From: "Joshi, Kunal1" <kunal1.joshi@intel.com>
To: Sowmiya S <sowmiya.s@intel.com>, igt-dev@lists.freedesktop.org
Cc: karthik.b.s@intel.com
Subject: Re: [PATCH i-g-t v5 1/4] lib/i915/i915_dp: Add UHBR helpers and const-correct set_link_params
Date: Wed, 19 Aug 2026 10:54:09 +0530 [thread overview]
Message-ID: <9d84c53c-1de2-432c-a20a-328f6626a20e@intel.com> (raw)
In-Reply-To: <20260817082612.1101382-2-sowmiya.s@intel.com>
On 17-08-2026 13:56, Sowmiya S wrote:
> Add i915_dp_is_uhbr_rate() and i915_dp_get_next_lower_rate(), prep for
> the UHBR-to-HBR fallback subtest later in this series; no caller yet.
>
> i915_dp_get_next_lower_rate() parses intel_dp_allowed_link_configs
> (source & sink & current limits) rather than i915_dp_force_link_rate,
> since the latter is source-only and lets the kernel silently clamp a
> rate the sink never advertised.
>
> Also take link_rate/lane_count as const char * in
> i915_dp_set_link_params() so callers can pass string literals.
>
> v4: - name the UHBR10 threshold and make i915_dp_is_uhbr_rate() a
> static inline in the header to avoid a cross-TU call (Kunal)
> - parse intel_dp_allowed_link_configs instead of the source-only
> i915_dp_force_link_rate list in i915_dp_get_next_lower_rate()
> (Kunal)
> - avoid the implicit long to int narrowing on the return value
> (Kunal)
>
> Signed-off-by: Sowmiya S <sowmiya.s@intel.com>
Reviewed-by: Kunal Joshi <kunal1.joshi@intel.com>
next prev parent reply other threads:[~2026-08-19 5:24 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-17 8:26 [PATCH i-g-t v5 0/4] kms_dp_linktrain_fallback: Add UHBR-to-HBR fallback subtest Sowmiya S
2026-08-17 8:26 ` [PATCH i-g-t v5 1/4] lib/i915/i915_dp: Add UHBR helpers and const-correct set_link_params Sowmiya S
2026-08-19 5:24 ` Joshi, Kunal1 [this message]
2026-08-17 8:26 ` [PATCH i-g-t v5 2/4] tests/intel/kms_dp_linktrain_fallback: Reset traversed MST output count Sowmiya S
2026-08-19 5:24 ` Joshi, Kunal1
2026-08-17 8:26 ` [PATCH i-g-t v5 3/4] tests/intel/kms_dp_linktrain_fallback: Add UHBR-to-HBR fallback subtest Sowmiya S
2026-08-19 5:25 ` Joshi, Kunal1
2026-08-17 8:26 ` [PATCH i-g-t v5 4/4] tests/intel/kms_dp_linktrain_fallback: commit display reset before fallback Sowmiya S
2026-08-19 5:16 ` Joshi, Kunal1
2026-08-17 9:02 ` [PATCH i-g-t v5 0/4] kms_dp_linktrain_fallback: Add UHBR-to-HBR fallback subtest Jani Nikula
2026-08-17 9:21 ` S, Sowmiya
2026-08-17 9:50 ` Jani Nikula
2026-08-17 16:23 ` ✓ Xe.CI.BAT: success for kms_dp_linktrain_fallback: Add UHBR-to-HBR fallback subtest (rev3) Patchwork
2026-08-17 16:39 ` ✓ i915.CI.BAT: " Patchwork
2026-08-17 19:04 ` ✗ Xe.CI.FULL: failure " Patchwork
2026-08-18 6:30 ` ✗ i915.CI.Full: " Patchwork
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