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OpenCloudOS-Kernel/drivers/gpu/drm/i915/display/g4x_hdmi.c

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// SPDX-License-Identifier: MIT
/*
* Copyright © 2020 Intel Corporation
*
* HDMI support for G4x,ILK,SNB,IVB,VLV,CHV (HSW+ handled by the DDI code).
*/
#include "g4x_hdmi.h"
#include "intel_audio.h"
#include "intel_connector.h"
#include "intel_de.h"
#include "intel_display_types.h"
#include "intel_dpio_phy.h"
#include "intel_fifo_underrun.h"
#include "intel_hdmi.h"
#include "intel_hotplug.h"
#include "intel_sdvo.h"
#include "vlv_sideband.h"
static void intel_hdmi_prepare(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state)
{
struct drm_device *dev = encoder->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
const struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode;
u32 hdmi_val;
intel_dp_dual_mode_set_tmds_output(intel_hdmi, true);
hdmi_val = SDVO_ENCODING_HDMI;
if (!HAS_PCH_SPLIT(dev_priv) && crtc_state->limited_color_range)
hdmi_val |= HDMI_COLOR_RANGE_16_235;
if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
hdmi_val |= SDVO_VSYNC_ACTIVE_HIGH;
if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
hdmi_val |= SDVO_HSYNC_ACTIVE_HIGH;
if (crtc_state->pipe_bpp > 24)
hdmi_val |= HDMI_COLOR_FORMAT_12bpc;
else
hdmi_val |= SDVO_COLOR_FORMAT_8bpc;
if (crtc_state->has_hdmi_sink)
hdmi_val |= HDMI_MODE_SELECT_HDMI;
if (HAS_PCH_CPT(dev_priv))
hdmi_val |= SDVO_PIPE_SEL_CPT(crtc->pipe);
else if (IS_CHERRYVIEW(dev_priv))
hdmi_val |= SDVO_PIPE_SEL_CHV(crtc->pipe);
else
hdmi_val |= SDVO_PIPE_SEL(crtc->pipe);
intel_de_write(dev_priv, intel_hdmi->hdmi_reg, hdmi_val);
intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
}
static bool intel_hdmi_get_hw_state(struct intel_encoder *encoder,
enum pipe *pipe)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
intel_wakeref_t wakeref;
bool ret;
wakeref = intel_display_power_get_if_enabled(dev_priv,
encoder->power_domain);
if (!wakeref)
return false;
ret = intel_sdvo_port_enabled(dev_priv, intel_hdmi->hdmi_reg, pipe);
intel_display_power_put(dev_priv, encoder->power_domain, wakeref);
return ret;
}
static void intel_hdmi_get_config(struct intel_encoder *encoder,
struct intel_crtc_state *pipe_config)
{
struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
struct drm_device *dev = encoder->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
u32 tmp, flags = 0;
int dotclock;
pipe_config->output_types |= BIT(INTEL_OUTPUT_HDMI);
tmp = intel_de_read(dev_priv, intel_hdmi->hdmi_reg);
if (tmp & SDVO_HSYNC_ACTIVE_HIGH)
flags |= DRM_MODE_FLAG_PHSYNC;
else
flags |= DRM_MODE_FLAG_NHSYNC;
if (tmp & SDVO_VSYNC_ACTIVE_HIGH)
flags |= DRM_MODE_FLAG_PVSYNC;
else
flags |= DRM_MODE_FLAG_NVSYNC;
if (tmp & HDMI_MODE_SELECT_HDMI)
pipe_config->has_hdmi_sink = true;
pipe_config->infoframes.enable |=
intel_hdmi_infoframes_enabled(encoder, pipe_config);
if (pipe_config->infoframes.enable)
