#define DP_LINK_CONFIGURATION_SIZE 9
-#define IS_eDP(i) ((i)->base.type == INTEL_OUTPUT_EDP)
-#define IS_PCH_eDP(i) ((i)->is_pch_edp)
-
struct intel_dp {
struct intel_encoder base;
uint32_t output_reg;
uint32_t DP;
uint8_t link_configuration[DP_LINK_CONFIGURATION_SIZE];
bool has_audio;
+ int force_audio;
int dpms_mode;
uint8_t link_bw;
uint8_t lane_count;
struct i2c_adapter adapter;
struct i2c_algo_dp_aux_data algo;
bool is_pch_edp;
+ uint8_t train_set[4];
+ uint8_t link_status[DP_LINK_STATUS_SIZE];
+
+ struct drm_property *force_audio_property;
};
+/**
+ * is_edp - is the given port attached to an eDP panel (either CPU or PCH)
+ * @intel_dp: DP struct
+ *
+ * If a CPU or PCH DP output is attached to an eDP panel, this function
+ * will return true, and false otherwise.
+ */
+static bool is_edp(struct intel_dp *intel_dp)
+{
+ return intel_dp->base.type == INTEL_OUTPUT_EDP;
+}
+
+/**
+ * is_pch_edp - is the port on the PCH and attached to an eDP panel?
+ * @intel_dp: DP struct
+ *
+ * Returns true if the given DP struct corresponds to a PCH DP port attached
+ * to an eDP panel, false otherwise. Helpful for determining whether we
+ * may need FDI resources for a given DP output or not.
+ */
+static bool is_pch_edp(struct intel_dp *intel_dp)
+{
+ return intel_dp->is_pch_edp;
+}
+
static struct intel_dp *enc_to_intel_dp(struct drm_encoder *encoder)
{
- return container_of(enc_to_intel_encoder(encoder), struct intel_dp, base);
+ return container_of(encoder, struct intel_dp, base.base);
+}
+
+static struct intel_dp *intel_attached_dp(struct drm_connector *connector)
+{
+ return container_of(intel_attached_encoder(connector),
+ struct intel_dp, base);
+}
+
+/**
+ * intel_encoder_is_pch_edp - is the given encoder a PCH attached eDP?
+ * @encoder: DRM encoder
+ *
+ * Return true if @encoder corresponds to a PCH attached eDP panel. Needed
+ * by intel_display.c.
+ */
+bool intel_encoder_is_pch_edp(struct drm_encoder *encoder)
+{
+ struct intel_dp *intel_dp;
+
+ if (!encoder)
+ return false;
+
+ intel_dp = enc_to_intel_dp(encoder);
+
+ return is_pch_edp(intel_dp);
}
-static void intel_dp_link_train(struct intel_dp *intel_dp);
+static void intel_dp_start_link_train(struct intel_dp *intel_dp);
+static void intel_dp_complete_link_train(struct intel_dp *intel_dp);
static void intel_dp_link_down(struct intel_dp *intel_dp);
void
{
struct drm_i915_private *dev_priv = dev->dev_private;
- if (IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp))
- return (pixel_clock * dev_priv->edp_bpp) / 8;
+ if (is_edp(intel_dp))
+ return (pixel_clock * dev_priv->edp.bpp + 7) / 8;
else
return pixel_clock * 3;
}
intel_dp_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
- struct drm_encoder *encoder = intel_attached_encoder(connector);
- struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+ struct intel_dp *intel_dp = intel_attached_dp(connector);
struct drm_device *dev = connector->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
int max_link_clock = intel_dp_link_clock(intel_dp_max_link_bw(intel_dp));
int max_lanes = intel_dp_max_lane_count(intel_dp);
- if ((IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp)) &&
- dev_priv->panel_fixed_mode) {
+ if (is_edp(intel_dp) && dev_priv->panel_fixed_mode) {
if (mode->hdisplay > dev_priv->panel_fixed_mode->hdisplay)
return MODE_PANEL;
/* only refuse the mode on non eDP since we have seen some wierd eDP panels
which are outside spec tolerances but somehow work by magic */
- if (!IS_eDP(intel_dp) &&
+ if (!is_edp(intel_dp) &&
(intel_dp_link_required(connector->dev, intel_dp, mode->clock)
> intel_dp_max_data_rate(max_link_clock, max_lanes)))
return MODE_CLOCK_HIGH;
uint8_t *recv, int recv_size)
{
uint32_t output_reg = intel_dp->output_reg;
- struct drm_device *dev = intel_dp->base.enc.dev;
+ struct drm_device *dev = intel_dp->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t ch_ctl = output_reg + 0x10;
uint32_t ch_data = ch_ctl + 4;
/* The clock divider is based off the hrawclk,
* and would like to run at 2MHz. So, take the
* hrawclk value and divide by 2 and use that
+ *
+ * Note that PCH attached eDP panels should use a 125MHz input
+ * clock divider.
