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/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2019 Intel Corporation
*/
#include "display/intel_crt.h"
#include "display/intel_dp.h"
#include "i915_drv.h"
#include "i915_irq.h"
#include "intel_cdclk.h"
#include "intel_combo_phy.h"
#include "intel_csr.h"
#include "intel_display_power.h"
#include "intel_display_types.h"
#include "intel_dpio_phy.h"
#include "intel_hotplug.h"
#include "intel_sideband.h"
#include "intel_tc.h"
#include "intel_vga.h"
bool intel_display_power_well_is_enabled(struct drm_i915_private *dev_priv,
enum i915_power_well_id power_well_id);
const char *
intel_display_power_domain_str(enum intel_display_power_domain domain)
{
switch (domain) {
case POWER_DOMAIN_DISPLAY_CORE:
return "DISPLAY_CORE";
case POWER_DOMAIN_PIPE_A:
return "PIPE_A";
case POWER_DOMAIN_PIPE_B:
return "PIPE_B";
case POWER_DOMAIN_PIPE_C:
return "PIPE_C";
case POWER_DOMAIN_PIPE_D:
return "PIPE_D";
case POWER_DOMAIN_PIPE_A_PANEL_FITTER:
return "PIPE_A_PANEL_FITTER";
case POWER_DOMAIN_PIPE_B_PANEL_FITTER:
return "PIPE_B_PANEL_FITTER";
case POWER_DOMAIN_PIPE_C_PANEL_FITTER:
return "PIPE_C_PANEL_FITTER";
case POWER_DOMAIN_PIPE_D_PANEL_FITTER:
return "PIPE_D_PANEL_FITTER";
case POWER_DOMAIN_TRANSCODER_A:
return "TRANSCODER_A";
case POWER_DOMAIN_TRANSCODER_B:
return "TRANSCODER_B";
case POWER_DOMAIN_TRANSCODER_C:
return "TRANSCODER_C";
case POWER_DOMAIN_TRANSCODER_D:
return "TRANSCODER_D";
case POWER_DOMAIN_TRANSCODER_EDP:
return "TRANSCODER_EDP";
case POWER_DOMAIN_TRANSCODER_VDSC_PW2:
return "TRANSCODER_VDSC_PW2";
case POWER_DOMAIN_TRANSCODER_DSI_A:
return "TRANSCODER_DSI_A";
case POWER_DOMAIN_TRANSCODER_DSI_C:
return "TRANSCODER_DSI_C";
case POWER_DOMAIN_PORT_DDI_A_LANES:
return "PORT_DDI_A_LANES";
case POWER_DOMAIN_PORT_DDI_B_LANES:
return "PORT_DDI_B_LANES";
case POWER_DOMAIN_PORT_DDI_C_LANES:
return "PORT_DDI_C_LANES";
case POWER_DOMAIN_PORT_DDI_D_LANES:
return "PORT_DDI_D_LANES";
case POWER_DOMAIN_PORT_DDI_E_LANES:
return "PORT_DDI_E_LANES";
case POWER_DOMAIN_PORT_DDI_F_LANES:
return "PORT_DDI_F_LANES";
case POWER_DOMAIN_PORT_DDI_G_LANES:
return "PORT_DDI_G_LANES";
case POWER_DOMAIN_PORT_DDI_H_LANES:
return "PORT_DDI_H_LANES";
case POWER_DOMAIN_PORT_DDI_I_LANES:
return "PORT_DDI_I_LANES";
case POWER_DOMAIN_PORT_DDI_A_IO:
return "PORT_DDI_A_IO";
case POWER_DOMAIN_PORT_DDI_B_IO:
return "PORT_DDI_B_IO";
case POWER_DOMAIN_PORT_DDI_C_IO:
return "PORT_DDI_C_IO";
case POWER_DOMAIN_PORT_DDI_D_IO:
return "PORT_DDI_D_IO";
case POWER_DOMAIN_PORT_DDI_E_IO:
return "PORT_DDI_E_IO";
case POWER_DOMAIN_PORT_DDI_F_IO:
return "PORT_DDI_F_IO";
case POWER_DOMAIN_PORT_DDI_G_IO:
return "PORT_DDI_G_IO";
case POWER_DOMAIN_PORT_DDI_H_IO:
return "PORT_DDI_H_IO";
case POWER_DOMAIN_PORT_DDI_I_IO:
return "PORT_DDI_I_IO";
case POWER_DOMAIN_PORT_DSI:
return "PORT_DSI";
case POWER_DOMAIN_PORT_CRT:
return "PORT_CRT";
case POWER_DOMAIN_PORT_OTHER:
return "PORT_OTHER";
case POWER_DOMAIN_VGA:
return "VGA";
case POWER_DOMAIN_AUDIO:
return "AUDIO";
case POWER_DOMAIN_AUX_A:
return "AUX_A";
case POWER_DOMAIN_AUX_B:
return "AUX_B";
case POWER_DOMAIN_AUX_C:
return "AUX_C";
case POWER_DOMAIN_AUX_D:
return "AUX_D";
case POWER_DOMAIN_AUX_E:
return "AUX_E";
case POWER_DOMAIN_AUX_F:
return "AUX_F";
case POWER_DOMAIN_AUX_G:
return "AUX_G";
case POWER_DOMAIN_AUX_H:
return "AUX_H";
case POWER_DOMAIN_AUX_I:
return "AUX_I";
case POWER_DOMAIN_AUX_IO_A:
return "AUX_IO_A";
case POWER_DOMAIN_AUX_C_TBT:
return "AUX_C_TBT";
case POWER_DOMAIN_AUX_D_TBT:
return "AUX_D_TBT";
case POWER_DOMAIN_AUX_E_TBT:
return "AUX_E_TBT";
case POWER_DOMAIN_AUX_F_TBT:
return "AUX_F_TBT";
case POWER_DOMAIN_AUX_G_TBT:
return "AUX_G_TBT";
case POWER_DOMAIN_AUX_H_TBT:
return "AUX_H_TBT";
case POWER_DOMAIN_AUX_I_TBT:
return "AUX_I_TBT";
case POWER_DOMAIN_GMBUS:
return "GMBUS";
case POWER_DOMAIN_INIT:
return "INIT";
case POWER_DOMAIN_MODESET:
return "MODESET";
case POWER_DOMAIN_GT_IRQ:
return "GT_IRQ";
case POWER_DOMAIN_DPLL_DC_OFF:
return "DPLL_DC_OFF";
default:
MISSING_CASE(domain);
return "?";
}
}
static void intel_power_well_enable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
DRM_DEBUG_KMS("enabling %s\n", power_well->desc->name);
power_well->desc->ops->enable(dev_priv, power_well);
power_well->hw_enabled = true;
}
static void intel_power_well_disable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
DRM_DEBUG_KMS("disabling %s\n", power_well->desc->name);
power_well->hw_enabled = false;
power_well->desc->ops->disable(dev_priv, power_well);
}
static void intel_power_well_get(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
if (!power_well->count++)
intel_power_well_enable(dev_priv, power_well);
}
static void intel_power_well_put(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
WARN(!power_well->count, "Use count on power well %s is already zero",
power_well->desc->name);
if (!--power_well->count)
intel_power_well_disable(dev_priv, power_well);
}
/**
* __intel_display_power_is_enabled - unlocked check for a power domain
* @dev_priv: i915 device instance
* @domain: power domain to check
*
* This is the unlocked version of intel_display_power_is_enabled() and should
* only be used from error capture and recovery code where deadlocks are
* possible.
*
* Returns:
* True when the power domain is enabled, false otherwise.
*/
bool __intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
enum intel_display_power_domain domain)
{
struct i915_power_well *power_well;
bool is_enabled;
if (dev_priv->runtime_pm.suspended)
return false;
is_enabled = true;
for_each_power_domain_well_reverse(dev_priv, power_well, BIT_ULL(domain)) {
if (power_well->desc->always_on)
continue;
if (!power_well->hw_enabled) {
is_enabled = false;
break;
}
}
return is_enabled;
}
/**
* intel_display_power_is_enabled - check for a power domain
* @dev_priv: i915 device instance
* @domain: power domain to check
*
* This function can be used to check the hw power domain state. It is mostly
* used in hardware state readout functions. Everywhere else code should rely
* upon explicit power domain reference counting to ensure that the hardware
* block is powered up before accessing it.
*
* Callers must hold the relevant modesetting locks to ensure that concurrent
* threads can't disable the power well while the caller tries to read a few
* registers.
*
* Returns:
* True when the power domain is enabled, false otherwise.
*/
bool intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
enum intel_display_power_domain domain)
{
struct i915_power_domains *power_domains;
bool ret;
power_domains = &dev_priv->power_domains;
mutex_lock(&power_domains->lock);
ret = __intel_display_power_is_enabled(dev_priv, domain);
mutex_unlock(&power_domains->lock);
return ret;
}
/*
* Starting with Haswell, we have a "Power Down Well" that can be turned off
* when not needed anymore. We have 4 registers that can request the power well
* to be enabled, and it will only be disabled if none of the registers is
* requesting it to be enabled.
*/
static void hsw_power_well_post_enable(struct drm_i915_private *dev_priv,
u8 irq_pipe_mask, bool has_vga)
{
if (has_vga)
intel_vga_reset_io_mem(dev_priv);
if (irq_pipe_mask)
gen8_irq_power_well_post_enable(dev_priv, irq_pipe_mask);
}
static void hsw_power_well_pre_disable(struct drm_i915_private *dev_priv,
u8 irq_pipe_mask)
{
if (irq_pipe_mask)
gen8_irq_power_well_pre_disable(dev_priv, irq_pipe_mask);
}
static void hsw_wait_for_power_well_enable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
int pw_idx = power_well->desc->hsw.idx;
/* Timeout for PW1:10 us, AUX:not specified, other PWs:20 us. */
if (intel_de_wait_for_set(dev_priv, regs->driver,
HSW_PWR_WELL_CTL_STATE(pw_idx), 1)) {
DRM_DEBUG_KMS("%s power well enable timeout\n",
power_well->desc->name);
/* An AUX timeout is expected if the TBT DP tunnel is down. */
WARN_ON(!power_well->desc->hsw.is_tc_tbt);
}
}
static u32 hsw_power_well_requesters(struct drm_i915_private *dev_priv,
const struct i915_power_well_regs *regs,
int pw_idx)
{
u32 req_mask = HSW_PWR_WELL_CTL_REQ(pw_idx);
u32 ret;
ret = I915_READ(regs->bios) & req_mask ? 1 : 0;
ret |= I915_READ(regs->driver) & req_mask ? 2 : 0;
if (regs->kvmr.reg)
ret |= I915_READ(regs->kvmr) & req_mask ? 4 : 0;
ret |= I915_READ(regs->debug) & req_mask ? 8 : 0;
return ret;
}
static void hsw_wait_for_power_well_disable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
int pw_idx = power_well->desc->hsw.idx;
bool disabled;
u32 reqs;
/*
* Bspec doesn't require waiting for PWs to get disabled, but still do
* this for paranoia. The known cases where a PW will be forced on:
* - a KVMR request on any power well via the KVMR request register
* - a DMC request on PW1 and MISC_IO power wells via the BIOS and
* DEBUG request registers
* Skip the wait in case any of the request bits are set and print a
* diagnostic message.
