radeon_vid.c

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	} while (0)

static uint32_t radeon_vid_get_dbpp( void )
{
  uint32_t dbpp,retval;
  dbpp = (INREG(CRTC_GEN_CNTL)>>8)& 0xF;
  switch(dbpp)
  {
    case DST_8BPP: retval = 8; break;
    case DST_15BPP: retval = 15; break;
    case DST_16BPP: retval = 16; break;
    case DST_24BPP: retval = 24; break;
    default: retval=32; break;
  }
  return retval;
}

static int radeon_is_dbl_scan( void )
{
  return (INREG(CRTC_GEN_CNTL))&CRTC_DBL_SCAN_EN;
}

static int radeon_is_interlace( void )
{
  return (INREG(CRTC_GEN_CNTL))&CRTC_INTERLACE_EN;
}

static __inline__ void radeon_engine_flush ( void )
{
	int i;

	/* initiate flush */
	OUTREGP(RB2D_DSTCACHE_CTLSTAT, RB2D_DC_FLUSH_ALL,
	        ~RB2D_DC_FLUSH_ALL);

	for (i=0; i < 2000000; i++) {
		if (!(INREG(RB2D_DSTCACHE_CTLSTAT) & RB2D_DC_BUSY))
			break;
	}
}


static __inline__ void _radeon_fifo_wait (int entries)
{
	int i;

	for (i=0; i<2000000; i++)
		if ((INREG(RBBM_STATUS) & 0x7f) >= entries)
			return;
}


static __inline__ void _radeon_engine_idle ( void )
{
	int i;

	/* ensure FIFO is empty before waiting for idle */
	_radeon_fifo_wait (64);

	for (i=0; i<2000000; i++) {
		if (((INREG(RBBM_STATUS) & GUI_ACTIVE)) == 0) {
			radeon_engine_flush ();
			return;
		}
	}
}

#define radeon_engine_idle()		_radeon_engine_idle()
#define radeon_fifo_wait(entries)	_radeon_fifo_wait(entries)

#if 0
static void __init radeon_vid_save_state( void )
{
  size_t i;
  for(i=0;i<sizeof(vregs)/sizeof(video_registers_t);i++)
	vregs[i].value = INREG(vregs[i].name);
}

static void __exit radeon_vid_restore_state( void )
{
  size_t i;
  radeon_fifo_wait(2);
  OUTREG(OV0_REG_LOAD_CNTL,		REG_LD_CTL_LOCK);
  radeon_engine_idle();
  while(!(INREG(OV0_REG_LOAD_CNTL)&REG_LD_CTL_LOCK_READBACK));
  radeon_fifo_wait(15);
  for(i=0;i<sizeof(vregs)/sizeof(video_registers_t);i++)
  {
	radeon_fifo_wait(1);
	OUTREG(vregs[i].name,vregs[i].value);
  }
  OUTREG(OV0_REG_LOAD_CNTL,		0);
}
#endif
#ifdef DEBUG
static void radeon_vid_dump_regs( void )
{
  size_t i;
  printk(RVID_MSG"*** Begin of OV0 registers dump ***\n");
  for(i=0;i<sizeof(vregs)/sizeof(video_registers_t);i++)
	printk(RVID_MSG"%s = %08X\n",vregs[i].sname,INREG(vregs[i].name));
  printk(RVID_MSG"*** End of OV0 registers dump ***\n");
}
#endif

#ifdef RADEON_FPU
/* Reference color space transform data */
typedef struct tagREF_TRANSFORM
{
	float RefLuma;
	float RefRCb;
	float RefRCr;
	float RefGCb;
	float RefGCr;
	float RefBCb;
	float RefBCr;
} REF_TRANSFORM;

/* Parameters for ITU-R BT.601 and ITU-R BT.709 colour spaces */
REF_TRANSFORM trans[2] =
{
	{1.1678, 0.0, 1.6007, -0.3929, -0.8154, 2.0232, 0.0}, /* BT.601 */
	{1.1678, 0.0, 1.7980, -0.2139, -0.5345, 2.1186, 0.0}  /* BT.709 */
};
/****************************************************************************
 * SetTransform                                                             *
 *  Function: Calculates and sets color space transform from supplied       *
 *            reference transform, gamma, brightness, contrast, hue and     *
 *            saturation.                                                   *
 *    Inputs: bright - brightness                                           *
 *            cont - contrast                                               *
 *            sat - saturation                                              *
 *            hue - hue                                                     *
 *            ref - index to the table of refernce transforms               *
 *   Outputs: NONE                                                          *
 ****************************************************************************/

