1 files changed, 291 insertions, 0 deletions
diff --git a/drivers/video/sysimgblt.c b/drivers/video/sysimgblt.c
new file mode 100644
index 000000000000..bd7e7e9d155f
--- /dev/null
+++ b/drivers/video/sysimgblt.c
@@ -0,0 +1,291 @@
+/*
+ *  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,__FUNCTION__,## args)
+#else
+#define DPRINTK(fmt, args...)
+#endif
+static const u32 cfb_tab8[] = {
+#if defined(__BIG_ENDIAN)
+    0x00000000,0x000000ff,0x0000ff00,0x0000ffff,
+    0x00ff0000,0x00ff00ff,0x00ffff00,0x00ffffff,
+    0xff000000,0xff0000ff,0xff00ff00,0xff00ffff,
+    0xffff0000,0xffff00ff,0xffffff00,0xffffffff
+#elif defined(__LITTLE_ENDIAN)
+    0x00000000,0xff000000,0x00ff0000,0xffff0000,
+    0x0000ff00,0xff00ff00,0x00ffff00,0xffffff00,
+    0x000000ff,0xff0000ff,0x00ff00ff,0xffff00ff,
+    0x0000ffff,0xff00ffff,0x00ffffff,0xffffffff
+#else
+#error FIXME: No endianness??
+#endif
+};
+static const u32 cfb_tab16[] = {
+#if defined(__BIG_ENDIAN)
+    0x00000000, 0x0000ffff, 0xffff0000, 0xffffffff
+#elif defined(__LITTLE_ENDIAN)
+    0x00000000, 0xffff0000, 0x0000ffff, 0xffffffff
+#else
+#error FIXME: No endianness??
+#endif
+};
+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(~(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(bpp);
+                        val |= FB_SHIFT_HIGH(color, shift);
+                        if (shift >= null_bits) {
+                                *dst++ = val;
+                                val = (shift == null_bits) ? 0 :
+                                        FB_SHIFT_LOW(color, 32 - shift);
+                        }
+                        shift += bpp;
+                        shift &= (32 - 1);
+                        src++;
+                }
+                if (shift) {
+                        u32 end_mask = FB_SHIFT_HIGH(~(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(bpp);
+        bgcolor <<= FB_LEFT_POS(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(~(u32)0,start_index));
+                        val = *dst & start_mask;
+                        shift = start_index;
+                }
+                while (j--) {
+                        l--;
+                        color = (*s & (1 << l)) ? fgcolor : bgcolor;
+                        val |= FB_SHIFT_HIGH(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(color,32 - shift);
+                        }
+                        shift += bpp;
+                        shift &= (32 - 1);
+                        if (!l) { l = 8; s++; };
+                }
+                /* write trailing bits */
+                if (shift) {
+                        u32 end_mask = FB_SHIFT_HIGH(~(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 = cfb_tab8;
+                break;
+        case 16:
+                tab = cfb_tab16;
+                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/sysimgblt.c b/drivers/video/sysimgblt.c new file mode 100644 index 000000000000..bd7e7e9d155f --- /dev/null +++ b/drivers/video/sysimgblt.c
@@ -0,0 +1,291 @@
	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,__FUNCTION__,## args)
	22	#else
	23	#define DPRINTK(fmt, args...)
	24	#endif
	25
	26	static const u32 cfb_tab8[] = {
	27	#if defined(__BIG_ENDIAN)
	28	0x00000000,0x000000ff,0x0000ff00,0x0000ffff,
	29	0x00ff0000,0x00ff00ff,0x00ffff00,0x00ffffff,
	30	0xff000000,0xff0000ff,0xff00ff00,0xff00ffff,
	31	0xffff0000,0xffff00ff,0xffffff00,0xffffffff
	32	#elif defined(__LITTLE_ENDIAN)
	33	0x00000000,0xff000000,0x00ff0000,0xffff0000,
	34	0x0000ff00,0xff00ff00,0x00ffff00,0xffffff00,
	35	0x000000ff,0xff0000ff,0x00ff00ff,0xffff00ff,
	36	0x0000ffff,0xff00ffff,0x00ffffff,0xffffffff
	37	#else
	38	#error FIXME: No endianness??
	39	#endif
	40	};
	41
	42	static const u32 cfb_tab16[] = {
	43	#if defined(__BIG_ENDIAN)
	44	0x00000000, 0x0000ffff, 0xffff0000, 0xffffffff
	45	#elif defined(__LITTLE_ENDIAN)
	46	0x00000000, 0xffff0000, 0x0000ffff, 0xffffffff
	47	#else
	48	#error FIXME: No endianness??
