Add ST lsm6dso i3c support

PATCH In review Vitor Soares 4 participants 11 messages Jul 19, 2019 – Oct 3, 2019

Subsystems (3)

IIO I3C ST LSM6DSx IMU IIO driver

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Vitor Soares

author

2019-07-19 13:31 UTC #0 lore raw

v6 cover Add ST lsm6dso i3c support

This patch-series add i3c support for STM LSM6DSO and LSM6DSR sensors.

It is also introduced i3c support on regmap API. Due to the lack of i3c devices with HDR feature on the market the support, for now, is only for i3c SDR mode by using i3c_device_do_priv_xfers() method.

The i3c regmap API is already available in the Git repository at:
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap.git
tags/regmap-i3c

Change in v6:
Improve kerneldoc

Change in v5:
Remove regmap-i3c patch, already applied in regmap tree Fix warning when compiling in 64-bit architecture

Change in v4:
remover hw_id variable from st_lsm6dsx_i3c_probe()

Change in v3:
Update st_lsm6dsx_probe() call
Remove i3c_get_device_id() and use i3c_device_match_id()

Changes in v2:
Change i3c_get_device_id() to drivers/i3c/device.c Add support for LSM6DSR

Vitor Soares (2):
i3c: add i3c_get_device_id helper
iio: imu: st_lsm6dsx: add i3c basic support for LSM6DSO and LSM6DSR

 drivers/i3c/device.c                        | 53 +++++++++++++++++++++++++++
 drivers/i3c/master.c                        | 45 -----------------------
 drivers/iio/imu/st_lsm6dsx/Kconfig          |  8 +++-
 drivers/iio/imu/st_lsm6dsx/Makefile         |  1 +
 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c | 57 +++++++++++++++++++++++++++++
 include/linux/i3c/device.h                  |  4 ++
 6 files changed, 122 insertions(+), 46 deletions(-)
 create mode 100644 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c

Signature · 1 line

2.7.4

Vitor Soares

author

2019-07-19 13:31 UTC #4 lore raw

PATCH v6 2/2 iio: imu: st_lsm6dsx: add i3c basic support for LSM6DSO and LSM6DSR

For today the st_lsm6dsx driver support LSM6DSO and LSM6DSR sensor only in spi and i2c mode.

The LSM6DSO and LSM6DSR are also i3c capable so let's give i3c support to them.

Signed-off-by Vitor Soares <[email protected]>

Acked-by Lorenzo Bianconi <[email protected]>

Reviewed-by Boris Brezillon <[email protected]>

---
Changes in v6:
none

Changes in v5:
Move regmap_config declaration inside st_lsm6dsx_i3c_probe() Fix warning [-Wint-to-void-pointer-cast] when compiling in 64-bit arch

Changes in v4:
Remove hw_id variable

Changes in v3:
Remove unnecessary st_lsm6dsx_i3c_data table used to hold device name Use st_lsm6dsx_probe new form

Changes in v2:
Add support for LSM6DSR
Set pm_ops to st_lsm6dsx_pm_ops

 drivers/iio/imu/st_lsm6dsx/Kconfig          |  8 +++-
 drivers/iio/imu/st_lsm6dsx/Makefile         |  1 +
 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c | 57 +++++++++++++++++++++++++++++
 3 files changed, 65 insertions(+), 1 deletion(-)
 create mode 100644 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c

drivers/iio/imu/st_lsm6dsx/Kconfig +7 -1

index 9e59297..6b5a73c 100644
@@ -1,11 +1,12 @@
 
 config IIO_ST_LSM6DSX
 	tristate "ST_LSM6DSx driver for STM 6-axis IMU MEMS sensors"
-	depends on (I2C || SPI)
+	depends on (I2C || SPI || I3C)
 	select IIO_BUFFER
 	select IIO_KFIFO_BUF
 	select IIO_ST_LSM6DSX_I2C if (I2C)
 	select IIO_ST_LSM6DSX_SPI if (SPI_MASTER)
+	select IIO_ST_LSM6DSX_I3C if (I3C)
 	help
 	  Say yes here to build support for STMicroelectronics LSM6DSx imu
 	  sensor. Supported devices: lsm6ds3, lsm6ds3h, lsm6dsl, lsm6dsm,

@@ -23,3 +24,8 @@ config IIO_ST_LSM6DSX_SPI
 	tristate
 	depends on IIO_ST_LSM6DSX
 	select REGMAP_SPI
+
+config IIO_ST_LSM6DSX_I3C
+	tristate
+	depends on IIO_ST_LSM6DSX
+	select REGMAP_I3C

drivers/iio/imu/st_lsm6dsx/Makefile +1 -0

index e5f733c..c676965 100644
@@ -4,3 +4,4 @@ st_lsm6dsx-y := st_lsm6dsx_core.o st_lsm6dsx_buffer.o \
 obj-$(CONFIG_IIO_ST_LSM6DSX) += st_lsm6dsx.o
 obj-$(CONFIG_IIO_ST_LSM6DSX_I2C) += st_lsm6dsx_i2c.o
 obj-$(CONFIG_IIO_ST_LSM6DSX_SPI) += st_lsm6dsx_spi.o
+obj-$(CONFIG_IIO_ST_LSM6DSX_I3C) += st_lsm6dsx_i3c.o

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c new file +57 -0

57 lines not on this page · raw message

Signature · 1 line

2.7.4

Vitor Soares

author

2019-07-19 13:31 UTC #1 lore raw

PATCH v6 1/2 i3c: move i3c_device_match_id to device.c and export it

In reply to Vitor Soares

Some I3C device drivers need to know which entry matches the i3c_device object passed to the probe function

Let's move i3c_device_match_id() to device.c and export it so it can be used by drivers.

