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uboot-1.1.4-kirkwood/cpu/pxa/pxafb.c
Olaf Rempel f69754bccc u-boot 1.1.4
2024-01-07 23:57:24 +01:00

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/*
* PXA LCD Controller
*
* (C) Copyright 2001-2002
* Wolfgang Denk, DENX Software Engineering -- wd@denx.de
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
/************************************************************************/
/* ** HEADER FILES */
/************************************************************************/
#include <config.h>
#include <common.h>
#include <version.h>
#include <stdarg.h>
#include <linux/types.h>
#include <devices.h>
#include <lcd.h>
#include <asm/arch/pxa-regs.h>
/* #define DEBUG */
#ifdef CONFIG_LCD
/*----------------------------------------------------------------------*/
/*
* Define panel bpp, LCCR0, LCCR3 and panel_info video struct for
* your display.
*/
#ifdef CONFIG_PXA_VGA
/* LCD outputs connected to a video DAC */
# define LCD_BPP LCD_COLOR8
/* you have to set lccr0 and lccr3 (including pcd) */
# define REG_LCCR0 0x003008f8
# define REG_LCCR3 0x0300FF01
/* 640x480x16 @ 61 Hz */
vidinfo_t panel_info = {
vl_col: 640,
vl_row: 480,
vl_width: 640,
vl_height: 480,
vl_clkp: CFG_HIGH,
vl_oep: CFG_HIGH,
vl_hsp: CFG_HIGH,
vl_vsp: CFG_HIGH,
vl_dp: CFG_HIGH,
vl_bpix: LCD_BPP,
vl_lbw: 0,
vl_splt: 0,
vl_clor: 0,
vl_tft: 1,
vl_hpw: 40,
vl_blw: 56,
vl_elw: 56,
vl_vpw: 20,
vl_bfw: 8,
vl_efw: 8,
};
#endif /* CONFIG_PXA_VIDEO */
/*----------------------------------------------------------------------*/
#ifdef CONFIG_SHARP_LM8V31
# define LCD_BPP LCD_COLOR8
# define LCD_INVERT_COLORS /* Needed for colors to be correct, but why? */
/* you have to set lccr0 and lccr3 (including pcd) */
# define REG_LCCR0 0x0030087C
# define REG_LCCR3 0x0340FF08
vidinfo_t panel_info = {
vl_col: 640,
vl_row: 480,
vl_width: 157,
vl_height: 118,
vl_clkp: CFG_HIGH,
vl_oep: CFG_HIGH,
vl_hsp: CFG_HIGH,
vl_vsp: CFG_HIGH,
vl_dp: CFG_HIGH,
vl_bpix: LCD_BPP,
vl_lbw: 0,
vl_splt: 1,
vl_clor: 1,
vl_tft: 0,
vl_hpw: 1,
vl_blw: 3,
vl_elw: 3,
vl_vpw: 1,
vl_bfw: 0,
vl_efw: 0,
};
#endif /* CONFIG_SHARP_LM8V31 */
/*----------------------------------------------------------------------*/
#ifdef CONFIG_HITACHI_SX14
/* Hitachi SX14Q004-ZZA color STN LCD */
#define LCD_BPP LCD_COLOR8
/* you have to set lccr0 and lccr3 (including pcd) */
#define REG_LCCR0 0x00301079
#define REG_LCCR3 0x0340FF20
vidinfo_t panel_info = {
vl_col: 320,
vl_row: 240,
vl_width: 167,
vl_height: 109,
vl_clkp: CFG_HIGH,
vl_oep: CFG_HIGH,
vl_hsp: CFG_HIGH,
vl_vsp: CFG_HIGH,
vl_dp: CFG_HIGH,
vl_bpix: LCD_BPP,
vl_lbw: 1,
vl_splt: 0,
vl_clor: 1,
vl_tft: 0,
vl_hpw: 1,
vl_blw: 1,
vl_elw: 1,
vl_vpw: 7,
vl_bfw: 0,
vl_efw: 0,
};
#endif /* CONFIG_HITACHI_SX14 */
/*----------------------------------------------------------------------*/
#if LCD_BPP == LCD_COLOR8
void lcd_setcolreg (ushort regno, ushort red, ushort green, ushort blue);
#endif
