--- /dev/null
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2020 Intel Corporation
+ *
+ * DisplayPort support for G4x,ILK,SNB,IVB,VLV,CHV (HSW+ handled by the DDI code).
+ */
+
+#include "g4x_dp.h"
+#include "intel_audio.h"
+#include "intel_connector.h"
+#include "intel_display_types.h"
+#include "intel_dp.h"
+#include "intel_dp_link_training.h"
+#include "intel_dpio_phy.h"
+#include "intel_fifo_underrun.h"
+#include "intel_hdmi.h"
+#include "intel_hotplug.h"
+#include "intel_panel.h"
+#include "intel_pps.h"
+#include "intel_sideband.h"
+
+struct dp_link_dpll {
+ int clock;
+ struct dpll dpll;
+};
+
+static const struct dp_link_dpll g4x_dpll[] = {
+ { 162000,
+ { .p1 = 2, .p2 = 10, .n = 2, .m1 = 23, .m2 = 8 } },
+ { 270000,
+ { .p1 = 1, .p2 = 10, .n = 1, .m1 = 14, .m2 = 2 } }
+};
+
+static const struct dp_link_dpll pch_dpll[] = {
+ { 162000,
+ { .p1 = 2, .p2 = 10, .n = 1, .m1 = 12, .m2 = 9 } },
+ { 270000,
+ { .p1 = 1, .p2 = 10, .n = 2, .m1 = 14, .m2 = 8 } }
+};
+
+static const struct dp_link_dpll vlv_dpll[] = {
+ { 162000,
+ { .p1 = 3, .p2 = 2, .n = 5, .m1 = 3, .m2 = 81 } },
+ { 270000,
+ { .p1 = 2, .p2 = 2, .n = 1, .m1 = 2, .m2 = 27 } }
+};
+
+/*
+ * CHV supports eDP 1.4 that have more link rates.
+ * Below only provides the fixed rate but exclude variable rate.
+ */
+static const struct dp_link_dpll chv_dpll[] = {
+ /*
+ * CHV requires to program fractional division for m2.
+ * m2 is stored in fixed point format using formula below
+ * (m2_int << 22) | m2_fraction
+ */
+ { 162000, /* m2_int = 32, m2_fraction = 1677722 */
+ { .p1 = 4, .p2 = 2, .n = 1, .m1 = 2, .m2 = 0x819999a } },
+ { 270000, /* m2_int = 27, m2_fraction = 0 */
+ { .p1 = 4, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } },
+};
+
+const struct dpll *vlv_get_dpll(struct drm_i915_private *i915)
+{
+ return IS_CHERRYVIEW(i915) ? &chv_dpll[0].dpll : &vlv_dpll[0].dpll;
+}
+
+void intel_dp_set_clock(struct intel_encoder *encoder,
+ struct intel_crtc_state *pipe_config)
+{
+ struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+ const struct dp_link_dpll *divisor = NULL;
+ int i, count = 0;
+
+ if (IS_G4X(dev_priv)) {
+ divisor = g4x_dpll;
+ count = ARRAY_SIZE(g4x_dpll);
+ } else if (HAS_PCH_SPLIT(dev_priv)) {
+ divisor = pch_dpll;
+ count = ARRAY_SIZE(pch_dpll);
+ } else if (IS_CHERRYVIEW(dev_priv)) {
+ divisor = chv_dpll;
+ count = ARRAY_SIZE(chv_dpll);
+ } else if (IS_VALLEYVIEW(dev_priv)) {
+ divisor = vlv_dpll;
+ count = ARRAY_SIZE(vlv_dpll);
+ }
+
+ if (divisor && count) {
+ for (i = 0; i < count; i++) {
+ if (pipe_config->port_clock == divisor[i].clock) {
+ pipe_config->dpll = divisor[i].dpll;
+ pipe_config->clock_set = true;
+ break;
+ }
+ }
+ }
+}
+
+static void intel_dp_prepare(struct intel_encoder *encoder,
+ const struct intel_crtc_state *pipe_config)
+{
+ struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+ struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+ enum port port = encoder->port;
+ struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+ const struct drm_display_mode *adjusted_mode = &pipe_config->hw.adjusted_mode;
+
+ intel_dp_set_link_params(intel_dp,
+ pipe_config->port_clock,
+ pipe_config->lane_count);
+
+ /*
+ * There are four kinds of DP registers:
+ * IBX PCH
+ * SNB CPU
+ * IVB CPU
+ * CPT PCH
+ *
+ * IBX PCH and CPU are the same for almost everything,
+ * except that the CPU DP PLL is configured in this
+ * register
+ *
+ * CPT PCH is quite different, having many bits moved
+ * to the TRANS_DP_CTL register instead. That
+ * configuration happens (oddly) in ilk_pch_enable
+ */
+
+ /* Preserve the BIOS-computed detected bit. This is
+ * supposed to be read-only.
+ */
+ intel_dp->DP = intel_de_read(dev_priv, intel_dp->output_reg) & DP_DETECTED;
+
+ /* Handle DP bits in common between all three register formats */
+ intel_dp->DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0;
+ intel_dp->DP |= DP_PORT_WIDTH(pipe_config->lane_count);
+
+ /* Split out the IBX/CPU vs CPT settings */
+
+ if (IS_IVYBRIDGE(dev_priv) && port == PORT_A) {
+ if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
+ intel_dp->DP |= DP_SYNC_HS_HIGH;
+ if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
+ intel_dp->DP |= DP_SYNC_VS_HIGH;
+ intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT;
+
+ if (drm_dp_enhanced_frame_cap(intel_dp->dpcd))
+ intel_dp->DP |= DP_ENHANCED_FRAMING;
+
+ intel_dp->DP |= DP_PIPE_SEL_IVB(crtc->pipe);
+ } else if (HAS_PCH_CPT(dev_priv) && port != PORT_A) {
+ u32 trans_dp;
+
+ intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT;
+
+ trans_dp = intel_de_read(dev_priv, TRANS_DP_CTL(crtc->pipe));
+ if (drm_dp_enhanced_frame_cap(intel_dp->dpcd))
+ trans_dp |= TRANS_DP_ENH_FRAMING;
+ else
+ trans_dp &= ~TRANS_DP_ENH_FRAMING;
+ intel_de_write(dev_priv, TRANS_DP_CTL(crtc->pipe), trans_dp);
+ } else {
+ if (IS_G4X(dev_priv) && pipe_config->limited_color_range)
+ intel_dp->DP |= DP_COLOR_RANGE_16_235;
+
+ if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
+ intel_dp->DP |= DP_SYNC_HS_HIGH;
+ if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
+ intel_dp->DP |= DP_SYNC_VS_HIGH;
+ intel_dp->DP |= DP_LINK_TRAIN_OFF;
+
+ if (drm_dp_enhanced_frame_cap(intel_dp->dpcd))
+ intel_dp->DP |= DP_ENHANCED_FRAMING;
+
+ if (IS_CHERRYVIEW(dev_priv))
+ intel_dp->DP |= DP_PIPE_SEL_CHV(crtc->pipe);
+ else
+ intel_dp->DP |= DP_PIPE_SEL(crtc->pipe);
+ }
+}
+
+static void assert_dp_port(struct intel_dp *intel_dp, bool state)
+{
+ struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+ struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
+ bool cur_state = intel_de_read(dev_priv, intel_dp->output_reg) & DP_PORT_EN;
+
+ I915_STATE_WARN(cur_state != state,
+ "[ENCODER:%d:%s] state assertion failure (expected %s, current %s)\n",
+ dig_port->base.base.base.id, dig_port->base.base.name,
+ onoff(state), onoff(cur_state));
+}
+#define assert_dp_port_disabled(d) assert_dp_port((d), false)
+
+static void assert_edp_pll(struct drm_i915_private *dev_priv, bool state)
+{
+ bool cur_state = intel_de_read(dev_priv, DP_A) & DP_PLL_ENABLE;
+
+ I915_STATE_WARN(cur_state != state,
+ "eDP PLL state assertion failure (expected %s, current %s)\n",
+ onoff(state), onoff(cur_state));
+}
+#define assert_edp_pll_enabled(d) assert_edp_pll((d), true)
+#define assert_edp_pll_disabled(d) assert_edp_pll((d), false)
+
+static void ilk_edp_pll_on(struct intel_dp *intel_dp,
+ const struct intel_crtc_state *pipe_config)
+{
+ struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+ struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+
+ assert_pipe_disabled(dev_priv, pipe_config->cpu_transcoder);
+ assert_dp_port_disabled(intel_dp);
+ assert_edp_pll_disabled(dev_priv);
+
+ drm_dbg_kms(&dev_priv->drm, "enabling eDP PLL for clock %d\n",
+ pipe_config->port_clock);
+
+ intel_dp->DP &= ~DP_PLL_FREQ_MASK;
+
+ if (pipe_config->port_clock == 162000)
+ intel_dp->DP |= DP_PLL_FREQ_162MHZ;
+ else
+ intel_dp->DP |= DP_PLL_FREQ_270MHZ;
+
+ intel_de_write(dev_priv, DP_A, intel_dp->DP);
+ intel_de_posting_read(dev_priv, DP_A);
+ udelay(500);
+
+ /*
+ * [DevILK] Work around required when enabling DP PLL
+ * while a pipe is enabled going to FDI:
+ * 1. Wait for the start of vertical blank on the enabled pipe going to FDI
+ * 2. Program DP PLL enable
+ */
+ if (IS_GEN(dev_priv, 5))
+ intel_wait_for_vblank_if_active(dev_priv, !crtc->pipe);
+
+ intel_dp->DP |= DP_PLL_ENABLE;
+
+ intel_de_write(dev_priv, DP_A, intel_dp->DP);
+ intel_de_posting_read(dev_priv, DP_A);
+ udelay(200);
+}
+
+static void ilk_edp_pll_off(struct intel_dp *intel_dp,
+ const struct intel_crtc_state *old_crtc_state)
+{
+ struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
+ struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+
+ assert_pipe_disabled(dev_priv, old_crtc_state->cpu_transcoder);
+ assert_dp_port_disabled(intel_dp);
+ assert_edp_pll_enabled(dev_priv);
+
+ drm_dbg_kms(&dev_priv->drm, "disabling eDP PLL\n");
+
+ intel_dp->DP &= ~DP_PLL_ENABLE;
+
+ intel_de_write(dev_priv, DP_A, intel_dp->DP);
+ intel_de_posting_read(dev_priv, DP_A);
+ udelay(200);
+}
+
+static bool cpt_dp_port_selected(struct drm_i915_private *dev_priv,
+ enum port port, enum pipe *pipe)
+{
+ enum pipe p;
+
+ for_each_pipe(dev_priv, p) {
+ u32 val = intel_de_read(dev_priv, TRANS_DP_CTL(p));
+
+ if ((val & TRANS_DP_PORT_SEL_MASK) == TRANS_DP_PORT_SEL(port)) {
+ *pipe = p;
+ return true;
+ }
+ }
+
+ drm_dbg_kms(&dev_priv->drm, "No pipe for DP port %c found\n",
+ port_name(port));
+
+ /* must initialize pipe to something for the asserts */
+ *pipe = PIPE_A;
+
+ return false;
+}
+
+bool intel_dp_port_enabled(struct drm_i915_private *dev_priv,
+ i915_reg_t dp_reg, enum port port,
+ enum pipe *pipe)
+{
+ bool ret;
+ u32 val;
+
+ val = intel_de_read(dev_priv, dp_reg);
+
+ ret = val & DP_PORT_EN;
+
+ /* asserts want to know the pipe even if the port is disabled */
+ if (IS_IVYBRIDGE(dev_priv) && port == PORT_A)
+ *pipe = (val & DP_PIPE_SEL_MASK_IVB) >> DP_PIPE_SEL_SHIFT_IVB;
+ else if (HAS_PCH_CPT(dev_priv) && port != PORT_A)
+ ret &= cpt_dp_port_selected(dev_priv, port, pipe);
+ else if (IS_CHERRYVIEW(dev_priv))
+ *pipe = (val & DP_PIPE_SEL_MASK_CHV) >> DP_PIPE_SEL_SHIFT_CHV;
+ else
+ *pipe = (val & DP_PIPE_SEL_MASK) >> DP_PIPE_SEL_SHIFT;
+
+ return ret;
+}
+
+static bool intel_dp_get_hw_state(struct intel_encoder *encoder,
+ enum pipe *pipe)
+{
+ struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+ struct intel_dp *intel_dp = enc_to_intel_dp(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_dp_port_enabled(dev_priv, intel_dp->output_reg,
+ encoder->port, pipe);
+
+ intel_display_power_put(dev_priv, encoder->power_domain, wakeref);
+
+ return ret;
+}
+
+static void intel_dp_get_config(struct intel_encoder *encoder,
+ struct intel_crtc_state *pipe_config)
+{
+ struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+ struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+ u32 tmp, flags = 0;
+ enum port port = encoder->port;
+ struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+
+ if (encoder->type == INTEL_OUTPUT_EDP)
+ pipe_config->output_types |= BIT(INTEL_OUTPUT_EDP);
+ else
+ pipe_config->output_types |= BIT(INTEL_OUTPUT_DP);
+
+ tmp = intel_de_read(dev_priv, intel_dp->output_reg);
+
+ pipe_config->has_audio = tmp & DP_AUDIO_OUTPUT_ENABLE && port != PORT_A;
+
+ if (HAS_PCH_CPT(dev_priv) && port != PORT_A) {
+ u32 trans_dp = intel_de_read(dev_priv,
+ TRANS_DP_CTL(crtc->pipe));
+
+ if (trans_dp & TRANS_DP_HSYNC_ACTIVE_HIGH)
+ flags |= DRM_MODE_FLAG_PHSYNC;
+ else
+ flags |= DRM_MODE_FLAG_NHSYNC;
+
+ if (trans_dp & TRANS_DP_VSYNC_ACTIVE_HIGH)
+ flags |= DRM_MODE_FLAG_PVSYNC;
+ else
+ flags |= DRM_MODE_FLAG_NVSYNC;
+ } else {
+ if (tmp & DP_SYNC_HS_HIGH)
+ flags |= DRM_MODE_FLAG_PHSYNC;
+ else
+ flags |= DRM_MODE_FLAG_NHSYNC;
+
+ if (tmp & DP_SYNC_VS_HIGH)
+ flags |= DRM_MODE_FLAG_PVSYNC;
+ else
+ flags |= DRM_MODE_FLAG_NVSYNC;
+ }
+
+ pipe_config->hw.adjusted_mode.flags |= flags;
+
+ if (IS_G4X(dev_priv) && tmp & DP_COLOR_RANGE_16_235)
+ pipe_config->limited_color_range = true;
+
+ pipe_config->lane_count =
+ ((tmp & DP_PORT_WIDTH_MASK) >> DP_PORT_WIDTH_SHIFT) + 1;
+
+ intel_dp_get_m_n(crtc, pipe_config);
+
+ if (port == PORT_A) {
+ if ((intel_de_read(dev_priv, DP_A) & DP_PLL_FREQ_MASK) == DP_PLL_FREQ_162MHZ)
+ pipe_config->port_clock = 162000;
+ else
+ pipe_config->port_clock = 270000;
+ }
+
+ pipe_config->hw.adjusted_mode.crtc_clock =
+ intel_dotclock_calculate(pipe_config->port_clock,
+ &pipe_config->dp_m_n);
+
+ if (intel_dp_is_edp(intel_dp) && dev_priv->vbt.edp.bpp &&
+ pipe_config->pipe_bpp > dev_priv->vbt.edp.bpp) {
+ /*
+ * This is a big fat ugly hack.
