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Date: Mon, 21 Sep 2015 12:55:16 +0200
From: Markus Pargmann <mpa@...gutronix.de>
To: Jonathan Cameron <jic23@...nel.org>
Cc: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
Irina Tirdea <irina.tirdea@...el.com>,
Lars-Peter Clausen <lars@...afoo.de>,
linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
kernel@...gutronix.de, Markus Pargmann <mpa@...gutronix.de>
Subject: [PATCH v3 4/4] iio: bmc150: Add SPI driver
Add a simple SPI driver which initializes the spi regmap for the bmc150
core driver.
Signed-off-by: Markus Pargmann <mpa@...gutronix.de>
---
drivers/iio/accel/Kconfig | 5 +++
drivers/iio/accel/Makefile | 1 +
drivers/iio/accel/bmc150-accel-spi.c | 80 ++++++++++++++++++++++++++++++++++++
3 files changed, 86 insertions(+)
create mode 100644 drivers/iio/accel/bmc150-accel-spi.c
diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig
index 280635545240..a010329f7d06 100644
--- a/drivers/iio/accel/Kconfig
+++ b/drivers/iio/accel/Kconfig
@@ -23,6 +23,7 @@ config BMC150_ACCEL
select IIO_TRIGGERED_BUFFER
select REGMAP
select BMC150_ACCEL_I2C if I2C
+ select BMC150_ACCEL_SPI if SPI
help
Say yes here to build support for the following Bosch accelerometers:
BMC150, BMI055, BMA250E, BMA222E, BMA255, BMA280.
@@ -35,6 +36,10 @@ config BMC150_ACCEL_I2C
tristate
select REGMAP_I2C
+config BMC150_ACCEL_SPI
+ tristate
+ select REGMAP_SPI
+
config HID_SENSOR_ACCEL_3D
depends on HID_SENSOR_HUB
select IIO_BUFFER
diff --git a/drivers/iio/accel/Makefile b/drivers/iio/accel/Makefile
index 5ef8bdbad092..e579e93bf022 100644
--- a/drivers/iio/accel/Makefile
+++ b/drivers/iio/accel/Makefile
@@ -6,6 +6,7 @@
obj-$(CONFIG_BMA180) += bma180.o
obj-$(CONFIG_BMC150_ACCEL) += bmc150-accel-core.o
obj-$(CONFIG_BMC150_ACCEL_I2C) += bmc150-accel-i2c.o
+obj-$(CONFIG_BMC150_ACCEL_SPI) += bmc150-accel-spi.o
obj-$(CONFIG_HID_SENSOR_ACCEL_3D) += hid-sensor-accel-3d.o
obj-$(CONFIG_KXCJK1013) += kxcjk-1013.o
obj-$(CONFIG_KXSD9) += kxsd9.o
diff --git a/drivers/iio/accel/bmc150-accel-spi.c b/drivers/iio/accel/bmc150-accel-spi.c
new file mode 100644
index 000000000000..41dd842996b0
--- /dev/null
+++ b/drivers/iio/accel/bmc150-accel-spi.c
@@ -0,0 +1,80 @@
+/*
+ * 3-axis accelerometer driver supporting SPI Bosch-Sensortec accelerometer chip
+ * Copyright © 2015 Pengutronix, Markus Pargmann <mpa@...gutronix.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/device.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/acpi.h>
+#include <linux/regmap.h>
+#include <linux/spi/spi.h>
+
+#include "bmc150-accel.h"
+
+static const struct regmap_config bmc150_spi_regmap_conf = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = 0x3f,
+};
+
+static int bmc150_accel_probe(struct spi_device *spi)
+{
+ struct regmap *regmap;
+ const struct spi_device_id *id = spi_get_device_id(spi);
+
+ regmap = devm_regmap_init_spi(spi, &bmc150_spi_regmap_conf);
+ if (IS_ERR(regmap)) {
+ dev_err(&spi->dev, "Failed to initialize spi regmap\n");
+ return PTR_ERR(regmap);
+ }
+
+ return bmc150_accel_core_probe(&spi->dev, regmap, spi->irq, id->name,
+ true);
+}
+
+static int bmc150_accel_remove(struct spi_device *spi)
+{
+ return bmc150_accel_core_remove(&spi->dev);
+}
+
+static const struct spi_device_id bmc150_accel_id[] = {
+ {"bmc150_accel", bmc150},
+ {"bmi055_accel", bmi055},
+ {"bma255", bma255},
+ {"bma250e", bma250e},
+ {"bma222e", bma222e},
+ {"bma280", bma280},
+ {}
+};
+
+MODULE_DEVICE_TABLE(spi, bmc150_accel_id);
+
+static struct spi_driver bmc150_accel_driver = {
+ .driver = {
+ .name = "bmc150_accel_spi",
+ .acpi_match_table = ACPI_PTR(bmc150_accel_acpi_match),
+ .pm = &bmc150_accel_pm_ops,
+ },
+ .probe = bmc150_accel_probe,
+ .remove = bmc150_accel_remove,
+ .id_table = bmc150_accel_id,
+};
+module_spi_driver(bmc150_accel_driver);
+
+MODULE_AUTHOR("Markus Pargmann <mpa@...gutronix.de>");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("BMC150 SPI accelerometer driver");
--
2.5.1
--
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