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Groups > linux.kernel > #1210485 > unrolled thread
| Started by | Markus Pargmann <mpa@pengutronix.de> |
|---|---|
| First post | 2015-08-20 15:00 +0200 |
| Last post | 2015-09-01 16:20 +0200 |
| Articles | 11 — 3 participants |
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[PATCH v2 0/4] iio: bmc150 regmap and SPI Markus Pargmann <mpa@pengutronix.de> - 2015-08-20 15:00 +0200
[PATCH v2 3/4] iio: bmc150: Split the driver into core and i2c Markus Pargmann <mpa@pengutronix.de> - 2015-08-20 15:00 +0200
Re: [PATCH v2 3/4] iio: bmc150: Split the driver into core and i2c Jonathan Cameron <jic23@kernel.org> - 2015-08-31 18:20 +0200
Re: [PATCH v2 3/4] iio: bmc150: Split the driver into core and i2c Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> - 2015-09-01 16:10 +0200
[PATCH v2 1/4] iio: bmc150: Use i2c regmap Markus Pargmann <mpa@pengutronix.de> - 2015-08-20 15:00 +0200
Re: [PATCH v2 1/4] iio: bmc150: Use i2c regmap Jonathan Cameron <jic23@kernel.org> - 2015-08-31 18:20 +0200
Re: [PATCH v2 1/4] iio: bmc150: Use i2c regmap Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> - 2015-08-31 21:40 +0200
Re: [PATCH v2 1/4] iio: bmc150: Use i2c regmap Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> - 2015-09-01 16:00 +0200
[PATCH v2 4/4] iio: bmc150: Add SPI driver Markus Pargmann <mpa@pengutronix.de> - 2015-08-20 15:00 +0200
Re: [PATCH v2 4/4] iio: bmc150: Add SPI driver Jonathan Cameron <jic23@kernel.org> - 2015-08-31 18:20 +0200
Re: [PATCH v2 4/4] iio: bmc150: Add SPI driver Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> - 2015-09-01 16:20 +0200
| From | Markus Pargmann <mpa@pengutronix.de> |
|---|---|
| Date | 2015-08-20 15:00 +0200 |
| Subject | [PATCH v2 0/4] iio: bmc150 regmap and SPI |
| Message-ID | <pZxBM-5jT-23@gated-at.bofh.it> |
Hi,
this series converts the bmc150 driver to use regmap and adds an SPI interface.
In v1 this was part of the series "Regmap max_raw_io and bmc150 SPI support".
It now depends on "regmap: i2c block support".
Changes in v2:
- Removed default values for regmap_config fields.
- Redesigned the fifo_transfer function to avoid running in errors first.
- Dropped irq checks patch as it is already mainline
- Core can now be built as module with autoselection of i2c and spi parts
As my hardware is missing an interrupt line from the SPI connected bmc150 I am
not able to test the iio buffer code path and the i2c code path. Tests would be
appreciated.
Best regards,
Markus
Markus Pargmann (4):
iio: bmc150: Use i2c regmap
iio: bcm150: Remove i2c_client from private data
iio: bmc150: Split the driver into core and i2c
iio: bmc150: Add SPI driver
drivers/iio/accel/Kconfig | 14 +-
drivers/iio/accel/Makefile | 4 +-
.../accel/{bmc150-accel.c => bmc150-accel-core.c} | 398 ++++++++-------------
drivers/iio/accel/bmc150-accel-i2c.c | 99 +++++
drivers/iio/accel/bmc150-accel-spi.c | 83 +++++
drivers/iio/accel/bmc150-accel.h | 21 ++
6 files changed, 367 insertions(+), 252 deletions(-)
rename drivers/iio/accel/{bmc150-accel.c => bmc150-accel-core.c} (81%)
create mode 100644 drivers/iio/accel/bmc150-accel-i2c.c
create mode 100644 drivers/iio/accel/bmc150-accel-spi.c
create mode 100644 drivers/iio/accel/bmc150-accel.h
--
2.4.6
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| From | Markus Pargmann <mpa@pengutronix.de> |
|---|---|
| Date | 2015-08-20 15:00 +0200 |
| Subject | [PATCH v2 3/4] iio: bmc150: Split the driver into core and i2c |
| Message-ID | <pZxBO-5jT-67@gated-at.bofh.it> |
| In reply to | #1210485 |
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
---
drivers/iio/accel/Kconfig | 9 +-
drivers/iio/accel/Makefile | 3 +-
.../accel/{bmc150-accel.c => bmc150-accel-core.c} | 95 ++++-----------------
drivers/iio/accel/bmc150-accel-i2c.c | 99 ++++++++++++++++++++++
drivers/iio/accel/bmc150-accel.h | 21 +++++
5 files changed, 144 insertions(+), 83 deletions(-)
rename drivers/iio/accel/{bmc150-accel.c => bmc150-accel-core.c} (95%)
create mode 100644 drivers/iio/accel/bmc150-accel-i2c.c
create mode 100644 drivers/iio/accel/bmc150-accel.h
diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig
index 01dd03d194d1..6da4eb0db57b 100644
--- a/drivers/iio/accel/Kconfig
+++ b/drivers/iio/accel/Kconfig
@@ -19,21 +19,22 @@ config BMA180
config BMC150_ACCEL
tristate "Bosch BMC150 Accelerometer Driver"
- depends on I2C
select IIO_BUFFER
select IIO_TRIGGERED_BUFFER
select REGMAP
- select REGMAP_I2C
+ select BMC150_ACCEL_I2C if I2C
help
Say yes here to build support for the following Bosch accelerometers:
BMC150, BMI055, BMA250E, BMA222E, BMA255, BMA280.
- Currently this only supports the device via an i2c interface.
-
This is a combo module with both accelerometer and magnetometer.
This driver is only implementing accelerometer part, which has
its own address and register map.
+config BMC150_ACCEL_I2C
+ tristate
+ select REGMAP_I2C
+
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 ebd2675b2a02..5ef8bdbad092 100644
--- a/drivers/iio/accel/Makefile
+++ b/drivers/iio/accel/Makefile
@@ -4,7 +4,8 @@
# When adding new entries keep the list in alphabetical order
obj-$(CONFIG_BMA180) += bma180.o
-obj-$(CONFIG_BMC150_ACCEL) += bmc150-accel.o
+obj-$(CONFIG_BMC150_ACCEL) += bmc150-accel-core.o
+obj-$(CONFIG_BMC150_ACCEL_I2C) += bmc150-accel-i2c.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.c b/drivers/iio/accel/bmc150-accel-core.c
similarity index 95%
rename from drivers/iio/accel/bmc150-accel.c
rename to drivers/iio/accel/bmc150-accel-core.c
index e4a0691d9b88..614cf61f0110 100644
--- a/drivers/iio/accel/bmc150-accel.c
+++ b/drivers/iio/accel/bmc150-accel-core.c
@@ -37,6 +37,8 @@
#include <linux/iio/triggered_buffer.h>
#include <linux/regmap.h>
+#include "bmc150-accel.h"
+
#define BMC150_ACCEL_DRV_NAME "bmc150_accel"
#define BMC150_ACCEL_IRQ_NAME "bmc150_accel_event"
#define BMC150_ACCEL_GPIO_NAME "bmc150_accel_int"
@@ -187,7 +189,6 @@ enum bmc150_accel_trigger_id {
struct bmc150_accel_data {
struct regmap *regmap;
struct device *dev;
- int irq;
struct bmc150_accel_interrupt interrupts[BMC150_ACCEL_INTERRUPTS];
atomic_t active_intr;
struct bmc150_accel_trigger triggers[BMC150_ACCEL_TRIGGERS];
@@ -201,6 +202,7 @@ struct bmc150_accel_data {
int ev_enable_state;
int64_t timestamp, old_timestamp; /* Only used in hw fifo mode. */
const struct bmc150_accel_chip_info *chip_info;
+ int irq;
};
static const struct {
@@ -1070,15 +1072,6 @@ static const struct iio_chan_spec bmc150_accel_channels[] =
static const struct iio_chan_spec bma280_accel_channels[] =
BMC150_ACCEL_CHANNELS(14);
-enum {
- bmc150,
- bmi055,
- bma255,
- bma250e,
- bma222e,
- bma280,
-};
-
static const struct bmc150_accel_chip_info bmc150_accel_chip_info_tbl[] = {
[bmc150] = {
.chip_id = 0xFA,
@@ -1567,36 +1560,22 @@ static const struct iio_buffer_setup_ops bmc150_accel_buffer_ops = {
.postdisable = bmc150_accel_buffer_postdisable,
};
-static int bmc150_accel_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+int bmc150_accel_core_probe(struct device *dev, struct regmap *regmap, int irq,
+ const char *name, int chip_id, bool block_supported)
{
struct bmc150_accel_data *data;
struct iio_dev *indio_dev;
int ret;
- const char *name = NULL;
- int chip_id = 0;
- struct device *dev;
- indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
+ indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
if (!indio_dev)
return -ENOMEM;
data = iio_priv(indio_dev);
- i2c_set_clientdata(client, indio_dev);
- data->dev = &client->dev;
- dev = &client->dev;
- data->irq = client->irq;
-
- data->regmap = devm_regmap_init_i2c(client, &bmc150_i2c_regmap_conf);
- if (IS_ERR(data->regmap)) {
- dev_err(dev, "Failed to initialize i2c regmap\n");
- return PTR_ERR(data->regmap);
- }
-
- if (id) {
- name = id->name;
- chip_id = id->driver_data;
- }
+ dev_set_drvdata(dev, indio_dev);
+ data->dev = dev;
+ data->irq = irq;
+ data->regmap = regmap;
if (ACPI_HANDLE(dev))
name = bmc150_accel_match_acpi_device(dev, &chip_id);
@@ -1658,9 +1637,7 @@ static int bmc150_accel_probe(struct i2c_client *client,
if (ret)
goto err_buffer_cleanup;
- if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) ||
- i2c_check_functionality(client->adapter,
- I2C_FUNC_SMBUS_READ_I2C_BLOCK)) {
+ if (block_supported) {
indio_dev->modes |= INDIO_BUFFER_SOFTWARE;
indio_dev->info = &bmc150_accel_info_fifo;
indio_dev->buffer->attrs = bmc150_accel_fifo_attributes;
@@ -1669,7 +1646,7 @@ static int bmc150_accel_probe(struct i2c_client *client,
ret = iio_device_register(indio_dev);
if (ret < 0) {
- dev_err(data->dev, "Unable to register iio device\n");
+ dev_err(dev, "Unable to register iio device\n");
goto err_trigger_unregister;
}
@@ -1692,10 +1669,11 @@ err_buffer_cleanup:
return ret;
}
+EXPORT_SYMBOL_GPL(bmc150_accel_core_probe);
-static int bmc150_accel_remove(struct i2c_client *client)
+int bmc150_accel_core_remove(struct device *dev)
{
- struct iio_dev *indio_dev = i2c_get_clientdata(client);
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct bmc150_accel_data *data = iio_priv(indio_dev);
pm_runtime_disable(data->dev);
@@ -1714,6 +1692,7 @@ static int bmc150_accel_remove(struct i2c_client *client)
return 0;
}
+EXPORT_SYMBOL_GPL(bmc150_accel_core_remove);
#ifdef CONFIG_PM_SLEEP
static int bmc150_accel_suspend(struct device *dev)
@@ -1784,48 +1763,8 @@ static int bmc150_accel_runtime_resume(struct device *dev)
}
#endif
-static const struct dev_pm_ops bmc150_accel_pm_ops = {
+const struct dev_pm_ops bmc150_accel_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(bmc150_accel_suspend, bmc150_accel_resume)
SET_RUNTIME_PM_OPS(bmc150_accel_runtime_suspend,
bmc150_accel_runtime_resume, NULL)
};
-
-static const struct acpi_device_id bmc150_accel_acpi_match[] = {
- {"BSBA0150", bmc150},
- {"BMC150A", bmc150},
- {"BMI055A", bmi055},
- {"BMA0255", bma255},
- {"BMA250E", bma250e},
- {"BMA222E", bma222e},
- {"BMA0280", bma280},
- { },
-};
-MODULE_DEVICE_TABLE(acpi, bmc150_accel_acpi_match);
-
-static const struct i2c_device_id bmc150_accel_id[] = {
- {"bmc150_accel", bmc150},
- {"bmi055_accel", bmi055},
- {"bma255", bma255},
- {"bma250e", bma250e},
- {"bma222e", bma222e},
- {"bma280", bma280},
- {}
-};
-
-MODULE_DEVICE_TABLE(i2c, bmc150_accel_id);
-
-static struct i2c_driver bmc150_accel_driver = {
- .driver = {
- .name = BMC150_ACCEL_DRV_NAME,
- .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_i2c_driver(bmc150_accel_driver);
-
-MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("BMC150 accelerometer driver");
diff --git a/drivers/iio/accel/bmc150-accel-i2c.c b/drivers/iio/accel/bmc150-accel-i2c.c
new file mode 100644
index 000000000000..e4dd596ba8f2
--- /dev/null
+++ b/drivers/iio/accel/bmc150-accel-i2c.c
@@ -0,0 +1,99 @@
+/*
+ * 3-axis accelerometer driver supporting following I2C Bosch-Sensortec chips:
+ * - BMC150
+ * - BMI055
+ * - BMA255
+ * - BMA250E
+ * - BMA222E
+ * - BMA280
+ *
+ * Copyright (c) 2014, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ */
+
+#include <linux/device.h>
+#include <linux/mod_devicetable.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/acpi.h>
+#include <linux/regmap.h>
+
+#include "bmc150-accel.h"
+
+static const struct regmap_config bmc150_i2c_regmap_conf = {
+ .reg_bits = 8,
+ .val_bits = 8,
+};
+
+static int bmc150_accel_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct regmap *regmap;
+ bool block_supported =
+ i2c_check_functionality(client->adapter, I2C_FUNC_I2C) ||
+ i2c_check_functionality(client->adapter,
+ I2C_FUNC_SMBUS_READ_I2C_BLOCK);
+
+ regmap = devm_regmap_init_i2c(client, &bmc150_i2c_regmap_conf);
+ if (IS_ERR(regmap)) {
+ dev_err(&client->dev, "Failed to initialize i2c regmap\n");
+ return PTR_ERR(regmap);
+ }
+
+ return bmc150_accel_core_probe(&client->dev, regmap, client->irq,
+ id->name, id->driver_data,
+ block_supported);
+}
+
+static int bmc150_accel_remove(struct i2c_client *client)
+{
+ return bmc150_accel_core_remove(&client->dev);
+}
+
+static const struct acpi_device_id bmc150_accel_acpi_match[] = {
+ {"BSBA0150", bmc150},
+ {"BMC150A", bmc150},
+ {"BMI055A", bmi055},
+ {"BMA0255", bma255},
+ {"BMA250E", bma250e},
+ {"BMA222E", bma222e},
+ {"BMA0280", bma280},
+ { },
+};
+MODULE_DEVICE_TABLE(acpi, bmc150_accel_acpi_match);
+
+static const struct i2c_device_id bmc150_accel_id[] = {
+ {"bmc150_accel", bmc150},
+ {"bmi055_accel", bmi055},
+ {"bma255", bma255},
+ {"bma250e", bma250e},
+ {"bma222e", bma222e},
+ {"bma280", bma280},
+ {}
+};
+
+MODULE_DEVICE_TABLE(i2c, bmc150_accel_id);
+
+static struct i2c_driver bmc150_accel_driver = {
+ .driver = {
+ .name = "bmc150_accel_i2c",
+ .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_i2c_driver(bmc150_accel_driver);
+
+MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("BMC150 I2C accelerometer driver");
diff --git a/drivers/iio/accel/bmc150-accel.h b/drivers/iio/accel/bmc150-accel.h
new file mode 100644
index 000000000000..988b57573d0c
--- /dev/null
+++ b/drivers/iio/accel/bmc150-accel.h
@@ -0,0 +1,21 @@
+#ifndef _BMC150_ACCEL_H_
+#define _BMC150_ACCEL_H_
+
+struct regmap;
+
+enum {
+ bmc150,
+ bmi055,
+ bma255,
+ bma250e,
+ bma222e,
+ bma280,
+};
+
+int bmc150_accel_core_probe(struct device *dev, struct regmap *regmap, int irq,
+ const char *name, int chip_id,
+ bool block_supported);
+int bmc150_accel_core_remove(struct device *dev);
+extern const struct dev_pm_ops bmc150_accel_pm_ops;
+
+#endif /* _BMC150_ACCEL_H_ */
--
2.4.6
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[toc] | [prev] | [next] | [standalone]
| From | Jonathan Cameron <jic23@kernel.org> |
|---|---|
| Date | 2015-08-31 18:20 +0200 |
| Subject | Re: [PATCH v2 3/4] iio: bmc150: Split the driver into core and i2c |
| Message-ID | <q3zYm-4sz-17@gated-at.bofh.it> |
| In reply to | #1210487 |
On 20/08/15 13:49, Markus Pargmann wrote:
> Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
A couple of little bits inline. Again would like Srinivas to
take a quick look at this patch as well.
Thanks,
Jonathan
> ---
> drivers/iio/accel/Kconfig | 9 +-
> drivers/iio/accel/Makefile | 3 +-
> .../accel/{bmc150-accel.c => bmc150-accel-core.c} | 95 ++++-----------------
> drivers/iio/accel/bmc150-accel-i2c.c | 99 ++++++++++++++++++++++
> drivers/iio/accel/bmc150-accel.h | 21 +++++
> 5 files changed, 144 insertions(+), 83 deletions(-)
> rename drivers/iio/accel/{bmc150-accel.c => bmc150-accel-core.c} (95%)
> create mode 100644 drivers/iio/accel/bmc150-accel-i2c.c
> create mode 100644 drivers/iio/accel/bmc150-accel.h
>
> diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig
> index 01dd03d194d1..6da4eb0db57b 100644
> --- a/drivers/iio/accel/Kconfig
> +++ b/drivers/iio/accel/Kconfig
> @@ -19,21 +19,22 @@ config BMA180
>
> config BMC150_ACCEL
> tristate "Bosch BMC150 Accelerometer Driver"
> - depends on I2C
> select IIO_BUFFER
> select IIO_TRIGGERED_BUFFER
> select REGMAP
> - select REGMAP_I2C
> + select BMC150_ACCEL_I2C if I2C
> help
> Say yes here to build support for the following Bosch accelerometers:
> BMC150, BMI055, BMA250E, BMA222E, BMA255, BMA280.