	49	#endif
	50	};
	51
	52	static const u32 cfb_tab32[] = {
	53	0x00000000, 0xffffffff
	54	};
	55
	56	static void color_imageblit(const struct fb_image image, struct fb_info p,
	57	void *dst1, u32 start_index, u32 pitch_index)
	58	{
	59	/* Draw the penguin */
	60	u32 dst, dst2;
	61	u32 color = 0, val, shift;
	62	int i, n, bpp = p->var.bits_per_pixel;
	63	u32 null_bits = 32 - bpp;
	64	u32 palette = (u32 ) p->pseudo_palette;
	65	const u8 *src = image->data;
	66
	67	dst2 = dst1;
	68	for (i = image->height; i--; ) {
	69	n = image->width;
	70	dst = dst1;
	71	shift = 0;
	72	val = 0;
	73
	74	if (start_index) {
	75	u32 start_mask = ~(FB_SHIFT_HIGH(~(u32)0,
	76	start_index));
	77	val = *dst & start_mask;
	78	shift = start_index;
	79	}
	80	while (n--) {
	81	if (p->fix.visual == FB_VISUAL_TRUECOLOR \|\|
	82	p->fix.visual == FB_VISUAL_DIRECTCOLOR )
	83	color = palette[*src];
	84	else
	85	color = *src;
	86	color <<= FB_LEFT_POS(bpp);
	87	val \|= FB_SHIFT_HIGH(color, shift);
	88	if (shift >= null_bits) {
	89	*dst++ = val;
	90
	91	val = (shift == null_bits) ? 0 :
	92	FB_SHIFT_LOW(color, 32 - shift);
	93	}
	94	shift += bpp;
	95	shift &= (32 - 1);
	96	src++;
	97	}
	98	if (shift) {
	99	u32 end_mask = FB_SHIFT_HIGH(~(u32)0, shift);
	100
	101	*dst &= end_mask;
	102	*dst \|= val;
	103	}
	104	dst1 += p->fix.line_length;
	105	if (pitch_index) {
	106	dst2 += p->fix.line_length;
	107	dst1 = (u8 *)((long)dst2 & ~(sizeof(u32) - 1));
	108
	109	start_index += pitch_index;
	110	start_index &= 32 - 1;
	111	}
	112	}
	113	}
	114
	115	static void slow_imageblit(const struct fb_image image, struct fb_info p,
	116	void *dst1, u32 fgcolor, u32 bgcolor,
	117	u32 start_index, u32 pitch_index)
	118	{
	119	u32 shift, color = 0, bpp = p->var.bits_per_pixel;
	120	u32 dst, dst2;
	121	u32 val, pitch = p->fix.line_length;
	122	u32 null_bits = 32 - bpp;
	123	u32 spitch = (image->width+7)/8;
	124	const u8 src = image->data, s;
	125	u32 i, j, l;
	126
	127	dst2 = dst1;
	128	fgcolor <<= FB_LEFT_POS(bpp);
	129	bgcolor <<= FB_LEFT_POS(bpp);
	130
	131	for (i = image->height; i--; ) {
	132	shift = val = 0;
	133	l = 8;
	134	j = image->width;
	135	dst = dst1;
	136	s = src;
	137
	138	/* write leading bits */
	139	if (start_index) {
	140	u32 start_mask = ~(FB_SHIFT_HIGH(~(u32)0,start_index));
	141	val = *dst & start_mask;
	142	shift = start_index;
	143	}
	144
	145	while (j--) {
	146	l--;
	147	color = (*s & (1 << l)) ? fgcolor : bgcolor;
	148	val \|= FB_SHIFT_HIGH(color, shift);
	149
	150	/* Did the bitshift spill bits to the next long? */
	151	if (shift >= null_bits) {
	152	*dst++ = val;
	153	val = (shift == null_bits) ? 0 :
	154	FB_SHIFT_LOW(color,32 - shift);
	155	}
	156	shift += bpp;
	157	shift &= (32 - 1);
	158	if (!l) { l = 8; s++; };
	159	}
	160
	161	/* write trailing bits */
	162	if (shift) {
	163	u32 end_mask = FB_SHIFT_HIGH(~(u32)0, shift);
	164
	165	*dst &= end_mask;
	166	*dst \|= val;
	167	}
	168
	169	dst1 += pitch;
	170	src += spitch;
	171	if (pitch_index) {
	172	dst2 += pitch;
	173	dst1 = (u8 *)((long)dst2 & ~(sizeof(u32) - 1));
	174	start_index += pitch_index;
