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path: root/drivers/gpu/drm/mediatek/mtk_drm_drv.c
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Diffstat (limited to 'drivers/gpu/drm/mediatek/mtk_drm_drv.c')
-rw-r--r--drivers/gpu/drm/mediatek/mtk_drm_drv.c443
1 files changed, 381 insertions, 62 deletions
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
index 6dcb4ba2466c..a94c51a83261 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -5,17 +5,18 @@
*/
#include <linux/component.h>
-#include <linux/iommu.h>
#include <linux/module.h>
-#include <linux/of_address.h>
+#include <linux/of.h>
#include <linux/of_platform.h>
+#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/dma-mapping.h>
+#include <drm/clients/drm_client_setup.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_drv.h>
-#include <drm/drm_fbdev_generic.h>
+#include <drm/drm_fbdev_dma.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_gem.h>
#include <drm/drm_gem_framebuffer_helper.h>
@@ -24,14 +25,14 @@
#include <drm/drm_probe_helper.h>
#include <drm/drm_vblank.h>
-#include "mtk_drm_crtc.h"
-#include "mtk_drm_ddp_comp.h"
+#include "mtk_crtc.h"
+#include "mtk_ddp_comp.h"
+#include "mtk_disp_drv.h"
#include "mtk_drm_drv.h"
-#include "mtk_drm_gem.h"
+#include "mtk_gem.h"
#define DRIVER_NAME "mediatek"
#define DRIVER_DESC "Mediatek SoC DRM"
-#define DRIVER_DATE "20150513"
#define DRIVER_MAJOR 1
#define DRIVER_MINOR 0
@@ -42,14 +43,13 @@ static const struct drm_mode_config_helper_funcs mtk_drm_mode_config_helpers = {
static struct drm_framebuffer *
mtk_drm_mode_fb_create(struct drm_device *dev,
struct drm_file *file,
+ const struct drm_format_info *info,
const struct drm_mode_fb_cmd2 *cmd)
{
- const struct drm_format_info *info = drm_get_format_info(dev, cmd);
-
if (info->num_planes != 1)
return ERR_PTR(-EINVAL);
- return drm_gem_fb_create(dev, file, cmd);
+ return drm_gem_fb_create(dev, file, info, cmd);
}
static const struct drm_mode_config_funcs mtk_drm_mode_config_funcs = {
@@ -185,7 +185,11 @@ static const unsigned int mt8188_mtk_ddp_main[] = {
DDP_COMPONENT_GAMMA,
DDP_COMPONENT_POSTMASK0,
DDP_COMPONENT_DITHER0,
- DDP_COMPONENT_DP_INTF0,
+};
+
+static const struct mtk_drm_route mt8188_mtk_ddp_main_routes[] = {
+ {0, DDP_COMPONENT_DP_INTF0},
+ {0, DDP_COMPONENT_DSI0},
};
static const unsigned int mt8192_mtk_ddp_main[] = {
@@ -287,6 +291,12 @@ static const struct mtk_mmsys_driver_data mt8186_mmsys_driver_data = {
static const struct mtk_mmsys_driver_data mt8188_vdosys0_driver_data = {
.main_path = mt8188_mtk_ddp_main,
.main_len = ARRAY_SIZE(mt8188_mtk_ddp_main),
+ .conn_routes = mt8188_mtk_ddp_main_routes,
+ .num_conn_routes = ARRAY_SIZE(mt8188_mtk_ddp_main_routes),
+ .mmsys_dev_num = 2,
+ .max_width = 8191,
+ .min_width = 1,
+ .min_height = 1,
};
static const struct mtk_mmsys_driver_data mt8192_mmsys_driver_data = {
@@ -301,6 +311,9 @@ static const struct mtk_mmsys_driver_data mt8195_vdosys0_driver_data = {
.main_path = mt8195_mtk_ddp_main,
.main_len = ARRAY_SIZE(mt8195_mtk_ddp_main),
.mmsys_dev_num = 2,
