2 * Copyright 2014 Freescale Semiconductor, Inc.
4 * FSL DCU Framebuffer driver
6 * SPDX-License-Identifier: GPL-2.0+
11 #include <fsl_dcu_fb.h>
14 #include "../common/diu_ch7301.h"
15 #include "ls1021aqds_qixis.h"
17 DECLARE_GLOBAL_DATA_PTR;
19 static int select_i2c_ch_pca9547(u8 ch)
23 ret = i2c_write(I2C_MUX_PCA_ADDR_PRI, 0, 1, &ch, 1);
25 puts("PCA: failed to select proper channel\n");
32 unsigned int dcu_set_pixel_clock(unsigned int pixclock)
34 unsigned long long div;
36 div = (unsigned long long)(gd->bus_clk / 1000);
37 div *= (unsigned long long)pixclock;
38 do_div(div, 1000000000);
43 int platform_dcu_init(unsigned int xres, unsigned int yres,
45 struct fb_videomode *dcu_fb_videomode)
48 unsigned int pixel_format;
52 /* Mux I2C3+I2C4 as HSYNC+VSYNC */
53 ret = i2c_read(CONFIG_SYS_I2C_QIXIS_ADDR, QIXIS_DCU_BRDCFG5,
56 printf("Error: failed to read I2C @%02x\n",
57 CONFIG_SYS_I2C_QIXIS_ADDR);
62 ret = i2c_write(CONFIG_SYS_I2C_QIXIS_ADDR, QIXIS_DCU_BRDCFG5,
65 printf("Error: failed to write I2C @%02x\n",
66 CONFIG_SYS_I2C_QIXIS_ADDR);
70 if (strncmp(port, "hdmi", 4) == 0) {
75 pixval = 1000000000 / dcu_fb_videomode->pixclock;
78 i2c_set_bus_num(CONFIG_SYS_I2C_DVI_BUS_NUM);
79 select_i2c_ch_pca9547(I2C_MUX_CH_CH7301);
80 diu_set_dvi_encoder(pixval);
81 select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT);
86 printf("DCU: Switching to %s monitor @ %ux%u\n", name, xres, yres);
89 fsl_dcu_init(xres, yres, pixel_format);