*/
- if (IS_eDP(intel_dp)) {
+ if (is_edp(intel_dp) && !is_pch_edp(intel_dp)) {
if (IS_GEN6(dev))
aux_clock_divider = 200; /* SNB eDP input clock at 400Mhz */
else
int max_clock = intel_dp_max_link_bw(intel_dp) == DP_LINK_BW_2_7 ? 1 : 0;
static int bws[2] = { DP_LINK_BW_1_62, DP_LINK_BW_2_7 };
- if ((IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp)) &&
- dev_priv->panel_fixed_mode) {
+ if (is_edp(intel_dp) && dev_priv->panel_fixed_mode) {
intel_fixed_panel_mode(dev_priv->panel_fixed_mode, adjusted_mode);
intel_pch_panel_fitting(dev, DRM_MODE_SCALE_FULLSCREEN,
mode, adjusted_mode);
mode->clock = dev_priv->panel_fixed_mode->clock;
}
+ /* Just use VBT values for eDP */
+ if (is_edp(intel_dp)) {
+ intel_dp->lane_count = dev_priv->edp.lanes;
+ intel_dp->link_bw = dev_priv->edp.rate;
+ adjusted_mode->clock = intel_dp_link_clock(intel_dp->link_bw);
+ DRM_DEBUG_KMS("eDP link bw %02x lane count %d clock %d\n",
+ intel_dp->link_bw, intel_dp->lane_count,
+ adjusted_mode->clock);
+ return true;
+ }
+
for (lane_count = 1; lane_count <= max_lane_count; lane_count <<= 1) {
for (clock = 0; clock <= max_clock; clock++) {
int link_avail = intel_dp_max_data_rate(intel_dp_link_clock(bws[clock]), lane_count);
}
}
- if (IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp)) {
- /* okay we failed just pick the highest */
- intel_dp->lane_count = max_lane_count;
- intel_dp->link_bw = bws[max_clock];
- adjusted_mode->clock = intel_dp_link_clock(intel_dp->link_bw);
- DRM_DEBUG_KMS("Force picking display port link bw %02x lane "
- "count %d clock %d\n",
- intel_dp->link_bw, intel_dp->lane_count,
- adjusted_mode->clock);
-
- return true;
- }
-
return false;
}
intel_reduce_ratio(&m_n->link_m, &m_n->link_n);
}
-bool intel_pch_has_edp(struct drm_crtc *crtc)
-{
- struct drm_device *dev = crtc->dev;
- struct drm_mode_config *mode_config = &dev->mode_config;
- struct drm_encoder *encoder;
-
- list_for_each_entry(encoder, &mode_config->encoder_list, head) {
- struct intel_dp *intel_dp;
-
- if (encoder->crtc != crtc)
- continue;
-
- intel_dp = enc_to_intel_dp(encoder);
- if (intel_dp->base.type == INTEL_OUTPUT_DISPLAYPORT)
- return intel_dp->is_pch_edp;
- }
- return false;
-}
-
void
intel_dp_set_m_n(struct drm_crtc *crtc, struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
intel_dp = enc_to_intel_dp(encoder);
if (intel_dp->base.type == INTEL_OUTPUT_DISPLAYPORT) {
lane_count = intel_dp->lane_count;
- if (IS_PCH_eDP(intel_dp))
- bpp = dev_priv->edp_bpp;
+ break;
+ } else if (is_edp(intel_dp)) {
+ lane_count = dev_priv->edp.lanes;
+ bpp = dev_priv->edp.bpp;
break;
}
}
{
struct drm_device *dev = encoder->dev;
struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
- struct drm_crtc *crtc = intel_dp->base.enc.crtc;
+ struct drm_crtc *crtc = intel_dp->base.base.crtc;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
intel_dp->DP = (DP_VOLTAGE_0_4 |
if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
intel_dp->DP |= DP_SYNC_VS_HIGH;
- if (HAS_PCH_CPT(dev) && !IS_eDP(intel_dp))
+ if (HAS_PCH_CPT(dev) && !is_edp(intel_dp))
intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT;
else
intel_dp->DP |= DP_LINK_TRAIN_OFF;
if (intel_crtc->pipe == 1 && !HAS_PCH_CPT(dev))
intel_dp->DP |= DP_PIPEB_SELECT;
- if (IS_eDP(intel_dp)) {
+ if (is_edp(intel_dp) && !is_pch_edp(intel_dp)) {
/* don't miss out required setting for eDP */
intel_dp->DP |= DP_PLL_ENABLE;
if (adjusted_mode->clock < 200000)
}
}
-static void ironlake_edp_panel_on (struct drm_device *dev)
+/* Returns true if the panel was already on when called */
+static bool ironlake_edp_panel_on (struct intel_dp *intel_dp)
{
+ struct drm_device *dev = intel_dp->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- u32 pp;
+ u32 pp, idle_on_mask = PP_ON | PP_SEQUENCE_STATE_ON_IDLE;
if (I915_READ(PCH_PP_STATUS) & PP_ON)
- return;
+ return true;
pp = I915_READ(PCH_PP_CONTROL);
pp |= PANEL_UNLOCK_REGS | POWER_TARGET_ON;
I915_WRITE(PCH_PP_CONTROL, pp);
+ POSTING_READ(PCH_PP_CONTROL);
- if (wait_for(I915_READ(PCH_PP_STATUS) & PP_ON, 5000, 10))
+ /* Ouch. We need to wait here for some panels, like Dell e6510
+ * https://bugs.freedesktop.org/show_bug.cgi?id=29278i
+ */
+ msleep(300);
+
