/*
 * <:copyright-BRCM:2017:DUAL/GPL:standard
 * 
 *    Copyright (c) 2017 Broadcom 
 *    All Rights Reserved
 * 
 * Unless you and Broadcom execute a separate written software license
 * agreement governing use of this software, this software is licensed
 * to you under the terms of the GNU General Public License version 2
 * (the "GPL"), available at http://www.broadcom.com/licenses/GPLv2.php,
 * with the following added to such license:
 * 
 *    As a special exception, the copyright holders of this software give
 *    you permission to link this software with independent modules, and
 *    to copy and distribute the resulting executable under terms of your
 *    choice, provided that you also meet, for each linked independent
 *    module, the terms and conditions of the license of that module.
 *    An independent module is a module which is not derived from this
 *    software.  The special exception does not apply to any modifications
 *    of the software.
 * 
 * Not withstanding the above, under no circumstances may you combine
 * this software in any way with any other Broadcom software provided
 * under a license other than the GPL, without Broadcom's express prior
 * written consent.
 * 
 * :>
 */

#include "boardparms.h"
#include "bcm_led.h"
#include "bcm_gpio.h"

#include <linux/kernel.h>
#include <linux/module.h>
#include <bcm_map_part.h>
#include <linux/string.h>


// #define BCM_LED_DEBUG 1

/*
  The Linux board driver handles any necessary locking so these functions should not be called
  directly from elsewhere.
*/


/**********************************************************************
 * Name        : bcm_led_driver_set
 *
 * Description : Given a GPIO number and a state, configures the GPIO
 *               for OUTPUT and sets it to the value in state [1,0]
 *
 * Parameters  : [IN] num        - GPIO number (physical GPIO)
 *               [IN] state      - state (1: LED_ON, 0: LED_OFF)
 *
 * Notes       : Uses bcm_gpio functions to configure GPIO registers.
 *               The caller function must handle the GPIO spinlock
 *               when calling this function.
 *
 *               Assumes GPIO_num is in functional mode 0 (not muxed).
 *********************************************************************/
void bcm_led_driver_set(unsigned short num, unsigned short state)
{
#ifdef BCM_LED_DEBUG
    printk("LED %x set state %d\n",num,state);
#endif

    /* Regular GPIO-driven LED */
    bcm_gpio_set_dir(num, 1);
    bcm_gpio_set_data(num, state);
}

/**********************************************************************
 * Name        : bcm_led_driver_toggle
 *
 * Description : Given a GPIO number toggles its value
 *
 * Parameters  : [IN] pin_num      - GPIO number (physical GPIO)
 *
 * Notes       : Uses bcm_gpio functions to configure GPIO registers.
 *               The caller function must handle the GPIO spinlock
 *               when calling this function.
 *
 *               Assumes GPIO_num is in functional mode 0 (not muxed).
 *********************************************************************/
void bcm_led_driver_toggle(unsigned short num)
{
    bcm_gpio_set_data(num, 1 ^ bcm_gpio_get_data(num));
}

/**********************************************************************
 * Name        : bcm_common_led_setAllSoftLedsOff
 *
 * Description : Turns off the PowerOn LED
 *********************************************************************/
void bcm_common_led_setAllSoftLedsOff(void)
{
    unsigned short gpio;
    int i = 0, rc;
    void* token = NULL;

    for(;;)
    {
        rc = BpGetLedGpio(i, &token, &gpio);
        if( rc == BP_MAX_ITEM_EXCEEDED )
            break;
        else if( rc == BP_SUCCESS && gpio != BP_GPIO_NONE )
        {
            if (gpio & BP_ACTIVE_LOW)
                bcm_led_driver_set(gpio, 1);
            else
                bcm_led_driver_set(gpio, 0);
        }
        else
        {
            token = 0;
            i++;
        }
    }

    return;
}

/**********************************************************************
 * Name        : bcm_common_led_init
 *
 *********************************************************************/
void bcm_common_led_init(void) 
{
}