This patch enables DSI transcoders by writing to TRANS_CONF registers and wait for its state to be enabled.
Signed-off-by: Madhav Chauhan <[email protected]> --- drivers/gpu/drm/i915/icl_dsi.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/gpu/drm/i915/icl_dsi.c b/drivers/gpu/drm/i915/icl_dsi.c index e7f6005..ae8877a 100644 --- a/drivers/gpu/drm/i915/icl_dsi.c +++ b/drivers/gpu/drm/i915/icl_dsi.c @@ -596,6 +596,28 @@ static void gen11_dsi_set_transcoder_timings(struct intel_encoder *encoder, } } +static void gen11_dsi_enable_transcoder(struct intel_encoder *encoder) +{ + struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); + struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); + enum port port; + enum transcoder dsi_trans; + u32 tmp; + + for_each_dsi_port(port, intel_dsi->ports) { + dsi_trans = dsi_port_to_transcoder(port); + tmp = I915_READ(PIPECONF(dsi_trans)); + tmp |= PIPECONF_ENABLE; + I915_WRITE(PIPECONF(dsi_trans), tmp); + + /* wait for transcoder to be enabled */ + if (intel_wait_for_register(dev_priv, PIPECONF(dsi_trans), + I965_PIPECONF_ACTIVE, + I965_PIPECONF_ACTIVE, 10)) + DRM_ERROR("DSI transcoder not enabled\n"); + } +} + static void gen11_dsi_enable_port_and_phy(struct intel_encoder *encoder, const struct intel_crtc_state *pipe_config) { @@ -635,4 +657,6 @@ gen11_dsi_pre_enable(struct intel_encoder *encoder, /* step6c: configure transcoder timings */ gen11_dsi_set_transcoder_timings(encoder, pipe_config); + /* step6d: enable dsi transcoder */ + gen11_dsi_enable_transcoder(encoder); } -- 2.7.4 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