+ if (wait_for((I915_READ(PCH_PP_STATUS) & idle_on_mask) == idle_on_mask,
+ 5000))
DRM_ERROR("panel on wait timed out: 0x%08x\n",
I915_READ(PCH_PP_STATUS));
- pp &= ~(PANEL_UNLOCK_REGS | EDP_FORCE_VDD);
pp |= PANEL_POWER_RESET; /* restore panel reset bit */
I915_WRITE(PCH_PP_CONTROL, pp);
POSTING_READ(PCH_PP_CONTROL);
+
+ return false;
}
static void ironlake_edp_panel_off (struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
- u32 pp;
+ u32 pp, idle_off_mask = PP_ON | PP_SEQUENCE_MASK |
+ PP_CYCLE_DELAY_ACTIVE | PP_SEQUENCE_STATE_MASK;
pp = I915_READ(PCH_PP_CONTROL);
pp &= ~POWER_TARGET_ON;
I915_WRITE(PCH_PP_CONTROL, pp);
+ POSTING_READ(PCH_PP_CONTROL);
- if (wait_for((I915_READ(PCH_PP_STATUS) & PP_ON) == 0, 5000, 10))
+ if (wait_for((I915_READ(PCH_PP_STATUS) & idle_off_mask) == 0, 5000))
DRM_ERROR("panel off wait timed out: 0x%08x\n",
I915_READ(PCH_PP_STATUS));
- /* Make sure VDD is enabled so DP AUX will work */
- pp |= EDP_FORCE_VDD | PANEL_POWER_RESET; /* restore panel reset bit */
+ pp |= PANEL_POWER_RESET; /* restore panel reset bit */
I915_WRITE(PCH_PP_CONTROL, pp);
POSTING_READ(PCH_PP_CONTROL);
+
+ /* Ouch. We need to wait here for some panels, like Dell e6510
+ * https://bugs.freedesktop.org/show_bug.cgi?id=29278i
+ */
+ msleep(300);
}
static void ironlake_edp_backlight_on (struct drm_device *dev)
u32 pp;
DRM_DEBUG_KMS("\n");
+ /*
+ * If we enable the backlight right away following a panel power
+ * on, we may see slight flicker as the panel syncs with the eDP
+ * link. So delay a bit to make sure the image is solid before
+ * allowing it to appear.
+ */
+ msleep(300);
pp = I915_READ(PCH_PP_CONTROL);
pp |= EDP_BLC_ENABLE;
I915_WRITE(PCH_PP_CONTROL, pp);
DRM_DEBUG_KMS("\n");
dpa_ctl = I915_READ(DP_A);
- dpa_ctl &= ~DP_PLL_ENABLE;
+ dpa_ctl |= DP_PLL_ENABLE;
I915_WRITE(DP_A, dpa_ctl);
+ POSTING_READ(DP_A);
+ udelay(200);
}
static void ironlake_edp_pll_off(struct drm_encoder *encoder)
u32 dpa_ctl;
dpa_ctl = I915_READ(DP_A);
- dpa_ctl |= DP_PLL_ENABLE;
+ dpa_ctl &= ~DP_PLL_ENABLE;
I915_WRITE(DP_A, dpa_ctl);
+ POSTING_READ(DP_A);
udelay(200);
}
{
struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
struct drm_device *dev = encoder->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- uint32_t dp_reg = I915_READ(intel_dp->output_reg);
- if (IS_eDP(intel_dp)) {
+ if (is_edp(intel_dp)) {
ironlake_edp_backlight_off(dev);
- ironlake_edp_panel_on(dev);
- ironlake_edp_pll_on(encoder);
+ ironlake_edp_panel_on(intel_dp);
+ if (!is_pch_edp(intel_dp))
+ ironlake_edp_pll_on(encoder);
+ else
+ ironlake_edp_pll_off(encoder);
}
- if (dp_reg & DP_PORT_EN)
- intel_dp_link_down(intel_dp);
+ intel_dp_link_down(intel_dp);
}
static void intel_dp_commit(struct drm_encoder *encoder)
{
struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
struct drm_device *dev = encoder->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- uint32_t dp_reg = I915_READ(intel_dp->output_reg);
- if (!(dp_reg & DP_PORT_EN)) {
- intel_dp_link_train(intel_dp);
- }
- if (IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp))
+ intel_dp_start_link_train(intel_dp);
+
+ if (is_edp(intel_dp))
+ ironlake_edp_panel_on(intel_dp);
+
+ intel_dp_complete_link_train(intel_dp);
+
+ if (is_edp(intel_dp))
ironlake_edp_backlight_on(dev);
}
uint32_t dp_reg = I915_READ(intel_dp->output_reg);
if (mode != DRM_MODE_DPMS_ON) {
- if (IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp)) {
+ if (is_edp(intel_dp))
ironlake_edp_backlight_off(dev);
+ intel_dp_link_down(intel_dp);
+ if (is_edp(intel_dp))
ironlake_edp_panel_off(dev);
- }
- if (dp_reg & DP_PORT_EN)
- intel_dp_link_down(intel_dp);
- if (IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp))
+ if (is_edp(intel_dp) && !is_pch_edp(intel_dp))
ironlake_edp_pll_off(encoder);
} else {
+ if (is_edp(intel_dp))
+ ironlake_edp_panel_on(intel_dp);
if (!(dp_reg & DP_PORT_EN)) {
- if (IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp))
- ironlake_edp_panel_on(dev);
- intel_dp_link_train(intel_dp);
- if (IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp))
- ironlake_edp_backlight_on(dev);
+ intel_dp_start_link_train(intel_dp);
+ intel_dp_complete_link_train(intel_dp);
}
+ if (is_edp(intel_dp))
+ ironlake_edp_backlight_on(dev);
