[linux.git] / drivers / soundwire / cadence_master.h

// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
// Copyright(c) 2015-17 Intel Corporation.
#include <sound/soc.h>

#ifndef __SDW_CADENCE_H
#define __SDW_CADENCE_H

/**
 * struct sdw_cdns_pdi: PDI (Physical Data Interface) instance
 *
 * @assigned: pdi assigned
 * @num: pdi number
 * @intel_alh_id: link identifier
 * @l_ch_num: low channel for PDI
 * @h_ch_num: high channel for PDI
 * @ch_count: total channel count for PDI
 * @dir: data direction
 * @type: stream type, PDM or PCM
 */
struct sdw_cdns_pdi {
	bool assigned;
	int num;
	int intel_alh_id;
	int l_ch_num;
	int h_ch_num;
	int ch_count;
	enum sdw_data_direction dir;
	enum sdw_stream_type type;
};

/**
 * struct sdw_cdns_port: Cadence port structure
 *
 * @num: port number
 * @assigned: port assigned
 * @ch: channel count
 * @direction: data port direction
 * @pdi: pdi for this port
 */
struct sdw_cdns_port {
	unsigned int num;
	bool assigned;
	unsigned int ch;
	enum sdw_data_direction direction;
	struct sdw_cdns_pdi *pdi;
};

/**
 * struct sdw_cdns_streams: Cadence stream data structure
 *
 * @num_bd: number of bidirectional streams
 * @num_in: number of input streams
 * @num_out: number of output streams
 * @num_ch_bd: number of bidirectional stream channels
 * @num_ch_bd: number of input stream channels
 * @num_ch_bd: number of output stream channels
 * @num_pdi: total number of PDIs
 * @bd: bidirectional streams
 * @in: input streams
 * @out: output streams
 */
struct sdw_cdns_streams {
	unsigned int num_bd;
	unsigned int num_in;
	unsigned int num_out;
	unsigned int num_ch_bd;
	unsigned int num_ch_in;
	unsigned int num_ch_out;
	unsigned int num_pdi;
	struct sdw_cdns_pdi *bd;
	struct sdw_cdns_pdi *in;
	struct sdw_cdns_pdi *out;
};

/**
 * struct sdw_cdns_stream_config: stream configuration
 *
 * @pcm_bd: number of bidirectional PCM streams supported
 * @pcm_in: number of input PCM streams supported
 * @pcm_out: number of output PCM streams supported
 * @pdm_bd: number of bidirectional PDM streams supported
 * @pdm_in: number of input PDM streams supported
 * @pdm_out: number of output PDM streams supported
 */
struct sdw_cdns_stream_config {
	unsigned int pcm_bd;
	unsigned int pcm_in;
	unsigned int pcm_out;
	unsigned int pdm_bd;
	unsigned int pdm_in;
	unsigned int pdm_out;
};

/**
 * struct sdw_cdns_dma_data: Cadence DMA data
 *
 * @name: SoundWire stream name
 * @nr_ports: Number of ports
 * @port: Ports
 * @bus: Bus handle
 * @stream_type: Stream type
 * @link_id: Master link id
 */
struct sdw_cdns_dma_data {
	char *name;
	struct sdw_stream_runtime *stream;
	int nr_ports;
	struct sdw_cdns_port **port;
	struct sdw_bus *bus;
	enum sdw_stream_type stream_type;
	int link_id;
};

/**
 * 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
 * @ports: Data ports
 * @num_ports: Total number of data ports
 * @pcm: PCM streams
 * @pdm: PDM streams
 * @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;

	struct sdw_cdns_port *ports;
	int num_ports;

	struct sdw_cdns_streams pcm;
	struct sdw_cdns_streams pdm;

	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_pdi_init(struct sdw_cdns *cdns,
			struct sdw_cdns_stream_config config);
int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns);

int sdw_cdns_get_stream(struct sdw_cdns *cdns,
			struct sdw_cdns_streams *stream,
			u32 ch, u32 dir);
int sdw_cdns_alloc_stream(struct sdw_cdns *cdns,
			struct sdw_cdns_streams *stream,
			struct sdw_cdns_port *port, u32 ch, u32 dir);
void sdw_cdns_config_stream(struct sdw_cdns *cdns, struct sdw_cdns_port *port,
			u32 ch, u32 dir, struct sdw_cdns_pdi *pdi);

void sdw_cdns_shutdown(struct snd_pcm_substream *substream,
				struct snd_soc_dai *dai);
int sdw_cdns_pcm_set_stream(struct snd_soc_dai *dai,
				void *stream, int direction);
int sdw_cdns_pdm_set_stream(struct snd_soc_dai *dai,
				void *stream, int direction);

