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u-boot/drivers/video/pxa_lcd.c
Mike Dunn 86e929e825 pxa_lcd: make lcd_enable() a weak pointer 
Make lcd_init() a weak pointer so that boards can overload it if necessary.  The
palmtreo680 board needs to wiggle some gpios and configure the pwm controller in
order to get the lcd and its backlight working.

Signed-off-by: Mike Dunn <mikedunn@newsguy.com>
2013-05-05 23:47:05 +02:00

641 lines
16 KiB
C
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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 <stdio_dev.h>
#include <lcd.h>
#include <asm/arch/pxa-regs.h>
#include <asm/io.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 = CONFIG_SYS_HIGH,
.vl_oep = CONFIG_SYS_HIGH,
.vl_hsp = CONFIG_SYS_HIGH,
.vl_vsp = CONFIG_SYS_HIGH,
.vl_dp = CONFIG_SYS_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 = CONFIG_SYS_HIGH,
.vl_oep = CONFIG_SYS_HIGH,
.vl_hsp = CONFIG_SYS_HIGH,
.vl_vsp = CONFIG_SYS_HIGH,
.vl_dp = CONFIG_SYS_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_VOIPAC_LCD
# define LCD_BPP LCD_COLOR8
# define LCD_INVERT_COLORS
/* you have to set lccr0 and lccr3 (including pcd) */
# define REG_LCCR0 0x043008f8
# define REG_LCCR3 0x0340FF08
vidinfo_t panel_info = {
.vl_col = 640,
.vl_row = 480,
.vl_width = 157,
.vl_height = 118,
.vl_clkp = CONFIG_SYS_HIGH,
.vl_oep = CONFIG_SYS_HIGH,
.vl_hsp = CONFIG_SYS_HIGH,
.vl_vsp = CONFIG_SYS_HIGH,
.vl_dp = CONFIG_SYS_HIGH,
.vl_bpix = LCD_BPP,
.vl_lbw = 0,
.vl_splt = 1,
.vl_clor = 1,
.vl_tft = 1,
.vl_hpw = 32,
.vl_blw = 144,
.vl_elw = 32,
.vl_vpw = 2,
.vl_bfw = 13,
.vl_efw = 30,
};
#endif /* CONFIG_VOIPAC_LCD */
/*----------------------------------------------------------------------*/
#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 = CONFIG_SYS_HIGH,
.vl_oep = CONFIG_SYS_HIGH,
.vl_hsp = CONFIG_SYS_HIGH,
.vl_vsp = CONFIG_SYS_HIGH,
.vl_dp = CONFIG_SYS_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 */
/*----------------------------------------------------------------------*/
#ifdef CONFIG_LMS283GF05
# define LCD_BPP LCD_COLOR8
/*# define LCD_INVERT_COLORS*/
/* you have to set lccr0 and lccr3 (including pcd) */
# define REG_LCCR0 0x043008f8
# define REG_LCCR3 0x03b00009
vidinfo_t panel_info = {
.vl_col = 240,
.vl_row = 320,
.vl_width = 240,
.vl_height = 320,
.vl_clkp = CONFIG_SYS_HIGH,
.vl_oep = CONFIG_SYS_LOW,
.vl_hsp = CONFIG_SYS_LOW,
.vl_vsp = CONFIG_SYS_LOW,
.vl_dp = CONFIG_SYS_HIGH,
.vl_bpix = LCD_BPP,
.vl_lbw = 0,
.vl_splt = 1,
.vl_clor = 1,
.vl_tft = 1,
.vl_hpw = 4,
.vl_blw = 4,
.vl_elw = 8,
.vl_vpw = 4,
.vl_bfw = 4,
.vl_efw = 8,
};
#endif /* CONFIG_LMS283GF05 */
/*----------------------------------------------------------------------*/
#ifdef CONFIG_ACX517AKN
# define LCD_BPP LCD_COLOR8
/* you have to set lccr0 and lccr3 (including pcd) */
# define REG_LCCR0 0x003008f9
# define REG_LCCR3 0x03700006
vidinfo_t panel_info = {
.vl_col = 320,
.vl_row = 320,
.vl_width = 320,
.vl_height = 320,
.vl_clkp = CONFIG_SYS_HIGH,
.vl_oep = CONFIG_SYS_LOW,
.vl_hsp = CONFIG_SYS_LOW,
.vl_vsp = CONFIG_SYS_LOW,
.vl_dp = CONFIG_SYS_HIGH,
.vl_bpix = LCD_BPP,
.vl_lbw = 0,
.vl_splt = 1,
.vl_clor = 1,
.vl_tft = 1,
.vl_hpw = 0x04,
.vl_blw = 0x1c,
.vl_elw = 0x08,
.vl_vpw = 0x01,
.vl_bfw = 0x07,
.vl_efw = 0x08,
};
#endif /* CONFIG_ACX517AKN */
#ifdef CONFIG_ACX544AKN
# define LCD_BPP LCD_COLOR16
/* you have to set lccr0 and lccr3 (including pcd) */
# define REG_LCCR0 0x003008f9
# define REG_LCCR3 0x04700007 /* 16bpp */
vidinfo_t panel_info = {
.vl_col = 320,
.vl_row = 320,
.vl_width = 320,
.vl_height = 320,
.vl_clkp = CONFIG_SYS_LOW,
.vl_oep = CONFIG_SYS_LOW,
.vl_hsp = CONFIG_SYS_LOW,
.vl_vsp = CONFIG_SYS_LOW,
.vl_dp = CONFIG_SYS_LOW,
.vl_bpix = LCD_BPP,
.vl_lbw = 0,
.vl_splt = 0,
.vl_clor = 1,
.vl_tft = 1,
.vl_hpw = 0x05,
.vl_blw = 0x13,
.vl_elw = 0x08,
.vl_vpw = 0x02,
.vl_bfw = 0x07,
.vl_efw = 0x05,
