| Message ID | 20241205-dp_mst-v1-38-f8618d42a99a@quicinc.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/msm/dp: Add MST support for MSM chipsets | expand |
On Thu, Dec 05, 2024 at 08:32:09PM -0800, Abhinav Kumar wrote: > Initiliaze a DPMST encoder for each MST capable DP controller > and the number of encoders it supports depends on the number > of streams it supports. Replace the opencoded instances of max_stream > with the newly introduced API to centralize the usage. > > Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com> > --- > drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h | 2 ++ > drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 23 ++++++++++++++++++++++- > drivers/gpu/drm/msm/dp/dp_display.c | 26 +++++++++++++++++++++----- > drivers/gpu/drm/msm/msm_drv.h | 14 ++++++++++++++ Split into two commits > 4 files changed, 59 insertions(+), 6 deletions(-) > > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h > index 92b5ee390788d16e85e195a664417896a2bf1cae..618a5b6f8222882ed8c972a78a26f8c25ca389a8 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h > @@ -28,6 +28,7 @@ > * @h_tile_instance: Controller instance used per tile. Number of elements is > * based on num_of_h_tiles > * @is_cmd_mode Boolean to indicate if the CMD mode is requested > + * @stream_id stream id for which the interface needs to be acquired > * @vsync_source: Source of the TE signal for DSI CMD devices > */ > struct msm_display_info { > @@ -35,6 +36,7 @@ struct msm_display_info { > uint32_t num_of_h_tiles; > uint32_t h_tile_instance[MAX_H_TILES_PER_DISPLAY]; > bool is_cmd_mode; > + int stream_id; > enum dpu_vsync_source vsync_source; > }; > > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c > index 8b251f87a0520da0807b9b7aed17493990e41627..359de04abf4bbead3daa5e8b357a3c34216e3e65 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c > @@ -636,7 +636,8 @@ static int _dpu_kms_initialize_displayport(struct drm_device *dev, > struct msm_display_info info; > bool yuv_supported; > int rc; > - int i; > + int i, stream_id; > + int stream_cnt; > > for (i = 0; i < ARRAY_SIZE(priv->dp); i++) { > if (!priv->dp[i]) > @@ -659,6 +660,26 @@ static int _dpu_kms_initialize_displayport(struct drm_device *dev, > DPU_ERROR("modeset_init failed for DP, rc = %d\n", rc); > return rc; > } > + > + stream_cnt = msm_dp_get_mst_max_stream(priv->dp[i]); Is there any reason for this not being a part of the DPU catalog? DPU can support required number of DPMST streams even if DP doesn't > + > + if (stream_cnt > 1) { > + for (stream_id = 0; stream_id < stream_cnt; stream_id++) { > + info.stream_id = stream_id; > + encoder = dpu_encoder_init(dev, DRM_MODE_ENCODER_DPMST, &info); > + if (IS_ERR(encoder)) { > + DPU_ERROR("encoder init failed for dp mst display\n"); > + return PTR_ERR(encoder); > + } > + > + rc = msm_dp_mst_bridge_init(priv->dp[i], encoder); > + if (rc) { > + DPU_ERROR("dp mst bridge %d init failed, %d\n", > + stream_id, rc); > + continue; > + } > + } > + } > } > > return 0; > diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c > index 80df79a7c2077d49184cdeb7b801bf0699ff4ece..eafec9ab4f83cb44e861687e7550748b4d9b7ece 100644 > --- a/drivers/gpu/drm/msm/dp/dp_display.c > +++ b/drivers/gpu/drm/msm/dp/dp_display.c > @@ -432,7 +432,8 @@ static int msm_dp_display_process_hpd_high(struct msm_dp_display_private *dp) > if (rc) > goto end; > > - if (dp->max_stream <= DEFAULT_STREAM_COUNT || !msm_dp_panel_read_mst_cap(dp->panel)) { > + if (msm_dp_get_mst_max_stream(dp_display) <= DEFAULT_STREAM_COUNT || > + !msm_dp_panel_read_mst_cap(dp->panel)) { > rc = msm_dp_panel_read_edid(dp->panel, connector); > if (rc) > goto end; > @@ -457,7 +458,8 @@ static int msm_dp_display_process_hpd_high(struct msm_dp_display_private *dp) > */ > msm_dp_link_psm_config(dp->link, &dp->panel->link_info, false); > > - if (dp->max_stream > DEFAULT_STREAM_COUNT && msm_dp_panel_read_mst_cap(dp->panel)) > + if (msm_dp_get_mst_max_stream(dp_display) > DEFAULT_STREAM_COUNT && > + msm_dp_panel_read_mst_cap(dp->panel)) > msm_dp_display_mst_init(dp); > > msm_dp_link_reset_phy_params_vx_px(dp->link); > @@ -977,7 +979,7 @@ static int msm_dp_display_enable(struct msm_dp_display_private *dp, > > drm_dbg_dp(dp->drm_dev, "sink_count=%d\n", dp->link->sink_count); > > - rc = msm_dp_ctrl_on_stream(dp->ctrl, msm_dp_panel, dp->max_stream); > + rc = msm_dp_ctrl_on_stream(dp->ctrl, msm_dp_panel, msm_dp_get_mst_max_stream(&dp->msm_dp_display)); > > return rc; > } > @@ -1444,6 +1446,20 @@ static int msm_dp_display_get_connector_type(struct platform_device *pdev, > return connector_type; > } > > +int msm_dp_get_mst_max_stream(const struct msm_dp *dp_display) > +{ > + struct msm_dp_display_private *dp_priv; > + > + dp_priv = container_of(dp_display, struct msm_dp_display_private, msm_dp_display); > + > + return dp_priv->max_stream; > +} > + > +int msm_dp_mst_bridge_init(struct msm_dp *dp_display, struct drm_encoder *encoder) > +{ > + return msm_dp_mst_drm_bridge_init(dp_display, encoder); > +} > + > static int msm_dp_display_probe(struct platform_device *pdev) > { > int rc = 0; > @@ -1745,12 +1761,12 @@ void msm_dp_display_disable_helper(struct msm_dp *dp, struct msm_dp_panel *msm_d > return; > } > > - if (msm_dp_display->max_stream > DEFAULT_STREAM_COUNT) > + if (msm_dp_get_mst_max_stream(dp) > DEFAULT_STREAM_COUNT) > msm_dp_ctrl_push_vcpf(msm_dp_display->ctrl, msm_dp_panel); > else > msm_dp_ctrl_push_idle(msm_dp_display->ctrl); > > - if (msm_dp_display->max_stream > DEFAULT_STREAM_COUNT) { > + if (msm_dp_get_mst_max_stream(dp) > DEFAULT_STREAM_COUNT) { > msm_dp_ctrl_mst_stream_channel_slot_setup(msm_dp_display->ctrl, > msm_dp_display->max_stream); > msm_dp_ctrl_mst_send_act(msm_dp_display->ctrl); > diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h > index 1616a4682795f6b9b30cc0bef2baf448ccc62bc0..12b50a797772f574122481cd8a1c7c88aacb8250 100644 > --- a/drivers/gpu/drm/msm/msm_drv.h > +++ b/drivers/gpu/drm/msm/msm_drv.h > @@ -372,6 +372,10 @@ bool msm_dp_needs_periph_flush(const struct msm_dp *dp_display, > const struct drm_display_mode *mode); > bool msm_dp_wide_bus_available(const struct msm_dp *dp_display); > > +int msm_dp_get_mst_max_stream(const struct msm_dp *dp_display); > + > +int msm_dp_mst_bridge_init(struct msm_dp *dp_display, struct drm_encoder *encoder); > + > #else > static inline int __init msm_dp_register(void) > { > @@ -388,6 +392,16 @@ static inline int msm_dp_modeset_init(struct msm_dp *dp_display, > return -EINVAL; > } > > +static inline int msm_dp_get_mst_max_stream(struct msm_dp *dp_display) > +{ > + return -EINVAL; > +} > + > +int msm_dp_mst_bridge_init(struct msm_dp *dp_display, struct drm_encoder *encoder) > +{ > + return -EINVAL; > +} > + > static inline void msm_dp_snapshot(struct msm_disp_state *disp_state, struct msm_dp *dp_display) > { > } > > -- > 2.34.1 >
