mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-24 21:54:01 +00:00
1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
71 lines
1.9 KiB
C
71 lines
1.9 KiB
C
/*
|
|
* Copyright 2007-2011 Freescale Semiconductor, Inc.
|
|
* Authors: York Sun <yorksun@freescale.com>
|
|
* Timur Tabi <timur@freescale.com>
|
|
*
|
|
* FSL DIU Framebuffer driver
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <asm/io.h>
|
|
#include <fsl_diu_fb.h>
|
|
#include "../common/pixis.h"
|
|
|
|
#define PX_BRDCFG0_DLINK 0x10
|
|
#define PX_BRDCFG0_DVISEL 0x08
|
|
|
|
void diu_set_pixel_clock(unsigned int pixclock)
|
|
{
|
|
volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
|
|
volatile ccsr_gur_t *gur = &immap->im_gur;
|
|
volatile unsigned int *guts_clkdvdr = &gur->clkdvdr;
|
|
unsigned long speed_ccb, temp, pixval;
|
|
|
|
speed_ccb = get_bus_freq(0);
|
|
temp = 1000000000/pixclock;
|
|
temp *= 1000;
|
|
pixval = speed_ccb / temp;
|
|
debug("DIU pixval = %lu\n", pixval);
|
|
|
|
/* Modify PXCLK in GUTS CLKDVDR */
|
|
debug("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);
|
|
debug("DIU: Modified value of CLKDVDR = 0x%08x\n", *guts_clkdvdr);
|
|
}
|
|
|
|
int platform_diu_init(unsigned int xres, unsigned int yres, const char *port)
|
|
{
|
|
const char *name;
|
|
int gamma_fix = 0;
|
|
u32 pixel_format = 0x88883316;
|
|
u8 temp;
|
|
|
|
temp = in_8(&pixis->brdcfg0);
|
|
|
|
if (strncmp(port, "dlvds", 5) == 0) {
|
|
/* Dual link LVDS */
|
|
gamma_fix = 1;
|
|
temp &= ~(PX_BRDCFG0_DLINK | PX_BRDCFG0_DVISEL);
|
|
name = "Dual-Link LVDS";
|
|
} else if (strncmp(port, "lvds", 4) == 0) {
|
|
/* Single link LVDS */
|
|
temp = (temp & ~PX_BRDCFG0_DVISEL) | PX_BRDCFG0_DLINK;
|
|
name = "Single-Link LVDS";
|
|
} else {
|
|
/* DVI */
|
|
if (in_8(&pixis->ver) == 1) /* Board version */
|
|
pixel_format = 0x88882317;
|
|
temp |= PX_BRDCFG0_DVISEL;
|
|
name = "DVI";
|
|
}
|
|
|
|
printf("DIU: Switching to %s monitor @ %ux%u\n", name, xres, yres);
|
|
out_8(&pixis->brdcfg0, temp);
|
|
|
|
return fsl_diu_init(xres, yres, pixel_format, gamma_fix);
|
|
}
|