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iio: adc128s052: add matching options

PATCH In review Javier Arteaga 7 participants 20 messages Apr 23, 2018 – Oct 30, 2018

Subsystems (3)
Device tree bindings IIO TI ADC12xs and ROHM BD79104 ADC driver
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Javier Arteaga

author
#0 lore raw

v2 cover iio: adc128s052: add matching options

Hi all,

On some SKUs of AAEON's UP Squared board, there is an ADC124S101 enumerated via ACPI. This is a pin-compatible variant of ADC124S021, which is already supported by the adc128s052 driver.

This patchset adds missing DT compatible strings for ADC124S021 (and ADC122S021) variants, adds AAEON's allocated ACPI HID, and allows ACPI _DSD based matching.

v1 was posted at:
https://lkml.kernel.org/r/[email protected]

Changes from v1:
* Improved patch descriptions and series title
* Added an initial commit introducing new compatible strings (as per Jonathan's suggestion)
* Moved of_match_ptr removal last as this patch is less important to us

Dan O'Donovan (1):
iio: adc128s052: reuse "compatible" for ACPI _DSD

Javier Arteaga (1):
iio: adc128s052: Add pin-compatible IDs

Nicola Lunghi (1):
iio: adc128s052: add ACPI _HID AANT1280

 drivers/iio/adc/ti-adc128s052.c | 43 ++++++++++++++++++++++++++++-----
 1 file changed, 37 insertions(+), 6 deletions(-)
Signature · 1 line
2.17.0
author
#1 lore raw

PATCH v2 1/3 iio: adc128s052: Add pin-compatible IDs

The datasheets for ADC122S021 and ADC124S021 list two more pin-compatible alternatives for each device.

Add their IDs as compatible strings.

Suggested-by Jonathan Cameron <[email protected]>
Signed-off-by Javier Arteaga <[email protected]>
---
 drivers/iio/adc/ti-adc128s052.c | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)
drivers/iio/adc/ti-adc128s052.c +12 -4
index 7cf39b3e2416..e6716c326c5e 100644
@@ -186,15 +186,23 @@ static int adc128_remove(struct spi_device *spi)
 static const struct of_device_id adc128_of_match[] = {
 	{ .compatible = "ti,adc128s052", },
 	{ .compatible = "ti,adc122s021", },
+	{ .compatible = "ti,adc122s051", },
+	{ .compatible = "ti,adc122s101", },
 	{ .compatible = "ti,adc124s021", },
-	{ /* sentinel */ },
+	{ .compatible = "ti,adc124s051", },
+	{ .compatible = "ti,adc124s101", },
+	{ }
 };
 MODULE_DEVICE_TABLE(of, adc128_of_match);
 
 static const struct spi_device_id adc128_id[] = {
-	{ "adc128s052", 0},	/* index into adc128_config */
-	{ "adc122s021",	1},
-	{ "adc124s021", 2},
+	{ "adc128s052", 0 },	/* index into adc128_config */
+	{ "adc122s021",	1 },
+	{ "adc122s051",	1 },
+	{ "adc122s101",	1 },
+	{ "adc124s021", 2 },
+	{ "adc124s051", 2 },
+	{ "adc124s101", 2 },
 	{ }
 };
 MODULE_DEVICE_TABLE(spi, adc128_id);
Signature · 1 line
2.17.0
author
#2 lore raw

PATCH v2 2/3 iio: adc128s052: add ACPI _HID AANT1280

In reply to Javier Arteaga

From: Nicola Lunghi <[email protected]>

ACPI _HID AANT1280 matches an ADC124S101 present on E3940 SKUs of the UP Squared board.

Add it to the driver.

Signed-off-by Nicola Lunghi <[email protected]>
[[email protected]: fix up commit message and one checkpatch warning]
Signed-off-by Javier Arteaga <[email protected]>
---
 drivers/iio/adc/ti-adc128s052.c | 25 ++++++++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)
drivers/iio/adc/ti-adc128s052.c +24 -1
index e6716c326c5e..bc5096e98900 100644
@@ -12,6 +12,7 @@
  * published by the Free Software Foundation.
  */
 
+#include <linux/acpi.h>
 #include <linux/err.h>
 #include <linux/spi/spi.h>
 #include <linux/module.h>

@@ -136,9 +137,22 @@ static int adc128_probe(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev;
 	struct adc128 *adc;
-	int config = spi_get_device_id(spi)->driver_data;
+	int config;
 	int ret;
 
+	if (ACPI_COMPANION(&spi->dev)) {
+		const struct acpi_device_id *ad_id;
+
+		ad_id = acpi_match_device(spi->dev.driver->acpi_match_table,
+					  &spi->dev);
+		if (!ad_id)
+			return -ENODEV;
+
+		config = ad_id->driver_data;
+	} else {
+		config = spi_get_device_id(spi)->driver_data;
+	}
+
 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*adc));
 	if (!indio_dev)
 		return -ENOMEM;

@@ -207,10 +221,19 @@ static const struct spi_device_id adc128_id[] = {
 };
 MODULE_DEVICE_TABLE(spi, adc128_id);
 
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id adc128_acpi_match[] = {
+	{ "AANT1280", 2 }, /* ADC124S021 compatible ACPI ID */
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, adc128_acpi_match);
+#endif
+
 static struct spi_driver adc128_driver = {
 	.driver = {
 		.name = "adc128s052",
 		.of_match_table = of_match_ptr(adc128_of_match),
+		.acpi_match_table = ACPI_PTR(adc128_acpi_match),
 	},
 	.probe = adc128_probe,
 	.remove = adc128_remove,
Signature · 1 line
2.17.0
#3 lore raw

Re: [PATCH v2 2/3] iio: adc128s052: add ACPI _HID AANT1280

Quoted 7 lines · Javier Arteaga

From: Nicola Lunghi <[email protected]>

ACPI _HID AANT1280 matches an ADC124S101 present on E3940 SKUs of the UP Squared board.

