Re: [PATCH v3 1/2] drm/mediatek: Add ability to support dynamic connector selection
From: AngeloGioacchino Del Regno
Date: Thu May 18 2023 - 05:29:27 EST
Il 09/05/23 17:07, Jason-JH.Lin ha scritto:
1. Move output drm connector from each ddp_path array to connector array.
2. Add dynamic select available connector flow in crtc create and enable.
Signed-off-by: Nancy Lin <nancy.lin@xxxxxxxxxxxx>
Signed-off-by: Nathan Lu <nathan.lu@xxxxxxxxxxxx>
Signed-off-by: Jason-JH.Lin <jason-jh.lin@xxxxxxxxxxxx>
---
drivers/gpu/drm/mediatek/mtk_disp_drv.h | 1 +
drivers/gpu/drm/mediatek/mtk_dpi.c | 9 ++
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 111 +++++++++++++++++++-
drivers/gpu/drm/mediatek/mtk_drm_crtc.h | 5 +-
drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 27 +++++
drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h | 8 ++
drivers/gpu/drm/mediatek/mtk_drm_drv.c | 44 ++++++--
drivers/gpu/drm/mediatek/mtk_drm_drv.h | 8 ++
8 files changed, 202 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_drv.h b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
index 2254038519e1..72c57442f965 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_drv.h
+++ b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
@@ -44,6 +44,7 @@ void mtk_dither_set_common(void __iomem *regs, struct cmdq_client_reg *cmdq_reg,
void mtk_dpi_start(struct device *dev);
void mtk_dpi_stop(struct device *dev);
+int mtk_dpi_encoder_index(struct device *dev);
void mtk_dsi_ddp_start(struct device *dev);
void mtk_dsi_ddp_stop(struct device *dev);
diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
index 948a53f1f4b3..765fc976e41f 100644
--- a/drivers/gpu/drm/mediatek/mtk_dpi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
@@ -782,6 +782,15 @@ void mtk_dpi_stop(struct device *dev)
mtk_dpi_power_off(dpi);
}
+int mtk_dpi_encoder_index(struct device *dev)
+{
+ struct mtk_dpi *dpi = dev_get_drvdata(dev);
+ int encoder_index = drm_encoder_index(&dpi->encoder);
+
+ dev_dbg(dev, "encoder index:%d", encoder_index);
+ return encoder_index;
+}
+
static int mtk_dpi_bind(struct device *dev, struct device *master, void *data)
{
struct mtk_dpi *dpi = dev_get_drvdata(dev);
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index d40142842f85..54d48932b833 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -60,8 +60,12 @@ struct mtk_drm_crtc {
struct device *mmsys_dev;
struct device *dma_dev;
struct mtk_mutex *mutex;
+ unsigned int ddp_comp_nr_ori;
+ unsigned int max_ddp_comp_nr;
unsigned int ddp_comp_nr;
struct mtk_ddp_comp **ddp_comp;
+ unsigned int conn_route_nr;
`num_conn_routes` is clearer.
+ const struct mtk_drm_route *conn_routes;
/* lock for display hardware access */
struct mutex hw_lock;
@@ -649,6 +653,84 @@ static void mtk_drm_crtc_disable_vblank(struct drm_crtc *crtc)
mtk_ddp_comp_disable_vblank(comp);
}
+static unsigned int mtk_drm_crtc_max_num_route_comp(struct mtk_drm_crtc *mtk_crtc)
+{
+ unsigned int max_num = 0;
+ unsigned int i;
+
+ if (!mtk_crtc->conn_route_nr)
+ return 0;
+
+ for (i = 0; i < mtk_crtc->conn_route_nr; i++)
+ max_num = max(mtk_crtc->conn_routes[i].route_len, max_num);
If we rename this to `num_routes` or `max_routes` it becomes a bit more
understandable.
