zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/boot/common/src/uboot/drivers/lcd/lcd_blg.c b/boot/common/src/uboot/drivers/lcd/lcd_blg.c
new file mode 100644
index 0000000..6391f7e
--- /dev/null
+++ b/boot/common/src/uboot/drivers/lcd/lcd_blg.c
@@ -0,0 +1,240 @@
+/*********************************************************************
+ Copyright 2014 by ZTE Corporation.
+*
+* FileName::
+* File Mark:
+* Description:
+* Others:
+* Version:
+* Author:
+* Date:
+
+* History 1:
+* Date:
+* Version:
+* Author:
+* Modification:
+* History 2:
+**********************************************************************/
+
+/*******************************************************************************
+* Include files
+*******************************************************************************/
+#include <common.h>
+#include <errno.h>
+#include <command.h>
+#include <malloc.h>
+#include <asm/io.h>
+#include <boot_mode.h>
+#include <i2c.h>
+#include <drvs_gpio.h>
+#include "drvs_aw9523b.h"
+#include <lcd_blg.h>
+
+
+/*******************************************************************************
+* Macro
+*******************************************************************************/
+#define AW9523B_AD1AD0 (0x3) /* AD1, AD0 pin connection */
+#define AW9523B_ROW_POS (1) /* start position of adjacent row pins */
+#define AW9523B_ROW_NUM (7) /* count of adjacent row pins */
+#define AW9523B_COL_POS (4) /* start position of adjacent column pins */
+#define AW9523B_COL_NUM (3) /* count of adjacent column pins */
+
+#define ROW_BITS_MASK (((1<<AW9523B_ROW_NUM) - 1)<<AW9523B_ROW_POS)
+#define COL_BITS_MASK (((1<<AW9523B_COL_NUM) - 1)<<AW9523B_COL_POS)
+
+#define AW9523B_I2C_SLAVE_ADDR (I2C_ADDR_AW9523B_WITHOUT_AD | AW9523B_AD1AD0)
+
+/*******************************************************************************
+* Types
+*******************************************************************************/
+typedef struct
+{
+ UINT8 addr;
+ UINT8 value;
+} T_ZDrvKpd_ChipConfig;
+
+/*******************************************************************************
+* Function Prototypes
+*******************************************************************************/
+
+
+/*******************************************************************************
+* Global Variable
+*******************************************************************************/
+static const UINT32 s_kpdGpioReset = 75; /* keypad chip reset pin */
+/* other chips which use the same i2c bus */
+static const UINT32 s_codecGpioReset = 71; /* codec chip reset pin */
+static const UINT32 s_cameraGpioReset = 44; /* camera chip reset pin */
+
+/*******************************************************************************
+* Function Defines
+*******************************************************************************/
+
+/*******************************************************************************
+ * Function: zx234290_i2c_read_reg
+ * Description:
+ * Parameters:
+ * Input:
+ *
+ * Output:
+ *
+ * Returns:
+ *
+ *
+ * Others:
+ ********************************************************************************/
+int aw9523b_i2c_read_reg(ushort reg, uchar *val)
+{
+ return i2c_read(1, AW9523B_I2C_SLAVE_ADDR, reg, 8, val, 1);
+}
+
+/*******************************************************************************
+ * Function: zx234290_i2c_write_reg
+ * Description:
+ * Parameters:
+ * Input:
+ *
+ * Output:
+ *
+ * Returns:
+ *
+ *
+ * Others:
+ ********************************************************************************/
+int aw9523b_i2c_write_reg(ushort reg, uchar *val)
+{
+ return i2c_write(1, AW9523B_I2C_SLAVE_ADDR, reg, 8, val, 1);
+}
+
+/*******************************************************************************
+* Function: kpd_ChipReset
+* Description: reset the keypad and backlight chip.
+* Parameters:
+* Input:
+* None
+* Output:
+* None
+* Returns:
+* DRV_SUCCESS or error code.
