/********************************************************************************
 ** File Name:     cstn_nt7526.c                                                *
 ** Description:															    *
 **    This file contains driver for NT7526(cstn).						    *
 ** Author:         David.Jia                                                   *
 ** DATE:           09/02/2005                                                  *
 ** Copyright:      2005 Spreatrum, Incoporated. All Rights Reserved.           *
 ** Description:                                                                *
 **     Copy from oled_NT7526.c.                                                *                                                            *
 ********************************************************************************

 ********************************************************************************
 **                        Edit History                                         *
 ** ----------------------------------------------------------------------------*
 ** DATE            NAME            DESCRIPTION                                 *
 ** 09/02/2005      David.Jia       Create.                                     *
 ********************************************************************************/
#include "os_api.h"
#include "sci_types.h"
//#include "lcd_api.h"
#include "gpio_api.h"
#include "lcd.h"
#include "sc6600d_reg.h"

 #ifdef   __cplusplus
    extern   "C" 
    {
#endif

/**---------------------------------------------------------------------------*
 **                            Macro Define
 **---------------------------------------------------------------------------*/

#define NT7526_WIDTH    96
#define NT7526_HEIGHT   96

__inline static void Delayms(uint32 ms)
{
	uint32 tick_old, tick_new;
	
	tick_old = tick_new = SYSTEM_CURRENT_CLOCK;
	
	while((tick_new-tick_old) < ms )
	{
		tick_new = SYSTEM_CURRENT_CLOCK;
	}
}

//macro to read GRAM
//Read/Write NT7526
__inline void NT7526_Command(uint16 c)
{    
    *(volatile uint16 *)0x58010000 = c;
}

__inline void NT7526_Data(uint16 d)
{
    *(volatile uint16 *)0x58018000 = d;    
}


/**---------------------------------------------------------------------------*
 **                      Function  Definitions
 **---------------------------------------------------------------------------*/
LOCAL ERR_LCD_E NT7526_InvalidateRect(
	uint16 left, 	//the left value of the rectangel
	uint16 top, 	//top of the rectangle
	uint16 right, 	//right of the rectangle
	uint16 bottom	//bottom of the rectangle
	);
	
void NT7526_Reset(void);

LOCAL ERR_LCD_E NT7526_Invalidate(void);

void NT7526_Close(void);

LOCAL ERR_LCD_E NT7526_SetDisplayWindow(
	uint16 left, 		//left of the window
	uint16 top,			//top of the window
	uint16 right,		//right of the window
	uint16 bottom		//bottom of the window
	);

void NT7526_Reset(void)	
{
    SCI_TRACE_LOW("NT7526_Reset");
    
    NT7526_Command(0x0040);//ENTRY_MODE_SET
    NT7526_Command(0x0080);//16B=1,MDI=0,MX=0,MY=0,XY=0,RMW=0
        
    NT7526_Command(0x002C);//STANDBY_MODE_OFF
    
    Delayms(20);//20ms
       
    NT7526_Command(0x0002);//OSC_MODE_SET
    NT7526_Command(0x0001);//Internal OSC ON
    
    Delayms(20);//20ms
    
    NT7526_Command(0x0020);//DC_DC_SELECT
    NT7526_Command(0x0033);//2.0x
    
    NT7526_Command(0x0022);//BIAS_SET
    NT7526_Command(0x0033);//TFT_writec(0x02); //All Display Mode=1/6 Bias, -4x

    NT7526_Command(0x0024);//DC_DC_CLK_DIV_SET
    NT7526_Command(0x0004);//fOSC/16
    
    //TFT_writec(0x24);//DC_DC_CLK_DIV_SET
    //TFT_writec(0x00);//fOSC/8
    
    NT7526_Command(0x0026);//DC_DC_AMP_SET
    NT7526_Command(0x0001);//BT1 ON
    Delayms(100);//20ms
    
    NT7526_Command(0x0026);//DC_DC_AMP_SET
    NT7526_Command(0x0009);//BT1,AMP ON
    Delayms(100);//20ms
    
    NT7526_Command(0x0026);//DC_DC_AMP_SET
    NT7526_Command(0x000B);//BT1,BT2,AMP ON
    Delayms(100);//100ms
    
    NT7526_Command(0x0026);//DC_DC_AMP_SET
    NT7526_Command(0x000F);//BT1,BT2,BT3,AMP ON
   
	Delayms(100);
    NT7526_Command(0x0028);//Temperature Compensation Set
    NT7526_Command(0x0000);
    

    NT7526_Command(0x0053);//Display Pattern Set
    NT7526_Command(0x0000);//Normal Display
    
    NT7526_Command(0x0010);//DRIVER_OUT_SET
    NT7526_Command(0x0000);//SWP=0,CDR=0;     
    
