Commit a877880c authored by York Sun's avatar York Sun Committed by Jon Loeliger
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8610: Add 8610 DIU display driver



1280x1024 and 1024x768 @ 32 bpp are supported now.
DVI, Single-link LVDS, Double-link LVDS are all supported.

Environmental variable "monitor" is used to specify monitor port.

A new command "diufb" is introduced to reinitialize monitor
and display a BMP file in the memory. So far, 1-bit, 4-bit,
8-bit and 24-bit BMP formats are supported.

    diufb init
        - initialize the diu driver
    Enable the port specified in the environmental variable "monitor"

    diufb addr
        - display bmp file in memory.
    The bmp image should be no bigger than the resolution, 1280x1024
    for DVI and double-link LVDS, 1024x768 for single-link LVDS.

Note, this driver allocate memory but doesn't free it after use
It is written on purpose -- to avoid a failure of reallocation
due to memory fragement.

ECC of DDR is disabled for DIU performance. L2 data cache is also disabled.
Signed-off-by: default avatarYork Sun <yorksun@freescale.com>
Signed-off-by: default avatarJon loeliger <jdl@freescale.com>
parent 52e5ddfe
......@@ -31,7 +31,9 @@ LIB = $(obj)lib$(VENDOR).a
COBJS := sys_eeprom.o \
pixis.o \
pq-mds-pib.o
pq-mds-pib.o \
fsl_logo_bmp.o \
fsl_diu_fb.o
SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
OBJS := $(addprefix $(obj),$(COBJS))
......
/*
* Copyright 2007 Freescale Semiconductor, Inc.
* York Sun <yorksun@freescale.com>
*
* FSL DIU Framebuffer driver
*
* 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
*/
#include <common.h>
#include <i2c.h>
#include <malloc.h>
#ifdef CONFIG_FSL_DIU_FB
#include "fsl_diu_fb.h"
#ifdef DEBUG
#define DPRINTF(fmt, args...) printf("%s: " fmt,__FUNCTION__,## args)
#else
#define DPRINTF(fmt, args...)
#endif
struct fb_var_screeninfo {
unsigned int xres; /* visible resolution */
unsigned int yres;
unsigned int bits_per_pixel; /* guess what */
/* Timing: All values in pixclocks, except pixclock (of course) */
unsigned int pixclock; /* pixel clock in ps (pico seconds) */
unsigned int left_margin; /* time from sync to picture */
unsigned int right_margin; /* time from picture to sync */
unsigned int upper_margin; /* time from sync to picture */
unsigned int lower_margin;
unsigned int hsync_len; /* length of horizontal sync */
unsigned int vsync_len; /* length of vertical sync */
unsigned int sync; /* see FB_SYNC_* */
unsigned int vmode; /* see FB_VMODE_* */
unsigned int rotate; /* angle we rotate counter clockwise */
};
struct fb_info {
struct fb_var_screeninfo var; /* Current var */
unsigned long smem_start; /* Start of frame buffer mem */
/* (physical address) */
unsigned int smem_len; /* Length of frame buffer mem */
unsigned int type; /* see FB_TYPE_* */
unsigned int line_length; /* length of a line in bytes */
char *screen_base;
unsigned long screen_size;
int logo_height;
unsigned int logo_size;
};
struct fb_videomode {
const char *name; /* optional */
unsigned int refresh; /* optional */
unsigned int xres;
unsigned int yres;
unsigned int pixclock;
unsigned int left_margin;
unsigned int right_margin;
unsigned int upper_margin;
unsigned int lower_margin;
unsigned int hsync_len;
unsigned int vsync_len;
unsigned int sync;