>
> - Currently this only supports the device via an i2c interface.
> -
Well technically this is true until the next patch ;) I'll let that one go
though....
> This is a combo module with both accelerometer and magnetometer.
> This driver is only implementing accelerometer part, which has
> its own address and register map.
>
> +config BMC150_ACCEL_I2C
> + tristate
> + select REGMAP_I2C
> +
> 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 ebd2675b2a02..5ef8bdbad092 100644
> --- a/drivers/iio/accel/Makefile
> +++ b/drivers/iio/accel/Makefile
> @@ -4,7 +4,8 @@
>
> # When adding new entries keep the list in alphabetical order
> obj-$(CONFIG_BMA180) += bma180.o
> -obj-$(CONFIG_BMC150_ACCEL) += bmc150-accel.o
> +obj-$(CONFIG_BMC150_ACCEL) += bmc150-accel-core.o
> +obj-$(CONFIG_BMC150_ACCEL_I2C) += bmc150-accel-i2c.o
> obj-$(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.c b/drivers/iio/accel/bmc150-accel-core.c
> similarity index 95%
> rename from drivers/iio/accel/bmc150-accel.c
> rename to drivers/iio/accel/bmc150-accel-core.c
> index e4a0691d9b88..614cf61f0110 100644
> --- a/drivers/iio/accel/bmc150-accel.c
> +++ b/drivers/iio/accel/bmc150-accel-core.c
> @@ -37,6 +37,8 @@
> #include <linux/iio/triggered_buffer.h>
> #include <linux/regmap.h>
>
> +#include "bmc150-accel.h"
> +
> #define BMC150_ACCEL_DRV_NAME "bmc150_accel"
> #define BMC150_ACCEL_IRQ_NAME "bmc150_accel_event"
> #define BMC150_ACCEL_GPIO_NAME "bmc150_accel_int"
> @@ -187,7 +189,6 @@ enum bmc150_accel_trigger_id {
> struct bmc150_accel_data {
> struct regmap *regmap;
> struct device *dev;
> - int irq;
> struct bmc150_accel_interrupt interrupts[BMC150_ACCEL_INTERRUPTS];
> atomic_t active_intr;
> struct bmc150_accel_trigger triggers[BMC150_ACCEL_TRIGGERS];
> @@ -201,6 +202,7 @@ struct bmc150_accel_data {
> int ev_enable_state;
> int64_t timestamp, old_timestamp; /* Only used in hw fifo mode. */
> const struct bmc150_accel_chip_info *chip_info;
> + int irq;
Why move the location of this element of the structure?
> };
>
> static const struct {
> @@ -1070,15 +1072,6 @@ static const struct iio_chan_spec bmc150_accel_channels[] =
> static const struct iio_chan_spec bma280_accel_channels[] =
> BMC150_ACCEL_CHANNELS(14);
>
> -enum {
> - bmc150,
> - bmi055,
> - bma255,
> - bma250e,
> - bma222e,
> - bma280,
> -};
> -
> static const struct bmc150_accel_chip_info bmc150_accel_chip_info_tbl[] = {
> [bmc150] = {
> .chip_id = 0xFA,
> @@ -1567,36 +1560,22 @@ static const struct iio_buffer_setup_ops bmc150_accel_buffer_ops = {
> .postdisable = bmc150_accel_buffer_postdisable,
> };
>
> -static int bmc150_accel_probe(struct i2c_client *client,
> - const struct i2c_device_id *id)
> +int bmc150_accel_core_probe(struct device *dev, struct regmap *regmap, int irq,
> + const char *name, int chip_id, bool block_supported)
> {
> struct bmc150_accel_data *data;
> struct iio_dev *indio_dev;
> int ret;
> - const char *name = NULL;
> - int chip_id = 0;
> - struct device *dev;
>
> - indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
> + indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
> if (!indio_dev)
> return -ENOMEM;
>
> data = iio_priv(indio_dev);
> - i2c_set_clientdata(client, indio_dev);
> - data->dev = &client->dev;
> - dev = &client->dev;
> - data->irq = client->irq;
> -
> - data->regmap = devm_regmap_init_i2c(client, &bmc150_i2c_regmap_conf);
> - if (IS_ERR(data->regmap)) {
> - dev_err(dev, "Failed to initialize i2c regmap\n");
> - return PTR_ERR(data->regmap);
> - }
> -
> - if (id) {
> - name = id->name;
> - chip_id = id->driver_data;
> - }
> + dev_set_drvdata(dev, indio_dev);
> + data->dev = dev;
> + data->irq = irq;
> + data->regmap = regmap;
>
> if (ACPI_HANDLE(dev))
> name = bmc150_accel_match_acpi_device(dev, &chip_id);
> @@ -1658,9 +1637,7 @@ static int bmc150_accel_probe(struct i2c_client *client,
> if (ret)
> goto err_buffer_cleanup;
>
> - if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) ||
> - i2c_check_functionality(client->adapter,
> - I2C_FUNC_SMBUS_READ_I2C_BLOCK)) {
> + if (block_supported) {
> indio_dev->modes |= INDIO_BUFFER_SOFTWARE;
> indio_dev->info = &bmc150_accel_info_fifo;
> indio_dev->buffer->attrs = bmc150_accel_fifo_attributes;
> @@ -1669,7 +1646,7 @@ static int bmc150_accel_probe(struct i2c_client *client,
>
> ret = iio_device_register(indio_dev);
> if (ret < 0) {
> - dev_err(data->dev, "Unable to register iio device\n");
> + dev_err(dev, "Unable to register iio device\n");
> goto err_trigger_unregister;
> }
>
> @@ -1692,10 +1669,11 @@ err_buffer_cleanup:
>
> return ret;
> }
> +EXPORT_SYMBOL_GPL(bmc150_accel_core_probe);
>
> -static int bmc150_accel_remove(struct i2c_client *client)
> +int bmc150_accel_core_remove(struct device *dev)
> {
> - struct iio_dev *indio_dev = i2c_get_clientdata(client);
> + struct iio_dev *indio_dev = dev_get_drvdata(dev);
> struct bmc150_accel_data *data = iio_priv(indio_dev);
>
> pm_runtime_disable(data->dev);
> @@ -1714,6 +1692,7 @@ static int bmc150_accel_remove(struct i2c_client *client)
>
> return 0;
> }
> +EXPORT_SYMBOL_GPL(bmc150_accel_core_remove);
>
> #ifdef CONFIG_PM_SLEEP
> static int bmc150_accel_suspend(struct device *dev)
> @@ -1784,48 +1763,8 @@ static int bmc150_accel_runtime_resume(struct device *dev)
> }
> #endif
>
> -static const struct dev_pm_ops bmc150_accel_pm_ops = {
> +const struct dev_pm_ops bmc150_accel_pm_ops = {
> SET_SYSTEM_SLEEP_PM_OPS(bmc150_accel_suspend, bmc150_accel_resume)
> SET_RUNTIME_PM_OPS(bmc150_accel_runtime_suspend,
> bmc150_accel_runtime_resume, NULL)
> };
> -
> -static const struct acpi_device_id bmc150_accel_acpi_match[] = {
> - {"BSBA0150", bmc150},
> - {"BMC150A", bmc150},
> - {"BMI055A", bmi055},
> - {"BMA0255", bma255},
> - {"BMA250E", bma250e},
> - {"BMA222E", bma222e},
> - {"BMA0280", bma280},
> - { },
> -};
> -MODULE_DEVICE_TABLE(acpi, bmc150_accel_acpi_match);
> -
> -static const struct i2c_device_id bmc150_accel_id[] = {
> - {"bmc150_accel", bmc150},
> - {"bmi055_accel", bmi055},
> - {"bma255", bma255},
> - {"bma250e", bma250e},
> - {"bma222e", bma222e},
> - {"bma280", bma280},
> - {}
> -};
> -
> -MODULE_DEVICE_TABLE(i2c, bmc150_accel_id);
> -
> -static struct i2c_driver bmc150_accel_driver = {
> - .driver = {
> - .name = BMC150_ACCEL_DRV_NAME,
> - .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_i2c_driver(bmc150_accel_driver);
> -
> -MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
> -MODULE_LICENSE("GPL v2");
> -MODULE_DESCRIPTION("BMC150 accelerometer driver");
Note we have a core module now so it wants this stuff to still be there.
> diff --git a/drivers/iio/accel/bmc150-accel-i2c.c b/drivers/iio/accel/bmc150-accel-i2c.c
> new file mode 100644
> index 000000000000..e4dd596ba8f2
> --- /dev/null
> +++ b/drivers/iio/accel/bmc150-accel-i2c.c
> @@ -0,0 +1,99 @@
> +/*
> + * 3-axis accelerometer driver supporting following I2C Bosch-Sensortec chips:
> + * - BMC150
> + * - BMI055
> + * - BMA255
> + * - BMA250E
> + * - BMA222E
> + * - BMA280
> + *
> + * Copyright (c) 2014, Intel Corporation.
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms and conditions of the GNU General Public License,
> + * version 2, as published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope 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.
> + */
> +
> +#include <linux/device.h>
> +#include <linux/mod_devicetable.h>
> +#include <linux/i2c.h>
> +#include <linux/module.h>
> +#include <linux/acpi.h>
> +#include <linux/regmap.h>
> +
> +#include "bmc150-accel.h"
> +
> +static const struct regmap_config bmc150_i2c_regmap_conf = {
> + .reg_bits = 8,
> + .val_bits = 8,
> +};
> +
> +static int bmc150_accel_probe(struct i2c_client *client,
> + const struct i2c_device_id *id)
> +{
> + struct regmap *regmap;
> + bool block_supported =
> + i2c_check_functionality(client->adapter, I2C_FUNC_I2C) ||
> + i2c_check_functionality(client->adapter,
> + I2C_FUNC_SMBUS_READ_I2C_BLOCK);
> +
> + regmap = devm_regmap_init_i2c(client, &bmc150_i2c_regmap_conf);
> + if (IS_ERR(regmap)) {
> + dev_err(&client->dev, "Failed to initialize i2c regmap\n");
> + return PTR_ERR(regmap);
> + }
> +
> + return bmc150_accel_core_probe(&client->dev, regmap, client->irq,
> + id->name, id->driver_data,
> + block_supported);
> +}
> +
> +static int bmc150_accel_remove(struct i2c_client *client)
> +{
> + return bmc150_accel_core_remove(&client->dev);
> +}
> +
> +static const struct acpi_device_id bmc150_accel_acpi_match[] = {
> + {"BSBA0150", bmc150},
> + {"BMC150A", bmc150},
> + {"BMI055A", bmi055},
> + {"BMA0255", bma255},
> + {"BMA250E", bma250e},
> + {"BMA222E", bma222e},
> + {"BMA0280", bma280},
> + { },
> +};
> +MODULE_DEVICE_TABLE(acpi, bmc150_accel_acpi_match);
> +
> +static const struct i2c_device_id bmc150_accel_id[] = {
> + {"bmc150_accel", bmc150},
> + {"bmi055_accel", bmi055},
> + {"bma255", bma255},
> + {"bma250e", bma250e},
> + {"bma222e", bma222e},
> + {"bma280", bma280},
> + {}
> +};
> +
> +MODULE_DEVICE_TABLE(i2c, bmc150_accel_id);
> +
> +static struct i2c_driver bmc150_accel_driver = {
> + .driver = {
> + .name = "bmc150_accel_i2c",
> + .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_i2c_driver(bmc150_accel_driver);
> +
> +MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
> +MODULE_LICENSE("GPL v2");
> +MODULE_DESCRIPTION("BMC150 I2C accelerometer driver");
> diff --git a/drivers/iio/accel/bmc150-accel.h b/drivers/iio/accel/bmc150-accel.h
> new file mode 100644
> index 000000000000..988b57573d0c
> --- /dev/null
> +++ b/drivers/iio/accel/bmc150-accel.h
> @@ -0,0 +1,21 @@
> +#ifndef _BMC150_ACCEL_H_
> +#define _BMC150_ACCEL_H_
> +
> +struct regmap;
> +
> +enum {
> + bmc150,
> + bmi055,
> + bma255,
> + bma250e,
> + bma222e,
> + bma280,
> +};
> +
> +int bmc150_accel_core_probe(struct device *dev, struct regmap *regmap, int irq,
> + const char *name, int chip_id,
> + bool block_supported);
> +int bmc150_accel_core_remove(struct device *dev);
> +extern const struct dev_pm_ops bmc150_accel_pm_ops;
> +
> +#endif /* _BMC150_ACCEL_H_ */
>
--
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[toc] | [prev] | [next] | [standalone]
| From | Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> |
|---|---|
| Date | 2015-09-01 16:10 +0200 |
| Subject | Re: [PATCH v2 3/4] iio: bmc150: Split the driver into core and i2c |
| Message-ID | <q3Uq5-kF-9@gated-at.bofh.it> |
| In reply to | #1216297 |
On Mon, 2015-08-31 at 17:15 +0100, Jonathan Cameron wrote:
> On 20/08/15 13:49, Markus Pargmann wrote:
> > Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
> A couple of little bits inline. Again would like Srinivas to
> take a quick look at this patch as well.
Once your comments are addressed, it looks fine to me.
Thanks,
Srinivas
>
> Jonathan
> > ---
> > drivers/iio/accel/Kconfig | 9 +-
> > drivers/iio/accel/Makefile | 3 +-
> > .../accel/{bmc150-accel.c => bmc150-accel-core.c} | 95 ++++------
> > -----------
> > drivers/iio/accel/bmc150-accel-i2c.c | 99
> > ++++++++++++++++++++++
> > drivers/iio/accel/bmc150-accel.h | 21 +++++
> > 5 files changed, 144 insertions(+), 83 deletions(-)
> > rename drivers/iio/accel/{bmc150-accel.c => bmc150-accel-core.c}
> > (95%)
> > create mode 100644 drivers/iio/accel/bmc150-accel-i2c.c
> > create mode 100644 drivers/iio/accel/bmc150-accel.h
> >
> > diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig
> > index 01dd03d194d1..6da4eb0db57b 100644
> > --- a/drivers/iio/accel/Kconfig
> > +++ b/drivers/iio/accel/Kconfig
> > @@ -19,21 +19,22 @@ config BMA180
> >
> > config BMC150_ACCEL
> > tristate "Bosch BMC150 Accelerometer Driver"
> > - depends on I2C
> > select IIO_BUFFER
> > select IIO_TRIGGERED_BUFFER
> > select REGMAP
> > - select REGMAP_I2C
> > + select BMC150_ACCEL_I2C if I2C
> > help
> > Say yes here to build support for the following Bosch
> > accelerometers:
> > BMC150, BMI055, BMA250E, BMA222E, BMA255, BMA280.
> >
> > - Currently this only supports the device via an i2c
> > interface.
> > -
> Well technically this is true until the next patch ;) I'll let that
> one go
> though....
> > This is a combo module with both accelerometer and
> > magnetometer.
> > This driver is only implementing accelerometer part,
> > which has
> > its own address and register map.
> >
> > +config BMC150_ACCEL_I2C
> > + tristate
> > + select REGMAP_I2C
> > +
> > 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 ebd2675b2a02..5ef8bdbad092 100644
> > --- a/drivers/iio/accel/Makefile
> > +++ b/drivers/iio/accel/Makefile
> > @@ -4,7 +4,8 @@
> >
> > # When adding new entries keep the list in alphabetical order
> > obj-$(CONFIG_BMA180) += bma180.o
> > -obj-$(CONFIG_BMC150_ACCEL) += bmc150-accel.o
> > +obj-$(CONFIG_BMC150_ACCEL) += bmc150-accel-core.o
> > +obj-$(CONFIG_BMC150_ACCEL_I2C) += bmc150-accel-i2c.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.c
> > b/drivers/iio/accel/bmc150-accel-core.c
> > similarity index 95%
> > rename from drivers/iio/accel/bmc150-accel.c
> > rename to drivers/iio/accel/bmc150-accel-core.c
> > index e4a0691d9b88..614cf61f0110 100644
> > --- a/drivers/iio/accel/bmc150-accel.c
> > +++ b/drivers/iio/accel/bmc150-accel-core.c
> > @@ -37,6 +37,8 @@
> > #include <linux/iio/triggered_buffer.h>
> > #include <linux/regmap.h>
> >
> > +#include "bmc150-accel.h"
> > +
> > #define BMC150_ACCEL_DRV_NAME "bmc150_accel
> > "
> > #define BMC150_ACCEL_IRQ_NAME "bmc150_accel
> > _event"
> > #define BMC150_ACCEL_GPIO_NAME "bmc150_acce
> > l_int"
> > @@ -187,7 +189,6 @@ enum bmc150_accel_trigger_id {
> > struct bmc150_accel_data {
> > struct regmap *regmap;
> > struct device *dev;
> > - int irq;
> > struct bmc150_accel_interrupt
> > interrupts[BMC150_ACCEL_INTERRUPTS];
> > atomic_t active_intr;
> > struct bmc150_accel_trigger
> > triggers[BMC150_ACCEL_TRIGGERS];
> > @@ -201,6 +202,7 @@ struct bmc150_accel_data {
> > int ev_enable_state;
> > int64_t timestamp, old_timestamp; /* Only used in hw fifo
> > mode. */
> > const struct bmc150_accel_chip_info *chip_info;
> > + int irq;
> Why move the location of this element of the structure?
