diff --git a/drivers/gpu/drm/arm/display/komeda/d71/d71_dev.c b/drivers/gpu/drm/arm/display/komeda/d71/d71_dev.c
index d53f95dea0a1dcc5bff20169a93ef5fb4892ce77..7e79c2e88421fcd4229b5985169fdcc46e8f79bc 100644
--- a/drivers/gpu/drm/arm/display/komeda/d71/d71_dev.c
+++ b/drivers/gpu/drm/arm/display/komeda/d71/d71_dev.c
@@ -597,10 +597,25 @@ static const struct komeda_dev_funcs d71_chip_funcs = {
const struct komeda_dev_funcs *
d71_identify(u32 __iomem *reg_base, struct komeda_chip_info *chip)
{
+ const struct komeda_dev_funcs *funcs;
+ u32 product_id;
+
+ chip->core_id = malidp_read32(reg_base, GLB_CORE_ID);
+
+ product_id = MALIDP_CORE_ID_PRODUCT_ID(chip->core_id);
+
+ switch (product_id) {
+ case MALIDP_D71_PRODUCT_ID:
+ funcs = &d71_chip_funcs;
+ break;
+ default:
+ DRM_ERROR("Unsupported product: 0x%x\n", product_id);
+ return NULL;
+ }
+
chip->arch_id = malidp_read32(reg_base, GLB_ARCH_ID);
- chip->core_id = malidp_read32(reg_base, GLB_CORE_ID);
chip->core_info = malidp_read32(reg_base, GLB_CORE_INFO);
chip->bus_width = D71_BUS_WIDTH_16_BYTES;
- return &d71_chip_funcs;
+ return funcs;
}
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_dev.c b/drivers/gpu/drm/arm/display/komeda/komeda_dev.c
index 4e46f650fddf4bac1fafbd933ec71b9e9b7d7ee4..38b832804badbb8b2c44e1e624566447a00d181c 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_dev.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_dev.c
@@ -115,22 +115,14 @@ static struct attribute_group komeda_sysfs_attr_group = {
.attrs = komeda_sysfs_entries,
};
-static int komeda_parse_pipe_dt(struct komeda_dev *mdev, struct device_node *np)
+static int komeda_parse_pipe_dt(struct komeda_pipeline *pipe)
{
- struct komeda_pipeline *pipe;
+ struct device_node *np = pipe->of_node;
struct clk *clk;
- u32 pipe_id;
- int ret = 0;
-
- ret = of_property_read_u32(np, "reg", &pipe_id);
- if (ret != 0 || pipe_id >= mdev->n_pipelines)
- return -EINVAL;
-
- pipe = mdev->pipelines[pipe_id];
clk = of_clk_get_by_name(np, "pxclk");
if (IS_ERR(clk)) {
- DRM_ERROR("get pxclk for pipeline %d failed!\n", pipe_id);
+ DRM_ERROR("get pxclk for pipeline %d failed!\n", pipe->id);
return PTR_ERR(clk);
}
pipe->pxlclk = clk;
@@ -144,7 +136,6 @@ static int komeda_parse_pipe_dt(struct komeda_dev *mdev, struct device_node *np)
of_graph_get_port_by_id(np, KOMEDA_OF_PORT_OUTPUT);
pipe->dual_link = pipe->of_output_links[0] && pipe->of_output_links[1];
- pipe->of_node = of_node_get(np);
return 0;
}
@@ -153,7 +144,9 @@ static int komeda_parse_dt(struct device *dev, struct komeda_dev *mdev)
{
struct platform_device *pdev = to_platform_device(dev);
struct device_node *child, *np = dev->of_node;
- int ret;
+ struct komeda_pipeline *pipe;
+ u32 pipe_id = U32_MAX;
+ int ret = -1;
mdev->irq = platform_get_irq(pdev, 0);
if (mdev->irq < 0) {
@@ -168,28 +161,42 @@ static int komeda_parse_dt(struct device *dev, struct komeda_dev *mdev)
ret = 0;
for_each_available_child_of_node(np, child) {
- if (of_node_cmp(child->name, "pipeline") == 0) {
- ret = komeda_parse_pipe_dt(mdev, child);
- if (ret) {
- DRM_ERROR("parse pipeline dt error!\n");
- of_node_put(child);
- break;
+ if (of_node_name_eq(child, "pipeline")) {
+ of_property_read_u32(child, "reg", &pipe_id);
