diff mbox series

[v2,3/7] iio: tsl2772: add support for reading power settings from device tree

Message ID 20180717084158.23532-4-masneyb@onstation.org
State Changes Requested, archived
Headers show
Series ARM: dts: qcom: msm8974-hammerhead: add more sensors | expand

Commit Message

Brian Masney July 17, 2018, 8:41 a.m. UTC
This patch adds support for optionally reading the prox_diode and
prox_power settings from device tree. This was tested using a LG
Nexus 5 (hammerhead) which requires a different diode than the driver
default for the IR LED.

Signed-off-by: Brian Masney <masneyb@onstation.org>
---
The next patch in the series removes the tsl2772 driver from the
trivial-devices.txt file. I separated it out so that change can go
through device tree.

 .../devicetree/bindings/iio/light/tsl2772.txt | 39 +++++++++++++++++++
 drivers/iio/light/tsl2772.c                   | 16 ++++++++
 include/dt-bindings/iio/amstaos,tsl2772.h     | 24 ++++++++++++
 3 files changed, 79 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/light/tsl2772.txt
 create mode 100644 include/dt-bindings/iio/amstaos,tsl2772.h

Comments

Rob Herring July 20, 2018, 5:36 p.m. UTC | #1
On Tue, Jul 17, 2018 at 04:41:54AM -0400, Brian Masney wrote:
> This patch adds support for optionally reading the prox_diode and
> prox_power settings from device tree. This was tested using a LG
> Nexus 5 (hammerhead) which requires a different diode than the driver
> default for the IR LED.
> 
> Signed-off-by: Brian Masney <masneyb@onstation.org>
> ---
> The next patch in the series removes the tsl2772 driver from the
> trivial-devices.txt file. I separated it out so that change can go
> through device tree.
> 
>  .../devicetree/bindings/iio/light/tsl2772.txt | 39 +++++++++++++++++++

Please split DT bindings to separate patch.

>  drivers/iio/light/tsl2772.c                   | 16 ++++++++
>  include/dt-bindings/iio/amstaos,tsl2772.h     | 24 ++++++++++++
>  3 files changed, 79 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/light/tsl2772.txt
>  create mode 100644 include/dt-bindings/iio/amstaos,tsl2772.h
> 
> diff --git a/Documentation/devicetree/bindings/iio/light/tsl2772.txt b/Documentation/devicetree/bindings/iio/light/tsl2772.txt
> new file mode 100644
> index 000000000000..ab553d52b9fc
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/light/tsl2772.txt
> @@ -0,0 +1,39 @@
> +* AMS/TAOS ALS and proximity sensor
> +
> +Required properties:
> +
> +  - compatible: Should be one of
> +		"amstaos,tsl2571"
> +		"amstaos,tsl2671"
> +		"amstaos,tmd2671"
> +		"amstaos,tsl2771"
> +		"amstaos,tmd2771"
> +		"amstaos,tsl2572"
> +		"amstaos,tsl2672"
> +		"amstaos,tmd2672"
> +		"amstaos,tsl2772"
> +		"amstaos,tmd2772"
> +  - reg: the I2C address of the device
> +
> +Optional properties:
> +
> +  - amstaos,prox_diode - must be TSL2772_DIODE0, TSL2772_DIODE1, or
> +                         TSL2772_DIODE_BOTH.

s/_/-/

> +  - amstaos,prox_power - must be TSL2772_100_mA, TSL2772_50_mA, TSL2772_25_mA,
> +                         or TSL2772_13_mA.

I wonder if this should be common. Perhaps we should use the existing 
'led-max-microamp' as this is setting the current for an IR LED.

And while called 'power' this setting is current.

> +  - interrupt-parent: should be the phandle for the interrupt controller

Don't need to document this. It's implied by interrupts (and could be in 
a parent node).