Signed-off-by Vitor Soares <[email protected]>

---
Changes in v6:
Improve kerneldoc

Changes in v5:
Add kerneldoc
Improve commit message

Changes in v4:
None

Changes in v3:
Remove i3c_get_device_id
Move i3c_device_match_id from drivers/i3c/master.c to drivers/i3c/device.c Export i3c_device_match_id

Changes in v2:
move this function to drivers/i3c/device.c

 drivers/i3c/device.c       | 53 ++++++++++++++++++++++++++++++++++++++++++++++
 drivers/i3c/master.c       | 45 ---------------------------------------
 include/linux/i3c/device.h |  4 ++++
 3 files changed, 57 insertions(+), 45 deletions(-)

drivers/i3c/device.c +53 -0

index 69cc040..c15f5ca 100644
@@ -201,6 +201,59 @@ struct i3c_device *dev_to_i3cdev(struct device *dev)
 EXPORT_SYMBOL_GPL(dev_to_i3cdev);
 
 /**
+ * i3c_device_match_id() - Returns the i3c_device_id entry matching @i3cdev
+ * @i3cdev: I3C device
+ * @id_table: I3C device match table
+ *
+ * Return: a pointer to an i3c_device_id object or NULL if there's no match.
+ */
+const struct i3c_device_id *
+i3c_device_match_id(struct i3c_device *i3cdev,
+		    const struct i3c_device_id *id_table)
+{
+	struct i3c_device_info devinfo;
+	const struct i3c_device_id *id;
+
+	i3c_device_get_info(i3cdev, &devinfo);
+
+	/*
+	 * The lower 32bits of the provisional ID is just filled with a random
+	 * value, try to match using DCR info.
+	 */
+	if (!I3C_PID_RND_LOWER_32BITS(devinfo.pid)) {
+		u16 manuf = I3C_PID_MANUF_ID(devinfo.pid);
+		u16 part = I3C_PID_PART_ID(devinfo.pid);
+		u16 ext_info = I3C_PID_EXTRA_INFO(devinfo.pid);
+
+		/* First try to match by manufacturer/part ID. */
+		for (id = id_table; id->match_flags != 0; id++) {
+			if ((id->match_flags & I3C_MATCH_MANUF_AND_PART) !=
+			    I3C_MATCH_MANUF_AND_PART)
+				continue;
+
+			if (manuf != id->manuf_id || part != id->part_id)
+				continue;
+
+			if ((id->match_flags & I3C_MATCH_EXTRA_INFO) &&
+			    ext_info != id->extra_info)
+				continue;
+
+			return id;
+		}
+	}
+
+	/* Fallback to DCR match. */
+	for (id = id_table; id->match_flags != 0; id++) {
+		if ((id->match_flags & I3C_MATCH_DCR) &&
+		    id->dcr == devinfo.dcr)
+			return id;
+	}
+
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(i3c_device_match_id);
+
+/**
  * i3c_driver_register_with_owner() - register an I3C device driver
  *
  * @drv: driver to register

drivers/i3c/master.c +0 ~~-45~~

51 lines not on this page · raw message

include/linux/i3c/device.h +4 -0

index 5ecb055..de102e4 100644
@@ -188,6 +188,10 @@ static inline struct i3c_driver *drv_to_i3cdrv(struct device_driver *drv)
 struct device *i3cdev_to_dev(struct i3c_device *i3cdev);
 struct i3c_device *dev_to_i3cdev(struct device *dev);
 
+const struct i3c_device_id *
+i3c_device_match_id(struct i3c_device *i3cdev,
+		    const struct i3c_device_id *id_table);
+
 static inline void i3cdev_set_drvdata(struct i3c_device *i3cdev,
 				      void *data)
 {

Signature · 1 line

2.7.4

Boris Brezillon

2019-07-19 13:45 UTC #2 lore raw

Re: [PATCH v6 1/2] i3c: move i3c_device_match_id to device.c and export it

Quoted 7 lines · On Fri, 19 Jul 2019 15:30:54 +0200 Vitor Soares <[email protected]>…

Some I3C device drivers need to know which entry matches the i3c_device object passed to the probe function
Let's move i3c_device_match_id() to device.c and export it so it can be used by drivers.
Signed-off-by Vitor Soares <[email protected]>

Looks good to me. I'll apply the patch when -rc1 is out and provide an immutable branch for iio maintainers.