*/
wait_for((disabled = !(I915_READ(regs->driver) &
HSW_PWR_WELL_CTL_STATE(pw_idx))) ||
(reqs = hsw_power_well_requesters(dev_priv, regs, pw_idx)), 1);
if (disabled)
return;
DRM_DEBUG_KMS("%s forced on (bios:%d driver:%d kvmr:%d debug:%d)\n",
power_well->desc->name,
!!(reqs & 1), !!(reqs & 2), !!(reqs & 4), !!(reqs & 8));
}
static void gen9_wait_for_power_well_fuses(struct drm_i915_private *dev_priv,
enum skl_power_gate pg)
{
/* Timeout 5us for PG#0, for other PGs 1us */
WARN_ON(intel_de_wait_for_set(dev_priv, SKL_FUSE_STATUS,
SKL_FUSE_PG_DIST_STATUS(pg), 1));
}
static void hsw_power_well_enable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
int pw_idx = power_well->desc->hsw.idx;
bool wait_fuses = power_well->desc->hsw.has_fuses;
enum skl_power_gate uninitialized_var(pg);
u32 val;
if (wait_fuses) {
pg = INTEL_GEN(dev_priv) >= 11 ? ICL_PW_CTL_IDX_TO_PG(pw_idx) :
SKL_PW_CTL_IDX_TO_PG(pw_idx);
/*
* For PW1 we have to wait both for the PW0/PG0 fuse state
* before enabling the power well and PW1/PG1's own fuse
* state after the enabling. For all other power wells with
* fuses we only have to wait for that PW/PG's fuse state
* after the enabling.
*/
if (pg == SKL_PG1)
gen9_wait_for_power_well_fuses(dev_priv, SKL_PG0);
}
val = I915_READ(regs->driver);
I915_WRITE(regs->driver, val | HSW_PWR_WELL_CTL_REQ(pw_idx));
hsw_wait_for_power_well_enable(dev_priv, power_well);
/* Display WA #1178: cnl */
if (IS_CANNONLAKE(dev_priv) &&
pw_idx >= GLK_PW_CTL_IDX_AUX_B &&
pw_idx <= CNL_PW_CTL_IDX_AUX_F) {
val = I915_READ(CNL_AUX_ANAOVRD1(pw_idx));
val |= CNL_AUX_ANAOVRD1_ENABLE | CNL_AUX_ANAOVRD1_LDO_BYPASS;
I915_WRITE(CNL_AUX_ANAOVRD1(pw_idx), val);
}
if (wait_fuses)
gen9_wait_for_power_well_fuses(dev_priv, pg);
hsw_power_well_post_enable(dev_priv,
power_well->desc->hsw.irq_pipe_mask,
power_well->desc->hsw.has_vga);
}
static void hsw_power_well_disable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
int pw_idx = power_well->desc->hsw.idx;
u32 val;
hsw_power_well_pre_disable(dev_priv,
power_well->desc->hsw.irq_pipe_mask);
val = I915_READ(regs->driver);
I915_WRITE(regs->driver, val & ~HSW_PWR_WELL_CTL_REQ(pw_idx));
hsw_wait_for_power_well_disable(dev_priv, power_well);
}
#define ICL_AUX_PW_TO_PHY(pw_idx) ((pw_idx) - ICL_PW_CTL_IDX_AUX_A)
static void
icl_combo_phy_aux_power_well_enable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
int pw_idx = power_well->desc->hsw.idx;
enum phy phy = ICL_AUX_PW_TO_PHY(pw_idx);
u32 val;
WARN_ON(!IS_ICELAKE(dev_priv));
val = I915_READ(regs->driver);
I915_WRITE(regs->driver, val | HSW_PWR_WELL_CTL_REQ(pw_idx));
if (INTEL_GEN(dev_priv) < 12) {
val = I915_READ(ICL_PORT_CL_DW12(phy));
I915_WRITE(ICL_PORT_CL_DW12(phy), val | ICL_LANE_ENABLE_AUX);
}
hsw_wait_for_power_well_enable(dev_priv, power_well);
/* Display WA #1178: icl */
if (pw_idx >= ICL_PW_CTL_IDX_AUX_A && pw_idx <= ICL_PW_CTL_IDX_AUX_B &&
!intel_bios_is_port_edp(dev_priv, (enum port)phy)) {
val = I915_READ(ICL_AUX_ANAOVRD1(pw_idx));
val |= ICL_AUX_ANAOVRD1_ENABLE | ICL_AUX_ANAOVRD1_LDO_BYPASS;
I915_WRITE(ICL_AUX_ANAOVRD1(pw_idx), val);
}
}
static void
icl_combo_phy_aux_power_well_disable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
int pw_idx = power_well->desc->hsw.idx;
enum phy phy = ICL_AUX_PW_TO_PHY(pw_idx);
u32 val;
WARN_ON(!IS_ICELAKE(dev_priv));
val = I915_READ(ICL_PORT_CL_DW12(phy));
I915_WRITE(ICL_PORT_CL_DW12(phy), val & ~ICL_LANE_ENABLE_AUX);
val = I915_READ(regs->driver);
I915_WRITE(regs->driver, val & ~HSW_PWR_WELL_CTL_REQ(pw_idx));
hsw_wait_for_power_well_disable(dev_priv, power_well);
}
#define ICL_AUX_PW_TO_CH(pw_idx) \
((pw_idx) - ICL_PW_CTL_IDX_AUX_A + AUX_CH_A)
#define ICL_TBT_AUX_PW_TO_CH(pw_idx) \
((pw_idx) - ICL_PW_CTL_IDX_AUX_TBT1 + AUX_CH_C)
static enum aux_ch icl_tc_phy_aux_ch(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
int pw_idx = power_well->desc->hsw.idx;
return power_well->desc->hsw.is_tc_tbt ? ICL_TBT_AUX_PW_TO_CH(pw_idx) :
ICL_AUX_PW_TO_CH(pw_idx);
}
#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
static u64 async_put_domains_mask(struct i915_power_domains *power_domains);
static int power_well_async_ref_count(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
int refs = hweight64(power_well->desc->domains &
async_put_domains_mask(&dev_priv->power_domains));
WARN_ON(refs > power_well->count);
return refs;
}
static void icl_tc_port_assert_ref_held(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
enum aux_ch aux_ch = icl_tc_phy_aux_ch(dev_priv, power_well);
struct intel_digital_port *dig_port = NULL;
struct intel_encoder *encoder;
/* Bypass the check if all references are released asynchronously */
if (power_well_async_ref_count(dev_priv, power_well) ==
power_well->count)
return;
aux_ch = icl_tc_phy_aux_ch(dev_priv, power_well);
for_each_intel_encoder(&dev_priv->drm, encoder) {
enum phy phy = intel_port_to_phy(dev_priv, encoder->port);
if (!intel_phy_is_tc(dev_priv, phy))
continue;
/* We'll check the MST primary port */
if (encoder->type == INTEL_OUTPUT_DP_MST)
continue;
dig_port = enc_to_dig_port(encoder);
if (WARN_ON(!dig_port))
continue;
if (dig_port->aux_ch != aux_ch) {
dig_port = NULL;
continue;
}
break;
}
if (WARN_ON(!dig_port))
return;
WARN_ON(!intel_tc_port_ref_held(dig_port));
}
#else
static void icl_tc_port_assert_ref_held(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
}
#endif
#define TGL_AUX_PW_TO_TC_PORT(pw_idx) ((pw_idx) - TGL_PW_CTL_IDX_AUX_TC1)
static void
icl_tc_phy_aux_power_well_enable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
enum aux_ch aux_ch = icl_tc_phy_aux_ch(dev_priv, power_well);
u32 val;
icl_tc_port_assert_ref_held(dev_priv, power_well);
val = I915_READ(DP_AUX_CH_CTL(aux_ch));
val &= ~DP_AUX_CH_CTL_TBT_IO;
if (power_well->desc->hsw.is_tc_tbt)
val |= DP_AUX_CH_CTL_TBT_IO;
I915_WRITE(DP_AUX_CH_CTL(aux_ch), val);
hsw_power_well_enable(dev_priv, power_well);
if (INTEL_GEN(dev_priv) >= 12 && !power_well->desc->hsw.is_tc_tbt) {
enum tc_port tc_port;
tc_port = TGL_AUX_PW_TO_TC_PORT(power_well->desc->hsw.idx);
I915_WRITE(HIP_INDEX_REG(tc_port), HIP_INDEX_VAL(tc_port, 0x2));
if (intel_de_wait_for_set(dev_priv, DKL_CMN_UC_DW_27(tc_port),
DKL_CMN_UC_DW27_UC_HEALTH, 1))
DRM_WARN("Timeout waiting TC uC health\n");
}
}
static void
icl_tc_phy_aux_power_well_disable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
icl_tc_port_assert_ref_held(dev_priv, power_well);
hsw_power_well_disable(dev_priv, power_well);
}
/*
* We should only use the power well if we explicitly asked the hardware to
* enable it, so check if it's enabled and also check if we've requested it to
* be enabled.
*/
static bool hsw_power_well_enabled(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
enum i915_power_well_id id = power_well->desc->id;
int pw_idx = power_well->desc->hsw.idx;
u32 mask = HSW_PWR_WELL_CTL_REQ(pw_idx) |
HSW_PWR_WELL_CTL_STATE(pw_idx);
u32 val;
val = I915_READ(regs->driver);
/*
* On GEN9 big core due to a DMC bug the driver's request bits for PW1
* and the MISC_IO PW will be not restored, so check instead for the
* BIOS's own request bits, which are forced-on for these power wells
* when exiting DC5/6.
*/
if (IS_GEN(dev_priv, 9) && !IS_GEN9_LP(dev_priv) &&
(id == SKL_DISP_PW_1 || id == SKL_DISP_PW_MISC_IO))
val |= I915_READ(regs->bios);
return (val & mask) == mask;
}
static void assert_can_enable_dc9(struct drm_i915_private *dev_priv)
{
WARN_ONCE((I915_READ(DC_STATE_EN) & DC_STATE_EN_DC9),
"DC9 already programmed to be enabled.\n");
WARN_ONCE(I915_READ(DC_STATE_EN) & DC_STATE_EN_UPTO_DC5,
"DC5 still not disabled to enable DC9.\n");
WARN_ONCE(I915_READ(HSW_PWR_WELL_CTL2) &
HSW_PWR_WELL_CTL_REQ(SKL_PW_CTL_IDX_PW_2),
"Power well 2 on.\n");
WARN_ONCE(intel_irqs_enabled(dev_priv),
"Interrupts not disabled yet.\n");
/*
* TODO: check for the following to verify the conditions to enter DC9
* state are satisfied:
* 1] Check relevant display engine registers to verify if mode set
* disable sequence was followed.
* 2] Check if display uninitialize sequence is initialized.
*/
}
static void assert_can_disable_dc9(struct drm_i915_private *dev_priv)
{
WARN_ONCE(intel_irqs_enabled(dev_priv),
"Interrupts not disabled yet.\n");
WARN_ONCE(I915_READ(DC_STATE_EN) & DC_STATE_EN_UPTO_DC5,
"DC5 still not disabled.\n");
/*
* TODO: check for the following to verify DC9 state was indeed
* entered before programming to disable it:
* 1] Check relevant display engine registers to verify if mode
* set disable sequence was followed.
* 2] Check if display uninitialize sequence is initialized.
*/
}
static void gen9_write_dc_state(struct drm_i915_private *dev_priv,
u32 state)
{
int rewrites = 0;
int rereads = 0;
u32 v;
I915_WRITE(DC_STATE_EN, state);
/* It has been observed that disabling the dc6 state sometimes
* doesn't stick and dmc keeps returning old value. Make sure
* the write really sticks enough times and also force rewrite until
* we are confident that state is exactly what we want.