> +  - interrupts: the sole interrupt generated by the device
> +
> +  Refer to interrupt-controller/interrupts.txt for generic interrupt client
> +  node bindings.
> +
> +Example:
> +
> +#include <dt-bindings/iio/amstaos,tsl2772.h>
> +
> +tsl2772@39 {
> +	compatible = "amstaos,tsl2772";
> +	reg = <0x39>;
> +	interrupts-extended = <&msmgpio 61 IRQ_TYPE_EDGE_FALLING>;
> +	amstaos,prox_diode = <TSL2772_DIODE0>;
> +};
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Jonathan Cameron July 21, 2018, 5:35 p.m. UTC | #2
On Tue, 17 Jul 2018 04:41:54 -0400
Brian Masney <masneyb@onstation.org> wrote:

> This patch adds support for optionally reading the prox_diode and
> prox_power settings from device tree. This was tested using a LG
> Nexus 5 (hammerhead) which requires a different diode than the driver
> default for the IR LED.
> 
> Signed-off-by: Brian Masney <masneyb@onstation.org>

I think we can make this binding more 'generic' as right now
the amstaos bindings aren't even general enough to apply
to future amstaos devices that need a similar binding.

I'm always anti defines rather than real values in DT (where
possible) and I think there is no reason not to use real values
here.

Jonathan

> ---
> The next patch in the series removes the tsl2772 driver from the
> trivial-devices.txt file. I separated it out so that change can go
> through device tree.
> 
>  .../devicetree/bindings/iio/light/tsl2772.txt | 39 +++++++++++++++++++
>  drivers/iio/light/tsl2772.c                   | 16 ++++++++
>  include/dt-bindings/iio/amstaos,tsl2772.h     | 24 ++++++++++++
>  3 files changed, 79 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/light/tsl2772.txt
>  create mode 100644 include/dt-bindings/iio/amstaos,tsl2772.h
> 
> diff --git a/Documentation/devicetree/bindings/iio/light/tsl2772.txt b/Documentation/devicetree/bindings/iio/light/tsl2772.txt
> new file mode 100644
> index 000000000000..ab553d52b9fc
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/light/tsl2772.txt
> @@ -0,0 +1,39 @@
> +* AMS/TAOS ALS and proximity sensor
> +
> +Required properties:
> +
> +  - compatible: Should be one of
> +		"amstaos,tsl2571"
> +		"amstaos,tsl2671"
> +		"amstaos,tmd2671"
> +		"amstaos,tsl2771"
> +		"amstaos,tmd2771"
> +		"amstaos,tsl2572"
> +		"amstaos,tsl2672"
> +		"amstaos,tmd2672"
> +		"amstaos,tsl2772"
> +		"amstaos,tmd2772"
> +  - reg: the I2C address of the device
> +
> +Optional properties:
> +
> +  - amstaos,prox_diode - must be TSL2772_DIODE0, TSL2772_DIODE1, or
> +                         TSL2772_DIODE_BOTH.
> +  - amstaos,prox_power - must be TSL2772_100_mA, TSL2772_50_mA, TSL2772_25_mA,
> +                         or TSL2772_13_mA.
> +  - interrupt-parent: should be the phandle for the interrupt controller
> +  - interrupts: the sole interrupt generated by the device
> +
> +  Refer to interrupt-controller/interrupts.txt for generic interrupt client
> +  node bindings.
> +
> +Example:
> +
> +#include <dt-bindings/iio/amstaos,tsl2772.h>
> +
> +tsl2772@39 {
> +	compatible = "amstaos,tsl2772";
> +	reg = <0x39>;
> +	interrupts-extended = <&msmgpio 61 IRQ_TYPE_EDGE_FALLING>;
> +	amstaos,prox_diode = <TSL2772_DIODE0>;
> +};
> diff --git a/drivers/iio/light/tsl2772.c b/drivers/iio/light/tsl2772.c
> index 34d42a2504c9..0be57f2ecb02 100644
> --- a/drivers/iio/light/tsl2772.c
> +++ b/drivers/iio/light/tsl2772.c
> @@ -515,6 +515,18 @@ static int tsl2772_get_prox(struct iio_dev *indio_dev)
>  	return ret;
>  }
>  
> +#ifdef CONFIG_OF
> +static void tsl2772_parse_dt(struct tsl2772_chip *chip)
> +{
> +	struct device_node *of_node = chip->client->dev.of_node;
> +
> +	of_property_read_u32(of_node, "amstaos,prox_diode",
> +			     &chip->settings.prox_diode);
> +	of_property_read_u32(of_node, "amstaos,prox_power",
> +			     &chip->settings.prox_power);
> +}
> +#endif
> +
>  /**
>   * tsl2772_defaults() - Populates the device nominal operating parameters
>   *                      with those provided by a 'platform' data struct or
> @@ -541,6 +553,10 @@ static void tsl2772_defaults(struct tsl2772_chip *chip)
>  		memcpy(chip->tsl2772_device_lux,
>  		       tsl2772_default_lux_table_group[chip->id],
>  		       TSL2772_DEFAULT_TABLE_BYTES);
> +
> +#ifdef CONFIG_OF
> +	tsl2772_parse_dt(chip);
> +#endif
>  }
>  
>  /**
> diff --git a/include/dt-bindings/iio/amstaos,tsl2772.h b/include/dt-bindings/iio/amstaos,tsl2772.h
> new file mode 100644
> index 000000000000..ad6f9fbc0845
> --- /dev/null
> +++ b/include/dt-bindings/iio/amstaos,tsl2772.h
> @@ -0,0 +1,24 @@
> +/* SPDX-License-Identifier: GPL-2.0+ */
> +/*
> + * Device driver for monitoring ambient light intensity (lux)
> + * and proximity (prox) within the TAOS TSL2772 family of devices.
> + *
> + * Copyright (c) 2012 TAOS Corporation.
> + * Copyright (c) 2017-2018 Brian Masney <masneyb@onstation.org>
> + */
> +
> +#ifndef _DT_BINDINGS_AMSTAOS_TSL2772_H
> +#define _DT_BINDINGS_AMSTAOS_TSL2772_H
> +
> +/* Proximity diode to use */
> +#define TSL2772_DIODE0                  0x01
> +#define TSL2772_DIODE1                  0x02
> +#define TSL2772_DIODE_BOTH              0x03