Add it to the driver.

drivers/iio/adc/ti-adc128s052.c static int adc128_probe(struct spi_device *spi) · line 151

Quoted 10 lines
drivers/iio/adc/ti-adc128s052.c +9 -0
+       if (ACPI_COMPANION(&spi->dev)) {
 
+               const struct acpi_device_id *ad_id;
+
+               ad_id = acpi_match_device(spi->dev.driver->acpi_match_table,
+                                         &spi->dev);
+               if (!ad_id)
+                       return -ENODEV;
+
+               config = ad_id->driver_data;

There is a new API to get it by one call.
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git/commit/?id=b283f157611f129f5bbbf7d06f5af860d76797fd

Quoted 3 lines
drivers/iio/adc/ti-adc128s052.c +3 -0
+       } else {
+               config = spi_get_device_id(spi)->driver_data;
+       }
Signature · 2 lines
With Best Regards,
Andy Shevchenko
author
#4 lore raw

Re: [PATCH v2 2/3] iio: adc128s052: add ACPI _HID AANT1280

Hi Andy,

Quoted 13 lines · Andy Shevchenko

drivers/iio/adc/ti-adc128s052.c static int adc128_probe(struct spi_device *spi) · line 151

Quoted 10 lines
drivers/iio/adc/ti-adc128s052.c +9 -0
+       if (ACPI_COMPANION(&spi->dev)) {
 
+               const struct acpi_device_id *ad_id;
+
+               ad_id = acpi_match_device(spi->dev.driver->acpi_match_table,
+                                         &spi->dev);
+               if (!ad_id)
+                       return -ENODEV;
+
+               config = ad_id->driver_data;

There is a new API to get it by one call.
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git/commit/?id=b283f157611f129f5bbbf7d06f5af860d76797fd

That looks much cleaner. Will do for a v3.

Thank you!

author
#5 lore raw

PATCH v2 3/3 iio: adc128s052: reuse "compatible" for ACPI _DSD

In reply to Javier Arteaga

From: Dan O'Donovan <[email protected]>

Allow this driver to be ACPI matched by DT compatible string (through _DSD properties) when CONFIG_OF is disabled.

Signed-off-by Dan O'Donovan <[email protected]>
[[email protected]: edited the patch title and description]
Signed-off-by Javier Arteaga <[email protected]>
---
 drivers/iio/adc/ti-adc128s052.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
drivers/iio/adc/ti-adc128s052.c +1 -1
index bc5096e98900..c823929db784 100644
@@ -232,7 +232,7 @@ MODULE_DEVICE_TABLE(acpi, adc128_acpi_match);
 static struct spi_driver adc128_driver = {
 	.driver = {
 		.name = "adc128s052",
-		.of_match_table = of_match_ptr(adc128_of_match),
+		.of_match_table = adc128_of_match,
 		.acpi_match_table = ACPI_PTR(adc128_acpi_match),
 	},
 	.probe = adc128_probe,
Signature · 1 line
2.17.0
#6 lore raw

v3 cover iio: adc128s052: add matching options

In reply to Javier Arteaga

Hi all,

On some SKUs of AAEON's UP Squared board, there is an ADC124S101 enumerated via ACPI. This is a pin-compatible variant of ADC124S021, which is already supported by the adc128s052 driver.

This patchset adds missing DT compatible strings for ADC124S021 (and ADC122S021) variants, adds AAEON's allocated ACPI HID, and adds the SPDX GPL identifier to the driver.

v2 was posted at:
https://lore.kernel.org/lkml/[email protected]/

Changes from v2:
* Added device-tree bindings documentation for new chip variants
* Simplified code to get ACPI match data
* Dropped redundant patch to facilitate OF matching via ACPI _DSD
* Added patch to replace GPL license text with SPDX identifier

Changes from v1:
* Improved patch descriptions and series title
* Added an initial commit introducing new compatible strings (as per Jonathan's suggestion)
* Moved of_match_ptr removal last as this patch is less important to us

Dan O'Donovan (1):
iio: adc128s052: use SPDX-License-Identifier

Javier Arteaga (1):
iio: adc128s052: Add pin-compatible IDs

Nicola Lunghi (1):
iio: adc128s052: add ACPI _HID AANT1280

 .../devicetree/bindings/iio/adc/ti-adc128s052.txt  |  9 ++++-
 drivers/iio/adc/ti-adc128s052.c                    | 39 +++++++++++++++++-----
 2 files changed, 38 insertions(+), 10 deletions(-)
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#7 lore raw

PATCH v3 1/3 iio: adc128s052: Add pin-compatible IDs

From: Javier Arteaga <[email protected]>

The datasheets for ADC122S021 and ADC124S021 list two more pin-compatible alternatives for each device.

Add their IDs as compatible strings.

Suggested-by Jonathan Cameron <[email protected]>
Signed-off-by Javier Arteaga <[email protected]>
Signed-off-by Dan O'Donovan <[email protected]>
---
 .../devicetree/bindings/iio/adc/ti-adc128s052.txt        |  9 ++++++++-
 drivers/iio/adc/ti-adc128s052.c                          | 16 ++++++++++++----
 2 files changed, 20 insertions(+), 5 deletions(-)
Documentation/devicetree/bindings/iio/adc/ti-adc128s052.txt +8 -1
index daa2b2c..c07ce1a 100644
@@ -1,7 +1,14 @@
 * Texas Instruments' ADC128S052, ADC122S021 and ADC124S021 ADC chip
 