>
> > };
> >
> > static const struct {
> > @@ -1070,15 +1072,6 @@ static const struct iio_chan_spec
> > bmc150_accel_channels[] =
> > static const struct iio_chan_spec bma280_accel_channels[] =
> > BMC150_ACCEL_CHANNELS(14);
> >
> > -enum {
> > - bmc150,
> > - bmi055,
> > - bma255,
> > - bma250e,
> > - bma222e,
> > - bma280,
> > -};
> > -
> > static const struct bmc150_accel_chip_info
> > bmc150_accel_chip_info_tbl[] = {
> > [bmc150] = {
> > .chip_id = 0xFA,
> > @@ -1567,36 +1560,22 @@ static const struct iio_buffer_setup_ops
> > bmc150_accel_buffer_ops = {
> > .postdisable = bmc150_accel_buffer_postdisable,
> > };
> >
> > -static int bmc150_accel_probe(struct i2c_client *client,
> > - const struct i2c_device_id *id)
> > +int bmc150_accel_core_probe(struct device *dev, struct regmap
> > *regmap, int irq,
> > + const char *name, int chip_id, bool
> > block_supported)
> > {
> > struct bmc150_accel_data *data;
> > struct iio_dev *indio_dev;
> > int ret;
> > - const char *name = NULL;
> > - int chip_id = 0;
> > - struct device *dev;
> >
> > - indio_dev = devm_iio_device_alloc(&client->dev,
> > sizeof(*data));
> > + indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
> > if (!indio_dev)
> > return -ENOMEM;
> >
> > data = iio_priv(indio_dev);
> > - i2c_set_clientdata(client, indio_dev);
> > - data->dev = &client->dev;
> > - dev = &client->dev;
> > - data->irq = client->irq;
> > -
> > - data->regmap = devm_regmap_init_i2c(client,
> > &bmc150_i2c_regmap_conf);
> > - if (IS_ERR(data->regmap)) {
> > - dev_err(dev, "Failed to initialize i2c regmap\n");
> > - return PTR_ERR(data->regmap);
> > - }
> > -
> > - if (id) {
> > - name = id->name;
> > - chip_id = id->driver_data;
> > - }
> > + dev_set_drvdata(dev, indio_dev);
> > + data->dev = dev;
> > + data->irq = irq;
> > + data->regmap = regmap;
> >
> > if (ACPI_HANDLE(dev))
> > name = bmc150_accel_match_acpi_device(dev,
> > &chip_id);
> > @@ -1658,9 +1637,7 @@ static int bmc150_accel_probe(struct
> > i2c_client *client,
> > if (ret)
> > goto err_buffer_cleanup;
> >
> > - if (i2c_check_functionality(client->adapter,
> > I2C_FUNC_I2C) ||
> > - i2c_check_functionality(client->adapter,
> > -
> > I2C_FUNC_SMBUS_READ_I2C_BLOCK)) {
> > + if (block_supported) {
> > indio_dev->modes |= INDIO_BUFFER_SOFTWARE;
> > indio_dev->info = &bmc150_accel_info_fifo;
> > indio_dev->buffer->attrs =
> > bmc150_accel_fifo_attributes;
> > @@ -1669,7 +1646,7 @@ static int bmc150_accel_probe(struct
> > i2c_client *client,
> >
> > ret = iio_device_register(indio_dev);
> > if (ret < 0) {
> > - dev_err(data->dev, "Unable to register iio
> > device\n");
> > + dev_err(dev, "Unable to register iio device\n");
> > goto err_trigger_unregister;
> > }
> >
> > @@ -1692,10 +1669,11 @@ err_buffer_cleanup:
> >
> > return ret;
> > }
> > +EXPORT_SYMBOL_GPL(bmc150_accel_core_probe);
> >
> > -static int bmc150_accel_remove(struct i2c_client *client)
> > +int bmc150_accel_core_remove(struct device *dev)
> > {
> > - struct iio_dev *indio_dev = i2c_get_clientdata(client);
> > + struct iio_dev *indio_dev = dev_get_drvdata(dev);
> > struct bmc150_accel_data *data = iio_priv(indio_dev);
> >
> > pm_runtime_disable(data->dev);
> > @@ -1714,6 +1692,7 @@ static int bmc150_accel_remove(struct
> > i2c_client *client)
> >
> > return 0;
> > }
> > +EXPORT_SYMBOL_GPL(bmc150_accel_core_remove);
> >
> > #ifdef CONFIG_PM_SLEEP
> > static int bmc150_accel_suspend(struct device *dev)
> > @@ -1784,48 +1763,8 @@ static int
> > bmc150_accel_runtime_resume(struct device *dev)
> > }
> > #endif
> >
> > -static const struct dev_pm_ops bmc150_accel_pm_ops = {
> > +const struct dev_pm_ops bmc150_accel_pm_ops = {
> > SET_SYSTEM_SLEEP_PM_OPS(bmc150_accel_suspend,
> > bmc150_accel_resume)
> > SET_RUNTIME_PM_OPS(bmc150_accel_runtime_suspend,
> > bmc150_accel_runtime_resume, NULL)
> > };
> > -
> > -static const struct acpi_device_id bmc150_accel_acpi_match[] = {
> > - {"BSBA0150", bmc150},
> > - {"BMC150A", bmc150},
> > - {"BMI055A", bmi055},
> > - {"BMA0255", bma255},
> > - {"BMA250E", bma250e},
> > - {"BMA222E", bma222e},
> > - {"BMA0280", bma280},
> > - { },
> > -};
> > -MODULE_DEVICE_TABLE(acpi, bmc150_accel_acpi_match);
> > -
> > -static const struct i2c_device_id bmc150_accel_id[] = {
> > - {"bmc150_accel", bmc150},
> > - {"bmi055_accel", bmi055},
> > - {"bma255", bma255},
> > - {"bma250e", bma250e},
> > - {"bma222e", bma222e},
> > - {"bma280", bma280},
> > - {}
> > -};
> > -
> > -MODULE_DEVICE_TABLE(i2c, bmc150_accel_id);
> > -
> > -static struct i2c_driver bmc150_accel_driver = {
> > - .driver = {
> > - .name = BMC150_ACCEL_DRV_NAME,
> > - .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_i2c_driver(bmc150_accel_driver);
> > -
> > -MODULE_AUTHOR("Srinivas Pandruvada <
> > srinivas.pandruvada@linux.intel.com>");
> > -MODULE_LICENSE("GPL v2");
> > -MODULE_DESCRIPTION("BMC150 accelerometer driver");
> Note we have a core module now so it wants this stuff to still be
> there.
>
> > diff --git a/drivers/iio/accel/bmc150-accel-i2c.c
> > b/drivers/iio/accel/bmc150-accel-i2c.c
> > new file mode 100644
> > index 000000000000..e4dd596ba8f2
> > --- /dev/null
> > +++ b/drivers/iio/accel/bmc150-accel-i2c.c
> > @@ -0,0 +1,99 @@
> > +/*
> > + * 3-axis accelerometer driver supporting following I2C Bosch
> > -Sensortec chips:
> > + * - BMC150
> > + * - BMI055
> > + * - BMA255
> > + * - BMA250E
> > + * - BMA222E
> > + * - BMA280
> > + *
> > + * Copyright (c) 2014, Intel Corporation.
> > + *
> > + * This program is free software; you can redistribute it and/or
> > modify it
> > + * under the terms and conditions of the GNU General Public
> > License,
> > + * version 2, as published by the Free Software Foundation.
> > + *
> > + * This program is distributed in the hope 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.
> > + */
> > +
> > +#include <linux/device.h>
> > +#include <linux/mod_devicetable.h>
> > +#include <linux/i2c.h>
> > +#include <linux/module.h>
> > +#include <linux/acpi.h>
> > +#include <linux/regmap.h>
> > +
> > +#include "bmc150-accel.h"
> > +
> > +static const struct regmap_config bmc150_i2c_regmap_conf = {
> > + .reg_bits = 8,
> > + .val_bits = 8,
> > +};
> > +
> > +static int bmc150_accel_probe(struct i2c_client *client,
> > + const struct i2c_device_id *id)
> > +{
> > + struct regmap *regmap;
> > + bool block_supported =
> > + i2c_check_functionality(client->adapter,
> > I2C_FUNC_I2C) ||
> > + i2c_check_functionality(client->adapter,
> > + I2C_FUNC_SMBUS_READ_I2C_BL
> > OCK);
> > +
> > + regmap = devm_regmap_init_i2c(client,
> > &bmc150_i2c_regmap_conf);
> > + if (IS_ERR(regmap)) {
> > + dev_err(&client->dev, "Failed to initialize i2c
> > regmap\n");
> > + return PTR_ERR(regmap);
> > + }
> > +
> > + return bmc150_accel_core_probe(&client->dev, regmap,
> > client->irq,
> > + id->name, id->driver_data,
> > + block_supported);
> > +}
> > +
> > +static int bmc150_accel_remove(struct i2c_client *client)
> > +{
> > + return bmc150_accel_core_remove(&client->dev);
> > +}
> > +
> > +static const struct acpi_device_id bmc150_accel_acpi_match[] = {
> > + {"BSBA0150", bmc150},
> > + {"BMC150A", bmc150},
> > + {"BMI055A", bmi055},
> > + {"BMA0255", bma255},
> > + {"BMA250E", bma250e},
> > + {"BMA222E", bma222e},
> > + {"BMA0280", bma280},
> > + { },
> > +};
> > +MODULE_DEVICE_TABLE(acpi, bmc150_accel_acpi_match);
> > +
> > +static const struct i2c_device_id bmc150_accel_id[] = {
> > + {"bmc150_accel", bmc150},
> > + {"bmi055_accel", bmi055},
> > + {"bma255", bma255},
> > + {"bma250e", bma250e},
> > + {"bma222e", bma222e},
> > + {"bma280", bma280},
> > + {}
> > +};
> > +
> > +MODULE_DEVICE_TABLE(i2c, bmc150_accel_id);
> > +
> > +static struct i2c_driver bmc150_accel_driver = {
> > + .driver = {
> > + .name = "bmc150_accel_i2c",
> > + .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_i2c_driver(bmc150_accel_driver);
> > +
> > +MODULE_AUTHOR("Srinivas Pandruvada <
> > srinivas.pandruvada@linux.intel.com>");
> > +MODULE_LICENSE("GPL v2");
> > +MODULE_DESCRIPTION("BMC150 I2C accelerometer driver");
> > diff --git a/drivers/iio/accel/bmc150-accel.h
> > b/drivers/iio/accel/bmc150-accel.h
> > new file mode 100644
> > index 000000000000..988b57573d0c
> > --- /dev/null
> > +++ b/drivers/iio/accel/bmc150-accel.h
> > @@ -0,0 +1,21 @@
> > +#ifndef _BMC150_ACCEL_H_
> > +#define _BMC150_ACCEL_H_
> > +
> > +struct regmap;
> > +
> > +enum {
> > + bmc150,
> > + bmi055,
> > + bma255,
> > + bma250e,
> > + bma222e,
> > + bma280,
> > +};
> > +
> > +int bmc150_accel_core_probe(struct device *dev, struct regmap
> > *regmap, int irq,
> > + const char *name, int chip_id,
> > + bool block_supported);
> > +int bmc150_accel_core_remove(struct device *dev);
> > +extern const struct dev_pm_ops bmc150_accel_pm_ops;
> > +
> > +#endif /* _BMC150_ACCEL_H_ */
> >
>
--
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| From | Markus Pargmann <mpa@pengutronix.de> |
|---|---|
| Date | 2015-08-20 15:00 +0200 |
| Subject | [PATCH v2 1/4] iio: bmc150: Use i2c regmap |
| Message-ID | <pZxBP-5jT-89@gated-at.bofh.it> |
| In reply to | #1210485 |
This replaces all usage of direct i2c accesses with regmap accesses.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
---
drivers/iio/accel/Kconfig | 2 +
drivers/iio/accel/bmc150-accel.c | 219 +++++++++++++++++----------------------
2 files changed, 95 insertions(+), 126 deletions(-)
diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig
index 00e7bcbdbe24..01dd03d194d1 100644
--- a/drivers/iio/accel/Kconfig
+++ b/drivers/iio/accel/Kconfig
@@ -22,6 +22,8 @@ config BMC150_ACCEL
depends on I2C
select IIO_BUFFER
select IIO_TRIGGERED_BUFFER
+ select REGMAP
+ select REGMAP_I2C
help
Say yes here to build support for the following Bosch accelerometers:
BMC150, BMI055, BMA250E, BMA222E, BMA255, BMA280.
diff --git a/drivers/iio/accel/bmc150-accel.c b/drivers/iio/accel/bmc150-accel.c
index 55751d9e1ade..c5c773e75173 100644
--- a/drivers/iio/accel/bmc150-accel.c
+++ b/drivers/iio/accel/bmc150-accel.c
@@ -35,6 +35,7 @@
#include <linux/iio/trigger.h>
#include <linux/iio/trigger_consumer.h>
#include <linux/iio/triggered_buffer.h>
+#include <linux/regmap.h>
#define BMC150_ACCEL_DRV_NAME "bmc150_accel"
#define BMC150_ACCEL_IRQ_NAME "bmc150_accel_event"
@@ -185,6 +186,8 @@ enum bmc150_accel_trigger_id {
struct bmc150_accel_data {
struct i2c_client *client;
+ struct regmap *regmap;
+ struct device *dev;
struct bmc150_accel_interrupt interrupts[BMC150_ACCEL_INTERRUPTS];
atomic_t active_intr;
struct bmc150_accel_trigger triggers[BMC150_ACCEL_TRIGGERS];
@@ -241,6 +244,11 @@ static const struct {
{500000, BMC150_ACCEL_SLEEP_500_MS},
{1000000, BMC150_ACCEL_SLEEP_1_SEC} };
+static const struct regmap_config bmc150_i2c_regmap_conf = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = 0x3f,
+};
static int bmc150_accel_set_mode(struct bmc150_accel_data *data,
enum bmc150_power_modes mode,
@@ -270,8 +278,7 @@ static int bmc150_accel_set_mode(struct bmc150_accel_data *data,
dev_dbg(&data->client->dev, "Set Mode bits %x\n", lpw_bits);
- ret = i2c_smbus_write_byte_data(data->client,
- BMC150_ACCEL_REG_PMU_LPW, lpw_bits);
+ ret = regmap_write(data->regmap, BMC150_ACCEL_REG_PMU_LPW, lpw_bits);
if (ret < 0) {
dev_err(&data->client->dev, "Error writing reg_pmu_lpw\n");
return ret;
@@ -289,8 +296,7 @@ static int bmc150_accel_set_bw(struct bmc150_accel_data *data, int val,
for (i = 0; i < ARRAY_SIZE(bmc150_accel_samp_freq_table); ++i) {
if (bmc150_accel_samp_freq_table[i].val == val &&
bmc150_accel_samp_freq_table[i].val2 == val2) {
- ret = i2c_smbus_write_byte_data(
- data->client,
+ ret = regmap_write(data->regmap,
BMC150_ACCEL_REG_PMU_BW,
bmc150_accel_samp_freq_table[i].bw_bits);
if (ret < 0)
@@ -307,26 +313,19 @@ static int bmc150_accel_set_bw(struct bmc150_accel_data *data, int val,
static int bmc150_accel_update_slope(struct bmc150_accel_data *data)
{
- int ret, val;
+ int ret;
- ret = i2c_smbus_write_byte_data(data->client, BMC150_ACCEL_REG_INT_6,
+ ret = regmap_write(data->regmap, BMC150_ACCEL_REG_INT_6,
data->slope_thres);
if (ret < 0) {
dev_err(&data->client->dev, "Error writing reg_int_6\n");
return ret;
}
- ret = i2c_smbus_read_byte_data(data->client, BMC150_ACCEL_REG_INT_5);
+ ret = regmap_update_bits(data->regmap, BMC150_ACCEL_REG_INT_5,
+ BMC150_ACCEL_SLOPE_DUR_MASK, data->slope_dur);
if (ret < 0) {
- dev_err(&data->client->dev, "Error reading reg_int_5\n");
- return ret;
- }
-
- val = (ret & ~BMC150_ACCEL_SLOPE_DUR_MASK) | data->slope_dur;
- ret = i2c_smbus_write_byte_data(data->client, BMC150_ACCEL_REG_INT_5,
- val);
- if (ret < 0) {
- dev_err(&data->client->dev, "Error write reg_int_5\n");
+ dev_err(&data->client->dev, "Error updating reg_int_5\n");
return ret;
}
@@ -348,17 +347,18 @@ static int bmc150_accel_any_motion_setup(struct bmc150_accel_trigger *t,
static int bmc150_accel_chip_init(struct bmc150_accel_data *data)
{
int ret;
+ unsigned int val;
- ret = i2c_smbus_read_byte_data(data->client, BMC150_ACCEL_REG_CHIP_ID);
+ ret = regmap_read(data->regmap, BMC150_ACCEL_REG_CHIP_ID, &val);
if (ret < 0) {
dev_err(&data->client->dev,
"Error: Reading chip id\n");
return ret;
}
- dev_dbg(&data->client->dev, "Chip Id %x\n", ret);
- if (ret != data->chip_info->chip_id) {
- dev_err(&data->client->dev, "Invalid chip %x\n", ret);
+ dev_dbg(&data->client->dev, "Chip Id %x\n", val);
+ if (val != data->chip_info->chip_id) {
+ dev_err(&data->client->dev, "Invalid chip %x\n", val);
return -ENODEV;
}
@@ -372,9 +372,8 @@ static int bmc150_accel_chip_init(struct bmc150_accel_data *data)
return ret;
/* Set Default Range */
- ret = i2c_smbus_write_byte_data(data->client,
- BMC150_ACCEL_REG_PMU_RANGE,
- BMC150_ACCEL_DEF_RANGE_4G);
+ ret = regmap_write(data->regmap, BMC150_ACCEL_REG_PMU_RANGE,
+ BMC150_ACCEL_DEF_RANGE_4G);
if (ret < 0) {
dev_err(&data->client->dev,
"Error writing reg_pmu_range\n");
@@ -391,10 +390,9 @@ static int bmc150_accel_chip_init(struct bmc150_accel_data *data)
return ret;
/* Set default as latched interrupts */
- ret = i2c_smbus_write_byte_data(data->client,
- BMC150_ACCEL_REG_INT_RST_LATCH,
- BMC150_ACCEL_INT_MODE_LATCH_INT |
- BMC150_ACCEL_INT_MODE_LATCH_RESET);
+ ret = regmap_write(data->regmap, BMC150_ACCEL_REG_INT_RST_LATCH,
+ BMC150_ACCEL_INT_MODE_LATCH_INT |
+ BMC150_ACCEL_INT_MODE_LATCH_RESET);
if (ret < 0) {
dev_err(&data->client->dev,
"Error writing reg_int_rst_latch\n");
@@ -527,38 +525,18 @@ static int bmc150_accel_set_interrupt(struct bmc150_accel_data *data, int i,
return ret;
/* map the interrupt to the appropriate pins */
- ret = i2c_smbus_read_byte_data(data->client, info->map_reg);
+ ret = regmap_update_bits(data->regmap, info->map_reg, info->map_bitmask,
+ (state ? info->map_bitmask : 0));
if (ret < 0) {
- dev_err(&data->client->dev, "Error reading reg_int_map\n");
- goto out_fix_power_state;
- }
- if (state)
- ret |= info->map_bitmask;
- else
- ret &= ~info->map_bitmask;
-
- ret = i2c_smbus_write_byte_data(data->client, info->map_reg,
- ret);
- if (ret < 0) {
- dev_err(&data->client->dev, "Error writing reg_int_map\n");
+ dev_err(&data->client->dev, "Error updating reg_int_map\n");
goto out_fix_power_state;
}
/* enable/disable the interrupt */
- ret = i2c_smbus_read_byte_data(data->client, info->en_reg);
+ ret = regmap_update_bits(data->regmap, info->en_reg, info->en_bitmask,
+ (state ? info->en_bitmask : 0));
if (ret < 0) {
- dev_err(&data->client->dev, "Error reading reg_int_en\n");
- goto out_fix_power_state;
- }
-
- if (state)
- ret |= info->en_bitmask;
- else
- ret &= ~info->en_bitmask;
-
- ret = i2c_smbus_write_byte_data(data->client, info->en_reg, ret);
- if (ret < 0) {
- dev_err(&data->client->dev, "Error writing reg_int_en\n");
+ dev_err(&data->client->dev, "Error updating reg_int_en\n");
goto out_fix_power_state;
}
@@ -581,8 +559,7 @@ static int bmc150_accel_set_scale(struct bmc150_accel_data *data, int val)
for (i = 0; i < ARRAY_SIZE(data->chip_info->scale_table); ++i) {
if (data->chip_info->scale_table[i].scale == val) {
- ret = i2c_smbus_write_byte_data(
- data->client,
+ ret = regmap_write(data->regmap,
BMC150_ACCEL_REG_PMU_RANGE,
data->chip_info->scale_table[i].reg_range);
if (ret < 0) {
@@ -602,16 +579,17 @@ static int bmc150_accel_set_scale(struct bmc150_accel_data *data, int val)
static int bmc150_accel_get_temp(struct bmc150_accel_data *data, int *val)
{
int ret;
+ unsigned int value;
mutex_lock(&data->mutex);
- ret = i2c_smbus_read_byte_data(data->client, BMC150_ACCEL_REG_TEMP);
+ ret = regmap_read(data->regmap, BMC150_ACCEL_REG_TEMP, &value);
if (ret < 0) {
dev_err(&data->client->dev, "Error reading reg_temp\n");
mutex_unlock(&data->mutex);
return ret;
}
- *val = sign_extend32(ret, 7);
+ *val = sign_extend32(value, 7);
mutex_unlock(&data->mutex);
@@ -624,6 +602,7 @@ static int bmc150_accel_get_axis(struct bmc150_accel_data *data,
{
int ret;
int axis = chan->scan_index;
+ unsigned int raw_val;
mutex_lock(&data->mutex);
ret = bmc150_accel_set_power_state(data, true);
@@ -632,15 +611,15 @@ static int bmc150_accel_get_axis(struct bmc150_accel_data *data,
return ret;
}
- ret = i2c_smbus_read_word_data(data->client,
- BMC150_ACCEL_AXIS_TO_REG(axis));
+ ret = regmap_bulk_read(data->regmap, BMC150_ACCEL_AXIS_TO_REG(axis),
+ &raw_val, 2);
if (ret < 0) {
dev_err(&data->client->dev, "Error reading axis %d\n", axis);
bmc150_accel_set_power_state(data, false);
mutex_unlock(&data->mutex);
return ret;
}
- *val = sign_extend32(ret >> chan->scan_type.shift,
+ *val = sign_extend32(raw_val >> chan->scan_type.shift,
chan->scan_type.realbits - 1);
ret = bmc150_accel_set_power_state(data, false);
mutex_unlock(&data->mutex);
@@ -904,52 +883,34 @@ static int bmc150_accel_set_watermark(struct iio_dev *indio_dev, unsigned val)
* We must read at least one full frame in one burst, otherwise the rest of the
* frame data is discarded.