#if LCD_BPP == LCD_MONOCHROME
void lcd_initcolregs (void);
#endif
#ifdef NOT_USED_SO_FAR
void lcd_disable (void);
void lcd_getcolreg (ushort regno, ushort *red, ushort *green, ushort *blue);
#endif /* NOT_USED_SO_FAR */
void lcd_ctrl_init (void *lcdbase);
void lcd_enable (void);
int lcd_line_length;
int lcd_color_fg;
int lcd_color_bg;
void *lcd_base; /* Start of framebuffer memory */
void *lcd_console_address; /* Start of console buffer */
short console_col;
short console_row;
static int pxafb_init_mem (void *lcdbase, vidinfo_t *vid);
static void pxafb_setup_gpio (vidinfo_t *vid);
static void pxafb_enable_controller (vidinfo_t *vid);
static int pxafb_init (vidinfo_t *vid);
/************************************************************************/
/************************************************************************/
/* --------------- PXA chipset specific functions ------------------- */
/************************************************************************/
void lcd_ctrl_init (void *lcdbase)
{
pxafb_init_mem(lcdbase, &panel_info);
pxafb_init(&panel_info);
pxafb_setup_gpio(&panel_info);
pxafb_enable_controller(&panel_info);
}
/*----------------------------------------------------------------------*/
#ifdef NOT_USED_SO_FAR
void
lcd_getcolreg (ushort regno, ushort *red, ushort *green, ushort *blue)
{
}
#endif /* NOT_USED_SO_FAR */
/*----------------------------------------------------------------------*/
#if LCD_BPP == LCD_COLOR8
void
lcd_setcolreg (ushort regno, ushort red, ushort green, ushort blue)
{
struct pxafb_info *fbi = &panel_info.pxa;
unsigned short *palette = (unsigned short *)fbi->palette;
u_int val;
if (regno < fbi->palette_size) {
val = ((red << 8) & 0xf800);
val |= ((green << 4) & 0x07e0);
val |= (blue & 0x001f);
#ifdef LCD_INVERT_COLORS
palette[regno] = ~val;
#else
palette[regno] = val;
#endif
}
debug ("setcolreg: reg %2d @ %p: R=%02X G=%02X B=%02X => %04X\n",
regno, &palette[regno],
red, green, blue,
palette[regno]);
}
#endif /* LCD_COLOR8 */
/*----------------------------------------------------------------------*/
#if LCD_BPP == LCD_MONOCHROME
void lcd_initcolregs (void)
{
struct pxafb_info *fbi = &panel_info.pxa;
cmap = (ushort *)fbi->palette;
ushort regno;
for (regno = 0; regno < 16; regno++) {
cmap[regno * 2] = 0;
cmap[(regno * 2) + 1] = regno & 0x0f;
}
}
#endif /* LCD_MONOCHROME */
/*----------------------------------------------------------------------*/
void lcd_enable (void)
{
}
/*----------------------------------------------------------------------*/
#ifdef NOT_USED_SO_FAR
static void lcd_disable (void)
{
}
#endif /* NOT_USED_SO_FAR */
/*----------------------------------------------------------------------*/
/************************************************************************/
/* ** PXA255 specific routines */
/************************************************************************/
/*
* Calculate fb size for VIDEOLFB_ATAG. Size returned contains fb,
* descriptors and palette areas.
