From: Ville Syrjälä <ville.syrj...@linux.intel.com>
Clean up the DP pipe select bits. To make the whole situation a bit
less ugly we'll start to share the same code between .get_hw_state(),
the port state asserts, and the VLV power sequencer code.
v2: Return PIPE_A for cpt/ppt when the port isn't selected by
any transcoder. Returning INVALID_PIPE explodes *somewhere*
on some machines (can't immediately see where though). This
now matches the old behaviour.
Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
---
drivers/gpu/drm/i915/i915_reg.h | 24 +++-----
drivers/gpu/drm/i915/intel_display.c | 46 +++++----------
drivers/gpu/drm/i915/intel_dp.c | 110 ++++++++++++++++++++---------------
drivers/gpu/drm/i915/intel_drv.h | 3 +
4 files changed, 90 insertions(+), 93 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index dc9fc6220509..9548e0bee7db 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -5248,10 +5248,15 @@ enum {
#define CHV_DP_D _MMIO(VLV_DISPLAY_BASE + 0x64300)
#define DP_PORT_EN (1 << 31)
-#define DP_PIPEB_SELECT (1 << 30)
-#define DP_PIPE_MASK (1 << 30)
-#define DP_PIPE_SELECT_CHV(pipe) ((pipe) << 16)
-#define DP_PIPE_MASK_CHV (3 << 16)
+#define DP_PIPE_SEL(pipe) ((pipe) << 30)
+#define DP_PIPE_SEL_MASK (1 << 30)
+#define DP_PIPE_SEL_SHIFT 30
+#define DP_PIPE_SEL_IVB(pipe) ((pipe) << 29)
+#define DP_PIPE_SEL_MASK_IVB (3 << 29)
+#define DP_PIPE_SEL_SHIFT_IVB 29
+#define DP_PIPE_SEL_CHV(pipe) ((pipe) << 16)
+#define DP_PIPE_SEL_MASK_CHV (3 << 16)
+#define DP_PIPE_SEL_SHIFT_CHV 16
/* Link training mode - select a suitable mode for each stage */
#define DP_LINK_TRAIN_PAT_1 (0 << 28)
@@ -7921,16 +7926,6 @@ enum {
#define PCH_DP_AUX_CH_DATA(aux_ch, i) _MMIO(_PORT((aux_ch) - AUX_CH_B,
_PCH_DPB_AUX_CH_DATA1, _PCH_DPC_AUX_CH_DATA1) + (i) * 4) /* 5 registers */
/* CPT */
-#define PORT_TRANS_A_SEL_CPT 0
-#define PORT_TRANS_B_SEL_CPT (1<<29)
-#define PORT_TRANS_C_SEL_CPT (2<<29)
-#define PORT_TRANS_SEL_MASK (3<<29)
-#define PORT_TRANS_SEL_CPT(pipe) ((pipe) << 29)
-#define PORT_TO_PIPE(val) (((val) & (1<<30)) >> 30)
-#define PORT_TO_PIPE_CPT(val) (((val) & PORT_TRANS_SEL_MASK) >> 29)
-#define SDVO_PORT_TO_PIPE_CHV(val) (((val) & (3<<24)) >> 24)
-#define DP_PORT_TO_PIPE_CHV(val) (((val) & (3<<16)) >> 16)
-
#define _TRANS_DP_CTL_A 0xe0300
#define _TRANS_DP_CTL_B 0xe1300
#define _TRANS_DP_CTL_C 0xe2300
@@ -7939,7 +7934,6 @@ enum {
#define TRANS_DP_PORT_SEL(port) (((port) - PORT_B) << 29)
#define TRANS_DP_PORT_SEL_NONE (3 << 29)
#define TRANS_DP_PORT_SEL_MASK (3 << 29)
-#define TRANS_DP_PIPE_TO_PORT(val) ((((val) & TRANS_DP_PORT_SEL_MASK) >>
29) + PORT_B)
#define TRANS_DP_AUDIO_ONLY (1<<26)
#define TRANS_DP_ENH_FRAMING (1<<18)
#define TRANS_DP_8BPC (0<<9)
diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index 43b589dfe71f..dfe3a17b86d1 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -1261,38 +1261,22 @@ void assert_pch_transcoder_disabled(struct
drm_i915_private *dev_priv,
pipe_name(pipe));
}
-static bool dp_pipe_enabled(struct drm_i915_private *dev_priv,
- enum pipe pipe, u32 port_sel, u32 val)
+static void assert_pch_dp_disabled(struct drm_i915_private *dev_priv,
+ enum pipe pipe, enum port port,
+ i915_reg_t dp_reg)
{
- if ((val & DP_PORT_EN) == 0)
- return false;
+ enum pipe port_pipe;
+ bool state;
- if (HAS_PCH_CPT(dev_priv)) {
- u32 trans_dp_ctl = I915_READ(TRANS_DP_CTL(pipe));
- if ((trans_dp_ctl & TRANS_DP_PORT_SEL_MASK) != port_sel)
- return false;