pipe_config->has_infoframe = true;
if (tmp & HDMI_AUDIO_ENABLE)
pipe_config->has_audio = true;
if (!HAS_PCH_SPLIT(dev_priv) &&
tmp & HDMI_COLOR_RANGE_16_235)
pipe_config->limited_color_range = true;
pipe_config->hw.adjusted_mode.flags |= flags;
if ((tmp & SDVO_COLOR_FORMAT_MASK) == HDMI_COLOR_FORMAT_12bpc)
dotclock = pipe_config->port_clock * 2 / 3;
else
dotclock = pipe_config->port_clock;
if (pipe_config->pixel_multiplier)
dotclock /= pipe_config->pixel_multiplier;
pipe_config->hw.adjusted_mode.crtc_clock = dotclock;
pipe_config->lane_count = 4;
intel_hdmi_read_gcp_infoframe(encoder, pipe_config);
intel_read_infoframe(encoder, pipe_config,
HDMI_INFOFRAME_TYPE_AVI,
&pipe_config->infoframes.avi);
intel_read_infoframe(encoder, pipe_config,
HDMI_INFOFRAME_TYPE_SPD,
&pipe_config->infoframes.spd);
intel_read_infoframe(encoder, pipe_config,
HDMI_INFOFRAME_TYPE_VENDOR,
&pipe_config->infoframes.hdmi);
}
static void intel_enable_hdmi_audio(struct intel_encoder *encoder,
const struct intel_crtc_state *pipe_config,
const struct drm_connector_state *conn_state)
{
struct drm_i915_private *i915 = to_i915(encoder->base.dev);
struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
drm_WARN_ON(&i915->drm, !pipe_config->has_hdmi_sink);
drm_dbg_kms(&i915->drm, "Enabling HDMI audio on pipe %c\n",
pipe_name(crtc->pipe));
intel_audio_codec_enable(encoder, pipe_config, conn_state);
}
static void g4x_enable_hdmi(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *pipe_config,
const struct drm_connector_state *conn_state)
{
struct drm_device *dev = encoder->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
u32 temp;
temp = intel_de_read(dev_priv, intel_hdmi->hdmi_reg);
temp |= SDVO_ENABLE;
if (pipe_config->has_audio)
temp |= HDMI_AUDIO_ENABLE;
intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
if (pipe_config->has_audio)
intel_enable_hdmi_audio(encoder, pipe_config, conn_state);
}
static void ibx_enable_hdmi(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *pipe_config,
const struct drm_connector_state *conn_state)
{
struct drm_device *dev = encoder->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
u32 temp;
temp = intel_de_read(dev_priv, intel_hdmi->hdmi_reg);
temp |= SDVO_ENABLE;
if (pipe_config->has_audio)
temp |= HDMI_AUDIO_ENABLE;
/*
* HW workaround, need to write this twice for issue
* that may result in first write getting masked.
*/
intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
/*
* HW workaround, need to toggle enable bit off and on
* for 12bpc with pixel repeat.
*
* FIXME: BSpec says this should be done at the end of
* the modeset sequence, so not sure if this isn't too soon.
*/
if (pipe_config->pipe_bpp > 24 &&
pipe_config->pixel_multiplier > 1) {
intel_de_write(dev_priv, intel_hdmi->hdmi_reg,
temp & ~SDVO_ENABLE);
intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
/*
* HW workaround, need to write this twice for issue
* that may result in first write getting masked.
