| Message ID | 1634732051-31282-2-git-send-email-quic_sbillaka@quicinc.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add support for eDP on SC7280 | expand |
Quoting Sankeerth Billakanti (2021-10-20 05:14:10) > diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c > index 62e75dc..9fea49c 100644 > --- a/drivers/gpu/drm/msm/dp/dp_ctrl.c > +++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c > @@ -1238,9 +1240,21 @@ static int dp_ctrl_link_train(struct dp_ctrl_private *ctrl, > link_info.capabilities = DP_LINK_CAP_ENHANCED_FRAMING; > > dp_aux_link_configure(ctrl->aux, &link_info); > + > + if (dpcd[DP_MAX_DOWNSPREAD] & DP_MAX_DOWNSPREAD_0_5) { Please add a static inline macro in include/drm/drm_dp_helper.h that makes this more readable. Something similar to drm_dp_is_branch() but with a human readable replacement for "is_branch". Maybe drm_dp_ssc()? > + ssc = DP_SPREAD_AMP_0_5; > + drm_dp_dpcd_write(ctrl->aux, DP_DOWNSPREAD_CTRL, &ssc, 1); > + } > + > drm_dp_dpcd_write(ctrl->aux, DP_MAIN_LINK_CHANNEL_CODING_SET, > &encoding, 1); > > + if (dpcd[DP_EDP_CONFIGURATION_CAP] & DP_ALTERNATE_SCRAMBLER_RESET_CAP) { And this one already has a helper, drm_dp_alternate_scrambler_reset_cap(). > + assr = DP_ALTERNATE_SCRAMBLER_RESET_ENABLE; > + drm_dp_dpcd_write(ctrl->aux, DP_EDP_CONFIGURATION_SET, > + &assr, 1); > + } > + > ret = dp_ctrl_link_train_1(ctrl, training_step); > if (ret) { > DRM_ERROR("link training #1 failed. ret=%d\n", ret); > @@ -1312,9 +1326,11 @@ static int dp_ctrl_enable_mainlink_clocks(struct dp_ctrl_private *ctrl) > struct dp_io *dp_io = &ctrl->parser->io; > struct phy *phy = dp_io->phy; > struct phy_configure_opts_dp *opts_dp = &dp_io->phy_opts.dp; > + const u8 *dpcd = ctrl->panel->dpcd; > > opts_dp->lanes = ctrl->link->link_params.num_lanes; > opts_dp->link_rate = ctrl->link->link_params.rate / 100; > + opts_dp->ssc = dpcd[DP_MAX_DOWNSPREAD] & DP_MAX_DOWNSPREAD_0_5; > dp_ctrl_set_clock_rate(ctrl, DP_CTRL_PM, "ctrl_link", > ctrl->link->link_params.rate * 1000); > > @@ -1406,7 +1422,7 @@ void dp_ctrl_host_deinit(struct dp_ctrl *dp_ctrl) > > static bool dp_ctrl_use_fixed_nvid(struct dp_ctrl_private *ctrl) > { > - u8 *dpcd = ctrl->panel->dpcd; > + const u8 *dpcd = ctrl->panel->dpcd; > > /* > * For better interop experience, used a fixed NVID=0x8000 > diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c > index c867745..c16311b 100644 > --- a/drivers/gpu/drm/msm/dp/dp_display.c > +++ b/drivers/gpu/drm/msm/dp/dp_display.c > @@ -144,8 +144,16 @@ static const struct msm_dp_config sc8180x_dp_cfg = { > .num_descs = 3, > }; > > +static const struct msm_dp_config sc7280_dp_cfg = { > + .descs = (struct msm_dp_desc[]) { const > + { .io_start = 0x0aea0000, .connector_type = DRM_MODE_CONNECTOR_eDP }, > + }, > + .num_descs = 1, > +}; > + > static const struct of_device_id dp_dt_match[] = { > { .compatible = "qcom,sc7180-dp", .data = &sc7180_dp_cfg }, > + { .compatible = "qcom,sc7280-edp", .data = &sc7280_dp_cfg }, > { .compatible = "qcom,sc8180x-dp", .data = &sc8180x_dp_cfg }, > { .compatible = "qcom,sc8180x-edp", .data = &sc8180x_dp_cfg }, > {} > @@ -1440,7 +1448,7 @@ void msm_dp_irq_postinstall(struct msm_dp *dp_display) > > dp_hpd_event_setup(dp); > > - dp_add_event(dp, EV_HPD_INIT_SETUP, 0, 100); > + dp_add_event(dp, EV_HPD_INIT_SETUP, 0, 1); This has no explanation. What is it?
