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openwrt-xburst/package/uboot-xburst/files/cpu/mips/nanonote_gpm940b0.c
lars 28dec42aa3 [package] Add uboot for xburst package 
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@20832 3c298f89-4303-0410-b956-a3cf2f4a3e73
2010-04-12 18:17:26 +00:00

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11 KiB
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/*
* JzRISC lcd controller
*
* xiangfu liu <xiangfu.z@gmail.com>
*
* 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
*/
#include <config.h>
#include <common.h>
#include <lcd.h>
#include <asm/io.h> /* virt_to_phys() */
#include <asm/jz4740.h>
#include "nanonote_gpm940b0.h"
#define align2(n) (n)=((((n)+1)>>1)<<1)
#define align4(n) (n)=((((n)+3)>>2)<<2)
#define align8(n) (n)=((((n)+7)>>3)<<3)
struct jzfb_info {
unsigned int cfg; /* panel mode and pin usage etc. */
unsigned int w;
unsigned int h;
unsigned int bpp; /* bit per pixel */
unsigned int fclk; /* frame clk */
unsigned int hsw; /* hsync width, in pclk */
unsigned int vsw; /* vsync width, in line count */
unsigned int elw; /* end of line, in pclk */
unsigned int blw; /* begin of line, in pclk */
unsigned int efw; /* end of frame, in line count */
unsigned int bfw; /* begin of frame, in line count */
};
static struct jzfb_info jzfb = {
MODE_8BIT_SERIAL_TFT | PCLK_N | HSYNC_N | VSYNC_N,
320, 240, 32, 70, 1, 1, 273, 140, 1, 20
};
vidinfo_t panel_info = {
320, 240, LCD_BPP,
};
int lcd_line_length;
int lcd_color_fg;
int lcd_color_bg;
/*
* Frame buffer memory information
*/
void *lcd_base; /* Start of framebuffer memory */
void *lcd_console_address; /* Start of console buffer */
short console_col;
short console_row;
void lcd_ctrl_init (void *lcdbase);
void lcd_enable (void);
void lcd_disable (void);
static int jz_lcd_init_mem(void *lcdbase, vidinfo_t *vid);
static void jz_lcd_desc_init(vidinfo_t *vid);
static int jz_lcd_hw_init( vidinfo_t *vid );
extern int flush_cache_all(void);
void lcd_ctrl_init (void *lcdbase)
{
__lcd_display_pin_init();
jz_lcd_init_mem(lcdbase, &panel_info);
jz_lcd_desc_init(&panel_info);
jz_lcd_hw_init(&panel_info);
__lcd_display_on() ;
}
/*
* Before enabled lcd controller, lcd registers should be configured correctly.
*/
void lcd_enable (void)
{
REG_LCD_CTRL &= ~(1<<4); /* LCDCTRL.DIS */
REG_LCD_CTRL |= 1<<3; /* LCDCTRL.ENA*/
}
void lcd_disable (void)
{
REG_LCD_CTRL |= (1<<4); /* LCDCTRL.DIS, regular disable */
/* REG_LCD_CTRL |= (1<<3); */ /* LCDCTRL.DIS, quikly disable */
}
static int jz_lcd_init_mem(void *lcdbase, vidinfo_t *vid)
{
u_long palette_mem_size;
struct jz_fb_info *fbi = &vid->jz_fb;
