1 files changed, 288 insertions, 0 deletions
diff --git a/drivers/video/fbdev/sysimgblt.c b/drivers/video/fbdev/sysimgblt.c
new file mode 100644
index 000000000000..a4d05b1b17d7
--- /dev/null
+++ b/drivers/video/fbdev/sysimgblt.c
@@ -0,0 +1,288 @@
+/*
+ *  Generic 1-bit or 8-bit source to 1-32 bit destination expansion
+ *  for frame buffer located in system RAM with packed pixels of any depth.
+ *
+ *  Based almost entirely on cfbimgblt.c
+ *
+ *      Copyright (C)  April 2007 Antonino Daplas <adaplas@pol.net>
+ *
+ *  This file is subject to the terms and conditions of the GNU General Public
+ *  License.  See the file COPYING in the main directory of this archive for
+ *  more details.
+ */
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/fb.h>
+#include <asm/types.h>
+#define DEBUG
+#ifdef DEBUG
+#define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt,__func__,## args)
+#else
+#define DPRINTK(fmt, args...)
+#endif
+static const u32 cfb_tab8_be[] = {
+    0x00000000,0x000000ff,0x0000ff00,0x0000ffff,
+    0x00ff0000,0x00ff00ff,0x00ffff00,0x00ffffff,
+    0xff000000,0xff0000ff,0xff00ff00,0xff00ffff,
+    0xffff0000,0xffff00ff,0xffffff00,0xffffffff
+};
+static const u32 cfb_tab8_le[] = {
+    0x00000000,0xff000000,0x00ff0000,0xffff0000,
+    0x0000ff00,0xff00ff00,0x00ffff00,0xffffff00,
+    0x000000ff,0xff0000ff,0x00ff00ff,0xffff00ff,
+    0x0000ffff,0xff00ffff,0x00ffffff,0xffffffff
+};
+static const u32 cfb_tab16_be[] = {
+    0x00000000, 0x0000ffff, 0xffff0000, 0xffffffff
+};
+static const u32 cfb_tab16_le[] = {
+    0x00000000, 0xffff0000, 0x0000ffff, 0xffffffff
+};
+static const u32 cfb_tab32[] = {
+        0x00000000, 0xffffffff
+};
+static void color_imageblit(const struct fb_image *image, struct fb_info *p,
+                            void *dst1, u32 start_index, u32 pitch_index)
+{
+        /* Draw the penguin */
+        u32 *dst, *dst2;
+        u32 color = 0, val, shift;
+        int i, n, bpp = p->var.bits_per_pixel;
+        u32 null_bits = 32 - bpp;
+        u32 *palette = (u32 *) p->pseudo_palette;
+        const u8 *src = image->data;
+        dst2 = dst1;
+        for (i = image->height; i--; ) {
+                n = image->width;
+                dst = dst1;
+                shift = 0;
+                val = 0;
+                if (start_index) {
+                        u32 start_mask = ~(FB_SHIFT_HIGH(p, ~(u32)0,
+                                                         start_index));
+                        val = *dst & start_mask;
+                        shift = start_index;
+                }
+                while (n--) {
+                        if (p->fix.visual == FB_VISUAL_TRUECOLOR ||
+                            p->fix.visual == FB_VISUAL_DIRECTCOLOR )
+                                color = palette[*src];
+                        else
+                                color = *src;
+                        color <<= FB_LEFT_POS(p, bpp);
+                        val |= FB_SHIFT_HIGH(p, color, shift);
+                        if (shift >= null_bits) {
+                                *dst++ = val;
+                                val = (shift == null_bits) ? 0 :
+                                        FB_SHIFT_LOW(p, color, 32 - shift);
+                        }
+                        shift += bpp;
+                        shift &= (32 - 1);
+                        src++;
+                }
+                if (shift) {
+                        u32 end_mask = FB_SHIFT_HIGH(p, ~(u32)0, shift);
+                        *dst &= end_mask;
+                        *dst |= val;
+                }
