Commit ea465250 authored by Raphael Assenat's avatar Raphael Assenat Committed by Linus Torvalds
Browse files

[PATCH] mbxfb: Add YUV video overlay support 



This patch adds a way to create and use the video plane (YUV overlay) and
scaling video scaling features of the chip.

The overlay is configured, resized and modified using a device specific
ioctl.

Also included in this patch:
  - If no platform data was passed, print an error and exit instead of crashing.
  - Added a write_reg(_dly) macro. This improves readability when
    manipulating chip registers. (no more udelay() after each write).
  - Comments about some issues.

Signed-off-by: default avatarRaphael Assenat <raph@8d.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Acked-by: default avatarJames Simmons <jsimmons@infradead.org>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 128806c3

drivers/video/mbx/mbxfb.c

+271 −88
Original line number Diff line number Diff line 
/*

 *  linux/drivers/video/mbx/mbxfb.c

 *

 *  Copyright (C) 2006 8D Technologies inc

 *  Raphael Assenat <raph@8d.com>

 *  	- Added video overlay support

 *  	- Various improvements

 *

 *  Copyright (C) 2006 Compulab, Ltd.

 *  Mike Rapoport <mike@compulab.co.il>

 *  	- Creation of driver

 *

 *   Based on pxafb.c

 *
@@ -19,6 +25,7 @@ 
#include <linux/init.h>

#include <linux/module.h>

#include <linux/platform_device.h>

#include <linux/uaccess.h>



#include <asm/io.h>
@@ -29,6 +36,14 @@ 


static unsigned long virt_base_2700;



#define write_reg(val, reg) do { writel((val), (reg)); } while(0)



/* Without this delay, the graphics appears somehow scaled and

 * there is a lot of jitter in scanlines. This delay is probably

 * needed only after setting some specific register(s) somewhere,

 * not all over the place... */

#define write_reg_dly(val, reg) do { writel((val), reg); udelay(1000); } while(0)



#define MIN_XRES	16

#define MIN_YRES	16

#define MAX_XRES	2048
@@ -257,19 +272,17 @@ static int mbxfb_set_par(struct fb_info *info) 
	gsctrl &= ~(FMsk(GSCTRL_GSWIDTH) | FMsk(GSCTRL_GSHEIGHT));

	gsctrl |= Gsctrl_Width(info->var.xres) |

		Gsctrl_Height(info->var.yres);

	writel(gsctrl, GSCTRL);

	udelay(1000);

	write_reg_dly(gsctrl, GSCTRL);



	gsadr &= ~(FMsk(GSADR_SRCSTRIDE));

	gsadr |= Gsadr_Srcstride(info->var.xres * info->var.bits_per_pixel /

				 (8 * 16) - 1);

	writel(gsadr, GSADR);

	udelay(1000);

	write_reg_dly(gsadr, GSADR);



	/* setup timings */

	var->pixclock = mbxfb_get_pixclock(info->var.pixclock, &div);



	writel((Disp_Pll_M(div.m) | Disp_Pll_N(div.n) |

	write_reg_dly((Disp_Pll_M(div.m) | Disp_Pll_N(div.n) |

		Disp_Pll_P(div.p) | DISP_PLL_EN), DISPPLL);



	hbps = var->hsync_len;
@@ -282,18 +295,20 @@ static int mbxfb_set_par(struct fb_info *info) 
	vfps = vas + var->yres;

	vt = vfps + var->lower_margin;



	writel((Dht01_Hbps(hbps) | Dht01_Ht(ht)), DHT01);

	writel((Dht02_Hlbs(has) | Dht02_Has(has)), DHT02);

	writel((Dht03_Hfps(hfps) | Dht03_Hrbs(hfps)), DHT03);

	writel((Dhdet_Hdes(has) | Dhdet_Hdef(hfps)), DHDET);

	write_reg_dly((Dht01_Hbps(hbps) | Dht01_Ht(ht)), DHT01);

	write_reg_dly((Dht02_Hlbs(has) | Dht02_Has(has)), DHT02);

	write_reg_dly((Dht03_Hfps(hfps) | Dht03_Hrbs(hfps)), DHT03);

	write_reg_dly((Dhdet_Hdes(has) | Dhdet_Hdef(hfps)), DHDET);



	write_reg_dly((Dvt01_Vbps(vbps) | Dvt01_Vt(vt)), DVT01);

	write_reg_dly((Dvt02_Vtbs(vas) | Dvt02_Vas(vas)), DVT02);