*/
ulong calc_fbsize (void)
{
ulong size;
int line_length = (panel_info.vl_col * NBITS (panel_info.vl_bpix)) / 8;
size = line_length * panel_info.vl_row;
size += PAGE_SIZE;
return size;
}
static int pxafb_init_mem (void *lcdbase, vidinfo_t *vid)
{
u_long palette_mem_size;
struct pxafb_info *fbi = &vid->pxa;
int fb_size = vid->vl_row * (vid->vl_col * NBITS (vid->vl_bpix)) / 8;
fbi->screen = (u_long)lcdbase;
fbi->palette_size = NBITS(vid->vl_bpix) == 8 ? 256 : 16;
palette_mem_size = fbi->palette_size * sizeof(u16);
debug("palette_mem_size = 0x%08lx\n", (u_long) palette_mem_size);
/* locate palette and descs at end of page following fb */
fbi->palette = (u_long)lcdbase + fb_size + PAGE_SIZE - palette_mem_size;
return 0;
}
static void pxafb_setup_gpio (vidinfo_t *vid)
{
u_long lccr0;
/*
* setup is based on type of panel supported
*/
lccr0 = vid->pxa.reg_lccr0;
/* 4 bit interface */
if ((lccr0 & LCCR0_CMS) && (lccr0 & LCCR0_SDS) && !(lccr0 & LCCR0_DPD))
{
debug("Setting GPIO for 4 bit data\n");
/* bits 58-61 */
GPDR1 |= (0xf << 26);
GAFR1_U = (GAFR1_U & ~(0xff << 20)) | (0xaa << 20);
/* bits 74-77 */
GPDR2 |= (0xf << 10);
GAFR2_L = (GAFR2_L & ~(0xff << 20)) | (0xaa << 20);
}
/* 8 bit interface */
else if (((lccr0 & LCCR0_CMS) && ((lccr0 & LCCR0_SDS) || (lccr0 & LCCR0_DPD))) ||
(!(lccr0 & LCCR0_CMS) && !(lccr0 & LCCR0_PAS) && !(lccr0 & LCCR0_SDS)))
{
debug("Setting GPIO for 8 bit data\n");
/* bits 58-65 */
GPDR1 |= (0x3f << 26);
GPDR2 |= (0x3);
GAFR1_U = (GAFR1_U & ~(0xfff << 20)) | (0xaaa << 20);
GAFR2_L = (GAFR2_L & ~0xf) | (0xa);
/* bits 74-77 */
GPDR2 |= (0xf << 10);
GAFR2_L = (GAFR2_L & ~(0xff << 20)) | (0xaa << 20);
}
/* 16 bit interface */
else if (!(lccr0 & LCCR0_CMS) && ((lccr0 & LCCR0_SDS) || (lccr0 & LCCR0_PAS)))
{
debug("Setting GPIO for 16 bit data\n");
/* bits 58-77 */
GPDR1 |= (0x3f << 26);
GPDR2 |= 0x00003fff;
GAFR1_U = (GAFR1_U & ~(0xfff << 20)) | (0xaaa << 20);
GAFR2_L = (GAFR2_L & 0xf0000000) | 0x0aaaaaaa;
}
else
{
printf("pxafb_setup_gpio: unable to determine bits per pixel\n");
}
}
static void pxafb_enable_controller (vidinfo_t *vid)
{
debug("Enabling LCD controller\n");
/* Sequence from 11.7.10 */
LCCR3 = vid->pxa.reg_lccr3;
LCCR2 = vid->pxa.reg_lccr2;
LCCR1 = vid->pxa.reg_lccr1;
LCCR0 = vid->pxa.reg_lccr0 & ~LCCR0_ENB;
FDADR0 = vid->pxa.fdadr0;
FDADR1 = vid->pxa.fdadr1;
LCCR0 |= LCCR0_ENB;
CKEN |= CKEN16_LCD;
debug("FDADR0 = 0x%08x\n", (unsigned int)FDADR0);
debug("FDADR1 = 0x%08x\n", (unsigned int)FDADR1);
debug("LCCR0 = 0x%08x\n", (unsigned int)LCCR0);
debug("LCCR1 = 0x%08x\n", (unsigned int)LCCR1);
debug("LCCR2 = 0x%08x\n", (unsigned int)LCCR2);
debug("LCCR3 = 0x%08x\n", (unsigned int)LCCR3);
}
static int pxafb_init (vidinfo_t *vid)
{
struct pxafb_info *fbi = &vid->pxa;
debug("Configuring PXA LCD\n");
fbi->reg_lccr0 = REG_LCCR0;
fbi->reg_lccr3 = REG_LCCR3;
debug("vid: vl_col=%d hslen=%d lm=%d rm=%d\n",
vid->vl_col, vid->vl_hpw,
vid->vl_blw, vid->vl_elw);
debug("vid: vl_row=%d vslen=%d um=%d bm=%d\n",
vid->vl_row, vid->vl_vpw,
vid->vl_bfw, vid->vl_efw);
fbi->reg_lccr1 =