+ *
+ * Some machines in UEFI boot mode provide us a VBT that has 18
+ * bpp and 1.62 GHz link bandwidth for eDP, which for reasons
+ * unknown we fail to light up. Yet the same BIOS boots up with
+ * 24 bpp and 2.7 GHz link. Use the same bpp as the BIOS uses as
+ * max, not what it tells us to use.
+ *
+ * Note: This will still be broken if the eDP panel is not lit
+ * up by the BIOS, and thus we can't get the mode at module
+ * load.
+ */
+ drm_dbg_kms(&dev_priv->drm,
+ "pipe has %d bpp for eDP panel, overriding BIOS-provided max %d bpp\n",
+ pipe_config->pipe_bpp, dev_priv->vbt.edp.bpp);
+ dev_priv->vbt.edp.bpp = pipe_config->pipe_bpp;
+ }
+}
+
+static void
+intel_dp_link_down(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_dp *intel_dp = enc_to_intel_dp(encoder);
+ struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
+ enum port port = encoder->port;
+ u32 DP = intel_dp->DP;
+
+ if (drm_WARN_ON(&dev_priv->drm,
+ (intel_de_read(dev_priv, intel_dp->output_reg) &
+ DP_PORT_EN) == 0))
+ return;
+
+ drm_dbg_kms(&dev_priv->drm, "\n");
+
+ if ((IS_IVYBRIDGE(dev_priv) && port == PORT_A) ||
+ (HAS_PCH_CPT(dev_priv) && port != PORT_A)) {
+ DP &= ~DP_LINK_TRAIN_MASK_CPT;
+ DP |= DP_LINK_TRAIN_PAT_IDLE_CPT;
+ } else {
+ DP &= ~DP_LINK_TRAIN_MASK;
+ DP |= DP_LINK_TRAIN_PAT_IDLE;
+ }
+ intel_de_write(dev_priv, intel_dp->output_reg, DP);
+ intel_de_posting_read(dev_priv, intel_dp->output_reg);
+
+ DP &= ~(DP_PORT_EN | DP_AUDIO_OUTPUT_ENABLE);
+ intel_de_write(dev_priv, intel_dp->output_reg, DP);
+ intel_de_posting_read(dev_priv, intel_dp->output_reg);
+
+ /*
+ * HW workaround for IBX, we need to move the port
+ * to transcoder A after disabling it to allow the
+ * matching HDMI port to be enabled on transcoder A.
+ */
+ if (HAS_PCH_IBX(dev_priv) && crtc->pipe == PIPE_B && port != PORT_A) {
+ /*
+ * 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);
+
+ /* always enable with pattern 1 (as per spec) */
+ DP &= ~(DP_PIPE_SEL_MASK | DP_LINK_TRAIN_MASK);
+ DP |= DP_PORT_EN | DP_PIPE_SEL(PIPE_A) |
+ DP_LINK_TRAIN_PAT_1;
+ intel_de_write(dev_priv, intel_dp->output_reg, DP);
+ intel_de_posting_read(dev_priv, intel_dp->output_reg);
+
+ DP &= ~DP_PORT_EN;
+ intel_de_write(dev_priv, intel_dp->output_reg, DP);
+ intel_de_posting_read(dev_priv, intel_dp->output_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);
+ }
+
+ msleep(intel_dp->pps.panel_power_down_delay);
+
+ intel_dp->DP = DP;
+
+ if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+ intel_wakeref_t wakeref;
+
+ with_intel_pps_lock(intel_dp, wakeref)
+ intel_dp->pps.active_pipe = INVALID_PIPE;
+ }
+}
+
+static void intel_disable_dp(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 intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+ intel_dp->link_trained = false;
+
+ if (old_crtc_state->has_audio)
+ intel_audio_codec_disable(encoder,
+ old_crtc_state, old_conn_state);
+
+ /*
+ * Make sure the panel is off before trying to change the mode.
+ * But also ensure that we have vdd while we switch off the panel.
+ */
+ intel_pps_vdd_on(intel_dp);
+ intel_edp_backlight_off(old_conn_state);
+ intel_dp_set_power(intel_dp, DP_SET_POWER_D3);
+ intel_pps_off(intel_dp);
+}
+
+static void g4x_disable_dp(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_dp(state, encoder, old_crtc_state, old_conn_state);
+}
+
+static void vlv_disable_dp(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_dp(state, encoder, old_crtc_state, old_conn_state);
+}
+
+static void g4x_post_disable_dp(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 intel_dp *intel_dp = enc_to_intel_dp(encoder);
+ enum port port = encoder->port;
+
+ /*
+ * Bspec does not list a specific disable sequence for g4x DP.
+ * Follow the ilk+ sequence (disable pipe before the port) for
+ * g4x DP as it does not suffer from underruns like the normal
+ * g4x modeset sequence (disable pipe after the port).
+ */
+ intel_dp_link_down(encoder, old_crtc_state);
+
+ /* Only ilk+ has port A */
+ if (port == PORT_A)
+ ilk_edp_pll_off(intel_dp, old_crtc_state);
+}
+
+static void vlv_post_disable_dp(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_dp_link_down(encoder, old_crtc_state);
+}
+
+static void chv_post_disable_dp(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_i915_private *dev_priv = to_i915(encoder->base.dev);
+
+ intel_dp_link_down(encoder, old_crtc_state);
+
+ 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
+cpt_set_link_train(struct intel_dp *intel_dp,
+ const struct intel_crtc_state *crtc_state,
+ u8 dp_train_pat)
+{
+ struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+ u32 *DP = &intel_dp->DP;
+
+ *DP &= ~DP_LINK_TRAIN_MASK_CPT;
+
+ switch (intel_dp_training_pattern_symbol(dp_train_pat)) {
+ case DP_TRAINING_PATTERN_DISABLE:
+ *DP |= DP_LINK_TRAIN_OFF_CPT;
+ break;
+ case DP_TRAINING_PATTERN_1:
+ *DP |= DP_LINK_TRAIN_PAT_1_CPT;
+ break;
+ case DP_TRAINING_PATTERN_2:
+ *DP |= DP_LINK_TRAIN_PAT_2_CPT;
+ break;
+ default:
+ MISSING_CASE(intel_dp_training_pattern_symbol(dp_train_pat));
+ return;
+ }
+
+ intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
+ intel_de_posting_read(dev_priv, intel_dp->output_reg);
+}
+
+static void
+g4x_set_link_train(struct intel_dp *intel_dp,
+ const struct intel_crtc_state *crtc_state,
+ u8 dp_train_pat)
+{
+ struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+ u32 *DP = &intel_dp->DP;
+
+ *DP &= ~DP_LINK_TRAIN_MASK;
+
+ switch (intel_dp_training_pattern_symbol(dp_train_pat)) {
+ case DP_TRAINING_PATTERN_DISABLE:
+ *DP |= DP_LINK_TRAIN_OFF;
+ break;
+ case DP_TRAINING_PATTERN_1:
+ *DP |= DP_LINK_TRAIN_PAT_1;
+ break;
+ case DP_TRAINING_PATTERN_2:
+ *DP |= DP_LINK_TRAIN_PAT_2;
+ break;
+ default:
+ MISSING_CASE(intel_dp_training_pattern_symbol(dp_train_pat));
+ return;
+ }
+
+ intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
+ intel_de_posting_read(dev_priv, intel_dp->output_reg);
+}
+
+static void intel_dp_enable_port(struct intel_dp *intel_dp,
+ const struct intel_crtc_state *crtc_state)
+{
+ struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+ /* enable with pattern 1 (as per spec) */
+
+ intel_dp_program_link_training_pattern(intel_dp, crtc_state,
+ DP_TRAINING_PATTERN_1);
+
+ /*
+ * Magic for VLV/CHV. We _must_ first set up the register
+ * without actually enabling the port, and then do another
+ * write to enable the port. Otherwise link training will
+ * fail when the power sequencer is freshly used for this port.