	write_reg_dly((Dvt03_Vfps(vfps) | Dvt03_Vbbs(vfps)), DVT03);

	write_reg_dly((Dvdet_Vdes(vas) | Dvdet_Vdef(vfps)), DVDET);

	write_reg_dly((Dvectrl_Vevent(vfps) | Dvectrl_Vfetch(vbps)), DVECTRL);



	writel((Dvt01_Vbps(vbps) | Dvt01_Vt(vt)), DVT01);

	writel((Dvt02_Vtbs(vas) | Dvt02_Vas(vas)), DVT02);

	writel((Dvt03_Vfps(vfps) | Dvt03_Vbbs(vfps)), DVT03);

	writel((Dvdet_Vdes(vas) | Dvdet_Vdef(vfps)), DVDET);

	writel((Dvectrl_Vevent(vfps) | Dvectrl_Vfetch(vbps)), DVECTRL);

	write_reg_dly((readl(DSCTRL) | DSCTRL_SYNCGEN_EN), DSCTRL);



	writel((readl(DSCTRL) | DSCTRL_SYNCGEN_EN), DSCTRL);

	write_reg_dly(DINTRE_VEVENT0_EN, DINTRE);



	return 0;

}
@@ -305,23 +320,203 @@ static int mbxfb_blank(int blank, struct fb_info *info) 
	case FB_BLANK_VSYNC_SUSPEND:

	case FB_BLANK_HSYNC_SUSPEND:

	case FB_BLANK_NORMAL:

		writel((readl(DSCTRL) & ~DSCTRL_SYNCGEN_EN), DSCTRL);

		udelay(1000);

		writel((readl(PIXCLK) & ~PIXCLK_EN), PIXCLK);

		udelay(1000);

		writel((readl(VOVRCLK) & ~VOVRCLK_EN), VOVRCLK);

		udelay(1000);

		write_reg_dly((readl(DSCTRL) & ~DSCTRL_SYNCGEN_EN), DSCTRL);

		write_reg_dly((readl(PIXCLK) & ~PIXCLK_EN), PIXCLK);

		write_reg_dly((readl(VOVRCLK) & ~VOVRCLK_EN), VOVRCLK);

		break;

	case FB_BLANK_UNBLANK:

		writel((readl(DSCTRL) | DSCTRL_SYNCGEN_EN), DSCTRL);

		udelay(1000);

		writel((readl(PIXCLK) | PIXCLK_EN), PIXCLK);

		udelay(1000);

		write_reg_dly((readl(DSCTRL) | DSCTRL_SYNCGEN_EN), DSCTRL);

		write_reg_dly((readl(PIXCLK) | PIXCLK_EN), PIXCLK);

		break;

	}

	return 0;

}



static int mbxfb_setupOverlay(struct mbxfb_overlaySetup *set)

{

	u32 vsctrl, vbbase, vscadr, vsadr;

	u32 sssize, spoctrl, svctrl, shctrl;

	u32 vubase, vvbase;

	u32 vovrclk;



	if (set->scaled_width==0 || set->scaled_height==0)

		return -EINVAL;



	/* read registers which have reserved bits

	 * so we can write them back as-is. */

	vovrclk = readl(VOVRCLK);

	vsctrl = readl(VSCTRL);

	vscadr = readl(VSCADR);

	vubase = readl(VUBASE);

	vvbase = readl(VVBASE);



	spoctrl = readl(SPOCTRL);

	sssize = readl(SSSIZE);





	vbbase = Vbbase_Glalpha(set->alpha);



	vsctrl &= ~(	FMsk(VSCTRL_VSWIDTH) |

					FMsk(VSCTRL_VSHEIGHT) |

					FMsk(VSCTRL_VPIXFMT) |

					VSCTRL_GAMMA_EN | VSCTRL_CSC_EN |

					VSCTRL_COSITED );

	vsctrl |= Vsctrl_Width(set->width) | Vsctrl_Height(set->height) |

				VSCTRL_CSC_EN;



	vscadr &= ~(VSCADR_STR_EN | VSCADR_COLKEY_EN | VSCADR_COLKEYSRC |

				FMsk(VSCADR_BLEND_M) | FMsk(VSCADR_BLEND_POS) |

				FMsk(VSCADR_VBASE_ADR) );

	vubase &= ~(VUBASE_UVHALFSTR | FMsk(VUBASE_UBASE_ADR));

	vvbase &= ~(FMsk(VVBASE_VBASE_ADR));



	switch (set->fmt)

