gpu/host1x/channel.c

11 #include "channel.h"
43 	struct host1x *host = dev_get_drvdata(job->channel->dev->parent);
49 struct host1x_channel *host1x_channel_get(struct host1x_channel *channel)
51 	kref_get(&channel->refcount);
53 	return channel;
58  * host1x_channel_get_index() - Attempt to get channel reference by index
60  * @index: Index of channel
62  * If channel number @index is currently allocated, increase its refcount
76 void host1x_channel_stop(struct host1x_channel *channel)
78 	struct host1x *host = dev_get_drvdata(channel->dev->parent);
80 	host1x_hw_cdma_stop(host, &channel->cdma);
105 	struct host1x_channel *channel =
107 	struct host1x *host = dev_get_drvdata(channel->dev->parent);
110 	host1x_hw_cdma_stop(host, &channel->cdma);
111 	host1x_cdma_deinit(&channel->cdma);
113 	clear_bit(channel->id, chlist->allocated_channels);
116 void host1x_channel_put(struct host1x_channel *channel)
118 	kref_put(&channel->refcount, release_channel);
133 		dev_err(host->dev, "failed to find free channel\n");
147  * host1x_channel_request() - Allocate a channel
148  * @client: Host1x client this channel will be used to send commands to
150  * Allocates a new host1x channel for @client. May return NULL if CDMA
157 	struct host1x_channel *channel;
160 	channel = acquire_unused_channel(host);
161 	if (!channel)
164 	kref_init(&channel->refcount);
165 	mutex_init(&channel->submitlock);
166 	channel->client = client;
167 	channel->dev = client->dev;
169 	err = host1x_hw_channel_init(host, channel, channel->id);
173 	err = host1x_cdma_init(&channel->cdma);
177 	return channel;
180 	clear_bit(channel->id, chlist->allocated_channels);
182 	dev_err(client->dev, "failed to initialize channel\n");