From 522cc3f717ac19a68847aee9831cb1e39f51f8dd Mon Sep 17 00:00:00 2001 From: Madhav Chauhan Date: Tue, 30 Oct 2018 13:56:15 +0200 Subject: drm/i915/icl: Power down DSI panel This patch sends command and executes display off, assert reset, power off VBT seqeuences to power down DSI panel. Patch also adds high level function to wrap all the panel sepcific programming during DSI disabling. Signed-off-by: Madhav Chauhan Reviewed-by: Jani Nikula Signed-off-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/efdafbf6b4d31123738b87b2d8264a9b5553eb32.1540900289.git.jani.nikula@intel.com --- drivers/gpu/drm/i915/icl_dsi.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'drivers/gpu/drm/i915/icl_dsi.c') diff --git a/drivers/gpu/drm/i915/icl_dsi.c b/drivers/gpu/drm/i915/icl_dsi.c index 644ad7475920..a7b1a9eae04b 100644 --- a/drivers/gpu/drm/i915/icl_dsi.c +++ b/drivers/gpu/drm/i915/icl_dsi.c @@ -800,6 +800,18 @@ static void gen11_dsi_disable_transcoder(struct intel_encoder *encoder) } } +static void gen11_dsi_powerdown_panel(struct intel_encoder *encoder) +{ + struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); + + intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DISPLAY_OFF); + intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_ASSERT_RESET); + intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_POWER_OFF); + + /* ensure cmds dispatched to panel */ + wait_for_cmds_dispatched_to_panel(encoder); +} + static void __attribute__((unused)) gen11_dsi_disable( struct intel_encoder *encoder, const struct intel_crtc_state *old_crtc_state, @@ -813,4 +825,7 @@ static void __attribute__((unused)) gen11_dsi_disable( /* step2d,e: disable transcoder and wait */ gen11_dsi_disable_transcoder(encoder); + + /* step2f,g: powerdown panel */ + gen11_dsi_powerdown_panel(encoder); } -- cgit v1.2.3