[PATCH v3 0/5] Add a VCNL4040 light and proximity driver

[PATCH v3 0/5] Add a VCNL4040 light and proximity driver

[Angus Ainslie (Purism)]

Extend the Vishay VCNL4000/4010/4020/4200 driver to work with the VCNL4040
chip.

Changes since V2:
    Added Tested-by tag.
    Changed 0x00 to 0 for clarity.

Changes since V1:
    Separated byte vs word bug fix.
    Separated device tree hooks.
    Separated devicetree binding patches.

Angus Ainslie (Purism) (5):
  iio: light: vcnl4000 use word writes instead of byte writes
  iio: light: vcnl4000 add devicetree hooks
  dt-bindings: iio: light: add vcnl4000 devicetree bindings
  iio: light: vcnl4000 add support for the VCNL4040 proximity and light
    sensor
  dt-bindings: iio: light: add vcnl4040 devicetree bindings

 .../bindings/iio/light/vcnl4000.txt           | 24 ++++++
 drivers/iio/light/vcnl4000.c                  | 77 ++++++++++++++++---
 2 files changed, 91 insertions(+), 10 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/iio/light/vcnl4000.txt

-- 
2.17.1

[PATCH v3 1/5] iio: light: vcnl4000 use word writes instead of byte writes

[Angus Ainslie (Purism)]

The VCNL4200 datasheet says that word read and writes should be used
to access the registers.

Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>
Tested-by: Tomas Novotny <tomas@novotny.cz>
---
 drivers/iio/light/vcnl4000.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/light/vcnl4000.c b/drivers/iio/light/vcnl4000.c
index 04fd0d4b6f19..5e0a8eb83ebc 100644
--- a/drivers/iio/light/vcnl4000.c
+++ b/drivers/iio/light/vcnl4000.c
@@ -140,10 +140,10 @@ static int vcnl4200_init(struct vcnl4000_data *data)
 	data->rev = (ret >> 8) & 0xf;
 
 	/* Set defaults and enable both channels */
-	ret = i2c_smbus_write_byte_data(data->client, VCNL4200_AL_CONF, 0x00);
+	ret = i2c_smbus_write_word_data(data->client, VCNL4200_AL_CONF, 0);
 	if (ret < 0)
 		return ret;
-	ret = i2c_smbus_write_byte_data(data->client, VCNL4200_PS_CONF1, 0x00);
+	ret = i2c_smbus_write_word_data(data->client, VCNL4200_PS_CONF1, 0);
 	if (ret < 0)
 		return ret;
 
-- 
2.17.1

Re: [PATCH v3 1/5] iio: light: vcnl4000 use word writes instead of byte writes

[Jonathan Cameron]

On Thu, 21 Mar 2019 08:40:43 -0700
"Angus Ainslie (Purism)" <angus@akkea.ca> wrote:

> The VCNL4200 datasheet says that word read and writes should be used
> to access the registers.
> 
> Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>
> Tested-by: Tomas Novotny <tomas@novotny.cz>

So we did discuss if this was a fix for any of the existing devices.
Not sure we reached a conclusion as clearly the worked for Tomas without
this.  Anyhow, for now applied to the togreg branch of iio.git and pushed
out as testing for the autobuilders to play with it.

Thanks,

Jonathan

> ---
>  drivers/iio/light/vcnl4000.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/iio/light/vcnl4000.c b/drivers/iio/light/vcnl4000.c
> index 04fd0d4b6f19..5e0a8eb83ebc 100644
> --- a/drivers/iio/light/vcnl4000.c
> +++ b/drivers/iio/light/vcnl4000.c
> @@ -140,10 +140,10 @@ static int vcnl4200_init(struct vcnl4000_data *data)
>  	data->rev = (ret >> 8) & 0xf;
>  
>  	/* Set defaults and enable both channels */
> -	ret = i2c_smbus_write_byte_data(data->client, VCNL4200_AL_CONF, 0x00);
> +	ret = i2c_smbus_write_word_data(data->client, VCNL4200_AL_CONF, 0);
>  	if (ret < 0)
>  		return ret;
> -	ret = i2c_smbus_write_byte_data(data->client, VCNL4200_PS_CONF1, 0x00);
> +	ret = i2c_smbus_write_word_data(data->client, VCNL4200_PS_CONF1, 0);
>  	if (ret < 0)
>  		return ret;
>  

[PATCH v3 2/5] iio: light: vcnl4000 add devicetree hooks

[Angus Ainslie (Purism)]

Add an of_match table for devicetree probing.

Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>
---
 drivers/iio/light/vcnl4000.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/drivers/iio/light/vcnl4000.c b/drivers/iio/light/vcnl4000.c
index 5e0a8eb83ebc..308cb2d2b641 100644
--- a/drivers/iio/light/vcnl4000.c
+++ b/drivers/iio/light/vcnl4000.c
@@ -363,9 +363,31 @@ static int vcnl4000_probe(struct i2c_client *client,
 	return devm_iio_device_register(&client->dev, indio_dev);
 }
 
+static const struct of_device_id vcnl_4000_of_match[] = {
+	{
+		.compatible = "vishay,vcnl4000",
+		.data = "VCNL4000",
+	},
+	{
+		.compatible = "vishay,vcnl4010",
+		.data = "VCNL4010",
+	},
+	{
+		.compatible = "vishay,vcnl4010",
+		.data = "VCNL4020",
+	},
+	{
+		.compatible = "vishay,vcnl4200",
+		.data = "VCNL4200",
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, vcnl4000_of_match);
+
 static struct i2c_driver vcnl4000_driver = {
 	.driver = {
 		.name   = VCNL4000_DRV_NAME,
+		.of_match_table = of_match_ptr(vcnl_4000_of_match),
 	},
 	.probe  = vcnl4000_probe,
 	.id_table = vcnl4000_id,
-- 
2.17.1

Re: [PATCH v3 2/5] iio: light: vcnl4000 add devicetree hooks

[Jonathan Cameron]

On Thu, 21 Mar 2019 08:40:44 -0700
"Angus Ainslie (Purism)" <angus@akkea.ca> wrote:

> Add an of_match table for devicetree probing.
> 
> Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>

I made a small tweak (see inline) for an issue I'd missed
previously (which is pretty obscure!)

Jonathan
> ---
>  drivers/iio/light/vcnl4000.c | 22 ++++++++++++++++++++++
>  1 file changed, 22 insertions(+)
> 
> diff --git a/drivers/iio/light/vcnl4000.c b/drivers/iio/light/vcnl4000.c
> index 5e0a8eb83ebc..308cb2d2b641 100644
> --- a/drivers/iio/light/vcnl4000.c
> +++ b/drivers/iio/light/vcnl4000.c
> @@ -363,9 +363,31 @@ static int vcnl4000_probe(struct i2c_client *client,
>  	return devm_iio_device_register(&client->dev, indio_dev);
>  }
>  
> +static const struct of_device_id vcnl_4000_of_match[] = {
> +	{
> +		.compatible = "vishay,vcnl4000",
> +		.data = "VCNL4000",
> +	},
> +	{
> +		.compatible = "vishay,vcnl4010",
> +		.data = "VCNL4010",
> +	},
> +	{
> +		.compatible = "vishay,vcnl4010",
> +		.data = "VCNL4020",
> +	},
> +	{
> +		.compatible = "vishay,vcnl4200",
> +		.data = "VCNL4200",
> +	},
> +	{},
> +};
> +MODULE_DEVICE_TABLE(of, vcnl4000_of_match);
> +
>  static struct i2c_driver vcnl4000_driver = {
>  	.driver = {
>  		.name   = VCNL4000_DRV_NAME,
> +		.of_match_table = of_match_ptr(vcnl_4000_of_match),
Ah. I'd missed this previously.  Don't use the of_match_ptr
magic anymore. It prevents ACPI probing via the weird
DSDT entry that basically says "here be devicetree".
>  	},
>  	.probe  = vcnl4000_probe,
>  	.id_table = vcnl4000_id,

Re: [PATCH v3 2/5] iio: light: vcnl4000 add devicetree hooks

[Jonathan Cameron]

On Sun, 24 Mar 2019 17:19:30 +0000
Jonathan Cameron <jic23@kernel.org> wrote:

