ASoC: qdsp6: audioreach: add q6apm support

Add support to q6apm (Audio Process Manager) component which is
core Audioreach service running in the DSP.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20211026111655.1702-11-srinivas.kandagatla@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/qcom/qdsp6/audioreach.h

@@ -5,6 +5,8 @@
 #include <linux/types.h>
 #include <linux/soc/qcom/apr.h>
 #include <sound/soc.h>
+struct q6apm;
+struct q6apm_graph;
 
 /* Module IDs */
 #define MODULE_ID_WR_SHARED_MEM_EP	0x07001000
@@ -654,6 +656,20 @@ struct audioreach_module {
 	struct snd_soc_dapm_widget *widget;
 };
 
+struct audioreach_module_config {
+	int	direction;
+	u32	sample_rate;
+	u16	bit_width;
+	u16	bits_per_sample;
+
+	u16	data_format;
+	u16	num_channels;
+	u16	active_channels_mask;
+	u32	sd_line_mask;
+	int	fmt;
+	u8 channel_map[AR_PCM_MAX_NUM_CHANNEL];
+};
+
 /* Packet Allocation routines */
 void *audioreach_alloc_apm_cmd_pkt(int pkt_size, uint32_t opcode, uint32_t
 				    token);
@@ -665,4 +681,17 @@ void *audioreach_alloc_apm_pkt(int pkt_size, uint32_t opcode, uint32_t token,
 void *audioreach_alloc_pkt(int payload_size, uint32_t opcode,
 			   uint32_t token, uint32_t src_port,
 			   uint32_t dest_port);
+void *audioreach_alloc_graph_pkt(struct q6apm *apm,
+				 struct list_head *sg_list,
+				  int graph_id);
+struct audioreach_module *audioreach_get_container_last_module(
+				struct audioreach_container *container);
+struct audioreach_module *audioreach_get_container_first_module(
+				struct audioreach_container *container);
+struct audioreach_module *audioreach_get_container_next_module(
+				struct audioreach_container *container,
+				struct audioreach_module *module);
+#define list_for_each_container_module(mod, cont) \
+	for (mod = audioreach_get_container_first_module(cont); mod != NULL; \
+	     mod = audioreach_get_container_next_module(cont, mod))
 #endif /* __AUDIOREACH_H__ */

