1 files changed, 135 insertions, 0 deletions
diff --git a/drivers/media/platform/st/stm32/dma2d/dma2d.h b/drivers/media/platform/st/stm32/dma2d/dma2d.h
new file mode 100644
index 000000000..3f03a7ca9
--- /dev/null
+++ b/drivers/media/platform/st/stm32/dma2d/dma2d.h
@@ -0,0 +1,135 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * ST stm32 DMA2D - 2D Graphics Accelerator Driver
+ *
+ * Copyright (c) 2021 Dillon Min
+ * Dillon Min, <dillon.minfei@gmail.com>
+ *
+ * based on s5p-g2d
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * Kamil Debski, <k.debski@samsung.com>
+ */
+
+#ifndef __DMA2D_H__
+#define __DMA2D_H__
+
+#include <linux/platform_device.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ctrls.h>
+
+#define DMA2D_NAME "stm-dma2d"
+#define BUS_INFO "platform:stm-dma2d"
+enum dma2d_op_mode {
+	DMA2D_MODE_M2M,
+	DMA2D_MODE_M2M_FPC,
+	DMA2D_MODE_M2M_BLEND,
+	DMA2D_MODE_R2M
+};
+
+enum dma2d_cmode {
+	/* output pfc cmode from ARGB888 to ARGB4444 */
+	DMA2D_CMODE_ARGB8888,
+	DMA2D_CMODE_RGB888,
+	DMA2D_CMODE_RGB565,
+	DMA2D_CMODE_ARGB1555,
+	DMA2D_CMODE_ARGB4444,
+	/* bg or fg pfc cmode from L8 to A4 */
+	DMA2D_CMODE_L8,
+	DMA2D_CMODE_AL44,
+	DMA2D_CMODE_AL88,
+	DMA2D_CMODE_L4,
+	DMA2D_CMODE_A8,
+	DMA2D_CMODE_A4
+};
+
+enum dma2d_alpha_mode {
+	DMA2D_ALPHA_MODE_NO_MODIF,
+	DMA2D_ALPHA_MODE_REPLACE,
+	DMA2D_ALPHA_MODE_COMBINE
+};
+
+struct dma2d_fmt {
+	u32	fourcc;
+	int	depth;
+	enum dma2d_cmode cmode;
+};
+
+struct dma2d_frame {
+	/* Original dimensions */
+	u32	width;
+	u32	height;
+	/* Crop size */
+	u32	c_width;
+	u32	c_height;
+	/* Offset */
+	u32	o_width;
+	u32	o_height;
+	u32	bottom;
+	u32	right;
+	u16	line_offset;
+	/* Image format */
+	struct dma2d_fmt *fmt;
+	/* [0]: blue
+	 * [1]: green
+	 * [2]: red
+	 * [3]: alpha
+	 */
+	u8	a_rgb[4];
+	/*
+	 * AM[1:0] of DMA2D_FGPFCCR
+	 */
+	enum dma2d_alpha_mode a_mode;
+	u32 size;
+	unsigned int	sequence;
+};
+
+struct dma2d_ctx {
+	struct v4l2_fh fh;
+	struct dma2d_dev	*dev;
+	struct dma2d_frame	cap;
+	struct dma2d_frame	out;
+	struct dma2d_frame	bg;
+	/* fb_buf always point to bg address */
+	struct v4l2_framebuffer	fb_buf;
+	/*
+	 * MODE[17:16] of DMA2D_CR
+	 */
+	enum dma2d_op_mode	op_mode;
+	struct v4l2_ctrl_handler ctrl_handler;
+	enum v4l2_colorspace	colorspace;
+	enum v4l2_ycbcr_encoding ycbcr_enc;
+	enum v4l2_xfer_func	xfer_func;
+	enum v4l2_quantization	quant;
+};
+
+struct dma2d_dev {
+	struct v4l2_device	v4l2_dev;
+	struct v4l2_m2m_dev	*m2m_dev;
+	struct video_device	*vfd;
+	/* for device open/close etc */
+	struct mutex		mutex;
+	/* to avoid the conflict with device running and user setting
+	 * at the same time
+	 */
+	spinlock_t		ctrl_lock;
+	atomic_t		num_inst;
+	void __iomem		*regs;
+	struct clk		*gate;
+	struct dma2d_ctx	*curr;
+	int irq;
+};
+
+void dma2d_start(struct dma2d_dev *d);
+u32 dma2d_get_int(struct dma2d_dev *d);
+void dma2d_clear_int(struct dma2d_dev *d);
+void dma2d_config_out(struct dma2d_dev *d, struct dma2d_frame *frm,
+		      dma_addr_t o_addr);
+void dma2d_config_fg(struct dma2d_dev *d, struct dma2d_frame *frm,
+		     dma_addr_t f_addr);
+void dma2d_config_bg(struct dma2d_dev *d, struct dma2d_frame *frm,
+		     dma_addr_t b_addr);
+void dma2d_config_common(struct dma2d_dev *d, enum dma2d_op_mode op_mode,
+			 u16 width, u16 height);
+
+#endif /* __DMA2D_H__ */