+ */
+ intel_dp->DP |= DP_PORT_EN;
+ if (crtc_state->has_audio)
+ intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE;
+
+ intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
+ intel_de_posting_read(dev_priv, intel_dp->output_reg);
+}
+
+static void intel_enable_dp(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_i915_private *dev_priv = to_i915(encoder->base.dev);
+ struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+ struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+ u32 dp_reg = intel_de_read(dev_priv, intel_dp->output_reg);
+ enum pipe pipe = crtc->pipe;
+ intel_wakeref_t wakeref;
+
+ if (drm_WARN_ON(&dev_priv->drm, dp_reg & DP_PORT_EN))
+ return;
+
+ with_intel_pps_lock(intel_dp, wakeref) {
+ if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
+ vlv_pps_init(encoder, pipe_config);
+
+ intel_dp_enable_port(intel_dp, pipe_config);
+
+ intel_pps_vdd_on_unlocked(intel_dp);
+ intel_pps_on_unlocked(intel_dp);
+ intel_pps_vdd_off_unlocked(intel_dp, true);
+ }
+
+ if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+ unsigned int lane_mask = 0x0;
+
+ if (IS_CHERRYVIEW(dev_priv))
+ lane_mask = intel_dp_unused_lane_mask(pipe_config->lane_count);
+
+ vlv_wait_port_ready(dev_priv, dp_to_dig_port(intel_dp),
+ lane_mask);
+ }
+
+ intel_dp_set_power(intel_dp, DP_SET_POWER_D0);
+ intel_dp_configure_protocol_converter(intel_dp, pipe_config);
+ intel_dp_check_frl_training(intel_dp);
+ intel_dp_pcon_dsc_configure(intel_dp, pipe_config);
+ intel_dp_start_link_train(intel_dp, pipe_config);
+ intel_dp_stop_link_train(intel_dp, pipe_config);
+
+ if (pipe_config->has_audio) {
+ drm_dbg(&dev_priv->drm, "Enabling DP audio on pipe %c\n",
+ pipe_name(pipe));
+ intel_audio_codec_enable(encoder, pipe_config, conn_state);
+ }
+}
+
+static void g4x_enable_dp(struct intel_atomic_state *state,
+ struct intel_encoder *encoder,
+ const struct intel_crtc_state *pipe_config,
+ const struct drm_connector_state *conn_state)
+{
+ intel_enable_dp(state, encoder, pipe_config, conn_state);
+ intel_edp_backlight_on(pipe_config, conn_state);
+}
+
+static void vlv_enable_dp(struct intel_atomic_state *state,
+ struct intel_encoder *encoder,
+ const struct intel_crtc_state *pipe_config,
+ const struct drm_connector_state *conn_state)
+{
+ intel_edp_backlight_on(pipe_config, conn_state);
+}
+
+static void g4x_pre_enable_dp(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_dp *intel_dp = enc_to_intel_dp(encoder);
+ enum port port = encoder->port;
+
+ intel_dp_prepare(encoder, pipe_config);
+
+ /* Only ilk+ has port A */
+ if (port == PORT_A)
+ ilk_edp_pll_on(intel_dp, pipe_config);
+}
+
+static void vlv_pre_enable_dp(struct intel_atomic_state *state,
+ struct intel_encoder *encoder,
+ const struct intel_crtc_state *pipe_config,
+ const struct drm_connector_state *conn_state)
+{
+ vlv_phy_pre_encoder_enable(encoder, pipe_config);
+
+ intel_enable_dp(state, encoder, pipe_config, conn_state);
+}
+
+static void vlv_dp_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_dp_prepare(encoder, pipe_config);
+
+ vlv_phy_pre_pll_enable(encoder, pipe_config);
+}
+
+static void chv_pre_enable_dp(struct intel_atomic_state *state,
+ struct intel_encoder *encoder,
+ const struct intel_crtc_state *pipe_config,
+ const struct drm_connector_state *conn_state)
+{
+ chv_phy_pre_encoder_enable(encoder, pipe_config);
+
+ intel_enable_dp(state, encoder, pipe_config, conn_state);
+
+ /* Second common lane will stay alive on its own now */
+ chv_phy_release_cl2_override(encoder);
+}
+
+static void chv_dp_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_dp_prepare(encoder, pipe_config);
+
+ chv_phy_pre_pll_enable(encoder, pipe_config);
+}
+
+static void chv_dp_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 u8 intel_dp_voltage_max_2(struct intel_dp *intel_dp,
+ const struct intel_crtc_state *crtc_state)
+{
+ return DP_TRAIN_VOLTAGE_SWING_LEVEL_2;
+}
+
+static u8 intel_dp_voltage_max_3(struct intel_dp *intel_dp,
+ const struct intel_crtc_state *crtc_state)
+{
+ return DP_TRAIN_VOLTAGE_SWING_LEVEL_3;
+}
+
+static u8 intel_dp_preemph_max_2(struct intel_dp *intel_dp)
+{
+ return DP_TRAIN_PRE_EMPH_LEVEL_2;
+}
+
+static u8 intel_dp_preemph_max_3(struct intel_dp *intel_dp)
+{
+ return DP_TRAIN_PRE_EMPH_LEVEL_3;
+}
+
+static void vlv_set_signal_levels(struct intel_dp *intel_dp,
+ const struct intel_crtc_state *crtc_state)
+{
+ struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+ unsigned long demph_reg_value, preemph_reg_value,
+ uniqtranscale_reg_value;
+ u8 train_set = intel_dp->train_set[0];
+
+ switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) {
+ case DP_TRAIN_PRE_EMPH_LEVEL_0:
+ preemph_reg_value = 0x0004000;
+ switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
+ demph_reg_value = 0x2B405555;
+ uniqtranscale_reg_value = 0x552AB83A;
+ break;
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
+ demph_reg_value = 0x2B404040;
+ uniqtranscale_reg_value = 0x5548B83A;
+ break;
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_2:
+ demph_reg_value = 0x2B245555;
+ uniqtranscale_reg_value = 0x5560B83A;
+ break;
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_3:
+ demph_reg_value = 0x2B405555;
+ uniqtranscale_reg_value = 0x5598DA3A;
+ break;
+ default:
+ return;
+ }
+ break;
+ case DP_TRAIN_PRE_EMPH_LEVEL_1:
+ preemph_reg_value = 0x0002000;
+ switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
+ demph_reg_value = 0x2B404040;
+ uniqtranscale_reg_value = 0x5552B83A;
+ break;
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
+ demph_reg_value = 0x2B404848;
+ uniqtranscale_reg_value = 0x5580B83A;
+ break;
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_2:
+ demph_reg_value = 0x2B404040;
+ uniqtranscale_reg_value = 0x55ADDA3A;
+ break;
+ default:
+ return;
+ }
+ break;
+ case DP_TRAIN_PRE_EMPH_LEVEL_2:
+ preemph_reg_value = 0x0000000;
+ switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
+ demph_reg_value = 0x2B305555;
+ uniqtranscale_reg_value = 0x5570B83A;
+ break;
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
+ demph_reg_value = 0x2B2B4040;
+ uniqtranscale_reg_value = 0x55ADDA3A;
+ break;
+ default:
+ return;
+ }
+ break;
+ case DP_TRAIN_PRE_EMPH_LEVEL_3:
+ preemph_reg_value = 0x0006000;
+ switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
+ demph_reg_value = 0x1B405555;
+ uniqtranscale_reg_value = 0x55ADDA3A;
+ break;
+ default:
+ return;
+ }
+ break;
+ default:
+ return;
+ }
+
+ vlv_set_phy_signal_level(encoder, crtc_state,
+ demph_reg_value, preemph_reg_value,
+ uniqtranscale_reg_value, 0);
+}
+
+static void chv_set_signal_levels(struct intel_dp *intel_dp,
+ const struct intel_crtc_state *crtc_state)
+{
+ struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+ u32 deemph_reg_value, margin_reg_value;
+ bool uniq_trans_scale = false;
+ u8 train_set = intel_dp->train_set[0];
+
+ switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) {
+ case DP_TRAIN_PRE_EMPH_LEVEL_0:
+ switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
+ deemph_reg_value = 128;
+ margin_reg_value = 52;
+ break;
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
+ deemph_reg_value = 128;
+ margin_reg_value = 77;
+ break;
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_2:
+ deemph_reg_value = 128;
+ margin_reg_value = 102;
+ break;
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_3:
+ deemph_reg_value = 128;
+ margin_reg_value = 154;
+ uniq_trans_scale = true;
+ break;
+ default:
+ return;
+ }
+ break;
+ case DP_TRAIN_PRE_EMPH_LEVEL_1:
+ switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
+ deemph_reg_value = 85;
+ margin_reg_value = 78;
+ break;
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
+ deemph_reg_value = 85;
+ margin_reg_value = 116;
+ break;
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_2:
+ deemph_reg_value = 85;
+ margin_reg_value = 154;
+ break;
+ default:
+ return;
+ }
+ break;
+ case DP_TRAIN_PRE_EMPH_LEVEL_2:
+ switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
+ deemph_reg_value = 64;
+ margin_reg_value = 104;
+ break;
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
+ deemph_reg_value = 64;
+ margin_reg_value = 154;
+ break;
+ default:
+ return;
+ }
+ break;
+ case DP_TRAIN_PRE_EMPH_LEVEL_3:
+ switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
+ deemph_reg_value = 43;
+ margin_reg_value = 154;
+ break;
+ default:
+ return;
+ }
+ break;
+ default:
+ return;
+ }
+
+ chv_set_phy_signal_level(encoder, crtc_state,
+ deemph_reg_value, margin_reg_value,
+ uniq_trans_scale);
+}
+
+static u32 g4x_signal_levels(u8 train_set)
+{
+ u32 signal_levels = 0;
+
+ switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
+ default:
+ signal_levels |= DP_VOLTAGE_0_4;
+ break;
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
+ signal_levels |= DP_VOLTAGE_0_6;
+ break;
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_2:
+ signal_levels |= DP_VOLTAGE_0_8;
+ break;
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_3:
+ signal_levels |= DP_VOLTAGE_1_2;
+ break;
+ }
+ switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) {
+ case DP_TRAIN_PRE_EMPH_LEVEL_0:
+ default:
+ signal_levels |= DP_PRE_EMPHASIS_0;
+ break;
+ case DP_TRAIN_PRE_EMPH_LEVEL_1:
+ signal_levels |= DP_PRE_EMPHASIS_3_5;
+ break;
+ case DP_TRAIN_PRE_EMPH_LEVEL_2:
+ signal_levels |= DP_PRE_EMPHASIS_6;
+ break;
+ case DP_TRAIN_PRE_EMPH_LEVEL_3:
+ signal_levels |= DP_PRE_EMPHASIS_9_5;
+ break;
+ }
+ return signal_levels;
+}
+
+static void
+g4x_set_signal_levels(struct intel_dp *intel_dp,
+ const struct intel_crtc_state *crtc_state)
+{
+ struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+ u8 train_set = intel_dp->train_set[0];
+ u32 signal_levels;
+
+ signal_levels = g4x_signal_levels(train_set);
+
+ drm_dbg_kms(&dev_priv->drm, "Using signal levels %08x\n",
+ signal_levels);
+
+ intel_dp->DP &= ~(DP_VOLTAGE_MASK | DP_PRE_EMPHASIS_MASK);
+ intel_dp->DP |= signal_levels;
+
+ intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
+ intel_de_posting_read(dev_priv, intel_dp->output_reg);
+}
+
+/* SNB CPU eDP voltage swing and pre-emphasis control */
+static u32 snb_cpu_edp_signal_levels(u8 train_set)
+{
+ u8 signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK |
+ DP_TRAIN_PRE_EMPHASIS_MASK);
+
+ switch (signal_levels) {
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0:
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0:
+ return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B;
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1:
+ return EDP_LINK_TRAIN_400MV_3_5DB_SNB_B;
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2:
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2:
+ return EDP_LINK_TRAIN_400_600MV_6DB_SNB_B;
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1:
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1:
+ return EDP_LINK_TRAIN_600_800MV_3_5DB_SNB_B;
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0:
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0:
+ return EDP_LINK_TRAIN_800_1200MV_0DB_SNB_B;
+ default:
+ MISSING_CASE(signal_levels);
+ return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B;
+ }
+}
+
+static void
+snb_cpu_edp_set_signal_levels(struct intel_dp *intel_dp,
+ const struct intel_crtc_state *crtc_state)
+{
+ struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+ u8 train_set = intel_dp->train_set[0];
+ u32 signal_levels;
+
+ signal_levels = snb_cpu_edp_signal_levels(train_set);
+
+ drm_dbg_kms(&dev_priv->drm, "Using signal levels %08x\n",
+ signal_levels);
+
+ intel_dp->DP &= ~EDP_LINK_TRAIN_VOL_EMP_MASK_SNB;
+ intel_dp->DP |= signal_levels;
+
+ intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
+ intel_de_posting_read(dev_priv, intel_dp->output_reg);
+}
+
+/* IVB CPU eDP voltage swing and pre-emphasis control */
+static u32 ivb_cpu_edp_signal_levels(u8 train_set)
+{
+ u8 signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK |
+ DP_TRAIN_PRE_EMPHASIS_MASK);
+
+ switch (signal_levels) {
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0:
+ return EDP_LINK_TRAIN_400MV_0DB_IVB;
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1:
+ return EDP_LINK_TRAIN_400MV_3_5DB_IVB;
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2:
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2:
+ return EDP_LINK_TRAIN_400MV_6DB_IVB;
+
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0:
+ return EDP_LINK_TRAIN_600MV_0DB_IVB;
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1:
+ return EDP_LINK_TRAIN_600MV_3_5DB_IVB;
+
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0:
+ return EDP_LINK_TRAIN_800MV_0DB_IVB;
+ case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1:
+ return EDP_LINK_TRAIN_800MV_3_5DB_IVB;
+
+ default:
+ MISSING_CASE(signal_levels);
+ return EDP_LINK_TRAIN_500MV_0DB_IVB;
+ }
+}
+
+static void
+ivb_cpu_edp_set_signal_levels(struct intel_dp *intel_dp,
+ const struct intel_crtc_state *crtc_state)
+{
+ struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+ u8 train_set = intel_dp->train_set[0];
+ u32 signal_levels;
+
+ signal_levels = ivb_cpu_edp_signal_levels(train_set);
+
+ drm_dbg_kms(&dev_priv->drm, "Using signal levels %08x\n",
+ signal_levels);
+
+ intel_dp->DP &= ~EDP_LINK_TRAIN_VOL_EMP_MASK_IVB;
+ intel_dp->DP |= signal_levels;
+
+ intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
+ intel_de_posting_read(dev_priv, intel_dp->output_reg);
+}
+
+/*
+ * If display is now connected check links status,
+ * there has been known issues of link loss triggering
+ * long pulse.
+ *
+ * Some sinks (eg. ASUS PB287Q) seem to perform some
+ * weird HPD ping pong during modesets. So we can apparently
+ * end up with HPD going low during a modeset, and then
+ * going back up soon after. And once that happens we must
+ * retrain the link to get a picture. That's in case no
+ * userspace component reacted to intermittent HPD dip.
+ */
+static enum intel_hotplug_state
+intel_dp_hotplug(struct intel_encoder *encoder,
+ struct intel_connector *connector)
+{
+ struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+ struct drm_modeset_acquire_ctx ctx;
+ enum intel_hotplug_state state;
+ int ret;
+
+ if (intel_dp->compliance.test_active &&
+ intel_dp->compliance.test_type == DP_TEST_LINK_PHY_TEST_PATTERN) {
+ intel_dp_phy_test(encoder);
+ /* just do the PHY test and nothing else */
+ return INTEL_HOTPLUG_UNCHANGED;
+ }
+
+ state = intel_encoder_hotplug(encoder, connector);
+
+ drm_modeset_acquire_init(&ctx, 0);
+
+ for (;;) {
+ ret = intel_dp_retrain_link(encoder, &ctx);
+
+ if (ret == -EDEADLK) {
+ drm_modeset_backoff(&ctx);
+ continue;
+ }
+
+ break;
+ }
+
+ drm_modeset_drop_locks(&ctx);
+ drm_modeset_acquire_fini(&ctx);
+ drm_WARN(encoder->base.dev, ret,
+ "Acquiring modeset locks failed with %i\n", ret);
+
+ /*
+ * Keeping it consistent with intel_ddi_hotplug() and
+ * intel_hdmi_hotplug().
