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Subject: media: v4l2-core: move spi helpers out of v4l2-common.c
Author: Ezequiel Garcia <ezequ...@collabora.com>
Date: Thu Aug 15 13:48:02 2019 -0300
Separate the spi helpers to v4l2-spi.c, in order to get rid
of the ifdefery. No functional changes intended, this is
just a cosmetic change to organize the code better.
Signed-off-by: Ezequiel Garcia <ezequ...@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+sams...@kernel.org>
drivers/media/v4l2-core/Makefile | 1 +
drivers/media/v4l2-core/v4l2-common.c | 65 -----------------------------------
drivers/media/v4l2-core/v4l2-spi.c | 65 +++++++++++++++++++++++++++++++++++
include/media/v4l2-common.h | 18 ++++++++--
4 files changed, 82 insertions(+), 67 deletions(-)
---
diff --git a/drivers/media/v4l2-core/Makefile b/drivers/media/v4l2-core/Makefile
index 8e2f52f7800b..2deeeac6ee76 100644
--- a/drivers/media/v4l2-core/Makefile
+++ b/drivers/media/v4l2-core/Makefile
@@ -11,6 +11,7 @@ videodev-objs := v4l2-dev.o v4l2-ioctl.o v4l2-device.o
v4l2-fh.o \
videodev-$(CONFIG_COMPAT) += v4l2-compat-ioctl32.o
videodev-$(CONFIG_TRACEPOINTS) += v4l2-trace.o
videodev-$(CONFIG_MEDIA_CONTROLLER) += v4l2-mc.o
+videodev-$(CONFIG_SPI) += v4l2-spi.o
obj-$(CONFIG_V4L2_FWNODE) += v4l2-fwnode.o
obj-$(CONFIG_VIDEO_V4L2) += videodev.o
diff --git a/drivers/media/v4l2-core/v4l2-common.c
b/drivers/media/v4l2-core/v4l2-common.c
index 5cbb51864fbb..8ffa758d9342 100644
--- a/drivers/media/v4l2-core/v4l2-common.c
+++ b/drivers/media/v4l2-core/v4l2-common.c
@@ -41,9 +41,6 @@
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/i2c.h>
-#if defined(CONFIG_SPI)
-#include <linux/spi/spi.h>
-#endif
#include <linux/uaccess.h>
#include <asm/pgtable.h>
#include <asm/io.h>
@@ -235,68 +232,6 @@ EXPORT_SYMBOL_GPL(v4l2_i2c_tuner_addrs);
#endif /* defined(CONFIG_I2C) */
-#if defined(CONFIG_SPI)
-
-/* Load an spi sub-device. */
-
-void v4l2_spi_subdev_init(struct v4l2_subdev *sd, struct spi_device *spi,
- const struct v4l2_subdev_ops *ops)
-{
- v4l2_subdev_init(sd, ops);
- sd->flags |= V4L2_SUBDEV_FL_IS_SPI;
- /* the owner is the same as the spi_device's driver owner */
- sd->owner = spi->dev.driver->owner;
- sd->dev = &spi->dev;
- /* spi_device and v4l2_subdev point to one another */
- v4l2_set_subdevdata(sd, spi);
- spi_set_drvdata(spi, sd);
- /* initialize name */
- snprintf(sd->name, sizeof(sd->name), "%s %s",
- spi->dev.driver->name, dev_name(&spi->dev));
-}
-EXPORT_SYMBOL_GPL(v4l2_spi_subdev_init);
-
-struct v4l2_subdev *v4l2_spi_new_subdev(struct v4l2_device *v4l2_dev,
- struct spi_master *master, struct spi_board_info *info)
-{
- struct v4l2_subdev *sd = NULL;
- struct spi_device *spi = NULL;
-
- BUG_ON(!v4l2_dev);
-
- if (info->modalias[0])
- request_module(info->modalias);
-
- spi = spi_new_device(master, info);
-
- if (spi == NULL || spi->dev.driver == NULL)
- goto error;
-
- if (!try_module_get(spi->dev.driver->owner))
- goto error;
-
- sd = spi_get_drvdata(spi);
-
- /* Register with the v4l2_device which increases the module's
- use count as well. */
- if (v4l2_device_register_subdev(v4l2_dev, sd))
- sd = NULL;
-
- /* Decrease the module use count to match the first try_module_get. */
- module_put(spi->dev.driver->owner);
-
-error:
- /* If we have a client but no subdev, then something went wrong and
- we must unregister the client. */
- if (!sd)
- spi_unregister_device(spi);
-
- return sd;
-}
-EXPORT_SYMBOL_GPL(v4l2_spi_new_subdev);
