#include "intel_connector.h"
#include "intel_crtc.h"
#include "intel_cx0_phy.h"
+#include "intel_cx0_phy_regs.h"
#include "intel_ddi.h"
#include "intel_ddi_buf_trans.h"
#include "intel_de.h"
trans->entries[level].hsw.trans2);
}
+static void mtl_wait_ddi_buf_idle(struct drm_i915_private *i915, enum port port)
+{
+ int ret;
+
+ /* FIXME: find out why Bspec's 100us timeout is too short */
+ ret = wait_for_us((intel_de_read(i915, XELPDP_PORT_BUF_CTL1(port)) &
+ XELPDP_PORT_BUF_PHY_IDLE), 10000);
+ if (ret)
+ drm_err(&i915->drm, "Timeout waiting for DDI BUF %c to get idle\n",
+ port_name(port));
+}
+
void intel_wait_ddi_buf_idle(struct drm_i915_private *dev_priv,
enum port port)
{
return;
}
- if (IS_DG2(dev_priv)) {
+ if (DISPLAY_VER(dev_priv) >= 14) {
+ timeout_us = 10000;
+ } else if (IS_DG2(dev_priv)) {
timeout_us = 1200;
} else if (DISPLAY_VER(dev_priv) >= 12) {
if (intel_phy_is_tc(dev_priv, phy))
timeout_us = 500;
}
- ret = _wait_for(!(intel_de_read(dev_priv, DDI_BUF_CTL(port)) &
- DDI_BUF_IS_IDLE), timeout_us, 10, 10);
+ if (DISPLAY_VER(dev_priv) >= 14)
+ ret = _wait_for(!(intel_de_read(dev_priv, XELPDP_PORT_BUF_CTL1(port)) & XELPDP_PORT_BUF_PHY_IDLE),
+ timeout_us, 10, 10);
+ else
+ ret = _wait_for(!(intel_de_read(dev_priv, DDI_BUF_CTL(port)) & DDI_BUF_IS_IDLE),
+ timeout_us, 10, 10);
if (ret)
drm_err(&dev_priv->drm, "Timeout waiting for DDI BUF %c to get active\n",
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;
+ else
+ intel_dp->DP |= 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);
if (!intel_tc_port_in_tbt_alt_mode(dig_port))
OVERLAP_PIXELS_MASK, dss1);
}
+static u8 mtl_get_port_width(u8 lane_count)
+{
+ switch (lane_count) {
+ case 1:
+ return 0;
+ case 2:
+ return 1;
+ case 3:
+ return 4;
+ case 4:
+ return 3;
+ default:
+ MISSING_CASE(lane_count);
+ return 4;
+ }
+}
+
+static void
+mtl_ddi_enable_d2d(struct intel_encoder *encoder)
+{
+ struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+ enum port port = encoder->port;
+
+ intel_de_rmw(dev_priv, XELPDP_PORT_BUF_CTL1(port), 0,
+ XELPDP_PORT_BUF_D2D_LINK_ENABLE);
+
+ if (wait_for_us((intel_de_read(dev_priv, XELPDP_PORT_BUF_CTL1(port)) &
+ XELPDP_PORT_BUF_D2D_LINK_STATE), 100)) {
+ drm_err(&dev_priv->drm, "Timeout waiting for D2D Link enable for PORT_BUF_CTL %c\n",
+ port_name(port));
+ }
+}
+
+static void mtl_port_buf_ctl_program(struct intel_encoder *encoder,
+ const struct intel_crtc_state *crtc_state)
+{
+ struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+ struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+ enum port port = encoder->port;
+ u32 val;
+
+ val = intel_de_read(i915, XELPDP_PORT_BUF_CTL1(port));
+ val &= ~XELPDP_PORT_WIDTH_MASK;
+ val |= XELPDP_PORT_WIDTH(mtl_get_port_width(crtc_state->lane_count));
+
+ val &= ~XELPDP_PORT_BUF_PORT_DATA_WIDTH_MASK;
+ if (intel_dp_is_uhbr(crtc_state))
+ val |= XELPDP_PORT_BUF_PORT_DATA_40BIT;
+ else
+ val |= XELPDP_PORT_BUF_PORT_DATA_10BIT;
+
+ if (dig_port->saved_port_bits & DDI_BUF_PORT_REVERSAL)
+ val |= XELPDP_PORT_REVERSAL;
+
+ intel_de_write(i915, XELPDP_PORT_BUF_CTL1(port), val);
+}
+
+static void mtl_port_buf_ctl_io_selection(struct intel_encoder *encoder)
+{
+ struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+ struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+ u32 val;
+
+ val = intel_tc_port_in_tbt_alt_mode(dig_port) ?
