drm/i915/pps: abstract panel power sequencer from intel_dp.c

In a long overdue refactoring, split out all panel sequencer code from
intel_dp.c to new intel_pps.[ch].

The first part is mostly just code movement as-is, without cleanups or
functional changes.

We need to add a vlv_get_dpll() helper to get at the vlv/chv dpll from
pps code.

v2: Rebase.

Reviewed-by: Anshuman Gupta <anshuman.gupta@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/14cc59d5734432ad976cd49ff8efce8fa413e5b2.1610127741.git.jani.nikula@intel.com

drivers/gpu/drm/i915/Makefile

@@ -248,6 +248,7 @@ i915-y += \
 	display/intel_lspcon.o \
 	display/intel_lvds.o \
 	display/intel_panel.o \
+	display/intel_pps.o \
 	display/intel_sdvo.o \
 	display/intel_tv.o \
 	display/intel_vdsc.o \

drivers/gpu/drm/i915/display/intel_ddi.c

@@ -46,6 +46,7 @@
 #include "intel_hotplug.h"
 #include "intel_lspcon.h"
 #include "intel_panel.h"
+#include "intel_pps.h"
 #include "intel_psr.h"
 #include "intel_sprite.h"
 #include "intel_tc.h"

drivers/gpu/drm/i915/display/intel_display_power.c

@@ -4,7 +4,6 @@
  */
 
 #include "display/intel_crt.h"
-#include "display/intel_dp.h"
 
 #include "i915_drv.h"
 #include "i915_irq.h"
@@ -16,6 +15,7 @@
 #include "intel_dpio_phy.h"
 #include "intel_hotplug.h"
 #include "intel_pm.h"
+#include "intel_pps.h"
 #include "intel_sideband.h"
 #include "intel_tc.h"
 #include "intel_vga.h"

drivers/gpu/drm/i915/display/intel_dp.h

@@ -70,15 +70,11 @@ enum irqreturn intel_dp_hpd_pulse(struct intel_digital_port *dig_port,
 void intel_edp_backlight_on(const struct intel_crtc_state *crtc_state,
 			    const struct drm_connector_state *conn_state);
 void intel_edp_backlight_off(const struct drm_connector_state *conn_state);
-void intel_edp_panel_vdd_on(struct intel_dp *intel_dp);
-void intel_edp_panel_on(struct intel_dp *intel_dp);
-void intel_edp_panel_off(struct intel_dp *intel_dp);
 void intel_dp_mst_suspend(struct drm_i915_private *dev_priv);
 void intel_dp_mst_resume(struct drm_i915_private *dev_priv);
 int intel_dp_max_link_rate(struct intel_dp *intel_dp);
 int intel_dp_max_lane_count(struct intel_dp *intel_dp);
 int intel_dp_rate_select(struct intel_dp *intel_dp, int rate);
-void intel_power_sequencer_reset(struct drm_i915_private *dev_priv);
 u32 intel_dp_pack_aux(const u8 *src, int src_bytes);
 
 void intel_edp_drrs_enable(struct intel_dp *intel_dp,
@@ -141,6 +137,7 @@ bool intel_dp_initial_fastset_check(struct intel_encoder *encoder,
 				    struct intel_crtc_state *crtc_state);
 void intel_dp_sync_state(struct intel_encoder *encoder,
 			 const struct intel_crtc_state *crtc_state);
+const struct dpll *vlv_get_dpll(struct drm_i915_private *i915);
 
 void intel_dp_check_frl_training(struct intel_dp *intel_dp);
 void intel_dp_pcon_dsc_configure(struct intel_dp *intel_dp,

drivers/gpu/drm/i915/display/intel_pps.h

@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#ifndef __INTEL_PPS_H__
+#define __INTEL_PPS_H__
+
+#include <linux/types.h>
+
+#include "intel_wakeref.h"
+
+struct drm_i915_private;
+struct intel_connector;
+struct intel_crtc_state;
+struct intel_dp;
+struct intel_encoder;
+
+intel_wakeref_t pps_lock(struct intel_dp *intel_dp);
+intel_wakeref_t pps_unlock(struct intel_dp *intel_dp, intel_wakeref_t wakeref);
+
+#define with_pps_lock(dp, wf)						\
+	for ((wf) = pps_lock(dp); (wf); (wf) = pps_unlock((dp), (wf)))
+
+void intel_dp_check_edp(struct intel_dp *intel_dp);
+void _intel_edp_backlight_on(struct intel_dp *intel_dp);
+void _intel_edp_backlight_off(struct intel_dp *intel_dp);
+void intel_edp_backlight_power(struct intel_connector *connector, bool enable);
+
+bool edp_panel_vdd_on(struct intel_dp *intel_dp);
+void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync);
+void edp_panel_vdd_off_sync(struct intel_dp *intel_dp);
+void edp_panel_on(struct intel_dp *intel_dp);
+void edp_panel_off(struct intel_dp *intel_dp);
+void edp_panel_vdd_work(struct work_struct *__work);
+
+void intel_edp_panel_vdd_on(struct intel_dp *intel_dp);
+void intel_edp_panel_on(struct intel_dp *intel_dp);
+void intel_edp_panel_off(struct intel_dp *intel_dp);
+bool intel_edp_have_power(struct intel_dp *intel_dp);
+
+void intel_edp_panel_vdd_sanitize(struct intel_dp *intel_dp);
+
+void wait_panel_power_cycle(struct intel_dp *intel_dp);
+
+void intel_dp_pps_init(struct intel_dp *intel_dp);
+void intel_power_sequencer_reset(struct drm_i915_private *i915);
+void intel_dp_init_panel_power_timestamps(struct intel_dp *intel_dp);
+
+void vlv_init_panel_power_sequencer(struct intel_encoder *encoder,
+				    const struct intel_crtc_state *crtc_state);
+
+#endif /* __INTEL_PPS_H__ */