}
intel_dp->dpms_mode = mode;
}
* link status information
*/
static bool
-intel_dp_get_link_status(struct intel_dp *intel_dp,
- uint8_t link_status[DP_LINK_STATUS_SIZE])
+intel_dp_get_link_status(struct intel_dp *intel_dp)
{
int ret;
ret = intel_dp_aux_native_read(intel_dp,
DP_LANE0_1_STATUS,
- link_status, DP_LINK_STATUS_SIZE);
+ intel_dp->link_status, DP_LINK_STATUS_SIZE);
if (ret != DP_LINK_STATUS_SIZE)
return false;
return true;
}
static void
-intel_get_adjust_train(struct intel_dp *intel_dp,
- uint8_t link_status[DP_LINK_STATUS_SIZE],
- int lane_count,
- uint8_t train_set[4])
+intel_get_adjust_train(struct intel_dp *intel_dp)
{
uint8_t v = 0;
uint8_t p = 0;
int lane;
- for (lane = 0; lane < lane_count; lane++) {
- uint8_t this_v = intel_get_adjust_request_voltage(link_status, lane);
- uint8_t this_p = intel_get_adjust_request_pre_emphasis(link_status, lane);
+ for (lane = 0; lane < intel_dp->lane_count; lane++) {
+ uint8_t this_v = intel_get_adjust_request_voltage(intel_dp->link_status, lane);
+ uint8_t this_p = intel_get_adjust_request_pre_emphasis(intel_dp->link_status, lane);
if (this_v > v)
v = this_v;
p = intel_dp_pre_emphasis_max(v) | DP_TRAIN_MAX_PRE_EMPHASIS_REACHED;
for (lane = 0; lane < 4; lane++)
- train_set[lane] = v | p;
+ intel_dp->train_set[lane] = v | p;
}
static uint32_t
-intel_dp_signal_levels(uint8_t train_set, int lane_count)
+intel_dp_signal_levels(struct intel_dp *intel_dp)
{
- uint32_t signal_levels = 0;
+ struct drm_device *dev = intel_dp->base.base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ uint32_t signal_levels = 0;
+ u8 train_set = intel_dp->train_set[0];
+ u32 vswing = train_set & DP_TRAIN_VOLTAGE_SWING_MASK;
+ u32 preemphasis = train_set & DP_TRAIN_PRE_EMPHASIS_MASK;
+
+ if (is_edp(intel_dp)) {
+ vswing = dev_priv->edp.vswing;
+ preemphasis = dev_priv->edp.preemphasis;
+ }
- switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) {
+ switch (vswing) {
case DP_TRAIN_VOLTAGE_SWING_400:
default:
signal_levels |= DP_VOLTAGE_0_4;
signal_levels |= DP_VOLTAGE_1_2;
break;
}
- switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) {
+ switch (preemphasis) {
case DP_TRAIN_PRE_EMPHASIS_0:
default:
signal_levels |= DP_PRE_EMPHASIS_0;
DP_LANE_CHANNEL_EQ_DONE|\
DP_LANE_SYMBOL_LOCKED)
static bool
-intel_channel_eq_ok(uint8_t link_status[DP_LINK_STATUS_SIZE], int lane_count)
+intel_channel_eq_ok(struct intel_dp *intel_dp)
{
uint8_t lane_align;
uint8_t lane_status;
int lane;
- lane_align = intel_dp_link_status(link_status,
+ lane_align = intel_dp_link_status(intel_dp->link_status,
DP_LANE_ALIGN_STATUS_UPDATED);
if ((lane_align & DP_INTERLANE_ALIGN_DONE) == 0)
return false;
- for (lane = 0; lane < lane_count; lane++) {
- lane_status = intel_get_lane_status(link_status, lane);
+ for (lane = 0; lane < intel_dp->lane_count; lane++) {
+ lane_status = intel_get_lane_status(intel_dp->link_status, lane);
if ((lane_status & CHANNEL_EQ_BITS) != CHANNEL_EQ_BITS)
return false;
}
return true;
}
+static bool
+intel_dp_aux_handshake_required(struct intel_dp *intel_dp)
+{
+ struct drm_device *dev = intel_dp->base.base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ if (is_edp(intel_dp) && dev_priv->no_aux_handshake)
+ return false;
+
+ return true;
+}
+
static bool
intel_dp_set_link_train(struct intel_dp *intel_dp,
uint32_t dp_reg_value,
- uint8_t dp_train_pat,
- uint8_t train_set[4])
+ uint8_t dp_train_pat)
{
- struct drm_device *dev = intel_dp->base.enc.dev;
+ struct drm_device *dev = intel_dp->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
int ret;
I915_WRITE(intel_dp->output_reg, dp_reg_value);
POSTING_READ(intel_dp->output_reg);
+ if (!intel_dp_aux_handshake_required(intel_dp))
+ return true;
+
intel_dp_aux_native_write_1(intel_dp,
DP_TRAINING_PATTERN_SET,
dp_train_pat);
ret = intel_dp_aux_native_write(intel_dp,
- DP_TRAINING_LANE0_SET, train_set, 4);
+ DP_TRAINING_LANE0_SET,
+ intel_dp->train_set, 4);
if (ret != 4)
return false;
return true;
}
+/* Enable corresponding port and start training pattern 1 */
static void
-intel_dp_link_train(struct intel_dp *intel_dp)
+intel_dp_start_link_train(struct intel_dp *intel_dp)
{
- struct drm_device *dev = intel_dp->base.enc.dev;
