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From: Vasileios Amoiridis <vassilisamir@gmail.com>
To: jic23@kernel.org
Cc: lars@metafoo.de, andriy.shevchenko@linux.intel.com,
	ang.iglesiasg@gmail.com, mazziesaccount@gmail.com,
	ak@it-klinger.de, petre.rodan@subdimension.ro,
	phil@raspberrypi.com, 579lpy@gmail.com,
	u.kleine-koenig@pengutronix.de, biju.das.jz@bp.renesas.com,
	linus.walleij@linaro.org, semen.protsenko@linaro.org,
	linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org,
	Vasileios Amoiridis <vassilisamir@gmail.com>
Subject: [PATCH v4 5/6] iio: pressure: bmp280: Add SCALE, RAW values in channels and refactorize them
Date: Sun,  7 Apr 2024 19:29:19 +0200	[thread overview]
Message-ID: <20240407172920.264282-6-vassilisamir@gmail.com> (raw)
In-Reply-To: <20240407172920.264282-1-vassilisamir@gmail.com>

Add extra IIO_CHAN_INFO_SCALE and IIO_CHAN_INFO_RAW channels in order
to be able to calculate the processed value with standard userspace
IIO tools. Can be used for triggered buffers as well.

Even though it is not a good design choice to have SCALE, RAW and
PROCESSED together, the PROCESSED channel is kept for ABI compatibility.

While at it, separate BMPxxx and BMExxx device channels since BME
supports also humidity measurements.

Signed-off-by: Vasileios Amoiridis <vassilisamir@gmail.com>
---
 drivers/iio/pressure/bmp280-core.c | 86 +++++++++++++++++++++++++++---
 1 file changed, 78 insertions(+), 8 deletions(-)

diff --git a/drivers/iio/pressure/bmp280-core.c b/drivers/iio/pressure/bmp280-core.c
index d05035574683..1b894feb717b 100644
--- a/drivers/iio/pressure/bmp280-core.c
+++ b/drivers/iio/pressure/bmp280-core.c
@@ -137,17 +137,45 @@ enum {
 static const struct iio_chan_spec bmp280_channels[] = {
 	{
 		.type = IIO_PRESSURE,
+		/* PROCESSED maintained for ABI backwards compatibility */
 		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
+				      BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE) |
 				      BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
 	},
 	{
 		.type = IIO_TEMP,
+		/* PROCESSED maintained for ABI backwards compatibility */
 		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
+				      BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE) |
+				      BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+	},
+};
+
+static const struct iio_chan_spec bme280_channels[] = {
+	{
+		.type = IIO_PRESSURE,
+		/* PROCESSED maintained for ABI backwards compatibility */
+		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
+				      BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE) |
+				      BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+	},
+	{
+		.type = IIO_TEMP,
+		/* PROCESSED maintained for ABI backwards compatibility */
+		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
+				      BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE) |
 				      BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
 	},
 	{
 		.type = IIO_HUMIDITYRELATIVE,
+		/* PROCESSED maintained for ABI backwards compatibility */
 		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
+				      BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE) |
 				      BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
 	},
 };
@@ -155,21 +183,20 @@ static const struct iio_chan_spec bmp280_channels[] = {
 static const struct iio_chan_spec bmp380_channels[] = {
 	{
 		.type = IIO_PRESSURE,
+		/* PROCESSED maintained for ABI backwards compatibility */
 		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
+				      BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE) |
 				      BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
 		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ) |
 					   BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),
 	},
 	{
 		.type = IIO_TEMP,
+		/* PROCESSED maintained for ABI backwards compatibility */
 		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
-				      BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
-		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ) |
-					   BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),
-	},
-	{
-		.type = IIO_HUMIDITYRELATIVE,
-		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
+				      BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE) |
 				      BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
 		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ) |
 					   BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),
@@ -529,6 +556,49 @@ static int bmp_read_raw_impl(struct iio_dev *indio_dev,
 		default:
 			return -EINVAL;
 		}
+	case IIO_CHAN_INFO_RAW:
+		switch (chan->type) {
+		case IIO_HUMIDITYRELATIVE:
+			ret = data->chip_info->read_humid(data, &chan_value);
+			if (ret)
+				return ret;
+
+			*val = chan_value;
+			return IIO_VAL_INT;
+		case IIO_PRESSURE:
+			ret = data->chip_info->read_press(data, &chan_value);
+			if (ret)
+				return ret;
+
+			*val = chan_value;
+			return IIO_VAL_INT;
+		case IIO_TEMP:
+			ret = data->chip_info->read_temp(data, &chan_value);
+			if (ret)
+				return ret;
+
+			*val = chan_value;
+			return IIO_VAL_INT;
+		default:
+			return -EINVAL;
+		}
+	case IIO_CHAN_INFO_SCALE:
+		switch (chan->type) {
+		case IIO_HUMIDITYRELATIVE:
+			*val = data->chip_info->humid_coeffs[0];
+			*val2 = data->chip_info->humid_coeffs[1];
+			return data->chip_info->humid_coeffs_type;
+		case IIO_PRESSURE:
+			*val = data->chip_info->press_coeffs[0];
+			*val2 = data->chip_info->press_coeffs[1];
+			return data->chip_info->press_coeffs_type;
+		case IIO_TEMP:
+			*val = data->chip_info->temp_coeffs[0];
+			*val2 = data->chip_info->temp_coeffs[1];
+			return data->chip_info->temp_coeffs_type;
+		default:
+			return -EINVAL;
+		}
 	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
 		switch (chan->type) {
 		case IIO_HUMIDITYRELATIVE:
@@ -895,7 +965,7 @@ const struct bmp280_chip_info bme280_chip_info = {
 	.num_chip_id = ARRAY_SIZE(bme280_chip_ids),
 	.regmap_config = &bmp280_regmap_config,
 	.start_up_time = 2000,
-	.channels = bmp280_channels,
+	.channels = bme280_channels,
 	.num_channels = 3,
 
