media: dt-bindings: Add Intersil ISL79987 DT bindings

[Sakari Ailus]

Hi Michael,

On Wed, Nov 24, 2021 at 05:49:07PM +0100, Michael Tretter wrote:
> On Tue, 23 Nov 2021 13:07:00 +0200, Sakari Ailus wrote:
> > On Tue, Nov 23, 2021 at 11:15:16AM +0100, Michael Tretter wrote:
> > > From: Marek Vasut <marex@denx.de>
> > > 
> > > Add bindings for the Intersil ISL79987 analog to MIPI CSI-2 decoder.
> > > 
> > > Signed-off-by: Marek Vasut <marex@denx.de>
> > > Cc: Sakari Ailus <sakari.ailus@linux.intel.com>
> > > Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
> > > Cc: Rob Herring <robh+dt@kernel.org>
> > > Cc: devicetree@vger.kernel.org
> > > To: linux-media@vger.kernel.org
> > > Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
> > > Reviewed-by: Rob Herring <robh@kernel.org>
> > > ---
> > > Changelog:
> > > 
> > > v8: none
> > > 
> > > v7: none
> > > 
> > > v6: none
> > > 
> > > v5: none
> > > 
> > > v4: none
> > > 
> > > v3:
> > > 
> > > - rename pd-gpios property to powerdown-gpios
> > > - reference graph.yaml for ports/port properties
> > > - remove reference to video-interfaces.txt
> > > - remove unnecessary description of ports property
> > > 
> > > v2:
> > > 
> > > - convert binding to yaml
> > > - change description to match only isl79987
> > > - replace num-inputs property with multiple ports
> > > - add reset gpio
> > > ---
> > >  .../bindings/media/i2c/isil,isl79987.yaml     | 100 ++++++++++++++++++
> > >  1 file changed, 100 insertions(+)
> > >  create mode 100644 Documentation/devicetree/bindings/media/i2c/isil,isl79987.yaml
> > > 
> > > diff --git a/Documentation/devicetree/bindings/media/i2c/isil,isl79987.yaml b/Documentation/devicetree/bindings/media/i2c/isil,isl79987.yaml
> > > new file mode 100644
> > > index 000000000000..aee4a5966df3
> > > --- /dev/null
> > > +++ b/Documentation/devicetree/bindings/media/i2c/isil,isl79987.yaml
> > > @@ -0,0 +1,100 @@
> > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > > +%YAML 1.2
> > > +---
> > > +$id: http://devicetree.org/schemas/media/i2c/isil,isl79987.yaml#
> > > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > > +
> > > +title: Intersil ISL79987 Analog to MIPI CSI-2 decoder
> > > +
> > > +maintainers:
> > > +  - Michael Tretter <m.tretter@pengutronix.de>
> > > +  - Marek Vasut <marex@denx.de>
> > > +
> > > +description:
> > > +  The Intersil ISL79987 is an analog to MIPI CSI-2 decoder which is capable of
> > > +  receiving up to four analog stream and multiplexing them into up to four MIPI
> > > +  CSI-2 virtual channels, using one MIPI clock lane and 1/2 data lanes.
> > > +
> > > +properties:
> > > +  compatible:
> > > +    enum:
> > > +      - isil,isl79987
> > > +
> > > +  reg:
> > > +    maxItems: 1
> > > +
> > > +  reset-gpios:
> > > +    maxItems: 1
> > > +    description:
> > > +      A GPIO spec for the RSTB pin (active high)
> > > +
> > > +  powerdown-gpios:
> > > +    maxItems: 1
> > > +    description:
> > > +      A GPIO spec for the Power Down pin (active high)
> > > +
> > > +  ports:
> > > +    $ref: /schemas/graph.yaml#/properties/ports
> > > +    properties:
> > > +      port@0:
> > > +        $ref: /schemas/graph.yaml#/properties/port
> > > +        description: Output port
> > 
> > I think you need need the data-lanes property for endpoints on this port.
> 
> Thanks. The bot also found that the clock-lanes property is missing, too.
> 
> The following specification seems to satisfy the checker, but I'm not
> completely sure, if it is actually correct:
> 
> 	port@0:
> 	  $ref: /schemas/graph.yaml#/$defs/port-base
> 	  unevaluatedProperties: false
> 	  description: Output port
> 
> 	  properties:
> 	    endpoint:
> 	      $ref: /schemas/media/video-interfaces.yaml#
> 	      unevaluatedProperties: false
> 
> 	      properties:
> 		clock-lanes:
> 		  maxItems: 1
> 
> 		data-lanes:
> 		  minItems: 1
> 		  maxItems: 2
> 
> 	      required:
> 		- clock-lanes
> 		- data-lanes
> 
> Is this how I can correctly add the clock-lanes and data-lanes properties to
> the endpoint?

clock-lanes is extra, unless the hardware supports lane remapping.

-- 
Sakari Ailus

Re: [PATCH v8 2/3] media: dt-bindings: Add Intersil ISL79987 DT bindings

[Rob Herring]

On Tue, 23 Nov 2021 11:15:16 +0100, Michael Tretter wrote:
> From: Marek Vasut <marex@denx.de>
> 
> Add bindings for the Intersil ISL79987 analog to MIPI CSI-2 decoder.
> 
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Sakari Ailus <sakari.ailus@linux.intel.com>
> Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
> Cc: Rob Herring <robh+dt@kernel.org>
> Cc: devicetree@vger.kernel.org
> To: linux-media@vger.kernel.org
> Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
> Reviewed-by: Rob Herring <robh@kernel.org>
> ---
> Changelog:
> 
> v8: none
> 
> v7: none
> 
> v6: none
> 
> v5: none
> 
> v4: none
> 
> v3:
> 
> - rename pd-gpios property to powerdown-gpios
> - reference graph.yaml for ports/port properties
> - remove reference to video-interfaces.txt
> - remove unnecessary description of ports property
> 
> v2:
> 
> - convert binding to yaml
> - change description to match only isl79987
> - replace num-inputs property with multiple ports
> - add reset gpio
> ---
>  .../bindings/media/i2c/isil,isl79987.yaml     | 100 ++++++++++++++++++
>  1 file changed, 100 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/i2c/isil,isl79987.yaml
> 

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/media/i2c/isil,isl79987.example.dt.yaml: isl7998x_mipi@44: ports:port@0:endpoint: Unevaluated properties are not allowed ('clock-lanes', 'data-lanes' were unexpected)
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/media/i2c/isil,isl79987.yaml

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/patch/1558453

This check can fail if there are any dependencies. The base for a patch
series is generally the most recent rc1.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit.

[PATCH v8 3/3] media: i2c: isl7998x: Add driver for Intersil ISL7998x

[Michael Tretter]

From: Marek Vasut <marex@denx.de>

Add driver for the Intersil ISL7998x Analog to MIPI CSI-2/BT656 decoder.
This chip supports 1/2/4 analog video inputs and converts them into
1/2/4 VCs in MIPI CSI2 stream.

This driver currently supports ISL79987 and both 720x480 and 720x576
resolutions, however as per specification, all inputs must use the
same resolution and standard. The only supported pixel format is now
YUYV/YUV422. The chip should support RGB565 on the CSI2 as well, but
this is currently unsupported.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>
To: linux-media@vger.kernel.org
Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
---
Changelog:

v8:

- fix warning "type qualifiers ignored on function return type"

v7:

- reserve driver specific controls
- add documentation for driver specific controls
- implement g_input_status
- track device enabled state in driver
- store norm instead of mode in driver
- select test pattern based on video norm
- improve debug message for enabled test pattern
- fix off by one with 4 inputs
- implement querystd and friends
- fix polling condition for standard detection
- use v4l2_norm_to_name instead of custom implementation

v6:

- remove unused log2.h
- add select MEDIA_CONTROLLER
- use poll_read_timeout to wait for power on
- add timeout to polling for video standard
- use fwnode_graph_get_endpoint_by_id
- fix invalid bus type error message

v5: none

v4:

- fix lines over 80 chars where applicable
- fix possible NULL pointer access in link_freq
- initialize bus type with CSI2_DPHY
- iterate over pads instead of hard coded 4
- merge power_{on,off} functions into resume,suspend
- switch to v4l2_subdev_state
- report field order based on video standard
- add error message for timeout
- simplify dev_dbg statement in update_std
- call v4l2_ctrl_handler_setup
- don't set control if pm_runtime is not enabled
- fix YUV422 byte order
- switch to pre_streamon callback for LP11 mode

v3:

- follow dt binding change: pd-gpios -> powerdown-gpios

v2:

- general cleanup
- remove isl7998x_g_mbus_config function
- implement enum_frame_size function
- replace msleep with usleep_range
- rework set_fmt/get_fmt functions
- calculate number of inputs using number of input ports
- switch to runtime_pm
- add reset gpio
- add adv_debug support
- add MAINTAINERS entry

fixup! media: i2c: isl7998x: Add driver for Intersil ISL7998x
---
 MAINTAINERS                        |    8 +
 drivers/media/i2c/Kconfig          |   10 +
 drivers/media/i2c/Makefile         |    1 +
 drivers/media/i2c/isl7998x.c       | 1543 ++++++++++++++++++++++++++++
 include/uapi/linux/v4l2-controls.h |    6 +
 5 files changed, 1568 insertions(+)
 create mode 100644 drivers/media/i2c/isl7998x.c

diff --git a/MAINTAINERS b/MAINTAINERS
index 8eea24d54624..2b609a57b7ac 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -9902,6 +9902,14 @@ L:	linux-iio@vger.kernel.org
 F:	Documentation/devicetree/bindings/counter/interrupt-counter.yaml
 F:	drivers/counter/interrupt-cnt.c
 
+INTERSIL ISL7998X VIDEO DECODER DRIVER
+M:	Michael Tretter <m.tretter@pengutronix.de>
+R:	Pengutronix Kernel Team <kernel@pengutronix.de>
+L:	linux-media@vger.kernel.org
+S:	Maintained
+F:	Documentation/devicetree/bindings/media/i2c/isil,isl79987.yaml
+F:	drivers/media/i2c/isl7998x.c
+
 INVENSENSE ICM-426xx IMU DRIVER
 M:	Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
 L:	linux-iio@vger.kernel.org
diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
index d6a5d4ca439a..b34d25961d3f 100644
--- a/drivers/media/i2c/Kconfig
+++ b/drivers/media/i2c/Kconfig
@@ -325,6 +325,16 @@ config VIDEO_BT866
 	  To compile this driver as a module, choose M here: the
 	  module will be called bt866.
 