static void radeon_set_transform(float bright, float cont, float sat,
				 float hue, unsigned ref)
{
	float OvHueSin, OvHueCos;
	float CAdjLuma, CAdjOff;
	float CAdjRCb, CAdjRCr;
	float CAdjGCb, CAdjGCr;
	float CAdjBCb, CAdjBCr;
	float OvLuma, OvROff, OvGOff, OvBOff;
	float OvRCb, OvRCr;
	float OvGCb, OvGCr;
	float OvBCb, OvBCr;
	float Loff = 64.0;
	float Coff = 512.0f;

	u32 dwOvLuma, dwOvROff, dwOvGOff, dwOvBOff;
	u32 dwOvRCb, dwOvRCr;
	u32 dwOvGCb, dwOvGCr;
	u32 dwOvBCb, dwOvBCr;

	if (ref >= 2) return;

	OvHueSin = sin((double)hue);
	OvHueCos = cos((double)hue);

	CAdjLuma = cont * trans[ref].RefLuma;
	CAdjOff = cont * trans[ref].RefLuma * bright * 1023.0;

	CAdjRCb = sat * -OvHueSin * trans[ref].RefRCr;
	CAdjRCr = sat * OvHueCos * trans[ref].RefRCr;
	CAdjGCb = sat * (OvHueCos * trans[ref].RefGCb - OvHueSin * trans[ref].RefGCr);
	CAdjGCr = sat * (OvHueSin * trans[ref].RefGCb + OvHueCos * trans[ref].RefGCr);
	CAdjBCb = sat * OvHueCos * trans[ref].RefBCb;
	CAdjBCr = sat * OvHueSin * trans[ref].RefBCb;
    
#if 0 /* default constants */
        CAdjLuma = 1.16455078125;

	CAdjRCb = 0.0;
	CAdjRCr = 1.59619140625;
	CAdjGCb = -0.39111328125;
	CAdjGCr = -0.8125;
	CAdjBCb = 2.01708984375;
	CAdjBCr = 0;
#endif
	OvLuma = CAdjLuma;
	OvRCb = CAdjRCb;
	OvRCr = CAdjRCr;
	OvGCb = CAdjGCb;
	OvGCr = CAdjGCr;
	OvBCb = CAdjBCb;
	OvBCr = CAdjBCr;
	OvROff = CAdjOff -
		OvLuma * Loff - (OvRCb + OvRCr) * Coff;
	OvGOff = CAdjOff - 
		OvLuma * Loff - (OvGCb + OvGCr) * Coff;
	OvBOff = CAdjOff - 
		OvLuma * Loff - (OvBCb + OvBCr) * Coff;
#if 0 /* default constants */
	OvROff = -888.5;
	OvGOff = 545;
	OvBOff = -1104;
#endif 
   
	dwOvROff = ((int)(OvROff * 2.0)) & 0x1fff;
	dwOvGOff = (int)(OvGOff * 2.0) & 0x1fff;
	dwOvBOff = (int)(OvBOff * 2.0) & 0x1fff;
	if(!IsR200)
	{
		dwOvLuma =(((int)(OvLuma * 2048.0))&0x7fff)<<17;
		dwOvRCb = (((int)(OvRCb * 2048.0))&0x7fff)<<1;
		dwOvRCr = (((int)(OvRCr * 2048.0))&0x7fff)<<17;
		dwOvGCb = (((int)(OvGCb * 2048.0))&0x7fff)<<1;
		dwOvGCr = (((int)(OvGCr * 2048.0))&0x7fff)<<17;
		dwOvBCb = (((int)(OvBCb * 2048.0))&0x7fff)<<1;
		dwOvBCr = (((int)(OvBCr * 2048.0))&0x7fff)<<17;
	}
	else
	{
		dwOvLuma = (((int)(OvLuma * 256.0))&0x7ff)<<20;
		dwOvRCb = (((int)(OvRCb * 256.0))&0x7ff)<<4;
		dwOvRCr = (((int)(OvRCr * 256.0))&0x7ff)<<20;
		dwOvGCb = (((int)(OvGCb * 256.0))&0x7ff)<<4;
		dwOvGCr = (((int)(OvGCr * 256.0))&0x7ff)<<20;
		dwOvBCb = (((int)(OvBCb * 256.0))&0x7ff)<<4;
		dwOvBCr = (((int)(OvBCr * 256.0))&0x7ff)<<20;
	}

	OUTREG(OV0_LIN_TRANS_A, dwOvRCb | dwOvLuma);
	OUTREG(OV0_LIN_TRANS_B, dwOvROff | dwOvRCr);
	OUTREG(OV0_LIN_TRANS_C, dwOvGCb | dwOvLuma);
	OUTREG(OV0_LIN_TRANS_D, dwOvGOff | dwOvGCr);
	OUTREG(OV0_LIN_TRANS_E, dwOvBCb | dwOvLuma);
	OUTREG(OV0_LIN_TRANS_F, dwOvBOff | dwOvBCr);
}
#endif