+ .max_width = 8191,
+ .min_width = 1,
+ .min_height = 1,
};
static const struct mtk_mmsys_driver_data mt8195_vdosys1_driver_data = {
@@ -308,6 +321,13 @@ static const struct mtk_mmsys_driver_data mt8195_vdosys1_driver_data = {
.ext_len = ARRAY_SIZE(mt8195_mtk_ddp_ext),
.mmsys_id = 1,
.mmsys_dev_num = 2,
+ .max_width = 8191,
+ .min_width = 2, /* 2-pixel align when ethdr is bypassed */
+ .min_height = 1,
+};
+
+static const struct mtk_mmsys_driver_data mt8365_mmsys_driver_data = {
+ .mmsys_dev_num = 1,
};
static const struct of_device_id mtk_drm_of_ids[] = {
@@ -327,6 +347,8 @@ static const struct of_device_id mtk_drm_of_ids[] = {
.data = &mt8186_mmsys_driver_data},
{ .compatible = "mediatek,mt8188-vdosys0",
.data = &mt8188_vdosys0_driver_data},
+ { .compatible = "mediatek,mt8188-vdosys1",
+ .data = &mt8195_vdosys1_driver_data},
{ .compatible = "mediatek,mt8192-mmsys",
.data = &mt8192_mmsys_driver_data},
{ .compatible = "mediatek,mt8195-mmsys",
@@ -335,11 +357,13 @@ static const struct of_device_id mtk_drm_of_ids[] = {
.data = &mt8195_vdosys0_driver_data},
{ .compatible = "mediatek,mt8195-vdosys1",
.data = &mt8195_vdosys1_driver_data},
+ { .compatible = "mediatek,mt8365-mmsys",
+ .data = &mt8365_mmsys_driver_data},
{ }
};
MODULE_DEVICE_TABLE(of, mtk_drm_of_ids);
-static int mtk_drm_match(struct device *dev, void *data)
+static int mtk_drm_match(struct device *dev, const void *data)
{
if (!strncmp(dev_name(dev), "mediatek-drm", sizeof("mediatek-drm") - 1))
return true;
@@ -350,11 +374,12 @@ static bool mtk_drm_get_all_drm_priv(struct device *dev)
{
struct mtk_drm_private *drm_priv = dev_get_drvdata(dev);
struct mtk_drm_private *all_drm_priv[MAX_CRTC];
+ struct mtk_drm_private *temp_drm_priv;
struct device_node *phandle = dev->parent->of_node;
const struct of_device_id *of_id;
struct device_node *node;
struct device *drm_dev;
- int cnt = 0;
+ unsigned int cnt = 0;
int i, j;
for_each_child_of_node(phandle->parent, node) {
@@ -369,12 +394,29 @@ static bool mtk_drm_get_all_drm_priv(struct device *dev)
continue;
drm_dev = device_find_child(&pdev->dev, NULL, mtk_drm_match);
- if (!drm_dev || !dev_get_drvdata(drm_dev))
+ put_device(&pdev->dev);
+ if (!drm_dev)
+ continue;
+
+ temp_drm_priv = dev_get_drvdata(drm_dev);
+ put_device(drm_dev);
+ if (!temp_drm_priv)
continue;
- all_drm_priv[cnt] = dev_get_drvdata(drm_dev);
- if (all_drm_priv[cnt] && all_drm_priv[cnt]->mtk_drm_bound)
+ if (temp_drm_priv->data->main_len)
+ all_drm_priv[CRTC_MAIN] = temp_drm_priv;
+ else if (temp_drm_priv->data->ext_len)
+ all_drm_priv[CRTC_EXT] = temp_drm_priv;
+ else if (temp_drm_priv->data->third_len)
+ all_drm_priv[CRTC_THIRD] = temp_drm_priv;
+
+ if (temp_drm_priv->mtk_drm_bound)
cnt++;
+
+ if (cnt == MAX_CRTC) {
+ of_node_put(node);
+ break;
+ }
}
if (drm_priv->data->mmsys_dev_num == cnt) {
@@ -408,6 +450,11 @@ static bool mtk_drm_find_mmsys_comp(struct mtk_drm_private *private, int comp_id
if (drv_data->third_path[i] == comp_id)
return true;
+ if (drv_data->num_conn_routes)
