Re: [PATCH v3 1/5] iio: adc: ad7192: Use device api

Re: [PATCH v3 1/5] iio: adc: ad7192: Use device api

[Andy Shevchenko]

Subject should be:

  iio: adc: ad7192: Use device property APIs

On Thu, Feb 08, 2024 at 07:24:55PM +0200, Alisa-Dariana Roman wrote:
> Replace of.h and corresponding functions with preferred device specific
> functions.
> 
> Also replace of_device_get_match_data() with
> spi_get_device_match_data().

...

>  #include <linux/err.h>
>  #include <linux/sched.h>
>  #include <linux/delay.h>
> -#include <linux/of.h>

Actually this has to be replaced by property.h (placed somewhere before
slab.h).

-- 
With Best Regards,
Andy Shevchenko

[PATCH v3 0/5] iio: adc: ad7192: Add support for AD7194

[Alisa-Dariana Roman]

Dear maintainers,

Thank you all for the feedback!

I am submitting the upgraded series of patches for the ad7192 driver.

Please consider applying in order.

Note that I dropped the patch related to the clock bindings. I will be
back with another series of patches related to the clock.

Thank you!

v2 -> v3
	- add precursor patch to simply functions to only pass
	  ad7192_state
	- add patch to replace custom attribute
	- bindings patch: correct use of allOf and some minor changes to
	  the ad7194 example
	- add ad7194 patch:
		- use "ad7192 and similar"
		- ad7194 no longer needs attribute group
		- use callback function in chip_info to parse channels
		- move struct ad7192_chip_info
		- change position of parse functions
	- drop clock bindings patch

v1 -> v2
	- new commit with missing documentation for properties
	- add constraint for channels in binding
	- correct pattern for channels
	- correct commit message by adding "()" to functions
	- use in_range
	- use preferred structure in Kconfig

Kind regards,

Alisa-Dariana Roman (5):
  iio: adc: ad7192: Use device api
  iio: adc: ad7192: Pass state directly
  iio: adc: ad7192: Use standard attribute
  dt-bindings: iio: adc: ad7192: Add AD7194 support
  iio: adc: ad7192: Add AD7194 support

 .../bindings/iio/adc/adi,ad7192.yaml          |  75 ++++++
 drivers/iio/adc/Kconfig                       |  11 +-
 drivers/iio/adc/ad7192.c                      | 252 +++++++++++++-----
 3 files changed, 269 insertions(+), 69 deletions(-)

-- 
2.34.1

[PATCH v3 1/5] iio: adc: ad7192: Use device api

[Alisa-Dariana Roman]

Replace of.h and corresponding functions with preferred device specific
functions.

Also replace of_device_get_match_data() with
spi_get_device_match_data().

Signed-off-by: Alisa-Dariana Roman <alisa.roman@analog.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
---
 drivers/iio/adc/ad7192.c | 32 +++++++++++++++-----------------
 1 file changed, 15 insertions(+), 17 deletions(-)

diff --git a/drivers/iio/adc/ad7192.c b/drivers/iio/adc/ad7192.c
index adc3cbe92d6e..48e0357564af 100644
--- a/drivers/iio/adc/ad7192.c
+++ b/drivers/iio/adc/ad7192.c
@@ -17,7 +17,6 @@
 #include <linux/err.h>
 #include <linux/sched.h>
 #include <linux/delay.h>
-#include <linux/of.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
@@ -364,19 +363,19 @@ static inline bool ad7192_valid_external_frequency(u32 freq)
 		freq <= AD7192_EXT_FREQ_MHZ_MAX);
 }
 
-static int ad7192_of_clock_select(struct ad7192_state *st)
+static int ad7192_device_clock_select(struct ad7192_state *st)
 {
-	struct device_node *np = st->sd.spi->dev.of_node;
+	struct device *dev = &st->sd.spi->dev;
 	unsigned int clock_sel;
 
 	clock_sel = AD7192_CLK_INT;
 
 	/* use internal clock */
 	if (!st->mclk) {
-		if (of_property_read_bool(np, "adi,int-clock-output-enable"))
+		if (device_property_read_bool(dev, "adi,int-clock-output-enable"))
 			clock_sel = AD7192_CLK_INT_CO;
 	} else {
-		if (of_property_read_bool(np, "adi,clock-xtal"))
+		if (device_property_read_bool(dev, "adi,clock-xtal"))
 			clock_sel = AD7192_CLK_EXT_MCLK1_2;
 		else
 			clock_sel = AD7192_CLK_EXT_MCLK2;
@@ -385,9 +384,10 @@ static int ad7192_of_clock_select(struct ad7192_state *st)
 	return clock_sel;
 }
 
