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[176.247.57.96]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b6d854763b1sm1661301666b.71.2025.10.30.00.28.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 30 Oct 2025 00:28:03 -0700 (PDT) From: Francesco Lavra To: Lorenzo Bianconi , 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 9/9] iio: imu: st_lsm6dsx: add tap event detection Date: Thu, 30 Oct 2025 08:27:52 +0100 Message-Id: <20251030072752.349633-10-flavra@baylibre.com> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20251030072752.349633-1-flavra@baylibre.com> References: <20251030072752.349633-1-flavra@baylibre.com> Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=3025; i=flavra@baylibre.com; h=from:subject; bh=ryWrHwVNfLrlYPtWRwT19syvjek2k+I8uWyDlcucveg=; b=owEB7QES/pANAwAKAe3xO3POlDZfAcsmYgBpAxNLuoGQgeF2bVzRfpEk/5RAI+1zVrRkSrMrR b1W978ht+qJAbMEAAEKAB0WIQSGV4VPlTvcox7DFObt8TtzzpQ2XwUCaQMTSwAKCRDt8TtzzpQ2 X9unC/41B/+tkoh1a9dryX84uhL23mUeKgMj7JYCt1IIZ1qSNZBtB2rLTi1m5wwg54p3FODIsRo QJ5cE8soOw4PEvXngPTLIEK5YsAfdNRLa58GMegk4x603vcjzw7CrF8gGDc8/SdWv7OIPtG+TQy ODt4rU3HltHbDEMce9jR0xwdc24dsrh89KyQZkoBnnuIPOMNl99Bp6v750rQdOHGIkwR3fLgDRz dgfDEnNAFiZVtL9QXZ9PPnaheX6uxLT3gP51wRm285M0PR9+p+MqKDKb3msjzi5bm3KHR/gzUQP oc8edF75oSicvW/mTBb3UXWlxxVWq+8qL9KjFmpw5CEzDFN4rPbKCiAbkwaM4RlLxAb0YEHPpXn 7l7kFfwLOr4QPQ4+9Djh1NnNTNMN5wjAy3jsLiVVys5KM9AMCYt68y34dMRdTv6qEV5mr71Deh1 gy0n0m6yh8F55IZOKa3K0IGNpY4s3xxJnPTv2r/wsIo+MwbQUtShc1IzdESuLo//GCq0k= X-Developer-Key: i=flavra@baylibre.com; a=openpgp; fpr=8657854F953BDCA31EC314E6EDF13B73CE94365F Content-Transfer-Encoding: 8bit Add the logic to advertise tap event capability and report tap events; define a tap event source for the LSM6DSV chip family. Tested on LSMDSV16X. Signed-off-by: Francesco Lavra --- drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h | 1 + drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 35 ++++++++++++++++++++ 2 files changed, 36 insertions(+) diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h index 62edd177c87c..75953a78fc04 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h @@ -223,6 +223,7 @@ struct st_lsm6dsx_shub_settings { enum st_lsm6dsx_event_id { ST_LSM6DSX_EVENT_WAKEUP, + ST_LSM6DSX_EVENT_TAP, ST_LSM6DSX_EVENT_MAX }; diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c index 6d1b7b2a371a..1bc69c6c1b9d 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c @@ -1349,6 +1349,30 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = { .status_y_mask = BIT(1), .status_x_mask = BIT(2), }, + [ST_LSM6DSX_EVENT_TAP] = { + .x_value = { + .addr = 0x57, + .mask = GENMASK(4, 0), + }, + .y_value = { + .addr = 0x58, + .mask = GENMASK(4, 0), + }, + .z_value = { + .addr = 0x59, + .mask = GENMASK(4, 0), + }, + .enable_mask = BIT(6), + .enable_axis_reg = 0x56, + .enable_x_mask = BIT(3), + .enable_y_mask = BIT(2), + .enable_z_mask = BIT(1), + .status_reg = 0x46, + .status_mask = BIT(5), + .status_x_mask = BIT(2), + .status_y_mask = BIT(1), + .status_z_mask = BIT(0), + }, }, }, }, @@ -1846,6 +1870,8 @@ static enum st_lsm6dsx_event_id st_lsm6dsx_get_event_id(enum iio_event_type type switch (type) { case IIO_EV_TYPE_THRESH: return ST_LSM6DSX_EVENT_WAKEUP; + case IIO_EV_TYPE_GESTURE: + return ST_LSM6DSX_EVENT_TAP; default: return ST_LSM6DSX_EVENT_MAX; } @@ -2427,6 +2453,13 @@ static int st_lsm6dsx_chan_init(struct iio_chan_spec *channels, struct st_lsm6ds event_spec->dir = IIO_EV_DIR_EITHER; event_spec->mask_separate = BIT(IIO_EV_INFO_VALUE) | BIT(IIO_EV_INFO_ENABLE); + event_spec++; + } + if (event_sources & BIT(ST_LSM6DSX_EVENT_TAP)) { + event_spec->type = IIO_EV_TYPE_GESTURE; + event_spec->dir = IIO_EV_DIR_SINGLETAP; + event_spec->mask_separate = BIT(IIO_EV_INFO_VALUE) | + BIT(IIO_EV_INFO_ENABLE); } } } @@ -2553,6 +2586,8 @@ st_lsm6dsx_report_motion_event(struct st_lsm6dsx_hw *hw) events_found = st_lsm6dsx_report_events(hw, ST_LSM6DSX_EVENT_WAKEUP, IIO_EV_TYPE_THRESH, IIO_EV_DIR_EITHER); + events_found |= st_lsm6dsx_report_events(hw, ST_LSM6DSX_EVENT_TAP, IIO_EV_TYPE_GESTURE, + IIO_EV_DIR_SINGLETAP); return events_found; } -- 2.39.5