+* Others:
+*******************************************************************************/
+static SINT32 kpd_ChipReset(VOID)
+{
+ SINT32 ret = SUCCESS;
+
+#if 1
+ /* reset camera */
+ zDrvGpio_PullUpDown(s_cameraGpioReset, 0);
+ zDrvGpio_SetFunc(s_cameraGpioReset, GPIO44_GPIO44);
+ zDrvGpio_SetDirection(s_cameraGpioReset, GPIO_OUT);
+ zDrvGpio_SetOutputValue(s_cameraGpioReset, GPIO_LOW);
+
+ /* reset codec */
+ zDrvGpio_PullUpDown(s_codecGpioReset, 0);
+ zDrvGpio_SetFunc(s_codecGpioReset, GPIO71_GPIO71);
+ zDrvGpio_SetDirection(s_codecGpioReset, GPIO_OUT);
+ zDrvGpio_SetOutputValue(s_codecGpioReset, GPIO_LOW);
+#endif
+
+ ret = zDrvGpio_PullUpDown(s_kpdGpioReset, 0);
+ if( ret != SUCCESS )
+ {
+ return -EIO;
+ }
+
+ ret = zDrvGpio_SetFunc(s_kpdGpioReset, GPIO75_GPIO75);
+ if( ret != SUCCESS )
+ {
+ return -EIO;
+ }
+
+ zDrvGpio_SetDirection(s_kpdGpioReset, GPIO_OUT);
+ zDrvGpio_SetOutputValue(s_kpdGpioReset, GPIO_LOW);
+
+ udelay(100000/30/200); /*Actual 0.1s/200, i.e. 50us */
+
+ zDrvGpio_SetOutputValue(s_kpdGpioReset, GPIO_HIGH);
+
+ udelay(100000/30/200); /*Actual 0.1s/200, i.e. 50us */
+
+ return SUCCESS;
+}
+
+/*******************************************************************************
+* Function: zDrvLcdBlg_Initiate
+* Description: Initiate the keypad and backlight chip
+* Parameters:
+* Input:
+* None
+* Output:
+* None
+* Returns:
+* DRV_SUCCESS or error code
+* Others:
+*******************************************************************************/
+SINT32 zDrvLcdBlg_Initiate(VOID)
+{
+ const T_ZDrvKpd_ChipConfig aw9523b_configs[] = {
+ {REG_MODE_P0, COL_BITS_MASK},
+ {REG_MODE_P1, ROW_BITS_MASK},
+ };
+ SINT32 ret = SUCCESS;
+ SINT32 i = 0;
+ UINT8 tmp_reg = 0;
+
+ ret = kpd_ChipReset();
+ if(ret != SUCCESS)
+ {
+ return ret;
+ }
+
+ /* check I2C communication and chip status */
+ ret = aw9523b_i2c_read_reg(REG_ID, &tmp_reg);
+ if (ret != SUCCESS)
+ {
+ return -EIO;
+ }
+ if(tmp_reg != AW9523B_REG_ID_VALUE)
+ {
+ return -EIO;
+ }
+
+ /* set chip registers */
+ for (i = 0; i < (sizeof(aw9523b_configs) / sizeof(aw9523b_configs[0])); i++)
+ {
+ ret = aw9523b_i2c_write_reg(aw9523b_configs[i].addr, &aw9523b_configs[i].value);
+ if (ret != SUCCESS)
+ {
+ return -EIO;
+ }
+ }
+
+ return SUCCESS;
+}
+
+/*******************************************************************************
+* Function: zDrvLcdBlg_SetBlg
+* Description: Set lcd backlight.
+* Parameters:
+* Input:
+* brightness:
+* Output:
+* None
+* Returns:
+* DRV_SUCCESS or error code
+* Others:
+*******************************************************************************/
+SINT32 zDrvLcdBlg_SetBlg(UINT8 brightness)
+{
+ SINT32 ret = SUCCESS;
+ uchar val = brightness;
+
+ ret |= aw9523b_i2c_write_reg(REG_DIM0, &val);
+ ret |= aw9523b_i2c_write_reg(REG_DIM4, &val);
+ ret |= aw9523b_i2c_write_reg(REG_DIM5, &val);
+
+ return ret;
+}
+