diff options
Diffstat (limited to 'drivers/soundwire/cadence_master.h')
| -rw-r--r-- | drivers/soundwire/cadence_master.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/soundwire/cadence_master.h b/drivers/soundwire/cadence_master.h new file mode 100644 index 000000000000..beaf6c9804eb --- /dev/null +++ b/drivers/soundwire/cadence_master.h @@ -0,0 +1,48 @@ +// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) +// Copyright(c) 2015-17 Intel Corporation. + +#ifndef __SDW_CADENCE_H +#define __SDW_CADENCE_H + +/** + * struct sdw_cdns - Cadence driver context + * @dev: Linux device + * @bus: Bus handle + * @instance: instance number + * @response_buf: SoundWire response buffer + * @tx_complete: Tx completion + * @defer: Defer pointer + * @registers: Cadence registers + * @link_up: Link status + * @msg_count: Messages sent on bus + */ +struct sdw_cdns { + struct device *dev; + struct sdw_bus bus; + unsigned int instance; + + u32 response_buf[0x80]; + struct completion tx_complete; + struct sdw_defer *defer; + + void __iomem *registers; + + bool link_up; + unsigned int msg_count; +}; + +#define bus_to_cdns(_bus) container_of(_bus, struct sdw_cdns, bus) + +/* Exported symbols */ + +int sdw_cdns_probe(struct sdw_cdns *cdns); +extern struct sdw_master_ops sdw_cdns_master_ops; + +irqreturn_t sdw_cdns_irq(int irq, void *dev_id); +irqreturn_t sdw_cdns_thread(int irq, void *dev_id); + +int sdw_cdns_init(struct sdw_cdns *cdns); +int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns); + + +#endif /* __SDW_CADENCE_H */ |