*/
do {
v = I915_READ(DC_STATE_EN);
if (v != state) {
I915_WRITE(DC_STATE_EN, state);
rewrites++;
rereads = 0;
} else if (rereads++ > 5) {
break;
}
} while (rewrites < 100);
if (v != state)
DRM_ERROR("Writing dc state to 0x%x failed, now 0x%x\n",
state, v);
/* Most of the times we need one retry, avoid spam */
if (rewrites > 1)
DRM_DEBUG_KMS("Rewrote dc state to 0x%x %d times\n",
state, rewrites);
}
static u32 gen9_dc_mask(struct drm_i915_private *dev_priv)
{
u32 mask;
mask = DC_STATE_EN_UPTO_DC5;
if (INTEL_GEN(dev_priv) >= 12)
mask |= DC_STATE_EN_DC3CO | DC_STATE_EN_UPTO_DC6
| DC_STATE_EN_DC9;
else if (IS_GEN(dev_priv, 11))
mask |= DC_STATE_EN_UPTO_DC6 | DC_STATE_EN_DC9;
else if (IS_GEN9_LP(dev_priv))
mask |= DC_STATE_EN_DC9;
else
mask |= DC_STATE_EN_UPTO_DC6;
return mask;
}
static void gen9_sanitize_dc_state(struct drm_i915_private *dev_priv)
{
u32 val;
val = I915_READ(DC_STATE_EN) & gen9_dc_mask(dev_priv);
DRM_DEBUG_KMS("Resetting DC state tracking from %02x to %02x\n",
dev_priv->csr.dc_state, val);
dev_priv->csr.dc_state = val;
}
/**
* gen9_set_dc_state - set target display C power state
* @dev_priv: i915 device instance
* @state: target DC power state
* - DC_STATE_DISABLE
* - DC_STATE_EN_UPTO_DC5
* - DC_STATE_EN_UPTO_DC6
* - DC_STATE_EN_DC9
*
* Signal to DMC firmware/HW the target DC power state passed in @state.
* DMC/HW can turn off individual display clocks and power rails when entering
* a deeper DC power state (higher in number) and turns these back when exiting
* that state to a shallower power state (lower in number). The HW will decide
* when to actually enter a given state on an on-demand basis, for instance
* depending on the active state of display pipes. The state of display
* registers backed by affected power rails are saved/restored as needed.
*
* Based on the above enabling a deeper DC power state is asynchronous wrt.
* enabling it. Disabling a deeper power state is synchronous: for instance
* setting %DC_STATE_DISABLE won't complete until all HW resources are turned
* back on and register state is restored. This is guaranteed by the MMIO write
* to DC_STATE_EN blocking until the state is restored.
*/
static void gen9_set_dc_state(struct drm_i915_private *dev_priv, u32 state)
{
u32 val;
u32 mask;
if (WARN_ON_ONCE(state & ~dev_priv->csr.allowed_dc_mask))
state &= dev_priv->csr.allowed_dc_mask;
val = I915_READ(DC_STATE_EN);
mask = gen9_dc_mask(dev_priv);
DRM_DEBUG_KMS("Setting DC state from %02x to %02x\n",
val & mask, state);
/* Check if DMC is ignoring our DC state requests */
if ((val & mask) != dev_priv->csr.dc_state)
DRM_ERROR("DC state mismatch (0x%x -> 0x%x)\n",
dev_priv->csr.dc_state, val & mask);
val &= ~mask;
val |= state;
gen9_write_dc_state(dev_priv, val);
dev_priv->csr.dc_state = val & mask;
}
static u32
sanitize_target_dc_state(struct drm_i915_private *dev_priv,
u32 target_dc_state)
{
u32 states[] = {
DC_STATE_EN_UPTO_DC6,
DC_STATE_EN_UPTO_DC5,
DC_STATE_EN_DC3CO,
DC_STATE_DISABLE,
};
int i;
for (i = 0; i < ARRAY_SIZE(states) - 1; i++) {
if (target_dc_state != states[i])
continue;
if (dev_priv->csr.allowed_dc_mask & target_dc_state)
break;
target_dc_state = states[i + 1];
}
return target_dc_state;
}
static void tgl_enable_dc3co(struct drm_i915_private *dev_priv)
{
DRM_DEBUG_KMS("Enabling DC3CO\n");
gen9_set_dc_state(dev_priv, DC_STATE_EN_DC3CO);
}
static void tgl_disable_dc3co(struct drm_i915_private *dev_priv)
{
u32 val;
DRM_DEBUG_KMS("Disabling DC3CO\n");
val = I915_READ(DC_STATE_EN);
val &= ~DC_STATE_DC3CO_STATUS;
I915_WRITE(DC_STATE_EN, val);
gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
/*
* Delay of 200us DC3CO Exit time B.Spec 49196
*/
usleep_range(200, 210);
}
static void bxt_enable_dc9(struct drm_i915_private *dev_priv)
{
assert_can_enable_dc9(dev_priv);
DRM_DEBUG_KMS("Enabling DC9\n");
/*
* Power sequencer reset is not needed on
* platforms with South Display Engine on PCH,
* because PPS registers are always on.
*/
if (!HAS_PCH_SPLIT(dev_priv))
intel_power_sequencer_reset(dev_priv);
gen9_set_dc_state(dev_priv, DC_STATE_EN_DC9);
}
static void bxt_disable_dc9(struct drm_i915_private *dev_priv)
{
assert_can_disable_dc9(dev_priv);
DRM_DEBUG_KMS("Disabling DC9\n");
gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
intel_pps_unlock_regs_wa(dev_priv);
}
static void assert_csr_loaded(struct drm_i915_private *dev_priv)
{
WARN_ONCE(!I915_READ(CSR_PROGRAM(0)),
"CSR program storage start is NULL\n");
WARN_ONCE(!I915_READ(CSR_SSP_BASE), "CSR SSP Base Not fine\n");
WARN_ONCE(!I915_READ(CSR_HTP_SKL), "CSR HTP Not fine\n");
}
static struct i915_power_well *
lookup_power_well(struct drm_i915_private *dev_priv,
enum i915_power_well_id power_well_id)
{
struct i915_power_well *power_well;
for_each_power_well(dev_priv, power_well)
if (power_well->desc->id == power_well_id)
return power_well;
/*
* It's not feasible to add error checking code to the callers since
* this condition really shouldn't happen and it doesn't even make sense
* to abort things like display initialization sequences. Just return
* the first power well and hope the WARN gets reported so we can fix
* our driver.
*/
WARN(1, "Power well %d not defined for this platform\n", power_well_id);
return &dev_priv->power_domains.power_wells[0];
}
/**
* intel_display_power_set_target_dc_state - Set target dc state.
* @dev_priv: i915 device
* @state: state which needs to be set as target_dc_state.
*
* This function set the "DC off" power well target_dc_state,
* based upon this target_dc_stste, "DC off" power well will
* enable desired DC state.
*/
void intel_display_power_set_target_dc_state(struct drm_i915_private *dev_priv,
u32 state)
{
struct i915_power_well *power_well;
bool dc_off_enabled;
struct i915_power_domains *power_domains = &dev_priv->power_domains;
mutex_lock(&power_domains->lock);
power_well = lookup_power_well(dev_priv, SKL_DISP_DC_OFF);
if (WARN_ON(!power_well))
goto unlock;
state = sanitize_target_dc_state(dev_priv, state);
if (state == dev_priv->csr.target_dc_state)
goto unlock;
dc_off_enabled = power_well->desc->ops->is_enabled(dev_priv,
power_well);
/*
* If DC off power well is disabled, need to enable and disable the
* DC off power well to effect target DC state.
*/
if (!dc_off_enabled)
power_well->desc->ops->enable(dev_priv, power_well);
dev_priv->csr.target_dc_state = state;
if (!dc_off_enabled)
power_well->desc->ops->disable(dev_priv, power_well);
unlock:
mutex_unlock(&power_domains->lock);
}
static void assert_can_enable_dc5(struct drm_i915_private *dev_priv)
{
bool pg2_enabled = intel_display_power_well_is_enabled(dev_priv,
SKL_DISP_PW_2);
WARN_ONCE(pg2_enabled, "PG2 not disabled to enable DC5.\n");
WARN_ONCE((I915_READ(DC_STATE_EN) & DC_STATE_EN_UPTO_DC5),
"DC5 already programmed to be enabled.\n");
assert_rpm_wakelock_held(&dev_priv->runtime_pm);
assert_csr_loaded(dev_priv);
}
static void gen9_enable_dc5(struct drm_i915_private *dev_priv)
{
assert_can_enable_dc5(dev_priv);
DRM_DEBUG_KMS("Enabling DC5\n");
/* Wa Display #1183: skl,kbl,cfl */
if (IS_GEN9_BC(dev_priv))
I915_WRITE(GEN8_CHICKEN_DCPR_1, I915_READ(GEN8_CHICKEN_DCPR_1) |
SKL_SELECT_ALTERNATE_DC_EXIT);
gen9_set_dc_state(dev_priv, DC_STATE_EN_UPTO_DC5);
}
static void assert_can_enable_dc6(struct drm_i915_private *dev_priv)
{
WARN_ONCE(I915_READ(UTIL_PIN_CTL) & UTIL_PIN_ENABLE,
"Backlight is not disabled.\n");
WARN_ONCE((I915_READ(DC_STATE_EN) & DC_STATE_EN_UPTO_DC6),
"DC6 already programmed to be enabled.\n");
assert_csr_loaded(dev_priv);
}
static void skl_enable_dc6(struct drm_i915_private *dev_priv)
{
assert_can_enable_dc6(dev_priv);
DRM_DEBUG_KMS("Enabling DC6\n");
/* Wa Display #1183: skl,kbl,cfl */
if (IS_GEN9_BC(dev_priv))
I915_WRITE(GEN8_CHICKEN_DCPR_1, I915_READ(GEN8_CHICKEN_DCPR_1) |
SKL_SELECT_ALTERNATE_DC_EXIT);
gen9_set_dc_state(dev_priv, DC_STATE_EN_UPTO_DC6);
}
static void hsw_power_well_sync_hw(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
int pw_idx = power_well->desc->hsw.idx;
u32 mask = HSW_PWR_WELL_CTL_REQ(pw_idx);
u32 bios_req = I915_READ(regs->bios);
/* Take over the request bit if set by BIOS. */
if (bios_req & mask) {
u32 drv_req = I915_READ(regs->driver);
if (!(drv_req & mask))
I915_WRITE(regs->driver, drv_req | mask);
I915_WRITE(regs->bios, bios_req & ~mask);
}
}
static void bxt_dpio_cmn_power_well_enable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
bxt_ddi_phy_init(dev_priv, power_well->desc->bxt.phy);
}
static void bxt_dpio_cmn_power_well_disable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
bxt_ddi_phy_uninit(dev_priv, power_well->desc->bxt.phy);
}
static bool bxt_dpio_cmn_power_well_enabled(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
return bxt_ddi_phy_is_enabled(dev_priv, power_well->desc->bxt.phy);
}
static void bxt_verify_ddi_phy_power_wells(struct drm_i915_private *dev_priv)
{
struct i915_power_well *power_well;
power_well = lookup_power_well(dev_priv, BXT_DISP_PW_DPIO_CMN_A);
if (power_well->count > 0)
bxt_ddi_phy_verify_state(dev_priv, power_well->desc->bxt.phy);
power_well = lookup_power_well(dev_priv, VLV_DISP_PW_DPIO_CMN_BC);
if (power_well->count > 0)
bxt_ddi_phy_verify_state(dev_priv, power_well->desc->bxt.phy);
if (IS_GEMINILAKE(dev_priv)) {
power_well = lookup_power_well(dev_priv,
GLK_DISP_PW_DPIO_CMN_C);
if (power_well->count > 0)
bxt_ddi_phy_verify_state(dev_priv,
power_well->desc->bxt.phy);
}
}
static bool gen9_dc_off_power_well_enabled(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
return ((I915_READ(DC_STATE_EN) & DC_STATE_EN_DC3CO) == 0 &&
(I915_READ(DC_STATE_EN) & DC_STATE_EN_UPTO_DC5_DC6_MASK) == 0);
}
static void gen9_assert_dbuf_enabled(struct drm_i915_private *dev_priv)
{
u32 tmp = I915_READ(DBUF_CTL);
WARN((tmp & (DBUF_POWER_STATE | DBUF_POWER_REQUEST)) !=
(DBUF_POWER_STATE | DBUF_POWER_REQUEST),
"Unexpected DBuf power power state (0x%08x)\n", tmp);
}
static void gen9_disable_dc_states(struct drm_i915_private *dev_priv)
{
struct intel_cdclk_state cdclk_state = {};
if (dev_priv->csr.target_dc_state == DC_STATE_EN_DC3CO) {
tgl_disable_dc3co(dev_priv);
return;
}
gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
dev_priv->display.get_cdclk(dev_priv, &cdclk_state);
/* Can't read out voltage_level so can't use intel_cdclk_changed() */
WARN_ON(intel_cdclk_needs_modeset(&dev_priv->cdclk.hw, &cdclk_state));
gen9_assert_dbuf_enabled(dev_priv);
if (IS_GEN9_LP(dev_priv))
bxt_verify_ddi_phy_power_wells(dev_priv);
if (INTEL_GEN(dev_priv) >= 11)
/*
* DMC retains HW context only for port A, the other combo
* PHY's HW context for port B is lost after DC transitions,
* so we need to restore it manually.