+ struct drm_device *dev = intel_dp->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- uint8_t train_set[4];
- uint8_t link_status[DP_LINK_STATUS_SIZE];
+ struct intel_crtc *intel_crtc = to_intel_crtc(intel_dp->base.base.crtc);
int i;
uint8_t voltage;
bool clock_recovery = false;
- bool channel_eq = false;
int tries;
u32 reg;
uint32_t DP = intel_dp->DP;
- struct intel_crtc *intel_crtc = to_intel_crtc(intel_dp->base.enc.crtc);
/* Enable output, wait for it to become active */
I915_WRITE(intel_dp->output_reg, intel_dp->DP);
POSTING_READ(intel_dp->output_reg);
intel_wait_for_vblank(dev, intel_crtc->pipe);
- /* Write the link configuration data */
- intel_dp_aux_native_write(intel_dp, DP_LINK_BW_SET,
- intel_dp->link_configuration,
- DP_LINK_CONFIGURATION_SIZE);
+ if (intel_dp_aux_handshake_required(intel_dp))
+ /* Write the link configuration data */
+ intel_dp_aux_native_write(intel_dp, DP_LINK_BW_SET,
+ intel_dp->link_configuration,
+ DP_LINK_CONFIGURATION_SIZE);
DP |= DP_PORT_EN;
- if (HAS_PCH_CPT(dev) && !IS_eDP(intel_dp))
+ if (HAS_PCH_CPT(dev) && !is_edp(intel_dp))
DP &= ~DP_LINK_TRAIN_MASK_CPT;
else
DP &= ~DP_LINK_TRAIN_MASK;
- memset(train_set, 0, 4);
+ memset(intel_dp->train_set, 0, 4);
voltage = 0xff;
tries = 0;
clock_recovery = false;
for (;;) {
- /* Use train_set[0] to set the voltage and pre emphasis values */
+ /* Use intel_dp->train_set[0] to set the voltage and pre emphasis values */
uint32_t signal_levels;
- if (IS_GEN6(dev) && IS_eDP(intel_dp)) {
- signal_levels = intel_gen6_edp_signal_levels(train_set[0]);
+ if (IS_GEN6(dev) && is_edp(intel_dp)) {
+ signal_levels = intel_gen6_edp_signal_levels(intel_dp->train_set[0]);
DP = (DP & ~EDP_LINK_TRAIN_VOL_EMP_MASK_SNB) | signal_levels;
} else {
- signal_levels = intel_dp_signal_levels(train_set[0], intel_dp->lane_count);
+ signal_levels = intel_dp_signal_levels(intel_dp);
DP = (DP & ~(DP_VOLTAGE_MASK|DP_PRE_EMPHASIS_MASK)) | signal_levels;
}
- if (HAS_PCH_CPT(dev) && !IS_eDP(intel_dp))
+ if (HAS_PCH_CPT(dev) && !is_edp(intel_dp))
reg = DP | DP_LINK_TRAIN_PAT_1_CPT;
else
reg = DP | DP_LINK_TRAIN_PAT_1;
if (!intel_dp_set_link_train(intel_dp, reg,
- DP_TRAINING_PATTERN_1, train_set))
+ DP_TRAINING_PATTERN_1))
break;
/* Set training pattern 1 */
- udelay(100);
- if (!intel_dp_get_link_status(intel_dp, link_status))
+ udelay(500);
+ if (intel_dp_aux_handshake_required(intel_dp)) {
break;
+ } else {
+ if (!intel_dp_get_link_status(intel_dp))
+ break;
- if (intel_clock_recovery_ok(link_status, intel_dp->lane_count)) {
- clock_recovery = true;
- break;
- }
-
- /* Check to see if we've tried the max voltage */
- for (i = 0; i < intel_dp->lane_count; i++)
- if ((train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0)
+ if (intel_clock_recovery_ok(intel_dp->link_status, intel_dp->lane_count)) {
+ clock_recovery = true;
break;
- if (i == intel_dp->lane_count)
- break;
+ }
- /* Check to see if we've tried the same voltage 5 times */
- if ((train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK) == voltage) {
- ++tries;
- if (tries == 5)
+ /* Check to see if we've tried the max voltage */
+ for (i = 0; i < intel_dp->lane_count; i++)
+ if ((intel_dp->train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0)
+ break;
+ if (i == intel_dp->lane_count)
break;
- } else
- tries = 0;
- voltage = train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK;
- /* Compute new train_set as requested by target */
- intel_get_adjust_train(intel_dp, link_status, intel_dp->lane_count, train_set);
+ /* Check to see if we've tried the same voltage 5 times */
+ if ((intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK) == voltage) {
+ ++tries;
+ if (tries == 5)
+ break;
+ } else
+ tries = 0;
+ voltage = intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK;
+
+ /* Compute new intel_dp->train_set as requested by target */
+ intel_get_adjust_train(intel_dp);
+ }
}
+ intel_dp->DP = DP;
+}
+
+static void
+intel_dp_complete_link_train(struct intel_dp *intel_dp)
+{
+ struct drm_device *dev = intel_dp->base.base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ bool channel_eq = false;
+ int tries;
+ u32 reg;
+ uint32_t DP = intel_dp->DP;
+
/* channel equalization */
tries = 0;
channel_eq = false;
