| Message ID | 20191205092749.4021-8-bibby.hsieh@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/mediatek: fix cursor issue and apply CMDQ in MTK DRM | expand |
Hi, Bibby: On Thu, 2019-12-05 at 17:27 +0800, Bibby Hsieh wrote: > Unlike other SoCs, MT8183 does not have "shadow" > registers for performaing an atomic video mode > set or page flip at vblank/vsync. > > The CMDQ (Commend Queue) in MT8183 is used to help > update all relevant display controller registers > with critical time limation. Reviewed-by: CK Hu <ck.hu@mediatek.com> > > Signed-off-by: YT Shen <yt.shen@mediatek.com> > Signed-off-by: CK Hu <ck.hu@mediatek.com> > Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> > Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com> > Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com> > --- > drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 56 +++++++++++++++++++++---- > 1 file changed, 49 insertions(+), 7 deletions(-) > > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c > index 8c6231ed6f55..496dffe962af 100644 > --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c > +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c > @@ -12,6 +12,8 @@ > #include <drm/drm_plane_helper.h> > #include <drm/drm_probe_helper.h> > #include <drm/drm_vblank.h> > +#include <linux/of_address.h> > +#include <linux/soc/mediatek/mtk-cmdq.h> > > #include "mtk_drm_drv.h" > #include "mtk_drm_crtc.h" > @@ -43,6 +45,9 @@ struct mtk_drm_crtc { > bool pending_planes; > bool pending_async_planes; > > + struct cmdq_client *cmdq_client; > + u32 cmdq_event; > + > void __iomem *config_regs; > const struct mtk_mmsys_reg_data *mmsys_reg_data; > struct mtk_disp_mutex *mutex; > @@ -234,6 +239,13 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc, > return NULL; > } > > +#ifdef CONFIG_MTK_CMDQ > +static void ddp_cmdq_cb(struct cmdq_cb_data data) > +{ > + cmdq_pkt_destroy(data.data); > +} > +#endif > + > static int mtk_crtc_ddp_hw_init(struct mtk_drm_crtc *mtk_crtc) > { > struct drm_crtc *crtc = &mtk_crtc->base; > @@ -378,7 +390,8 @@ static void mtk_crtc_ddp_hw_fini(struct mtk_drm_crtc *mtk_crtc) > } > } > > -static void mtk_crtc_ddp_config(struct drm_crtc *crtc) > +static void mtk_crtc_ddp_config(struct drm_crtc *crtc, > + struct cmdq_pkt *cmdq_handle) > { > struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc); > struct mtk_crtc_state *state = to_mtk_crtc_state(mtk_crtc->base.state); > @@ -394,7 +407,8 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc) > if (state->pending_config) { > mtk_ddp_comp_config(comp, state->pending_width, > state->pending_height, > - state->pending_vrefresh, 0, NULL); > + state->pending_vrefresh, 0, > + cmdq_handle); > > state->pending_config = false; > } > @@ -414,7 +428,8 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc) > > if (comp) > mtk_ddp_comp_layer_config(comp, local_layer, > - plane_state, NULL); > + plane_state, > + cmdq_handle); > plane_state->pending.config = false; > } > mtk_crtc->pending_planes = false; > @@ -435,7 +450,8 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc) > > if (comp) > mtk_ddp_comp_layer_config(comp, local_layer, > - plane_state, NULL); > + plane_state, > + cmdq_handle); > plane_state->pending.async_config = false; > } > mtk_crtc->pending_async_planes = false; > @@ -444,6 +460,7 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc) > > static void mtk_drm_crtc_hw_config(struct mtk_drm_crtc *mtk_crtc) > { > + struct cmdq_pkt *cmdq_handle; > struct drm_crtc *crtc = &mtk_crtc->base; > struct mtk_drm_private *priv = crtc->dev->dev_private; > unsigned int pending_planes = 0, pending_async_planes = 0; > @@ -472,9 +489,18 @@ static void mtk_drm_crtc_hw_config(struct mtk_drm_crtc *mtk_crtc) > > if (priv->data->shadow_register) { > mtk_disp_mutex_acquire(mtk_crtc->mutex); > - mtk_crtc_ddp_config(crtc); > + mtk_crtc_ddp_config(crtc, NULL); > mtk_disp_mutex_release(mtk_crtc->mutex); > } > +#ifdef CONFIG_MTK_CMDQ > + if (mtk_crtc->cmdq_client) { > + cmdq_handle = cmdq_pkt_create(mtk_crtc->cmdq_client, PAGE_SIZE); > + cmdq_pkt_clear_event(cmdq_handle, mtk_crtc->cmdq_event); > + cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event); > + mtk_crtc_ddp_config(crtc, cmdq_handle); > + cmdq_pkt_flush_async(cmdq_handle, ddp_cmdq_cb, cmdq_handle); > + } > +#endif > mutex_unlock(&mtk_crtc->hw_lock); > } > > @@ -643,8 +669,8 @@ void mtk_crtc_ddp_irq(struct drm_crtc *crtc, struct mtk_ddp_comp *comp) > struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc); > struct mtk_drm_private *priv = crtc->dev->dev_private; > > - if (!priv->data->shadow_register) > - mtk_crtc_ddp_config(crtc); > + if (!priv->data->shadow_register && !mtk_crtc->cmdq_client) > + mtk_crtc_ddp_config(crtc, NULL); > > mtk_drm_finish_page_flip(mtk_crtc); > } > @@ -787,5 +813,21 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev, > priv->num_pipes++; > mutex_init(&mtk_crtc->hw_lock); > > +#ifdef CONFIG_MTK_CMDQ > + mtk_crtc->cmdq_client = > + cmdq_mbox_create(dev, drm_crtc_index(&mtk_crtc->base), > + 2000); > + if (IS_ERR(mtk_crtc->cmdq_client)) { > + dev_dbg(dev, "mtk_crtc %d failed to create mailbox client, writing register by CPU now\n", > + drm_crtc_index(&mtk_crtc->base)); > + mtk_crtc->cmdq_client = NULL; > + } > + ret = of_property_read_u32_index(dev->of_node, "mediatek,gce-events", > + drm_crtc_index(&mtk_crtc->base), > + &mtk_crtc->cmdq_event); > + if (ret) > + dev_dbg(dev, "mtk_crtc %d failed to get mediatek,gce-events property\n", > + drm_crtc_index(&mtk_crtc->base)); > +#endif > return 0; > }
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c index 8c6231ed6f55..496dffe962af 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c @@ -12,6 +12,8 @@ #include <drm/drm_plane_helper.h> #include <drm/drm_probe_helper.h> #include <drm/drm_vblank.h> +#include <linux/of_address.h> +#include <linux/soc/mediatek/mtk-cmdq.h> #include "mtk_drm_drv.h" #include "mtk_drm_crtc.h" @@ -43,6 +45,9 @@ struct mtk_drm_crtc { bool pending_planes; bool pending_async_planes; + struct cmdq_client *cmdq_client; + u32 cmdq_event; + void __iomem *config_regs; const struct mtk_mmsys_reg_data *mmsys_reg_data; struct mtk_disp_mutex *mutex; @@ -234,6 +239,13 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc, return NULL; } +#ifdef CONFIG_MTK_CMDQ +static void ddp_cmdq_cb(struct cmdq_cb_data data) +{ + cmdq_pkt_destroy(data.data); +} +#endif + static int mtk_crtc_ddp_hw_init(struct mtk_drm_crtc *mtk_crtc) { struct drm_crtc *crtc = &mtk_crtc->base; @@ -378,7 +390,8 @@ static void