*/
intel_combo_phy_init(dev_priv);
}
static void gen9_dc_off_power_well_enable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
gen9_disable_dc_states(dev_priv);
}
static void gen9_dc_off_power_well_disable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
if (!dev_priv->csr.dmc_payload)
return;
switch (dev_priv->csr.target_dc_state) {
case DC_STATE_EN_DC3CO:
tgl_enable_dc3co(dev_priv);
break;
case DC_STATE_EN_UPTO_DC6:
skl_enable_dc6(dev_priv);
break;
case DC_STATE_EN_UPTO_DC5:
gen9_enable_dc5(dev_priv);
break;
}
}
static void i9xx_power_well_sync_hw_noop(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
}
static void i9xx_always_on_power_well_noop(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
}
static bool i9xx_always_on_power_well_enabled(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
return true;
}
static void i830_pipes_power_well_enable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
if ((I915_READ(PIPECONF(PIPE_A)) & PIPECONF_ENABLE) == 0)
i830_enable_pipe(dev_priv, PIPE_A);
if ((I915_READ(PIPECONF(PIPE_B)) & PIPECONF_ENABLE) == 0)
i830_enable_pipe(dev_priv, PIPE_B);
}
static void i830_pipes_power_well_disable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
i830_disable_pipe(dev_priv, PIPE_B);
i830_disable_pipe(dev_priv, PIPE_A);
}
static bool i830_pipes_power_well_enabled(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
return I915_READ(PIPECONF(PIPE_A)) & PIPECONF_ENABLE &&
I915_READ(PIPECONF(PIPE_B)) & PIPECONF_ENABLE;
}
static void i830_pipes_power_well_sync_hw(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
if (power_well->count > 0)
i830_pipes_power_well_enable(dev_priv, power_well);
else
i830_pipes_power_well_disable(dev_priv, power_well);
}
static void vlv_set_power_well(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well, bool enable)
{
int pw_idx = power_well->desc->vlv.idx;
u32 mask;
u32 state;
u32 ctrl;
mask = PUNIT_PWRGT_MASK(pw_idx);
state = enable ? PUNIT_PWRGT_PWR_ON(pw_idx) :
PUNIT_PWRGT_PWR_GATE(pw_idx);
vlv_punit_get(dev_priv);
#define COND \
((vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_STATUS) & mask) == state)
if (COND)
goto out;
ctrl = vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_CTRL);
ctrl &= ~mask;
ctrl |= state;
vlv_punit_write(dev_priv, PUNIT_REG_PWRGT_CTRL, ctrl);
if (wait_for(COND, 100))
DRM_ERROR("timeout setting power well state %08x (%08x)\n",
state,
vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_CTRL));
#undef COND
out:
vlv_punit_put(dev_priv);
}
static void vlv_power_well_enable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
vlv_set_power_well(dev_priv, power_well, true);
}
static void vlv_power_well_disable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
vlv_set_power_well(dev_priv, power_well, false);
}
static bool vlv_power_well_enabled(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
int pw_idx = power_well->desc->vlv.idx;
bool enabled = false;
u32 mask;
u32 state;
u32 ctrl;
mask = PUNIT_PWRGT_MASK(pw_idx);
ctrl = PUNIT_PWRGT_PWR_ON(pw_idx);
vlv_punit_get(dev_priv);
state = vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_STATUS) & mask;
/*
* We only ever set the power-on and power-gate states, anything
* else is unexpected.
*/
WARN_ON(state != PUNIT_PWRGT_PWR_ON(pw_idx) &&
state != PUNIT_PWRGT_PWR_GATE(pw_idx));
if (state == ctrl)
enabled = true;
/*
* A transient state at this point would mean some unexpected party
* is poking at the power controls too.
*/
ctrl = vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_CTRL) & mask;
WARN_ON(ctrl != state);
vlv_punit_put(dev_priv);
return enabled;
}
static void vlv_init_display_clock_gating(struct drm_i915_private *dev_priv)
{
u32 val;
/*
* On driver load, a pipe may be active and driving a DSI display.
* Preserve DPOUNIT_CLOCK_GATE_DISABLE to avoid the pipe getting stuck
* (and never recovering) in this case. intel_dsi_post_disable() will
* clear it when we turn off the display.
*/
val = I915_READ(DSPCLK_GATE_D);
val &= DPOUNIT_CLOCK_GATE_DISABLE;
val |= VRHUNIT_CLOCK_GATE_DISABLE;
I915_WRITE(DSPCLK_GATE_D, val);
/*
* Disable trickle feed and enable pnd deadline calculation
*/
I915_WRITE(MI_ARB_VLV, MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE);
I915_WRITE(CBR1_VLV, 0);
WARN_ON(dev_priv->rawclk_freq == 0);
I915_WRITE(RAWCLK_FREQ_VLV,
DIV_ROUND_CLOSEST(dev_priv->rawclk_freq, 1000));
}
static void vlv_display_power_well_init(struct drm_i915_private *dev_priv)
{
struct intel_encoder *encoder;
enum pipe pipe;
/*
* Enable the CRI clock source so we can get at the
* display and the reference clock for VGA
* hotplug / manual detection. Supposedly DSI also
* needs the ref clock up and running.
*
* CHV DPLL B/C have some issues if VGA mode is enabled.
*/
for_each_pipe(dev_priv, pipe) {
u32 val = I915_READ(DPLL(pipe));
val |= DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
if (pipe != PIPE_A)
val |= DPLL_INTEGRATED_CRI_CLK_VLV;
I915_WRITE(DPLL(pipe), val);
}
vlv_init_display_clock_gating(dev_priv);
spin_lock_irq(&dev_priv->irq_lock);
valleyview_enable_display_irqs(dev_priv);
spin_unlock_irq(&dev_priv->irq_lock);
/*
* During driver initialization/resume we can avoid restoring the
* part of the HW/SW state that will be inited anyway explicitly.
*/
if (dev_priv->power_domains.initializing)
return;
intel_hpd_init(dev_priv);
/* Re-enable the ADPA, if we have one */
for_each_intel_encoder(&dev_priv->drm, encoder) {
if (encoder->type == INTEL_OUTPUT_ANALOG)
intel_crt_reset(&encoder->base);
}
intel_vga_redisable_power_on(dev_priv);
intel_pps_unlock_regs_wa(dev_priv);
}
static void vlv_display_power_well_deinit(struct drm_i915_private *dev_priv)
{
spin_lock_irq(&dev_priv->irq_lock);
valleyview_disable_display_irqs(dev_priv);
spin_unlock_irq(&dev_priv->irq_lock);
/* make sure we're done processing display irqs */
intel_synchronize_irq(dev_priv);
intel_power_sequencer_reset(dev_priv);
/* Prevent us from re-enabling polling on accident in late suspend */
if (!dev_priv->drm.dev->power.is_suspended)
intel_hpd_poll_init(dev_priv);
}
static void vlv_display_power_well_enable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
vlv_set_power_well(dev_priv, power_well, true);
vlv_display_power_well_init(dev_priv);
}
static void vlv_display_power_well_disable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
vlv_display_power_well_deinit(dev_priv);
vlv_set_power_well(dev_priv, power_well, false);
}
static void vlv_dpio_cmn_power_well_enable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
/* since ref/cri clock was enabled */
udelay(1); /* >10ns for cmnreset, >0ns for sidereset */
vlv_set_power_well(dev_priv, power_well, true);
/*
* From VLV2A0_DP_eDP_DPIO_driver_vbios_notes_10.docx -
* 6. De-assert cmn_reset/side_reset. Same as VLV X0.
* a. GUnit 0x2110 bit[0] set to 1 (def 0)
* b. The other bits such as sfr settings / modesel may all
* be set to 0.
*
* This should only be done on init and resume from S3 with
* both PLLs disabled, or we risk losing DPIO and PLL
* synchronization.
*/
I915_WRITE(DPIO_CTL, I915_READ(DPIO_CTL) | DPIO_CMNRST);
}
static void vlv_dpio_cmn_power_well_disable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
enum pipe pipe;
for_each_pipe(dev_priv, pipe)
assert_pll_disabled(dev_priv, pipe);
/* Assert common reset */
I915_WRITE(DPIO_CTL, I915_READ(DPIO_CTL) & ~DPIO_CMNRST);
vlv_set_power_well(dev_priv, power_well, false);
}
#define POWER_DOMAIN_MASK (GENMASK_ULL(POWER_DOMAIN_NUM - 1, 0))
#define BITS_SET(val, bits) (((val) & (bits)) == (bits))
static void assert_chv_phy_status(struct drm_i915_private *dev_priv)
{
struct i915_power_well *cmn_bc =
lookup_power_well(dev_priv, VLV_DISP_PW_DPIO_CMN_BC);
struct i915_power_well *cmn_d =
lookup_power_well(dev_priv, CHV_DISP_PW_DPIO_CMN_D);
u32 phy_control = dev_priv->chv_phy_control;
u32 phy_status = 0;
u32 phy_status_mask = 0xffffffff;
/*
* The BIOS can leave the PHY is some weird state
* where it doesn't fully power down some parts.
* Disable the asserts until the PHY has been fully
* reset (ie. the power well has been disabled at
* least once).
*/
if (!dev_priv->chv_phy_assert[DPIO_PHY0])
phy_status_mask &= ~(PHY_STATUS_CMN_LDO(DPIO_PHY0, DPIO_CH0) |
PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH0, 0) |
PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH0, 1) |
PHY_STATUS_CMN_LDO(DPIO_PHY0, DPIO_CH1) |
PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH1, 0) |
PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH1, 1));
if (!dev_priv->chv_phy_assert[DPIO_PHY1])
phy_status_mask &= ~(PHY_STATUS_CMN_LDO(DPIO_PHY1, DPIO_CH0) |
PHY_STATUS_SPLINE_LDO(DPIO_PHY1, DPIO_CH0, 0) |
PHY_STATUS_SPLINE_LDO(DPIO_PHY1, DPIO_CH0, 1));
if (cmn_bc->desc->ops->is_enabled(dev_priv, cmn_bc)) {
phy_status |= PHY_POWERGOOD(DPIO_PHY0);
/* this assumes override is only used to enable lanes */
if ((phy_control & PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY0, DPIO_CH0)) == 0)
phy_control |= PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY0, DPIO_CH0);
if ((phy_control & PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY0, DPIO_CH1)) == 0)
phy_control |= PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY0, DPIO_CH1);
/* CL1 is on whenever anything is on in either channel */
if (BITS_SET(phy_control,
PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY0, DPIO_CH0) |
PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY0, DPIO_CH1)))
phy_status |= PHY_STATUS_CMN_LDO(DPIO_PHY0, DPIO_CH0);
/*
* The DPLLB check accounts for the pipe B + port A usage
* with CL2 powered up but all the lanes in the second channel
* powered down.