+
+ return max_num;
+}
+
+static int mtk_drm_crtc_update_output(struct drm_crtc *crtc,
+ struct drm_atomic_state *state)
+{
+ const struct mtk_drm_route *conn_routes;
+ int crtc_index = drm_crtc_index(crtc);
+ int i;
+ struct device *dev;
+ struct drm_crtc_state *crtc_state = state->crtcs[crtc_index].new_state;
+ struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
+ struct mtk_drm_private *priv = crtc->dev->dev_private;
+ unsigned int comp_id;
+ unsigned int encoder_mask = crtc_state->encoder_mask;
+ unsigned int route_len = 0, route_index = 0;
+
+ if (!mtk_crtc->conn_route_nr)
+ return 0;
+
+ priv = priv->all_drm_private[crtc_index];
+ dev = priv->dev;
+
+ dev_dbg(dev, "connector change:%d, encoder mask0x%x for crtc%d",
+ crtc_state->connectors_changed, encoder_mask, crtc_index);
+
+ if (!crtc_state->connectors_changed)
+ return 0;
+
+ conn_routes = mtk_crtc->conn_routes;
+
+ for (i = 0; i < mtk_crtc->conn_route_nr; i++) {
+ route_len = conn_routes[i].route_len;
+ if (route_len > 0) {
route_len is unsigned, it can never be < 0, so...
if (route_len) {
+ comp_id = conn_routes[i].route_ddp[route_len - 1];
+ if (priv->comp_node[comp_id]) {
+ if ((1 << priv->ddp_comp[comp_id].encoder_index) == encoder_mask) {
This is effectively BIT().
if (encoder_mask == BIT(priv->ddp_comp[comp_id].encoder_index)) {
P.S.: Are you sure that this shouldn't be (encoder_mask & BIT(encoder_index))??
+ route_index = i;
+ break;
+ }
+ }
+ }
+ }
+
..snip..
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.h b/drivers/gpu/drm/mediatek/mtk_drm_crtc.h
index 3e9046993d09..672b9c7afee6 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.h
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.h
@@ -8,6 +8,7 @@
#include <drm/drm_crtc.h>
#include "mtk_drm_ddp_comp.h"
+#include "mtk_drm_drv.h"
#include "mtk_drm_plane.h"
#define MTK_LUT_SIZE 512
@@ -18,7 +19,9 @@ void mtk_drm_crtc_commit(struct drm_crtc *crtc);
int mtk_drm_crtc_create(struct drm_device *drm_dev,
const unsigned int *path,
unsigned int path_len,
- int priv_data_index);
+ int priv_data_index,
+ const struct mtk_drm_route *conn_routes,
+ unsigned int conn_routes_num);
num_conn_routes looks better.
int mtk_drm_crtc_plane_check(struct drm_crtc *crtc, struct drm_plane *plane,
struct mtk_plane_state *state);
void mtk_drm_crtc_async_update(struct drm_crtc *crtc, struct drm_plane *plane,
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
index f114da4d36a9..fe20ce26b19f 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
..snip..
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
index febcaeef16a1..1c1d670cfe41 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
@@ -80,6 +80,7 @@ struct mtk_ddp_comp_funcs {
void (*disconnect)(struct device *dev, struct device *mmsys_dev, unsigned int next);
void (*add)(struct device *dev, struct mtk_mutex *mutex);
void (*remove)(struct device *dev, struct mtk_mutex *mutex);
+ int (*encoder_index)(struct device *dev);
drm_encoder_index returns an unsigned int type, so this one can never be negative:
please change the return value of this function to unsigned int type.
};
struct mtk_ddp_comp {
@@ -87,6 +88,7 @@ struct mtk_ddp_comp {
int irq;
unsigned int id;
const struct mtk_ddp_comp_funcs *funcs;
+ int encoder_index;
Same here, unsigned int.
};
static inline int mtk_ddp_comp_clk_enable(struct mtk_ddp_comp *comp)
Regards,
Angelo