Quoted 159 lines

---
Changes in v6:
Improve kerneldoc

Changes in v5:
Add kerneldoc
Improve commit message

Changes in v4:
None

Changes in v3:
Remove i3c_get_device_id
Move i3c_device_match_id from drivers/i3c/master.c to drivers/i3c/device.c Export i3c_device_match_id

Changes in v2:
move this function to drivers/i3c/device.c

 drivers/i3c/device.c       | 53 ++++++++++++++++++++++++++++++++++++++++++++++
 drivers/i3c/master.c       | 45 ---------------------------------------
 include/linux/i3c/device.h |  4 ++++
 3 files changed, 57 insertions(+), 45 deletions(-)

drivers/i3c/device.c +53 -0

index 69cc040..c15f5ca 100644
@@ -201,6 +201,59 @@ struct i3c_device *dev_to_i3cdev(struct device *dev)
 EXPORT_SYMBOL_GPL(dev_to_i3cdev);
 
 /**
+ * i3c_device_match_id() - Returns the i3c_device_id entry matching @i3cdev
+ * @i3cdev: I3C device
+ * @id_table: I3C device match table
+ *
+ * Return: a pointer to an i3c_device_id object or NULL if there's no match.
+ */
+const struct i3c_device_id *
+i3c_device_match_id(struct i3c_device *i3cdev,
+		    const struct i3c_device_id *id_table)
+{
+	struct i3c_device_info devinfo;
+	const struct i3c_device_id *id;
+
+	i3c_device_get_info(i3cdev, &devinfo);
+
+	/*
+	 * The lower 32bits of the provisional ID is just filled with a random
+	 * value, try to match using DCR info.
+	 */
+	if (!I3C_PID_RND_LOWER_32BITS(devinfo.pid)) {
+		u16 manuf = I3C_PID_MANUF_ID(devinfo.pid);
+		u16 part = I3C_PID_PART_ID(devinfo.pid);
+		u16 ext_info = I3C_PID_EXTRA_INFO(devinfo.pid);
+
+		/* First try to match by manufacturer/part ID. */
+		for (id = id_table; id->match_flags != 0; id++) {
+			if ((id->match_flags & I3C_MATCH_MANUF_AND_PART) !=
+			    I3C_MATCH_MANUF_AND_PART)
+				continue;
+
+			if (manuf != id->manuf_id || part != id->part_id)
+				continue;
+
+			if ((id->match_flags & I3C_MATCH_EXTRA_INFO) &&
+			    ext_info != id->extra_info)
+				continue;
+
+			return id;
+		}
+	}
+
+	/* Fallback to DCR match. */
+	for (id = id_table; id->match_flags != 0; id++) {
+		if ((id->match_flags & I3C_MATCH_DCR) &&
+		    id->dcr == devinfo.dcr)
+			return id;
+	}
+
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(i3c_device_match_id);
+
+/**
  * i3c_driver_register_with_owner() - register an I3C device driver
  *
  * @drv: driver to register

drivers/i3c/master.c +0 ~~-45~~

index 5f4bd52..7667f84 100644
@@ -270,51 +270,6 @@ static const struct device_type i3c_device_type = {
 	.uevent = i3c_device_uevent,
 };
 
-static const struct i3c_device_id *
-i3c_device_match_id(struct i3c_device *i3cdev,
-		    const struct i3c_device_id *id_table)
-{
-	struct i3c_device_info devinfo;
-	const struct i3c_device_id *id;
-
-	i3c_device_get_info(i3cdev, &devinfo);
-
-	/*
-	 * The lower 32bits of the provisional ID is just filled with a random
-	 * value, try to match using DCR info.
-	 */
-	if (!I3C_PID_RND_LOWER_32BITS(devinfo.pid)) {
-		u16 manuf = I3C_PID_MANUF_ID(devinfo.pid);
-		u16 part = I3C_PID_PART_ID(devinfo.pid);
-		u16 ext_info = I3C_PID_EXTRA_INFO(devinfo.pid);
-
-		/* First try to match by manufacturer/part ID. */
-		for (id = id_table; id->match_flags != 0; id++) {
-			if ((id->match_flags & I3C_MATCH_MANUF_AND_PART) !=
-			    I3C_MATCH_MANUF_AND_PART)
-				continue;
-
-			if (manuf != id->manuf_id || part != id->part_id)
-				continue;
-
-			if ((id->match_flags & I3C_MATCH_EXTRA_INFO) &&
-			    ext_info != id->extra_info)
-				continue;
-
-			return id;
-		}
-	}
-
-	/* Fallback to DCR match. */
-	for (id = id_table; id->match_flags != 0; id++) {
-		if ((id->match_flags & I3C_MATCH_DCR) &&
-		    id->dcr == devinfo.dcr)
-			return id;
-	}
-
-	return NULL;
-}
-
 static int i3c_device_match(struct device *dev, struct device_driver *drv)
 {
 	struct i3c_device *i3cdev;

include/linux/i3c/device.h +4 -0

index 5ecb055..de102e4 100644
@@ -188,6 +188,10 @@ static inline struct i3c_driver *drv_to_i3cdrv(struct device_driver *drv)
 struct device *i3cdev_to_dev(struct i3c_device *i3cdev);
 struct i3c_device *dev_to_i3cdev(struct device *dev);
 
+const struct i3c_device_id *
+i3c_device_match_id(struct i3c_device *i3cdev,
+		    const struct i3c_device_id *id_table);
+
 static inline void i3cdev_set_drvdata(struct i3c_device *i3cdev,
 				      void *data)
 {