+ for (i = 0; i < drv_data->num_conn_routes; i++)
+ if (drv_data->conn_routes[i].route_ddp == comp_id)
+ return true;
+
return false;
}
@@ -416,6 +463,7 @@ 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 device *dma_dev = NULL;
+ struct drm_crtc *crtc;
int ret, i, j;
if (drm_firmware_drivers_only())
@@ -423,7 +471,7 @@ static int mtk_drm_kms_init(struct drm_device *drm)
ret = drmm_mode_config_init(drm);
if (ret)
- goto put_mutex_dev;
+ return ret;
drm->mode_config.min_width = 64;
drm->mode_config.min_height = 64;
@@ -441,8 +489,11 @@ static int mtk_drm_kms_init(struct drm_device *drm)
for (i = 0; i < private->data->mmsys_dev_num; i++) {
drm->dev_private = private->all_drm_private[i];
ret = component_bind_all(private->all_drm_private[i]->dev, drm);
- if (ret)
- goto put_mutex_dev;
+ if (ret) {
+ while (--i >= 0)
+ component_unbind_all(private->all_drm_private[i]->dev, drm);
+ return ret;
+ }
}
/*
@@ -464,23 +515,34 @@ static int mtk_drm_kms_init(struct drm_device *drm)
for (j = 0; j < private->data->mmsys_dev_num; j++) {
priv_n = private->all_drm_private[j];
- if (i == 0 && priv_n->data->main_len) {
- ret = mtk_drm_crtc_create(drm, priv_n->data->main_path,
- priv_n->data->main_len, j);
+ if (priv_n->data->max_width)
+ drm->mode_config.max_width = priv_n->data->max_width;
+
+ if (priv_n->data->min_width)
+ drm->mode_config.min_width = priv_n->data->min_width;
+
+ if (priv_n->data->min_height)
+ drm->mode_config.min_height = priv_n->data->min_height;
+
+ if (i == CRTC_MAIN && priv_n->data->main_len) {
+ ret = mtk_crtc_create(drm, priv_n->data->main_path,
+ priv_n->data->main_len, j,
+ priv_n->data->conn_routes,
+ priv_n->data->num_conn_routes);
if (ret)
goto err_component_unbind;
continue;
- } else if (i == 1 && priv_n->data->ext_len) {
- ret = mtk_drm_crtc_create(drm, priv_n->data->ext_path,
- priv_n->data->ext_len, j);
+ } else if (i == CRTC_EXT && priv_n->data->ext_len) {
+ ret = mtk_crtc_create(drm, priv_n->data->ext_path,
+ priv_n->data->ext_len, j, NULL, 0);
if (ret)
goto err_component_unbind;
continue;
- } else if (i == 2 && priv_n->data->third_len) {
- ret = mtk_drm_crtc_create(drm, priv_n->data->third_path,
- priv_n->data->third_len, j);
+ } else if (i == CRTC_THIRD && priv_n->data->third_len) {
+ ret = mtk_crtc_create(drm, priv_n->data->third_path,
+ priv_n->data->third_len, j, NULL, 0);
if (ret)
goto err_component_unbind;
@@ -489,8 +551,14 @@ static int mtk_drm_kms_init(struct drm_device *drm)
}
}
+ /* IGT will check if the cursor size is configured */
+ drm->mode_config.cursor_width = 512;
+ drm->mode_config.cursor_height = 512;
+
/* Use OVL device for all DMA memory allocations */
- dma_dev = mtk_drm_crtc_dma_dev_get(drm_crtc_from_index(drm, 0));
+ crtc = drm_crtc_from_index(drm, 0);
+ if (crtc)
+ dma_dev = mtk_crtc_dma_dev_get(crtc);
if (!dma_dev) {
ret = -ENODEV;
dev_err(drm->dev, "Need at least one OVL device\n");
@@ -504,11 +572,7 @@ static int mtk_drm_kms_init(struct drm_device *drm)
* Configure the DMA segment size to make sure we get contiguous IOVA
* when importing PRIME buffers.