int fb_size = vid->vl_row * (vid->vl_col * NBITS (vid->vl_bpix)) / 8;
fbi->screen = (u_long)lcdbase;
fbi->palette_size = 256;
palette_mem_size = fbi->palette_size * sizeof(u16);
debug("jz_lcd.c 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 jz_lcd_desc_init(vidinfo_t *vid)
{
struct jz_fb_info * fbi;
fbi = &vid->jz_fb;
fbi->dmadesc_fblow = (struct jz_fb_dma_descriptor *)((unsigned int)fbi->palette - 3*16);
fbi->dmadesc_fbhigh = (struct jz_fb_dma_descriptor *)((unsigned int)fbi->palette - 2*16);
fbi->dmadesc_palette = (struct jz_fb_dma_descriptor *)((unsigned int)fbi->palette - 1*16);
#define BYTES_PER_PANEL (vid->vl_col * vid->vl_row * NBITS(vid->vl_bpix) / 8)
/* populate descriptors */
fbi->dmadesc_fblow->fdadr = virt_to_phys(fbi->dmadesc_fblow);
fbi->dmadesc_fblow->fsadr = virt_to_phys((void *)(fbi->screen + BYTES_PER_PANEL));
fbi->dmadesc_fblow->fidr = 0;
fbi->dmadesc_fblow->ldcmd = BYTES_PER_PANEL / 4 ;
fbi->fdadr1 = virt_to_phys(fbi->dmadesc_fblow); /* only used in dual-panel mode */
fbi->dmadesc_fbhigh->fsadr = virt_to_phys((void *)fbi->screen);
fbi->dmadesc_fbhigh->fidr = 0;
fbi->dmadesc_fbhigh->ldcmd = BYTES_PER_PANEL / 4; /* length in word */
fbi->dmadesc_palette->fsadr = virt_to_phys((void *)fbi->palette);
fbi->dmadesc_palette->fidr = 0;
fbi->dmadesc_palette->ldcmd = (fbi->palette_size * 2)/4 | (1<<28);
if(NBITS(vid->vl_bpix) < 12)
{
/* assume any mode with <12 bpp is palette driven */
fbi->dmadesc_palette->fdadr = virt_to_phys(fbi->dmadesc_fbhigh);
fbi->dmadesc_fbhigh->fdadr = virt_to_phys(fbi->dmadesc_palette);
/* flips back and forth between pal and fbhigh */
fbi->fdadr0 = virt_to_phys(fbi->dmadesc_palette);
} else {
/* palette shouldn't be loaded in true-color mode */
fbi->dmadesc_fbhigh->fdadr = virt_to_phys((void *)fbi->dmadesc_fbhigh);
fbi->fdadr0 = virt_to_phys(fbi->dmadesc_fbhigh); /* no pal just fbhigh */
}
flush_cache_all();
}
static int jz_lcd_hw_init(vidinfo_t *vid)
{
struct jz_fb_info *fbi = &vid->jz_fb;
unsigned int val = 0;
unsigned int pclk;
unsigned int stnH;
int pll_div;
/* Setting Control register */
switch (jzfb.bpp) {
case 1:
val |= LCD_CTRL_BPP_1;
break;
case 2:
val |= LCD_CTRL_BPP_2;
break;
case 4:
val |= LCD_CTRL_BPP_4;
break;
case 8:
val |= LCD_CTRL_BPP_8;
break;
case 15:
val |= LCD_CTRL_RGB555;
case 16:
val |= LCD_CTRL_BPP_16;
break;
case 17 ... 32:
val |= LCD_CTRL_BPP_18_24; /* target is 4bytes/pixel */
break;
default:
printf("jz_lcd.c The BPP %d is not supported\n", jzfb.bpp);
val |= LCD_CTRL_BPP_16;
break;
}
switch (jzfb.cfg & MODE_MASK) {
case MODE_STN_MONO_DUAL:
case MODE_STN_COLOR_DUAL:
case MODE_STN_MONO_SINGLE:
case MODE_STN_COLOR_SINGLE:
switch (jzfb.bpp) {
case 1:
/* val |= LCD_CTRL_PEDN; */
