From f9004dbfff8a3fbbd7e2a88c8a4327c7f2f8e5b2 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 31 Jan 2024 01:04:47 +0000
Subject: [PATCH] add driver 5G
---
kernel/include/sound/compress_driver.h | 64 +++++++++++++++++++++++++++++---
1 files changed, 58 insertions(+), 6 deletions(-)
diff --git a/kernel/include/sound/compress_driver.h b/kernel/include/sound/compress_driver.h
index 325c72a..82417ce 100644
--- a/kernel/include/sound/compress_driver.h
+++ b/kernel/include/sound/compress_driver.h
@@ -12,6 +12,7 @@
#include <linux/types.h>
#include <linux/sched.h>
+#include <linux/android_kabi.h>
#include <sound/core.h>
#include <sound/compress_offload.h>
#include <sound/asound.h>
@@ -33,6 +34,10 @@
* @total_bytes_transferred: cumulative bytes transferred by offload DSP
* @sleep: poll sleep
* @private_data: driver private data pointer
+ * @dma_area: virtual buffer address
+ * @dma_addr: physical buffer address (not accessible from main CPU)
+ * @dma_bytes: size of DMA area
+ * @dma_buffer_p: runtime dma buffer pointer
*/
struct snd_compr_runtime {
snd_pcm_state_t state;
@@ -45,6 +50,13 @@
u64 total_bytes_transferred;
wait_queue_head_t sleep;
void *private_data;
+
+ unsigned char *dma_area;
+ dma_addr_t dma_addr;
+ size_t dma_bytes;
+ struct snd_dma_buffer *dma_buffer_p;
+
+ ANDROID_KABI_RESERVE(1);
};
/**
@@ -57,7 +69,9 @@
* @direction: stream direction, playback/recording
* @metadata_set: metadata set flag, true when set
* @next_track: has userspace signal next track transition, true when set
+ * @partial_drain: undergoing partial_drain for stream, true when set
* @private_data: pointer to DSP private data
+ * @dma_buffer: allocated buffer if any
*/
struct snd_compr_stream {
const char *name;
@@ -68,8 +82,11 @@
enum snd_compr_direction direction;
bool metadata_set;
bool next_track;
+ bool partial_drain;
void *private_data;
- struct snd_soc_pcm_runtime *be;
+ struct snd_dma_buffer dma_buffer;
+
+ ANDROID_KABI_RESERVE(1);
};
/**
@@ -84,8 +101,6 @@
* @get_params: retrieve the codec parameters, mandatory
* @set_metadata: Set the metadata values for a stream
* @get_metadata: retrieves the requested metadata values from stream
- * @set_next_track_param: send codec specific data of subsequent track
- * in gapless
* @trigger: Trigger operations like start, pause, resume, drain, stop.
* This callback is mandatory
* @pointer: Retrieve current h/w pointer information. Mandatory
@@ -108,8 +123,6 @@
struct snd_compr_metadata *metadata);
int (*get_metadata)(struct snd_compr_stream *stream,
struct snd_compr_metadata *metadata);
- int (*set_next_track_param)(struct snd_compr_stream *stream,
- union snd_codec_options *codec_options);
int (*trigger)(struct snd_compr_stream *stream, int cmd);
int (*pointer)(struct snd_compr_stream *stream,
struct snd_compr_tstamp *tstamp);
@@ -122,6 +135,8 @@
struct snd_compr_caps *caps);
int (*get_codec_caps) (struct snd_compr_stream *stream,
struct snd_compr_codec_caps *codec);
+
+ ANDROID_KABI_RESERVE(1);
};
/**
@@ -150,6 +165,7 @@
struct snd_info_entry *proc_root;
struct snd_info_entry *proc_info_entry;
#endif
+ ANDROID_KABI_RESERVE(1);
};
/* compress device register APIs */
@@ -176,11 +192,47 @@
if (snd_BUG_ON(!stream))
return;
- stream->runtime->state = SNDRV_PCM_STATE_SETUP;
+ /* for partial_drain case we are back to running state on success */
+ if (stream->partial_drain) {
+ stream->runtime->state = SNDRV_PCM_STATE_RUNNING;
+ stream->partial_drain = false; /* clear this flag as well */
+ } else {
+ stream->runtime->state = SNDRV_PCM_STATE_SETUP;
+ }
wake_up(&stream->runtime->sleep);
}
+/**
+ * snd_compr_set_runtime_buffer - Set the Compress runtime buffer
+ * @stream: compress stream to set
+ * @bufp: the buffer information, NULL to clear
+ *
+ * Copy the buffer information to runtime buffer when @bufp is non-NULL.
+ * Otherwise it clears the current buffer information.
+ */
+static inline void
+snd_compr_set_runtime_buffer(struct snd_compr_stream *stream,
+ struct snd_dma_buffer *bufp)
+{
+ struct snd_compr_runtime *runtime = stream->runtime;
+
+ if (bufp) {
+ runtime->dma_buffer_p = bufp;
+ runtime->dma_area = bufp->area;
+ runtime->dma_addr = bufp->addr;
+ runtime->dma_bytes = bufp->bytes;
+ } else {
+ runtime->dma_buffer_p = NULL;
+ runtime->dma_area = NULL;
+ runtime->dma_addr = 0;
+ runtime->dma_bytes = 0;
+ }
+}
+
+int snd_compr_malloc_pages(struct snd_compr_stream *stream, size_t size);
+int snd_compr_free_pages(struct snd_compr_stream *stream);
+
int snd_compr_stop_error(struct snd_compr_stream *stream,
snd_pcm_state_t state);
--
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