linux/drivers/soundwire/cadence_master.h
Sanyog Kale 956baa1992 soundwire: cdns: Add sdw_master_ops and IO transfer support
Implement sdw_master_ops with support for xfer_msg, xfer_msg_defer
and reset_page_addr. Since Cadence module doesn't know the systems
it will be used, set the read_prop to the bus helper.

Signed-off-by: Hardik T Shah <hardik.t.shah@intel.com>
Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Acked-By: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-19 11:31:33 +01:00

49 lines
1.1 KiB
C

// 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 */