+ */
+ if (state == INTEL_HOTPLUG_UNCHANGED && !connector->hotplug_retries)
+ state = INTEL_HOTPLUG_RETRY;
+
+ return state;
+}
+
+static bool ibx_digital_port_connected(struct intel_encoder *encoder)
+{
+ struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+ u32 bit = dev_priv->hotplug.pch_hpd[encoder->hpd_pin];
+
+ return intel_de_read(dev_priv, SDEISR) & bit;
+}
+
+static bool g4x_digital_port_connected(struct intel_encoder *encoder)
+{
+ struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+ u32 bit;
+
+ switch (encoder->hpd_pin) {
+ case HPD_PORT_B:
+ bit = PORTB_HOTPLUG_LIVE_STATUS_G4X;
+ break;
+ case HPD_PORT_C:
+ bit = PORTC_HOTPLUG_LIVE_STATUS_G4X;
+ break;
+ case HPD_PORT_D:
+ bit = PORTD_HOTPLUG_LIVE_STATUS_G4X;
+ break;
+ default:
+ MISSING_CASE(encoder->hpd_pin);
+ return false;
+ }
+
+ return intel_de_read(dev_priv, PORT_HOTPLUG_STAT) & bit;
+}
+
+static bool gm45_digital_port_connected(struct intel_encoder *encoder)
+{
+ struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+ u32 bit;
+
+ switch (encoder->hpd_pin) {
+ case HPD_PORT_B:
+ bit = PORTB_HOTPLUG_LIVE_STATUS_GM45;
+ break;
+ case HPD_PORT_C:
+ bit = PORTC_HOTPLUG_LIVE_STATUS_GM45;
+ break;
+ case HPD_PORT_D:
+ bit = PORTD_HOTPLUG_LIVE_STATUS_GM45;
+ break;
+ default:
+ MISSING_CASE(encoder->hpd_pin);
+ return false;
+ }
+
+ return intel_de_read(dev_priv, PORT_HOTPLUG_STAT) & bit;
+}
+
+static bool ilk_digital_port_connected(struct intel_encoder *encoder)
+{
+ struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+ u32 bit = dev_priv->hotplug.hpd[encoder->hpd_pin];
+
+ return intel_de_read(dev_priv, DEISR) & bit;
+}
+
+static void intel_dp_encoder_destroy(struct drm_encoder *encoder)
+{
+ intel_dp_encoder_flush_work(encoder);
+
+ drm_encoder_cleanup(encoder);
+ kfree(enc_to_dig_port(to_intel_encoder(encoder)));
+}
+
+enum pipe vlv_active_pipe(struct intel_dp *intel_dp)
+{
+ struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+ struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+ enum pipe pipe;
+
+ if (intel_dp_port_enabled(dev_priv, intel_dp->output_reg,
+ encoder->port, &pipe))
+ return pipe;
+
+ return INVALID_PIPE;
+}
+
+static void intel_dp_encoder_reset(struct drm_encoder *encoder)
+{
+ struct drm_i915_private *dev_priv = to_i915(encoder->dev);
+ struct intel_dp *intel_dp = enc_to_intel_dp(to_intel_encoder(encoder));
+
+ intel_dp->DP = intel_de_read(dev_priv, intel_dp->output_reg);
+
+ intel_dp->reset_link_params = true;
+
+ if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+ intel_wakeref_t wakeref;
+
+ with_intel_pps_lock(intel_dp, wakeref)
+ intel_dp->pps.active_pipe = vlv_active_pipe(intel_dp);
+ }
+
+ intel_pps_encoder_reset(intel_dp);
+}
+
+static const struct drm_encoder_funcs intel_dp_enc_funcs = {
+ .reset = intel_dp_encoder_reset,
+ .destroy = intel_dp_encoder_destroy,
+};
+
+bool intel_dp_init(struct drm_i915_private *dev_priv,
+ i915_reg_t output_reg,
+ enum port port)
+{
+ struct intel_digital_port *dig_port;
+ struct intel_encoder *intel_encoder;
+ struct drm_encoder *encoder;
+ struct intel_connector *intel_connector;
+
+ dig_port = kzalloc(sizeof(*dig_port), GFP_KERNEL);
+ if (!dig_port)
+ return false;
+
+ intel_connector = intel_connector_alloc();
+ if (!intel_connector)
+ goto err_connector_alloc;
+
+ intel_encoder = &dig_port->base;
+ encoder = &intel_encoder->base;
+
+ mutex_init(&dig_port->hdcp_mutex);
+
+ if (drm_encoder_init(&dev_priv->drm, &intel_encoder->base,
+ &intel_dp_enc_funcs, DRM_MODE_ENCODER_TMDS,
+ "DP %c", port_name(port)))
+ goto err_encoder_init;
+
+ intel_encoder->hotplug = intel_dp_hotplug;
+ intel_encoder->compute_config = intel_dp_compute_config;
+ intel_encoder->get_hw_state = intel_dp_get_hw_state;
+ intel_encoder->get_config = intel_dp_get_config;
+ intel_encoder->sync_state = intel_dp_sync_state;
+ intel_encoder->initial_fastset_check = intel_dp_initial_fastset_check;
+ intel_encoder->update_pipe = intel_panel_update_backlight;
+ intel_encoder->suspend = intel_dp_encoder_suspend;
+ intel_encoder->shutdown = intel_dp_encoder_shutdown;
+ if (IS_CHERRYVIEW(dev_priv)) {
+ intel_encoder->pre_pll_enable = chv_dp_pre_pll_enable;
+ intel_encoder->pre_enable = chv_pre_enable_dp;
+ intel_encoder->enable = vlv_enable_dp;
+ intel_encoder->disable = vlv_disable_dp;
+ intel_encoder->post_disable = chv_post_disable_dp;
+ intel_encoder->post_pll_disable = chv_dp_post_pll_disable;
+ } else if (IS_VALLEYVIEW(dev_priv)) {
+ intel_encoder->pre_pll_enable = vlv_dp_pre_pll_enable;
+ intel_encoder->pre_enable = vlv_pre_enable_dp;
+ intel_encoder->enable = vlv_enable_dp;
+ intel_encoder->disable = vlv_disable_dp;
+ intel_encoder->post_disable = vlv_post_disable_dp;
+ } else {
+ intel_encoder->pre_enable = g4x_pre_enable_dp;
+ intel_encoder->enable = g4x_enable_dp;
+ intel_encoder->disable = g4x_disable_dp;
+ intel_encoder->post_disable = g4x_post_disable_dp;
+ }
+
+ if ((IS_IVYBRIDGE(dev_priv) && port == PORT_A) ||
+ (HAS_PCH_CPT(dev_priv) && port != PORT_A))
+ dig_port->dp.set_link_train = cpt_set_link_train;
+ else
+ dig_port->dp.set_link_train = g4x_set_link_train;
+
+ if (IS_CHERRYVIEW(dev_priv))
+ dig_port->dp.set_signal_levels = chv_set_signal_levels;
+ else if (IS_VALLEYVIEW(dev_priv))
+ dig_port->dp.set_signal_levels = vlv_set_signal_levels;
+ else if (IS_IVYBRIDGE(dev_priv) && port == PORT_A)
+ dig_port->dp.set_signal_levels = ivb_cpu_edp_set_signal_levels;
+ else if (IS_GEN(dev_priv, 6) && port == PORT_A)
+ dig_port->dp.set_signal_levels = snb_cpu_edp_set_signal_levels;
+ else
+ dig_port->dp.set_signal_levels = g4x_set_signal_levels;
+
+ if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv) ||
+ (HAS_PCH_SPLIT(dev_priv) && port != PORT_A)) {
+ dig_port->dp.preemph_max = intel_dp_preemph_max_3;
+ dig_port->dp.voltage_max = intel_dp_voltage_max_3;
+ } else {
+ dig_port->dp.preemph_max = intel_dp_preemph_max_2;
+ dig_port->dp.voltage_max = intel_dp_voltage_max_2;
+ }
+
+ dig_port->dp.output_reg = output_reg;
+ dig_port->max_lanes = 4;
+
+ intel_encoder->type = INTEL_OUTPUT_DP;
+ intel_encoder->power_domain = intel_port_to_power_domain(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 = 0;
+ intel_encoder->port = port;
+ intel_encoder->hpd_pin = intel_hpd_pin_default(dev_priv, port);
+
+ dig_port->hpd_pulse = intel_dp_hpd_pulse;
+
+ if (HAS_GMCH(dev_priv)) {
+ if (IS_GM45(dev_priv))
+ dig_port->connected = gm45_digital_port_connected;
+ else
+ dig_port->connected = g4x_digital_port_connected;
+ } else {
+ if (port == PORT_A)
+ dig_port->connected = ilk_digital_port_connected;
+ else
+ dig_port->connected = ibx_digital_port_connected;
+ }
+
+ if (port != PORT_A)
+ intel_infoframe_init(dig_port);
+
+ dig_port->aux_ch = intel_bios_port_aux_ch(dev_priv, port);
+ if (!intel_dp_init_connector(dig_port, intel_connector))
+ goto err_init_connector;
+
+ return true;
+
+err_init_connector:
+ drm_encoder_cleanup(encoder);
+err_encoder_init:
+ kfree(intel_connector);
+err_connector_alloc:
+ kfree(dig_port);
+ return false;
+}
#include <drm/drm_edid.h>
#include <drm/drm_probe_helper.h>
+#include "g4x_dp.h"
#include "i915_debugfs.h"
#include "i915_drv.h"
#include "intel_atomic.h"
#define INTEL_DP_RESOLUTION_STANDARD (2 << INTEL_DP_RESOLUTION_SHIFT_MASK)
#define INTEL_DP_RESOLUTION_FAILSAFE (3 << INTEL_DP_RESOLUTION_SHIFT_MASK)
-struct dp_link_dpll {
- int clock;
- struct dpll dpll;
-};
-
-static const struct dp_link_dpll g4x_dpll[] = {
- { 162000,
- { .p1 = 2, .p2 = 10, .n = 2, .m1 = 23, .m2 = 8 } },
- { 270000,
- { .p1 = 1, .p2 = 10, .n = 1, .m1 = 14, .m2 = 2 } }
-};
-
-static const struct dp_link_dpll pch_dpll[] = {
- { 162000,
- { .p1 = 2, .p2 = 10, .n = 1, .m1 = 12, .m2 = 9 } },
- { 270000,
- { .p1 = 1, .p2 = 10, .n = 2, .m1 = 14, .m2 = 8 } }
-};
-
-static const struct dp_link_dpll vlv_dpll[] = {
- { 162000,
- { .p1 = 3, .p2 = 2, .n = 5, .m1 = 3, .m2 = 81 } },
- { 270000,
- { .p1 = 2, .p2 = 2, .n = 1, .m1 = 2, .m2 = 27 } }
-};
-
-/*
- * CHV supports eDP 1.4 that have more link rates.
- * Below only provides the fixed rate but exclude variable rate.
- */
-static const struct dp_link_dpll chv_dpll[] = {
- /*
- * CHV requires to program fractional division for m2.
- * m2 is stored in fixed point format using formula below
- * (m2_int << 22) | m2_fraction
- */
- { 162000, /* m2_int = 32, m2_fraction = 1677722 */
- { .p1 = 4, .p2 = 2, .n = 1, .m1 = 2, .m2 = 0x819999a } },
- { 270000, /* m2_int = 27, m2_fraction = 0 */
- { .p1 = 4, .p2 = 1, .n = 1, .m1 = 2, .m2 = 0x6c00000 } },
-};
-
-const struct dpll *vlv_get_dpll(struct drm_i915_private *i915)
-{
- return IS_CHERRYVIEW(i915) ? &chv_dpll[0].dpll : &vlv_dpll[0].dpll;
-}
/* Constants for DP DSC configurations */
static const u8 valid_dsc_bpp[] = {6, 8, 10, 12, 15};
return dig_port->base.type == INTEL_OUTPUT_EDP;
}
-static void intel_dp_link_down(struct intel_encoder *encoder,
- const struct intel_crtc_state *old_crtc_state);
static void intel_dp_unset_edid(struct intel_dp *intel_dp);
/* update sink rates from dpcd */
return max_rate >= 810000;
}
-static void
-intel_dp_set_clock(struct intel_encoder *encoder,
- struct intel_crtc_state *pipe_config)
-{
- struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
- const struct dp_link_dpll *divisor = NULL;
- int i, count = 0;
-
- if (IS_G4X(dev_priv)) {
- divisor = g4x_dpll;
- count = ARRAY_SIZE(g4x_dpll);
- } else if (HAS_PCH_SPLIT(dev_priv)) {
- divisor = pch_dpll;
- count = ARRAY_SIZE(pch_dpll);
- } else if (IS_CHERRYVIEW(dev_priv)) {
- divisor = chv_dpll;
- count = ARRAY_SIZE(chv_dpll);
- } else if (IS_VALLEYVIEW(dev_priv)) {
- divisor = vlv_dpll;
- count = ARRAY_SIZE(vlv_dpll);
- }
-
- if (divisor && count) {
- for (i = 0; i < count; i++) {
- if (pipe_config->port_clock == divisor[i].clock) {
- pipe_config->dpll = divisor[i].dpll;
- pipe_config->clock_set = true;
- break;
- }
- }
- }
-}
-
static void snprintf_int_array(char *str, size_t len,
const int *array, int nelem)
{
intel_dp->lane_count = lane_count;
}
-static void intel_dp_prepare(struct intel_encoder *encoder,
- const struct intel_crtc_state *pipe_config)
-{
- struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
- struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
- enum port port = encoder->port;
- struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
- const struct drm_display_mode *adjusted_mode = &pipe_config->hw.adjusted_mode;
-
- intel_dp_set_link_params(intel_dp,
- pipe_config->port_clock,
- pipe_config->lane_count);
-
- /*
- * There are four kinds of DP registers:
- *
- * IBX PCH
- * SNB CPU
- * IVB CPU
- * CPT PCH
- *
- * IBX PCH and CPU are the same for almost everything,
- * except that the CPU DP PLL is configured in this
- * register
- *
- * CPT PCH is quite different, having many bits moved
- * to the TRANS_DP_CTL register instead. That
- * configuration happens (oddly) in ilk_pch_enable
- */
-
- /* Preserve the BIOS-computed detected bit. This is
- * supposed to be read-only.