-
-#endif /* defined(CONFIG_SPI) */
-
/* Clamp x to be between min and max, aligned to a multiple of 2^align. min
* and max don't have to be aligned, but there must be at least one valid
* value. E.g., min=17,max=31,align=4 is not allowed as there are no multiples
diff --git a/drivers/media/v4l2-core/v4l2-spi.c
b/drivers/media/v4l2-core/v4l2-spi.c
new file mode 100644
index 000000000000..ab5a7eb4205d
--- /dev/null
+++ b/drivers/media/v4l2-core/v4l2-spi.c
@@ -0,0 +1,65 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * v4l2-spi - SPI helpers for Video4Linux2
+ */
+
+#include <linux/module.h>
+#include <linux/spi/spi.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-device.h>
+
+void v4l2_spi_subdev_init(struct v4l2_subdev *sd, struct spi_device *spi,
+ const struct v4l2_subdev_ops *ops)
+{
+ v4l2_subdev_init(sd, ops);
+ sd->flags |= V4L2_SUBDEV_FL_IS_SPI;
+ /* the owner is the same as the spi_device's driver owner */
+ sd->owner = spi->dev.driver->owner;
+ sd->dev = &spi->dev;
+ /* spi_device and v4l2_subdev point to one another */
+ v4l2_set_subdevdata(sd, spi);
+ spi_set_drvdata(spi, sd);
+ /* initialize name */
+ snprintf(sd->name, sizeof(sd->name), "%s %s",
+ spi->dev.driver->name, dev_name(&spi->dev));
+}
+EXPORT_SYMBOL_GPL(v4l2_spi_subdev_init);
+
+struct v4l2_subdev *v4l2_spi_new_subdev(struct v4l2_device *v4l2_dev,
+ struct spi_master *master, struct spi_board_info *info)
+{
+ struct v4l2_subdev *sd = NULL;
+ struct spi_device *spi = NULL;
+
+ BUG_ON(!v4l2_dev);
+
+ if (info->modalias[0])
+ request_module(info->modalias);
+
+ spi = spi_new_device(master, info);
+
+ if (spi == NULL || spi->dev.driver == NULL)
+ goto error;
+
+ if (!try_module_get(spi->dev.driver->owner))
+ goto error;
+
+ sd = spi_get_drvdata(spi);
+
+ /* Register with the v4l2_device which increases the module's
+ use count as well. */
+ if (v4l2_device_register_subdev(v4l2_dev, sd))
+ sd = NULL;
+
+ /* Decrease the module use count to match the first try_module_get. */
+ module_put(spi->dev.driver->owner);
+
+error:
+ /* If we have a client but no subdev, then something went wrong and
+ we must unregister the client. */
+ if (!sd)
+ spi_unregister_device(spi);
+
+ return sd;
+}
+EXPORT_SYMBOL_GPL(v4l2_spi_new_subdev);
diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h
index 6b319d0d73ad..a1c5288caa6a 100644
--- a/include/media/v4l2-common.h
+++ b/include/media/v4l2-common.h
@@ -216,11 +216,10 @@ const unsigned short *v4l2_i2c_tuner_addrs(enum
v4l2_i2c_tuner_type type);
/* ------------------------------------------------------------------------- */
/* SPI Helper functions */
-#if defined(CONFIG_SPI)
#include <linux/spi/spi.h>
-struct spi_device;
+#if defined(CONFIG_SPI)
/**
* v4l2_spi_new_subdev - Load an spi module and return an initialized
@@ -246,6 +245,21 @@ struct v4l2_subdev *v4l2_spi_new_subdev(struct v4l2_device
*v4l2_dev,
*/
void v4l2_spi_subdev_init(struct v4l2_subdev *sd, struct spi_device *spi,
const struct v4l2_subdev_ops *ops);
+
+#else
+
+static inline struct v4l2_subdev *
+v4l2_spi_new_subdev(struct v4l2_device *v4l2_dev,
+ struct spi_master *master, struct spi_board_info *info)
+{
+ return NULL;
+}
+
+static inline void
+v4l2_spi_subdev_init(struct v4l2_subdev *sd, struct spi_device *spi,
+ const struct v4l2_subdev_ops *ops)
+{}
+
#endif
/* ------------------------------------------------------------------------- */
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