ls102xa: dcu: Add platform support for DCU on LS1021AQDS board
This patch adds the CH7301 HDMI options and the common configuration
for DCU on LS1021AQDS board.
Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com>
Signed-off-by: Alison Wang <alison.wang@freescale.com>
Cc: Jason Jin <Jason.Jin@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
diff --git a/board/freescale/ls1021aqds/dcu.c b/board/freescale/ls1021aqds/dcu.c
new file mode 100644
index 0000000..90f5bc0
--- /dev/null
+++ b/board/freescale/ls1021aqds/dcu.c
@@ -0,0 +1,92 @@
+/*
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ *
+ * FSL DCU Framebuffer driver
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <asm/io.h>
+#include <common.h>
+#include <fsl_dcu_fb.h>
+#include <i2c.h>
+#include "div64.h"
+#include "../common/diu_ch7301.h"
+#include "ls1021aqds_qixis.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static int select_i2c_ch_pca9547(u8 ch)
+{
+ int ret;
+
+ ret = i2c_write(I2C_MUX_PCA_ADDR_PRI, 0, 1, &ch, 1);
+ if (ret) {
+ puts("PCA: failed to select proper channel\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+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(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 */
+ 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);
+ 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;
+
+ i2c_set_bus_num(CONFIG_SYS_I2C_DVI_BUS_NUM);
+ select_i2c_ch_pca9547(I2C_MUX_CH_CH7301);
+ diu_set_dvi_encoder(pixval);
+ select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT);
+ } else {
+ return 0;
+ }
+
+ printf("DCU: Switching to %s monitor @ %ux%u\n", name, xres, yres);
+
+ pixel_format = 32;
+ fsl_dcu_init(xres, yres, pixel_format);
+
+ return 0;
+}