- */
- intel_dp->DP = intel_de_read(dev_priv, intel_dp->output_reg) & DP_DETECTED;
-
- /* Handle DP bits in common between all three register formats */
- intel_dp->DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0;
- intel_dp->DP |= DP_PORT_WIDTH(pipe_config->lane_count);
-
- /* Split out the IBX/CPU vs CPT settings */
-
- if (IS_IVYBRIDGE(dev_priv) && port == PORT_A) {
- if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
- intel_dp->DP |= DP_SYNC_HS_HIGH;
- if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
- intel_dp->DP |= DP_SYNC_VS_HIGH;
- intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT;
-
- if (drm_dp_enhanced_frame_cap(intel_dp->dpcd))
- intel_dp->DP |= DP_ENHANCED_FRAMING;
-
- intel_dp->DP |= DP_PIPE_SEL_IVB(crtc->pipe);
- } else if (HAS_PCH_CPT(dev_priv) && port != PORT_A) {
- u32 trans_dp;
-
- intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT;
-
- trans_dp = intel_de_read(dev_priv, TRANS_DP_CTL(crtc->pipe));
- if (drm_dp_enhanced_frame_cap(intel_dp->dpcd))
- trans_dp |= TRANS_DP_ENH_FRAMING;
- else
- trans_dp &= ~TRANS_DP_ENH_FRAMING;
- intel_de_write(dev_priv, TRANS_DP_CTL(crtc->pipe), trans_dp);
- } else {
- if (IS_G4X(dev_priv) && pipe_config->limited_color_range)
- intel_dp->DP |= DP_COLOR_RANGE_16_235;
-
- if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
- intel_dp->DP |= DP_SYNC_HS_HIGH;
- if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
- intel_dp->DP |= DP_SYNC_VS_HIGH;
- intel_dp->DP |= DP_LINK_TRAIN_OFF;
-
- if (drm_dp_enhanced_frame_cap(intel_dp->dpcd))
- intel_dp->DP |= DP_ENHANCED_FRAMING;
-
- if (IS_CHERRYVIEW(dev_priv))
- intel_dp->DP |= DP_PIPE_SEL_CHV(crtc->pipe);
- else
- intel_dp->DP |= DP_PIPE_SEL(crtc->pipe);
- }
-}
-
-
/* Enable backlight PWM and backlight PP control. */
void intel_edp_backlight_on(const struct intel_crtc_state *crtc_state,
const struct drm_connector_state *conn_state)
intel_panel_disable_backlight(old_conn_state);
}
-static void assert_dp_port(struct intel_dp *intel_dp, bool state)
-{
- struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
- struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
- bool cur_state = intel_de_read(dev_priv, intel_dp->output_reg) & DP_PORT_EN;
-
- I915_STATE_WARN(cur_state != state,
- "[ENCODER:%d:%s] state assertion failure (expected %s, current %s)\n",
- dig_port->base.base.base.id, dig_port->base.base.name,
- onoff(state), onoff(cur_state));
-}
-#define assert_dp_port_disabled(d) assert_dp_port((d), false)
-
-static void assert_edp_pll(struct drm_i915_private *dev_priv, bool state)
-{
- bool cur_state = intel_de_read(dev_priv, DP_A) & DP_PLL_ENABLE;
-
- I915_STATE_WARN(cur_state != state,
- "eDP PLL state assertion failure (expected %s, current %s)\n",
- onoff(state), onoff(cur_state));
-}
-#define assert_edp_pll_enabled(d) assert_edp_pll((d), true)
-#define assert_edp_pll_disabled(d) assert_edp_pll((d), false)
-
-static void ilk_edp_pll_on(struct intel_dp *intel_dp,
- const struct intel_crtc_state *pipe_config)
-{
- struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
- struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-
- assert_pipe_disabled(dev_priv, pipe_config->cpu_transcoder);
- assert_dp_port_disabled(intel_dp);
- assert_edp_pll_disabled(dev_priv);
-
- drm_dbg_kms(&dev_priv->drm, "enabling eDP PLL for clock %d\n",
- pipe_config->port_clock);
-
- intel_dp->DP &= ~DP_PLL_FREQ_MASK;
-
- if (pipe_config->port_clock == 162000)
- intel_dp->DP |= DP_PLL_FREQ_162MHZ;
- else
- intel_dp->DP |= DP_PLL_FREQ_270MHZ;
-
- intel_de_write(dev_priv, DP_A, intel_dp->DP);
- intel_de_posting_read(dev_priv, DP_A);
- udelay(500);
-
- /*
- * [DevILK] Work around required when enabling DP PLL
- * while a pipe is enabled going to FDI:
- * 1. Wait for the start of vertical blank on the enabled pipe going to FDI
- * 2. Program DP PLL enable
- */
- if (IS_GEN(dev_priv, 5))
- intel_wait_for_vblank_if_active(dev_priv, !crtc->pipe);
-
- intel_dp->DP |= DP_PLL_ENABLE;
-
- intel_de_write(dev_priv, DP_A, intel_dp->DP);
- intel_de_posting_read(dev_priv, DP_A);
- udelay(200);
-}
-
-static void ilk_edp_pll_off(struct intel_dp *intel_dp,
- const struct intel_crtc_state *old_crtc_state)
-{
- struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
- struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-
- assert_pipe_disabled(dev_priv, old_crtc_state->cpu_transcoder);
- assert_dp_port_disabled(intel_dp);
- assert_edp_pll_enabled(dev_priv);
-
- drm_dbg_kms(&dev_priv->drm, "disabling eDP PLL\n");
-
- intel_dp->DP &= ~DP_PLL_ENABLE;
-
- intel_de_write(dev_priv, DP_A, intel_dp->DP);
- intel_de_posting_read(dev_priv, DP_A);
- udelay(200);
-}
-
static bool downstream_hpd_needs_d0(struct intel_dp *intel_dp)
{
/*
mode == DP_SET_POWER_D0 ? "D0" : "D3");
}
-static bool cpt_dp_port_selected(struct drm_i915_private *dev_priv,
- enum port port, enum pipe *pipe)
-{
- enum pipe p;
-
- for_each_pipe(dev_priv, p) {
- u32 val = intel_de_read(dev_priv, TRANS_DP_CTL(p));
-
- if ((val & TRANS_DP_PORT_SEL_MASK) == TRANS_DP_PORT_SEL(port)) {
- *pipe = p;
- return true;
- }
- }
-
- drm_dbg_kms(&dev_priv->drm, "No pipe for DP port %c found\n",
- port_name(port));
-
- /* must initialize pipe to something for the asserts */
- *pipe = PIPE_A;
-
- return false;
-}
-
-bool intel_dp_port_enabled(struct drm_i915_private *dev_priv,
- i915_reg_t dp_reg, enum port port,
- enum pipe *pipe)
-{
- bool ret;
- u32 val;
-
- val = intel_de_read(dev_priv, dp_reg);
-
- ret = val & DP_PORT_EN;
-
- /* asserts want to know the pipe even if the port is disabled */
- if (IS_IVYBRIDGE(dev_priv) && port == PORT_A)
- *pipe = (val & DP_PIPE_SEL_MASK_IVB) >> DP_PIPE_SEL_SHIFT_IVB;
- else if (HAS_PCH_CPT(dev_priv) && port != PORT_A)
- ret &= cpt_dp_port_selected(dev_priv, port, pipe);
- else if (IS_CHERRYVIEW(dev_priv))
- *pipe = (val & DP_PIPE_SEL_MASK_CHV) >> DP_PIPE_SEL_SHIFT_CHV;
- else
- *pipe = (val & DP_PIPE_SEL_MASK) >> DP_PIPE_SEL_SHIFT;
-
- return ret;
-}
-
-static bool intel_dp_get_hw_state(struct intel_encoder *encoder,
- enum pipe *pipe)
-{
- struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
- struct intel_dp *intel_dp = enc_to_intel_dp(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_dp_port_enabled(dev_priv, intel_dp->output_reg,
- encoder->port, pipe);
-
- intel_display_power_put(dev_priv, encoder->power_domain, wakeref);
-
- return ret;
-}
-
-static void intel_dp_get_config(struct intel_encoder *encoder,
- struct intel_crtc_state *pipe_config)
-{
- struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
- struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
- u32 tmp, flags = 0;
- enum port port = encoder->port;
- struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
-
- if (encoder->type == INTEL_OUTPUT_EDP)
- pipe_config->output_types |= BIT(INTEL_OUTPUT_EDP);
- else
- pipe_config->output_types |= BIT(INTEL_OUTPUT_DP);
-
- tmp = intel_de_read(dev_priv, intel_dp->output_reg);
-
- pipe_config->has_audio = tmp & DP_AUDIO_OUTPUT_ENABLE && port != PORT_A;
-
- if (HAS_PCH_CPT(dev_priv) && port != PORT_A) {
- u32 trans_dp = intel_de_read(dev_priv,
- TRANS_DP_CTL(crtc->pipe));
-
- if (trans_dp & TRANS_DP_HSYNC_ACTIVE_HIGH)
- flags |= DRM_MODE_FLAG_PHSYNC;
- else
- flags |= DRM_MODE_FLAG_NHSYNC;
-
- if (trans_dp & TRANS_DP_VSYNC_ACTIVE_HIGH)
- flags |= DRM_MODE_FLAG_PVSYNC;
- else
- flags |= DRM_MODE_FLAG_NVSYNC;
- } else {
- if (tmp & DP_SYNC_HS_HIGH)
- flags |= DRM_MODE_FLAG_PHSYNC;
- else
- flags |= DRM_MODE_FLAG_NHSYNC;
-
- if (tmp & DP_SYNC_VS_HIGH)
- flags |= DRM_MODE_FLAG_PVSYNC;
- else
- flags |= DRM_MODE_FLAG_NVSYNC;
- }
-
- pipe_config->hw.adjusted_mode.flags |= flags;
-
- if (IS_G4X(dev_priv) && tmp & DP_COLOR_RANGE_16_235)
- pipe_config->limited_color_range = true;
-
- pipe_config->lane_count =
- ((tmp & DP_PORT_WIDTH_MASK) >> DP_PORT_WIDTH_SHIFT) + 1;
-
- intel_dp_get_m_n(crtc, pipe_config);
-
- if (port == PORT_A) {
- if ((intel_de_read(dev_priv, DP_A) & DP_PLL_FREQ_MASK) == DP_PLL_FREQ_162MHZ)
- pipe_config->port_clock = 162000;
- else
- pipe_config->port_clock = 270000;
- }
-
- pipe_config->hw.adjusted_mode.crtc_clock =
- intel_dotclock_calculate(pipe_config->port_clock,
- &pipe_config->dp_m_n);
-
- if (intel_dp_is_edp(intel_dp) && dev_priv->vbt.edp.bpp &&
- pipe_config->pipe_bpp > dev_priv->vbt.edp.bpp) {
- /*
- * This is a big fat ugly hack.
- *
- * Some machines in UEFI boot mode provide us a VBT that has 18
- * bpp and 1.62 GHz link bandwidth for eDP, which for reasons
- * unknown we fail to light up. Yet the same BIOS boots up with
- * 24 bpp and 2.7 GHz link. Use the same bpp as the BIOS uses as
- * max, not what it tells us to use.
- *
- * Note: This will still be broken if the eDP panel is not lit
- * up by the BIOS, and thus we can't get the mode at module
- * load.
- */
- drm_dbg_kms(&dev_priv->drm,
- "pipe has %d bpp for eDP panel, overriding BIOS-provided max %d bpp\n",
- pipe_config->pipe_bpp, dev_priv->vbt.edp.bpp);
- dev_priv->vbt.edp.bpp = pipe_config->pipe_bpp;
- }
-}
-
static bool
intel_dp_get_dpcd(struct intel_dp *intel_dp);
return true;
}
-static void intel_disable_dp(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 intel_dp *intel_dp = enc_to_intel_dp(encoder);
-
- intel_dp->link_trained = false;
-
- if (old_crtc_state->has_audio)
- intel_audio_codec_disable(encoder,
- old_crtc_state, old_conn_state);
-
- /* Make sure the panel is off before trying to change the mode. But also
- * ensure that we have vdd while we switch off the panel. */
- intel_pps_vdd_on(intel_dp);
- intel_edp_backlight_off(old_conn_state);
- intel_dp_set_power(intel_dp, DP_SET_POWER_D3);
- intel_pps_off(intel_dp);
-}
-
-static void g4x_disable_dp(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_dp(state, encoder, old_crtc_state, old_conn_state);
-}
-
-static void vlv_disable_dp(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_dp(state, encoder, old_crtc_state, old_conn_state);
-}
-
-static void g4x_post_disable_dp(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 intel_dp *intel_dp = enc_to_intel_dp(encoder);
- enum port port = encoder->port;
-
- /*
- * Bspec does not list a specific disable sequence for g4x DP.
- * Follow the ilk+ sequence (disable pipe before the port) for
- * g4x DP as it does not suffer from underruns like the normal
- * g4x modeset sequence (disable pipe after the port).