Vitor Soares

author

2019-07-19 15:42 UTC #3 lore raw

RE: [PATCH v6 1/2] i3c: move i3c_device_match_id to device.c and export it

From: Boris Brezillon <[email protected]>
Date: Fri, Jul 19, 2019 at 14:45:03

Quoted 6 lines

Quoted 3 lines · On Fri, 19 Jul 2019 15:30:54 +0200 Vitor Soares <[email protected]>…
Some I3C device drivers need to know which entry matches the i3c_device object passed to the probe function

Quoted 7 lines

Quoted 4 lines
Let's move i3c_device_match_id() to device.c and export it so it can be used by drivers.
Signed-off-by Vitor Soares <[email protected]>
Looks good to me. I'll apply the patch when -rc1 is out and provide an immutable branch for iio maintainers.

Thanks,
Vitor Soares

Jonathan Cameron

maintainer

2019-07-21 17:17 UTC #5 lore raw

Re: [PATCH v6 2/2] iio: imu: st_lsm6dsx: add i3c basic support for LSM6DSO and LSM6DSR

In reply to Vitor Soares

Quoted 9 lines · On Fri, 19 Jul 2019 15:30:55 +0200 Vitor Soares <[email protected]>…

For today the st_lsm6dsx driver support LSM6DSO and LSM6DSR sensor only in spi and i2c mode.
The LSM6DSO and LSM6DSR are also i3c capable so let's give i3c support to them.
Signed-off-by Vitor Soares <[email protected]>
Acked-by Lorenzo Bianconi <[email protected]>
Reviewed-by Boris Brezillon <[email protected]>

Great. I'll pick this up once Boris has that immutable branch available. Give me a poke if I seem to have lost it!

Thanks,

Jonathan

Quoted 124 lines

---
Changes in v6:
none

Changes in v5:
Move regmap_config declaration inside st_lsm6dsx_i3c_probe() Fix warning [-Wint-to-void-pointer-cast] when compiling in 64-bit arch

Changes in v4:
Remove hw_id variable

Changes in v3:
Remove unnecessary st_lsm6dsx_i3c_data table used to hold device name Use st_lsm6dsx_probe new form

Changes in v2:
Add support for LSM6DSR
Set pm_ops to st_lsm6dsx_pm_ops

 drivers/iio/imu/st_lsm6dsx/Kconfig          |  8 +++-
 drivers/iio/imu/st_lsm6dsx/Makefile         |  1 +
 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c | 57 +++++++++++++++++++++++++++++
 3 files changed, 65 insertions(+), 1 deletion(-)
 create mode 100644 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c

drivers/iio/imu/st_lsm6dsx/Kconfig +7 -1

index 9e59297..6b5a73c 100644
@@ -1,11 +1,12 @@
 
 config IIO_ST_LSM6DSX
 	tristate "ST_LSM6DSx driver for STM 6-axis IMU MEMS sensors"
-	depends on (I2C || SPI)
+	depends on (I2C || SPI || I3C)
 	select IIO_BUFFER
 	select IIO_KFIFO_BUF
 	select IIO_ST_LSM6DSX_I2C if (I2C)
 	select IIO_ST_LSM6DSX_SPI if (SPI_MASTER)
+	select IIO_ST_LSM6DSX_I3C if (I3C)
 	help
 	  Say yes here to build support for STMicroelectronics LSM6DSx imu
 	  sensor. Supported devices: lsm6ds3, lsm6ds3h, lsm6dsl, lsm6dsm,

@@ -23,3 +24,8 @@ config IIO_ST_LSM6DSX_SPI
 	tristate
 	depends on IIO_ST_LSM6DSX
 	select REGMAP_SPI
+
+config IIO_ST_LSM6DSX_I3C
+	tristate
+	depends on IIO_ST_LSM6DSX
+	select REGMAP_I3C

drivers/iio/imu/st_lsm6dsx/Makefile +1 -0

index e5f733c..c676965 100644
@@ -4,3 +4,4 @@ st_lsm6dsx-y := st_lsm6dsx_core.o st_lsm6dsx_buffer.o \
 obj-$(CONFIG_IIO_ST_LSM6DSX) += st_lsm6dsx.o
 obj-$(CONFIG_IIO_ST_LSM6DSX_I2C) += st_lsm6dsx_i2c.o
 obj-$(CONFIG_IIO_ST_LSM6DSX_SPI) += st_lsm6dsx_spi.o
+obj-$(CONFIG_IIO_ST_LSM6DSX_I3C) += st_lsm6dsx_i3c.o

