[PATCH v5 0/2] Add RZ/G2UL ADC support

[PATCH v5 0/2] Add RZ/G2UL ADC support

[Biju Das]

This patch series document ADC found on RZ/G2UL SoC and also removes
unnecessary channel check from rzg2l_adc_read_label().

v4->v5:
 * Removed redundant "type:object"
 * Added Rb tag from Krzysztof Kozlowski
v3->v4:
 * Removed unnecessary SoC specific reg description as it is
   equivalent to the logic used in reg.
 * Removed Items from reg.
v2->v3:
 * Added generic description for reg.
 * Improved schema validation by restricting both channel and reg to [0-1].
 * Added Rb tag from Geert.
v1->v2:
 * Started using generic compatible for RZ/G2UL and added SoC specific validation
   for number of supported channels.

Biju Das (2):
  dt-bindings: iio: adc: Document Renesas RZ/G2UL ADC
  iio: adc: rzg2l_adc: Remove unnecessary channel check from
    rzg2l_adc_read_label()

 .../bindings/iio/adc/renesas,rzg2l-adc.yaml   | 28 ++++++++++++++++---
 drivers/iio/adc/rzg2l_adc.c                   |  3 --
 2 files changed, 24 insertions(+), 7 deletions(-)

-- 
2.25.1

[PATCH v5 1/2] dt-bindings: iio: adc: Document Renesas RZ/G2UL ADC

[Biju Das]

Document Renesas RZ/G2UL ADC bindings. RZ/G2UL ADC is almost identical
to RZ/G2L, but it has 2 analog input channels compared to 8 channels
on the RZ/G2L.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
v4->v5:
 * Removed redundant "type:object"
 * Added Rb tag from Krzysztof Kozlowski
v3->v4:
 * Removed unnecessary SoC specific reg description as it is
   equivalent to the logic used in reg.
 * Removed Items from reg.
v2->v3:
 * Added generic description for reg.
 * Improved schema validation by restricting both channel and reg to [0-1].
v1->v2:
 * Started using generic compatible for RZ/G2UL and added SoC specific validation
   for channels.
---
 .../bindings/iio/adc/renesas,rzg2l-adc.yaml   | 28 ++++++++++++++++---
 1 file changed, 24 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.yaml b/Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.yaml
index d66c24cae1e1..61c6157cf5a9 100644
--- a/Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.yaml
@@ -19,6 +19,7 @@ properties:
   compatible:
     items:
       - enum:
+          - renesas,r9a07g043-adc   # RZ/G2UL
           - renesas,r9a07g044-adc   # RZ/G2L
           - renesas,r9a07g054-adc   # RZ/V2L
       - const: renesas,rzg2l-adc
@@ -76,16 +77,35 @@ patternProperties:
     properties:
       reg:
         description: |
-          The channel number. It can have up to 8 channels numbered from 0 to 7.
-        items:
-          - minimum: 0
-            maximum: 7
+          The channel number.
 
     required:
       - reg
 
     additionalProperties: false
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: renesas,r9a07g043-adc
+    then:
+      patternProperties:
+        "^channel@[2-7]$": false
+        "^channel@[0-1]$":
+          properties:
+            reg:
+              minimum: 0
+              maximum: 1
+    else:
+      patternProperties:
+        "^channel@[0-7]$":
+          properties:
+            reg:
+              minimum: 0
+              maximum: 7
+
 additionalProperties: false
 
 examples:
-- 
2.25.1

[PATCH v5 2/2] iio: adc: rzg2l_adc: Remove unnecessary channel check from rzg2l_adc_read_label()

[Biju Das]

Remove unnecessary channel check from rzg2l_adc_read_label(), as the
channel error handling is already done in probe(). Therefore no need to
validate at runtime.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
v4->v5:
 * No Change.
v3->v4:
 * No Change.
v2->v3:
 * Added Rb tag from Geert.
v2:
 * New patch
---
 drivers/iio/adc/rzg2l_adc.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/iio/adc/rzg2l_adc.c b/drivers/iio/adc/rzg2l_adc.c
index 7585144b9715..bee5f9861acb 100644
--- a/drivers/iio/adc/rzg2l_adc.c
+++ b/drivers/iio/adc/rzg2l_adc.c
@@ -260,9 +260,6 @@ static int rzg2l_adc_read_label(struct iio_dev *iio_dev,
 				const struct iio_chan_spec *chan,
 				char *label)
 {
-	if (chan->channel >= RZG2L_ADC_MAX_CHANNELS)
-		return -EINVAL;
-
 	return sysfs_emit(label, "%s\n", rzg2l_adc_channel_name[chan->channel]);
 }
 
-- 
2.25.1

Re: [PATCH v5 0/2] Add RZ/G2UL ADC support

[Jonathan Cameron]

On Sun, 15 May 2022 07:03:34 +0100
Biju Das <biju.das.jz@bp.renesas.com> wrote:

> This patch series document ADC found on RZ/G2UL SoC and also removes
> unnecessary channel check from rzg2l_adc_read_label().
> 
> v4->v5:
>  * Removed redundant "type:object"
>  * Added Rb tag from Krzysztof Kozlowski
> v3->v4:
>  * Removed unnecessary SoC specific reg description as it is
>    equivalent to the logic used in reg.
>  * Removed Items from reg.
> v2->v3:
>  * Added generic description for reg.
>  * Improved schema validation by restricting both channel and reg to [0-1].
>  * Added Rb tag from Geert.
> v1->v2:
>  * Started using generic compatible for RZ/G2UL and added SoC specific validation
>    for number of supported channels.
> 
> Biju Das (2):
>   dt-bindings: iio: adc: Document Renesas RZ/G2UL ADC
>   iio: adc: rzg2l_adc: Remove unnecessary channel check from
>     rzg2l_adc_read_label()
> 
>  .../bindings/iio/adc/renesas,rzg2l-adc.yaml   | 28 ++++++++++++++++---
>  drivers/iio/adc/rzg2l_adc.c                   |  3 --
>  2 files changed, 24 insertions(+), 7 deletions(-)
> 

Series applied to the togreg branch of iio.git and pushed out as testing
for 0-day to see if we missed anything.

Thanks,

Jonathan

Re: [PATCH v5 1/2] dt-bindings: iio: adc: Document Renesas RZ/G2UL ADC

[Rob Herring]

On Sun, 15 May 2022 07:03:35 +0100, Biju Das wrote:
> Document Renesas RZ/G2UL ADC bindings. RZ/G2UL ADC is almost identical
> to RZ/G2L, but it has 2 analog input channels compared to 8 channels
> on the RZ/G2L.
> 
> Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> ---
> v4->v5:
>  * Removed redundant "type:object"
>  * Added Rb tag from Krzysztof Kozlowski
> v3->v4:
>  * Removed unnecessary SoC specific reg description as it is
>    equivalent to the logic used in reg.
>  * Removed Items from reg.
> v2->v3:
>  * Added generic description for reg.
>  * Improved schema validation by restricting both channel and reg to [0-1].
> v1->v2:
>  * Started using generic compatible for RZ/G2UL and added SoC specific validation
>    for channels.
> ---
>  .../bindings/iio/adc/renesas,rzg2l-adc.yaml   | 28 ++++++++++++++++---
>  1 file changed, 24 insertions(+), 4 deletions(-)
> 

Acked-by: Rob Herring <robh@kernel.org>