debug lk

hc

2024-02-20 e636c8d336489bf3eed5878299e6cc045bbad077

 kernel/drivers/soundwire/cadence_master.h
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@@ -1,14 +1,22 @@
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-// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
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-// Copyright(c) 2015-17 Intel Corporation.
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+/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
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+/* Copyright(c) 2015-17 Intel Corporation. */
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 #include <sound/soc.h>
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 #ifndef __SDW_CADENCE_H
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 #define __SDW_CADENCE_H
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+#define SDW_CADENCE_GSYNC_KHZ		4 /* 4 kHz */
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+#define SDW_CADENCE_GSYNC_HZ		(SDW_CADENCE_GSYNC_KHZ * 1000)
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+
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+/*
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+ * The Cadence IP supports up to 32 entries in the FIFO, though implementations
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+ * can configure the IP to have a smaller FIFO.
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+ */
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+#define CDNS_MCP_IP_MAX_CMD_LEN		32
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+
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 /**
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  * struct sdw_cdns_pdi: PDI (Physical Data Interface) instance
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  *
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- * @assigned: pdi assigned
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  * @num: pdi number
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  * @intel_alh_id: link identifier
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  * @l_ch_num: low channel for PDI
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@@ -18,7 +26,6 @@
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  * @type: stream type, PDM or PCM
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  */
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 struct sdw_cdns_pdi {
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-	bool assigned;
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 	int num;
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 	int intel_alh_id;
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 	int l_ch_num;
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@@ -26,23 +33,6 @@
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 	int ch_count;
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 	enum sdw_data_direction dir;
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 	enum sdw_stream_type type;
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-};
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-
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-/**
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- * struct sdw_cdns_port: Cadence port structure
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- *
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- * @num: port number
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- * @assigned: port assigned
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- * @ch: channel count
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- * @direction: data port direction
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- * @pdi: pdi for this port
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- */
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-struct sdw_cdns_port {
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-	unsigned int num;
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-	bool assigned;
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-	unsigned int ch;
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-	enum sdw_data_direction direction;
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-	struct sdw_cdns_pdi *pdi;
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 };
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 /**
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@@ -95,20 +85,23 @@
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  * struct sdw_cdns_dma_data: Cadence DMA data
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  *
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  * @name: SoundWire stream name
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- * @nr_ports: Number of ports
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- * @port: Ports
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+ * @stream: stream runtime
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+ * @pdi: PDI used for this dai
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  * @bus: Bus handle
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  * @stream_type: Stream type
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  * @link_id: Master link id
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+ * @hw_params: hw_params to be applied in .prepare step
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+ * @suspended: status set when suspended, to be used in .prepare
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  */
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 struct sdw_cdns_dma_data {
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 	char *name;
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 	struct sdw_stream_runtime *stream;
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-	int nr_ports;
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-	struct sdw_cdns_port **port;
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+	struct sdw_cdns_pdi *pdi;
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 	struct sdw_bus *bus;
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 	enum sdw_stream_type stream_type;
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 	int link_id;
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+	struct snd_pcm_hw_params *hw_params;
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+	bool suspended;
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 };
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 /**
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@@ -132,7 +125,12 @@
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 	struct sdw_bus bus;
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 	unsigned int instance;
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-	u32 response_buf[0x80];
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+	/*
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+	 * The datasheet says the RX FIFO AVAIL can be 2 entries more
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+	 * than the FIFO capacity, so allow for this.
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+	 */
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+	u32 response_buf[CDNS_MCP_IP_MAX_CMD_LEN + 2];
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+
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 	struct completion tx_complete;
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 	struct sdw_defer *defer;
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@@ -146,6 +144,11 @@
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 	bool link_up;
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 	unsigned int msg_count;
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+	bool interrupt_enabled;
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+
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+	struct work_struct work;
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+
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+	struct list_head list;
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 };
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 #define bus_to_cdns(_bus) container_of(_bus, struct sdw_cdns, bus)
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@@ -160,24 +163,23 @@
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 int sdw_cdns_init(struct sdw_cdns *cdns);
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 int sdw_cdns_pdi_init(struct sdw_cdns *cdns,
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-			struct sdw_cdns_stream_config config);
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-int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns);
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+		      struct sdw_cdns_stream_config config);
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+int sdw_cdns_exit_reset(struct sdw_cdns *cdns);
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+int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns, bool state);
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-int sdw_cdns_get_stream(struct sdw_cdns *cdns,
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-			struct sdw_cdns_streams *stream,
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-			u32 ch, u32 dir);
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-int sdw_cdns_alloc_stream(struct sdw_cdns *cdns,
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-			struct sdw_cdns_streams *stream,
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-			struct sdw_cdns_port *port, u32 ch, u32 dir);
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-void sdw_cdns_config_stream(struct sdw_cdns *cdns, struct sdw_cdns_port *port,
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-			u32 ch, u32 dir, struct sdw_cdns_pdi *pdi);
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+bool sdw_cdns_is_clock_stop(struct sdw_cdns *cdns);
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+int sdw_cdns_clock_stop(struct sdw_cdns *cdns, bool block_wake);
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+int sdw_cdns_clock_restart(struct sdw_cdns *cdns, bool bus_reset);
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-void sdw_cdns_shutdown(struct snd_pcm_substream *substream,
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-				struct snd_soc_dai *dai);
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-int sdw_cdns_pcm_set_stream(struct snd_soc_dai *dai,
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-				void *stream, int direction);
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-int sdw_cdns_pdm_set_stream(struct snd_soc_dai *dai,
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-				void *stream, int direction);
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+#ifdef CONFIG_DEBUG_FS
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+void sdw_cdns_debugfs_init(struct sdw_cdns *cdns, struct dentry *root);
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+#endif
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+
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+struct sdw_cdns_pdi *sdw_cdns_alloc_pdi(struct sdw_cdns *cdns,
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+					struct sdw_cdns_streams *stream,
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+					u32 ch, u32 dir, int dai_id);
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+void sdw_cdns_config_stream(struct sdw_cdns *cdns,
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+			    u32 ch, u32 dir, struct sdw_cdns_pdi *pdi);
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 enum sdw_command_response
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 cdns_reset_page_addr(struct sdw_bus *bus, unsigned int dev_num);
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@@ -187,7 +189,7 @@
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 enum sdw_command_response
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 cdns_xfer_msg_defer(struct sdw_bus *bus,
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-		struct sdw_msg *msg, struct sdw_defer *defer);
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+		    struct sdw_msg *msg, struct sdw_defer *defer);
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 enum sdw_command_response
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 cdns_reset_page_addr(struct sdw_bus *bus, unsigned int dev_num);
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@@ -195,5 +197,5 @@
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 int cdns_bus_conf(struct sdw_bus *bus, struct sdw_bus_params *params);
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 int cdns_set_sdw_stream(struct snd_soc_dai *dai,
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-		void *stream, bool pcm, int direction);
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+			void *stream, bool pcm, int direction);
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 #endif /* __SDW_CADENCE_H */