board/freescale/ls1021aiot/dcu.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright 2016 Freescale Semiconductor, Inc.
   4  *
   5  * FSL DCU Framebuffer driver
   6  */
   7
   8 #include <common.h>
   9 #include <fsl_dcu_fb.h>
  10 #include "div64.h"
  11 #include "../common/dcu_sii9022a.h"
  12
  13 DECLARE_GLOBAL_DATA_PTR;
  14
  15 unsigned int dcu_set_pixel_clock(unsigned int pixclock)
  16 {
  17         unsigned long long div;
  18
  19         div = (unsigned long long)(gd->bus_clk / 1000);
  20         div *= (unsigned long long)pixclock;
  21         do_div(div, 1000000000);
  22
  23         return div;
  24 }
  25
  26 int platform_dcu_init(struct fb_info *fbinfo,
  27                       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(fbinfo, xres, yres, pixel_format);
  45
  46         return 0;
  47 }