keypadlight_plat.c

Wince6环境下

/*++
"This software program is available to you under a choice of one of two 
licenses.  You may choose to be licensed under either the GNU General Public 
License (GPL) Version 2, June 1991, available at 
http://www.fsf.org/copyleft/gpl.html, or the BSD License, the text of
which follows:

Copyright (c) 1996-2005, Intel Corporation. All rights reserved.

Redistribution and use in source and binary forms, with or without 
modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this 
list of conditions and the following disclaimer. 

Redistributions in binary form must reproduce the above copyright notice, this
list of conditions and the following disclaimer in the documentation and/or 
other materials provided with the distribution. 

Neither the name of the Intel Corporation ("Intel") nor the names of its 
contributors may be used to endorse or promote products derived from this
software without specific prior written permission. 

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
--*/
/* 
 * xllp_keypadlight_plat.c
 *
 * xllp_keypadlight_plat driver
 *
 */
 
#include "xllp_keypadlight_plat.h"
#include "xllp_bkl_micco_B0.h"
#include "micco.h"

BOOL XllpKeypadlightMiccoInit(HANDLE hMiccoDrv)
{
    if ( hMiccoDrv==NULL)
    {
        //obtain micco driver handle
        hMiccoDrv=CreateFile(PIC_FILE_NAME, 0, 0, NULL, 0, 0, NULL);
        //map OST registers
        if (hMiccoDrv == INVALID_HANDLE_VALUE)
        {
            RETAILMSG(1, (TEXT("+Keypadlight Enable error - INVALID_HANDLE_VALUE Micco Drv\r\n")));
            return FALSE;
        }
    }

    return TRUE;
}

BOOL XllpKeypadLightPwm(HANDLE hMiccoDrv, BYTE dutyCycle)
{
    if (dutyCycle == 0)
    {
        ModifyMiccoDevReg(hMiccoDrv, 0x90, 0x0, 0xFF, NULL);
        ModifyMiccoDevReg(hMiccoDrv, 0xB0, 0x0, 0xFF, NULL);
    }
    else
    {
        ModifyMiccoDevReg(hMiccoDrv, 0x90, 0x1, 0xFF, NULL);
        ModifyMiccoDevReg(hMiccoDrv, 0xB0, 0x8, 0xFF, NULL);
    }
    
    if (hMiccoDrv!=NULL)
    {
        ModifyMiccoDevReg(hMiccoDrv, XLLP_MICCO_LED1_CONTROL, (0x1 & LED_RAMP_MASK), LED_RAMP_MASK, NULL);
        ModifyMiccoDevReg(hMiccoDrv, XLLP_MICCO_LED1_CONTROL, (dutyCycle & LED_PWM_MASK), LED_PWM_MASK, NULL);
        ModifyMiccoDevReg(hMiccoDrv, XLLP_MICCO_LED1_CONTROL, (0x0 & LED_RAMP_MASK), LED_RAMP_MASK, NULL);
        
        ModifyMiccoDevReg(hMiccoDrv, XLLP_MICCO_LED2_CONTROL, (0x1 & LED_RAMP_MASK), LED_RAMP_MASK, NULL);
        ModifyMiccoDevReg(hMiccoDrv, XLLP_MICCO_LED2_CONTROL, (dutyCycle & LED_PWM_MASK), LED_PWM_MASK, NULL);
        ModifyMiccoDevReg(hMiccoDrv, XLLP_MICCO_LED2_CONTROL, (0x0 & LED_RAMP_MASK), LED_RAMP_MASK, NULL);
    }
    else
    {
        return FALSE;
    }

    return TRUE;
}

/*------------------------------------------------------------
 Function: XllpKeyPadBacklightOn
 Purpose:  This function turns on/off the KeyPad Backlight with the 
           appropriate settings.
 Returns:  success/failure.
--------------------------------------------------------------*/

XLLP_STATUS_T XllpKeyPadBacklightOn(
	HANDLE hMiccoDrv,
	XLLP_BOOL_T bChangeInstantly,
	XLLP_BOOL_T on)
{
	if (NULL == hMiccoDrv)
	{
		return XLLP_STATUS_WRONG_PARAMETER;
	}

	if (XLLP_TRUE == on)
	{
		XllpKeypadLightPwm(hMiccoDrv, 95);
	}
	else
	{
		XllpKeypadLightPwm(hMiccoDrv, 0);
	}

  return XLLP_STATUS_SUCCESS;
}