marvell/services/audio/libacm/acm/src/acm_gpio.c

/*
* All Rights Reserved
*
* MARVELL CONFIDENTIAL
* Copyright 2012 Marvell International Ltd All Rights Reserved.
* The source code contained or described herein and all documents related to
* the source code ("Material") are owned by Marvell International Ltd or its
* suppliers or licensors. Title to the Material remains with Marvell International Ltd
* or its suppliers and licensors. The Material contains trade secrets and
* proprietary and confidential information of Marvell or its suppliers and
* licensors. The Material is protected by worldwide copyright and trade secret
* laws and treaty provisions. No part of the Material may be used, copied,
* reproduced, modified, published, uploaded, posted, transmitted, distributed,
* or disclosed in any way without Marvell's prior express written permission.
*
* No license under any patent, copyright, trade secret or other intellectual
* property right is granted to or conferred upon you by disclosure or delivery
* of the Materials, either expressly, by implication, inducement, estoppel or
* otherwise. Any license under such intellectual property rights must be
* express and approved by Marvell in writing.
*
*/

#define LOG_TAG "acm_ach_gpio"
#define LOG_NDEBUG 0

#include <cutils/log.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include "acm_ach.h"

#ifndef GPIO_SPKR_SWITCH_PATH
#define GPIO_SPKR_SWITCH_PATH "/sys/bus/platform/devices/88pm80x-codec/gpio_speaker_switch_select"
#endif

static void GPIO_Enable(void);
static void GPIO_Disable(void);
static void GPIO_Reset(void);
static void GPIO_GetTypeAndID(int *type, unsigned char *id);
static ACH_ReturnCode GPIO_Handle(void *setting);

ACH_ComponentHandler gpio_handler = {
    COMPONENT_INACTIVE,
    0,
    GPIO_Enable,
    GPIO_Disable,
    GPIO_Reset,
    GPIO_GetTypeAndID,
    GPIO_Handle,
};

static void GPIO_Set(unsigned char port, unsigned char value) {
    //FIXME only can manipulate the specific port(GPIO19)
    char buf[2];
    int gpio_fd = open(GPIO_SPKR_SWITCH_PATH, O_RDWR | O_SYNC);

    if (gpio_fd == -1) {
        ALOGW(GPIO_Set, "%s: Failed to open GPIO %d, %s", __FUNCTION__, port,
                strerror(errno));
        return;
    }

    buf[1] = '\n';
    if (value == 1) {
        buf[0] = '1';
    } else {
        buf[0] = '0';
    }
    write(gpio_fd, buf, sizeof(buf));

    close(gpio_fd);
}

static void GPIO_Get(unsigned char port, unsigned char *value) {
    //FIXME only can manipulate the specific port(GPIO19)
    int gpio_fd = open(GPIO_SPKR_SWITCH_PATH, O_RDONLY);
    if (gpio_fd == -1) {
        ALOGW(GPIO_Get, "%s: Failed to open GPIO %d, %s", __FUNCTION__, port,
        strerror(errno));
        return;
    }
    read(gpio_fd, value, sizeof(unsigned char));
    close(gpio_fd);
}

//--------------------------------------------------------------
//-------- External ACH APIs
//--------------------------------------------------------------
static void GPIO_Enable(void) {
    ALOGI(GPIO_Enable, "%s: enable gpio component", __FUNCTION__);
    // implemented if GPIO component needs
    // GPIOEnable();
    usleep(2000);
}

static void GPIO_Disable(void) {
    ALOGI(GPIO_Disable, "%s: disable gpio component", __FUNCTION__);
    // implemented if GPIO component needs
    // GPIODisable();
    usleep(2000);
}

static void GPIO_Reset(void) {
    ALOGI(GPIO_Reset, "%s: reset gpio component", __FUNCTION__);
}

static void GPIO_GetTypeAndID(int *type, unsigned char *id) {
    ALOGI(GPIO_GetTypeAndID, "%s: Get type and ID for GPIO component", __FUNCTION__);
    *type = COMPONENT_TYPE_GPIO;
    // implemented if GPIO component needs id
    //GPIO_Get(GPIO_ID, id);
}

static ACH_ReturnCode GPIO_Handle(void *setting) {
    ACH_ComponentParameter *param = (ACH_ComponentParameter *)setting;

    if (param) {
        ALOGI(GPIO_Handle, "%s: set GPIO port %d [%d]", __FUNCTION__,
            param->gpio.gpio_port, param->gpio.gpio_value);
        GPIO_Set(param->gpio.gpio_port, param->gpio.gpio_value);
    }

    return ACH_RC_OK;
}