Can we have two separate parameters to enable them?

> +
> +/* LED Power */
> +#define TSL2772_100_mA                  0x00
> +#define TSL2772_50_mA                   0x01
> +#define TSL2772_25_mA                   0x02
> +#define TSL2772_13_mA                   0x03

I'd like to see real numbers rather than defines.  List the valid
values in the binding then match them to register addresses in the 
driver.

A different instance of this binding for a different taos device
might have different values that are valid.


> +
> +#endif /* _DT_BINDINGS_AMSTAOS_TSL2772_H */

--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Jonathan Cameron July 21, 2018, 5:37 p.m. UTC | #3
On Fri, 20 Jul 2018 11:36:35 -0600
Rob Herring <robh@kernel.org> wrote:

> On Tue, Jul 17, 2018 at 04:41:54AM -0400, Brian Masney wrote:
> > This patch adds support for optionally reading the prox_diode and
> > prox_power settings from device tree. This was tested using a LG
> > Nexus 5 (hammerhead) which requires a different diode than the driver
> > default for the IR LED.
> > 
> > Signed-off-by: Brian Masney <masneyb@onstation.org>
> > ---
> > The next patch in the series removes the tsl2772 driver from the
> > trivial-devices.txt file. I separated it out so that change can go
> > through device tree.
> > 
> >  .../devicetree/bindings/iio/light/tsl2772.txt | 39 +++++++++++++++++++  
> 
> Please split DT bindings to separate patch.
> 
> >  drivers/iio/light/tsl2772.c                   | 16 ++++++++
> >  include/dt-bindings/iio/amstaos,tsl2772.h     | 24 ++++++++++++
> >  3 files changed, 79 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/iio/light/tsl2772.txt
> >  create mode 100644 include/dt-bindings/iio/amstaos,tsl2772.h
> > 
> > diff --git a/Documentation/devicetree/bindings/iio/light/tsl2772.txt b/Documentation/devicetree/bindings/iio/light/tsl2772.txt
> > new file mode 100644
> > index 000000000000..ab553d52b9fc
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/iio/light/tsl2772.txt
> > @@ -0,0 +1,39 @@
> > +* AMS/TAOS ALS and proximity sensor
> > +
> > +Required properties:
> > +
> > +  - compatible: Should be one of
> > +		"amstaos,tsl2571"
> > +		"amstaos,tsl2671"
> > +		"amstaos,tmd2671"
> > +		"amstaos,tsl2771"
> > +		"amstaos,tmd2771"
> > +		"amstaos,tsl2572"
> > +		"amstaos,tsl2672"
> > +		"amstaos,tmd2672"
> > +		"amstaos,tsl2772"
> > +		"amstaos,tmd2772"
> > +  - reg: the I2C address of the device
> > +
> > +Optional properties:
> > +
> > +  - amstaos,prox_diode - must be TSL2772_DIODE0, TSL2772_DIODE1, or
> > +                         TSL2772_DIODE_BOTH.  
> 
> s/_/-/
> 
> > +  - amstaos,prox_power - must be TSL2772_100_mA, TSL2772_50_mA, TSL2772_25_mA,
> > +                         or TSL2772_13_mA.  
> 
> I wonder if this should be common. Perhaps we should use the existing 
> 'led-max-microamp' as this is setting the current for an IR LED.