+config VIDEO_ISL7998X
+	tristate "Intersil ISL7998x video decoder"
+	depends on VIDEO_V4L2 && I2C
+	depends on OF_GPIO
+	select MEDIA_CONTROLLER
+	select VIDEO_V4L2_SUBDEV_API
+	help
+	  Support for Intersil ISL7998x analog to MIPI-CSI2 or
+	  BT.656 decoder.
+
 config VIDEO_KS0127
 	tristate "KS0127 video decoder"
 	depends on VIDEO_V4L2 && I2C
diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
index 4d4fe08d7a6a..249720c25b5e 100644
--- a/drivers/media/i2c/Makefile
+++ b/drivers/media/i2c/Makefile
@@ -130,6 +130,7 @@ obj-$(CONFIG_VIDEO_IMX334)	+= imx334.o
 obj-$(CONFIG_VIDEO_IMX335)	+= imx335.o
 obj-$(CONFIG_VIDEO_IMX355)	+= imx355.o
 obj-$(CONFIG_VIDEO_IMX412)	+= imx412.o
+obj-$(CONFIG_VIDEO_ISL7998X)	+= isl7998x.o
 obj-$(CONFIG_VIDEO_MAX9286)	+= max9286.o
 obj-$(CONFIG_VIDEO_MAX9271_LIB)	+= max9271.o
 obj-$(CONFIG_VIDEO_RDACM20)	+= rdacm20.o
diff --git a/drivers/media/i2c/isl7998x.c b/drivers/media/i2c/isl7998x.c
new file mode 100644
index 000000000000..2e35b85885e1
--- /dev/null
+++ b/drivers/media/i2c/isl7998x.c
@@ -0,0 +1,1543 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Intersil ISL7998x analog to MIPI CSI-2 or BT.656 decoder driver.
+ *
+ * Copyright (C) 2018-2019 Marek Vasut <marex@denx.de>
+ * Copyright (C) 2021 Michael Tretter <kernel@pengutronix.de>
+ */
+
+#include <linux/bitfield.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/of_graph.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <linux/v4l2-mediabus.h>
+#include <linux/videodev2.h>
+
+#include <media/v4l2-async.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-fwnode.h>
+#include <media/v4l2-ioctl.h>
+
+/*
+ * This control allows to activate and deactivate the test pattern on
+ * selected output channels.
+ * This value is ISL7998x specific.
+ */
+#define V4L2_CID_TEST_PATTERN_CHANNELS	(V4L2_CID_USER_ISL7998X_BASE + 0)
+
+/*
+ * This control allows to specify the color of the test pattern.
+ * This value is ISL7998x specific.
+ */
+#define V4L2_CID_TEST_PATTERN_COLOR	(V4L2_CID_USER_ISL7998X_BASE + 1)
+
+/*
+ * This control allows to specify the bar pattern in the test pattern.
+ * This value is ISL7998x specific.
+ */
+#define V4L2_CID_TEST_PATTERN_BARS	(V4L2_CID_USER_ISL7998X_BASE + 2)
+
+#define ISL7998x_INPUTS			4
+
+#define ISL7998x_REG(page, reg)		(((page) << 8) | (reg))
+
+#define ISL7998x_REG_Pn_SIZE			256
+#define ISL7998x_REG_Pn_BASE(n)			((n) * ISL7998x_REG_Pn_SIZE)
+
+#define ISL7998x_REG_Px_DEC_PAGE(page)		ISL7998x_REG((page), 0xff)
+#define ISL7998x_REG_Px_DEC_PAGE_MASK		0xf
+#define ISL7998x_REG_P0_PRODUCT_ID_CODE		ISL7998x_REG(0, 0x00)
+#define ISL7998x_REG_P0_PRODUCT_REV_CODE	ISL7998x_REG(0, 0x01)
+#define ISL7998x_REG_P0_SW_RESET_CTL		ISL7998x_REG(0, 0x02)
+#define ISL7998x_REG_P0_IO_BUFFER_CTL		ISL7998x_REG(0, 0x03)
+#define ISL7998x_REG_P0_IO_BUFFER_CTL_1_1	ISL7998x_REG(0, 0x04)
+#define ISL7998x_REG_P0_IO_PAD_PULL_EN_CTL	ISL7998x_REG(0, 0x05)
+#define ISL7998x_REG_P0_IO_BUFFER_CTL_1_2	ISL7998x_REG(0, 0x06)
+#define ISL7998x_REG_P0_VIDEO_IN_CHAN_CTL	ISL7998x_REG(0, 0x07)
+#define ISL7998x_REG_P0_CLK_CTL_1		ISL7998x_REG(0, 0x08)
+#define ISL7998x_REG_P0_CLK_CTL_2		ISL7998x_REG(0, 0x09)
+#define ISL7998x_REG_P0_CLK_CTL_3		ISL7998x_REG(0, 0x0a)
+#define ISL7998x_REG_P0_CLK_CTL_4		ISL7998x_REG(0, 0x0b)
+#define ISL7998x_REG_P0_MPP1_SYNC_CTL		ISL7998x_REG(0, 0x0c)
+#define ISL7998x_REG_P0_MPP2_SYNC_CTL		ISL7998x_REG(0, 0x0d)
+#define ISL7998x_REG_P0_IRQ_SYNC_CTL		ISL7998x_REG(0, 0x0e)
+#define ISL7998x_REG_P0_INTERRUPT_STATUS	ISL7998x_REG(0, 0x10)
+#define ISL7998x_REG_P0_CHAN_1_IRQ		ISL7998x_REG(0, 0x11)
+#define ISL7998x_REG_P0_CHAN_2_IRQ		ISL7998x_REG(0, 0x12)
+#define ISL7998x_REG_P0_CHAN_3_IRQ		ISL7998x_REG(0, 0x13)
+#define ISL7998x_REG_P0_CHAN_4_IRQ		ISL7998x_REG(0, 0x14)
+#define ISL7998x_REG_P0_SHORT_DIAG_IRQ		ISL7998x_REG(0, 0x15)
+#define ISL7998x_REG_P0_CHAN_1_IRQ_EN		ISL7998x_REG(0, 0x16)
+#define ISL7998x_REG_P0_CHAN_2_IRQ_EN		ISL7998x_REG(0, 0x17)
+#define ISL7998x_REG_P0_CHAN_3_IRQ_EN		ISL7998x_REG(0, 0x18)
+#define ISL7998x_REG_P0_CHAN_4_IRQ_EN		ISL7998x_REG(0, 0x19)
+#define ISL7998x_REG_P0_SHORT_DIAG_IRQ_EN	ISL7998x_REG(0, 0x1a)
+#define ISL7998x_REG_P0_CHAN_1_STATUS		ISL7998x_REG(0, 0x1b)
+#define ISL7998x_REG_P0_CHAN_2_STATUS		ISL7998x_REG(0, 0x1c)
+#define ISL7998x_REG_P0_CHAN_3_STATUS		ISL7998x_REG(0, 0x1d)
+#define ISL7998x_REG_P0_CHAN_4_STATUS		ISL7998x_REG(0, 0x1e)
+#define ISL7998x_REG_P0_SHORT_DIAG_STATUS	ISL7998x_REG(0, 0x1f)
+#define ISL7998x_REG_P0_CLOCK_DELAY		ISL7998x_REG(0, 0x20)
+
+#define ISL7998x_REG_Px_DEC_INPUT_FMT(pg)	ISL7998x_REG((pg), 0x02)
+#define ISL7998x_REG_Px_DEC_STATUS_1(pg)	ISL7998x_REG((pg), 0x03)
+#define ISL7998x_REG_Px_DEC_STATUS_1_VDLOSS	BIT(7)
+#define ISL7998x_REG_Px_DEC_STATUS_1_HLOCK	BIT(6)
+#define ISL7998x_REG_Px_DEC_STATUS_1_VLOCK	BIT(3)
+#define ISL7998x_REG_Px_DEC_HS_DELAY_CTL(pg)	ISL7998x_REG((pg), 0x04)
+#define ISL7998x_REG_Px_DEC_ANCTL(pg)		ISL7998x_REG((pg), 0x06)
+#define ISL7998x_REG_Px_DEC_CROP_HI(pg)		ISL7998x_REG((pg), 0x07)
+#define ISL7998x_REG_Px_DEC_VDELAY_LO(pg)	ISL7998x_REG((pg), 0x08)
+#define ISL7998x_REG_Px_DEC_VACTIVE_LO(pg)	ISL7998x_REG((pg), 0x09)
+#define ISL7998x_REG_Px_DEC_HDELAY_LO(pg)	ISL7998x_REG((pg), 0x0a)
+#define ISL7998x_REG_Px_DEC_HACTIVE_LO(pg)	ISL7998x_REG((pg), 0x0b)
+#define ISL7998x_REG_Px_DEC_CNTRL1(pg)		ISL7998x_REG((pg), 0x0c)
+#define ISL7998x_REG_Px_DEC_CSC_CTL(pg)		ISL7998x_REG((pg), 0x0d)
+#define ISL7998x_REG_Px_DEC_BRIGHT(pg)		ISL7998x_REG((pg), 0x10)
+#define ISL7998x_REG_Px_DEC_CONTRAST(pg)	ISL7998x_REG((pg), 0x11)
+#define ISL7998x_REG_Px_DEC_SHARPNESS(pg)	ISL7998x_REG((pg), 0x12)
+#define ISL7998x_REG_Px_DEC_SAT_U(pg)		ISL7998x_REG((pg), 0x13)
+#define ISL7998x_REG_Px_DEC_SAT_V(pg)		ISL7998x_REG((pg), 0x14)
+#define ISL7998x_REG_Px_DEC_HUE(pg)		ISL7998x_REG((pg), 0x15)
+#define ISL7998x_REG_Px_DEC_VERT_PEAK(pg)	ISL7998x_REG((pg), 0x17)
+#define ISL7998x_REG_Px_DEC_CORING(pg)		ISL7998x_REG((pg), 0x18)
+#define ISL7998x_REG_Px_DEC_SDT(pg)		ISL7998x_REG((pg), 0x1c)
+#define ISL7998x_REG_Px_DEC_SDT_DET		BIT(7)
+#define ISL7998x_REG_Px_DEC_SDT_NOW		GENMASK(6, 4)
+#define ISL7998x_REG_Px_DEC_SDT_STANDARD	GENMASK(2, 0)
+#define ISL7998x_REG_Px_DEC_SDTR(pg)		ISL7998x_REG((pg), 0x1d)
+#define ISL7998x_REG_Px_DEC_SDTR_ATSTART	BIT(7)
+#define ISL7998x_REG_Px_DEC_CLMPG(pg)		ISL7998x_REG((pg), 0x20)
+#define ISL7998x_REG_Px_DEC_IAGC(pg)		ISL7998x_REG((pg), 0x21)
+#define ISL7998x_REG_Px_DEC_AGCGAIN(pg)		ISL7998x_REG((pg), 0x22)
+#define ISL7998x_REG_Px_DEC_PEAKWT(pg)		ISL7998x_REG((pg), 0x23)
+#define ISL7998x_REG_Px_DEC_CLMPL(pg)		ISL7998x_REG((pg), 0x24)
+#define ISL7998x_REG_Px_DEC_SYNCT(pg)		ISL7998x_REG((pg), 0x25)
+#define ISL7998x_REG_Px_DEC_MISSCNT(pg)		ISL7998x_REG((pg), 0x26)
+#define ISL7998x_REG_Px_DEC_PCLAMP(pg)		ISL7998x_REG((pg), 0x27)
+#define ISL7998x_REG_Px_DEC_VERT_CTL_1(pg)	ISL7998x_REG((pg), 0x28)
+#define ISL7998x_REG_Px_DEC_VERT_CTL_2(pg)	ISL7998x_REG((pg), 0x29)
+#define ISL7998x_REG_Px_DEC_CLR_KILL_LVL(pg)	ISL7998x_REG((pg), 0x2a)
+#define ISL7998x_REG_Px_DEC_COMB_FILTER_CTL(pg)	ISL7998x_REG((pg), 0x2b)
+#define ISL7998x_REG_Px_DEC_LUMA_DELAY(pg)	ISL7998x_REG((pg), 0x2c)
+#define ISL7998x_REG_Px_DEC_MISC1(pg)		ISL7998x_REG((pg), 0x2d)
+#define ISL7998x_REG_Px_DEC_MISC2(pg)		ISL7998x_REG((pg), 0x2e)
+#define ISL7998x_REG_Px_DEC_MISC3(pg)		ISL7998x_REG((pg), 0x2f)
+#define ISL7998x_REG_Px_DEC_MVSN(pg)		ISL7998x_REG((pg), 0x30)
+#define ISL7998x_REG_Px_DEC_CSTATUS2(pg)	ISL7998x_REG((pg), 0x31)
+#define ISL7998x_REG_Px_DEC_HFREF(pg)		ISL7998x_REG((pg), 0x32)
+#define ISL7998x_REG_Px_DEC_CLMD(pg)		ISL7998x_REG((pg), 0x33)
+#define ISL7998x_REG_Px_DEC_ID_DET_CTL(pg)	ISL7998x_REG((pg), 0x34)
+#define ISL7998x_REG_Px_DEC_CLCNTL(pg)		ISL7998x_REG((pg), 0x35)
+#define ISL7998x_REG_Px_DEC_DIFF_CLMP_CTL_1(pg)	ISL7998x_REG((pg), 0x36)
+#define ISL7998x_REG_Px_DEC_DIFF_CLMP_CTL_2(pg)	ISL7998x_REG((pg), 0x37)
+#define ISL7998x_REG_Px_DEC_DIFF_CLMP_CTL_3(pg)	ISL7998x_REG((pg), 0x38)
+#define ISL7998x_REG_Px_DEC_DIFF_CLMP_CTL_4(pg)	ISL7998x_REG((pg), 0x39)
+#define ISL7998x_REG_Px_DEC_SHORT_DET_CTL(pg)	ISL7998x_REG((pg), 0x3a)
+#define ISL7998x_REG_Px_DEC_SHORT_DET_CTL_1(pg)	ISL7998x_REG((pg), 0x3b)