> On Thu, 21 Mar 2019 08:40:44 -0700
> "Angus Ainslie (Purism)" <angus@akkea.ca> wrote:
> 
> > Add an of_match table for devicetree probing.
> > 
> > Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>  
> 
> I made a small tweak (see inline) for an issue I'd missed
> previously (which is pretty obscure!)
> 
> Jonathan
> > ---
> >  drivers/iio/light/vcnl4000.c | 22 ++++++++++++++++++++++
> >  1 file changed, 22 insertions(+)
> > 
> > diff --git a/drivers/iio/light/vcnl4000.c b/drivers/iio/light/vcnl4000.c
> > index 5e0a8eb83ebc..308cb2d2b641 100644
> > --- a/drivers/iio/light/vcnl4000.c
> > +++ b/drivers/iio/light/vcnl4000.c
> > @@ -363,9 +363,31 @@ static int vcnl4000_probe(struct i2c_client *client,
> >  	return devm_iio_device_register(&client->dev, indio_dev);
> >  }
> >  
> > +static const struct of_device_id vcnl_4000_of_match[] = {
> > +	{
> > +		.compatible = "vishay,vcnl4000",
> > +		.data = "VCNL4000",
> > +	},
> > +	{
> > +		.compatible = "vishay,vcnl4010",
> > +		.data = "VCNL4010",
> > +	},
> > +	{
> > +		.compatible = "vishay,vcnl4010",
> > +		.data = "VCNL4020",
> > +	},
> > +	{
> > +		.compatible = "vishay,vcnl4200",
> > +		.data = "VCNL4200",
> > +	},
> > +	{},
> > +};
> > +MODULE_DEVICE_TABLE(of, vcnl4000_of_match);
vcnl_4000_of_match.

Fixed up.
> > +
> >  static struct i2c_driver vcnl4000_driver = {
> >  	.driver = {
> >  		.name   = VCNL4000_DRV_NAME,
> > +		.of_match_table = of_match_ptr(vcnl_4000_of_match),  
> Ah. I'd missed this previously.  Don't use the of_match_ptr
> magic anymore. It prevents ACPI probing via the weird
> DSDT entry that basically says "here be devicetree".
> >  	},
> >  	.probe  = vcnl4000_probe,
> >  	.id_table = vcnl4000_id,  
> 

[PATCH v3 3/5] dt-bindings: iio: light: add vcnl4000 devicetree bindings

[Angus Ainslie (Purism)]

Document the vishay VCNL4000 devicetree bindings.

Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>
---
 .../bindings/iio/light/vcnl4000.txt           | 22 +++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/light/vcnl4000.txt

diff --git a/Documentation/devicetree/bindings/iio/light/vcnl4000.txt b/Documentation/devicetree/bindings/iio/light/vcnl4000.txt
new file mode 100644
index 000000000000..4a9d558a412a
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/light/vcnl4000.txt
@@ -0,0 +1,22 @@
+VISHAY VCNL4000 -  Ambient Light and proximity sensor
+
+This driver supports the VCNL4000/10/20 and VCNL4200 chips
+
+Required properties:
+
+	-compatible: must be one of :
+        vishay,vcnl4000
+        vishay,vcnl4010
+        vishay,vcnl4020
+        vishay,vcnl4200
+
+	-reg: I2C address of the sensor, should be one from below based on the model:
+        0x13
+        0x51
+
+Example:
+
+light-sensor@51 {
+	compatible = "vishay,vcnl4200";
+	reg = <0x51>;
+};
-- 
2.17.1

Re: [PATCH v3 3/5] dt-bindings: iio: light: add vcnl4000 devicetree bindings

[Jonathan Cameron]

On Thu, 21 Mar 2019 08:40:45 -0700
"Angus Ainslie (Purism)" <angus@akkea.ca> wrote:

> Document the vishay VCNL4000 devicetree bindings.
> 
> Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>
Fairly straight forward, so I'll take this without explicitly waiting
for a dt ack.  Still plenty of time to add one if Rob or anyone else
does want to take a look.

Applied to the togreg branch of iio.git and pushed out as testing

Thanks,

Jonathan

> ---
>  .../bindings/iio/light/vcnl4000.txt           | 22 +++++++++++++++++++
>  1 file changed, 22 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/light/vcnl4000.txt
> 
> diff --git a/Documentation/devicetree/bindings/iio/light/vcnl4000.txt b/Documentation/devicetree/bindings/iio/light/vcnl4000.txt
> new file mode 100644
> index 000000000000..4a9d558a412a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/light/vcnl4000.txt
> @@ -0,0 +1,22 @@
> +VISHAY VCNL4000 -  Ambient Light and proximity sensor
> +
> +This driver supports the VCNL4000/10/20 and VCNL4200 chips
> +
> +Required properties:
> +
> +	-compatible: must be one of :
> +        vishay,vcnl4000
> +        vishay,vcnl4010
> +        vishay,vcnl4020
> +        vishay,vcnl4200
> +
> +	-reg: I2C address of the sensor, should be one from below based on the model:
> +        0x13
> +        0x51
> +
> +Example:
> +
> +light-sensor@51 {
> +	compatible = "vishay,vcnl4200";
> +	reg = <0x51>;
> +};

