14  * processor core to offload the work.
28 #include <linux/spi/offload/consumer.h>
29 #include <linux/spi/offload/provider.h>
30 #include <linux/spi/offload/types.h>
36 	struct spi_offload *offload;  member
57  * devm_spi_offload_alloc() - Allocate offload instance
61  * Offload providers should use this to allocate offload instances.
63  * Return: Pointer to new offload instance or error on failure.
68 	struct spi_offload *offload;  in devm_spi_offload_alloc()  local
71 	offload = devm_kzalloc(dev, sizeof(*offload), GFP_KERNEL);  in devm_spi_offload_alloc()
72 	if (!offload)  in devm_spi_offload_alloc()
79 	offload->provider_dev = dev;  in devm_spi_offload_alloc()
80 	offload->priv = priv;  in devm_spi_offload_alloc()
82 	return offload;  in devm_spi_offload_alloc()
90 	resource->controller->put_offload(resource->offload);  in spi_offload_put()
95  * devm_spi_offload_get() - Get an offload instance
98  * @config: Offload configuration
100  * Peripheral drivers call this function to get an offload instance that meets
101  * the requirements specified in @config. If no suitable offload instance is
104  * Return: Offload instance or error on failure.
111 	struct spi_offload *offload;  in devm_spi_offload_get()  local
124 	offload = spi->controller->get_offload(spi, config);  in devm_spi_offload_get()
125 	if (IS_ERR(offload)) {  in devm_spi_offload_get()
127 		return offload;  in devm_spi_offload_get()
131 	resource->offload = offload;  in devm_spi_offload_get()
137 	return offload;  in devm_spi_offload_get()
201  * devm_spi_offload_trigger_get() - Get an offload trigger instance
203  * @offload: Offload instance connected to a trigger.
206  * Return: Offload trigger instance or error on failure.
210 			      struct spi_offload *offload,  in devm_spi_offload_trigger_get()  argument
217 	ret = fwnode_property_get_reference_args(dev_fwnode(offload->provider_dev),  in devm_spi_offload_trigger_get()
239  * @trigger: Offload trigger instance
267  * spi_offload_trigger_enable - enables trigger for offload
268  * @offload: Offload instance
269  * @trigger: Offload trigger instance
272  * There must be a prepared offload instance with the specified ID (i.e.
273  * spi_optimize_message() was called with the same offload assigned to the
274  * message). This will also reserve the bus for exclusive use by the offload
283 int spi_offload_trigger_enable(struct spi_offload *offload,  in spi_offload_trigger_enable()  argument
294 	if (offload->ops && offload->ops->trigger_enable) {  in spi_offload_trigger_enable()
295 		ret = offload->ops->trigger_enable(offload);  in spi_offload_trigger_enable()
303 			if (offload->ops->trigger_disable)  in spi_offload_trigger_enable()
304 				offload->ops->trigger_disable(offload);  in spi_offload_trigger_enable()
314  * spi_offload_trigger_disable - disables hardware trigger for offload
315  * @offload: Offload instance
316  * @trigger: Offload trigger instance
318  * Disables the hardware trigger for the offload instance with the specified ID
323 void spi_offload_trigger_disable(struct spi_offload *offload,  in spi_offload_trigger_disable()  argument
326 	if (offload->ops && offload->ops->trigger_disable)  in spi_offload_trigger_disable()
327 		offload->ops->trigger_disable(offload);  in spi_offload_trigger_disable()
347  * @offload: Offload instance
350  * %SPI_OFFLOAD_XFER_TX_STREAM offload flag.
356 					     struct spi_offload *offload)  in devm_spi_offload_tx_stream_request_dma_chan()  argument
361 	if (!offload->ops || !offload->ops->tx_stream_request_dma_chan)  in devm_spi_offload_tx_stream_request_dma_chan()
364 	chan = offload->ops->tx_stream_request_dma_chan(offload);  in devm_spi_offload_tx_stream_request_dma_chan()
379  * @offload: Offload instance
382  * %SPI_OFFLOAD_XFER_RX_STREAM offload flag.
388 					     struct spi_offload *offload)  in devm_spi_offload_rx_stream_request_dma_chan()  argument
393 	if (!offload->ops || !offload->ops->rx_stream_request_dma_chan)  in devm_spi_offload_rx_stream_request_dma_chan()
396 	chan = offload->ops->rx_stream_request_dma_chan(offload);  in devm_spi_offload_rx_stream_request_dma_chan()
426  * devm_spi_offload_trigger_register() - Allocate and register an offload trigger
460  * @trigger: Offload trigger instance.