Seems reasonable, then perhaps have two controls to turn on the diodes
above.

> 
> And while called 'power' this setting is current.

Also can we have real values?  I really don't like defines if they
aren't absolutely necessary - particularly when there is a nice real
unit to be used.

> 
> > +  - interrupt-parent: should be the phandle for the interrupt controller  
> 
> Don't need to document this. It's implied by interrupts (and could be in 
> a parent node).
> 
> > +  - interrupts: the sole interrupt generated by the device
> > +
> > +  Refer to interrupt-controller/interrupts.txt for generic interrupt client
> > +  node bindings.
> > +
> > +Example:
> > +
> > +#include <dt-bindings/iio/amstaos,tsl2772.h>
> > +
> > +tsl2772@39 {
> > +	compatible = "amstaos,tsl2772";
> > +	reg = <0x39>;
> > +	interrupts-extended = <&msmgpio 61 IRQ_TYPE_EDGE_FALLING>;
> > +	amstaos,prox_diode = <TSL2772_DIODE0>;
> > +};  
> --
> To unsubscribe from this list: send the line "unsubscribe linux-iio" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Brian Masney July 22, 2018, 12:37 p.m. UTC | #4
On Sat, Jul 21, 2018 at 06:37:16PM +0100, Jonathan Cameron wrote:
> On Fri, 20 Jul 2018 11:36:35 -0600
> Rob Herring <robh@kernel.org> wrote:
> 
> > On Tue, Jul 17, 2018 at 04:41:54AM -0400, Brian Masney wrote:
> > > This patch adds support for optionally reading the prox_diode and
> > > prox_power settings from device tree. This was tested using a LG
> > > Nexus 5 (hammerhead) which requires a different diode than the driver
> > > default for the IR LED.
> > > 
> > > Signed-off-by: Brian Masney <masneyb@onstation.org>
> > > ---
> > > The next patch in the series removes the tsl2772 driver from the
> > > trivial-devices.txt file. I separated it out so that change can go
> > > through device tree.
> > > 
> > >  .../devicetree/bindings/iio/light/tsl2772.txt | 39 +++++++++++++++++++  
> > 
> > Please split DT bindings to separate patch.
> > 
> > >  drivers/iio/light/tsl2772.c                   | 16 ++++++++
> > >  include/dt-bindings/iio/amstaos,tsl2772.h     | 24 ++++++++++++
> > >  3 files changed, 79 insertions(+)
> > >  create mode 100644 Documentation/devicetree/bindings/iio/light/tsl2772.txt
> > >  create mode 100644 include/dt-bindings/iio/amstaos,tsl2772.h
> > > 
> > > diff --git a/Documentation/devicetree/bindings/iio/light/tsl2772.txt b/Documentation/devicetree/bindings/iio/light/tsl2772.txt
> > > new file mode 100644
> > > index 000000000000..ab553d52b9fc
> > > --- /dev/null
> > > +++ b/Documentation/devicetree/bindings/iio/light/tsl2772.txt
> > > @@ -0,0 +1,39 @@
> > > +* AMS/TAOS ALS and proximity sensor
> > > +
> > > +Required properties:
> > > +
> > > +  - compatible: Should be one of
> > > +		"amstaos,tsl2571"
> > > +		"amstaos,tsl2671"
> > > +		"amstaos,tmd2671"
> > > +		"amstaos,tsl2771"
> > > +		"amstaos,tmd2771"
> > > +		"amstaos,tsl2572"
> > > +		"amstaos,tsl2672"
> > > +		"amstaos,tmd2672"
> > > +		"amstaos,tsl2772"
> > > +		"amstaos,tmd2772"
> > > +  - reg: the I2C address of the device
> > > +
> > > +Optional properties:
> > > +
> > > +  - amstaos,prox_diode - must be TSL2772_DIODE0, TSL2772_DIODE1, or
> > > +                         TSL2772_DIODE_BOTH.  
> > 
> > s/_/-/
> > 
> > > +  - amstaos,prox_power - must be TSL2772_100_mA, TSL2772_50_mA, TSL2772_25_mA,
> > > +                         or TSL2772_13_mA.  
> > 
> > I wonder if this should be common. Perhaps we should use the existing 
> > 'led-max-microamp' as this is setting the current for an IR LED.
> 
> Seems reasonable, then perhaps have two controls to turn on the diodes
> above.
> 
> > 
> > And while called 'power' this setting is current.
> 
> Also can we have real values?  I really don't like defines if they
> aren't absolutely necessary - particularly when there is a nice real
> unit to be used.

