drm/i915: Move intel_dp->lane_count into pipe_config
Currently we clobber intel_dp->lane_count in compute config, which means
after a rejected modeset we may no longer be able to retrain the current
link. Move lane_count into pipe_config to avoid that.
v2: Add missing ':' to the pipe config debug dump
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Sivakumar Thulasimani <sivakumar.thulasimani@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 88f20cc..f22aca3 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -4108,6 +4108,7 @@
/* How many wires to use. I guess 3 was too hard */
#define DP_PORT_WIDTH(width) (((width) - 1) << 19)
#define DP_PORT_WIDTH_MASK (7 << 19)
+#define DP_PORT_WIDTH_SHIFT 19
/* Mystic DPCD version 1.1 special mode */
#define DP_ENHANCED_FRAMING (1 << 18)
@@ -7148,6 +7149,8 @@
#define DDI_BUF_IS_IDLE (1<<7)
#define DDI_A_4_LANES (1<<4)
#define DDI_PORT_WIDTH(width) (((width) - 1) << 1)
+#define DDI_PORT_WIDTH_MASK (7 << 1)
+#define DDI_PORT_WIDTH_SHIFT 1
#define DDI_INIT_DISPLAY_DETECTED (1<<0)
/* DDI Buffer Translations */
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index b6d1ab2..56d778f 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -728,11 +728,11 @@
struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
struct intel_digital_port *intel_dig_port =
enc_to_dig_port(&encoder->base);
+ struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
intel_dp->DP = intel_dig_port->saved_port_bits |
DDI_BUF_CTL_ENABLE | DDI_BUF_TRANS_SELECT(0);
- intel_dp->DP |= DDI_PORT_WIDTH(intel_dp->lane_count);
-
+ intel_dp->DP |= DDI_PORT_WIDTH(crtc->config->lane_count);
}
static struct intel_encoder *
@@ -1918,7 +1918,7 @@
} else
temp |= TRANS_DDI_MODE_SELECT_DP_SST;
- temp |= DDI_PORT_WIDTH(intel_dp->lane_count);
+ temp |= DDI_PORT_WIDTH(intel_crtc->config->lane_count);
} else if (type == INTEL_OUTPUT_DP_MST) {
struct intel_dp *intel_dp = &enc_to_mst(encoder)->primary->dp;
@@ -1927,7 +1927,7 @@
} else
temp |= TRANS_DDI_MODE_SELECT_DP_SST;
- temp |= DDI_PORT_WIDTH(intel_dp->lane_count);
+ temp |= DDI_PORT_WIDTH(intel_crtc->config->lane_count);
} else {
WARN(1, "Invalid encoder type %d for pipe %c\n",
intel_encoder->type, pipe_name(pipe));
@@ -3094,6 +3094,8 @@
case TRANS_DDI_MODE_SELECT_DP_SST:
case TRANS_DDI_MODE_SELECT_DP_MST:
pipe_config->has_dp_encoder = true;
+ pipe_config->lane_count =
+ ((temp & DDI_PORT_WIDTH_MASK) >> DDI_PORT_WIDTH_SHIFT) + 1;
intel_dp_get_m_n(intel_crtc, pipe_config);
break;
default:
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index dc3e6b2..40e70f2 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -11902,14 +11902,16 @@
pipe_config->fdi_m_n.gmch_m, pipe_config->fdi_m_n.gmch_n,
pipe_config->fdi_m_n.link_m, pipe_config->fdi_m_n.link_n,
pipe_config->fdi_m_n.tu);
- DRM_DEBUG_KMS("dp: %i, gmch_m: %u, gmch_n: %u, link_m: %u, link_n: %u, tu: %u\n",
+ DRM_DEBUG_KMS("dp: %i, lanes: %i, gmch_m: %u, gmch_n: %u, link_m: %u, link_n: %u, tu: %u\n",
pipe_config->has_dp_encoder,
+ pipe_config->lane_count,
pipe_config->dp_m_n.gmch_m, pipe_config->dp_m_n.gmch_n,
pipe_config->dp_m_n.link_m, pipe_config->dp_m_n.link_n,
pipe_config->dp_m_n.tu);
- DRM_DEBUG_KMS("dp: %i, gmch_m2: %u, gmch_n2: %u, link_m2: %u, link_n2: %u, tu2: %u\n",
+ DRM_DEBUG_KMS("dp: %i, lanes: %i, gmch_m2: %u, gmch_n2: %u, link_m2: %u, link_n2: %u, tu2: %u\n",
pipe_config->has_dp_encoder,
+ pipe_config->lane_count,
pipe_config->dp_m2_n2.gmch_m,
pipe_config->dp_m2_n2.gmch_n,
pipe_config->dp_m2_n2.link_m,
@@ -12416,6 +12418,7 @@
PIPE_CONF_CHECK_M_N(fdi_m_n);
PIPE_CONF_CHECK_I(has_dp_encoder);
+ PIPE_CONF_CHECK_I(lane_count);
if (INTEL_INFO(dev)->gen < 8) {
PIPE_CONF_CHECK_M_N(dp_m_n);
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 3a9b8e4..3d3a908 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1499,7 +1499,7 @@
