[Intel-gfx] [PATCH 7/9] drm/i915: panel power sequencing for VLV eDP
Vijay Purushothaman
vijay.a.purushothaman at intel.com
Wed Sep 26 15:37:36 CEST 2012
PPS register offsets have changed in Valleyview.
Signed-off-by: Gajanan Bhat <gajanan.bhat at intel.com>
Signed-off-by: Vijay Purushothaman <vijay.a.purushothaman at intel.com>
Signed-off-by: Ben Widawsky <benjamin.widawsky at intel.com>
---
drivers/gpu/drm/i915/i915_reg.h | 9 +++
drivers/gpu/drm/i915/intel_dp.c | 122 +++++++++++++++++++++++++++------------
2 files changed, 93 insertions(+), 38 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 3f75ee6..e421847 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -3981,6 +3981,15 @@
#define PIPEB_PP_ON_DELAYS 0x61308
#define PIPEB_PP_OFF_DELAYS 0x6130c
#define PIPEB_PP_DIVISOR 0x61310
+#define VLV_PIPE_PP_STATUS(pipe) _PIPE(pipe, PIPEA_PP_STATUS, PIPEB_PP_STATUS)
+#define VLV_PIPE_PP_CONTROL(pipe) _PIPE(pipe, PIPEA_PP_CONTROL, PIPEB_PP_CONTROL)
+#define VLV_PIPE_PP_ON_DELAYS(pipe) \
+ _PIPE(pipe, PIPEA_PP_ON_DELAYS, PIPEB_PP_ON_DELAYS)
+#define VLV_PIPE_PP_OFF_DELAYS(pipe) \
+ _PIPE(pipe, PIPEA_PP_OFF_DELAYS, PIPEB_PP_OFF_DELAYS)
+#define VLV_PIPE_PP_DIVISOR(pipe) \
+ _PIPE(pipe, PIPEA_PP_DIVISOR, PIPEB_PP_DIVISOR)
+
#define PCH_PP_STATUS 0xc7200
#define PCH_PP_CONTROL 0xc7204
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index af57027..b944529 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -316,16 +316,20 @@ static bool ironlake_edp_have_panel_power(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_stat_reg;
- return (I915_READ(PCH_PP_STATUS) & PP_ON) != 0;
+ pp_stat_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_STATUS : PCH_PP_STATUS;
+ return (I915_READ(pp_stat_reg) & PP_ON) != 0;
}
static bool ironlake_edp_have_panel_vdd(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_ctrl_reg;
- return (I915_READ(PCH_PP_CONTROL) & EDP_FORCE_VDD) != 0;
+ pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL;
+ return (I915_READ(pp_ctrl_reg) & EDP_FORCE_VDD) != 0;
}
static void
@@ -333,14 +337,19 @@ intel_dp_check_edp(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_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(PCH_PP_STATUS),
- I915_READ(PCH_PP_CONTROL));
+ I915_READ(pp_stat_reg),
+ I915_READ(pp_ctrl_reg));
}
}
@@ -944,16 +953,20 @@ static void ironlake_wait_panel_status(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_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;
DRM_DEBUG_KMS("mask %08x value %08x status %08x control %08x\n",
- mask, value,
- I915_READ(PCH_PP_STATUS),
- I915_READ(PCH_PP_CONTROL));
+ mask, value,
+ I915_READ(pp_stat_reg),
+ I915_READ(pp_ctrl_reg));
- if (_wait_for((I915_READ(PCH_PP_STATUS) & mask) == value, 5000, 10)) {
+ if (_wait_for((I915_READ(pp_stat_reg) & mask) == value, 5000, 10)) {
DRM_ERROR("Panel status timeout: status %08x control %08x\n",
- I915_READ(PCH_PP_STATUS),
- I915_READ(PCH_PP_CONTROL));
+ I915_READ(pp_stat_reg),
+ I915_READ(pp_ctrl_reg));
}
}
