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[karo-tx-uboot.git] / board / freescale / ls1021atwr / dcu.c
1 /*
2  * Copyright 2014 Freescale Semiconductor, Inc.
3  *
4  * FSL DCU Framebuffer driver
5  *
6  * SPDX-License-Identifier:     GPL-2.0+
7  */
8
9 #include <common.h>
10 #include <fsl_dcu_fb.h>
11 #include "div64.h"
12 #include "../common/dcu_sii9022a.h"
13
14 DECLARE_GLOBAL_DATA_PTR;
15
16 unsigned int dcu_set_pixel_clock(unsigned int pixclock)
17 {
18         unsigned long long div;
19
20         div = (unsigned long long)(gd->bus_clk / 1000);
21         div *= (unsigned long long)pixclock;
22         do_div(div, 1000000000);
23
24         return div;
25 }
26
27 int platform_dcu_init(unsigned int xres, unsigned int yres,
28                       const char *port,
29                       struct fb_videomode *dcu_fb_videomode)
30 {
31         const char *name;
32         unsigned int pixel_format;
33
34         if (strncmp(port, "twr_lcd", 4) == 0) {
35                 name = "TWR_LCD_RGB card";
36         } else {
37                 name = "HDMI";
38                 dcu_set_dvi_encoder(dcu_fb_videomode);
39         }
40
41         printf("DCU: Switching to %s monitor @ %ux%u\n", name, xres, yres);
42
43         pixel_format = 32;
44         fsl_dcu_init(xres, yres, pixel_format);
45
46         return 0;
47 }