 Required properties:
- - compatible: Should be "ti,adc128s052", "ti,adc122s021" or "ti,adc124s021"
+ - compatible: Should be one of:
+   - "ti,adc128s052"
+   - "ti,adc122s021"
+   - "ti,adc122s051"
+   - "ti,adc122s101"
+   - "ti,adc124s021"
+   - "ti,adc124s051"
+   - "ti,adc124s101"
  - reg: spi chip select number for the device
  - vref-supply: The regulator supply for ADC reference voltage
drivers/iio/adc/ti-adc128s052.c +12 -4
index 7cf39b3..e6716c3 100644
@@ -186,15 +186,23 @@ static int adc128_remove(struct spi_device *spi)
 static const struct of_device_id adc128_of_match[] = {
 	{ .compatible = "ti,adc128s052", },
 	{ .compatible = "ti,adc122s021", },
+	{ .compatible = "ti,adc122s051", },
+	{ .compatible = "ti,adc122s101", },
 	{ .compatible = "ti,adc124s021", },
-	{ /* sentinel */ },
+	{ .compatible = "ti,adc124s051", },
+	{ .compatible = "ti,adc124s101", },
+	{ }
 };
 MODULE_DEVICE_TABLE(of, adc128_of_match);
 
 static const struct spi_device_id adc128_id[] = {
-	{ "adc128s052", 0},	/* index into adc128_config */
-	{ "adc122s021",	1},
-	{ "adc124s021", 2},
+	{ "adc128s052", 0 },	/* index into adc128_config */
+	{ "adc122s021",	1 },
+	{ "adc122s051",	1 },
+	{ "adc122s101",	1 },
+	{ "adc124s021", 2 },
+	{ "adc124s051", 2 },
+	{ "adc124s101", 2 },
 	{ }
 };
 MODULE_DEVICE_TABLE(spi, adc128_id);
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maintainer
#8 lore raw

Re: [PATCH v3 1/3] iio: adc128s052: Add pin-compatible IDs

Quoted 20 lines · On Thu, 25 Oct 2018 16:35:40 +0100 Dan O'Donovan <[email protected]> wrote:

From: Javier Arteaga <[email protected]>

The datasheets for ADC122S021 and ADC124S021 list two more pin-compatible alternatives for each device.

Add their IDs as compatible strings.

Suggested-by Jonathan Cameron <[email protected]>
Signed-off-by Javier Arteaga <[email protected]>
Signed-off-by Dan O'Donovan <[email protected]>
---
 .../devicetree/bindings/iio/adc/ti-adc128s052.txt        |  9 ++++++++-
 drivers/iio/adc/ti-adc128s052.c                          | 16 ++++++++++++----
 2 files changed, 20 insertions(+), 5 deletions(-)
Documentation/devicetree/bindings/iio/adc/ti-adc128s052.txt +0 -0
index daa2b2c..c07ce1a 100644

Documentation/devicetree/bindings/iio/adc/ti-adc128s052.txt line 5

Quoted 6 lines
Documentation/devicetree/bindings/iio/adc/ti-adc128s052.txt +2 -1
@@ -1,7 +1,14 @@
 * Texas Instruments' ADC128S052, ADC122S021 and ADC124S021 ADC chip
 
 Required properties:
- - compatible: Should be "ti,adc128s052", "ti,adc122s021" or "ti,adc124s021"
+ - compatible: Should be one of:
+   - "ti,adc128s052"

Hmm. Ideally I think these should be in 'alphabetical' order. However I can see a certain logic to having the part whose name we are using for the driver listed first..

Not important enough to change.

Quoted 14 lines
Documentation/devicetree/bindings/iio/adc/ti-adc128s052.txt +6 -0
+   - "ti,adc122s021"
+   - "ti,adc122s051"
+   - "ti,adc122s101"
+   - "ti,adc124s021"
+   - "ti,adc124s051"
+   - "ti,adc124s101"
  - reg: spi chip select number for the device
  - vref-supply: The regulator supply for ADC reference voltage
drivers/iio/adc/ti-adc128s052.c +0 -0
index 7cf39b3..e6716c3 100644

drivers/iio/adc/ti-adc128s052.c static int adc128_remove(struct spi_device *spi) · line 194

Quoted 10 lines
drivers/iio/adc/ti-adc128s052.c +5 -1
@@ -186,15 +186,23 @@ static int adc128_remove(struct spi_device *spi)
 static const struct of_device_id adc128_of_match[] = {
 	{ .compatible = "ti,adc128s052", },
 	{ .compatible = "ti,adc122s021", },
+	{ .compatible = "ti,adc122s051", },
+	{ .compatible = "ti,adc122s101", },
 	{ .compatible = "ti,adc124s021", },
-	{ /* sentinel */ },
+	{ .compatible = "ti,adc124s051", },
+	{ .compatible = "ti,adc124s101", },
+	{ }

Dropping then sentinel shouldn't have occurred in this patch. I don't really care if it is there or not personally but we shouldn't be making changes without clear benefit. I'll put it back.

Quoted 17 lines
drivers/iio/adc/ti-adc128s052.c +7 -3
 };
 MODULE_DEVICE_TABLE(of, adc128_of_match);
 
 static const struct spi_device_id adc128_id[] = {
-	{ "adc128s052", 0},	/* index into adc128_config */
-	{ "adc122s021",	1},
-	{ "adc124s021", 2},
+	{ "adc128s052", 0 },	/* index into adc128_config */
+	{ "adc122s021",	1 },
+	{ "adc122s051",	1 },
+	{ "adc122s101",	1 },
+	{ "adc124s021", 2 },
+	{ "adc124s051", 2 },
+	{ "adc124s101", 2 },
 	{ }
 };
 MODULE_DEVICE_TABLE(spi, adc128_id);
maintainer Reviewed-by on v3 1/3
#9 lore raw

Re: [PATCH v3 1/3] iio: adc128s052: Add pin-compatible IDs

In reply to Dan O'Donovan
Quoted 7 lines · Dan O'Donovan

From: Javier Arteaga <[email protected]>

The datasheets for ADC122S021 and ADC124S021 list two more pin-compatible alternatives for each device.

Add their IDs as compatible strings.

Quoted 8 lines
Suggested-by Jonathan Cameron <[email protected]>
Signed-off-by Javier Arteaga <[email protected]>
Signed-off-by Dan O'Donovan <[email protected]>
---
 .../devicetree/bindings/iio/adc/ti-adc128s052.txt        |  9 ++++++++-
 drivers/iio/adc/ti-adc128s052.c                          | 16 ++++++++++++----
 2 files changed, 20 insertions(+), 5 deletions(-)
Reviewed-by Rob Herring <[email protected]>
#10 lore raw

PATCH v3 2/3 iio: adc128s052: add ACPI _HID AANT1280

In reply to Dan O'Donovan

From: Nicola Lunghi <[email protected]>

ACPI _HID AANT1280 matches an ADC124S101 present on E3940 SKUs of the UP Squared board.

