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Thu, 15 Jan 2026 09:53:54 -0800 (PST) From: Francesco Lavra To: Ramona Gradinariu , Antoniu Miclaus , Lars-Peter Clausen , Michael Hennerich , Jonathan Cameron , David Lechner , =?UTF-8?q?Nuno=20S=C3=A1?= , Andy Shevchenko , linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 2/3] iio: accel: adxl380: Introduce helper function for activity detection Date: Thu, 15 Jan 2026 18:53:49 +0100 Message-Id: <20260115175350.1045887-3-flavra@baylibre.com> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20260115175350.1045887-1-flavra@baylibre.com> References: <20260115175350.1045887-1-flavra@baylibre.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2360; i=flavra@baylibre.com; h=from:subject; bh=KQ6deyzkVjZq6NIK6tTIuKlZvKBK+ceRfenBzkSvgYI=; b=owEB7QES/pANAwAKAe3xO3POlDZfAcsmYgBpaSmfTrIanMXh3+id52zUDk/0dRnn3I1dF5hPM 0CLWj6GbbGJAbMEAAEKAB0WIQSGV4VPlTvcox7DFObt8TtzzpQ2XwUCaWkpnwAKCRDt8TtzzpQ2 X6l+DAClES+b9ecDuwGMCe0Ztb/3FUf8eROlHGiCmkJn2rdGtG62ULDe50onZ2llrRARoLBOZe6 wZozNaZjNO0vMbWV17/sBn6dqAIGei633Uhgzkk6655BvUmvpVYZPg7A9uSCn8KsHRvmpY6HJqG //veSVc3QRa/SOTQtmUdIyc86IxUAWgQ5FonEYJIhCZ2QKAP7bdseq2jhsXwyxe65np/pCSsJyi i11xLZK1EV+WCnVyUxPqPyzs0G37kaiUhZWNCpP9dxKxdMB9HxKS0YezbQSO9q9cC7Rtve53pjT 98iFNLRmERNGN7WcCPqpkP+X9ewrYbjD6J4wEAUYAvZQ+IK5BCExecdONCVvV9cLWTBt6J/htp8 uNUaBTNl7YnLwx2XhPmKcQQezizL6SRPzcLF3RiEzf3rBfN1nhag+aUYxHnd/3CZaMCu8RHJrP7 Z77nGvhi9eQeTJSJ61R12EqQIGJBYrNl0p2MjwhtBn/K3WzQDCdvlMOReZlmZtEDEHU3o= X-Developer-Key: i=flavra@baylibre.com; a=openpgp; fpr=8657854F953BDCA31EC314E6EDF13B73CE94365F Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Motion detection functionalities (such as activity and inactivity detection) are only available when the chip is in a low-power mode; this affects the available sampling frequency values. In preparation for adding support for a new frequency value, introduce a helper function that checks whether activity/inactivity detection is currently enabled; this function will be reused in a future commit to determine what frequency values are available at any given time. No functional changes. Signed-off-by: Francesco Lavra --- drivers/iio/accel/adxl380.c | 27 ++++++++++++++++++++++----- 1 file changed, 22 insertions(+), 5 deletions(-) diff --git a/drivers/iio/accel/adxl380.c b/drivers/iio/accel/adxl380.c index bbf1f88ca781..b99458a5eae3 100644 --- a/drivers/iio/accel/adxl380.c +++ b/drivers/iio/accel/adxl380.c @@ -232,14 +232,33 @@ bool adxl380_readable_noinc_reg(struct device *dev, u= nsigned int reg) } EXPORT_SYMBOL_NS_GPL(adxl380_readable_noinc_reg, "IIO_ADXL380"); =20 +static int adxl380_act_inact_enabled(struct adxl380_state *st, bool *enabl= ed) +{ + unsigned int act_inact_ctl; + int ret; + + if (!st->chip_info->has_low_power) { + *enabled =3D false; + return 0; + } + + ret =3D regmap_read(st->regmap, ADXL380_ACT_INACT_CTL_REG, &act_inact_ctl= ); + if (!ret) + *enabled =3D FIELD_GET(ADXL380_ACT_EN_MSK, act_inact_ctl) || + FIELD_GET(ADXL380_INACT_EN_MSK, act_inact_ctl); + + return ret; +} + static int adxl380_set_measure_en(struct adxl380_state *st, bool en) { int ret; - unsigned int act_inact_ctl; u8 op_mode =3D ADXL380_OP_MODE_STANDBY; =20 if (en) { - ret =3D regmap_read(st->regmap, ADXL380_ACT_INACT_CTL_REG, &act_inact_ct= l); + bool act_inact_enabled; + + ret =3D adxl380_act_inact_enabled(st, &act_inact_enabled); if (ret) return ret; =20 @@ -248,9 +267,7 @@ static int adxl380_set_measure_en(struct adxl380_state = *st, bool en) * mode and for devices that support low power modes. Otherwise * go straight to measure mode (same bits as ADXL380_OP_MODE_HP). */ - if (st->chip_info->has_low_power && - (FIELD_GET(ADXL380_ACT_EN_MSK, act_inact_ctl) || - FIELD_GET(ADXL380_INACT_EN_MSK, act_inact_ctl))) + if (act_inact_enabled) op_mode =3D ADXL380_OP_MODE_VLP; else op_mode =3D ADXL380_OP_MODE_HP; --=20 2.39.5