How about these options then?

amstaos,proximity-diode-0-enabled;
amstaos,proximity-diode-1-enabled;
led-max-microamp = <100000>;

Brian
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Jonathan Cameron July 22, 2018, 5:17 p.m. UTC | #5
On Sun, 22 Jul 2018 12:37:20 +0000
Brian Masney <masneyb@onstation.org> wrote:

> On Sat, Jul 21, 2018 at 06:37:16PM +0100, Jonathan Cameron wrote:
> > On Fri, 20 Jul 2018 11:36:35 -0600
> > Rob Herring <robh@kernel.org> wrote:
> >   
> > > On Tue, Jul 17, 2018 at 04:41:54AM -0400, Brian Masney wrote:  
> > > > This patch adds support for optionally reading the prox_diode and
> > > > prox_power settings from device tree. This was tested using a LG
> > > > Nexus 5 (hammerhead) which requires a different diode than the driver
> > > > default for the IR LED.
> > > > 
> > > > Signed-off-by: Brian Masney <masneyb@onstation.org>
> > > > ---
> > > > The next patch in the series removes the tsl2772 driver from the
> > > > trivial-devices.txt file. I separated it out so that change can go
> > > > through device tree.
> > > > 
> > > >  .../devicetree/bindings/iio/light/tsl2772.txt | 39 +++++++++++++++++++    
> > > 
> > > Please split DT bindings to separate patch.
> > >   
> > > >  drivers/iio/light/tsl2772.c                   | 16 ++++++++
> > > >  include/dt-bindings/iio/amstaos,tsl2772.h     | 24 ++++++++++++
> > > >  3 files changed, 79 insertions(+)
> > > >  create mode 100644 Documentation/devicetree/bindings/iio/light/tsl2772.txt
> > > >  create mode 100644 include/dt-bindings/iio/amstaos,tsl2772.h
> > > > 
> > > > diff --git a/Documentation/devicetree/bindings/iio/light/tsl2772.txt b/Documentation/devicetree/bindings/iio/light/tsl2772.txt
> > > > new file mode 100644
> > > > index 000000000000..ab553d52b9fc
> > > > --- /dev/null
> > > > +++ b/Documentation/devicetree/bindings/iio/light/tsl2772.txt
> > > > @@ -0,0 +1,39 @@
> > > > +* AMS/TAOS ALS and proximity sensor
> > > > +
> > > > +Required properties:
> > > > +
> > > > +  - compatible: Should be one of
> > > > +		"amstaos,tsl2571"
> > > > +		"amstaos,tsl2671"
> > > > +		"amstaos,tmd2671"
> > > > +		"amstaos,tsl2771"
> > > > +		"amstaos,tmd2771"
> > > > +		"amstaos,tsl2572"
> > > > +		"amstaos,tsl2672"
> > > > +		"amstaos,tmd2672"
> > > > +		"amstaos,tsl2772"
> > > > +		"amstaos,tmd2772"
> > > > +  - reg: the I2C address of the device
> > > > +
> > > > +Optional properties:
> > > > +
> > > > +  - amstaos,prox_diode - must be TSL2772_DIODE0, TSL2772_DIODE1, or
> > > > +                         TSL2772_DIODE_BOTH.    
> > > 
> > > s/_/-/
> > >   
> > > > +  - amstaos,prox_power - must be TSL2772_100_mA, TSL2772_50_mA, TSL2772_25_mA,
> > > > +                         or TSL2772_13_mA.    
> > > 
> > > I wonder if this should be common. Perhaps we should use the existing 
> > > 'led-max-microamp' as this is setting the current for an IR LED.  
> > 
> > Seems reasonable, then perhaps have two controls to turn on the diodes
> > above.
> >   
> > > 
> > > And while called 'power' this setting is current.  
> > 
> > Also can we have real values?  I really don't like defines if they
> > aren't absolutely necessary - particularly when there is a nice real
> > unit to be used.  
> 
> How about these options then?
> 
> amstaos,proximity-diode-0-enabled;
> amstaos,proximity-diode-1-enabled;
> led-max-microamp = <100000>;

