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Commit 019cec36 authored by Madhav Chauhan's avatar Madhav Chauhan Committed by Jani Nikula
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drm/i915/icl: Disable DSI ports 



This patch disables both DSI ports by writing to
DDI_BUF_CTL registers as part of DSI encoder disable
sequence.

Signed-off-by: default avatarMadhav Chauhan <madhav.chauhan@intel.com>
Reviewed-by: default avatarJani Nikula <jani.nikula@intel.com>
Signed-off-by: default avatarJani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/be9a7dc1ed89ad38679c67ff1c1552f0b4604494.1540900289.git.jani.nikula@intel.com
parent 9c83ab1b

drivers/gpu/drm/i915/icl_dsi.c

+23 −0
Original line number Diff line number Diff line
@@ -853,6 +853,26 @@ static void gen11_dsi_deconfigure_trancoder(struct intel_encoder *encoder) 
	}

}



static void gen11_dsi_disable_port(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);

	u32 tmp;

	enum port port;



	for_each_dsi_port(port, intel_dsi->ports) {

		tmp = I915_READ(DDI_BUF_CTL(port));

		tmp &= ~DDI_BUF_CTL_ENABLE;

		I915_WRITE(DDI_BUF_CTL(port), tmp);



		if (wait_for_us((I915_READ(DDI_BUF_CTL(port)) &

				 DDI_BUF_IS_IDLE),

				 8))

			DRM_ERROR("DDI port:%c buffer not idle\n",

				  port_name(port));

	}

}



static void __attribute__((unused)) gen11_dsi_disable(

			struct intel_encoder *encoder,

			const struct intel_crtc_state *old_crtc_state,
@@ -872,4 +892,7 @@ static void __attribute__((unused)) gen11_dsi_disable( 


	/* step2h,i,j: deconfig trancoder */

	gen11_dsi_deconfigure_trancoder(encoder);



	/* step3: disable port */

	gen11_dsi_disable_port(encoder);

}