for (;;) {
- /* Use train_set[0] to set the voltage and pre emphasis values */
+ /* Use intel_dp->train_set[0] to set the voltage and pre emphasis values */
uint32_t signal_levels;
- if (IS_GEN6(dev) && IS_eDP(intel_dp)) {
- signal_levels = intel_gen6_edp_signal_levels(train_set[0]);
+ if (IS_GEN6(dev) && is_edp(intel_dp)) {
+ signal_levels = intel_gen6_edp_signal_levels(intel_dp->train_set[0]);
DP = (DP & ~EDP_LINK_TRAIN_VOL_EMP_MASK_SNB) | signal_levels;
} else {
- signal_levels = intel_dp_signal_levels(train_set[0], intel_dp->lane_count);
+ signal_levels = intel_dp_signal_levels(intel_dp);
DP = (DP & ~(DP_VOLTAGE_MASK|DP_PRE_EMPHASIS_MASK)) | signal_levels;
}
- if (HAS_PCH_CPT(dev) && !IS_eDP(intel_dp))
+ if (HAS_PCH_CPT(dev) && !is_edp(intel_dp))
reg = DP | DP_LINK_TRAIN_PAT_2_CPT;
else
reg = DP | DP_LINK_TRAIN_PAT_2;
/* channel eq pattern */
if (!intel_dp_set_link_train(intel_dp, reg,
- DP_TRAINING_PATTERN_2, train_set))
+ DP_TRAINING_PATTERN_2))
break;
- udelay(400);
- if (!intel_dp_get_link_status(intel_dp, link_status))
- break;
+ udelay(500);
- if (intel_channel_eq_ok(link_status, intel_dp->lane_count)) {
- channel_eq = true;
+ if (!intel_dp_aux_handshake_required(intel_dp)) {
break;
- }
+ } else {
+ if (!intel_dp_get_link_status(intel_dp))
+ break;
- /* Try 5 times */
- if (tries > 5)
- break;
+ if (intel_channel_eq_ok(intel_dp)) {
+ channel_eq = true;
+ break;
+ }
- /* Compute new train_set as requested by target */
- intel_get_adjust_train(intel_dp, link_status, intel_dp->lane_count, train_set);
- ++tries;
- }
+ /* Try 5 times */
+ if (tries > 5)
+ break;
- if (HAS_PCH_CPT(dev) && !IS_eDP(intel_dp))
+ /* Compute new intel_dp->train_set as requested by target */
+ intel_get_adjust_train(intel_dp);
+ ++tries;
+ }
+ }
+ if (HAS_PCH_CPT(dev) && !is_edp(intel_dp))
reg = DP | DP_LINK_TRAIN_OFF_CPT;
else
reg = DP | DP_LINK_TRAIN_OFF;
static void
intel_dp_link_down(struct intel_dp *intel_dp)
{
- struct drm_device *dev = intel_dp->base.enc.dev;
+ struct drm_device *dev = intel_dp->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t DP = intel_dp->DP;
DRM_DEBUG_KMS("\n");
- if (IS_eDP(intel_dp)) {
+ if (is_edp(intel_dp)) {
DP &= ~DP_PLL_ENABLE;
I915_WRITE(intel_dp->output_reg, DP);
POSTING_READ(intel_dp->output_reg);
udelay(100);
}
- if (HAS_PCH_CPT(dev) && !IS_eDP(intel_dp)) {
+ if (HAS_PCH_CPT(dev) && !is_edp(intel_dp)) {
DP &= ~DP_LINK_TRAIN_MASK_CPT;
I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE_CPT);
- POSTING_READ(intel_dp->output_reg);
} else {
DP &= ~DP_LINK_TRAIN_MASK;
I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE);
- POSTING_READ(intel_dp->output_reg);
}
+ POSTING_READ(intel_dp->output_reg);
- udelay(17000);
+ msleep(17);
- if (IS_eDP(intel_dp))
+ if (is_edp(intel_dp))
DP |= DP_LINK_TRAIN_OFF;
I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN);
POSTING_READ(intel_dp->output_reg);
static void
intel_dp_check_link_status(struct intel_dp *intel_dp)
{
- uint8_t link_status[DP_LINK_STATUS_SIZE];
-
- if (!intel_dp->base.enc.crtc)
+ if (!intel_dp->base.base.crtc)
return;
- if (!intel_dp_get_link_status(intel_dp, link_status)) {
+ if (!intel_dp_get_link_status(intel_dp)) {
intel_dp_link_down(intel_dp);
return;
}
- if (!intel_channel_eq_ok(link_status, intel_dp->lane_count))
- intel_dp_link_train(intel_dp);
+ if (!intel_channel_eq_ok(intel_dp)) {
+ intel_dp_start_link_train(intel_dp);
+ intel_dp_complete_link_train(intel_dp);
+ }
}
static enum drm_connector_status
-ironlake_dp_detect(struct drm_connector *connector)
+ironlake_dp_detect(struct intel_dp *intel_dp)
{
- struct drm_encoder *encoder = intel_attached_encoder(connector);
- struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
enum drm_connector_status status;
+ /* Can't disconnect eDP */
+ if (is_edp(intel_dp))
+ return connector_status_connected;
+
status = connector_status_disconnected;
if (intel_dp_aux_native_read(intel_dp,
0x000, intel_dp->dpcd,
- sizeof (intel_dp->dpcd)) == sizeof (intel_dp->dpcd))
- {
+ sizeof (intel_dp->dpcd))
+ == sizeof(intel_dp->dpcd)) {
if (intel_dp->dpcd[0] != 0)
status = connector_status_connected;
}
return status;
}
-/**
- * Uses CRT_HOTPLUG_EN and CRT_HOTPLUG_STAT to detect DP connection.