*/
intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
}
if (pipe_config->has_audio)
intel_enable_hdmi_audio(encoder, pipe_config, conn_state);
}
static void cpt_enable_hdmi(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *pipe_config,
const struct drm_connector_state *conn_state)
{
struct drm_device *dev = encoder->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
enum pipe pipe = crtc->pipe;
u32 temp;
temp = intel_de_read(dev_priv, intel_hdmi->hdmi_reg);
temp |= SDVO_ENABLE;
if (pipe_config->has_audio)
temp |= HDMI_AUDIO_ENABLE;
/*
* WaEnableHDMI8bpcBefore12bpc:snb,ivb
*
* The procedure for 12bpc is as follows:
* 1. disable HDMI clock gating
* 2. enable HDMI with 8bpc
* 3. enable HDMI with 12bpc
* 4. enable HDMI clock gating
*/
if (pipe_config->pipe_bpp > 24) {
intel_de_write(dev_priv, TRANS_CHICKEN1(pipe),
intel_de_read(dev_priv, TRANS_CHICKEN1(pipe)) | TRANS_CHICKEN1_HDMIUNIT_GC_DISABLE);
temp &= ~SDVO_COLOR_FORMAT_MASK;
temp |= SDVO_COLOR_FORMAT_8bpc;
}
intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
if (pipe_config->pipe_bpp > 24) {
temp &= ~SDVO_COLOR_FORMAT_MASK;
temp |= HDMI_COLOR_FORMAT_12bpc;
intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
intel_de_write(dev_priv, TRANS_CHICKEN1(pipe),
intel_de_read(dev_priv, TRANS_CHICKEN1(pipe)) & ~TRANS_CHICKEN1_HDMIUNIT_GC_DISABLE);
}
if (pipe_config->has_audio)
intel_enable_hdmi_audio(encoder, pipe_config, conn_state);
}
static void vlv_enable_hdmi(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *pipe_config,
const struct drm_connector_state *conn_state)
{
}
static void intel_disable_hdmi(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *old_crtc_state,
const struct drm_connector_state *old_conn_state)
{
struct drm_device *dev = encoder->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
struct intel_digital_port *dig_port =
hdmi_to_dig_port(intel_hdmi);
struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
u32 temp;
temp = intel_de_read(dev_priv, intel_hdmi->hdmi_reg);
temp &= ~(SDVO_ENABLE | HDMI_AUDIO_ENABLE);
intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
/*
* HW workaround for IBX, we need to move the port
* to transcoder A after disabling it to allow the
* matching DP port to be enabled on transcoder A.
*/
if (HAS_PCH_IBX(dev_priv) && crtc->pipe == PIPE_B) {
/*
* We get CPU/PCH FIFO underruns on the other pipe when
* doing the workaround. Sweep them under the rug.
*/
intel_set_cpu_fifo_underrun_reporting(dev_priv, PIPE_A, false);
intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, false);
temp &= ~SDVO_PIPE_SEL_MASK;
temp |= SDVO_ENABLE | SDVO_PIPE_SEL(PIPE_A);
/*
* HW workaround, need to write this twice for issue
* that may result in first write getting masked.
*/
intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
temp &= ~SDVO_ENABLE;
intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
intel_wait_for_vblank_if_active(dev_priv, PIPE_A);
intel_set_cpu_fifo_underrun_reporting(dev_priv, PIPE_A, true);
intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, true);
}
dig_port->set_infoframes(encoder,
false,
old_crtc_state, old_conn_state);
intel_dp_dual_mode_set_tmds_output(intel_hdmi, false);
}
static void g4x_disable_hdmi(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *old_crtc_state,
const struct drm_connector_state *old_conn_state)
{
if (old_crtc_state->has_audio)
intel_audio_codec_disable(encoder,
old_crtc_state, old_conn_state);
intel_disable_hdmi(state, encoder, old_crtc_state, old_conn_state);
}
static void pch_disable_hdmi(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *old_crtc_state,
const struct drm_connector_state *old_conn_state)
{
if (old_crtc_state->has_audio)
intel_audio_codec_disable(encoder,
old_crtc_state, old_conn_state);
}
static void pch_post_disable_hdmi(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *old_crtc_state,
const struct drm_connector_state *old_conn_state)
{
intel_disable_hdmi(state, encoder, old_crtc_state, old_conn_state);