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c new file +57 -0

new file mode 100644
index 0000000..57e6331
@@ -0,0 +1,57 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2018 Synopsys, Inc. and/or its affiliates.
+ *
+ * Author: Vitor Soares <[email protected]>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/i3c/device.h>
+#include <linux/i3c/master.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
+
+#include "st_lsm6dsx.h"
+
+static const struct i3c_device_id st_lsm6dsx_i3c_ids[] = {
+	I3C_DEVICE(0x0104, 0x006C, (void *)ST_LSM6DSO_ID),
+	I3C_DEVICE(0x0104, 0x006B, (void *)ST_LSM6DSR_ID),
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(i3c, st_lsm6dsx_i3c_ids);
+
+static int st_lsm6dsx_i3c_probe(struct i3c_device *i3cdev)
+{
+	struct regmap_config st_lsm6dsx_i3c_regmap_config = {
+		.reg_bits = 8,
+		.val_bits = 8,
+	};
+	const struct i3c_device_id *id = i3c_device_match_id(i3cdev,
+							    st_lsm6dsx_i3c_ids);
+	struct regmap *regmap;
+
+	regmap = devm_regmap_init_i3c(i3cdev, &st_lsm6dsx_i3c_regmap_config);
+	if (IS_ERR(regmap)) {
+		dev_err(&i3cdev->dev, "Failed to register i3c regmap %d\n",
+			(int)PTR_ERR(regmap));
+		return PTR_ERR(regmap);
+	}
+
+	return st_lsm6dsx_probe(&i3cdev->dev, 0, (uintptr_t)id->data, regmap);
+}
+
+static struct i3c_driver st_lsm6dsx_driver = {
+	.driver = {
+		.name = "st_lsm6dsx_i3c",
+		.pm = &st_lsm6dsx_pm_ops,
+	},
+	.probe = st_lsm6dsx_i3c_probe,
+	.id_table = st_lsm6dsx_i3c_ids,
+};
+module_i3c_driver(st_lsm6dsx_driver);
+
+MODULE_AUTHOR("Vitor Soares <[email protected]>");
+MODULE_DESCRIPTION("STMicroelectronics st_lsm6dsx i3c driver");
+MODULE_LICENSE("GPL v2");

Boris Brezillon

2019-07-27 10:42 UTC #6 lore raw

Re: [PATCH v6 2/2] iio: imu: st_lsm6dsx: add i3c basic support for LSM6DSO and LSM6DSR

Quoted 6 lines · On Sun, 21 Jul 2019 18:16:56 +0100 Jonathan Cameron <[email protected]> wrote:

Quoted 3 lines · On Fri, 19 Jul 2019 15:30:55 +0200 Vitor Soares <[email protected]>…
For today the st_lsm6dsx driver support LSM6DSO and LSM6DSR sensor only in spi and i2c mode.

Quoted 8 lines

Quoted 6 lines
The LSM6DSO and LSM6DSR are also i3c capable so let's give i3c support to them.
Signed-off-by Vitor Soares <[email protected]>
Acked-by Lorenzo Bianconi <[email protected]>
Reviewed-by Boris Brezillon <[email protected]>
Great. I'll pick this up once Boris has that immutable branch available. Give me a poke if I seem to have lost it!

Here it is:

The following changes since commit 5f9e832c137075045d15cd6899ab0505cfb2ca4b:

Linus 5.3-rc1 (2019-07-21 14:05:38 -0700)

are available in the Git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux.git tags/i3c/export-i3c_device_match_id

for you to fetch changes up to 934d24a5e1508e73c0001afb54a3916e4270428f:

i3c: move i3c_device_match_id to device.c and export it (2019-07-27 11:22:19 +0200)

----------------------------------------------------------------
Needed for the st_lsm6dsx_i3c.c driver

----------------------------------------------------------------
Vitor Soares (1):
i3c: move i3c_device_match_id to device.c and export it

 drivers/i3c/device.c       | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 drivers/i3c/master.c       | 45 ---------------------------------------------
 include/linux/i3c/device.h |  4 ++++
 3 files changed, 57 insertions(+), 45 deletions(-)

Jonathan Cameron

maintainer

2019-07-27 20:54 UTC #7 lore raw

Re: [PATCH v6 2/2] iio: imu: st_lsm6dsx: add i3c basic support for LSM6DSO and LSM6DSR

Quoted 12 lines · On Sat, 27 Jul 2019 12:42:12 +0200 Boris Brezillon…

Quoted 9 lines · On Sun, 21 Jul 2019 18:16:56 +0100 Jonathan Cameron <[email protected]> wrote:
Quoted 6 lines · On Fri, 19 Jul 2019 15:30:55 +0200 Vitor Soares <[email protected]>…
For today the st_lsm6dsx driver support LSM6DSO and LSM6DSR sensor only in spi and i2c mode.
The LSM6DSO and LSM6DSR are also i3c capable so let's give i3c support to them.

Quoted 8 lines

Quoted 5 lines
Quoted 3 lines
Signed-off-by Vitor Soares <[email protected]>
Acked-by Lorenzo Bianconi <[email protected]>
Reviewed-by Boris Brezillon <[email protected]>
Great. I'll pick this up once Boris has that immutable branch available. Give me a poke if I seem to have lost it!
Here it is:

Great. Merged that into the togreg branch of iio and applied this patch.

Pushed out as testing to let the autobuilders have a poke at it all.

