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authorRob Clark <robdclark@gmail.com>2016-11-05 16:08:07 +0100
committerSean Paul <seanpaul@chromium.org>2016-11-08 22:38:03 +0100
commitd8187177b0b195368699ba12b5fa8cd5fdc39b79 (patch)
tree88456b43e3f3dfc4af5c6940eb44469d7032982c /drivers/gpu/drm/drm_print.c
parentdrm: helper macros to print composite types (diff)
downloadlinux-d8187177b0b195368699ba12b5fa8cd5fdc39b79.tar.xz
linux-d8187177b0b195368699ba12b5fa8cd5fdc39b79.zip
drm: add helper for printing to log or seq_file
Sometimes it is nice not to duplicate equivalent printk() and seq_printf() code. v2: simplify things w/ va_format, and use dev_printk, docs Signed-off-by: Rob Clark <robdclark@gmail.com> Signed-off-by: Sean Paul <seanpaul@chromium.org> Link: http://patchwork.freedesktop.org/patch/msgid/1478358492-30738-3-git-send-email-robdclark@gmail.com
Diffstat (limited to 'drivers/gpu/drm/drm_print.c')
-rw-r--r--drivers/gpu/drm/drm_print.c54
1 files changed, 54 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_print.c b/drivers/gpu/drm/drm_print.c
new file mode 100644
index 000000000000..34eb85618b76
--- /dev/null
+++ b/drivers/gpu/drm/drm_print.c
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2016 Red Hat
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ * Rob Clark <robdclark@gmail.com>
+ */
+
+#include <stdarg.h>
+#include <linux/seq_file.h>
+#include <drm/drmP.h>
+#include <drm/drm_print.h>
+
+void __drm_printfn_seq_file(struct drm_printer *p, struct va_format *vaf)
+{
+ seq_printf(p->arg, "%pV", vaf);
+}
+EXPORT_SYMBOL(__drm_printfn_seq_file);
+
+void __drm_printfn_info(struct drm_printer *p, struct va_format *vaf)
+{
+ dev_printk(KERN_INFO, p->arg, "[" DRM_NAME "] %pV", vaf);
+}
+EXPORT_SYMBOL(__drm_printfn_info);
+
+void drm_printf(struct drm_printer *p, const char *f, ...)
+{
+ struct va_format vaf;
+ va_list args;
+
+ va_start(args, f);
+ vaf.fmt = f;
+ vaf.va = &args;
+ p->printfn(p, &vaf);
+ va_end(args);
+}
+EXPORT_SYMBOL(drm_printf);