On Thu, 27 Oct 2016, Manasi Navare <[email protected]> wrote:
> This is required to return the index of link rate into
> common_rates array. This gets used to retry the link
> training at lower link rate.
>
> Cc: Jani Nikula <[email protected]>
> Cc: Daniel Vetter <[email protected]>
> Cc: Ville Syrjala <[email protected]>
> Signed-off-by: Manasi Navare <[email protected]>
Please squash this with the following patch that uses it. No need to
have it separately.
BR,
Jani.
> ---
> drivers/gpu/drm/i915/intel_dp.c | 15 +++++++++++++++
> 1 file changed, 15 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
> index aecfd22..39116c8 100644
> --- a/drivers/gpu/drm/i915/intel_dp.c
> +++ b/drivers/gpu/drm/i915/intel_dp.c
> @@ -288,6 +288,21 @@ static int intel_dp_common_rates(struct intel_dp
> *intel_dp,
> common_rates);
> }
>
> +static int intel_dp_link_rate_index(struct intel_dp *intel_dp,
> + int *common_rates, int link_rate)
> +{
> + int common_len;
> + int index;
> +
> + common_len = intel_dp_common_rates(intel_dp, common_rates);
> + for (index = 0; index < common_len; index++) {
> + if (link_rate == common_rates[common_len - index - 1])
> + return common_len - index - 1;
> + }
> +
> + return -1;
> +}
> +
> static enum drm_mode_status
> intel_dp_mode_valid(struct drm_connector *connector,
> struct drm_display_mode *mode)
--
Jani Nikula, Intel Open Source Technology Center
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