The commit message looks good now.
Reviewed-by: <manasi.d.nav...@intel.com>
Manasi
On Wed, Mar 29, 2017 at 12:23:10PM +0300, Jani Nikula wrote:
> In link training fallback, we're trying to find a rate that we know is
> in a sorted array of common link rates. We don't need to limit the array
> using the max rate. For test request, the DP CTS doesn't say we should
> limit the rate based on earlier fallback. This lets us get rid of
> intel_dp_link_rate_index() and use intel_dp_rate_index() instead.
>
> Cc: Manasi Navare <manasi.d.nav...@intel.com>
> Cc: Ville Syrjälä <ville.syrj...@linux.intel.com>
> Signed-off-by: Jani Nikula <jani.nik...@intel.com>
>
> ---
>
> updated commit message, no changes
> ---
> drivers/gpu/drm/i915/intel_dp.c | 31 ++++++++++++-------------------
> 1 file changed, 12 insertions(+), 19 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
> index 1808af6d635d..8c061c54d481 100644
> --- a/drivers/gpu/drm/i915/intel_dp.c
> +++ b/drivers/gpu/drm/i915/intel_dp.c
> @@ -317,25 +317,16 @@ static int intel_dp_common_len_rate_limit(struct
> intel_dp *intel_dp,
> return 0;
> }
>
> -static int intel_dp_link_rate_index(struct intel_dp *intel_dp, int link_rate)
> -{
> - int common_len;
> -
> - common_len = intel_dp_common_len_rate_limit(intel_dp,
> -
> intel_dp->max_sink_link_rate);
> -
> - return intel_dp_rate_index(intel_dp->common_rates, common_len,
> link_rate);
> -}
> -
> int intel_dp_get_link_train_fallback_values(struct intel_dp *intel_dp,
> int link_rate, uint8_t lane_count)
> {
> - const int *common_rates = intel_dp->common_rates;
> - int link_rate_index;
> + int index;
>
> - link_rate_index = intel_dp_link_rate_index(intel_dp, link_rate);
> - if (link_rate_index > 0) {
> - intel_dp->max_sink_link_rate = common_rates[link_rate_index -
> 1];
> + index = intel_dp_rate_index(intel_dp->common_rates,
> + intel_dp->num_common_rates,
> + link_rate);
> + if (index > 0) {
> + intel_dp->max_sink_link_rate = intel_dp->common_rates[index -
> 1];
> intel_dp->max_sink_lane_count = lane_count;
> } else if (lane_count > 1) {
> intel_dp->max_sink_link_rate = intel_dp_max_sink_rate(intel_dp);
> @@ -1685,8 +1676,9 @@ intel_dp_compute_config(struct intel_encoder *encoder,
>
> /* Use values requested by Compliance Test Request */
> if (intel_dp->compliance.test_type == DP_TEST_LINK_TRAINING) {
> - link_rate_index = intel_dp_link_rate_index(intel_dp,
> -
> intel_dp->compliance.test_link_rate);
> + link_rate_index = intel_dp_rate_index(intel_dp->common_rates,
> +
> intel_dp->num_common_rates,
> +
> intel_dp->compliance.test_link_rate);
> if (link_rate_index >= 0)
> min_clock = max_clock = link_rate_index;
> min_lane_count = max_lane_count =
> intel_dp->compliance.test_lane_count;
> @@ -3988,8 +3980,9 @@ static uint8_t intel_dp_autotest_link_training(struct
> intel_dp *intel_dp)
> }
> /* Validate the requested link rate */
> test_link_rate = drm_dp_bw_code_to_link_rate(test_link_bw);
> - link_rate_index = intel_dp_link_rate_index(intel_dp,
> - test_link_rate);
> + link_rate_index = intel_dp_rate_index(intel_dp->common_rates,
> + intel_dp->num_common_rates,
> + test_link_rate);
> if (link_rate_index < 0)
> return DP_TEST_NAK;
>
> --
> 2.1.4
>
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