	{

		case MBXFB_FMT_YUV12:

			vsctrl |= VSCTRL_VPIXFMT_YUV12;



			set->Y_stride = ((set->width) + 0xf ) & ~0xf;



			break;

		case MBXFB_FMT_UY0VY1:

			vsctrl |= VSCTRL_VPIXFMT_UY0VY1;

			set->Y_stride = (set->width*2 + 0xf ) & ~0xf;

			break;

		case MBXFB_FMT_VY0UY1:

			vsctrl |= VSCTRL_VPIXFMT_VY0UY1;

			set->Y_stride = (set->width*2 + 0xf ) & ~0xf;

			break;

		case MBXFB_FMT_Y0UY1V:

			vsctrl |= VSCTRL_VPIXFMT_Y0UY1V;

			set->Y_stride = (set->width*2 + 0xf ) & ~0xf;

			break;

		case MBXFB_FMT_Y0VY1U:

			vsctrl |= VSCTRL_VPIXFMT_Y0VY1U;

			set->Y_stride = (set->width*2 + 0xf ) & ~0xf;

			break;

		default:

			return -EINVAL;

	}



	/* VSCTRL has the bits which sets the Video Pixel Format.

	 * When passing from a packed to planar format,

	 * if we write VSCTRL first, VVBASE and VUBASE would

	 * be zero if we would not set them here. (And then,

	 * the chips hangs and only a reset seems to fix it).

	 *

	 * If course, the values calculated here have no meaning

	 * for packed formats.

	 */

	set->UV_stride = ((set->width/2) + 0x7 ) & ~0x7;

		set->U_offset = set->height * set->Y_stride;

		set->V_offset = set->U_offset +

						set->height * set->UV_stride;

	vubase |= Vubase_Ubase_Adr(

			(0x60000 + set->mem_offset + set->U_offset)>>3);

	vvbase |= Vvbase_Vbase_Adr(

			(0x60000 + set->mem_offset + set->V_offset)>>3);





	vscadr |= VSCADR_BLEND_VID | VSCADR_BLEND_GLOB |

		Vscadr_Vbase_Adr((0x60000 + set->mem_offset)>>4);



	if (set->enable)

		vscadr |= VSCADR_STR_EN;





	vsadr = Vsadr_Srcstride((set->Y_stride)/16-1) |

		Vsadr_Xstart(set->x) | Vsadr_Ystart(set->y);



	sssize &= ~(FMsk(SSSIZE_SC_WIDTH) | FMsk(SSSIZE_SC_HEIGHT));

	sssize = Sssize_Sc_Width(set->scaled_width-1) |

			Sssize_Sc_Height(set->scaled_height-1);



	spoctrl &= ~(SPOCTRL_H_SC_BP | SPOCTRL_V_SC_BP |

			SPOCTRL_HV_SC_OR | SPOCTRL_VS_UR_C |

			FMsk(SPOCTRL_VORDER) | FMsk(SPOCTRL_VPITCH));

	spoctrl = Spoctrl_Vpitch((set->height<<11)/set->scaled_height)

							| SPOCTRL_VORDER_2TAP;



	/* Bypass horiz/vert scaler when same size */

	if (set->scaled_width == set->width)

		spoctrl |= SPOCTRL_H_SC_BP;

	if (set->scaled_height == set->height)

		spoctrl |= SPOCTRL_V_SC_BP;



	svctrl = Svctrl_Initial1(1<<10) | Svctrl_Initial2(1<<10);



	shctrl = Shctrl_Hinitial(4<<11)

			| Shctrl_Hpitch((set->width<<11)/set->scaled_width);



	/* Video plane registers */

	write_reg(vsctrl, VSCTRL);

	write_reg(vbbase, VBBASE);

	write_reg(vscadr, VSCADR);

	write_reg(vubase, VUBASE);

	write_reg(vvbase, VVBASE);

	write_reg(vsadr, VSADR);



	/* Video scaler registers */

	write_reg(sssize, SSSIZE);

	write_reg(spoctrl, SPOCTRL);

	write_reg(svctrl, SVCTRL);

	write_reg(shctrl, SHCTRL);