*/
-static int bmc150_accel_fifo_transfer(const struct i2c_client *client,
+static int bmc150_accel_fifo_transfer(struct bmc150_accel_data *data,
char *buffer, int samples)
{
int sample_length = 3 * 2;
- u8 reg_fifo_data = BMC150_ACCEL_REG_FIFO_DATA;
- int ret = -EIO;
-
- if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
- struct i2c_msg msg[2] = {
- {
- .addr = client->addr,
- .flags = 0,
- .buf = ®_fifo_data,
- .len = sizeof(reg_fifo_data),
- },
- {
- .addr = client->addr,
- .flags = I2C_M_RD,
- .buf = (u8 *)buffer,
- .len = samples * sample_length,
- }
- };
+ int ret;
+ int total_length = samples * sample_length;
+ int i;
+ int step = regmap_get_raw_read_max(data->regmap);
- ret = i2c_transfer(client->adapter, msg, 2);
- if (ret != 2)
- ret = -EIO;
- else
- ret = 0;
- } else {
- int i, step = I2C_SMBUS_BLOCK_MAX / sample_length;
-
- for (i = 0; i < samples * sample_length; i += step) {
- ret = i2c_smbus_read_i2c_block_data(client,
- reg_fifo_data, step,
- &buffer[i]);
- if (ret != step) {
- ret = -EIO;
- break;
- }
+ if (!step || step > total_length)
+ step = total_length;
+ else if (step < total_length)
+ step = sample_length;
- ret = 0;
- }
+ /*
+ * Seems we have a bus with size limitation so we have to execute
+ * multiple reads
+ */
+ for (i = 0; i < total_length; i += step) {
+ ret = regmap_raw_read(data->regmap, BMC150_ACCEL_REG_FIFO_DATA,
+ &buffer[i], step);
+ if (ret)
+ break;
}
if (ret)
- dev_err(&client->dev, "Error transferring data from fifo\n");
+ dev_err(data->dev, "Error transferring data from fifo in single steps of %zu\n",
+ step);
return ret;
}
@@ -963,14 +924,15 @@ static int __bmc150_accel_fifo_flush(struct iio_dev *indio_dev,
u16 buffer[BMC150_ACCEL_FIFO_LENGTH * 3];
int64_t tstamp;
uint64_t sample_period;
- ret = i2c_smbus_read_byte_data(data->client,
- BMC150_ACCEL_REG_FIFO_STATUS);
+ unsigned int val;
+
+ ret = regmap_read(data->regmap, BMC150_ACCEL_REG_FIFO_STATUS, &val);
if (ret < 0) {
dev_err(&data->client->dev, "Error reading reg_fifo_status\n");
return ret;
}
- count = ret & 0x7F;
+ count = val & 0x7F;
if (!count)
return 0;
@@ -1009,7 +971,7 @@ static int __bmc150_accel_fifo_flush(struct iio_dev *indio_dev,
if (samples && count > samples)
count = samples;
- ret = bmc150_accel_fifo_transfer(data->client, (u8 *)buffer, count);
+ ret = bmc150_accel_fifo_transfer(data, (u8 *)buffer, count);
if (ret)
return ret;
@@ -1206,17 +1168,19 @@ static irqreturn_t bmc150_accel_trigger_handler(int irq, void *p)
struct iio_dev *indio_dev = pf->indio_dev;
struct bmc150_accel_data *data = iio_priv(indio_dev);
int bit, ret, i = 0;
+ unsigned int raw_val;
mutex_lock(&data->mutex);
for_each_set_bit(bit, indio_dev->active_scan_mask,
indio_dev->masklength) {
- ret = i2c_smbus_read_word_data(data->client,
- BMC150_ACCEL_AXIS_TO_REG(bit));
+ ret = regmap_bulk_read(data->regmap,
+ BMC150_ACCEL_AXIS_TO_REG(bit), &raw_val,
+ 2);
if (ret < 0) {
mutex_unlock(&data->mutex);
goto err_read;
}
- data->buffer[i++] = ret;
+ data->buffer[i++] = raw_val;
}
mutex_unlock(&data->mutex);
@@ -1240,10 +1204,9 @@ static int bmc150_accel_trig_try_reen(struct iio_trigger *trig)
mutex_lock(&data->mutex);
/* clear any latched interrupt */
- ret = i2c_smbus_write_byte_data(data->client,
- BMC150_ACCEL_REG_INT_RST_LATCH,
- BMC150_ACCEL_INT_MODE_LATCH_INT |
- BMC150_ACCEL_INT_MODE_LATCH_RESET);
+ ret = regmap_write(data->regmap, BMC150_ACCEL_REG_INT_RST_LATCH,
+ BMC150_ACCEL_INT_MODE_LATCH_INT |
+ BMC150_ACCEL_INT_MODE_LATCH_RESET);
mutex_unlock(&data->mutex);
if (ret < 0) {
dev_err(&data->client->dev,
@@ -1300,34 +1263,34 @@ static int bmc150_accel_handle_roc_event(struct iio_dev *indio_dev)
struct bmc150_accel_data *data = iio_priv(indio_dev);
int dir;
int ret;
+ unsigned int val;
- ret = i2c_smbus_read_byte_data(data->client,
- BMC150_ACCEL_REG_INT_STATUS_2);
+ ret = regmap_read(data->regmap, BMC150_ACCEL_REG_INT_STATUS_2, &val);
if (ret < 0) {
dev_err(&data->client->dev, "Error reading reg_int_status_2\n");
return ret;
}
- if (ret & BMC150_ACCEL_ANY_MOTION_BIT_SIGN)
+ if (val & BMC150_ACCEL_ANY_MOTION_BIT_SIGN)
dir = IIO_EV_DIR_FALLING;
else
dir = IIO_EV_DIR_RISING;
- if (ret & BMC150_ACCEL_ANY_MOTION_BIT_X)
+ if (val & BMC150_ACCEL_ANY_MOTION_BIT_X)
iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ACCEL,
0,
IIO_MOD_X,
IIO_EV_TYPE_ROC,
dir),
data->timestamp);
- if (ret & BMC150_ACCEL_ANY_MOTION_BIT_Y)
+ if (val & BMC150_ACCEL_ANY_MOTION_BIT_Y)
iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ACCEL,
0,
IIO_MOD_Y,
IIO_EV_TYPE_ROC,
dir),
data->timestamp);
- if (ret & BMC150_ACCEL_ANY_MOTION_BIT_Z)
+ if (val & BMC150_ACCEL_ANY_MOTION_BIT_Z)
iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ACCEL,
0,
IIO_MOD_Z,
@@ -1360,10 +1323,9 @@ static irqreturn_t bmc150_accel_irq_thread_handler(int irq, void *private)
}
if (ack) {
- ret = i2c_smbus_write_byte_data(data->client,
- BMC150_ACCEL_REG_INT_RST_LATCH,
- BMC150_ACCEL_INT_MODE_LATCH_INT |
- BMC150_ACCEL_INT_MODE_LATCH_RESET);
+ ret = regmap_write(data->regmap, BMC150_ACCEL_REG_INT_RST_LATCH,
+ BMC150_ACCEL_INT_MODE_LATCH_INT |
+ BMC150_ACCEL_INT_MODE_LATCH_RESET);
if (ret)
dev_err(&data->client->dev, "Error writing reg_int_rst_latch\n");
ret = IRQ_HANDLED;
@@ -1516,7 +1478,7 @@ static int bmc150_accel_fifo_set_mode(struct bmc150_accel_data *data)
u8 reg = BMC150_ACCEL_REG_FIFO_CONFIG1;
int ret;
- ret = i2c_smbus_write_byte_data(data->client, reg, data->fifo_mode);
+ ret = regmap_write(data->regmap, reg, data->fifo_mode);
if (ret < 0) {
dev_err(&data->client->dev, "Error writing reg_fifo_config1\n");
return ret;
@@ -1525,9 +1487,8 @@ static int bmc150_accel_fifo_set_mode(struct bmc150_accel_data *data)
if (!data->fifo_mode)
return 0;
- ret = i2c_smbus_write_byte_data(data->client,
- BMC150_ACCEL_REG_FIFO_CONFIG0,
- data->watermark);
+ ret = regmap_write(data->regmap, BMC150_ACCEL_REG_FIFO_CONFIG0,
+ data->watermark);
if (ret < 0)
dev_err(&data->client->dev, "Error writing reg_fifo_config0\n");
@@ -1627,6 +1588,13 @@ static int bmc150_accel_probe(struct i2c_client *client,
data = iio_priv(indio_dev);
i2c_set_clientdata(client, indio_dev);
data->client = client;
+ data->dev = &client->dev;
+
+ data->regmap = devm_regmap_init_i2c(client, &bmc150_i2c_regmap_conf);
+ if (IS_ERR(data->regmap)) {
+ dev_err(&client->dev, "Failed to initialize i2c regmap\n");
+ return PTR_ERR(data->regmap);
+ }
if (id) {
name = id->name;
@@ -1680,9 +1648,8 @@ static int bmc150_accel_probe(struct i2c_client *client,
* want to use latch mode when we can to prevent interrupt
* flooding.
*/
- ret = i2c_smbus_write_byte_data(data->client,
- BMC150_ACCEL_REG_INT_RST_LATCH,
- BMC150_ACCEL_INT_MODE_LATCH_RESET);
+ ret = regmap_write(data->regmap, BMC150_ACCEL_REG_INT_RST_LATCH,
+ BMC150_ACCEL_INT_MODE_LATCH_RESET);
if (ret < 0) {
dev_err(&data->client->dev, "Error writing reg_int_rst_latch\n");
goto err_buffer_cleanup;
--
2.4.6
--
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| From | Jonathan Cameron <jic23@kernel.org> |
|---|---|
| Date | 2015-08-31 18:20 +0200 |
| Subject | Re: [PATCH v2 1/4] iio: bmc150: Use i2c regmap |
| Message-ID | <q3zYm-4sz-21@gated-at.bofh.it> |
| In reply to | #1210488 |
On 20/08/15 13:49, Markus Pargmann wrote:
> This replaces all usage of direct i2c accesses with regmap accesses.
>
> Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Looks fine to me, but I will be wanting an Ack / reviewed-by
and preferably a tested by from Srinivas.
Thanks,
Jonathan
> ---
> drivers/iio/accel/Kconfig | 2 +
> drivers/iio/accel/bmc150-accel.c | 219 +++++++++++++++++----------------------
> 2 files changed, 95 insertions(+), 126 deletions(-)
>
> diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig
> index 00e7bcbdbe24..01dd03d194d1 100644
> --- a/drivers/iio/accel/Kconfig
> +++ b/drivers/iio/accel/Kconfig
> @@ -22,6 +22,8 @@ config BMC150_ACCEL
> depends on I2C
> select IIO_BUFFER
> select IIO_TRIGGERED_BUFFER
> + select REGMAP
> + select REGMAP_I2C
> help
> Say yes here to build support for the following Bosch accelerometers:
> BMC150, BMI055, BMA250E, BMA222E, BMA255, BMA280.