- } else if (IS_CHERRYVIEW(dev_priv)) {
- if ((val & DP_PIPE_MASK_CHV) != DP_PIPE_SELECT_CHV(pipe))
- return false;
- } else {
- if ((val & DP_PIPE_MASK) != (pipe << 30))
- return false;
- }
- return true;
-}
+ state = intel_dp_port_enabled(dev_priv, dp_reg, port, &port_pipe);
-static void assert_pch_dp_disabled(struct drm_i915_private *dev_priv,
- enum pipe pipe, i915_reg_t reg,
- u32 port_sel)
-{
- u32 val = I915_READ(reg);
- I915_STATE_WARN(dp_pipe_enabled(dev_priv, pipe, port_sel, val),
- "PCH DP (0x%08x) enabled on transcoder %c, should be disabled\n",
- i915_mmio_reg_offset(reg), pipe_name(pipe));
+ I915_STATE_WARN(state && port_pipe == pipe,
+ "PCH DP %c enabled on transcoder %c, should be
disabled\n",
+ port_name(port), pipe_name(pipe));
- I915_STATE_WARN(HAS_PCH_IBX(dev_priv) && (val & DP_PORT_EN) == 0
- && (val & DP_PIPEB_SELECT),
- "IBX PCH dp port still using transcoder B\n");
+ I915_STATE_WARN(HAS_PCH_IBX(dev_priv) && !state && port_pipe == PIPE_B,
+ "IBX PCH DP %c still using transcoder B\n",
+ port_name(port));
}
static void assert_pch_hdmi_disabled(struct drm_i915_private *dev_priv,
@@ -1318,9 +1302,9 @@ static void assert_pch_ports_disabled(struct
drm_i915_private *dev_priv,
{
enum pipe port_pipe;
- assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_B,
TRANS_DP_PORT_SEL(PORT_B));
- assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_C,
TRANS_DP_PORT_SEL(PORT_C));
- assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_D,
TRANS_DP_PORT_SEL(PORT_D));
+ assert_pch_dp_disabled(dev_priv, pipe, PORT_B, PCH_DP_B);
+ assert_pch_dp_disabled(dev_priv, pipe, PORT_C, PCH_DP_C);
+ assert_pch_dp_disabled(dev_priv, pipe, PORT_D, PCH_DP_D);
I915_STATE_WARN(intel_crt_port_enabled(dev_priv, PCH_ADPA, &port_pipe)
&&
port_pipe == pipe,
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 2a82eccffe54..638a9dd05592 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -532,9 +532,9 @@ vlv_power_sequencer_kick(struct intel_dp *intel_dp)
DP |= DP_LINK_TRAIN_PAT_1;
if (IS_CHERRYVIEW(dev_priv))
- DP |= DP_PIPE_SELECT_CHV(pipe);
- else if (pipe == PIPE_B)
- DP |= DP_PIPEB_SELECT;
+ DP |= DP_PIPE_SEL_CHV(pipe);
+ else
+ DP |= DP_PIPE_SEL(pipe);
pll_enabled = I915_READ(DPLL(pipe)) & DPLL_VCO_ENABLE;
@@ -1980,7 +1980,7 @@ static void intel_dp_prepare(struct intel_encoder
*encoder,
if (drm_dp_enhanced_frame_cap(intel_dp->dpcd))
intel_dp->DP |= DP_ENHANCED_FRAMING;
- intel_dp->DP |= crtc->pipe << 29;
+ intel_dp->DP |= DP_PIPE_SEL_IVB(crtc->pipe);
} else if (HAS_PCH_CPT(dev_priv) && port != PORT_A) {
u32 trans_dp;
@@ -2006,9 +2006,9 @@ static void intel_dp_prepare(struct intel_encoder
*encoder,
intel_dp->DP |= DP_ENHANCED_FRAMING;
if (IS_CHERRYVIEW(dev_priv))
- intel_dp->DP |= DP_PIPE_SELECT_CHV(crtc->pipe);
- else if (crtc->pipe == PIPE_B)
- intel_dp->DP |= DP_PIPEB_SELECT;
+ intel_dp->DP |= DP_PIPE_SEL_CHV(crtc->pipe);
+ else
+ intel_dp->DP |= DP_PIPE_SEL(crtc->pipe);
}
}
@@ -2630,52 +2630,67 @@ void intel_dp_sink_dpms(struct intel_dp *intel_dp, int
mode)
mode == DRM_MODE_DPMS_ON ? "enable" : "disable");
}
-static bool intel_dp_get_hw_state(struct intel_encoder *encoder,
- enum pipe *pipe)
+static bool cpt_dp_port_selected(struct drm_i915_private *dev_priv,
+ enum port port, enum pipe *pipe)
{
- struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
- struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
- enum port port = encoder->port;
- u32 tmp;
- bool ret;