unsigned int vmode;
unsigned int flag;
};
#define FB_SYNC_VERT_HIGH_ACT 2 /* vertical sync high active */
#define FB_SYNC_COMP_HIGH_ACT 8 /* composite sync high active */
#define FB_VMODE_NONINTERLACED 0 /* non interlaced */
/*
* These parameters give default parameters
* for video output 1024x768,
* FIXME - change timing to proper amounts
* hsync 31.5kHz, vsync 60Hz
*/
static struct fb_videomode fsl_diu_mode_1024 = {
.refresh = 60,
.xres = 1024,
.yres = 768,
.pixclock = 15385,
.left_margin = 160,
.right_margin = 24,
.upper_margin = 29,
.lower_margin = 3,
.hsync_len = 136,
.vsync_len = 6,
.sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
.vmode = FB_VMODE_NONINTERLACED
};
static struct fb_videomode fsl_diu_mode_1280 = {
.name = "1280x1024-60",
.refresh = 60,
.xres = 1280,
.yres = 1024,
.pixclock = 9375,
.left_margin = 38,
.right_margin = 128,
.upper_margin = 2,
.lower_margin = 7,
.hsync_len = 216,
.vsync_len = 37,
.sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
.vmode = FB_VMODE_NONINTERLACED
};
/*
* These are the fields of area descriptor(in DDR memory) for every plane
*/
struct diu_ad {
/* Word 0(32-bit) in DDR memory */
unsigned int pix_fmt; /* hard coding pixel format */
/* Word 1(32-bit) in DDR memory */
unsigned int addr;
/* Word 2(32-bit) in DDR memory */
unsigned int src_size_g_alpha;
/* Word 3(32-bit) in DDR memory */
unsigned int aoi_size;
/* Word 4(32-bit) in DDR memory */
unsigned int offset_xyi;
/* Word 5(32-bit) in DDR memory */
unsigned int offset_xyd;
/* Word 6(32-bit) in DDR memory */
unsigned int ckmax_r:8;
unsigned int ckmax_g:8;
unsigned int ckmax_b:8;
unsigned int res9:8;
/* Word 7(32-bit) in DDR memory */
unsigned int ckmin_r:8;
unsigned int ckmin_g:8;
unsigned int ckmin_b:8;
unsigned int res10:8;
/* Word 8(32-bit) in DDR memory */
unsigned int next_ad;
/* Word 9(32-bit) in DDR memory, just for 64-bit aligned */
unsigned int res1;
unsigned int res2;
unsigned int res3;
}__attribute__ ((packed));
/*
* DIU register map
*/
struct diu {
unsigned int desc[3];
unsigned int gamma;
unsigned int pallete;
unsigned int cursor;
unsigned int curs_pos;
unsigned int diu_mode;
unsigned int bgnd;
unsigned int bgnd_wb;
unsigned int disp_size;
unsigned int wb_size;
unsigned int wb_mem_addr;
unsigned int hsyn_para;
unsigned int vsyn_para;
unsigned int syn_pol;
unsigned int thresholds;
unsigned int int_status;
unsigned int int_mask;
unsigned int colorbar[8];
unsigned int filling;
unsigned int plut;
} __attribute__ ((packed));
struct diu_hw {
struct diu *diu_reg;
volatile unsigned int mode; /* DIU operation mode */
};
struct diu_addr {
unsigned char * paddr; /* Virtual address */
unsigned int offset;
};
#define FSL_DIU_BASE_OFFSET 0x2C000 /* Offset of Display Interface Unit */
/*
* Modes of operation of DIU
*/
#define MFB_MODE0 0 /* DIU off */
#define MFB_MODE1 1 /* All three planes output to display */
#define MFB_MODE2 2 /* Plane 1 to display,
* planes 2+3 written back to memory */
#define MFB_MODE3 3 /* All three planes written back to memory */
#define MFB_MODE4 4 /* Color bar generation */
#define MAX_CURS 32
static struct fb_info fsl_fb_info;
static struct diu_addr gamma, cursor;
static struct diu_ad fsl_diu_fb_ad __attribute__ ((aligned(32)));
static struct diu_ad dummy_ad __attribute__ ((aligned(32)));