intel_dp->limited_color_range;
}
- intel_dp->lane_count = lane_count;
+ pipe_config->lane_count = lane_count;
if (intel_dp->num_sink_rates) {
intel_dp->link_bw = 0;
@@ -1515,7 +1515,7 @@
pipe_config->port_clock = common_rates[clock];
DRM_DEBUG_KMS("DP link bw %02x lane count %d clock %d bpp %d\n",
- intel_dp->link_bw, intel_dp->lane_count,
+ intel_dp->link_bw, pipe_config->lane_count,
pipe_config->port_clock, bpp);
DRM_DEBUG_KMS("DP link bw required %i available %i\n",
mode_rate, link_avail);
@@ -1610,7 +1610,7 @@
/* 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(intel_dp->lane_count);
+ intel_dp->DP |= DP_PORT_WIDTH(crtc->config->lane_count);
if (crtc->config->has_audio)
intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE;
@@ -2313,6 +2313,9 @@
pipe_config->has_dp_encoder = 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) {
@@ -3338,13 +3341,15 @@
intel_get_adjust_train(struct intel_dp *intel_dp,
const uint8_t link_status[DP_LINK_STATUS_SIZE])
{
+ struct intel_crtc *crtc =
+ to_intel_crtc(dp_to_dig_port(intel_dp)->base.base.crtc);
uint8_t v = 0;
uint8_t p = 0;
int lane;
uint8_t voltage_max;
uint8_t preemph_max;
- for (lane = 0; lane < intel_dp->lane_count; lane++) {
+ for (lane = 0; lane < crtc->config->lane_count; lane++) {
uint8_t this_v = drm_dp_get_adjust_request_voltage(link_status, lane);
uint8_t this_p = drm_dp_get_adjust_request_pre_emphasis(link_status, lane);
@@ -3513,8 +3518,10 @@
uint8_t dp_train_pat)
{
struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
- struct drm_device *dev = intel_dig_port->base.base.dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_private *dev_priv =
+ to_i915(intel_dig_port->base.base.dev);
+ struct intel_crtc *crtc =
+ to_intel_crtc(intel_dig_port->base.base.crtc);
uint8_t buf[sizeof(intel_dp->train_set) + 1];
int ret, len;
@@ -3530,8 +3537,8 @@
len = 1;
} else {
/* DP_TRAINING_LANEx_SET follow DP_TRAINING_PATTERN_SET */
- memcpy(buf + 1, intel_dp->train_set, intel_dp->lane_count);
- len = intel_dp->lane_count + 1;
+ memcpy(buf + 1, intel_dp->train_set, crtc->config->lane_count);
+ len = crtc->config->lane_count + 1;
}
ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_PATTERN_SET,
@@ -3555,8 +3562,10 @@
const uint8_t link_status[DP_LINK_STATUS_SIZE])
{
struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
- struct drm_device *dev = intel_dig_port->base.base.dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_private *dev_priv =
+ to_i915(intel_dig_port->base.base.dev);
+ struct intel_crtc *crtc =
+ to_intel_crtc(intel_dig_port->base.base.crtc);
int ret;
intel_get_adjust_train(intel_dp, link_status);
@@ -3566,9 +3575,9 @@
POSTING_READ(intel_dp->output_reg);
ret = drm_dp_dpcd_write(&intel_dp->aux, DP_TRAINING_LANE0_SET,
- intel_dp->train_set, intel_dp->lane_count);
+ intel_dp->train_set, crtc->config->lane_count);
- return ret == intel_dp->lane_count;
+ return ret == crtc->config->lane_count;
}
static void intel_dp_set_idle_link_train(struct intel_dp *intel_dp)
@@ -3607,6 +3616,8 @@
intel_dp_start_link_train(struct intel_dp *intel_dp)
{
struct drm_encoder *encoder = &dp_to_dig_port(intel_dp)->base.base;
+ struct intel_crtc *crtc =
+ to_intel_crtc(dp_to_dig_port(intel_dp)->base.base.crtc);
struct drm_device *dev = encoder->dev;
int i;
uint8_t voltage;
@@ -3619,7 +3630,7 @@
/* Write the link configuration data */
link_config[0] = intel_dp->link_bw;
- link_config[1] = intel_dp->lane_count;
+ link_config[1] = crtc->config->lane_count;
if (drm_dp_enhanced_frame_cap(intel_dp->dpcd))
link_config[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN;
drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_BW_SET, link_config, 2);
@@ -3653,7 +3664,7 @@
break;
}