+ XELPDP_PORT_BUF_IO_SELECT_TBT : 0;
+ intel_de_rmw(i915, XELPDP_PORT_BUF_CTL1(encoder->port),
+ XELPDP_PORT_BUF_IO_SELECT_TBT, val);
+}
+
+static void mtl_ddi_pre_enable_dp(struct intel_atomic_state *state,
+ struct intel_encoder *encoder,
+ const struct intel_crtc_state *crtc_state,
+ const struct drm_connector_state *conn_state)
+{
+ struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+ bool is_mst = intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST);
+
+ intel_dp_set_link_params(intel_dp,
+ crtc_state->port_clock,
+ crtc_state->lane_count);
+
+ /*
+ * We only configure what the register value will be here. Actual
+ * enabling happens during link training farther down.
+ */
+ intel_ddi_init_dp_buf_reg(encoder, crtc_state);
+
+ /*
+ * 1. Enable Power Wells
+ *
+ * This was handled at the beginning of intel_atomic_commit_tail(),
+ * before we called down into this function.
+ */
+
+ /* 2. PMdemand was already set */
+
+ /* 3. Select Thunderbolt */
+ mtl_port_buf_ctl_io_selection(encoder);
+
+ /* 4. Enable Panel Power if PPS is required */
+ intel_pps_on(intel_dp);
+
+ /* 5. Enable the port PLL */
+ intel_ddi_enable_clock(encoder, crtc_state);
+
+ /*
+ * 6.a Configure Transcoder Clock Select to direct the Port clock to the
+ * Transcoder.
+ */
+ intel_ddi_enable_transcoder_clock(encoder, crtc_state);
+
+ /*
+ * 6.b If DP v2.0/128b mode - Configure TRANS_DP2_CTL register settings.
+ */
+ intel_ddi_config_transcoder_dp2(encoder, crtc_state);
+
+ /*
+ * 6.c Configure TRANS_DDI_FUNC_CTL DDI Select, DDI Mode Select & MST
+ * Transport Select
+ */
+ intel_ddi_config_transcoder_func(encoder, crtc_state);
+
+ /*
+ * 6.e Program CoG/MSO configuration bits in DSS_CTL1 if selected.
+ */
+ intel_ddi_mso_configure(crtc_state);
+
+ if (!is_mst)
+ intel_dp_set_power(intel_dp, DP_SET_POWER_D0);
+
+ intel_dp_configure_protocol_converter(intel_dp, crtc_state);
+ intel_dp_sink_set_decompression_state(intel_dp, crtc_state, true);
+ /*
+ * DDI FEC: "anticipates enabling FEC encoding sets the FEC_READY bit
+ * in the FEC_CONFIGURATION register to 1 before initiating link
+ * training
+ */
+ intel_dp_sink_set_fec_ready(intel_dp, crtc_state);
+
+ intel_dp_check_frl_training(intel_dp);
+ intel_dp_pcon_dsc_configure(intel_dp, crtc_state);
+
+ /*
+ * 6. The rest of the below are substeps under the bspec's "Enable and
+ * Train Display Port" step. Note that steps that are specific to
+ * MST will be handled by intel_mst_pre_enable_dp() before/after it
+ * calls into this function. Also intel_mst_pre_enable_dp() only calls
+ * us when active_mst_links==0, so any steps designated for "single
+ * stream or multi-stream master transcoder" can just be performed
+ * unconditionally here.
