[RESEND v13 20/22] drm/mediatek: add drm ovl_adaptor sub driver for MT8195

Nancy.Lin
2022-03-08T09:35:40Z

Add drm ovl_adaptor sub driver. Bring up ovl_adaptor sub driver if
the component exists in the path.

Signed-off-by: Nancy.Lin <nancy.lin@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 18 ++++------
drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 31 +++++++++++++---
drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h | 1 +
drivers/gpu/drm/mediatek/mtk_drm_drv.c | 40 ++++++++++++---------
4 files changed, 58 insertions(+), 32 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index 0cca1966b622..28a691328998 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -889,20 +889,16 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
for (i = 0; i < path_len; i++) {
enum mtk_ddp_comp_id comp_id = path[i];
struct device_node *node;
- struct mtk_ddp_comp *comp;

node = priv->comp_node[comp_id];
- comp = &priv->ddp_comp[comp_id];

- if (!node) {
- dev_info(dev,
- "Not creating crtc %d because component %d is disabled or missing\n",
- crtc_i, comp_id);
- return 0;
- }
-
- if (!comp->dev) {
- dev_err(dev, "Component %pOF not initialized\n", node);
+ /* Not all drm components have a DTS device node, such as ovl_adaptor,
+ * which is the drm bring up sub driver
+ */
+ if (!node && comp_id != DDP_COMPONENT_OVL_ADAPTOR) {
+ dev_err(dev,
+ "Not creating crtc %d because component %d is disabled, missing or not initialized\n",
+ crtc_i, comp_id);
return -ENODEV;
}
}
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
index 26d197da41c0..acc6f09da653 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
@@ -385,6 +385,19 @@ static const struct mtk_ddp_comp_funcs ddp_ufoe = {
.start = mtk_ufoe_start,
};

+static const struct mtk_ddp_comp_funcs ddp_ovl_adaptor = {
+ .clk_enable = mtk_ovl_adaptor_clk_enable,
+ .clk_disable = mtk_ovl_adaptor_clk_disable,
+ .config = mtk_ovl_adaptor_config,
+ .start = mtk_ovl_adaptor_start,
+ .stop = mtk_ovl_adaptor_stop,
+ .layer_nr = mtk_ovl_adaptor_layer_nr,
+ .layer_config = mtk_ovl_adaptor_layer_config,
+ .enable_vblank = mtk_ovl_adaptor_enable_vblank,
+ .disable_vblank = mtk_ovl_adaptor_disable_vblank,
+ .dma_dev_get = mtk_ovl_adaptor_dma_dev_get,
+};
+
static const char * const mtk_ddp_comp_stem[MTK_DDP_COMP_TYPE_MAX] = {
[MTK_DISP_AAL] = "aal",
[MTK_DISP_BLS] = "bls",
@@ -398,6 +411,7 @@ static const char * const mtk_ddp_comp_stem[MTK_DDP_COMP_TYPE_MAX] = {
[MTK_DISP_OD] = "od",
[MTK_DISP_OVL] = "ovl",
[MTK_DISP_OVL_2L] = "ovl-2l",
+ [MTK_DISP_OVL_ADAPTOR] = "ovl_adaptor",
[MTK_DISP_POSTMASK] = "postmask",
[MTK_DISP_PWM] = "pwm",
[MTK_DISP_RDMA] = "rdma",
@@ -443,6 +457,7 @@ static const struct mtk_ddp_comp_match mtk_ddp_matches[DDP_COMPONENT_ID_MAX] = {
[DDP_COMPONENT_OVL_2L0] = { MTK_DISP_OVL_2L, 0, &ddp_ovl },
[DDP_COMPONENT_OVL_2L1] = { MTK_DISP_OVL_2L, 1, &ddp_ovl },
[DDP_COMPONENT_OVL_2L2] = { MTK_DISP_OVL_2L, 2, &ddp_ovl },
+ [DDP_COMPONENT_OVL_ADAPTOR] = { MTK_DISP_OVL_ADAPTOR, 0, &ddp_ovl_adaptor },
[DDP_COMPONENT_POSTMASK0] = { MTK_DISP_POSTMASK, 0, &ddp_postmask },
[DDP_COMPONENT_PWM0] = { MTK_DISP_PWM, 0, NULL },
[DDP_COMPONENT_PWM1] = { MTK_DISP_PWM, 1, NULL },
@@ -548,12 +563,17 @@ int mtk_ddp_comp_init(struct device_node *node, struct mtk_ddp_comp *comp,

comp->id = comp_id;
comp->funcs = mtk_ddp_matches[comp_id].funcs;
- comp_pdev = of_find_device_by_node(node);
- if (!comp_pdev) {
- DRM_INFO("Waiting for device %s\n", node->full_name);
- return -EPROBE_DEFER;
+ /* Not all drm components have a DTS device node, such as ovl_adaptor,
+ * which is the drm bring up sub driver
+ */
+ if (node) {
+ comp_pdev = of_find_device_by_node(node);
+ if (!comp_pdev) {
+ DRM_INFO("Waiting for device %s\n", node->full_name);
+ return -EPROBE_DEFER;
+ }
+ comp->dev = &comp_pdev->dev;
}
- comp->dev = &comp_pdev->dev;