+                dst1 += p->fix.line_length;
+                if (pitch_index) {
+                        dst2 += p->fix.line_length;
+                        dst1 = (u8 *)((long)dst2 & ~(sizeof(u32) - 1));
+                        start_index += pitch_index;
+                        start_index &= 32 - 1;
+                }
+        }
+}
+static void slow_imageblit(const struct fb_image *image, struct fb_info *p,
+                                  void *dst1, u32 fgcolor, u32 bgcolor,
+                                  u32 start_index, u32 pitch_index)
+{
+        u32 shift, color = 0, bpp = p->var.bits_per_pixel;
+        u32 *dst, *dst2;
+        u32 val, pitch = p->fix.line_length;
+        u32 null_bits = 32 - bpp;
+        u32 spitch = (image->width+7)/8;
+        const u8 *src = image->data, *s;
+        u32 i, j, l;
+        dst2 = dst1;
+        fgcolor <<= FB_LEFT_POS(p, bpp);
+        bgcolor <<= FB_LEFT_POS(p, bpp);
+        for (i = image->height; i--; ) {
+                shift = val = 0;
+                l = 8;
+                j = image->width;
+                dst = dst1;
+                s = src;
+                /* write leading bits */
+                if (start_index) {
+                        u32 start_mask = ~(FB_SHIFT_HIGH(p, ~(u32)0,
+                                                         start_index));
+                        val = *dst & start_mask;
+                        shift = start_index;
+                }
+                while (j--) {
+                        l--;
+                        color = (*s & (1 << l)) ? fgcolor : bgcolor;
+                        val |= FB_SHIFT_HIGH(p, color, shift);
+                        /* Did the bitshift spill bits to the next long? */
+                        if (shift >= null_bits) {
+                                *dst++ = val;
+                                val = (shift == null_bits) ? 0 :
+                                        FB_SHIFT_LOW(p, color, 32 - shift);
+                        }
+                        shift += bpp;
+                        shift &= (32 - 1);
+                        if (!l) { l = 8; s++; }
+                }
+                /* write trailing bits */
+                if (shift) {
+                        u32 end_mask = FB_SHIFT_HIGH(p, ~(u32)0, shift);
+                        *dst &= end_mask;
+                        *dst |= val;
+                }
+                dst1 += pitch;
+                src += spitch;
+                if (pitch_index) {
+                        dst2 += pitch;
+                        dst1 = (u8 *)((long)dst2 & ~(sizeof(u32) - 1));
+                        start_index += pitch_index;
+                        start_index &= 32 - 1;
+                }
+        }
+}
+/*
+ * fast_imageblit - optimized monochrome color expansion
+ *
+ * Only if:  bits_per_pixel == 8, 16, or 32
+ *           image->width is divisible by pixel/dword (ppw);
+ *           fix->line_legth is divisible by 4;
+ *           beginning and end of a scanline is dword aligned
+ */
+static void fast_imageblit(const struct fb_image *image, struct fb_info *p,
+                                  void *dst1, u32 fgcolor, u32 bgcolor)
+{
+        u32 fgx = fgcolor, bgx = bgcolor, bpp = p->var.bits_per_pixel;
+        u32 ppw = 32/bpp, spitch = (image->width + 7)/8;
+        u32 bit_mask, end_mask, eorx, shift;
+        const char *s = image->data, *src;
+        u32 *dst;
+        const u32 *tab = NULL;
+        int i, j, k;
+        switch (bpp) {
+        case 8:
+                tab = fb_be_math(p) ? cfb_tab8_be : cfb_tab8_le;
+                break;
