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Date:   Wed, 27 Sep 2023 15:56:31 +0300
From:   Matti Vaittinen <mazziesaccount@gmail.com>
To:     Matti Vaittinen <mazziesaccount@gmail.com>,
        Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Cc:     Jonathan Cameron <jic23@kernel.org>,
        Lars-Peter Clausen <lars@metafoo.de>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>,
        Matti Vaittinen <mazziesaccount@gmail.com>,
        Mehdi Djait <mehdi.djait.k@gmail.com>,
        linux-iio@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: [PATCH 2/2] iio: kx022a: Support ROHM KX132ACR-LBZ
Message-ID: <3bc7431c7899b166d26b1c8d8f85914a5727b16a.1695819243.git.mazziesaccount@gmail.com>
References: <cover.1695819243.git.mazziesaccount@gmail.com>
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dt-bindings: iio: Add KX132ACR-LBZ accelerometer

ROHM KX132ACR-LBZ is an accelerometer for industrial applications. It
has a subset of KX022A functionalities, dropping support for tap, free
fall and tilt detection engines. Also, the register interface is an exact
subset of what is found on KX022A (except the WHO_AM_I register value).

Add support for KX132ACR-LBZ.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
---
 drivers/iio/accel/kionix-kx022a-i2c.c |  4 +++-
 drivers/iio/accel/kionix-kx022a-spi.c |  4 +++-
 drivers/iio/accel/kionix-kx022a.c     | 34 ++++++++++++++++++++++++++-
 drivers/iio/accel/kionix-kx022a.h     |  2 ++
 4 files changed, 41 insertions(+), 3 deletions(-)