Works for me.  Rob?

J
> 
> Brian

--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Rob Herring July 23, 2018, 1:28 p.m. UTC | #6
On Sun, Jul 22, 2018 at 11:17 AM Jonathan Cameron <jic23@kernel.org> wrote:
>
> On Sun, 22 Jul 2018 12:37:20 +0000
> Brian Masney <masneyb@onstation.org> wrote:
>
> > On Sat, Jul 21, 2018 at 06:37:16PM +0100, Jonathan Cameron wrote:
> > > On Fri, 20 Jul 2018 11:36:35 -0600
> > > Rob Herring <robh@kernel.org> wrote:
> > >
> > > > On Tue, Jul 17, 2018 at 04:41:54AM -0400, Brian Masney wrote:
> > > > > This patch adds support for optionally reading the prox_diode and
> > > > > prox_power settings from device tree. This was tested using a LG
> > > > > Nexus 5 (hammerhead) which requires a different diode than the driver
> > > > > default for the IR LED.
> > > > >
> > > > > Signed-off-by: Brian Masney <masneyb@onstation.org>

> > > > > +  - amstaos,prox_diode - must be TSL2772_DIODE0, TSL2772_DIODE1, or
> > > > > +                         TSL2772_DIODE_BOTH.
> > > >
> > > > s/_/-/
> > > >
> > > > > +  - amstaos,prox_power - must be TSL2772_100_mA, TSL2772_50_mA, TSL2772_25_mA,
> > > > > +                         or TSL2772_13_mA.
> > > >
> > > > I wonder if this should be common. Perhaps we should use the existing
> > > > 'led-max-microamp' as this is setting the current for an IR LED.
> > >
> > > Seems reasonable, then perhaps have two controls to turn on the diodes
> > > above.
> > >
> > > >
> > > > And while called 'power' this setting is current.
> > >
> > > Also can we have real values?  I really don't like defines if they
> > > aren't absolutely necessary - particularly when there is a nice real
> > > unit to be used.
> >
> > How about these options then?
> >
> > amstaos,proximity-diode-0-enabled;
> > amstaos,proximity-diode-1-enabled;
> > led-max-microamp = <100000>;
>
> Works for me.  Rob?

I think we're bikeshedding, but I'd prefer a single property though
perhaps as a list (0, 1, or <0 1>) or mask. A list would be similar to
the "led-sources" property format.