*/
- ret = dma_set_max_seg_size(dma_dev, UINT_MAX);
- if (ret) {
- dev_err(dma_dev, "Failed to set DMA segment size\n");
- goto err_component_unbind;
- }
+ dma_set_max_seg_size(dma_dev, UINT_MAX);
ret = drm_vblank_init(drm, MAX_CRTC);
if (ret < 0)
@@ -522,9 +586,6 @@ static int mtk_drm_kms_init(struct drm_device *drm)
err_component_unbind:
for (i = 0; i < private->data->mmsys_dev_num; i++)
component_unbind_all(private->all_drm_private[i]->dev, drm);
-put_mutex_dev:
- for (i = 0; i < private->data->mmsys_dev_num; i++)
- put_device(private->all_drm_private[i]->mutex_dev);
return ret;
}
@@ -543,8 +604,8 @@ DEFINE_DRM_GEM_FOPS(mtk_drm_fops);
* We need to override this because the device used to import the memory is
* not dev->dev, as drm_gem_prime_import() expects.
*/
-static struct drm_gem_object *mtk_drm_gem_prime_import(struct drm_device *dev,
- struct dma_buf *dma_buf)
+static struct drm_gem_object *mtk_gem_prime_import(struct drm_device *dev,
+ struct dma_buf *dma_buf)
{
struct mtk_drm_private *private = dev->dev_private;
@@ -554,18 +615,15 @@ static struct drm_gem_object *mtk_drm_gem_prime_import(struct drm_device *dev,
static const struct drm_driver mtk_drm_driver = {
.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC,
- .dumb_create = mtk_drm_gem_dumb_create,
+ .dumb_create = mtk_gem_dumb_create,
+ DRM_FBDEV_DMA_DRIVER_OPS,
- .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
- .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
- .gem_prime_import = mtk_drm_gem_prime_import,
+ .gem_prime_import = mtk_gem_prime_import,
.gem_prime_import_sg_table = mtk_gem_prime_import_sg_table,
- .gem_prime_mmap = drm_gem_prime_mmap,
.fops = &mtk_drm_fops,
.name = DRIVER_NAME,
.desc = DRIVER_DESC,
- .date = DRIVER_DATE,
.major = DRIVER_MAJOR,
.minor = DRIVER_MINOR,
};
@@ -582,9 +640,6 @@ static int mtk_drm_bind(struct device *dev)
struct drm_device *drm;
int ret, i;
- if (!iommu_present(&platform_bus_type))
- return -EPROBE_DEFER;
-
pdev = of_find_device_by_node(private->mutex_node);
if (!pdev) {
dev_err(dev, "Waiting for disp-mutex device %pOF\n",
@@ -601,8 +656,10 @@ static int mtk_drm_bind(struct device *dev)
return 0;
drm = drm_dev_alloc(&mtk_drm_driver, dev);
- if (IS_ERR(drm))
- return PTR_ERR(drm);
+ if (IS_ERR(drm)) {
+ ret = PTR_ERR(drm);
+ goto err_put_dev;
+ }
private->drm_master = true;
drm->dev_private = private;
@@ -617,7 +674,7 @@ static int mtk_drm_bind(struct device *dev)
if (ret < 0)
goto err_deinit;
- drm_fbdev_generic_setup(drm, 32);
+ drm_client_setup(drm, NULL);
return 0;
@@ -626,6 +683,10 @@ err_deinit:
err_free:
private->drm = NULL;
drm_dev_put(drm);
+ for (i = 0; i < private->data->mmsys_dev_num; i++)
+ private->all_drm_private[i]->drm = NULL;
+err_put_dev:
+ put_device(private->mutex_dev);
return ret;
}
@@ -638,6 +699,7 @@ static void mtk_drm_unbind(struct device *dev)
drm_dev_unregister(private->drm);
mtk_drm_kms_deinit(private->drm);