+        case 16:
+                tab = fb_be_math(p) ? cfb_tab16_be : cfb_tab16_le;
+                break;
+        case 32:
+        default:
+                tab = cfb_tab32;
+                break;
+        }
+        for (i = ppw-1; i--; ) {
+                fgx <<= bpp;
+                bgx <<= bpp;
+                fgx |= fgcolor;
+                bgx |= bgcolor;
+        }
+        bit_mask = (1 << ppw) - 1;
+        eorx = fgx ^ bgx;
+        k = image->width/ppw;
+        for (i = image->height; i--; ) {
+                dst = dst1;
+                shift = 8;
+                src = s;
+                for (j = k; j--; ) {
+                        shift -= ppw;
+                        end_mask = tab[(*src >> shift) & bit_mask];
+                        *dst++ = (end_mask & eorx) ^ bgx;
+                        if (!shift) {
+                                shift = 8;
+                                src++;
+                        }
+                }
+                dst1 += p->fix.line_length;
+                s += spitch;
+        }
+}
+void sys_imageblit(struct fb_info *p, const struct fb_image *image)
+{
+        u32 fgcolor, bgcolor, start_index, bitstart, pitch_index = 0;
+        u32 bpl = sizeof(u32), bpp = p->var.bits_per_pixel;
+        u32 width = image->width;
+        u32 dx = image->dx, dy = image->dy;
+        void *dst1;
+        if (p->state != FBINFO_STATE_RUNNING)
+                return;
+        bitstart = (dy * p->fix.line_length * 8) + (dx * bpp);
+        start_index = bitstart & (32 - 1);
+        pitch_index = (p->fix.line_length & (bpl - 1)) * 8;
+        bitstart /= 8;
+        bitstart &= ~(bpl - 1);
+        dst1 = (void __force *)p->screen_base + bitstart;
+        if (p->fbops->fb_sync)
+                p->fbops->fb_sync(p);
+        if (image->depth == 1) {
+                if (p->fix.visual == FB_VISUAL_TRUECOLOR ||
+                    p->fix.visual == FB_VISUAL_DIRECTCOLOR) {
+                        fgcolor = ((u32*)(p->pseudo_palette))[image->fg_color];
+                        bgcolor = ((u32*)(p->pseudo_palette))[image->bg_color];
+                } else {
+                        fgcolor = image->fg_color;
+                        bgcolor = image->bg_color;
+                }
+                if (32 % bpp == 0 && !start_index && !pitch_index &&
+                    ((width & (32/bpp-1)) == 0) &&
+                    bpp >= 8 && bpp <= 32)
+                        fast_imageblit(image, p, dst1, fgcolor, bgcolor);
+                else
+                        slow_imageblit(image, p, dst1, fgcolor, bgcolor,
+                                        start_index, pitch_index);
+        } else
+                color_imageblit(image, p, dst1, start_index, pitch_index);
+}
+EXPORT_SYMBOL(sys_imageblit);
+MODULE_AUTHOR("Antonino Daplas <adaplas@pol.net>");
+MODULE_DESCRIPTION("1-bit/8-bit to 1-32 bit color expansion (sys-to-sys)");
+MODULE_LICENSE("GPL");

diff --git a/drivers/video/fbdev/sysimgblt.c b/drivers/video/fbdev/sysimgblt.c new file mode 100644 index 000000000000..a4d05b1b17d7 --- /dev/null +++ b/drivers/video/fbdev/sysimgblt.c
@@ -0,0 +1,288 @@
	1	/*
	2	* Generic 1-bit or 8-bit source to 1-32 bit destination expansion
	3	* for frame buffer located in system RAM with packed pixels of any depth.
	4	*
	5	* Based almost entirely on cfbimgblt.c
	6	*
	7	* Copyright (C) April 2007 Antonino Daplas <adaplas@pol.net>
	8	*
	9	* This file is subject to the terms and conditions of the GNU General Public
	10	* License. See the file COPYING in the main directory of this archive for
	11	* more details.
	12	*/
