4 * (C) Copyright 2001-2002
5 * Wolfgang Denk, DENX Software Engineering -- wd@denx.de
7 * See file CREDITS for list of people who contributed to this
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of
13 * the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
26 /************************************************************************/
28 /************************************************************************/
34 #include <linux/types.h>
35 #include <stdio_dev.h>
37 #include <asm/arch/pxa-regs.h>
44 /*----------------------------------------------------------------------*/
46 * Define panel bpp, LCCR0, LCCR3 and panel_info video struct for
51 /* LCD outputs connected to a video DAC */
52 # define LCD_BPP LCD_COLOR8
54 /* you have to set lccr0 and lccr3 (including pcd) */
55 # define REG_LCCR0 0x003008f8
56 # define REG_LCCR3 0x0300FF01
58 /* 640x480x16 @ 61 Hz */
59 vidinfo_t panel_info = {
64 .vl_clkp = CONFIG_SYS_HIGH,
65 .vl_oep = CONFIG_SYS_HIGH,
66 .vl_hsp = CONFIG_SYS_HIGH,
67 .vl_vsp = CONFIG_SYS_HIGH,
68 .vl_dp = CONFIG_SYS_HIGH,
81 #endif /* CONFIG_PXA_VIDEO */
83 /*----------------------------------------------------------------------*/
84 #ifdef CONFIG_SHARP_LM8V31
86 # define LCD_BPP LCD_COLOR8
87 # define LCD_INVERT_COLORS /* Needed for colors to be correct, but why? */
89 /* you have to set lccr0 and lccr3 (including pcd) */
90 # define REG_LCCR0 0x0030087C
91 # define REG_LCCR3 0x0340FF08
93 vidinfo_t panel_info = {
98 .vl_clkp = CONFIG_SYS_HIGH,
99 .vl_oep = CONFIG_SYS_HIGH,
100 .vl_hsp = CONFIG_SYS_HIGH,
101 .vl_vsp = CONFIG_SYS_HIGH,
102 .vl_dp = CONFIG_SYS_HIGH,
115 #endif /* CONFIG_SHARP_LM8V31 */
116 /*----------------------------------------------------------------------*/
117 #ifdef CONFIG_VOIPAC_LCD
119 # define LCD_BPP LCD_COLOR8
120 # define LCD_INVERT_COLORS
122 /* you have to set lccr0 and lccr3 (including pcd) */
123 # define REG_LCCR0 0x043008f8
124 # define REG_LCCR3 0x0340FF08
126 vidinfo_t panel_info = {
131 .vl_clkp = CONFIG_SYS_HIGH,
132 .vl_oep = CONFIG_SYS_HIGH,
133 .vl_hsp = CONFIG_SYS_HIGH,
134 .vl_vsp = CONFIG_SYS_HIGH,
135 .vl_dp = CONFIG_SYS_HIGH,
148 #endif /* CONFIG_VOIPAC_LCD */
150 /*----------------------------------------------------------------------*/
151 #ifdef CONFIG_HITACHI_SX14
152 /* Hitachi SX14Q004-ZZA color STN LCD */
153 #define LCD_BPP LCD_COLOR8
155 /* you have to set lccr0 and lccr3 (including pcd) */
156 #define REG_LCCR0 0x00301079
157 #define REG_LCCR3 0x0340FF20
159 vidinfo_t panel_info = {
164 .vl_clkp = CONFIG_SYS_HIGH,
165 .vl_oep = CONFIG_SYS_HIGH,
166 .vl_hsp = CONFIG_SYS_HIGH,
167 .vl_vsp = CONFIG_SYS_HIGH,
168 .vl_dp = CONFIG_SYS_HIGH,
181 #endif /* CONFIG_HITACHI_SX14 */
183 /*----------------------------------------------------------------------*/
184 #ifdef CONFIG_LMS283GF05
186 # define LCD_BPP LCD_COLOR8
187 /*# define LCD_INVERT_COLORS*/
189 /* you have to set lccr0 and lccr3 (including pcd) */
190 # define REG_LCCR0 0x043008f8
191 # define REG_LCCR3 0x03b00009
193 vidinfo_t panel_info = {
198 .vl_clkp = CONFIG_SYS_HIGH,
199 .vl_oep = CONFIG_SYS_LOW,
200 .vl_hsp = CONFIG_SYS_LOW,
201 .vl_vsp = CONFIG_SYS_LOW,
202 .vl_dp = CONFIG_SYS_HIGH,
215 #endif /* CONFIG_LMS283GF05 */
217 /*----------------------------------------------------------------------*/
219 #ifdef CONFIG_ACX517AKN
221 # define LCD_BPP LCD_COLOR8
223 /* you have to set lccr0 and lccr3 (including pcd) */
224 # define REG_LCCR0 0x003008f9
