drivers/gpu/drm/radeon/radeon_pm.c

   1 /*
   2  * Permission is hereby granted, free of charge, to any person obtaining a
   3  * copy of this software and associated documentation files (the "Software"),
   4  * to deal in the Software without restriction, including without limitation
   5  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   6  * and/or sell copies of the Software, and to permit persons to whom the
   7  * Software is furnished to do so, subject to the following conditions:
   8  *
   9  * The above copyright notice and this permission notice shall be included in
  10  * all copies or substantial portions of the Software.
  11  *
  12  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  13  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  14  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  15  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  16  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  17  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  18  * OTHER DEALINGS IN THE SOFTWARE.
  19  *
  20  * Authors: Rafał Miłecki <zajec5@gmail.com>
  21  */
  22 #include "drmP.h"
  23 #include "radeon.h"
  24
  25 int radeon_debugfs_pm_init(struct radeon_device *rdev);
  26
  27 int radeon_pm_init(struct radeon_device *rdev)
  28 {
  29         if (radeon_debugfs_pm_init(rdev)) {
  30                 DRM_ERROR("Failed to register debugfs file for PM!\n");
  31         }
  32
  33         return 0;
  34 }
  35
  36 /*
  37  * Debugfs info
  38  */
  39 #if defined(CONFIG_DEBUG_FS)
  40
  41 static int radeon_debugfs_pm_info(struct seq_file *m, void *data)
  42 {
  43         struct drm_info_node *node = (struct drm_info_node *) m->private;
  44         struct drm_device *dev = node->minor->dev;
  45         struct radeon_device *rdev = dev->dev_private;
  46
  47         seq_printf(m, "engine clock: %u0 kHz\n", radeon_get_engine_clock(rdev));
  48         seq_printf(m, "memory clock: %u0 kHz\n", radeon_get_memory_clock(rdev));
  49
  50         return 0;
  51 }
  52
  53 static struct drm_info_list radeon_pm_info_list[] = {
  54         {"radeon_pm_info", radeon_debugfs_pm_info, 0, NULL},
  55 };
  56 #endif
  57
  58 int radeon_debugfs_pm_init(struct radeon_device *rdev)
  59 {
  60 #if defined(CONFIG_DEBUG_FS)
  61         return radeon_debugfs_add_files(rdev, radeon_pm_info_list, ARRAY_SIZE(radeon_pm_info_list));
  62 #else
  63         return 0;
  64 #endif
  65 }