uint32_t ch_data = ch_ctl + 4;
int i;
int recv_bytes;
- uint32_t ctl;
uint32_t status;
uint32_t aux_clock_divider;
int try, precharge;
else
precharge = 5;
+ if (I915_READ(ch_ctl) & DP_AUX_CH_CTL_SEND_BUSY) {
+ DRM_ERROR("dp_aux_ch not started status 0x%08x\n",
+ I915_READ(ch_ctl));
+ return -EBUSY;
+ }
+
/* Must try at least 3 times according to DP spec */
for (try = 0; try < 5; try++) {
/* Load the send data into the aux channel data registers */
- for (i = 0; i < send_bytes; i += 4) {
- uint32_t d = pack_aux(send + i, send_bytes - i);
-
- I915_WRITE(ch_data + i, d);
- }
-
- ctl = (DP_AUX_CH_CTL_SEND_BUSY |
- DP_AUX_CH_CTL_TIME_OUT_400us |
- (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) |
- (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) |
- (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT) |
- DP_AUX_CH_CTL_DONE |
- DP_AUX_CH_CTL_TIME_OUT_ERROR |
- DP_AUX_CH_CTL_RECEIVE_ERROR);
+ for (i = 0; i < send_bytes; i += 4)
+ I915_WRITE(ch_data + i,
+ pack_aux(send + i, send_bytes - i));
/* Send the command and wait for it to complete */
- I915_WRITE(ch_ctl, ctl);
- (void) I915_READ(ch_ctl);
+ I915_WRITE(ch_ctl,
+ DP_AUX_CH_CTL_SEND_BUSY |
+ DP_AUX_CH_CTL_TIME_OUT_400us |
+ (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) |
+ (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) |
+ (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT) |
+ DP_AUX_CH_CTL_DONE |
+ DP_AUX_CH_CTL_TIME_OUT_ERROR |
+ DP_AUX_CH_CTL_RECEIVE_ERROR);
for (;;) {
- udelay(100);
status = I915_READ(ch_ctl);
if ((status & DP_AUX_CH_CTL_SEND_BUSY) == 0)
break;
+ udelay(100);
}
/* Clear done status and any errors */
- I915_WRITE(ch_ctl, (status |
- DP_AUX_CH_CTL_DONE |
- DP_AUX_CH_CTL_TIME_OUT_ERROR |
- DP_AUX_CH_CTL_RECEIVE_ERROR));
- (void) I915_READ(ch_ctl);
- if ((status & DP_AUX_CH_CTL_TIME_OUT_ERROR) == 0)
+ I915_WRITE(ch_ctl,
+ status |
+ DP_AUX_CH_CTL_DONE |
+ DP_AUX_CH_CTL_TIME_OUT_ERROR |
+ DP_AUX_CH_CTL_RECEIVE_ERROR);
+ if (status & DP_AUX_CH_CTL_DONE)
break;
}
/* Unload any bytes sent back from the other side */
recv_bytes = ((status & DP_AUX_CH_CTL_MESSAGE_SIZE_MASK) >>
DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT);
-
if (recv_bytes > recv_size)
recv_bytes = recv_size;
- for (i = 0; i < recv_bytes; i += 4) {
- uint32_t d = I915_READ(ch_data + i);
-
- unpack_aux(d, recv + i, recv_bytes - i);
- }
+ for (i = 0; i < recv_bytes; i += 4)
+ unpack_aux(I915_READ(ch_data + i),
+ recv + i, recv_bytes - i);
return recv_bytes;
}
I915_WRITE(PCH_PP_CONTROL, pp);
}
+static void ironlake_edp_pll_on(struct drm_encoder *encoder)
+{
+ struct drm_device *dev = encoder->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 dpa_ctl;
+
+ DRM_DEBUG_KMS("\n");
+ dpa_ctl = I915_READ(DP_A);
+ dpa_ctl &= ~DP_PLL_ENABLE;
+ I915_WRITE(DP_A, dpa_ctl);
+}
+
+static void ironlake_edp_pll_off(struct drm_encoder *encoder)
+{
+ struct drm_device *dev = encoder->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 dpa_ctl;
+
+ dpa_ctl = I915_READ(DP_A);
+ dpa_ctl |= DP_PLL_ENABLE;
+ I915_WRITE(DP_A, dpa_ctl);
+ udelay(200);
+}
+
+static void intel_dp_prepare(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 (IS_eDP(intel_dp)) {
+ ironlake_edp_backlight_off(dev);
+ ironlake_edp_panel_on(dev);
+ ironlake_edp_pll_on(encoder);
+ }
+ if (dp_reg & DP_PORT_EN)
+ 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))
+ ironlake_edp_backlight_on(dev);
+}
+
static void
intel_dp_dpms(struct drm_encoder *encoder, int mode)
{
uint32_t dp_reg = I915_READ(intel_dp->output_reg);
if (mode != DRM_MODE_DPMS_ON) {
- if (dp_reg & DP_PORT_EN) {
- intel_dp_link_down(intel_dp);
- if (IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp)) {
- ironlake_edp_backlight_off(dev);
- ironlake_edp_panel_off(dev);
- }
+ if (IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp)) {
+ ironlake_edp_backlight_off(dev);
+ 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))
+ ironlake_edp_pll_off(encoder);
} else {
if (!(dp_reg & DP_PORT_EN)) {
- intel_dp_link_train(intel_dp);
- if (IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp)) {
+ 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->dpms_mode = mode;
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],
- bool first)
+ uint8_t train_set[4])
{
struct drm_device *dev = intel_dp->base.enc.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
I915_WRITE(intel_dp->output_reg, dp_reg_value);
POSTING_READ(intel_dp->output_reg);
- if (first)
- intel_wait_for_vblank(dev);
intel_dp_aux_native_write_1(intel_dp,
DP_TRAINING_PATTERN_SET,
uint8_t voltage;
bool clock_recovery = false;
bool channel_eq = false;
- bool first = true;
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,
reg = DP | DP_LINK_TRAIN_PAT_1;
if (!intel_dp_set_link_train(intel_dp, reg,
- DP_TRAINING_PATTERN_1, train_set, first))
+ DP_TRAINING_PATTERN_1, train_set))
break;
- first = false;
/* Set training pattern 1 */
udelay(100);
/* channel eq pattern */
if (!intel_dp_set_link_train(intel_dp, reg,
- DP_TRAINING_PATTERN_2, train_set,
- false))
+ DP_TRAINING_PATTERN_2, train_set))
break;
udelay(400);
* \return false if DP port is disconnected.
*/
static enum drm_connector_status
-intel_dp_detect(struct drm_connector *connector)
+intel_dp_detect(struct drm_connector *connector, bool force)
{
struct drm_encoder *encoder = intel_attached_encoder(connector);
struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
static const struct drm_encoder_helper_funcs intel_dp_helper_funcs = {
.dpms = intel_dp_dpms,
.mode_fixup = intel_dp_mode_fixup,
- .prepare = intel_encoder_prepare,
+ .prepare = intel_dp_prepare,
.mode_set = intel_dp_mode_set,
- .commit = intel_encoder_commit,
+ .commit = intel_dp_commit,
};
static const struct drm_connector_funcs intel_dp_connector_funcs = {
git://bbs.cooldavid.org / net-next-2.6.git / blobdiff