#ifndef RAGE128
/* Gamma curve definition */
typedef struct 
{
	unsigned int gammaReg;
	unsigned int gammaSlope;
	unsigned int gammaOffset;
}GAMMA_SETTINGS;

/* Recommended gamma curve parameters */
GAMMA_SETTINGS r200_def_gamma[18] = 
{
	{OV0_GAMMA_0_F, 0x100, 0x0000},
	{OV0_GAMMA_10_1F, 0x100, 0x0020},
	{OV0_GAMMA_20_3F, 0x100, 0x0040},
	{OV0_GAMMA_40_7F, 0x100, 0x0080},
	{OV0_GAMMA_80_BF, 0x100, 0x0100},
	{OV0_GAMMA_C0_FF, 0x100, 0x0100},
	{OV0_GAMMA_100_13F, 0x100, 0x0200},
	{OV0_GAMMA_140_17F, 0x100, 0x0200},
	{OV0_GAMMA_180_1BF, 0x100, 0x0300},
	{OV0_GAMMA_1C0_1FF, 0x100, 0x0300},
	{OV0_GAMMA_200_23F, 0x100, 0x0400},
	{OV0_GAMMA_240_27F, 0x100, 0x0400},
	{OV0_GAMMA_280_2BF, 0x100, 0x0500},
	{OV0_GAMMA_2C0_2FF, 0x100, 0x0500},
	{OV0_GAMMA_300_33F, 0x100, 0x0600},
	{OV0_GAMMA_340_37F, 0x100, 0x0600},
	{OV0_GAMMA_380_3BF, 0x100, 0x0700},
	{OV0_GAMMA_3C0_3FF, 0x100, 0x0700}
};

GAMMA_SETTINGS r100_def_gamma[6] = 
{
	{OV0_GAMMA_0_F, 0x100, 0x0000},
	{OV0_GAMMA_10_1F, 0x100, 0x0020},
	{OV0_GAMMA_20_3F, 0x100, 0x0040},
	{OV0_GAMMA_40_7F, 0x100, 0x0080},
	{OV0_GAMMA_380_3BF, 0x100, 0x0100},
	{OV0_GAMMA_3C0_3FF, 0x100, 0x0100}
};

static void make_default_gamma_correction( void )
{
    size_t i;
    if(!IsR200){
	OUTREG(OV0_LIN_TRANS_A, 0x12A00000);
	OUTREG(OV0_LIN_TRANS_B, 0x199018FE);
	OUTREG(OV0_LIN_TRANS_C, 0x12A0F9B0);
	OUTREG(OV0_LIN_TRANS_D, 0xF2F0043B);
	OUTREG(OV0_LIN_TRANS_E, 0x12A02050);
	OUTREG(OV0_LIN_TRANS_F, 0x0000174E);
	for(i=0; i<6; i++){
		OUTREG(r100_def_gamma[i].gammaReg,
		       (r100_def_gamma[i].gammaSlope<<16) |
		        r100_def_gamma[i].gammaOffset);
	}
    }
    else{
	OUTREG(OV0_LIN_TRANS_A, 0x12a00000);
	OUTREG(OV0_LIN_TRANS_B, 0x1990190e);
	OUTREG(OV0_LIN_TRANS_C, 0x12a0f9c0);
	OUTREG(OV0_LIN_TRANS_D, 0xf3000442);
	OUTREG(OV0_LIN_TRANS_E, 0x12a02040);
	OUTREG(OV0_LIN_TRANS_F, 0x175f);

	/* Default Gamma,
	   Of 18 segments for gamma cure, all segments in R200 are programmable,
	   while only lower 4 and upper 2 segments are programmable in Radeon*/
	for(i=0; i<18; i++){
		OUTREG(r200_def_gamma[i].gammaReg,
		       (r200_def_gamma[i].gammaSlope<<16) |
		        r200_def_gamma[i].gammaOffset);
	}
    }
}
#endif

static void radeon_vid_stop_video( void )
{
    radeon_engine_idle();
    OUTREG(OV0_SCALE_CNTL, SCALER_SOFT_RESET);
    OUTREG(OV0_EXCLUSIVE_HORZ, 0);
    OUTREG(OV0_AUTO_FLIP_CNTL, 0);   /* maybe */
    OUTREG(OV0_FILTER_CNTL, FILTER_HARDCODED_COEF);
    OUTREG(OV0_KEY_CNTL, GRAPHIC_KEY_FN_NE);
    OUTREG(OV0_TEST, 0);
}

