fsl/diu: ch7301 encoder split off from t1040qds/diu.c

The ch7301 encoder not only used in t1040qds platform, so we split
it for t1042rdb and LSx platform.

Signed-off-by: Wang Dongsheng <dongsheng.wang@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>

3 files changed, 151 insertions, 0 deletions

diff --git a/board/freescale/common/Makefile b/board/freescale/common/Makefile
index 22b57cc..50d7731 100644
--- a/board/freescale/common/Makefile
+++ b/board/freescale/common/Makefile
@@ -34,6 +34,8 @@ ifndef CONFIG_RAMBOOT_PBL
 obj-$(CONFIG_FSL_FIXED_MMC_LOCATION)	+= sdhc_boot.o
 endif
 
+obj-$(CONFIG_FSL_DIU_CH7301)	+= diu_ch7301.o
+
 obj-$(CONFIG_MPC8541CDS)	+= cds_pci_ft.o
 obj-$(CONFIG_MPC8548CDS)	+= cds_pci_ft.o
 obj-$(CONFIG_MPC8555CDS)	+= cds_pci_ft.o
diff --git a/board/freescale/common/diu_ch7301.c b/board/freescale/common/diu_ch7301.c
new file mode 100644
index 0000000..82ce870
--- /dev/null
+++ b/board/freescale/common/diu_ch7301.c
@@ -0,0 +1,136 @@
+/*
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ * Authors: Priyanka Jain <Priyanka.Jain@freescale.com>
+ *	    Wang Dongsheng <dongsheng.wang@freescale.com>
+ *
+ * This file is copied and modified from the original t1040qds/diu.c.
+ * Encoder can be used in T104x and LSx Platform.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <stdio_dev.h>
+#include <i2c.h>
+
+#define I2C_DVI_INPUT_DATA_FORMAT_REG		0x1F
+#define I2C_DVI_PLL_CHARGE_CNTL_REG		0x33
+#define I2C_DVI_PLL_DIVIDER_REG			0x34
+#define I2C_DVI_PLL_SUPPLY_CNTL_REG		0x35
+#define I2C_DVI_PLL_FILTER_REG			0x36
+#define I2C_DVI_TEST_PATTERN_REG		0x48
+#define I2C_DVI_POWER_MGMT_REG			0x49
+#define I2C_DVI_LOCK_STATE_REG			0x4D
+#define I2C_DVI_SYNC_POLARITY_REG		0x56
+
+/*
+ * Set VSYNC/HSYNC to active high. This is polarity of sync signals
+ * from DIU->DVI. The DIU default is active igh, so DVI is set to
+ * active high.
+ */
+#define I2C_DVI_INPUT_DATA_FORMAT_VAL		0x98
+
+#define I2C_DVI_PLL_CHARGE_CNTL_HIGH_SPEED_VAL	0x06
+#define I2C_DVI_PLL_DIVIDER_HIGH_SPEED_VAL	0x26
+#define I2C_DVI_PLL_FILTER_HIGH_SPEED_VAL	0xA0
+#define I2C_DVI_PLL_CHARGE_CNTL_LOW_SPEED_VAL	0x08
+#define I2C_DVI_PLL_DIVIDER_LOW_SPEED_VAL	0x16
+#define I2C_DVI_PLL_FILTER_LOW_SPEED_VAL	0x60
+
+/* Clear test pattern */
+#define I2C_DVI_TEST_PATTERN_VAL		0x18
+/* Exit Power-down mode */
+#define I2C_DVI_POWER_MGMT_VAL			0xC0
+
+/* Monitor polarity is handled via DVI Sync Polarity Register */
+#define I2C_DVI_SYNC_POLARITY_VAL		0x00
+
+/* Programming of HDMI Chrontel CH7301 connector */
+int diu_set_dvi_encoder(unsigned int pixclock)
+{
+	int ret;
+	u8 temp;
+
+	temp = I2C_DVI_TEST_PATTERN_VAL;
+	ret = i2c_write(CONFIG_SYS_I2C_DVI_ADDR, I2C_DVI_TEST_PATTERN_REG, 1,
