ddi_display_controller.c

LCD驱动源代码 应用于手机的话,需要改写,找了好久,网上下的,将就一下了,参考参考,自己动手改一下吧.有在MTK平台上改成功的,放上来给大家参考一下啊

        u8MaxBrightnessPercentage = ALKALINE_MAX_BRIGHTNESS_PERCENTAGE;
    }
    else
    {
        u8MinBrightnessPercentage = MIN_BRIGHTNESS_PERCENTAGE;
        u8MaxBrightnessPercentage = MAX_BRIGHTNESS_PERCENTAGE;         
    }   
        

#if defined(DDI_DISPLAY_ALL_TX_DRIVERS) && defined(RTOS_THREADX)


    // Grab PWM for backlight use
    // Assume GPIO driver has already been initialized
    if( !(ddi_etm_IsPresent()) ) {
        ret = ddi_pwm_ChLock(1<<DDI_DISPLAY_BACKLIGHT_PWM_CHANNEL);
        assert(!ret);
    }

    // Set the initial params, 0% duty cycle
    ret = ddi_pwm_ChSetConfig((hw_pwm_Channel_t)DDI_DISPLAY_BACKLIGHT_PWM_CHANNEL,
                              PWM_STATE_HIGH,
                              PWM_STATE_LOW,
                              BACKLIGHT_PWM_FREQ, 0);
    assert(!ret);
    ddi_pwm_ChOutputEnable(1<<DDI_DISPLAY_BACKLIGHT_PWM_CHANNEL, true);
#else
    // Do a raw init of the PWM GPIO
    if( !(ddi_etm_IsPresent()) ) {
        HW_PINCTRL_MUXSEL6_CLR(0x00300000 << (2*DDI_DISPLAY_BACKLIGHT_PWM_CHANNEL));
    }
    // Set up the backlight
    BF_CLR(PWM_CTRL, SFTRST);
    BF_CLR(PWM_CTRL, CLKGATE);

    HW_PWMn_ACTIVE_WR(DDI_DISPLAY_BACKLIGHT_PWM_CHANNEL, 0);
    BF_CS5n(PWMn_PERIOD, DDI_DISPLAY_BACKLIGHT_PWM_CHANNEL,
            MATT, 0, 
            CDIV, BACKLIGHT_PWM_CDIV,
            INACTIVE_STATE, BV_PWMn_PERIOD_INACTIVE_STATE__0,
            ACTIVE_STATE, BV_PWMn_PERIOD_ACTIVE_STATE__1,
            PERIOD, BACKLIGHT_PWM_PERIOD);