+ if (pipe_id >= mdev->n_pipelines) {
+ DRM_WARN("Skip the redundant DT node: pipeline-%u.\n",
+ pipe_id);
+ continue;
}
+ mdev->pipelines[pipe_id]->of_node = of_node_get(child);
}
}
- return ret;
+ for (pipe_id = 0; pipe_id < mdev->n_pipelines; pipe_id++) {
+ pipe = mdev->pipelines[pipe_id];
+
+ if (!pipe->of_node) {
+ DRM_ERROR("Pipeline-%d doesn't have a DT node.\n",
+ pipe->id);
+ return -EINVAL;
+ }
+ ret = komeda_parse_pipe_dt(pipe);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
}
struct komeda_dev *komeda_dev_create(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
- const struct komeda_product_data *product;
+ komeda_identify_func komeda_identify;
struct komeda_dev *mdev;
int err = 0;
- product = of_device_get_match_data(dev);
- if (!product)
+ komeda_identify = of_device_get_match_data(dev);
+ if (!komeda_identify)
return ERR_PTR(-ENODEV);
mdev = devm_kzalloc(dev, sizeof(*mdev), GFP_KERNEL);
@@ -217,11 +224,9 @@ struct komeda_dev *komeda_dev_create(struct device *dev)
clk_prepare_enable(mdev->aclk);
- mdev->funcs = product->identify(mdev->reg_base, &mdev->chip);
- if (!komeda_product_match(mdev, product->product_id)) {
- DRM_ERROR("DT configured %x mismatch with real HW %x.\n",
- product->product_id,
- MALIDP_CORE_ID_PRODUCT_ID(mdev->chip.core_id));
+ mdev->funcs = komeda_identify(mdev->reg_base, &mdev->chip);
+ if (!mdev->funcs) {
+ DRM_ERROR("Failed to identify the HW.\n");
err = -ENODEV;
goto disable_clk;
}
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_dev.h b/drivers/gpu/drm/arm/display/komeda/komeda_dev.h
index d406a4d833528914889e8acff03bab71cdfd1e9f..4a67a80d5fcf9cebf0de565a62cb80d6b62605ef 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_dev.h
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_dev.h
@@ -58,11 +58,6 @@
| KOMEDA_EVENT_MODE \
)
-/* malidp device id */
-enum {
- MALI_D71 = 0,
-};
-
/* pipeline DT ports */
enum {
KOMEDA_OF_PORT_OUTPUT = 0,
@@ -76,12 +71,6 @@ struct komeda_chip_info {
u32 bus_width;
};
-struct komeda_product_data {
- u32 product_id;
- const struct komeda_dev_funcs *(*identify)(u32 __iomem *reg,
- struct komeda_chip_info *info);
-};
-
struct komeda_dev;
struct komeda_events {
@@ -234,6 +223,9 @@ komeda_product_match(struct komeda_dev *mdev, u32 target)
return MALIDP_CORE_ID_PRODUCT_ID(mdev->chip.core_id) == target;
}
+typedef const struct komeda_dev_funcs *
+(*komeda_identify_func)(u32 __iomem *reg, struct komeda_chip_info *chip);
+
const struct komeda_dev_funcs *
d71_identify(u32 __iomem *reg, struct komeda_chip_info *chip);
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c
index d6c2222c5d3305928cd806078bcdbdacccef203c..b7a1097c45c4a5089d2b84d132061c9c552f22eb 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c
@@ -123,15 +123,8 @@ static int komeda_platform_remove(struct platform_device *pdev)
return 0;
}
-static const struct komeda_product_data komeda_products[] = {
- [MALI_D71] = {
- .product_id = MALIDP_D71_PRODUCT_ID,
- .identify = d71_identify,
- },
-};
-
static const struct of_device_id komeda_of_match[] = {
- { .compatible = "arm,mali-d71", .data = &komeda_products[MALI_D71], },
+ { .compatible = "arm,mali-d71", .data = d71_identify, },
{},
};