kernel/drivers/staging/sm750fb/sm750_cursor.c

   1 #include<linux/module.h>
   2 #include<linux/kernel.h>
   3 #include<linux/errno.h>
   4 #include<linux/string.h>
   5 #include<linux/mm.h>
   6 #include<linux/slab.h>
   7 #include<linux/delay.h>
   8 #include<linux/fb.h>
   9 #include<linux/ioport.h>
  10 #include<linux/init.h>
  11 #include<linux/pci.h>
  12 #include<linux/vmalloc.h>
  13 #include<linux/pagemap.h>
  14 #include <linux/console.h>
  15 #include<linux/platform_device.h>
  16 #include<linux/screen_info.h>
  17
  18 #include "sm750.h"
  19 #include "sm750_help.h"
  20 #include "sm750_cursor.h"
  21
  22
  23 #define PEEK32(addr) \
  24 readl(cursor->mmio + (addr))
  25
  26 #define POKE32(addr,data) \
  27 writel((data),cursor->mmio + (addr))
  28
  29 /* cursor control for voyager and 718/750*/
  30 #define HWC_ADDRESS                         0x0
  31 #define HWC_ADDRESS_ENABLE                  31:31
  32 #define HWC_ADDRESS_ENABLE_DISABLE          0
  33 #define HWC_ADDRESS_ENABLE_ENABLE           1
  34 #define HWC_ADDRESS_EXT                     27:27
  35 #define HWC_ADDRESS_EXT_LOCAL               0
  36 #define HWC_ADDRESS_EXT_EXTERNAL            1
  37 #define HWC_ADDRESS_CS                      26:26
  38 #define HWC_ADDRESS_CS_0                    0
  39 #define HWC_ADDRESS_CS_1                    1
  40 #define HWC_ADDRESS_ADDRESS                 25:0
  41
  42 #define HWC_LOCATION                        0x4
  43 #define HWC_LOCATION_TOP                    27:27
  44 #define HWC_LOCATION_TOP_INSIDE             0
  45 #define HWC_LOCATION_TOP_OUTSIDE            1
  46 #define HWC_LOCATION_Y                      26:16
  47 #define HWC_LOCATION_LEFT                   11:11
  48 #define HWC_LOCATION_LEFT_INSIDE            0
  49 #define HWC_LOCATION_LEFT_OUTSIDE           1
  50 #define HWC_LOCATION_X                      10:0
  51
  52 #define HWC_COLOR_12                        0x8
  53 #define HWC_COLOR_12_2_RGB565               31:16
  54 #define HWC_COLOR_12_1_RGB565               15:0
  55
  56 #define HWC_COLOR_3                         0xC
  57 #define HWC_COLOR_3_RGB565                  15:0
  58
  59
  60 /* hw_cursor_xxx works for voyager,718 and 750 */
  61 void hw_cursor_enable(struct lynx_cursor * cursor)
  62 {
  63         u32 reg;
  64         reg = FIELD_VALUE(0,HWC_ADDRESS,ADDRESS,cursor->offset)|
  65                         FIELD_SET(0,HWC_ADDRESS,EXT,LOCAL)|
  66                         FIELD_SET(0,HWC_ADDRESS,ENABLE,ENABLE);
  67         POKE32(HWC_ADDRESS,reg);
  68 }
  69 void hw_cursor_disable(struct lynx_cursor * cursor)
  70 {
  71         POKE32(HWC_ADDRESS,0);
  72 }
  73
  74 void hw_cursor_setSize(struct lynx_cursor * cursor,
  75                                                 int w,int h)
  76 {
  77         cursor->w = w;
  78         cursor->h = h;
  79 }
  80 void hw_cursor_setPos(struct lynx_cursor * cursor,
  81                                                 int x,int y)
  82 {
  83         u32 reg;
  84         reg = FIELD_VALUE(0,HWC_LOCATION,Y,y)|
  85                         FIELD_VALUE(0,HWC_LOCATION,X,x);
  86         POKE32(HWC_LOCATION,reg);
  87 }
  88 void hw_cursor_setColor(struct lynx_cursor * cursor,
  89                                                 u32 fg,u32 bg)
  90 {
  91         POKE32(HWC_COLOR_12,(fg<<16)|(bg&0xffff));
  92         POKE32(HWC_COLOR_3,0xffe0);
  93 }
  94
  95 void hw_cursor_setData(struct lynx_cursor * cursor,
  96                         u16 rop,const u8* pcol,const u8* pmsk)
  97 {
  98         int i,j,count,pitch,offset;
  99         u8 color,mask,opr;
 100         u16 data;
 101         void __iomem *pbuffer, *pstart;
 102
 103         /*  in byte*/
 104         pitch = cursor->w >> 3;
 105
 106         /* in byte      */
 107         count = pitch * cursor->h;
 108
 109         /* in byte */
 110         offset = cursor->maxW * 2 / 8;
 111
 112         data = 0;
 113         pstart = cursor->vstart;
 114         pbuffer = pstart;
 115
 116 /*
 117         if(odd &1){
 118                 hw_cursor_setData2(cursor,rop,pcol,pmsk);
 119         }
 120         odd++;
 121         if(odd > 0xfffffff0)
 122                 odd=0;
 123 */
 124
