| Message ID | 1645049106-30481-5-git-send-email-quic_khsieh@quicinc.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/msm/dp: enable widebus feature base on chip hardware revision | expand |
On 17/02/2022 01:05, Kuogee Hsieh wrote: > Widebus feature will transmit two pixel data per pixel clock to interface. > This feature now is required to be enabled to easy migrant to higher > resolution applications in future. However since some legacy chipsets > does not support this feature, this feature is enabled base on chip's > hardware revision. > > changes in v2: > -- remove compression related code from timing > -- remove op_info from struct msm_drm_private > -- remove unnecessary wide_bus_en variables > -- pass wide_bus_en into timing configuration by struct msm_dp > > Changes in v3: > -- split patch into 3 patches > -- enable widebus feature base on chip hardware revision > > Changes in v5: > -- DP_INTF_CONFIG_DATABUS_WIDEN > > Changes in v6: > -- fix Reported-bya issue > -- fix static inline bool msm_dp_wide_bus_enable() at msm_drv.h > > Changes in v7: > -- add Tested-by > > Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com> > Reported-by: kernel test robot <lkp@intel.com> > Tested-by: Bjorn Andersson <bjorn.andersson@linaro.org> > --- > drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 4 +++- > drivers/gpu/drm/msm/dp/dp_catalog.c | 34 +++++++++++++++++++++++++++-- > drivers/gpu/drm/msm/dp/dp_catalog.h | 3 ++- > drivers/gpu/drm/msm/dp/dp_ctrl.c | 13 +++++++---- > drivers/gpu/drm/msm/dp/dp_ctrl.h | 1 + > drivers/gpu/drm/msm/dp/dp_display.c | 32 +++++++++++++++++++++++++++ > drivers/gpu/drm/msm/dp/dp_display.h | 2 ++ > drivers/gpu/drm/msm/dp/dp_panel.c | 4 ++-- > drivers/gpu/drm/msm/dp/dp_panel.h | 2 +- > drivers/gpu/drm/msm/msm_drv.h | 6 +++++ > 10 files changed, 90 insertions(+), 11 deletions(-) > > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c > index 2b2dbb7..1e96cede 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c > @@ -2138,8 +2138,10 @@ int dpu_encoder_setup(struct drm_device *dev, struct drm_encoder *enc, > timer_setup(&dpu_enc->vsync_event_timer, > dpu_encoder_vsync_event_handler, > 0); > - else if (disp_info->intf_type == DRM_MODE_ENCODER_TMDS) > + else if (disp_info->intf_type == DRM_MODE_ENCODER_TMDS) { > dpu_enc->dp = priv->dp[disp_info->h_tile_instance[0]]; > + dpu_enc->wide_bus_en = msm_dp_wide_bus_enable(dpu_enc->dp); > + } > > INIT_DELAYED_WORK(&dpu_enc->delayed_off_work, > dpu_encoder_off_work); > diff --git a/drivers/gpu/drm/msm/dp/dp_catalog.c b/drivers/gpu/drm/msm/dp/dp_catalog.c > index 6ae9b29..524eccc 100644 > --- a/drivers/gpu/drm/msm/dp/dp_catalog.c > +++ b/drivers/gpu/drm/msm/dp/dp_catalog.c > @@ -24,6 +24,8 @@ > #define DP_INTERRUPT_STATUS_ACK_SHIFT 1 > #define DP_INTERRUPT_STATUS_MASK_SHIFT 2 > > +#define DP_INTF_CONFIG_DATABUS_WIDEN BIT(4) > + > #define DP_INTERRUPT_STATUS1 \ > (DP_INTR_AUX_I2C_DONE| \ > DP_INTR_WRONG_ADDR | DP_INTR_TIMEOUT | \ > @@ -483,6 +485,22 @@ int dp_catalog_ctrl_set_pattern(struct dp_catalog *dp_catalog, > } > > /** > + * dp_catalog_hw_revision() - retrieve DP hw revision > + * > + * @dp_catalog: DP catalog structure > + * > + * Return: DP controller hw revision > + * > + */ > +u32 dp_catalog_hw_revision(struct dp_catalog *dp_catalog) > +{ > + struct dp_catalog_private *catalog = container_of(dp_catalog, > + struct dp_catalog_private, dp_catalog); > + > + return dp_read_ahb(catalog, REG_DP_HW_VERSION); > +} > + > +/** > * dp_catalog_ctrl_reset() - reset DP controller > * > * @dp_catalog: DP catalog structure > @@ -739,10 +757,11 @@ u32 dp_catalog_ctrl_read_phy_pattern(struct dp_catalog *dp_catalog) > } > > /* panel related catalog functions */ > -int dp_catalog_panel_timing_cfg(struct dp_catalog *dp_catalog) > +int dp_catalog_panel_timing_cfg(struct dp_catalog *dp_catalog, bool wide_bus_en) > { > struct dp_catalog_private *catalog = container_of(dp_catalog, > struct dp_catalog_private, dp_catalog); > + u32 reg; > > dp_write_link(catalog, REG_DP_TOTAL_HOR_VER, > dp_catalog->total); > @@ -751,7 +770,18 @@ int dp_catalog_panel_timing_cfg(struct dp_catalog *dp_catalog) > dp_write_link(catalog, REG_DP_HSYNC_VSYNC_WIDTH_POLARITY, > dp_catalog->width_blanking); > dp_write_link(catalog, REG_DP_ACTIVE_HOR_VER, dp_catalog->dp_active); > - dp_write_p0(catalog, MMSS_DP_INTF_CONFIG, 0); > + > + reg = dp_read_p0(catalog, MMSS_DP_INTF_CONFIG); > + > + if (wide_bus_en) > + reg |= DP_INTF_CONFIG_DATABUS_WIDEN; > + else > + reg &= ~DP_INTF_CONFIG_DATABUS_WIDEN; > + > + > + DRM_DEBUG_DP("wide_bus_en=%d reg=%x\n", wide_bus_en, reg); > + > + dp_write_p0(catalog, MMSS_DP_INTF_CONFIG, reg); > return 0; > } > > diff --git a/drivers/gpu/drm/msm/dp/dp_catalog.h b/drivers/gpu/drm/msm/dp/dp_catalog.h > index 6965afa..2ba1ea4 100644 > --- a/drivers/gpu/drm/msm/dp/dp_catalog.h > +++ b/drivers/gpu/drm/msm/dp/dp_catalog.h > @@ -95,6 +95,7 @@ void dp_catalog_ctrl_config_misc(struct dp_catalog *dp_catalog, u32 cc, u32 tb); > void dp_catalog_ctrl_config_msa(struct dp_catalog *dp_catalog, u32 rate, > u32 stream_rate_khz, bool fixed_nvid); > int dp_catalog_ctrl_set_pattern(struct dp_catalog *dp_catalog, u32 pattern); > +u32 dp_catalog_hw_revision(struct dp_catalog *dp_catalog); > void dp_catalog_ctrl_reset(struct dp_catalog *dp_catalog); > bool dp_catalog_ctrl_mainlink_ready(struct dp_catalog *dp_catalog); > void dp_catalog_ctrl_enable_irq(struct dp_catalog *dp_catalog, bool enable); > @@ -115,7 +116,7 @@ void dp_catalog_ctrl_send_phy_pattern(struct dp_catalog *dp_catalog, > u32 dp_catalog_ctrl_read_phy_pattern(struct dp_catalog *dp_catalog); > > /* DP Panel APIs */ > -int dp_catalog_panel_timing_cfg(struct dp_catalog *dp_catalog); > +int dp_catalog_panel_timing_cfg(struct dp_catalog *dp_catalog, bool wide_bus_en); > void dp_catalog_dump_regs(struct dp_catalog *dp_catalog); > void dp_catalog_panel_tpg_enable(struct dp_catalog *dp_catalog, > struct drm_display_mode *drm_mode); > diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c > index c724cb0..b07574c 100644 > --- a/drivers/gpu/drm/msm/dp/dp_ctrl.c > +++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c > @@ -154,7 +154,7 @@ static void dp_ctrl_config_ctrl(struct dp_ctrl_private *ctrl) > dp_catalog_ctrl_config_ctrl(ctrl->catalog, config); > } > > -static void dp_ctrl_configure_source_params(struct dp_ctrl_private *ctrl) > +static void dp_ctrl_configure_source_params(struct dp_ctrl_private *ctrl, bool wide_bus_en) > { > u32 cc, tb; > > @@ -167,7 +167,7 @@ static void dp_ctrl_configure_source_params(struct dp_ctrl_private *ctrl) > ctrl->panel->dp_mode.bpp); > cc = dp_link_get_colorimetry_config(ctrl->link); > dp_catalog_ctrl_config_misc(ctrl->catalog, cc, tb); > - dp_panel_timing_cfg(ctrl->panel); > + dp_panel_timing_cfg(ctrl->panel, wide_bus_en); > } > > /* > @@ -1799,6 +1799,7 @@ int dp_ctrl_on_stream(struct dp_ctrl *dp_ctrl) > int ret = 0; > bool mainlink_ready = false; > struct dp_ctrl_private *ctrl; > + u32 pixel_rate_orig; > > if (!dp_ctrl) > return -EINVAL; > @@ -1807,6 +1808,10 @@ int dp_ctrl_on_stream(struct dp_ctrl *dp_ctrl) > > ctrl->dp_ctrl.pixel_rate = ctrl->panel->dp_mode.drm_mode.clock; > > + pixel_rate_orig = ctrl->dp_ctrl.pixel_rate; > + if (dp_ctrl->wide_bus_en) > + ctrl->dp_ctrl.pixel_rate >>= 1; > + > DRM_DEBUG_DP("rate=%d, num_lanes=%d, pixel_rate=%d\n", > ctrl->link->link_params.rate, > ctrl->link->link_params.num_lanes, ctrl->dp_ctrl.pixel_rate); > @@ -1842,11 +1847,11 @@ int dp_ctrl_on_stream(struct dp_ctrl *dp_ctrl) > */ > reinit_completion(&ctrl->video_comp); > > - dp_ctrl_configure_source_params(ctrl); > + dp_ctrl_configure_source_params(ctrl, dp_ctrl->wide_bus_en); > > dp_catalog_ctrl_config_msa(ctrl->catalog, > ctrl->link->link_params.rate, > - ctrl->dp_ctrl.pixel_rate, dp_ctrl_use_fixed_nvid(ctrl)); > + pixel_rate_orig, dp_ctrl_use_fixed_nvid(ctrl)); > > dp_ctrl_setup_tr_unit(ctrl); > > diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.h b/drivers/gpu/drm/msm/dp/dp_ctrl.h > index 2363a2d..a0a5fbb 100644 > --- a/drivers/gpu/drm/msm/dp/dp_ctrl.h > +++ b/drivers/gpu/drm/msm/dp/dp_ctrl.h > @@ -17,6 +17,7 @@ struct dp_ctrl { > bool orientation; > atomic_t aborted; > u32 pixel_rate; > + bool wide_bus_en; > }; > > int dp_ctrl_host_init(struct dp_ctrl *dp_ctrl, bool flip, bool reset); > diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c > index 7cc4d21..8ecccf2 100644 > --- a/drivers/gpu/drm/msm/dp/dp_display.c > +++ b/drivers/gpu/drm/msm/dp/dp_display.c > @@ -115,6 +115,8 @@ struct dp_display_private { > struct dp_event event_list[DP_EVENT_Q_MAX]; > spinlock_t event_lock; > > + bool wide_bus_en; > + > struct dp_audio *audio; > }; > > @@ -848,6 +850,8 @@ static int dp_display_enable(struct dp_display_private *dp, u32 data) > return 0; > } > > + dp->ctrl->wide_bus_en = dp->wide_bus_en; > + > rc = dp_ctrl_on_stream(dp->ctrl); > if (!rc) > dp_display->power_on = true; > @@ -972,6 +976,7 @@ int dp_display_get_modes(struct msm_dp *dp, > dp->connector, dp_mode); > if (dp_mode->drm_mode.clock) > dp->max_pclk_khz = dp_mode->drm_mode.clock; > + > return ret; > } > > @@ -1437,6 +1442,28 @@ void msm_dp_irq_postinstall(struct msm_dp *dp_display) > dp_add_event(dp, EV_HPD_INIT_SETUP, 0, 100); > } > > +bool msm_dp_wide_bus_enable(struct msm_dp *dp_display) > +{ > + struct dp_display_private *dp; > + u32 revision, major, minor; > + > + dp = container_of(dp_display, struct dp_display_private, dp_display); > + > + /* for the time being widebus only support on DP */ > + if (dp_display->connector_type == DRM_MODE_CONNECTOR_DisplayPort) { > + revision = dp_catalog_hw_revision(dp->catalog); > + major = ((revision >> 28) & 0x0ff); > + minor = ((revision >> 16) & 0x0fff); > + > + DRM_DEBUG_DP("id=%d major=%d minor=%d\n", dp->id, major, minor); > + > + if (major >= 1 && minor >= 2) > + return true; > + } Please add an excplicit boolean to msm_dp_config instead. You can save it into dp_parser or dp_display, whichever works for you. Having such function doesn't help to determine if wide bus is available on a random platform supported by this driver or not. > + > + return false; > +} > + > void msm_dp_debugfs_init(struct msm_dp *dp_display, struct drm_minor *minor) > { > struct dp_display_private *dp; > @@ -1460,6 +1487,7 @@ int msm_dp_modeset_init(struct msm_dp *dp_display, struct drm_device *dev, > struct drm_encoder *encoder) > { > struct msm_drm_private *priv; > + struct dp_display_private *dp_priv; > int ret; > > if (WARN_ON(!encoder) || WARN_ON(!dp_display) || WARN_ON(!dev)) > @@ -1468,6 +1496,8 @@ int msm_dp_modeset_init(struct msm_dp *dp_display, struct drm_device *dev, > priv = dev->dev_private; > dp_display->drm_dev = dev; > > + dp_priv = container_of(dp_display, struct dp_display_private, dp_display); > + > ret = dp_display_request_irq(dp_display); > if (ret) { > DRM_ERROR("request_irq failed, ret=%d\n", ret); > @@ -1498,6 +1528,8 @@ int msm_dp_modeset_init(struct msm_dp *dp_display, struct drm_device *dev, > > priv->bridges[priv->num_bridges++] = dp_display->bridge; > > + dp_priv->wide_bus_en = msm_dp_wide_bus_enable(dp_display); > + > return 0; > } > > diff --git a/drivers/gpu/drm/msm/dp/dp_display.h b/drivers/gpu/drm/msm/dp/dp_display.h > index e3adcd5..b718cc9 100644 > --- a/drivers/gpu/drm/msm/dp/dp_display.h > +++ b/drivers/gpu/drm/msm/dp/dp_display.h > @@ -24,6 +24,8 @@ struct msm_dp { > > hdmi_codec_plugged_cb plugged_cb; > > + bool wide_bus_en; > + > u32 max_pclk_khz; > > u32 max_dp_lanes; > diff --git a/drivers/gpu/drm/msm/dp/dp_panel.c b/drivers/gpu/drm/msm/dp/dp_panel.c > index 71db10c..71deb1e 100644 > --- a/drivers/gpu/drm/msm/dp/dp_panel.c > +++ b/drivers/gpu/drm/msm/dp/dp_panel.c > @@ -353,7 +353,7 @@ void dp_panel_dump_regs(struct dp_panel *dp_panel) > dp_catalog_dump_regs(catalog); > } > > -int dp_panel_timing_cfg(struct dp_panel *dp_panel) > +int dp_panel_timing_cfg(struct dp_panel *dp_panel, bool wide_bus_en) > { > u32 data, total_ver, total_hor; > struct dp_catalog *catalog; > @@ -404,7 +404,7 @@ int dp_panel_timing_cfg(struct dp_panel *dp_panel) > > catalog->dp_active = data; > > - dp_catalog_panel_timing_cfg(catalog); > + dp_catalog_panel_timing_cfg(catalog, wide_bus_en); > panel->panel_on = true; > > return 0; > diff --git