	/* RAPH: Using those coefficients, the scaled

	 * image is quite blurry. I dont know how

	 * to improve them ; The chip documentation

	 * was not helpful.. */

	write_reg(0x21212121, VSCOEFF0);

	write_reg(0x21212121, VSCOEFF1);

	write_reg(0x21212121, VSCOEFF2);

	write_reg(0x21212121, VSCOEFF3);

	write_reg(0x21212121, VSCOEFF4);

	write_reg(0x00000000, HSCOEFF0);

	write_reg(0x00000000, HSCOEFF1);

	write_reg(0x00000000, HSCOEFF2);

	write_reg(0x03020201, HSCOEFF3);

	write_reg(0x09070604, HSCOEFF4);

	write_reg(0x0f0e0c0a, HSCOEFF5);

	write_reg(0x15141211, HSCOEFF6);

	write_reg(0x19181716, HSCOEFF7);

	write_reg(0x00000019, HSCOEFF8);



	/* Clock */

	if (set->enable)

		vovrclk |= 1;

	else

		vovrclk &= ~1;



	write_reg(vovrclk, VOVRCLK);



	return 0;

}



static int mbxfb_ioctl(struct fb_info *info, unsigned int cmd,

				unsigned long arg)

{

	struct mbxfb_overlaySetup setup;

	int res;



	if (cmd == MBXFB_IOCX_OVERLAY)

	{

		if (copy_from_user(&setup, (void __user*)arg,

					sizeof(struct mbxfb_overlaySetup)))

			return -EFAULT;



		res = mbxfb_setupOverlay(&setup);

		if (res)

			return res;



		if (copy_to_user((void __user*)arg, &setup,

					sizeof(struct mbxfb_overlaySetup)))

			return -EFAULT;



		return 0;

	}

	return -EINVAL;

}



static struct fb_ops mbxfb_ops = {

	.owner = THIS_MODULE,

	.fb_check_var = mbxfb_check_var,
@@ -331,6 +526,7 @@ static struct fb_ops mbxfb_ops = { 
	.fb_copyarea = cfb_copyarea,

	.fb_imageblit = cfb_imageblit,

	.fb_blank = mbxfb_blank,

	.fb_ioctl = mbxfb_ioctl,

};



/*
@@ -339,36 +535,29 @@ static struct fb_ops mbxfb_ops = { 
*/

static void __devinit setup_memc(struct fb_info *fbi)

{

	struct mbxfb_info *mfbi = fbi->par;

	unsigned long tmp;

	int i;



	/* FIXME: use platfrom specific parameters */

	/* setup SDRAM controller */

	writel((LMCFG_LMC_DS | LMCFG_LMC_TS | LMCFG_LMD_TS |

	write_reg_dly((LMCFG_LMC_DS | LMCFG_LMC_TS | LMCFG_LMD_TS |

		LMCFG_LMA_TS),

	       LMCFG);

	udelay(1000);



	writel(LMPWR_MC_PWR_ACT, LMPWR);

	udelay(1000);

	write_reg_dly(LMPWR_MC_PWR_ACT, LMPWR);



	/* setup SDRAM timings */

	writel((Lmtim_Tras(7) | Lmtim_Trp(3) | Lmtim_Trcd(3) |

	write_reg_dly((Lmtim_Tras(7) | Lmtim_Trp(3) | Lmtim_Trcd(3) |

		Lmtim_Trc(9) | Lmtim_Tdpl(2)),

	       LMTIM);

	udelay(1000);

	/* setup SDRAM refresh rate */

	writel(0xc2b, LMREFRESH);

	udelay(1000);

	write_reg_dly(0xc2b, LMREFRESH);

	/* setup SDRAM type parameters */

	writel((LMTYPE_CASLAT_3 | LMTYPE_BKSZ_2 | LMTYPE_ROWSZ_11 |

	write_reg_dly((LMTYPE_CASLAT_3 | LMTYPE_BKSZ_2 | LMTYPE_ROWSZ_11 |

		LMTYPE_COLSZ_8),

	       LMTYPE);

	udelay(1000);

	/* enable memory controller */

	writel(LMPWR_MC_PWR_ACT, LMPWR);

	udelay(1000);

	write_reg_dly(LMPWR_MC_PWR_ACT, LMPWR);



	/* perform dummy reads */

	for ( i = 0; i < 16; i++ ) {
@@ -379,34 +568,30 @@ static void __devinit setup_memc(struct fb_info *fbi) 
static void enable_clocks(struct fb_info *fbi)

{

	/* enable clocks */

	writel(SYSCLKSRC_PLL_2, SYSCLKSRC);

	udelay(1000);

	writel(PIXCLKSRC_PLL_1, PIXCLKSRC);

	udelay(1000);

	writel(0x00000000, CLKSLEEP);

	udelay(1000);

	writel((Core_Pll_M(0x17) | Core_Pll_N(0x3) | Core_Pll_P(0x0) |

	write_reg_dly(SYSCLKSRC_PLL_2, SYSCLKSRC);

	write_reg_dly(PIXCLKSRC_PLL_1, PIXCLKSRC);

	write_reg_dly(0x00000000, CLKSLEEP);



	/* PLL output = (Frefclk * M) / (N * 2^P )

	 *

	 * M: 0x17, N: 0x3, P: 0x0 == 100 Mhz!