- */
- intel_dp_link_down(encoder, old_crtc_state);
-
- /* Only ilk+ has port A */
- if (port == PORT_A)
- ilk_edp_pll_off(intel_dp, old_crtc_state);
-}
-
-static void vlv_post_disable_dp(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_dp_link_down(encoder, old_crtc_state);
-}
-
-static void chv_post_disable_dp(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_i915_private *dev_priv = to_i915(encoder->base.dev);
-
- intel_dp_link_down(encoder, old_crtc_state);
-
- 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
-cpt_set_link_train(struct intel_dp *intel_dp,
- const struct intel_crtc_state *crtc_state,
- u8 dp_train_pat)
-{
- struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
- u32 *DP = &intel_dp->DP;
-
- *DP &= ~DP_LINK_TRAIN_MASK_CPT;
-
- switch (intel_dp_training_pattern_symbol(dp_train_pat)) {
- case DP_TRAINING_PATTERN_DISABLE:
- *DP |= DP_LINK_TRAIN_OFF_CPT;
- break;
- case DP_TRAINING_PATTERN_1:
- *DP |= DP_LINK_TRAIN_PAT_1_CPT;
- break;
- case DP_TRAINING_PATTERN_2:
- *DP |= DP_LINK_TRAIN_PAT_2_CPT;
- break;
- default:
- MISSING_CASE(intel_dp_training_pattern_symbol(dp_train_pat));
- return;
- }
-
- intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
- intel_de_posting_read(dev_priv, intel_dp->output_reg);
-}
-
static void intel_dp_get_pcon_dsc_cap(struct intel_dp *intel_dp)
{
struct drm_i915_private *i915 = dp_to_i915(intel_dp);
int pcon_fractional_bpp = drm_dp_pcon_dsc_bpp_incr(intel_dp->pcon_dsc_dpcd);
int hdmi_max_chunk_bytes =
connector->display_info.hdmi.dsc_cap.total_chunk_kbytes * 1024;
-
- return intel_hdmi_dsc_get_bpp(pcon_fractional_bpp, slice_width,
- num_slices, output_format, hdmi_all_bpp,
- hdmi_max_chunk_bytes);
-}
-
-void
-intel_dp_pcon_dsc_configure(struct intel_dp *intel_dp,
- const struct intel_crtc_state *crtc_state)
-{
- u8 pps_param[6];
- int slice_height;
- int slice_width;
- int num_slices;
- int bits_per_pixel;
- int ret;
- struct intel_connector *intel_connector = intel_dp->attached_connector;
- struct drm_i915_private *i915 = dp_to_i915(intel_dp);
- struct drm_connector *connector;
- bool hdmi_is_dsc_1_2;
-
- if (!intel_dp_is_hdmi_2_1_sink(intel_dp))
- return;
-
- if (!intel_connector)
- return;
- connector = &intel_connector->base;
- hdmi_is_dsc_1_2 = connector->display_info.hdmi.dsc_cap.v_1p2;
-
- if (!drm_dp_pcon_enc_is_dsc_1_2(intel_dp->pcon_dsc_dpcd) ||
- !hdmi_is_dsc_1_2)
- return;
-
- slice_height = intel_dp_pcon_dsc_enc_slice_height(crtc_state);
- if (!slice_height)
- return;
-
- num_slices = intel_dp_pcon_dsc_enc_slices(intel_dp, crtc_state);
- if (!num_slices)
- return;
-
- slice_width = DIV_ROUND_UP(crtc_state->hw.adjusted_mode.hdisplay,
- num_slices);
-
- bits_per_pixel = intel_dp_pcon_dsc_enc_bpp(intel_dp, crtc_state,
- num_slices, slice_width);
- if (!bits_per_pixel)
- return;
-
- pps_param[0] = slice_height & 0xFF;
- pps_param[1] = slice_height >> 8;
- pps_param[2] = slice_width & 0xFF;
- pps_param[3] = slice_width >> 8;
- pps_param[4] = bits_per_pixel & 0xFF;
- pps_param[5] = (bits_per_pixel >> 8) & 0x3;
-
- ret = drm_dp_pcon_pps_override_param(&intel_dp->aux, pps_param);
- if (ret < 0)
- drm_dbg_kms(&i915->drm, "Failed to set pcon DSC\n");
-}
-
-static void
-g4x_set_link_train(struct intel_dp *intel_dp,
- const struct intel_crtc_state *crtc_state,
- u8 dp_train_pat)
-{
- struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
- u32 *DP = &intel_dp->DP;
-
- *DP &= ~DP_LINK_TRAIN_MASK;
-
- switch (intel_dp_training_pattern_symbol(dp_train_pat)) {
- case DP_TRAINING_PATTERN_DISABLE:
- *DP |= DP_LINK_TRAIN_OFF;
- break;
- case DP_TRAINING_PATTERN_1:
- *DP |= DP_LINK_TRAIN_PAT_1;
- break;
- case DP_TRAINING_PATTERN_2:
- *DP |= DP_LINK_TRAIN_PAT_2;
- break;
- default:
- MISSING_CASE(intel_dp_training_pattern_symbol(dp_train_pat));
- return;
- }
-
- intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
- intel_de_posting_read(dev_priv, intel_dp->output_reg);
-}
-
-static void intel_dp_enable_port(struct intel_dp *intel_dp,
- const struct intel_crtc_state *crtc_state)
-{
- struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
-
- /* enable with pattern 1 (as per spec) */
-
- intel_dp_program_link_training_pattern(intel_dp, crtc_state,
- DP_TRAINING_PATTERN_1);
-
- /*
- * Magic for VLV/CHV. We _must_ first set up the register
- * without actually enabling the port, and then do another
- * write to enable the port. Otherwise link training will
- * fail when the power sequencer is freshly used for this port.
- */
- intel_dp->DP |= DP_PORT_EN;
- if (crtc_state->has_audio)
- intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE;
-
- intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
- intel_de_posting_read(dev_priv, intel_dp->output_reg);
-}
-
-void intel_dp_configure_protocol_converter(struct intel_dp *intel_dp,
- const struct intel_crtc_state *crtc_state)
-{
- struct drm_i915_private *i915 = dp_to_i915(intel_dp);
- u8 tmp;
-
- if (intel_dp->dpcd[DP_DPCD_REV] < 0x13)
- return;
-
- if (!drm_dp_is_branch(intel_dp->dpcd))
- return;
-
- tmp = intel_dp->has_hdmi_sink ?
- DP_HDMI_DVI_OUTPUT_CONFIG : 0;
-
- if (drm_dp_dpcd_writeb(&intel_dp->aux,
- DP_PROTOCOL_CONVERTER_CONTROL_0, tmp) != 1)
- drm_dbg_kms(&i915->drm, "Failed to set protocol converter HDMI mode to %s\n",
- enableddisabled(intel_dp->has_hdmi_sink));
-
- tmp = crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR444 &&
- intel_dp->dfp.ycbcr_444_to_420 ? DP_CONVERSION_TO_YCBCR420_ENABLE : 0;
-
- if (drm_dp_dpcd_writeb(&intel_dp->aux,
- DP_PROTOCOL_CONVERTER_CONTROL_1, tmp) != 1)
- drm_dbg_kms(&i915->drm,
- "Failed to set protocol converter YCbCr 4:2:0 conversion mode to %s\n",
- enableddisabled(intel_dp->dfp.ycbcr_444_to_420));
-
- tmp = 0;
- if (intel_dp->dfp.rgb_to_ycbcr) {
- bool bt2020, bt709;
-
- /*
- * FIXME: Currently if userspace selects BT2020 or BT709, but PCON supports only
- * RGB->YCbCr for BT601 colorspace, we go ahead with BT601, as default.
- *
- */
- tmp = DP_CONVERSION_BT601_RGB_YCBCR_ENABLE;
-
- bt2020 = drm_dp_downstream_rgb_to_ycbcr_conversion(intel_dp->dpcd,
- intel_dp->downstream_ports,
- DP_DS_HDMI_BT2020_RGB_YCBCR_CONV);
- bt709 = drm_dp_downstream_rgb_to_ycbcr_conversion(intel_dp->dpcd,
- intel_dp->downstream_ports,
- DP_DS_HDMI_BT709_RGB_YCBCR_CONV);
- switch (crtc_state->infoframes.vsc.colorimetry) {
- case DP_COLORIMETRY_BT2020_RGB:
- case DP_COLORIMETRY_BT2020_YCC:
- if (bt2020)
- tmp = DP_CONVERSION_BT2020_RGB_YCBCR_ENABLE;
- break;
- case DP_COLORIMETRY_BT709_YCC:
- case DP_COLORIMETRY_XVYCC_709:
- if (bt709)
- tmp = DP_CONVERSION_BT709_RGB_YCBCR_ENABLE;
- break;
- default:
- break;
- }
- }
-
- if (drm_dp_pcon_convert_rgb_to_ycbcr(&intel_dp->aux, tmp) < 0)
- drm_dbg_kms(&i915->drm,
- "Failed to set protocol converter RGB->YCbCr conversion mode to %s\n",
- enableddisabled(tmp ? true : false));
-}
-
-static void intel_enable_dp(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_i915_private *dev_priv = to_i915(encoder->base.dev);
- struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
- struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
- u32 dp_reg = intel_de_read(dev_priv, intel_dp->output_reg);
- enum pipe pipe = crtc->pipe;
- intel_wakeref_t wakeref;
-
- if (drm_WARN_ON(&dev_priv->drm, dp_reg & DP_PORT_EN))
- return;
-
- with_intel_pps_lock(intel_dp, wakeref) {
- if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
- vlv_pps_init(encoder, pipe_config);
-
- intel_dp_enable_port(intel_dp, pipe_config);
-
- intel_pps_vdd_on_unlocked(intel_dp);
- intel_pps_on_unlocked(intel_dp);
- intel_pps_vdd_off_unlocked(intel_dp, true);
- }
-
- if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
- unsigned int lane_mask = 0x0;
-
- if (IS_CHERRYVIEW(dev_priv))
- lane_mask = intel_dp_unused_lane_mask(pipe_config->lane_count);
-
- vlv_wait_port_ready(dev_priv, dp_to_dig_port(intel_dp),
- lane_mask);
- }
-
- intel_dp_set_power(intel_dp, DP_SET_POWER_D0);
- intel_dp_configure_protocol_converter(intel_dp, pipe_config);
- intel_dp_check_frl_training(intel_dp);
- intel_dp_pcon_dsc_configure(intel_dp, pipe_config);
- intel_dp_start_link_train(intel_dp, pipe_config);
- intel_dp_stop_link_train(intel_dp, pipe_config);
-
- if (pipe_config->has_audio) {
- drm_dbg(&dev_priv->drm, "Enabling DP audio on pipe %c\n",
- pipe_name(pipe));
- intel_audio_codec_enable(encoder, pipe_config, conn_state);
- }
-}
-
-static void g4x_enable_dp(struct intel_atomic_state *state,
- struct intel_encoder *encoder,
- const struct intel_crtc_state *pipe_config,
- const struct drm_connector_state *conn_state)
-{
- intel_enable_dp(state, encoder, pipe_config, conn_state);
- intel_edp_backlight_on(pipe_config, conn_state);
-}
-
-static void vlv_enable_dp(struct intel_atomic_state *state,
- struct intel_encoder *encoder,
- const struct intel_crtc_state *pipe_config,
- const struct drm_connector_state *conn_state)
-{
- intel_edp_backlight_on(pipe_config, conn_state);
-}
-
-static void g4x_pre_enable_dp(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_dp *intel_dp = enc_to_intel_dp(encoder);
- enum port port = encoder->port;
-
- intel_dp_prepare(encoder, pipe_config);
-
- /* Only ilk+ has port A */
- if (port == PORT_A)
- ilk_edp_pll_on(intel_dp, pipe_config);
-}
-
-static void vlv_pre_enable_dp(struct intel_atomic_state *state,
- struct intel_encoder *encoder,
- const struct intel_crtc_state *pipe_config,
- const struct drm_connector_state *conn_state)
-{
- vlv_phy_pre_encoder_enable(encoder, pipe_config);
-
- intel_enable_dp(state, encoder, pipe_config, conn_state);
-}
-
-static void vlv_dp_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_dp_prepare(encoder, pipe_config);
-
- vlv_phy_pre_pll_enable(encoder, pipe_config);
-}
-
-static void chv_pre_enable_dp(struct intel_atomic_state *state,
- struct intel_encoder *encoder,
- const struct intel_crtc_state *pipe_config,
- const struct drm_connector_state *conn_state)
-{
- chv_phy_pre_encoder_enable(encoder, pipe_config);
-
- intel_enable_dp(state, encoder, pipe_config, conn_state);
-
- /* Second common lane will stay alive on its own now */
- chv_phy_release_cl2_override(encoder);
-}
-
-static void chv_dp_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_dp_prepare(encoder, pipe_config);
-
- chv_phy_pre_pll_enable(encoder, pipe_config);
-}
-
-static void chv_dp_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 u8 intel_dp_voltage_max_2(struct intel_dp *intel_dp,
- const struct intel_crtc_state *crtc_state)
-{
- return DP_TRAIN_VOLTAGE_SWING_LEVEL_2;
-}
-
-static u8 intel_dp_voltage_max_3(struct intel_dp *intel_dp,
- const struct intel_crtc_state *crtc_state)
-{
- return DP_TRAIN_VOLTAGE_SWING_LEVEL_3;
-}
-
-static u8 intel_dp_preemph_max_2(struct intel_dp *intel_dp)
-{
- return DP_TRAIN_PRE_EMPH_LEVEL_2;
-}
-
-static u8 intel_dp_preemph_max_3(struct intel_dp *intel_dp)
-{
- return DP_TRAIN_PRE_EMPH_LEVEL_3;
-}
-
-static void vlv_set_signal_levels(struct intel_dp *intel_dp,
- const struct intel_crtc_state *crtc_state)
-{
- struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
- unsigned long demph_reg_value, preemph_reg_value,
- uniqtranscale_reg_value;
- u8 train_set = intel_dp->train_set[0];
-
- switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) {
- case DP_TRAIN_PRE_EMPH_LEVEL_0:
- preemph_reg_value = 0x0004000;
- switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
- demph_reg_value = 0x2B405555;
- uniqtranscale_reg_value = 0x552AB83A;
- break;
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
- demph_reg_value = 0x2B404040;
- uniqtranscale_reg_value = 0x5548B83A;
- break;
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_2:
- demph_reg_value = 0x2B245555;
- uniqtranscale_reg_value = 0x5560B83A;
- break;
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_3:
- demph_reg_value = 0x2B405555;
- uniqtranscale_reg_value = 0x5598DA3A;
- break;
- default:
- return;
- }
- break;
- case DP_TRAIN_PRE_EMPH_LEVEL_1:
- preemph_reg_value = 0x0002000;
- switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