Re: [PATCH v3 3/5] dt-bindings: iio: light: add vcnl4000 devicetree bindings

[Rob Herring]

On Thu, 21 Mar 2019 08:40:45 -0700, "Angus Ainslie (Purism)" wrote:
> Document the vishay VCNL4000 devicetree bindings.
> 
> Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>
> ---
>  .../bindings/iio/light/vcnl4000.txt           | 22 +++++++++++++++++++
>  1 file changed, 22 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/light/vcnl4000.txt
> 

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

[PATCH v3 4/5] iio: light: vcnl4000 add support for the VCNL4040 proximity and light sensor

[Angus Ainslie (Purism)]

The VCNL4040 is almost identical to the VCNL4200 as far as register
layout goes but just need to check a different ID register location.

Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>
---
 drivers/iio/light/vcnl4000.c | 51 ++++++++++++++++++++++++++++++------
 1 file changed, 43 insertions(+), 8 deletions(-)

diff --git a/drivers/iio/light/vcnl4000.c b/drivers/iio/light/vcnl4000.c
index 308cb2d2b641..12c52f2b853a 100644
--- a/drivers/iio/light/vcnl4000.c
+++ b/drivers/iio/light/vcnl4000.c
@@ -1,8 +1,9 @@
 /*
- * vcnl4000.c - Support for Vishay VCNL4000/4010/4020/4200 combined ambient
+ * vcnl4000.c - Support for Vishay VCNL4000/4010/4020/4040/4200 combined ambient
  * light and proximity sensor
  *
  * Copyright 2012 Peter Meerwald <pmeerw@pmeerw.net>
+ * Copyright 2019 Pursim SPC
  *
  * This file is subject to the terms and conditions of version 2 of
  * the GNU General Public License.  See the file COPYING in the main
@@ -10,13 +11,14 @@
  *
  * IIO driver for:
  *   VCNL4000/10/20 (7-bit I2C slave address 0x13)
+ *   VCNL4040 (7-bit I2C slave address 0x60)
  *   VCNL4200 (7-bit I2C slave address 0x51)
  *
  * TODO:
  *   allow to adjust IR current
  *   proximity threshold and event handling
  *   periodic ALS/proximity measurement (VCNL4010/20)
- *   interrupts (VCNL4010/20, VCNL4200)
+ *   interrupts (VCNL4010/20/40, VCNL4200)
  */
 
 #include <linux/module.h>
@@ -30,6 +32,7 @@
 #define VCNL4000_DRV_NAME "vcnl4000"
 #define VCNL4000_PROD_ID	0x01
 #define VCNL4010_PROD_ID	0x02 /* for VCNL4020, VCNL4010 */
+#define VCNL4040_PROD_ID	0x86
 #define VCNL4200_PROD_ID	0x58
 
 #define VCNL4000_COMMAND	0x80 /* Command register */
@@ -49,6 +52,8 @@
 #define VCNL4200_AL_DATA	0x09 /* Ambient light data */
 #define VCNL4200_DEV_ID		0x0e /* Device ID, slave address and version */
 
+#define VCNL4040_DEV_ID		0x0c /* Device ID and version */
+
 /* Bit masks for COMMAND register */
 #define VCNL4000_AL_RDY		BIT(6) /* ALS data ready? */
 #define VCNL4000_PS_RDY		BIT(5) /* proximity data ready? */
@@ -58,6 +63,7 @@
 enum vcnl4000_device_ids {
 	VCNL4000,
 	VCNL4010,
+	VCNL4040,
 	VCNL4200,
 };
 
@@ -90,6 +96,7 @@ static const struct i2c_device_id vcnl4000_id[] = {
 	{ "vcnl4000", VCNL4000 },
 	{ "vcnl4010", VCNL4010 },
 	{ "vcnl4020", VCNL4010 },
+	{ "vcnl4040", VCNL4040 },
 	{ "vcnl4200", VCNL4200 },
 	{ }
 };
@@ -128,14 +135,26 @@ static int vcnl4000_init(struct vcnl4000_data *data)
 
 static int vcnl4200_init(struct vcnl4000_data *data)
 {
-	int ret;
+	int ret, id;
 
 	ret = i2c_smbus_read_word_data(data->client, VCNL4200_DEV_ID);
 	if (ret < 0)
 		return ret;
 
