ASoC: tlv312aic23: unbreak resume
[zen-stable.git] / drivers / video / atafb_iplan2p4.c
blobbee0d89463f755a4fc7a22a4d37966e618d148cb
1 /*
2 * linux/drivers/video/iplan2p4.c -- Low level frame buffer operations for
3 * interleaved bitplanes à la Atari (4
4 * planes, 2 bytes interleave)
6 * Created 5 Apr 1997 by Geert Uytterhoeven
8 * This file is subject to the terms and conditions of the GNU General Public
9 * License. See the file COPYING in the main directory of this archive for
10 * more details.
13 #include <linux/module.h>
14 #include <linux/string.h>
15 #include <linux/fb.h>
17 #include <asm/setup.h>
19 #include "atafb.h"
21 #define BPL 4
22 #include "atafb_utils.h"
24 void atafb_iplan2p4_copyarea(struct fb_info *info, u_long next_line,
25 int sy, int sx, int dy, int dx,
26 int height, int width)
28 /* bmove() has to distinguish two major cases: If both, source and
29 * destination, start at even addresses or both are at odd
30 * addresses, just the first odd and last even column (if present)
31 * require special treatment (memmove_col()). The rest between
32 * then can be copied by normal operations, because all adjacent
33 * bytes are affected and are to be stored in the same order.
34 * The pathological case is when the move should go from an odd
35 * address to an even or vice versa. Since the bytes in the plane
36 * words must be assembled in new order, it seems wisest to make
37 * all movements by memmove_col().
40 u8 *src, *dst;
41 u32 *s, *d;
42 int w, l , i, j;
43 u_int colsize;
44 u_int upwards = (dy < sy) || (dy == sy && dx < sx);
46 colsize = height;
47 if (!((sx ^ dx) & 15)) {
48 /* odd->odd or even->even */
50 if (upwards) {
51 src = (u8 *)info->screen_base + sy * next_line + (sx & ~15) / (8 / BPL);
52 dst = (u8 *)info->screen_base + dy * next_line + (dx & ~15) / (8 / BPL);
53 if (sx & 15) {
54 memmove32_col(dst, src, 0xff00ff, height, next_line - BPL * 2);
55 src += BPL * 2;
56 dst += BPL * 2;
57 width -= 8;
59 w = width >> 4;
60 if (w) {
61 s = (u32 *)src;
62 d = (u32 *)dst;
63 w *= BPL / 2;
64 l = next_line - w * 4;
65 for (j = height; j > 0; j--) {
66 for (i = w; i > 0; i--)
67 *d++ = *s++;
68 s = (u32 *)((u8 *)s + l);
69 d = (u32 *)((u8 *)d + l);
72 if (width & 15)
73 memmove32_col(dst + width / (8 / BPL), src + width / (8 / BPL),
74 0xff00ff00, height, next_line - BPL * 2);
75 } else {
76 src = (u8 *)info->screen_base + (sy - 1) * next_line + ((sx + width + 8) & ~15) / (8 / BPL);
77 dst = (u8 *)info->screen_base + (dy - 1) * next_line + ((dx + width + 8) & ~15) / (8 / BPL);
79 if ((sx + width) & 15) {
80 src -= BPL * 2;
81 dst -= BPL * 2;
82 memmove32_col(dst, src, 0xff00ff00, colsize, -next_line - BPL * 2);
83 width -= 8;
85 w = width >> 4;
86 if (w) {
87 s = (u32 *)src;
88 d = (u32 *)dst;
89 w *= BPL / 2;
90 l = next_line - w * 4;
91 for (j = height; j > 0; j--) {
92 for (i = w; i > 0; i--)
93 *--d = *--s;
94 s = (u32 *)((u8 *)s - l);
95 d = (u32 *)((u8 *)d - l);
98 if (sx & 15)
99 memmove32_col(dst - (width - 16) / (8 / BPL),
100 src - (width - 16) / (8 / BPL),
101 0xff00ff, colsize, -next_line - BPL * 2);
103 } else {
104 /* odd->even or even->odd */
105 if (upwards) {
106 u32 *src32, *dst32;
107 u32 pval[4], v, v1, mask;
108 int i, j, w, f;
110 src = (u8 *)info->screen_base + sy * next_line + (sx & ~15) / (8 / BPL);
111 dst = (u8 *)info->screen_base + dy * next_line + (dx & ~15) / (8 / BPL);
113 mask = 0xff00ff00;
114 f = 0;
115 w = width;
116 if (sx & 15) {
117 f = 1;
118 w += 8;
120 if ((sx + width) & 15)
121 f |= 2;
122 w >>= 4;
123 for (i = height; i; i--) {
124 src32 = (u32 *)src;
125 dst32 = (u32 *)dst;
127 if (f & 1) {