enum sdw_command_response
cdns_reset_page_addr(struct sdw_bus *bus, unsigned int dev_num);

enum sdw_command_response
cdns_xfer_msg(struct sdw_bus *bus, struct sdw_msg *msg);

enum sdw_command_response
cdns_xfer_msg_defer(struct sdw_bus *bus,
		struct sdw_msg *msg, struct sdw_defer *defer);

enum sdw_command_response
cdns_reset_page_addr(struct sdw_bus *bus, unsigned int dev_num);

int cdns_bus_conf(struct sdw_bus *bus, struct sdw_bus_params *params);

int cdns_set_sdw_stream(struct snd_soc_dai *dai,
		void *stream, bool pcm, int direction);
#endif /* __SDW_CADENCE_H */
Commit	Line	Data
2f52a517 VK	1	// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
2f52a517 VK	2	// Copyright(c) 2015-17 Intel Corporation.
5d6b3c8b	3	#include <sound/soc.h>
2f52a517 VK	4
	5	#ifndef __SDW_CADENCE_H
	6	#define __SDW_CADENCE_H
	7
07abeff1 VK	8	/**
	9	* struct sdw_cdns_pdi: PDI (Physical Data Interface) instance
	10	*
	11	* @assigned: pdi assigned
	12	* @num: pdi number
	13	* @intel_alh_id: link identifier
	14	* @l_ch_num: low channel for PDI
	15	* @h_ch_num: high channel for PDI
	16	* @ch_count: total channel count for PDI
	17	* @dir: data direction
	18	* @type: stream type, PDM or PCM
	19	*/
	20	struct sdw_cdns_pdi {
	21	bool assigned;
	22	int num;
	23	int intel_alh_id;
	24	int l_ch_num;
	25	int h_ch_num;
	26	int ch_count;
	27	enum sdw_data_direction dir;
	28	enum sdw_stream_type type;
	29	};
	30
	31	/**
	32	* struct sdw_cdns_port: Cadence port structure
	33	*
	34	* @num: port number
	35	* @assigned: port assigned
	36	* @ch: channel count
	37	* @direction: data port direction
	38	* @pdi: pdi for this port
	39	*/
	40	struct sdw_cdns_port {
	41	unsigned int num;
	42	bool assigned;
	43	unsigned int ch;
	44	enum sdw_data_direction direction;
	45	struct sdw_cdns_pdi *pdi;
	46	};
	47
	48	/**
	49	* struct sdw_cdns_streams: Cadence stream data structure
	50	*
	51	* @num_bd: number of bidirectional streams
	52	* @num_in: number of input streams
	53	* @num_out: number of output streams
	54	* @num_ch_bd: number of bidirectional stream channels
	55	* @num_ch_bd: number of input stream channels
	56	* @num_ch_bd: number of output stream channels
	57	* @num_pdi: total number of PDIs
	58	* @bd: bidirectional streams
	59	* @in: input streams
	60	* @out: output streams
	61	*/
	62	struct sdw_cdns_streams {
	63	unsigned int num_bd;
	64	unsigned int num_in;
	65	unsigned int num_out;
	66	unsigned int num_ch_bd;
	67	unsigned int num_ch_in;
	68	unsigned int num_ch_out;
	69	unsigned int num_pdi;
	70	struct sdw_cdns_pdi *bd;
	71	struct sdw_cdns_pdi *in;
72	struct sdw_cdns_pdi *out;
73	};
74
75	/**
76	* struct sdw_cdns_stream_config: stream configuration
77	*
78	* @pcm_bd: number of bidirectional PCM streams supported
79	* @pcm_in: number of input PCM streams supported
80	* @pcm_out: number of output PCM streams supported
81	* @pdm_bd: number of bidirectional PDM streams supported
82	* @pdm_in: number of input PDM streams supported
83	* @pdm_out: number of output PDM streams supported
84	*/
85	struct sdw_cdns_stream_config {
86	unsigned int pcm_bd;
87	unsigned int pcm_in;
88	unsigned int pcm_out;
89	unsigned int pdm_bd;
90	unsigned int pdm_in;
91	unsigned int pdm_out;
92	};
93
5d6b3c8b VK	94	/**
	95	* struct sdw_cdns_dma_data: Cadence DMA data
	96	*
	97	* @name: SoundWire stream name
	98	* @nr_ports: Number of ports
	99	* @port: Ports
	100	* @bus: Bus handle
