All of lore.kernel.org
 help / color / mirror / Atom feed
From: Jonathan Cameron <jic23@kernel.org>
To: linux-iio@vger.kernel.org, Rob Herring <robh+dt@kernel.org>
Cc: Michael.Hennerich@analog.com, lars@metafoo.de,
	devicetree@vger.kernel.org, Nuno Sa <Nuno.Sa@analog.com>,
	Jonathan Cameron <Jonathan.Cameron@huawei.com>
Subject: [PATCH 12/17] staging:iio:ad7280a: Reflect optionality of irq in ABI
Date: Mon, 14 Jun 2021 12:35:02 +0100	[thread overview]
Message-ID: <20210614113507.897732-13-jic23@kernel.org> (raw)
In-Reply-To: <20210614113507.897732-1-jic23@kernel.org>

From: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Given the irq is optional, let us remove the interfaces related to
events when it is not present.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
 drivers/staging/iio/adc/ad7280a.c | 48 +++++++++++++++++++------------
 1 file changed, 29 insertions(+), 19 deletions(-)

diff --git a/drivers/staging/iio/adc/ad7280a.c b/drivers/staging/iio/adc/ad7280a.c
index 7f9e2276e41a..b4ba6da07af9 100644
--- a/drivers/staging/iio/adc/ad7280a.c
+++ b/drivers/staging/iio/adc/ad7280a.c
@@ -579,23 +579,29 @@ static const struct iio_event_spec ad7280_events[] = {
 	},
 };
 
-static void ad7280_voltage_channel_init(struct iio_chan_spec *chan, int i)
+static void ad7280_voltage_channel_init(struct iio_chan_spec *chan, int i,
+					bool irq_present)
 {
 	chan->type = IIO_VOLTAGE;
 	chan->differential = 1;
 	chan->channel = i;
 	chan->channel2 = chan->channel + 1;
-	chan->event_spec = ad7280_events;
-	chan->num_event_specs = ARRAY_SIZE(ad7280_events);
+	if (irq_present) {
+		chan->event_spec = ad7280_events;
+		chan->num_event_specs = ARRAY_SIZE(ad7280_events);
+	}
 	chan->ext_info = ad7280_cell_ext_info;
 }
 
-static void ad7280_temp_channel_init(struct iio_chan_spec *chan, int i)
+static void ad7280_temp_channel_init(struct iio_chan_spec *chan, int i,
+				     bool irq_present)
 {
 	chan->type = IIO_TEMP;
 	chan->channel = i;
-	chan->event_spec = ad7280_events;
-	chan->num_event_specs = ARRAY_SIZE(ad7280_events);
+	if (irq_present) {
+		chan->event_spec = ad7280_events;
+		chan->num_event_specs = ARRAY_SIZE(ad7280_events);
+	}
 }
 
 static void ad7280_common_fields_init(struct iio_chan_spec *chan, int addr,
@@ -629,7 +635,8 @@ static void ad7280_total_voltage_channel_init(struct iio_chan_spec *chan,
 	chan->scan_type.storagebits = 32;
 }
 
-static void ad7280_init_dev_channels(struct ad7280_state *st, int dev, int *cnt)
+static void ad7280_init_dev_channels(struct ad7280_state *st, int dev, int *cnt,
+				     bool irq_present)
 {
 	int addr, ch, i;
 	struct iio_chan_spec *chan;
@@ -639,10 +646,10 @@ static void ad7280_init_dev_channels(struct ad7280_state *st, int dev, int *cnt)
 
 		if (ch < AD7280A_AUX_ADC_1_REG) {
 			i = AD7280A_CALC_VOLTAGE_CHAN_NUM(dev, ch);
-			ad7280_voltage_channel_init(chan, i);
+			ad7280_voltage_channel_init(chan, i, irq_present);
 		} else {
 			i = AD7280A_CALC_TEMP_CHAN_NUM(dev, ch);
-			ad7280_temp_channel_init(chan, i);
+			ad7280_temp_channel_init(chan, i, irq_present);
 		}
 
 		addr = ad7280a_devaddr(dev) << 8 | ch;
@@ -652,7 +659,7 @@ static void ad7280_init_dev_channels(struct ad7280_state *st, int dev, int *cnt)
 	}
 }
 
-static int ad7280_channel_init(struct ad7280_state *st)
+static int ad7280_channel_init(struct ad7280_state *st, bool irq_present)
 {
 	int dev, cnt = 0;
 
@@ -662,7 +669,7 @@ static int ad7280_channel_init(struct ad7280_state *st)
 		return -ENOMEM;
 
 	for (dev = 0; dev <= st->slave_num; dev++)
-		ad7280_init_dev_channels(st, dev, &cnt);
+		ad7280_init_dev_channels(st, dev, &cnt, irq_present);
 
 	ad7280_total_voltage_channel_init(&st->channels[cnt], cnt, dev);
 
@@ -920,6 +927,11 @@ static const struct iio_info ad7280_info = {
 	.write_event_value = &ad7280a_write_thresh,
 };
 