 	.oversampling_temp_avail = bmp280_oversampling_avail,
-- 
2.25.1


  parent reply	other threads:[~2024-04-07 17:29 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-04-07 17:29 [PATCH v4 0/6] Driver cleanup and series to add triggered buffer Vasileios Amoiridis
2024-04-07 17:29 ` [PATCH v4 1/6] iio: pressure: bmp280: Various driver cleanups Vasileios Amoiridis
2024-04-13 16:52   ` Jonathan Cameron
2024-04-14 16:19     ` Vasileios Amoiridis
2024-04-14 18:13       ` Jonathan Cameron
2024-04-14 23:41     ` Vasileios Amoiridis
2024-04-07 17:29 ` [PATCH v4 2/6] iio: pressure: bmp280: Refactorize reading functions Vasileios Amoiridis
2024-04-13 16:56   ` Jonathan Cameron
2024-04-07 17:29 ` [PATCH v4 3/6] iio: pressure: bmp280: Introduce new cleanup routines Vasileios Amoiridis
2024-04-13 16:58   ` Jonathan Cameron
2024-04-07 17:29 ` [PATCH v4 4/6] iio: pressure: bmp280: Generalize read_{temp,press,humid}() functions Vasileios Amoiridis
2024-04-07 17:29 ` Vasileios Amoiridis [this message]
2024-04-07 17:29 ` [PATCH v4 6/6] iio: pressure: bmp280: Add triggered buffer support Vasileios Amoiridis
2024-04-13 17:06   ` Jonathan Cameron
2024-04-07 21:51 ` [PATCH v4 0/6] Driver cleanup and series to add triggered buffer Angel Iglesias
2024-04-08 15:01   ` Andy Shevchenko
2024-04-08 16:58     ` Vasileios Amoiridis

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