Thanks,

Jonathan

Quoted 25 lines

The following changes since commit 5f9e832c137075045d15cd6899ab0505cfb2ca4b:
Linus 5.3-rc1 (2019-07-21 14:05:38 -0700)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux.git tags/i3c/export-i3c_device_match_id
for you to fetch changes up to 934d24a5e1508e73c0001afb54a3916e4270428f:
i3c: move i3c_device_match_id to device.c and export it (2019-07-27 11:22:19 +0200)
----------------------------------------------------------------
Needed for the st_lsm6dsx_i3c.c driver
----------------------------------------------------------------
Vitor Soares (1):
i3c: move i3c_device_match_id to device.c and export it
 drivers/i3c/device.c       | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 drivers/i3c/master.c       | 45 ---------------------------------------------
 include/linux/i3c/device.h |  4 ++++
 3 files changed, 57 insertions(+), 45 deletions(-)

Vitor Soares

author

2019-09-25 15:35 UTC #8 lore raw

RE: [PATCH v6 2/2] iio: imu: st_lsm6dsx: add i3c basic support for LSM6DSO and LSM6DSR

In reply to Jonathan Cameron

Hi Jonathan,

From: Jonathan Cameron <[email protected]>
Date: Sun, Jul 21, 2019 at 18:16:56

Quoted 12 lines

Quoted 9 lines · On Fri, 19 Jul 2019 15:30:55 +0200 Vitor Soares <[email protected]>…
For today the st_lsm6dsx driver support LSM6DSO and LSM6DSR sensor only in spi and i2c mode.
The LSM6DSO and LSM6DSR are also i3c capable so let's give i3c support to them.
Signed-off-by Vitor Soares <[email protected]>
Acked-by Lorenzo Bianconi <[email protected]>
Reviewed-by Boris Brezillon <[email protected]>

Quoted 6 lines

Great. I'll pick this up once Boris has that immutable branch available. Give me a poke if I seem to have lost it!
Thanks,
Jonathan

I didn't see the i3c support for st_lsm6dsx driver in pull request, could you please check it?

Best regards,
Vitor Soares

Quoted 124 lines

---
Changes in v6:
none

Changes in v5:
Move regmap_config declaration inside st_lsm6dsx_i3c_probe() Fix warning [-Wint-to-void-pointer-cast] when compiling in 64-bit arch

Changes in v4:
Remove hw_id variable

Changes in v3:
Remove unnecessary st_lsm6dsx_i3c_data table used to hold device name Use st_lsm6dsx_probe new form

Changes in v2:
Add support for LSM6DSR
Set pm_ops to st_lsm6dsx_pm_ops

 drivers/iio/imu/st_lsm6dsx/Kconfig          |  8 +++-
 drivers/iio/imu/st_lsm6dsx/Makefile         |  1 +
 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c | 57 +++++++++++++++++++++++++++++
 3 files changed, 65 insertions(+), 1 deletion(-)
 create mode 100644 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c

drivers/iio/imu/st_lsm6dsx/Kconfig +7 -1

index 9e59297..6b5a73c 100644
@@ -1,11 +1,12 @@
 
 config IIO_ST_LSM6DSX
 	tristate "ST_LSM6DSx driver for STM 6-axis IMU MEMS sensors"
-	depends on (I2C || SPI)
+	depends on (I2C || SPI || I3C)
 	select IIO_BUFFER
 	select IIO_KFIFO_BUF
 	select IIO_ST_LSM6DSX_I2C if (I2C)
 	select IIO_ST_LSM6DSX_SPI if (SPI_MASTER)
+	select IIO_ST_LSM6DSX_I3C if (I3C)
 	help
 	  Say yes here to build support for STMicroelectronics LSM6DSx imu
 	  sensor. Supported devices: lsm6ds3, lsm6ds3h, lsm6dsl, lsm6dsm,

@@ -23,3 +24,8 @@ config IIO_ST_LSM6DSX_SPI
 	tristate
 	depends on IIO_ST_LSM6DSX
 	select REGMAP_SPI
+
+config IIO_ST_LSM6DSX_I3C
+	tristate
+	depends on IIO_ST_LSM6DSX
+	select REGMAP_I3C

drivers/iio/imu/st_lsm6dsx/Makefile +1 -0

index e5f733c..c676965 100644
@@ -4,3 +4,4 @@ st_lsm6dsx-y := st_lsm6dsx_core.o st_lsm6dsx_buffer.o \
 obj-$(CONFIG_IIO_ST_LSM6DSX) += st_lsm6dsx.o
 obj-$(CONFIG_IIO_ST_LSM6DSX_I2C) += st_lsm6dsx_i2c.o
 obj-$(CONFIG_IIO_ST_LSM6DSX_SPI) += st_lsm6dsx_spi.o
+obj-$(CONFIG_IIO_ST_LSM6DSX_I3C) += st_lsm6dsx_i3c.o