Add it to the driver.

Signed-off-by Nicola Lunghi <[email protected]>
[[email protected]: fix up commit message and one checkpatch warning]
Signed-off-by Javier Arteaga <[email protected]>
Signed-off-by Dan O'Donovan <[email protected]>
---
 drivers/iio/adc/ti-adc128s052.c | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)
drivers/iio/adc/ti-adc128s052.c +17 -1
index e6716c3..c2d1453 100644
@@ -12,10 +12,12 @@
  * published by the Free Software Foundation.
  */
 
+#include <linux/acpi.h>
 #include <linux/err.h>
 #include <linux/spi/spi.h>
 #include <linux/module.h>
 #include <linux/iio/iio.h>
+#include <linux/property.h>
 #include <linux/regulator/consumer.h>
 
 struct adc128_configuration {

@@ -135,10 +137,15 @@ static const struct iio_info adc128_info = {
 static int adc128_probe(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev;
+	unsigned int config;
 	struct adc128 *adc;
-	int config = spi_get_device_id(spi)->driver_data;
 	int ret;
 
+	if (dev_fwnode(&spi->dev))
+		config = (unsigned long) device_get_match_data(&spi->dev);
+	else
+		config = spi_get_device_id(spi)->driver_data;
+
 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*adc));
 	if (!indio_dev)
 		return -ENOMEM;

@@ -207,10 +214,19 @@ static const struct spi_device_id adc128_id[] = {
 };
 MODULE_DEVICE_TABLE(spi, adc128_id);
 
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id adc128_acpi_match[] = {
+	{ "AANT1280", 2 }, /* ADC124S021 compatible ACPI ID */
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, adc128_acpi_match);
+#endif
+
 static struct spi_driver adc128_driver = {
 	.driver = {
 		.name = "adc128s052",
 		.of_match_table = of_match_ptr(adc128_of_match),
+		.acpi_match_table = ACPI_PTR(adc128_acpi_match),
 	},
 	.probe = adc128_probe,
 	.remove = adc128_remove,
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#11 lore raw

Re: [PATCH v3 2/3] iio: adc128s052: add ACPI _HID AANT1280

Quoted 50 lines · Dan O'Donovan

From: Nicola Lunghi <[email protected]>

ACPI _HID AANT1280 matches an ADC124S101 present on E3940 SKUs of the UP Squared board.

Add it to the driver.

Signed-off-by Nicola Lunghi <[email protected]>
[[email protected]: fix up commit message and one checkpatch warning]
Signed-off-by Javier Arteaga <[email protected]>
Signed-off-by Dan O'Donovan <[email protected]>
---
 drivers/iio/adc/ti-adc128s052.c | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)
drivers/iio/adc/ti-adc128s052.c +8 -1
index e6716c3..c2d1453 100644
@@ -12,10 +12,12 @@
  * published by the Free Software Foundation.
  */
 
+#include <linux/acpi.h>
 #include <linux/err.h>
 #include <linux/spi/spi.h>
 #include <linux/module.h>
 #include <linux/iio/iio.h>
+#include <linux/property.h>
 #include <linux/regulator/consumer.h>
 
 struct adc128_configuration {

@@ -135,10 +137,15 @@ static const struct iio_info adc128_info = {
 static int adc128_probe(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev;
+	unsigned int config;
 	struct adc128 *adc;
-	int config = spi_get_device_id(spi)->driver_data;
 	int ret;
 
+	if (dev_fwnode(&spi->dev))
+		config = (unsigned long) device_get_match_data(&spi->dev);
+	else
+		config = spi_get_device_id(spi)->driver_data;
+
 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*adc));
 	if (!indio_dev)
 		return -ENOMEM;

drivers/iio/adc/ti-adc128s052.c static const struct spi_device_id adc128_id[] = { · line 220

Quoted 7 lines
drivers/iio/adc/ti-adc128s052.c +3 -0
@@ -207,10 +214,19 @@ static const struct spi_device_id adc128_id[] = {
 };
 MODULE_DEVICE_TABLE(spi, adc128_id);
 
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id adc128_acpi_match[] = {
 
+	{ "AANT1280", 2 }, /* ADC124S021 compatible ACPI ID */

Looking how driver is organized and what ACPI can provide I would highly recommend to look forward to PTYP field for utilization of the type of the HW.

Maybe it would not work with published BIOSes, but would be good for the future (in that case anybody can utilize that _HID + PTYP pair on their platforms).

Quoted 21 lines
drivers/iio/adc/ti-adc128s052.c +6 -0
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, adc128_acpi_match);
+#endif
+
 static struct spi_driver adc128_driver = {
 	.driver = {
 		.name = "adc128s052",
 
 		.of_match_table = of_match_ptr(adc128_of_match),
+		.acpi_match_table = ACPI_PTR(adc128_acpi_match),
 	},
drivers/iio/adc/ti-adc128s052.c +0 -0
 	.probe = adc128_probe,
 	.remove = adc128_remove,
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With Best Regards,
Andy Shevchenko
#12 lore raw

Re: [PATCH v3 2/3] iio: adc128s052: add ACPI _HID AANT1280

Quoted 57 lines · Andy Shevchenko
Quoted 55 lines · Dan O'Donovan

From: Nicola Lunghi <[email protected]>

ACPI _HID AANT1280 matches an ADC124S101 present on E3940 SKUs of the UP Squared board.

Add it to the driver.