-static int ad7192_setup(struct iio_dev *indio_dev, struct device_node *np)
+static int ad7192_setup(struct iio_dev *indio_dev)
 {
 	struct ad7192_state *st = iio_priv(indio_dev);
+	struct device *dev = &st->sd.spi->dev;
 	bool rej60_en, refin2_en;
 	bool buf_en, bipolar, burnout_curr_en;
 	unsigned long long scale_uv;
@@ -416,26 +416,26 @@ static int ad7192_setup(struct iio_dev *indio_dev, struct device_node *np)
 
 	st->conf = FIELD_PREP(AD7192_CONF_GAIN_MASK, 0);
 
-	rej60_en = of_property_read_bool(np, "adi,rejection-60-Hz-enable");
+	rej60_en = device_property_read_bool(dev, "adi,rejection-60-Hz-enable");
 	if (rej60_en)
 		st->mode |= AD7192_MODE_REJ60;
 
-	refin2_en = of_property_read_bool(np, "adi,refin2-pins-enable");
+	refin2_en = device_property_read_bool(dev, "adi,refin2-pins-enable");
 	if (refin2_en && st->chip_info->chip_id != CHIPID_AD7195)
 		st->conf |= AD7192_CONF_REFSEL;
 
 	st->conf &= ~AD7192_CONF_CHOP;
 
-	buf_en = of_property_read_bool(np, "adi,buffer-enable");
+	buf_en = device_property_read_bool(dev, "adi,buffer-enable");
 	if (buf_en)
 		st->conf |= AD7192_CONF_BUF;
 
-	bipolar = of_property_read_bool(np, "bipolar");
+	bipolar = device_property_read_bool(dev, "bipolar");
 	if (!bipolar)
 		st->conf |= AD7192_CONF_UNIPOLAR;
 
-	burnout_curr_en = of_property_read_bool(np,
-						"adi,burnout-currents-enable");
+	burnout_curr_en =
+		device_property_read_bool(dev, "adi,burnout-currents-enable");
 	if (burnout_curr_en && buf_en) {
 		st->conf |= AD7192_CONF_BURN;
 	} else if (burnout_curr_en) {
@@ -1117,9 +1117,7 @@ static int ad7192_probe(struct spi_device *spi)
 	}
 	st->int_vref_mv = ret / 1000;
 
-	st->chip_info = of_device_get_match_data(&spi->dev);
-	if (!st->chip_info)
-		st->chip_info = (void *)spi_get_device_id(spi)->driver_data;
+	st->chip_info = spi_get_device_match_data(spi);
 	indio_dev->name = st->chip_info->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = st->chip_info->channels;
@@ -1140,7 +1138,7 @@ static int ad7192_probe(struct spi_device *spi)
 	if (IS_ERR(st->mclk))
 		return PTR_ERR(st->mclk);
 
-	st->clock_sel = ad7192_of_clock_select(st);
+	st->clock_sel = ad7192_device_clock_select(st);
 
 	if (st->clock_sel == AD7192_CLK_EXT_MCLK1_2 ||
 	    st->clock_sel == AD7192_CLK_EXT_MCLK2) {
@@ -1152,7 +1150,7 @@ static int ad7192_probe(struct spi_device *spi)
 		}
 	}
 
-	ret = ad7192_setup(indio_dev, spi->dev.of_node);
+	ret = ad7192_setup(indio_dev);
 	if (ret)
 		return ret;
 
-- 
2.34.1

Re: [PATCH v3 1/5] iio: adc: ad7192: Use device api

[Andy Shevchenko]

Subject should be:

  iio: adc: ad7192: Use device property APIs

On Thu, Feb 08, 2024 at 07:24:55PM +0200, Alisa-Dariana Roman wrote:
> Replace of.h and corresponding functions with preferred device specific
> functions.
> 
> Also replace of_device_get_match_data() with
> spi_get_device_match_data().

...

>  #include <linux/err.h>
>  #include <linux/sched.h>
>  #include <linux/delay.h>
> -#include <linux/of.h>

Actually this has to be replaced by property.h (placed somewhere before
slab.h).

-- 
With Best Regards,
Andy Shevchenko