diff options
| author | Jani Nikula <jani.nikula@intel.com> | 2017-10-09 12:29:59 +0300 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2017-10-11 22:04:33 +0300 |
| commit | a8a08886ef8c6a5a740e50e3897466cfd11724ff (patch) | |
| tree | 39bb36348d3903e6a1ebdb084c58ff4b59865210 /drivers/gpu/drm/i915/intel_dp.c | |
| parent | fc603ca7f81d729bbec7ced294f25a93113c49f7 (diff) | |
drm/i915/dp: limit sink rates based on rate
Get rid of redundant intel_dp_num_rates(). We can simply look at the
rate and limit based on that.
Cc: Manasi Navare <manasi.d.navare@intel.com>
Reviewed-by: <manasi.d.navare@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171009092959.29021-3-jani.nikula@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dp.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 26 |
1 files changed, 7 insertions, 19 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 09d75df497c0..b0f446b68f42 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -137,32 +137,20 @@ static void vlv_steal_power_sequencer(struct drm_device *dev, enum pipe pipe); static void intel_dp_unset_edid(struct intel_dp *intel_dp); -static int intel_dp_num_rates(u8 link_bw_code) -{ - switch (link_bw_code) { - default: - WARN(1, "invalid max DP link bw val %x, using 1.62Gbps\n", - link_bw_code); - case DP_LINK_BW_1_62: - return 1; - case DP_LINK_BW_2_7: - return 2; - case DP_LINK_BW_5_4: - return 3; - } -} - /* update sink rates from dpcd */ static void intel_dp_set_sink_rates(struct intel_dp *intel_dp) { - int i, num_rates; + int i, max_rate; - num_rates = intel_dp_num_rates(intel_dp->dpcd[DP_MAX_LINK_RATE]); + max_rate = drm_dp_bw_code_to_link_rate(intel_dp->dpcd[DP_MAX_LINK_RATE]); - for (i = 0; i < num_rates; i++) + for (i = 0; i < ARRAY_SIZE(default_rates); i++) { + if (default_rates[i] > max_rate) + break; intel_dp->sink_rates[i] = default_rates[i]; + } - intel_dp->num_sink_rates = num_rates; + intel_dp->num_sink_rates = i; } /* Theoretical max between source and sink */ |