34 /* state for pattern generator and whether swapping is necessary */
41 /* used to get the pattern in native order */
42 static unsigned long fb_pattern_get(struct fb_pattern *pattern)  in fb_pattern_get()  argument
44 	return pattern->pixels;  in fb_pattern_get()
47 /* used to get the pattern in reverse order */
48 static unsigned long fb_pattern_get_reverse(struct fb_pattern *pattern)  in fb_pattern_get_reverse()  argument
50 	return swab_long(pattern->pixels);  in fb_pattern_get_reverse()
53 /* next static pattern */
54 static void fb_pattern_static(struct fb_pattern *pattern)  in fb_pattern_static()  argument
59 /* next rotating pattern */
60 static void fb_pattern_rotate(struct fb_pattern *pattern)  in fb_pattern_rotate()  argument
62 	pattern->pixels = fb_left(pattern->pixels, pattern->left)  in fb_pattern_rotate()
63 		| fb_right(pattern->pixels, pattern->right);  in fb_pattern_rotate()
68 /* create the filling pattern from a given color */
79 	unsigned long pattern;  in pixel_to_pat()  local
83 		pattern = mulconst[bpp] * color;  in pixel_to_pat()
86 		pattern = color;  in pixel_to_pat()
87 		pattern = pattern | pattern << bpp;  in pixel_to_pat()
88 		pattern = pattern | pattern << bpp*2;  in pixel_to_pat()
91 		pattern = color;  in pixel_to_pat()
92 		pattern = pattern | pattern << bpp;  in pixel_to_pat()
98 	pattern <<= (BITS_PER_LONG % bpp);  in pixel_to_pat()
99 	pattern |= pattern >> bpp;  in pixel_to_pat()
101 	return pattern;  in pixel_to_pat()
104 /* overwrite bits according to a pattern in a line */
106 				    struct fb_pattern *pattern,  in bitfill()  argument
107 				    unsigned long (*get)(struct fb_pattern *pattern),  in bitfill()  argument
108 				    void (*rotate)(struct fb_pattern *pattern),  in bitfill()  argument
114 	first = fb_pixel_mask(dst->bits, pattern->reverse);  in bitfill()
115 	last = ~fb_pixel_mask(end & (BITS_PER_LONG-1), pattern->reverse);  in bitfill()
119 		first = get(pattern);  in bitfill()
128 			fb_modify_offset(get(pattern), first, 0, dst);  in bitfill()
129 			rotate(pattern);  in bitfill()
133 			fb_write_offset(get(pattern), offset + 0, dst);  in bitfill()
134 			rotate(pattern);  in bitfill()
135 			fb_write_offset(get(pattern), offset + 1, dst);  in bitfill()
136 			rotate(pattern);  in bitfill()
137 			fb_write_offset(get(pattern), offset + 2, dst);  in bitfill()
138 			rotate(pattern);  in bitfill()
139 			fb_write_offset(get(pattern), offset + 3, dst);  in bitfill()
140 			rotate(pattern);  in bitfill()
143 			fb_write_offset(get(pattern), offset++, dst);  in bitfill()
144 			rotate(pattern);  in bitfill()
148 			fb_modify_offset(get(pattern), last, offset, dst);  in bitfill()
152 /* inverts bits according to a pattern in a line */
154 				      struct fb_pattern *pattern,  in bitinvert()  argument
155 				      unsigned long (*get)(struct fb_pattern *pattern),  in bitinvert()  argument
156 				      void (*rotate)(struct fb_pattern *pattern),  in bitinvert()  argument
163 	first = fb_pixel_mask(dst->bits, pattern->reverse);  in bitinvert()
164 	last = ~fb_pixel_mask(end & (BITS_PER_LONG-1), pattern->reverse);  in bitinvert()
173 			first &= get(pattern);  in bitinvert()
176 			rotate(pattern);  in bitinvert()
181 			fb_invert_offset(get(pattern), offset + 0, dst);  in bitinvert()
182 			rotate(pattern);  in bitinvert()
183 			fb_invert_offset(get(pattern), offset + 1, dst);  in bitinvert()
184 			rotate(pattern);  in bitinvert()
185 			fb_invert_offset(get(pattern), offset + 2, dst);  in bitinvert()
186 			rotate(pattern);  in bitinvert()
187 			fb_invert_offset(get(pattern), offset + 3, dst);  in bitinvert()
188 			rotate(pattern);  in bitinvert()
191 			fb_invert_offset(get(pattern), offset++, dst);  in bitinvert()
192 			rotate(pattern);  in bitinvert()
196 	last &= get(pattern);  in bitinvert()
201 /* pattern doesn't change. 1, 2, 4, 8, 16, 32, 64 bpp */
203 				      struct fb_address *dst, struct fb_pattern *pattern,  in fb_fillrect_static()  argument
209 	if (bpp > 8 && pattern->reverse.byte)  in fb_fillrect_static()
210 		pattern->pixels = swab_long(pattern->pixels);  in fb_fillrect_static()
214 			bitinvert(dst, pattern, fb_pattern_get, fb_pattern_static, width);  in fb_fillrect_static()
219 			bitfill(dst, pattern, fb_pattern_get, fb_pattern_static, width);  in fb_fillrect_static()
224 /* rotate pattern to the correct position */
225 static inline unsigned long fb_rotate(unsigned long pattern, int shift, int bpp)  in fb_rotate()  argument
228 	return fb_right(pattern, shift) | fb_left(pattern, bpp - shift);  in fb_rotate()
231 /* rotating pattern, for example 24 bpp */
234 						 struct fb_pattern *pattern,  in fb_fillrect_rotating()  argument
235 						 unsigned long (*get)(struct fb_pattern *pattern),  in fb_fillrect_rotating()  argument
238 	unsigned long pat = pattern->pixels;  in fb_fillrect_rotating()
244 			pattern->pixels = fb_rotate(pat, dst->bits, bpp);  in fb_fillrect_rotating()
245 			bitinvert(dst, pattern, get, fb_pattern_rotate, width);  in fb_fillrect_rotating()
250 			pattern->pixels = fb_rotate(pat, dst->bits, bpp);  in fb_fillrect_rotating()
251 			bitfill(dst, pattern, get, fb_pattern_rotate, width);  in fb_fillrect_rotating()
262 	struct fb_pattern pattern;  in fb_fillrect()  local
266 	pattern.pixels = pixel_to_pat(bpp, palette ? palette[rect->color] : rect->color);  in fb_fillrect()
267 	pattern.reverse = fb_reverse_init(p);  in fb_fillrect()
268 	pattern.left = BITS_PER_LONG % bpp;  in fb_fillrect()
269 	if (pattern.left) {  in fb_fillrect()
270 		pattern.right = bpp - pattern.left;  in fb_fillrect()
271 		if (pattern.reverse.byte)  in fb_fillrect()
272 			fb_fillrect_rotating(rect, bpp, &dst, &pattern,  in fb_fillrect()
275 			fb_fillrect_rotating(rect, bpp, &dst, &pattern,  in fb_fillrect()
278 		fb_fillrect_static(rect, bpp, &dst, &pattern, bits_per_line);  in fb_fillrect()