@@ -980,9 +993,15 @@ static void ironlake_wait_panel_power_cycle(struct intel_dp *intel_dp)
* is locked
*/
-static u32 ironlake_get_pp_control(struct drm_i915_private *dev_priv)
+static u32 ironlake_get_pp_control(struct intel_dp *intel_dp)
{
- u32 control = I915_READ(PCH_PP_CONTROL);
+ struct drm_device *dev = intel_dp->base.base.dev;
+ 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 &= ~PANEL_UNLOCK_MASK;
control |= PANEL_UNLOCK_REGS;
@@ -994,6 +1013,7 @@ static void ironlake_edp_panel_vdd_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_stat_reg, pp_ctrl_reg;
if (!is_edp(intel_dp))
return;
@@ -1012,13 +1032,16 @@ static void ironlake_edp_panel_vdd_on(struct intel_dp *intel_dp)
if (!ironlake_edp_have_panel_power(intel_dp))
ironlake_wait_panel_power_cycle(intel_dp);
- pp = ironlake_get_pp_control(dev_priv);
+ pp = ironlake_get_pp_control(intel_dp);
pp |= EDP_FORCE_VDD;
- I915_WRITE(PCH_PP_CONTROL, pp);
- POSTING_READ(PCH_PP_CONTROL);
- DRM_DEBUG_KMS("PCH_PP_STATUS: 0x%08x PCH_PP_CONTROL: 0x%08x\n",
- I915_READ(PCH_PP_STATUS), I915_READ(PCH_PP_CONTROL));
+ pp_stat_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_STATUS : PCH_PP_STATUS;
+ pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL;
+
+ I915_WRITE(pp_ctrl_reg, pp);
+ POSTING_READ(pp_ctrl_reg);
+ DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n",
+ I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg));
/*
* If the panel wasn't on, delay before accessing aux channel
*/
@@ -1033,17 +1056,21 @@ static void ironlake_panel_vdd_off_sync(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_stat_reg, pp_ctrl_reg;
if (!intel_dp->want_panel_vdd && ironlake_edp_have_panel_vdd(intel_dp)) {
- pp = ironlake_get_pp_control(dev_priv);
+ pp = ironlake_get_pp_control(intel_dp);
pp &= ~EDP_FORCE_VDD;
- I915_WRITE(PCH_PP_CONTROL, pp);
- POSTING_READ(PCH_PP_CONTROL);
- /* Make sure sequencer is idle before allowing subsequent activity */
- DRM_DEBUG_KMS("PCH_PP_STATUS: 0x%08x PCH_PP_CONTROL: 0x%08x\n",
- I915_READ(PCH_PP_STATUS), I915_READ(PCH_PP_CONTROL));
+ pp_stat_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_STATUS : PCH_PP_STATUS;
+ pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL;
+ I915_WRITE(pp_ctrl_reg, pp);
+ POSTING_READ(pp_ctrl_reg);
+
+ /* Make sure sequencer is idle before allowing subsequent activity */
+ DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n",
+ I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg));
msleep(intel_dp->panel_power_down_delay);
}
}
@@ -1087,6 +1114,7 @@ static void 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_ctrl_reg;
if (!is_edp(intel_dp))
return;
@@ -1100,7 +1128,7 @@ static void ironlake_edp_panel_on(struct intel_dp *intel_dp)
ironlake_wait_panel_power_cycle(intel_dp);
- pp = ironlake_get_pp_control(dev_priv);
+ pp = ironlake_get_pp_control(intel_dp);
if (IS_GEN5(dev)) {
/* ILK workaround: disable reset around power sequence */
pp &= ~PANEL_POWER_RESET;
@@ -1112,8 +1140,10 @@ static void ironlake_edp_panel_on(struct intel_dp *intel_dp)