    NT7526_Command(0x0030);//Row Vector Mode Set
    NT7526_Command(0x000a);//INC=1, Every subframe

    NT7526_Command(0x0032);//N_LINEE_INVERSION
    NT7526_Command(0x0002);//FIM=1, N-block=13
    
    //NT7526_Command(0x0040);//ADDR_MODE_SET
    //NT7526_Command(0x0088);//No dummy subgroup
    
    NT7526_Command(0x0043);//X_ADDR_AREA_SET
    NT7526_Command(0x0000);
    NT7526_Command(0x005F);
    NT7526_Command(0x0042);//Y_ADDR_AREA_SET
    NT7526_Command(0x0000);
    NT7526_Command(0x005F);

    NT7526_Command(0x0034);//N-block Inversion Set
    NT7526_Command(0x008f);//Every 15 block and every frame

    NT7526_Command(0x002A);//CONTRAST_CONTROL
    NT7526_Command(0x0082);//TFT_writec(0x20);
    
    NT7526_Command(0x002B);//CONTRAST_CONTROL2
    NT7526_Command(0x0010);

    NT7526_Command(0x0055);//Partial Display Mode Set
    NT7526_Command(0x0000);//Normal Mode Display Duty Ratio 1/96

    NT7526_Command(0x0018);//Monitor Signal Control
    NT7526_Command(0x000f);//FR, CL, PM, SYNC head of 1st subframe	
	
	Delayms(100);	
    NT7526_Command(0x0051);//DISPLAY_ON	
    Delayms(100);
}


LOCAL void  NT7526_Clear(
						uint32 color		//color to fill the whole lcd.
						)
{
	int i, j;
	
	SCI_TRACE_LOW("NT7526_Clear");
	
	NT7526_SetDisplayWindow(0, 0, NT7526_WIDTH-1, NT7526_HEIGHT-1);
	
    for (i = 0; i < NT7526_HEIGHT; i++)
    {
        for (j = 0; j < NT7526_WIDTH; j++)
        {
            NT7526_Data(color);
        }   
    }    
}


LOCAL ERR_LCD_E NT7526_Invalidate(void)
{
    int16 x = 0, y = 0;
    const uint16 *buf = NULL;
    uint8	lcd_mode = 0;
    
    SCI_TRACE_LOW("NT7526_Invalidate.");
    if (LCD_GetRefreshFlag() != TRUE )
	{
		return ERR_LCD_OPERATE_FAIL ;
	}

	lcd_mode = w99685CMD_GetLCMControlMode();
	if( 1 == lcd_mode )
	{
		//W99685CMD_SetLCMControlMode(0);
		return ERR_LCD_NONE;
	}
	
    buf = (uint16 *)LCD_GetSubLCDBuffer();
    
    NT7526_SetDisplayWindow(0, 0, NT7526_WIDTH-1, NT7526_HEIGHT-1);
    
    for (y = 0; y < NT7526_HEIGHT ; y++)
    {
        for (x = 0; x < NT7526_WIDTH; x++)
        {
            NT7526_Data(buf[y*NT7526_WIDTH + x]);
        }
    }
    
    if( 1 == lcd_mode )
	{
		W99685CMD_SetLCMControlMode(0);
	}
	
   	return ERR_LCD_NONE;
}


void NT7526_Close(void)
{
    SCI_TRACE_LOW("NT7526_Close");
    
    NT7526_Command(0x2D);      //Standby ON
    NT7526_Command(0x50);      //Display OFF
    
    NT7526_Command(0x26);      //DCDC3 OFF
    NT7526_Command(0x0B);
    
    NT7526_Command(0x26);      //DCDC2 OFF
    NT7526_Command(0x09);

    NT7526_Command(0x26);      //AMP OFF
    NT7526_Command(0x01);

    NT7526_Command(0x26);      //DCDC1 OFF
    NT7526_Command(0x00);
    
    Delayms(300);
}



LOCAL ERR_LCD_E  NT7526_EnterSleep(
	BOOLEAN is_sleep 	//SCI_TRUE: exter sleep mode;SCI_FALSE:exit sleep mode.
	)
{
	SCI_TRACE_LOW("NT7526_EnterSleep,%d", is_sleep);
	    
    if (is_sleep)   //enter sleep mode
    {    
        NT7526_Command(0x2D);       //Standby Mode ON
    }
    else            //sleep mode release 
    {
        NT7526_Command(0x2C);       //Standby Mode OFF
        Delayms(100);
        NT7526_Command(0x51);       //Display ON        
    }
	
	return ERR_LCD_NONE;
}

/*****************************************************************************/
//  Description:    Enable lcd to partial display mode, so can save power.