-	if ((ret & 0xff) != VCNL4200_PROD_ID)
-		return -ENODEV;
+	id = ret & 0xff;
+
+	if (id != VCNL4200_PROD_ID) {
+		ret = i2c_smbus_read_word_data(data->client, VCNL4040_DEV_ID);
+		if (ret < 0)
+			return ret;
+
+		id = ret & 0xff;
+
+		if (id != VCNL4040_PROD_ID)
+			return -ENODEV;
+	}
+
+	dev_dbg(&data->client->dev, "device id 0x%x", id);
 
 	data->rev = (ret >> 8) & 0xf;
 
@@ -150,9 +169,19 @@ static int vcnl4200_init(struct vcnl4000_data *data)
 	data->al_scale = 24000;
 	data->vcnl4200_al.reg = VCNL4200_AL_DATA;
 	data->vcnl4200_ps.reg = VCNL4200_PS_DATA;
-	/* Integration time is 50ms, but the experiments show 54ms in total. */
-	data->vcnl4200_al.sampling_rate = ktime_set(0, 54000 * 1000);
-	data->vcnl4200_ps.sampling_rate = ktime_set(0, 4200 * 1000);
+	switch (id) {
+	case VCNL4200_PROD_ID:
+		/* Integration time is 50ms, but the experiments */
+		/* show 54ms in total. */
+		data->vcnl4200_al.sampling_rate = ktime_set(0, 54000 * 1000);
+		data->vcnl4200_ps.sampling_rate = ktime_set(0, 4200 * 1000);
+		break;
+	case VCNL4040_PROD_ID:
+		/* Integration time is 80ms, add 10ms. */
+		data->vcnl4200_al.sampling_rate = ktime_set(0, 100000 * 1000);
+		data->vcnl4200_ps.sampling_rate = ktime_set(0, 100000 * 1000);
+		break;
+	}
 	data->vcnl4200_al.last_measurement = ktime_set(0, 0);
 	data->vcnl4200_ps.last_measurement = ktime_set(0, 0);
 	mutex_init(&data->vcnl4200_al.lock);
@@ -271,6 +300,12 @@ static const struct vcnl4000_chip_spec vcnl4000_chip_spec_cfg[] = {
 		.measure_light = vcnl4000_measure_light,
 		.measure_proximity = vcnl4000_measure_proximity,
 	},
+	[VCNL4040] = {
+		.prod = "VCNL4040",
+		.init = vcnl4200_init,
+		.measure_light = vcnl4200_measure_light,
+		.measure_proximity = vcnl4200_measure_proximity,
+	},
 	[VCNL4200] = {
 		.prod = "VCNL4200",
 		.init = vcnl4200_init,
-- 
2.17.1

Re: [PATCH v3 4/5] iio: light: vcnl4000 add support for the VCNL4040 proximity and light sensor

[Jonathan Cameron]

On Thu, 21 Mar 2019 08:40:46 -0700
"Angus Ainslie (Purism)" <angus@akkea.ca> wrote:

> The VCNL4040 is almost identical to the VCNL4200 as far as register
> layout goes but just need to check a different ID register location.
> 
> Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>
Applied to the togreg branch of iio.git and pushed out as testing for
the autobuilders to play with it.

