1 // SPDX-License-Identifier: GPL-2.0
21  * The hardware cursor definition requires 2 bits per pixel. The
28  *	00 - pixel colour = CURSOR_CLR_0
29  *	01 - pixel colour = CURSOR_CLR_1
30  *	10 - pixel colour = transparent (current display pixel)
31  *	11 - pixel colour = 1's complement of current display pixel
36  *	      |<--------------->|	|	|
70 	struct atyfb_par *par = (struct atyfb_par *) info->par;  in atyfb_cursor()
75 	if (par->mmaped)  in atyfb_cursor()
76 		return -EPERM;  in atyfb_cursor()
78 	if (par->asleep)  in atyfb_cursor()
79 		return -EPERM;  in atyfb_cursor()
82 	if (cursor->enable)  in atyfb_cursor()
90 	if (cursor->set & FB_CUR_SETPOS) {  in atyfb_cursor()
91 		x = cursor->image.dx - cursor->hot.x - info->var.xoffset;  in atyfb_cursor()
93 			xoff = -x;  in atyfb_cursor()
99 		y = cursor->image.dy - cursor->hot.y - info->var.yoffset;  in atyfb_cursor()
101 			yoff = -y;  in atyfb_cursor()
107 		h = cursor->image.height;  in atyfb_cursor()
113                 if (par->crtc.gen_cntl & CRTC_DBL_SCAN_EN) {  in atyfb_cursor()
118 		aty_st_le32(CUR_OFFSET, (info->fix.smem_len >> 3) + (yoff << 1), par);  in atyfb_cursor()
120 			    ((u32) (64 - h + yoff) << 16) | xoff, par);  in atyfb_cursor()
125 	if (cursor->set & FB_CUR_SETCMAP) {  in atyfb_cursor()
128 		fg_idx = cursor->image.fg_color;  in atyfb_cursor()
129 		bg_idx = cursor->image.bg_color;  in atyfb_cursor()
131 		fg = ((info->cmap.red[fg_idx] & 0xff) << 24) |  in atyfb_cursor()
132 		     ((info->cmap.green[fg_idx] & 0xff) << 16) |  in atyfb_cursor()
133 		     ((info->cmap.blue[fg_idx] & 0xff) << 8) | 0xff;  in atyfb_cursor()
135 		bg = ((info->cmap.red[bg_idx] & 0xff) << 24) |  in atyfb_cursor()
136 		     ((info->cmap.green[bg_idx] & 0xff) << 16) |  in atyfb_cursor()
137 		     ((info->cmap.blue[bg_idx] & 0xff) << 8);  in atyfb_cursor()
144 	if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {  in atyfb_cursor()
145 	    u8 *src = (u8 *)cursor->image.data;  in atyfb_cursor()
146 	    u8 *msk = (u8 *)cursor->mask;  in atyfb_cursor()
147 	    u8 __iomem *dst = (u8 __iomem *)info->sprite.addr;  in atyfb_cursor()
148 	    unsigned int width = (cursor->image.width + 7) >> 3;  in atyfb_cursor()
149 	    unsigned int height = cursor->image.height;  in atyfb_cursor()
150 	    unsigned int align = info->sprite.scan_align;  in atyfb_cursor()  local
158 	    offset = align - width*2;  in atyfb_cursor()
165 			switch (cursor->rop) {  in atyfb_cursor()
167 			    // Upper 4 bits of mask data  in atyfb_cursor()
168 			    l = cursor_bits_lookup[(b ^ m) >> 4] |  in atyfb_cursor()
169 			    // Lower 4 bits of mask  in atyfb_cursor()
173 			    // Upper 4 bits of mask data  in atyfb_cursor()
174 			    l = cursor_bits_lookup[(b & m) >> 4] |  in atyfb_cursor()
175 			    // Lower 4 bits of mask  in atyfb_cursor()
183 			if ((j + 1) * 8 > cursor->image.width) {  in atyfb_cursor()
185 				    (1 << ((cursor->image.width & 7) * 2)) - 1);  in atyfb_cursor()
201 	info->fix.smem_len -= PAGE_SIZE;  in aty_init_cursor()
204 	addr = (unsigned long) info->screen_base - 0x800000 + info->fix.smem_len;  in aty_init_cursor()
205 	info->sprite.addr = (u8 *) addr;  in aty_init_cursor()
208 	addr = info->fix.smem_start - 0x800000 + info->fix.smem_len;  in aty_init_cursor()
209 	info->sprite.addr = (u8 *) ioremap(addr, 1024);  in aty_init_cursor()
211 	addr = (unsigned long) info->screen_base + info->fix.smem_len;  in aty_init_cursor()
212 	info->sprite.addr = (u8 *) addr;  in aty_init_cursor()
215 	if (!info->sprite.addr)  in aty_init_cursor()
216 		return -ENXIO;  in aty_init_cursor()
217 	info->sprite.size = PAGE_SIZE;  in aty_init_cursor()
218 	info->sprite.scan_align = 16;	/* Scratch pad 64 bytes wide */  in aty_init_cursor()
219 	info->sprite.buf_align = 16; 	/* and 64 lines tall. */  in aty_init_cursor()
220 	info->sprite.flags = FB_PIXMAP_IO;  in aty_init_cursor()
222 	atyfb_ops->fb_cursor = atyfb_cursor;  in aty_init_cursor()