blob: 9e43b0e7279481000fafc05d255d572ae22eda86 [file] [log] [blame]
From cd7c5806c015789ce5c74493a195188fa314800a Mon Sep 17 00:00:00 2001
From: Jani Nikula <jani.nikula@intel.com>
Date: Fri, 6 Sep 2013 07:40:05 +0300
Subject: drm/i915: add support for per-pipe power sequencing on vlv
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VLV has per-pipe PP registers. Set up power sequencing on mode set. The
connector init time setup is problematic, since we don't have a pipe at
that time. Cook up something.
v2:
- use vlv_power_sequencer_pipe() also in _pp_{ctrl,stat}_reg()
- use PANEL_PORT_SELECT_DPC_VLV (Ville)
v3: make checkpatch happier
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
[danvet: Make checkpatch a bit more happier still ...]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
(cherry picked from commit bf13e81b904a37d94d83dd6c3b53a147719a3ead)
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
---
drivers/gpu/drm/i915/intel_dp.c | 142 ++++++++++++++++++++++++++++------------
1 file changed, 100 insertions(+), 42 deletions(-)
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -237,24 +237,77 @@ intel_hrawclk(struct drm_device *dev)
}
}
+static void
+intel_dp_init_panel_power_sequencer(struct drm_device *dev,
+ struct intel_dp *intel_dp,
+ struct edp_power_seq *out);
+static void
+intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev,
+ struct intel_dp *intel_dp,
+ struct edp_power_seq *out);
+
+static enum pipe
+vlv_power_sequencer_pipe(struct intel_dp *intel_dp)
+{
+ struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
+ struct drm_crtc *crtc = intel_dig_port->base.base.crtc;
+ struct drm_device *dev = intel_dig_port->base.base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ enum port port = intel_dig_port->port;
+ enum pipe pipe;
+
+ /* modeset should have pipe */
+ if (crtc)
+ return to_intel_crtc(crtc)->pipe;
+
+ /* init time, try to find a pipe with this port selected */
+ for (pipe = PIPE_A; pipe <= PIPE_B; pipe++) {
+ u32 port_sel = I915_READ(VLV_PIPE_PP_ON_DELAYS(pipe)) &
+ PANEL_PORT_SELECT_MASK;
+ if (port_sel == PANEL_PORT_SELECT_DPB_VLV && port == PORT_B)
+ return pipe;
+ if (port_sel == PANEL_PORT_SELECT_DPC_VLV && port == PORT_C)
+ return pipe;
+ }
+
+ /* shrug */
+ return PIPE_A;
+}
+
+static u32 _pp_ctrl_reg(struct intel_dp *intel_dp)
+{
+ struct drm_device *dev = intel_dp_to_dev(intel_dp);
+
+ if (HAS_PCH_SPLIT(dev))
+ return PCH_PP_CONTROL;
+ else
+ return VLV_PIPE_PP_CONTROL(vlv_power_sequencer_pipe(intel_dp));
+}
+
+static u32 _pp_stat_reg(struct intel_dp *intel_dp)
+{
+ struct drm_device *dev = intel_dp_to_dev(intel_dp);
+
+ if (HAS_PCH_SPLIT(dev))
+ return PCH_PP_STATUS;
+ else
+ return VLV_PIPE_PP_STATUS(vlv_power_sequencer_pipe(intel_dp));
+}
+
static bool ironlake_edp_have_panel_power(struct intel_dp *intel_dp)
{
struct drm_device *dev = intel_dp_to_dev(intel_dp);
struct drm_i915_private *dev_priv = dev->dev_private;
- u32 pp_stat_reg;
- pp_stat_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_STATUS : PCH_PP_STATUS;
- return (I915_READ(pp_stat_reg) & PP_ON) != 0;
+ return (I915_READ(_pp_stat_reg(intel_dp)) & PP_ON) != 0;
}
static bool ironlake_edp_have_panel_vdd(struct intel_dp *intel_dp)
{
struct drm_device *dev = intel_dp_to_dev(intel_dp);
struct drm_i915_private *dev_priv = dev->dev_private;
- u32 pp_ctrl_reg;
- pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL;
- return (I915_READ(pp_ctrl_reg) & EDP_FORCE_VDD) != 0;
+ return (I915_READ(_pp_ctrl_reg(intel_dp)) & EDP_FORCE_VDD) != 0;