drm_dev_put(private->drm);
+ put_device(private->mutex_dev);
}
private->mtk_drm_bound = false;
private->drm_master = false;
@@ -682,6 +744,8 @@ static const struct of_device_id mtk_ddp_comp_dt_ids[] = {
.data = (void *)MTK_DISP_GAMMA, },
{ .compatible = "mediatek,mt8183-disp-gamma",
.data = (void *)MTK_DISP_GAMMA, },
+ { .compatible = "mediatek,mt8195-disp-gamma",
+ .data = (void *)MTK_DISP_GAMMA, },
{ .compatible = "mediatek,mt8195-disp-merge",
.data = (void *)MTK_DISP_MERGE },
{ .compatible = "mediatek,mt2701-disp-mutex",
@@ -702,6 +766,8 @@ static const struct of_device_id mtk_ddp_comp_dt_ids[] = {
.data = (void *)MTK_DISP_MUTEX },
{ .compatible = "mediatek,mt8195-disp-mutex",
.data = (void *)MTK_DISP_MUTEX },
+ { .compatible = "mediatek,mt8365-disp-mutex",
+ .data = (void *)MTK_DISP_MUTEX },
{ .compatible = "mediatek,mt8173-disp-od",
.data = (void *)MTK_DISP_OD },
{ .compatible = "mediatek,mt2701-disp-ovl",
@@ -714,6 +780,8 @@ static const struct of_device_id mtk_ddp_comp_dt_ids[] = {
.data = (void *)MTK_DISP_OVL },
{ .compatible = "mediatek,mt8192-disp-ovl",
.data = (void *)MTK_DISP_OVL },
+ { .compatible = "mediatek,mt8195-disp-ovl",
+ .data = (void *)MTK_DISP_OVL },
{ .compatible = "mediatek,mt8183-disp-ovl-2l",
.data = (void *)MTK_DISP_OVL_2L },
{ .compatible = "mediatek,mt8192-disp-ovl-2l",
@@ -756,6 +824,8 @@ static const struct of_device_id mtk_ddp_comp_dt_ids[] = {
.data = (void *)MTK_DPI },
{ .compatible = "mediatek,mt8195-dp-intf",
.data = (void *)MTK_DP_INTF },
+ { .compatible = "mediatek,mt8195-dpi",
+ .data = (void *)MTK_DPI },
{ .compatible = "mediatek,mt2701-dsi",
.data = (void *)MTK_DSI },
{ .compatible = "mediatek,mt8173-dsi",
@@ -764,15 +834,240 @@ static const struct of_device_id mtk_ddp_comp_dt_ids[] = {
.data = (void *)MTK_DSI },
{ .compatible = "mediatek,mt8186-dsi",
.data = (void *)MTK_DSI },
+ { .compatible = "mediatek,mt8188-dsi",
+ .data = (void *)MTK_DSI },
{ }
};
+static int mtk_drm_of_get_ddp_comp_type(struct device_node *node, enum mtk_ddp_comp_type *ctype)
+{
+ const struct of_device_id *of_id = of_match_node(mtk_ddp_comp_dt_ids, node);
+
+ if (!of_id)
+ return -EINVAL;
+
+ *ctype = (enum mtk_ddp_comp_type)((uintptr_t)of_id->data);
+
+ return 0;
+}
+
+static int mtk_drm_of_get_ddp_ep_cid(struct device_node *node,
+ int output_port, enum mtk_crtc_path crtc_path,
+ struct device_node **next, unsigned int *cid)
+{
+ struct device_node *ep_dev_node, *ep_out;
+ enum mtk_ddp_comp_type comp_type;
+ int ret;
+
+ ep_out = of_graph_get_endpoint_by_regs(node, output_port, crtc_path);
+ if (!ep_out)
+ return -ENOENT;
+
+ ep_dev_node = of_graph_get_remote_port_parent(ep_out);
+ of_node_put(ep_out);
+ if (!ep_dev_node)
+ return -EINVAL;
+
+ /*
+ * Pass the next node pointer regardless of failures in the later code
+ * so that if this function is called in a loop it will walk through all
+ * of the subsequent endpoints anyway.