case 2:
val |= LCD_CTRL_FRC_2;
break;
case 4:
val |= LCD_CTRL_FRC_4;
break;
case 8:
default:
val |= LCD_CTRL_FRC_16;
break;
}
break;
}
val |= LCD_CTRL_BST_16; /* Burst Length is 16WORD=64Byte */
val |= LCD_CTRL_OFUP; /* OutFIFO underrun protect */
switch (jzfb.cfg & MODE_MASK) {
case MODE_STN_MONO_DUAL:
case MODE_STN_COLOR_DUAL:
case MODE_STN_MONO_SINGLE:
case MODE_STN_COLOR_SINGLE:
switch (jzfb.cfg & STN_DAT_PINMASK) {
case STN_DAT_PIN1:
/* Do not adjust the hori-param value. */
break;
case STN_DAT_PIN2:
align2(jzfb.hsw);
align2(jzfb.elw);
align2(jzfb.blw);
break;
case STN_DAT_PIN4:
align4(jzfb.hsw);
align4(jzfb.elw);
align4(jzfb.blw);
break;
case STN_DAT_PIN8:
align8(jzfb.hsw);
align8(jzfb.elw);
align8(jzfb.blw);
break;
}
break;
}
REG_LCD_CTRL = val;
switch (jzfb.cfg & MODE_MASK) {
case MODE_STN_MONO_DUAL:
case MODE_STN_COLOR_DUAL:
case MODE_STN_MONO_SINGLE:
case MODE_STN_COLOR_SINGLE:
if (((jzfb.cfg & MODE_MASK) == MODE_STN_MONO_DUAL) ||
((jzfb.cfg & MODE_MASK) == MODE_STN_COLOR_DUAL))
stnH = jzfb.h >> 1;
else
stnH = jzfb.h;
REG_LCD_VSYNC = (0 << 16) | jzfb.vsw;
REG_LCD_HSYNC = ((jzfb.blw+jzfb.w) << 16) | (jzfb.blw+jzfb.w+jzfb.hsw);
/* Screen setting */
REG_LCD_VAT = ((jzfb.blw + jzfb.w + jzfb.hsw + jzfb.elw) << 16) | (stnH + jzfb.vsw + jzfb.bfw + jzfb.efw);
REG_LCD_DAH = (jzfb.blw << 16) | (jzfb.blw + jzfb.w);
REG_LCD_DAV = (0 << 16) | (stnH);
/* AC BIAs signal */
REG_LCD_PS = (0 << 16) | (stnH+jzfb.vsw+jzfb.efw+jzfb.bfw);
break;
case MODE_TFT_GEN:
case MODE_TFT_SHARP:
case MODE_TFT_CASIO:
case MODE_TFT_SAMSUNG:
case MODE_8BIT_SERIAL_TFT:
case MODE_TFT_18BIT:
REG_LCD_VSYNC = (0 << 16) | jzfb.vsw;
REG_LCD_HSYNC = (0 << 16) | jzfb.hsw;
REG_LCD_DAV =((jzfb.vsw+jzfb.bfw) << 16) | (jzfb.vsw +jzfb.bfw+jzfb.h);
REG_LCD_DAH = ((jzfb.hsw + jzfb.blw) << 16) | (jzfb.hsw + jzfb.blw + jzfb.w );
REG_LCD_VAT = (((jzfb.blw + jzfb.w + jzfb.elw + jzfb.hsw)) << 16) \
| (jzfb.vsw + jzfb.bfw + jzfb.h + jzfb.efw);
break;
}
switch (jzfb.cfg & MODE_MASK) {
case MODE_TFT_SAMSUNG:
{
unsigned int total, tp_s, tp_e, ckv_s, ckv_e;
unsigned int rev_s, rev_e, inv_s, inv_e;
pclk = val * (jzfb.w + jzfb.hsw + jzfb.elw + jzfb.blw) *
(jzfb.h + jzfb.vsw + jzfb.efw + jzfb.bfw); /* Pixclk */
total = jzfb.blw + jzfb.w + jzfb.elw + jzfb.hsw;
tp_s = jzfb.blw + jzfb.w + 1;
tp_e = tp_s + 1;
/* ckv_s = tp_s - jz_clocks.pixclk/(1000000000/4100); */
ckv_s = tp_s - pclk/(1000000000/4100);
ckv_e = tp_s + total;
rev_s = tp_s - 11; /* -11.5 clk */
rev_e = rev_s + total;
inv_s = tp_s;
inv_e = inv_s + total;
REG_LCD_CLS = (tp_s << 16) | tp_e;
REG_LCD_PS = (ckv_s << 16) | ckv_e;
REG_LCD_SPL = (rev_s << 16) | rev_e;
REG_LCD_REV = (inv_s << 16) | inv_e;