/* Only DMA capable components need the LARB property */
if (type == MTK_DISP_OVL ||
@@ -573,6 +593,7 @@ int mtk_ddp_comp_init(struct device_node *node, struct mtk_ddp_comp *comp,
type == MTK_DISP_MERGE ||
type == MTK_DISP_OVL ||
type == MTK_DISP_OVL_2L ||
+ type == MTK_DISP_OVL_ADAPTOR ||
type == MTK_DISP_PWM ||
type == MTK_DISP_RDMA ||
type == MTK_DPI ||
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
index 4f7fae41c916..1862eba41c45 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
@@ -30,6 +30,7 @@ enum mtk_ddp_comp_type {
MTK_DISP_OD,
MTK_DISP_OVL,
MTK_DISP_OVL_2L,
+ MTK_DISP_OVL_ADAPTOR,
MTK_DISP_POSTMASK,
MTK_DISP_PWM,
MTK_DISP_RDMA,
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
index a05703843af2..99f37f8f6639 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -351,9 +351,7 @@ static int mtk_drm_kms_init(struct drm_device *drm)
{
struct mtk_drm_private *private = drm->dev_private;
struct mtk_drm_private *priv_n;
- struct platform_device *pdev;
- struct device_node *np = NULL;
- struct device *dma_dev;
+ struct device *dma_dev = NULL;
int ret, i, j;

ret = drmm_mode_config_init(drm);
@@ -388,7 +386,6 @@ static int mtk_drm_kms_init(struct drm_device *drm)
* different drm private data structures. Loop through crtc index to
* create crtc from the main path and then ext_path and finally the
* third path.
- * 3. Use OVL device for all DMA memory allocations
*/
for (i = 0; i < MAX_CRTC; i++) {
for (j = 0; j < private->data->mmsys_dev_num; j++) {
@@ -400,9 +397,6 @@ static int mtk_drm_kms_init(struct drm_device *drm)
if (ret)
goto err_component_unbind;

- if (!np)
- np = priv_n->comp_node[priv_n->data->main_path[0]];
-
continue;
} else if (i == 1 && priv_n->data->ext_len) {
ret = mtk_drm_crtc_create(drm, priv_n->data->ext_path,
@@ -410,9 +404,6 @@ static int mtk_drm_kms_init(struct drm_device *drm)
if (ret)
goto err_component_unbind;

- if (!np)
- np = priv_n->comp_node[priv_n->data->ext_path[0]];
-
continue;
} else if (i == 2 && priv_n->data->third_len) {
ret = mtk_drm_crtc_create(drm, priv_n->data->third_path,
@@ -420,22 +411,19 @@ static int mtk_drm_kms_init(struct drm_device *drm)
if (ret)
goto err_component_unbind;

- if (!np)
- np = priv_n->comp_node[priv_n->data->third_path[0]];
-
continue;
}
}
}

- pdev = of_find_device_by_node(np);
- if (!pdev) {
+ /* Use OVL device for all DMA memory allocations */
+ dma_dev = mtk_drm_crtc_dma_dev_get(drm_crtc_from_index(drm, 0));
+ if (!dma_dev) {
ret = -ENODEV;
dev_err(drm->dev, "Need at least one OVL device\n");
goto err_component_unbind;
}

- dma_dev = &pdev->dev;
for (i = 0; i < private->data->mmsys_dev_num; i++)
private->all_drm_private[i]->dma_dev = dma_dev;

@@ -514,6 +502,11 @@ static int compare_of(struct device *dev, void *data)
return dev->of_node == data;
}

+static int compare_dev(struct device *dev, void *data)
+{
+ return dev == (struct device *)data;
+}
+
static int mtk_drm_bind(struct device *dev)
{
struct mtk_drm_private *private = dev_get_drvdata(dev);
@@ -702,6 +695,7 @@ static int mtk_drm_probe(struct platform_device *pdev)
struct mtk_drm_private *private;
struct device_node *node;
struct component_match *match = NULL;
+ struct platform_device *ovl_adaptor;
int ret;
int i;

@@ -727,6 +721,18 @@ static int mtk_drm_probe(struct platform_device *pdev)
return -ENODEV;
}

+ /* Bringup ovl_adaptor */
+ if (mtk_drm_find_mmsys_comp(private, DDP_COMPONENT_OVL_ADAPTOR)) {
+ ovl_adaptor = platform_device_register_data(dev, "mediatek-disp-ovl-adaptor",
+ PLATFORM_DEVID_AUTO,
+ (void *)private->mmsys_dev,
+ sizeof(*private->mmsys_dev));
+ private->ddp_comp[DDP_COMPONENT_OVL_ADAPTOR].dev = &ovl_adaptor->dev;
+ mtk_ddp_comp_init(NULL, &private->ddp_comp[DDP_COMPONENT_OVL_ADAPTOR],
+ DDP_COMPONENT_OVL_ADAPTOR);
+ component_match_add(dev, &match, compare_dev, &ovl_adaptor->dev);
+ }
+
/* Iterate over sibling DISP function blocks */
for_each_child_of_node(phandle->parent, node) {
const struct of_device_id *of_id;
@@ -780,6 +786,7 @@ static int mtk_drm_probe(struct platform_device *pdev)
comp_type == MTK_DISP_MERGE ||
comp_type == MTK_DISP_OVL ||
comp_type == MTK_DISP_OVL_2L ||
+ comp_type == MTK_DISP_OVL_ADAPTOR ||
comp_type == MTK_DISP_RDMA ||
comp_type == MTK_DPI ||
comp_type == MTK_DSI) {
@@ -882,6 +889,7 @@ static struct platform_driver * const mtk_drm_drivers[] = {
&mtk_disp_color_driver,
&mtk_disp_gamma_driver,
&mtk_disp_merge_driver,
+ &mtk_disp_ovl_adaptor_driver,
&mtk_disp_ovl_driver,
&mtk_disp_rdma_driver,
&mtk_dpi_driver,
--
2.18.0