	13	#include <linux/module.h>
	14	#include <linux/string.h>
	15	#include <linux/fb.h>
	16	#include <asm/types.h>
	17
	18	#define DEBUG
	19
	20	#ifdef DEBUG
	21	#define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt,__func__,## args)
	22	#else
	23	#define DPRINTK(fmt, args...)
	24	#endif
	25
	26	static const u32 cfb_tab8_be[] = {
	27	0x00000000,0x000000ff,0x0000ff00,0x0000ffff,
	28	0x00ff0000,0x00ff00ff,0x00ffff00,0x00ffffff,
	29	0xff000000,0xff0000ff,0xff00ff00,0xff00ffff,
	30	0xffff0000,0xffff00ff,0xffffff00,0xffffffff
	31	};
	32
	33	static const u32 cfb_tab8_le[] = {
	34	0x00000000,0xff000000,0x00ff0000,0xffff0000,
	35	0x0000ff00,0xff00ff00,0x00ffff00,0xffffff00,
	36	0x000000ff,0xff0000ff,0x00ff00ff,0xffff00ff,
	37	0x0000ffff,0xff00ffff,0x00ffffff,0xffffffff
	38	};
	39
	40	static const u32 cfb_tab16_be[] = {
	41	0x00000000, 0x0000ffff, 0xffff0000, 0xffffffff
	42	};
	43
	44	static const u32 cfb_tab16_le[] = {
	45	0x00000000, 0xffff0000, 0x0000ffff, 0xffffffff
	46	};
	47
	48	static const u32 cfb_tab32[] = {
	49	0x00000000, 0xffffffff
	50	};
	51
	52	static void color_imageblit(const struct fb_image image, struct fb_info p,
	53	void *dst1, u32 start_index, u32 pitch_index)
	54	{
	55	/* Draw the penguin */
	56	u32 dst, dst2;
	57	u32 color = 0, val, shift;
	58	int i, n, bpp = p->var.bits_per_pixel;
	59	u32 null_bits = 32 - bpp;
	60	u32 palette = (u32 ) p->pseudo_palette;
	61	const u8 *src = image->data;
	62
	63	dst2 = dst1;
	64	for (i = image->height; i--; ) {
	65	n = image->width;
	66	dst = dst1;
	67	shift = 0;
	68	val = 0;
	69
	70	if (start_index) {
	71	u32 start_mask = ~(FB_SHIFT_HIGH(p, ~(u32)0,
	72	start_index));
	73	val = *dst & start_mask;
	74	shift = start_index;
	75	}
	76	while (n--) {
	77	if (p->fix.visual == FB_VISUAL_TRUECOLOR \|\|
	78	p->fix.visual == FB_VISUAL_DIRECTCOLOR )
	79	color = palette[*src];
	80	else
	81	color = *src;
	82	color <<= FB_LEFT_POS(p, bpp);
	83	val \|= FB_SHIFT_HIGH(p, color, shift);
	84	if (shift >= null_bits) {
	85	*dst++ = val;
	86
	87	val = (shift == null_bits) ? 0 :
	88	FB_SHIFT_LOW(p, color, 32 - shift);
	89	}
	90	shift += bpp;
	91	shift &= (32 - 1);
	92	src++;
	93	}
	94	if (shift) {
	95	u32 end_mask = FB_SHIFT_HIGH(p, ~(u32)0, shift);
	96
	97	*dst &= end_mask;
	98	*dst \|= val;
	99	}
	100	dst1 += p->fix.line_length;
	101	if (pitch_index) {
	102	dst2 += p->fix.line_length;
	103	dst1 = (u8 *)((long)dst2 & ~(sizeof(u32) - 1));
	104
	105	start_index += pitch_index;
	106	start_index &= 32 - 1;
	107	}
	108	}
	109	}
	110
	111	static void slow_imageblit(const struct fb_image image, struct fb_info p,
	112	void *dst1, u32 fgcolor, u32 bgcolor,
	113	u32 start_index, u32 pitch_index)
	114	{
	115	u32 shift, color = 0, bpp = p->var.bits_per_pixel;
	116	u32 dst, dst2;
	117	u32 val, pitch = p->fix.line_length;
	118	u32 null_bits = 32 - bpp;
	119	u32 spitch = (image->width+7)/8;
	120	const u8 src = image->data, s;
	121	u32 i, j, l;
	122
	123	dst2 = dst1;
	124	fgcolor <<= FB_LEFT_POS(p, bpp);
	125	bgcolor <<= FB_LEFT_POS(p, bpp);
	126
	127	for (i = image->height; i--; ) {
	128	shift = val = 0;
	129	l = 8;
	130	j = image->width;
	131	dst = dst1;
	132	s = src;
	133
	134	/* write leading bits */
	135	if (start_index) {
	136	u32 start_mask = ~(FB_SHIFT_HIGH(p, ~(u32)0,
	137	start_index));
	138	val = *dst & start_mask;
	139	shift = start_index;
	140	}
	141
	142	while (j--) {
	143	l--;
	144	color = (*s & (1 << l)) ? fgcolor : bgcolor;
	145	val \|= FB_SHIFT_HIGH(p, color, shift);
	146
	147	/* Did the bitshift spill bits to the next long? */
	148	if (shift >= null_bits) {
	149	*dst++ = val;
	150	val = (shift == null_bits) ? 0 :