*/
if (BITS_SET(phy_control,
PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY0, DPIO_CH1)) &&
(I915_READ(DPLL(PIPE_B)) & DPLL_VCO_ENABLE) == 0)
phy_status |= PHY_STATUS_CMN_LDO(DPIO_PHY0, DPIO_CH1);
if (BITS_SET(phy_control,
PHY_CH_POWER_DOWN_OVRD(0x3, DPIO_PHY0, DPIO_CH0)))
phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH0, 0);
if (BITS_SET(phy_control,
PHY_CH_POWER_DOWN_OVRD(0xc, DPIO_PHY0, DPIO_CH0)))
phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH0, 1);
if (BITS_SET(phy_control,
PHY_CH_POWER_DOWN_OVRD(0x3, DPIO_PHY0, DPIO_CH1)))
phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH1, 0);
if (BITS_SET(phy_control,
PHY_CH_POWER_DOWN_OVRD(0xc, DPIO_PHY0, DPIO_CH1)))
phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH1, 1);
}
if (cmn_d->desc->ops->is_enabled(dev_priv, cmn_d)) {
phy_status |= PHY_POWERGOOD(DPIO_PHY1);
/* this assumes override is only used to enable lanes */
if ((phy_control & PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY1, DPIO_CH0)) == 0)
phy_control |= PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY1, DPIO_CH0);
if (BITS_SET(phy_control,
PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY1, DPIO_CH0)))
phy_status |= PHY_STATUS_CMN_LDO(DPIO_PHY1, DPIO_CH0);
if (BITS_SET(phy_control,
PHY_CH_POWER_DOWN_OVRD(0x3, DPIO_PHY1, DPIO_CH0)))
phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY1, DPIO_CH0, 0);
if (BITS_SET(phy_control,
PHY_CH_POWER_DOWN_OVRD(0xc, DPIO_PHY1, DPIO_CH0)))
phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY1, DPIO_CH0, 1);
}
phy_status &= phy_status_mask;
/*
* The PHY may be busy with some initial calibration and whatnot,
* so the power state can take a while to actually change.
*/
if (intel_de_wait_for_register(dev_priv, DISPLAY_PHY_STATUS,
phy_status_mask, phy_status, 10))
DRM_ERROR("Unexpected PHY_STATUS 0x%08x, expected 0x%08x (PHY_CONTROL=0x%08x)\n",
I915_READ(DISPLAY_PHY_STATUS) & phy_status_mask,
phy_status, dev_priv->chv_phy_control);
}
#undef BITS_SET
static void chv_dpio_cmn_power_well_enable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
enum dpio_phy phy;
enum pipe pipe;
u32 tmp;
WARN_ON_ONCE(power_well->desc->id != VLV_DISP_PW_DPIO_CMN_BC &&
power_well->desc->id != CHV_DISP_PW_DPIO_CMN_D);
if (power_well->desc->id == VLV_DISP_PW_DPIO_CMN_BC) {
pipe = PIPE_A;
phy = DPIO_PHY0;
} else {
pipe = PIPE_C;
phy = DPIO_PHY1;
}
/* since ref/cri clock was enabled */
udelay(1); /* >10ns for cmnreset, >0ns for sidereset */
vlv_set_power_well(dev_priv, power_well, true);
/* Poll for phypwrgood signal */
if (intel_de_wait_for_set(dev_priv, DISPLAY_PHY_STATUS,
PHY_POWERGOOD(phy), 1))
DRM_ERROR("Display PHY %d is not power up\n", phy);
vlv_dpio_get(dev_priv);
/* Enable dynamic power down */
tmp = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW28);
tmp |= DPIO_DYNPWRDOWNEN_CH0 | DPIO_CL1POWERDOWNEN |
DPIO_SUS_CLK_CONFIG_GATE_CLKREQ;
vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW28, tmp);
if (power_well->desc->id == VLV_DISP_PW_DPIO_CMN_BC) {
tmp = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW6_CH1);
tmp |= DPIO_DYNPWRDOWNEN_CH1;
vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW6_CH1, tmp);
} else {
/*
* Force the non-existing CL2 off. BXT does this
* too, so maybe it saves some power even though
* CL2 doesn't exist?
*/
tmp = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW30);
tmp |= DPIO_CL2_LDOFUSE_PWRENB;
vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW30, tmp);
}
vlv_dpio_put(dev_priv);
dev_priv->chv_phy_control |= PHY_COM_LANE_RESET_DEASSERT(phy);
I915_WRITE(DISPLAY_PHY_CONTROL, dev_priv->chv_phy_control);
DRM_DEBUG_KMS("Enabled DPIO PHY%d (PHY_CONTROL=0x%08x)\n",
phy, dev_priv->chv_phy_control);
assert_chv_phy_status(dev_priv);
}
static void chv_dpio_cmn_power_well_disable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
enum dpio_phy phy;
WARN_ON_ONCE(power_well->desc->id != VLV_DISP_PW_DPIO_CMN_BC &&
power_well->desc->id != CHV_DISP_PW_DPIO_CMN_D);
if (power_well->desc->id == VLV_DISP_PW_DPIO_CMN_BC) {
phy = DPIO_PHY0;
assert_pll_disabled(dev_priv, PIPE_A);
assert_pll_disabled(dev_priv, PIPE_B);
} else {
phy = DPIO_PHY1;
assert_pll_disabled(dev_priv, PIPE_C);
}
dev_priv->chv_phy_control &= ~PHY_COM_LANE_RESET_DEASSERT(phy);
I915_WRITE(DISPLAY_PHY_CONTROL, dev_priv->chv_phy_control);
vlv_set_power_well(dev_priv, power_well, false);
DRM_DEBUG_KMS("Disabled DPIO PHY%d (PHY_CONTROL=0x%08x)\n",
phy, dev_priv->chv_phy_control);
/* PHY is fully reset now, so we can enable the PHY state asserts */
dev_priv->chv_phy_assert[phy] = true;
assert_chv_phy_status(dev_priv);
}
static void assert_chv_phy_powergate(struct drm_i915_private *dev_priv, enum dpio_phy phy,
enum dpio_channel ch, bool override, unsigned int mask)
{
enum pipe pipe = phy == DPIO_PHY0 ? PIPE_A : PIPE_C;
u32 reg, val, expected, actual;
/*
* The BIOS can leave the PHY is some weird state
* where it doesn't fully power down some parts.
* Disable the asserts until the PHY has been fully
* reset (ie. the power well has been disabled at
* least once).
*/
if (!dev_priv->chv_phy_assert[phy])
return;
if (ch == DPIO_CH0)
reg = _CHV_CMN_DW0_CH0;
else
reg = _CHV_CMN_DW6_CH1;
vlv_dpio_get(dev_priv);
val = vlv_dpio_read(dev_priv, pipe, reg);
vlv_dpio_put(dev_priv);
/*
* This assumes !override is only used when the port is disabled.
* All lanes should power down even without the override when
* the port is disabled.
*/
if (!override || mask == 0xf) {
expected = DPIO_ALLDL_POWERDOWN | DPIO_ANYDL_POWERDOWN;
/*
* If CH1 common lane is not active anymore
* (eg. for pipe B DPLL) the entire channel will
* shut down, which causes the common lane registers
* to read as 0. That means we can't actually check
* the lane power down status bits, but as the entire
* register reads as 0 it's a good indication that the
* channel is indeed entirely powered down.
*/
if (ch == DPIO_CH1 && val == 0)
expected = 0;
} else if (mask != 0x0) {
expected = DPIO_ANYDL_POWERDOWN;
} else {
expected = 0;
}
if (ch == DPIO_CH0)
actual = val >> DPIO_ANYDL_POWERDOWN_SHIFT_CH0;
else
actual = val >> DPIO_ANYDL_POWERDOWN_SHIFT_CH1;
actual &= DPIO_ALLDL_POWERDOWN | DPIO_ANYDL_POWERDOWN;
WARN(actual != expected,
"Unexpected DPIO lane power down: all %d, any %d. Expected: all %d, any %d. (0x%x = 0x%08x)\n",
!!(actual & DPIO_ALLDL_POWERDOWN), !!(actual & DPIO_ANYDL_POWERDOWN),
!!(expected & DPIO_ALLDL_POWERDOWN), !!(expected & DPIO_ANYDL_POWERDOWN),
reg, val);
}
bool chv_phy_powergate_ch(struct drm_i915_private *dev_priv, enum dpio_phy phy,
enum dpio_channel ch, bool override)
{
struct i915_power_domains *power_domains = &dev_priv->power_domains;
bool was_override;
mutex_lock(&power_domains->lock);
was_override = dev_priv->chv_phy_control & PHY_CH_POWER_DOWN_OVRD_EN(phy, ch);
if (override == was_override)
goto out;
if (override)
dev_priv->chv_phy_control |= PHY_CH_POWER_DOWN_OVRD_EN(phy, ch);
else
dev_priv->chv_phy_control &= ~PHY_CH_POWER_DOWN_OVRD_EN(phy, ch);
I915_WRITE(DISPLAY_PHY_CONTROL, dev_priv->chv_phy_control);
DRM_DEBUG_KMS("Power gating DPIO PHY%d CH%d (DPIO_PHY_CONTROL=0x%08x)\n",
phy, ch, dev_priv->chv_phy_control);
assert_chv_phy_status(dev_priv);
out:
mutex_unlock(&power_domains->lock);
return was_override;
}
void chv_phy_powergate_lanes(struct intel_encoder *encoder,
bool override, unsigned int mask)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
struct i915_power_domains *power_domains = &dev_priv->power_domains;
enum dpio_phy phy = vlv_dport_to_phy(enc_to_dig_port(encoder));
enum dpio_channel ch = vlv_dport_to_channel(enc_to_dig_port(encoder));
mutex_lock(&power_domains->lock);
dev_priv->chv_phy_control &= ~PHY_CH_POWER_DOWN_OVRD(0xf, phy, ch);
dev_priv->chv_phy_control |= PHY_CH_POWER_DOWN_OVRD(mask, phy, ch);
if (override)
dev_priv->chv_phy_control |= PHY_CH_POWER_DOWN_OVRD_EN(phy, ch);
else
dev_priv->chv_phy_control &= ~PHY_CH_POWER_DOWN_OVRD_EN(phy, ch);
I915_WRITE(DISPLAY_PHY_CONTROL, dev_priv->chv_phy_control);
DRM_DEBUG_KMS("Power gating DPIO PHY%d CH%d lanes 0x%x (PHY_CONTROL=0x%08x)\n",
phy, ch, mask, dev_priv->chv_phy_control);
assert_chv_phy_status(dev_priv);
assert_chv_phy_powergate(dev_priv, phy, ch, override, mask);
mutex_unlock(&power_domains->lock);
}
static bool chv_pipe_power_well_enabled(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
enum pipe pipe = PIPE_A;
bool enabled;
u32 state, ctrl;
vlv_punit_get(dev_priv);
state = vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM) & DP_SSS_MASK(pipe);
/*
* We only ever set the power-on and power-gate states, anything
* else is unexpected.
*/
WARN_ON(state != DP_SSS_PWR_ON(pipe) && state != DP_SSS_PWR_GATE(pipe));
enabled = state == DP_SSS_PWR_ON(pipe);
/*
* A transient state at this point would mean some unexpected party
* is poking at the power controls too.