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c new file +57 -0

new file mode 100644
index 0000000..57e6331
@@ -0,0 +1,57 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2018 Synopsys, Inc. and/or its affiliates.
+ *
+ * Author: Vitor Soares <[email protected]>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/i3c/device.h>
+#include <linux/i3c/master.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
+
+#include "st_lsm6dsx.h"
+
+static const struct i3c_device_id st_lsm6dsx_i3c_ids[] = {
+	I3C_DEVICE(0x0104, 0x006C, (void *)ST_LSM6DSO_ID),
+	I3C_DEVICE(0x0104, 0x006B, (void *)ST_LSM6DSR_ID),
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(i3c, st_lsm6dsx_i3c_ids);
+
+static int st_lsm6dsx_i3c_probe(struct i3c_device *i3cdev)
+{
+	struct regmap_config st_lsm6dsx_i3c_regmap_config = {
+		.reg_bits = 8,
+		.val_bits = 8,
+	};
+	const struct i3c_device_id *id = i3c_device_match_id(i3cdev,
+							    st_lsm6dsx_i3c_ids);
+	struct regmap *regmap;
+
+	regmap = devm_regmap_init_i3c(i3cdev, &st_lsm6dsx_i3c_regmap_config);
+	if (IS_ERR(regmap)) {
+		dev_err(&i3cdev->dev, "Failed to register i3c regmap %d\n",
+			(int)PTR_ERR(regmap));
+		return PTR_ERR(regmap);
+	}
+
+	return st_lsm6dsx_probe(&i3cdev->dev, 0, (uintptr_t)id->data, regmap);
+}
+
+static struct i3c_driver st_lsm6dsx_driver = {
+	.driver = {
+		.name = "st_lsm6dsx_i3c",
+		.pm = &st_lsm6dsx_pm_ops,
+	},
+	.probe = st_lsm6dsx_i3c_probe,
+	.id_table = st_lsm6dsx_i3c_ids,
+};
+module_i3c_driver(st_lsm6dsx_driver);
+
+MODULE_AUTHOR("Vitor Soares <[email protected]>");
+MODULE_DESCRIPTION("STMicroelectronics st_lsm6dsx i3c driver");
+MODULE_LICENSE("GPL v2");

Jonathan Cameron

2019-10-03 11:49 UTC #9 lore raw

Re: [PATCH v6 2/2] iio: imu: st_lsm6dsx: add i3c basic support for LSM6DSO and LSM6DSR

Quoted 20 lines · On Wed, 25 Sep 2019 15:35:10 +0000 Vitor Soares <[email protected]>…

Hi Jonathan,
From: Jonathan Cameron <[email protected]>
Date: Sun, Jul 21, 2019 at 18:16:56
Quoted 15 lines
Quoted 9 lines · On Fri, 19 Jul 2019 15:30:55 +0200 Vitor Soares <[email protected]>…
For today the st_lsm6dsx driver support LSM6DSO and LSM6DSR sensor only in spi and i2c mode.
The LSM6DSO and LSM6DSR are also i3c capable so let's give i3c support to them.
Signed-off-by Vitor Soares <[email protected]>
Acked-by Lorenzo Bianconi <[email protected]>
Reviewed-by Boris Brezillon <[email protected]>
Great. I'll pick this up once Boris has that immutable branch available. Give me a poke if I seem to have lost it!

Quoted 6 lines

Quoted 3 lines
Thanks,
Jonathan
I didn't see the i3c support for st_lsm6dsx driver in pull request, could you please check it?

Seems to have made it

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c?h=v5.4-rc1

I checked back. Was in the first pull request back on the 12th of August.

Jonathan

Quoted 130 lines

Best regards,
Vitor Soares

Quoted 124 lines

---
Changes in v6:
none

Changes in v5:
Move regmap_config declaration inside st_lsm6dsx_i3c_probe() Fix warning [-Wint-to-void-pointer-cast] when compiling in 64-bit arch

Changes in v4:
Remove hw_id variable

Changes in v3:
Remove unnecessary st_lsm6dsx_i3c_data table used to hold device name Use st_lsm6dsx_probe new form

Changes in v2:
Add support for LSM6DSR
Set pm_ops to st_lsm6dsx_pm_ops

 drivers/iio/imu/st_lsm6dsx/Kconfig          |  8 +++-
 drivers/iio/imu/st_lsm6dsx/Makefile         |  1 +
 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c | 57 +++++++++++++++++++++++++++++
 3 files changed, 65 insertions(+), 1 deletion(-)
 create mode 100644 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c

drivers/iio/imu/st_lsm6dsx/Kconfig +7 -1

index 9e59297..6b5a73c 100644
@@ -1,11 +1,12 @@
 
 config IIO_ST_LSM6DSX
 	tristate "ST_LSM6DSx driver for STM 6-axis IMU MEMS sensors"
-	depends on (I2C || SPI)
+	depends on (I2C || SPI || I3C)
 	select IIO_BUFFER
 	select IIO_KFIFO_BUF
 	select IIO_ST_LSM6DSX_I2C if (I2C)
 	select IIO_ST_LSM6DSX_SPI if (SPI_MASTER)
+	select IIO_ST_LSM6DSX_I3C if (I3C)
 	help
 	  Say yes here to build support for STMicroelectronics LSM6DSx imu
 	  sensor. Supported devices: lsm6ds3, lsm6ds3h, lsm6dsl, lsm6dsm,

