148e0b8f48
No need to support older kernel versions in the Greybus SPI and spilib driver, so remove the checks as needed, we can now rely on all of the correct SPI core apis being present. Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
80 lines
1.7 KiB
C
80 lines
1.7 KiB
C
/*
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* SPI bridge PHY driver.
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*
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* Copyright 2014-2016 Google Inc.
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* Copyright 2014-2016 Linaro Ltd.
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*
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* Released under the GPLv2 only.
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*/
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#include <linux/module.h>
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#include "greybus.h"
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#include "gbphy.h"
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#include "spilib.h"
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static struct spilib_ops *spilib_ops;
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static int gb_spi_probe(struct gbphy_device *gbphy_dev,
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const struct gbphy_device_id *id)
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{
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struct gb_connection *connection;
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int ret;
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connection = gb_connection_create(gbphy_dev->bundle,
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le16_to_cpu(gbphy_dev->cport_desc->id),
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NULL);
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if (IS_ERR(connection))
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return PTR_ERR(connection);
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ret = gb_connection_enable(connection);
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if (ret)
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goto exit_connection_destroy;
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ret = gb_spilib_master_init(connection, &gbphy_dev->dev, spilib_ops);
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if (ret)
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goto exit_connection_disable;
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gb_gbphy_set_data(gbphy_dev, connection);
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gbphy_runtime_put_autosuspend(gbphy_dev);
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return 0;
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exit_connection_disable:
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gb_connection_disable(connection);
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exit_connection_destroy:
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gb_connection_destroy(connection);
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return ret;
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}
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static void gb_spi_remove(struct gbphy_device *gbphy_dev)
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{
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struct gb_connection *connection = gb_gbphy_get_data(gbphy_dev);
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int ret;
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ret = gbphy_runtime_get_sync(gbphy_dev);
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if (ret)
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gbphy_runtime_get_noresume(gbphy_dev);
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gb_spilib_master_exit(connection);
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gb_connection_disable(connection);
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gb_connection_destroy(connection);
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}
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static const struct gbphy_device_id gb_spi_id_table[] = {
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{ GBPHY_PROTOCOL(GREYBUS_PROTOCOL_SPI) },
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{ },
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};
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MODULE_DEVICE_TABLE(gbphy, gb_spi_id_table);
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static struct gbphy_driver spi_driver = {
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.name = "spi",
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.probe = gb_spi_probe,
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.remove = gb_spi_remove,
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.id_table = gb_spi_id_table,
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};
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module_gbphy_driver(spi_driver);
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MODULE_LICENSE("GPL v2");
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