- if (drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) {
+ if (drm_dp_clock_recovery_ok(link_status, crtc->config->lane_count)) {
DRM_DEBUG_KMS("clock recovery OK\n");
break;
}
@@ -3676,10 +3687,10 @@
}
/* Check to see if we've tried the max voltage */
- for (i = 0; i < intel_dp->lane_count; i++)
+ for (i = 0; i < crtc->config->lane_count; i++)
if ((intel_dp->train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0)
break;
- if (i == intel_dp->lane_count) {
+ if (i == crtc->config->lane_count) {
++loop_tries;
if (loop_tries == 5) {
DRM_ERROR("too many full retries, give up\n");
@@ -3716,6 +3727,8 @@
void
intel_dp_complete_link_train(struct intel_dp *intel_dp)
{
+ struct intel_crtc *crtc =
+ to_intel_crtc(dp_to_dig_port(intel_dp)->base.base.crtc);
bool channel_eq = false;
int tries, cr_tries;
uint32_t DP = intel_dp->DP;
@@ -3751,7 +3764,8 @@
}
/* Make sure clock is still ok */
- if (!drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) {
+ if (!drm_dp_clock_recovery_ok(link_status,
+ crtc->config->lane_count)) {
intel_dp->train_set_valid = false;
intel_dp_start_link_train(intel_dp);
intel_dp_set_link_train(intel_dp, &DP,
@@ -3761,7 +3775,8 @@
continue;
}
- if (drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) {
+ if (drm_dp_channel_eq_ok(link_status,
+ crtc->config->lane_count)) {
channel_eq = true;
break;
}
@@ -4259,6 +4274,8 @@
static int
intel_dp_check_mst_status(struct intel_dp *intel_dp)
{
+ struct intel_crtc *crtc =
+ to_intel_crtc(dp_to_dig_port(intel_dp)->base.base.crtc);
bool bret;
if (intel_dp->is_mst) {
@@ -4271,7 +4288,8 @@
if (bret == true) {
/* check link status - esi[10] = 0x200c */
- if (intel_dp->active_mst_links && !drm_dp_channel_eq_ok(&esi[10], intel_dp->lane_count)) {
+ if (intel_dp->active_mst_links &&
+ !drm_dp_channel_eq_ok(&esi[10], crtc->config->lane_count)) {
DRM_DEBUG_KMS("channel EQ not ok, retraining\n");
intel_dp_start_link_train(intel_dp);
intel_dp_complete_link_train(intel_dp);
@@ -4326,6 +4344,8 @@
{
struct drm_device *dev = intel_dp_to_dev(intel_dp);
struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base;
+ struct intel_crtc *crtc =
+ to_intel_crtc(dp_to_dig_port(intel_dp)->base.base.crtc);
u8 sink_irq_vector;
u8 link_status[DP_LINK_STATUS_SIZE];
@@ -4361,7 +4381,7 @@
DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n");
}
- if (!drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) {
+ if (!drm_dp_channel_eq_ok(link_status, crtc->config->lane_count)) {
DRM_DEBUG_KMS("%s: channel EQ not ok, retraining\n",
intel_encoder->base.name);
intel_dp_start_link_train(intel_dp);
diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c
index f4fe118..fdb5e31 100644
--- a/drivers/gpu/drm/i915/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/intel_dp_mst.c
@@ -65,7 +65,7 @@
intel_dp->rate_select = 0;
}
- intel_dp->lane_count = lane_count;
+ pipe_config->lane_count = lane_count;
pipe_config->pipe_bpp = 24;
pipe_config->port_clock = rate;
@@ -276,6 +276,10 @@
break;
}
pipe_config->base.adjusted_mode.flags |= flags;
+
+ pipe_config->lane_count =
+ ((temp & DDI_PORT_WIDTH_MASK) >> DDI_PORT_WIDTH_SHIFT) + 1;
+
intel_dp_get_m_n(crtc, pipe_config);
intel_ddi_clock_get(&intel_dig_port->base, pipe_config);
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index e2456bc..0a11041 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -423,6 +423,8 @@
/* Used by SDVO (and if we ever fix it, HDMI). */
unsigned pixel_multiplier;
+ uint8_t lane_count;
+
/* Panel fitter controls for gen2-gen4 + VLV */
struct {
u32 control;
@@ -712,7 +714,6 @@
bool color_range_auto;
uint8_t link_bw;
uint8_t rate_select;
- uint8_t lane_count;
uint8_t dpcd[DP_RECEIVER_CAP_SIZE];
uint8_t psr_dpcd[EDP_PSR_RECEIVER_CAP_SIZE];
uint8_t downstream_ports[DP_MAX_DOWNSTREAM_PORTS];