+#define ISL7998x_REG_Px_DEC_AFE_TST_MUX_CTL(pg)	ISL7998x_REG((pg), 0x3c)
+#define ISL7998x_REG_Px_DEC_DATA_CONV(pg)	ISL7998x_REG((pg), 0x3d)
+#define ISL7998x_REG_Px_DEC_INTERNAL_TEST(pg)	ISL7998x_REG((pg), 0x3f)
+#define ISL7998x_REG_Px_DEC_H_DELAY_CTL(pg)	ISL7998x_REG((pg), 0x43)
+#define ISL7998x_REG_Px_DEC_H_DELAY_II_HI(pg)	ISL7998x_REG((pg), 0x44)
+#define ISL7998x_REG_Px_DEC_H_DELAY_II_LOW(pg)	ISL7998x_REG((pg), 0x45)
+
+#define ISL7998x_REG_Px_ACA_CTL_1(pg)		ISL7998x_REG((pg), 0x80)
+#define ISL7998x_REG_Px_ACA_GAIN_CTL(pg)	ISL7998x_REG((pg), 0x81)
+#define ISL7998x_REG_Px_ACA_Y_AVG_HI_LIMIT(pg)	ISL7998x_REG((pg), 0x82)
+#define ISL7998x_REG_Px_ACA_Y_AVG_LO_LIMIT(pg)	ISL7998x_REG((pg), 0x83)
+#define ISL7998x_REG_Px_ACA_Y_DET_THRESHOLD(pg)	ISL7998x_REG((pg), 0x84)
+#define ISL7998x_REG_Px_ACA_BLACK_LVL(pg)	ISL7998x_REG((pg), 0x85)
+#define ISL7998x_REG_Px_ACA_CENTER_LVL(pg)	ISL7998x_REG((pg), 0x86)
+#define ISL7998x_REG_Px_ACA_WHITE_LVL(pg)	ISL7998x_REG((pg), 0x87)
+#define ISL7998x_REG_Px_ACA_MEAN_OFF_LIMIT(pg)	ISL7998x_REG((pg), 0x88)
+#define ISL7998x_REG_Px_ACA_MEAN_OFF_UPGAIN(pg)	ISL7998x_REG((pg), 0x89)
+#define ISL7998x_REG_Px_ACA_MEAN_OFF_SLOPE(pg)	ISL7998x_REG((pg), 0x8a)
+#define ISL7998x_REG_Px_ACA_MEAN_OFF_DNGAIN(pg)	ISL7998x_REG((pg), 0x8b)
+#define ISL7998x_REG_Px_ACA_DELTA_CO_THRES(pg)	ISL7998x_REG((pg), 0x8c)
+#define ISL7998x_REG_Px_ACA_DELTA_SLOPE(pg)	ISL7998x_REG((pg), 0x8d)
+#define ISL7998x_REG_Px_ACA_LO_HI_AVG_THRES(pg)	ISL7998x_REG((pg), 0x8e)
+#define ISL7998x_REG_Px_ACA_LO_MAX_LVL_CTL(pg)	ISL7998x_REG((pg), 0x8f)
+#define ISL7998x_REG_Px_ACA_HI_MAX_LVL_CTL(pg)	ISL7998x_REG((pg), 0x90)
+#define ISL7998x_REG_Px_ACA_LO_UPGAIN_CTL(pg)	ISL7998x_REG((pg), 0x91)
+#define ISL7998x_REG_Px_ACA_LO_DNGAIN_CTL(pg)	ISL7998x_REG((pg), 0x92)
+#define ISL7998x_REG_Px_ACA_HI_UPGAIN_CTL(pg)	ISL7998x_REG((pg), 0x93)
+#define ISL7998x_REG_Px_ACA_HI_DNGAIN_CTL(pg)	ISL7998x_REG((pg), 0x94)
+#define ISL7998x_REG_Px_ACA_LOPASS_FLT_COEF(pg)	ISL7998x_REG((pg), 0x95)
+#define ISL7998x_REG_Px_ACA_PDF_INDEX(pg)	ISL7998x_REG((pg), 0x96)
+#define ISL7998x_REG_Px_ACA_HIST_WIN_H_STT(pg)	ISL7998x_REG((pg), 0x97)
+#define ISL7998x_REG_Px_ACA_HIST_WIN_H_SZ1(pg)	ISL7998x_REG((pg), 0x98)
+#define ISL7998x_REG_Px_ACA_HIST_WIN_H_SZ2(pg)	ISL7998x_REG((pg), 0x99)
+#define ISL7998x_REG_Px_ACA_HIST_WIN_V_STT(pg)	ISL7998x_REG((pg), 0x9a)
+#define ISL7998x_REG_Px_ACA_HIST_WIN_V_SZ1(pg)	ISL7998x_REG((pg), 0x9b)
+#define ISL7998x_REG_Px_ACA_HIST_WIN_V_SZ2(pg)	ISL7998x_REG((pg), 0x9c)
+#define ISL7998x_REG_Px_ACA_Y_AVG(pg)		ISL7998x_REG((pg), 0xa0)
+#define ISL7998x_REG_Px_ACA_Y_AVG_LIM(pg)	ISL7998x_REG((pg), 0xa1)
+#define ISL7998x_REG_Px_ACA_LO_AVG(pg)		ISL7998x_REG((pg), 0xa2)
+#define ISL7998x_REG_Px_ACA_HI_AVG(pg)		ISL7998x_REG((pg), 0xa3)
+#define ISL7998x_REG_Px_ACA_Y_MAX(pg)		ISL7998x_REG((pg), 0xa4)
+#define ISL7998x_REG_Px_ACA_Y_MIN(pg)		ISL7998x_REG((pg), 0xa5)
+#define ISL7998x_REG_Px_ACA_MOFFSET(pg)		ISL7998x_REG((pg), 0xa6)
+#define ISL7998x_REG_Px_ACA_LO_GAIN(pg)		ISL7998x_REG((pg), 0xa7)
+#define ISL7998x_REG_Px_ACA_HI_GAIN(pg)		ISL7998x_REG((pg), 0xa8)
+#define ISL7998x_REG_Px_ACA_LL_SLOPE(pg)	ISL7998x_REG((pg), 0xa9)
+#define ISL7998x_REG_Px_ACA_LH_SLOPE(pg)	ISL7998x_REG((pg), 0xaa)
+#define ISL7998x_REG_Px_ACA_HL_SLOPE(pg)	ISL7998x_REG((pg), 0xab)
+#define ISL7998x_REG_Px_ACA_HH_SLOPE(pg)	ISL7998x_REG((pg), 0xac)
+#define ISL7998x_REG_Px_ACA_X_LOW(pg)		ISL7998x_REG((pg), 0xad)
+#define ISL7998x_REG_Px_ACA_X_MEAN(pg)		ISL7998x_REG((pg), 0xae)
+#define ISL7998x_REG_Px_ACA_X_HIGH(pg)		ISL7998x_REG((pg), 0xaf)
+#define ISL7998x_REG_Px_ACA_Y_LOW(pg)		ISL7998x_REG((pg), 0xb0)
+#define ISL7998x_REG_Px_ACA_Y_MEAN(pg)		ISL7998x_REG((pg), 0xb1)
+#define ISL7998x_REG_Px_ACA_Y_HIGH(pg)		ISL7998x_REG((pg), 0xb2)
+#define ISL7998x_REG_Px_ACA_CTL_2(pg)		ISL7998x_REG((pg), 0xb3)
+#define ISL7998x_REG_Px_ACA_CTL_3(pg)		ISL7998x_REG((pg), 0xb4)
+#define ISL7998x_REG_Px_ACA_CTL_4(pg)		ISL7998x_REG((pg), 0xb5)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_HIST(pg)	ISL7998x_REG((pg), 0xc0)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_X_TL_H(pg)	ISL7998x_REG((pg), 0xc1)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_X_TL_L(pg)	ISL7998x_REG((pg), 0xc2)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_Y_TL_H(pg)	ISL7998x_REG((pg), 0xc3)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_Y_TL_L(pg)	ISL7998x_REG((pg), 0xc4)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_X_TR_H(pg)	ISL7998x_REG((pg), 0xc5)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_X_TR_L(pg)	ISL7998x_REG((pg), 0xc6)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_Y_TR_H(pg)	ISL7998x_REG((pg), 0xc7)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_Y_TR_L(pg)	ISL7998x_REG((pg), 0xc8)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_X_BL_H(pg)	ISL7998x_REG((pg), 0xc9)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_X_BL_L(pg)	ISL7998x_REG((pg), 0xca)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_Y_BL_H(pg)	ISL7998x_REG((pg), 0xcb)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_Y_BL_L(pg)	ISL7998x_REG((pg), 0xcc)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_X_BR_H(pg)	ISL7998x_REG((pg), 0xcd)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_X_BR_L(pg)	ISL7998x_REG((pg), 0xce)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_Y_BR_H(pg)	ISL7998x_REG((pg), 0xcf)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_Y_BR_L(pg)	ISL7998x_REG((pg), 0xd0)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_X_LM_H(pg)	ISL7998x_REG((pg), 0xd1)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_X_LM_L(pg)	ISL7998x_REG((pg), 0xd2)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_Y_LM_H(pg)	ISL7998x_REG((pg), 0xd3)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_Y_LM_L(pg)	ISL7998x_REG((pg), 0xd4)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_X_TM_H(pg)	ISL7998x_REG((pg), 0xd5)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_X_TM_L(pg)	ISL7998x_REG((pg), 0xd6)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_Y_TM_H(pg)	ISL7998x_REG((pg), 0xd7)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_Y_TM_L(pg)	ISL7998x_REG((pg), 0xd8)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_X_BM_H(pg)	ISL7998x_REG((pg), 0xd9)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_X_BM_L(pg)	ISL7998x_REG((pg), 0xda)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_Y_BM_H(pg)	ISL7998x_REG((pg), 0xdb)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_Y_BM_L(pg)	ISL7998x_REG((pg), 0xdc)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_X_RM_H(pg)	ISL7998x_REG((pg), 0xdd)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_X_RM_L(pg)	ISL7998x_REG((pg), 0xde)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_Y_RM_H(pg)	ISL7998x_REG((pg), 0xdf)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_Y_RM_L(pg)	ISL7998x_REG((pg), 0xe0)
+#define ISL7998x_REG_Px_ACA_HIST_DATA_LO(pg)	ISL7998x_REG((pg), 0xe1)
+#define ISL7998x_REG_Px_ACA_HIST_DATA_MID(pg)	ISL7998x_REG((pg), 0xe2)
+#define ISL7998x_REG_Px_ACA_HIST_DATA_HI(pg)	ISL7998x_REG((pg), 0xe3)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_Y_CLR(pg)	ISL7998x_REG((pg), 0xe4)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_CB_CLR(pg)	ISL7998x_REG((pg), 0xe5)
+#define ISL7998x_REG_Px_ACA_FLEX_WIN_CR_CLR(pg)	ISL7998x_REG((pg), 0xe6)
+#define ISL7998x_REG_Px_ACA_XFER_HIST_HOST(pg)	ISL7998x_REG((pg), 0xe7)
+
+#define ISL7998x_REG_P5_LI_ENGINE_CTL		ISL7998x_REG(5, 0x00)
+#define ISL7998x_REG_P5_LI_ENGINE_LINE_CTL	ISL7998x_REG(5, 0x01)
+#define ISL7998x_REG_P5_LI_ENGINE_PIC_WIDTH	ISL7998x_REG(5, 0x02)
+#define ISL7998x_REG_P5_LI_ENGINE_SYNC_CTL	ISL7998x_REG(5, 0x03)
+#define ISL7998x_REG_P5_LI_ENGINE_VC_ASSIGNMENT	ISL7998x_REG(5, 0x04)
+#define ISL7998x_REG_P5_LI_ENGINE_TYPE_CTL	ISL7998x_REG(5, 0x05)
+#define ISL7998x_REG_P5_LI_ENGINE_FIFO_CTL	ISL7998x_REG(5, 0x06)
+#define ISL7998x_REG_P5_MIPI_READ_START_CTL	ISL7998x_REG(5, 0x07)
+#define ISL7998x_REG_P5_PSEUDO_FRM_FIELD_CTL	ISL7998x_REG(5, 0x08)
+#define ISL7998x_REG_P5_ONE_FIELD_MODE_CTL	ISL7998x_REG(5, 0x09)
+#define ISL7998x_REG_P5_MIPI_INT_HW_TST_CTR	ISL7998x_REG(5, 0x0a)