a/drivers/gpu/drm/msm/dp/dp_panel.h b/drivers/gpu/drm/msm/dp/dp_panel.h > index 9023e5b..5ec341a 100644 > --- a/drivers/gpu/drm/msm/dp/dp_panel.h > +++ b/drivers/gpu/drm/msm/dp/dp_panel.h > @@ -57,7 +57,7 @@ struct dp_panel { > > int dp_panel_init_panel_info(struct dp_panel *dp_panel); > int dp_panel_deinit(struct dp_panel *dp_panel); > -int dp_panel_timing_cfg(struct dp_panel *dp_panel); > +int dp_panel_timing_cfg(struct dp_panel *dp_panel, bool wide_bus_en); > void dp_panel_dump_regs(struct dp_panel *dp_panel); > int dp_panel_read_sink_caps(struct dp_panel *dp_panel, > struct drm_connector *connector); > diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h > index d7574e6..4f9c24e 100644 > --- a/drivers/gpu/drm/msm/msm_drv.h > +++ b/drivers/gpu/drm/msm/msm_drv.h > @@ -399,6 +399,7 @@ void msm_dp_irq_postinstall(struct msm_dp *dp_display); > void msm_dp_snapshot(struct msm_disp_state *disp_state, struct msm_dp *dp_display); > > void msm_dp_debugfs_init(struct msm_dp *dp_display, struct drm_minor *minor); > +bool msm_dp_wide_bus_enable(struct msm_dp *dp_display); > > #else > static inline int __init msm_dp_register(void) > @@ -449,6 +450,11 @@ static inline void msm_dp_debugfs_init(struct msm_dp *dp_display, > { > } > > +static inline bool msm_dp_wide_bus_enable(struct msm_dp *dp_display) > +{ > + return false; > +} > + > #endif > > void __init msm_mdp_register(void);
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c index 2b2dbb7..1e96cede 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c @@ -2138,8 +2138,10 @@ int dpu_encoder_setup(struct drm_device *dev, struct drm_encoder *enc, timer_setup(&dpu_enc->vsync_event_timer, dpu_encoder_vsync_event_handler, 0); - else if (disp_info->intf_type == DRM_MODE_ENCODER_TMDS) + else if (disp_info->intf_type == DRM_MODE_ENCODER_TMDS) { dpu_enc->dp = priv->dp[disp_info->h_tile_instance[0]]; + dpu_enc->wide_bus_en = msm_dp_wide_bus_enable(dpu_enc->dp); + } INIT_DELAYED_WORK(&dpu_enc->delayed_off_work, dpu_encoder_off_work); diff --git a/drivers/gpu/drm/msm/dp/dp_catalog.c b/drivers/gpu/drm/msm/dp/dp_catalog.c index 6ae9b29..524eccc 100644 --- a/drivers/gpu/drm/msm/dp/dp_catalog.c +++ b/drivers/gpu/drm/msm/dp/dp_catalog.c @@ -24,6 +24,8 @@ #define DP_INTERRUPT_STATUS_ACK_SHIFT 1 #define DP_INTERRUPT_STATUS_MASK_SHIFT 2 +#define DP_INTF_CONFIG_DATABUS_WIDEN BIT(4) + #define DP_INTERRUPT_STATUS1 \ (DP_INTR_AUX_I2C_DONE| \ DP_INTR_WRONG_ADDR | DP_INTR_TIMEOUT | \ @@ -483,6 +485,22 @@ int dp_catalog_ctrl_set_pattern(struct dp_catalog *dp_catalog, } /** + * dp_catalog_hw_revision() - retrieve DP hw revision + * + * @dp_catalog: DP catalog structure + * + * Return: DP controller hw revision + * + */ +u32 dp_catalog_hw_revision(struct dp_catalog *dp_catalog) +{ + struct dp_catalog_private *catalog = container_of(dp_catalog, + struct dp_catalog_private, dp_catalog); + + return dp_read_ahb(catalog, REG_DP_HW_VERSION); +} + +/** * dp_catalog_ctrl_reset() - reset DP controller * * @dp_catalog: DP catalog structure @@ -739,10 +757,11 @@ u32 