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/*
* Copyright 2007, 2010-2011 Freescale Semiconductor, Inc.
* Authors: York Sun <yorksun@freescale.com>
* Timur Tabi <timur@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 <malloc.h>
#include <asm/io.h>
#include "videomodes.h"
#include <video_fb.h>
#include <fsl_diu_fb.h>
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 int smem_len; /* Length of frame buffer mem */
unsigned int type; /* see FB_TYPE_* */
unsigned int line_length; /* length of a line in bytes */
void *screen_base;
unsigned long screen_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 */
/* This setting is used for the ifm pdm360ng with PRIMEVIEW PM070WL3 */
static struct fb_videomode fsl_diu_mode_800 = {
.name = "800x600-60",
.refresh = 60,
.xres = 800,
.yres = 480,
.pixclock = 31250,
.left_margin = 86,
.right_margin = 42,
.upper_margin = 33,
.lower_margin = 10,
.hsync_len = 128,
.vsync_len = 2,
.sync = 0,
.vmode = FB_VMODE_NONINTERLACED
};
/*
* 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 = {
.name = "1024x768-60",
.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 */
__le32 pix_fmt; /* hard coding pixel format */
/* Word 1(32-bit) in DDR memory */
__le32 addr;
/* Word 2(32-bit) in DDR memory */
__le32 src_size_g_alpha;
/* Word 3(32-bit) in DDR memory */
__le32 aoi_size;
/* Word 4(32-bit) in DDR memory */
__le32 offset_xyi;
/* Word 5(32-bit) in DDR memory */
__le32 offset_xyd;
/* Word 6(32-bit) in DDR memory */
__le32 ckmax_r:8;
__le32 ckmax_g:8;
__le32 ckmax_b:8;
__le32 res9:8;
/* Word 7(32-bit) in DDR memory */
__le32 ckmin_r:8;
__le32 ckmin_g:8;
__le32 ckmin_b:8;
__le32 res10:8;
/* Word 8(32-bit) in DDR memory */
__le32 next_ad;
/* Word 9(32-bit) in DDR memory, just for 64-bit aligned */
__le32 res[3];
} __attribute__ ((packed));
/*
* DIU register map
*/
struct diu {
__be32 desc[3];
__be32 gamma;
__be32 pallete;
__be32 cursor;
__be32 curs_pos;
__be32 diu_mode;
__be32 bgnd;
__be32 bgnd_wb;
__be32 disp_size;
__be32 wb_size;
__be32 wb_mem_addr;
__be32 hsyn_para;
__be32 vsyn_para;
__be32 syn_pol;
__be32 thresholds;
__be32 int_status;
__be32 int_mask;
__be32 colorbar[8];
__be32 filling;
__be32 plut;
} __attribute__ ((packed));
struct diu_addr {
void *vaddr; /* Virtual address */
u32 paddr; /* 32-bit physical address */
unsigned int offset; /* Alignment offset */
};
static struct fb_info info;
/*
* 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;
ssize = size + bytes_align;
buf->vaddr = malloc(ssize);
if (!buf->vaddr)
return -1;
memset(buf->vaddr, 0, ssize);
mask = bytes_align - 1;
offset = (u32)buf->vaddr & mask;
if (offset) {
buf->offset = bytes_align - offset;
buf->vaddr += offset;
} else
buf->offset = 0;
buf->paddr = virt_to_phys(buf->vaddr);
return 0;
}
/*
* Allocate a framebuffer and an Area Descriptor that points to it. Both
* are created in the same memory block. The Area Descriptor is updated to
* point to the framebuffer memory. Memory is aligned as needed.
*/
static struct diu_ad *allocate_fb(unsigned int xres, unsigned int yres,
unsigned int depth, void **fb)
{
unsigned long size = xres * yres * depth;
struct diu_addr addr;
struct diu_ad *ad;
size_t ad_size = roundup(sizeof(struct diu_ad), 32);
/*
* Allocate a memory block that holds the Area Descriptor and the
* frame buffer right behind it. To keep the code simple, everything
* is aligned on a 32-byte address.
