mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-26 13:03:40 +00:00
9b5eeb4572
Updates the board configuration to enable use of the PCA9547 I2C mux. Signed-off-by: Stephen Carlson <stcarlso@linux.microsoft.com> Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
110 lines
2.4 KiB
C
110 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright 2014 Freescale Semiconductor, Inc.
|
|
* Copyright 2019 NXP
|
|
*
|
|
* FSL DCU Framebuffer driver
|
|
*/
|
|
|
|
#include <asm/global_data.h>
|
|
#include <asm/io.h>
|
|
#include <common.h>
|
|
#include <fsl_dcu_fb.h>
|
|
#include <i2c.h>
|
|
#include "../common/i2c_mux.h"
|
|
#include "div64.h"
|
|
#include "../common/diu_ch7301.h"
|
|
#include "ls1021aqds_qixis.h"
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
unsigned int dcu_set_pixel_clock(unsigned int pixclock)
|
|
{
|
|
unsigned long long div;
|
|
|
|
div = (unsigned long long)(gd->bus_clk / 1000);
|
|
div *= (unsigned long long)pixclock;
|
|
do_div(div, 1000000000);
|
|
|
|
return div;
|
|
}
|
|
|
|
int platform_dcu_init(struct fb_info *fbinfo,
|
|
unsigned int xres,
|
|
unsigned int yres,
|
|
const char *port,
|
|
struct fb_videomode *dcu_fb_videomode)
|
|
{
|
|
const char *name;
|
|
unsigned int pixel_format;
|
|
int ret;
|
|
u8 ch;
|
|
|
|
/* Mux I2C3+I2C4 as HSYNC+VSYNC */
|
|
#if CONFIG_IS_ENABLED(DM_I2C)
|
|
struct udevice *dev;
|
|
|
|
/* QIXIS device mount on I2C1 bus*/
|
|
ret = i2c_get_chip_for_busnum(0, CONFIG_SYS_I2C_QIXIS_ADDR,
|
|
1, &dev);
|
|
if (ret) {
|
|
printf("%s: Cannot find udev for a bus %d\n", __func__,
|
|
0);
|
|
return ret;
|
|
}
|
|
ret = dm_i2c_read(dev, QIXIS_DCU_BRDCFG5, &ch, 1);
|
|
if (ret) {
|
|
printf("Error: failed to read I2C @%02x\n",
|
|
CONFIG_SYS_I2C_QIXIS_ADDR);
|
|
return ret;
|
|
}
|
|
ch &= 0x1F;
|
|
ch |= 0xA0;
|
|
ret = dm_i2c_write(dev, QIXIS_DCU_BRDCFG5, &ch, 1);
|
|
|
|
#else
|
|
ret = i2c_read(CONFIG_SYS_I2C_QIXIS_ADDR, QIXIS_DCU_BRDCFG5,
|
|
1, &ch, 1);
|
|
if (ret) {
|
|
printf("Error: failed to read I2C @%02x\n",
|
|
CONFIG_SYS_I2C_QIXIS_ADDR);
|
|
return ret;
|
|
}
|
|
ch &= 0x1F;
|
|
ch |= 0xA0;
|
|
ret = i2c_write(CONFIG_SYS_I2C_QIXIS_ADDR, QIXIS_DCU_BRDCFG5,
|
|
1, &ch, 1);
|
|
#endif
|
|
if (ret) {
|
|
printf("Error: failed to write I2C @%02x\n",
|
|
CONFIG_SYS_I2C_QIXIS_ADDR);
|
|
return ret;
|
|
}
|
|
|
|
if (strncmp(port, "hdmi", 4) == 0) {
|
|
unsigned long pixval;
|
|
|
|
name = "HDMI";
|
|
|
|
pixval = 1000000000 / dcu_fb_videomode->pixclock;
|
|
pixval *= 1000;
|
|
|
|
#if !CONFIG_IS_ENABLED(DM_I2C)
|
|
i2c_set_bus_num(CONFIG_SYS_I2C_DVI_BUS_NUM);
|
|
#endif
|
|
select_i2c_ch_pca9547(I2C_MUX_CH_CH7301,
|
|
CONFIG_SYS_I2C_DVI_BUS_NUM);
|
|
diu_set_dvi_encoder(pixval);
|
|
select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT,
|
|
CONFIG_SYS_I2C_DVI_BUS_NUM);
|
|
} else {
|
|
return 0;
|
|
}
|
|
|
|
printf("DCU: Switching to %s monitor @ %ux%u\n", name, xres, yres);
|
|
|
|
pixel_format = 32;
|
|
fsl_dcu_init(fbinfo, xres, yres, pixel_format);
|
|
|
|
return 0;
|
|
}
|