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[176.245.211.45]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b842a2bc6bbsm508492166b.27.2026.01.07.04.35.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 07 Jan 2026 04:35:21 -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 1/2] iio: accel: adxl380: Store sampling frequency index in odr struct member Date: Wed, 7 Jan 2026 13:35:17 +0100 Message-Id: <20260107123518.4017292-2-flavra@baylibre.com> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20260107123518.4017292-1-flavra@baylibre.com> References: <20260107123518.4017292-1-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=1782; i=flavra@baylibre.com; h=from:subject; bh=zyNybYwclOAgoLMp37uQ0NnOoXvMnK5xY2bEsHaNd5Q=; b=owEB7QES/pANAwAKAe3xO3POlDZfAcsmYgBpXlL/jooTA19mfEfmr2kRfl+dsgc/hX2E7zUMg PEDwK35P7+JAbMEAAEKAB0WIQSGV4VPlTvcox7DFObt8TtzzpQ2XwUCaV5S/wAKCRDt8TtzzpQ2 X3VkC/9m75RAyWD2okE3IgiqJYcRP60CEb5HwVPWCCezOuLxIT2YJ6SwX/45G+QVbIPhybusbBF XoDTumgUDd375EVA8HZ5upsxEdlK0nJ+SJgIYLpYg7jku0HUDzKJKqThAQHmYngxsSPNptFad3G 2BaaqWeEw87XxO8xMrOcyiDx1CG1Famvj/6V6o3ZHSzxxBFjKNP92872aand3ApoBJfzQxY+856 iHfYTeohSW7TAbqsCPFiJGuCdvo5EjLhwGi5e5FnWmoN/4RpgdZeGr7wWbyJtA0CWanf7hTzRaf 8xsnNfvCKw+4aA6Mvbsba0GWw2FDV8Z2+SiKcsOQ9b/wII/TvCGwfgLr8HAnF9kEtzb71qZulvo zWzzuO6BD8Xj5FuwIvm56Pyc6l7jQHdXDXmP4uB5Lz/HA0DuuFYDUwarZ7rFk2sXNNDsTyU867J 48sU0YVoYOw5fUBgmxvyQEQCh7T24KIqnfEMpB5O064okGbOPAtRXtCdLjtiuZOlirlUg= X-Developer-Key: i=flavra@baylibre.com; a=openpgp; fpr=8657854F953BDCA31EC314E6EDF13B73CE94365F Content-Transfer-Encoding: 8bit The ADXL380 driver assumes that acceleration samples are always retrieved via the high-performance DSM signal path; as a result, the sampling frequency value depends exclusively on the decimation filter settings in the TRIG_CFG register. In preparation for adding support for sampling frequency values that rely on the low-power SAR signal path (on which the decimation filters are not supported), use the (currently unused) 'odr' member of struct adxl380_state to store the sampling frequency value, and when userspace requests the current frequency value, retrieve it from the struct instead of calculating it from the decimation filter settings. Signed-off-by: Francesco Lavra --- drivers/iio/accel/adxl380.c | 13 ++----------- 1 file changed, 2 insertions(+), 11 deletions(-) diff --git a/drivers/iio/accel/adxl380.c b/drivers/iio/accel/adxl380.c index ce3643c5deb8..bbf1f88ca781 100644 --- a/drivers/iio/accel/adxl380.c +++ b/drivers/iio/accel/adxl380.c @@ -417,17 +417,7 @@ static int adxl380_read_chn(struct adxl380_state *st, u8 addr) static int adxl380_get_odr(struct adxl380_state *st, int *odr) { - int ret; - unsigned int trig_cfg, odr_idx; - - ret = regmap_read(st->regmap, ADXL380_TRIG_CFG_REG, &trig_cfg); - if (ret) - return ret; - - odr_idx = (FIELD_GET(ADXL380_TRIG_CFG_SINC_RATE_MSK, trig_cfg) << 1) | - (FIELD_GET(ADXL380_TRIG_CFG_DEC_2X_MSK, trig_cfg) & 1); - - *odr = st->chip_info->samp_freq_tbl[odr_idx]; + *odr = st->chip_info->samp_freq_tbl[st->odr]; return 0; } @@ -500,6 +490,7 @@ static int adxl380_set_odr(struct adxl380_state *st, u8 odr) if (ret) return ret; + st->odr = odr; ret = adxl380_set_measure_en(st, true); if (ret) return ret; -- 2.39.5