jzfb.cfg |= STFT_REVHI | STFT_SPLHI;
break;
}
case MODE_TFT_SHARP:
{
unsigned int total, cls_s, cls_e, ps_s, ps_e;
unsigned int spl_s, spl_e, rev_s, rev_e;
total = jzfb.blw + jzfb.w + jzfb.elw + jzfb.hsw;
spl_s = 1;
spl_e = spl_s + 1;
cls_s = 0;
cls_e = total - 60; /* > 4us (pclk = 80ns) */
ps_s = cls_s;
ps_e = cls_e;
rev_s = total - 40; /* > 3us (pclk = 80ns) */
rev_e = rev_s + total;
jzfb.cfg |= STFT_PSHI;
REG_LCD_SPL = (spl_s << 16) | spl_e;
REG_LCD_CLS = (cls_s << 16) | cls_e;
REG_LCD_PS = (ps_s << 16) | ps_e;
REG_LCD_REV = (rev_s << 16) | rev_e;
break;
}
case MODE_TFT_CASIO:
break;
}
/* Configure the LCD panel */
REG_LCD_CFG = jzfb.cfg;
/* Timing setting */
__cpm_stop_lcd();
val = jzfb.fclk; /* frame clk */
if ( (jzfb.cfg & MODE_MASK) != MODE_8BIT_SERIAL_TFT) {
pclk = val * (jzfb.w + jzfb.hsw + jzfb.elw + jzfb.blw) *
(jzfb.h + jzfb.vsw + jzfb.efw + jzfb.bfw); /* Pixclk */
} else {
/* serial mode: Hsync period = 3*Width_Pixel */
pclk = val * (jzfb.w*3 + jzfb.hsw + jzfb.elw + jzfb.blw) *
(jzfb.h + jzfb.vsw + jzfb.efw + jzfb.bfw); /* Pixclk */
}
if (((jzfb.cfg & MODE_MASK) == MODE_STN_COLOR_SINGLE) ||
((jzfb.cfg & MODE_MASK) == MODE_STN_COLOR_DUAL))
pclk = (pclk * 3);
if (((jzfb.cfg & MODE_MASK) == MODE_STN_COLOR_SINGLE) ||
((jzfb.cfg & MODE_MASK) == MODE_STN_COLOR_DUAL) ||
((jzfb.cfg & MODE_MASK) == MODE_STN_MONO_SINGLE) ||
((jzfb.cfg & MODE_MASK) == MODE_STN_MONO_DUAL))
pclk = pclk >> ((jzfb.cfg & STN_DAT_PINMASK) >> 4);
if (((jzfb.cfg & MODE_MASK) == MODE_STN_COLOR_DUAL) ||
((jzfb.cfg & MODE_MASK) == MODE_STN_MONO_DUAL))
pclk >>= 1;
pll_div = ( REG_CPM_CPCCR & CPM_CPCCR_PCS ); /* clock source,0:pllout/2 1: pllout */
pll_div = pll_div ? 1 : 2 ;
val = ( __cpm_get_pllout()/pll_div ) / pclk;
val--;
if ( val > 0x1ff ) {
printf("CPM_LPCDR too large, set it to 0x1ff\n");
val = 0x1ff;
}
__cpm_set_pixdiv(val);
val = pclk * 3 ; /* LCDClock > 2.5*Pixclock */
if ( val > 150000000 ) {
printf("Warning: LCDClock=%d\n, LCDClock must less or equal to 150MHz.\n", val);
printf("Change LCDClock to 150MHz\n");
val = 150000000;
}
val = ( __cpm_get_pllout()/pll_div ) / val;
val--;
if ( val > 0x1f ) {
printf("CPM_CPCCR.LDIV too large, set it to 0x1f\n");
val = 0x1f;
}
__cpm_set_ldiv( val );
REG_CPM_CPCCR |= CPM_CPCCR_CE ; /* update divide */
__cpm_start_lcd();
udelay(1000);
REG_LCD_DA0 = fbi->fdadr0; /* frame descripter*/
if (((jzfb.cfg & MODE_MASK) == MODE_STN_COLOR_DUAL) ||
((jzfb.cfg & MODE_MASK) == MODE_STN_MONO_DUAL))
REG_LCD_DA1 = fbi->fdadr1; /* frame descripter*/
return 0;
}
void lcd_setcolreg (ushort regno, ushort red, ushort green, ushort blue)
{
}
void lcd_initcolregs (void)
{
}
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