+static const struct iio_info ad7280_info_no_irq = {
+	.read_event_value = &ad7280a_read_thresh,
+	.write_event_value = &ad7280a_write_thresh,
+};
+
 static const struct ad7280_platform_data ad7793_default_pdata = {
 	.acquisition_time = AD7280A_ACQ_TIME_400ns,
 	.thermistor_term_en = true,
@@ -973,18 +985,12 @@ static int ad7280_probe(struct spi_device *spi)
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	ret = ad7280_channel_init(st);
+	ret = ad7280_channel_init(st, spi->irq > 0);
 	if (ret < 0)
 		return ret;
 
 	indio_dev->num_channels = ret;
 	indio_dev->channels = st->channels;
-	indio_dev->info = &ad7280_info;
-
-	ret = devm_iio_device_register(&spi->dev, indio_dev);
-	if (ret)
-		return ret;
-
 	if (spi->irq > 0) {
 		ret = ad7280_write(st, AD7280A_DEVADDR_MASTER,
 				   AD7280A_ALERT_REG, 1,
@@ -1008,9 +1014,13 @@ static int ad7280_probe(struct spi_device *spi)
 						indio_dev);
 		if (ret)
 			return ret;
+
+		indio_dev->info = &ad7280_info;
+	} else {
+		indio_dev->info = &ad7280_info_no_irq;
 	}
 
-	return 0;
+	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
 static const struct spi_device_id ad7280_id[] = {
-- 
2.32.0


  parent reply	other threads:[~2021-06-14 11:39 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-14 11:34 [PATCH 00/17] iio:adc:ad7280a Cleanup and proposed staging graduation Jonathan Cameron
2021-06-14 11:34 ` [PATCH 01/17] staging:iio:adc:ad7280a: Fix handing of device address bit reversing Jonathan Cameron
2021-06-14 11:34 ` [PATCH 02/17] staging:iio:adc:ad7280a: Register define cleanup Jonathan Cameron
2021-06-14 11:34 ` [PATCH 03/17] staging:iio:adc:ad7280a: rename _read() to _read_reg() Jonathan Cameron
2021-06-14 11:34 ` [PATCH 04/17] staging:iio:adc:ad7280a: Split buff[2] into tx and rx parts Jonathan Cameron
2021-06-14 11:34 ` [PATCH 05/17] staging:iio:adc:ad7280a: Use bitfield ops to managed fields in transfers Jonathan Cameron
2021-06-14 11:34 ` [PATCH 06/17] staging:iio:adc:ad7280a: Switch to standard event control Jonathan Cameron
2021-06-14 11:34 ` [PATCH 07/17] staging:iio:adc:ad7280a: Standardize extended ABI naming Jonathan Cameron
2021-06-14 11:34 ` [PATCH 08/17] staging:iio:adc:ad7280a: Drop unused timestamp channel Jonathan Cameron
2021-06-14 11:34 ` [PATCH 09/17] staging:iio:adc:ad7280a: Trivial comment formatting cleanup Jonathan Cameron
2021-06-14 11:35 ` [PATCH 10/17] staging:iio:adc:ad7280a: Make oversampling_ratio a runtime control Jonathan Cameron
2021-06-14 11:35 ` [PATCH 11/17] staging:iio:adc:ad7280a: Cleanup includes Jonathan Cameron
2021-06-14 11:35 ` Jonathan Cameron [this message]
2021-06-14 11:35 ` [PATCH 13/17] staging:iio:adc:ad7280a: Use a local dev pointer to avoid &spi->dev Jonathan Cameron
2021-06-14 11:35 ` [PATCH 14/17] staging:iio:adc:ad7280a: Use device properties to replace platform data Jonathan Cameron
2021-06-14 11:35 ` [PATCH 15/17] dt-bindings:iio:adc:ad7280a: Add binding Jonathan Cameron
2021-06-24 20:28   ` Rob Herring
2021-06-14 11:35 ` [PATCH 16/17] iio:adc:ad7280a: Document ABI for cell balance switches Jonathan Cameron
2021-06-14 11:35 ` [PATCH 17/17] iio:adc:ad7280a: Move out of staging Jonathan Cameron
2021-06-22 17:36 ` [PATCH 00/17] iio:adc:ad7280a Cleanup and proposed staging graduation Marcelo Schmitt
2021-06-23  8:37   ` Jonathan Cameron
2021-07-11 14:50     ` Jonathan Cameron
2021-07-12 18:08       ` Marcelo Schmitt
2021-08-05  3:52         ` Marcelo Schmitt
2021-08-05 12:51           ` Jonathan Cameron

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210614113507.897732-13-jic23@kernel.org \
    --to=jic23@kernel.org \
    --cc=Jonathan.Cameron@huawei.com \
    --cc=Michael.Hennerich@analog.com \
    --cc=Nuno.Sa@analog.com \
    --cc=devicetree@vger.kernel.org \
    --cc=lars@metafoo.de \
    --cc=linux-iio@vger.kernel.org \
    --cc=robh+dt@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.