> diff --git a/drivers/iio/accel/bmc150-accel.c b/drivers/iio/accel/bmc150-accel.c
> index 55751d9e1ade..c5c773e75173 100644
> --- a/drivers/iio/accel/bmc150-accel.c
> +++ b/drivers/iio/accel/bmc150-accel.c
> @@ -35,6 +35,7 @@
> #include <linux/iio/trigger.h>
> #include <linux/iio/trigger_consumer.h>
> #include <linux/iio/triggered_buffer.h>
> +#include <linux/regmap.h>
>
> #define BMC150_ACCEL_DRV_NAME "bmc150_accel"
> #define BMC150_ACCEL_IRQ_NAME "bmc150_accel_event"
> @@ -185,6 +186,8 @@ enum bmc150_accel_trigger_id {
>
> struct bmc150_accel_data {
> struct i2c_client *client;
> + struct regmap *regmap;
> + struct device *dev;
> struct bmc150_accel_interrupt interrupts[BMC150_ACCEL_INTERRUPTS];
> atomic_t active_intr;
> struct bmc150_accel_trigger triggers[BMC150_ACCEL_TRIGGERS];
> @@ -241,6 +244,11 @@ static const struct {
> {500000, BMC150_ACCEL_SLEEP_500_MS},
> {1000000, BMC150_ACCEL_SLEEP_1_SEC} };
>
> +static const struct regmap_config bmc150_i2c_regmap_conf = {
> + .reg_bits = 8,
> + .val_bits = 8,
> + .max_register = 0x3f,
> +};
>
> static int bmc150_accel_set_mode(struct bmc150_accel_data *data,
> enum bmc150_power_modes mode,
> @@ -270,8 +278,7 @@ static int bmc150_accel_set_mode(struct bmc150_accel_data *data,
>
> dev_dbg(&data->client->dev, "Set Mode bits %x\n", lpw_bits);
>
> - ret = i2c_smbus_write_byte_data(data->client,
> - BMC150_ACCEL_REG_PMU_LPW, lpw_bits);
> + ret = regmap_write(data->regmap, BMC150_ACCEL_REG_PMU_LPW, lpw_bits);
> if (ret < 0) {
> dev_err(&data->client->dev, "Error writing reg_pmu_lpw\n");
> return ret;
> @@ -289,8 +296,7 @@ static int bmc150_accel_set_bw(struct bmc150_accel_data *data, int val,
> for (i = 0; i < ARRAY_SIZE(bmc150_accel_samp_freq_table); ++i) {
> if (bmc150_accel_samp_freq_table[i].val == val &&
> bmc150_accel_samp_freq_table[i].val2 == val2) {
> - ret = i2c_smbus_write_byte_data(
> - data->client,
> + ret = regmap_write(data->regmap,
> BMC150_ACCEL_REG_PMU_BW,
> bmc150_accel_samp_freq_table[i].bw_bits);
> if (ret < 0)
> @@ -307,26 +313,19 @@ static int bmc150_accel_set_bw(struct bmc150_accel_data *data, int val,
>
> static int bmc150_accel_update_slope(struct bmc150_accel_data *data)
> {
> - int ret, val;
> + int ret;
>
> - ret = i2c_smbus_write_byte_data(data->client, BMC150_ACCEL_REG_INT_6,
> + ret = regmap_write(data->regmap, BMC150_ACCEL_REG_INT_6,
> data->slope_thres);
> if (ret < 0) {
> dev_err(&data->client->dev, "Error writing reg_int_6\n");
> return ret;
> }
>
> - ret = i2c_smbus_read_byte_data(data->client, BMC150_ACCEL_REG_INT_5);
> + ret = regmap_update_bits(data->regmap, BMC150_ACCEL_REG_INT_5,
> + BMC150_ACCEL_SLOPE_DUR_MASK, data->slope_dur);
> if (ret < 0) {
> - dev_err(&data->client->dev, "Error reading reg_int_5\n");
> - return ret;
> - }
> -
> - val = (ret & ~BMC150_ACCEL_SLOPE_DUR_MASK) | data->slope_dur;
> - ret = i2c_smbus_write_byte_data(data->client, BMC150_ACCEL_REG_INT_5,
> - val);
> - if (ret < 0) {
> - dev_err(&data->client->dev, "Error write reg_int_5\n");
> + dev_err(&data->client->dev, "Error updating reg_int_5\n");
> return ret;
> }
>
> @@ -348,17 +347,18 @@ static int bmc150_accel_any_motion_setup(struct bmc150_accel_trigger *t,
> static int bmc150_accel_chip_init(struct bmc150_accel_data *data)
> {
> int ret;
> + unsigned int val;
>
> - ret = i2c_smbus_read_byte_data(data->client, BMC150_ACCEL_REG_CHIP_ID);
> + ret = regmap_read(data->regmap, BMC150_ACCEL_REG_CHIP_ID, &val);
> if (ret < 0) {
> dev_err(&data->client->dev,
> "Error: Reading chip id\n");
> return ret;
> }
>
> - dev_dbg(&data->client->dev, "Chip Id %x\n", ret);
> - if (ret != data->chip_info->chip_id) {
> - dev_err(&data->client->dev, "Invalid chip %x\n", ret);
> + dev_dbg(&data->client->dev, "Chip Id %x\n", val);
> + if (val != data->chip_info->chip_id) {
> + dev_err(&data->client->dev, "Invalid chip %x\n", val);
> return -ENODEV;
> }
>
> @@ -372,9 +372,8 @@ static int bmc150_accel_chip_init(struct bmc150_accel_data *data)
> return ret;
>
> /* Set Default Range */
> - ret = i2c_smbus_write_byte_data(data->client,
> - BMC150_ACCEL_REG_PMU_RANGE,
> - BMC150_ACCEL_DEF_RANGE_4G);
> + ret = regmap_write(data->regmap, BMC150_ACCEL_REG_PMU_RANGE,
> + BMC150_ACCEL_DEF_RANGE_4G);
> if (ret < 0) {
> dev_err(&data->client->dev,
> "Error writing reg_pmu_range\n");
> @@ -391,10 +390,9 @@ static int bmc150_accel_chip_init(struct bmc150_accel_data *data)
> return ret;
>
> /* Set default as latched interrupts */
> - ret = i2c_smbus_write_byte_data(data->client,
> - BMC150_ACCEL_REG_INT_RST_LATCH,
> - BMC150_ACCEL_INT_MODE_LATCH_INT |
> - BMC150_ACCEL_INT_MODE_LATCH_RESET);
> + ret = regmap_write(data->regmap, BMC150_ACCEL_REG_INT_RST_LATCH,
> + BMC150_ACCEL_INT_MODE_LATCH_INT |
> + BMC150_ACCEL_INT_MODE_LATCH_RESET);
> if (ret < 0) {
> dev_err(&data->client->dev,
> "Error writing reg_int_rst_latch\n");
> @@ -527,38 +525,18 @@ static int bmc150_accel_set_interrupt(struct bmc150_accel_data *data, int i,
> return ret;
>
> /* map the interrupt to the appropriate pins */
> - ret = i2c_smbus_read_byte_data(data->client, info->map_reg);
> + ret = regmap_update_bits(data->regmap, info->map_reg, info->map_bitmask,
> + (state ? info->map_bitmask : 0));
> if (ret < 0) {
> - dev_err(&data->client->dev, "Error reading reg_int_map\n");
> - goto out_fix_power_state;
> - }
> - if (state)
> - ret |= info->map_bitmask;
> - else
> - ret &= ~info->map_bitmask;
> -
> - ret = i2c_smbus_write_byte_data(data->client, info->map_reg,
> - ret);
> - if (ret < 0) {
> - dev_err(&data->client->dev, "Error writing reg_int_map\n");
> + dev_err(&data->client->dev, "Error updating reg_int_map\n");
> goto out_fix_power_state;
> }
>
> /* enable/disable the interrupt */
> - ret = i2c_smbus_read_byte_data(data->client, info->en_reg);
> + ret = regmap_update_bits(data->regmap, info->en_reg, info->en_bitmask,
> + (state ? info->en_bitmask : 0));
> if (ret < 0) {
> - dev_err(&data->client->dev, "Error reading reg_int_en\n");
> - goto out_fix_power_state;
> - }
> -
> - if (state)
> - ret |= info->en_bitmask;
> - else
> - ret &= ~info->en_bitmask;
> -
> - ret = i2c_smbus_write_byte_data(data->client, info->en_reg, ret);
> - if (ret < 0) {
> - dev_err(&data->client->dev, "Error writing reg_int_en\n");
> + dev_err(&data->client->dev, "Error updating reg_int_en\n");
> goto out_fix_power_state;
> }
>
> @@ -581,8 +559,7 @@ static int bmc150_accel_set_scale(struct bmc150_accel_data *data, int val)
>
> for (i = 0; i < ARRAY_SIZE(data->chip_info->scale_table); ++i) {
> if (data->chip_info->scale_table[i].scale == val) {
> - ret = i2c_smbus_write_byte_data(
> - data->client,
> + ret = regmap_write(data->regmap,
> BMC150_ACCEL_REG_PMU_RANGE,
> data->chip_info->scale_table[i].reg_range);
> if (ret < 0) {
> @@ -602,16 +579,17 @@ static int bmc150_accel_set_scale(struct bmc150_accel_data *data, int val)
> static int bmc150_accel_get_temp(struct bmc150_accel_data *data, int *val)
> {
> int ret;
> + unsigned int value;
>
> mutex_lock(&data->mutex);
>
> - ret = i2c_smbus_read_byte_data(data->client, BMC150_ACCEL_REG_TEMP);
> + ret = regmap_read(data->regmap, BMC150_ACCEL_REG_TEMP, &value);
> if (ret < 0) {
> dev_err(&data->client->dev, "Error reading reg_temp\n");
> mutex_unlock(&data->mutex);
> return ret;
> }
> - *val = sign_extend32(ret, 7);
> + *val = sign_extend32(value, 7);
>
> mutex_unlock(&data->mutex);
>
> @@ -624,6 +602,7 @@ static int bmc150_accel_get_axis(struct bmc150_accel_data *data,
> {
> int ret;
> int axis = chan->scan_index;
> + unsigned int raw_val;
>
> mutex_lock(&data->mutex);
> ret = bmc150_accel_set_power_state(data, true);
> @@ -632,15 +611,15 @@ static int bmc150_accel_get_axis(struct bmc150_accel_data *data,
> return ret;
> }
>
> - ret = i2c_smbus_read_word_data(data->client,
> - BMC150_ACCEL_AXIS_TO_REG(axis));
> + ret = regmap_bulk_read(data->regmap, BMC150_ACCEL_AXIS_TO_REG(axis),
> + &raw_val, 2);
> if (ret < 0) {
> dev_err(&data->client->dev, "Error reading axis %d\n", axis);
> bmc150_accel_set_power_state(data, false);
> mutex_unlock(&data->mutex);
> return ret;
> }
> - *val = sign_extend32(ret >> chan->scan_type.shift,
> + *val = sign_extend32(raw_val >> chan->scan_type.shift,
> chan->scan_type.realbits - 1);
> ret = bmc150_accel_set_power_state(data, false);
> mutex_unlock(&data->mutex);
> @@ -904,52 +883,34 @@ static int bmc150_accel_set_watermark(struct iio_dev *indio_dev, unsigned val)
> * We must read at least one full frame in one burst, otherwise the rest of the
> * frame data is discarded.
> */
> -static int bmc150_accel_fifo_transfer(const struct i2c_client *client,
> +static int bmc150_accel_fifo_transfer(struct bmc150_accel_data *data,
> char *buffer, int samples)
> {
> int sample_length = 3 * 2;
> - u8 reg_fifo_data = BMC150_ACCEL_REG_FIFO_DATA;
> - int ret = -EIO;
> -
> - if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
> - struct i2c_msg msg[2] = {
> - {
> - .addr = client->addr,
> - .flags = 0,
> - .buf = ®_fifo_data,
> - .len = sizeof(reg_fifo_data),
> - },
> - {
> - .addr = client->addr,
> - .flags = I2C_M_RD,
> - .buf = (u8 *)buffer,
> - .len = samples * sample_length,
> - }
> - };
> + int ret;
> + int total_length = samples * sample_length;
> + int i;
> + int step = regmap_get_raw_read_max(data->regmap);
>
> - ret = i2c_transfer(client->adapter, msg, 2);
> - if (ret != 2)
> - ret = -EIO;
> - else
> - ret = 0;
> - } else {
> - int i, step = I2C_SMBUS_BLOCK_MAX / sample_length;
> -
> - for (i = 0; i < samples * sample_length; i += step) {
> - ret = i2c_smbus_read_i2c_block_data(client,
> - reg_fifo_data, step,
> - &buffer[i]);
> - if (ret != step) {
> - ret = -EIO;
> - break;
> - }
> + if (!step || step > total_length)
> + step = total_length;
> + else if (step < total_length)
> + step = sample_length;
>
> - ret = 0;
> - }
> + /*
> + * Seems we have a bus with size limitation so we have to execute
> + * multiple reads
> + */
> + for (i = 0; i < total_length; i += step) {
> + ret = regmap_raw_read(data->regmap, BMC150_ACCEL_REG_FIFO_DATA,
> + &buffer[i], step);
> + if (ret)
> + break;
> }
>
> if (ret)
> - dev_err(&client->dev, "Error transferring data from fifo\n");
> + dev_err(data->dev, "Error transferring data from fifo in single steps of %zu\n",
> + step);
>
> return ret;
> }
> @@ -963,14 +924,15 @@ static int __bmc150_accel_fifo_flush(struct iio_dev *indio_dev,
> u16 buffer[BMC150_ACCEL_FIFO_LENGTH * 3];
> int64_t tstamp;
> uint64_t sample_period;
> - ret = i2c_smbus_read_byte_data(data->client,
> - BMC150_ACCEL_REG_FIFO_STATUS);
> + unsigned int val;
> +
> + ret = regmap_read(data->regmap, BMC150_ACCEL_REG_FIFO_STATUS, &val);
> if (ret < 0) {
> dev_err(&data->client->dev, "Error reading reg_fifo_status\n");
> return ret;
> }
>
> - count = ret & 0x7F;
> + count = val & 0x7F;
>
> if (!count)
> return 0;
> @@ -1009,7 +971,7 @@ static int __bmc150_accel_fifo_flush(struct iio_dev *indio_dev,
> if (samples && count > samples)
> count = samples;
>
> - ret = bmc150_accel_fifo_transfer(data->client, (u8 *)buffer, count);
> + ret = bmc150_accel_fifo_transfer(data, (u8 *)buffer, count);
> if (ret)
> return ret;
>
> @@ -1206,17 +1168,19 @@ static irqreturn_t bmc150_accel_trigger_handler(int irq, void *p)
> struct iio_dev *indio_dev = pf->indio_dev;
> struct bmc150_accel_data *data = iio_priv(indio_dev);
> int bit, ret, i = 0;
> + unsigned int raw_val;
>
> mutex_lock(&data->mutex);
> for_each_set_bit(bit, indio_dev->active_scan_mask,
> indio_dev->masklength) {
> - ret = i2c_smbus_read_word_data(data->client,
> - BMC150_ACCEL_AXIS_TO_REG(bit));
> + ret = regmap_bulk_read(data->regmap,
> + BMC150_ACCEL_AXIS_TO_REG(bit), &raw_val,
> + 2);
> if (ret < 0) {
> mutex_unlock(&data->mutex);
> goto err_read;
> }
> - data->buffer[i++] = ret;
> + data->buffer[i++] = raw_val;
> }
> mutex_unlock(&data->mutex);
>
> @@ -1240,10 +1204,9 @@ static int bmc150_accel_trig_try_reen(struct iio_trigger *trig)
>
> mutex_lock(&data->mutex);
> /* clear any latched interrupt */
> - ret = i2c_smbus_write_byte_data(data->client,
> - BMC150_ACCEL_REG_INT_RST_LATCH,
> - BMC150_ACCEL_INT_MODE_LATCH_INT |
> - BMC150_ACCEL_INT_MODE_LATCH_RESET);
> + ret = regmap_write(data->regmap, BMC150_ACCEL_REG_INT_RST_LATCH,
> + BMC150_ACCEL_INT_MODE_LATCH_INT |
> + BMC150_ACCEL_INT_MODE_LATCH_RESET);
> mutex_unlock(&data->mutex);
> if (ret < 0) {
> dev_err(&data->client->dev,
> @@ -1300,34 +1263,34 @@ static int bmc150_accel_handle_roc_event(struct iio_dev *indio_dev)
> struct bmc150_accel_data *data = iio_priv(indio_dev);
> int dir;
> int ret;
> + unsigned int val;
>
> - ret = i2c_smbus_read_byte_data(data->client,
> - BMC150_ACCEL_REG_INT_STATUS_2);
> + ret = regmap_read(data->regmap, BMC150_ACCEL_REG_INT_STATUS_2, &val);
> if (ret < 0) {
> dev_err(&data->client->dev, "Error reading reg_int_status_2\n");
> return ret;
> }
>
> - if (ret & BMC150_ACCEL_ANY_MOTION_BIT_SIGN)
> + if (val & BMC150_ACCEL_ANY_MOTION_BIT_SIGN)
> dir = IIO_EV_DIR_FALLING;
> else
> dir = IIO_EV_DIR_RISING;
>
> - if (ret & BMC150_ACCEL_ANY_MOTION_BIT_X)
> + if (val & BMC150_ACCEL_ANY_MOTION_BIT_X)
> iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ACCEL,
> 0,
> IIO_MOD_X,
> IIO_EV_TYPE_ROC,
> dir),
> data->timestamp);
> - if (ret & BMC150_ACCEL_ANY_MOTION_BIT_Y)
> + if (val & BMC150_ACCEL_ANY_MOTION_BIT_Y)
> iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ACCEL,
> 0,
> IIO_MOD_Y,
> IIO_EV_TYPE_ROC,
> dir),
> data->timestamp);
> - if (ret & BMC150_ACCEL_ANY_MOTION_BIT_Z)
> + if (val & BMC150_ACCEL_ANY_MOTION_BIT_Z)
> iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ACCEL,
> 0,
> IIO_MOD_Z,
> @@ -1360,10 +1323,9 @@ static irqreturn_t bmc150_accel_irq_thread_handler(int irq, void *private)
> }
>
> if (ack) {
> - ret = i2c_smbus_write_byte_data(data->client,
> - BMC150_ACCEL_REG_INT_RST_LATCH,
> - BMC150_ACCEL_INT_MODE_LATCH_INT |
> - BMC150_ACCEL_INT_MODE_LATCH_RESET);
> + ret = regmap_write(data->regmap, BMC150_ACCEL_REG_INT_RST_LATCH,
> + BMC150_ACCEL_INT_MODE_LATCH_INT |
> + BMC150_ACCEL_INT_MODE_LATCH_RESET);
> if (ret)
> dev_err(&data->client->dev, "Error writing reg_int_rst_latch\n");
> ret = IRQ_HANDLED;
> @@ -1516,7 +1478,7 @@ static int bmc150_accel_fifo_set_mode(struct bmc150_accel_data *data)
> u8 reg = BMC150_ACCEL_REG_FIFO_CONFIG1;
> int ret;
>
> - ret = i2c_smbus_write_byte_data(data->client, reg, data->fifo_mode);
> + ret = regmap_write(data->regmap, reg, data->fifo_mode);
> if (ret < 0) {
> dev_err(&data->client->dev, "Error writing reg_fifo_config1\n");
> return ret;
> @@ -1525,9 +1487,8 @@ static int bmc150_accel_fifo_set_mode(struct bmc150_accel_data *data)
> if (!data->fifo_mode)
> return 0;
>
> - ret = i2c_smbus_write_byte_data(data->client,
> - BMC150_ACCEL_REG_FIFO_CONFIG0,
> - data->watermark);
> + ret = regmap_write(data->regmap, BMC150_ACCEL_REG_FIFO_CONFIG0,
> + data->watermark);
> if (ret < 0)
> dev_err(&data->client->dev, "Error writing reg_fifo_config0\n");
>
> @@ -1627,6 +1588,13 @@ static int bmc150_accel_probe(struct i2c_client *client,
> data = iio_priv(indio_dev);
> i2c_set_clientdata(client, indio_dev);
> data->client = client;
> + data->dev = &client->dev;
> +
> + data->regmap = devm_regmap_init_i2c(client, &bmc150_i2c_regmap_conf);
> + if (IS_ERR(data->regmap)) {
> + dev_err(&client->dev, "Failed to initialize i2c regmap\n");
> + return PTR_ERR(data->regmap);
> + }
>
> if (id) {
> name = id->name;
> @@ -1680,9 +1648,8 @@ static int bmc150_accel_probe(struct i2c_client *client,
> * want to use latch mode when we can to prevent interrupt
> * flooding.
> */
> - ret = i2c_smbus_write_byte_data(data->client,
> - BMC150_ACCEL_REG_INT_RST_LATCH,
> - BMC150_ACCEL_INT_MODE_LATCH_RESET);
> + ret = regmap_write(data->regmap, BMC150_ACCEL_REG_INT_RST_LATCH,
> + BMC150_ACCEL_INT_MODE_LATCH_RESET);
> if (ret < 0) {
> dev_err(&data->client->dev, "Error writing reg_int_rst_latch\n");
> goto err_buffer_cleanup;
>
--
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| From | Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> |
|---|---|
| Date | 2015-08-31 21:40 +0200 |
| Subject | Re: [PATCH v2 1/4] iio: bmc150: Use i2c regmap |
| Message-ID | <q3D5V-pQ-29@gated-at.bofh.it> |
| In reply to | #1216298 |
Hi Irina,
Is it possible for you to test this patchset? I don't have platform to
test with me now (working remotely for couple of weeks).
Thanks,
Srinivas
On Mon, 2015-08-31 at 17:11 +0100, Jonathan Cameron wrote:
> On 20/08/15 13:49, Markus Pargmann wrote:
> > This replaces all usage of direct i2c accesses with regmap
> > accesses.
> >
> > Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
> Looks fine to me, but I will be wanting an Ack / reviewed-by
> and preferably a tested by from Srinivas.
