[Intel-gfx] [PATCH 17/42] drm/i915/xe2lpd: D2D Enable preserve bits in DDI_BUF_CTL
Lucas De Marchi
lucas.demarchi at intel.com
Wed Aug 23 17:07:15 UTC 2023
From: Clint Taylor <clinton.a.taylor at intel.com>
Display Ver 20 moved the D2D Enable bit to DDI_BUF_CTL(DDI_CTL_DE)
register. We used multiple variables for HDMI and DisplayPort copies of
this register. Consolidate the various locations to use
intel_digital_port saved_port_bits.
Cc: Anusha Srivatsa <anusha.srivatsa at intel.com>
Cc: Gustavo Sousa <gustavo.sousa at intel.com>
Cc: Radhakrishna Sripada <radhakrishna.sripada at intel.com>
Signed-off-by: Clint Taylor <clinton.a.taylor at intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
---
drivers/gpu/drm/i915/display/intel_ddi.c | 40 +++++++++++++-----------
drivers/gpu/drm/i915/display/intel_dp.c | 2 +-
2 files changed, 22 insertions(+), 20 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index a9440c0ecf61..3147ed174d83 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -324,26 +324,25 @@ static void intel_ddi_init_dp_buf_reg(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *i915 = to_i915(encoder->base.dev);
- struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
enum phy phy = intel_port_to_phy(i915, encoder->port);
/* DDI_BUF_CTL_ENABLE will be set by intel_ddi_prepare_link_retrain() later */
- intel_dp->DP = dig_port->saved_port_bits |
+ dig_port->saved_port_bits |=
DDI_PORT_WIDTH(crtc_state->lane_count) |
DDI_BUF_TRANS_SELECT(0);
if (DISPLAY_VER(i915) >= 14) {
if (intel_dp_is_uhbr(crtc_state))
- intel_dp->DP |= DDI_BUF_PORT_DATA_40BIT;
+ dig_port->saved_port_bits |= DDI_BUF_PORT_DATA_40BIT;
else
- intel_dp->DP |= DDI_BUF_PORT_DATA_10BIT;
+ dig_port->saved_port_bits |= DDI_BUF_PORT_DATA_10BIT;
}
if (IS_ALDERLAKE_P(i915) && intel_phy_is_tc(i915, phy)) {
- intel_dp->DP |= ddi_buf_phy_link_rate(crtc_state->port_clock);
+ dig_port->saved_port_bits |= ddi_buf_phy_link_rate(crtc_state->port_clock);
if (!intel_tc_port_in_tbt_alt_mode(dig_port))
- intel_dp->DP |= DDI_BUF_CTL_TC_PHY_OWNERSHIP;
+ dig_port->saved_port_bits |= DDI_BUF_CTL_TC_PHY_OWNERSHIP;
}
}
@@ -1449,7 +1448,7 @@ hsw_set_signal_levels(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
- struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+ struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
int level = intel_ddi_level(encoder, crtc_state, 0);
enum port port = encoder->port;
u32 signal_levels;
@@ -1466,10 +1465,10 @@ hsw_set_signal_levels(struct intel_encoder *encoder,
drm_dbg_kms(&dev_priv->drm, "Using signal levels %08x\n",
signal_levels);
- intel_dp->DP &= ~DDI_BUF_EMP_MASK;
- intel_dp->DP |= signal_levels;
+ dig_port->saved_port_bits &= ~DDI_BUF_EMP_MASK;
+ dig_port->saved_port_bits |= signal_levels;
- intel_de_write(dev_priv, DDI_BUF_CTL(port), intel_dp->DP);
+ intel_de_write(dev_priv, DDI_BUF_CTL(port), dig_port->saved_port_bits);
intel_de_posting_read(dev_priv, DDI_BUF_CTL(port));
}
@@ -2355,6 +2354,7 @@ static void
mtl_ddi_enable_d2d(struct intel_encoder *encoder)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+ struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
enum port port = encoder->port;
i915_reg_t reg;
u32 set_bits, wait_bits;
@@ -2362,6 +2362,7 @@ mtl_ddi_enable_d2d(struct intel_encoder *encoder)
if (DISPLAY_VER(dev_priv) >= 20) {
reg = DDI_BUF_CTL(port);
set_bits = XE2LPD_DDI_BUF_D2D_LINK_ENABLE;
+ dig_port->saved_port_bits |= XE2LPD_DDI_BUF_D2D_LINK_ENABLE;
wait_bits = XE2LPD_DDI_BUF_D2D_LINK_STATE;
} else {
reg = XELPDP_PORT_BUF_CTL1(port);
@@ -2817,6 +2818,7 @@ static void
mtl_ddi_disable_d2d_link(struct intel_encoder *encoder)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+ struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
enum port port = encoder->port;
i915_reg_t reg;
u32 clr_bits, wait_bits;
@@ -2824,6 +2826,7 @@ mtl_ddi_disable_d2d_link(struct intel_encoder *encoder)
if (DISPLAY_VER(dev_priv) >= 20) {
reg = DDI_BUF_CTL(port);
clr_bits = XE2LPD_DDI_BUF_D2D_LINK_ENABLE;
+ dig_port->saved_port_bits &= ~XE2LPD_DDI_BUF_D2D_LINK_ENABLE;
wait_bits = XE2LPD_DDI_BUF_D2D_LINK_STATE;
} else {
reg = XELPDP_PORT_BUF_CTL1(port);
@@ -3162,7 +3165,6 @@ static void intel_enable_ddi_hdmi(struct intel_atomic_state *state,
struct drm_connector *connector = conn_state->connector;
enum port port = encoder->port;
enum phy phy = intel_port_to_phy(dev_priv, port);
- u32 buf_ctl;
if (!intel_hdmi_handle_sink_scrambling(encoder, connector,
crtc_state->hdmi_high_tmds_clock_ratio,
@@ -3228,7 +3230,7 @@ static void intel_enable_ddi_hdmi(struct intel_atomic_state *state,
* is filled with lane count, already set in the crtc_state.