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h index 92b5ee390788d16e85e195a664417896a2bf1cae..618a5b6f8222882ed8c972a78a26f8c25ca389a8 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h @@ -28,6 +28,7 @@ * @h_tile_instance: Controller instance used per tile. Number of elements is * based on num_of_h_tiles * @is_cmd_mode Boolean to indicate if the CMD mode is requested + * @stream_id stream id for which the interface needs to be acquired * @vsync_source: Source of the TE signal for DSI CMD devices */ struct msm_display_info { @@ -35,6 +36,7 @@ struct msm_display_info { uint32_t num_of_h_tiles; uint32_t h_tile_instance[MAX_H_TILES_PER_DISPLAY]; bool is_cmd_mode; + int stream_id; enum dpu_vsync_source vsync_source; }; diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c index 8b251f87a0520da0807b9b7aed17493990e41627..359de04abf4bbead3daa5e8b357a3c34216e3e65 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c @@ -636,7 +636,8 @@ static int _dpu_kms_initialize_displayport(struct drm_device *dev, struct msm_display_info info; bool yuv_supported; int rc; - int i; + int i, stream_id; + int stream_cnt; for (i = 0; i < ARRAY_SIZE(priv->dp); i++) { if (!priv->dp[i]) @@ -659,6 +660,26 @@ static int _dpu_kms_initialize_displayport(struct drm_device *dev, DPU_ERROR("modeset_init failed for DP, rc = %d\n", rc); return rc; } + + stream_cnt = msm_dp_get_mst_max_stream(priv->dp[i]); + + if (stream_cnt > 1) { + for (stream_id = 0; stream_id < stream_cnt; stream_id++) { + info.stream_id = stream_id; + encoder = dpu_encoder_init(dev, DRM_MODE_ENCODER_DPMST, &info); + if (IS_ERR(encoder)) { + DPU_ERROR("encoder init failed for dp mst display\n"); + return PTR_ERR(encoder); + } + + rc = msm_dp_mst_bridge_init(priv->dp[i], encoder); + if (rc) { + DPU_ERROR("dp mst bridge %d init failed, %d\n", + stream_id, rc); + continue; + } + } + } } return 0; diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c index 80df79a7c2077d49184cdeb7b801bf0699ff4ece..eafec9ab4f83cb44e861687e7550748b4d9b7ece 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -432,7 +432,8 @@ static int msm_dp_display_process_hpd_high(struct msm_dp_display_private *dp) if (rc) goto end; - if (dp->max_stream <= DEFAULT_STREAM_COUNT || !msm_dp_panel_read_mst_cap(dp->panel)) { + if (msm_dp_get_mst_max_stream(dp_display) <= DEFAULT_STREAM_COUNT || + !msm_dp_panel_read_mst_cap(dp->panel)) { rc = msm_dp_panel_read_edid(dp->panel, connector); if (rc) goto end; @@ -457,7 +458,8 @@ static int msm_dp_display_process_hpd_high(struct msm_dp_display_private *dp) */ msm_dp_link_psm_config(dp->link, &dp->panel->link_info, false); - if (dp->max_stream > DEFAULT_STREAM_COUNT && msm_dp_panel_read_mst_cap(dp->panel)) + if (msm_dp_get_mst_max_stream(dp_display) > DEFAULT_STREAM_COUNT && + msm_dp_panel_read_mst_cap(dp->panel)) msm_dp_display_mst_init(dp); msm_dp_link_reset_phy_params_vx_px(dp->link); @@ -977,7 +979,7 @@ static int msm_dp_display_enable(struct msm_dp_display_private *dp, drm_dbg_dp(dp->drm_dev, "sink_count=%d\n", dp->link->sink_count); - rc = msm_dp_ctrl_on_stream(dp->ctrl, msm_dp_panel, dp->max_stream); + rc = msm_dp_ctrl_on_stream(dp->ctrl, msm_dp_panel, msm_dp_get_mst_max_stream(&dp->msm_dp_display)); return rc; } @@ -1444,6 +1446,20 @@ static int msm_dp_display_get_connector_type(struct platform_device *pdev, return connector_type; } +int msm_dp_get_mst_max_stream(const struct msm_dp *dp_display) +{ + struct msm_dp_display_private *dp_priv; + + dp_priv = container_of(dp_display, struct msm_dp_display_private, msm_dp_display); + + return dp_priv->max_stream; +} + +int msm_dp_mst_bridge_init(struct msm_dp *dp_display, struct drm_encoder *encoder) +{ + return msm_dp_mst_drm_bridge_init(dp_display, encoder); +} + static int msm_dp_display_probe(struct platform_device *pdev) { int rc = 0; @@ -1745,12 +1761,12 @@ void msm_dp_display_disable_helper(struct msm_dp *dp, struct msm_dp_panel *msm_d return; } - if (msm_dp_display->max_stream > DEFAULT_STREAM_COUNT) + if (msm_dp_get_mst_max_stream(dp) > DEFAULT_STREAM_COUNT) msm_dp_ctrl_push_vcpf(msm_dp_display->ctrl, msm_dp_panel); else msm_dp_ctrl_push_idle(msm_dp_display->ctrl); - if (msm_dp_display->max_stream > DEFAULT_STREAM_COUNT) { + if (msm_dp_get_mst_max_stream(dp) > DEFAULT_STREAM_COUNT) { msm_dp_ctrl_mst_stream_channel_slot_setup(msm_dp_display->ctrl, msm_dp_display->max_stream); msm_dp_ctrl_mst_send_act(msm_dp_display->ctrl); diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h index 1616a4682795f6b9b30cc0bef2baf448ccc62bc0..12b50a797772f574122481cd8a1c7c88aacb8250 100644 --- a/drivers/gpu/drm/msm/msm_drv.h +++ b/drivers/gpu/drm/msm/msm_drv.h @@ -372,6 +372,10 @@ bool msm_dp_needs_periph_flush(const struct msm_dp *dp_display, const struct drm_display_mode *mode); bool msm_dp_wide_bus_available(const struct msm_dp *dp_display); +int msm_dp_get_mst_max_stream(const struct msm_dp *dp_display); + +int msm_dp_mst_bridge_init(struct msm_dp *dp_display, struct drm_encoder *encoder); + #else static inline int __init msm_dp_register(void) { @@ -388,6 +392,16 @@ static inline int msm_dp_modeset_init(struct msm_dp *dp_display, return -EINVAL; } +static inline int msm_dp_get_mst_max_stream(struct msm_dp *dp_display) +{ + return -EINVAL; +} + +int msm_dp_mst_bridge_init(struct msm_dp *dp_display, struct drm_encoder *encoder) +{ + return -EINVAL; +} + static inline void msm_dp_snapshot(struct msm_disp_state *disp_state, struct msm_dp *dp_display) { }
Initiliaze a DPMST encoder for each MST capable DP controller and the number of encoders it supports depends on the number of streams it supports. Replace the opencoded instances of max_stream with the newly introduced API to centralize the usage. Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com> --- drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h | 2 ++ drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 23 ++++++++++++++++++++++- drivers/gpu/drm/msm/dp/dp_display.c | 26 +++++++++++++++++++++----- drivers/gpu/drm/msm/msm_drv.h | 14 ++++++++++++++ 4 files changed, 59 insertions(+), 6 deletions(-)