diff options
| author | Imre Deak <imre.deak@intel.com> | 2026-06-16 23:08:35 +0300 |
|---|---|---|
| committer | Imre Deak <imre.deak@intel.com> | 2026-06-24 19:44:03 +0300 |
| commit | 96d07a10cfdcbb5327e18121079d4d7bb8553490 (patch) | |
| tree | 3a4395070c074cb8e51da7f313dee3b487b9aaab | |
| parent | 7aa14e73519d89bd0933df418a488d9d7452c3a1 (diff) | |
drm/i915/dp_link_caps: Add helper to print all supported link rates
Add intel_dp_link_caps_print_rates() to print all the supported link
rates tracked by the link_caps module. This prepares for tracking
these capabilities internally within the link caps module.
Suggested-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Nemesa Garg <nemesa.garg@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patch.msgid.link/20260616200849.3534628-16-imre.deak@intel.com
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_dp.c | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_dp_link_caps.c | 14 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_dp_link_caps.h | 2 |
3 files changed, 17 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index e2d83f0fcf91..11e03ee9d639 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -1543,9 +1543,7 @@ static void intel_dp_print_rates(struct intel_dp *intel_dp) seq_buf_print_array(&s, intel_dp->sink_rates, intel_dp->num_sink_rates); drm_dbg_kms(display->drm, "sink rates: %s\n", seq_buf_str(&s)); - seq_buf_clear(&s); - seq_buf_print_array(&s, intel_dp->common_rates, intel_dp->num_common_rates); - drm_dbg_kms(display->drm, "common rates: %s\n", seq_buf_str(&s)); + intel_dp_link_caps_print_common_rates(intel_dp->link.caps); } int diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_caps.c b/drivers/gpu/drm/i915/display/intel_dp_link_caps.c index 679d59cc256c..13f9bfd5d7ba 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_link_caps.c +++ b/drivers/gpu/drm/i915/display/intel_dp_link_caps.c @@ -6,6 +6,7 @@ #include <linux/bitops.h> #include <linux/debugfs.h> #include <linux/log2.h> +#include <linux/seq_buf.h> #include <linux/slab.h> #include <linux/sort.h> #include <linux/string.h> @@ -66,6 +67,19 @@ int intel_dp_max_common_rate(struct intel_dp *intel_dp) return intel_dp_common_rate(intel_dp, intel_dp->num_common_rates - 1); } +void intel_dp_link_caps_print_common_rates(struct intel_dp_link_caps *link_caps) +{ + struct intel_dp *intel_dp = link_caps->dp; + struct intel_display *display = to_intel_display(intel_dp); + DECLARE_SEQ_BUF(s, 128); + int i; + + for (i = 0; i < intel_dp->num_common_rates; i++) + seq_buf_printf(&s, "%s%d", i ? ", " : "", intel_dp->common_rates[i]); + + drm_dbg_kms(display->drm, "common rates: %s\n", seq_buf_str(&s)); +} + static int forced_lane_count(struct intel_dp *intel_dp) { struct intel_dp_link_caps *link_caps = intel_dp->link.caps; diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_caps.h b/drivers/gpu/drm/i915/display/intel_dp_link_caps.h index 09e580bc5c9b..7333df6b82f9 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_link_caps.h +++ b/drivers/gpu/drm/i915/display/intel_dp_link_caps.h @@ -16,6 +16,8 @@ int intel_dp_common_len_rate_limit(const struct intel_dp *intel_dp, int intel_dp_common_rate(struct intel_dp *intel_dp, int index); int intel_dp_max_common_rate(struct intel_dp *intel_dp); +void intel_dp_link_caps_print_common_rates(struct intel_dp_link_caps *link_caps); + void intel_dp_link_caps_get_forced_params(struct intel_dp_link_caps *link_caps, struct intel_dp_link_config *forced_params); |