mirror of
https://github.com/brain-hackers/u-boot-brain
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
71 lines
1.9 KiB
C
71 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2007-2011 Freescale Semiconductor, Inc.
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* Authors: York Sun <yorksun@freescale.com>
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* Timur Tabi <timur@freescale.com>
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*
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* FSL DIU Framebuffer driver
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*/
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#include <common.h>
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#include <command.h>
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#include <asm/io.h>
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#include <fsl_diu_fb.h>
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#include "../common/pixis.h"
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#define PX_BRDCFG0_DLINK 0x10
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#define PX_BRDCFG0_DVISEL 0x08
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void diu_set_pixel_clock(unsigned int pixclock)
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{
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volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
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volatile ccsr_gur_t *gur = &immap->im_gur;
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volatile unsigned int *guts_clkdvdr = &gur->clkdvdr;
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unsigned long speed_ccb, temp, pixval;
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speed_ccb = get_bus_freq(0);
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temp = 1000000000/pixclock;
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temp *= 1000;
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pixval = speed_ccb / temp;
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debug("DIU pixval = %lu\n", pixval);
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/* Modify PXCLK in GUTS CLKDVDR */
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debug("DIU: Current value of CLKDVDR = 0x%08x\n", *guts_clkdvdr);
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temp = *guts_clkdvdr & 0x2000FFFF;
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*guts_clkdvdr = temp; /* turn off clock */
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*guts_clkdvdr = temp | 0x80000000 | ((pixval & 0x1F) << 16);
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debug("DIU: Modified value of CLKDVDR = 0x%08x\n", *guts_clkdvdr);
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}
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int platform_diu_init(unsigned int xres, unsigned int yres, const char *port)
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{
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const char *name;
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int gamma_fix = 0;
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u32 pixel_format = 0x88883316;
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u8 temp;
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temp = in_8(&pixis->brdcfg0);
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if (strncmp(port, "dlvds", 5) == 0) {
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/* Dual link LVDS */
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gamma_fix = 1;
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temp &= ~(PX_BRDCFG0_DLINK | PX_BRDCFG0_DVISEL);
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name = "Dual-Link LVDS";
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} else if (strncmp(port, "lvds", 4) == 0) {
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/* Single link LVDS */
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temp = (temp & ~PX_BRDCFG0_DVISEL) | PX_BRDCFG0_DLINK;
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name = "Single-Link LVDS";
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} else {
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/* DVI */
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if (in_8(&pixis->ver) == 1) /* Board version */
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pixel_format = 0x88882317;
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temp |= PX_BRDCFG0_DVISEL;
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name = "DVI";
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}
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printf("DIU: Switching to %s monitor @ %ux%u\n", name, xres, yres);
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out_8(&pixis->brdcfg0, temp);
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return fsl_diu_init(xres, yres, pixel_format, gamma_fix);
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}
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