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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>
This commit is contained in:
Bjorn Andersson 2016-02-17 22:39:05 -08:00 committed by Andy Gross
parent 3fd3f2fd86
commit d5933855c0
1 changed files with 11 additions and 3 deletions
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14
drivers/soc/qcom/smd.c
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@ -193,6 +193,7 @@ struct qcom_smd_channel {
int pkt_size;
struct list_head list;
struct list_head dev_list;
};
/**
@ -887,6 +888,8 @@ static int qcom_smd_dev_remove(struct device *dev)
struct qcom_smd_device *qsdev = to_smd_device(dev);
struct qcom_smd_driver *qsdrv = to_smd_driver(dev);
struct qcom_smd_channel *channel = qsdev->channel;
struct qcom_smd_channel *tmp;
struct qcom_smd_channel *ch;
qcom_smd_channel_set_state(channel, SMD_CHANNEL_CLOSING);
@ -906,10 +909,14 @@ static int qcom_smd_dev_remove(struct device *dev)
qsdrv->remove(qsdev);
/*
* The client is now gone, cleanup and reset the channel state.
* The client is now gone, close and release all channels associated
* with this sdev
*/
channel->qsdev = NULL;
qcom_smd_channel_close(channel);
list_for_each_entry_safe(ch, tmp, &channel->dev_list, dev_list) {
qcom_smd_channel_close(ch);
list_del(&ch->dev_list);
ch->qsdev = NULL;
}
return 0;
}
@ -1056,6 +1063,7 @@ static struct qcom_smd_channel *qcom_smd_create_channel(struct qcom_smd_edge *ed
if (!channel)
return ERR_PTR(-ENOMEM);
INIT_LIST_HEAD(&channel->dev_list);
channel->edge = edge;
channel->name = devm_kstrdup(smd->dev, name, GFP_KERNEL);
if (!channel->name)