Thanks,

Jonathan

> ---
>  drivers/iio/light/vcnl4000.c | 51 ++++++++++++++++++++++++++++++------
>  1 file changed, 43 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/iio/light/vcnl4000.c b/drivers/iio/light/vcnl4000.c
> index 308cb2d2b641..12c52f2b853a 100644
> --- a/drivers/iio/light/vcnl4000.c
> +++ b/drivers/iio/light/vcnl4000.c
> @@ -1,8 +1,9 @@
>  /*
> - * vcnl4000.c - Support for Vishay VCNL4000/4010/4020/4200 combined ambient
> + * vcnl4000.c - Support for Vishay VCNL4000/4010/4020/4040/4200 combined ambient
>   * light and proximity sensor
>   *
>   * Copyright 2012 Peter Meerwald <pmeerw@pmeerw.net>
> + * Copyright 2019 Pursim SPC
>   *
>   * This file is subject to the terms and conditions of version 2 of
>   * the GNU General Public License.  See the file COPYING in the main
> @@ -10,13 +11,14 @@
>   *
>   * IIO driver for:
>   *   VCNL4000/10/20 (7-bit I2C slave address 0x13)
> + *   VCNL4040 (7-bit I2C slave address 0x60)
>   *   VCNL4200 (7-bit I2C slave address 0x51)
>   *
>   * TODO:
>   *   allow to adjust IR current
>   *   proximity threshold and event handling
>   *   periodic ALS/proximity measurement (VCNL4010/20)
> - *   interrupts (VCNL4010/20, VCNL4200)
> + *   interrupts (VCNL4010/20/40, VCNL4200)
>   */
>  
>  #include <linux/module.h>
> @@ -30,6 +32,7 @@
>  #define VCNL4000_DRV_NAME "vcnl4000"
>  #define VCNL4000_PROD_ID	0x01
>  #define VCNL4010_PROD_ID	0x02 /* for VCNL4020, VCNL4010 */
> +#define VCNL4040_PROD_ID	0x86
>  #define VCNL4200_PROD_ID	0x58
>  
>  #define VCNL4000_COMMAND	0x80 /* Command register */
> @@ -49,6 +52,8 @@
>  #define VCNL4200_AL_DATA	0x09 /* Ambient light data */
>  #define VCNL4200_DEV_ID		0x0e /* Device ID, slave address and version */
>  
> +#define VCNL4040_DEV_ID		0x0c /* Device ID and version */
> +
>  /* Bit masks for COMMAND register */
>  #define VCNL4000_AL_RDY		BIT(6) /* ALS data ready? */
>  #define VCNL4000_PS_RDY		BIT(5) /* proximity data ready? */
> @@ -58,6 +63,7 @@
>  enum vcnl4000_device_ids {
>  	VCNL4000,
>  	VCNL4010,
> +	VCNL4040,
>  	VCNL4200,
>  };
>  
> @@ -90,6 +96,7 @@ static const struct i2c_device_id vcnl4000_id[] = {
>  	{ "vcnl4000", VCNL4000 },
>  	{ "vcnl4010", VCNL4010 },
>  	{ "vcnl4020", VCNL4010 },
> +	{ "vcnl4040", VCNL4040 },
>  	{ "vcnl4200", VCNL4200 },
>  	{ }
>  };
> @@ -128,14 +135,26 @@ static int vcnl4000_init(struct vcnl4000_data *data)
>  
>  static int vcnl4200_init(struct vcnl4000_data *data)
>  {
> -	int ret;
> +	int ret, id;
>  
>  	ret = i2c_smbus_read_word_data(data->client, VCNL4200_DEV_ID);
>  	if (ret < 0)
>  		return ret;
>  
> -	if ((ret & 0xff) != VCNL4200_PROD_ID)
> -		return -ENODEV;
> +	id = ret & 0xff;
> +
> +	if (id != VCNL4200_PROD_ID) {
> +		ret = i2c_smbus_read_word_data(data->client, VCNL4040_DEV_ID);
> +		if (ret < 0)
> +			return ret;
> +
> +		id = ret & 0xff;
> +
> +		if (id != VCNL4040_PROD_ID)
> +			return -ENODEV;
> +	}
> +
> +	dev_dbg(&data->client->dev, "device id 0x%x", id);
>  
>  	data->rev = (ret >> 8) & 0xf;
>  
> @@ -150,9 +169,19 @@ static int vcnl4200_init(struct vcnl4000_data *data)
>  	data->al_scale = 24000;
>  	data->vcnl4200_al.reg = VCNL4200_AL_DATA;
>  	data->vcnl4200_ps.reg = VCNL4200_PS_DATA;
> -	/* Integration time is 50ms, but the experiments show 54ms in total. */
> -	data->vcnl4200_al.sampling_rate = ktime_set(0, 54000 * 1000);
> -	data->vcnl4200_ps.sampling_rate = ktime_set(0, 4200 * 1000);
> +	switch (id) {
> +	case VCNL4200_PROD_ID:
> +		/* Integration time is 50ms, but the experiments */
> +		/* show 54ms in total. */
> +		data->vcnl4200_al.sampling_rate = ktime_set(0, 54000 * 1000);
> +		data->vcnl4200_ps.sampling_rate = ktime_set(0, 4200 * 1000);
> +		break;
> +	case VCNL4040_PROD_ID:
> +		/* Integration time is 80ms, add 10ms. */
> +		data->vcnl4200_al.sampling_rate = ktime_set(0, 100000 * 1000);
> +		data->vcnl4200_ps.sampling_rate = ktime_set(0, 100000 * 1000);
> +		break;
> +	}
>  	data->vcnl4200_al.last_measurement = ktime_set(0, 0);
>  	data->vcnl4200_ps.last_measurement = ktime_set(0, 0);
>  	mutex_init(&data->vcnl4200_al.lock);
> @@ -271,6 +300,12 @@ static const struct vcnl4000_chip_spec vcnl4000_chip_spec_cfg[] = {
>  		.measure_light = vcnl4000_measure_light,
>  		.measure_proximity = vcnl4000_measure_proximity,
>  	},
> +	[VCNL4040] = {
> +		.prod = "VCNL4040",
> +		.init = vcnl4200_init,
> +		.measure_light = vcnl4200_measure_light,
> +		.measure_proximity = vcnl4200_measure_proximity,
> +	},
>  	[VCNL4200] = {
>  		.prod = "VCNL4200",
>  		.init = vcnl4200_init,

