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drm/i915/debugfs: New debugfs for display clock frequencies

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Instead of mixing display & non-display stuff together, move
display specific clock info to new debugfs. This patch will
create a new debugfs "i915_cdclk_info" to expose Current & Max
cdclk and Max pixel clock frequency info.

Example:
$ cat /sys/kernel/debug/dri/0/i915_cdclk_info
Current CD clock frequency: 163200 kHz
Max CD clock frequency: 652800 kHz
Max pixel clock frequency: 1305600 kHz

V2: - s/i915_display_clock_info/i915_cdclk_info/ (Jani)
    - Move the logic to intel_cdclk.c (Jani)
    - Don't remove info from i915_frequency_info (Jani)
V3: - Drop locking (Jani)

Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Bhanuprakash Modem <bhanuprakash.modem@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230413114502.1105288-1-bhanuprakash.modem@intel.com
This commit is contained in:
Bhanuprakash Modem
2023-04-13 17:15:02 +05:30
committed by Jani Nikula
parent e13b3f65af
commit d7c281eece
3 changed files with 23 additions and 0 deletions
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21
drivers/gpu/drm/i915/display/intel_cdclk.c
View File

@@ -3235,6 +3235,27 @@ u32 intel_read_rawclk(struct drm_i915_private *dev_priv)
return freq;
}
static int i915_cdclk_info_show(struct seq_file *m, void *unused)
{
struct drm_i915_private *i915 = m->private;
seq_printf(m, "Current CD clock frequency: %d kHz\n", i915->display.cdclk.hw.cdclk);
seq_printf(m, "Max CD clock frequency: %d kHz\n", i915->display.cdclk.max_cdclk_freq);
seq_printf(m, "Max pixel clock frequency: %d kHz\n", i915->max_dotclk_freq);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(i915_cdclk_info);
void intel_cdclk_debugfs_register(struct drm_i915_private *i915)
{
struct drm_minor *minor = i915->drm.primary;
debugfs_create_file("i915_cdclk_info", 0444, minor->debugfs_root,
i915, &i915_cdclk_info_fops);
}
static const struct intel_cdclk_funcs mtl_cdclk_funcs = {
.get_cdclk = bxt_get_cdclk,
.set_cdclk = bxt_set_cdclk,

1
drivers/gpu/drm/i915/display/intel_cdclk.h
View File

@@ -82,5 +82,6 @@ intel_atomic_get_cdclk_state(struct intel_atomic_state *state);
to_intel_cdclk_state(intel_atomic_get_new_global_obj_state(state, &to_i915(state->base.dev)->display.cdclk.obj))
int intel_cdclk_init(struct drm_i915_private *dev_priv);
void intel_cdclk_debugfs_register(struct drm_i915_private *i915);
#endif /* __INTEL_CDCLK_H__ */

1
drivers/gpu/drm/i915/display/intel_display_debugfs.c
View File

@@ -1094,6 +1094,7 @@ void intel_display_debugfs_register(struct drm_i915_private *i915)
ARRAY_SIZE(intel_display_debugfs_list),
minor->debugfs_root, minor);
intel_cdclk_debugfs_register(i915);
intel_dmc_debugfs_register(i915);
intel_fbc_debugfs_register(i915);
intel_hpd_debugfs_register(i915);