diff options
Diffstat (limited to 'u-boot/board/freescale/mpc8610hpcd/mpc8610hpcd_diu.c')
| -rw-r--r-- | u-boot/board/freescale/mpc8610hpcd/mpc8610hpcd_diu.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/u-boot/board/freescale/mpc8610hpcd/mpc8610hpcd_diu.c b/u-boot/board/freescale/mpc8610hpcd/mpc8610hpcd_diu.c new file mode 100644 index 0000000..81e53e7 --- /dev/null +++ b/u-boot/board/freescale/mpc8610hpcd/mpc8610hpcd_diu.c @@ -0,0 +1,98 @@ +/* + * 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 <command.h> +#include <asm/io.h> +#include <fsl_diu_fb.h> + +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) +{ + char *monitor_port; + int gamma_fix; + unsigned int pixel_format; + unsigned char tmp_val; + unsigned char pixis_arch; + u8 *pixis_base = (u8 *)PIXIS_BASE; + + tmp_val = in_8(pixis_base + PIXIS_BRDCFG0); + pixis_arch = in_8(pixis_base + PIXIS_VER); + + monitor_port = getenv("monitor"); + if (!strncmp(monitor_port, "0", 1)) { /* 0 - DVI */ + *xres = 1280; + *yres = 1024; + if (pixis_arch == 0x01) + pixel_format = 0x88882317; + else + pixel_format = 0x88883316; + gamma_fix = 0; + out_8(pixis_base + PIXIS_BRDCFG0, tmp_val | 0x08); + + } else if (!strncmp(monitor_port, "1", 1)) { /* 1 - Single link LVDS */ + *xres = 1024; + *yres = 768; + pixel_format = 0x88883316; + gamma_fix = 0; + out_8(pixis_base + PIXIS_BRDCFG0, (tmp_val & 0xf7) | 0x10); + + } else if (!strncmp(monitor_port, "2", 1)) { /* 2 - Double link LVDS */ + *xres = 1280; + *yres = 1024; + pixel_format = 0x88883316; + gamma_fix = 1; + out_8(pixis_base + PIXIS_BRDCFG0, tmp_val & 0xe7); + + } else { /* DVI */ + *xres = 1280; + *yres = 1024; + pixel_format = 0x88882317; + gamma_fix = 0; + out_8(pixis_base + PIXIS_BRDCFG0, tmp_val | 0x08); + } + + return fsl_diu_init(*xres, pixel_format, gamma_fix); +} |