    HW_PWM_CTRL_CLR(1 << DDI_DISPLAY_BACKLIGHT_PWM_CHANNEL);
#endif


}

////////////////////////////////////////////////////////////////////////////////
//! \fn static void SendControllerInitSeq(gfx_BitmapTypeEnum_t eBitmapType, uint32_t u32Width, uint32_t u32Height)
//!
//! \brief Sends commands to initialize the controller from reset
//!
//! \fntype Function
//!
//! \param[in] eBitmapType - Graphics color format specifier
//! \param[in] u32Width - Desired screen width setting
//! \param[in] u32Height - Desired screen height setting
//!
//! This function sends commands to initialize the controller after it has
//! been taken out of reset.
//!
//! \retval SUCCESS No error
//!
//! \retval ERROR_DDI_DISPLAY_CONTROLLER_BITMAP_TYPE_UNSUPPORTED - This
//!         controller does not support the given bitmap color type
//!
//! \retval ERROR_DDI_DISPLAY_CONTROLLER_SCREEN_SIZE - This
//!         controller does not support the given screen dimensions
//!
////////////////////////////////////////////////////////////////////////////////
static void SendControllerInitSeq(gfx_BitmapTypeEnum_t eBitmapType, uint32_t u32Width, uint32_t u32Height)
{
    // Init commands for the LCD hardware
    WriteDirect(CMD_MODE, 0x2c); // Standby mode off
    WriteDirect(CMD_MODE, 0x02);  // Oscillation mode
    WriteDirect(CMD_MODE, 0x01);  // ----- 
    WriteDirect(CMD_MODE, 0x20);  // DC-DC Select
    WriteDirect(CMD_MODE, 0x05);  // -----
    WriteDirect(CMD_MODE, 0x26);  // DC-DC and AMP ON/OFF
    WriteDirect(CMD_MODE, 0x01);  // -----
    WriteDirect(CMD_MODE, 0x26);  // DC-DC and AMP ON/OFF
    WriteDirect(CMD_MODE, 0x09);  // -----
    WriteDirect(CMD_MODE, 0x26);  // DC-DC and AMP ON/OFF
    WriteDirect(CMD_MODE, 0x0b);  // -----
    WriteDirect(CMD_MODE, 0x26);  // DC-DC and AMP ON/OFF
    WriteDirect(CMD_MODE, 0x0f);  // -----
    WriteDirect(CMD_MODE, 0x28);  // Temperature Compensation Set
    WriteDirect(CMD_MODE, 0x02);  // -----
    WriteDirect(CMD_MODE, 0x2e);  // DDRAM Burst mode off
    WriteDirect(CMD_MODE, 0x10);  // Driver output mode set
    WriteDirect(CMD_MODE, 0x24);  // -----
    WriteDirect(CMD_MODE, 0x22);  // Bias Set
    WriteDirect(CMD_MODE, 0x11);  // -----
    WriteDirect(CMD_MODE, 0x24);  // DCDC Clock Divisor
    WriteDirect(CMD_MODE, 0x22);  // -----
    WriteDirect(CMD_MODE, 0x42);  // X-Address Area Set
    WriteDirect(CMD_MODE, 0x00);  // ----- XStart
    WriteDirect(CMD_MODE, 0x9f);  // ----- XStop
    WriteDirect(CMD_MODE, 0x43);  // Y-Address Area Set
    WriteDirect(CMD_MODE, 0x08);  // ----- YStart
    WriteDirect(CMD_MODE, 0x87);  // ----- YStop
    WriteDirect(CMD_MODE, 0x2a);  // Contrast Control (1)
    WriteDirect(CMD_MODE, 0xbf);  // -----
    WriteDirect(CMD_MODE, 0x2b);  // Contrast Control (2)
    WriteDirect(CMD_MODE, 0x40);  // -----
    WriteDirect(CMD_MODE, 0x30);  // Addressing mode set
    WriteDirect(CMD_MODE, 0x09);  // -----
    WriteDirect(CMD_MODE, 0x32);  // ROW Vector Mode set
    WriteDirect(CMD_MODE, 0x0e);  // -----
    WriteDirect(CMD_MODE, 0x34);  // N-line Inversion Set
    WriteDirect(CMD_MODE, 0xd3);  // -----
    WriteDirect(CMD_MODE, 0x40);  // Entry Mode Set
    WriteDirect(CMD_MODE, 0x02);  // ----- X address counter mode
    WriteDirect(CMD_MODE, 0x45);  // RAM Skip area set
    WriteDirect(CMD_MODE, 0x00);  // -----
    WriteDirect(CMD_MODE, 0x53);  // Specified display pattern set
    WriteDirect(CMD_MODE, 0x00);  // -----
    WriteDirect(CMD_MODE, 0x55);  // Partial Display Mode Set
    WriteDirect(CMD_MODE, 0x00);  // -----
    WriteDirect(CMD_MODE, 0x56);  // Partial Display Start Line Set
    WriteDirect(CMD_MODE, 0x00);  // -----
    WriteDirect(CMD_MODE, 0x57);  // Partial Display End Line Set
    WriteDirect(CMD_MODE, 0x9f);  // -----
    WriteDirect(CMD_MODE, 0x59);  // Area scroll set
    WriteDirect(CMD_MODE, 0x00);  // -----
    WriteDirect(CMD_MODE, 0x00);  // -----
    WriteDirect(CMD_MODE, 0xa0);  // -----
    WriteDirect(CMD_MODE, 0x00);  // -----
    WriteDirect(CMD_MODE, 0x60);  // Data format select
}

////////////////////////////////////////////////////////////////////////////////
//! \fn static void SendControllerOutputEnable(bool bOn)
//! 
//! \brief Turns the display on or off
//!
//! \fntype Function
//!
//! \param[in] bOn - true to turn on the display, false to turn it off
//!
//! This function sends commands to the controller to enable the output of the
//! display.
//!
////////////////////////////////////////////////////////////////////////////////
static void SendControllerOutputEnable(bool bOn)
{
    if( bOn )
        WriteDirect(CMD_MODE, 0x51);
    else
        WriteDirect(CMD_MODE, 0x50);

    // Enable or disable the backlight PWM as necessary
#if defined(DDI_DISPLAY_ALL_TX_DRIVERS) && defined(RTOS_THREADX)

    ddi_pwm_ChOutputEnable(1<<DDI_DISPLAY_BACKLIGHT_PWM_CHANNEL, bOn);
#else
    if( bOn )
        HW_PWM_CTRL_SET(1 << DDI_DISPLAY_BACKLIGHT_PWM_CHANNEL);
    else
        HW_PWM_CTRL_CLR(1 << DDI_DISPLAY_BACKLIGHT_PWM_CHANNEL);
#endif
}

////////////////////////////////////////////////////////////////////////////////
//! \brief Enters/exits low power mode
//!
//! \fntype Function
//!
//! \param[in] bOn - true to set low power mode, false to exit low power mode
//!
//! FIXME!!! comment me
//!
////////////////////////////////////////////////////////////////////////////////
static void SetControllerLowPowerMode(bool bOn)
{
    if( bOn )
    {
        // Disable backlight PWM
        HW_PWM_CTRL_CLR(1 << DDI_DISPLAY_BACKLIGHT_PWM_CHANNEL);
        ddi_lcdif_Shutdown(true);
    }
    else
    {
        hw_lcdif_Init_t LcdifInit;

        // Get the LCDIF init struct to send to the LCDIF DDI init function
        ddi_display_controller_GetLcdifInitStruct(&LcdifInit, g_ddi_display_eBitmapType);