	101	* @stream_type: Stream type
	102	* @link_id: Master link id
	103	*/
	104	struct sdw_cdns_dma_data {
	105	char *name;
	106	struct sdw_stream_runtime *stream;
	107	int nr_ports;
	108	struct sdw_cdns_port **port;
	109	struct sdw_bus *bus;
	110	enum sdw_stream_type stream_type;
	111	int link_id;
	112	};
	113
2f52a517 VK	114	/**
	115	* struct sdw_cdns - Cadence driver context
	116	* @dev: Linux device
	117	* @bus: Bus handle
	118	* @instance: instance number
956baa19 SK	119	* @response_buf: SoundWire response buffer
	120	* @tx_complete: Tx completion
	121	* @defer: Defer pointer
07abeff1 VK	122	* @ports: Data ports
	123	* @num_ports: Total number of data ports
	124	* @pcm: PCM streams
	125	* @pdm: PDM streams
2f52a517 VK	126	* @registers: Cadence registers
2f52a517 VK	127	* @link_up: Link status
956baa19	128	* @msg_count: Messages sent on bus
2f52a517 VK	129	*/
	130	struct sdw_cdns {
	131	struct device *dev;
	132	struct sdw_bus bus;
	133	unsigned int instance;
	134
956baa19 SK	135	u32 response_buf[0x80];
	136	struct completion tx_complete;
	137	struct sdw_defer *defer;
	138
07abeff1 VK	139	struct sdw_cdns_port *ports;
	140	int num_ports;
	141
	142	struct sdw_cdns_streams pcm;
	143	struct sdw_cdns_streams pdm;
	144
2f52a517 VK	145	void __iomem *registers;
	146
	147	bool link_up;
956baa19	148	unsigned int msg_count;
2f52a517 VK	149	};
	150
	151	#define bus_to_cdns(_bus) container_of(_bus, struct sdw_cdns, bus)
	152
	153	/* Exported symbols */
	154
956baa19 SK	155	int sdw_cdns_probe(struct sdw_cdns *cdns);
	156	extern struct sdw_master_ops sdw_cdns_master_ops;
	157
2f52a517 VK	158	irqreturn_t sdw_cdns_irq(int irq, void *dev_id);
	159	irqreturn_t sdw_cdns_thread(int irq, void *dev_id);
	160
	161	int sdw_cdns_init(struct sdw_cdns *cdns);
07abeff1 VK	162	int sdw_cdns_pdi_init(struct sdw_cdns *cdns,
07abeff1 VK	163	struct sdw_cdns_stream_config config);
956baa19 SK	164	int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns);
956baa19 SK	165
5d6b3c8b VK	166	int sdw_cdns_get_stream(struct sdw_cdns *cdns,
	167	struct sdw_cdns_streams *stream,
	168	u32 ch, u32 dir);
	169	int sdw_cdns_alloc_stream(struct sdw_cdns *cdns,
	170	struct sdw_cdns_streams *stream,
	171	struct sdw_cdns_port *port, u32 ch, u32 dir);
	172	void sdw_cdns_config_stream(struct sdw_cdns cdns, struct sdw_cdns_port port,
	173	u32 ch, u32 dir, struct sdw_cdns_pdi *pdi);
	174
	175	void sdw_cdns_shutdown(struct snd_pcm_substream *substream,
	176	struct snd_soc_dai *dai);
	177	int sdw_cdns_pcm_set_stream(struct snd_soc_dai *dai,
	178	void *stream, int direction);
	179	int sdw_cdns_pdm_set_stream(struct snd_soc_dai *dai,
	180	void *stream, int direction);
	181
	182	enum sdw_command_response
	183	cdns_reset_page_addr(struct sdw_bus *bus, unsigned int dev_num);
	184
c91605f4 SN	185	enum sdw_command_response
c91605f4 SN	186	cdns_xfer_msg(struct sdw_bus bus, struct sdw_msg msg);
2f52a517	187
c91605f4 SN	188	enum sdw_command_response
	189	cdns_xfer_msg_defer(struct sdw_bus *bus,
	190	struct sdw_msg msg, struct sdw_defer defer);
	191
	192	enum sdw_command_response
	193	cdns_reset_page_addr(struct sdw_bus *bus, unsigned int dev_num);
07abeff1 VK	194
07abeff1 VK	195	int cdns_bus_conf(struct sdw_bus bus, struct sdw_bus_params params);
5d6b3c8b VK	196
	197	int cdns_set_sdw_stream(struct snd_soc_dai *dai,
	198	void *stream, bool pcm, int direction);
2f52a517	199	#endif /* __SDW_CADENCE_H */