[PATCH v3 5/5] dt-bindings: iio: light: add vcnl4040 devicetree bindings

[Angus Ainslie (Purism)]

Document the vishay VCNL4040 devicetree bindings.

Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>
---
 Documentation/devicetree/bindings/iio/light/vcnl4000.txt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/iio/light/vcnl4000.txt b/Documentation/devicetree/bindings/iio/light/vcnl4000.txt
index 4a9d558a412a..955af4555c90 100644
--- a/Documentation/devicetree/bindings/iio/light/vcnl4000.txt
+++ b/Documentation/devicetree/bindings/iio/light/vcnl4000.txt
@@ -1,6 +1,6 @@
 VISHAY VCNL4000 -  Ambient Light and proximity sensor
 
-This driver supports the VCNL4000/10/20 and VCNL4200 chips
+This driver supports the VCNL4000/10/20/40 and VCNL4200 chips
 
 Required properties:
 
@@ -8,11 +8,13 @@ Required properties:
         vishay,vcnl4000
         vishay,vcnl4010
         vishay,vcnl4020
+        vishay,vcnl4040
         vishay,vcnl4200
 
 	-reg: I2C address of the sensor, should be one from below based on the model:
         0x13
         0x51
+        0x60
 
 Example:
 
-- 
2.17.1

Re: [PATCH v3 5/5] dt-bindings: iio: light: add vcnl4040 devicetree bindings

[Jonathan Cameron]

On Thu, 21 Mar 2019 08:40:47 -0700
"Angus Ainslie (Purism)" <angus@akkea.ca> wrote:

> Document the vishay VCNL4040 devicetree bindings.
> 
> Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>
Applied.

Thanks,

Jonathan
> ---
>  Documentation/devicetree/bindings/iio/light/vcnl4000.txt | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/iio/light/vcnl4000.txt b/Documentation/devicetree/bindings/iio/light/vcnl4000.txt
> index 4a9d558a412a..955af4555c90 100644
> --- a/Documentation/devicetree/bindings/iio/light/vcnl4000.txt
> +++ b/Documentation/devicetree/bindings/iio/light/vcnl4000.txt
> @@ -1,6 +1,6 @@
>  VISHAY VCNL4000 -  Ambient Light and proximity sensor
>  
> -This driver supports the VCNL4000/10/20 and VCNL4200 chips
> +This driver supports the VCNL4000/10/20/40 and VCNL4200 chips
>  
>  Required properties:
>  
> @@ -8,11 +8,13 @@ Required properties:
>          vishay,vcnl4000
>          vishay,vcnl4010
>          vishay,vcnl4020
> +        vishay,vcnl4040
>          vishay,vcnl4200
>  
>  	-reg: I2C address of the sensor, should be one from below based on the model:
>          0x13
>          0x51
> +        0x60
>  
>  Example:
>  

Re: [PATCH v3 5/5] dt-bindings: iio: light: add vcnl4040 devicetree bindings

[Rob Herring]

On Thu, 21 Mar 2019 08:40:47 -0700, "Angus Ainslie (Purism)" wrote:
> Document the vishay VCNL4040 devicetree bindings.
> 
> Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>
> ---
>  Documentation/devicetree/bindings/iio/light/vcnl4000.txt | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 

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