On Mon, 2020-07-20 at 10:09 -0700, José Roberto de Souza wrote:
> This new HBR2 table for TGL-U and TGL-Y is required to pass
> DisplayPort compliance.
>
> BSpec: 49291
> Cc: Khaled Almahallawy <khaled.almahallawy@xxxxxxxxx>
> Signed-off-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/display/intel_ddi.c | 19 +++++++++++++++++++
> 1 file changed, 19 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c
> b/drivers/gpu/drm/i915/display/intel_ddi.c
> index 714b2bc96f23..de5b216561d8 100644
> --- a/drivers/gpu/drm/i915/display/intel_ddi.c
> +++ b/drivers/gpu/drm/i915/display/intel_ddi.c
> @@ -706,6 +706,20 @@ static const struct cnl_ddi_buf_trans
> tgl_combo_phy_ddi_translations_dp_hbr2[] =
> { 0x6, 0x7F, 0x3F, 0x00, 0x00 }, /* 900 900 0.0 */
> };
>
> +static const struct cnl_ddi_buf_trans
> tgl_uy_combo_phy_ddi_translations_dp_hbr2[] = {
> + /* NT mV Trans mV
> db */
> + { 0xA, 0x35, 0x3F, 0x00, 0x00 }, /* 350 350 0.0 */
> + { 0xA, 0x4F, 0x36, 0x00, 0x09 }, /* 350 500 3.1 */
> + { 0xC, 0x60, 0x32, 0x00, 0x0D }, /* 350 700 6.0 */
> + { 0xC, 0x7F, 0x2D, 0x00, 0x12 }, /* 350 900 8.2 */
> + { 0xC, 0x47, 0x3F, 0x00, 0x00 }, /* 500 500 0.0 */
> + { 0xC, 0x6F, 0x36, 0x00, 0x09 }, /* 500 700 2.9 */
> + { 0x6, 0x7D, 0x32, 0x00, 0x0D }, /* 500 900 5.1 */
> + { 0x6, 0x60, 0x3C, 0x00, 0x03 }, /* 650 700 0.6 */
> + { 0x6, 0x7F, 0x34, 0x00, 0x0B }, /* 600 900 3.5 */
> + { 0x6, 0x7F, 0x3F, 0x00, 0x00 }, /* 900 900 0.0 */
> +};
> +
> /*
> * Cloned the HOBL entry to comply with the voltage and pre-emphasis
> entries
> * that DisplayPort specification requires
> @@ -1087,6 +1101,11 @@ tgl_get_combo_buf_trans(struct intel_encoder
> *encoder, int type, int rate,
> if (type == INTEL_OUTPUT_HDMI || type == INTEL_OUTPUT_EDP) {
> return icl_get_combo_buf_trans(encoder, type, rate,
> n_entries);
> } else if (rate > 270000) {
> + if (IS_TGL_U(dev_priv) || IS_TGL_Y(dev_priv)) {
> + *n_entries =
> ARRAY_SIZE(tgl_uy_combo_phy_ddi_translations_dp_hbr2);
> + return
> tgl_uy_combo_phy_ddi_translations_dp_hbr2;
> + }
> +
> *n_entries =
> ARRAY_SIZE(tgl_combo_phy_ddi_translations_dp_hbr2);
> return tgl_combo_phy_ddi_translations_dp_hbr2;
> }
Match bspecs
Reviewed-by: Khaled Almahallawy<khaled.almahallawy@xxxxxxxxx>
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