diff options
| author | Mika Kahola <mika.kahola@intel.com> | 2021-05-18 17:06:21 -0700 |
|---|---|---|
| committer | Lucas De Marchi <lucas.demarchi@intel.com> | 2021-05-19 23:59:29 -0700 |
| commit | ca962882268ac8d99ffe461c25522c68b1fdc39d (patch) | |
| tree | 94ca0f65dcfa64eeb73b8fa5d5c1a817f4ad317b /drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c | |
| parent | 2d776579728b5d1b04882e1bc7c9b2d10b238003 (diff) | |
drm/i915/adl_p: Define and use ADL-P specific DP translation tables
Define and use DP voltage swing and pre-emphasis translation tables
for ADL-P.
v2:
- Update according to recent bspec updates; there are now separate
tables for RBR/HBR and HBR2/HBR3. (Anusha)
BSpec: 54956
Cc: Imre Deak <imre.deak@intel.com>
Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Signed-off-by: Clinton Taylor <Clinton.A.Taylor@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Clint Taylor <Clinton.A.Taylor@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210519000625.3184321-14-lucas.demarchi@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c | 53 |
1 files changed, 53 insertions, 0 deletions
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 7bcdd5c12028..ce5d5d13b7c1 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c +++ b/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c @@ -735,6 +735,34 @@ static const struct cnl_ddi_buf_trans rkl_combo_phy_ddi_translations_dp_hbr2_hbr { 0x6, 0x7F, 0x3F, 0x00, 0x00 }, /* 900 900 0.0 */ }; +static const struct tgl_dkl_phy_ddi_buf_trans adlp_dkl_phy_dp_ddi_trans_hbr[] = { + /* VS pre-emp Non-trans mV Pre-emph dB */ + { 0x7, 0x0, 0x01 }, /* 0 0 400mV 0 dB */ + { 0x5, 0x0, 0x06 }, /* 0 1 400mV 3.5 dB */ + { 0x2, 0x0, 0x0B }, /* 0 2 400mV 6 dB */ + { 0x0, 0x0, 0x17 }, /* 0 3 400mV 9.5 dB */ + { 0x5, 0x0, 0x00 }, /* 1 0 600mV 0 dB */ + { 0x2, 0x0, 0x08 }, /* 1 1 600mV 3.5 dB */ + { 0x0, 0x0, 0x14 }, /* 1 2 600mV 6 dB */ + { 0x2, 0x0, 0x00 }, /* 2 0 800mV 0 dB */ + { 0x0, 0x0, 0x0B }, /* 2 1 800mV 3.5 dB */ + { 0x0, 0x0, 0x00 }, /* 3 0 1200mV 0 dB */ +}; + +static const struct tgl_dkl_phy_ddi_buf_trans adlp_dkl_phy_dp_ddi_trans_hbr2_hbr3[] = { + /* VS pre-emp Non-trans mV Pre-emph dB */ + { 0x7, 0x0, 0x00 }, /* 0 0 400mV 0 dB */ + { 0x5, 0x0, 0x04 }, /* 0 1 400mV 3.5 dB */ + { 0x2, 0x0, 0x0A }, /* 0 2 400mV 6 dB */ + { 0x0, 0x0, 0x18 }, /* 0 3 400mV 9.5 dB */ + { 0x5, 0x0, 0x00 }, /* 1 0 600mV 0 dB */ + { 0x2, 0x0, 0x06 }, /* 1 1 600mV 3.5 dB */ + { 0x0, 0x0, 0x14 }, /* 1 2 600mV 6 dB */ + { 0x2, 0x0, 0x00 }, /* 2 0 800mV 0 dB */ + { 0x0, 0x0, 0x09 }, /* 2 1 800mV 3.5 dB */ + { 0x0, 0x0, 0x00 }, /* 3 0 1200mV 0 dB */ +}; + bool is_hobl_buf_trans(const struct cnl_ddi_buf_trans *table) { return table == tgl_combo_phy_ddi_translations_edp_hbr2_hobl; @@ -1348,6 +1376,31 @@ tgl_get_dkl_buf_trans(struct intel_encoder *encoder, return tgl_get_dkl_buf_trans_dp(encoder, crtc_state, n_entries); } +static const struct tgl_dkl_phy_ddi_buf_trans * +adlp_get_dkl_buf_trans_dp(struct intel_encoder *encoder, + const struct intel_crtc_state *crtc_state, + int *n_entries) +{ + if (crtc_state->port_clock > 270000) { + *n_entries = ARRAY_SIZE(adlp_dkl_phy_dp_ddi_trans_hbr2_hbr3); + return adlp_dkl_phy_dp_ddi_trans_hbr; + } + + *n_entries = ARRAY_SIZE(adlp_dkl_phy_dp_ddi_trans_hbr); + return adlp_dkl_phy_dp_ddi_trans_hbr; +} + +const struct tgl_dkl_phy_ddi_buf_trans * +adlp_get_dkl_buf_trans(struct intel_encoder *encoder, + const struct intel_crtc_state *crtc_state, + int *n_entries) +{ + if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) + return tgl_get_dkl_buf_trans_hdmi(encoder, crtc_state, n_entries); + else + return adlp_get_dkl_buf_trans_dp(encoder, crtc_state, n_entries); +} + int intel_ddi_hdmi_num_entries(struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state, int *default_entry) |