+#define ISL7998x_REG_P5_TP_GEN_BAR_PATTERN	ISL7998x_REG(5, 0x0b)
+#define ISL7998x_REG_P5_MIPI_PCNT_PSFRM		ISL7998x_REG(5, 0x0c)
+#define ISL7998x_REG_P5_LI_ENGINE_TP_GEN_CTL	ISL7998x_REG(5, 0x0d)
+#define ISL7998x_REG_P5_MIPI_VBLANK_PSFRM	ISL7998x_REG(5, 0x0e)
+#define ISL7998x_REG_P5_LI_ENGINE_CTL_2		ISL7998x_REG(5, 0x0f)
+#define ISL7998x_REG_P5_MIPI_WCNT_1		ISL7998x_REG(5, 0x10)
+#define ISL7998x_REG_P5_MIPI_WCNT_2		ISL7998x_REG(5, 0x11)
+#define ISL7998x_REG_P5_MIPI_DPHY_TIMING_CTL_1	ISL7998x_REG(5, 0x12)
+#define ISL7998x_REG_P5_MIPI_DPHY_TIMING_CTL_2	ISL7998x_REG(5, 0x13)
+#define ISL7998x_REG_P5_MIPI_DPHY_TIMING_CTL_3	ISL7998x_REG(5, 0x14)
+#define ISL7998x_REG_P5_MIPI_DPHY_TIMING_CTL_4	ISL7998x_REG(5, 0x15)
+#define ISL7998x_REG_P5_MIPI_DPHY_TIMING_CTL_5	ISL7998x_REG(5, 0x16)
+#define ISL7998x_REG_P5_MIPI_DPHY_TIMING_CTL_6	ISL7998x_REG(5, 0x17)
+#define ISL7998x_REG_P5_MIPI_DPHY_PARAMS_1	ISL7998x_REG(5, 0x18)
+#define ISL7998x_REG_P5_MIPI_DPHY_SOT_PERIOD	ISL7998x_REG(5, 0x19)
+#define ISL7998x_REG_P5_MIPI_DPHY_EOT_PERIOD	ISL7998x_REG(5, 0x1a)
+#define ISL7998x_REG_P5_MIPI_DPHY_PARAMS_2	ISL7998x_REG(5, 0x1b)
+#define ISL7998x_REG_P5_MIPI_DPHY_TIMING_CTL_7	ISL7998x_REG(5, 0x1c)
+#define ISL7998x_REG_P5_MIPI_DPHY_TIMING_CTL_8	ISL7998x_REG(5, 0x1d)
+#define ISL7998x_REG_P5_MIPI_DPHY_TIMING_CTL_9	ISL7998x_REG(5, 0x1e)
+#define ISL7998x_REG_P5_MIPI_DPHY_TIMING_CTL_10	ISL7998x_REG(5, 0x1f)
+#define ISL7998x_REG_P5_TP_GEN_MIPI		ISL7998x_REG(5, 0x20)
+#define ISL7998x_REG_P5_ESC_MODE_TIME_CTL	ISL7998x_REG(5, 0x21)
+#define ISL7998x_REG_P5_AUTO_TEST_ERR_DET	ISL7998x_REG(5, 0x22)
+#define ISL7998x_REG_P5_MIPI_TIMING		ISL7998x_REG(5, 0x23)
+#define ISL7998x_REG_P5_PIC_HEIGHT_HIGH		ISL7998x_REG(5, 0x24)
+#define ISL7998x_REG_P5_PIC_HEIGHT_LOW		ISL7998x_REG(5, 0x25)
+#define ISL7998x_REG_P5_MIPI_SP_HS_TRL_CTL	ISL7998x_REG(5, 0x26)
+#define ISL7998x_REG_P5_FIFO_THRSH_CNT_1	ISL7998x_REG(5, 0x28)
+#define ISL7998x_REG_P5_FIFO_THRSH_CNT_2	ISL7998x_REG(5, 0x29)
+#define ISL7998x_REG_P5_TP_GEN_RND_SYNC_CTL_1	ISL7998x_REG(5, 0x2a)
+#define ISL7998x_REG_P5_TP_GEN_RND_SYNC_CTL_2	ISL7998x_REG(5, 0x2b)
+#define ISL7998x_REG_P5_PSF_FIELD_END_CTL_1	ISL7998x_REG(5, 0x2c)
+#define ISL7998x_REG_P5_PSF_FIELD_END_CTL_2	ISL7998x_REG(5, 0x2d)
+#define ISL7998x_REG_P5_PSF_FIELD_END_CTL_3	ISL7998x_REG(5, 0x2e)
+#define ISL7998x_REG_P5_PSF_FIELD_END_CTL_4	ISL7998x_REG(5, 0x2f)
+#define ISL7998x_REG_P5_MIPI_ANA_DATA_CTL_1	ISL7998x_REG(5, 0x30)
+#define ISL7998x_REG_P5_MIPI_ANA_DATA_CTL_2	ISL7998x_REG(5, 0x31)
+#define ISL7998x_REG_P5_MIPI_ANA_CLK_CTL	ISL7998x_REG(5, 0x32)
+#define ISL7998x_REG_P5_PLL_ANA_STATUS		ISL7998x_REG(5, 0x33)
+#define ISL7998x_REG_P5_PLL_ANA_MISC_CTL	ISL7998x_REG(5, 0x34)
+#define ISL7998x_REG_P5_MIPI_ANA		ISL7998x_REG(5, 0x35)
+#define ISL7998x_REG_P5_PLL_ANA			ISL7998x_REG(5, 0x36)
+#define ISL7998x_REG_P5_TOTAL_PF_LINE_CNT_1	ISL7998x_REG(5, 0x38)
+#define ISL7998x_REG_P5_TOTAL_PF_LINE_CNT_2	ISL7998x_REG(5, 0x39)
+#define ISL7998x_REG_P5_H_LINE_CNT_1		ISL7998x_REG(5, 0x3a)
+#define ISL7998x_REG_P5_H_LINE_CNT_2		ISL7998x_REG(5, 0x3b)
+#define ISL7998x_REG_P5_HIST_LINE_CNT_1		ISL7998x_REG(5, 0x3c)
+#define ISL7998x_REG_P5_HIST_LINE_CNT_2		ISL7998x_REG(5, 0x3d)
+
+static const struct reg_sequence isl7998x_init_seq_1[] = {
+	{ ISL7998x_REG_P0_SHORT_DIAG_IRQ_EN, 0xff },
+	{ ISL7998x_REG_Px_DEC_SDT(0x1), 0x00 },
+	{ ISL7998x_REG_Px_DEC_SHORT_DET_CTL_1(0x1), 0x03 },
+	{ ISL7998x_REG_Px_DEC_SDT(0x2), 0x00 },
+	{ ISL7998x_REG_Px_DEC_SHORT_DET_CTL_1(0x2), 0x03 },
+	{ ISL7998x_REG_Px_DEC_SDT(0x3), 0x00 },
+	{ ISL7998x_REG_Px_DEC_SHORT_DET_CTL_1(0x3), 0x03 },
+	{ ISL7998x_REG_Px_DEC_SDT(0x4), 0x00 },
+	{ ISL7998x_REG_Px_DEC_SHORT_DET_CTL_1(0x4), 0x03 },
+	{ ISL7998x_REG_P5_LI_ENGINE_CTL, 0x00 },
+	{ ISL7998x_REG_P0_SW_RESET_CTL, 0x1f, 10 },
+	{ ISL7998x_REG_P0_IO_BUFFER_CTL, 0x00 },
+	{ ISL7998x_REG_P0_MPP2_SYNC_CTL, 0xc9 },
+	{ ISL7998x_REG_P0_IRQ_SYNC_CTL, 0xc9 },
+	{ ISL7998x_REG_P0_CHAN_1_IRQ, 0x03 },
+	{ ISL7998x_REG_P0_CHAN_2_IRQ, 0x00 },
+	{ ISL7998x_REG_P0_CHAN_3_IRQ, 0x00 },
+	{ ISL7998x_REG_P0_CHAN_4_IRQ, 0x00 },
+	{ ISL7998x_REG_P5_LI_ENGINE_CTL, 0x02 },
+	{ ISL7998x_REG_P5_LI_ENGINE_LINE_CTL, 0x85 },
+	{ ISL7998x_REG_P5_LI_ENGINE_PIC_WIDTH, 0xa0 },
+	{ ISL7998x_REG_P5_LI_ENGINE_SYNC_CTL, 0x18 },
+	{ ISL7998x_REG_P5_LI_ENGINE_TYPE_CTL, 0x40 },
+	{ ISL7998x_REG_P5_LI_ENGINE_FIFO_CTL, 0x40 },
+	{ ISL7998x_REG_P5_MIPI_WCNT_1, 0x05 },
+	{ ISL7998x_REG_P5_MIPI_WCNT_2, 0xa0 },
+	{ ISL7998x_REG_P5_TP_GEN_MIPI, 0x00 },
+	{ ISL7998x_REG_P5_ESC_MODE_TIME_CTL, 0x0c },
+	{ ISL7998x_REG_P5_MIPI_SP_HS_TRL_CTL, 0x00 },
+	{ ISL7998x_REG_P5_TP_GEN_RND_SYNC_CTL_1, 0x00 },
+	{ ISL7998x_REG_P5_TP_GEN_RND_SYNC_CTL_2, 0x19 },
+	{ ISL7998x_REG_P5_PSF_FIELD_END_CTL_1, 0x18 },
+	{ ISL7998x_REG_P5_PSF_FIELD_END_CTL_2, 0xf1 },
+	{ ISL7998x_REG_P5_PSF_FIELD_END_CTL_3, 0x00 },
+	{ ISL7998x_REG_P5_PSF_FIELD_END_CTL_4, 0xf1 },
+	{ ISL7998x_REG_P5_MIPI_ANA_DATA_CTL_1, 0x00 },
+	{ ISL7998x_REG_P5_MIPI_ANA_DATA_CTL_2, 0x00 },
+	{ ISL7998x_REG_P5_MIPI_ANA_CLK_CTL, 0x00 },
+	{ ISL7998x_REG_P5_PLL_ANA_STATUS, 0xc0 },
+	{ ISL7998x_REG_P5_PLL_ANA_MISC_CTL, 0x18 },
+	{ ISL7998x_REG_P5_PLL_ANA, 0x00 },
+	{ ISL7998x_REG_P0_SW_RESET_CTL, 0x10, 10 },
+	/* Page 0xf means write to all of pages 1,2,3,4 */
+	{ ISL7998x_REG_Px_DEC_VDELAY_LO(0xf), 0x14 },
+	{ ISL7998x_REG_Px_DEC_MISC3(0xf), 0xe6 },
+	{ ISL7998x_REG_Px_DEC_CLMD(0xf), 0x85 },
+	{ ISL7998x_REG_Px_DEC_H_DELAY_II_LOW(0xf), 0x11 },
+	{ ISL7998x_REG_Px_ACA_XFER_HIST_HOST(0xf), 0x00 },
+	{ ISL7998x_REG_P0_CLK_CTL_1, 0x1f },
+	{ ISL7998x_REG_P0_CLK_CTL_2, 0x43 },
+	{ ISL7998x_REG_P0_CLK_CTL_3, 0x4f },
+};
+
+static const struct reg_sequence isl7998x_init_seq_2[] = {
+	{ ISL7998x_REG_P5_LI_ENGINE_SYNC_CTL, 0x10 },
+	{ ISL7998x_REG_P5_LI_ENGINE_VC_ASSIGNMENT, 0xe4 },
+	{ ISL7998x_REG_P5_LI_ENGINE_TYPE_CTL, 0x00 },
+	{ ISL7998x_REG_P5_LI_ENGINE_FIFO_CTL, 0x60 },
+	{ ISL7998x_REG_P5_MIPI_READ_START_CTL, 0x2b },
+	{ ISL7998x_REG_P5_PSEUDO_FRM_FIELD_CTL, 0x02 },
+	{ ISL7998x_REG_P5_ONE_FIELD_MODE_CTL, 0x00 },
+	{ ISL7998x_REG_P5_MIPI_INT_HW_TST_CTR, 0x62 },
+	{ ISL7998x_REG_P5_TP_GEN_BAR_PATTERN, 0x02 },
+	{ ISL7998x_REG_P5_MIPI_PCNT_PSFRM, 0x36 },
+	{ ISL7998x_REG_P5_LI_ENGINE_TP_GEN_CTL, 0x00 },
+	{ ISL7998x_REG_P5_MIPI_VBLANK_PSFRM, 0x6c },
+	{ ISL7998x_REG_P5_LI_ENGINE_CTL_2, 0x00 },
+	{ ISL7998x_REG_P5_MIPI_WCNT_1, 0x05 },
+	{ ISL7998x_REG_P5_MIPI_WCNT_2, 0xa0 },
+	{ ISL7998x_REG_P5_MIPI_DPHY_TIMING_CTL_1, 0x77 },
+	{ ISL7998x_REG_P5_MIPI_DPHY_TIMING_CTL_2, 0x17 },
+	{ ISL7998x_REG_P5_MIPI_DPHY_TIMING_CTL_3, 0x08 },
+	{ ISL7998x_REG_P5_MIPI_DPHY_TIMING_CTL_4, 0x38 },
+	{ ISL7998x_REG_P5_MIPI_DPHY_TIMING_CTL_5, 0x14 },
+	{ ISL7998x_REG_P5_MIPI_DPHY_TIMING_CTL_6, 0xf6 },
+	{ ISL7998x_REG_P5_MIPI_DPHY_PARAMS_1, 0x00 },
+	{ ISL7998x_REG_P5_MIPI_DPHY_SOT_PERIOD, 0x17 },
+	{ ISL7998x_REG_P5_MIPI_DPHY_EOT_PERIOD, 0x0a },
+	{ ISL7998x_REG_P5_MIPI_DPHY_PARAMS_2, 0x71 },
+	{ ISL7998x_REG_P5_MIPI_DPHY_TIMING_CTL_7, 0x7a },
+	{ ISL7998x_REG_P5_MIPI_DPHY_TIMING_CTL_8, 0x0f },
+	{ ISL7998x_REG_P5_MIPI_DPHY_TIMING_CTL_9, 0x8c },
+	{ ISL7998x_REG_P5_MIPI_SP_HS_TRL_CTL, 0x08 },
+	{ ISL7998x_REG_P5_FIFO_THRSH_CNT_1, 0x01 },
+	{ ISL7998x_REG_P5_FIFO_THRSH_CNT_2, 0x0e },
+	{ ISL7998x_REG_P5_TP_GEN_RND_SYNC_CTL_1, 0x00 },
+	{ ISL7998x_REG_P5_TP_GEN_RND_SYNC_CTL_2, 0x00 },
+	{ ISL7998x_REG_P5_TOTAL_PF_LINE_CNT_1, 0x03 },
+	{ ISL7998x_REG_P5_TOTAL_PF_LINE_CNT_2, 0xc0 },
+	{ ISL7998x_REG_P5_H_LINE_CNT_1, 0x06 },
+	{ ISL7998x_REG_P5_H_LINE_CNT_2, 0xb3 },
+	{ ISL7998x_REG_P5_HIST_LINE_CNT_1, 0x00 },
+	{ ISL7998x_REG_P5_HIST_LINE_CNT_2, 0xf1 },
+	{ ISL7998x_REG_P5_LI_ENGINE_FIFO_CTL, 0x00 },
+	{ ISL7998x_REG_P5_MIPI_ANA, 0x00 },
+	/*
+	 * Wait a bit after reset so that the chip can capture a frame
+	 * and update internal line counters.
+	 */
+	{ ISL7998x_REG_P0_SW_RESET_CTL, 0x00, 50 },
+};
+
+enum isl7998x_pads {
+	ISL7998x_PAD_OUT,
+	ISL7998x_PAD_VIN1,
+	ISL7998x_PAD_VIN2,
+	ISL7998x_PAD_VIN3,
+	ISL7998x_PAD_VIN4,
+	ISL7998x_NUM_PADS
+};
+
+struct isl7998x_datafmt {
+	u32			code;
+	enum v4l2_colorspace	colorspace;
+};
+
+static const struct isl7998x_datafmt isl7998x_colour_fmts[] = {
+	{ MEDIA_BUS_FMT_UYVY8_2X8, V4L2_COLORSPACE_SRGB },
+};
+
