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drm/i915/chv: Force clock buffer enables

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Try to force the PHY clock buffer enables to make the clock routing
work.

v2: Fix the pipe B case to actually enable CH0 clock buffers

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2014-05-27 16:30:18 +03:00 committed by Daniel Vetter
parent 9197c88bf9
commit b9e5ac3c18
3 changed files with 56 additions and 0 deletions
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18
drivers/gpu/drm/i915/i915_reg.h
View file

@ -881,6 +881,16 @@ enum punit_power_well {
#define DPIO_CHV_PROP_COEFF_SHIFT 0
#define CHV_PLL_DW6(ch) _PIPE(ch, _CHV_PLL_DW6_CH0, _CHV_PLL_DW6_CH1)
#define _CHV_CMN_DW5_CH0 0x8114
#define CHV_BUFRIGHTENA1_DISABLE (0 << 20)
#define CHV_BUFRIGHTENA1_NORMAL (1 << 20)
#define CHV_BUFRIGHTENA1_FORCE (3 << 20)
#define CHV_BUFRIGHTENA1_MASK (3 << 20)
#define CHV_BUFLEFTENA1_DISABLE (0 << 22)
#define CHV_BUFLEFTENA1_NORMAL (1 << 22)
#define CHV_BUFLEFTENA1_FORCE (3 << 22)
#define CHV_BUFLEFTENA1_MASK (3 << 22)
#define _CHV_CMN_DW13_CH0 0x8134
#define _CHV_CMN_DW0_CH1 0x8080
#define DPIO_CHV_S1_DIV_SHIFT 21
@ -895,6 +905,14 @@ enum punit_power_well {
#define _CHV_CMN_DW1_CH1 0x8084
#define DPIO_AFC_RECAL (1 << 14)
#define DPIO_DCLKP_EN (1 << 13)
#define CHV_BUFLEFTENA2_DISABLE (0 << 17) /* CL2 DW1 only */
#define CHV_BUFLEFTENA2_NORMAL (1 << 17) /* CL2 DW1 only */
#define CHV_BUFLEFTENA2_FORCE (3 << 17) /* CL2 DW1 only */
#define CHV_BUFLEFTENA2_MASK (3 << 17) /* CL2 DW1 only */
#define CHV_BUFRIGHTENA2_DISABLE (0 << 19) /* CL2 DW1 only */
#define CHV_BUFRIGHTENA2_NORMAL (1 << 19) /* CL2 DW1 only */
#define CHV_BUFRIGHTENA2_FORCE (3 << 19) /* CL2 DW1 only */
#define CHV_BUFRIGHTENA2_MASK (3 << 19) /* CL2 DW1 only */
#define CHV_CMN_DW14(ch) _PIPE(ch, _CHV_CMN_DW14_CH0, _CHV_CMN_DW1_CH1)
#define _CHV_CMN_DW19_CH0 0x814c

19
drivers/gpu/drm/i915/intel_dp.c
View file

@ -2132,6 +2132,25 @@ static void chv_dp_pre_pll_enable(struct intel_encoder *encoder)
mutex_lock(&dev_priv->dpio_lock);
/* program left/right clock distribution */
if (pipe != PIPE_B) {
val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0);
val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK);
if (ch == DPIO_CH0)
val |= CHV_BUFLEFTENA1_FORCE;
if (ch == DPIO_CH1)
val |= CHV_BUFRIGHTENA1_FORCE;
vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val);
} else {
val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1);
val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK);
if (ch == DPIO_CH0)
val |= CHV_BUFLEFTENA2_FORCE;
if (ch == DPIO_CH1)
val |= CHV_BUFRIGHTENA2_FORCE;
vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val);
}
/* program clock channel usage */
val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(ch));
val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE;

19
drivers/gpu/drm/i915/intel_hdmi.c
View file

@ -1242,6 +1242,25 @@ static void chv_hdmi_pre_pll_enable(struct intel_encoder *encoder)
mutex_lock(&dev_priv->dpio_lock);
/* program left/right clock distribution */
if (pipe != PIPE_B) {
val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0);
val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK);
if (ch == DPIO_CH0)
val |= CHV_BUFLEFTENA1_FORCE;
if (ch == DPIO_CH1)
val |= CHV_BUFRIGHTENA1_FORCE;
vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val);
} else {
val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1);
val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK);
if (ch == DPIO_CH0)
val |= CHV_BUFLEFTENA2_FORCE;
if (ch == DPIO_CH1)
val |= CHV_BUFRIGHTENA2_FORCE;
vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val);
}
/* program clock channel usage */
val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(ch));
val |= CHV_PCS_USEDCLKCHANNEL_OVRRIDE;