static unsigned char *dummy_fb;
static struct diu_hw dr = {
.mode = MFB_MODE1,
};
int fb_enabled = 0;
int fb_initialized = 0;
const int default_xres = 1280;
const int default_pixel_format = 0x88882317;
static int map_video_memory(struct fb_info *info, unsigned long bytes_align);
static void enable_lcdc(void);
static void disable_lcdc(void);
static int fsl_diu_enable_panel(struct fb_info *info);
static int fsl_diu_disable_panel(struct fb_info *info);
static int allocate_buf(struct diu_addr *buf, u32 size, u32 bytes_align);
static u32 get_busfreq(void);
int fsl_diu_init(int xres,
unsigned int pixel_format,
int gamma_fix,
unsigned char *splash_bmp)
{
struct fb_videomode *fsl_diu_mode_db;
struct diu_ad *ad = &fsl_diu_fb_ad;
struct diu *hw;
struct fb_info *info = &fsl_fb_info;
struct fb_var_screeninfo *var = &info->var;
volatile immap_t *immap = (immap_t *)CFG_IMMR;
volatile ccsr_gur_t *gur = &immap->im_gur;
volatile unsigned int *guts_clkdvdr = &gur->clkdvdr;
unsigned char *gamma_table_base;
unsigned int i, j;
unsigned long speed_ccb, temp, pixval;
DPRINTF("Enter fsl_diu_init\n");
dr.diu_reg = (struct diu *) (CFG_IMMR + FSL_DIU_BASE_OFFSET);
hw = (struct diu *) dr.diu_reg;
disable_lcdc();
if (xres == 1280) {
fsl_diu_mode_db = &fsl_diu_mode_1280;
} else {
fsl_diu_mode_db = &fsl_diu_mode_1024;
}
if (0 == fb_initialized) {
allocate_buf(&gamma, 768, 32);
DPRINTF("gamma is allocated @ 0x%x\n",
(unsigned int)gamma.paddr);
allocate_buf(&cursor, MAX_CURS * MAX_CURS * 2, 32);
DPRINTF("curosr is allocated @ 0x%x\n",
(unsigned int)cursor.paddr);
/* create a dummy fb and dummy ad */
dummy_fb = malloc(64);
if (NULL == dummy_fb) {
printf("Cannot allocate dummy fb\n");
return -1;
}
dummy_ad.addr = cpu_to_le32((unsigned int)dummy_fb);
dummy_ad.pix_fmt = 0x88882317;
dummy_ad.src_size_g_alpha = 0x04400000; /* alpha = 0 */
dummy_ad.aoi_size = 0x02000400;
dummy_ad.offset_xyi = 0;
dummy_ad.offset_xyd = 0;
dummy_ad.next_ad = 0;
/* Memory allocation for framebuffer */
if (map_video_memory(info, 32)) {
printf("Unable to allocate fb memory 1\n");
return -1;
}
} else {
memset(info->screen_base, 0, info->smem_len);
}
dr.diu_reg->desc[0] = (unsigned int) &dummy_ad;
dr.diu_reg->desc[1] = (unsigned int) &dummy_ad;
dr.diu_reg->desc[2] = (unsigned int) &dummy_ad;
DPRINTF("dummy dr.diu_reg->desc[0] = 0x%x\n", dr.diu_reg->desc[0]);
DPRINTF("dummy desc[0] = 0x%x\n", hw->desc[0]);
/* read mode info */
var->xres = fsl_diu_mode_db->xres;
var->yres = fsl_diu_mode_db->yres;
var->bits_per_pixel = 32;
var->pixclock = fsl_diu_mode_db->pixclock;
var->left_margin = fsl_diu_mode_db->left_margin;
var->right_margin = fsl_diu_mode_db->right_margin;
var->upper_margin = fsl_diu_mode_db->upper_margin;
var->lower_margin = fsl_diu_mode_db->lower_margin;
var->hsync_len = fsl_diu_mode_db->hsync_len;
var->vsync_len = fsl_diu_mode_db->vsync_len;
var->sync = fsl_diu_mode_db->sync;
var->vmode = fsl_diu_mode_db->vmode;
info->line_length = var->xres * var->bits_per_pixel / 8;
info->logo_size = 0;
info->logo_height = 0;
ad->pix_fmt = pixel_format;
ad->addr = cpu_to_le32((unsigned int)info->screen_base);
ad->src_size_g_alpha
= cpu_to_le32((var->yres << 12) | var->xres);
/* fix me. AOI should not be greater than display size */
ad->aoi_size = cpu_to_le32(( var->yres << 16) | var->xres);