*/
ctrl = vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM) & DP_SSC_MASK(pipe);
WARN_ON(ctrl << 16 != state);
vlv_punit_put(dev_priv);
return enabled;
}
static void chv_set_pipe_power_well(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well,
bool enable)
{
enum pipe pipe = PIPE_A;
u32 state;
u32 ctrl;
state = enable ? DP_SSS_PWR_ON(pipe) : DP_SSS_PWR_GATE(pipe);
vlv_punit_get(dev_priv);
#define COND \
((vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM) & DP_SSS_MASK(pipe)) == state)
if (COND)
goto out;
ctrl = vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM);
ctrl &= ~DP_SSC_MASK(pipe);
ctrl |= enable ? DP_SSC_PWR_ON(pipe) : DP_SSC_PWR_GATE(pipe);
vlv_punit_write(dev_priv, PUNIT_REG_DSPSSPM, ctrl);
if (wait_for(COND, 100))
DRM_ERROR("timeout setting power well state %08x (%08x)\n",
state,
vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM));
#undef COND
out:
vlv_punit_put(dev_priv);
}
static void chv_pipe_power_well_enable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
chv_set_pipe_power_well(dev_priv, power_well, true);
vlv_display_power_well_init(dev_priv);
}
static void chv_pipe_power_well_disable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
vlv_display_power_well_deinit(dev_priv);
chv_set_pipe_power_well(dev_priv, power_well, false);
}
static u64 __async_put_domains_mask(struct i915_power_domains *power_domains)
{
return power_domains->async_put_domains[0] |
power_domains->async_put_domains[1];
}
#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
static bool
assert_async_put_domain_masks_disjoint(struct i915_power_domains *power_domains)
{
return !WARN_ON(power_domains->async_put_domains[0] &
power_domains->async_put_domains[1]);
}
static bool
__async_put_domains_state_ok(struct i915_power_domains *power_domains)
{
enum intel_display_power_domain domain;
bool err = false;
err |= !assert_async_put_domain_masks_disjoint(power_domains);
err |= WARN_ON(!!power_domains->async_put_wakeref !=
!!__async_put_domains_mask(power_domains));
for_each_power_domain(domain, __async_put_domains_mask(power_domains))
err |= WARN_ON(power_domains->domain_use_count[domain] != 1);
return !err;
}
static void print_power_domains(struct i915_power_domains *power_domains,
const char *prefix, u64 mask)
{
enum intel_display_power_domain domain;
DRM_DEBUG_DRIVER("%s (%lu):\n", prefix, hweight64(mask));
for_each_power_domain(domain, mask)
DRM_DEBUG_DRIVER("%s use_count %d\n",
intel_display_power_domain_str(domain),
power_domains->domain_use_count[domain]);
}
static void
print_async_put_domains_state(struct i915_power_domains *power_domains)
{
DRM_DEBUG_DRIVER("async_put_wakeref %u\n",
power_domains->async_put_wakeref);
print_power_domains(power_domains, "async_put_domains[0]",
power_domains->async_put_domains[0]);
print_power_domains(power_domains, "async_put_domains[1]",
power_domains->async_put_domains[1]);
}
static void
verify_async_put_domains_state(struct i915_power_domains *power_domains)
{
if (!__async_put_domains_state_ok(power_domains))
print_async_put_domains_state(power_domains);
}
#else
static void
assert_async_put_domain_masks_disjoint(struct i915_power_domains *power_domains)
{
}
static void
verify_async_put_domains_state(struct i915_power_domains *power_domains)
{
}
#endif /* CONFIG_DRM_I915_DEBUG_RUNTIME_PM */
static u64 async_put_domains_mask(struct i915_power_domains *power_domains)
{
assert_async_put_domain_masks_disjoint(power_domains);
return __async_put_domains_mask(power_domains);
}
static void
async_put_domains_clear_domain(struct i915_power_domains *power_domains,
enum intel_display_power_domain domain)
{
assert_async_put_domain_masks_disjoint(power_domains);
power_domains->async_put_domains[0] &= ~BIT_ULL(domain);
power_domains->async_put_domains[1] &= ~BIT_ULL(domain);
}
static bool
intel_display_power_grab_async_put_ref(struct drm_i915_private *dev_priv,
enum intel_display_power_domain domain)
{
struct i915_power_domains *power_domains = &dev_priv->power_domains;
bool ret = false;
if (!(async_put_domains_mask(power_domains) & BIT_ULL(domain)))
goto out_verify;
async_put_domains_clear_domain(power_domains, domain);
ret = true;
if (async_put_domains_mask(power_domains))
goto out_verify;
cancel_delayed_work(&power_domains->async_put_work);
intel_runtime_pm_put_raw(&dev_priv->runtime_pm,
fetch_and_zero(&power_domains->async_put_wakeref));
out_verify:
verify_async_put_domains_state(power_domains);
return ret;
}
static void
__intel_display_power_get_domain(struct drm_i915_private *dev_priv,
enum intel_display_power_domain domain)
{
struct i915_power_domains *power_domains = &dev_priv->power_domains;
struct i915_power_well *power_well;
if (intel_display_power_grab_async_put_ref(dev_priv, domain))
return;
for_each_power_domain_well(dev_priv, power_well, BIT_ULL(domain))
intel_power_well_get(dev_priv, power_well);
power_domains->domain_use_count[domain]++;
}
/**
* intel_display_power_get - grab a power domain reference
* @dev_priv: i915 device instance
* @domain: power domain to reference
*
* This function grabs a power domain reference for @domain and ensures that the
* power domain and all its parents are powered up. Therefore users should only
* grab a reference to the innermost power domain they need.
*
* Any power domain reference obtained by this function must have a symmetric
* call to intel_display_power_put() to release the reference again.
*/
intel_wakeref_t intel_display_power_get(struct drm_i915_private *dev_priv,
enum intel_display_power_domain domain)
{
struct i915_power_domains *power_domains = &dev_priv->power_domains;
intel_wakeref_t wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
mutex_lock(&power_domains->lock);
__intel_display_power_get_domain(dev_priv, domain);
mutex_unlock(&power_domains->lock);
return wakeref;
}
/**
* intel_display_power_get_if_enabled - grab a reference for an enabled display power domain
* @dev_priv: i915 device instance
* @domain: power domain to reference
*
* This function grabs a power domain reference for @domain and ensures that the
* power domain and all its parents are powered up. Therefore users should only
* grab a reference to the innermost power domain they need.
*
* Any power domain reference obtained by this function must have a symmetric
* call to intel_display_power_put() to release the reference again.
*/
intel_wakeref_t
intel_display_power_get_if_enabled(struct drm_i915_private *dev_priv,
enum intel_display_power_domain domain)
{
struct i915_power_domains *power_domains = &dev_priv->power_domains;
intel_wakeref_t wakeref;
bool is_enabled;
wakeref = intel_runtime_pm_get_if_in_use(&dev_priv->runtime_pm);
if (!wakeref)
return false;
mutex_lock(&power_domains->lock);
if (__intel_display_power_is_enabled(dev_priv, domain)) {
__intel_display_power_get_domain(dev_priv, domain);
is_enabled = true;
} else {
is_enabled = false;
}
mutex_unlock(&power_domains->lock);
if (!is_enabled) {
intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
wakeref = 0;
}
return wakeref;
}
static void
__intel_display_power_put_domain(struct drm_i915_private *dev_priv,
enum intel_display_power_domain domain)
{
struct i915_power_domains *power_domains;
struct i915_power_well *power_well;
const char *name = intel_display_power_domain_str(domain);
power_domains = &dev_priv->power_domains;
WARN(!power_domains->domain_use_count[domain],
"Use count on domain %s is already zero\n",
name);
WARN(async_put_domains_mask(power_domains) & BIT_ULL(domain),
"Async disabling of domain %s is pending\n",
name);
power_domains->domain_use_count[domain]--;
for_each_power_domain_well_reverse(dev_priv, power_well, BIT_ULL(domain))
intel_power_well_put(dev_priv, power_well);
}
static void __intel_display_power_put(struct drm_i915_private *dev_priv,
enum intel_display_power_domain domain)
{
struct i915_power_domains *power_domains = &dev_priv->power_domains;
mutex_lock(&power_domains->lock);
__intel_display_power_put_domain(dev_priv, domain);
mutex_unlock(&power_domains->lock);
}
/**
* intel_display_power_put_unchecked - release an unchecked power domain reference
* @dev_priv: i915 device instance
* @domain: power domain to reference
*
* This function drops the power domain reference obtained by
* intel_display_power_get() and might power down the corresponding hardware
* block right away if this is the last reference.
*
* This function exists only for historical reasons and should be avoided in
* new code, as the correctness of its use cannot be checked. Always use
* intel_display_power_put() instead.
*/
void intel_display_power_put_unchecked(struct drm_i915_private *dev_priv,
enum intel_display_power_domain domain)
{
__intel_display_power_put(dev_priv, domain);
intel_runtime_pm_put_unchecked(&dev_priv->runtime_pm);
}
static void
queue_async_put_domains_work(struct i915_power_domains *power_domains,
intel_wakeref_t wakeref)
{
WARN_ON(power_domains->async_put_wakeref);
power_domains->async_put_wakeref = wakeref;
WARN_ON(!queue_delayed_work(system_unbound_wq,
&power_domains->async_put_work,
msecs_to_jiffies(100)));
}
static void
release_async_put_domains(struct i915_power_domains *power_domains, u64 mask)
{
struct drm_i915_private *dev_priv =
container_of(power_domains, struct drm_i915_private,
power_domains);
struct intel_runtime_pm *rpm = &dev_priv->runtime_pm;
enum intel_display_power_domain domain;
intel_wakeref_t wakeref;
/*
* The caller must hold already raw wakeref, upgrade that to a proper
* wakeref to make the state checker happy about the HW access during
* power well disabling.
*/
assert_rpm_raw_wakeref_held(rpm);
wakeref = intel_runtime_pm_get(rpm);
for_each_power_domain(domain, mask) {
/* Clear before put, so put's sanity check is happy. */
async_put_domains_clear_domain(power_domains, domain);
__intel_display_power_put_domain(dev_priv, domain);
}
intel_runtime_pm_put(rpm, wakeref);
}
static void
intel_display_power_put_async_work(struct work_struct *work)
{
struct drm_i915_private *dev_priv =
container_of(work, struct drm_i915_private,
power_domains.async_put_work.work);
struct i915_power_domains *power_domains = &dev_priv->power_domains;
struct intel_runtime_pm *rpm = &dev_priv->runtime_pm;
intel_wakeref_t new_work_wakeref = intel_runtime_pm_get_raw(rpm);
intel_wakeref_t old_work_wakeref = 0;
mutex_lock(&power_domains->lock);
/*
* Bail out if all the domain refs pending to be released were grabbed
* by subsequent gets or a flush_work.
*/
old_work_wakeref = fetch_and_zero(&power_domains->async_put_wakeref);
if (!old_work_wakeref)
goto out_verify;
release_async_put_domains(power_domains,
power_domains->async_put_domains[0]);
/* Requeue the work if more domains were async put meanwhile. */
if (power_domains->async_put_domains[1]) {
power_domains->async_put_domains[0] =
fetch_and_zero(&power_domains->async_put_domains[1]);
queue_async_put_domains_work(power_domains,
fetch_and_zero(&new_work_wakeref));
}
out_verify:
verify_async_put_domains_state(power_domains);
mutex_unlock(&power_domains->lock);
if (old_work_wakeref)
intel_runtime_pm_put_raw(rpm, old_work_wakeref);
if (new_work_wakeref)
intel_runtime_pm_put_raw(rpm, new_work_wakeref);
}
/**
* intel_display_power_put_async - release a power domain reference asynchronously
* @i915: i915 device instance
* @domain: power domain to reference
* @wakeref: wakeref acquired for the reference that is being released
*
* This function drops the power domain reference obtained by
* intel_display_power_get*() and schedules a work to power down the
* corresponding hardware block if this is the last reference.
