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Commit b1cb21a5 authored by Madhav Chauhan's avatar Madhav Chauhan Committed by Jani Nikula
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drm/i915/icl: Enable DSI IO power 



This patch configures mode of operation for DSI
and enable DDI IO power by configuring power well.

v2: Use for_each_dsi_port() for power get (Jani N)

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/1530798591-2077-5-git-send-email-madhav.chauhan@intel.com
parent 21652f3b

drivers/gpu/drm/i915/icl_dsi.c

+23 −0
Original line number Original line Diff line number Diff line
@@ -54,11 +54,34 @@ static void gen11_dsi_program_esc_clk_div(struct intel_encoder *encoder) 
	}

	}

}

}





static void gen11_dsi_enable_io_power(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;

	u32 tmp;



	for_each_dsi_port(port, intel_dsi->ports) {

		tmp = I915_READ(ICL_DSI_IO_MODECTL(port));

		tmp |= COMBO_PHY_MODE_DSI;

		I915_WRITE(ICL_DSI_IO_MODECTL(port), tmp);

	}



	for_each_dsi_port(port, intel_dsi->ports) {

		intel_display_power_get(dev_priv, port == PORT_A ?

					POWER_DOMAIN_PORT_DDI_A_IO :

					POWER_DOMAIN_PORT_DDI_B_IO);

	}

}



static void __attribute__((unused))

static void __attribute__((unused))

gen11_dsi_pre_enable(struct intel_encoder *encoder,

gen11_dsi_pre_enable(struct intel_encoder *encoder,

		     const struct intel_crtc_state *pipe_config,

		     const struct intel_crtc_state *pipe_config,

		     const struct drm_connector_state *conn_state)

		     const struct drm_connector_state *conn_state)

{

{

	/* step2: enable IO power */

	gen11_dsi_enable_io_power(encoder);



	/* step3: enable DSI PLL */

	/* step3: enable DSI PLL */

	gen11_dsi_program_esc_clk_div(encoder);

	gen11_dsi_program_esc_clk_div(encoder);

}
 
}