Hi Stephen, On 2021-10-21 23:32, Stephen Boyd wrote: > Quoting Sankeerth Billakanti (2021-10-20 05:14:10) >> diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c >> b/drivers/gpu/drm/msm/dp/dp_ctrl.c >> index 62e75dc..9fea49c 100644 >> --- a/drivers/gpu/drm/msm/dp/dp_ctrl.c >> +++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c >> @@ -1238,9 +1240,21 @@ static int dp_ctrl_link_train(struct >> dp_ctrl_private *ctrl, >> link_info.capabilities = DP_LINK_CAP_ENHANCED_FRAMING; >> >> dp_aux_link_configure(ctrl->aux, &link_info); >> + >> + if (dpcd[DP_MAX_DOWNSPREAD] & DP_MAX_DOWNSPREAD_0_5) { > > Please add a static inline macro in include/drm/drm_dp_helper.h that > makes this more readable. Something similar to drm_dp_is_branch() but > with a human readable replacement for "is_branch". Maybe drm_dp_ssc()? > Okay, I will add a macro, drm_dp_max_downspread (to be consistent with the spec and other macros in the file) in drm_dp_helper.h file. >> + ssc = DP_SPREAD_AMP_0_5; >> + drm_dp_dpcd_write(ctrl->aux, DP_DOWNSPREAD_CTRL, &ssc, >> 1); >> + } >> + >> drm_dp_dpcd_write(ctrl->aux, DP_MAIN_LINK_CHANNEL_CODING_SET, >> &encoding, 1); >> >> + if (dpcd[DP_EDP_CONFIGURATION_CAP] & >> DP_ALTERNATE_SCRAMBLER_RESET_CAP) { > > And this one already has a helper, > drm_dp_alternate_scrambler_reset_cap(). > Okay, I will use that. >> + assr = DP_ALTERNATE_SCRAMBLER_RESET_ENABLE; >> + drm_dp_dpcd_write(ctrl->aux, DP_EDP_CONFIGURATION_SET, >> + &assr, 1); >> + } >> + >> ret = dp_ctrl_link_train_1(ctrl, training_step); >> if (ret) { >> DRM_ERROR("link training #1 failed. ret=%d\n", ret); >> @@ -1312,9 +1326,11 @@ static int >> dp_ctrl_enable_mainlink_clocks(struct dp_ctrl_private *ctrl) >> struct dp_io *dp_io = &ctrl->parser->io; >> struct phy *phy = dp_io->phy; >> struct phy_configure_opts_dp *opts_dp = &dp_io->phy_opts.dp; >> + const u8 *dpcd = ctrl->panel->dpcd; >> >> opts_dp->lanes = ctrl->link->link_params.num_lanes; >> opts_dp->link_rate = ctrl->link->link_params.rate / 100; >> + opts_dp->ssc = dpcd[DP_MAX_DOWNSPREAD] & >> DP_MAX_DOWNSPREAD_0_5; >> dp_ctrl_set_clock_rate(ctrl, DP_CTRL_PM, "ctrl_link", >> ctrl->link->link_params.rate * >> 1000); >> >> @@ -1406,7 +1422,7 @@ void dp_ctrl_host_deinit(struct dp_ctrl >> *dp_ctrl) >> >> static bool dp_ctrl_use_fixed_nvid(struct dp_ctrl_private *ctrl) >> { >> - u8 *dpcd = ctrl->panel->dpcd; >> + const u8 *dpcd = ctrl->panel->dpcd; >> >> /* >> * For better interop experience, used a fixed NVID=0x8000 >> diff --git a/drivers/gpu/drm/msm/dp/dp_display.c >> b/drivers/gpu/drm/msm/dp/dp_display.c >> index c867745..c16311b 