}
static void intel_hdmi_pre_enable(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *pipe_config,
const struct drm_connector_state *conn_state)
{
struct intel_digital_port *dig_port =
enc_to_dig_port(encoder);
intel_hdmi_prepare(encoder, pipe_config);
dig_port->set_infoframes(encoder,
pipe_config->has_infoframe,
pipe_config, conn_state);
}
static void vlv_hdmi_pre_enable(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *pipe_config,
const struct drm_connector_state *conn_state)
{
struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
vlv_phy_pre_encoder_enable(encoder, pipe_config);
/* HDMI 1.0V-2dB */
vlv_set_phy_signal_level(encoder, pipe_config,
0x2b245f5f, 0x00002000,
0x5578b83a, 0x2b247878);
dig_port->set_infoframes(encoder,
pipe_config->has_infoframe,
pipe_config, conn_state);
g4x_enable_hdmi(state, encoder, pipe_config, conn_state);
vlv_wait_port_ready(dev_priv, dig_port, 0x0);
}
static void vlv_hdmi_pre_pll_enable(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *pipe_config,
const struct drm_connector_state *conn_state)
{
intel_hdmi_prepare(encoder, pipe_config);
vlv_phy_pre_pll_enable(encoder, pipe_config);
}
static void chv_hdmi_pre_pll_enable(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *pipe_config,
const struct drm_connector_state *conn_state)
{
intel_hdmi_prepare(encoder, pipe_config);
chv_phy_pre_pll_enable(encoder, pipe_config);
}
static void chv_hdmi_post_pll_disable(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *old_crtc_state,
const struct drm_connector_state *old_conn_state)
{
chv_phy_post_pll_disable(encoder, old_crtc_state);
}
static void vlv_hdmi_post_disable(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *old_crtc_state,
const struct drm_connector_state *old_conn_state)
{
/* Reset lanes to avoid HDMI flicker (VLV w/a) */
vlv_phy_reset_lanes(encoder, old_crtc_state);
}
static void chv_hdmi_post_disable(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *old_crtc_state,
const struct drm_connector_state *old_conn_state)
{
struct drm_device *dev = encoder->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
vlv_dpio_get(dev_priv);
/* Assert data lane reset */
chv_data_lane_soft_reset(encoder, old_crtc_state, true);
vlv_dpio_put(dev_priv);
}
static void chv_hdmi_pre_enable(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *pipe_config,
const struct drm_connector_state *conn_state)
{
struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
struct drm_device *dev = encoder->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
chv_phy_pre_encoder_enable(encoder, pipe_config);
/* FIXME: Program the support xxx V-dB */
/* Use 800mV-0dB */
chv_set_phy_signal_level(encoder, pipe_config, 128, 102, false);
dig_port->set_infoframes(encoder,
pipe_config->has_infoframe,
pipe_config, conn_state);
g4x_enable_hdmi(state, encoder, pipe_config, conn_state);
vlv_wait_port_ready(dev_priv, dig_port, 0x0);
/* Second common lane will stay alive on its own now */
chv_phy_release_cl2_override(encoder);
}
static const struct drm_encoder_funcs intel_hdmi_enc_funcs = {
.destroy = intel_encoder_destroy,
};
static enum intel_hotplug_state
intel_hdmi_hotplug(struct intel_encoder *encoder,
struct intel_connector *connector)
{
enum intel_hotplug_state state;
state = intel_encoder_hotplug(encoder, connector);
/*
* On many platforms the HDMI live state signal is known to be
* unreliable, so we can't use it to detect if a sink is connected or
* not. Instead we detect if it's connected based on whether we can
* read the EDID or not. That in turn has a problem during disconnect,
* since the HPD interrupt may be raised before the DDC lines get
* disconnected (due to how the required length of DDC vs. HPD
* connector pins are specified) and so we'll still be able to get a
* valid EDID. To solve this schedule another detection cycle if this
* time around we didn't detect any change in the sink's connection
* status.
