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/* arch/arm/mach-s3c6400/include/mach/regs-fb.h
*
* Copyright 2008 Openmoko, Inc.
* Copyright 2008 Simtec Electronics
* http://armlinux.simtec.co.uk/
* Ben Dooks <ben@simtec.co.uk>
*
* S3C64XX - new-style framebuffer register definitions
*
* This is the register set for the new style framebuffer interface
* found from the S3C2443 onwards and specifically the S3C64XX series
* S3C6400 and S3C6410.
*
* The file contains the cpu specific items which change between whichever
* architecture is selected. See <plat/regs-fb.h> for the core definitions
* that are the same.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
/* include the core definitions here, in case we really do need to
* override them at a later date.
*/
#include <plat/regs-fb.h>
#define S3C_FB_MAX_WIN (5) /* number of hardware windows available. */
#define VIDCON1_FSTATUS_EVEN (1 << 15)
/* Video timing controls */
#define VIDTCON0 (0x10)
#define VIDTCON1 (0x14)
#define VIDTCON2 (0x18)
/* Window position controls */
#define WINCON(_win) (0x20 + ((_win) * 4))
/* OSD1 and OSD4 do not have register D */
#define VIDOSD_A(_win) (0x40 + ((_win) * 16))
#define VIDOSD_B(_win) (0x44 + ((_win) * 16))
#define VIDOSD_C(_win) (0x48 + ((_win) * 16))
#define VIDOSD_D(_win) (0x4C + ((_win) * 16))
/* Video buffer addresses */
#define VIDW_BUF_START(_buff) (0xA0 + ((_buff) * 8))
#define VIDW_BUF_START1(_buff) (0xA4 + ((_buff) * 8))
#define VIDW_BUF_END(_buff) (0xD0 + ((_buff) * 8))
#define VIDW_BUF_END1(_buff) (0xD4 + ((_buff) * 8))
#define VIDW_BUF_SIZE(_buff) (0x100 + ((_buff) * 4))
#define VIDINTCON0 (0x130)
#define WxKEYCONy(_win, _con) ((0x140 + ((_win) * 8)) + ((_con) * 4))
/* WINCONx */
#define WINCONx_CSCWIDTH_MASK (0x3 << 26)
#define WINCONx_CSCWIDTH_SHIFT (26)
#define WINCONx_CSCWIDTH_WIDE (0x0 << 26)
#define WINCONx_CSCWIDTH_NARROW (0x3 << 26)
#define WINCONx_ENLOCAL (1 << 22)
#define WINCONx_BUFSTATUS (1 << 21)
#define WINCONx_BUFSEL (1 << 20)
#define WINCONx_BUFAUTOEN (1 << 19)
#define WINCONx_YCbCr (1 << 13)
#define WINCON1_LOCALSEL_CAMIF (1 << 23)
#define WINCON2_LOCALSEL_CAMIF (1 << 23)
#define WINCON2_BLD_PIX (1 << 6)
#define WINCON2_ALPHA_SEL (1 << 1)
#define WINCON2_BPPMODE_MASK (0xf << 2)
#define WINCON2_BPPMODE_SHIFT (2)
#define WINCON2_BPPMODE_1BPP (0x0 << 2)
#define WINCON2_BPPMODE_2BPP (0x1 << 2)
#define WINCON2_BPPMODE_4BPP (0x2 << 2)
#define WINCON2_BPPMODE_8BPP_1232 (0x4 << 2)
#define WINCON2_BPPMODE_16BPP_565 (0x5 << 2)
#define WINCON2_BPPMODE_16BPP_A1555 (0x6 << 2)
#define WINCON2_BPPMODE_16BPP_I1555 (0x7 << 2)
#define WINCON2_BPPMODE_18BPP_666 (0x8 << 2)
#define WINCON2_BPPMODE_18BPP_A1665 (0x9 << 2)
#define WINCON2_BPPMODE_19BPP_A1666 (0xa << 2)
#define WINCON2_BPPMODE_24BPP_888 (0xb << 2)
#define WINCON2_BPPMODE_24BPP_A1887 (0xc << 2)
#define WINCON2_BPPMODE_25BPP_A1888 (0xd << 2)
#define WINCON2_BPPMODE_28BPP_A4888 (0xd << 2)
#define WINCON3_BLD_PIX (1 << 6)
#define WINCON3_ALPHA_SEL (1 << 1)
#define WINCON3_BPPMODE_MASK (0xf << 2)
#define WINCON3_BPPMODE_SHIFT (2)
#define WINCON3_BPPMODE_1BPP (0x0 << 2)
#define WINCON3_BPPMODE_2BPP (0x1 << 2)
#define WINCON3_BPPMODE_4BPP (0x2 << 2)
#define WINCON3_BPPMODE_16BPP_565 (0x5 << 2)
#define WINCON3_BPPMODE_16BPP_A1555 (0x6 << 2)
#define WINCON3_BPPMODE_16BPP_I1555 (0x7 << 2)
#define WINCON3_BPPMODE_18BPP_666 (0x8 << 2)
#define WINCON3_BPPMODE_18BPP_A1665 (0x9 << 2)
#define WINCON3_BPPMODE_19BPP_A1666 (0xa << 2)
#define WINCON3_BPPMODE_24BPP_888 (0xb << 2)
#define WINCON3_BPPMODE_24BPP_A1887 (0xc << 2)
#define WINCON3_BPPMODE_25BPP_A1888 (0xd << 2)
#define WINCON3_BPPMODE_28BPP_A4888 (0xd << 2)
#define VIDINTCON0_FIFIOSEL_WINDOW2 (0x10 << 5)