Rob
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/iio/light/tsl2772.txt b/Documentation/devicetree/bindings/iio/light/tsl2772.txt
new file mode 100644
index 000000000000..ab553d52b9fc
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/light/tsl2772.txt
@@ -0,0 +1,39 @@ 
+* AMS/TAOS ALS and proximity sensor
+
+Required properties:
+
+  - compatible: Should be one of
+		"amstaos,tsl2571"
+		"amstaos,tsl2671"
+		"amstaos,tmd2671"
+		"amstaos,tsl2771"
+		"amstaos,tmd2771"
+		"amstaos,tsl2572"
+		"amstaos,tsl2672"
+		"amstaos,tmd2672"
+		"amstaos,tsl2772"
+		"amstaos,tmd2772"
+  - reg: the I2C address of the device
+
+Optional properties:
+
+  - amstaos,prox_diode - must be TSL2772_DIODE0, TSL2772_DIODE1, or
+                         TSL2772_DIODE_BOTH.
+  - amstaos,prox_power - must be TSL2772_100_mA, TSL2772_50_mA, TSL2772_25_mA,
+                         or TSL2772_13_mA.
+  - interrupt-parent: should be the phandle for the interrupt controller
+  - interrupts: the sole interrupt generated by the device
+
+  Refer to interrupt-controller/interrupts.txt for generic interrupt client
+  node bindings.
+
+Example:
+
+#include <dt-bindings/iio/amstaos,tsl2772.h>
+
+tsl2772@39 {
+	compatible = "amstaos,tsl2772";
+	reg = <0x39>;
+	interrupts-extended = <&msmgpio 61 IRQ_TYPE_EDGE_FALLING>;
+	amstaos,prox_diode = <TSL2772_DIODE0>;
+};
diff --git a/drivers/iio/light/tsl2772.c b/drivers/iio/light/tsl2772.c
index 34d42a2504c9..0be57f2ecb02 100644
--- a/drivers/iio/light/tsl2772.c
+++ b/drivers/iio/light/tsl2772.c
@@ -515,6 +515,18 @@  static int tsl2772_get_prox(struct iio_dev *indio_dev)
 	return ret;
 }
 
+#ifdef CONFIG_OF
+static void tsl2772_parse_dt(struct tsl2772_chip *chip)
+{
+	struct device_node *of_node = chip->client->dev.of_node;
+
+	of_property_read_u32(of_node, "amstaos,prox_diode",
+			     &chip->settings.prox_diode);
+	of_property_read_u32(of_node, "amstaos,prox_power",
+			     &chip->settings.prox_power);
+}
+#endif
+
 /**
  * tsl2772_defaults() - Populates the device nominal operating parameters
  *                      with those provided by a 'platform' data struct or
@@ -541,6 +553,10 @@  static void tsl2772_defaults(struct tsl2772_chip *chip)
 		memcpy(chip->tsl2772_device_lux,
 		       tsl2772_default_lux_table_group[chip->id],
 		       TSL2772_DEFAULT_TABLE_BYTES);
+
+#ifdef CONFIG_OF
+	tsl2772_parse_dt(chip);
+#endif
 }
 
 /**
diff --git a/include/dt-bindings/iio/amstaos,tsl2772.h b/include/dt-bindings/iio/amstaos,tsl2772.h
new file mode 100644
index 000000000000..ad6f9fbc0845
--- /dev/null
+++ b/include/dt-bindings/iio/amstaos,tsl2772.h
@@ -0,0 +1,24 @@ 
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Device driver for monitoring ambient light intensity (lux)
+ * and proximity (prox) within the TAOS TSL2772 family of devices.
+ *
+ * Copyright (c) 2012 TAOS Corporation.
+ * Copyright (c) 2017-2018 Brian Masney <masneyb@onstation.org>
+ */
+
+#ifndef _DT_BINDINGS_AMSTAOS_TSL2772_H
+#define _DT_BINDINGS_AMSTAOS_TSL2772_H
+
+/* Proximity diode to use */
+#define TSL2772_DIODE0                  0x01
+#define TSL2772_DIODE1                  0x02
+#define TSL2772_DIODE_BOTH              0x03
+
+/* LED Power */
+#define TSL2772_100_mA                  0x00
+#define TSL2772_50_mA                   0x01
+#define TSL2772_25_mA                   0x02
+#define TSL2772_13_mA                   0x03
+
+#endif /* _DT_BINDINGS_AMSTAOS_TSL2772_H */