1 files changed, 104 insertions, 0 deletions

diff --git a/drivers/media/video/s5p-g2d/g2d-hw.c b/drivers/media/video/s5p-g2d/g2d-hw.c
new file mode 100644
index 00000000000..39937cf03c8
--- /dev/null
+++ b/drivers/media/video/s5p-g2d/g2d-hw.c
@@ -0,0 +1,104 @@
+/*
+ * Samsung S5P G2D - 2D Graphics Accelerator Driver
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * Kamil Debski, <k.debski@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version
+ */
+
+#include <linux/io.h>
+
+#include "g2d.h"
+#include "g2d-regs.h"
+
+#define w(x, a) writel((x), d->regs + (a))
+#define r(a)    readl(d->regs + (a))
+
+/* g2d_reset clears all g2d registers */
+void g2d_reset(struct g2d_dev *d)
+{
+        w(1, SOFT_RESET_REG);
+}
+
+void g2d_set_src_size(struct g2d_dev *d, struct g2d_frame *f)
+{
+        u32 n;
+
+        w(f->stride & 0xFFFF, SRC_STRIDE_REG);
+
+        n = f->o_height & 0xFFF;
+        n <<= 16;
+        n |= f->o_width & 0xFFF;
+        w(n, SRC_LEFT_TOP_REG);
+
+        n = f->bottom & 0xFFF;
+        n <<= 16;
+        n |= f->right & 0xFFF;
+        w(n, SRC_RIGHT_BOTTOM_REG);
+
+        w(f->fmt->hw, SRC_COLOR_MODE_REG);
+}
+
+void g2d_set_src_addr(struct g2d_dev *d, dma_addr_t a)
+{
+        w(a, SRC_BASE_ADDR_REG);
+}
+
+void g2d_set_dst_size(struct g2d_dev *d, struct g2d_frame *f)
+{
+        u32 n;
+
+        w(f->stride & 0xFFFF, DST_STRIDE_REG);
+
+        n = f->o_height & 0xFFF;
+        n <<= 16;
+        n |= f->o_width & 0xFFF;
+        w(n, DST_LEFT_TOP_REG);
+
+        n = f->bottom & 0xFFF;
+        n <<= 16;
+        n |= f->right & 0xFFF;
+        w(n, DST_RIGHT_BOTTOM_REG);
+
+        w(f->fmt->hw, DST_COLOR_MODE_REG);
+}
+
+void g2d_set_dst_addr(struct g2d_dev *d, dma_addr_t a)
+{
+        w(a, DST_BASE_ADDR_REG);
+}
+
+void g2d_set_rop4(struct g2d_dev *d, u32 r)
+{
+        w(r, ROP4_REG);
+}
+
+u32 g2d_cmd_stretch(u32 e)
+{
+        e &= 1;
+        return e << 4;
+}
+
+void g2d_set_cmd(struct g2d_dev *d, u32 c)
+{
+        w(c, BITBLT_COMMAND_REG);
+}
+
+void g2d_start(struct g2d_dev *d)
+{
+        /* Clear cache */
+        w(0x7, CACHECTL_REG);
+        /* Enable interrupt */
+        w(1, INTEN_REG);
+        /* Start G2D engine */
+        w(1, BITBLT_START_REG);
+}
+
+void g2d_clear_int(struct g2d_dev *d)
+{
+        w(1, INTC_PEND_REG);
+}