if (!IS_GEN5(dev))
pp |= PANEL_POWER_RESET;
- I915_WRITE(PCH_PP_CONTROL, pp);
- POSTING_READ(PCH_PP_CONTROL);
+ pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL;
+
+ I915_WRITE(pp_ctrl_reg, pp);
+ POSTING_READ(pp_ctrl_reg);
ironlake_wait_panel_on(intel_dp);
@@ -1129,6 +1159,7 @@ static void ironlake_edp_panel_off(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_ctrl_reg;
if (!is_edp(intel_dp))
return;
@@ -1137,12 +1168,15 @@ static void ironlake_edp_panel_off(struct intel_dp *intel_dp)
WARN(!intel_dp->want_panel_vdd, "Need VDD to turn off panel\n");
- pp = ironlake_get_pp_control(dev_priv);
+ pp = ironlake_get_pp_control(intel_dp);
/* We need to switch off panel power _and_ force vdd, for otherwise some
* panels get very unhappy and cease to work. */
pp &= ~(POWER_TARGET_ON | EDP_FORCE_VDD | PANEL_POWER_RESET | EDP_BLC_ENABLE);
- I915_WRITE(PCH_PP_CONTROL, pp);
- POSTING_READ(PCH_PP_CONTROL);
+
+ pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL;
+
+ I915_WRITE(pp_ctrl_reg, pp);
+ POSTING_READ(pp_ctrl_reg);
intel_dp->want_panel_vdd = false;
@@ -1154,6 +1188,7 @@ static void ironlake_edp_backlight_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_ctrl_reg;
if (!is_edp(intel_dp))
return;
@@ -1166,10 +1201,13 @@ static void ironlake_edp_backlight_on(struct intel_dp *intel_dp)
* allowing it to appear.
*/
msleep(intel_dp->backlight_on_delay);
- pp = ironlake_get_pp_control(dev_priv);
+ pp = ironlake_get_pp_control(intel_dp);
pp |= EDP_BLC_ENABLE;
- I915_WRITE(PCH_PP_CONTROL, pp);
- POSTING_READ(PCH_PP_CONTROL);
+
+ pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL;
+
+ I915_WRITE(pp_ctrl_reg, pp);
+ POSTING_READ(pp_ctrl_reg);
}
static void ironlake_edp_backlight_off(struct intel_dp *intel_dp)
@@ -1177,15 +1215,17 @@ static void ironlake_edp_backlight_off(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_ctrl_reg;
if (!is_edp(intel_dp))
return;
DRM_DEBUG_KMS("\n");
- pp = ironlake_get_pp_control(dev_priv);
+ pp = ironlake_get_pp_control(intel_dp);
pp &= ~EDP_BLC_ENABLE;
- I915_WRITE(PCH_PP_CONTROL, pp);
- POSTING_READ(PCH_PP_CONTROL);
+ pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL;
+ I915_WRITE(pp_ctrl_reg, pp);
+ POSTING_READ(pp_ctrl_reg);
msleep(intel_dp->backlight_off_delay);
}
@@ -2543,9 +2583,15 @@ intel_dp_init(struct drm_device *dev, int output_reg, enum port port)
u32 pp_on, pp_off, pp_div;
struct edid *edid;
- pp_on = I915_READ(PCH_PP_ON_DELAYS);
- pp_off = I915_READ(PCH_PP_OFF_DELAYS);
- pp_div = I915_READ(PCH_PP_DIVISOR);
+ if (IS_VALLEYVIEW(dev)) {
+ pp_on = I915_READ(PIPEA_PP_ON_DELAYS);
+ pp_off = I915_READ(PIPEA_PP_OFF_DELAYS);
+ pp_div = I915_READ(PIPEA_PP_DIVISOR);
+ } else {
+ pp_on = I915_READ(PCH_PP_ON_DELAYS);
+ pp_off = I915_READ(PCH_PP_OFF_DELAYS);
+ pp_div = I915_READ(PCH_PP_DIVISOR);
+ }
if (!pp_on || !pp_off || !pp_div) {
DRM_INFO("bad panel power sequencing delays, disabling panel\n");
--
1.7.9.5
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