dp_catalog_ctrl_read_phy_pattern(struct dp_catalog *dp_catalog) } /* panel related catalog functions */ -int dp_catalog_panel_timing_cfg(struct dp_catalog *dp_catalog) +int dp_catalog_panel_timing_cfg(struct dp_catalog *dp_catalog, bool wide_bus_en) { struct dp_catalog_private *catalog = container_of(dp_catalog, struct dp_catalog_private, dp_catalog); + u32 reg; dp_write_link(catalog, REG_DP_TOTAL_HOR_VER, dp_catalog->total); @@ -751,7 +770,18 @@ int dp_catalog_panel_timing_cfg(struct dp_catalog *dp_catalog) dp_write_link(catalog, REG_DP_HSYNC_VSYNC_WIDTH_POLARITY, dp_catalog->width_blanking); dp_write_link(catalog, REG_DP_ACTIVE_HOR_VER, dp_catalog->dp_active); - dp_write_p0(catalog, MMSS_DP_INTF_CONFIG, 0); + + reg = dp_read_p0(catalog, MMSS_DP_INTF_CONFIG); + + if (wide_bus_en) + reg |= DP_INTF_CONFIG_DATABUS_WIDEN; + else + reg &= ~DP_INTF_CONFIG_DATABUS_WIDEN; + + + DRM_DEBUG_DP("wide_bus_en=%d reg=%x\n", wide_bus_en, reg); + + dp_write_p0(catalog, MMSS_DP_INTF_CONFIG, reg); return 0; } diff --git a/drivers/gpu/drm/msm/dp/dp_catalog.h b/drivers/gpu/drm/msm/dp/dp_catalog.h index 6965afa..2ba1ea4 100644 --- a/drivers/gpu/drm/msm/dp/dp_catalog.h +++ b/drivers/gpu/drm/msm/dp/dp_catalog.h @@ -95,6 +95,7 @@ void dp_catalog_ctrl_config_misc(struct dp_catalog *dp_catalog, u32 cc, u32 tb); void dp_catalog_ctrl_config_msa(struct dp_catalog *dp_catalog, u32 rate, u32 stream_rate_khz, bool fixed_nvid); int dp_catalog_ctrl_set_pattern(struct dp_catalog *dp_catalog, u32 pattern); +u32 dp_catalog_hw_revision(struct dp_catalog *dp_catalog); void dp_catalog_ctrl_reset(struct dp_catalog *dp_catalog); bool dp_catalog_ctrl_mainlink_ready(struct dp_catalog *dp_catalog); void dp_catalog_ctrl_enable_irq(struct dp_catalog *dp_catalog, bool enable); @@ -115,7 +116,7 @@ void dp_catalog_ctrl_send_phy_pattern(struct dp_catalog *dp_catalog, u32 dp_catalog_ctrl_read_phy_pattern(struct dp_catalog *dp_catalog); /* DP Panel APIs */ -int dp_catalog_panel_timing_cfg(struct dp_catalog *dp_catalog); +int dp_catalog_panel_timing_cfg(struct dp_catalog *dp_catalog, bool wide_bus_en); void dp_catalog_dump_regs(struct dp_catalog *dp_catalog); void dp_catalog_panel_tpg_enable(struct dp_catalog *dp_catalog, struct drm_display_mode *drm_mode); diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c index c724cb0..b07574c 100644 --- a/drivers/gpu/drm/msm/dp/dp_ctrl.c +++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c @@ -154,7 +154,7 @@ static void dp_ctrl_config_ctrl(struct dp_ctrl_private *ctrl) dp_catalog_ctrl_config_ctrl(ctrl->catalog, config); } -static void dp_ctrl_configure_source_params(struct dp_ctrl_private *ctrl) +static void dp_ctrl_configure_source_params(struct dp_ctrl_private *ctrl, bool wide_bus_en) { u32 cc, tb; @@ -167,7 +167,7 @@ static void dp_ctrl_configure_source_params(struct dp_ctrl_private *ctrl) ctrl->panel->dp_mode.bpp); cc = dp_link_get_colorimetry_config(ctrl->link); dp_catalog_ctrl_config_misc(ctrl->catalog, cc, tb); - dp_panel_timing_cfg(ctrl->panel); + dp_panel_timing_cfg(ctrl->panel, wide_bus_en); } /* @@ -1799,6 +1799,7 @@ int dp_ctrl_on_stream(struct dp_ctrl *dp_ctrl) int ret = 0; bool mainlink_ready = false; struct dp_ctrl_private *ctrl; + u32 pixel_rate_orig; if (!dp_ctrl) return -EINVAL; @@ -1807,6 +1808,10 @@ int dp_ctrl_on_stream(struct dp_ctrl *dp_ctrl) ctrl->dp_ctrl.pixel_rate = ctrl->panel->dp_mode.drm_mode.clock; + pixel_rate_orig = ctrl->dp_ctrl.pixel_rate; + if (dp_ctrl->wide_bus_en) + ctrl->dp_ctrl.pixel_rate >>= 1; + DRM_DEBUG_DP("rate=%d, num_lanes=%d, pixel_rate=%d\n", ctrl->link->link_params.rate, ctrl->link->link_params.num_lanes, ctrl->dp_ctrl.pixel_rate); @@ -1842,11 +1847,11 @@ int dp_ctrl_on_stream(struct dp_ctrl *dp_ctrl) */ reinit_completion(&ctrl->video_comp); - dp_ctrl_configure_source_params(ctrl); + dp_ctrl_configure_source_params(ctrl, dp_ctrl->wide_bus_en); dp_catalog_ctrl_config_msa(ctrl->catalog, ctrl->link->link_params.rate, - ctrl->dp_ctrl.pixel_rate, dp_ctrl_use_fixed_nvid(ctrl)); + pixel_rate_orig, dp_ctrl_use_fixed_nvid(ctrl)); dp_ctrl_setup_tr_unit(ctrl); diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.h b/drivers/gpu/drm/msm/dp/dp_ctrl.h index 2363a2d..a0a5fbb 100644 --- a/drivers/gpu/drm/msm/dp/dp_ctrl.h +++ b/drivers/gpu/drm/msm/dp/dp_ctrl.h @@ -17,6 +17,7 @@ struct dp_ctrl { bool orientation; atomic_t aborted; u32 pixel_rate; + bool wide_bus_en; }; int dp_ctrl_host_init(struct dp_ctrl *dp_ctrl, bool flip, bool reset); diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c index 7cc4d21..8ecccf2 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -115,6 +115,8 @@ struct dp_display_private { struct dp_event event_list[DP_EVENT_Q_MAX]; spinlock_t event_lock; + bool wide_bus_en; + struct dp_audio *audio; }; @@ -848,6 +850,8 @@ static int dp_display_enable(struct dp_display_private *dp, u32 data) return 0; } + dp->ctrl->wide_bus_en = dp->wide_bus_en; + rc = dp_ctrl_on_stream(dp->ctrl); if (!rc) dp_display->power_on = true; @@ -972,6 +976,7 @@ int dp_display_get_modes(struct msm_dp *dp, dp->connector, dp_mode); if (dp_mode->drm_mode.clock) dp->max_pclk_khz = dp_mode->drm_mode.clock; + return ret; } @@ -1437,6 +1442,28 @@ void msm_dp_irq_postinstall(struct msm_dp *dp_display) dp_add_event(dp, EV_HPD_INIT_SETUP, 0, 100); } +bool msm_dp_wide_bus_enable(struct msm_dp *dp_display) +{ + struct dp_display_private *dp; + u32 revision, major, minor; + + dp = container_of(dp_display, struct dp_display_private, dp_display); + + /* for the time being widebus only support on DP */ + if (dp_display->connector_type == DRM_MODE_CONNECTOR_DisplayPort) { + revision = dp_catalog_hw_revision(dp->catalog); + major = ((revision >> 28) & 0x0ff); + minor = ((revision >> 16) & 0x0fff); + + DRM_DEBUG_DP("id=%d major=%d minor=%d\n", dp->id, major, minor); + + if (major >= 1 && minor >= 2) + return true; + } + + return false; +} + void msm_dp_debugfs_init(struct msm_dp *dp_display, struct drm_minor *minor) { struct dp_display_private *dp; @@ -1460,6 +1487,7 @@ int msm_dp_modeset_init(struct msm_dp *dp_display, struct drm_device *dev, struct drm_encoder *encoder) { struct msm_drm_private *priv; + struct dp_display_private *dp_priv; int ret; if (WARN_ON(!encoder) || WARN_ON(!dp_display) || WARN_ON(!dev)) @@ -1468,6 +1496,8 @@ int msm_dp_modeset_init(struct msm_dp *dp_display, struct drm_device *dev, priv = dev->dev_private; dp_display->drm_dev = dev; + dp_priv = container_of(dp_display, struct dp_display_private, dp_display); + ret = dp_display_request_irq(dp_display); if (ret) { DRM_ERROR("request_irq failed, ret=%d\n", ret); @@ -1498,6 +1528,8 @@ int msm_dp_modeset_init(struct msm_dp *dp_display, struct drm_device *dev, priv->bridges[priv->num_bridges++] = dp_display->bridge; + dp_priv->wide_bus_en = msm_dp_wide_bus_enable(dp_display); + return 0; } diff --git a/drivers/gpu/drm/msm/dp/dp_display.h b/drivers/gpu/drm/msm/dp/dp_display.h index e3adcd5..b718cc9 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.h +++ b/drivers/gpu/drm/msm/dp/dp_display.h @@ -24,6 +24,8 @@ struct msm_dp { hdmi_codec_plugged_cb plugged_cb; + bool wide_bus_en; + u32 max_pclk_khz; u32 max_dp_lanes; diff --git a/drivers/gpu/drm/msm/dp/dp_panel.c b/drivers/gpu/drm/msm/dp/dp_panel.c index 71db10c..71deb1e 100644 --- a/drivers/gpu/drm/msm/dp/dp_panel.c +++ b/drivers/gpu/drm/msm/dp/dp_panel.c @@ -353,7 +353,7 @@ void dp_panel_dump_regs(struct dp_panel *dp_panel) dp_catalog_dump_regs(catalog); } -int dp_panel_timing_cfg(struct dp_panel *dp_panel) +int dp_panel_timing_cfg(struct dp_panel *dp_panel, bool wide_bus_en) { u32 data, total_ver, total_hor; struct dp_catalog *catalog; @@ -404,7 +404,7 @@ int dp_panel_timing_cfg(struct dp_panel *dp_panel) catalog->dp_active = data; - dp_catalog_panel_timing_cfg(catalog); + dp_catalog_panel_timing_cfg(catalog, wide_bus_en); panel->panel_on = true; return 0; diff --git a/drivers/gpu/drm/msm/dp/dp_panel.h b/drivers/gpu/drm/msm/dp/dp_panel.h index 9023e5b..5ec341a 100644 --- a/drivers/gpu/drm/msm/dp/dp_panel.h +++ b/drivers/gpu/drm/msm/dp/dp_panel.h @@ -57,7 +57,7 @@ struct dp_panel { int dp_panel_init_panel_info(struct dp_panel *dp_panel); int dp_panel_deinit(struct dp_panel *dp_panel); -int dp_panel_timing_cfg(struct dp_panel *dp_panel); +int dp_panel_timing_cfg(struct dp_panel *dp_panel, bool wide_bus_en); void dp_panel_dump_regs(struct dp_panel *dp_panel); int dp_panel_read_sink_caps(struct dp_panel *dp_panel, struct drm_connector *connector); diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h index d7574e6..4f9c24e 100644 --- a/drivers/gpu/drm/msm/msm_drv.h +++ b/drivers/gpu/drm/msm/msm_drv.h @@ -399,6 +399,7 @@ void msm_dp_irq_postinstall(struct msm_dp *dp_display); void msm_dp_snapshot(struct msm_disp_state *disp_state, struct msm_dp *dp_display); void msm_dp_debugfs_init(struct msm_dp *dp_display, struct drm_minor *minor); +bool msm_dp_wide_bus_enable(struct msm_dp *dp_display); #else static inline int __init msm_dp_register(void) @@ -449,6 +450,11 @@ static inline void msm_dp_debugfs_init(struct msm_dp *dp_display, { } +static inline bool msm_dp_wide_bus_enable(struct msm_dp *dp_display) +{ + return false; +} + #endif void __init msm_mdp_register(void);