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>
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;
+}