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authorMauro Carvalho Chehab <mchehab@s-opensource.com>2016-11-16 13:35:08 +0300
committerMauro Carvalho Chehab <mchehab@s-opensource.com>2016-11-18 15:04:58 +0300
commita41231d52ff755597d67ce83bb36e16c47dfec91 (patch)
tree260275d0ad83390d1fd76972273d9e7c70842346 /include/media/v4l2-common.h
parent680d87c0a9e3aa4a13ac54aa968173c8623c0f47 (diff)
downloadlinux-a41231d52ff755597d67ce83bb36e16c47dfec91.tar.xz
[media] v4l2-common: add a debug macro to be used with dev_foo()
Currently, there's a mess at the V4L2 printk macros: some drivers use their own macros, others use pr_foo() or v4l_foo() macros, while more modern drivers use dev_foo() macros. The best is to get rid of v4l_foo() macros, as they can be replaced by either dev_foo() or pr_foo(). Yet, such change can be disruptive, as dev_foo() cannot use KERN_CONT. So, the best is to do such change driver by driver. There are replacements for most v4l_foo() macros, but it lacks a way to enable debug messages per level. So, add such macro, in order to make the conversion easier. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'include/media/v4l2-common.h')
-rw-r--r--include/media/v4l2-common.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h
index 350cbf9fb10e..aac8b7b6e691 100644
--- a/include/media/v4l2-common.h
+++ b/include/media/v4l2-common.h
@@ -55,6 +55,13 @@
v4l_client_printk(KERN_DEBUG, client, fmt , ## arg); \
} while (0)
+/* Add a version of v4l_dbg to be used on drivers using dev_foo() macros */
+#define dev_dbg_lvl(__dev, __level, __debug, __fmt, __arg...) \
+ do { \
+ if (__debug >= (__level)) \
+ dev_printk(KERN_DEBUG, __dev, __fmt, ##__arg); \
+ } while (0)
+
/* ------------------------------------------------------------------------- */
/* These printk constructs can be used with v4l2_device and v4l2_subdev */