+ */
+ *next = ep_dev_node;
+
+ if (!of_device_is_available(ep_dev_node))
+ return -ENODEV;
+
+ ret = mtk_drm_of_get_ddp_comp_type(ep_dev_node, &comp_type);
+ if (ret) {
+ if (mtk_ovl_adaptor_is_comp_present(ep_dev_node)) {
+ *cid = (unsigned int)DDP_COMPONENT_DRM_OVL_ADAPTOR;
+ return 0;
+ }
+ return ret;
+ }
+
+ ret = mtk_ddp_comp_get_id(ep_dev_node, comp_type);
+ if (ret < 0)
+ return ret;
+
+ /* All ok! Pass the Component ID to the caller. */
+ *cid = (unsigned int)ret;
+
+ return 0;
+}
+
+/**
+ * mtk_drm_of_ddp_path_build_one - Build a Display HW Pipeline for a CRTC Path
+ * @dev: The mediatek-drm device
+ * @cpath: CRTC Path relative to a VDO or MMSYS
+ * @out_path: Pointer to an array that will contain the new pipeline
+ * @out_path_len: Number of entries in the pipeline array
+ *
+ * MediaTek SoCs can use different DDP hardware pipelines (or paths) depending
+ * on the board-specific desired display configuration; this function walks
+ * through all of the output endpoints starting from a VDO or MMSYS hardware
+ * instance and builds the right pipeline as specified in device trees.
+ *
+ * Return:
+ * * %0 - Display HW Pipeline successfully built and validated
+ * * %-ENOENT - Display pipeline was not specified in device tree
+ * * %-EINVAL - Display pipeline built but validation failed
+ * * %-ENOMEM - Failure to allocate pipeline array to pass to the caller
+ */
+static int mtk_drm_of_ddp_path_build_one(struct device *dev, enum mtk_crtc_path cpath,
+ const unsigned int **out_path,
+ unsigned int *out_path_len)
+{
+ struct device_node *next = NULL, *prev, *vdo = dev->parent->of_node;
+ unsigned int temp_path[DDP_COMPONENT_DRM_ID_MAX] = { 0 };
+ unsigned int *final_ddp_path;
+ unsigned short int idx = 0;
+ bool ovl_adaptor_comp_added = false;
+ int ret;
+
+ /* Get the first entry for the temp_path array */
+ ret = mtk_drm_of_get_ddp_ep_cid(vdo, 0, cpath, &next, &temp_path[idx]);
+ if (ret) {
+ if (next && temp_path[idx] == DDP_COMPONENT_DRM_OVL_ADAPTOR) {
+ dev_dbg(dev, "Adding OVL Adaptor for %pOF\n", next);
+ ovl_adaptor_comp_added = true;
+ } else {
+ if (next)
+ dev_err(dev, "Invalid component %pOF\n", next);
+ else
+ dev_err(dev, "Cannot find first endpoint for path %d\n", cpath);
+
+ return ret;
+ }
+ }
+ idx++;
+
+ /*
+ * Walk through port outputs until we reach the last valid mediatek-drm component.
+ * To be valid, this must end with an "invalid" component that is a display node.
+ */
+ do {
+ prev = next;
+ ret = mtk_drm_of_get_ddp_ep_cid(next, 1, cpath, &next, &temp_path[idx]);
+ of_node_put(prev);
+ if (ret) {
+ of_node_put(next);
+ break;
+ }
+
+ /*
+ * If this is an OVL adaptor exclusive component and one of those
+ * was already added, don't add another instance of the generic
+ * DDP_COMPONENT_OVL_ADAPTOR, as this is used only to decide whether
+ * to probe that component master driver of which only one instance
+ * is needed and possible.
+ */
+ if (temp_path[idx] == DDP_COMPONENT_DRM_OVL_ADAPTOR) {
+ if (!ovl_adaptor_comp_added)
+ ovl_adaptor_comp_added = true;
+ else
+ idx--;
+ }
+ } while (++idx < DDP_COMPONENT_DRM_ID_MAX);
+
+ /*
+ * The device component might not be enabled: in that case, don't
+ * check the last entry and just report that the device is missing.
