BXT does not have PP_DIV register. Making changes to handle this.
Signed-off-by: Vandana Kannan <vandana.kannan@xxxxxxxxx>
Signed-off-by: Kumar, Mahesh <mahesh1.kumar@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_reg.h | 2 ++
drivers/gpu/drm/i915/i915_suspend.c | 8 ++++--
drivers/gpu/drm/i915/intel_dp.c | 56 +++++++++++++++++++++++++++++--------
3 files changed, 52 insertions(+), 14 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 36805b6..580f5cb 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -6315,6 +6315,8 @@ enum skl_disp_power_wells {
#define PCH_PP_CONTROL 0xc7204
#define PANEL_UNLOCK_REGS (0xabcd << 16)
#define PANEL_UNLOCK_MASK (0xffff << 16)
+#define BXT_POWER_CYCLE_DELAY_MASK (0x1f0)
+#define BXT_POWER_CYCLE_DELAY_SHIFT 4
#define EDP_FORCE_VDD (1 << 3)
#define EDP_BLC_ENABLE (1 << 2)
#define PANEL_POWER_RESET (1 << 1)
diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c
index e91d637..24e0b06 100644
--- a/drivers/gpu/drm/i915/i915_suspend.c
+++ b/drivers/gpu/drm/i915/i915_suspend.c
@@ -48,7 +48,9 @@ static void i915_save_display(struct drm_device *dev)
dev_priv->regfile.savePP_CONTROL = I915_READ(PCH_PP_CONTROL);
dev_priv->regfile.savePP_ON_DELAYS = I915_READ(PCH_PP_ON_DELAYS);
dev_priv->regfile.savePP_OFF_DELAYS = I915_READ(PCH_PP_OFF_DELAYS);
- dev_priv->regfile.savePP_DIVISOR = I915_READ(PCH_PP_DIVISOR);
+ if (!IS_BROXTON(dev))
+ dev_priv->regfile.savePP_DIVISOR =
+ I915_READ(PCH_PP_DIVISOR);
} else if (!IS_VALLEYVIEW(dev)) {
dev_priv->regfile.savePP_CONTROL = I915_READ(PP_CONTROL);
dev_priv->regfile.savePP_ON_DELAYS = I915_READ(PP_ON_DELAYS);
@@ -82,7 +84,9 @@ static void i915_restore_display(struct drm_device *dev)
if (!HAS_GMCH_DISPLAY(dev)) {
I915_WRITE(PCH_PP_ON_DELAYS, dev_priv->regfile.savePP_ON_DELAYS);
I915_WRITE(PCH_PP_OFF_DELAYS, dev_priv->regfile.savePP_OFF_DELAYS);
- I915_WRITE(PCH_PP_DIVISOR, dev_priv->regfile.savePP_DIVISOR);
+ if (!IS_BROXTON(dev))
+ I915_WRITE(PCH_PP_DIVISOR,
+ dev_priv->regfile.savePP_DIVISOR);
I915_WRITE(PCH_PP_CONTROL, dev_priv->regfile.savePP_CONTROL);
} else if (!IS_VALLEYVIEW(dev)) {
I915_WRITE(PP_ON_DELAYS, dev_priv->regfile.savePP_ON_DELAYS);
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 68e10c1..37514d3 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -4954,8 +4954,8 @@ intel_dp_init_panel_power_sequencer(struct drm_device *dev,
struct drm_i915_private *dev_priv = dev->dev_private;
struct edp_power_seq cur, vbt, spec,
*final = &intel_dp->pps_delays;
- u32 pp_on, pp_off, pp_div, pp;
- int pp_ctrl_reg, pp_on_reg, pp_off_reg, pp_div_reg;
+ u32 pp_on, pp_off, pp_div = 0, pp_ctl = 0, pp;
+ int pp_ctrl_reg, pp_on_reg, pp_off_reg, pp_div_reg = 0;
lockdep_assert_held(&dev_priv->pps_mutex);
@@ -4964,10 +4964,16 @@ intel_dp_init_panel_power_sequencer(struct drm_device *dev,
return;
if (!HAS_GMCH_DISPLAY(dev)) {
+ /*
+ * TODO: BXT has 2 sets of PPS registers.
