Add a helper to compute the number of pipes to be joined. The num of pipes joined will depend on whether the joiner is required or is forced through the debugfs.
Signed-off-by: Ankit Nautiyal <[email protected]> --- drivers/gpu/drm/i915/display/intel_dp.c | 46 +++++++++++++++------ drivers/gpu/drm/i915/display/intel_dp.h | 6 +-- drivers/gpu/drm/i915/display/intel_dp_mst.c | 14 ++++--- 3 files changed, 46 insertions(+), 20 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 5c30d4488141..333624fcebd7 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -1261,17 +1261,33 @@ intel_dp_mode_valid_downstream(struct intel_connector *connector, return MODE_OK; } -bool intel_dp_need_joiner(struct intel_dp *intel_dp, - struct intel_connector *connector, - int hdisplay, int clock) +static +bool intel_dp_needs_bigjoiner(struct intel_dp *intel_dp, + struct intel_connector *connector, + int hdisplay, int clock) { struct drm_i915_private *i915 = dp_to_i915(intel_dp); - if (!intel_dp_has_joiner(intel_dp)) - return false; + return clock > i915->display.cdclk.max_dotclk_freq || hdisplay > 5120; +} - return clock > i915->display.cdclk.max_dotclk_freq || hdisplay > 5120 || - connector->force_joined_pipes == 2; +int intel_dp_compute_joiner_pipes(struct intel_dp *intel_dp, + struct intel_connector *connector, + int hdisplay, int clock) +{ + switch (connector->force_joined_pipes) { + case 2: + return connector->force_joined_pipes; + default: + MISSING_CASE(connector->force_joined_pipes); + fallthrough; + case 0: + if (intel_dp_has_joiner(intel_dp) && + intel_dp_needs_bigjoiner(intel_dp, connector, hdisplay, clock)) + return 2; + } + + return 0; } bool intel_dp_has_dsc(const struct intel_connector *connector) @@ -1309,6 +1325,7 @@ intel_dp_mode_valid(struct drm_connector *_connector, u8 dsc_slice_count = 0; enum drm_mode_status status; bool dsc = false, joiner = false; + int num_joined_pipes; status = intel_cpu_transcoder_mode_valid(dev_priv, mode); if (status != MODE_OK) @@ -1329,11 +1346,14 @@ intel_dp_mode_valid(struct drm_connector *_connector, target_clock = fixed_mode->clock; } - if (intel_dp_need_joiner(intel_dp, connector, - mode->hdisplay, target_clock)) { + num_joined_pipes = intel_dp_compute_joiner_pipes(intel_dp, connector, + mode->hdisplay, target_clock); + + if (num_joined_pipes == 2) { joiner = true; max_dotclk *= 2; } + if (target_clock > max_dotclk) return MODE_CLOCK_HIGH; @@ -2523,15 +2543,17 @@ intel_dp_compute_link_config(struct intel_encoder *encoder, struct intel_dp *intel_dp = enc_to_intel_dp(encoder); struct link_config_limits limits; bool dsc_needed, joiner_needs_dsc; + int num_joined_pipes; int ret = 0; if (pipe_config->fec_enable && !intel_dp_supports_fec(intel_dp, connector, pipe_config)) return -EINVAL; - if (intel_dp_need_joiner(intel_dp, connector, - adjusted_mode->crtc_hdisplay, - adjusted_mode->crtc_clock)) + num_joined_pipes = intel_dp_compute_joiner_pipes(intel_dp, connector, + adjusted_mode->crtc_hdisplay, + adjusted_mode->crtc_clock); + if (num_joined_pipes == 2) pipe_config->joiner_pipes = GENMASK(crtc->pipe + 1, crtc->pipe); joiner_needs_dsc = intel_dp_joiner_needs_dsc(i915, pipe_config->joiner_pipes); diff --git a/drivers/gpu/drm/i915/display/intel_dp.h b/drivers/gpu/drm/i915/display/intel_dp.h index 1b9aaddd8c35..bc9a82d82df2 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.h +++ b/drivers/gpu/drm/i915/display/intel_dp.h @@ -153,9 +153,9 @@ int intel_dp_dsc_sink_max_compressed_bpp(const struct intel_connector *connector u8 intel_dp_dsc_get_slice_count(const struct intel_connector *connector, int mode_clock, int mode_hdisplay, bool bigjoiner); -bool intel_dp_need_joiner(struct intel_dp *intel_dp, - struct intel_connector *connector, - int hdisplay, int clock); +int intel_dp_compute_joiner_pipes(struct intel_dp *intel_dp, + struct intel_connector *connector, + int hdisplay, int clock); static inline unsigned int intel_dp_unused_lane_mask(int lane_count) { diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c index 15541932b809..383b3e38df52 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c @@ -568,6 +568,7 @@ static int intel_dp_mst_compute_config(struct intel_encoder *encoder, &pipe_config->hw.adjusted_mode; struct link_config_limits limits; bool dsc_needed, joiner_needs_dsc; + int num_joined_pipes; int ret = 0; if (pipe_config->fec_enable && @@ -577,9 +578,10 @@ static int intel_dp_mst_compute_config(struct intel_encoder *encoder, if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN) return -EINVAL; - if (intel_dp_need_joiner(intel_dp, connector, - adjusted_mode->crtc_hdisplay, - adjusted_mode->crtc_clock)) + num_joined_pipes = intel_dp_compute_joiner_pipes(intel_dp, connector, + adjusted_mode->crtc_hdisplay, + adjusted_mode->crtc_clock); + if (num_joined_pipes == 2) pipe_config->joiner_pipes = GENMASK(crtc->pipe + 1, crtc->pipe); pipe_config->sink_format = INTEL_OUTPUT_FORMAT_RGB; @@ -1426,6 +1428,7 @@ intel_dp_mst_mode_valid_ctx(struct drm_connector *connector, u16 dsc_max_compressed_bpp = 0; u8 dsc_slice_count = 0; int target_clock = mode->clock; + int num_joined_pipes; if (drm_connector_is_unregistered(connector)) { *status = MODE_ERROR; @@ -1465,8 +1468,9 @@ intel_dp_mst_mode_valid_ctx(struct drm_connector *connector, * corresponding link capabilities of the sink) in case the * stream is uncompressed for it by the last branch device. */ - if (intel_dp_need_joiner(intel_dp, intel_connector, - mode->hdisplay, target_clock)) { + num_joined_pipes = intel_dp_compute_joiner_pipes(intel_dp, intel_connector, + mode->hdisplay, target_clock); + if (num_joined_pipes == 2) { joiner = true; max_dotclk *= 2; } -- 2.45.2
