staging:iio:hmc5843: Add support for i2c hmc5983
This patch adds support for the hmc5983 i2c interface.
This chip is almost identical to the hmc5883. The difference being added
temperature compensation, additional available sample rate (220Hz) and an SPI
interface.
Signed-off-by: Josef Gajdusek <atx@atx.name>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
diff --git a/Documentation/devicetree/bindings/iio/magnetometer/hmc5843.txt b/Documentation/devicetree/bindings/iio/magnetometer/hmc5843.txt
index b8cbdd5..8e191ee 100644
--- a/Documentation/devicetree/bindings/iio/magnetometer/hmc5843.txt
+++ b/Documentation/devicetree/bindings/iio/magnetometer/hmc5843.txt
@@ -6,6 +6,7 @@
Other models which are supported with driver are:
"honeywell,hmc5883"
"honeywell,hmc5883l"
+ "honeywell,hmc5983"
- reg : the I2C address of the magnetometer - typically 0x1e
Optional properties:
diff --git a/drivers/staging/iio/magnetometer/Kconfig b/drivers/staging/iio/magnetometer/Kconfig
index 0a27f98..c086f33 100644
--- a/drivers/staging/iio/magnetometer/Kconfig
+++ b/drivers/staging/iio/magnetometer/Kconfig
@@ -20,6 +20,6 @@
This driver can also be compiled as a set of modules.
If so, these modules will be created:
- hmc5843_core (core functions)
- - hmc5843_i2c (support for HMC5843, HMC5883 and HMC5883L)
+ - hmc5843_i2c (support for HMC5843, HMC5883, HMC5883L and HMC5983)
endmenu
diff --git a/drivers/staging/iio/magnetometer/hmc5843.h b/drivers/staging/iio/magnetometer/hmc5843.h
index 06b2712..b784e3e 100644
--- a/drivers/staging/iio/magnetometer/hmc5843.h
+++ b/drivers/staging/iio/magnetometer/hmc5843.h
@@ -29,6 +29,7 @@
HMC5843_ID,
HMC5883_ID,
HMC5883L_ID,
+ HMC5983_ID,
};
struct hmc5843_data {
diff --git a/drivers/staging/iio/magnetometer/hmc5843_core.c b/drivers/staging/iio/magnetometer/hmc5843_core.c
index 08fb0be..914ae1a 100644
--- a/drivers/staging/iio/magnetometer/hmc5843_core.c
+++ b/drivers/staging/iio/magnetometer/hmc5843_core.c
@@ -101,6 +101,11 @@
{75, 0}
};
+static const int hmc5983_regval_to_samp_freq[][2] = {
+ {0, 750000}, {1, 500000}, {3, 0}, {7, 500000}, {15, 0}, {30, 0},
+ {75, 0}, {220, 0}
+};
+
/* Describe chip variants */
struct hmc5843_chip_info {
const struct iio_chan_spec *channels;
@@ -457,7 +462,7 @@
IIO_CHAN_SOFT_TIMESTAMP(3),
};
-/* Beware: Y and Z are exchanged on HMC5883 */
+/* Beware: Y and Z are exchanged on HMC5883 and 5983 */
static const struct iio_chan_spec hmc5883_channels[] = {
HMC5843_CHANNEL(X, 0),
HMC5843_CHANNEL(Z, 1),
@@ -504,6 +509,15 @@
.n_regval_to_nanoscale =
ARRAY_SIZE(hmc5883l_regval_to_nanoscale),
},
+ [HMC5983_ID] = {
+ .channels = hmc5883_channels,
+ .regval_to_samp_freq = hmc5983_regval_to_samp_freq,
+ .n_regval_to_samp_freq =
+ ARRAY_SIZE(hmc5983_regval_to_samp_freq),
+ .regval_to_nanoscale = hmc5883l_regval_to_nanoscale,
+ .n_regval_to_nanoscale =
+ ARRAY_SIZE(hmc5883l_regval_to_nanoscale),
+ }
};
static int hmc5843_init(struct hmc5843_data *data)
@@ -516,7 +530,7 @@
if (ret < 0)
return ret;
if (id[0] != 'H' || id[1] != '4' || id[2] != '3') {
- dev_err(data->dev, "no HMC5843/5883/5883L sensor\n");
+ dev_err(data->dev, "no HMC5843/5883/5883L/5983 sensor\n");
return -ENODEV;
}
@@ -620,5 +634,5 @@
EXPORT_SYMBOL(hmc5843_common_remove);
MODULE_AUTHOR("Shubhrajyoti Datta <shubhrajyoti@ti.com>");
-MODULE_DESCRIPTION("HMC5843/5883/5883L core driver");
+MODULE_DESCRIPTION("HMC5843/5883/5883L/5983 core driver");
MODULE_LICENSE("GPL");
diff --git a/drivers/staging/iio/magnetometer/hmc5843_i2c.c b/drivers/staging/iio/magnetometer/hmc5843_i2c.c
index 5593a7d..6acd614c 100644
--- a/drivers/staging/iio/magnetometer/hmc5843_i2c.c
+++ b/drivers/staging/iio/magnetometer/hmc5843_i2c.c
@@ -1,5 +1,5 @@
/*
- * i2c driver for hmc5843/5843/5883/5883l
+ * i2c driver for hmc5843/5843/5883/5883l/5983
*
* Split from hmc5843.c
* Copyright (C) Josef Gajdusek <atx@atx.name>
@@ -73,6 +73,7 @@
{ "hmc5843", HMC5843_ID },
{ "hmc5883", HMC5883_ID },
{ "hmc5883l", HMC5883L_ID },
+ { "hmc5983", HMC5983_ID },
{ }
};
MODULE_DEVICE_TABLE(i2c, hmc5843_id);
@@ -81,6 +82,7 @@
{ .compatible = "honeywell,hmc5843", .data = (void *)HMC5843_ID },
{ .compatible = "honeywell,hmc5883", .data = (void *)HMC5883_ID },
{ .compatible = "honeywell,hmc5883l", .data = (void *)HMC5883L_ID },
+ { .compatible = "honeywell,hmc5983", .data = (void *)HMC5983_ID },
{}
};
MODULE_DEVICE_TABLE(of, hmc5843_of_match);
@@ -98,5 +100,5 @@
module_i2c_driver(hmc5843_driver);
MODULE_AUTHOR("Josef Gajdusek <atx@atx.name>");
-MODULE_DESCRIPTION("HMC5843/5883/5883L i2c driver");
+MODULE_DESCRIPTION("HMC5843/5883/5883L/5983 i2c driver");
MODULE_LICENSE("GPL");