+/* Menu items for LINK_FREQ V4L2 control */
+static const s64 link_freq_menu_items[] = {
+	/* 1 channel, 1 lane or 2 channels, 2 lanes */
+	108000000,
+	/* 2 channels, 1 lane or 4 channels, 2 lanes */
+	216000000,
+	/* 4 channels, 1 lane */
+	432000000,
+};
+
+/* Menu items for TEST_PATTERN V4L2 control */
+static const char * const isl7998x_test_pattern_menu[] = {
+	"Disabled",
+	"Enabled",
+};
+
+static const char * const isl7998x_test_pattern_bars[] = {
+	"bbbbwb", "bbbwwb", "bbwbwb", "bbwwwb",
+};
+
+static const char * const isl7998x_test_pattern_colors[] = {
+	"Yellow", "Blue", "Green", "Pink",
+};
+
+struct isl7998x_mode {
+	unsigned int width;
+	unsigned int height;
+	enum v4l2_field field;
+};
+
+static const struct isl7998x_mode supported_modes[] = {
+	{
+		.width = 720,
+		.height = 576,
+		.field = V4L2_FIELD_SEQ_TB,
+	},
+	{
+		.width = 720,
+		.height = 480,
+		.field = V4L2_FIELD_SEQ_BT,
+	},
+};
+
+static const struct isl7998x_video_std {
+	unsigned int id;
+	const struct isl7998x_mode *mode;
+	const v4l2_std_id norm;
+} isl7998x_std_res[] = {
+	{ 0, &supported_modes[1], V4L2_STD_NTSC},
+	{ 1, &supported_modes[0], V4L2_STD_PAL},
+	{ 2, &supported_modes[0], V4L2_STD_SECAM},
+	{ 3, &supported_modes[1], V4L2_STD_NTSC_443},
+	{ 4, &supported_modes[1], V4L2_STD_PAL_M},
+	{ 5, &supported_modes[0], V4L2_STD_PAL_N},
+	{ 6, &supported_modes[1], V4L2_STD_PAL_60},
+	{ 7, NULL, V4L2_STD_UNKNOWN},
+};
+
+struct isl7998x {
+	struct v4l2_subdev		subdev;
+	struct regmap			*regmap;
+	struct gpio_desc		*pd_gpio;
+	struct gpio_desc		*rstb_gpio;
+	unsigned int			nr_mipi_lanes;
+	u32				nr_inputs;
+
+	const struct isl7998x_datafmt	*fmt;
+	v4l2_std_id			norm;
+	struct media_pad		pads[ISL7998x_NUM_PADS];
+
+	int				enabled;
+
+	struct v4l2_ctrl_handler	ctrl_handler;
+	/* protect ctrl_handler */
+	struct mutex			ctrl_mutex;
+
+	/* V4L2 Controls */
+	struct v4l2_ctrl		*link_freq;
+	u8				test_pattern;
+	u8				test_pattern_bars;
+	u8				test_pattern_chans;
+	u8				test_pattern_color;
+};
+
+static struct isl7998x *sd_to_isl7998x(struct v4l2_subdev *sd)
+{
+	return container_of(sd, struct isl7998x, subdev);
+}
+
+static struct isl7998x *i2c_to_isl7998x(const struct i2c_client *client)
+{
+	return sd_to_isl7998x(i2c_get_clientdata(client));
+}
+
+static unsigned int isl7998x_norm_to_val(v4l2_std_id norm)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(isl7998x_std_res); i++)
+		if (isl7998x_std_res[i].norm & norm)
+			return isl7998x_std_res[i].id;
+
+	return 7;
+}
+
+static const struct isl7998x_mode *isl7998x_get_mode(struct isl7998x *isl7998x)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(isl7998x_std_res); i++)
+		if (isl7998x_std_res[i].norm & isl7998x->norm)
+			return isl7998x_std_res[i].mode;
+
+	return NULL;
+}
+
+static int isl7998x_get_nr_inputs(struct device_node *of_node)
+{
+	struct device_node *port;
+	unsigned int inputs = 0;
+	unsigned int i;
+
+	if (of_graph_get_endpoint_count(of_node) > ISL7998x_NUM_PADS)
+		return -EINVAL;
+
+	/*
+	 * The driver does not provide means to remap the input ports. It
+	 * always configures input ports to start from VID1. Ensure that the
+	 * device tree is correct.
+	 */
+	for (i = ISL7998x_PAD_VIN1; i <= ISL7998x_PAD_VIN4; i++) {
+		port = of_graph_get_port_by_id(of_node, i);
+		if (!port)
+			continue;
+
+		inputs |= BIT(i);
+		of_node_put(port);
+	}
+
+	switch (inputs) {
+	case BIT(ISL7998x_PAD_VIN1):
+		return 1;
+	case BIT(ISL7998x_PAD_VIN1) | BIT(ISL7998x_PAD_VIN2):
+		return 2;
+	case BIT(ISL7998x_PAD_VIN1) | BIT(ISL7998x_PAD_VIN2) |
+	     BIT(ISL7998x_PAD_VIN3) | BIT(ISL7998x_PAD_VIN4):
+		return 4;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int isl7998x_wait_power_on(struct isl7998x *isl7998x)
+{
+	struct device *dev = isl7998x->subdev.dev;
+	u32 chip_id;
+	int ret;
+	int err;
+
+	ret = read_poll_timeout(regmap_read, err, !err, 2000, 20000, false,
+				isl7998x->regmap,
+				ISL7998x_REG_P0_PRODUCT_ID_CODE, &chip_id);
+	if (ret) {
+		dev_err(dev, "timeout while waiting for ISL7998x\n");
+		return ret;
+	}
+
+	dev_dbg(dev, "Found ISL799%x\n", chip_id);
+
+	return ret;
+}
+
+static int isl7998x_set_standard(struct isl7998x *isl7998x, v4l2_std_id norm)
+{
+	const struct isl7998x_mode *mode = isl7998x_get_mode(isl7998x);
+	unsigned int val = isl7998x_norm_to_val(norm);
+	unsigned int width = mode->width;
+	unsigned int i;
+	int ret;
+
+	for (i = 0; i < ISL7998x_INPUTS; i++) {
+		ret = regmap_write_bits(isl7998x->regmap,
+					ISL7998x_REG_Px_DEC_SDT(i + 1),
+					ISL7998x_REG_Px_DEC_SDT_STANDARD,
+					val);
+		if (ret)
+			return ret;
+	}
+
+	ret = regmap_write(isl7998x->regmap,
+			   ISL7998x_REG_P5_LI_ENGINE_LINE_CTL,
+			   0x20 | ((width >> 7) & 0x1f));
+	if (ret)
+		return ret;
+
+	ret = regmap_write(isl7998x->regmap,
+			   ISL7998x_REG_P5_LI_ENGINE_PIC_WIDTH,
+			   (width << 1) & 0xff);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static int isl7998x_init(struct isl7998x *isl7998x)
+{
+	const unsigned int lanes = isl7998x->nr_mipi_lanes;
+	const u32 isl7998x_video_in_chan_map[] = { 0x00, 0x11, 0x02, 0x02 };
+	const struct reg_sequence isl7998x_init_seq_custom[] = {
+		{ ISL7998x_REG_P0_VIDEO_IN_CHAN_CTL,
+		  isl7998x_video_in_chan_map[isl7998x->nr_inputs - 1] },
+		{ ISL7998x_REG_P0_CLK_CTL_4,
+		  (lanes == 1) ? 0x40 : 0x41 },
+		{ ISL7998x_REG_P5_LI_ENGINE_CTL,
+		  (lanes == 1) ? 0x01 : 0x02 },
+	};
+	struct device *dev = isl7998x->subdev.dev;
+	struct regmap *regmap = isl7998x->regmap;
+	int ret;
+
+	dev_dbg(dev, "configuring %d lanes for %d inputs (norm 0x%llx)\n",
+		isl7998x->nr_mipi_lanes, isl7998x->nr_inputs,
+		isl7998x->norm);
+
+	ret = regmap_register_patch(regmap, isl7998x_init_seq_1,
+				    ARRAY_SIZE(isl7998x_init_seq_1));
+	if (ret)
+		return ret;
+
+	ret = isl7998x_set_standard(isl7998x, isl7998x->norm);
+	if (ret)
+		return ret;
+
+	ret = regmap_register_patch(regmap, isl7998x_init_seq_custom,
+				    ARRAY_SIZE(isl7998x_init_seq_custom));
+	if (ret)
+		return ret;
+
+	return regmap_register_patch(regmap, isl7998x_init_seq_2,
+				     ARRAY_SIZE(isl7998x_init_seq_2));
+}
+
+static int isl7998x_set_test_pattern(struct isl7998x *isl7998x)
+{
+	const struct reg_sequence isl7998x_init_seq_tpg_off[] = {
+		{ ISL7998x_REG_P5_LI_ENGINE_TP_GEN_CTL, 0 },
+		{ ISL7998x_REG_P5_LI_ENGINE_CTL_2, 0 }
+	};
+	const struct reg_sequence isl7998x_init_seq_tpg_on[] = {
+		{ ISL7998x_REG_P5_TP_GEN_BAR_PATTERN,
+		  isl7998x->test_pattern_bars << 6 },
+		{ ISL7998x_REG_P5_LI_ENGINE_CTL_2,
+		  isl7998x->norm & V4L2_STD_PAL ? BIT(2) : 0 },
+		{ ISL7998x_REG_P5_LI_ENGINE_TP_GEN_CTL,
+		  (isl7998x->test_pattern_chans << 4) |
+		  (isl7998x->test_pattern_color << 2) }
+	};
+	struct device *dev = isl7998x->subdev.dev;
+	struct regmap *regmap = isl7998x->regmap;
+	int ret;
+
+	if (!pm_runtime_enabled(dev) || !pm_runtime_get_if_in_use(dev))
+		return 0;
+
+	if (isl7998x->test_pattern != 0) {
+		dev_dbg(dev, "enabling test pattern: channels 0x%x, %s, %s\n",
+			isl7998x->test_pattern_chans,
+			isl7998x_test_pattern_bars[isl7998x->test_pattern_bars],
+			isl7998x_test_pattern_colors[isl7998x->test_pattern_color]);
+		ret = regmap_register_patch(regmap, isl7998x_init_seq_tpg_on,
+					    ARRAY_SIZE(isl7998x_init_seq_tpg_on));
+	} else {
+		ret = regmap_register_patch(regmap, isl7998x_init_seq_tpg_off,
+					    ARRAY_SIZE(isl7998x_init_seq_tpg_off));
+	}
+
+	pm_runtime_put(dev);
+
+	return ret;
+}
+
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+static int isl7998x_g_register(struct v4l2_subdev *sd,
+			       struct v4l2_dbg_register *reg)
+{
+	struct isl7998x *isl7998x = sd_to_isl7998x(sd);
+	int ret;
+	u32 val;
+
+	ret = regmap_read(isl7998x->regmap, reg->reg, &val);
+	if (ret)
+		return ret;
+
+	reg->size = 1;
+	reg->val = val;
+
+	return 0;
+}
+
+static int isl7998x_s_register(struct v4l2_subdev *sd,
+			       const struct v4l2_dbg_register *reg)
+{
+	struct isl7998x *isl7998x = sd_to_isl7998x(sd);
+
+	return regmap_write(isl7998x->regmap, reg->reg, reg->val);
+}
+#endif
+
+static int isl7998x_g_std(struct v4l2_subdev *sd, v4l2_std_id *norm)
+{
+	struct isl7998x *isl7998x = sd_to_isl7998x(sd);
+
+	*norm = isl7998x->norm;
+
+	return 0;
+}
+