* The same is required to be filled in PORT_BUF_CTL for C10/20 Phy.
*/
- buf_ctl = dig_port->saved_port_bits | DDI_BUF_CTL_ENABLE;
+ dig_port->saved_port_bits |= DDI_BUF_CTL_ENABLE;
if (DISPLAY_VER(dev_priv) >= 14) {
u8 lane_count = mtl_get_port_width(crtc_state->lane_count);
u32 port_buf = 0;
@@ -3241,13 +3243,13 @@ static void intel_enable_ddi_hdmi(struct intel_atomic_state *state,
intel_de_rmw(dev_priv, XELPDP_PORT_BUF_CTL1(port),
XELPDP_PORT_WIDTH_MASK | XELPDP_PORT_REVERSAL, port_buf);
- buf_ctl |= DDI_PORT_WIDTH(lane_count);
+ dig_port->saved_port_bits |= DDI_PORT_WIDTH(lane_count);
} else if (IS_ALDERLAKE_P(dev_priv) && intel_phy_is_tc(dev_priv, phy)) {
drm_WARN_ON(&dev_priv->drm, !intel_tc_port_in_legacy_mode(dig_port));
- buf_ctl |= DDI_BUF_CTL_TC_PHY_OWNERSHIP;
+ dig_port->saved_port_bits |= DDI_BUF_CTL_TC_PHY_OWNERSHIP;
}
- intel_de_write(dev_priv, DDI_BUF_CTL(port), buf_ctl);
+ intel_de_write(dev_priv, DDI_BUF_CTL(port), dig_port->saved_port_bits);
intel_wait_ddi_buf_active(dev_priv, port);
@@ -3465,8 +3467,8 @@ static void mtl_ddi_prepare_link_retrain(struct intel_dp *intel_dp,
mtl_port_buf_ctl_program(encoder, crtc_state);
/* 6.i Configure and enable DDI_CTL_DE to start sending valid data to port slice */
- intel_dp->DP |= DDI_BUF_CTL_ENABLE;
- intel_de_write(dev_priv, DDI_BUF_CTL(port), intel_dp->DP);
+ dig_port->saved_port_bits |= DDI_BUF_CTL_ENABLE;
+ intel_de_write(dev_priv, DDI_BUF_CTL(port), dig_port->saved_port_bits);
intel_de_posting_read(dev_priv, DDI_BUF_CTL(port));
/* 6.j Poll for PORT_BUF_CTL Idle Status == 0, timeout after 100 us */
@@ -3516,8 +3518,8 @@ static void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp,
(intel_tc_port_in_dp_alt_mode(dig_port) || intel_tc_port_in_legacy_mode(dig_port)))
adlp_tbt_to_dp_alt_switch_wa(encoder);
- intel_dp->DP |= DDI_BUF_CTL_ENABLE;
- intel_de_write(dev_priv, DDI_BUF_CTL(port), intel_dp->DP);
+ dig_port->saved_port_bits |= DDI_BUF_CTL_ENABLE;
+ intel_de_write(dev_priv, DDI_BUF_CTL(port), dig_port->saved_port_bits);
intel_de_posting_read(dev_priv, DDI_BUF_CTL(port));
intel_wait_ddi_buf_active(dev_priv, port);
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 84584864511b..334789be0054 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -5631,7 +5631,7 @@ intel_dp_init_connector(struct intel_digital_port *dig_port,
intel_dp->pps.active_pipe = INVALID_PIPE;
/* Preserve the current hw state. */
- intel_dp->DP = intel_de_read(dev_priv, intel_dp->output_reg);
+ dig_port->saved_port_bits = intel_de_read(dev_priv, intel_dp->output_reg);
intel_dp->attached_connector = intel_connector;
if (_intel_dp_is_port_edp(dev_priv, intel_encoder->devdata, port)) {
--
2.40.1
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