        // Run the low level init on the LCDIF
        ddi_lcdif_Init(&LcdifInit, g_ddi_display_pDmaDescChain, g_ddi_display_NumDmaDesc);

#if defined(RTOS_THREADX)
        ddi_lcdif_RegisterCompletionCallback(&g_ddi_display_DmaCompletionCallback);
#endif
        // Init the display controller, use last set width/height
        ddi_display_controller_SendCommand(DDI_DISPLAY_CONTROLLER_INIT, 
                                           g_ddi_display_eBitmapType,
                                           g_ddi_display_u16ScreenWidth,
                                           g_ddi_display_u16ScreenHeight);
    }
}


////////////////////////////////////////////////////////////////////////////////
//! \fn static void SendControllerContrast(uint32_t u32Percentage)
//!
//! \brief Sets the specified contrast percentage on the display
//!
//! \fntype Function
//!
//! \param[in] u32Percentage - Percent total contrast from 0 -> 100
//!
//! This function sends commands to the controller to set the desired contrast
//! percentage.
//!
////////////////////////////////////////////////////////////////////////////////
static void SendControllerContrast(uint32_t u32Percentage)
{
    DDI_DISPLAY_WORD_TYPE Contrast = MIN_CONTRAST + (((u32Percentage * (MAX_CONTRAST - MIN_CONTRAST))) / 100);

    WriteDirect(CMD_MODE, 0x2a);
    WriteDirect(CMD_MODE, Contrast);
}

////////////////////////////////////////////////////////////////////////////////
//! \fn static void SetPwmBrightness(uint32_t u32Percentage)
//!
//! \brief Sets the specified brightness percentage on the display
//!
//! \fntype Function
//!
//! \param[in] u32Percentage - Percent total contrast from 0 -> 100
//!
//! Sets the PWM backlight control channel according to the given brightness
//! percentage value.
//!
////////////////////////////////////////////////////////////////////////////////
static void SetPwmBrightness(uint32_t u32Percentage)
{
#if defined(DDI_DISPLAY_ALL_TX_DRIVERS) && defined(RTOS_THREADX)

    RtStatus_t ret = SUCCESS;

    if( u32Percentage > 100 )
        u32Percentage = 100;

    ret = ddi_pwm_ChSetDutyCycle((hw_pwm_Channel_t)DDI_DISPLAY_BACKLIGHT_PWM_CHANNEL,
                                 PWM_STATE_HIGH,
                                 PWM_STATE_LOW,
                                 u8MinBrightnessPercentage + 
	                             (( u32Percentage * 
                                    (u8MaxBrightnessPercentage - u8MinBrightnessPercentage))/100 ));
                                 
    assert(!ret);
#else
    uint32_t u32InactivePeriod;

    // Set the raw values in the PWM registers
    if( u32Percentage > 100 )
        u32Percentage = 100;

    u32InactivePeriod = ((BACKLIGHT_PWM_PERIOD * u8MinBrightnessPercentage)/100) + 
        (( ((BACKLIGHT_PWM_PERIOD * (u8MaxBrightnessPercentage - u8MinBrightnessPercentage))/100)
            * u32Percentage)/100);

    // Scale the range 0->100% down to 0->70% to protect the hardware
    BF_CS2n(PWMn_ACTIVE, DDI_DISPLAY_BACKLIGHT_PWM_CHANNEL, 
            ACTIVE, 0,// BACKLIGHT_PWM_PERIOD, 
            INACTIVE, u32InactivePeriod);

    HW_PWMn_PERIOD_SET(DDI_DISPLAY_BACKLIGHT_PWM_CHANNEL, 0);
#endif
}


////////////////////////////////////////////////////////////////////////////////
//! \fn static RtStatus_t SendControllerRegion(uint32_t u32XDst, uint32_t u32YDst, uint32_t *pu32Width, uint32_t *pu32Height, ddi_display_Rotation_t eRotation)
//!
//! \brief Sets up the region on the controller where pixels are to be placed
//!
//! \fntype Function
//!
//! \param[in] u32XDst - X coordinate of upper left corner of the destination region
//! \param[in] u32YDst - Y coordinate of upper left corner of the destination region
//! \param[in] pu32Width - Width of the destination region
//! \param[in] pu32Height - Height of the destination region
//! \param[in] eRotation - Desired orientation of the display
//!
//! This function sends commands to the controller to set up the destination
//! region (or "box") where pixels are to be placed.  The rotation is specified
//! here as well as with the SendControllerRotation function because some
//! controllers handle rotation on a per region basis.
//!
//! \retval SUCCESS No error
//!
//! \retval ERROR_DDI_DISPLAY_CONTROLLER_ROTATION - The specified rotation is
//!         not supported by the controller
//!
//! \retval ERROR_DDI_DISPLAY_PLACEMENT - There was an error placing the given
//!         region on the display that clipping could not compensate for.
//!
////////////////////////////////////////////////////////////////////////////////
static RtStatus_t SendControllerRegion(uint32_t u32XDst, uint32_t u32YDst, 
                                       uint32_t *pu32Width, uint32_t *pu32Height,
                                       ddi_display_Rotation_t eRotation)
{