+static int isl7998x_s_std(struct v4l2_subdev *sd, v4l2_std_id norm)
+{
+	struct isl7998x *isl7998x = sd_to_isl7998x(sd);
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	struct device *dev = &client->dev;
+	int ret;
+
+	if (isl7998x->enabled)
+		return -EBUSY;
+
+	isl7998x->norm = norm;
+
+	if (!pm_runtime_enabled(dev) || !pm_runtime_get_if_in_use(dev))
+		return 0;
+
+	ret = isl7998x_set_standard(isl7998x, isl7998x->norm);
+
+	pm_runtime_put(dev);
+
+	return ret;
+}
+
+static int isl7998x_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
+{
+	struct isl7998x *isl7998x = sd_to_isl7998x(sd);
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	struct device *dev = &client->dev;
+	unsigned int std_id[ISL7998x_INPUTS];
+	unsigned int i;
+	int ret;
+	u32 reg;
+
+	if (isl7998x->enabled)
+		return -EBUSY;
+
+	ret = pm_runtime_resume_and_get(dev);
+	if (ret)
+		return ret;
+
+	dev_dbg(dev, "starting video standard detection\n");
+
+	ret = isl7998x_set_standard(isl7998x, V4L2_STD_UNKNOWN);
+	if (ret)
+		goto out_suspend;
+
+	for (i = 0; i < ISL7998x_INPUTS; i++) {
+		ret = regmap_read_poll_timeout(isl7998x->regmap,
+				ISL7998x_REG_Px_DEC_SDT(i + 1),
+				reg, !(reg & ISL7998x_REG_Px_DEC_SDT_DET),
+				2000, 500 * USEC_PER_MSEC);
+		if (ret)
+			goto out_reset_std;
+		std_id[i] = FIELD_GET(ISL7998x_REG_Px_DEC_SDT_NOW, reg);
+	}
+
+	/*
+	 * According to Renesas FAE, all input cameras must have the
+	 * same standard on this chip.
+	 */
+	for (i = 0; i < isl7998x->nr_inputs; i++) {
+		dev_dbg(dev, "input %d: detected %s\n",
+			i, v4l2_norm_to_name(isl7998x_std_res[std_id[i]].norm));
+		if (std_id[0] != std_id[i])
+			dev_warn(dev,
+				 "incompatible standards: %s on input %d (expected %s)\n",
+				 v4l2_norm_to_name(isl7998x_std_res[std_id[i]].norm), i,
+				 v4l2_norm_to_name(isl7998x_std_res[std_id[0]].norm));
+	}
+
+	*std = isl7998x_std_res[std_id[0]].norm;
+
+out_reset_std:
+	isl7998x_set_standard(isl7998x, isl7998x->norm);
+out_suspend:
+	pm_runtime_put(dev);
+
+	return ret;
+}
+
+static int isl7998x_g_tvnorms(struct v4l2_subdev *sd, v4l2_std_id *std)
+{
+	*std = V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM;
+
+	return 0;
+}
+
+static int isl7998x_g_input_status(struct v4l2_subdev *sd, u32 *status)
+{
+	struct isl7998x *isl7998x = sd_to_isl7998x(sd);
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	struct device *dev = &client->dev;
+	unsigned int i;
+	int ret = 0;
+	u32 reg;
+
+	if (!pm_runtime_active(dev)) {
+		*status |= V4L2_IN_ST_NO_POWER;
+		return 0;
+	}
+
+	for (i = 0; i < isl7998x->nr_inputs; i++) {
+		ret = regmap_read(isl7998x->regmap,
+				  ISL7998x_REG_Px_DEC_STATUS_1(i + 1), &reg);
+		if (!ret) {
+			if (reg & ISL7998x_REG_Px_DEC_STATUS_1_VDLOSS)
+				*status |= V4L2_IN_ST_NO_SIGNAL;
+			if (!(reg & ISL7998x_REG_Px_DEC_STATUS_1_HLOCK))
+				*status |= V4L2_IN_ST_NO_H_LOCK;
+			if (!(reg & ISL7998x_REG_Px_DEC_STATUS_1_VLOCK))
+				*status |= V4L2_IN_ST_NO_V_LOCK;
+		}
+	}
+
+	return ret;
+}
+
+static int isl7998x_s_stream(struct v4l2_subdev *sd, int enable)
+{
+	struct isl7998x *isl7998x = sd_to_isl7998x(sd);
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	struct device *dev = &client->dev;
+	int ret = 0;
+	u32 reg;
+
+	dev_dbg(dev, "stream %s\n", enable ? "ON" : "OFF");
+
+	if (isl7998x->enabled == enable)
+		return 0;
+	isl7998x->enabled = enable;
+
+	if (enable) {
+		ret = isl7998x_set_test_pattern(isl7998x);
+		if (ret)
+			return ret;
+	}
+
+	regmap_read(isl7998x->regmap,
+		    ISL7998x_REG_P5_LI_ENGINE_CTL, &reg);
+	if (enable)
+		reg &= ~BIT(7);
+	else
+		reg |= BIT(7);
+	ret = regmap_write(isl7998x->regmap,
+			   ISL7998x_REG_P5_LI_ENGINE_CTL, reg);
+
+	return ret;
+}
+
+static int isl7998x_pre_streamon(struct v4l2_subdev *sd, u32 flags)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	struct device *dev = &client->dev;
+
+	if (flags & V4L2_SUBDEV_PRE_STREAMON_FL_MANUAL_LP)
+		return pm_runtime_resume_and_get(dev);
+
+	return 0;
+}
+
+static int isl7998x_post_streamoff(struct v4l2_subdev *sd)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+	struct device *dev = &client->dev;
+
+	pm_runtime_put(dev);
+
+	return 0;
+}
+
+static int isl7998x_enum_mbus_code(struct v4l2_subdev *sd,
+				   struct v4l2_subdev_state *sd_state,
+				   struct v4l2_subdev_mbus_code_enum *code)
+{
+	if (code->index >= ARRAY_SIZE(isl7998x_colour_fmts))
+		return -EINVAL;
+
+	code->code = isl7998x_colour_fmts[code->index].code;
+
+	return 0;
+}
+
+static int isl7998x_enum_frame_size(struct v4l2_subdev *sd,
+				    struct v4l2_subdev_state *sd_state,
+				    struct v4l2_subdev_frame_size_enum *fse)
+{
+	if (fse->index >= ARRAY_SIZE(supported_modes))
+		return -EINVAL;
+
+	if (fse->code != isl7998x_colour_fmts[0].code)
+		return -EINVAL;
+
+	fse->min_width = supported_modes[fse->index].width;
+	fse->max_width = fse->min_width;
+	fse->min_height = supported_modes[fse->index].height;
+	fse->max_height = fse->min_height;
+
+	return 0;
+}
+
+static int isl7998x_get_fmt(struct v4l2_subdev *sd,
+			    struct v4l2_subdev_state *sd_state,
+			    struct v4l2_subdev_format *format)
+{
+	struct isl7998x *isl7998x = sd_to_isl7998x(sd);
+	struct v4l2_mbus_framefmt *mf = &format->format;
+	const struct isl7998x_mode *mode = isl7998x_get_mode(isl7998x);
+
+	if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
+		format->format = *v4l2_subdev_get_try_format(sd, sd_state,
+							     format->pad);
+		return 0;
+	}
+
+	mf->width	= mode->width;
+	mf->height	= mode->height;
+	mf->code	= isl7998x->fmt->code;
+	mf->field	= mode->field;
+	mf->colorspace	= 0;
+
+	return 0;
+}
+
+static int isl7998x_set_fmt(struct v4l2_subdev *sd,
+			    struct v4l2_subdev_state *sd_state,
+			    struct v4l2_subdev_format *format)
+{
+	struct isl7998x *isl7998x = sd_to_isl7998x(sd);
+	struct v4l2_mbus_framefmt *mf = &format->format;
+	const struct isl7998x_mode *mode = isl7998x_get_mode(isl7998x);
+
+	mf->width = mode->width;
+	mf->height = mode->height;
+	mf->code = isl7998x->fmt->code;
+	mf->field = mode->field;
+
+	if (format->which == V4L2_SUBDEV_FORMAT_TRY)
+		*v4l2_subdev_get_try_format(sd, sd_state, format->pad) = format->format;
+
+	return 0;
+}
+
+static int isl7998x_set_ctrl(struct v4l2_ctrl *ctrl)
+{
+	struct isl7998x *isl7998x = container_of(ctrl->handler,
+						 struct isl7998x, ctrl_handler);
+
+	switch (ctrl->id) {
+	case V4L2_CID_TEST_PATTERN_BARS:
+		isl7998x->test_pattern_bars = ctrl->val & 0x3;
+		return isl7998x_set_test_pattern(isl7998x);
+	case V4L2_CID_TEST_PATTERN_CHANNELS:
+		isl7998x->test_pattern_chans = ctrl->val & 0xf;
+		return isl7998x_set_test_pattern(isl7998x);
+	case V4L2_CID_TEST_PATTERN_COLOR:
+		isl7998x->test_pattern_color = ctrl->val & 0x3;
+		return isl7998x_set_test_pattern(isl7998x);
+	case V4L2_CID_TEST_PATTERN:
+		isl7998x->test_pattern = ctrl->val;
+		return isl7998x_set_test_pattern(isl7998x);
+	}
+
+	return 0;
+}
+
+static const struct v4l2_subdev_core_ops isl7998x_subdev_core_ops = {
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+	.g_register	= isl7998x_g_register,
+	.s_register	= isl7998x_s_register,
+#endif
+};
+
+static const struct v4l2_subdev_video_ops isl7998x_subdev_video_ops = {
+	.g_std		= isl7998x_g_std,
+	.s_std		= isl7998x_s_std,
+	.querystd	= isl7998x_querystd,
+	.g_tvnorms	= isl7998x_g_tvnorms,
+	.g_input_status	= isl7998x_g_input_status,
+	.s_stream	= isl7998x_s_stream,
+	.pre_streamon	= isl7998x_pre_streamon,
+	.post_streamoff	= isl7998x_post_streamoff,
+};
+
+static const struct v4l2_subdev_pad_ops isl7998x_subdev_pad_ops = {
+	.enum_mbus_code		= isl7998x_enum_mbus_code,
+	.enum_frame_size	= isl7998x_enum_frame_size,
+	.get_fmt		= isl7998x_get_fmt,
+	.set_fmt		= isl7998x_set_fmt,
+};
+
+static const struct v4l2_subdev_ops isl7998x_subdev_ops = {
+	.core		= &isl7998x_subdev_core_ops,
+	.video		= &isl7998x_subdev_video_ops,
+	.pad		= &isl7998x_subdev_pad_ops,
+};
+
+static const struct media_entity_operations isl7998x_entity_ops = {
+	.link_validate = v4l2_subdev_link_validate,
+};
+
+static const struct v4l2_ctrl_ops isl7998x_ctrl_ops = {
+	.s_ctrl			= isl7998x_set_ctrl,
+};
+
+static const struct v4l2_ctrl_config isl7998x_ctrls[] = {
+	{
+		.ops		= &isl7998x_ctrl_ops,