>
> Thanks,
>
> Jonathan
> > ---
> > drivers/iio/accel/Kconfig | 2 +
> > drivers/iio/accel/bmc150-accel.c | 219 +++++++++++++++++----------
> > ------------
> > 2 files changed, 95 insertions(+), 126 deletions(-)
> >
> > diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig
> > index 00e7bcbdbe24..01dd03d194d1 100644
> > --- a/drivers/iio/accel/Kconfig
> > +++ b/drivers/iio/accel/Kconfig
> > @@ -22,6 +22,8 @@ config BMC150_ACCEL
> > depends on I2C
> > select IIO_BUFFER
> > select IIO_TRIGGERED_BUFFER
> > + select REGMAP
> > + select REGMAP_I2C
> > help
> > Say yes here to build support for the following Bosch
> > accelerometers:
> > BMC150, BMI055, BMA250E, BMA222E, BMA255, BMA280.
> > diff --git a/drivers/iio/accel/bmc150-accel.c
> > b/drivers/iio/accel/bmc150-accel.c
> > index 55751d9e1ade..c5c773e75173 100644
> > --- a/drivers/iio/accel/bmc150-accel.c
> > +++ b/drivers/iio/accel/bmc150-accel.c
> > @@ -35,6 +35,7 @@
> > #include <linux/iio/trigger.h>
> > #include <linux/iio/trigger_consumer.h>
> > #include <linux/iio/triggered_buffer.h>
> > +#include <linux/regmap.h>
> >
> > #define BMC150_ACCEL_DRV_NAME "bmc150_accel
> > "
> > #define BMC150_ACCEL_IRQ_NAME "bmc150_accel
> > _event"
> > @@ -185,6 +186,8 @@ enum bmc150_accel_trigger_id {
> >
> > struct bmc150_accel_data {
> > struct i2c_client *client;
> > + struct regmap *regmap;
> > + struct device *dev;
> > struct bmc150_accel_interrupt
> > interrupts[BMC150_ACCEL_INTERRUPTS];
> > atomic_t active_intr;
> > struct bmc150_accel_trigger
> > triggers[BMC150_ACCEL_TRIGGERS];
> > @@ -241,6 +244,11 @@ static const struct {
> > {500000,
> > BMC150_ACCEL_SLEEP_500_MS},
> > {1000000,
> > BMC150_ACCEL_SLEEP_1_SEC} };
> >
> > +static const struct regmap_config bmc150_i2c_regmap_conf = {
> > + .reg_bits = 8,
> > + .val_bits = 8,
> > + .max_register = 0x3f,
> > +};
> >
> > static int bmc150_accel_set_mode(struct bmc150_accel_data *data,
> > enum bmc150_power_modes mode,
> > @@ -270,8 +278,7 @@ static int bmc150_accel_set_mode(struct
> > bmc150_accel_data *data,
> >
> > dev_dbg(&data->client->dev, "Set Mode bits %x\n",
> > lpw_bits);
> >
> > - ret = i2c_smbus_write_byte_data(data->client,
> > - BMC150_ACCEL_REG_PMU_LPW,
> > lpw_bits);
> > + ret = regmap_write(data->regmap, BMC150_ACCEL_REG_PMU_LPW,
> > lpw_bits);
> > if (ret < 0) {
> > dev_err(&data->client->dev, "Error writing
> > reg_pmu_lpw\n");
> > return ret;
> > @@ -289,8 +296,7 @@ static int bmc150_accel_set_bw(struct
> > bmc150_accel_data *data, int val,
> > for (i = 0; i < ARRAY_SIZE(bmc150_accel_samp_freq_table);
> > ++i) {
> > if (bmc150_accel_samp_freq_table[i].val == val &&
> > bmc150_accel_samp_freq_table[i].va
> > l2 == val2) {
> > - ret = i2c_smbus_write_byte_data(
> > - data->client,
> > + ret = regmap_write(data->regmap,
> > BMC150_ACCEL_REG_PMU_BW,
> > bmc150_accel_samp_freq_table[i].bw
> > _bits);
> > if (ret < 0)
> > @@ -307,26 +313,19 @@ static int bmc150_accel_set_bw(struct
> > bmc150_accel_data *data, int val,
> >
> > static int bmc150_accel_update_slope(struct bmc150_accel_data
> > *data)
> > {
> > - int ret, val;
> > + int ret;
> >
> > - ret = i2c_smbus_write_byte_data(data->client,
> > BMC150_ACCEL_REG_INT_6,
> > + ret = regmap_write(data->regmap, BMC150_ACCEL_REG_INT_6,
> > data->slope_thres);
> > if (ret < 0) {
> > dev_err(&data->client->dev, "Error writing
> > reg_int_6\n");
> > return ret;
> > }
> >
> > - ret = i2c_smbus_read_byte_data(data->client,
> > BMC150_ACCEL_REG_INT_5);
> > + ret = regmap_update_bits(data->regmap,
> > BMC150_ACCEL_REG_INT_5,
> > + BMC150_ACCEL_SLOPE_DUR_MASK, data
> > ->slope_dur);
> > if (ret < 0) {
> > - dev_err(&data->client->dev, "Error reading
> > reg_int_5\n");
> > - return ret;
> > - }
> > -
> > - val = (ret & ~BMC150_ACCEL_SLOPE_DUR_MASK) | data
> > ->slope_dur;
> > - ret = i2c_smbus_write_byte_data(data->client,
> > BMC150_ACCEL_REG_INT_5,
> > - val);
> > - if (ret < 0) {
> > - dev_err(&data->client->dev, "Error write
> > reg_int_5\n");
> > + dev_err(&data->client->dev, "Error updating
> > reg_int_5\n");
> > return ret;
> > }
> >
> > @@ -348,17 +347,18 @@ static int
> > bmc150_accel_any_motion_setup(struct bmc150_accel_trigger *t,
> > static int bmc150_accel_chip_init(struct bmc150_accel_data *data)
> > {
> > int ret;
> > + unsigned int val;
> >
> > - ret = i2c_smbus_read_byte_data(data->client,
> > BMC150_ACCEL_REG_CHIP_ID);
> > + ret = regmap_read(data->regmap, BMC150_ACCEL_REG_CHIP_ID,
> > &val);
> > if (ret < 0) {
> > dev_err(&data->client->dev,
> > "Error: Reading chip id\n");
> > return ret;
> > }
> >
> > - dev_dbg(&data->client->dev, "Chip Id %x\n", ret);
> > - if (ret != data->chip_info->chip_id) {
> > - dev_err(&data->client->dev, "Invalid chip %x\n",
> > ret);
> > + dev_dbg(&data->client->dev, "Chip Id %x\n", val);
> > + if (val != data->chip_info->chip_id) {
> > + dev_err(&data->client->dev, "Invalid chip %x\n",
> > val);
> > return -ENODEV;
> > }
> >
> > @@ -372,9 +372,8 @@ static int bmc150_accel_chip_init(struct
> > bmc150_accel_data *data)
> > return ret;
> >
> > /* Set Default Range */
> > - ret = i2c_smbus_write_byte_data(data->client,
> > - BMC150_ACCEL_REG_PMU_RANGE
> > ,
> > - BMC150_ACCEL_DEF_RANGE_4G)
> > ;
> > + ret = regmap_write(data->regmap,
> > BMC150_ACCEL_REG_PMU_RANGE,
> > + BMC150_ACCEL_DEF_RANGE_4G);
> > if (ret < 0) {
> > dev_err(&data->client->dev,
> > "Error writing
> > reg_pmu_range\n");
> > @@ -391,10 +390,9 @@ static int bmc150_accel_chip_init(struct
> > bmc150_accel_data *data)
> > return ret;
> >
> > /* Set default as latched interrupts */
> > - ret = i2c_smbus_write_byte_data(data->client,
> > - BMC150_ACCEL_REG_INT_RST_L
> > ATCH,
> > - BMC150_ACCEL_INT_MODE_LATC
> > H_INT |
> > - BMC150_ACCEL_INT_MODE_LATC
> > H_RESET);
> > + ret = regmap_write(data->regmap,
> > BMC150_ACCEL_REG_INT_RST_LATCH,
> > + BMC150_ACCEL_INT_MODE_LATCH_INT |
> > + BMC150_ACCEL_INT_MODE_LATCH_RESET);
> > if (ret < 0) {
> > dev_err(&data->client->dev,
> > "Error writing reg_int_rst_latch\n");
> > @@ -527,38 +525,18 @@ static int bmc150_accel_set_interrupt(struct
> > bmc150_accel_data *data, int i,
> > return ret;
> >
> > /* map the interrupt to the appropriate pins */
> > - ret = i2c_smbus_read_byte_data(data->client, info
> > ->map_reg);
> > + ret = regmap_update_bits(data->regmap, info->map_reg, info
> > ->map_bitmask,
> > + (state ? info->map_bitmask : 0));
> > if (ret < 0) {
> > - dev_err(&data->client->dev, "Error reading
> > reg_int_map\n");
> > - goto out_fix_power_state;
> > - }
> > - if (state)
> > - ret |= info->map_bitmask;
> > - else
> > - ret &= ~info->map_bitmask;
> > -
> > - ret = i2c_smbus_write_byte_data(data->client, info
> > ->map_reg,
> > - ret);
> > - if (ret < 0) {
> > - dev_err(&data->client->dev, "Error writing
> > reg_int_map\n");
> > + dev_err(&data->client->dev, "Error updating
> > reg_int_map\n");
> > goto out_fix_power_state;
> > }
> >
> > /* enable/disable the interrupt */
> > - ret = i2c_smbus_read_byte_data(data->client, info
> > ->en_reg);
> > + ret = regmap_update_bits(data->regmap, info->en_reg, info
> > ->en_bitmask,
> > + (state ? info->en_bitmask : 0));
> > if (ret < 0) {
> > - dev_err(&data->client->dev, "Error reading
> > reg_int_en\n");
> > - goto out_fix_power_state;
> > - }
> > -
> > - if (state)
> > - ret |= info->en_bitmask;
> > - else
> > - ret &= ~info->en_bitmask;
> > -
> > - ret = i2c_smbus_write_byte_data(data->client, info
> > ->en_reg, ret);
> > - if (ret < 0) {
> > - dev_err(&data->client->dev, "Error writing
> > reg_int_en\n");
> > + dev_err(&data->client->dev, "Error updating
> > reg_int_en\n");
> > goto out_fix_power_state;
> > }
> >
> > @@ -581,8 +559,7 @@ static int bmc150_accel_set_scale(struct
> > bmc150_accel_data *data, int val)
> >
> > for (i = 0; i < ARRAY_SIZE(data->chip_info->scale_table);
> > ++i) {
> > if (data->chip_info->scale_table[i].scale == val)
> > {
> > - ret = i2c_smbus_write_byte_data(
> > - data->client,
> > + ret = regmap_write(data->regmap,
> > BMC150_ACCEL_REG_PMU_RANGE,
> > data->chip_info
> > ->scale_table[i].reg_range);
> > if (ret < 0) {
> > @@ -602,16 +579,17 @@ static int bmc150_accel_set_scale(struct
> > bmc150_accel_data *data, int val)
> > static int bmc150_accel_get_temp(struct bmc150_accel_data *data,
> > int *val)
> > {
> > int ret;
> > + unsigned int value;
> >
> > mutex_lock(&data->mutex);
> >
> > - ret = i2c_smbus_read_byte_data(data->client,
> > BMC150_ACCEL_REG_TEMP);
> > + ret = regmap_read(data->regmap, BMC150_ACCEL_REG_TEMP,
> > &value);
> > if (ret < 0) {
> > dev_err(&data->client->dev, "Error reading
> > reg_temp\n");
> > mutex_unlock(&data->mutex);
> > return ret;
> > }
> > - *val = sign_extend32(ret, 7);
> > + *val = sign_extend32(value, 7);
> >
> > mutex_unlock(&data->mutex);
> >
> > @@ -624,6 +602,7 @@ static int bmc150_accel_get_axis(struct
> > bmc150_accel_data *data,
> > {
> > int ret;
> > int axis = chan->scan_index;
> > + unsigned int raw_val;
> >
> > mutex_lock(&data->mutex);
> > ret = bmc150_accel_set_power_state(data, true);
> > @@ -632,15 +611,15 @@ static int bmc150_accel_get_axis(struct
> > bmc150_accel_data *data,
> > return ret;
> > }
> >
> > - ret = i2c_smbus_read_word_data(data->client,
> > -
> > BMC150_ACCEL_AXIS_TO_REG(axis));
> > + ret = regmap_bulk_read(data->regmap,
> > BMC150_ACCEL_AXIS_TO_REG(axis),
> > + &raw_val, 2);
> > if (ret < 0) {
> > dev_err(&data->client->dev, "Error reading axis
> > %d\n", axis);
> > bmc150_accel_set_power_state(data, false);
> > mutex_unlock(&data->mutex);
> > return ret;
> > }
> > - *val = sign_extend32(ret >> chan->scan_type.shift,
> > + *val = sign_extend32(raw_val >> chan->scan_type.shift,
> > chan->scan_type.realbits - 1);
> > ret = bmc150_accel_set_power_state(data, false);
> > mutex_unlock(&data->mutex);
> > @@ -904,52 +883,34 @@ static int bmc150_accel_set_watermark(struct
> > iio_dev *indio_dev, unsigned val)
> > * We must read at least one full frame in one burst, otherwise
> > the rest of the
> > * frame data is discarded.
