new file mode 100644
@@ -0,0 +1,27 @@
+* Samsung Multi Format Codec (MFC)
+
+Mult Format Codec (MFC) is the IP present in Samsung SoCs which
+supports high resolution decoding and encoding functionalities.
+The MFC device driver is a v4l2 driver which can encode/decode
+video raw/elementary streams and has support for all popular
+video codecs.
+
+Required properties:
+ - compatible : value should be either one among the following
+ (a) "samsung,mfc-v5" for MFC v5 present in Exynos4 SoCs
+ (b) "samsung,mfc-v6" for MFC v6 present in Exynos5 SoCs
+
+ - reg : Physical base address of the IP registers and length of memory
+ mapped region.
+
+ - interrupts : MFC interupt number to the CPU.
+
+ - samsung,mfc-r : Base address of the first memory bank used by MFC
+ for DMA contiguous memory allocation.
+
+ - samsung,mfc-r-size : Size of the first memory bank.
+
+ - samsung,mfc-l : Base address of the second memory bank used by MFC
+ for DMA contiguous memory allocation.
+
+ - samsung,mfc-l-size : Size of the second memory bank.
@@ -957,6 +957,8 @@ static int match_child(struct device *dev, void *data)
return !strcmp(dev_name(dev), (char *)data);
}
+static void *mfc_get_drv_data(struct platform_device *pdev);
+
/* MFC probe function */
static int s5p_mfc_probe(struct platform_device *pdev)
{
@@ -964,6 +966,8 @@ static int s5p_mfc_probe(struct platform_device *pdev)
struct video_device *vfd;
struct resource *res;
int ret;
+ unsigned int base_addr;
+ unsigned int bank_size;
pr_debug("%s++\n", __func__);
dev = devm_kzalloc(&pdev->dev, sizeof *dev, GFP_KERNEL);
@@ -980,8 +984,7 @@ static int s5p_mfc_probe(struct platform_device *pdev)
return -ENODEV;
}
- dev->variant = (struct s5p_mfc_variant *)
- platform_get_device_id(pdev)->driver_data;
+ dev->variant = mfc_get_drv_data(pdev);
ret = s5p_mfc_init_pm(dev);
if (ret < 0) {
@@ -1011,20 +1014,59 @@ static int s5p_mfc_probe(struct platform_device *pdev)
goto err_res;
}
- dev->mem_dev_l = device_find_child(&dev->plat_dev->dev, "s5p-mfc-l",
- match_child);
- if (!dev->mem_dev_l) {
- mfc_err("Mem child (L) device get failed\n");
- ret = -ENODEV;
- goto err_res;
- }
+ if (pdev->dev.of_node) {
+ dev->mem_dev_l = kzalloc(sizeof(struct device), GFP_KERNEL);
+ if (!dev->mem_dev_l) {
+ mfc_err("Not enough memory\n");
+ ret = -ENOMEM;
+ goto err_res;
+ }
+ of_property_read_u32(pdev->dev.of_node, "samsung,mfc-l",
+ &base_addr);
+ of_property_read_u32(pdev->dev.of_node, "samsung,mfc-l-size",
+ &bank_size);
+ if (dma_declare_coherent_memory(dev->mem_dev_l, base_addr,
+ base_addr, bank_size,
+ DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE) == 0) {
+ mfc_err("Failed to declare coherent memory for\n"
+ "MFC device\n");
+ ret = -ENOMEM;
+ goto err_res;
+ }
- dev->mem_dev_r = device_find_child(&dev->plat_dev->dev, "s5p-mfc-r",
- match_child);
- if (!dev->mem_dev_r) {
- mfc_err("Mem child (R) device get failed\n");
- ret = -ENODEV;
- goto err_res;
+ dev->mem_dev_r = kzalloc(sizeof(struct device), GFP_KERNEL);
+ if (!dev->mem_dev_r) {
+ mfc_err("Not enough memory\n");
+ ret = -ENOMEM;
+ goto err_res;
+ }
+ of_property_read_u32(pdev->dev.of_node, "samsung,mfc-r",
+ &base_addr);
+ of_property_read_u32(pdev->dev.of_node, "samsung,mfc-r-size",
+ &bank_size);
+ if (dma_declare_coherent_memory(dev->mem_dev_r, base_addr,
+ base_addr, bank_size,
+ DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE) == 0) {
+ pr_err("Failed to declare coherent memory for\n"
+ "MFC device\n");
+ ret = -ENOMEM;
+ goto err_res;
+ }
+ } else {
+ dev->mem_dev_l = device_find_child(&dev->plat_dev->dev,
+ "s5p-mfc-l", match_child);
+ if (!dev->mem_dev_l) {
+ mfc_err("Mem child (L) device get failed\n");
+ ret = -ENODEV;
+ goto err_res;
+ }
+ dev->mem_dev_r = device_find_child(&dev->plat_dev->dev,
+ "s5p-mfc-r", match_child);
+ if (!dev->mem_dev_r) {
+ mfc_err("Mem child (R) device get failed\n");
+ ret = -ENODEV;
+ goto err_res;
+ }
}
dev->alloc_ctx[0] = vb2_dma_contig_init_ctx(dev->mem_dev_l);
@@ -1293,6 +1335,35 @@ static struct platform_device_id mfc_driver_ids[] = {
};
MODULE_DEVICE_TABLE(platform, mfc_driver_ids);
+static const struct of_device_id exynos_mfc_match[] = {
+ {
+ .compatible = "samsung,mfc-v5",
+ .data = &mfc_drvdata_v5,
+ }, {
+ .compatible = "samsung,mfc-v6",
+ .data = &mfc_drvdata_v6,
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, exynos_mfc_match);
+
+static void *mfc_get_drv_data(struct platform_device *pdev)
+{
+ struct s5p_mfc_variant *driver_data = NULL;
+
+ if (pdev->dev.of_node) {
+ const struct of_device_id *match;
+ match = of_match_node(of_match_ptr(exynos_mfc_match),
+ pdev->dev.of_node);
+ if (match)
+ driver_data = match->data;
+ } else {
+ driver_data = (struct s5p_mfc_variant *)
+ platform_get_device_id(pdev)->driver_data;
+ }
+ return driver_data;
+}
+
static struct platform_driver s5p_mfc_driver = {
.probe = s5p_mfc_probe,
.remove = __devexit_p(s5p_mfc_remove),
@@ -1300,7 +1371,8 @@ static struct platform_driver s5p_mfc_driver = {
.driver = {
.name = S5P_MFC_NAME,
.owner = THIS_MODULE,
- .pm = &s5p_mfc_pm_ops
+ .pm = &s5p_mfc_pm_ops,
+ .of_match_table = exynos_mfc_match,
},
};
This patch will add the device tree support for MFC driver. Signed-off-by: Arun Kumar K <arun.kk@samsung.com> --- .../devicetree/bindings/media/s5p-mfc.txt | 27 +++++ drivers/media/platform/s5p-mfc/s5p_mfc.c | 104 +++++++++++++++++--- 2 files changed, 115 insertions(+), 16 deletions(-) create mode 100644 Documentation/devicetree/bindings/media/s5p-mfc.txt