	 * M: 0xb, N: 0x1, P: 0x1 == 71 Mhz

	 * */

	write_reg_dly((Core_Pll_M(0xb) | Core_Pll_N(0x1) | Core_Pll_P(0x1) |

		CORE_PLL_EN),

	       COREPLL);

	udelay(1000);

	writel((Disp_Pll_M(0x1b) | Disp_Pll_N(0x7) | Disp_Pll_P(0x1) |



	write_reg_dly((Disp_Pll_M(0x1b) | Disp_Pll_N(0x7) | Disp_Pll_P(0x1) |

		DISP_PLL_EN),

	       DISPPLL);



	writel(0x00000000, VOVRCLK);

	udelay(1000);

	writel(PIXCLK_EN, PIXCLK);

	udelay(1000);

	writel(MEMCLK_EN, MEMCLK);

	udelay(1000);

	writel(0x00000006, M24CLK);

	udelay(1000);

	writel(0x00000006, MBXCLK);

	udelay(1000);

	writel(SDCLK_EN, SDCLK);

	udelay(1000);

	writel(0x00000001, PIXCLKDIV);

	udelay(1000);

	write_reg_dly(0x00000000, VOVRCLK);

	write_reg_dly(PIXCLK_EN, PIXCLK);

	write_reg_dly(MEMCLK_EN, MEMCLK);

	write_reg_dly(0x00000006, M24CLK);

	write_reg_dly(0x00000006, MBXCLK);

	write_reg_dly(SDCLK_EN, SDCLK);

	write_reg_dly(0x00000001, PIXCLKDIV);

}



static void __devinit setup_graphics(struct fb_info *fbi)
@@ -430,16 +615,11 @@ static void __devinit setup_graphics(struct fb_info *fbi) 
		break;

	}



	writel(gsctrl, GSCTRL);

	udelay(1000);

	writel(0x00000000, GBBASE);

	udelay(1000);

	writel(0x00ffffff, GDRCTRL);

	udelay(1000);

	writel((GSCADR_STR_EN | Gscadr_Gbase_Adr(0x6000)), GSCADR);

	udelay(1000);

	writel(0x00000000, GPLUT);

	udelay(1000);

	write_reg_dly(gsctrl, GSCTRL);

	write_reg_dly(0x00000000, GBBASE);

	write_reg_dly(0x00ffffff, GDRCTRL);

	write_reg_dly((GSCADR_STR_EN | Gscadr_Gbase_Adr(0x6000)), GSCADR);

	write_reg_dly(0x00000000, GPLUT);

}



static void __devinit setup_display(struct fb_info *fbi)
@@ -451,17 +631,14 @@ static void __devinit setup_display(struct fb_info *fbi) 
		dsctrl |= DSCTRL_HS_POL;

	if (fbi->var.sync & FB_SYNC_VERT_HIGH_ACT)

		dsctrl |= DSCTRL_VS_POL;

	writel(dsctrl, DSCTRL);

	udelay(1000);

	writel(0xd0303010, DMCTRL);

	udelay(1000);

	writel((readl(DSCTRL) | DSCTRL_SYNCGEN_EN), DSCTRL);

	write_reg_dly(dsctrl, DSCTRL);

	write_reg_dly(0xd0303010, DMCTRL);

	write_reg_dly((readl(DSCTRL) | DSCTRL_SYNCGEN_EN), DSCTRL);

}



static void __devinit enable_controller(struct fb_info *fbi)

{

	writel(SYSRST_RST, SYSRST);

	udelay(1000);

	write_reg_dly(SYSRST_RST, SYSRST);





	enable_clocks(fbi);
@@ -478,12 +655,12 @@ static void __devinit enable_controller(struct fb_info *fbi) 
static int mbxfb_suspend(struct platform_device *dev, pm_message_t state)

