rt5625 mic_ctrl sysfs

gistfile1.c

static ssize_t rt5625_mic_ctrl_show(struct device *dev,
                struct device_attribute *attr, char *buf)
{
        struct i2c_client *client = to_i2c_client(dev);
        struct rt5625_priv *rt5625 = i2c_get_clientdata(client);
        struct snd_soc_codec *codec = rt5625->codec;

        int data = snd_soc_read(codec, RT5625_MIC_CTRL);

        return sprintf(buf, "%x",data);
}

static ssize_t rt5625_mic_ctrl_store(struct device *dev,
                struct device_attribute *attr, const char *buf, size_t count)
{
        struct i2c_client *client = to_i2c_client(dev);
        struct rt5625_priv *rt5625 = i2c_get_clientdata(client);
        struct snd_soc_codec *codec = rt5625->codec;

        long regvalue;
        int status;

        status = strict_strtol(buf,16,&regvalue);
        if (status != 0) {
                printk("rt5625 invalid parameter format %s\n",buf);
                return -EINVAL;
        }

        snd_soc_write(codec, RT5625_MIC_CTRL, (int)regvalue&0xFFFF);
        return count;
}


static DEVICE_ATTR(mic_ctrl, S_IRUGO | S_IWUSR | S_IWGRP,
                 rt5625_mic_ctrl_show, rt5625_mic_ctrl_store);