From 043eaf3685c8edccf5400a0260027b864b931797 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Mon, 16 Oct 2017 17:57:02 +0300 Subject: [PATCH] drm/i915: Kill off the BXT buf_trans default_index MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit default_index contained in the BXT buf_trans tables is actually useless. For DP we should always have a valid level selected (otherwise the link training logic would be buggy), and for HDMI we can just do what the other platforms do and pick the correct entry in intel_ddi_hdmi_level(). Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20171016145705.11780-8-ville.syrjala@linux.intel.com Reviewed-by: James Ausmus --- drivers/gpu/drm/i915/intel_ddi.c | 80 +++++++++++++++++----------------------- 1 file changed, 34 insertions(+), 46 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index 3607837..96ceb7a 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -305,35 +305,34 @@ struct bxt_ddi_buf_trans { u8 scale; /* scale value */ u8 enable; /* scale enable */ u8 deemphasis; - bool default_index; /* true if the entry represents default value */ }; static const struct bxt_ddi_buf_trans bxt_ddi_translations_dp[] = { /* Idx NT mV diff db */ - { 52, 0x9A, 0, 128, true }, /* 0: 400 0 */ - { 78, 0x9A, 0, 85, false }, /* 1: 400 3.5 */ - { 104, 0x9A, 0, 64, false }, /* 2: 400 6 */ - { 154, 0x9A, 0, 43, false }, /* 3: 400 9.5 */ - { 77, 0x9A, 0, 128, false }, /* 4: 600 0 */ - { 116, 0x9A, 0, 85, false }, /* 5: 600 3.5 */ - { 154, 0x9A, 0, 64, false }, /* 6: 600 6 */ - { 102, 0x9A, 0, 128, false }, /* 7: 800 0 */ - { 154, 0x9A, 0, 85, false }, /* 8: 800 3.5 */ - { 154, 0x9A, 1, 128, false }, /* 9: 1200 0 */ + { 52, 0x9A, 0, 128, }, /* 0: 400 0 */ + { 78, 0x9A, 0, 85, }, /* 1: 400 3.5 */ + { 104, 0x9A, 0, 64, }, /* 2: 400 6 */ + { 154, 0x9A, 0, 43, }, /* 3: 400 9.5 */ + { 77, 0x9A, 0, 128, }, /* 4: 600 0 */ + { 116, 0x9A, 0, 85, }, /* 5: 600 3.5 */ + { 154, 0x9A, 0, 64, }, /* 6: 600 6 */ + { 102, 0x9A, 0, 128, }, /* 7: 800 0 */ + { 154, 0x9A, 0, 85, }, /* 8: 800 3.5 */ + { 154, 0x9A, 1, 128, }, /* 9: 1200 0 */ }; static const struct bxt_ddi_buf_trans bxt_ddi_translations_edp[] = { /* Idx NT mV diff db */ - { 26, 0, 0, 128, false }, /* 0: 200 0 */ - { 38, 0, 0, 112, false }, /* 1: 200 1.5 */ - { 48, 0, 0, 96, false }, /* 2: 200 4 */ - { 54, 0, 0, 69, false }, /* 3: 200 6 */ - { 32, 0, 0, 128, false }, /* 4: 250 0 */ - { 48, 0, 0, 104, false }, /* 5: 250 1.5 */ - { 54, 0, 0, 85, false }, /* 6: 250 4 */ - { 43, 0, 0, 128, false }, /* 7: 300 0 */ - { 54, 0, 0, 101, false }, /* 8: 300 1.5 */ - { 48, 0, 0, 128, false }, /* 9: 300 0 */ + { 26, 0, 0, 128, }, /* 0: 200 0 */ + { 38, 0, 0, 112, }, /* 1: 200 1.5 */ + { 48, 0, 0, 96, }, /* 2: 200 4 */ + { 54, 0, 0, 69, }, /* 3: 200 6 */ + { 32, 0, 0, 128, }, /* 4: 250 0 */ + { 48, 0, 