+ *
+ * mtl_ddi_prepare_link_retrain() that is called by
+ * intel_dp_start_link_train() will execute steps: 6.d, 6.f, 6.g, 6.h,
+ * 6.i and 6.j
+ *
+ * 6.k Follow DisplayPort specification training sequence (see notes for
+ * failure handling)
+ * 6.m If DisplayPort multi-stream - Set DP_TP_CTL link training to Idle
+ * Pattern, wait for 5 idle patterns (DP_TP_STATUS Min_Idles_Sent)
+ * (timeout after 800 us)
+ */
+ intel_dp_start_link_train(intel_dp, crtc_state);
+
+ /* 6.n Set DP_TP_CTL link training to Normal */
+ if (!is_trans_port_sync_mode(crtc_state))
+ intel_dp_stop_link_train(intel_dp, crtc_state);
+
+ /* 6.o Configure and enable FEC if needed */
+ intel_ddi_enable_fec(encoder, crtc_state);
+
+ intel_dsc_dp_pps_write(encoder, crtc_state);
+}
+
static void tgl_ddi_pre_enable_dp(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state,
intel_dp_128b132b_sdp_crc16(enc_to_intel_dp(encoder),
crtc_state);
- if (DISPLAY_VER(dev_priv) >= 12)
+ if (DISPLAY_VER(dev_priv) >= 14)
+ mtl_ddi_pre_enable_dp(state, encoder, crtc_state, conn_state);
+ else if (DISPLAY_VER(dev_priv) >= 12)
tgl_ddi_pre_enable_dp(state, encoder, crtc_state, conn_state);
else
hsw_ddi_pre_enable_dp(state, encoder, crtc_state, conn_state);
}
}
-static void intel_disable_ddi_buf(struct intel_encoder *encoder,
- const struct intel_crtc_state *crtc_state)
+static void
+mtl_ddi_disable_d2d_link(struct intel_encoder *encoder)
+{
+ struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+ enum port port = encoder->port;
+
+ intel_de_rmw(dev_priv, XELPDP_PORT_BUF_CTL1(port),
+ XELPDP_PORT_BUF_D2D_LINK_ENABLE, 0);
+
+ if (wait_for_us(!(intel_de_read(dev_priv, XELPDP_PORT_BUF_CTL1(port)) &
+ XELPDP_PORT_BUF_D2D_LINK_STATE), 100))
+ drm_err(&dev_priv->drm, "Timeout waiting for D2D Link disable for PORT_BUF_CTL %c\n",
+ port_name(port));
+}
+
+static void mtl_disable_ddi_buf(struct intel_encoder *encoder,
+ const struct intel_crtc_state *crtc_state)
+{
+ struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+ enum port port = encoder->port;
+ u32 val;
+
+ /* 3.b Clear DDI_CTL_DE Enable to 0. */
+ val = intel_de_read(dev_priv, DDI_BUF_CTL(port));
+ if (val & DDI_BUF_CTL_ENABLE) {
+ val &= ~DDI_BUF_CTL_ENABLE;
+ intel_de_write(dev_priv, DDI_BUF_CTL(port), val);
+
+ /* 3.c Poll for PORT_BUF_CTL Idle Status == 1, timeout after 100us */
+ mtl_wait_ddi_buf_idle(dev_priv, port);
+ }
+
+ /* 3.d Disable D2D Link */
+ mtl_ddi_disable_d2d_link(encoder);
+
+ /* 3.e Disable DP_TP_CTL */
+ if (intel_crtc_has_dp_encoder(crtc_state)) {
+ intel_de_rmw(dev_priv, dp_tp_ctl_reg(encoder, crtc_state),
+ DP_TP_CTL_ENABLE, 0);
+ }
+}
+
+static void disable_ddi_buf(struct intel_encoder *encoder,
+ const struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
enum port port = encoder->port;
intel_wait_ddi_buf_idle(dev_priv, port);
}
+static void intel_disable_ddi_buf(struct intel_encoder *encoder,
+ const struct intel_crtc_state *crtc_state)
+{
+ struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+
+ if (DISPLAY_VER(dev_priv) >= 14) {
+ mtl_disable_ddi_buf(encoder, crtc_state);
+
+ /* 3.f Disable DP_TP_CTL FEC Enable if it is needed */
+ intel_ddi_disable_fec_state(encoder, crtc_state);
+ } else {
+ disable_ddi_buf(encoder, crtc_state);
+ }
+}
+
static void intel_ddi_post_disable_dp(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *old_crtc_state,
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
struct intel_dp *intel_dp = &dig_port->dp;
+ intel_wakeref_t wakeref;
bool is_mst = intel_crtc_has_type(old_crtc_state,
INTEL_OUTPUT_DP_MST);
intel_pps_vdd_on(intel_dp);
intel_pps_off(intel_dp);
