linux-kernel - [PATCH v3 2/5] iio: accel: bma400: Use macros for generic event configuration values

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Message-ID: <20251002184120.495193-3-akshayaj.lkd@gmail.com>
Date: Fri,  3 Oct 2025 00:11:03 +0530
From: Akshay Jindal <akshayaj.lkd@...il.com>
To: dan@...obertson.com,
	jic23@...nel.org,
	dlechner@...libre.com,
	nuno.sa@...log.com,
	andy@...nel.org
Cc: Akshay Jindal <akshayaj.lkd@...il.com>,
	shuah@...nel.org,
	linux-iio@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v3 2/5] iio: accel: bma400: Use macros for generic event configuration values

Add macros and enums for configuration values used in generic event
handling for activity and inactivity detection. Replace hard-coded
values in activity_event_en() with the new definitions to make the
configuration explicit.

No functional changes are intended.

Signed-off-by: Akshay Jindal <akshayaj.lkd@...il.com>
---
 drivers/iio/accel/bma400.h      | 30 ++++++++++++++++++++++++++++++
 drivers/iio/accel/bma400_core.c | 14 +++++++++++---
 2 files changed, 41 insertions(+), 3 deletions(-)

diff --git a/drivers/iio/accel/bma400.h b/drivers/iio/accel/bma400.h
index ae3411c090c9..13fe2e5a3175 100644
--- a/drivers/iio/accel/bma400.h
+++ b/drivers/iio/accel/bma400.h
@@ -106,8 +106,38 @@
 #define BMA400_GEN1INT_CONFIG0_REG      0x3f
 #define BMA400_GEN2INT_CONFIG0_REG      0x4A
 #define BMA400_GENINT_CONFIG0_HYST_MASK		GENMASK(1, 0)
+#define BMA400_GENINT_CONFIG0_REF_UPD_MODE_MASK	GENMASK(3, 2)
+#define BMA400_GENINT_CONFIG0_DATA_SRC_MASK	BIT(4)
+#define BMA400_GENINT_CONFIG0_X_EN_MASK		BIT(5)
+#define BMA400_GENINT_CONFIG0_Y_EN_MASK		BIT(6)
+#define BMA400_GENINT_CONFIG0_Z_EN_MASK		BIT(7)
+
+enum bma400_accel_data_src {
+	ACCEL_FILT1,
+	ACCEL_FILT2,
+};
+
+enum bma400_ref_updt_mode {
+	BMA400_REF_MANUAL_UPDT_MODE,
+	BMA400_REF_ONETIME_UPDT_MODE,
+	BMA400_REF_EVERYTIME_UPDT_MODE,
+	BMA400_REF_EVERYTIME_LP_UPDT_MODE,
+};
 
 #define BMA400_GEN_CONFIG1_OFF      0x01
+#define BMA400_GENINT_CONFIG1_AXES_COMB_MASK	BIT(0)
+#define BMA400_GENINT_CONFIG1_DETCT_CRIT_MASK	BIT(1)
+
+enum bma400_genintr_acceleval_axescomb {
+	BMA400_EVAL_X_OR_Y_OR_Z,
+	BMA400_EVAL_X_AND_Y_AND_Z,
+};
+
+enum bma400_detect_criterion {
+	BMA400_DETECT_INACTIVITY,
+	BMA400_DETECT_ACTIVITY,
+};
+
 #define BMA400_GEN_CONFIG2_OFF      0x02
 #define BMA400_GEN_CONFIG3_OFF      0x03
 #define BMA400_GEN_CONFIG31_OFF     0x04
diff --git a/drivers/iio/accel/bma400_core.c b/drivers/iio/accel/bma400_core.c
index 35d2b90425f8..58c378ba9931 100644
--- a/drivers/iio/accel/bma400_core.c
+++ b/drivers/iio/accel/bma400_core.c
@@ -1166,14 +1166,16 @@ static int bma400_activity_event_en(struct bma400_data *data,
 	case IIO_EV_DIR_RISING:
 		reg = BMA400_GEN1INT_CONFIG0_REG;
 		msk = BMA400_INT_CONFIG0_GEN1_MASK;
-		value = 2;
+		value = FIELD_PREP(BMA400_GENINT_CONFIG1_AXES_COMB_MASK, BMA400_EVAL_X_OR_Y_OR_Z) |
+			FIELD_PREP(BMA400_GENINT_CONFIG1_DETCT_CRIT_MASK, BMA400_DETECT_ACTIVITY);
 		set_mask_bits(&field_value, BMA400_INT_CONFIG0_GEN1_MASK,
 			      FIELD_PREP(BMA400_INT_CONFIG0_GEN1_MASK, state));
 		break;
 	case IIO_EV_DIR_FALLING:
 		reg = BMA400_GEN2INT_CONFIG0_REG;
 		msk = BMA400_INT_CONFIG0_GEN2_MASK;
-		value = 0;
+		value = FIELD_PREP(BMA400_GENINT_CONFIG1_AXES_COMB_MASK, BMA400_EVAL_X_OR_Y_OR_Z) |
+			FIELD_PREP(BMA400_GENINT_CONFIG1_DETCT_CRIT_MASK, BMA400_DETECT_INACTIVITY);
 		set_mask_bits(&field_value, BMA400_INT_CONFIG0_GEN2_MASK,
 			      FIELD_PREP(BMA400_INT_CONFIG0_GEN2_MASK, state));
 		break;
@@ -1182,7 +1184,13 @@ static int bma400_activity_event_en(struct bma400_data *data,
 	}
 
 	/* Enabling all axis for interrupt evaluation */
-	ret = regmap_write(data->regmap, reg, 0xF8);
+	ret = regmap_write(data->regmap, reg,
+			   BMA400_GENINT_CONFIG0_X_EN_MASK |
+			   BMA400_GENINT_CONFIG0_Y_EN_MASK |
+			   BMA400_GENINT_CONFIG0_Z_EN_MASK|
+			   FIELD_PREP(BMA400_GENINT_CONFIG0_DATA_SRC_MASK, ACCEL_FILT2)|
+			   FIELD_PREP(BMA400_GENINT_CONFIG0_REF_UPD_MODE_MASK,
+				      BMA400_REF_EVERYTIME_UPDT_MODE));
 	if (ret)
 		return ret;
 
-- 
2.43.0