+		.id		= V4L2_CID_TEST_PATTERN_BARS,
+		.type		= V4L2_CTRL_TYPE_MENU,
+		.name		= "Test Pattern Bars",
+		.max		= ARRAY_SIZE(isl7998x_test_pattern_bars) - 1,
+		.def		= 0,
+		.qmenu		= isl7998x_test_pattern_bars,
+	}, {
+		.ops		= &isl7998x_ctrl_ops,
+		.id		= V4L2_CID_TEST_PATTERN_CHANNELS,
+		.type		= V4L2_CTRL_TYPE_INTEGER,
+		.name		= "Test Pattern Channels",
+		.min		= 0,
+		.max		= 0xf,
+		.step		= 1,
+		.def		= 0xf,
+		.flags		= 0,
+	}, {
+		.ops		= &isl7998x_ctrl_ops,
+		.id		= V4L2_CID_TEST_PATTERN_COLOR,
+		.type		= V4L2_CTRL_TYPE_MENU,
+		.name		= "Test Pattern Color",
+		.max		= ARRAY_SIZE(isl7998x_test_pattern_colors) - 1,
+		.def		= 0,
+		.qmenu		= isl7998x_test_pattern_colors,
+	},
+};
+
+#define ISL7998x_REG_DECODER_ACA_READABLE_RANGE(page)			\
+	/* Decoder range */						\
+	regmap_reg_range(ISL7998x_REG_Px_DEC_INPUT_FMT(page),		\
+			 ISL7998x_REG_Px_DEC_HS_DELAY_CTL(page)),	\
+	regmap_reg_range(ISL7998x_REG_Px_DEC_ANCTL(page),		\
+			 ISL7998x_REG_Px_DEC_CSC_CTL(page)),		\
+	regmap_reg_range(ISL7998x_REG_Px_DEC_BRIGHT(page),		\
+			 ISL7998x_REG_Px_DEC_HUE(page)),		\
+	regmap_reg_range(ISL7998x_REG_Px_DEC_VERT_PEAK(page),		\
+			 ISL7998x_REG_Px_DEC_CORING(page)),		\
+	regmap_reg_range(ISL7998x_REG_Px_DEC_SDT(page),			\
+			 ISL7998x_REG_Px_DEC_SDTR(page)),		\
+	regmap_reg_range(ISL7998x_REG_Px_DEC_CLMPG(page),		\
+			 ISL7998x_REG_Px_DEC_DATA_CONV(page)),		\
+	regmap_reg_range(ISL7998x_REG_Px_DEC_INTERNAL_TEST(page),	\
+			 ISL7998x_REG_Px_DEC_INTERNAL_TEST(page)),	\
+	regmap_reg_range(ISL7998x_REG_Px_DEC_H_DELAY_CTL(page),		\
+			 ISL7998x_REG_Px_DEC_H_DELAY_II_LOW(page)),	\
+	/* ACA range */							\
+	regmap_reg_range(ISL7998x_REG_Px_ACA_CTL_1(page),		\
+			 ISL7998x_REG_Px_ACA_HIST_WIN_V_SZ2(page)),	\
+	regmap_reg_range(ISL7998x_REG_Px_ACA_Y_AVG(page),		\
+			 ISL7998x_REG_Px_ACA_CTL_4(page)),		\
+	regmap_reg_range(ISL7998x_REG_Px_ACA_FLEX_WIN_HIST(page),	\
+			 ISL7998x_REG_Px_ACA_XFER_HIST_HOST(page)),	\
+	regmap_reg_range(ISL7998x_REG_Px_DEC_PAGE(page),		\
+			 ISL7998x_REG_Px_DEC_PAGE(page))
+
+#define ISL7998x_REG_DECODER_ACA_WRITEABLE_RANGE(page)			\
+	/* Decoder range */						\
+	regmap_reg_range(ISL7998x_REG_Px_DEC_INPUT_FMT(page),		\
+			 ISL7998x_REG_Px_DEC_INPUT_FMT(page)),		\
+	regmap_reg_range(ISL7998x_REG_Px_DEC_HS_DELAY_CTL(page),	\
+			 ISL7998x_REG_Px_DEC_HS_DELAY_CTL(page)),	\
+	regmap_reg_range(ISL7998x_REG_Px_DEC_ANCTL(page),		\
+			 ISL7998x_REG_Px_DEC_CSC_CTL(page)),		\
+	regmap_reg_range(ISL7998x_REG_Px_DEC_BRIGHT(page),		\
+			 ISL7998x_REG_Px_DEC_HUE(page)),		\
+	regmap_reg_range(ISL7998x_REG_Px_DEC_VERT_PEAK(page),		\
+			 ISL7998x_REG_Px_DEC_CORING(page)),		\
+	regmap_reg_range(ISL7998x_REG_Px_DEC_SDT(page),			\
+			 ISL7998x_REG_Px_DEC_SDTR(page)),		\
+	regmap_reg_range(ISL7998x_REG_Px_DEC_CLMPG(page),		\
+			 ISL7998x_REG_Px_DEC_MISC3(page)),		\
+	regmap_reg_range(ISL7998x_REG_Px_DEC_CLMD(page),		\
+			 ISL7998x_REG_Px_DEC_DATA_CONV(page)),		\
+	regmap_reg_range(ISL7998x_REG_Px_DEC_INTERNAL_TEST(page),	\
+			 ISL7998x_REG_Px_DEC_INTERNAL_TEST(page)),	\
+	regmap_reg_range(ISL7998x_REG_Px_DEC_H_DELAY_CTL(page),		\
+			 ISL7998x_REG_Px_DEC_H_DELAY_II_LOW(page)),	\
+	/* ACA range */							\
+	regmap_reg_range(ISL7998x_REG_Px_ACA_CTL_1(page),		\
+			 ISL7998x_REG_Px_ACA_HIST_WIN_V_SZ2(page)),	\
+	regmap_reg_range(ISL7998x_REG_Px_ACA_CTL_2(page),		\
+			 ISL7998x_REG_Px_ACA_CTL_4(page)),		\
+	regmap_reg_range(ISL7998x_REG_Px_ACA_FLEX_WIN_HIST(page),	\
+			 ISL7998x_REG_Px_ACA_HIST_DATA_LO(page)),	\
+	regmap_reg_range(ISL7998x_REG_Px_ACA_XFER_HIST_HOST(page),	\
+			 ISL7998x_REG_Px_ACA_XFER_HIST_HOST(page)),	\
+	regmap_reg_range(ISL7998x_REG_Px_DEC_PAGE(page),		\
+			 ISL7998x_REG_Px_DEC_PAGE(page))
+
+#define ISL7998x_REG_DECODER_ACA_VOLATILE_RANGE(page)			\
+	/* Decoder range */						\
+	regmap_reg_range(ISL7998x_REG_Px_DEC_STATUS_1(page),		\
+			 ISL7998x_REG_Px_DEC_STATUS_1(page)),		\
+	regmap_reg_range(ISL7998x_REG_Px_DEC_SDT(page),			\
+			 ISL7998x_REG_Px_DEC_SDT(page)),		\
+	regmap_reg_range(ISL7998x_REG_Px_DEC_MVSN(page),		\
+			 ISL7998x_REG_Px_DEC_HFREF(page)),		\
+	/* ACA range */							\
+	regmap_reg_range(ISL7998x_REG_Px_ACA_Y_AVG(page),		\
+			 ISL7998x_REG_Px_ACA_Y_HIGH(page)),		\
+	regmap_reg_range(ISL7998x_REG_Px_ACA_HIST_DATA_LO(page),	\
+			 ISL7998x_REG_Px_ACA_FLEX_WIN_CR_CLR(page))
+
+static const struct regmap_range isl7998x_readable_ranges[] = {
+	regmap_reg_range(ISL7998x_REG_P0_PRODUCT_ID_CODE,
+			 ISL7998x_REG_P0_IRQ_SYNC_CTL),
+	regmap_reg_range(ISL7998x_REG_P0_INTERRUPT_STATUS,
+			 ISL7998x_REG_P0_CLOCK_DELAY),
+	regmap_reg_range(ISL7998x_REG_Px_DEC_PAGE(0),
+			 ISL7998x_REG_Px_DEC_PAGE(0)),
+
+	ISL7998x_REG_DECODER_ACA_READABLE_RANGE(1),
+	ISL7998x_REG_DECODER_ACA_READABLE_RANGE(2),
+	ISL7998x_REG_DECODER_ACA_READABLE_RANGE(3),
+	ISL7998x_REG_DECODER_ACA_READABLE_RANGE(4),
+
+	regmap_reg_range(ISL7998x_REG_P5_LI_ENGINE_CTL,
+			 ISL7998x_REG_P5_MIPI_SP_HS_TRL_CTL),
+	regmap_reg_range(ISL7998x_REG_P5_FIFO_THRSH_CNT_1,
+			 ISL7998x_REG_P5_PLL_ANA),
+	regmap_reg_range(ISL7998x_REG_P5_TOTAL_PF_LINE_CNT_1,
+			 ISL7998x_REG_P5_HIST_LINE_CNT_2),
+	regmap_reg_range(ISL7998x_REG_Px_DEC_PAGE(5),
+			 ISL7998x_REG_Px_DEC_PAGE(5)),
+};
+
+static const struct regmap_range isl7998x_writeable_ranges[] = {
+	regmap_reg_range(ISL7998x_REG_P0_SW_RESET_CTL,
+			 ISL7998x_REG_P0_IRQ_SYNC_CTL),
+	regmap_reg_range(ISL7998x_REG_P0_CHAN_1_IRQ,
+			 ISL7998x_REG_P0_SHORT_DIAG_IRQ_EN),
+	regmap_reg_range(ISL7998x_REG_P0_CLOCK_DELAY,
+			 ISL7998x_REG_P0_CLOCK_DELAY),
+	regmap_reg_range(ISL7998x_REG_Px_DEC_PAGE(0),
+			 ISL7998x_REG_Px_DEC_PAGE(0)),
+
+	ISL7998x_REG_DECODER_ACA_WRITEABLE_RANGE(1),
+	ISL7998x_REG_DECODER_ACA_WRITEABLE_RANGE(2),
+	ISL7998x_REG_DECODER_ACA_WRITEABLE_RANGE(3),
+	ISL7998x_REG_DECODER_ACA_WRITEABLE_RANGE(4),
+
+	regmap_reg_range(ISL7998x_REG_P5_LI_ENGINE_CTL,
+			 ISL7998x_REG_P5_ESC_MODE_TIME_CTL),
+	regmap_reg_range(ISL7998x_REG_P5_MIPI_SP_HS_TRL_CTL,
+			 ISL7998x_REG_P5_PLL_ANA),
+	regmap_reg_range(ISL7998x_REG_P5_TOTAL_PF_LINE_CNT_1,
+			 ISL7998x_REG_P5_HIST_LINE_CNT_2),
+	regmap_reg_range(ISL7998x_REG_Px_DEC_PAGE(5),
+			 ISL7998x_REG_Px_DEC_PAGE(5)),
+
+	ISL7998x_REG_DECODER_ACA_WRITEABLE_RANGE(0xf),
+};
+
+static const struct regmap_range isl7998x_volatile_ranges[] = {
+	/* Product id code register is used to check availability */
+	regmap_reg_range(ISL7998x_REG_P0_PRODUCT_ID_CODE,
+			 ISL7998x_REG_P0_PRODUCT_ID_CODE),
+	regmap_reg_range(ISL7998x_REG_P0_MPP1_SYNC_CTL,
+			 ISL7998x_REG_P0_IRQ_SYNC_CTL),
+	regmap_reg_range(ISL7998x_REG_P0_INTERRUPT_STATUS,
+			 ISL7998x_REG_P0_INTERRUPT_STATUS),
+	regmap_reg_range(ISL7998x_REG_P0_CHAN_1_STATUS,
+			 ISL7998x_REG_P0_SHORT_DIAG_STATUS),
+
+	ISL7998x_REG_DECODER_ACA_VOLATILE_RANGE(1),
+	ISL7998x_REG_DECODER_ACA_VOLATILE_RANGE(2),
+	ISL7998x_REG_DECODER_ACA_VOLATILE_RANGE(3),
+	ISL7998x_REG_DECODER_ACA_VOLATILE_RANGE(4),
+
+	regmap_reg_range(ISL7998x_REG_P5_AUTO_TEST_ERR_DET,
+			 ISL7998x_REG_P5_PIC_HEIGHT_LOW),
+};
+
+static const struct regmap_access_table isl7998x_readable_table = {
+	.yes_ranges = isl7998x_readable_ranges,
+	.n_yes_ranges = ARRAY_SIZE(isl7998x_readable_ranges),
+};
+
+static const struct regmap_access_table isl7998x_writeable_table = {
+	.yes_ranges = isl7998x_writeable_ranges,
+	.n_yes_ranges = ARRAY_SIZE(isl7998x_writeable_ranges),
+};
+
+static const struct regmap_access_table isl7998x_volatile_table = {
+	.yes_ranges = isl7998x_volatile_ranges,
+	.n_yes_ranges = ARRAY_SIZE(isl7998x_volatile_ranges),
+};
+
+static const struct regmap_range_cfg isl7998x_ranges[] = {
+	{
+		.range_min	= ISL7998x_REG_Pn_BASE(0),
+		.range_max	= ISL7998x_REG_Px_ACA_XFER_HIST_HOST(0xf),
+		.selector_reg	= ISL7998x_REG_Px_DEC_PAGE(0),
+		.selector_mask	= ISL7998x_REG_Px_DEC_PAGE_MASK,
+		.window_start	= 0,
+		.window_len	= 256,
+	}
+};
+
+static const struct regmap_config isl7998x_regmap = {
+	.reg_bits	= 8,
+	.val_bits	= 8,
+	.max_register	= ISL7998x_REG_Px_ACA_XFER_HIST_HOST(0xf),
+	.ranges		= isl7998x_ranges,
+	.num_ranges	= ARRAY_SIZE(isl7998x_ranges),
+	.rd_table	= &isl7998x_readable_table,
+	.wr_table	= &isl7998x_writeable_table,
+	.volatile_table	= &isl7998x_volatile_table,