225 # define REG_LCCR3 0x03700006
227 vidinfo_t panel_info = {
232 .vl_clkp = CONFIG_SYS_HIGH,
233 .vl_oep = CONFIG_SYS_LOW,
234 .vl_hsp = CONFIG_SYS_LOW,
235 .vl_vsp = CONFIG_SYS_LOW,
236 .vl_dp = CONFIG_SYS_HIGH,
249 #endif /* CONFIG_ACX517AKN */
251 /*----------------------------------------------------------------------*/
253 #if LCD_BPP == LCD_COLOR8
254 void lcd_setcolreg (ushort regno, ushort red, ushort green, ushort blue);
256 #if LCD_BPP == LCD_MONOCHROME
257 void lcd_initcolregs (void);
260 #ifdef NOT_USED_SO_FAR
261 void lcd_disable (void);
262 void lcd_getcolreg (ushort regno, ushort *red, ushort *green, ushort *blue);
263 #endif /* NOT_USED_SO_FAR */
265 void lcd_ctrl_init (void *lcdbase);
266 void lcd_enable (void);
272 void *lcd_base; /* Start of framebuffer memory */
273 void *lcd_console_address; /* Start of console buffer */
278 static int pxafb_init_mem (void *lcdbase, vidinfo_t *vid);
279 static void pxafb_setup_gpio (vidinfo_t *vid);
280 static void pxafb_enable_controller (vidinfo_t *vid);
281 static int pxafb_init (vidinfo_t *vid);
282 /************************************************************************/
284 /************************************************************************/
285 /* --------------- PXA chipset specific functions ------------------- */
286 /************************************************************************/
288 void lcd_ctrl_init (void *lcdbase)
290 pxafb_init_mem(lcdbase, &panel_info);
291 pxafb_init(&panel_info);
292 pxafb_setup_gpio(&panel_info);
293 pxafb_enable_controller(&panel_info);
296 /*----------------------------------------------------------------------*/
297 #ifdef NOT_USED_SO_FAR
299 lcd_getcolreg (ushort regno, ushort *red, ushort *green, ushort *blue)
302 #endif /* NOT_USED_SO_FAR */
304 /*----------------------------------------------------------------------*/
305 #if LCD_BPP == LCD_COLOR8
307 lcd_setcolreg (ushort regno, ushort red, ushort green, ushort blue)
309 struct pxafb_info *fbi = &panel_info.pxa;
310 unsigned short *palette = (unsigned short *)fbi->palette;
313 if (regno < fbi->palette_size) {
314 val = ((red << 8) & 0xf800);
315 val |= ((green << 4) & 0x07e0);
316 val |= (blue & 0x001f);
318 #ifdef LCD_INVERT_COLORS
319 palette[regno] = ~val;
321 palette[regno] = val;
325 debug ("setcolreg: reg %2d @ %p: R=%02X G=%02X B=%02X => %04X\n",
326 regno, &palette[regno],
330 #endif /* LCD_COLOR8 */
332 /*----------------------------------------------------------------------*/
333 #if LCD_BPP == LCD_MONOCHROME
334 void lcd_initcolregs (void)
336 struct pxafb_info *fbi = &panel_info.pxa;
337 cmap = (ushort *)fbi->palette;
340 for (regno = 0; regno < 16; regno++) {
342 cmap[(regno * 2) + 1] = regno & 0x0f;
345 #endif /* LCD_MONOCHROME */
347 /*----------------------------------------------------------------------*/
348 void lcd_enable (void)
352 /*----------------------------------------------------------------------*/
353 #ifdef NOT_USED_SO_FAR
354 static void lcd_disable (void)
357 #endif /* NOT_USED_SO_FAR */
359 /*----------------------------------------------------------------------*/
361 /************************************************************************/
362 /* ** PXA255 specific routines */
363 /************************************************************************/
366 * Calculate fb size for VIDEOLFB_ATAG. Size returned contains fb,
367 * descriptors and palette areas.