	151	FB_SHIFT_LOW(p, color, 32 - shift);
	152	}
	153	shift += bpp;
	154	shift &= (32 - 1);
	155	if (!l) { l = 8; s++; }
	156	}
	157
	158	/* write trailing bits */
	159	if (shift) {
	160	u32 end_mask = FB_SHIFT_HIGH(p, ~(u32)0, shift);
	161
	162	*dst &= end_mask;
	163	*dst \|= val;
	164	}
	165
	166	dst1 += pitch;
	167	src += spitch;
	168	if (pitch_index) {
	169	dst2 += pitch;
	170	dst1 = (u8 *)((long)dst2 & ~(sizeof(u32) - 1));
	171	start_index += pitch_index;
	172	start_index &= 32 - 1;
	173	}
	174
	175	}
	176	}
	177
	178	/*
	179	* fast_imageblit - optimized monochrome color expansion
	180	*
	181	* Only if: bits_per_pixel == 8, 16, or 32
	182	* image->width is divisible by pixel/dword (ppw);
	183	* fix->line_legth is divisible by 4;
	184	* beginning and end of a scanline is dword aligned
	185	*/
	186	static void fast_imageblit(const struct fb_image image, struct fb_info p,
	187	void *dst1, u32 fgcolor, u32 bgcolor)
	188	{
	189	u32 fgx = fgcolor, bgx = bgcolor, bpp = p->var.bits_per_pixel;
	190	u32 ppw = 32/bpp, spitch = (image->width + 7)/8;
	191	u32 bit_mask, end_mask, eorx, shift;
	192	const char s = image->data, src;
	193	u32 *dst;
	194	const u32 *tab = NULL;
	195	int i, j, k;
	196
	197	switch (bpp) {
	198	case 8:
	199	tab = fb_be_math(p) ? cfb_tab8_be : cfb_tab8_le;
	200	break;
	201	case 16:
	202	tab = fb_be_math(p) ? cfb_tab16_be : cfb_tab16_le;
	203	break;
	204	case 32:
	205	default:
	206	tab = cfb_tab32;
	207	break;
	208	}
	209
	210	for (i = ppw-1; i--; ) {
	211	fgx <<= bpp;
	212	bgx <<= bpp;
	213	fgx \|= fgcolor;
	214	bgx \|= bgcolor;
	215	}
	216
	217	bit_mask = (1 << ppw) - 1;
	218	eorx = fgx ^ bgx;
	219	k = image->width/ppw;
	220
	221	for (i = image->height; i--; ) {
	222	dst = dst1;
	223	shift = 8;
	224	src = s;
	225
	226	for (j = k; j--; ) {
	227	shift -= ppw;
	228	end_mask = tab[(*src >> shift) & bit_mask];
	229	*dst++ = (end_mask & eorx) ^ bgx;
	230	if (!shift) {
	231	shift = 8;
	232	src++;
	233	}
	234	}
	235	dst1 += p->fix.line_length;
	236	s += spitch;
	237	}
	238	}
	239
	240	void sys_imageblit(struct fb_info p, const struct fb_image image)
	241	{
	242	u32 fgcolor, bgcolor, start_index, bitstart, pitch_index = 0;
	243	u32 bpl = sizeof(u32), bpp = p->var.bits_per_pixel;
	244	u32 width = image->width;
	245	u32 dx = image->dx, dy = image->dy;
	246	void *dst1;
	247
	248	if (p->state != FBINFO_STATE_RUNNING)
	249	return;
	250
	251	bitstart = (dy * p->fix.line_length * 8) + (dx * bpp);
	252	start_index = bitstart & (32 - 1);
	253	pitch_index = (p->fix.line_length & (bpl - 1)) * 8;
	254
	255	bitstart /= 8;
	256	bitstart &= ~(bpl - 1);
	257	dst1 = (void __force *)p->screen_base + bitstart;
	258
	259	if (p->fbops->fb_sync)
	260	p->fbops->fb_sync(p);
	261
	262	if (image->depth == 1) {
	263	if (p->fix.visual == FB_VISUAL_TRUECOLOR \|\|
	264	p->fix.visual == FB_VISUAL_DIRECTCOLOR) {
	265	fgcolor = ((u32*)(p->pseudo_palette))[image->fg_color];
	266	bgcolor = ((u32*)(p->pseudo_palette))[image->bg_color];
	267	} else {
	268	fgcolor = image->fg_color;
	269	bgcolor = image->bg_color;
	270	}
	271
	272	if (32 % bpp == 0 && !start_index && !pitch_index &&
	273	((width & (32/bpp-1)) == 0) &&
	274	bpp >= 8 && bpp <= 32)
	275	fast_imageblit(image, p, dst1, fgcolor, bgcolor);
	276	else
	277	slow_imageblit(image, p, dst1, fgcolor, bgcolor,
	278	start_index, pitch_index);
	279	} else
	280	color_imageblit(image, p, dst1, start_index, pitch_index);
	281	}
	282
	283	EXPORT_SYMBOL(sys_imageblit);
	284
	285	MODULE_AUTHOR("Antonino Daplas <adaplas@pol.net>");
	286	MODULE_DESCRIPTION("1-bit/8-bit to 1-32 bit color expansion (sys-to-sys)");
	287	MODULE_LICENSE("GPL");
	288