- if (!intel_tc_port_in_tbt_alt_mode(dig_port))
+ wakeref = fetch_and_zero(&dig_port->ddi_io_wakeref);
+
+ if (wakeref)
intel_display_power_put(dev_priv,
dig_port->ddi_io_power_domain,
- fetch_and_zero(&dig_port->ddi_io_wakeref));
+ wakeref);
intel_ddi_disable_clock(encoder);
+
+ /* De-select Thunderbolt */
+ if (DISPLAY_VER(dev_priv) >= 14)
+ intel_de_rmw(dev_priv, XELPDP_PORT_BUF_CTL1(encoder->port),
+ XELPDP_PORT_BUF_IO_SELECT_TBT, 0);
}
static void intel_ddi_post_disable_hdmi(struct intel_atomic_state *state,
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
struct intel_hdmi *intel_hdmi = &dig_port->hdmi;
+ intel_wakeref_t wakeref;
dig_port->set_infoframes(encoder, false,
old_crtc_state, old_conn_state);
if (DISPLAY_VER(dev_priv) >= 12)
intel_ddi_disable_transcoder_clock(old_crtc_state);
- intel_display_power_put(dev_priv,
- dig_port->ddi_io_power_domain,
- fetch_and_zero(&dig_port->ddi_io_wakeref));
+ wakeref = fetch_and_zero(&dig_port->ddi_io_wakeref);
+ if (wakeref)
+ intel_display_power_put(dev_priv,
+ dig_port->ddi_io_power_domain,
+ wakeref);
intel_ddi_disable_clock(encoder);
intel_dkl_phy_rmw(i915, DKL_PCS_DW5(tc_port, ln), DKL_PCS_DW5_CORE_SOFTRESET, 0);
}
+static void mtl_ddi_prepare_link_retrain(struct intel_dp *intel_dp,
+ const struct intel_crtc_state *crtc_state)
+{
+ struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+ struct intel_encoder *encoder = &dig_port->base;
+ struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+ enum port port = encoder->port;
+ u32 dp_tp_ctl;
+
+ /*
+ * TODO: To train with only a different voltage swing entry is not
+ * necessary disable and enable port
+ */
+ dp_tp_ctl = intel_de_read(dev_priv, dp_tp_ctl_reg(encoder, crtc_state));
+ if (dp_tp_ctl & DP_TP_CTL_ENABLE)
+ mtl_disable_ddi_buf(encoder, crtc_state);
+
+ /* 6.d Configure and enable DP_TP_CTL with link training pattern 1 selected */
+ dp_tp_ctl = DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_PAT1;
+ if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST)) {
+ dp_tp_ctl |= DP_TP_CTL_MODE_MST;
+ } else {
+ dp_tp_ctl |= DP_TP_CTL_MODE_SST;
+ if (drm_dp_enhanced_frame_cap(intel_dp->dpcd))
+ dp_tp_ctl |= DP_TP_CTL_ENHANCED_FRAME_ENABLE;
+ }
+ intel_de_write(dev_priv, dp_tp_ctl_reg(encoder, crtc_state), dp_tp_ctl);
+ intel_de_posting_read(dev_priv, dp_tp_ctl_reg(encoder, crtc_state));
+
+ /* 6.f Enable D2D Link */
+ mtl_ddi_enable_d2d(encoder);
+
+ /* 6.g Configure voltage swing and related IO settings */
+ encoder->set_signal_levels(encoder, crtc_state);
+
+ /* 6.h Configure PORT_BUF_CTL1 */
+ 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);
+ intel_de_posting_read(dev_priv, DDI_BUF_CTL(port));
+
+ /* 6.j Poll for PORT_BUF_CTL Idle Status == 0, timeout after 100 us */
+ intel_wait_ddi_buf_active(dev_priv, port);
+}
+
static void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp,
const struct intel_crtc_state *crtc_state)
{
static struct intel_connector *
intel_ddi_init_dp_connector(struct intel_digital_port *dig_port)
{
+ struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
struct intel_connector *connector;
enum port port = dig_port->base.port;
return NULL;
dig_port->dp.output_reg = DDI_BUF_CTL(port);
- dig_port->dp.prepare_link_retrain = intel_ddi_prepare_link_retrain;
+ if (DISPLAY_VER(i915) >= 14)
+ dig_port->dp.prepare_link_retrain = mtl_ddi_prepare_link_retrain;
+ else
+ dig_port->dp.prepare_link_retrain = intel_ddi_prepare_link_retrain;
dig_port->dp.set_link_train = intel_ddi_set_link_train;
dig_port->dp.set_idle_link_train = intel_ddi_set_idle_link_train;
projects / platform / kernel / linux-starfive.git / commitdiff