Signed-off-by Nicola Lunghi <[email protected]>
[[email protected]: fix up commit message and one checkpatch warning]
Signed-off-by Javier Arteaga <[email protected]>
Signed-off-by Dan O'Donovan <[email protected]>
---
 drivers/iio/adc/ti-adc128s052.c | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)
drivers/iio/adc/ti-adc128s052.c +10 -1
index e6716c3..c2d1453 100644
@@ -12,10 +12,12 @@
  * published by the Free Software Foundation.
  */
 
+#include <linux/acpi.h>
 #include <linux/err.h>
 #include <linux/spi/spi.h>
 #include <linux/module.h>
 #include <linux/iio/iio.h>
+#include <linux/property.h>
 #include <linux/regulator/consumer.h>
 
 struct adc128_configuration {

@@ -135,10 +137,15 @@ static const struct iio_info adc128_info = {
 static int adc128_probe(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev;
+	unsigned int config;
 	struct adc128 *adc;
-	int config = spi_get_device_id(spi)->driver_data;
 	int ret;
 
+	if (dev_fwnode(&spi->dev))
+		config = (unsigned long) device_get_match_data(&spi->dev);
+	else
+		config = spi_get_device_id(spi)->driver_data;
+
 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*adc));
 	if (!indio_dev)
 		return -ENOMEM;

@@ -207,10 +214,19 @@ static const struct spi_device_id adc128_id[] = {
 };
 MODULE_DEVICE_TABLE(spi, adc128_id);
 
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id adc128_acpi_match[] = {
Quoted 8 lines

drivers/iio/adc/ti-adc128s052.c static const struct spi_device_id adc128_id[] = { · line 219

Quoted 1 line
drivers/iio/adc/ti-adc128s052.c +1 -0
+	{ "AANT1280", 2 }, /* ADC124S021 compatible ACPI ID */

Looking how driver is organized and what ACPI can provide I would highly recommend to look forward to PTYP field for utilization of the type of the HW.

Maybe it would not work with published BIOSes, but would be good for the future (in that case anybody can utilize that _HID + PTYP pair on their platforms).

Thanks Andy for your review and feedback. Your _HID + PTYP suggestion sounds interesting, but I couldn't find any information in the ACPI spec or elsewhere about how/when/where to use it. It isn't used in the UP Squared ACPI tables. Do you have any links or other information you could share about it? Thanks!

Quoted 18 lines
Quoted 18 lines
drivers/iio/adc/ti-adc128s052.c +6 -0
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, adc128_acpi_match);
+#endif
+
 static struct spi_driver adc128_driver = {
 	.driver = {
 		.name = "adc128s052",
 
 		.of_match_table = of_match_ptr(adc128_of_match),
+		.acpi_match_table = ACPI_PTR(adc128_acpi_match),
 	},
 	.probe = adc128_probe,

.remove = adc128_remove,

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Quoted 4 lines
Quoted 3 lines

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#13 lore raw

Re: [PATCH v3 2/3] iio: adc128s052: add ACPI _HID AANT1280

Quoted 8 lines · Dan O'Donovan
Quoted 6 lines · Andy Shevchenko

drivers/iio/adc/ti-adc128s052.c static const struct spi_device_id adc128_id[] = { · line 219

Quoted 1 line · Dan O'Donovan
drivers/iio/adc/ti-adc128s052.c +1 -0
+	{ "AANT1280", 2 }, /* ADC124S021 compatible ACPI ID */

Looking how driver is organized and what ACPI can provide I would highly recommend to look forward to PTYP field for utilization of the type of the HW.

Quoted 6 lines
Quoted 2 lines

Maybe it would not work with published BIOSes, but would be good for the future (in that case anybody can utilize that _HID + PTYP pair on their platforms).

Thanks Andy for your review and feedback. Your _HID + PTYP suggestion sounds interesting, but I couldn't find any information in the ACPI spec or elsewhere about how/when/where to use it.

I stand corrected, it's not in the spec, rather de facto use of it in some cases, see below.

Quoted 2 lines

It isn't used in the UP Squared ACPI tables.
Do you have any links or other information you could share about it? Thanks!

As far as I can find the following code in the kernel and thus real ACPI tables in the wild that utilize it.

drivers/acpi/dptf/dptf_power.c:84: status = acpi_evaluate_integer(acpi_dev->handle, "PTYP", NULL, &ptype);
drivers/platform/x86/intel_cht_int33fe.c:101: status = acpi_evaluate_integer(ACPI_HANDLE(dev), "PTYP", NULL, &ptyp);
drivers/thermal/int340x_thermal/int3403_thermal.c:237: status = acpi_evaluate_integer(priv->adev->handle, "PTYP",

Signature · 2 lines
With Best Regards,
Andy Shevchenko
#14 lore raw

Re: [PATCH v3 2/3] iio: adc128s052: add ACPI _HID AANT1280

In reply to Dan O'Donovan

Hi Dan,

Quoted 7 lines · Dan O'Donovan

From: Nicola Lunghi <[email protected]>

ACPI _HID AANT1280 matches an ADC124S101 present on E3940 SKUs of the UP Squared board.

Add it to the driver.

Quoted 7 lines
Signed-off-by Nicola Lunghi <[email protected]>
[[email protected]: fix up commit message and one checkpatch warning]
Signed-off-by Javier Arteaga <[email protected]>
Signed-off-by Dan O'Donovan <[email protected]>
---
 drivers/iio/adc/ti-adc128s052.c | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

[]

drivers/iio/adc/ti-adc128s052.c static const struct spi_device_id adc128_id[] = { · line 223

Quoted 7 lines
drivers/iio/adc/ti-adc128s052.c +7 -0
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id adc128_acpi_match[] = {
+	{ "AANT1280", 2 }, /* ADC124S021 compatible ACPI ID */
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, adc128_acpi_match);
+#endif

I'm curious about the naming conventions used for selecting an ACPI ID.

AFAIK, ACPI or PNP ID consists of *Vendor* ID + Product ID.

PNP ID: PNP Vendor IDs consist of 3 characters, each character being an uppercase letter (A-Z).

ACPI ID: ACPI Vendor IDs consist of 4 characters, each character being either an uppercase letter (A-Z) or a numeral (0-9).