ad->offset_xyi = 0;
ad->offset_xyd = 0;
/* Disable chroma keying function */
ad->ckmax_r = 0;
ad->ckmax_g = 0;
ad->ckmax_b = 0;
ad->ckmin_r = 255;
ad->ckmin_g = 255;
ad->ckmin_b = 255;
gamma_table_base = gamma.paddr;
DPRINTF("gamma_table_base is allocated @ 0x%x\n",
(unsigned int)gamma_table_base);
/* Prep for DIU init - gamma table */
for (i = 0; i <= 2; i++)
for (j = 0; j <= 255; j++)
*gamma_table_base++ = j;
if (gamma_fix == 1) { /* fix the gamma */
DPRINTF("Fix gamma table\n");
gamma_table_base = gamma.paddr;
for (i = 0; i < 256*3; i++) {
gamma_table_base[i] = (gamma_table_base[i] << 2)
| ((gamma_table_base[i] >> 6) & 0x03);
}
}
DPRINTF("update-lcdc: HW - %p\n Disabling DIU\n", hw);
/* Program DIU registers */
hw->gamma = (unsigned int) gamma.paddr;
hw->cursor= (unsigned int) cursor.paddr;
hw->bgnd = 0x007F7F7F; /* BGND */
hw->bgnd_wb = 0; /* BGND_WB */
hw->disp_size = var->yres << 16 | var->xres; /* DISP SIZE */
hw->wb_size = 0; /* WB SIZE */
hw->wb_mem_addr = 0; /* WB MEM ADDR */
hw->hsyn_para = var->left_margin << 22 | /* BP_H */
var->hsync_len << 11 | /* PW_H */
var->right_margin; /* FP_H */
hw->vsyn_para = var->upper_margin << 22 | /* BP_V */
var->vsync_len << 11 | /* PW_V */
var->lower_margin; /* FP_V */
/* Pixel Clock configuration */
DPRINTF("DIU: Bus Frequency = %d\n", get_busfreq());
speed_ccb = get_busfreq();
DPRINTF("DIU pixclock in ps - %d\n", var->pixclock);
temp = 1;
temp *= 1000000000;
temp /= var->pixclock;
temp *= 1000;
pixval = speed_ccb / temp;
DPRINTF("DIU pixval = %lu\n", pixval);
hw->syn_pol = 0; /* SYNC SIGNALS POLARITY */
hw->thresholds = 0x00037800; /* The Thresholds */
hw->int_status = 0; /* INTERRUPT STATUS */
hw->int_mask = 0; /* INT MASK */
hw->plut = 0x01F5F666;
/* Modify PXCLK in GUTS CLKDVDR */
DPRINTF("DIU: Current value of CLKDVDR = 0x%08x\n", *guts_clkdvdr);
temp = *guts_clkdvdr & 0x2000FFFF;
*guts_clkdvdr = temp; /* turn off clock */
*guts_clkdvdr = temp | 0x80000000 | ((pixval & 0x1F) << 16);
DPRINTF("DIU: Modified value of CLKDVDR = 0x%08x\n", *guts_clkdvdr);
fb_initialized = 1;
if (splash_bmp) {
info->logo_height = fsl_diu_display_bmp(splash_bmp, 0, 0, 0);
info->logo_size = info->logo_height * info->line_length;
DPRINTF("logo height %d, logo_size 0x%x\n",
info->logo_height,info->logo_size);
}
/* Enable the DIU */
fsl_diu_enable_panel(info);
enable_lcdc();
return 0;
}
char *fsl_fb_open(struct fb_info **info)
{
*info = &fsl_fb_info;
return (char *) ((unsigned int)(*info)->screen_base
+ (*info)->logo_size);
}
void fsl_diu_close(void)
{
struct fb_info *info = &fsl_fb_info;
fsl_diu_disable_panel(info);
}
static int fsl_diu_enable_panel(struct fb_info *info)
{
struct diu *hw = dr.diu_reg;
struct diu_ad *ad = &fsl_diu_fb_ad;
DPRINTF("Entered: enable_panel\n");
if (hw->desc[0] != (unsigned int)ad)
hw->desc[0] = (unsigned int)ad;
DPRINTF("desc[0] = 0x%x\n", hw->desc[0]);
return 0;
}
static int fsl_diu_disable_panel(struct fb_info *info)
{
struct diu *hw = dr.diu_reg;
DPRINTF("Entered: disable_panel\n");
if (hw->desc[0] != (unsigned int)&dummy_ad)
hw->desc[0] = (unsigned int)&dummy_ad;
return 0;
}
static int map_video_memory(struct fb_info *info, unsigned long bytes_align)
{
unsigned long offset;
unsigned long mask;
DPRINTF("Entered: map_video_memory\n");