369 ulong calc_fbsize (void)
372 int line_length = (panel_info.vl_col * NBITS (panel_info.vl_bpix)) / 8;
374 size = line_length * panel_info.vl_row;
380 static int pxafb_init_mem (void *lcdbase, vidinfo_t *vid)
382 u_long palette_mem_size;
383 struct pxafb_info *fbi = &vid->pxa;
384 int fb_size = vid->vl_row * (vid->vl_col * NBITS (vid->vl_bpix)) / 8;
386 fbi->screen = (u_long)lcdbase;
388 fbi->palette_size = NBITS(vid->vl_bpix) == 8 ? 256 : 16;
389 palette_mem_size = fbi->palette_size * sizeof(u16);
391 debug("palette_mem_size = 0x%08lx\n", (u_long) palette_mem_size);
392 /* locate palette and descs at end of page following fb */
393 fbi->palette = (u_long)lcdbase + fb_size + PAGE_SIZE - palette_mem_size;
397 #ifdef CONFIG_CPU_MONAHANS
398 static inline void pxafb_setup_gpio (vidinfo_t *vid) {}
400 static void pxafb_setup_gpio (vidinfo_t *vid)
405 * setup is based on type of panel supported
408 lccr0 = vid->pxa.reg_lccr0;
410 /* 4 bit interface */
411 if ((lccr0 & LCCR0_CMS) && (lccr0 & LCCR0_SDS) && !(lccr0 & LCCR0_DPD))
413 debug("Setting GPIO for 4 bit data\n");
415 writel(readl(GPDR1) | (0xf << 26), GPDR1);
416 writel((readl(GAFR1_U) & ~(0xff << 20)) | (0xaa << 20),
420 writel(readl(GPDR2) | (0xf << 10), GPDR2);
421 writel((readl(GAFR2_L) & ~(0xff << 20)) | (0xaa << 20),
425 /* 8 bit interface */
426 else if (((lccr0 & LCCR0_CMS) && ((lccr0 & LCCR0_SDS) || (lccr0 & LCCR0_DPD))) ||
427 (!(lccr0 & LCCR0_CMS) && !(lccr0 & LCCR0_PAS) && !(lccr0 & LCCR0_SDS)))
429 debug("Setting GPIO for 8 bit data\n");
431 writel(readl(GPDR1) | (0x3f << 26), GPDR1);
432 writel(readl(GPDR2) | (0x3), GPDR2);
434 writel((readl(GAFR1_U) & ~(0xfff << 20)) | (0xaaa << 20),
436 writel((readl(GAFR2_L) & ~0xf) | (0xa), GAFR2_L);
439 writel(readl(GPDR2) | (0xf << 10), GPDR2);
440 writel((readl(GAFR2_L) & ~(0xff << 20)) | (0xaa << 20),
444 /* 16 bit interface */
445 else if (!(lccr0 & LCCR0_CMS) && ((lccr0 & LCCR0_SDS) || (lccr0 & LCCR0_PAS)))
447 debug("Setting GPIO for 16 bit data\n");
449 writel(readl(GPDR1) | (0x3f << 26), GPDR1);
450 writel(readl(GPDR2) | 0x00003fff, GPDR2);
452 writel((readl(GAFR1_U) & ~(0xfff << 20)) | (0xaaa << 20),
454 writel((readl(GAFR2_L) & 0xf0000000) | 0x0aaaaaaa, GAFR2_L);