*/
if (allocate_buf(&addr, ad_size + size, 32) < 0)
return NULL;
ad = addr.vaddr;
ad->addr = cpu_to_le32(addr.paddr + ad_size);
ad->aoi_size = cpu_to_le32((yres << 16) | xres);
ad->src_size_g_alpha = cpu_to_le32((yres << 12) | xres);
ad->offset_xyi = 0;
ad->offset_xyd = 0;
if (fb)
*fb = addr.vaddr + ad_size;
return ad;
}
int fsl_diu_init(int xres, u32 pixel_format, int gamma_fix)
{
struct fb_videomode *fsl_diu_mode_db;
struct diu_ad *ad;
struct diu *hw = (struct diu *)CONFIG_SYS_DIU_ADDR;
u8 *gamma_table_base;
unsigned int i, j;
struct diu_ad *dummy_ad;
struct diu_addr gamma;
struct diu_addr cursor;
switch (xres) {
case 800:
fsl_diu_mode_db = &fsl_diu_mode_800;
break;
case 1280:
fsl_diu_mode_db = &fsl_diu_mode_1280;
break;
default:
fsl_diu_mode_db = &fsl_diu_mode_1024;
}
/* The AD struct for the dummy framebuffer and the FB itself */
dummy_ad = allocate_fb(2, 4, 4, NULL);
if (!dummy_ad) {
printf("DIU: Out of memory\n");
return -1;
}
dummy_ad->pix_fmt = 0x88883316;
/* read mode info */
info.var.xres = fsl_diu_mode_db->xres;
info.var.yres = fsl_diu_mode_db->yres;
info.var.bits_per_pixel = 32;
info.var.pixclock = fsl_diu_mode_db->pixclock;
info.var.left_margin = fsl_diu_mode_db->left_margin;
info.var.right_margin = fsl_diu_mode_db->right_margin;
info.var.upper_margin = fsl_diu_mode_db->upper_margin;
info.var.lower_margin = fsl_diu_mode_db->lower_margin;
info.var.hsync_len = fsl_diu_mode_db->hsync_len;
info.var.vsync_len = fsl_diu_mode_db->vsync_len;
info.var.sync = fsl_diu_mode_db->sync;
info.var.vmode = fsl_diu_mode_db->vmode;
info.line_length = info.var.xres * info.var.bits_per_pixel / 8;
/* Memory allocation for framebuffer */
info.smem_len =
info.var.xres * info.var.yres * (info.var.bits_per_pixel / 8);
ad = allocate_fb(info.var.xres, info.var.yres,
info.var.bits_per_pixel / 8, &info.screen_base);
if (!ad) {
printf("DIU: Out of memory\n");
return -1;
}
ad->pix_fmt = pixel_format;
/* 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;
/* Initialize the gamma table */
if (allocate_buf(&gamma, 256 * 3, 32) < 0) {
printf("DIU: Out of memory\n");
return -1;
}
gamma_table_base = gamma.vaddr;
for (i = 0; i <= 2; i++)
for (j = 0; j < 256; j++)
*gamma_table_base++ = j;
if (gamma_fix == 1) { /* fix the gamma */
gamma_table_base = gamma.vaddr;
for (i = 0; i < 256 * 3; i++) {
gamma_table_base[i] = (gamma_table_base[i] << 2)
| ((gamma_table_base[i] >> 6) & 0x03);
}
}
/* Initialize the cursor */
if (allocate_buf(&cursor, 32 * 32 * 2, 32) < 0) {
printf("DIU: Can't alloc cursor data\n");
return -1;
}
/* Program DIU registers */
out_be32(&hw->diu_mode, 0); /* Temporarily disable the DIU */
out_be32(&hw->gamma, gamma.paddr);
out_be32(&hw->cursor, cursor.paddr);
out_be32(&hw->bgnd, 0x007F7F7F);
out_be32(&hw->bgnd_wb, 0);
out_be32(&hw->disp_size, info.var.yres << 16 | info.var.xres);
out_be32(&hw->wb_size, 0);
out_be32(&hw->wb_mem_addr, 0);
out_be32(&hw->hsyn_para, info.var.left_margin << 22 |
info.var.hsync_len << 11 |
info.var.right_margin);
out_be32(&hw->vsyn_para, info.var.upper_margin << 22 |
info.var.vsync_len << 11 |
info.var.lower_margin);
out_be32(&hw->syn_pol, 0);
out_be32(&hw->thresholds, 0x00037800);
out_be32(&hw->int_status, 0);
out_be32(&hw->int_mask, 0);
out_be32(&hw->plut, 0x01F5F666);
/* Pixel Clock configuration */
diu_set_pixel_clock(info.var.pixclock);
/* Set the frame buffers */
out_be32(&hw->desc[0], virt_to_phys(ad));
out_be32(&hw->desc[1], virt_to_phys(dummy_ad));
out_be32(&hw->desc[2], virt_to_phys(dummy_ad));
/* Enable the DIU, set display to all three planes */
out_be32(&hw->diu_mode, 1);
return 0;
}
void *video_hw_init(void)
{
static GraphicDevice ctfb;
const char *options;
unsigned int depth = 0, freq = 0;
if (!video_get_video_mode(&ctfb.winSizeX, &ctfb.winSizeY, &depth, &freq,
&options))
return NULL;
/* Find the monitor port, which is a required option */
if (!options)
return NULL;
if (strncmp(options, "monitor=", 8) != 0)
return NULL;
if (platform_diu_init(ctfb.winSizeX, ctfb.winSizeY, options + 8) < 0)
return NULL;
/* fill in Graphic device struct */
sprintf(ctfb.modeIdent, "%ix%ix%i %ikHz %iHz",
ctfb.winSizeX, ctfb.winSizeY, depth, 64, freq);
ctfb.frameAdrs = (unsigned int)info.screen_base;
ctfb.plnSizeX = ctfb.winSizeX;
ctfb.plnSizeY = ctfb.winSizeY;
ctfb.gdfBytesPP = 4;
ctfb.gdfIndex = GDF_32BIT_X888RGB;
ctfb.isaBase = 0;
ctfb.pciBase = 0;
ctfb.memSize = info.screen_size;
/* Cursor Start Address */
ctfb.dprBase = 0;
ctfb.vprBase = 0;
ctfb.cprBase = 0;
return &ctfb;
}