> > */
> > -static int bmc150_accel_fifo_transfer(const struct i2c_client
> > *client,
> > +static int bmc150_accel_fifo_transfer(struct bmc150_accel_data
> > *data,
> > char *buffer, int samples)
> > {
> > int sample_length = 3 * 2;
> > - u8 reg_fifo_data = BMC150_ACCEL_REG_FIFO_DATA;
> > - int ret = -EIO;
> > -
> > - if (i2c_check_functionality(client->adapter,
> > I2C_FUNC_I2C)) {
> > - struct i2c_msg msg[2] = {
> > - {
> > - .addr = client->addr,
> > - .flags = 0,
> > - .buf = ®_fifo_data,
> > - .len = sizeof(reg_fifo_data),
> > - },
> > - {
> > - .addr = client->addr,
> > - .flags = I2C_M_RD,
> > - .buf = (u8 *)buffer,
> > - .len = samples * sample_length,
> > - }
> > - };
> > + int ret;
> > + int total_length = samples * sample_length;
> > + int i;
> > + int step = regmap_get_raw_read_max(data->regmap);
> >
> > - ret = i2c_transfer(client->adapter, msg, 2);
> > - if (ret != 2)
> > - ret = -EIO;
> > - else
> > - ret = 0;
> > - } else {
> > - int i, step = I2C_SMBUS_BLOCK_MAX / sample_length;
> > -
> > - for (i = 0; i < samples * sample_length; i +=
> > step) {
> > - ret =
> > i2c_smbus_read_i2c_block_data(client,
> > -
> > reg_fifo_data, step,
> > -
> > &buffer[i]);
> > - if (ret != step) {
> > - ret = -EIO;
> > - break;
> > - }
> > + if (!step || step > total_length)
> > + step = total_length;
> > + else if (step < total_length)
> > + step = sample_length;
> >
> > - ret = 0;
> > - }
> > + /*
> > + * Seems we have a bus with size limitation so we have to
> > execute
> > + * multiple reads
> > + */
> > + for (i = 0; i < total_length; i += step) {
> > + ret = regmap_raw_read(data->regmap,
> > BMC150_ACCEL_REG_FIFO_DATA,
> > + &buffer[i], step);
> > + if (ret)
> > + break;
> > }
> >
> > if (ret)
> > - dev_err(&client->dev, "Error transferring data
> > from fifo\n");
> > + dev_err(data->dev, "Error transferring data from
> > fifo in single steps of %zu\n",
> > + step);
> >
> > return ret;
> > }
> > @@ -963,14 +924,15 @@ static int __bmc150_accel_fifo_flush(struct
> > iio_dev *indio_dev,
> > u16 buffer[BMC150_ACCEL_FIFO_LENGTH * 3];
> > int64_t tstamp;
> > uint64_t sample_period;
> > - ret = i2c_smbus_read_byte_data(data->client,
> > -
> > BMC150_ACCEL_REG_FIFO_STATUS);
> > + unsigned int val;
> > +
> > + ret = regmap_read(data->regmap,
> > BMC150_ACCEL_REG_FIFO_STATUS, &val);
> > if (ret < 0) {
> > dev_err(&data->client->dev, "Error reading
> > reg_fifo_status\n");
> > return ret;
> > }
> >
> > - count = ret & 0x7F;
> > + count = val & 0x7F;
> >
> > if (!count)
> > return 0;
> > @@ -1009,7 +971,7 @@ static int __bmc150_accel_fifo_flush(struct
> > iio_dev *indio_dev,
> > if (samples && count > samples)
> > count = samples;
> >
> > - ret = bmc150_accel_fifo_transfer(data->client, (u8
> > *)buffer, count);
> > + ret = bmc150_accel_fifo_transfer(data, (u8 *)buffer,
> > count);
> > if (ret)
> > return ret;
> >
> > @@ -1206,17 +1168,19 @@ static irqreturn_t
> > bmc150_accel_trigger_handler(int irq, void *p)
> > struct iio_dev *indio_dev = pf->indio_dev;
> > struct bmc150_accel_data *data = iio_priv(indio_dev);
> > int bit, ret, i = 0;
> > + unsigned int raw_val;
> >
> > mutex_lock(&data->mutex);
> > for_each_set_bit(bit, indio_dev->active_scan_mask,
> > indio_dev->masklength) {
> > - ret = i2c_smbus_read_word_data(data->client,
> > -
> > BMC150_ACCEL_AXIS_TO_REG(bit));
> > + ret = regmap_bulk_read(data->regmap,
> > +
> > BMC150_ACCEL_AXIS_TO_REG(bit), &raw_val,
> > + 2);
> > if (ret < 0) {
> > mutex_unlock(&data->mutex);
> > goto err_read;
> > }
> > - data->buffer[i++] = ret;
> > + data->buffer[i++] = raw_val;
> > }
> > mutex_unlock(&data->mutex);
> >
> > @@ -1240,10 +1204,9 @@ static int bmc150_accel_trig_try_reen(struct
> > iio_trigger *trig)
> >
> > mutex_lock(&data->mutex);
> > /* clear any latched interrupt */
> > - ret = i2c_smbus_write_byte_data(data->client,
> > - BMC150_ACCEL_REG_INT_RST_L
> > ATCH,
> > - BMC150_ACCEL_INT_MODE_LATC
> > H_INT |
> > - BMC150_ACCEL_INT_MODE_LATC
> > H_RESET);
> > + ret = regmap_write(data->regmap,
> > BMC150_ACCEL_REG_INT_RST_LATCH,
> > + BMC150_ACCEL_INT_MODE_LATCH_INT |
> > + BMC150_ACCEL_INT_MODE_LATCH_RESET);
> > mutex_unlock(&data->mutex);
> > if (ret < 0) {
> > dev_err(&data->client->dev,
> > @@ -1300,34 +1263,34 @@ static int
> > bmc150_accel_handle_roc_event(struct iio_dev *indio_dev)
> > struct bmc150_accel_data *data = iio_priv(indio_dev);
> > int dir;
> > int ret;
> > + unsigned int val;
> >
> > - ret = i2c_smbus_read_byte_data(data->client,
> > -
> > BMC150_ACCEL_REG_INT_STATUS_2);
> > + ret = regmap_read(data->regmap,
> > BMC150_ACCEL_REG_INT_STATUS_2, &val);
> > if (ret < 0) {
> > dev_err(&data->client->dev, "Error reading
> > reg_int_status_2\n");
> > return ret;
> > }
> >
> > - if (ret & BMC150_ACCEL_ANY_MOTION_BIT_SIGN)
> > + if (val & BMC150_ACCEL_ANY_MOTION_BIT_SIGN)
> > dir = IIO_EV_DIR_FALLING;
> > else
> > dir = IIO_EV_DIR_RISING;
> >
> > - if (ret & BMC150_ACCEL_ANY_MOTION_BIT_X)
> > + if (val & BMC150_ACCEL_ANY_MOTION_BIT_X)
> > iio_push_event(indio_dev,
> > IIO_MOD_EVENT_CODE(IIO_ACCEL,
> > 0,
> > IIO_MOD_X,
> > IIO_EV_TYP
> > E_ROC,
> > dir),
> > data
> > ->timestamp);
> > - if (ret & BMC150_ACCEL_ANY_MOTION_BIT_Y)
> > + if (val & BMC150_ACCEL_ANY_MOTION_BIT_Y)
> > iio_push_event(indio_dev,
> > IIO_MOD_EVENT_CODE(IIO_ACCEL,
> > 0,
> > IIO_MOD_Y,
> > IIO_EV_TYP
> > E_ROC,
> > dir),
> > data
> > ->timestamp);
> > - if (ret & BMC150_ACCEL_ANY_MOTION_BIT_Z)
> > + if (val & BMC150_ACCEL_ANY_MOTION_BIT_Z)
> > iio_push_event(indio_dev,
> > IIO_MOD_EVENT_CODE(IIO_ACCEL,
> > 0,
> > IIO_MOD_Z,
> > @@ -1360,10 +1323,9 @@ static irqreturn_t
> > bmc150_accel_irq_thread_handler(int irq, void *private)
> > }
> >
> > if (ack) {
> > - ret = i2c_smbus_write_byte_data(data->client,
> > - BMC150_ACCEL_REG_INT_RST_L
> > ATCH,
> > - BMC150_ACCEL_INT_MODE_LATC
> > H_INT |
> > - BMC150_ACCEL_INT_MODE_LATC
> > H_RESET);
> > + ret = regmap_write(data->regmap,
> > BMC150_ACCEL_REG_INT_RST_LATCH,
> > + BMC150_ACCEL_INT_MODE_LATCH_INT
> > |
> > +
> > BMC150_ACCEL_INT_MODE_LATCH_RESET);
> > if (ret)
> > dev_err(&data->client->dev, "Error writing
> > reg_int_rst_latch\n");
> > ret = IRQ_HANDLED;
> > @@ -1516,7 +1478,7 @@ static int bmc150_accel_fifo_set_mode(struct
> > bmc150_accel_data *data)
> > u8 reg = BMC150_ACCEL_REG_FIFO_CONFIG1;
> > int ret;
> >
> > - ret = i2c_smbus_write_byte_data(data->client, reg, data
> > ->fifo_mode);
> > + ret = regmap_write(data->regmap, reg, data->fifo_mode);
> > if (ret < 0) {
> > dev_err(&data->client->dev, "Error writing
> > reg_fifo_config1\n");
> > return ret;
> > @@ -1525,9 +1487,8 @@ static int bmc150_accel_fifo_set_mode(struct
> > bmc150_accel_data *data)
> > if (!data->fifo_mode)
> > return 0;
> >
> > - ret = i2c_smbus_write_byte_data(data->client,
> > - BMC150_ACCEL_REG_FIFO_CONF
> > IG0,
> > - data->watermark);
> > + ret = regmap_write(data->regmap,
> > BMC150_ACCEL_REG_FIFO_CONFIG0,
> > + data->watermark);
> > if (ret < 0)
> > dev_err(&data->client->dev, "Error writing
> > reg_fifo_config0\n");
> >
> > @@ -1627,6 +1588,13 @@ static int bmc150_accel_probe(struct
> > i2c_client *client,
> > data = iio_priv(indio_dev);
> > i2c_set_clientdata(client, indio_dev);
> > data->client = client;
> > + data->dev = &client->dev;
> > +
> > + data->regmap = devm_regmap_init_i2c(client,
> > &bmc150_i2c_regmap_conf);
> > + if (IS_ERR(data->regmap)) {
> > + dev_err(&client->dev, "Failed to initialize i2c
> > regmap\n");
> > + return PTR_ERR(data->regmap);
> > + }
> >
> > if (id) {
> > name = id->name;
> > @@ -1680,9 +1648,8 @@ static int bmc150_accel_probe(struct
> > i2c_client *client,
> > * want to use latch mode when we can to prevent
> > interrupt
> > * flooding.
> > */
> > - ret = i2c_smbus_write_byte_data(data->client,
> > - BMC150_ACCEL_REG_I
> > NT_RST_LATCH,
> > -
> > BMC150_ACCEL_INT_MODE_LATCH_RESET);
> > + ret = regmap_write(data->regmap,
> > BMC150_ACCEL_REG_INT_RST_LATCH,
> > +
> > BMC150_ACCEL_INT_MODE_LATCH_RESET);
> > if (ret < 0) {
> > dev_err(&data->client->dev, "Error writing
> > reg_int_rst_latch\n");
> > goto err_buffer_cleanup;
> >
>
--
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| From | Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> |
|---|---|
| Date | 2015-09-01 16:00 +0200 |
| Subject | Re: [PATCH v2 1/4] iio: bmc150: Use i2c regmap |
| Message-ID | <q3Ugq-8lN-17@gated-at.bofh.it> |
| In reply to | #1216298 |
On Mon, 2015-08-31 at 17:11 +0100, Jonathan Cameron wrote:
> On 20/08/15 13:49, Markus Pargmann wrote:
> > This replaces all usage of direct i2c accesses with regmap
> > accesses.
> >
> > Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
> Looks fine to me, but I will be wanting an Ack / reviewed-by
> and preferably a tested by from Srinivas.
Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
I requested Irina, if she can test this patch.
Thanks,
Srinivas
>
> Thanks,
>
> Jonathan
> > ---
> > drivers/iio/accel/Kconfig | 2 +
> > drivers/iio/accel/bmc150-accel.c | 219 +++++++++++++++++----------
> > ------------
> > 2 files changed, 95 insertions(+), 126 deletions(-)
> >
> > diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig
> > index 00e7bcbdbe24..01dd03d194d1 100644
> > --- a/drivers/iio/accel/Kconfig
> > +++ b/drivers/iio/accel/Kconfig
> > @@ -22,6 +22,8 @@ config BMC150_ACCEL
> > depends on I2C
> > select IIO_BUFFER
> > select IIO_TRIGGERED_BUFFER
> > + select REGMAP
> > + select REGMAP_I2C
> > help
> > Say yes here to build support for the following Bosch
> > accelerometers:
> > BMC150, BMI055, BMA250E, BMA222E, BMA255, BMA280.
> > diff --git a/drivers/iio/accel/bmc150-accel.c
> > b/drivers/iio/accel/bmc150-accel.c
> > index 55751d9e1ade..c5c773e75173 100644
> > --- a/drivers/iio/accel/bmc150-accel.c
> > +++ b/drivers/iio/accel/bmc150-accel.c
> > @@ -35,6 +35,7 @@
> > #include <linux/iio/trigger.h>
> > #include <linux/iio/trigger_consumer.h>
> > #include <linux/iio/triggered_buffer.h>
> > +#include <linux/regmap.h>
> >
> > #define BMC150_ACCEL_DRV_NAME "bmc150_accel
> > "
> > #define BMC150_ACCEL_IRQ_NAME "bmc150_accel
> > _event"
> > @@ -185,6 +186,8 @@ enum bmc150_accel_trigger_id {
> >
> > struct bmc150_accel_data {
> > struct i2c_client *client;
> > + struct regmap *regmap;
> > + struct device *dev;
> > struct bmc150_accel_interrupt
> > interrupts[BMC150_ACCEL_INTERRUPTS];
> > atomic_t active_intr;
> > struct bmc150_accel_trigger
> > triggers[BMC150_ACCEL_TRIGGERS];
> > @@ -241,6 +244,11 @@ static const struct {
> > {500000,
> > BMC150_ACCEL_SLEEP_500_MS},
> > {1000000,
> > BMC150_ACCEL_SLEEP_1_SEC} };
> >
> > +static const struct regmap_config bmc150_i2c_regmap_conf = {
> > + .reg_bits = 8,
> > + .val_bits = 8,
> > + .max_register = 0x3f,
> > +};
> >
> > static int bmc150_accel_set_mode(struct bmc150_accel_data *data,
> > enum bmc150_power_modes mode,
> > @@ -270,8 +278,7 @@ static int bmc150_accel_set_mode(struct
> > bmc150_accel_data *data,
> >
> > dev_dbg(&data->client->dev, "Set Mode bits %x\n",
> > lpw_bits);
> >
> > - ret = i2c_smbus_write_byte_data(data->client,
> > - BMC150_ACCEL_REG_PMU_LPW,
> > lpw_bits);
> > + ret = regmap_write(data->regmap, BMC150_ACCEL_REG_PMU_LPW,
> > lpw_bits);
> > if (ret < 0) {
> > dev_err(&data->client->dev, "Error writing
> > reg_pmu_lpw\n");
> > return ret;
> > @@ -289,8 +296,7 @@ static int bmc150_accel_set_bw(struct
> > bmc150_accel_data *data, int val,
> > for (i = 0; i < ARRAY_SIZE(bmc150_accel_samp_freq_table);
> > ++i) {
> > if (bmc150_accel_samp_freq_table[i].val == val &&
> > bmc150_accel_samp_freq_table[i].va
> > l2 == val2) {
> > - ret = i2c_smbus_write_byte_data(
> > - data->client,
> > + ret = regmap_write(data->regmap,
> > BMC150_ACCEL_REG_PMU_BW,
> > bmc150_accel_samp_freq_table[i].bw
> > _bits);
> > if (ret < 0)
> > @@ -307,26 +313,19 @@ static int bmc150_accel_set_bw(struct
> > bmc150_accel_data *data, int val,
> >
> > static int bmc150_accel_update_slope(struct bmc150_accel_data
> > *data)
> > {
> > - int ret, val;
> > + int ret;
> >
> > - ret = i2c_smbus_write_byte_data(data->client,
> > BMC150_ACCEL_REG_INT_6,
> > + ret = regmap_write(data->regmap, BMC150_ACCEL_REG_INT_6,
> > data->slope_thres);
> > if (ret < 0) {
> > dev_err(&data->client->dev, "Error writing
> > reg_int_6\n");
> > return ret;
> > }
> >
> > - ret = i2c_smbus_read_byte_data(data->client,
> > BMC150_ACCEL_REG_INT_5);
> > + ret = regmap_update_bits(data->regmap,
> > BMC150_ACCEL_REG_INT_5,
> > + BMC150_ACCEL_SLOPE_DUR_MASK, data
> > ->slope_dur);
> > if (ret < 0) {
> > - dev_err(&data->client->dev, "Error reading
> > reg_int_5\n");
> > - return ret;
> > - }
> > -
> > - val = (ret & ~BMC150_ACCEL_SLOPE_DUR_MASK) | data
> > ->slope_dur;
> > - ret = i2c_smbus_write_byte_data(data->client,
> > BMC150_ACCEL_REG_INT_5,
> > - val);
> > - if (ret < 0) {
> > - dev_err(&data->client->dev, "Error write
> > reg_int_5\n");
> > + dev_err(&data->client->dev, "Error updating
> > reg_int_5\n");
> > return ret;
> > }
> >
> > @@ -348,17 +347,18 @@ static int
> > bmc150_accel_any_motion_setup(struct bmc150_accel_trigger *t,
> > static int bmc150_accel_chip_init(struct bmc150_accel_data *data)
> > {
> > int ret;
> > + unsigned int val;
> >
> > - ret = i2c_smbus_read_byte_data(data->client,
> > BMC150_ACCEL_REG_CHIP_ID);
> > + ret = regmap_read(data->regmap, BMC150_ACCEL_REG_CHIP_ID,
> > &val);
> > if (ret < 0) {
> > dev_err(&data->client->dev,
> > "Error: Reading chip id\n");
> > return ret;
> > }
> >
> > - dev_dbg(&data->client->dev, "Chip Id %x\n", ret);
> > - if (ret != data->chip_info->chip_id) {
> > - dev_err(&data->client->dev, "Invalid chip %x\n",
> > ret);
> > + dev_dbg(&data->client->dev, "Chip Id %x\n", val);
> > + if (val != data->chip_info->chip_id) {
> > + dev_err(&data->client->dev, "Invalid chip %x\n",
> > val);
> > return -ENODEV;
> > }
> >
> > @@ -372,9 +372,8 @@ static int bmc150_accel_chip_init(struct
> > bmc150_accel_data *data)
> > return ret;
> >
> > /* Set Default Range */
> > - ret = i2c_smbus_write_byte_data(data->client,
> > - BMC150_ACCEL_REG_PMU_RANGE
> > ,
> > - BMC150_ACCEL_DEF_RANGE_4G)
> > ;
> > + ret = regmap_write(data->regmap,
> > BMC150_ACCEL_REG_PMU_RANGE,
> > + BMC150_ACCEL_DEF_RANGE_4G);
> > if (ret < 0) {
> > dev_err(&data->client->dev,
> > "Error writing
> > reg_pmu_range\n");
> > @@ -391,10 +390,9 @@ static int bmc150_accel_chip_init(struct
> > bmc150_accel_data *data)
> > return ret;
> >
> > /* Set default as latched interrupts */
> > - ret = i2c_smbus_write_byte_data(data->client,
> > - BMC150_ACCEL_REG_INT_RST_L
> > ATCH,
> > - BMC150_ACCEL_INT_MODE_LATC
> > H_INT |
> > - BMC150_ACCEL_INT_MODE_LATC
> > H_RESET);
> > + ret = regmap_write(data->regmap,
> > BMC150_ACCEL_REG_INT_RST_LATCH,
> > + BMC150_ACCEL_INT_MODE_LATCH_INT |
> > + BMC150_ACCEL_INT_MODE_LATCH_RESET);
> > if (ret < 0) {
> > dev_err(&data->client->dev,
> > "Error writing reg_int_rst_latch\n");
> > @@ -527,38 +525,18 @@ static int bmc150_accel_set_interrupt(struct
> > bmc150_accel_data *data, int i,
> > return ret;
> >
> > /* map the interrupt to the appropriate pins */
> > - ret = i2c_smbus_read_byte_data(data->client, info
> > ->map_reg);
> > + ret = regmap_update_bits(data->regmap, info->map_reg, info
> > ->map_bitmask,
> > + (state ? info->map_bitmask : 0));
> > if (ret < 0) {
> > - dev_err(&data->client->dev, "Error reading
> > reg_int_map\n");
> > - goto out_fix_power_state;
> > - }
> > - if (state)
> > - ret |= info->map_bitmask;
> > - else
> > - ret &= ~info->map_bitmask;
> > -
> > - ret = i2c_smbus_write_byte_data(data->client, info
> > ->map_reg,
> > - ret);
> > - if (ret < 0) {
> > - dev_err(&data->client->dev, "Error writing
> > reg_int_map\n");
> > + dev_err(&data->client->dev, "Error updating
> > reg_int_map\n");
> > goto out_fix_power_state;
> > }
> >
> > /* enable/disable the interrupt */
> > - ret = i2c_smbus_read_byte_data(data->client, info
> > ->en_reg);
> > + ret = regmap_update_bits(data->regmap, info->en_reg, info
> > ->en_bitmask,
> > + (state ? info->en_bitmask : 0));
> > if (ret < 0) {
> > - dev_err(&data->client->dev, "Error reading
> > reg_int_en\n");
> > - goto out_fix_power_state;
> > - }
> > -
> > - if (state)
> > - ret |= info->en_bitmask;
> > - else
> > - ret &= ~info->en_bitmask;
> > -
> > - ret = i2c_smbus_write_byte_data(data->client, info
> > ->en_reg, ret);
> > - if (ret < 0) {
> > - dev_err(&data->client->dev, "Error writing
> > reg_int_en\n");
> > + dev_err(&data->client->dev, "Error updating
> > reg_int_en\n");
> > goto out_fix_power_state;
> > }
> >
> > @@ -581,8 +559,7 @@ static int bmc150_accel_set_scale(struct
> > bmc150_accel_data *data, int val)
> >
> > for (i = 0; i < ARRAY_SIZE(data->chip_info->scale_table);
> > ++i) {
> > if (data->chip_info->scale_table[i].scale == val)
> > {
> > - ret = i2c_smbus_write_byte_data(
> > - data->client,
> > + ret = regmap_write(data->regmap,
> > BMC150_ACCEL_REG_PMU_RANGE,
> > data->chip_info
> > ->scale_table[i].reg_range);
> > if (ret < 0) {
> > @@ -602,16 +579,17 @@ static int bmc150_accel_set_scale(struct
> > bmc150_accel_data *data, int val)
> > static int bmc150_accel_get_temp(struct bmc150_accel_data *data,
> > int *val)
> > {
> > int ret;
> > + unsigned int value;
> >
> > mutex_lock(&data->mutex);
> >
> > - ret = i2c_smbus_read_byte_data(data->client,
> > BMC150_ACCEL_REG_TEMP);
> > + ret = regmap_read(data->regmap, BMC150_ACCEL_REG_TEMP,
> > &value);
> > if (ret < 0) {
> > dev_err(&data->client->dev, "Error reading
> > reg_temp\n");
> > mutex_unlock(&data->mutex);
> > return ret;
> > }
> > - *val = sign_extend32(ret, 7);
> > + *val = sign_extend32(value, 7);
> >
> > mutex_unlock(&data->mutex);
> >
> > @@ -624,6 +602,7 @@ static int bmc150_accel_get_axis(struct
> > bmc150_accel_data *data,
> > {
> > int ret;
> > int axis = chan->scan_index;
> > + unsigned int raw_val;
> >
> > mutex_lock(&data->mutex);
> > ret = bmc150_accel_set_power_state(data, true);
> > @@ -632,15 +611,15 @@ static int bmc150_accel_get_axis(struct
> > bmc150_accel_data *data,
> > return ret;
> > }
> >
> > - ret = i2c_smbus_read_word_data(data->client,
> > -
> > BMC150_ACCEL_AXIS_TO_REG(axis));
> > + ret = regmap_bulk_read(data->regmap,
> > BMC150_ACCEL_AXIS_TO_REG(axis),
> > + &raw_val, 2);
> > if (ret < 0) {
> > dev_err(&data->client->dev, "Error reading axis
> > %d\n", axis);
> > bmc150_accel_set_power_state(data, false);
> > mutex_unlock(&data->mutex);
> > return ret;
> > }
> > - *val = sign_extend32(ret >> chan->scan_type.shift,
> > + *val = sign_extend32(raw_val >> chan->scan_type.shift,
> > chan->scan_type.realbits - 1);
> > ret = bmc150_accel_set_power_state(data, false);
> > mutex_unlock(&data->mutex);
> > @@ -904,52 +883,34 @@ static int bmc150_accel_set_watermark(struct
> > iio_dev *indio_dev, unsigned val)
> > * We must read at least one full frame in one burst, otherwise
> > the rest of the
> > * frame data is discarded.
