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 #define DEBUG /* for pr_debug() */ 27 28 #include <stdarg.h> 29 #include <linux/seq_file.h> 30 #include <drm/drmP.h> 31 #include <drm/drm_print.h> 32 33 void __drm_printfn_seq_file(struct drm_printer *p, struct va_format *vaf) 34 { 35 seq_printf(p->arg, "%pV", vaf); 36 } 37 EXPORT_SYMBOL(__drm_printfn_seq_file); 38 39 void __drm_printfn_info(struct drm_printer *p, struct va_format *vaf) 40 { 41 dev_info(p->arg, "[" DRM_NAME "] %pV", vaf); 42 } 43 EXPORT_SYMBOL(__drm_printfn_info); 44 45 void __drm_printfn_debug(struct drm_printer *p, struct va_format *vaf) 46 { 47 pr_debug("%s %pV", p->prefix, vaf); 48 } 49 EXPORT_SYMBOL(__drm_printfn_debug); 50 51 /** 52 * drm_printf - print to a &drm_printer stream 53 * @p: the &drm_printer 54 * @f: format string 55 */ 56 void drm_printf(struct drm_printer *p, const char *f, ...) 57 { 58 va_list args; 59 60 va_start(args, f); 61 drm_vprintf(p, f, &args); 62 va_end(args); 63 } 64 EXPORT_SYMBOL(drm_printf); 65 66 #define DRM_PRINTK_FMT "[" DRM_NAME ":%s]%s %pV" 67 68 void drm_dev_printk(const struct device *dev, const char *level, 69 unsigned int category, const char *function_name, 70 const char *prefix, const char *format, ...) 71 { 72 struct va_format vaf; 73 va_list args; 74 75 if (category != DRM_UT_NONE && !(drm_debug & category)) 76 return; 77 78 va_start(args, format); 79 vaf.fmt = format; 80 vaf.va = &args; 81 82 if (dev) 83 dev_printk(level, dev, DRM_PRINTK_FMT, function_name, prefix, 84 &vaf); 85 else 86 printk("%s" DRM_PRINTK_FMT, level, function_name, prefix, &vaf); 87 88 va_end(args); 89 } 90 EXPORT_SYMBOL(drm_dev_printk); 91 92 void drm_printk(const char *level, unsigned int category, 93 const char *format, ...) 94 { 95 struct va_format vaf; 96 va_list args; 97 98 if (category != DRM_UT_NONE && !(drm_debug & category)) 99 return; 100 101 va_start(args, format); 102 vaf.fmt = format; 103 vaf.va = &args; 104 105 printk("%s" "[" DRM_NAME ":%ps]%s %pV", 106 level, __builtin_return_address(0), 107 strcmp(level, KERN_ERR) == 0 ? " *ERROR*" : "", &vaf); 108 109 va_end(args); 110 } 111 EXPORT_SYMBOL(drm_printk); 112