+ */
+ if (ret == -ENODEV)
+ return ret;
+
+ /* If the last entry is not a final display output, the configuration is wrong */
+ switch (temp_path[idx - 1]) {
+ case DDP_COMPONENT_DP_INTF0:
+ case DDP_COMPONENT_DP_INTF1:
+ case DDP_COMPONENT_DPI0:
+ case DDP_COMPONENT_DPI1:
+ case DDP_COMPONENT_DSI0:
+ case DDP_COMPONENT_DSI1:
+ case DDP_COMPONENT_DSI2:
+ case DDP_COMPONENT_DSI3:
+ break;
+ default:
+ dev_err(dev, "Invalid display hw pipeline. Last component: %d (ret=%d)\n",
+ temp_path[idx - 1], ret);
+ return -EINVAL;
+ }
+
+ final_ddp_path = devm_kmemdup(dev, temp_path, idx * sizeof(temp_path[0]), GFP_KERNEL);
+ if (!final_ddp_path)
+ return -ENOMEM;
+
+ dev_dbg(dev, "Display HW Pipeline built with %d components.\n", idx);
+
+ /* Pipeline built! */
+ *out_path = final_ddp_path;
+ *out_path_len = idx;
+
+ return 0;
+}
+
+static int mtk_drm_of_ddp_path_build(struct device *dev, struct device_node *node,
+ struct mtk_mmsys_driver_data *data)
+{
+ struct device_node *ep_node;
+ struct of_endpoint of_ep;
+ bool output_present[MAX_CRTC] = { false };
+ int ret;
+
+ for_each_endpoint_of_node(node, ep_node) {
+ ret = of_graph_parse_endpoint(ep_node, &of_ep);
+ if (ret) {
+ dev_err_probe(dev, ret, "Cannot parse endpoint\n");
+ break;
+ }
+
+ if (of_ep.id >= MAX_CRTC) {
+ ret = dev_err_probe(dev, -EINVAL,
+ "Invalid endpoint%u number\n", of_ep.port);
+ break;
+ }
+
+ output_present[of_ep.id] = true;
+ }
+
+ if (ret) {
+ of_node_put(ep_node);
+ return ret;
+ }
+
+ if (output_present[CRTC_MAIN]) {
+ ret = mtk_drm_of_ddp_path_build_one(dev, CRTC_MAIN,
+ &data->main_path, &data->main_len);
+ if (ret && ret != -ENODEV)
+ return ret;
+ }
+
+ if (output_present[CRTC_EXT]) {
+ ret = mtk_drm_of_ddp_path_build_one(dev, CRTC_EXT,
+ &data->ext_path, &data->ext_len);
+ if (ret && ret != -ENODEV)
+ return ret;
+ }
+
+ if (output_present[CRTC_THIRD]) {
+ ret = mtk_drm_of_ddp_path_build_one(dev, CRTC_THIRD,
+ &data->third_path, &data->third_len);
+ if (ret && ret != -ENODEV)
+ return ret;
+ }
+
+ return 0;
+}
+
static int mtk_drm_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *phandle = dev->parent->of_node;
const struct of_device_id *of_id;
struct mtk_drm_private *private;
+ struct mtk_mmsys_driver_data *mtk_drm_data;
struct device_node *node;
struct component_match *match = NULL;
struct platform_device *ovl_adaptor;
@@ -793,7 +1088,27 @@ static int mtk_drm_probe(struct platform_device *pdev)
if (!of_id)
return -ENODEV;
- private->data = of_id->data;
+ mtk_drm_data = (struct mtk_mmsys_driver_data *)of_id->data;
+ if (!mtk_drm_data)
+ return -EINVAL;
+
+ /* Try to build the display pipeline from devicetree graphs */
+ if (of_graph_is_present(phandle)) {
+ dev_dbg(dev, "Building display pipeline for MMSYS %u\n",
+ mtk_drm_data->mmsys_id);
+ private->data = devm_kmemdup(dev, mtk_drm_data,
