Currently the msm_dp_*** functions implement the same sequence which would happen when drm_bridge is used. hence get rid of this intermediate layer and align with the drm_bridge usage to avoid customized implementation.

Signed-off-by: Kuogee Hsieh quic_khsieh@quicinc.com

Changes in v2: -- revise commit text -- rename dp_bridge to msm_dp_bridge -- delete empty functions

Changes in v3: -- replace kzalloc() with devm_kzalloc() -- replace __dp_display_enable() with dp_display_enable() -- replace __dp_display_disable() with dp_display_disable()

Changes in v4: -- msm_dp_bridge_init() called from msm_dp_modeset_init() same as dsi

Changes in v5: -- delete attach, mode_fixup and pre_enable from dp_bridge_ops --- drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 21 -------- drivers/gpu/drm/msm/dp/dp_display.c | 16 +++++- drivers/gpu/drm/msm/dp/dp_display.h | 1 + drivers/gpu/drm/msm/dp/dp_drm.c | 77 +++++++++++++++++++++++++++++ drivers/gpu/drm/msm/msm_drv.h | 12 +++-- 5 files changed, 100 insertions(+), 27 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c index 31050aa..c4e08c4 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c @@ -1003,9 +1003,6 @@ static void dpu_encoder_virt_mode_set(struct drm_encoder *drm_enc,

trace_dpu_enc_mode_set(DRMID(drm_enc));

- if (drm_enc->encoder_type == DRM_MODE_ENCODER_TMDS) - msm_dp_display_mode_set(dpu_enc->dp, drm_enc, mode, adj_mode); - list_for_each_entry(conn_iter, connector_list, head) if (conn_iter->encoder == drm_enc) conn = conn_iter; @@ -1181,14 +1178,6 @@ static void dpu_encoder_virt_enable(struct drm_encoder *drm_enc)

_dpu_encoder_virt_enable_helper(drm_enc);

- if (drm_enc->encoder_type == DRM_MODE_ENCODER_TMDS) { - ret = msm_dp_display_enable(dpu_enc->dp, drm_enc); - if (ret) { - DPU_ERROR_ENC(dpu_enc, "dp display enable failed: %d\n", - ret); - goto out; - } - } dpu_enc->enabled = true;

out: @@ -1214,11 +1203,6 @@ static void dpu_encoder_virt_disable(struct drm_encoder *drm_enc) /* wait for idle */ dpu_encoder_wait_for_event(drm_enc, MSM_ENC_TX_COMPLETE);

- if (drm_enc->encoder_type == DRM_MODE_ENCODER_TMDS) { - if (msm_dp_display_pre_disable(dpu_enc->dp, drm_enc)) - DPU_ERROR_ENC(dpu_enc, "dp display push idle failed\n"); - } - dpu_encoder_resource_control(drm_enc, DPU_ENC_RC_EVENT_PRE_STOP);

for (i = 0; i < dpu_enc->num_phys_encs; i++) { @@ -1243,11 +1227,6 @@ static void dpu_encoder_virt_disable(struct drm_encoder *drm_enc)

DPU_DEBUG_ENC(dpu_enc, "encoder disabled\n");

- if (drm_enc->encoder_type == DRM_MODE_ENCODER_TMDS) { - if (msm_dp_display_disable(dpu_enc->dp, drm_enc)) - DPU_ERROR_ENC(dpu_enc, "dp display disable failed\n"); - } - mutex_unlock(&dpu_enc->enc_lock); }

diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c index 2f113ff..89a8d43 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -1571,6 +1571,18 @@ int msm_dp_modeset_init(struct msm_dp *dp_display, struct drm_device *dev, }

priv->connectors[priv->num_connectors++] = dp_display->connector; + + dp_display->bridge = msm_dp_bridge_init(dp_display, dev, encoder); + if (IS_ERR(dp_display->bridge)) { + ret = PTR_ERR(dp_display->bridge); + DRM_DEV_ERROR(dev->dev, + "failed to create dp bridge: %d\n", ret); + dp_display->bridge = NULL; + return ret; + } + + priv->bridges[priv->num_bridges++] = dp_display->bridge; + return 0; }

@@ -1674,8 +1686,8 @@ int msm_dp_display_disable(struct msm_dp *dp, struct drm_encoder *encoder) }

void msm_dp_display_mode_set(struct msm_dp *dp, struct drm_encoder *encoder, - struct drm_display_mode *mode, - struct drm_display_mode *adjusted_mode) + const struct drm_display_mode *mode, + const struct drm_display_mode *adjusted_mode) { struct dp_display_private *dp_display;

diff --git a/drivers/gpu/drm/msm/dp/dp_display.h b/drivers/gpu/drm/msm/dp/dp_display.h index 76f45f9..2237e80 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.h +++ b/drivers/gpu/drm/msm/dp/dp_display.h @@ -13,6 +13,7 @@ struct msm_dp { struct drm_device *drm_dev; struct device *codec_dev; + struct drm_bridge *bridge; struct drm_connector *connector; struct drm_encoder *encoder; struct drm_panel *drm_panel; diff --git a/drivers/gpu/drm/msm/dp/dp_drm.c b/drivers/gpu/drm/msm/dp/dp_drm.c index f33e315..15c0309e 100644 --- a/drivers/gpu/drm/msm/dp/dp_drm.c +++ b/drivers/gpu/drm/msm/dp/dp_drm.c @@ -5,12 +5,21 @@

