media: staging: tegra-vde: Factor out H.264 code

Factor out H.264 hardware programming code into separate source file in a
preparation to support V4L API by the Tegra video decoder driver.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/staging/media/tegra-vde/Makefile

 # SPDX-License-Identifier: GPL-2.0
-tegra-vde-y := vde.o iommu.o dmabuf-cache.o
+tegra-vde-y := vde.o iommu.o dmabuf-cache.o h264.o
 obj-$(CONFIG_TEGRA_VDE)	+= tegra-vde.o

drivers/staging/media/tegra-vde/vde.h

@@ -16,6 +16,15 @@
 #include <linux/mutex.h>
 #include <linux/types.h>
 
+#define ICMDQUE_WR		0x00
+#define CMDQUE_CONTROL		0x08
+#define INTR_STATUS		0x18
+#define BSE_INT_ENB		0x40
+#define BSE_CONFIG		0x44
+
+#define BSE_ICMDQUE_EMPTY	BIT(3)
+#define BSE_DMA_BUSY		BIT(23)
+
 struct clk;
 struct dma_buf;
 struct gen_pool;
@@ -23,6 +32,21 @@ struct iommu_group;
 struct iommu_domain;
 struct reset_control;
 struct dma_buf_attachment;
+struct tegra_vde_h264_frame;
+struct tegra_vde_h264_decoder_ctx;
+
+struct tegra_video_frame {
+	struct dma_buf_attachment *y_dmabuf_attachment;
+	struct dma_buf_attachment *cb_dmabuf_attachment;
+	struct dma_buf_attachment *cr_dmabuf_attachment;
+	struct dma_buf_attachment *aux_dmabuf_attachment;
+	dma_addr_t y_addr;
+	dma_addr_t cb_addr;
+	dma_addr_t cr_addr;
+	dma_addr_t aux_addr;
+	u32 frame_num;
+	u32 flags;
+};
 
 struct tegra_vde_soc {
 	bool supports_ref_pic_marking;
@@ -50,6 +74,7 @@ struct tegra_vde {
 	void __iomem *ppb;
 	void __iomem *vdma;
 	void __iomem *frameid;
+	struct device *dev;
 	struct mutex lock;
 	struct mutex map_lock;
 	struct list_head map_list;
@@ -66,10 +91,27 @@ struct tegra_vde {
 	struct iova *iova_resv_last_page;
 	const struct tegra_vde_soc *soc;
 	struct tegra_vde_bo *secure_bo;
+	dma_addr_t bitstream_data_addr;
 	dma_addr_t iram_lists_addr;
 	u32 *iram;
 };
 
+void tegra_vde_writel(struct tegra_vde *vde, u32 value, void __iomem *base,
+		      u32 offset);
+u32 tegra_vde_readl(struct tegra_vde *vde, void __iomem *base, u32 offset);
+void tegra_vde_set_bits(struct tegra_vde *vde, u32 mask, void __iomem *base,
+			u32 offset);
+
+int tegra_vde_validate_h264_frame(struct device *dev,
+				  struct tegra_vde_h264_frame *frame);
+int tegra_vde_validate_h264_ctx(struct device *dev,
+				struct tegra_vde_h264_decoder_ctx *ctx);
+int tegra_vde_decode_h264(struct tegra_vde *vde,
+			  struct tegra_vde_h264_decoder_ctx *ctx,
+			  struct tegra_video_frame *dpb_frames,
+			  dma_addr_t bitstream_data_addr,
+			  size_t bitstream_data_size);
+
 int tegra_vde_iommu_init(struct tegra_vde *vde);
 void tegra_vde_iommu_deinit(struct tegra_vde *vde);
 int tegra_vde_iommu_map(struct tegra_vde *vde,