458 printf("pxafb_setup_gpio: unable to determine bits per pixel\n");
463 static void pxafb_enable_controller (vidinfo_t *vid)
465 debug("Enabling LCD controller\n");
467 /* Sequence from 11.7.10 */
468 writel(vid->pxa.reg_lccr3, LCCR3);
469 writel(vid->pxa.reg_lccr2, LCCR2);
470 writel(vid->pxa.reg_lccr1, LCCR1);
471 writel(vid->pxa.reg_lccr0 & ~LCCR0_ENB, LCCR0);
472 writel(vid->pxa.fdadr0, FDADR0);
473 writel(vid->pxa.fdadr1, FDADR1);
474 writel(readl(LCCR0) | LCCR0_ENB, LCCR0);
476 #ifdef CONFIG_CPU_MONAHANS
477 writel(readl(CKENA) | CKENA_1_LCD, CKENA);
479 writel(readl(CKEN) | CKEN16_LCD, CKEN);
482 debug("FDADR0 = 0x%08x\n", readl(FDADR0));
483 debug("FDADR1 = 0x%08x\n", readl(FDADR1));
484 debug("LCCR0 = 0x%08x\n", readl(LCCR0));
485 debug("LCCR1 = 0x%08x\n", readl(LCCR1));
486 debug("LCCR2 = 0x%08x\n", readl(LCCR2));
487 debug("LCCR3 = 0x%08x\n", readl(LCCR3));
490 static int pxafb_init (vidinfo_t *vid)
492 struct pxafb_info *fbi = &vid->pxa;
494 debug("Configuring PXA LCD\n");
496 fbi->reg_lccr0 = REG_LCCR0;
497 fbi->reg_lccr3 = REG_LCCR3;
499 debug("vid: vl_col=%d hslen=%d lm=%d rm=%d\n",
500 vid->vl_col, vid->vl_hpw,
501 vid->vl_blw, vid->vl_elw);
502 debug("vid: vl_row=%d vslen=%d um=%d bm=%d\n",
503 vid->vl_row, vid->vl_vpw,
504 vid->vl_bfw, vid->vl_efw);
507 LCCR1_DisWdth(vid->vl_col) +
508 LCCR1_HorSnchWdth(vid->vl_hpw) +
509 LCCR1_BegLnDel(vid->vl_blw) +
510 LCCR1_EndLnDel(vid->vl_elw);
513 LCCR2_DisHght(vid->vl_row) +
514 LCCR2_VrtSnchWdth(vid->vl_vpw) +
515 LCCR2_BegFrmDel(vid->vl_bfw) +
516 LCCR2_EndFrmDel(vid->vl_efw);
518 fbi->reg_lccr3 = REG_LCCR3 & ~(LCCR3_HSP | LCCR3_VSP);
519 fbi->reg_lccr3 |= (vid->vl_hsp ? LCCR3_HorSnchL : LCCR3_HorSnchH)
520 | (vid->vl_vsp ? LCCR3_VrtSnchL : LCCR3_VrtSnchH);
523 /* setup dma descriptors */
524 fbi->dmadesc_fblow = (struct pxafb_dma_descriptor *)((unsigned int)fbi->palette - 3*16);
525 fbi->dmadesc_fbhigh = (struct pxafb_dma_descriptor *)((unsigned int)fbi->palette - 2*16);
526 fbi->dmadesc_palette = (struct pxafb_dma_descriptor *)((unsigned int)fbi->palette - 1*16);
528 #define BYTES_PER_PANEL ((fbi->reg_lccr0 & LCCR0_SDS) ? \
529 (vid->vl_col * vid->vl_row * NBITS(vid->vl_bpix) / 8 / 2) : \
530 (vid->vl_col * vid->vl_row * NBITS(vid->vl_bpix) / 8))
