C++ (Cpp) fmc_update_region_info示例

示例#1

文件： fmdrv_rx.c 项目： Molinager/LG_MSM8974

/* Sets band (0-US; 1-Europe; 2-Japan) */
int fm_rx_set_region(struct fmdrv_ops *fmdev,
            unsigned char region_to_set)
{
    unsigned char payload = FM_STEREO_AUTO|FM_BAND_REG_WEST;
    unsigned short boundary[2];

    int ret = -EPERM;
    V4L2_FM_DRV_DBG(V4L2_DBG_TX,"fm_rx_set_region In region_to_set %d",\
        region_to_set);
    if (fmdev->curr_fmmode != FM_MODE_RX)
        return ret;

    if (region_to_set != FM_REGION_NA &&
            region_to_set != FM_REGION_EUR &&
        region_to_set != FM_REGION_JP &&
        region_to_set != FM_REGION_RUS &&
        region_to_set != FM_REGION_CHN)
    {
        V4L2_FM_DRV_ERR("(fmdrv): Invalid band");
        ret = -EINVAL;
        return ret;
    }
    if (region_to_set == FM_REGION_JP ||
        region_to_set == FM_REGION_RUS ||
        region_to_set == FM_REGION_CHN)
    {
        memcpy(&fmdev->rx.region, &region_configs[region_to_set], sizeof(struct region_info));
        boundary[0] = fmdev->rx.region.high_bound;
        boundary[1] = fmdev->rx.region.low_bound;
        fmc_send_cmd(fmdev, FM_SEARCH_BOUNDARY, boundary, sizeof(boundary), REG_WR,
                    &fmdev->maintask_completion, NULL, NULL);
    }
    else {
        boundary[0] = 0;
        boundary[1] = 0;
        fmc_send_cmd(fmdev, FM_SEARCH_BOUNDARY, boundary, sizeof(boundary), REG_WR,
                    &fmdev->maintask_completion, NULL, NULL);
    }
    if (region_to_set == FM_REGION_JP)/* set japan region */
    {
        payload |= FM_BAND_REG_EAST;
    }

    /* Send cmd to set the band  */
    ret = fmc_send_cmd(fmdev, FM_REG_FM_CTRL, &payload, sizeof(payload), REG_WR,
        &fmdev->maintask_completion, NULL, NULL);
    FM_CHECK_SEND_CMD_STATUS(ret);

    fmc_update_region_info(fmdev, region_to_set);

    return ret;
}

示例#2

文件： fmdrv_rx.c 项目： 383530895/linux

/* Sets band (0-Europe/US; 1-Japan) */
int fm_rx_set_region(struct fmdev *fmdev, u8 region_to_set)
{
	u16 payload;
	u32 new_frq = 0;
	int ret;

	if (region_to_set != FM_BAND_EUROPE_US &&
	    region_to_set != FM_BAND_JAPAN) {
		fmerr("Invalid band\n");
		return -EINVAL;
	}

	if (fmdev->rx.region.fm_band == region_to_set) {
		fmerr("Requested band is already configured\n");
		return 0;
	}

	/* Send cmd to set the band  */
	payload = (u16)region_to_set;
	ret = fmc_send_cmd(fmdev, BAND_SET, REG_WR, &payload,
			sizeof(payload), NULL, NULL);
	if (ret < 0)
		return ret;

	fmc_update_region_info(fmdev, region_to_set);

	/* Check whether current RX frequency is within band boundary */
	if (fmdev->rx.freq < fmdev->rx.region.bot_freq)
		new_frq = fmdev->rx.region.bot_freq;
	else if (fmdev->rx.freq > fmdev->rx.region.top_freq)
		new_frq = fmdev->rx.region.top_freq;

	if (new_frq) {
		fmdbg("Current freq is not within band limit boundary,"
				"switching to %d KHz\n", new_frq);
		 /* Current RX frequency is not in range. So, update it */
		ret = fm_rx_set_freq(fmdev, new_frq);
	}

	return ret;
}