> > */
> > -static int bmc150_accel_fifo_transfer(const struct i2c_client
> > *client,
> > +static int bmc150_accel_fifo_transfer(struct bmc150_accel_data
> > *data,
> > char *buffer, int samples)
> > {
> > int sample_length = 3 * 2;
> > - u8 reg_fifo_data = BMC150_ACCEL_REG_FIFO_DATA;
> > - int ret = -EIO;
> > -
> > - if (i2c_check_functionality(client->adapter,
> > I2C_FUNC_I2C)) {
> > - struct i2c_msg msg[2] = {
> > - {
> > - .addr = client->addr,
> > - .flags = 0,
> > - .buf = ®_fifo_data,
> > - .len = sizeof(reg_fifo_data),
> > - },
> > - {
> > - .addr = client->addr,
> > - .flags = I2C_M_RD,
> > - .buf = (u8 *)buffer,
> > - .len = samples * sample_length,
> > - }
> > - };
> > + int ret;
> > + int total_length = samples * sample_length;
> > + int i;
> > + int step = regmap_get_raw_read_max(data->regmap);
> >
> > - ret = i2c_transfer(client->adapter, msg, 2);
> > - if (ret != 2)
> > - ret = -EIO;
> > - else
> > - ret = 0;
> > - } else {
> > - int i, step = I2C_SMBUS_BLOCK_MAX / sample_length;
> > -
> > - for (i = 0; i < samples * sample_length; i +=
> > step) {
> > - ret =
> > i2c_smbus_read_i2c_block_data(client,
> > -
> > reg_fifo_data, step,
> > -
> > &buffer[i]);
> > - if (ret != step) {
> > - ret = -EIO;
> > - break;
> > - }
> > + if (!step || step > total_length)
> > + step = total_length;
> > + else if (step < total_length)
> > + step = sample_length;
> >
> > - ret = 0;
> > - }
> > + /*
> > + * Seems we have a bus with size limitation so we have to
> > execute
> > + * multiple reads
> > + */
> > + for (i = 0; i < total_length; i += step) {
> > + ret = regmap_raw_read(data->regmap,
> > BMC150_ACCEL_REG_FIFO_DATA,
> > + &buffer[i], step);
> > + if (ret)
> > + break;
> > }
> >
> > if (ret)
> > - dev_err(&client->dev, "Error transferring data
> > from fifo\n");
> > + dev_err(data->dev, "Error transferring data from
> > fifo in single steps of %zu\n",
> > + step);
> >
> > return ret;
> > }
> > @@ -963,14 +924,15 @@ static int __bmc150_accel_fifo_flush(struct
> > iio_dev *indio_dev,
> > u16 buffer[BMC150_ACCEL_FIFO_LENGTH * 3];
> > int64_t tstamp;
> > uint64_t sample_period;
> > - ret = i2c_smbus_read_byte_data(data->client,
> > -
> > BMC150_ACCEL_REG_FIFO_STATUS);
> > + unsigned int val;
> > +
> > + ret = regmap_read(data->regmap,
> > BMC150_ACCEL_REG_FIFO_STATUS, &val);
> > if (ret < 0) {
> > dev_err(&data->client->dev, "Error reading
> > reg_fifo_status\n");
> > return ret;
> > }
> >
> > - count = ret & 0x7F;
> > + count = val & 0x7F;
> >
> > if (!count)
> > return 0;
> > @@ -1009,7 +971,7 @@ static int __bmc150_accel_fifo_flush(struct
> > iio_dev *indio_dev,
> > if (samples && count > samples)
> > count = samples;
> >
> > - ret = bmc150_accel_fifo_transfer(data->client, (u8
> > *)buffer, count);
> > + ret = bmc150_accel_fifo_transfer(data, (u8 *)buffer,
> > count);
> > if (ret)
> > return ret;
> >
> > @@ -1206,17 +1168,19 @@ static irqreturn_t
> > bmc150_accel_trigger_handler(int irq, void *p)
> > struct iio_dev *indio_dev = pf->indio_dev;
> > struct bmc150_accel_data *data = iio_priv(indio_dev);
> > int bit, ret, i = 0;
> > + unsigned int raw_val;
> >
> > mutex_lock(&data->mutex);
> > for_each_set_bit(bit, indio_dev->active_scan_mask,
> > indio_dev->masklength) {
> > - ret = i2c_smbus_read_word_data(data->client,
> > -
> > BMC150_ACCEL_AXIS_TO_REG(bit));
> > + ret = regmap_bulk_read(data->regmap,
> > +
> > BMC150_ACCEL_AXIS_TO_REG(bit), &raw_val,
> > + 2);
> > if (ret < 0) {
> > mutex_unlock(&data->mutex);
> > goto err_read;
> > }
> > - data->buffer[i++] = ret;
> > + data->buffer[i++] = raw_val;
> > }
> > mutex_unlock(&data->mutex);
> >
> > @@ -1240,10 +1204,9 @@ static int bmc150_accel_trig_try_reen(struct
> > iio_trigger *trig)
> >
> > mutex_lock(&data->mutex);
> > /* clear any latched interrupt */
> > - ret = i2c_smbus_write_byte_data(data->client,
> > - BMC150_ACCEL_REG_INT_RST_L
> > ATCH,
> > - BMC150_ACCEL_INT_MODE_LATC
> > H_INT |
> > - BMC150_ACCEL_INT_MODE_LATC
> > H_RESET);
> > + ret = regmap_write(data->regmap,
> > BMC150_ACCEL_REG_INT_RST_LATCH,
> > + BMC150_ACCEL_INT_MODE_LATCH_INT |
> > + BMC150_ACCEL_INT_MODE_LATCH_RESET);
> > mutex_unlock(&data->mutex);
> > if (ret < 0) {
> > dev_err(&data->client->dev,
> > @@ -1300,34 +1263,34 @@ static int
> > bmc150_accel_handle_roc_event(struct iio_dev *indio_dev)
> > struct bmc150_accel_data *data = iio_priv(indio_dev);
> > int dir;
> > int ret;
> > + unsigned int val;
> >
> > - ret = i2c_smbus_read_byte_data(data->client,
> > -
> > BMC150_ACCEL_REG_INT_STATUS_2);
> > + ret = regmap_read(data->regmap,
> > BMC150_ACCEL_REG_INT_STATUS_2, &val);
> > if (ret < 0) {
> > dev_err(&data->client->dev, "Error reading
> > reg_int_status_2\n");
> > return ret;
> > }
> >
> > - if (ret & BMC150_ACCEL_ANY_MOTION_BIT_SIGN)
> > + if (val & BMC150_ACCEL_ANY_MOTION_BIT_SIGN)
> > dir = IIO_EV_DIR_FALLING;
> > else
> > dir = IIO_EV_DIR_RISING;
> >
> > - if (ret & BMC150_ACCEL_ANY_MOTION_BIT_X)
> > + if (val & BMC150_ACCEL_ANY_MOTION_BIT_X)
> > iio_push_event(indio_dev,
> > IIO_MOD_EVENT_CODE(IIO_ACCEL,
> > 0,
> > IIO_MOD_X,
> > IIO_EV_TYP
> > E_ROC,
> > dir),
> > data
> > ->timestamp);
> > - if (ret & BMC150_ACCEL_ANY_MOTION_BIT_Y)
> > + if (val & BMC150_ACCEL_ANY_MOTION_BIT_Y)
> > iio_push_event(indio_dev,
> > IIO_MOD_EVENT_CODE(IIO_ACCEL,
> > 0,
> > IIO_MOD_Y,
> > IIO_EV_TYP
> > E_ROC,
> > dir),
> > data
> > ->timestamp);
> > - if (ret & BMC150_ACCEL_ANY_MOTION_BIT_Z)
> > + if (val & BMC150_ACCEL_ANY_MOTION_BIT_Z)
> > iio_push_event(indio_dev,
> > IIO_MOD_EVENT_CODE(IIO_ACCEL,
> > 0,
> > IIO_MOD_Z,
> > @@ -1360,10 +1323,9 @@ static irqreturn_t
> > bmc150_accel_irq_thread_handler(int irq, void *private)
> > }
> >
> > if (ack) {
> > - ret = i2c_smbus_write_byte_data(data->client,
> > - BMC150_ACCEL_REG_INT_RST_L
> > ATCH,
> > - BMC150_ACCEL_INT_MODE_LATC
> > H_INT |
> > - BMC150_ACCEL_INT_MODE_LATC
> > H_RESET);
> > + ret = regmap_write(data->regmap,
> > BMC150_ACCEL_REG_INT_RST_LATCH,
> > + BMC150_ACCEL_INT_MODE_LATCH_INT
> > |
> > +
> > BMC150_ACCEL_INT_MODE_LATCH_RESET);
> > if (ret)
> > dev_err(&data->client->dev, "Error writing
> > reg_int_rst_latch\n");
> > ret = IRQ_HANDLED;
> > @@ -1516,7 +1478,7 @@ static int bmc150_accel_fifo_set_mode(struct
> > bmc150_accel_data *data)
> > u8 reg = BMC150_ACCEL_REG_FIFO_CONFIG1;
> > int ret;
> >
> > - ret = i2c_smbus_write_byte_data(data->client, reg, data
> > ->fifo_mode);
> > + ret = regmap_write(data->regmap, reg, data->fifo_mode);
> > if (ret < 0) {
> > dev_err(&data->client->dev, "Error writing
> > reg_fifo_config1\n");
> > return ret;
> > @@ -1525,9 +1487,8 @@ static int bmc150_accel_fifo_set_mode(struct
> > bmc150_accel_data *data)
> > if (!data->fifo_mode)
> > return 0;
> >
> > - ret = i2c_smbus_write_byte_data(data->client,
> > - BMC150_ACCEL_REG_FIFO_CONF
> > IG0,
> > - data->watermark);
> > + ret = regmap_write(data->regmap,
> > BMC150_ACCEL_REG_FIFO_CONFIG0,
> > + data->watermark);
> > if (ret < 0)
> > dev_err(&data->client->dev, "Error writing
> > reg_fifo_config0\n");
> >
> > @@ -1627,6 +1588,13 @@ static int bmc150_accel_probe(struct
> > i2c_client *client,
> > data = iio_priv(indio_dev);
> > i2c_set_clientdata(client, indio_dev);
> > data->client = client;
> > + data->dev = &client->dev;
> > +
> > + data->regmap = devm_regmap_init_i2c(client,
> > &bmc150_i2c_regmap_conf);
> > + if (IS_ERR(data->regmap)) {
> > + dev_err(&client->dev, "Failed to initialize i2c
> > regmap\n");
> > + return PTR_ERR(data->regmap);
> > + }
> >
> > if (id) {
> > name = id->name;
> > @@ -1680,9 +1648,8 @@ static int bmc150_accel_probe(struct
> > i2c_client *client,
> > * want to use latch mode when we can to prevent
> > interrupt
> > * flooding.
> > */
> > - ret = i2c_smbus_write_byte_data(data->client,
> > - BMC150_ACCEL_REG_I
> > NT_RST_LATCH,
> > -
> > BMC150_ACCEL_INT_MODE_LATCH_RESET);
> > + ret = regmap_write(data->regmap,
> > BMC150_ACCEL_REG_INT_RST_LATCH,
> > +
> > BMC150_ACCEL_INT_MODE_LATCH_RESET);
> > if (ret < 0) {
> > dev_err(&data->client->dev, "Error writing
> > reg_int_rst_latch\n");
> > goto err_buffer_cleanup;
> >
>
--
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| From | Markus Pargmann <mpa@pengutronix.de> |
|---|---|
| Date | 2015-08-20 15:00 +0200 |
| Subject | [PATCH v2 4/4] iio: bmc150: Add SPI driver |
| Message-ID | <pZxBQ-5jT-103@gated-at.bofh.it> |
| In reply to | #1210485 |
Add a simple SPI driver which initializes the spi regmap for the bmc150
core driver.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
---
drivers/iio/accel/Kconfig | 5 +++
drivers/iio/accel/Makefile | 1 +
drivers/iio/accel/bmc150-accel-spi.c | 83 ++++++++++++++++++++++++++++++++++++
3 files changed, 89 insertions(+)
create mode 100644 drivers/iio/accel/bmc150-accel-spi.c
diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig
index 6da4eb0db57b..56d24fa3d34a 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..1c2a4f683da4
--- /dev/null
+++ b/drivers/iio/accel/bmc150-accel-spi.c
@@ -0,0 +1,83 @@
+/*
+ * 3-axis accelerometer driver supporting following I2C Bosch-Sensortec chips:
+ * - BMC150
+ * - BMI055
+ * - BMA255
+ * - BMA250E
+ * - BMA222E
+ * - BMA280
+ *
+ * Copyright (c) 2014, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ */
+
+#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, id->driver_data, 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@pengutronix.de>");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("BMC150 SPI accelerometer driver");
--
2.4.6
--
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| From | Jonathan Cameron <jic23@kernel.org> |
|---|---|
| Date | 2015-08-31 18:20 +0200 |
| Subject | Re: [PATCH v2 4/4] iio: bmc150: Add SPI driver |
| Message-ID | <q3zYn-4sz-33@gated-at.bofh.it> |
| In reply to | #1210489 |
On 20/08/15 13:49, Markus Pargmann wrote:
> Add a simple SPI driver which initializes the spi regmap for the bmc150
> core driver.
>
> Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Looks good to me, but clearly will have to wait for the earlier
patches in the series.
Nearly there!
Jonathan
> ---
> drivers/iio/accel/Kconfig | 5 +++
> drivers/iio/accel/Makefile | 1 +
> drivers/iio/accel/bmc150-accel-spi.c | 83 ++++++++++++++++++++++++++++++++++++
> 3 files changed, 89 insertions(+)
> create mode 100644 drivers/iio/accel/bmc150-accel-spi.c
>
> diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig
> index 6da4eb0db57b..56d24fa3d34a 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..1c2a4f683da4
> --- /dev/null
> +++ b/drivers/iio/accel/bmc150-accel-spi.c
> @@ -0,0 +1,83 @@
> +/*
> + * 3-axis accelerometer driver supporting following I2C Bosch-Sensortec chips:
> + * - BMC150
> + * - BMI055
> + * - BMA255
> + * - BMA250E
> + * - BMA222E
> + * - BMA280
> + *
> + * Copyright (c) 2014, Intel Corporation.
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms and conditions of the GNU General Public License,
> + * version 2, as published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope 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.
> + */
> +
> +#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, id->driver_data, 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@pengutronix.de>");
> +MODULE_LICENSE("GPL v2");
> +MODULE_DESCRIPTION("BMC150 SPI accelerometer driver");
>
--
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| From | Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> |
|---|---|
| Date | 2015-09-01 16:20 +0200 |
| Subject | Re: [PATCH v2 4/4] iio: bmc150: Add SPI driver |
| Message-ID | <q3UzM-w6-27@gated-at.bofh.it> |
| In reply to | #1216300 |
On Mon, 2015-08-31 at 17:18 +0100, Jonathan Cameron wrote:
> On 20/08/15 13:49, Markus Pargmann wrote:
> > Add a simple SPI driver which initializes the spi regmap for the
> > bmc150
> > core driver.
> >
> > Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
> Looks good to me, but clearly will have to wait for the earlier
> patches in the series.
>
> Nearly there!
>
> Jonathan
> > ---
> > drivers/iio/accel/Kconfig | 5 +++
> > drivers/iio/accel/Makefile | 1 +
> > drivers/iio/accel/bmc150-accel-spi.c | 83
> > ++++++++++++++++++++++++++++++++++++
> > 3 files changed, 89 insertions(+)
> > create mode 100644 drivers/iio/accel/bmc150-accel-spi.c
> >
> > diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig
> > index 6da4eb0db57b..56d24fa3d34a 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..1c2a4f683da4
> > --- /dev/null
> > +++ b/drivers/iio/accel/bmc150-accel-spi.c
> > @@ -0,0 +1,83 @@
> > +/*
> > + * 3-axis accelerometer driver supporting following I2C Bosch
> > -Sensortec chips:
> > + * - BMC150
> > + * - BMI055
> > + * - BMA255
> > + * - BMA250E
> > + * - BMA222E
> > + * - BMA280
> > + *
> > + * Copyright (c) 2014, Intel Corporation.
> > + *
> > + * This program is free software; you can redistribute it and/or
> > modify it
> > + * under the terms and conditions of the GNU General Public
> > License,
> > + * version 2, as published by the Free Software Foundation.
> > + *
> > + * This program is distributed in the hope 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.
> > + */
Not sure If you want to carry Intel Copyright for SPI driver part. If
you want to use change the year to 2015.
> > +
> > +#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, id->driver_data,
> > 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@pengutronix.de>");
> > +MODULE_LICENSE("GPL v2");
> > +MODULE_DESCRIPTION("BMC150 SPI accelerometer driver");
> >
>
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