/* * 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 */