- demph_reg_value = 0x2B404040;
- uniqtranscale_reg_value = 0x5552B83A;
- break;
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
- demph_reg_value = 0x2B404848;
- uniqtranscale_reg_value = 0x5580B83A;
- break;
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_2:
- demph_reg_value = 0x2B404040;
- uniqtranscale_reg_value = 0x55ADDA3A;
- break;
- default:
- return;
- }
- break;
- case DP_TRAIN_PRE_EMPH_LEVEL_2:
- preemph_reg_value = 0x0000000;
- switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
- demph_reg_value = 0x2B305555;
- uniqtranscale_reg_value = 0x5570B83A;
- break;
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
- demph_reg_value = 0x2B2B4040;
- uniqtranscale_reg_value = 0x55ADDA3A;
- break;
- default:
- return;
- }
- break;
- case DP_TRAIN_PRE_EMPH_LEVEL_3:
- preemph_reg_value = 0x0006000;
- switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
- demph_reg_value = 0x1B405555;
- uniqtranscale_reg_value = 0x55ADDA3A;
- break;
- default:
- return;
- }
- break;
- default:
- return;
- }
-
- vlv_set_phy_signal_level(encoder, crtc_state,
- demph_reg_value, preemph_reg_value,
- uniqtranscale_reg_value, 0);
-}
-
-static void chv_set_signal_levels(struct intel_dp *intel_dp,
- const struct intel_crtc_state *crtc_state)
-{
- struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
- u32 deemph_reg_value, margin_reg_value;
- bool uniq_trans_scale = false;
- u8 train_set = intel_dp->train_set[0];
-
- switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) {
- case DP_TRAIN_PRE_EMPH_LEVEL_0:
- switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
- deemph_reg_value = 128;
- margin_reg_value = 52;
- break;
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
- deemph_reg_value = 128;
- margin_reg_value = 77;
- break;
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_2:
- deemph_reg_value = 128;
- margin_reg_value = 102;
- break;
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_3:
- deemph_reg_value = 128;
- margin_reg_value = 154;
- uniq_trans_scale = true;
- break;
- default:
- return;
- }
- break;
- case DP_TRAIN_PRE_EMPH_LEVEL_1:
- switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
- deemph_reg_value = 85;
- margin_reg_value = 78;
- break;
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
- deemph_reg_value = 85;
- margin_reg_value = 116;
- break;
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_2:
- deemph_reg_value = 85;
- margin_reg_value = 154;
- break;
- default:
- return;
- }
- break;
- case DP_TRAIN_PRE_EMPH_LEVEL_2:
- switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
- deemph_reg_value = 64;
- margin_reg_value = 104;
- break;
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
- deemph_reg_value = 64;
- margin_reg_value = 154;
- break;
- default:
- return;
- }
- break;
- case DP_TRAIN_PRE_EMPH_LEVEL_3:
- switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
- deemph_reg_value = 43;
- margin_reg_value = 154;
- break;
- default:
- return;
- }
- break;
- default:
- return;
- }
-
- chv_set_phy_signal_level(encoder, crtc_state,
- deemph_reg_value, margin_reg_value,
- uniq_trans_scale);
-}
-
-static u32 g4x_signal_levels(u8 train_set)
-{
- u32 signal_levels = 0;
-
- switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_0:
- default:
- signal_levels |= DP_VOLTAGE_0_4;
- break;
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_1:
- signal_levels |= DP_VOLTAGE_0_6;
- break;
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_2:
- signal_levels |= DP_VOLTAGE_0_8;
- break;
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_3:
- signal_levels |= DP_VOLTAGE_1_2;
- break;
- }
- switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) {
- case DP_TRAIN_PRE_EMPH_LEVEL_0:
- default:
- signal_levels |= DP_PRE_EMPHASIS_0;
- break;
- case DP_TRAIN_PRE_EMPH_LEVEL_1:
- signal_levels |= DP_PRE_EMPHASIS_3_5;
- break;
- case DP_TRAIN_PRE_EMPH_LEVEL_2:
- signal_levels |= DP_PRE_EMPHASIS_6;
- break;
- case DP_TRAIN_PRE_EMPH_LEVEL_3:
- signal_levels |= DP_PRE_EMPHASIS_9_5;
- break;
- }
- return signal_levels;
-}
-
-static void
-g4x_set_signal_levels(struct intel_dp *intel_dp,
- const struct intel_crtc_state *crtc_state)
-{
- struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
- u8 train_set = intel_dp->train_set[0];
- u32 signal_levels;
-
- signal_levels = g4x_signal_levels(train_set);
-
- drm_dbg_kms(&dev_priv->drm, "Using signal levels %08x\n",
- signal_levels);
-
- intel_dp->DP &= ~(DP_VOLTAGE_MASK | DP_PRE_EMPHASIS_MASK);
- intel_dp->DP |= signal_levels;
-
- intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
- intel_de_posting_read(dev_priv, intel_dp->output_reg);
-}
-
-/* SNB CPU eDP voltage swing and pre-emphasis control */
-static u32 snb_cpu_edp_signal_levels(u8 train_set)
-{
- u8 signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK |
- DP_TRAIN_PRE_EMPHASIS_MASK);
-
- switch (signal_levels) {
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0:
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0:
- return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B;
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1:
- return EDP_LINK_TRAIN_400MV_3_5DB_SNB_B;
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2:
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2:
- return EDP_LINK_TRAIN_400_600MV_6DB_SNB_B;
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1:
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1:
- return EDP_LINK_TRAIN_600_800MV_3_5DB_SNB_B;
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0:
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0:
- return EDP_LINK_TRAIN_800_1200MV_0DB_SNB_B;
- default:
- MISSING_CASE(signal_levels);
- return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B;
- }
+
+ return intel_hdmi_dsc_get_bpp(pcon_fractional_bpp, slice_width,
+ num_slices, output_format, hdmi_all_bpp,
+ hdmi_max_chunk_bytes);
}
-static void
-snb_cpu_edp_set_signal_levels(struct intel_dp *intel_dp,
- const struct intel_crtc_state *crtc_state)
+void
+intel_dp_pcon_dsc_configure(struct intel_dp *intel_dp,
+ const struct intel_crtc_state *crtc_state)
{
- struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
- u8 train_set = intel_dp->train_set[0];
- u32 signal_levels;
+ u8 pps_param[6];
+ int slice_height;
+ int slice_width;
+ int num_slices;
+ int bits_per_pixel;
+ int ret;
+ struct intel_connector *intel_connector = intel_dp->attached_connector;
+ struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+ struct drm_connector *connector;
+ bool hdmi_is_dsc_1_2;
- signal_levels = snb_cpu_edp_signal_levels(train_set);
+ if (!intel_dp_is_hdmi_2_1_sink(intel_dp))
+ return;
- drm_dbg_kms(&dev_priv->drm, "Using signal levels %08x\n",
- signal_levels);
+ if (!intel_connector)
+ return;
+ connector = &intel_connector->base;
+ hdmi_is_dsc_1_2 = connector->display_info.hdmi.dsc_cap.v_1p2;
- intel_dp->DP &= ~EDP_LINK_TRAIN_VOL_EMP_MASK_SNB;
- intel_dp->DP |= signal_levels;
+ if (!drm_dp_pcon_enc_is_dsc_1_2(intel_dp->pcon_dsc_dpcd) ||
+ !hdmi_is_dsc_1_2)
+ return;
- intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
- intel_de_posting_read(dev_priv, intel_dp->output_reg);
-}
+ slice_height = intel_dp_pcon_dsc_enc_slice_height(crtc_state);
+ if (!slice_height)
+ return;
-/* IVB CPU eDP voltage swing and pre-emphasis control */
-static u32 ivb_cpu_edp_signal_levels(u8 train_set)
-{
- u8 signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK |
- DP_TRAIN_PRE_EMPHASIS_MASK);
+ num_slices = intel_dp_pcon_dsc_enc_slices(intel_dp, crtc_state);
+ if (!num_slices)
+ return;
- switch (signal_levels) {
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0:
- return EDP_LINK_TRAIN_400MV_0DB_IVB;
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1:
- return EDP_LINK_TRAIN_400MV_3_5DB_IVB;
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2:
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2:
- return EDP_LINK_TRAIN_400MV_6DB_IVB;
+ slice_width = DIV_ROUND_UP(crtc_state->hw.adjusted_mode.hdisplay,
+ num_slices);
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0:
- return EDP_LINK_TRAIN_600MV_0DB_IVB;
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1:
- return EDP_LINK_TRAIN_600MV_3_5DB_IVB;
+ bits_per_pixel = intel_dp_pcon_dsc_enc_bpp(intel_dp, crtc_state,
+ num_slices, slice_width);
+ if (!bits_per_pixel)
+ return;
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0:
- return EDP_LINK_TRAIN_800MV_0DB_IVB;
- case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1:
- return EDP_LINK_TRAIN_800MV_3_5DB_IVB;
+ pps_param[0] = slice_height & 0xFF;
+ pps_param[1] = slice_height >> 8;
+ pps_param[2] = slice_width & 0xFF;
+ pps_param[3] = slice_width >> 8;
+ pps_param[4] = bits_per_pixel & 0xFF;
+ pps_param[5] = (bits_per_pixel >> 8) & 0x3;
- default:
- MISSING_CASE(signal_levels);
- return EDP_LINK_TRAIN_500MV_0DB_IVB;
- }
+ ret = drm_dp_pcon_pps_override_param(&intel_dp->aux, pps_param);
+ if (ret < 0)
+ drm_dbg_kms(&i915->drm, "Failed to set pcon DSC\n");
}
-static void
-ivb_cpu_edp_set_signal_levels(struct intel_dp *intel_dp,
- const struct intel_crtc_state *crtc_state)
+void intel_dp_configure_protocol_converter(struct intel_dp *intel_dp,
+ const struct intel_crtc_state *crtc_state)
{
- struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
- u8 train_set = intel_dp->train_set[0];
- u32 signal_levels;
-
- signal_levels = ivb_cpu_edp_signal_levels(train_set);
-
- drm_dbg_kms(&dev_priv->drm, "Using signal levels %08x\n",
- signal_levels);
+ struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+ u8 tmp;
- intel_dp->DP &= ~EDP_LINK_TRAIN_VOL_EMP_MASK_IVB;
- intel_dp->DP |= signal_levels;
+ if (intel_dp->dpcd[DP_DPCD_REV] < 0x13)
+ return;
- intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
- intel_de_posting_read(dev_priv, intel_dp->output_reg);
-}
+ if (!drm_dp_is_branch(intel_dp->dpcd))
+ return;
-static void
-intel_dp_link_down(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_dp *intel_dp = enc_to_intel_dp(encoder);
- struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
- enum port port = encoder->port;
- u32 DP = intel_dp->DP;
+ tmp = intel_dp->has_hdmi_sink ?
+ DP_HDMI_DVI_OUTPUT_CONFIG : 0;
- if (drm_WARN_ON(&dev_priv->drm,
- (intel_de_read(dev_priv, intel_dp->output_reg) &
- DP_PORT_EN) == 0))
- return;
+ if (drm_dp_dpcd_writeb(&intel_dp->aux,
+ DP_PROTOCOL_CONVERTER_CONTROL_0, tmp) != 1)
+ drm_dbg_kms(&i915->drm, "Failed to set protocol converter HDMI mode to %s\n",
+ enableddisabled(intel_dp->has_hdmi_sink));
- drm_dbg_kms(&dev_priv->drm, "\n");
+ tmp = crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR444 &&
+ intel_dp->dfp.ycbcr_444_to_420 ? DP_CONVERSION_TO_YCBCR420_ENABLE : 0;
- if ((IS_IVYBRIDGE(dev_priv) && port == PORT_A) ||
- (HAS_PCH_CPT(dev_priv) && port != PORT_A)) {
- DP &= ~DP_LINK_TRAIN_MASK_CPT;
- DP |= DP_LINK_TRAIN_PAT_IDLE_CPT;
- } else {
- DP &= ~DP_LINK_TRAIN_MASK;
- DP |= DP_LINK_TRAIN_PAT_IDLE;
- }
- intel_de_write(dev_priv, intel_dp->output_reg, DP);
- intel_de_posting_read(dev_priv, intel_dp->output_reg);
+ if (drm_dp_dpcd_writeb(&intel_dp->aux,
+ DP_PROTOCOL_CONVERTER_CONTROL_1, tmp) != 1)
+ drm_dbg_kms(&i915->drm,
+ "Failed to set protocol converter YCbCr 4:2:0 conversion mode to %s\n",
+ enableddisabled(intel_dp->dfp.ycbcr_444_to_420));
- DP &= ~(DP_PORT_EN | DP_AUDIO_OUTPUT_ENABLE);
- intel_de_write(dev_priv, intel_dp->output_reg, DP);
- intel_de_posting_read(dev_priv, intel_dp->output_reg);
+ tmp = 0;
+ if (intel_dp->dfp.rgb_to_ycbcr) {
+ bool bt2020, bt709;
- /*
- * HW workaround for IBX, we need to move the port
- * to transcoder A after disabling it to allow the
- * matching HDMI port to be enabled on transcoder A.
- */
- if (HAS_PCH_IBX(dev_priv) && crtc->pipe == PIPE_B && port != PORT_A) {
/*
- * We get CPU/PCH FIFO underruns on the other pipe when
- * doing the workaround. Sweep them under the rug.
+ * FIXME: Currently if userspace selects BT2020 or BT709, but PCON supports only
+ * RGB->YCbCr for BT601 colorspace, we go ahead with BT601, as default.
