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[84.72.156.211]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3a4f009f9d6sm11890444f8f.84.2025.06.01.10.22.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 01 Jun 2025 10:22:00 -0700 (PDT) From: Lothar Rubusch To: jic23@kernel.org, dlechner@baylibre.com, nuno.sa@analog.com, andy@kernel.org, corbet@lwn.net, lucas.p.stankus@gmail.com, lars@metafoo.de, Michael.Hennerich@analog.com, bagasdotme@gmail.com Cc: l.rubusch@gmail.com, linux-iio@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 09/11] iio: accel: adxl313: implement power-save on inactivity Date: Sun, 1 Jun 2025 17:21:37 +0000 Message-Id: <20250601172139.59156-10-l.rubusch@gmail.com> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250601172139.59156-1-l.rubusch@gmail.com> References: <20250601172139.59156-1-l.rubusch@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Link activity and inactivity to indicate the internal power-saving state. Add auto-sleep to be linked to inactivity. Signed-off-by: Lothar Rubusch --- drivers/iio/accel/adxl313.h | 3 +++ drivers/iio/accel/adxl313_core.c | 20 ++++++++++++++++++++ 2 files changed, 23 insertions(+) diff --git a/drivers/iio/accel/adxl313.h b/drivers/iio/accel/adxl313.h index d7e8cb44855b..75ef54b60f75 100644 --- a/drivers/iio/accel/adxl313.h +++ b/drivers/iio/accel/adxl313.h @@ -41,6 +41,9 @@ #define ADXL313_RATE_BASE 6 #define ADXL313_POWER_CTL_MSK BIT(3) +#define ADXL313_POWER_CTL_INACT_MSK GENMASK(5, 4) +#define ADXL313_POWER_CTL_LINK BIT(5) +#define ADXL313_POWER_CTL_AUTO_SLEEP BIT(4) #define ADXL313_RANGE_MSK GENMASK(1, 0) #define ADXL313_RANGE_MAX 3 diff --git a/drivers/iio/accel/adxl313_core.c b/drivers/iio/accel/adxl313_core.c index c5767d56b0cb..1598562a38e2 100644 --- a/drivers/iio/accel/adxl313_core.c +++ b/drivers/iio/accel/adxl313_core.c @@ -396,6 +396,7 @@ static int adxl313_set_act_inact_en(struct adxl313_data *data, unsigned int axis_ctrl; unsigned int threshold; unsigned int inact_time_s; + int act_en, inact_en; bool en; int ret; @@ -431,6 +432,25 @@ static int adxl313_set_act_inact_en(struct adxl313_data *data, if (ret) return ret; + /* + * Set sleep and link bit only when ACT and INACT are enabled. + */ + act_en = adxl313_is_act_inact_en(data, ADXL313_ACTIVITY); + if (act_en < 0) + return act_en; + + inact_en = adxl313_is_act_inact_en(data, ADXL313_INACTIVITY); + if (inact_en < 0) + return inact_en; + + en = en && act_en && inact_en; + + ret = regmap_assign_bits(data->regmap, ADXL313_REG_POWER_CTL, + (ADXL313_POWER_CTL_AUTO_SLEEP | ADXL313_POWER_CTL_LINK), + en); + if (ret) + return ret; + return adxl313_set_measure_en(data, true); } -- 2.39.5