In your case,

Vendor ID -> AANT (AAEON TECHNOLOGY INC. registered ACPI ID prefix)
http://www.uefi.org/ACPI_ID_List?search=AANT

Product ID -> 1280

How did you come up with 1280 ? And why AANT ? why not TXNW which is registered ACPI prefix for TEXAS INSTRUMENTS ?
http://www.uefi.org/ACPI_ID_List?search=Texas+

Latest ACPI manuals says:

6.1.5 _HID (Hardware ID)
------------------------

This object is used to supply OSPM with the device’s Plug and Play hardware ID.[1]

[1] "A Plug and Play ID or ACPI ID can be obtained by sending e-mail to [email protected]."

A _HID object evaluates to either a numeric 32-bit compressed EISA type ID or a string. If a string, the format must be an alphanumeric PNP or ACPI ID with no asterisk or other leading characters.

A valid PNP ID must be of the form "AAA####" where A is an uppercase letter and # is a hex digit. A valid ACPI ID must be of the form "NNNN####" where N is an uppercase letter or a digit ('0'-'9') and # is a hex digit. This specification reserves the string "ACPI" for use only with devices defined herein. It further reserves all strings representing 4 HEX digits for exclusive use with PCI-assigned Vendor IDs.

Next question:

There are a lot drivers in iio/ using ACPI for device enumeration using these IDs. For now, let's take an example of Bosch Sensors:

drivers/iio/accel/bmc150-accel-i2c.c:static const struct acpi_device_id bmc150_accel_acpi_match[] = {

drivers/iio/accel/bmc150-accel-i2c.c-   {"BSBA0150",    bmc150},
drivers/iio/accel/bmc150-accel-i2c.c-   {"BMC150A",     bmc150},
drivers/iio/accel/bmc150-accel-i2c.c-   {"BMI055A",     bmi055},
drivers/iio/accel/bmc150-accel-i2c.c-   {"BMA0255",     bma255},

drivers/iio/gyro/bmg160_i2c.c:static const struct acpi_device_id bmg160_acpi_match[] = {

drivers/iio/gyro/bmg160_i2c.c-  {"BMG0160", 0},
drivers/iio/gyro/bmg160_i2c.c-  {"BMI055B", 0},
drivers/iio/gyro/bmg160_i2c.c-  {},

drivers/iio/gyro/bmg160_i2c.c-};

drivers/iio/imu/bmi160/bmi160_i2c.c:static const struct acpi_device_id bmi160_acpi_match[] = {
drivers/iio/imu/bmi160/bmi160_i2c.c- {"BMI0160", 0},
drivers/iio/imu/bmi160/bmi160_i2c.c- { },
drivers/iio/imu/bmi160/bmi160_i2c.c-}; drivers/iio/imu/bmi160/bmi160_i2c.c-MODULE_DEVICE_TABLE(acpi, bmi160_acpi_match);

Bosch registered ACPI ID: BOSC
http://www.uefi.org/ACPI_ID_List?search=Bosch

Bosch registered PNP ID: BSG
http://www.uefi.org/PNP_ID_List?search=Bosch

So, how could we use PNP ID "BMI" which is registered prefix for BENSON MEDICAL INSTRUMENTS COMPANY ?
http://www.uefi.org/PNP_ID_List?search=BMI

Product ID -> "160" is fine for bmi160 which uniquely identifies the sensor device.

But shouldn't the prefix be "BSG0160" instead of "BMI0160" ?

When I wrote the driver for Bosch BME680, I followed the same guideline as done everywhere else in the Bosch family:

drivers/iio/pressure/bmp280-i2c.c-      {"BMP0280", BMP280_CHIP_ID },
drivers/iio/pressure/bmp280-i2c.c-      {"BMP0180", BMP180_CHIP_ID },
drivers/iio/pressure/bmp280-i2c.c-      {"BMP0085", BMP180_CHIP_ID },
drivers/iio/pressure/bmp280-i2c.c-      {"BME0280", BME280_CHIP_ID },

Therefore, I used BME0680 for bosch bme680 sensor!

In OF matching, we use vendor prefixes and that looks more legimate:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/Documentation/devicetree/bindings/vendor-prefixes.txt

Dan,

These questions are not just for you but to rest of the community members as well.

If there is something I misunderstood, then please let me know :)

Thanks

Signature · 4 lines
Himanshu Jha
Undergraduate Student
Department of Electronics & Communication
Guru Tegh Bahadur Institute of Technology
maintainer
#15 lore raw

Re: [PATCH v3 2/3] iio: adc128s052: add ACPI _HID AANT1280

Quoted 41 lines · On Sat, 27 Oct 2018 22:44:28 +0530 Himanshu Jha <[email protected]>…

Hi Dan,

Quoted 7 lines · Dan O'Donovan

From: Nicola Lunghi <[email protected]>

ACPI _HID AANT1280 matches an ADC124S101 present on E3940 SKUs of the UP Squared board.

Add it to the driver.

Quoted 7 lines
Signed-off-by Nicola Lunghi <[email protected]>
[[email protected]: fix up commit message and one checkpatch warning]
Signed-off-by Javier Arteaga <[email protected]>
Signed-off-by Dan O'Donovan <[email protected]>
---
 drivers/iio/adc/ti-adc128s052.c | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

[]

drivers/iio/adc/ti-adc128s052.c static const struct spi_device_id adc128_id[] = { · line 223

Quoted 7 lines
drivers/iio/adc/ti-adc128s052.c +7 -0
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id adc128_acpi_match[] = {
+	{ "AANT1280", 2 }, /* ADC124S021 compatible ACPI ID */
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, adc128_acpi_match);
+#endif

I'm curious about the naming conventions used for selecting an ACPI ID.

AFAIK, ACPI or PNP ID consists of *Vendor* ID + Product ID.

PNP ID: PNP Vendor IDs consist of 3 characters, each character being an uppercase letter (A-Z).

ACPI ID: ACPI Vendor IDs consist of 4 characters, each character being either an uppercase letter (A-Z) or a numeral (0-9).

