Commit 339023ec authored by Shobhit Kumar's avatar Shobhit Kumar Committed by Daniel Vetter
Browse files

drm/i915: Panel commands can be sent only when clock is in LP11 



Signed-off-by: default avatarShobhit Kumar <shobhit.kumar@intel.com>
Reviewed-by: default avatarJani Nikula <jani.nikula@intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent f1c79f16

drivers/gpu/drm/i915/intel_dsi.c

+17 −0
Original line number Diff line number Diff line
@@ -229,6 +229,23 @@ static void intel_dsi_disable(struct intel_encoder *encoder) 
		msleep(2);

	}



	/* Panel commands can be sent when clock is in LP11 */

	I915_WRITE(MIPI_DEVICE_READY(pipe), 0x0);



	temp = I915_READ(MIPI_CTRL(pipe));

	temp &= ~ESCAPE_CLOCK_DIVIDER_MASK;

	I915_WRITE(MIPI_CTRL(pipe), temp |

			intel_dsi->escape_clk_div <<

			ESCAPE_CLOCK_DIVIDER_SHIFT);



	I915_WRITE(MIPI_EOT_DISABLE(pipe), CLOCKSTOP);



	temp = I915_READ(MIPI_DSI_FUNC_PRG(pipe));

	temp &= ~VID_MODE_FORMAT_MASK;

	I915_WRITE(MIPI_DSI_FUNC_PRG(pipe), temp);



	I915_WRITE(MIPI_DEVICE_READY(pipe), 0x1);



	/* if disable packets are sent before sending shutdown packet then in

	 * some next enable sequence send turn on packet error is observed */

	if (intel_dsi->dev.dev_ops->disable)

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