diff options
| author | Jani Nikula <jani.nikula@intel.com> | 2018-02-01 13:03:41 +0200 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2018-02-02 09:50:15 +0200 |
| commit | 10ebb736960cd90eeec7239da2c2b3e8c8a24ef6 (patch) | |
| tree | aec106a192a95beb27f8417ab1d9e86020444f4f /drivers/gpu/drm/i915/intel_dp.c | |
| parent | 006bb4ccac3901d790b56ed4729cd4080a77a895 (diff) | |
drm/i915/dp: abstract rate array length limiting
This will be useful later on. Also move the functions around to not need
forward declarations in subsequent patches. No functional changes.
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/40f37f08cad33234cd86337d39e823ac6e55805f.1517482774.git.jani.nikula@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dp.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 38 |
1 files changed, 22 insertions, 16 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 78cece041ca0..1d4eced394cf 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -155,6 +155,28 @@ static void intel_dp_set_sink_rates(struct intel_dp *intel_dp) intel_dp->num_sink_rates = i; } +/* Get length of rates array potentially limited by max_rate. */ +static int intel_dp_rate_limit_len(const int *rates, int len, int max_rate) +{ + int i; + + /* Limit results by potentially reduced max rate */ + for (i = 0; i < len; i++) { + if (rates[len - i - 1] <= max_rate) + return len - i; + } + + return 0; +} + +/* Get length of common rates array potentially limited by max_rate. */ +static int intel_dp_common_len_rate_limit(const struct intel_dp *intel_dp, + int max_rate) +{ + return intel_dp_rate_limit_len(intel_dp->common_rates, + intel_dp->num_common_rates, max_rate); +} + /* Theoretical max between source and sink */ static int intel_dp_max_common_rate(struct intel_dp *intel_dp) { @@ -326,22 +348,6 @@ static void intel_dp_set_common_rates(struct intel_dp *intel_dp) } } -/* get length of common rates potentially limited by max_rate */ -static int intel_dp_common_len_rate_limit(struct intel_dp *intel_dp, - int max_rate) -{ - const int *common_rates = intel_dp->common_rates; - int i, common_len = intel_dp->num_common_rates; - - /* Limit results by potentially reduced max rate */ - for (i = 0; i < common_len; i++) { - if (common_rates[common_len - i - 1] <= max_rate) - return common_len - i; - } - - return 0; -} - static bool intel_dp_link_params_valid(struct intel_dp *intel_dp, int link_rate, uint8_t lane_count) { |