mtk_crtc_ddp_hw_fini(struct mtk_drm_crtc *mtk_crtc) } } -static void mtk_crtc_ddp_config(struct drm_crtc *crtc) +static void mtk_crtc_ddp_config(struct drm_crtc *crtc, + struct cmdq_pkt *cmdq_handle) { struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc); struct mtk_crtc_state *state = to_mtk_crtc_state(mtk_crtc->base.state); @@ -394,7 +407,8 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc) if (state->pending_config) { mtk_ddp_comp_config(comp, state->pending_width, state->pending_height, - state->pending_vrefresh, 0, NULL); + state->pending_vrefresh, 0, + cmdq_handle); state->pending_config = false; } @@ -414,7 +428,8 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc) if (comp) mtk_ddp_comp_layer_config(comp, local_layer, - plane_state, NULL); + plane_state, + cmdq_handle); plane_state->pending.config = false; } mtk_crtc->pending_planes = false; @@ -435,7 +450,8 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc) if (comp) mtk_ddp_comp_layer_config(comp, local_layer, - plane_state, NULL); + plane_state, + cmdq_handle); plane_state->pending.async_config = false; } mtk_crtc->pending_async_planes = false; @@ -444,6 +460,7 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc) static void mtk_drm_crtc_hw_config(struct mtk_drm_crtc *mtk_crtc) { + struct cmdq_pkt *cmdq_handle; struct drm_crtc *crtc = &mtk_crtc->base; struct mtk_drm_private *priv = crtc->dev->dev_private; unsigned int pending_planes = 0, pending_async_planes = 0; @@ -472,9 +489,18 @@ static void mtk_drm_crtc_hw_config(struct mtk_drm_crtc *mtk_crtc) if (priv->data->shadow_register) { mtk_disp_mutex_acquire(mtk_crtc->mutex); - mtk_crtc_ddp_config(crtc); + mtk_crtc_ddp_config(crtc, NULL); mtk_disp_mutex_release(mtk_crtc->mutex); } +#ifdef CONFIG_MTK_CMDQ + if (mtk_crtc->cmdq_client) { + cmdq_handle = cmdq_pkt_create(mtk_crtc->cmdq_client, PAGE_SIZE); + cmdq_pkt_clear_event(cmdq_handle, mtk_crtc->cmdq_event); + cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event); + mtk_crtc_ddp_config(crtc, cmdq_handle); + cmdq_pkt_flush_async(cmdq_handle, ddp_cmdq_cb, cmdq_handle); + } +#endif mutex_unlock(&mtk_crtc->hw_lock); } @@ -643,8 +669,8 @@ void mtk_crtc_ddp_irq(struct drm_crtc *crtc, struct mtk_ddp_comp *comp) struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc); struct mtk_drm_private *priv = crtc->dev->dev_private; - if (!priv->data->shadow_register) - mtk_crtc_ddp_config(crtc); + if (!priv->data->shadow_register && !mtk_crtc->cmdq_client) + mtk_crtc_ddp_config(crtc, NULL); mtk_drm_finish_page_flip(mtk_crtc); } @@ -787,5 +813,21 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev, priv->num_pipes++; mutex_init(&mtk_crtc->hw_lock); +#ifdef CONFIG_MTK_CMDQ + mtk_crtc->cmdq_client = + cmdq_mbox_create(dev, drm_crtc_index(&mtk_crtc->base), + 2000); + if (IS_ERR(mtk_crtc->cmdq_client)) { + dev_dbg(dev, "mtk_crtc %d failed to create mailbox client, writing register by CPU now\n", + drm_crtc_index(&mtk_crtc->base)); + mtk_crtc->cmdq_client = NULL; + } + ret = of_property_read_u32_index(dev->of_node, "mediatek,gce-events", + drm_crtc_index(&mtk_crtc->base), + &mtk_crtc->cmdq_event); + if (ret) + dev_dbg(dev, "mtk_crtc %d failed to get mediatek,gce-events property\n", + drm_crtc_index(&mtk_crtc->base)); +#endif return 0; }