*/
void __intel_display_power_put_async(struct drm_i915_private *i915,
enum intel_display_power_domain domain,
intel_wakeref_t wakeref)
{
struct i915_power_domains *power_domains = &i915->power_domains;
struct intel_runtime_pm *rpm = &i915->runtime_pm;
intel_wakeref_t work_wakeref = intel_runtime_pm_get_raw(rpm);
mutex_lock(&power_domains->lock);
if (power_domains->domain_use_count[domain] > 1) {
__intel_display_power_put_domain(i915, domain);
goto out_verify;
}
WARN_ON(power_domains->domain_use_count[domain] != 1);
/* Let a pending work requeue itself or queue a new one. */
if (power_domains->async_put_wakeref) {
power_domains->async_put_domains[1] |= BIT_ULL(domain);
} else {
power_domains->async_put_domains[0] |= BIT_ULL(domain);
queue_async_put_domains_work(power_domains,
fetch_and_zero(&work_wakeref));
}
out_verify:
verify_async_put_domains_state(power_domains);
mutex_unlock(&power_domains->lock);
if (work_wakeref)
intel_runtime_pm_put_raw(rpm, work_wakeref);
intel_runtime_pm_put(rpm, wakeref);
}
/**
* intel_display_power_flush_work - flushes the async display power disabling work
* @i915: i915 device instance
*
* Flushes any pending work that was scheduled by a preceding
* intel_display_power_put_async() call, completing the disabling of the
* corresponding power domains.
*
* Note that the work handler function may still be running after this
* function returns; to ensure that the work handler isn't running use
* intel_display_power_flush_work_sync() instead.
*/
void intel_display_power_flush_work(struct drm_i915_private *i915)
{
struct i915_power_domains *power_domains = &i915->power_domains;
intel_wakeref_t work_wakeref;
mutex_lock(&power_domains->lock);
work_wakeref = fetch_and_zero(&power_domains->async_put_wakeref);
if (!work_wakeref)
goto out_verify;
release_async_put_domains(power_domains,
async_put_domains_mask(power_domains));
cancel_delayed_work(&power_domains->async_put_work);
out_verify:
verify_async_put_domains_state(power_domains);
mutex_unlock(&power_domains->lock);
if (work_wakeref)
intel_runtime_pm_put_raw(&i915->runtime_pm, work_wakeref);
}
/**
* intel_display_power_flush_work_sync - flushes and syncs the async display power disabling work
* @i915: i915 device instance
*
* Like intel_display_power_flush_work(), but also ensure that the work
* handler function is not running any more when this function returns.
*/
static void
intel_display_power_flush_work_sync(struct drm_i915_private *i915)
{
struct i915_power_domains *power_domains = &i915->power_domains;
intel_display_power_flush_work(i915);
cancel_delayed_work_sync(&power_domains->async_put_work);
verify_async_put_domains_state(power_domains);
WARN_ON(power_domains->async_put_wakeref);
}
#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
/**
* intel_display_power_put - release a power domain reference
* @dev_priv: i915 device instance
* @domain: power domain to reference
* @wakeref: wakeref acquired for the reference that is being released
*
* This function drops the power domain reference obtained by
* intel_display_power_get() and might power down the corresponding hardware
* block right away if this is the last reference.
*/
void intel_display_power_put(struct drm_i915_private *dev_priv,
enum intel_display_power_domain domain,
intel_wakeref_t wakeref)
{
__intel_display_power_put(dev_priv, domain);
intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
}
#endif
#define I830_PIPES_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PIPE_A) | \
BIT_ULL(POWER_DOMAIN_PIPE_B) | \
BIT_ULL(POWER_DOMAIN_PIPE_A_PANEL_FITTER) | \
BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define VLV_DISPLAY_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_DISPLAY_CORE) | \
BIT_ULL(POWER_DOMAIN_PIPE_A) | \
BIT_ULL(POWER_DOMAIN_PIPE_B) | \
BIT_ULL(POWER_DOMAIN_PIPE_A_PANEL_FITTER) | \
BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DSI) | \
BIT_ULL(POWER_DOMAIN_PORT_CRT) | \
BIT_ULL(POWER_DOMAIN_VGA) | \
BIT_ULL(POWER_DOMAIN_AUDIO) | \
BIT_ULL(POWER_DOMAIN_AUX_B) | \
BIT_ULL(POWER_DOMAIN_AUX_C) | \
BIT_ULL(POWER_DOMAIN_GMBUS) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define VLV_DPIO_CMN_BC_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_CRT) | \
BIT_ULL(POWER_DOMAIN_AUX_B) | \
BIT_ULL(POWER_DOMAIN_AUX_C) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define VLV_DPIO_TX_B_LANES_01_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
BIT_ULL(POWER_DOMAIN_AUX_B) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define VLV_DPIO_TX_B_LANES_23_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
BIT_ULL(POWER_DOMAIN_AUX_B) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define VLV_DPIO_TX_C_LANES_01_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
BIT_ULL(POWER_DOMAIN_AUX_C) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define VLV_DPIO_TX_C_LANES_23_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
BIT_ULL(POWER_DOMAIN_AUX_C) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define CHV_DISPLAY_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_DISPLAY_CORE) | \
BIT_ULL(POWER_DOMAIN_PIPE_A) | \
BIT_ULL(POWER_DOMAIN_PIPE_B) | \
BIT_ULL(POWER_DOMAIN_PIPE_C) | \
BIT_ULL(POWER_DOMAIN_PIPE_A_PANEL_FITTER) | \
BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \
BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_C) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DSI) | \
BIT_ULL(POWER_DOMAIN_VGA) | \
BIT_ULL(POWER_DOMAIN_AUDIO) | \
BIT_ULL(POWER_DOMAIN_AUX_B) | \
BIT_ULL(POWER_DOMAIN_AUX_C) | \
BIT_ULL(POWER_DOMAIN_AUX_D) | \
BIT_ULL(POWER_DOMAIN_GMBUS) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define CHV_DPIO_CMN_BC_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
BIT_ULL(POWER_DOMAIN_AUX_B) | \
BIT_ULL(POWER_DOMAIN_AUX_C) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define CHV_DPIO_CMN_D_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) | \
BIT_ULL(POWER_DOMAIN_AUX_D) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define HSW_DISPLAY_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PIPE_B) | \
BIT_ULL(POWER_DOMAIN_PIPE_C) | \
BIT_ULL(POWER_DOMAIN_PIPE_A_PANEL_FITTER) | \
BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \
BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_C) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_CRT) | /* DDI E */ \
BIT_ULL(POWER_DOMAIN_VGA) | \
BIT_ULL(POWER_DOMAIN_AUDIO) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define BDW_DISPLAY_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PIPE_B) | \
BIT_ULL(POWER_DOMAIN_PIPE_C) | \
BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \
BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_C) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_CRT) | /* DDI E */ \
BIT_ULL(POWER_DOMAIN_VGA) | \
BIT_ULL(POWER_DOMAIN_AUDIO) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define SKL_DISPLAY_POWERWELL_2_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \
BIT_ULL(POWER_DOMAIN_PIPE_B) | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \
BIT_ULL(POWER_DOMAIN_PIPE_C) | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_C) | \
BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \
BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_E_LANES) | \
BIT_ULL(POWER_DOMAIN_AUX_B) | \
BIT_ULL(POWER_DOMAIN_AUX_C) | \
BIT_ULL(POWER_DOMAIN_AUX_D) | \
BIT_ULL(POWER_DOMAIN_AUDIO) | \
BIT_ULL(POWER_DOMAIN_VGA) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define SKL_DISPLAY_DDI_IO_A_E_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_A_IO) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_E_IO) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define SKL_DISPLAY_DDI_IO_B_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_IO) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define SKL_DISPLAY_DDI_IO_C_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_IO) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define SKL_DISPLAY_DDI_IO_D_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_D_IO) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define SKL_DISPLAY_DC_OFF_POWER_DOMAINS ( \
SKL_DISPLAY_POWERWELL_2_POWER_DOMAINS | \
BIT_ULL(POWER_DOMAIN_GT_IRQ) | \
BIT_ULL(POWER_DOMAIN_MODESET) | \
BIT_ULL(POWER_DOMAIN_AUX_A) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define BXT_DISPLAY_POWERWELL_2_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \
BIT_ULL(POWER_DOMAIN_PIPE_B) | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \
BIT_ULL(POWER_DOMAIN_PIPE_C) | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_C) | \
BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \
BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
BIT_ULL(POWER_DOMAIN_AUX_B) | \
BIT_ULL(POWER_DOMAIN_AUX_C) | \
BIT_ULL(POWER_DOMAIN_AUDIO) | \
BIT_ULL(POWER_DOMAIN_VGA) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define BXT_DISPLAY_DC_OFF_POWER_DOMAINS ( \
BXT_DISPLAY_POWERWELL_2_POWER_DOMAINS | \
BIT_ULL(POWER_DOMAIN_GT_IRQ) | \
BIT_ULL(POWER_DOMAIN_MODESET) | \
BIT_ULL(POWER_DOMAIN_AUX_A) | \
BIT_ULL(POWER_DOMAIN_GMBUS) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define BXT_DPIO_CMN_A_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_A_LANES) | \
BIT_ULL(POWER_DOMAIN_AUX_A) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define BXT_DPIO_CMN_BC_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
BIT_ULL(POWER_DOMAIN_AUX_B) | \
BIT_ULL(POWER_DOMAIN_AUX_C) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define GLK_DISPLAY_POWERWELL_2_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \
BIT_ULL(POWER_DOMAIN_PIPE_B) | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \
BIT_ULL(POWER_DOMAIN_PIPE_C) | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_C) | \
BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \
BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
BIT_ULL(POWER_DOMAIN_AUX_B) | \
BIT_ULL(POWER_DOMAIN_AUX_C) | \
BIT_ULL(POWER_DOMAIN_AUDIO) | \
BIT_ULL(POWER_DOMAIN_VGA) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define GLK_DISPLAY_DDI_IO_A_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_A_IO))
#define GLK_DISPLAY_DDI_IO_B_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_IO))
#define GLK_DISPLAY_DDI_IO_C_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_IO))
#define GLK_DPIO_CMN_A_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_A_LANES) | \
BIT_ULL(POWER_DOMAIN_AUX_A) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define GLK_DPIO_CMN_B_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
BIT_ULL(POWER_DOMAIN_AUX_B) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define GLK_DPIO_CMN_C_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
BIT_ULL(POWER_DOMAIN_AUX_C) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define GLK_DISPLAY_AUX_A_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_A) | \
BIT_ULL(POWER_DOMAIN_AUX_IO_A) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define GLK_DISPLAY_AUX_B_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_B) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define GLK_DISPLAY_AUX_C_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_C) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define GLK_DISPLAY_DC_OFF_POWER_DOMAINS ( \
GLK_DISPLAY_POWERWELL_2_POWER_DOMAINS | \
BIT_ULL(POWER_DOMAIN_GT_IRQ) | \
BIT_ULL(POWER_DOMAIN_MODESET) | \
BIT_ULL(POWER_DOMAIN_AUX_A) | \
BIT_ULL(POWER_DOMAIN_GMBUS) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define CNL_DISPLAY_POWERWELL_2_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \
BIT_ULL(POWER_DOMAIN_PIPE_B) | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \
BIT_ULL(POWER_DOMAIN_PIPE_C) | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_C) | \
BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \
BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_F_LANES) | \
BIT_ULL(POWER_DOMAIN_AUX_B) | \
BIT_ULL(POWER_DOMAIN_AUX_C) | \
BIT_ULL(POWER_DOMAIN_AUX_D) | \
BIT_ULL(POWER_DOMAIN_AUX_F) | \
BIT_ULL(POWER_DOMAIN_AUDIO) | \
BIT_ULL(POWER_DOMAIN_VGA) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define CNL_DISPLAY_DDI_A_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_A_IO) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define CNL_DISPLAY_DDI_B_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_IO) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define CNL_DISPLAY_DDI_C_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_IO) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define CNL_DISPLAY_DDI_D_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_D_IO) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define CNL_DISPLAY_AUX_A_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_A) | \
BIT_ULL(POWER_DOMAIN_AUX_IO_A) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define CNL_DISPLAY_AUX_B_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_B) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define CNL_DISPLAY_AUX_C_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_C) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define CNL_DISPLAY_AUX_D_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_D) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define CNL_DISPLAY_AUX_F_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_F) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define CNL_DISPLAY_DDI_F_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_F_IO) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define CNL_DISPLAY_DC_OFF_POWER_DOMAINS ( \
CNL_DISPLAY_POWERWELL_2_POWER_DOMAINS | \
BIT_ULL(POWER_DOMAIN_GT_IRQ) | \
BIT_ULL(POWER_DOMAIN_MODESET) | \
BIT_ULL(POWER_DOMAIN_AUX_A) | \
BIT_ULL(POWER_DOMAIN_INIT))
/*
* ICL PW_0/PG_0 domains (HW/DMC control):
* - PCI
* - clocks except port PLL
* - central power except FBC
* - shared functions except pipe interrupts, pipe MBUS, DBUF registers
* ICL PW_1/PG_1 domains (HW/DMC control):
* - DBUF function
* - PIPE_A and its planes, except VGA
* - transcoder EDP + PSR
* - transcoder DSI
* - DDI_A
* - FBC
*/
#define ICL_PW_4_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PIPE_C) | \
BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) | \
BIT_ULL(POWER_DOMAIN_INIT))
/* VDSC/joining */
#define ICL_PW_3_POWER_DOMAINS ( \
ICL_PW_4_POWER_DOMAINS | \
BIT_ULL(POWER_DOMAIN_PIPE_B) | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_C) | \
BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_E_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_F_LANES) | \
BIT_ULL(POWER_DOMAIN_AUX_B) | \
BIT_ULL(POWER_DOMAIN_AUX_C) | \
BIT_ULL(POWER_DOMAIN_AUX_D) | \
BIT_ULL(POWER_DOMAIN_AUX_E) | \
BIT_ULL(POWER_DOMAIN_AUX_F) | \
BIT_ULL(POWER_DOMAIN_AUX_C_TBT) | \
BIT_ULL(POWER_DOMAIN_AUX_D_TBT) | \
BIT_ULL(POWER_DOMAIN_AUX_E_TBT) | \
BIT_ULL(POWER_DOMAIN_AUX_F_TBT) | \
BIT_ULL(POWER_DOMAIN_VGA) | \
BIT_ULL(POWER_DOMAIN_AUDIO) | \
BIT_ULL(POWER_DOMAIN_INIT))
/*
* - transcoder WD
* - KVMR (HW control)
*/
#define ICL_PW_2_POWER_DOMAINS ( \
ICL_PW_3_POWER_DOMAINS | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_VDSC_PW2) | \
BIT_ULL(POWER_DOMAIN_INIT))
/*
* - KVMR (HW control)
*/
#define ICL_DISPLAY_DC_OFF_POWER_DOMAINS ( \
ICL_PW_2_POWER_DOMAINS | \
BIT_ULL(POWER_DOMAIN_MODESET) | \
BIT_ULL(POWER_DOMAIN_AUX_A) | \
BIT_ULL(POWER_DOMAIN_DPLL_DC_OFF) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define ICL_DDI_IO_A_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_A_IO))
#define ICL_DDI_IO_B_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_IO))
#define ICL_DDI_IO_C_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_IO))
#define ICL_DDI_IO_D_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_D_IO))
#define ICL_DDI_IO_E_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_E_IO))
#define ICL_DDI_IO_F_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_F_IO))
#define ICL_AUX_A_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_IO_A) | \
BIT_ULL(POWER_DOMAIN_AUX_A))
#define ICL_AUX_B_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_B))
#define ICL_AUX_C_TC1_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_C))
#define ICL_AUX_D_TC2_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_D))
#define ICL_AUX_E_TC3_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_E))
#define ICL_AUX_F_TC4_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_F))
#define ICL_AUX_C_TBT1_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_C_TBT))
#define ICL_AUX_D_TBT2_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_D_TBT))
#define ICL_AUX_E_TBT3_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_E_TBT))
#define ICL_AUX_F_TBT4_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_F_TBT))
#define TGL_PW_5_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PIPE_D) | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_D) | \
BIT_ULL(POWER_DOMAIN_PIPE_D_PANEL_FITTER) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define TGL_PW_4_POWER_DOMAINS ( \
TGL_PW_5_POWER_DOMAINS | \
BIT_ULL(POWER_DOMAIN_PIPE_C) | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_C) | \
BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define TGL_PW_3_POWER_DOMAINS ( \
TGL_PW_4_POWER_DOMAINS | \
BIT_ULL(POWER_DOMAIN_PIPE_B) | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \
BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_E_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_F_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_G_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_H_LANES) | \
BIT_ULL(POWER_DOMAIN_PORT_DDI_I_LANES) | \
BIT_ULL(POWER_DOMAIN_AUX_D) | \
BIT_ULL(POWER_DOMAIN_AUX_E) | \
BIT_ULL(POWER_DOMAIN_AUX_F) | \
BIT_ULL(POWER_DOMAIN_AUX_G) | \
BIT_ULL(POWER_DOMAIN_AUX_H) | \
BIT_ULL(POWER_DOMAIN_AUX_I) | \
BIT_ULL(POWER_DOMAIN_AUX_D_TBT) | \
BIT_ULL(POWER_DOMAIN_AUX_E_TBT) | \
BIT_ULL(POWER_DOMAIN_AUX_F_TBT) | \
BIT_ULL(POWER_DOMAIN_AUX_G_TBT) | \
BIT_ULL(POWER_DOMAIN_AUX_H_TBT) | \
BIT_ULL(POWER_DOMAIN_AUX_I_TBT) | \
BIT_ULL(POWER_DOMAIN_VGA) | \
BIT_ULL(POWER_DOMAIN_AUDIO) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define TGL_PW_2_POWER_DOMAINS ( \
TGL_PW_3_POWER_DOMAINS | \
BIT_ULL(POWER_DOMAIN_TRANSCODER_VDSC_PW2) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define TGL_DISPLAY_DC_OFF_POWER_DOMAINS ( \
TGL_PW_2_POWER_DOMAINS | \
BIT_ULL(POWER_DOMAIN_MODESET) | \
BIT_ULL(POWER_DOMAIN_AUX_A) | \
BIT_ULL(POWER_DOMAIN_AUX_B) | \
BIT_ULL(POWER_DOMAIN_AUX_C) | \
BIT_ULL(POWER_DOMAIN_INIT))
#define TGL_DDI_IO_D_TC1_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_D_IO))
#define TGL_DDI_IO_E_TC2_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_E_IO))
#define TGL_DDI_IO_F_TC3_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_F_IO))
#define TGL_DDI_IO_G_TC4_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_G_IO))
#define TGL_DDI_IO_H_TC5_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_H_IO))
#define TGL_DDI_IO_I_TC6_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_PORT_DDI_I_IO))
#define TGL_AUX_A_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_IO_A) | \
BIT_ULL(POWER_DOMAIN_AUX_A))
#define TGL_AUX_B_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_B))
#define TGL_AUX_C_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_C))
#define TGL_AUX_D_TC1_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_D))
#define TGL_AUX_E_TC2_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_E))
#define TGL_AUX_F_TC3_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_F))
#define TGL_AUX_G_TC4_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_G))
#define TGL_AUX_H_TC5_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_H))
#define TGL_AUX_I_TC6_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_I))
#define TGL_AUX_D_TBT1_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_D_TBT))
#define TGL_AUX_E_TBT2_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_E_TBT))
#define TGL_AUX_F_TBT3_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_F_TBT))
#define TGL_AUX_G_TBT4_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_G_TBT))
#define TGL_AUX_H_TBT5_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_H_TBT))
#define TGL_AUX_I_TBT6_IO_POWER_DOMAINS ( \
BIT_ULL(POWER_DOMAIN_AUX_I_TBT))
static const struct i915_power_well_ops i9xx_always_on_power_well_ops = {
.sync_hw = i9xx_power_well_sync_hw_noop,
.enable = i9xx_always_on_power_well_noop,
.disable = i9xx_always_on_power_well_noop,
.is_enabled = i9xx_always_on_power_well_enabled,
};
static const struct i915_power_well_ops chv_pipe_power_well_ops = {
.sync_hw = i9xx_power_well_sync_hw_noop,
.enable = chv_pipe_power_well_enable,
.disable = chv_pipe_power_well_disable,
.is_enabled = chv_pipe_power_well_enabled,
};
static const struct i915_power_well_ops chv_dpio_cmn_power_well_ops = {
.sync_hw = i9xx_power_well_sync_hw_noop,
.enable = chv_dpio_cmn_power_well_enable,
.disable = chv_dpio_cmn_power_well_disable,
.is_enabled = vlv_power_well_enabled,
};
static const struct i915_power_well_desc i9xx_always_on_power_well[] = {
{
.name = "always-on",
.always_on = true,
.domains = POWER_DOMAIN_MASK,
.ops = &i9xx_always_on_power_well_ops,
.id = DISP_PW_ID_NONE,
},
};
static const struct i915_power_well_ops i830_pipes_power_well_ops = {
.sync_hw = i830_pipes_power_well_sync_hw,
.enable = i830_pipes_power_well_enable,
.disable = i830_pipes_power_well_disable,
.is_enabled = i830_pipes_power_well_enabled,
};
static const struct i915_power_well_desc i830_power_wells[] = {
{
.name = "always-on",
.always_on = true,
.domains = POWER_DOMAIN_MASK,
.ops = &i9xx_always_on_power_well_ops,
.id = DISP_PW_ID_NONE,
},
{
.name = "pipes",
.domains = I830_PIPES_POWER_DOMAINS,
.ops = &i830_pipes_power_well_ops,
.id = DISP_PW_ID_NONE,
},
};
static const struct i915_power_well_ops hsw_power_well_ops = {
.sync_hw = hsw_power_well_sync_hw,
.enable = hsw_power_well_enable,
.disable = hsw_power_well_disable,
.is_enabled = hsw_power_well_enabled,
};
static const struct i915_power_well_ops gen9_dc_off_power_well_ops = {
.sync_hw = i9xx_power_well_sync_hw_noop,
.enable = gen9_dc_off_power_well_enable,
.disable = gen9_dc_off_power_well_disable,
.is_enabled = gen9_dc_off_power_well_enabled,
};
static const struct i915_power_well_ops bxt_dpio_cmn_power_well_ops = {
.sync_hw = i9xx_power_well_sync_hw_noop,
.enable = bxt_dpio_cmn_power_well_enable,
.disable = bxt_dpio_cmn_power_well_disable,
.is_enabled = bxt_dpio_cmn_power_well_enabled,
};
static const struct i915_power_well_regs hsw_power_well_regs = {
.bios = HSW_PWR_WELL_CTL1,
.driver = HSW_PWR_WELL_CTL2,
.kvmr = HSW_PWR_WELL_CTL3,
.debug = HSW_PWR_WELL_CTL4,
};
static const struct i915_power_well_desc hsw_power_wells[] = {
{
.name = "always-on",
.always_on = true,
.domains = POWER_DOMAIN_MASK,
.ops = &i9xx_always_on_power_well_ops,
.id = DISP_PW_ID_NONE,
},
{
.name = "display",
.domains = HSW_DISPLAY_POWER_DOMAINS,
.ops = &hsw_power_well_ops,
.id = HSW_DISP_PW_GLOBAL,
{
.hsw.regs = &hsw_power_well_regs,
.hsw.idx = HSW_PW_CTL_IDX_GLOBAL,
.hsw.has_vga = true,
},
},
};
static const struct i915_power_well_desc bdw_power_wells[] = {
{
.name = "always-on",
.always_on = true,
.domains = POWER_DOMAIN_MASK,
.ops = &i9xx_always_on_power_well_ops,
.id = DISP_PW_ID_NONE,
},
{
.name = "display",
.domains = BDW_DISPLAY_POWER_DOMAINS,
.ops = &hsw_power_well_ops,
.id = HSW_DISP_PW_GLOBAL,
{
.hsw.regs = &hsw_power_well_regs,
.hsw.idx = HSW_PW_CTL_IDX_GLOBAL,
.hsw.irq_pipe_mask = BIT(PIPE_B