- *
- * \return true if DP port is connected.
- * \return false if DP port is disconnected.
- */
static enum drm_connector_status
-intel_dp_detect(struct drm_connector *connector, bool force)
+g4x_dp_detect(struct intel_dp *intel_dp)
{
- struct drm_encoder *encoder = intel_attached_encoder(connector);
- struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
- struct drm_device *dev = intel_dp->base.enc.dev;
+ struct drm_device *dev = intel_dp->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- uint32_t temp, bit;
enum drm_connector_status status;
-
- intel_dp->has_audio = false;
-
- if (HAS_PCH_SPLIT(dev))
- return ironlake_dp_detect(connector);
+ uint32_t temp, bit;
switch (intel_dp->output_reg) {
case DP_B:
return connector_status_disconnected;
status = connector_status_disconnected;
- if (intel_dp_aux_native_read(intel_dp,
- 0x000, intel_dp->dpcd,
+ if (intel_dp_aux_native_read(intel_dp, 0x000, intel_dp->dpcd,
sizeof (intel_dp->dpcd)) == sizeof (intel_dp->dpcd))
{
if (intel_dp->dpcd[0] != 0)
status = connector_status_connected;
}
+
return status;
}
+/**
+ * Uses CRT_HOTPLUG_EN and CRT_HOTPLUG_STAT to detect DP connection.
+ *
+ * \return true if DP port is connected.
+ * \return false if DP port is disconnected.
+ */
+static enum drm_connector_status
+intel_dp_detect(struct drm_connector *connector, bool force)
+{
+ struct intel_dp *intel_dp = intel_attached_dp(connector);
+ struct drm_device *dev = intel_dp->base.base.dev;
+ enum drm_connector_status status;
+ struct edid *edid = NULL;
+
+ intel_dp->has_audio = false;
+
+ if (HAS_PCH_SPLIT(dev))
+ status = ironlake_dp_detect(intel_dp);
+ else
+ status = g4x_dp_detect(intel_dp);
+ if (status != connector_status_connected)
+ return status;
+
+ if (intel_dp->force_audio) {
+ intel_dp->has_audio = intel_dp->force_audio > 0;
+ } else {
+ edid = drm_get_edid(connector, &intel_dp->adapter);
+ if (edid) {
+ intel_dp->has_audio = drm_detect_monitor_audio(edid);
+ connector->display_info.raw_edid = NULL;
+ kfree(edid);
+ }
+ }
+
+ return connector_status_connected;
+}
+
static int intel_dp_get_modes(struct drm_connector *connector)
{
- struct drm_encoder *encoder = intel_attached_encoder(connector);
- struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
- struct drm_device *dev = intel_dp->base.enc.dev;
+ struct intel_dp *intel_dp = intel_attached_dp(connector);
+ struct drm_device *dev = intel_dp->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
int ret;
/* We should parse the EDID data and find out if it has an audio sink
*/
- ret = intel_ddc_get_modes(connector, intel_dp->base.ddc_bus);
+ ret = intel_ddc_get_modes(connector, &intel_dp->adapter);
if (ret) {
- if ((IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp)) &&
- !dev_priv->panel_fixed_mode) {
+ if (is_edp(intel_dp) && !dev_priv->panel_fixed_mode) {
struct drm_display_mode *newmode;
list_for_each_entry(newmode, &connector->probed_modes,
head) {
}
/* if eDP has no EDID, try to use fixed panel mode from VBT */
- if (IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp)) {
+ if (is_edp(intel_dp)) {
if (dev_priv->panel_fixed_mode != NULL) {
struct drm_display_mode *mode;
mode = drm_mode_duplicate(dev, dev_priv->panel_fixed_mode);
return 0;
}
+static int
+intel_dp_set_property(struct drm_connector *connector,
+ struct drm_property *property,
+ uint64_t val)
+{
+ struct intel_dp *intel_dp = intel_attached_dp(connector);
+ int ret;
+
+ ret = drm_connector_property_set_value(connector, property, val);
+ if (ret)
+ return ret;
+
+ if (property == intel_dp->force_audio_property) {
+ if (val == intel_dp->force_audio)
+ return 0;
+
+ intel_dp->force_audio = val;
+
+ if (val > 0 && intel_dp->has_audio)
+ return 0;
+ if (val < 0 && !intel_dp->has_audio)
+ return 0;
+
+ intel_dp->has_audio = val > 0;
+ goto done;
+ }
+
+ return -EINVAL;
+
+done:
+ if (intel_dp->base.base.crtc) {
+ struct drm_crtc *crtc = intel_dp->base.base.crtc;
+ drm_crtc_helper_set_mode(crtc, &crtc->mode,
+ crtc->x, crtc->y,