*/
if (state == INTEL_HOTPLUG_UNCHANGED && !connector->hotplug_retries)
state = INTEL_HOTPLUG_RETRY;
return state;
}
void g4x_hdmi_init(struct drm_i915_private *dev_priv,
i915_reg_t hdmi_reg, enum port port)
{
struct intel_digital_port *dig_port;
struct intel_encoder *intel_encoder;
struct intel_connector *intel_connector;
dig_port = kzalloc(sizeof(*dig_port), GFP_KERNEL);
if (!dig_port)
return;
intel_connector = intel_connector_alloc();
if (!intel_connector) {
kfree(dig_port);
return;
}
intel_encoder = &dig_port->base;
mutex_init(&dig_port->hdcp_mutex);
drm_encoder_init(&dev_priv->drm, &intel_encoder->base,
&intel_hdmi_enc_funcs, DRM_MODE_ENCODER_TMDS,
"HDMI %c", port_name(port));
intel_encoder->hotplug = intel_hdmi_hotplug;
intel_encoder->compute_config = intel_hdmi_compute_config;
if (HAS_PCH_SPLIT(dev_priv)) {
intel_encoder->disable = pch_disable_hdmi;
intel_encoder->post_disable = pch_post_disable_hdmi;
} else {
intel_encoder->disable = g4x_disable_hdmi;
}
intel_encoder->get_hw_state = intel_hdmi_get_hw_state;
intel_encoder->get_config = intel_hdmi_get_config;
if (IS_CHERRYVIEW(dev_priv)) {
intel_encoder->pre_pll_enable = chv_hdmi_pre_pll_enable;
intel_encoder->pre_enable = chv_hdmi_pre_enable;
intel_encoder->enable = vlv_enable_hdmi;
intel_encoder->post_disable = chv_hdmi_post_disable;
intel_encoder->post_pll_disable = chv_hdmi_post_pll_disable;
} else if (IS_VALLEYVIEW(dev_priv)) {
intel_encoder->pre_pll_enable = vlv_hdmi_pre_pll_enable;
intel_encoder->pre_enable = vlv_hdmi_pre_enable;
intel_encoder->enable = vlv_enable_hdmi;
intel_encoder->post_disable = vlv_hdmi_post_disable;
} else {
intel_encoder->pre_enable = intel_hdmi_pre_enable;
if (HAS_PCH_CPT(dev_priv))
intel_encoder->enable = cpt_enable_hdmi;
else if (HAS_PCH_IBX(dev_priv))
intel_encoder->enable = ibx_enable_hdmi;
else
intel_encoder->enable = g4x_enable_hdmi;
}
intel_encoder->type = INTEL_OUTPUT_HDMI;
intel_encoder->power_domain = intel_port_to_power_domain(port);
intel_encoder->port = port;
if (IS_CHERRYVIEW(dev_priv)) {
if (port == PORT_D)
intel_encoder->pipe_mask = BIT(PIPE_C);
else
intel_encoder->pipe_mask = BIT(PIPE_A) | BIT(PIPE_B);
} else {
intel_encoder->pipe_mask = ~0;
}
intel_encoder->cloneable = 1 << INTEL_OUTPUT_ANALOG;
intel_encoder->hpd_pin = intel_hpd_pin_default(dev_priv, port);
/*
* BSpec is unclear about HDMI+HDMI cloning on g4x, but it seems
* to work on real hardware. And since g4x can send infoframes to
* only one port anyway, nothing is lost by allowing it.
*/
if (IS_G4X(dev_priv))
intel_encoder->cloneable |= 1 << INTEL_OUTPUT_HDMI;
dig_port->hdmi.hdmi_reg = hdmi_reg;
dig_port->dp.output_reg = INVALID_MMIO_REG;
dig_port->max_lanes = 4;
intel_infoframe_init(dig_port);
dig_port->aux_ch = intel_bios_port_aux_ch(dev_priv, port);
intel_hdmi_init_connector(dig_port, intel_connector);
}
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