{

	/* make frame buffer memory enter self-refresh mode */

	writel(LMPWR_MC_PWR_SRM, LMPWR);

	write_reg_dly(LMPWR_MC_PWR_SRM, LMPWR);

	while (LMPWRSTAT != LMPWRSTAT_MC_PWR_SRM)

		; /* empty statement */



	/* reset the device, since it's initial state is 'mostly sleeping' */

	writel(SYSRST_RST, SYSRST);

	write_reg_dly(SYSRST_RST, SYSRST);

	return 0;

}
@@ -495,7 +672,7 @@ static int mbxfb_resume(struct platform_device *dev) 
/* 	setup_graphics(fbi); */

/* 	setup_display(fbi); */



	writel((readl(DSCTRL) | DSCTRL_SYNCGEN_EN), DSCTRL);

	write_reg_dly((readl(DSCTRL) | DSCTRL_SYNCGEN_EN), DSCTRL);

	return 0;

}

#else
@@ -520,6 +697,12 @@ static int __devinit mbxfb_probe(struct platform_device *dev) 


	dev_dbg(dev, "mbxfb_probe\n");



	pdata = dev->dev.platform_data;

	if (!pdata) {

		dev_err(&dev->dev, "platform data is required\n");

		return -EINVAL;

	}



	fbi = framebuffer_alloc(sizeof(struct mbxfb_info), &dev->dev);

	if (fbi == NULL) {

		dev_err(&dev->dev, "framebuffer_alloc failed\n");
@@ -528,7 +711,8 @@ static int __devinit mbxfb_probe(struct platform_device *dev) 


	mfbi = fbi->par;

	fbi->pseudo_palette = mfbi->pseudo_palette;

	pdata = dev->dev.platform_data;





	if (pdata->probe)

		mfbi->platform_probe = pdata->probe;

	if (pdata->remove)
@@ -578,16 +762,16 @@ static int __devinit mbxfb_probe(struct platform_device *dev) 
		goto err4;

	}



	/* FIXME: get from platform */

	fbi->screen_base = (char __iomem *)(mfbi->fb_virt_addr + 0x60000);

	fbi->screen_size = 8 * 1024 * 1024;	/* 8 Megs */

	fbi->screen_size = pdata->memsize;

	fbi->fbops = &mbxfb_ops;



	fbi->var = mbxfb_default;

	fbi->fix = mbxfb_fix;

	fbi->fix.smem_start = mfbi->fb_phys_addr + 0x60000;

	fbi->fix.smem_len = 8 * 1024 * 1024;

	fbi->fix.line_length = 640 * 2;

	fbi->fix.smem_len = pdata->memsize;

	fbi->fix.line_length = mbxfb_default.xres_virtual *

					mbxfb_default.bits_per_pixel / 8;



	ret = fb_alloc_cmap(&fbi->cmap, 256, 0);

	if (ret < 0) {
@@ -636,8 +820,7 @@ static int __devexit mbxfb_remove(struct platform_device *dev) 
{

	struct fb_info *fbi = platform_get_drvdata(dev);



	writel(SYSRST_RST, SYSRST);

	udelay(1000);

	write_reg_dly(SYSRST_RST, SYSRST);



	mbxfb_debugfs_remove(fbi);

include/video/mbxfb.h

+31 −0
Original line number Diff line number Diff line 
#ifndef __MBX_FB_H

#define __MBX_FB_H



#include <asm/ioctl.h>

#include <asm/types.h>



struct mbxfb_val {

	unsigned int	defval;

	unsigned int	min;
@@ -25,4 +28,32 @@ struct mbxfb_platform_data { 
		int (*remove)(struct fb_info *fb);

};



/* planar */

#define MBXFB_FMT_YUV12		0



/* packed */

#define MBXFB_FMT_UY0VY1	1

#define MBXFB_FMT_VY0UY1	2

#define MBXFB_FMT_Y0UY1V	3

#define MBXFB_FMT_Y0VY1U	4

struct mbxfb_overlaySetup {

	__u32 enable;

	__u32 x, y;

	__u32 width, height;

	__u32 alpha;

	__u32 fmt;

	__u32 mem_offset;

	__u32 scaled_width;

	__u32 scaled_height;



	/* Filled by the driver */

	__u32 U_offset;

	__u32 V_offset;



	__u16 Y_stride;

	__u16 UV_stride;

};



#define MBXFB_IOCX_OVERLAY	_IOWR(0xF4, 0x00,struct mbxfb_overlaySetup)



#endif /* __MBX_FB_H */

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