On 8 June 2015 at 16:09, Sudeep Holla <[email protected]> wrote:
...
> +
> +static void scpi_process_cmd(struct scpi_chan *ch, u32 cmd)
> +{
> + unsigned long flags;
> + struct scpi_xfer *t, *match = NULL;
> +
> + spin_lock_irqsave(&ch->rx_lock, flags);
> + if (list_empty(&ch->rx_pending)) {
> + spin_unlock_irqrestore(&ch->rx_lock, flags);
> + return;
> + }
> +
> + list_for_each_entry(t, &ch->rx_pending, node)
> + if (CMD_XTRACT_UNIQ(t->cmd) == CMD_XTRACT_UNIQ(cmd)) {
> + list_del(&t->node);
> + match = t;
> + break;
> + }
> + /* check if wait_for_completion is in progress or timed-out */
> + if (match && !completion_done(&match->done)) {
> + struct scpi_shared_mem *mem = ch->rx_payload;
> + unsigned int len = min(match->rx_len, CMD_SIZE(cmd));
> +
> + match->status = le32_to_cpu(mem->status);
> + memcpy_fromio(match->rx_buf, mem->payload, len);
> + if (match->rx_len > len)
> + memset(match->rx_buf + len, 0, match->rx_len - len);
> + complete(&match->done);
> + }
> + spin_unlock_irqrestore(&ch->rx_lock, flags);
> +}
There doesn't seem to be support for commands sent by remote?
Something like when remote is the thermal master and it needs to send
sensor readings crossing thresholds.
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