#define VIDINTCON0_FIFIOSEL_WINDOW3 (0x20 << 5)
#define VIDINTCON0_FIFIOSEL_WINDOW4 (0x40 << 5)
#define DITHMODE (0x170)
#define WINxMAP(_win) (0x180 + ((_win) * 4))
#define DITHMODE_R_POS_MASK (0x3 << 5)
#define DITHMODE_R_POS_SHIFT (5)
#define DITHMODE_R_POS_8BIT (0x0 << 5)
#define DITHMODE_R_POS_6BIT (0x1 << 5)
#define DITHMODE_R_POS_5BIT (0x2 << 5)
#define DITHMODE_G_POS_MASK (0x3 << 3)
#define DITHMODE_G_POS_SHIFT (3)
#define DITHMODE_G_POS_8BIT (0x0 << 3)
#define DITHMODE_G_POS_6BIT (0x1 << 3)
#define DITHMODE_G_POS_5BIT (0x2 << 3)
#define DITHMODE_B_POS_MASK (0x3 << 1)
#define DITHMODE_B_POS_SHIFT (1)
#define DITHMODE_B_POS_8BIT (0x0 << 1)
#define DITHMODE_B_POS_6BIT (0x1 << 1)
#define DITHMODE_B_POS_5BIT (0x2 << 1)
#define DITHMODE_DITH_EN (1 << 0)
#define WPALCON (0x1A0)
#define WPALCON_W4PAL_16BPP_A555 (1 << 8)
#define WPALCON_W3PAL_16BPP_A555 (1 << 7)
#define WPALCON_W2PAL_16BPP_A555 (1 << 6)
/* Palette registers */
#define WIN2_PAL(_entry) (0x300 + ((_entry) * 2))
#define WIN3_PAL(_entry) (0x320 + ((_entry) * 2))
#define WIN4_PAL(_entry) (0x340 + ((_entry) * 2))
#define WIN0_PAL(_entry) (0x400 + ((_entry) * 4))
#define WIN1_PAL(_entry) (0x800 + ((_entry) * 4))
/* system specific implementation code for palette sizes, and other
* information that changes depending on which architecture is being
* compiled.
*/
/* return true if window _win has OSD register D */
#define s3c_fb_has_osd_d(_win) ((_win) != 4 && (_win) != 0)
static inline unsigned int s3c_fb_win_pal_size(unsigned int win)
{
if (win < 2)
return 256;
if (win < 4)
return 16;
if (win == 4)
return 4;
BUG(); /* shouldn't get here */
}
static inline int s3c_fb_validate_win_bpp(unsigned int win, unsigned int bpp)
{
/* all windows can do 1/2 bpp */
if ((bpp == 25 || bpp == 19) && win == 0)
return 0; /* win 0 does not have 19 or 25bpp modes */
if (bpp == 4 && win == 4)
return 0;
if (bpp == 8 && (win >= 3))
return 0; /* win 3/4 cannot do 8bpp in any mode */
return 1;
}
static inline unsigned int s3c_fb_pal_reg(unsigned int window, int reg)
{
switch (window) {
case 0: return WIN0_PAL(reg);
case 1: return WIN1_PAL(reg);
case 2: return WIN2_PAL(reg);
case 3: return WIN3_PAL(reg);
case 4: return WIN4_PAL(reg);
}
BUG();
}
static inline int s3c_fb_pal_is16(unsigned int window)
{
return window > 1;
}
struct s3c_fb_palette {
struct fb_bitfield r;
struct fb_bitfield g;
struct fb_bitfield b;
struct fb_bitfield a;
};
static inline void s3c_fb_init_palette(unsigned int window,
struct s3c_fb_palette *palette)
{
if (window < 2) {
/* Windows 0/1 are 8/8/8 or A/8/8/8 */
palette->r.offset = 16;
palette->r.length = 8;
palette->g.offset = 8;
palette->g.length = 8;
palette->b.offset = 0;
palette->b.length = 8;
} else {
/* currently we assume RGB 5/6/5 */
palette->r.offset = 11;
palette->r.length = 5;
palette->g.offset = 5;
palette->g.length = 6;
palette->b.offset = 0;
palette->b.length = 5;
}
}
/* Notes on per-window bpp settings
*
* Value Win0 Win1 Win2 Win3 Win 4
* 0000 1(P) 1(P) 1(P) 1(P) 1(P)
* 0001 2(P) 2(P) 2(P) 2(P) 2(P)
* 0010 4(P) 4(P) 4(P) 4(P) -none-
* 0011 8(P) 8(P) -none- -none- -none-
* 0100 -none- 8(A232) 8(A232) -none- -none-
* 0101 16(565) 16(565) 16(565) 16(565) 16(565)
* 0110 -none- 16(A555) 16(A555) 16(A555) 16(A555)
* 0111 16(I555) 16(I565) 16(I555) 16(I555) 16(I555)
* 1000 18(666) 18(666) 18(666) 18(666) 18(666)
* 1001 -none- 18(A665) 18(A665) 18(A665) 16(A665)
* 1010 -none- 19(A666) 19(A666) 19(A666) 19(A666)
* 1011 24(888) 24(888) 24(888) 24(888) 24(888)
* 1100 -none- 24(A887) 24(A887) 24(A887) 24(A887)
* 1101 -none- 25(A888) 25(A888) 25(A888) 25(A888)
* 1110 -none- -none- -none- -none- -none-
* 1111 -none- -none- -none- -none- -none-
*/
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