drivers/gpu/drm/drm_print.c

   1 /*
   2  * Copyright (C) 2016 Red Hat
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors:
  23  * Rob Clark <robdclark@gmail.com>
  24  */
  25
  26 #include <stdarg.h>
  27 #include <linux/seq_file.h>
  28 #include <drm/drmP.h>
  29 #include <drm/drm_print.h>
  30
  31 void __drm_printfn_seq_file(struct drm_printer *p, struct va_format *vaf)
  32 {
  33         seq_printf(p->arg, "%pV", vaf);
  34 }
  35 EXPORT_SYMBOL(__drm_printfn_seq_file);
  36
  37 void __drm_printfn_info(struct drm_printer *p, struct va_format *vaf)
  38 {
  39         dev_info(p->arg, "[" DRM_NAME "] %pV", vaf);
  40 }
  41 EXPORT_SYMBOL(__drm_printfn_info);
  42
  43 void __drm_printfn_debug(struct drm_printer *p, struct va_format *vaf)
  44 {
  45         pr_debug("%s %pV", p->prefix, vaf);
  46 }
  47 EXPORT_SYMBOL(__drm_printfn_debug);
  48
  49 /**
  50  * drm_printf - print to a &drm_printer stream
  51  * @p: the &drm_printer
  52  * @f: format string
  53  */
  54 void drm_printf(struct drm_printer *p, const char *f, ...)
  55 {
  56         struct va_format vaf;
  57         va_list args;
  58
  59         va_start(args, f);
  60         vaf.fmt = f;
  61         vaf.va = &args;
  62         p->printfn(p, &vaf);
  63         va_end(args);
  64 }
  65 EXPORT_SYMBOL(drm_printf);