sound/soc/qcom/qdsp6/q6apm.h

+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __Q6APM_H__
+#define __Q6APM_H__
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/wait.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/of.h>
+#include <linux/delay.h>
+#include <sound/soc.h>
+#include <linux/of_platform.h>
+#include <linux/jiffies.h>
+#include <linux/soc/qcom/apr.h>
+#include <dt-bindings/sound/qcom,q6dsp-lpass-ports.h>
+#include "audioreach.h"
+
+#define APM_PORT_MAX		127
+#define APM_PORT_MAX_AUDIO_CHAN_CNT 8
+#define PCM_CHANNEL_NULL 0
+#define PCM_CHANNEL_FL    1	/* Front left channel. */
+#define PCM_CHANNEL_FR    2	/* Front right channel. */
+#define PCM_CHANNEL_FC    3	/* Front center channel. */
+#define PCM_CHANNEL_LS   4	/* Left surround channel. */
+#define PCM_CHANNEL_RS   5	/* Right surround channel. */
+#define PCM_CHANNEL_LFE  6	/* Low frequency effect channel. */
+#define PCM_CHANNEL_CS   7	/* Center surround channel; Rear center ch */
+#define PCM_CHANNEL_LB   8	/* Left back channel; Rear left channel. */
+#define PCM_CHANNEL_RB   9	/* Right back channel; Rear right channel. */
+#define PCM_CHANNELS   10	/* Top surround channel. */
+
+#define APM_TIMESTAMP_FLAG	0x80000000
+#define FORMAT_LINEAR_PCM	0x0000
+/* APM client callback events */
+#define APM_CMD_EOS				0x0003
+#define APM_CLIENT_EVENT_CMD_EOS_DONE		0x1003
+#define APM_CMD_CLOSE				0x0004
+#define APM_CLIENT_EVENT_CMD_CLOSE_DONE		0x1004
+#define APM_CLIENT_EVENT_CMD_RUN_DONE		0x1008
+#define APM_CLIENT_EVENT_DATA_WRITE_DONE	0x1009
+#define APM_CLIENT_EVENT_DATA_READ_DONE		0x100a
+#define APM_WRITE_TOKEN_MASK                   GENMASK(15, 0)
+#define APM_WRITE_TOKEN_LEN_MASK               GENMASK(31, 16)
+#define APM_WRITE_TOKEN_LEN_SHIFT              16
+
+#define APM_MAX_SESSIONS			8
+
+struct q6apm {
+	struct device *dev;
+	gpr_port_t *port;
+	gpr_device_t *gdev;
+	/* For Graph OPEN/START/STOP/CLOSE operations */
+	wait_queue_head_t wait;
+	struct gpr_ibasic_rsp_result_t result;
+
+	struct mutex cmd_lock;
+	struct mutex lock;
+	uint32_t state;
+
+	struct idr graph_idr;
+	struct idr graph_info_idr;
+	struct idr sub_graphs_idr;
+	struct idr containers_idr;
+	struct idr modules_idr;
+};
+
+struct audio_buffer {
+	phys_addr_t phys;
+	uint32_t size;		/* size of buffer */
+};
+
+struct audioreach_graph_data {
+	struct audio_buffer *buf;
+	uint32_t num_periods;
+	uint32_t dsp_buf;
+	uint32_t mem_map_handle;
+};
+
+struct audioreach_graph {
+	struct audioreach_graph_info *info;
+	uint32_t id;
+	int state;
+	int start_count;
+	/* Cached Graph data */
+	void *graph;
+	struct kref refcount;
+	struct q6apm *apm;
+};
+
+typedef void (*q6apm_cb) (uint32_t opcode, uint32_t token,
+			  void *payload, void *priv);
+struct q6apm_graph {
+	void *priv;
+	q6apm_cb cb;
+	uint32_t id;
+	struct device *dev;
+	struct q6apm *apm;
+	gpr_port_t *port;
+	struct audioreach_graph_data rx_data;
+	struct audioreach_graph_data tx_data;
+	struct gpr_ibasic_rsp_result_t result;
+	wait_queue_head_t cmd_wait;
+	struct mutex lock;
+	struct audioreach_graph *ar_graph;
+	struct audioreach_graph_info *info;
+};
+
+/* Graph Operations */
+struct q6apm_graph *q6apm_graph_open(struct device *dev, q6apm_cb cb,
+				     void *priv, int graph_id);
+int q6apm_graph_close(struct q6apm_graph *graph);
+int q6apm_graph_prepare(struct q6apm_graph *graph);
+int q6apm_graph_start(struct q6apm_graph *graph);
+int q6apm_graph_stop(struct q6apm_graph *graph);
+int q6apm_graph_flush(struct q6apm_graph *graph);
+
+/* Media Format */
+int q6apm_graph_media_format_pcm(struct q6apm_graph *graph,
+				 struct audioreach_module_config *cfg);
+
+int q6apm_graph_media_format_shmem(struct q6apm_graph *graph,
+				   struct audioreach_module_config *cfg);
+
+/* read/write related */
+int q6apm_send_eos_nowait(struct q6apm_graph *graph);
+int q6apm_read(struct q6apm_graph *graph);
+int q6apm_write_async(struct q6apm_graph *graph, uint32_t len, uint32_t msw_ts,
+		      uint32_t lsw_ts, uint32_t wflags);
+
+/* Memory Map related */
+int q6apm_map_memory_regions(struct q6apm_graph *graph,
+			     unsigned int dir, phys_addr_t phys,
+			     size_t period_sz, unsigned int periods);
+int q6apm_unmap_memory_regions(struct q6apm_graph *graph,
+			       unsigned int dir);
+/* Helpers */
+int q6apm_send_cmd_sync(struct q6apm *apm, struct gpr_pkt *pkt,
+			uint32_t rsp_opcode);
+
+/* Callback for graph specific */
+struct audioreach_module *q6apm_find_module_by_mid(struct q6apm_graph *graph,
+						    uint32_t mid);
+
+void q6apm_set_fe_dai_ops(struct snd_soc_dai_driver *dai_drv);
+int q6apm_connect_sub_graphs(struct q6apm *apm, u32 src_sgid, u32 dst_sgid,
+			     bool connect);
+bool q6apm_is_sub_graphs_connected(struct q6apm *apm, u32 src_sgid,
+				   u32 dst_sgid);
+int q6apm_graph_get_rx_shmem_module_iid(struct q6apm_graph *graph);
+
+#endif /* __APM_GRAPH_ */