#include<linux/module.h>
#include<linux/kernel.h>
#include<linux/errno.h>
#include<linux/string.h>
#include<linux/mm.h>
#include<linux/slab.h>
#include<linux/delay.h>
#include<linux/fb.h>
#include<linux/ioport.h>
#include<linux/init.h>
#include<linux/pci.h>
#include<linux/vmalloc.h>
#include<linux/pagemap.h>
#include <linux/console.h>
#include<linux/platform_device.h>
#include<linux/screen_info.h>
#include "sm750.h"
#include "sm750_help.h"
#include "sm750_cursor.h"
#define PEEK32(addr) \
readl(cursor->mmio + (addr))
#define POKE32(addr,data) \
writel((data),cursor->mmio + (addr))
/* cursor control for voyager and 718/750*/
#define HWC_ADDRESS 0x0
#define HWC_ADDRESS_ENABLE 31:31
#define HWC_ADDRESS_ENABLE_DISABLE 0
#define HWC_ADDRESS_ENABLE_ENABLE 1
#define HWC_ADDRESS_EXT 27:27
#define HWC_ADDRESS_EXT_LOCAL 0
#define HWC_ADDRESS_EXT_EXTERNAL 1
#define HWC_ADDRESS_CS 26:26
#define HWC_ADDRESS_CS_0 0
#define HWC_ADDRESS_CS_1 1
#define HWC_ADDRESS_ADDRESS 25:0
#define HWC_LOCATION 0x4
#define HWC_LOCATION_TOP 27:27
#define HWC_LOCATION_TOP_INSIDE 0
#define HWC_LOCATION_TOP_OUTSIDE 1
#define HWC_LOCATION_Y 26:16
#define HWC_LOCATION_LEFT 11:11
#define HWC_LOCATION_LEFT_INSIDE 0
#define HWC_LOCATION_LEFT_OUTSIDE 1
#define HWC_LOCATION_X 10:0
#define HWC_COLOR_12 0x8
#define HWC_COLOR_12_2_RGB565 31:16
#define HWC_COLOR_12_1_RGB565 15:0
#define HWC_COLOR_3 0xC
#define HWC_COLOR_3_RGB565 15:0
/* hw_cursor_xxx works for voyager,718 and 750 */
void hw_cursor_enable(struct lynx_cursor * cursor)
{
u32 reg;
reg = FIELD_VALUE(0,HWC_ADDRESS,ADDRESS,cursor->offset)|
FIELD_SET(0,HWC_ADDRESS,EXT,LOCAL)|
FIELD_SET(0,HWC_ADDRESS,ENABLE,ENABLE);
POKE32(HWC_ADDRESS,reg);
}
void hw_cursor_disable(struct lynx_cursor * cursor)
{
POKE32(HWC_ADDRESS,0);
}
void hw_cursor_setSize(struct lynx_cursor * cursor,
int w,int h)
{
cursor->w = w;
cursor->h = h;
}
void hw_cursor_setPos(struct lynx_cursor * cursor,
int x,int y)
{
u32 reg;
reg = FIELD_VALUE(0,HWC_LOCATION,Y,y)|
FIELD_VALUE(0,HWC_LOCATION,X,x);
POKE32(HWC_LOCATION,reg);
}
void hw_cursor_setColor(struct lynx_cursor * cursor,
u32 fg,u32 bg)
{
POKE32(HWC_COLOR_12,(fg<<16)|(bg&0xffff));
POKE32(HWC_COLOR_3,0xffe0);
}
void hw_cursor_setData(struct lynx_cursor * cursor,
u16 rop,const u8* pcol,const u8* pmsk)
{
int i,j,count,pitch,offset;
u8 color,mask,opr;
u16 data;
u16 * pbuffer,*pstart;
static ulong odd = 0;
/* in byte*/
pitch = cursor->w >> 3;
/* in byte */
count = pitch * cursor->h;
/* in ushort */
offset = cursor->maxW * 2 / 8 / 2;
data = 0;
pstart = (u16 *)cursor->vstart;
pbuffer = pstart;
/*
if(odd &1){
hw_cursor_setData2(cursor,rop,pcol,pmsk);
}
odd++;
if(odd > 0xfffffff0)
odd=0;
*/
for(i=0;i<count;i++)
{
color = *pcol++;
mask = *pmsk++;
data = 0;
/* either method below works well,
* but method 2 shows no lag
* and method 1 seems a bit wrong*/
#if 0
if(rop == ROP_XOR)
opr = mask ^ color;
else
opr = mask & color;
for(j=0;j<8;j++)
{
if(opr & (0x80 >> j))
{ //use fg color,id = 2
data |= 2 << (j*2);
}else{
//use bg color,id = 1
data |= 1 << (j*2);
}
}
#else
for(j=0;j<8;j++){
if(mask & (0x80>>j)){
if(rop == ROP_XOR)
opr = mask ^ color;
else
opr = mask & color;
/* 2 stands for forecolor and 1 for backcolor */
data |= ((opr & (0x80>>j))?2:1)<<(j*2);
}
}
#endif
*pbuffer = data;
/* assume pitch is 1,2,4,8,...*/
#if 0
if(!((i+1)&(pitch-1))) /* below line equal to is line */
#else
if((i+1) % pitch == 0)
#endif
{
/* need a return */
pstart += offset;
pbuffer = pstart;
}else{
pbuffer++;
}
}
}
void hw_cursor_setData2(struct lynx_cursor * cursor,
u16 rop,const u8* pcol,const u8* pmsk)
{
int i,j,count,pitch,offset;
u8 color,mask,opr;
u16 data;
u16 * pbuffer,*pstart;
/* in byte*/
pitch = cursor->w >> 3;
/* in byte */
count = pitch * cursor->h;
/* in ushort */
offset = cursor->maxW * 2 / 8 / 2;
data = 0;
pstart = (u16 *)cursor->vstart;
pbuffer = pstart;
for(i=0;i<count;i++)
{
color = *pcol++;
mask = *pmsk++;
data = 0;
/* either method below works well, but method 2 shows no lag */
#if 0
if(rop == ROP_XOR)
opr = mask ^ color;
else
opr = mask & color;
for(j=0;j<8;j++)
{
if(opr & (0x80 >> j))
{ //use fg color,id = 2
data |= 2 << (j*2);
}else{
//use bg color,id = 1
data |= 1 << (j*2);
}
}
#else
for(j=0;j<8;j++){
if(mask & (1<<j))
data |= ((color & (1<<j))?1:2)<<(j*2);
}
#endif
*pbuffer = data;
/* assume pitch is 1,2,4,8,...*/
if(!(i&(pitch-1)))
//if((i+1) % pitch == 0)
{
/* need a return */
pstart += offset;
pbuffer = pstart;
}else{
pbuffer++;
}
}
return 0;
}