	175	start_index &= 32 - 1;
	176	}
	177
	178	}
	179	}
	180
	181	/*
	182	* fast_imageblit - optimized monochrome color expansion
	183	*
	184	* Only if: bits_per_pixel == 8, 16, or 32
	185	* image->width is divisible by pixel/dword (ppw);
	186	* fix->line_legth is divisible by 4;
	187	* beginning and end of a scanline is dword aligned
	188	*/
	189	static void fast_imageblit(const struct fb_image image, struct fb_info p,
	190	void *dst1, u32 fgcolor, u32 bgcolor)
	191	{
	192	u32 fgx = fgcolor, bgx = bgcolor, bpp = p->var.bits_per_pixel;
	193	u32 ppw = 32/bpp, spitch = (image->width + 7)/8;
	194	u32 bit_mask, end_mask, eorx, shift;
	195	const char s = image->data, src;
	196	u32 *dst;
	197	const u32 *tab = NULL;
	198	int i, j, k;
	199
	200	switch (bpp) {
	201	case 8:
	202	tab = cfb_tab8;
	203	break;
	204	case 16:
	205	tab = cfb_tab16;
	206	break;
	207	case 32:
	208	default:
	209	tab = cfb_tab32;
	210	break;
	211	}
	212
	213	for (i = ppw-1; i--; ) {
	214	fgx <<= bpp;
	215	bgx <<= bpp;
	216	fgx \|= fgcolor;
	217	bgx \|= bgcolor;
	218	}
	219
	220	bit_mask = (1 << ppw) - 1;
	221	eorx = fgx ^ bgx;
	222	k = image->width/ppw;
	223
	224	for (i = image->height; i--; ) {
	225	dst = dst1;
	226	shift = 8;
	227	src = s;
	228
	229	for (j = k; j--; ) {
	230	shift -= ppw;
	231	end_mask = tab[(*src >> shift) & bit_mask];
	232	*dst++ = (end_mask & eorx) ^ bgx;
	233	if (!shift) {
	234	shift = 8;
	235	src++;
	236	}
	237	}
	238	dst1 += p->fix.line_length;
	239	s += spitch;
	240	}
	241	}
	242
	243	void sys_imageblit(struct fb_info p, const struct fb_image image)
	244	{
	245	u32 fgcolor, bgcolor, start_index, bitstart, pitch_index = 0;
	246	u32 bpl = sizeof(u32), bpp = p->var.bits_per_pixel;
	247	u32 width = image->width;
	248	u32 dx = image->dx, dy = image->dy;
	249	void *dst1;
	250
	251	if (p->state != FBINFO_STATE_RUNNING)
	252	return;
	253
	254	bitstart = (dy * p->fix.line_length * 8) + (dx * bpp);
	255	start_index = bitstart & (32 - 1);
	256	pitch_index = (p->fix.line_length & (bpl - 1)) * 8;
	257
	258	bitstart /= 8;
	259	bitstart &= ~(bpl - 1);
	260	dst1 = (void __force *)p->screen_base + bitstart;
	261
	262	if (p->fbops->fb_sync)
	263	p->fbops->fb_sync(p);
	264
	265	if (image->depth == 1) {
	266	if (p->fix.visual == FB_VISUAL_TRUECOLOR \|\|
	267	p->fix.visual == FB_VISUAL_DIRECTCOLOR) {
	268	fgcolor = ((u32*)(p->pseudo_palette))[image->fg_color];
	269	bgcolor = ((u32*)(p->pseudo_palette))[image->bg_color];
	270	} else {
	271	fgcolor = image->fg_color;
	272	bgcolor = image->bg_color;
	273	}
	274
	275	if (32 % bpp == 0 && !start_index && !pitch_index &&
	276	((width & (32/bpp-1)) == 0) &&
	277	bpp >= 8 && bpp <= 32)
	278	fast_imageblit(image, p, dst1, fgcolor, bgcolor);
	279	else
	280	slow_imageblit(image, p, dst1, fgcolor, bgcolor,
	281	start_index, pitch_index);
	282	} else
	283	color_imageblit(image, p, dst1, start_index, pitch_index);
	284	}
	285
	286	EXPORT_SYMBOL(sys_imageblit);
	287
	288	MODULE_AUTHOR("Antonino Daplas <adaplas@pol.net>");
	289	MODULE_DESCRIPTION("1-bit/8-bit to 1-32 bit color expansion (sys-to-sys)");
	290	MODULE_LICENSE("GPL");
	291