+ enum pipe p;
- if (!intel_display_power_get_if_enabled(dev_priv,
- encoder->power_domain))
- return false;
+ for_each_pipe(dev_priv, p) {
+ u32 val = I915_READ(TRANS_DP_CTL(p));
+
+ if ((val & TRANS_DP_PORT_SEL_MASK) == TRANS_DP_PORT_SEL(port)) {
+ *pipe = p;
+ return true;
+ }
+ }
- ret = false;
+ DRM_DEBUG_KMS("No pipe for DP port %c found\n", port_name(port));
- tmp = I915_READ(intel_dp->output_reg);
+ /* must initialize pipe to something for the asserts */
+ *pipe = PIPE_A;
- if (!(tmp & DP_PORT_EN))
- goto out;
+ return false;
+}
- if (IS_IVYBRIDGE(dev_priv) && port == PORT_A) {
- *pipe = PORT_TO_PIPE_CPT(tmp);
- } else if (HAS_PCH_CPT(dev_priv) && port != PORT_A) {
- enum pipe p;
+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;
- for_each_pipe(dev_priv, p) {
- u32 trans_dp = I915_READ(TRANS_DP_CTL(p));
- if (TRANS_DP_PIPE_TO_PORT(trans_dp) == port) {
- *pipe = p;
- ret = true;
+ val = I915_READ(dp_reg);
- goto out;
- }
- }
+ ret = val & DP_PORT_EN;
- DRM_DEBUG_KMS("No pipe for dp port 0x%x found\n",
- i915_mmio_reg_offset(intel_dp->output_reg));
+ /* 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 = DP_PORT_TO_PIPE_CHV(tmp);
+ *pipe = (val & DP_PIPE_SEL_MASK_CHV) >> DP_PIPE_SEL_SHIFT_CHV;
} else {
- *pipe = PORT_TO_PIPE(tmp);
+ *pipe = (val & DP_PIPE_SEL_MASK) >> DP_PIPE_SEL_SHIFT;
}
- ret = true;
+ 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->base);
+ bool ret;
+
+ if (!intel_display_power_get_if_enabled(dev_priv,
+ encoder->power_domain))
+ return false;
+
+ ret = intel_dp_port_enabled(dev_priv, intel_dp->output_reg,
+ encoder->port, pipe);
-out:
intel_display_power_put(dev_priv, encoder->power_domain);
return ret;
@@ -3673,8 +3688,9 @@ intel_dp_link_down(struct intel_encoder *encoder,
intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, false);
/* always enable with pattern 1 (as per spec) */
- DP &= ~(DP_PIPEB_SELECT | DP_LINK_TRAIN_MASK);
- DP |= DP_PORT_EN | DP_LINK_TRAIN_PAT_1;
+ DP &= ~(DP_PIPE_SEL_MASK | DP_LINK_TRAIN_MASK);
+ DP |= DP_PORT_EN | DP_PIPE_SEL(PIPE_A) |
+ DP_LINK_TRAIN_PAT_1;
I915_WRITE(intel_dp->output_reg, DP);
POSTING_READ(intel_dp->output_reg);
@@ -5248,14 +5264,14 @@ static void intel_edp_panel_vdd_sanitize(struct
intel_dp *intel_dp)
static enum pipe vlv_active_pipe(struct intel_dp *intel_dp)
{
struct drm_i915_private *dev_priv = to_i915(intel_dp_to_dev(intel_dp));
+ struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
+ enum pipe pipe;
- if ((intel_dp->DP & DP_PORT_EN) == 0)
- return INVALID_PIPE;
+ if (intel_dp_port_enabled(dev_priv, intel_dp->output_reg,
+ encoder->port, &pipe))
+ return pipe;
- if (IS_CHERRYVIEW(dev_priv))
- return DP_PORT_TO_PIPE_CHV(intel_dp->DP);
- else
- return PORT_TO_PIPE(intel_dp->DP);
+ return INVALID_PIPE;
}
void intel_dp_encoder_reset(struct drm_encoder *encoder)
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 11c0f3785f59..fd64016476a4 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1617,6 +1617,9 @@ void intel_csr_ucode_suspend(struct drm_i915_private *);
void intel_csr_ucode_resume(struct drm_i915_private *);
/* intel_dp.c */
+bool intel_dp_port_enabled(struct drm_i915_private *dev_priv,
+ i915_reg_t dp_reg, enum port port,
+ enum pipe *pipe);
bool intel_dp_init(struct drm_i915_private *dev_priv, i915_reg_t output_reg,
enum port port);
bool intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
--
2.16.1
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