In your case,

Quoted 8 lines

Vendor ID -> AANT (AAEON TECHNOLOGY INC. registered ACPI ID prefix)
http://www.uefi.org/ACPI_ID_List?search=AANT

Product ID -> 1280

How did you come up with 1280 ? And why AANT ? why not TXNW which is registered ACPI prefix for TEXAS INSTRUMENTS ?
http://www.uefi.org/ACPI_ID_List?search=Texas+

Simple answer to that:

TI don't (as far as I know) publish defined ID spaces so no one can use their ID without risking stepping on an ID in use by someone else. I would assume there is an AAEON module on this board (pretty common for embedded boards) so they have assigned an ID from their namespace as they can know it doesn't clash with anyone else.

Quoted 74 lines

Latest ACPI manuals says:

6.1.5 _HID (Hardware ID)
------------------------

This object is used to supply OSPM with the device’s Plug and Play hardware ID.[1]

[1] "A Plug and Play ID or ACPI ID can be obtained by sending e-mail to [email protected]."

A _HID object evaluates to either a numeric 32-bit compressed EISA type ID or a string. If a string, the format must be an alphanumeric PNP or ACPI ID with no asterisk or other leading characters.

A valid PNP ID must be of the form "AAA####" where A is an uppercase letter and # is a hex digit. A valid ACPI ID must be of the form "NNNN####" where N is an uppercase letter or a digit ('0'-'9') and # is a hex digit. This specification reserves the string "ACPI" for use only with devices defined herein. It further reserves all strings representing 4 HEX digits for exclusive use with PCI-assigned Vendor IDs.

Next question:

There are a lot drivers in iio/ using ACPI for device enumeration using these IDs. For now, let's take an example of Bosch Sensors:

drivers/iio/accel/bmc150-accel-i2c.c:static const struct acpi_device_id bmc150_accel_acpi_match[] = {

drivers/iio/accel/bmc150-accel-i2c.c-   {"BSBA0150",    bmc150},
drivers/iio/accel/bmc150-accel-i2c.c-   {"BMC150A",     bmc150},
drivers/iio/accel/bmc150-accel-i2c.c-   {"BMI055A",     bmi055},
drivers/iio/accel/bmc150-accel-i2c.c-   {"BMA0255",     bma255},

drivers/iio/gyro/bmg160_i2c.c:static const struct acpi_device_id bmg160_acpi_match[] = {

drivers/iio/gyro/bmg160_i2c.c-  {"BMG0160", 0},
drivers/iio/gyro/bmg160_i2c.c-  {"BMI055B", 0},
drivers/iio/gyro/bmg160_i2c.c-  {},

drivers/iio/gyro/bmg160_i2c.c-};

drivers/iio/imu/bmi160/bmi160_i2c.c:static const struct acpi_device_id bmi160_acpi_match[] = {
drivers/iio/imu/bmi160/bmi160_i2c.c- {"BMI0160", 0},
drivers/iio/imu/bmi160/bmi160_i2c.c- { },
drivers/iio/imu/bmi160/bmi160_i2c.c-}; drivers/iio/imu/bmi160/bmi160_i2c.c-MODULE_DEVICE_TABLE(acpi, bmi160_acpi_match);

Bosch registered ACPI ID: BOSC
http://www.uefi.org/ACPI_ID_List?search=Bosch

Bosch registered PNP ID: BSG
http://www.uefi.org/PNP_ID_List?search=Bosch

So, how could we use PNP ID "BMI" which is registered prefix for BENSON MEDICAL INSTRUMENTS COMPANY ?
http://www.uefi.org/PNP_ID_List?search=BMI

Product ID -> "160" is fine for bmi160 which uniquely identifies the sensor device.

But shouldn't the prefix be "BSG0160" instead of "BMI0160" ?

When I wrote the driver for Bosch BME680, I followed the same guideline as done everywhere else in the Bosch family:

drivers/iio/pressure/bmp280-i2c.c-      {"BMP0280", BMP280_CHIP_ID },
drivers/iio/pressure/bmp280-i2c.c-      {"BMP0180", BMP180_CHIP_ID },
drivers/iio/pressure/bmp280-i2c.c-      {"BMP0085", BMP180_CHIP_ID },
drivers/iio/pressure/bmp280-i2c.c-      {"BME0280", BME280_CHIP_ID },

Therefore, I used BME0680 for bosch bme680 sensor!

In OF matching, we use vendor prefixes and that looks more legimate:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/Documentation/devicetree/bindings/vendor-prefixes.txt

Quoted 6 lines

Dan,

These questions are not just for you but to rest of the community members as well.

If there is something I misunderstood, then please let me know :)

The sad truth is that for ACPI things aren't really governed by the spec, but rather by what people put in bios tables.

Now, I know is some cases the ID has been assigned pretty much to provide an easy way to test the device as there are no known IDs in use for the part. In those cases we should be a little careful and it would be nice to keep to the spec. If companies actually published a canonical list of their ID usage it would certainly make this nicer. I have access to the Hisilicon list for example, but it's not (as far as I know) public.

Some of the more random IDs are real ones found in the wild (such as the one in this case). Reality of a lot of these parts is that we will never get them to fix the Bios.

I can rock up at an ACPI WG meeting and rant about it (mostly I don't as they are in the middle of the night UK time) but in reality the smaller companies don't have anyone attending so it wouldn't help much.

One thing we could do perhaps is start recording as comments, boards on which a particular ID is found, or when we know it is the suggested value from the manufacturer of a device.

Jonathan

P.S Technically I'm a member of the ASWG part of UEFI who is responsible for that standard (on behalf of Huawei, though I never actually attend as the call are in the middle of the night), but there are only so many things one can try to solve + to be honest inconsistent namespaces don't really hurt anyone other than requiring additional IDs to be added when a new one shows up in the wild.

Quoted 3 lines

Thanks

maintainer
#16 lore raw

Re: [PATCH v3 2/3] iio: adc128s052: add ACPI _HID AANT1280

In reply to Dan O'Donovan
Quoted 11 lines · On Thu, 25 Oct 2018 16:35:41 +0100 Dan O'Donovan <[email protected]> wrote:

From: Nicola Lunghi <[email protected]>

ACPI _HID AANT1280 matches an ADC124S101 present on E3940 SKUs of the UP Squared board.