}
static void
@@ -262,19 +315,15 @@ intel_dp_check_edp(struct intel_dp *inte
{
struct drm_device *dev = intel_dp_to_dev(intel_dp);
struct drm_i915_private *dev_priv = dev->dev_private;
- u32 pp_stat_reg, pp_ctrl_reg;
if (!is_edp(intel_dp))
return;
- pp_stat_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_STATUS : PCH_PP_STATUS;
- pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL;
-
if (!ironlake_edp_have_panel_power(intel_dp) && !ironlake_edp_have_panel_vdd(intel_dp)) {
WARN(1, "eDP powered off while attempting aux channel communication.\n");
DRM_DEBUG_KMS("Status 0x%08x Control 0x%08x\n",
- I915_READ(pp_stat_reg),
- I915_READ(pp_ctrl_reg));
+ I915_READ(_pp_stat_reg(intel_dp)),
+ I915_READ(_pp_ctrl_reg(intel_dp)));
}
}
@@ -959,8 +1008,8 @@ static void ironlake_wait_panel_status(s
struct drm_i915_private *dev_priv = dev->dev_private;
u32 pp_stat_reg, pp_ctrl_reg;
- pp_stat_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_STATUS : PCH_PP_STATUS;
- pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL;
+ pp_stat_reg = _pp_stat_reg(intel_dp);
+ pp_ctrl_reg = _pp_ctrl_reg(intel_dp);
DRM_DEBUG_KMS("mask %08x value %08x status %08x control %08x\n",
mask, value,
@@ -1002,11 +1051,8 @@ static u32 ironlake_get_pp_control(stru
struct drm_device *dev = intel_dp_to_dev(intel_dp);
struct drm_i915_private *dev_priv = dev->dev_private;
u32 control;
- u32 pp_ctrl_reg;
-
- pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL;
- control = I915_READ(pp_ctrl_reg);
+ control = I915_READ(_pp_ctrl_reg(intel_dp));
control &= ~PANEL_UNLOCK_MASK;
control |= PANEL_UNLOCK_REGS;
return control;
@@ -1039,8 +1085,8 @@ void ironlake_edp_panel_vdd_on(struct in
pp = ironlake_get_pp_control(intel_dp);
pp |= EDP_FORCE_VDD;
- pp_stat_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_STATUS : PCH_PP_STATUS;
- pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL;
+ pp_stat_reg = _pp_stat_reg(intel_dp);
+ pp_ctrl_reg = _pp_ctrl_reg(intel_dp);
I915_WRITE(pp_ctrl_reg, pp);
POSTING_READ(pp_ctrl_reg);
@@ -1068,8 +1114,8 @@ static void ironlake_panel_vdd_off_sync(
pp = ironlake_get_pp_control(intel_dp);
pp &= ~EDP_FORCE_VDD;
- pp_stat_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_STATUS : PCH_PP_STATUS;
- pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL;
+ pp_stat_reg = _pp_ctrl_reg(intel_dp);
+ pp_ctrl_reg = _pp_stat_reg(intel_dp);
I915_WRITE(pp_ctrl_reg, pp);
POSTING_READ(pp_ctrl_reg);
@@ -1134,20 +1180,19 @@ void ironlake_edp_panel_on(struct intel_
ironlake_wait_panel_power_cycle(intel_dp);
+ pp_ctrl_reg = _pp_ctrl_reg(intel_dp);
pp = ironlake_get_pp_control(intel_dp);
if (IS_GEN5(dev)) {
/* ILK workaround: disable reset around power sequence */
pp &= ~PANEL_POWER_RESET;
- I915_WRITE(PCH_PP_CONTROL, pp);
- POSTING_READ(PCH_PP_CONTROL);
+ I915_WRITE(pp_ctrl_reg, pp);
+ POSTING_READ(pp_ctrl_reg);
}
pp |= POWER_TARGET_ON;
if (!IS_GEN5(dev))
pp |= PANEL_POWER_RESET;
- pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL;
-
I915_WRITE(pp_ctrl_reg, pp);
POSTING_READ(pp_ctrl_reg);
@@ -1155,8 +1200,8 @@ void ironlake_edp_panel_on(struct intel_
if (IS_GEN5(dev)) {
pp |= PANEL_POWER_RESET; /* restore panel reset bit */
- I915_WRITE(PCH_PP_CONTROL, pp);
- POSTING_READ(PCH_PP_CONTROL);
+ I915_WRITE(pp_ctrl_reg, pp);
+ POSTING_READ(pp_ctrl_reg);
}
}
@@ -1179,7 +1224,7 @@ void ironlake_edp_panel_off(struct intel
* panels get very unhappy and cease to work. */
pp &= ~(POWER_TARGET_ON | EDP_FORCE_VDD | PANEL_POWER_RESET | EDP_BLC_ENABLE);
- pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL;
+ pp_ctrl_reg = _pp_ctrl_reg(intel_dp);
I915_WRITE(pp_ctrl_reg, pp);
POSTING_READ(pp_ctrl_reg);
@@ -1212,7 +1257,7 @@ void ironlake_edp_backlight_on(struct in
pp = ironlake_get_pp_control(intel_dp);
pp |= EDP_BLC_ENABLE;
- pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL;
+ pp_ctrl_reg = _pp_ctrl_reg(intel_dp);
I915_WRITE(pp_ctrl_reg, pp);
POSTING_READ(pp_ctrl_reg);
@@ -1236,7 +1281,7 @@ void ironlake_edp_backlight_off(struct i
pp = ironlake_get_pp_control(intel_dp);
pp &= ~EDP_BLC_ENABLE;
- pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL;
+ pp_ctrl_reg = _pp_ctrl_reg(intel_dp);
I915_WRITE(pp_ctrl_reg, pp);
POSTING_READ(pp_ctrl_reg);
@@ -1763,6 +1808,7 @@ static void vlv_pre_enable_dp(struct int
struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc);
int port = vlv_dport_to_channel(dport);
int pipe = intel_crtc->pipe;
+ struct edp_power_seq power_seq;
u32 val;
mutex_lock(&dev_priv->dpio_lock);
@@ -1780,6 +1826,11 @@ static void vlv_pre_enable_dp(struct int
mutex_unlock(&dev_priv->dpio_lock);
+ /* init power sequencer on this pipe and port */
+ intel_dp_init_panel_power_sequencer(dev, intel_dp, &power_seq);
+ intel_dp_init_panel_power_sequencer_registers(dev, intel_dp,
+ &power_seq);
+
intel_enable_dp(encoder);
vlv_wait_port_ready(dev_priv, port);
@@ -3188,24 +3239,26 @@ intel_dp_init_panel_power_sequencer(stru
struct drm_i915_private *dev_priv = dev->dev_private;
struct edp_power_seq cur, vbt, spec, final;
u32 pp_on, pp_off, pp_div, pp;
- int pp_control_reg, pp_on_reg, pp_off_reg, pp_div_reg;
+ int pp_ctrl_reg, pp_on_reg, pp_off_reg, pp_div_reg;
if (HAS_PCH_SPLIT(dev)) {
- pp_control_reg = PCH_PP_CONTROL;
+ pp_ctrl_reg = PCH_PP_CONTROL;
pp_on_reg = PCH_PP_ON_DELAYS;
pp_off_reg = PCH_PP_OFF_DELAYS;
pp_div_reg = PCH_PP_DIVISOR;
} else {
- pp_control_reg = PIPEA_PP_CONTROL;
- pp_on_reg = PIPEA_PP_ON_DELAYS;
- pp_off_reg = PIPEA_PP_OFF_DELAYS;
- pp_div_reg = PIPEA_PP_DIVISOR;
+ enum pipe pipe = vlv_power_sequencer_pipe(intel_dp);
+
+ pp_ctrl_reg = VLV_PIPE_PP_CONTROL(pipe);
+ pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe);
+ pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe);
+ pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe);
}
/* Workaround: Need to write PP_CONTROL with the unlock key as
* the very first thing. */
pp = ironlake_get_pp_control(intel_dp);
- I915_WRITE(pp_control_reg, pp);
+ I915_WRITE(pp_ctrl_reg, pp);
pp_on = I915_READ(pp_on_reg);
pp_off = I915_READ(pp_off_reg);
@@ -3293,9 +3346,11 @@ intel_dp_init_panel_power_sequencer_regi
pp_off_reg = PCH_PP_OFF_DELAYS;
pp_div_reg = PCH_PP_DIVISOR;
} else {
- pp_on_reg = PIPEA_PP_ON_DELAYS;
- pp_off_reg = PIPEA_PP_OFF_DELAYS;
- pp_div_reg = PIPEA_PP_DIVISOR;
+ enum pipe pipe = vlv_power_sequencer_pipe(intel_dp);
+
+ pp_on_reg = VLV_PIPE_PP_ON_DELAYS(pipe);
+ pp_off_reg = VLV_PIPE_PP_OFF_DELAYS(pipe);
+ pp_div_reg = VLV_PIPE_PP_DIVISOR(pipe);
}
/* And finally store the new values in the power sequencer. */
@@ -3312,7 +3367,10 @@ intel_dp_init_panel_power_sequencer_regi
/* Haswell doesn't have any port selection bits for the panel
* power sequencer any more. */
if (IS_VALLEYVIEW(dev)) {
- port_sel = I915_READ(pp_on_reg) & 0xc0000000;
+ if (dp_to_dig_port(intel_dp)->port == PORT_B)
+ port_sel = PANEL_PORT_SELECT_DPB_VLV;
+ else
+ port_sel = PANEL_PORT_SELECT_DPC_VLV;
} else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) {
if (dp_to_dig_port(intel_dp)->port == PORT_A)
port_sel = PANEL_PORT_SELECT_DPA;