+ sizeof(*mtk_drm_data), GFP_KERNEL);
+ if (!private->data)
+ return -ENOMEM;
+
+ ret = mtk_drm_of_ddp_path_build(dev, phandle, private->data);
+ if (ret)
+ return ret;
+ } else {
+ /* No devicetree graphs support: go with hardcoded paths if present */
+ dev_dbg(dev, "Using hardcoded paths for MMSYS %u\n", mtk_drm_data->mmsys_id);
+ private->data = mtk_drm_data;
+ }
private->all_drm_private = devm_kmalloc_array(dev, private->data->mmsys_dev_num,
sizeof(*private->all_drm_private),
@@ -808,19 +1123,18 @@ static int mtk_drm_probe(struct platform_device *pdev)
(void *)private->mmsys_dev,
sizeof(*private->mmsys_dev));
private->ddp_comp[DDP_COMPONENT_DRM_OVL_ADAPTOR].dev = &ovl_adaptor->dev;
- mtk_ddp_comp_init(NULL, &private->ddp_comp[DDP_COMPONENT_DRM_OVL_ADAPTOR],
+ mtk_ddp_comp_init(dev, NULL, &private->ddp_comp[DDP_COMPONENT_DRM_OVL_ADAPTOR],
DDP_COMPONENT_DRM_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;
enum mtk_ddp_comp_type comp_type;
int comp_id;
- of_id = of_match_node(mtk_ddp_comp_dt_ids, node);
- if (!of_id)
+ ret = mtk_drm_of_get_ddp_comp_type(node, &comp_type);
+ if (ret)
continue;
if (!of_device_is_available(node)) {
@@ -829,8 +1143,6 @@ static int mtk_drm_probe(struct platform_device *pdev)
continue;
}
- comp_type = (enum mtk_ddp_comp_type)of_id->data;
-
if (comp_type == MTK_DISP_MUTEX) {
int id;
@@ -877,7 +1189,7 @@ static int mtk_drm_probe(struct platform_device *pdev)
node);
}
- ret = mtk_ddp_comp_init(node, &private->ddp_comp[comp_id], comp_id);
+ ret = mtk_ddp_comp_init(dev, node, &private->ddp_comp[comp_id], comp_id);
if (ret) {
of_node_put(node);
goto err_node;
@@ -909,7 +1221,7 @@ err_node:
return ret;
}
-static int mtk_drm_remove(struct platform_device *pdev)
+static void mtk_drm_remove(struct platform_device *pdev)
{
struct mtk_drm_private *private = platform_get_drvdata(pdev);
int i;
@@ -919,8 +1231,13 @@ static int mtk_drm_remove(struct platform_device *pdev)
of_node_put(private->mutex_node);
for (i = 0; i < DDP_COMPONENT_DRM_ID_MAX; i++)
of_node_put(private->comp_node[i]);
+}
- return 0;
+static void mtk_drm_shutdown(struct platform_device *pdev)
+{
+ struct mtk_drm_private *private = platform_get_drvdata(pdev);
+
+ drm_atomic_helper_shutdown(private->drm);
}
static int mtk_drm_sys_prepare(struct device *dev)
@@ -953,7 +1270,8 @@ static const struct dev_pm_ops mtk_drm_pm_ops = {
static struct platform_driver mtk_drm_platform_driver = {
.probe = mtk_drm_probe,
- .remove = mtk_drm_remove,
+ .remove = mtk_drm_remove,
+ .shutdown = mtk_drm_shutdown,
.driver = {
.name = "mediatek-drm",
.pm = &mtk_drm_pm_ops,
@@ -974,6 +1292,7 @@ static struct platform_driver * const mtk_drm_drivers[] = {
&mtk_dsi_driver,
&mtk_ethdr_driver,
&mtk_mdp_rdma_driver,
+ &mtk_padding_driver,
};
static int __init mtk_drm_init(void)
generated by cgit (git 2.34.1) at 2025-12-25 10:24:35 +0000