diff --git a/drivers/iio/accel/kionix-kx022a-i2c.c b/drivers/iio/accel/kion=
ix-kx022a-i2c.c
index fc53e527cae0..8a1d4fc28ddd 100644
--- a/drivers/iio/accel/kionix-kx022a-i2c.c
+++ b/drivers/iio/accel/kionix-kx022a-i2c.c
@@ -2,7 +2,7 @@
 /*
  * Copyright (C) 2022 ROHM Semiconductors
  *
- * ROHM/KIONIX KX022A accelerometer driver
+ * ROHM/KIONIX accelerometer driver
  */
=20
 #include <linux/i2c.h>
@@ -38,6 +38,7 @@ static int kx022a_i2c_probe(struct i2c_client *i2c)
 static const struct i2c_device_id kx022a_i2c_id[] =3D {
 	{ .name =3D "kx022a", .driver_data =3D (kernel_ulong_t)&kx022a_chip_info =
},
 	{ .name =3D "kx132-1211", .driver_data =3D (kernel_ulong_t)&kx132_chip_in=
fo },
+	{ .name =3D "kx132acr-lbz", .driver_data =3D (kernel_ulong_t)&kx132acr_ch=
ip_info },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, kx022a_i2c_id);
@@ -45,6 +46,7 @@ MODULE_DEVICE_TABLE(i2c, kx022a_i2c_id);
 static const struct of_device_id kx022a_of_match[] =3D {
 	{ .compatible =3D "kionix,kx022a", .data =3D &kx022a_chip_info },
 	{ .compatible =3D "kionix,kx132-1211", .data =3D &kx132_chip_info },
+	{ .compatible =3D "rohm,kx132acr-lbz", .data =3D &kx132acr_chip_info },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, kx022a_of_match);
diff --git a/drivers/iio/accel/kionix-kx022a-spi.c b/drivers/iio/accel/kion=
ix-kx022a-spi.c
index e7878ba67827..f798b964d0b5 100644
--- a/drivers/iio/accel/kionix-kx022a-spi.c
+++ b/drivers/iio/accel/kionix-kx022a-spi.c
@@ -2,7 +2,7 @@
 /*
  * Copyright (C) 2022 ROHM Semiconductors
  *
- * ROHM/KIONIX KX022A accelerometer driver
+ * ROHM/KIONIX accelerometer driver
  */
=20
 #include <linux/interrupt.h>
@@ -38,6 +38,7 @@ static int kx022a_spi_probe(struct spi_device *spi)
 static const struct spi_device_id kx022a_id[] =3D {
 	{ .name =3D "kx022a", .driver_data =3D (kernel_ulong_t)&kx022a_chip_info =
},
 	{ .name =3D "kx132-1211", .driver_data =3D (kernel_ulong_t)&kx132_chip_in=
fo },
+	{ .name =3D "kx132acr-lbz", .driver_data =3D (kernel_ulong_t)&kx132acr_ch=
ip_info },
 	{ }
 };
 MODULE_DEVICE_TABLE(spi, kx022a_id);
@@ -45,6 +46,7 @@ MODULE_DEVICE_TABLE(spi, kx022a_id);
 static const struct of_device_id kx022a_of_match[] =3D {
 	{ .compatible =3D "kionix,kx022a", .data =3D &kx022a_chip_info },
 	{ .compatible =3D "kionix,kx132-1211", .data =3D &kx132_chip_info },
+	{ .compatible =3D "rohm,kx132acr-lbz", .data =3D &kx132acr_chip_info },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, kx022a_of_match);
diff --git a/drivers/iio/accel/kionix-kx022a.c b/drivers/iio/accel/kionix-k=
x022a.c
index c5b555094e60..60864be3a667 100644
--- a/drivers/iio/accel/kionix-kx022a.c
+++ b/drivers/iio/accel/kionix-kx022a.c
@@ -2,7 +2,7 @@
 /*
  * Copyright (C) 2022 ROHM Semiconductors
  *
- * ROHM/KIONIX KX022A accelerometer driver
+ * ROHM/KIONIX accelerometer driver
  */
=20
 #include <linux/delay.h>
@@ -1188,6 +1188,38 @@ const struct kx022a_chip_info kx132_chip_info =3D {
 };
 EXPORT_SYMBOL_NS_GPL(kx132_chip_info, IIO_KX022A);
=20
+/*
+ * Despite the naming, KX132ACR-LBZ is not similar to KX132-1211 but it is
+ * exact subset of KX022A. KX132ACR-LBZ is meant to be used for industrial
+ * applications and the tap/double tap, free fall and tilt engines were
+ * removed. Rest of the registers and functionalities (excluding the ID
+ * register) are exact match to what is found in KX022.
+ */
+const struct kx022a_chip_info kx132acr_chip_info =3D {
+	.name				=3D "kx132acr-lbz",
+	.regmap_config			=3D &kx022a_regmap_config,
+	.channels			=3D kx022a_channels,
+	.num_channels			=3D ARRAY_SIZE(kx022a_channels),
+	.fifo_length			=3D KX022A_FIFO_LENGTH,
+	.who				=3D KX022A_REG_WHO,
+	.id				=3D KX132ACR_LBZ_ID,
+	.cntl				=3D KX022A_REG_CNTL,
+	.cntl2				=3D KX022A_REG_CNTL2,
+	.odcntl				=3D KX022A_REG_ODCNTL,
+	.buf_cntl1			=3D KX022A_REG_BUF_CNTL1,
+	.buf_cntl2			=3D KX022A_REG_BUF_CNTL2,
+	.buf_clear			=3D KX022A_REG_BUF_CLEAR,
+	.buf_status1			=3D KX022A_REG_BUF_STATUS_1,
+	.buf_read			=3D KX022A_REG_BUF_READ,
+	.inc1				=3D KX022A_REG_INC1,
+	.inc4				=3D KX022A_REG_INC4,
+	.inc5				=3D KX022A_REG_INC5,
+	.inc6				=3D KX022A_REG_INC6,
+	.xout_l				=3D KX022A_REG_XOUT_L,
+	.get_fifo_bytes_available	=3D kx022a_get_fifo_bytes_available,
+};
+EXPORT_SYMBOL_NS_GPL(kx132acr_chip_info, IIO_KX022A);
+
 int kx022a_probe_internal(struct device *dev, const struct kx022a_chip_inf=
o *chip_info)
 {
 	static const char * const regulator_names[] =3D {"io-vdd", "vdd"};
diff --git a/drivers/iio/accel/kionix-kx022a.h b/drivers/iio/accel/kionix-k=
x022a.h
index 35c548ae7eff..7060438ad88c 100644
--- a/drivers/iio/accel/kionix-kx022a.h
+++ b/drivers/iio/accel/kionix-kx022a.h
@@ -13,6 +13,7 @@
=20
 #define KX022A_REG_WHO		0x0f
 #define KX022A_ID		0xc8
+#define KX132ACR_LBZ_ID		0xd8
=20
 #define KX022A_REG_CNTL2	0x19
 #define KX022A_MASK_SRST	BIT(7)
@@ -186,5 +187,6 @@ int kx022a_probe_internal(struct device *dev, const str=
uct kx022a_chip_info *chi
=20
 extern const struct kx022a_chip_info kx022a_chip_info;
 extern const struct kx022a_chip_info kx132_chip_info;
+extern const struct kx022a_chip_info kx132acr_chip_info;
=20
 #endif
--=20
2.41.0


--=20
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND

~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =3D]=20

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