/* allocate maximum 1280*1024 with 32bpp */
info->smem_len = 1280 * 4 *1024 + bytes_align;
DPRINTF("MAP_VIDEO_MEMORY: smem_len = %d\n", info->smem_len);
info->screen_base = malloc(info->smem_len);
if (info->screen_base == NULL) {
printf("Unable to allocate fb memory\n");
return -1;
}
info->smem_start = (unsigned int) info->screen_base;
mask = bytes_align - 1;
offset = (unsigned long)info->screen_base & mask;
if (offset) {
info->screen_base += offset;
info->smem_len = info->smem_len - (bytes_align - offset);
} else
info->smem_len = info->smem_len - bytes_align;
info->screen_size = info->smem_len;
DPRINTF("Allocated fb @ 0x%08lx, size=%d.\n",
info->smem_start, info->smem_len);
return 0;
}
static void enable_lcdc(void)
{
struct diu *hw = dr.diu_reg;
DPRINTF("Entered: enable_lcdc, fb_enabled = %d\n", fb_enabled);
if (!fb_enabled) {
hw->diu_mode = dr.mode;
fb_enabled++;
}
DPRINTF("diu_mode = %d\n", hw->diu_mode);
}
static void disable_lcdc(void)
{
struct diu *hw = dr.diu_reg;
DPRINTF("Entered: disable_lcdc, fb_enabled = %d\n", fb_enabled);
if (fb_enabled) {
hw->diu_mode = 0;
fb_enabled = 0;
}
}
static u32 get_busfreq(void)
{
u32 fs_busfreq = 0;
fs_busfreq = get_bus_freq(0);
return fs_busfreq;
}
/*
* Align to 64-bit(8-byte), 32-byte, etc.
*/
static int allocate_buf(struct diu_addr *buf, u32 size, u32 bytes_align)
{
u32 offset, ssize;
u32 mask;
DPRINTF("Entered: allocate_buf\n");
ssize = size + bytes_align;
buf->paddr = malloc(ssize);
if (!buf->paddr)
return -1;
memset(buf->paddr, 0, ssize);
mask = bytes_align - 1;
offset = (u32)buf->paddr & mask;
if (offset) {
buf->offset = bytes_align - offset;
buf->paddr = (unsigned char *) ((u32)buf->paddr + offset);
} else
buf->offset = 0;
return 0;
}
int fsl_diu_display_bmp(unsigned char *bmp,
int xoffset,
int yoffset,
int transpar)
{
struct fb_info *info = &fsl_fb_info;
unsigned char r, g, b;
unsigned int *fb_t, val;
unsigned char *bitmap;
unsigned int palette[256];
int width, height, bpp, ncolors, raster, offset, x, y, i, k, cpp;
if (!bmp) {
printf("Must supply a bitmap address\n");
return 0;
}
raster = bmp[10] + (bmp[11] << 8) + (bmp[12] << 16) + (bmp[13] << 24);
width = (bmp[21] << 24) | (bmp[20] << 16) | (bmp[19] << 8) | bmp[18];
height = (bmp[25] << 24) | (bmp[24] << 16) | (bmp[23] << 8) | bmp[22];
bpp = (bmp[29] << 8) | (bmp[28]);
ncolors = bmp[46] + (bmp[47] << 8) + (bmp[48] << 16) + (bmp[49] << 24);
bitmap = bmp + raster;
cpp = info->var.bits_per_pixel / 8;
DPRINTF("bmp = 0x%08x\n", (unsigned int)bmp);
DPRINTF("bitmap = 0x%08x\n", (unsigned int)bitmap);
DPRINTF("width = %d\n", width);
DPRINTF("height = %d\n", height);
DPRINTF("bpp = %d\n", bpp);
DPRINTF("ncolors = %d\n", ncolors);
DPRINTF("xres = %d\n", info->var.xres);
DPRINTF("yres = %d\n", info->var.yres);
DPRINTF("Screen_base = 0x%x\n", (unsigned int)info->screen_base);
if (((width+xoffset) > info->var.xres) ||
((height+yoffset) > info->var.yres)) {
printf("bitmap is out of range, image too large or too much offset\n");
return 0;
}
if (bpp < 24) {
for (i = 0, offset = 54; i < ncolors; i++, offset += 4)
palette[i] = (bmp[offset+2] << 16)
+ (bmp[offset+1] << 8) + bmp[offset];
}
switch (bpp) {
case 1:
for (y = height - 1; y >= 0; y--) {
fb_t = (unsigned int *) ((unsigned int)info->screen_base + (((y+yoffset) * info->var.xres) + xoffset)*cpp);