 125         for(i=0;i<count;i++)
 126         {
 127                 color = *pcol++;
 128                 mask = *pmsk++;
 129                 data = 0;
 130
 131                 /* either method below works well,
 132                  * but method 2 shows no lag
 133                  * and method 1 seems a bit wrong*/
 134 #if 0
 135                 if(rop == ROP_XOR)
 136                         opr = mask ^ color;
 137                 else
 138                         opr = mask & color;
 139
 140                 for(j=0;j<8;j++)
 141                 {
 142
 143                         if(opr & (0x80 >> j))
 144                         {       //use fg color,id = 2
 145                                 data |= 2 << (j*2);
 146                         }else{
 147                                 //use bg color,id = 1
 148                                 data |= 1 << (j*2);
 149                         }
 150                 }
 151 #else
 152                 for(j=0;j<8;j++){
 153                         if(mask & (0x80>>j)){
 154                                 if(rop == ROP_XOR)
 155                                         opr = mask ^ color;
 156                                 else
 157                                         opr = mask & color;
 158
 159                                 /* 2 stands for forecolor and 1 for backcolor */
 160                                 data |= ((opr & (0x80>>j))?2:1)<<(j*2);
 161                         }
 162                 }
 163 #endif
 164                 iowrite16(data, pbuffer);
 165
 166                 /* assume pitch is 1,2,4,8,...*/
 167 #if 0
 168                 if(!((i+1)&(pitch-1)))   /* below line equal to is line */
 169 #else
 170                 if((i+1) % pitch == 0)
 171 #endif
 172                 {
 173                         /* need a return */
 174                         pstart += offset;
 175                         pbuffer = pstart;
 176                 }else{
 177                         pbuffer += sizeof(u16);
 178                 }
 179
 180         }
 181
 182
 183 }
 184
 185
 186 void hw_cursor_setData2(struct lynx_cursor * cursor,
 187                         u16 rop,const u8* pcol,const u8* pmsk)
 188 {
 189         int i,j,count,pitch,offset;
 190         u8 color, mask;
 191         u16 data;
 192         void __iomem *pbuffer, *pstart;
 193
 194         /*  in byte*/
 195         pitch = cursor->w >> 3;
 196
 197         /* in byte      */
 198         count = pitch * cursor->h;
 199
 200         /* in byte */
 201         offset = cursor->maxW * 2 / 8;
 202
 203         data = 0;
 204         pstart = cursor->vstart;
 205         pbuffer = pstart;
 206
 207         for(i=0;i<count;i++)
 208         {
 209                 color = *pcol++;
 210                 mask = *pmsk++;
 211                 data = 0;
 212
 213                 /* either method below works well, but method 2 shows no lag */
 214 #if 0
 215                 if(rop == ROP_XOR)
 216                         opr = mask ^ color;
 217                 else
 218                         opr = mask & color;
 219
 220                 for(j=0;j<8;j++)
 221                 {
 222
 223                         if(opr & (0x80 >> j))
 224                         {       //use fg color,id = 2
 225                                 data |= 2 << (j*2);
 226                         }else{
 227                                 //use bg color,id = 1
 228                                 data |= 1 << (j*2);
 229                         }
 230                 }
 231 #else
 232                 for(j=0;j<8;j++){
 233                         if(mask & (1<<j))
 234                                 data |= ((color & (1<<j))?1:2)<<(j*2);
 235                 }
 236 #endif
 237                 iowrite16(data, pbuffer);
 238
 239                 /* assume pitch is 1,2,4,8,...*/
 240                 if(!(i&(pitch-1)))
 241                 //if((i+1) % pitch == 0)
 242                 {
 243                         /* need a return */
 244                         pstart += offset;
 245                         pbuffer = pstart;
 246                 }else{
 247                         pbuffer += sizeof(u16);
 248                 }
 249
 250         }
 251 }