+ * Correct Register for Broxton need to be identified
+ * using VBT. hardcoding for now
+ */
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;
+ if (!IS_BROXTON(dev))
+ pp_div_reg = PCH_PP_DIVISOR;
} else {
enum pipe pipe = vlv_power_sequencer_pipe(intel_dp);
@@ -4984,7 +4990,10 @@ intel_dp_init_panel_power_sequencer(struct drm_device *dev,
pp_on = I915_READ(pp_on_reg);
pp_off = I915_READ(pp_off_reg);
- pp_div = I915_READ(pp_div_reg);
+ if (!IS_BROXTON(dev))
+ pp_div = I915_READ(pp_div_reg);
+ else
+ pp_ctl = I915_READ(pp_ctrl_reg);
/* Pull timing values out of registers */
cur.t1_t3 = (pp_on & PANEL_POWER_UP_DELAY_MASK) >>
@@ -4999,8 +5008,12 @@ intel_dp_init_panel_power_sequencer(struct drm_device *dev,
cur.t10 = (pp_off & PANEL_POWER_DOWN_DELAY_MASK) >>
PANEL_POWER_DOWN_DELAY_SHIFT;
- cur.t11_t12 = ((pp_div & PANEL_POWER_CYCLE_DELAY_MASK) >>
- PANEL_POWER_CYCLE_DELAY_SHIFT) * 1000;
+ if (IS_BROXTON(dev))
+ cur.t11_t12 = (((pp_ctl & BXT_POWER_CYCLE_DELAY_MASK) >>
+ BXT_POWER_CYCLE_DELAY_SHIFT) - 1) * 1000;
+ else
+ cur.t11_t12 = ((pp_div & PANEL_POWER_CYCLE_DELAY_MASK) >>
+ PANEL_POWER_CYCLE_DELAY_SHIFT) * 1000;
DRM_DEBUG_KMS("cur t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n",
cur.t1_t3, cur.t8, cur.t9, cur.t10, cur.t11_t12);
@@ -5057,16 +5070,22 @@ intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev,
struct drm_i915_private *dev_priv = dev->dev_private;
u32 pp_on, pp_off, pp_div, port_sel = 0;
int div = HAS_PCH_SPLIT(dev) ? intel_pch_rawclk(dev) : intel_hrawclk(dev);
- int pp_on_reg, pp_off_reg, pp_div_reg;
+ int pp_on_reg, pp_off_reg, pp_div_reg = 0, pp_ctrl_reg;
enum port port = dp_to_dig_port(intel_dp)->port;
const struct edp_power_seq *seq = &intel_dp->pps_delays;
lockdep_assert_held(&dev_priv->pps_mutex);
if (!HAS_GMCH_DISPLAY(dev)) {
+ /*
+ * TODO: Correct Register for Broxton need to be identified
+ * using VBT. hardcoding for now
+ */
pp_on_reg = PCH_PP_ON_DELAYS;
pp_off_reg = PCH_PP_OFF_DELAYS;
- pp_div_reg = PCH_PP_DIVISOR;
+ pp_ctrl_reg = PCH_PP_CONTROL;
+ if (!IS_BROXTON(dev))
+ pp_div_reg = PCH_PP_DIVISOR;
} else {
enum pipe pipe = vlv_power_sequencer_pipe(intel_dp);
@@ -5089,9 +5108,16 @@ intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev,
(seq->t10 << PANEL_POWER_DOWN_DELAY_SHIFT);
/* Compute the divisor for the pp clock, simply match the Bspec
* formula. */
- pp_div = ((100 * div)/2 - 1) << PP_REFERENCE_DIVIDER_SHIFT;
- pp_div |= (DIV_ROUND_UP(seq->t11_t12, 1000)
- << PANEL_POWER_CYCLE_DELAY_SHIFT);
+ if (IS_BROXTON(dev)) {
+ pp_div = I915_READ(pp_ctrl_reg);
+ pp_div &= ~BXT_POWER_CYCLE_DELAY_MASK;
+ pp_div |= (DIV_ROUND_UP((seq->t11_t12 + 1), 1000)
+ << BXT_POWER_CYCLE_DELAY_SHIFT);
+ } else {
+ pp_div = ((100 * div)/2 - 1) << PP_REFERENCE_DIVIDER_SHIFT;
+ pp_div |= (DIV_ROUND_UP(seq->t11_t12, 1000)
+ << PANEL_POWER_CYCLE_DELAY_SHIFT);
+ }
/* Haswell doesn't have any port selection bits for the panel
* power sequencer any more. */
@@ -5108,11 +5134,17 @@ intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev,
I915_WRITE(pp_on_reg, pp_on);
I915_WRITE(pp_off_reg, pp_off);
- I915_WRITE(pp_div_reg, pp_div);
+ if (IS_BROXTON(dev))
+ I915_WRITE(pp_ctrl_reg, pp_div);
+ else
+ I915_WRITE(pp_div_reg, pp_div);
DRM_DEBUG_KMS("panel power sequencer register settings: PP_ON %#x, PP_OFF %#x, PP_DIV %#x\n",
I915_READ(pp_on_reg),
I915_READ(pp_off_reg),
+ IS_BROXTON(dev) ?
+ ((I915_READ(pp_ctrl_reg) && BXT_POWER_CYCLE_DELAY_MASK)
+ >> BXT_POWER_CYCLE_DELAY_SHIFT) :
I915_READ(pp_div_reg));
}
--
2.0.1
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