Add it to the driver.

Signed-off-by Nicola Lunghi <[email protected]>
[[email protected]: fix up commit message and one checkpatch warning]
Signed-off-by Javier Arteaga <[email protected]>
Signed-off-by Dan O'Donovan <[email protected]>

Applied to the togreg branch of iio.git and pushed out as testing for the autobuilders to play with it.

Thanks,

Jonathan

Quoted 58 lines
---
 drivers/iio/adc/ti-adc128s052.c | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)
drivers/iio/adc/ti-adc128s052.c +17 -1
index e6716c3..c2d1453 100644
@@ -12,10 +12,12 @@
  * published by the Free Software Foundation.
  */
 
+#include <linux/acpi.h>
 #include <linux/err.h>
 #include <linux/spi/spi.h>
 #include <linux/module.h>
 #include <linux/iio/iio.h>
+#include <linux/property.h>
 #include <linux/regulator/consumer.h>
 
 struct adc128_configuration {

@@ -135,10 +137,15 @@ static const struct iio_info adc128_info = {
 static int adc128_probe(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev;
+	unsigned int config;
 	struct adc128 *adc;
-	int config = spi_get_device_id(spi)->driver_data;
 	int ret;
 
+	if (dev_fwnode(&spi->dev))
+		config = (unsigned long) device_get_match_data(&spi->dev);
+	else
+		config = spi_get_device_id(spi)->driver_data;
+
 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*adc));
 	if (!indio_dev)
 		return -ENOMEM;

@@ -207,10 +214,19 @@ static const struct spi_device_id adc128_id[] = {
 };
 MODULE_DEVICE_TABLE(spi, adc128_id);
 
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id adc128_acpi_match[] = {
+	{ "AANT1280", 2 }, /* ADC124S021 compatible ACPI ID */
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, adc128_acpi_match);
+#endif
+
 static struct spi_driver adc128_driver = {
 	.driver = {
 		.name = "adc128s052",
 		.of_match_table = of_match_ptr(adc128_of_match),
+		.acpi_match_table = ACPI_PTR(adc128_acpi_match),
 	},
 	.probe = adc128_probe,
 	.remove = adc128_remove,
#17 lore raw

PATCH v3 3/3 iio: adc128s052: use SPDX-License-Identifier

In reply to Dan O'Donovan

This updates the ti-adc128s052.c file to use SPDX-License-Identifier instead of more verbose license text.

Signed-off-by Dan O'Donovan <[email protected]>
---
 drivers/iio/adc/ti-adc128s052.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)
drivers/iio/adc/ti-adc128s052.c +1 -4
index c2d1453..7d2861f 100644
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2014 Angelo Compagnucci <[email protected]>
  *

@@ -6,10 +7,6 @@
  * http://www.ti.com/lit/ds/symlink/adc128s052.pdf
  * http://www.ti.com/lit/ds/symlink/adc122s021.pdf
  * http://www.ti.com/lit/ds/symlink/adc124s021.pdf
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 
 #include <linux/acpi.h>
Signature · 5 lines
2.7.4


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maintainer Applied
#18 lore raw

Re: [PATCH v3 3/3] iio: adc128s052: use SPDX-License-Identifier

Quoted 4 lines · On Thu, 25 Oct 2018 16:35:42 +0100 Dan O'Donovan <[email protected]> wrote:

This updates the ti-adc128s052.c file to use SPDX-License-Identifier instead of more verbose license text.

Signed-off-by Dan O'Donovan <[email protected]>

Applied,

Thanks,

Jonathan

Quoted 24 lines
---
 drivers/iio/adc/ti-adc128s052.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)
drivers/iio/adc/ti-adc128s052.c +1 -4
index c2d1453..7d2861f 100644
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2014 Angelo Compagnucci <[email protected]>
  *

@@ -6,10 +7,6 @@
  * http://www.ti.com/lit/ds/symlink/adc128s052.pdf
  * http://www.ti.com/lit/ds/symlink/adc122s021.pdf
  * http://www.ti.com/lit/ds/symlink/adc124s021.pdf
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 
 #include <linux/acpi.h>
Reviewed-by on the v3 series
#19 lore raw
In reply to Dan O'Donovan
Quoted 6 lines · Dan O'Donovan

Hi all,

On some SKUs of AAEON's UP Squared board, there is an ADC124S101 enumerated via ACPI. This is a pin-compatible variant of ADC124S021, which is already supported by the adc128s052 driver.

Quoted 6 lines

This patchset adds missing DT compatible strings for ADC124S021 (and ADC122S021) variants, adds AAEON's allocated ACPI HID, and adds the SPDX GPL identifier to the driver.

v2 was posted at:
https://lore.kernel.org/lkml/[email protected]/

Overall LGTM

Reviewed-by Andy Shevchenko <[email protected]>
Quoted 33 lines

Changes from v2:
* Added device-tree bindings documentation for new chip variants
* Simplified code to get ACPI match data
* Dropped redundant patch to facilitate OF matching via ACPI _DSD
* Added patch to replace GPL license text with SPDX identifier

Changes from v1:
* Improved patch descriptions and series title
* Added an initial commit introducing new compatible strings (as per Jonathan's suggestion)
* Moved of_match_ptr removal last as this patch is less important to us

Dan O'Donovan (1):
iio: adc128s052: use SPDX-License-Identifier

Javier Arteaga (1):
iio: adc128s052: Add pin-compatible IDs

Nicola Lunghi (1):
iio: adc128s052: add ACPI _HID AANT1280

 .../devicetree/bindings/iio/adc/ti-adc128s052.txt  |  9 ++++-
 drivers/iio/adc/ti-adc128s052.c                    | 39 +++++++++++++++++-----
 2 files changed, 38 insertions(+), 10 deletions(-)
Signature · 5 lines
2.7.4


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Signature · 2 lines
With Best Regards,
Andy Shevchenko