+	.cache_type	= REGCACHE_RBTREE,
+};
+
+static int isl7998x_mc_init(struct isl7998x *isl7998x)
+{
+	unsigned int i;
+
+	isl7998x->subdev.entity.ops = &isl7998x_entity_ops;
+	isl7998x->subdev.entity.function = MEDIA_ENT_F_VID_IF_BRIDGE;
+
+	isl7998x->pads[ISL7998x_PAD_OUT].flags = MEDIA_PAD_FL_SOURCE;
+	for (i = ISL7998x_PAD_VIN1; i < ISL7998x_NUM_PADS; i++)
+		isl7998x->pads[i].flags = MEDIA_PAD_FL_SINK;
+
+	return media_entity_pads_init(&isl7998x->subdev.entity,
+				      ISL7998x_NUM_PADS,
+				      isl7998x->pads);
+}
+
+static int get_link_freq_menu_index(unsigned int lanes,
+				    unsigned int inputs)
+{
+	int ret = -EINVAL;
+
+	switch (lanes) {
+	case 1:
+		if (inputs == 1)
+			ret = 0;
+		if (inputs == 2)
+			ret = 1;
+		if (inputs == 4)
+			ret = 2;
+		break;
+	case 2:
+		if (inputs == 2)
+			ret = 0;
+		if (inputs == 4)
+			ret = 1;
+		break;
+	default:
+		break;
+	}
+
+	return ret;
+}
+
+static int isl7998x_init_controls(struct isl7998x *isl7998x)
+{
+	struct v4l2_subdev *sd = &isl7998x->subdev;
+	int link_freq_index;
+	unsigned int i;
+	int ret;
+
+	ret = v4l2_ctrl_handler_init(&isl7998x->ctrl_handler,
+				     2 + ARRAY_SIZE(isl7998x_ctrls));
+	if (ret)
+		return ret;
+
+	mutex_init(&isl7998x->ctrl_mutex);
+	isl7998x->ctrl_handler.lock = &isl7998x->ctrl_mutex;
+	link_freq_index = get_link_freq_menu_index(isl7998x->nr_mipi_lanes,
+						   isl7998x->nr_inputs);
+	if (link_freq_index < 0 ||
+	    link_freq_index >= ARRAY_SIZE(link_freq_menu_items)) {
+		dev_err(sd->dev,
+			"failed to find MIPI link freq: %d lanes, %d inputs\n",
+			isl7998x->nr_mipi_lanes, isl7998x->nr_inputs);
+		ret = -EINVAL;
+		goto err;
+	}
+
+	isl7998x->link_freq = v4l2_ctrl_new_int_menu(&isl7998x->ctrl_handler,
+						     &isl7998x_ctrl_ops,
+						     V4L2_CID_LINK_FREQ,
+						     ARRAY_SIZE(link_freq_menu_items) - 1,
+						     link_freq_index,
+						     link_freq_menu_items);
+	if (isl7998x->link_freq)
+		isl7998x->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+
+	for (i = 0; i < ARRAY_SIZE(isl7998x_ctrls); i++)
+		v4l2_ctrl_new_custom(&isl7998x->ctrl_handler,
+				     &isl7998x_ctrls[i], NULL);
+
+	v4l2_ctrl_new_std_menu_items(&isl7998x->ctrl_handler,
+				     &isl7998x_ctrl_ops,
+				     V4L2_CID_TEST_PATTERN,
+				     ARRAY_SIZE(isl7998x_test_pattern_menu) - 1,
+				     0, 0, isl7998x_test_pattern_menu);
+
+	ret = isl7998x->ctrl_handler.error;
+	if (ret)
+		goto err;
+
+	isl7998x->subdev.ctrl_handler = &isl7998x->ctrl_handler;
+	v4l2_ctrl_handler_setup(&isl7998x->ctrl_handler);
+
+	return 0;
+
+err:
+	mutex_destroy(&isl7998x->ctrl_mutex);
+
+	return ret;
+}
+
+static void isl7998x_remove_controls(struct isl7998x *isl7998x)
+{
+	v4l2_ctrl_handler_free(isl7998x->subdev.ctrl_handler);
+	mutex_destroy(&isl7998x->ctrl_mutex);
+}
+
+static int isl7998x_probe(struct i2c_client *client)
+{
+	struct device *dev = &client->dev;
+	struct v4l2_fwnode_endpoint endpoint = {
+		.bus_type = V4L2_MBUS_CSI2_DPHY,
+	};
+	struct fwnode_handle *ep;
+	struct isl7998x *isl7998x;
+	struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
+	int nr_inputs;
+	int ret;
+
+	ret = i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA);
+	if (!ret) {
+		dev_warn(&adapter->dev,
+			 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
+		return -EIO;
+	}
+
+	isl7998x = devm_kzalloc(dev, sizeof(*isl7998x), GFP_KERNEL);
+	if (!isl7998x)
+		return -ENOMEM;
+
+	isl7998x->pd_gpio = devm_gpiod_get_optional(dev, "powerdown",
+						    GPIOD_OUT_HIGH);
+	if (IS_ERR(isl7998x->pd_gpio))
+		return dev_err_probe(dev, PTR_ERR(isl7998x->pd_gpio),
+				     "Failed to retrieve/request PD GPIO\n");
+
+	isl7998x->rstb_gpio = devm_gpiod_get_optional(dev, "reset",
+						      GPIOD_OUT_HIGH);
+	if (IS_ERR(isl7998x->rstb_gpio))
+		return dev_err_probe(dev, PTR_ERR(isl7998x->rstb_gpio),
+				     "Failed to retrieve/request RSTB GPIO\n");
+
+	isl7998x->regmap = devm_regmap_init_i2c(client, &isl7998x_regmap);
+	if (IS_ERR(isl7998x->regmap))
+		return dev_err_probe(dev, PTR_ERR(isl7998x->regmap),
+				     "Failed to allocate register map\n");
+
+	ep = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev),
+					     ISL7998x_PAD_OUT, 0, 0);
+	if (!ep)
+		return dev_err_probe(dev, -EINVAL, "Missing endpoint node\n");
+
+	ret = v4l2_fwnode_endpoint_parse(ep, &endpoint);
+	fwnode_handle_put(ep);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to parse endpoint\n");
+
+	if (endpoint.bus.mipi_csi2.num_data_lanes == 0 ||
+	    endpoint.bus.mipi_csi2.num_data_lanes > 2)
+		return dev_err_probe(dev, -EINVAL,
+				     "Invalid number of MIPI lanes\n");
+
+	isl7998x->nr_mipi_lanes = endpoint.bus.mipi_csi2.num_data_lanes;
+
+	nr_inputs = isl7998x_get_nr_inputs(dev->of_node);
+	if (nr_inputs < 0)
+		return dev_err_probe(dev, nr_inputs,
+				     "Invalid number of input ports\n");
+	isl7998x->nr_inputs = nr_inputs;
+
+	v4l2_i2c_subdev_init(&isl7998x->subdev, client, &isl7998x_subdev_ops);
+	isl7998x->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+
+	ret = isl7998x_mc_init(isl7998x);
+	if (ret < 0)
+		return ret;
+
+	isl7998x->fmt = &isl7998x_colour_fmts[0];
+	isl7998x->norm = V4L2_STD_NTSC;
+	isl7998x->enabled = 0;
+
+	ret = isl7998x_init_controls(isl7998x);
+	if (ret)
+		goto err_entity_cleanup;
+
+	ret = v4l2_async_register_subdev(&isl7998x->subdev);
+	if (ret < 0)
+		goto err_controls_cleanup;
+
+	pm_runtime_enable(dev);
+
+	return 0;
+
+err_controls_cleanup:
+	isl7998x_remove_controls(isl7998x);
+err_entity_cleanup:
+	media_entity_cleanup(&isl7998x->subdev.entity);
+
+	return ret;
+}
+
+static int isl7998x_remove(struct i2c_client *client)
+{
+	struct isl7998x *isl7998x = i2c_to_isl7998x(client);
+
+	pm_runtime_disable(&client->dev);
+	v4l2_async_unregister_subdev(&isl7998x->subdev);
+	isl7998x_remove_controls(isl7998x);
+	media_entity_cleanup(&isl7998x->subdev.entity);
+
+	return 0;
+}
+
+static const struct of_device_id isl7998x_of_match[] = {
+	{ .compatible = "isil,isl79987", },
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, isl7998x_of_match);
+
+static const struct i2c_device_id isl7998x_id[] = {
+	{ "isl79987", 0 },
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(i2c, isl7998x_id);
+
+static int __maybe_unused isl7998x_runtime_resume(struct device *dev)
+{
+	struct v4l2_subdev *sd = dev_get_drvdata(dev);
+	struct isl7998x *isl7998x = sd_to_isl7998x(sd);
+	int ret;
+
+	gpiod_set_value(isl7998x->rstb_gpio, 1);
+	gpiod_set_value(isl7998x->pd_gpio, 0);
+	gpiod_set_value(isl7998x->rstb_gpio, 0);
+
+	ret = isl7998x_wait_power_on(isl7998x);
+	if (ret)
+		goto err;
+
+	ret = isl7998x_init(isl7998x);
+	if (ret)
+		goto err;
+
+	return 0;
+
+err:
+	gpiod_set_value(isl7998x->pd_gpio, 1);
+
+	return ret;
+}
+
+static int __maybe_unused isl7998x_runtime_suspend(struct device *dev)
+{
+	struct v4l2_subdev *sd = dev_get_drvdata(dev);
+	struct isl7998x *isl7998x = sd_to_isl7998x(sd);
+
+	gpiod_set_value(isl7998x->pd_gpio, 1);
+
+	return 0;
+}
+
+static const struct dev_pm_ops isl7998x_pm_ops = {
+	SET_RUNTIME_PM_OPS(isl7998x_runtime_suspend,
+			   isl7998x_runtime_resume,
+			   NULL)
+};
+
+static struct i2c_driver isl7998x_i2c_driver = {
+	.driver = {
+		.name = "isl7998x",
+		.of_match_table = of_match_ptr(isl7998x_of_match),
+		.pm = &isl7998x_pm_ops,
+	},
+	.probe_new	= isl7998x_probe,
+	.remove		= isl7998x_remove,
+	.id_table	= isl7998x_id,
+};
+
+module_i2c_driver(isl7998x_i2c_driver);
+
+MODULE_DESCRIPTION("Intersil ISL7998x Analog to MIPI CSI-2/BT656 decoder");
+MODULE_AUTHOR("Marek Vasut <marex@denx.de>");
+MODULE_LICENSE("GPL v2");
diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
index c9eea93a43a9..06700ff3c6da 100644
--- a/include/uapi/linux/v4l2-controls.h
+++ b/include/uapi/linux/v4l2-controls.h
@@ -219,6 +219,12 @@ enum v4l2_colorfx {
  */
 #define V4L2_CID_USER_ALLEGRO_BASE		(V4L2_CID_USER_BASE + 0x1170)
 
+/*
+ * The base for the isl7998x driver controls.
+ * We reserve 16 controls for this driver.
+ */
+#define V4L2_CID_USER_ISL7998X_BASE		(V4L2_CID_USER_BASE + 0x1180)
+
 /* MPEG-class control IDs */
 /* The MPEG controls are applicable to all codec controls
  * and the 'MPEG' part of the define is historical */
-- 
2.30.2