+ crtc->fb);
+ }
+
+ return 0;
+}
+
static void
intel_dp_destroy (struct drm_connector *connector)
{
kfree(connector);
}
+static void intel_dp_encoder_destroy(struct drm_encoder *encoder)
+{
+ struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+
+ i2c_del_adapter(&intel_dp->adapter);
+ drm_encoder_cleanup(encoder);
+ kfree(intel_dp);
+}
+
static const struct drm_encoder_helper_funcs intel_dp_helper_funcs = {
.dpms = intel_dp_dpms,
.mode_fixup = intel_dp_mode_fixup,
.dpms = drm_helper_connector_dpms,
.detect = intel_dp_detect,
.fill_modes = drm_helper_probe_single_connector_modes,
+ .set_property = intel_dp_set_property,
.destroy = intel_dp_destroy,
};
static const struct drm_connector_helper_funcs intel_dp_connector_helper_funcs = {
.get_modes = intel_dp_get_modes,
.mode_valid = intel_dp_mode_valid,
- .best_encoder = intel_attached_encoder,
+ .best_encoder = intel_best_encoder,
};
static const struct drm_encoder_funcs intel_dp_enc_funcs = {
- .destroy = intel_encoder_destroy,
+ .destroy = intel_dp_encoder_destroy,
};
-void
+static void
intel_dp_hot_plug(struct intel_encoder *intel_encoder)
{
struct intel_dp *intel_dp = container_of(intel_encoder, struct intel_dp, base);
return false;
}
+static void
+intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connector)
+{
+ struct drm_device *dev = connector->dev;
+
+ intel_dp->force_audio_property =
+ drm_property_create(dev, DRM_MODE_PROP_RANGE, "force_audio", 2);
+ if (intel_dp->force_audio_property) {
+ intel_dp->force_audio_property->values[0] = -1;
+ intel_dp->force_audio_property->values[1] = 1;
+ drm_connector_attach_property(connector, intel_dp->force_audio_property, 0);
+ }
+}
+
void
intel_dp_init(struct drm_device *dev, int output_reg)
{
if (intel_dpd_is_edp(dev))
intel_dp->is_pch_edp = true;
- if (output_reg == DP_A || IS_PCH_eDP(intel_dp)) {
+ if (output_reg == DP_A || is_pch_edp(intel_dp)) {
type = DRM_MODE_CONNECTOR_eDP;
intel_encoder->type = INTEL_OUTPUT_EDP;
} else {
else if (output_reg == DP_D || output_reg == PCH_DP_D)
intel_encoder->clone_mask = (1 << INTEL_DP_D_CLONE_BIT);
- if (IS_eDP(intel_dp))
+ if (is_edp(intel_dp))
intel_encoder->clone_mask = (1 << INTEL_EDP_CLONE_BIT);
intel_encoder->crtc_mask = (1 << 0) | (1 << 1);
intel_dp->has_audio = false;
intel_dp->dpms_mode = DRM_MODE_DPMS_ON;
- drm_encoder_init(dev, &intel_encoder->enc, &intel_dp_enc_funcs,
+ drm_encoder_init(dev, &intel_encoder->base, &intel_dp_enc_funcs,
DRM_MODE_ENCODER_TMDS);
- drm_encoder_helper_add(&intel_encoder->enc, &intel_dp_helper_funcs);
+ drm_encoder_helper_add(&intel_encoder->base, &intel_dp_helper_funcs);
- drm_mode_connector_attach_encoder(&intel_connector->base,
- &intel_encoder->enc);
+ intel_connector_attach_encoder(intel_connector, intel_encoder);
drm_sysfs_connector_add(connector);
/* Set up the DDC bus. */
intel_dp_i2c_init(intel_dp, intel_connector, name);
- intel_encoder->ddc_bus = &intel_dp->adapter;
+ /* Cache some DPCD data in the eDP case */
+ if (is_edp(intel_dp)) {
+ int ret;
+ bool was_on;
+
+ was_on = ironlake_edp_panel_on(intel_dp);
+ ret = intel_dp_aux_native_read(intel_dp, DP_DPCD_REV,
+ intel_dp->dpcd,
+ sizeof(intel_dp->dpcd));
+ if (ret == sizeof(intel_dp->dpcd)) {
+ if (intel_dp->dpcd[0] >= 0x11)
+ dev_priv->no_aux_handshake = intel_dp->dpcd[3] &
+ DP_NO_AUX_HANDSHAKE_LINK_TRAINING;
+ } else {
+ DRM_ERROR("failed to retrieve link info\n");
+ }
+ if (!was_on)
+ ironlake_edp_panel_off(dev);
+ }
+
intel_encoder->hot_plug = intel_dp_hot_plug;
- if (output_reg == DP_A || IS_PCH_eDP(intel_dp)) {
+ if (is_edp(intel_dp)) {
/* initialize panel mode from VBT if available for eDP */
if (dev_priv->lfp_lvds_vbt_mode) {
dev_priv->panel_fixed_mode =
}
}
+ intel_dp_add_properties(intel_dp, connector);
+
/* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written
* 0xd. Failure to do so will result in spurious interrupts being
* generated on the port when a cable is not attached.
git.openpandora.org / pandora-kernel.git / blobdiff