};
#endif /* CONFIG_ACX544AKN */
/*----------------------------------------------------------------------*/
#ifdef CONFIG_LQ038J7DH53
# define LCD_BPP LCD_COLOR8
/* you have to set lccr0 and lccr3 (including pcd) */
# define REG_LCCR0 0x003008f9
# define REG_LCCR3 0x03700004
vidinfo_t panel_info = {
.vl_col = 320,
.vl_row = 480,
.vl_width = 320,
.vl_height = 480,
.vl_clkp = CONFIG_SYS_HIGH,
.vl_oep = CONFIG_SYS_LOW,
.vl_hsp = CONFIG_SYS_LOW,
.vl_vsp = CONFIG_SYS_LOW,
.vl_dp = CONFIG_SYS_HIGH,
.vl_bpix = LCD_BPP,
.vl_lbw = 0,
.vl_splt = 1,
.vl_clor = 1,
.vl_tft = 1,
.vl_hpw = 0x04,
.vl_blw = 0x20,
.vl_elw = 0x01,
.vl_vpw = 0x01,
.vl_bfw = 0x04,
.vl_efw = 0x01,
};
#endif /* CONFIG_ACX517AKN */
/*----------------------------------------------------------------------*/
#ifdef CONFIG_LITTLETON_LCD
# define LCD_BPP LCD_COLOR8
/* you have to set lccr0 and lccr3 (including pcd) */
# define REG_LCCR0 0x003008f8
# define REG_LCCR3 0x0300FF04
vidinfo_t panel_info = {
.vl_col = 480,
.vl_row = 640,
.vl_width = 480,
.vl_height = 640,
.vl_clkp = CONFIG_SYS_HIGH,
.vl_oep = CONFIG_SYS_HIGH,
.vl_hsp = CONFIG_SYS_HIGH,
.vl_vsp = CONFIG_SYS_HIGH,
.vl_dp = CONFIG_SYS_HIGH,
.vl_bpix = LCD_BPP,
.vl_lbw = 0,
.vl_splt = 0,
.vl_clor = 0,
.vl_tft = 1,
.vl_hpw = 9,
.vl_blw = 8,
.vl_elw = 24,
.vl_vpw = 2,
.vl_bfw = 2,
.vl_efw = 4,
};
#endif /* CONFIG_LITTLETON_LCD */
/*----------------------------------------------------------------------*/
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);
}
/*----------------------------------------------------------------------*/
#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 */
/*----------------------------------------------------------------------*/
__weak void lcd_enable(void)
{
}
/************************************************************************/
/* ** 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;
}
#ifdef CONFIG_CPU_MONAHANS
static inline void pxafb_setup_gpio (vidinfo_t *vid) {}
#else
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 */
writel(readl(GPDR1) | (0xf << 26), GPDR1);
writel((readl(GAFR1_U) & ~(0xff << 20)) | (0xaa << 20),
GAFR1_U);
/* bits 74-77 */
writel(readl(GPDR2) | (0xf << 10), GPDR2);
writel((readl(GAFR2_L) & ~(0xff << 20)) | (0xaa << 20),
GAFR2_L);
}
/* 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 */
writel(readl(GPDR1) | (0x3f << 26), GPDR1);
writel(readl(GPDR2) | (0x3), GPDR2);
writel((readl(GAFR1_U) & ~(0xfff << 20)) | (0xaaa << 20),
GAFR1_U);
writel((readl(GAFR2_L) & ~0xf) | (0xa), GAFR2_L);
/* bits 74-77 */
writel(readl(GPDR2) | (0xf << 10), GPDR2);
writel((readl(GAFR2_L) & ~(0xff << 20)) | (0xaa << 20),
GAFR2_L);
}
/* 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 */
writel(readl(GPDR1) | (0x3f << 26), GPDR1);
writel(readl(GPDR2) | 0x00003fff, GPDR2);
writel((readl(GAFR1_U) & ~(0xfff << 20)) | (0xaaa << 20),
GAFR1_U);
writel((readl(GAFR2_L) & 0xf0000000) | 0x0aaaaaaa, GAFR2_L);
}
else
{
printf("pxafb_setup_gpio: unable to determine bits per pixel\n");
}
}
#endif
static void pxafb_enable_controller (vidinfo_t *vid)
{
debug("Enabling LCD controller\n");
/* Sequence from 11.7.10 */
writel(vid->pxa.reg_lccr3, LCCR3);
writel(vid->pxa.reg_lccr2, LCCR2);
writel(vid->pxa.reg_lccr1, LCCR1);
writel(vid->pxa.reg_lccr0 & ~LCCR0_ENB, LCCR0);
writel(vid->pxa.fdadr0, FDADR0);
writel(vid->pxa.fdadr1, FDADR1);
writel(readl(LCCR0) | LCCR0_ENB, LCCR0);
#ifdef CONFIG_CPU_MONAHANS
writel(readl(CKENA) | CKENA_1_LCD, CKENA);
#else
writel(readl(CKEN) | CKEN16_LCD, CKEN);
#endif
debug("FDADR0 = 0x%08x\n", readl(FDADR0));
debug("FDADR1 = 0x%08x\n", readl(FDADR1));
debug("LCCR0 = 0x%08x\n", readl(LCCR0));
debug("LCCR1 = 0x%08x\n", readl(LCCR1));
debug("LCCR2 = 0x%08x\n", readl(LCCR2));
debug("LCCR3 = 0x%08x\n", readl(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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