100644 >> --- a/drivers/gpu/drm/msm/dp/dp_display.c >> +++ b/drivers/gpu/drm/msm/dp/dp_display.c >> @@ -144,8 +144,16 @@ static const struct msm_dp_config sc8180x_dp_cfg >> = { >> .num_descs = 3, >> }; >> >> +static const struct msm_dp_config sc7280_dp_cfg = { >> + .descs = (struct msm_dp_desc[]) { > > const > Will add it. >> + { .io_start = 0x0aea0000, .connector_type = >> DRM_MODE_CONNECTOR_eDP }, >> + }, >> + .num_descs = 1, >> +}; >> + >> static const struct of_device_id dp_dt_match[] = { >> { .compatible = "qcom,sc7180-dp", .data = &sc7180_dp_cfg }, >> + { .compatible = "qcom,sc7280-edp", .data = &sc7280_dp_cfg }, >> { .compatible = "qcom,sc8180x-dp", .data = &sc8180x_dp_cfg }, >> { .compatible = "qcom,sc8180x-edp", .data = &sc8180x_dp_cfg }, >> {} >> @@ -1440,7 +1448,7 @@ void msm_dp_irq_postinstall(struct msm_dp >> *dp_display) >> >> dp_hpd_event_setup(dp); >> >> - dp_add_event(dp, EV_HPD_INIT_SETUP, 0, 100); >> + dp_add_event(dp, EV_HPD_INIT_SETUP, 0, 1); > > This has no explanation. What is it? Will add explanation for it as a comment.
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c index ce6f32a..516cc19 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c @@ -856,9 +856,9 @@ static const struct dpu_intf_cfg sm8150_intf[] = { }; static const struct dpu_intf_cfg sc7280_intf[] = { - INTF_BLK("intf_0", INTF_0, 0x34000, INTF_DP, 0, 24, INTF_SC7280_MASK, MDP_SSPP_TOP0_INTR, 24, 25), + INTF_BLK("intf_0", INTF_0, 0x34000, INTF_DP, 1, 24, INTF_SC7280_MASK, MDP_SSPP_TOP0_INTR, 24, 25), INTF_BLK("intf_1", INTF_1, 0x35000, INTF_DSI, 0, 24, INTF_SC7280_MASK, MDP_SSPP_TOP0_INTR, 26, 27), - INTF_BLK("intf_5", INTF_5, 0x39000, INTF_EDP, 0, 24, INTF_SC7280_MASK, MDP_SSPP_TOP0_INTR, 22, 23), + INTF_BLK("intf_5", INTF_5, 0x39000, INTF_DP, 0, 24, INTF_SC7280_MASK, MDP_SSPP_TOP0_INTR, 22, 23), }; /************************************************************* diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c index 62e75dc..9fea49c 100644 --- a/drivers/gpu/drm/msm/dp/dp_ctrl.c +++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c @@ -119,7 +119,7 @@ void dp_ctrl_push_idle(struct dp_ctrl *dp_ctrl) static void dp_ctrl_config_ctrl(struct dp_ctrl_private *ctrl) { u32 config = 0, tbd; - u8 *dpcd = ctrl->panel->dpcd; + const u8 *dpcd = ctrl->panel->dpcd; /* Default-> LSCLK DIV: 1/4 LCLK */ config |= (2 << DP_CONFIGURATION_CTRL_LSCLK_DIV_SHIFT); @@ -1228,7 +1228,9 @@ static int dp_ctrl_link_train(struct dp_ctrl_private *ctrl, int *training_step) { int ret = 0; + const u8 *dpcd = ctrl->panel->dpcd; u8 encoding = DP_SET_ANSI_8B10B; + u8 