1 files changed, 99 insertions, 0 deletions

diff --git a/drivers/gpu/drm/sun4i/sun4i_frontend.h b/drivers/gpu/drm/sun4i/sun4i_frontend.h
new file mode 100644
index 000000000000..02661ce81f3e
--- /dev/null
+++ b/drivers/gpu/drm/sun4i/sun4i_frontend.h
@@ -0,0 +1,99 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2017 Free Electrons
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ */
+
+#ifndef _SUN4I_FRONTEND_H_
+#define _SUN4I_FRONTEND_H_
+
+#include <linux/list.h>
+
+#define SUN4I_FRONTEND_EN_REG                   0x000
+#define SUN4I_FRONTEND_EN_EN                            BIT(0)
+
+#define SUN4I_FRONTEND_FRM_CTRL_REG             0x004
+#define SUN4I_FRONTEND_FRM_CTRL_COEF_ACCESS_CTRL        BIT(23)
+#define SUN4I_FRONTEND_FRM_CTRL_FRM_START               BIT(16)
+#define SUN4I_FRONTEND_FRM_CTRL_COEF_RDY                BIT(1)
+#define SUN4I_FRONTEND_FRM_CTRL_REG_RDY                 BIT(0)
+
+#define SUN4I_FRONTEND_BYPASS_REG               0x008
+#define SUN4I_FRONTEND_BYPASS_CSC_EN                    BIT(1)
+
+#define SUN4I_FRONTEND_BUF_ADDR0_REG            0x020
+
+#define SUN4I_FRONTEND_LINESTRD0_REG            0x040
+
+#define SUN4I_FRONTEND_INPUT_FMT_REG            0x04c
+#define SUN4I_FRONTEND_INPUT_FMT_DATA_MOD(mod)          ((mod) << 8)
+#define SUN4I_FRONTEND_INPUT_FMT_DATA_FMT(fmt)          ((fmt) << 4)
+#define SUN4I_FRONTEND_INPUT_FMT_PS(ps)                 (ps)
+
+#define SUN4I_FRONTEND_OUTPUT_FMT_REG           0x05c
+#define SUN4I_FRONTEND_OUTPUT_FMT_DATA_FMT(fmt)         (fmt)
+
+#define SUN4I_FRONTEND_CH0_INSIZE_REG           0x100
+#define SUN4I_FRONTEND_INSIZE(h, w)                     ((((h) - 1) << 16) | (((w) - 1)))
+
+#define SUN4I_FRONTEND_CH0_OUTSIZE_REG          0x104
+#define SUN4I_FRONTEND_OUTSIZE(h, w)                    ((((h) - 1) << 16) | (((w) - 1)))
+
+#define SUN4I_FRONTEND_CH0_HORZFACT_REG         0x108
+#define SUN4I_FRONTEND_HORZFACT(i, f)                   (((i) << 16) | (f))
+
+#define SUN4I_FRONTEND_CH0_VERTFACT_REG         0x10c
+#define SUN4I_FRONTEND_VERTFACT(i, f)                   (((i) << 16) | (f))
+
+#define SUN4I_FRONTEND_CH0_HORZPHASE_REG        0x110
+#define SUN4I_FRONTEND_CH0_VERTPHASE0_REG       0x114
+#define SUN4I_FRONTEND_CH0_VERTPHASE1_REG       0x118
+
+#define SUN4I_FRONTEND_CH1_INSIZE_REG           0x200
+#define SUN4I_FRONTEND_CH1_OUTSIZE_REG          0x204
+#define SUN4I_FRONTEND_CH1_HORZFACT_REG         0x208
+#define SUN4I_FRONTEND_CH1_VERTFACT_REG         0x20c
+
+#define SUN4I_FRONTEND_CH1_HORZPHASE_REG        0x210
+#define SUN4I_FRONTEND_CH1_VERTPHASE0_REG       0x214
+#define SUN4I_FRONTEND_CH1_VERTPHASE1_REG       0x218
+
+#define SUN4I_FRONTEND_CH0_HORZCOEF0_REG(i)     (0x400 + i * 4)
+#define SUN4I_FRONTEND_CH0_HORZCOEF1_REG(i)     (0x480 + i * 4)
+#define SUN4I_FRONTEND_CH0_VERTCOEF_REG(i)      (0x500 + i * 4)
+#define SUN4I_FRONTEND_CH1_HORZCOEF0_REG(i)     (0x600 + i * 4)
+#define SUN4I_FRONTEND_CH1_HORZCOEF1_REG(i)     (0x680 + i * 4)
+#define SUN4I_FRONTEND_CH1_VERTCOEF_REG(i)      (0x700 + i * 4)
+
+struct clk;
+struct device_node;
+struct drm_plane;
+struct regmap;
+struct reset_control;
+
+struct sun4i_frontend {
+        struct list_head        list;
+        struct device           *dev;
+        struct device_node      *node;
+
+        struct clk              *bus_clk;
+        struct clk              *mod_clk;
+        struct clk              *ram_clk;
+        struct regmap           *regs;
+        struct reset_control    *reset;
+};
+
+extern const struct of_device_id sun4i_frontend_of_table[];
+
+int sun4i_frontend_init(struct sun4i_frontend *frontend);
+void sun4i_frontend_exit(struct sun4i_frontend *frontend);
+int sun4i_frontend_enable(struct sun4i_frontend *frontend);
+
+void sun4i_frontend_update_buffer(struct sun4i_frontend *frontend,
+                                  struct drm_plane *plane);
+void sun4i_frontend_update_coord(struct sun4i_frontend *frontend,
+                                 struct drm_plane *plane);
+int sun4i_frontend_update_formats(struct sun4i_frontend *frontend,
+                                  struct drm_plane *plane, uint32_t out_fmt);
+
+#endif /* _SUN4I_FRONTEND_H_ */