3  *  ATI Mach64 CT/VT/GT/LT Cursor Support
21  * The hardware cursor definition requires 2 bits per pixel. The
22  * Cursor size reguardless of the visible cursor size is 64 pixels
23  * by 64 lines. The total memory required to define the cursor is
25  * must be in a contigiuos format. The 2 bit cursor code values are
33  *	Cursor Offset        64 pixels		 Actual Displayed Area
47  * cursor is specificed by CURS_HORZ_VERT_POSN. Care must be taken
48  * when the cursor hot spot is not the top left corner and the
49  * physical cursor position becomes negative. It will be displayed
50  * if either the horizontal or vertical cursor position is negative
52  * If x becomes negative the cursor manager must adjust the CURS_HORZ_OFFSET
56  * CUR_OFFSET must be adjusted to a point to the appropriate line in the cursor
61      *  Hardware Cursor support.
68 static int atyfb_cursor(struct fb_info *info, struct fb_cursor *cursor)  in atyfb_cursor()  argument
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()
99 		y = cursor->image.dy - cursor->hot.y - info->var.yoffset;  in atyfb_cursor()
107 		h = cursor->image.height;  in atyfb_cursor()
110 		 * In doublescan mode, the cursor location  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()
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()
148 	    unsigned int width = (cursor->image.width + 7) >> 3;  in atyfb_cursor()
149 	    unsigned int height = cursor->image.height;  in atyfb_cursor()
155 	    // Clear cursor image with 1010101010...  in atyfb_cursor()
165 			switch (cursor->rop) {  in atyfb_cursor()
180 			 * If cursor size is not a multiple of 8 characters  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()