LCCR1_DisWdth(vid->vl_col) +
LCCR1_HorSnchWdth(vid->vl_hpw) +
LCCR1_BegLnDel(vid->vl_blw) +
LCCR1_EndLnDel(vid->vl_elw);
fbi->reg_lccr2 =
LCCR2_DisHght(vid->vl_row) +
LCCR2_VrtSnchWdth(vid->vl_vpw) +
LCCR2_BegFrmDel(vid->vl_bfw) +
LCCR2_EndFrmDel(vid->vl_efw);
fbi->reg_lccr3 = REG_LCCR3 & ~(LCCR3_HSP | LCCR3_VSP);
fbi->reg_lccr3 |= (vid->vl_hsp ? LCCR3_HorSnchL : LCCR3_HorSnchH)
| (vid->vl_vsp ? LCCR3_VrtSnchL : LCCR3_VrtSnchH);
/* setup dma descriptors */
fbi->dmadesc_fblow = (struct pxafb_dma_descriptor *)((unsigned int)fbi->palette - 3*16);
fbi->dmadesc_fbhigh = (struct pxafb_dma_descriptor *)((unsigned int)fbi->palette - 2*16);
fbi->dmadesc_palette = (struct pxafb_dma_descriptor *)((unsigned int)fbi->palette - 1*16);
#define BYTES_PER_PANEL ((fbi->reg_lccr0 & LCCR0_SDS) ? \
(vid->vl_col * vid->vl_row * NBITS(vid->vl_bpix) / 8 / 2) : \
(vid->vl_col * vid->vl_row * NBITS(vid->vl_bpix) / 8))
/* populate descriptors */
fbi->dmadesc_fblow->fdadr = (u_long)fbi->dmadesc_fblow;
fbi->dmadesc_fblow->fsadr = fbi->screen + BYTES_PER_PANEL;
fbi->dmadesc_fblow->fidr = 0;
fbi->dmadesc_fblow->ldcmd = BYTES_PER_PANEL;
fbi->fdadr1 = (u_long)fbi->dmadesc_fblow; /* only used in dual-panel mode */
fbi->dmadesc_fbhigh->fsadr = fbi->screen;
fbi->dmadesc_fbhigh->fidr = 0;
fbi->dmadesc_fbhigh->ldcmd = BYTES_PER_PANEL;
fbi->dmadesc_palette->fsadr = fbi->palette;
fbi->dmadesc_palette->fidr = 0;
fbi->dmadesc_palette->ldcmd = (fbi->palette_size * 2) | LDCMD_PAL;
if( NBITS(vid->vl_bpix) < 12)
{
/* assume any mode with <12 bpp is palette driven */
fbi->dmadesc_palette->fdadr = (u_long)fbi->dmadesc_fbhigh;
fbi->dmadesc_fbhigh->fdadr = (u_long)fbi->dmadesc_palette;
/* flips back and forth between pal and fbhigh */
fbi->fdadr0 = (u_long)fbi->dmadesc_palette;
}
else
{
/* palette shouldn't be loaded in true-color mode */
fbi->dmadesc_fbhigh->fdadr = (u_long)fbi->dmadesc_fbhigh;
fbi->fdadr0 = (u_long)fbi->dmadesc_fbhigh; /* no pal just fbhigh */
}
debug("fbi->dmadesc_fblow = 0x%lx\n", (u_long)fbi->dmadesc_fblow);
debug("fbi->dmadesc_fbhigh = 0x%lx\n", (u_long)fbi->dmadesc_fbhigh);
debug("fbi->dmadesc_palette = 0x%lx\n", (u_long)fbi->dmadesc_palette);
debug("fbi->dmadesc_fblow->fdadr = 0x%lx\n", fbi->dmadesc_fblow->fdadr);
debug("fbi->dmadesc_fbhigh->fdadr = 0x%lx\n", fbi->dmadesc_fbhigh->fdadr);
debug("fbi->dmadesc_palette->fdadr = 0x%lx\n", fbi->dmadesc_palette->fdadr);
debug("fbi->dmadesc_fblow->fsadr = 0x%lx\n", fbi->dmadesc_fblow->fsadr);
debug("fbi->dmadesc_fbhigh->fsadr = 0x%lx\n", fbi->dmadesc_fbhigh->fsadr);
debug("fbi->dmadesc_palette->fsadr = 0x%lx\n", fbi->dmadesc_palette->fsadr);
debug("fbi->dmadesc_fblow->ldcmd = 0x%lx\n", fbi->dmadesc_fblow->ldcmd);
debug("fbi->dmadesc_fbhigh->ldcmd = 0x%lx\n", fbi->dmadesc_fbhigh->ldcmd);
debug("fbi->dmadesc_palette->ldcmd = 0x%lx\n", fbi->dmadesc_palette->ldcmd);
return 0;
}
/************************************************************************/
/************************************************************************/
#endif /* CONFIG_LCD */
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