#include <drm/drm_atomic_helper.h> #include <drm/drm_atomic.h> +#include <drm/drm_bridge.h> #include <drm/drm_crtc.h>

#include "msm_drv.h" #include "msm_kms.h" #include "dp_drm.h"

+ +struct msm_dp_bridge { + struct drm_bridge bridge; + struct msm_dp *dp_display; +}; + +#define to_dp_display(x) container_of((x), struct msm_dp_bridge, bridge) + struct dp_connector { struct drm_connector base; struct msm_dp *dp_display; @@ -162,3 +171,71 @@ struct drm_connector *dp_drm_connector_init(struct msm_dp *dp_display)

return connector; } + +static void dp_bridge_mode_set(struct drm_bridge *drm_bridge, + const struct drm_display_mode *mode, + const struct drm_display_mode *adjusted_mode) +{ + struct msm_dp_bridge *dp_bridge = to_dp_display(drm_bridge); + struct msm_dp *dp_display = dp_bridge->dp_display; + + msm_dp_display_mode_set(dp_display, drm_bridge->encoder, mode, adjusted_mode); +} + +static void dp_bridge_enable(struct drm_bridge *drm_bridge) +{ + struct msm_dp_bridge *dp_bridge = to_dp_display(drm_bridge); + struct msm_dp *dp_display = dp_bridge->dp_display; + + msm_dp_display_enable(dp_display, drm_bridge->encoder); +} + +static void dp_bridge_disable(struct drm_bridge *drm_bridge) +{ + struct msm_dp_bridge *dp_bridge = to_dp_display(drm_bridge); + struct msm_dp *dp_display = dp_bridge->dp_display; + + msm_dp_display_pre_disable(dp_display, drm_bridge->encoder); +} + +static void dp_bridge_post_disable(struct drm_bridge *drm_bridge) +{ + struct msm_dp_bridge *dp_bridge = to_dp_display(drm_bridge); + struct msm_dp *dp_display = dp_bridge->dp_display; + + msm_dp_display_disable(dp_display, drm_bridge->encoder); +} + +static const struct drm_bridge_funcs dp_bridge_ops = { + .enable = dp_bridge_enable, + .disable = dp_bridge_disable, + .post_disable = dp_bridge_post_disable, + .mode_set = dp_bridge_mode_set, +}; + +struct drm_bridge *msm_dp_bridge_init(struct msm_dp *dp_display, struct drm_device *dev, + struct drm_encoder *encoder) +{ + int rc; + struct msm_dp_bridge *dp_bridge; + struct drm_bridge *bridge; + + dp_bridge = devm_kzalloc(dev->dev, sizeof(*dp_bridge), GFP_KERNEL); + if (!dp_bridge) + return ERR_PTR(-ENOMEM); + + dp_bridge->dp_display = dp_display; + + bridge = &dp_bridge->bridge; + bridge->funcs = &dp_bridge_ops; + bridge->encoder = encoder; + + rc = drm_bridge_attach(encoder, bridge, NULL, DRM_BRIDGE_ATTACH_NO_CONNECTOR); + if (rc) { + DRM_ERROR("failed to attach bridge, rc=%d\n", rc); + kfree(dp_bridge); + return ERR_PTR(rc); + } + + return bridge; +} diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h index 4bb797e..c18a959 100644 --- a/drivers/gpu/drm/msm/msm_drv.h +++ b/drivers/gpu/drm/msm/msm_drv.h @@ -388,8 +388,12 @@ int msm_dp_display_enable(struct msm_dp *dp, struct drm_encoder *encoder); int msm_dp_display_disable(struct msm_dp *dp, struct drm_encoder *encoder); int msm_dp_display_pre_disable(struct msm_dp *dp, struct drm_encoder *encoder); void msm_dp_display_mode_set(struct msm_dp *dp, struct drm_encoder *encoder, - struct drm_display_mode *mode, - struct drm_display_mode *adjusted_mode); + const struct drm_display_mode *mode, + const struct drm_display_mode *adjusted_mode); + +struct drm_bridge *msm_dp_bridge_init(struct msm_dp *dp_display, + struct drm_device *dev, + struct drm_encoder *encoder); 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);

@@ -426,8 +430,8 @@ static inline int msm_dp_display_pre_disable(struct msm_dp *dp, } static inline void msm_dp_display_mode_set(struct msm_dp *dp, struct drm_encoder *encoder, - struct drm_display_mode *mode, - struct drm_display_mode *adjusted_mode) + const struct drm_display_mode *mode, + const struct drm_display_mode *adjusted_mode) { }