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From: Rupesh Majhi <zoone.rupert@gmail.com>
To: "Andy Shevchenko" <andy@kernel.org>,
	"Bill Wendling" <morbo@google.com>,
	"David Lechner" <dlechner@baylibre.com>,
	"Eddie James" <eajames@linux.ibm.com>,
	"Joel Stanley" <joel@jms.id.au>,
	"Jonathan Cameron" <jic23@kernel.org>,
	"Justin Stitt" <justinstitt@google.com>,
	"Nathan Chancellor" <nathan@kernel.org>,
	"Nick Desaulniers" <ndesaulniers@google.com>,
	"Nuno Sá" <nuno.sa@analog.com>
Cc: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org,
	llvm@lists.linux.dev, Rupesh Majhi <zoone.rupert@gmail.com>,
	stable@vger.kernel.org
Subject: [PATCH v7 01/10] iio: pressure: dps310: fix CFG_REG bit definitions
Date: Fri, 18 Sep 2026 15:25:08 +0300	[thread overview]
Message-ID: <20260918122517.377565-2-zoone.rupert@gmail.com> (raw)
In-Reply-To: <20260918122517.377565-1-zoone.rupert@gmail.com>

Driver defines them as BIT(4), BIT(5) and BIT(6). Per datasheet P_SHIFT
is bit 2, FIFO_EN is bit 1 and SPI_MODE is bit 0.

Only P_SHIFT has a user. dps310_set_pres_precision() sets it at
oversampling 16 or above, so with wrong bit the result register is never
shifted and stops matching the scale factor compensation divides by.
in_pressure_input returns -ERANGE at oversampling 16, 32 and 64.

FIFO_EN needed by FIFO support later in this series.

Fixes: ba6ec48e76bc ("iio: Add driver for Infineon DPS310")
Fixes: d711a3c7dc82 ("iio: dps310: Add pressure sensing capability")
Cc: stable@vger.kernel.org
Assisted-by: LLM
Signed-off-by: Rupesh Majhi <zoone.rupert@gmail.com>
---
 drivers/iio/pressure/dps310.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/iio/pressure/dps310.c b/drivers/iio/pressure/dps310.c
index 45bdb8c7670f..35260b399390 100644
--- a/drivers/iio/pressure/dps310.c
+++ b/drivers/iio/pressure/dps310.c
@@ -50,9 +50,9 @@
 #define DPS310_CFG_REG		0x09
 #define  DPS310_INT_HL		BIT(7)
 #define  DPS310_TMP_SHIFT_EN	BIT(3)
-#define  DPS310_PRS_SHIFT_EN	BIT(4)
-#define  DPS310_FIFO_EN		BIT(5)
-#define  DPS310_SPI_EN		BIT(6)
+#define  DPS310_PRS_SHIFT_EN	BIT(2)
+#define  DPS310_FIFO_EN		BIT(1)
+#define  DPS310_SPI_EN		BIT(0)
 #define DPS310_RESET		0x0c
 #define  DPS310_RESET_MAGIC	0x09
 #define DPS310_COEF_BASE	0x10
-- 
2.43.0


  reply	other threads:[~2026-09-18 12:25 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-18 12:25 [PATCH v7 00/10] iio: pressure: dps310: FIFO and triggered buffer support Rupesh Majhi
2026-09-18 12:25 ` Rupesh Majhi [this message]
2026-09-18 12:25 ` [PATCH v7 02/10] iio: pressure: dps310: use a local device pointer in probe Rupesh Majhi
2026-09-18 12:25 ` [PATCH v7 03/10] iio: pressure: dps310: use get_unaligned_be24() for the 24-bit results Rupesh Majhi
2026-09-18 12:25 ` [PATCH v7 04/10] iio: pressure: dps310: take the lock once per raw read Rupesh Majhi
2026-09-18 12:25 ` [PATCH v7 05/10] iio: pressure: dps310: add triggered buffer support Rupesh Majhi
2026-09-18 12:25 ` [PATCH v7 06/10] iio: core: add an accessor for scan_timestamp Rupesh Majhi
2026-09-18 12:25 ` [PATCH v7 07/10] iio: pressure: dps310: read buffered samples from the hardware FIFO Rupesh Majhi
2026-09-18 12:25 ` [PATCH v7 08/10] iio: pressure: dps310: derive the drain interval from the watermark Rupesh Majhi
2026-09-18 12:25 ` [PATCH v7 09/10] iio: pressure: dps310: implement .hwfifo_flush_to_buffer() Rupesh Majhi
2026-09-18 12:25 ` [PATCH v7 10/10] iio: pressure: dps310: check the lock markings with context analysis Rupesh Majhi

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