C++ (Cpp) bam_mux_write_cmd Examples

Example #1

File: bam_dmux.c Project: Brainiarc7/android_kernel_huawei_u8185

int msm_bam_dmux_open(uint32_t id, void *priv,
			void (*receive_cb)(void *, struct sk_buff *),
			void (*write_done)(void *, struct sk_buff *))
{
	struct bam_mux_hdr *hdr;
	unsigned long flags;
	int rc = 0;

	DBG("%s: opening ch %d\n", __func__, id);
	if (!bam_mux_initialized)
		return -ENODEV;
	if (id >= BAM_DMUX_NUM_CHANNELS)
		return -EINVAL;

	hdr = kmalloc(sizeof(struct bam_mux_hdr), GFP_KERNEL);
	if (hdr == NULL) {
		pr_err("%s: hdr kmalloc failed. ch: %d\n", __func__, id);
		return -ENOMEM;
	}
	spin_lock_irqsave(&bam_ch[id].lock, flags);
	if (bam_ch_is_open(id)) {
		DBG("%s: Already opened %d\n", __func__, id);
		spin_unlock_irqrestore(&bam_ch[id].lock, flags);
		kfree(hdr);
		goto open_done;
	}
	if (!bam_ch_is_remote_open(id)) {
		DBG("%s: Remote not open; ch: %d\n", __func__, id);
		spin_unlock_irqrestore(&bam_ch[id].lock, flags);
		kfree(hdr);
		rc = -ENODEV;
		goto open_done;
	}

	bam_ch[id].receive_cb = receive_cb;
	bam_ch[id].write_done = write_done;
	bam_ch[id].priv = priv;
	bam_ch[id].status |= BAM_CH_LOCAL_OPEN;
	spin_unlock_irqrestore(&bam_ch[id].lock, flags);

	hdr->magic_num = BAM_MUX_HDR_MAGIC_NO;
	hdr->cmd = BAM_MUX_HDR_CMD_OPEN;
	hdr->reserved = 0;
	hdr->ch_id = id;
	hdr->pkt_len = 0;
	hdr->pad_len = 0;

	rc = bam_mux_write_cmd((void *)hdr, sizeof(struct bam_mux_hdr));

open_done:
	DBG("%s: opened ch %d\n", __func__, id);
	return rc;
}

Example #2

File: bam_dmux.c Project: yxsh/ZTE-Blade-2.6.38.6

int msm_bam_dmux_close(uint32_t id)
{
	struct bam_mux_hdr *hdr;
	unsigned long flags;
	int rc;

	if (id >= BAM_DMUX_NUM_CHANNELS)
		return -EINVAL;
	DBG("%s: closing ch %d\n", __func__, id);
	if (!bam_mux_initialized)
		return -ENODEV;
	spin_lock_irqsave(&bam_ch[id].lock, flags);

	bam_ch[id].write_done = NULL;
	bam_ch[id].receive_cb = NULL;
	bam_ch[id].priv = NULL;
	bam_ch[id].status &= ~BAM_CH_LOCAL_OPEN;
	spin_unlock_irqrestore(&bam_ch[id].lock, flags);

	hdr = kmalloc(sizeof(struct bam_mux_hdr), GFP_KERNEL);
	if (hdr == NULL) {
		pr_err("%s: hdr kmalloc failed. ch: %d\n", __func__, id);
		return -ENOMEM;
	}
	hdr->magic_num = BAM_MUX_HDR_MAGIC_NO;
	hdr->cmd = BAM_MUX_HDR_CMD_CLOSE;
	hdr->reserved = 0;
	hdr->ch_id = id;
	hdr->pkt_len = 0;
	hdr->pad_len = 0;

	rc = bam_mux_write_cmd((void *)hdr, sizeof(struct bam_mux_hdr));

	DBG("%s: closed ch %d\n", __func__, id);
	return rc;
}