+ *
*/
- intel_set_cpu_fifo_underrun_reporting(dev_priv, PIPE_A, false);
- intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, false);
-
- /* always enable with pattern 1 (as per spec) */
- DP &= ~(DP_PIPE_SEL_MASK | DP_LINK_TRAIN_MASK);
- DP |= DP_PORT_EN | DP_PIPE_SEL(PIPE_A) |
- DP_LINK_TRAIN_PAT_1;
- intel_de_write(dev_priv, intel_dp->output_reg, DP);
- intel_de_posting_read(dev_priv, intel_dp->output_reg);
-
- DP &= ~DP_PORT_EN;
- intel_de_write(dev_priv, intel_dp->output_reg, DP);
- intel_de_posting_read(dev_priv, intel_dp->output_reg);
+ tmp = DP_CONVERSION_BT601_RGB_YCBCR_ENABLE;
- 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);
+ bt2020 = drm_dp_downstream_rgb_to_ycbcr_conversion(intel_dp->dpcd,
+ intel_dp->downstream_ports,
+ DP_DS_HDMI_BT2020_RGB_YCBCR_CONV);
+ bt709 = drm_dp_downstream_rgb_to_ycbcr_conversion(intel_dp->dpcd,
+ intel_dp->downstream_ports,
+ DP_DS_HDMI_BT709_RGB_YCBCR_CONV);
+ switch (crtc_state->infoframes.vsc.colorimetry) {
+ case DP_COLORIMETRY_BT2020_RGB:
+ case DP_COLORIMETRY_BT2020_YCC:
+ if (bt2020)
+ tmp = DP_CONVERSION_BT2020_RGB_YCBCR_ENABLE;
+ break;
+ case DP_COLORIMETRY_BT709_YCC:
+ case DP_COLORIMETRY_XVYCC_709:
+ if (bt709)
+ tmp = DP_CONVERSION_BT709_RGB_YCBCR_ENABLE;
+ break;
+ default:
+ break;
+ }
}
- msleep(intel_dp->pps.panel_power_down_delay);
-
- intel_dp->DP = DP;
-
- if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
- intel_wakeref_t wakeref;
-
- with_intel_pps_lock(intel_dp, wakeref)
- intel_dp->pps.active_pipe = INVALID_PIPE;
- }
+ if (drm_dp_pcon_convert_rgb_to_ycbcr(&intel_dp->aux, tmp) < 0)
+ drm_dbg_kms(&i915->drm,
+ "Failed to set protocol converter RGB->YCbCr conversion mode to %s\n",
+ enableddisabled(tmp ? true : false));
}
+
bool intel_dp_get_colorimetry_status(struct intel_dp *intel_dp)
{
u8 dprx = 0;
"Acquiring modeset locks failed with %i\n", ret);
}
-/*
- * If display is now connected check links status,
- * there has been known issues of link loss triggering
- * long pulse.
- *
- * Some sinks (eg. ASUS PB287Q) seem to perform some
- * weird HPD ping pong during modesets. So we can apparently
- * end up with HPD going low during a modeset, and then
- * going back up soon after. And once that happens we must
- * retrain the link to get a picture. That's in case no
- * userspace component reacted to intermittent HPD dip.
- */
-static enum intel_hotplug_state
-intel_dp_hotplug(struct intel_encoder *encoder,
- struct intel_connector *connector)
-{
- struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
- struct drm_modeset_acquire_ctx ctx;
- enum intel_hotplug_state state;
- int ret;
-
- if (intel_dp->compliance.test_active &&
- intel_dp->compliance.test_type == DP_TEST_LINK_PHY_TEST_PATTERN) {
- intel_dp_phy_test(encoder);
- /* just do the PHY test and nothing else */
- return INTEL_HOTPLUG_UNCHANGED;
- }
-
- state = intel_encoder_hotplug(encoder, connector);
-
- drm_modeset_acquire_init(&ctx, 0);
-
- for (;;) {
- ret = intel_dp_retrain_link(encoder, &ctx);
-
- if (ret == -EDEADLK) {
- drm_modeset_backoff(&ctx);
- continue;
- }
-
- break;
- }
-
- drm_modeset_drop_locks(&ctx);
- drm_modeset_acquire_fini(&ctx);
- drm_WARN(encoder->base.dev, ret,
- "Acquiring modeset locks failed with %i\n", ret);
-
- /*
- * Keeping it consistent with intel_ddi_hotplug() and
- * intel_hdmi_hotplug().
- */
- if (state == INTEL_HOTPLUG_UNCHANGED && !connector->hotplug_retries)
- state = INTEL_HOTPLUG_RETRY;
-
- return state;
-}
-
static void intel_dp_check_device_service_irq(struct intel_dp *intel_dp)
{
struct drm_i915_private *i915 = dp_to_i915(intel_dp);
return connector_status_connected;
}
-static bool ibx_digital_port_connected(struct intel_encoder *encoder)
-{
- struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
- u32 bit = dev_priv->hotplug.pch_hpd[encoder->hpd_pin];
-
- return intel_de_read(dev_priv, SDEISR) & bit;
-}
-
-static bool g4x_digital_port_connected(struct intel_encoder *encoder)
-{
- struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
- u32 bit;
-
- switch (encoder->hpd_pin) {
- case HPD_PORT_B:
- bit = PORTB_HOTPLUG_LIVE_STATUS_G4X;
- break;
- case HPD_PORT_C:
- bit = PORTC_HOTPLUG_LIVE_STATUS_G4X;
- break;
- case HPD_PORT_D:
- bit = PORTD_HOTPLUG_LIVE_STATUS_G4X;
- break;
- default:
- MISSING_CASE(encoder->hpd_pin);
- return false;
- }
-
- return intel_de_read(dev_priv, PORT_HOTPLUG_STAT) & bit;
-}
-
-static bool gm45_digital_port_connected(struct intel_encoder *encoder)
-{
- struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
- u32 bit;
-
- switch (encoder->hpd_pin) {
- case HPD_PORT_B:
- bit = PORTB_HOTPLUG_LIVE_STATUS_GM45;
- break;
- case HPD_PORT_C:
- bit = PORTC_HOTPLUG_LIVE_STATUS_GM45;
- break;
- case HPD_PORT_D:
- bit = PORTD_HOTPLUG_LIVE_STATUS_GM45;
- break;
- default:
- MISSING_CASE(encoder->hpd_pin);
- return false;
- }
-
- return intel_de_read(dev_priv, PORT_HOTPLUG_STAT) & bit;
-}
-
-static bool ilk_digital_port_connected(struct intel_encoder *encoder)
-{
- struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
- u32 bit = dev_priv->hotplug.hpd[encoder->hpd_pin];
-
- return intel_de_read(dev_priv, DEISR) & bit;
-}
-
/*
* intel_digital_port_connected - is the specified port connected?
* @encoder: intel_encoder
intel_dp_aux_fini(intel_dp);
}
-static void intel_dp_encoder_destroy(struct drm_encoder *encoder)
-{
- intel_dp_encoder_flush_work(encoder);
-
- drm_encoder_cleanup(encoder);
- kfree(enc_to_dig_port(to_intel_encoder(encoder)));
-}
-
void intel_dp_encoder_suspend(struct intel_encoder *intel_encoder)
{
struct intel_dp *intel_dp = enc_to_intel_dp(intel_encoder);
intel_pps_wait_power_cycle(intel_dp);
}
-static enum pipe vlv_active_pipe(struct intel_dp *intel_dp)
-{
- struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
- struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
- enum pipe pipe;
-
- if (intel_dp_port_enabled(dev_priv, intel_dp->output_reg,
- encoder->port, &pipe))
- return pipe;
-
- return INVALID_PIPE;
-}
-
-static void intel_dp_encoder_reset(struct drm_encoder *encoder)
-{
- struct drm_i915_private *dev_priv = to_i915(encoder->dev);
- struct intel_dp *intel_dp = enc_to_intel_dp(to_intel_encoder(encoder));
-
- intel_dp->DP = intel_de_read(dev_priv, intel_dp->output_reg);
-
- intel_dp->reset_link_params = true;
-
- if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
- intel_wakeref_t wakeref;
-
- with_intel_pps_lock(intel_dp, wakeref)
- intel_dp->pps.active_pipe = vlv_active_pipe(intel_dp);
- }
-
- intel_pps_encoder_reset(intel_dp);
-}
-
static int intel_modeset_tile_group(struct intel_atomic_state *state,
int tile_group_id)
{
.atomic_check = intel_dp_connector_atomic_check,
};
-static const struct drm_encoder_funcs intel_dp_enc_funcs = {
- .reset = intel_dp_encoder_reset,
- .destroy = intel_dp_encoder_destroy,
-};
-
enum irqreturn
intel_dp_hpd_pulse(struct intel_digital_port *dig_port, bool long_hpd)
{
return false;
}
-bool intel_dp_init(struct drm_i915_private *dev_priv,
- i915_reg_t output_reg,
- enum port port)
-{
- struct intel_digital_port *dig_port;
- struct intel_encoder *intel_encoder;
- struct drm_encoder *encoder;
- struct intel_connector *intel_connector;
-
- dig_port = kzalloc(sizeof(*dig_port), GFP_KERNEL);
- if (!dig_port)
- return false;
-
- intel_connector = intel_connector_alloc();
- if (!intel_connector)
- goto err_connector_alloc;
-
- intel_encoder = &dig_port->base;
- encoder = &intel_encoder->base;
-
- mutex_init(&dig_port->hdcp_mutex);
-
- if (drm_encoder_init(&dev_priv->drm, &intel_encoder->base,
- &intel_dp_enc_funcs, DRM_MODE_ENCODER_TMDS,
- "DP %c", port_name(port)))
- goto err_encoder_init;
-
- intel_encoder->hotplug = intel_dp_hotplug;
- intel_encoder->compute_config = intel_dp_compute_config;
- intel_encoder->get_hw_state = intel_dp_get_hw_state;
- intel_encoder->get_config = intel_dp_get_config;
- intel_encoder->sync_state = intel_dp_sync_state;
- intel_encoder->initial_fastset_check = intel_dp_initial_fastset_check;
- intel_encoder->update_pipe = intel_panel_update_backlight;
- intel_encoder->suspend = intel_dp_encoder_suspend;
- intel_encoder->shutdown = intel_dp_encoder_shutdown;
- if (IS_CHERRYVIEW(dev_priv)) {
- intel_encoder->pre_pll_enable = chv_dp_pre_pll_enable;
- intel_encoder->pre_enable = chv_pre_enable_dp;
- intel_encoder->enable = vlv_enable_dp;
- intel_encoder->disable = vlv_disable_dp;
- intel_encoder->post_disable = chv_post_disable_dp;
- intel_encoder->post_pll_disable = chv_dp_post_pll_disable;
- } else if (IS_VALLEYVIEW(dev_priv)) {
- intel_encoder->pre_pll_enable = vlv_dp_pre_pll_enable;
- intel_encoder->pre_enable = vlv_pre_enable_dp;
- intel_encoder->enable = vlv_enable_dp;
- intel_encoder->disable = vlv_disable_dp;
- intel_encoder->post_disable = vlv_post_disable_dp;
- } else {
- intel_encoder->pre_enable = g4x_pre_enable_dp;
- intel_encoder->enable = g4x_enable_dp;
- intel_encoder->disable = g4x_disable_dp;
- intel_encoder->post_disable = g4x_post_disable_dp;
- }
-
- if ((IS_IVYBRIDGE(dev_priv) && port == PORT_A) ||
- (HAS_PCH_CPT(dev_priv) && port != PORT_A))
- dig_port->dp.set_link_train = cpt_set_link_train;
- else
- dig_port->dp.set_link_train = g4x_set_link_train;
-
- if (IS_CHERRYVIEW(dev_priv))
- dig_port->dp.set_signal_levels = chv_set_signal_levels;
- else if (IS_VALLEYVIEW(dev_priv))
- dig_port->dp.set_signal_levels = vlv_set_signal_levels;
- else if (IS_IVYBRIDGE(dev_priv) && port == PORT_A)
- dig_port->dp.set_signal_levels = ivb_cpu_edp_set_signal_levels;
- else if (IS_GEN(dev_priv, 6) && port == PORT_A)
- dig_port->dp.set_signal_levels = snb_cpu_edp_set_signal_levels;
- else
- dig_port->dp.set_signal_levels = g4x_set_signal_levels;
-
- if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv) ||
- (HAS_PCH_SPLIT(dev_priv) && port != PORT_A)) {
- dig_port->dp.preemph_max = intel_dp_preemph_max_3;
- dig_port->dp.voltage_max = intel_dp_voltage_max_3;
- } else {
- dig_port->dp.preemph_max = intel_dp_preemph_max_2;
- dig_port->dp.voltage_max = intel_dp_voltage_max_2;
- }
-
- dig_port->dp.output_reg = output_reg;
- dig_port->max_lanes = 4;
-
- intel_encoder->type = INTEL_OUTPUT_DP;
- intel_encoder->power_domain = intel_port_to_power_domain(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 = 0;
- intel_encoder->port = port;
- intel_encoder->hpd_pin = intel_hpd_pin_default(dev_priv, port);
-
- dig_port->hpd_pulse = intel_dp_hpd_pulse;
-
- if (HAS_GMCH(dev_priv)) {
- if (IS_GM45(dev_priv))
- dig_port->connected = gm45_digital_port_connected;
- else
- dig_port->connected = g4x_digital_port_connected;
- } else {
- if (port == PORT_A)
- dig_port->connected = ilk_digital_port_connected;
- else
- dig_port->connected = ibx_digital_port_connected;
- }
-
- if (port != PORT_A)
- intel_infoframe_init(dig_port);
-
- dig_port->aux_ch = intel_bios_port_aux_ch(dev_priv, port);
- if (!intel_dp_init_connector(dig_port, intel_connector))
- goto err_init_connector;
-
- return true;
-
-err_init_connector:
- drm_encoder_cleanup(encoder);
-err_encoder_init:
- kfree(intel_connector);
-err_connector_alloc:
- kfree(dig_port);
- return false;
-}
-
void intel_dp_mst_suspend(struct drm_i915_private *dev_priv)
{
struct intel_encoder *encoder;
projects / platform / kernel / linux-rpi.git / commitdiff