From 3b4da8315addfe4661f3c25ea8a83097d965c67a Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Fri, 13 Aug 2021 14:51:50 +0300 Subject: [PATCH] drm/i915/dg2: use existing mechanisms for SNPS PHY translations We use encoder->get_buf_trans() in many places, for example intel_ddi_dp_voltage_max(), and the hook was set to some old platform's function for DG2 SNPS PHY. Convert SNPS PHY to use the same translation mechanisms as everything else. Cc: Manasi Navare Cc: Matt Roper Reviewed-by: Matt Roper Signed-off-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20210813115151.19290-2-jani.nikula@intel.com --- drivers/gpu/drm/i915/display/intel_ddi.c | 6 +- .../drm/i915/display/intel_ddi_buf_trans.c | 31 +++++++++- .../drm/i915/display/intel_ddi_buf_trans.h | 7 +++ drivers/gpu/drm/i915/display/intel_snps_phy.c | 61 ++++++------------- drivers/gpu/drm/i915/display/intel_snps_phy.h | 3 +- 5 files changed, 59 insertions(+), 49 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index 74b44be5a321..1ef7a65feb66 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -1388,7 +1388,7 @@ dg2_set_signal_levels(struct intel_dp *intel_dp, struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base; int level = intel_ddi_dp_level(intel_dp, crtc_state); - intel_snps_phy_ddi_vswing_sequence(encoder, level); + intel_snps_phy_ddi_vswing_sequence(encoder, crtc_state, level); } static void @@ -2392,7 +2392,7 @@ static void dg2_ddi_pre_enable_dp(struct intel_atomic_state *state, */ /* 5.e Configure voltage swing and related IO settings */ - intel_snps_phy_ddi_vswing_sequence(encoder, level); + intel_snps_phy_ddi_vswing_sequence(encoder, crtc_state, level); /* * 5.f Configure and enable DDI_BUF_CTL @@ -3061,7 +3061,7 @@ static void intel_enable_ddi_hdmi(struct intel_atomic_state *state, connector->base.id, connector->name); if (IS_DG2(dev_priv)) - intel_snps_phy_ddi_vswing_sequence(encoder, U32_MAX); + intel_snps_phy_ddi_vswing_sequence(encoder, crtc_state, level); else if (DISPLAY_VER(dev_priv) >= 12) tgl_ddi_vswing_sequence(encoder, crtc_state, level); else if (DISPLAY_VER(dev_priv) == 11) diff --git a/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c b/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c index ba2c08f1a797..ebb39624bfc9 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c +++ b/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c @@ -983,6 +983,25 @@ static const struct intel_ddi_buf_trans adlp_dkl_phy_ddi_translations_dp_hbr2_hb .num_entries = ARRAY_SIZE(_adlp_dkl_phy_ddi_translations_dp_hbr2_hbr3), }; +static const union intel_ddi_buf_trans_entry _dg2_snps_translations[] = { + { .snps = { 26, 0, 0 } }, /* VS 0, pre-emph 0 */ + { .snps = { 33, 0, 6 } }, /* VS 0, pre-emph 1 */ + { .snps = { 38, 0, 12 } }, /* VS 0, pre-emph 2 */ + { .snps = { 43, 0, 19 } }, /* VS 0, pre-emph 3 */ + { .snps = { 39, 0, 0 } }, /* VS 1, pre-emph 0 */ + { .snps = { 44, 0, 8 } }, /* VS 1, pre-emph 1 */ + { .snps = { 47, 0, 15 } }, /* VS 1, pre-emph 2 */ + { .snps = { 52, 0, 0 } }, /* VS 2, pre-emph 0 */ + { .snps = { 51, 0, 10 } }, /* VS 2, pre-emph 1 */ + { .snps = { 62, 0, 0 } }, /* VS 3, pre-emph 0 */ +}; + +static const struct intel_ddi_buf_trans dg2_snps_translations = { + .entries = _dg2_snps_translations, + .num_entries = ARRAY_SIZE(_dg2_snps_translations), + .hdmi_default_entry = ARRAY_SIZE(_dg2_snps_translations) - 1, +}; + bool is_hobl_buf_trans(const struct intel_ddi_buf_trans *table) { return table == &tgl_combo_phy_ddi_translations_edp_hbr2_hobl; @@ -1563,6 +1582,14 @@ adlp_get_dkl_buf_trans(struct intel_encoder *encoder, return adlp_get_dkl_buf_trans_dp(encoder, crtc_state, n_entries); } +static const struct intel_ddi_buf_trans * +dg2_get_snps_buf_trans(struct intel_encoder *encoder, + const struct intel_crtc_state *crtc_state, + int *n_entries) +{ + return intel_get_buf_trans(&dg2_snps_translations, n_entries); +} + int intel_ddi_hdmi_num_entries(struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state, int *default_entry) @@ -1588,7 +1615,9 @@ void intel_ddi_buf_trans_init(struct intel_encoder *encoder) struct drm_i915_private *i915 = to_i915(encoder->base.dev); enum phy phy = intel_port_to_phy(i915, encoder->port); - if (IS_ALDERLAKE_P(i915)) { + if (IS_DG2(i915)) { + encoder->get_buf_trans = dg2_get_snps_buf_trans; + } else if (IS_ALDERLAKE_P(i915)) { if (intel_phy_is_combo(i915, phy)) encoder->get_buf_trans = adlp_get_combo_buf_trans; else diff --git a/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.h b/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.h index 2acd720f9d4f..94d338287f61 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.h +++ b/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.h @@ -45,12 +45,19 @@ struct tgl_dkl_phy_ddi_buf_trans { u32 dkl_de_emphasis_control; }; +struct dg2_snps_phy_buf_trans { + u8 snps_vswing; + u8 snps_pre_cursor; + u8 snps_post_cursor; +}; + union intel_ddi_buf_trans_entry { struct hsw_ddi_buf_trans hsw; struct bxt_ddi_buf_trans bxt; struct icl_ddi_buf_trans icl; struct icl_mg_phy_ddi_buf_trans mg; struct tgl_dkl_phy_ddi_buf_trans dkl; + struct dg2_snps_phy_buf_trans snps; }; struct intel_ddi_buf_trans { diff --git a/drivers/gpu/drm/i915/display/intel_snps_phy.c b/drivers/gpu/drm/i915/display/intel_snps_phy.c index 18b52b64af95..d81f71296297 100644 --- a/drivers/gpu/drm/i915/display/intel_snps_phy.c +++ b/drivers/gpu/drm/i915/display/intel_snps_phy.c @@ -5,6 +5,7 @@ #include +#include "intel_ddi_buf_trans.h" #include "intel_de.h" #include "intel_display_types.h" #include "intel_snps_phy.h" @@ -50,58 +51,30 @@ void intel_snps_phy_update_psr_power_state(struct drm_i915_private *dev_priv, SNPS_PHY_TX_REQ_LN_DIS_PWR_STATE_PSR, val); } -static const u32 dg2_ddi_translations[] = { - /* VS 0, pre-emph 0 */ - REG_FIELD_PREP(SNPS_PHY_TX_EQ_MAIN, 26), - - /* VS 0, pre-emph 1 */ - REG_FIELD_PREP(SNPS_PHY_TX_EQ_MAIN, 33) | - REG_FIELD_PREP(SNPS_PHY_TX_EQ_POST, 6), - - /* VS 0, pre-emph 2 */ - REG_FIELD_PREP(SNPS_PHY_TX_EQ_MAIN, 38) | - REG_FIELD_PREP(SNPS_PHY_TX_EQ_POST, 12), - - /* VS 0, pre-emph 3 */ - REG_FIELD_PREP(SNPS_PHY_TX_EQ_MAIN, 43) | - REG_FIELD_PREP(SNPS_PHY_TX_EQ_POST, 19), - - /* VS 1, pre-emph 0 */ - REG_FIELD_PREP(SNPS_PHY_TX_EQ_MAIN, 39), - - /* VS 1, pre-emph 1 */ - REG_FIELD_PREP(SNPS_PHY_TX_EQ_MAIN, 44) | - REG_FIELD_PREP(SNPS_PHY_TX_EQ_POST, 8), - - /* VS 1, pre-emph 2 */ - REG_FIELD_PREP(SNPS_PHY_TX_EQ_MAIN, 47) | - REG_FIELD_PREP(SNPS_PHY_TX_EQ_POST, 15), - - /* VS 2, pre-emph 0 */ - REG_FIELD_PREP(SNPS_PHY_TX_EQ_MAIN, 52), - - /* VS 2, pre-emph 1 */ - REG_FIELD_PREP(SNPS_PHY_TX_EQ_MAIN, 51) | - REG_FIELD_PREP(SNPS_PHY_TX_EQ_POST, 10), - - /* VS 3, pre-emph 0 */ - REG_FIELD_PREP(SNPS_PHY_TX_EQ_MAIN, 62), -}; - void intel_snps_phy_ddi_vswing_sequence(struct intel_encoder *encoder, - u32 level) + const struct intel_crtc_state *crtc_state, + int level) { struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); + const struct intel_ddi_buf_trans *ddi_translations; enum phy phy = intel_port_to_phy(dev_priv, encoder->port); int n_entries, ln; - n_entries = ARRAY_SIZE(dg2_ddi_translations); - if (level >= n_entries) + ddi_translations = encoder->get_buf_trans(encoder, crtc_state, &n_entries); + if (drm_WARN_ON_ONCE(&dev_priv->drm, !ddi_translations)) + return; + if (drm_WARN_ON_ONCE(&dev_priv->drm, level < 0 || level >= n_entries)) level = n_entries - 1; - for (ln = 0; ln < 4; ln++) - intel_de_write(dev_priv, SNPS_PHY_TX_EQ(ln, phy), - dg2_ddi_translations[level]); + for (ln = 0; ln < 4; ln++) { + u32 val = 0; + + val |= REG_FIELD_PREP(SNPS_PHY_TX_EQ_MAIN, ddi_translations->entries[level].snps.snps_vswing); + val |= REG_FIELD_PREP(SNPS_PHY_TX_EQ_PRE, ddi_translations->entries[level].snps.snps_pre_cursor); + val |= REG_FIELD_PREP(SNPS_PHY_TX_EQ_POST, ddi_translations->entries[level].snps.snps_post_cursor); + + intel_de_write(dev_priv, SNPS_PHY_TX_EQ(ln, phy), val); + } } /* diff --git a/drivers/gpu/drm/i915/display/intel_snps_phy.h b/drivers/gpu/drm/i915/display/intel_snps_phy.h index 6261ff88ef5c..a68547a6fee5 100644 --- a/drivers/gpu/drm/i915/display/intel_snps_phy.h +++ b/drivers/gpu/drm/i915/display/intel_snps_phy.h @@ -30,6 +30,7 @@ int intel_mpllb_calc_port_clock(struct intel_encoder *encoder, int intel_snps_phy_check_hdmi_link_rate(int clock); void intel_snps_phy_ddi_vswing_sequence(struct intel_encoder *encoder, - u32 level); + const struct intel_crtc_state *crtc_state, + int level); #endif /* __INTEL_SNPS_PHY_H__ */