ssc, assr; struct dp_link_info link_info = {0}; dp_ctrl_config_ctrl(ctrl); @@ -1238,9 +1240,21 @@ static int dp_ctrl_link_train(struct dp_ctrl_private *ctrl, link_info.capabilities = DP_LINK_CAP_ENHANCED_FRAMING; dp_aux_link_configure(ctrl->aux, &link_info); + + if (dpcd[DP_MAX_DOWNSPREAD] & DP_MAX_DOWNSPREAD_0_5) { + ssc = DP_SPREAD_AMP_0_5; + drm_dp_dpcd_write(ctrl->aux, DP_DOWNSPREAD_CTRL, &ssc, 1); + } + drm_dp_dpcd_write(ctrl->aux, DP_MAIN_LINK_CHANNEL_CODING_SET, &encoding, 1); + if (dpcd[DP_EDP_CONFIGURATION_CAP] & DP_ALTERNATE_SCRAMBLER_RESET_CAP) { + assr = DP_ALTERNATE_SCRAMBLER_RESET_ENABLE; + drm_dp_dpcd_write(ctrl->aux, DP_EDP_CONFIGURATION_SET, + &assr, 1); + } + ret = dp_ctrl_link_train_1(ctrl, training_step); if (ret) { DRM_ERROR("link training #1 failed. ret=%d\n", ret); @@ -1312,9 +1326,11 @@ static int dp_ctrl_enable_mainlink_clocks(struct dp_ctrl_private *ctrl) struct dp_io *dp_io = &ctrl->parser->io; struct phy *phy = dp_io->phy; struct phy_configure_opts_dp *opts_dp = &dp_io->phy_opts.dp; + const u8 *dpcd = ctrl->panel->dpcd; opts_dp->lanes = ctrl->link->link_params.num_lanes; opts_dp->link_rate = ctrl->link->link_params.rate / 100; + opts_dp->ssc = dpcd[DP_MAX_DOWNSPREAD] & DP_MAX_DOWNSPREAD_0_5; dp_ctrl_set_clock_rate(ctrl, DP_CTRL_PM, "ctrl_link", ctrl->link->link_params.rate * 1000); @@ -1406,7 +1422,7 @@ void dp_ctrl_host_deinit(struct dp_ctrl *dp_ctrl) static bool dp_ctrl_use_fixed_nvid(struct dp_ctrl_private *ctrl) { - u8 *dpcd = ctrl->panel->dpcd; + const u8 *dpcd = ctrl->panel->dpcd; /* * For better interop experience, used a fixed NVID=0x8000 diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c index c867745..c16311b 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -144,8 +144,16 @@ static const struct msm_dp_config sc8180x_dp_cfg = { .num_descs = 3, }; +static const struct msm_dp_config sc7280_dp_cfg = { + .descs = (struct msm_dp_desc[]) { + { .io_start = 0x0aea0000, .connector_type = DRM_MODE_CONNECTOR_eDP }, + }, + .num_descs = 1, +}; + static const struct of_device_id dp_dt_match[] = { { .compatible = "qcom,sc7180-dp", .data = &sc7180_dp_cfg }, + { .compatible = "qcom,sc7280-edp", .data = &sc7280_dp_cfg }, { .compatible = "qcom,sc8180x-dp", .data = &sc8180x_dp_cfg }, { .compatible = "qcom,sc8180x-edp", .data = &sc8180x_dp_cfg }, {} @@ -1440,7 +1448,7 @@ void msm_dp_irq_postinstall(struct msm_dp *dp_display) dp_hpd_event_setup(dp); - dp_add_event(dp, EV_HPD_INIT_SETUP, 0, 100); + dp_add_event(dp, EV_HPD_INIT_SETUP, 0, 1); } void msm_dp_debugfs_init(struct msm_dp *dp_display, struct drm_minor *minor)