@@ -23,3 +24,8 @@ config IIO_ST_LSM6DSX_SPI
 	tristate
 	depends on IIO_ST_LSM6DSX
 	select REGMAP_SPI
+
+config IIO_ST_LSM6DSX_I3C
+	tristate
+	depends on IIO_ST_LSM6DSX
+	select REGMAP_I3C

drivers/iio/imu/st_lsm6dsx/Makefile +1 -0

index e5f733c..c676965 100644
@@ -4,3 +4,4 @@ st_lsm6dsx-y := st_lsm6dsx_core.o st_lsm6dsx_buffer.o \
 obj-$(CONFIG_IIO_ST_LSM6DSX) += st_lsm6dsx.o
 obj-$(CONFIG_IIO_ST_LSM6DSX_I2C) += st_lsm6dsx_i2c.o
 obj-$(CONFIG_IIO_ST_LSM6DSX_SPI) += st_lsm6dsx_spi.o
+obj-$(CONFIG_IIO_ST_LSM6DSX_I3C) += st_lsm6dsx_i3c.o

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c new file +57 -0

new file mode 100644
index 0000000..57e6331
@@ -0,0 +1,57 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2018 Synopsys, Inc. and/or its affiliates.
+ *
+ * Author: Vitor Soares <[email protected]>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/i3c/device.h>
+#include <linux/i3c/master.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
+
+#include "st_lsm6dsx.h"
+
+static const struct i3c_device_id st_lsm6dsx_i3c_ids[] = {
+	I3C_DEVICE(0x0104, 0x006C, (void *)ST_LSM6DSO_ID),
+	I3C_DEVICE(0x0104, 0x006B, (void *)ST_LSM6DSR_ID),
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(i3c, st_lsm6dsx_i3c_ids);
+
+static int st_lsm6dsx_i3c_probe(struct i3c_device *i3cdev)
+{
+	struct regmap_config st_lsm6dsx_i3c_regmap_config = {
+		.reg_bits = 8,
+		.val_bits = 8,
+	};
+	const struct i3c_device_id *id = i3c_device_match_id(i3cdev,
+							    st_lsm6dsx_i3c_ids);
+	struct regmap *regmap;
+
+	regmap = devm_regmap_init_i3c(i3cdev, &st_lsm6dsx_i3c_regmap_config);
+	if (IS_ERR(regmap)) {
+		dev_err(&i3cdev->dev, "Failed to register i3c regmap %d\n",
+			(int)PTR_ERR(regmap));
+		return PTR_ERR(regmap);
+	}
+
+	return st_lsm6dsx_probe(&i3cdev->dev, 0, (uintptr_t)id->data, regmap);
+}
+
+static struct i3c_driver st_lsm6dsx_driver = {
+	.driver = {
+		.name = "st_lsm6dsx_i3c",
+		.pm = &st_lsm6dsx_pm_ops,
+	},
+	.probe = st_lsm6dsx_i3c_probe,
+	.id_table = st_lsm6dsx_i3c_ids,
+};
+module_i3c_driver(st_lsm6dsx_driver);
+
+MODULE_AUTHOR("Vitor Soares <[email protected]>");
+MODULE_DESCRIPTION("STMicroelectronics st_lsm6dsx i3c driver");
+MODULE_LICENSE("GPL v2");

Vitor Soares

author

2019-10-03 17:38 UTC #10 lore raw

RE: [PATCH v6 2/2] iio: imu: st_lsm6dsx: add i3c basic support for LSM6DSO and LSM6DSR

Hi Jonathan,

From: Jonathan Cameron <[email protected]>
Date: Thu, Oct 03,
2019 at 12:49:02

Quoted 29 lines

Quoted 20 lines · On Wed, 25 Sep 2019 15:35:10 +0000 Vitor Soares <[email protected]>…
Hi Jonathan,
From: Jonathan Cameron <[email protected]>
Date: Sun, Jul 21, 2019 at 18:16:56
Quoted 15 lines
Quoted 9 lines · On Fri, 19 Jul 2019 15:30:55 +0200 Vitor Soares <[email protected]>…
For today the st_lsm6dsx driver support LSM6DSO and LSM6DSR sensor only in spi and i2c mode.
The LSM6DSO and LSM6DSR are also i3c capable so let's give i3c support to them.
Signed-off-by Vitor Soares <[email protected]>
Acked-by Lorenzo Bianconi <[email protected]>
Reviewed-by Boris Brezillon <[email protected]>
Great. I'll pick this up once Boris has that immutable branch available. Give me a poke if I seem to have lost it!
Quoted 6 lines
Quoted 3 lines
Thanks,
Jonathan
I didn't see the i3c support for st_lsm6dsx driver in pull request, could you please check it?

Quoted 7 lines

Seems to have made it
https://urldefense.proofpoint.com/v2/url?u=https-3A__git.kernel.org_pub_scm_linux_kernel_git_torvalds_linux.git_tree_drivers_iio_imu_st-5Flsm6dsx_st-5Flsm6dsx-5Fi3c.c-3Fh-3Dv5.4-2Drc1&d=DwICAg&c=DPL6_X_6JkXFx7AXWqB0tg&r=qVuU64u9x77Y0Kd0PhDK_lpxFgg6PK9PateHwjb_DY0&m=RaUb9HXBdF5dxPWn5sdO7gqqaQzqY7UFd8Rcv0ioTx0&s=-Xs5gaN2wau8fXfg5hryTStGMVD8WFA66mX0hCMsmXg&e=
I checked back. Was in the first pull request back on the 12th of August.
Jonathan

I confirm that is there. I'm already using it.
Thanks a lot.

Best regards,
Vitor Soares