+			&temp, 1);
+	if (ret) {
+		puts("I2C: failed to select proper dvi test pattern\n");
+		return ret;
+	}
+	temp = I2C_DVI_INPUT_DATA_FORMAT_VAL;
+	ret = i2c_write(CONFIG_SYS_I2C_DVI_ADDR, I2C_DVI_INPUT_DATA_FORMAT_REG,
+			1, &temp, 1);
+	if (ret) {
+		puts("I2C: failed to select dvi input data format\n");
+		return ret;
+	}
+
+	/* Set Sync polarity register */
+	temp = I2C_DVI_SYNC_POLARITY_VAL;
+	ret = i2c_write(CONFIG_SYS_I2C_DVI_ADDR, I2C_DVI_SYNC_POLARITY_REG, 1,
+			&temp, 1);
+	if (ret) {
+		puts("I2C: failed to select dvi syc polarity\n");
+		return ret;
+	}
+
+	/* Set PLL registers based on pixel clock rate*/
+	if (pixclock > 65000000) {
+		temp = I2C_DVI_PLL_CHARGE_CNTL_HIGH_SPEED_VAL;
+		ret = i2c_write(CONFIG_SYS_I2C_DVI_ADDR,
+				I2C_DVI_PLL_CHARGE_CNTL_REG, 1,	&temp, 1);
+		if (ret) {
+			puts("I2C: failed to select dvi pll charge_cntl\n");
+			return ret;
+		}
+		temp = I2C_DVI_PLL_DIVIDER_HIGH_SPEED_VAL;
+		ret = i2c_write(CONFIG_SYS_I2C_DVI_ADDR,
+				I2C_DVI_PLL_DIVIDER_REG, 1, &temp, 1);
+		if (ret) {
+			puts("I2C: failed to select dvi pll divider\n");
+			return ret;
+		}
+		temp = I2C_DVI_PLL_FILTER_HIGH_SPEED_VAL;
+		ret = i2c_write(CONFIG_SYS_I2C_DVI_ADDR,
+				I2C_DVI_PLL_FILTER_REG, 1, &temp, 1);
+		if (ret) {
+			puts("I2C: failed to select dvi pll filter\n");
+			return ret;
+		}
+	} else {
+		temp = I2C_DVI_PLL_CHARGE_CNTL_LOW_SPEED_VAL;
+		ret = i2c_write(CONFIG_SYS_I2C_DVI_ADDR,
+				I2C_DVI_PLL_CHARGE_CNTL_REG, 1, &temp, 1);
+		if (ret) {
+			puts("I2C: failed to select dvi pll charge_cntl\n");
+			return ret;
+		}
+		temp = I2C_DVI_PLL_DIVIDER_LOW_SPEED_VAL;
+		ret = i2c_write(CONFIG_SYS_I2C_DVI_ADDR,
+				I2C_DVI_PLL_DIVIDER_REG, 1, &temp, 1);
+		if (ret) {
+			puts("I2C: failed to select dvi pll divider\n");
+			return ret;
+		}
+		temp = I2C_DVI_PLL_FILTER_LOW_SPEED_VAL;
+		ret = i2c_write(CONFIG_SYS_I2C_DVI_ADDR,
+				I2C_DVI_PLL_FILTER_REG, 1, &temp, 1);
+		if (ret) {
+			puts("I2C: failed to select dvi pll filter\n");
+			return ret;
+		}
+	}
+
+	temp = I2C_DVI_POWER_MGMT_VAL;
+	ret = i2c_write(CONFIG_SYS_I2C_DVI_ADDR, I2C_DVI_POWER_MGMT_REG, 1,
+			&temp, 1);
+	if (ret) {
+		puts("I2C: failed to select dvi power mgmt\n");
+		return ret;
+	}
+
+	udelay(500);
+
+	return 0;
+}
diff --git a/board/freescale/common/diu_ch7301.h b/board/freescale/common/diu_ch7301.h
new file mode 100644
index 0000000..8b6ead0
--- /dev/null
+++ b/board/freescale/common/diu_ch7301.h
@@ -0,0 +1,13 @@
+/*
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#ifndef __DIU_HDMI_CH7301__
+#define __DIU_HDMI_CH7301__
+
+/* Programming of HDMI Chrontel CH7301 connector */
+int diu_set_dvi_encoder(unsigned int pixclock);
+
+#endif