Commit 303e347c authored by Madhav Chauhan's avatar Madhav Chauhan Committed by Jani Nikula
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drm/i915/icl: Enable DSI transcoders



This patch enables DSI transcoders by writing to
TRANS_CONF registers and wait for its state to be enabled.

v2 by Jani:
 - Rebase

Signed-off-by: default avatarMadhav Chauhan <madhav.chauhan@intel.com>
Signed-off-by: default avatarJani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/4b8ea0298ef9d6832a2dd69c923832d0b7b58184.1539613303.git.jani.nikula@intel.com
parent 372610f3
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+25 −0
Original line number Diff line number Diff line
@@ -591,6 +591,28 @@ 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)
@@ -630,4 +652,7 @@ 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);
}