diff --git a/drivers/gpu/drm/i915/intel_dpio_phy.c b/drivers/gpu/drm/i915/intel_dpio_phy.c index 1b1fba16d4e9..6711e3a53f13 100644 --- a/drivers/gpu/drm/i915/intel_dpio_phy.c +++ b/drivers/gpu/drm/i915/intel_dpio_phy.c @@ -123,6 +123,13 @@ struct bxt_ddi_phy_info { */ bool dual_channel; + /** + * @rcomp_phy: If -1, indicates this phy has its own rcomp resistor. + * Otherwise the GRC value will be copied from the phy indicated by + * this field. + */ + enum dpio_phy rcomp_phy; + /** * @channel: struct containing per channel information. */ @@ -137,6 +144,7 @@ struct bxt_ddi_phy_info { static const struct bxt_ddi_phy_info bxt_ddi_phy_info[] = { [DPIO_PHY0] = { .dual_channel = true, + .rcomp_phy = DPIO_PHY1, .channel = { [DPIO_CH0] = { .port = PORT_B }, @@ -145,6 +153,7 @@ static const struct bxt_ddi_phy_info bxt_ddi_phy_info[] = { }, [DPIO_PHY1] = { .dual_channel = false, + .rcomp_phy = -1, .channel = { [DPIO_CH0] = { .port = PORT_A }, @@ -214,9 +223,10 @@ bool bxt_ddi_phy_is_enabled(struct drm_i915_private *dev_priv, return false; } - if (phy == DPIO_PHY1 && - !(I915_READ(BXT_PORT_REF_DW3(DPIO_PHY1)) & GRC_DONE)) { - DRM_DEBUG_DRIVER("DDI PHY 1 powered, but GRC isn't done\n"); + if (phy_info->rcomp_phy == -1 && + !(I915_READ(BXT_PORT_REF_DW3(phy)) & GRC_DONE)) { + DRM_DEBUG_DRIVER("DDI PHY %d powered, but GRC isn't done\n", + phy); return false; } @@ -261,14 +271,15 @@ static void bxt_phy_wait_grc_done(struct drm_i915_private *dev_priv, DRM_ERROR("timeout waiting for PHY%d GRC\n", phy); } -void bxt_ddi_phy_init(struct drm_i915_private *dev_priv, enum dpio_phy phy) +static void _bxt_ddi_phy_init(struct drm_i915_private *dev_priv, + enum dpio_phy phy) { const struct bxt_ddi_phy_info *phy_info = &bxt_ddi_phy_info[phy]; u32 val; if (bxt_ddi_phy_is_enabled(dev_priv, phy)) { /* Still read out the GRC value for state verification */ - if (phy == DPIO_PHY0) + if (phy_info->rcomp_phy != -1) dev_priv->bxt_phy_grc = bxt_get_grc(dev_priv, phy); if (bxt_ddi_phy_verify_state(dev_priv, phy)) { @@ -338,30 +349,32 @@ void bxt_ddi_phy_init(struct drm_i915_private *dev_priv, enum dpio_phy phy) val |= OCL2_LDOFUSE_PWR_DIS; I915_WRITE(BXT_PORT_CL1CM_DW30(phy), val); - if (phy == DPIO_PHY0) { + if (phy_info->rcomp_phy != -1) { uint32_t grc_code; /* * PHY0 isn't connected to an RCOMP resistor so copy over * the corresponding calibrated value from PHY1, and disable * the automatic calibration on PHY0. */ - val = dev_priv->bxt_phy_grc = bxt_get_grc(dev_priv, DPIO_PHY1); + val = dev_priv->bxt_phy_grc = bxt_get_grc(dev_priv, + phy_info->rcomp_phy); grc_code = val << GRC_CODE_FAST_SHIFT | val << GRC_CODE_SLOW_SHIFT | val; - I915_WRITE(BXT_PORT_REF_DW6(DPIO_PHY0), grc_code); + I915_WRITE(BXT_PORT_REF_DW6(phy), grc_code); - val = I915_READ(BXT_PORT_REF_DW8(DPIO_PHY0)); + val = I915_READ(BXT_PORT_REF_DW8(phy)); val |= GRC_DIS | GRC_RDY_OVRD; - I915_WRITE(BXT_PORT_REF_DW8(DPIO_PHY0), val); + I915_WRITE(BXT_PORT_REF_DW8(phy), val); } val = I915_READ(BXT_PHY_CTL_FAMILY(phy)); val |= COMMON_RESET_DIS; I915_WRITE(BXT_PHY_CTL_FAMILY(phy), val); - if (phy == DPIO_PHY1) - bxt_phy_wait_grc_done(dev_priv, DPIO_PHY1); + if (phy_info->rcomp_phy == -1) + bxt_phy_wait_grc_done(dev_priv, phy); + } void bxt_ddi_phy_uninit(struct drm_i915_private *dev_priv, enum dpio_phy phy) @@ -377,6 +390,31 @@ void bxt_ddi_phy_uninit(struct drm_i915_private *dev_priv, enum dpio_phy phy) I915_WRITE(BXT_P_CR_GT_DISP_PWRON, val); } +void bxt_ddi_phy_init(struct drm_i915_private *dev_priv, enum dpio_phy phy) +{ + const struct bxt_ddi_phy_info *phy_info = &bxt_ddi_phy_info[phy]; + enum dpio_phy rcomp_phy = phy_info->rcomp_phy; + bool was_enabled; + + lockdep_assert_held(&dev_priv->power_domains.lock); + + if (rcomp_phy != -1) { + was_enabled = bxt_ddi_phy_is_enabled(dev_priv, rcomp_phy); + + /* + * We need to copy the GRC calibration value from rcomp_phy, + * so make sure it's powered up. + */ + if (!was_enabled) + _bxt_ddi_phy_init(dev_priv, rcomp_phy); + } + + _bxt_ddi_phy_init(dev_priv, phy); + + if (rcomp_phy != -1 && !was_enabled) + bxt_ddi_phy_uninit(dev_priv, phy_info->rcomp_phy); +} + static bool __printf(6, 7) __phy_reg_verify_state(struct drm_i915_private *dev_priv, enum dpio_phy phy, i915_reg_t reg, u32 mask, u32 expected, @@ -443,7 +481,7 @@ bool bxt_ddi_phy_verify_state(struct drm_i915_private *dev_priv, * at least on stepping A this bit is read-only and fixed at 0. */ - if (phy == DPIO_PHY0) { + if (phy_info->rcomp_phy != -1) { u32 grc_code = dev_priv->bxt_phy_grc; grc_code = grc_code << GRC_CODE_FAST_SHIFT | @@ -451,12 +489,12 @@ bool bxt_ddi_phy_verify_state(struct drm_i915_private *dev_priv, grc_code; mask = GRC_CODE_FAST_MASK | GRC_CODE_SLOW_MASK | GRC_CODE_NOM_MASK; - ok &= _CHK(BXT_PORT_REF_DW6(DPIO_PHY0), mask, grc_code, - "BXT_PORT_REF_DW6(%d)", DPIO_PHY0); + ok &= _CHK(BXT_PORT_REF_DW6(phy), mask, grc_code, + "BXT_PORT_REF_DW6(%d)", phy); mask = GRC_DIS | GRC_RDY_OVRD; - ok &= _CHK(BXT_PORT_REF_DW8(DPIO_PHY0), mask, mask, - "BXT_PORT_REF_DW8(%d)", DPIO_PHY0); + ok &= _CHK(BXT_PORT_REF_DW8(phy), mask, mask, + "BXT_PORT_REF_DW8(%d)", phy); } return ok; diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c index 5fd76ee0f4ca..95034a06d4ad 100644 --- a/drivers/gpu/drm/i915/intel_runtime_pm.c +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c @@ -848,22 +848,7 @@ static void skl_power_well_disable(struct drm_i915_private *dev_priv, static void bxt_dpio_cmn_power_well_enable(struct drm_i915_private *dev_priv, struct i915_power_well *power_well) { - enum skl_disp_power_wells power_well_id = power_well->id; - struct i915_power_well *cmn_a_well = NULL; - - if (power_well_id == BXT_DPIO_CMN_BC) { - /* - * We need to copy the GRC calibration value from the eDP PHY, - * so make sure it's powered up. - */ - cmn_a_well = lookup_power_well(dev_priv, BXT_DPIO_CMN_A); - intel_power_well_get(dev_priv, cmn_a_well); - } - bxt_ddi_phy_init(dev_priv, power_well->data); - - if (cmn_a_well) - intel_power_well_put(dev_priv, cmn_a_well); } static void bxt_dpio_cmn_power_well_disable(struct drm_i915_private *dev_priv,