// SPDX-License-Identifier: MIT
/*
* Copyright © 2020 Intel Corporation
*/
#include "g4x_dp.h"
#include "i915_drv.h"
#include "intel_de.h"
#include "intel_display_types.h"
#include "intel_dp.h"
#include "intel_dpll.h"
#include "intel_pps.h"
static void vlv_steal_power_sequencer(struct drm_i915_private *dev_priv,
enum pipe pipe);
static void pps_init_delays(struct intel_dp *intel_dp);
static void pps_init_registers(struct intel_dp *intel_dp, bool force_disable_vdd);
intel_wakeref_t intel_pps_lock(struct intel_dp *intel_dp)
{
struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
intel_wakeref_t wakeref;
/*
* See intel_pps_reset_all() why we need a power domain reference here.
*/
wakeref = intel_display_power_get(dev_priv, POWER_DOMAIN_DISPLAY_CORE);
mutex_lock(&dev_priv->pps_mutex);
return wakeref;
}
intel_wakeref_t intel_pps_unlock(struct intel_dp *intel_dp,
intel_wakeref_t wakeref)
{
struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
mutex_unlock(&dev_priv->pps_mutex);
intel_display_power_put(dev_priv, POWER_DOMAIN_DISPLAY_CORE, wakeref);
return 0;
}
static void
vlv_power_sequencer_kick(struct intel_dp *intel_dp)
{
struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
enum pipe pipe = intel_dp->pps.pps_pipe;
bool pll_enabled, release_cl_override = false;
enum dpio_phy phy = DPIO_PHY(pipe);
enum dpio_channel ch = vlv_pipe_to_channel(pipe);
u32 DP;
if (drm_WARN(&dev_priv->drm,
intel_de_read(dev_priv, intel_dp->output_reg) & DP_PORT_EN,
"skipping pipe %c power sequencer kick due to [ENCODER:%d:%s] being active\n"