soc: qcom: smd: Support multiple channels per sdev
This patch allows chaining additional channels to a SMD device, enabling implementation of multi-channel SMD devies - like Bluetooth. Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Andy Gross <andy.gross@linaro.org>
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@ -193,6 +193,7 @@ struct qcom_smd_channel {
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int pkt_size;
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struct list_head list;
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struct list_head dev_list;
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};
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/**
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@ -887,6 +888,8 @@ static int qcom_smd_dev_remove(struct device *dev)
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struct qcom_smd_device *qsdev = to_smd_device(dev);
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struct qcom_smd_driver *qsdrv = to_smd_driver(dev);
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struct qcom_smd_channel *channel = qsdev->channel;
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struct qcom_smd_channel *tmp;
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struct qcom_smd_channel *ch;
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qcom_smd_channel_set_state(channel, SMD_CHANNEL_CLOSING);
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@ -906,10 +909,14 @@ static int qcom_smd_dev_remove(struct device *dev)
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qsdrv->remove(qsdev);
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/*
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* The client is now gone, cleanup and reset the channel state.
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* The client is now gone, close and release all channels associated
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* with this sdev
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*/
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channel->qsdev = NULL;
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qcom_smd_channel_close(channel);
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list_for_each_entry_safe(ch, tmp, &channel->dev_list, dev_list) {
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qcom_smd_channel_close(ch);
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list_del(&ch->dev_list);
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ch->qsdev = NULL;
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}
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return 0;
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}
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@ -1056,6 +1063,7 @@ static struct qcom_smd_channel *qcom_smd_create_channel(struct qcom_smd_edge *ed
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if (!channel)
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return ERR_PTR(-ENOMEM);
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INIT_LIST_HEAD(&channel->dev_list);
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channel->edge = edge;
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channel->name = devm_kstrdup(smd->dev, name, GFP_KERNEL);
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if (!channel->name)
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