532 /* populate descriptors */
533 fbi->dmadesc_fblow->fdadr = (u_long)fbi->dmadesc_fblow;
534 fbi->dmadesc_fblow->fsadr = fbi->screen + BYTES_PER_PANEL;
535 fbi->dmadesc_fblow->fidr = 0;
536 fbi->dmadesc_fblow->ldcmd = BYTES_PER_PANEL;
538 fbi->fdadr1 = (u_long)fbi->dmadesc_fblow; /* only used in dual-panel mode */
540 fbi->dmadesc_fbhigh->fsadr = fbi->screen;
541 fbi->dmadesc_fbhigh->fidr = 0;
542 fbi->dmadesc_fbhigh->ldcmd = BYTES_PER_PANEL;
544 fbi->dmadesc_palette->fsadr = fbi->palette;
545 fbi->dmadesc_palette->fidr = 0;
546 fbi->dmadesc_palette->ldcmd = (fbi->palette_size * 2) | LDCMD_PAL;
548 if( NBITS(vid->vl_bpix) < 12)
550 /* assume any mode with <12 bpp is palette driven */
551 fbi->dmadesc_palette->fdadr = (u_long)fbi->dmadesc_fbhigh;
552 fbi->dmadesc_fbhigh->fdadr = (u_long)fbi->dmadesc_palette;
553 /* flips back and forth between pal and fbhigh */
554 fbi->fdadr0 = (u_long)fbi->dmadesc_palette;
558 /* palette shouldn't be loaded in true-color mode */
559 fbi->dmadesc_fbhigh->fdadr = (u_long)fbi->dmadesc_fbhigh;
560 fbi->fdadr0 = (u_long)fbi->dmadesc_fbhigh; /* no pal just fbhigh */
563 debug("fbi->dmadesc_fblow = 0x%lx\n", (u_long)fbi->dmadesc_fblow);
564 debug("fbi->dmadesc_fbhigh = 0x%lx\n", (u_long)fbi->dmadesc_fbhigh);
565 debug("fbi->dmadesc_palette = 0x%lx\n", (u_long)fbi->dmadesc_palette);
567 debug("fbi->dmadesc_fblow->fdadr = 0x%lx\n", fbi->dmadesc_fblow->fdadr);
568 debug("fbi->dmadesc_fbhigh->fdadr = 0x%lx\n", fbi->dmadesc_fbhigh->fdadr);
569 debug("fbi->dmadesc_palette->fdadr = 0x%lx\n", fbi->dmadesc_palette->fdadr);
571 debug("fbi->dmadesc_fblow->fsadr = 0x%lx\n", fbi->dmadesc_fblow->fsadr);
572 debug("fbi->dmadesc_fbhigh->fsadr = 0x%lx\n", fbi->dmadesc_fbhigh->fsadr);
573 debug("fbi->dmadesc_palette->fsadr = 0x%lx\n", fbi->dmadesc_palette->fsadr);
575 debug("fbi->dmadesc_fblow->ldcmd = 0x%lx\n", fbi->dmadesc_fblow->ldcmd);
576 debug("fbi->dmadesc_fbhigh->ldcmd = 0x%lx\n", fbi->dmadesc_fbhigh->ldcmd);
577 debug("fbi->dmadesc_palette->ldcmd = 0x%lx\n", fbi->dmadesc_palette->ldcmd);
582 /************************************************************************/
583 /************************************************************************/
585 #endif /* CONFIG_LCD */