1 /*
2 * Samsung S5P G2D - 2D Graphics Accelerator Driver
3 *
4 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
5 * Kamil Debski, <k.debski@samsung.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the
10 * License, or (at your option) any later version
11 */
12
13 #include <linux/io.h>
14
15 #include "g2d.h"
16 #include "g2d-regs.h"
17
18 #define w(x, a) writel((x), d->regs + (a))
19 #define r(a) readl(d->regs + (a))
20
21 /* g2d_reset clears all g2d registers */
g2d_reset(struct g2d_dev * d)22 void g2d_reset(struct g2d_dev *d)
23 {
24 w(1, SOFT_RESET_REG);
25 }
26
g2d_set_src_size(struct g2d_dev * d,struct g2d_frame * f)27 void g2d_set_src_size(struct g2d_dev *d, struct g2d_frame *f)
28 {
29 u32 n;
30
31 w(f->stride & 0xFFFF, SRC_STRIDE_REG);
32
33 n = f->o_height & 0xFFF;
34 n <<= 16;
35 n |= f->o_width & 0xFFF;
36 w(n, SRC_LEFT_TOP_REG);
37
38 n = f->bottom & 0xFFF;
39 n <<= 16;
40 n |= f->right & 0xFFF;
41 w(n, SRC_RIGHT_BOTTOM_REG);
42
43 w(f->fmt->hw, SRC_COLOR_MODE_REG);
44 }
45
g2d_set_src_addr(struct g2d_dev * d,dma_addr_t a)46 void g2d_set_src_addr(struct g2d_dev *d, dma_addr_t a)
47 {
48 w(a, SRC_BASE_ADDR_REG);
49 }
50
g2d_set_dst_size(struct g2d_dev * d,struct g2d_frame * f)51 void g2d_set_dst_size(struct g2d_dev *d, struct g2d_frame *f)
52 {
53 u32 n;
54
55 w(f->stride & 0xFFFF, DST_STRIDE_REG);
56
57 n = f->o_height & 0xFFF;
58 n <<= 16;
59 n |= f->o_width & 0xFFF;
60 w(n, DST_LEFT_TOP_REG);
61
62 n = f->bottom & 0xFFF;
63 n <<= 16;
64 n |= f->right & 0xFFF;
65 w(n, DST_RIGHT_BOTTOM_REG);
66
67 w(f->fmt->hw, DST_COLOR_MODE_REG);
68 }
69
g2d_set_dst_addr(struct g2d_dev * d,dma_addr_t a)70 void g2d_set_dst_addr(struct g2d_dev *d, dma_addr_t a)
71 {
72 w(a, DST_BASE_ADDR_REG);
73 }
74
g2d_set_rop4(struct g2d_dev * d,u32 r)75 void g2d_set_rop4(struct g2d_dev *d, u32 r)
76 {
77 w(r, ROP4_REG);
78 }
79
g2d_cmd_stretch(u32 e)80 u32 g2d_cmd_stretch(u32 e)
81 {
82 e &= 1;
83 return e << 4;
84 }
85
g2d_set_cmd(struct g2d_dev * d,u32 c)86 void g2d_set_cmd(struct g2d_dev *d, u32 c)
87 {
88 w(c, BITBLT_COMMAND_REG);
89 }
90
g2d_start(struct g2d_dev * d)91 void g2d_start(struct g2d_dev *d)
92 {
93 /* Clear cache */
94 w(0x7, CACHECTL_REG);
95 /* Enable interrupt */
96 w(1, INTEN_REG);
97 /* Start G2D engine */
98 w(1, BITBLT_START_REG);
99 }
100
g2d_clear_int(struct g2d_dev * d)101 void g2d_clear_int(struct g2d_dev *d)
102 {
103 w(1, INTC_PEND_REG);
104 }
105