0, 104, }, /* 5: 250 1.5 */ + { 54, 0, 0, 85, }, /* 6: 250 4 */ + { 43, 0, 0, 128, }, /* 7: 300 0 */ + { 54, 0, 0, 101, }, /* 8: 300 1.5 */ + { 48, 0, 0, 128, }, /* 9: 300 0 */ }; /* BSpec has 2 recommended values - entries 0 and 8. @@ -341,16 +340,16 @@ static const struct bxt_ddi_buf_trans bxt_ddi_translations_edp[] = { */ static const struct bxt_ddi_buf_trans bxt_ddi_translations_hdmi[] = { /* Idx NT mV diff db */ - { 52, 0x9A, 0, 128, false }, /* 0: 400 0 */ - { 52, 0x9A, 0, 85, false }, /* 1: 400 3.5 */ - { 52, 0x9A, 0, 64, false }, /* 2: 400 6 */ - { 42, 0x9A, 0, 43, false }, /* 3: 400 9.5 */ - { 77, 0x9A, 0, 128, false }, /* 4: 600 0 */ - { 77, 0x9A, 0, 85, false }, /* 5: 600 3.5 */ - { 77, 0x9A, 0, 64, false }, /* 6: 600 6 */ - { 102, 0x9A, 0, 128, false }, /* 7: 800 0 */ - { 102, 0x9A, 0, 85, false }, /* 8: 800 3.5 */ - { 154, 0x9A, 1, 128, true }, /* 9: 1200 0 */ + { 52, 0x9A, 0, 128, }, /* 0: 400 0 */ + { 52, 0x9A, 0, 85, }, /* 1: 400 3.5 */ + { 52, 0x9A, 0, 64, }, /* 2: 400 6 */ + { 42, 0x9A, 0, 43, }, /* 3: 400 9.5 */ + { 77, 0x9A, 0, 128, }, /* 4: 600 0 */ + { 77, 0x9A, 0, 85, }, /* 5: 600 3.5 */ + { 77, 0x9A, 0, 64, }, /* 6: 600 6 */ + { 102, 0x9A, 0, 128, }, /* 7: 800 0 */ + { 102, 0x9A, 0, 85, }, /* 8: 800 3.5 */ + { 154, 0x9A, 1, 128, }, /* 9: 1200 0 */ }; struct cnl_ddi_buf_trans { @@ -759,12 +758,12 @@ static int intel_ddi_hdmi_level(struct drm_i915_private *dev_priv, enum port por hdmi_level = dev_priv->vbt.ddi_port_info[port].hdmi_level_shift; - if (IS_GEN9_LP(dev_priv)) - return hdmi_level; - if (IS_CANNONLAKE(dev_priv)) { cnl_get_buf_trans_hdmi(dev_priv, &n_hdmi_entries); hdmi_default_entry = n_hdmi_entries - 1; + } else if (IS_GEN9_LP(dev_priv)) { + bxt_get_buf_trans_hdmi(dev_priv, &n_hdmi_entries); + hdmi_default_entry = n_hdmi_entries - 1; } else if (IS_GEN9_BC(dev_priv)) { intel_ddi_get_buf_trans_hdmi(dev_priv, &n_hdmi_entries); hdmi_default_entry = 8; @@ -1862,7 +1861,7 @@ static void bxt_ddi_vswing_sequence(struct intel_encoder *encoder, struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); const struct bxt_ddi_buf_trans *ddi_translations; enum port port = encoder->port; - int n_entries, i; + int n_entries; if (type == INTEL_OUTPUT_HDMI) ddi_translations = bxt_get_buf_trans_hdmi(dev_priv, &n_entries); @@ -1871,17 +1870,6 @@ static void bxt_ddi_vswing_sequence(struct intel_encoder *encoder, else ddi_translations = bxt_get_buf_trans_dp(dev_priv, &n_entries); - /* Check if default value has to be used */ - if (level >= n_entries || - (type == INTEL_OUTPUT_HDMI && level == HDMI_LEVEL_SHIFT_UNKNOWN)) { - for (i = 0; i < n_entries; i++) { - if (ddi_translations[i].default_index) { - level = i; - break; - } - } - } - bxt_ddi_phy_set_signal_level(dev_priv, port, ddi_translations[level].margin, ddi_translations[level].scale, -- 2.7.4