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91884734 KD |
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 */ | |
22 | void g2d_reset(struct g2d_dev *d) | |
23 | { | |
24 | w(1, SOFT_RESET_REG); | |
25 | } | |
26 | ||
27 | void g2d_set_src_size(struct g2d_dev *d, struct g2d_frame *f) | |
28 | { | |
29 | u32 n; | |
91884734 | 30 | |
62ce272d | 31 | w(0, SRC_SELECT_REG); |
91884734 KD |
32 | w(f->stride & 0xFFFF, SRC_STRIDE_REG); |
33 | ||
34 | n = f->o_height & 0xFFF; | |
35 | n <<= 16; | |
36 | n |= f->o_width & 0xFFF; | |
37 | w(n, SRC_LEFT_TOP_REG); | |
38 | ||
39 | n = f->bottom & 0xFFF; | |
40 | n <<= 16; | |
41 | n |= f->right & 0xFFF; | |
42 | w(n, SRC_RIGHT_BOTTOM_REG); | |
43 | ||
44 | w(f->fmt->hw, SRC_COLOR_MODE_REG); | |
45 | } | |
46 | ||
47 | void g2d_set_src_addr(struct g2d_dev *d, dma_addr_t a) | |
48 | { | |
49 | w(a, SRC_BASE_ADDR_REG); | |
50 | } | |
51 | ||
52 | void g2d_set_dst_size(struct g2d_dev *d, struct g2d_frame *f) | |
53 | { | |
54 | u32 n; | |
91884734 | 55 | |
62ce272d | 56 | w(0, DST_SELECT_REG); |
91884734 KD |
57 | w(f->stride & 0xFFFF, DST_STRIDE_REG); |
58 | ||
59 | n = f->o_height & 0xFFF; | |
60 | n <<= 16; | |
61 | n |= f->o_width & 0xFFF; | |
62 | w(n, DST_LEFT_TOP_REG); | |
63 | ||
64 | n = f->bottom & 0xFFF; | |
65 | n <<= 16; | |
66 | n |= f->right & 0xFFF; | |
67 | w(n, DST_RIGHT_BOTTOM_REG); | |
68 | ||
69 | w(f->fmt->hw, DST_COLOR_MODE_REG); | |
70 | } | |
71 | ||
72 | void g2d_set_dst_addr(struct g2d_dev *d, dma_addr_t a) | |
73 | { | |
74 | w(a, DST_BASE_ADDR_REG); | |
75 | } | |
76 | ||
77 | void g2d_set_rop4(struct g2d_dev *d, u32 r) | |
78 | { | |
79 | w(r, ROP4_REG); | |
80 | } | |
81 | ||
d0d28326 SK |
82 | void g2d_set_flip(struct g2d_dev *d, u32 r) |
83 | { | |
84 | w(r, SRC_MSK_DIRECT_REG); | |
85 | } | |
86 | ||
62ce272d SK |
87 | void g2d_set_v41_stretch(struct g2d_dev *d, struct g2d_frame *src, |
88 | struct g2d_frame *dst) | |
91884734 | 89 | { |
62ce272d SK |
90 | w(DEFAULT_SCALE_MODE, SRC_SCALE_CTRL_REG); |
91 | ||
92 | /* inversed scaling factor: src is numerator */ | |
93 | w((src->c_width << 16) / dst->c_width, SRC_XSCALE_REG); | |
94 | w((src->c_height << 16) / dst->c_height, SRC_YSCALE_REG); | |
91884734 KD |
95 | } |
96 | ||
97 | void g2d_set_cmd(struct g2d_dev *d, u32 c) | |
98 | { | |
99 | w(c, BITBLT_COMMAND_REG); | |
100 | } | |
101 | ||
102 | void g2d_start(struct g2d_dev *d) | |
103 | { | |
104 | /* Clear cache */ | |
62ce272d SK |
105 | if (d->variant->hw_rev == TYPE_G2D_3X) |
106 | w(0x7, CACHECTL_REG); | |
107 | ||
91884734 KD |
108 | /* Enable interrupt */ |
109 | w(1, INTEN_REG); | |
110 | /* Start G2D engine */ | |
111 | w(1, BITBLT_START_REG); | |
112 | } | |
113 | ||
114 | void g2d_clear_int(struct g2d_dev *d) | |
115 | { | |
116 | w(1, INTC_PEND_REG); | |
117 | } |