static void radeon_vid_display_video( void )
{
    int bes_flags;
    radeon_fifo_wait(2);
    OUTREG(OV0_REG_LOAD_CNTL,		REG_LD_CTL_LOCK);
    radeon_engine_idle();
    while(!(INREG(OV0_REG_LOAD_CNTL)&REG_LD_CTL_LOCK_READBACK));
    radeon_fifo_wait(15);
    OUTREG(OV0_AUTO_FLIP_CNTL,OV0_AUTO_FLIP_CNTL_SOFT_BUF_ODD);
    OUTREG(OV0_AUTO_FLIP_CNTL,(INREG(OV0_AUTO_FLIP_CNTL)^OV0_AUTO_FLIP_CNTL_SOFT_EOF_TOGGLE));
    OUTREG(OV0_AUTO_FLIP_CNTL,(INREG(OV0_AUTO_FLIP_CNTL)^OV0_AUTO_FLIP_CNTL_SOFT_EOF_TOGGLE));

    OUTREG(OV0_DEINTERLACE_PATTERN,besr.deinterlace_pattern);
#ifdef RAGE128
    OUTREG(OV0_COLOUR_CNTL, (besr.brightness & 0x7f) |
			    (besr.saturation << 8) |
			    (besr.saturation << 16));
#endif
    radeon_fifo_wait(2);
    if(besr.ckey_on)
    {
	OUTREG(OV0_GRAPHICS_KEY_MSK, besr.graphics_key_msk);
	OUTREG(OV0_GRAPHICS_KEY_CLR, besr.graphics_key_clr);
	OUTREG(OV0_KEY_CNTL,GRAPHIC_KEY_FN_EQ|VIDEO_KEY_FN_FALSE|CMP_MIX_OR);
    }
    else
    {
	OUTREG(OV0_GRAPHICS_KEY_MSK, 0ULL);
	OUTREG(OV0_GRAPHICS_KEY_CLR, 0ULL);
	OUTREG(OV0_KEY_CNTL,GRAPHIC_KEY_FN_NE);
    }

    OUTREG(OV0_H_INC,			besr.h_inc);
    OUTREG(OV0_STEP_BY,			besr.step_by);
    OUTREG(OV0_Y_X_START,		besr.y_x_start);
    OUTREG(OV0_Y_X_END,			besr.y_x_end);
    OUTREG(OV0_V_INC,			besr.v_inc);
    OUTREG(OV0_P1_BLANK_LINES_AT_TOP,	besr.p1_blank_lines_at_top);
    OUTREG(OV0_P23_BLANK_LINES_AT_TOP,	besr.p23_blank_lines_at_top);
    OUTREG(OV0_VID_BUF_PITCH0_VALUE,	besr.vid_buf_pitch0_value);
    OUTREG(OV0_VID_BUF_PITCH1_VALUE,	besr.vid_buf_pitch1_value);
    OUTREG(OV0_P1_X_START_END,		besr.p1_x_start_end);
    OUTREG(OV0_P2_X_START_END,		besr.p2_x_start_end);
    OUTREG(OV0_P3_X_START_END,		besr.p3_x_start_end);
#ifdef RADEON
    OUTREG(OV0_BASE_ADDR,		besr.base_addr);
#endif
    OUTREG(OV0_VID_BUF0_BASE_ADRS,	besr.vid_buf0_base_adrs);
    OUTREG(OV0_VID_BUF1_BASE_ADRS,	besr.vid_buf1_base_adrs);
    OUTREG(OV0_VID_BUF2_BASE_ADRS,	besr.vid_buf2_base_adrs);
    radeon_fifo_wait(9);
    OUTREG(OV0_VID_BUF3_BASE_ADRS,	besr.vid_buf3_base_adrs);
    OUTREG(OV0_VID_BUF4_BASE_ADRS,	besr.vid_buf4_base_adrs);
    OUTREG(OV0_VID_BUF5_BASE_ADRS,	besr.vid_buf5_base_adrs);
    OUTREG(OV0_P1_V_ACCUM_INIT,		besr.p1_v_accum_init);
    OUTREG(OV0_P1_H_ACCUM_INIT,		besr.p1_h_accum_init);
    OUTREG(OV0_P23_H_ACCUM_INIT,	besr.p23_h_accum_init);
    OUTREG(OV0_P23_V_ACCUM_INIT,	besr.p23_v_accum_init);

#ifdef RADEON
    bes_flags = SCALER_ENABLE |
                SCALER_SMART_SWITCH;
//		SCALER_HORZ_PICK_NEAREST;
#else