128 pval[0] = (*src32++ << 8) & mask;
129 pval[1] = (*src32++ << 8) & mask;
130 } else {
131 pval[0] = dst32[0] & mask;
132 pval[1] = dst32[1] & mask;
135 for (j = w; j > 0; j--) {
136 v = *src32++;
137 v1 = v & mask;
138 *dst32++ = pval[0] | (v1 >> 8);
139 pval[0] = (v ^ v1) << 8;
140 v = *src32++;
141 v1 = v & mask;
142 *dst32++ = pval[1] | (v1 >> 8);
143 pval[1] = (v ^ v1) << 8;
146 if (f & 2) {
147 dst32[0] = (dst32[0] & mask) | pval[0];
148 dst32[1] = (dst32[1] & mask) | pval[1];
151 src += next_line;
152 dst += next_line;
154 } else {
155 u32 *src32, *dst32;
156 u32 pval[4], v, v1, mask;
157 int i, j, w, f;
159 src = (u8 *)info->screen_base + (sy - 1) * next_line + ((sx + width + 8) & ~15) / (8 / BPL);
160 dst = (u8 *)info->screen_base + (dy - 1) * next_line + ((dx + width + 8) & ~15) / (8 / BPL);
162 mask = 0xff00ff;
163 f = 0;
164 w = width;
165 if ((dx + width) & 15)
166 f = 1;
167 if (sx & 15) {
168 f |= 2;
169 w += 8;
171 w >>= 4;
172 for (i = height; i; i--) {
173 src32 = (u32 *)src;
174 dst32 = (u32 *)dst;
176 if (f & 1) {
177 pval[0] = dst32[-1] & mask;
178 pval[1] = dst32[-2] & mask;
179 } else {
180 pval[0] = (*--src32 >> 8) & mask;
181 pval[1] = (*--src32 >> 8) & mask;
184 for (j = w; j > 0; j--) {
185 v = *--src32;
186 v1 = v & mask;
187 *--dst32 = pval[0] | (v1 << 8);
188 pval[0] = (v ^ v1) >> 8;
189 v = *--src32;
190 v1 = v & mask;
191 *--dst32 = pval[1] | (v1 << 8);
192 pval[1] = (v ^ v1) >> 8;
195 if (!(f & 2)) {
196 dst32[-1] = (dst32[-1] & mask) | pval[0];
197 dst32[-2] = (dst32[-2] & mask) | pval[1];
200 src -= next_line;
201 dst -= next_line;
207 void atafb_iplan2p4_fillrect(struct fb_info *info, u_long next_line, u32 color,
208 int sy, int sx, int height, int width)
210 u32 *dest;
211 int rows, i;
212 u32 cval[4];
214 dest = (u32 *)(info->screen_base + sy * next_line + (sx & ~15) / (8 / BPL));
215 if (sx & 15) {
216 u8 *dest8 = (u8 *)dest + 1;
218 expand8_col2mask(color, cval);
220 for (i = height; i; i--) {
221 fill8_col(dest8, cval);
222 dest8 += next_line;
224 dest += BPL / 2;
225 width -= 8;
228 expand16_col2mask(color, cval);
229 rows = width >> 4;
230 if (rows) {
231 u32 *d = dest;
232 u32 off = next_line - rows * BPL * 2;
233 for (i = height; i; i--) {
234 d = fill16_col(d, rows, cval);
235 d = (u32 *)((long)d + off);
237 dest += rows * BPL / 2;
238 width &= 15;
241 if (width) {
242 u8 *dest8 = (u8 *)dest;
244 expand8_col2mask(color, cval);
246 for (i = height; i; i--) {
247 fill8_col(dest8, cval);
248 dest8 += next_line;
253 void atafb_iplan2p4_linefill(struct fb_info *info, u_long next_line,
254 int dy, int dx, u32 width,
255 const u8 *data, u32 bgcolor, u32 fgcolor)
257 u32 *dest;
258 const u16 *data16;
259 int rows;
260 u32 fgm[4], bgm[4], m;
262 dest = (u32 *)(info->screen_base + dy * next_line + (dx & ~15) / (8 / BPL));
263 if (dx & 15) {
264 fill8_2col((u8 *)dest + 1, fgcolor, bgcolor, *data++);
265 dest += BPL / 2;
266 width -= 8;
269 if (width >= 16) {
270 data16 = (const u16 *)data;
271 expand16_2col2mask(fgcolor, bgcolor, fgm, bgm);
273 for (rows = width / 16; rows; rows--) {
274 u16 d = *data16++;
275 m = d | ((u32)d << 16);
276 *dest++ = (m & fgm[0]) ^ bgm[0];
277 *dest++ = (m & fgm[1]) ^ bgm[1];
280 data = (const u8 *)data16;
281 width &= 15;
284 if (width)
285 fill8_2col((u8 *)dest, fgcolor, bgcolor, *data);
288 #ifdef MODULE
289 MODULE_LICENSE("GPL");
291 int init_module(void)
293 return 0;
296 void cleanup_module(void)
299 #endif /* MODULE */
303 * Visible symbols for modules
306 EXPORT_SYMBOL(atafb_iplan2p4_copyarea);
307 EXPORT_SYMBOL(atafb_iplan2p4_fillrect);
308 EXPORT_SYMBOL(atafb_iplan2p4_linefill);