ASoC: msm: Add Audio drivers for MSM targets

Add snapshot for audio drivers for MSM targets. The code is
migrated from msm-3.18 kernel at the below commit/AU level -

AU_LINUX_ANDROID_LA.HB.1.3.1.06.00.00.187.056
(e70ad0cd5efdd9dc91a77dcdac31d6132e1315c1)
(Promotion of kernel.lnx.3.18-151201.)

Signed-off-by: Sudheer Papothi <spapothi@codeaurora.org>

1 files changed, 359 insertions, 0 deletions

diff --git a/drivers/misc/qcom/qdsp6v2/audio_ape.c b/drivers/misc/qcom/qdsp6v2/audio_ape.c
new file mode 100644
index 000000000000..b4c2ddb947de
--- /dev/null
+++ b/drivers/misc/qcom/qdsp6v2/audio_ape.c
@@ -0,0 +1,359 @@
+/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
+*
+* This program is free software; you can redistribute it and/or modify
+* it under the terms of the GNU General Public License version 2 and
+* only version 2 as published by the Free Software Foundation.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+*/
+
+#include <linux/types.h>
+#include <linux/msm_audio_ape.h>
+#include <linux/compat.h>
+#include "audio_utils_aio.h"
+
+static struct miscdevice audio_ape_misc;
+static struct ws_mgr audio_ape_ws_mgr;
+
+static const struct file_operations audio_ape_debug_fops = {
+	.read = audio_aio_debug_read,
+	.open = audio_aio_debug_open,
+};
+static struct dentry *config_debugfs_create_file(const char *name, void *data)
+{
+	return debugfs_create_file(name, S_IFREG | S_IRUGO,
+			NULL, (void *)data, &audio_ape_debug_fops);
+}
+
+static long audio_ioctl_shared(struct file *file, unsigned int cmd,
+						void *arg)
+{
+	struct q6audio_aio *audio = file->private_data;
+	int rc = 0;
+
+	switch (cmd) {
+	case AUDIO_START: {
+		struct asm_ape_cfg ape_cfg;
+		struct msm_audio_ape_config *ape_config;
+		pr_debug("%s[%p]: AUDIO_START session_id[%d]\n", __func__,
+						audio, audio->ac->session);
+		if (audio->feedback == NON_TUNNEL_MODE) {
+			/* Configure PCM output block */
+			rc = q6asm_enc_cfg_blk_pcm(audio->ac,
+					audio->pcm_cfg.sample_rate,
+					audio->pcm_cfg.channel_count);
+			if (rc < 0) {
+				pr_err("pcm output block config failed\n");
+				break;
+			}
+		}
+		ape_config = (struct msm_audio_ape_config *)audio->codec_cfg;
+		ape_cfg.compatible_version = ape_config->compatibleVersion;
+		ape_cfg.compression_level = ape_config->compressionLevel;
+		ape_cfg.format_flags = ape_config->formatFlags;
+		ape_cfg.blocks_per_frame = ape_config->blocksPerFrame;
+		ape_cfg.final_frame_blocks = ape_config->finalFrameBlocks;
+		ape_cfg.total_frames = ape_config->totalFrames;
+		ape_cfg.bits_per_sample = ape_config->bitsPerSample;
+		ape_cfg.num_channels = ape_config->numChannels;
+		ape_cfg.sample_rate = ape_config->sampleRate;
+		ape_cfg.seek_table_present = ape_config->seekTablePresent;
+		pr_debug("%s: compatibleVersion %d compressionLevel %d formatFlags %d blocksPerFrame %d finalFrameBlocks %d totalFrames %d bitsPerSample %d numChannels %d sampleRate %d seekTablePresent %d\n",
+				__func__, ape_config->compatibleVersion,
+				ape_config->compressionLevel,
+				ape_config->formatFlags,
+				ape_config->blocksPerFrame,
+				ape_config->finalFrameBlocks,
+				ape_config->totalFrames,
+				ape_config->bitsPerSample,
+				ape_config->numChannels,
+				ape_config->sampleRate,
+				ape_config->seekTablePresent);
+		/* Configure Media format block */
+		rc = q6asm_media_format_block_ape(audio->ac, &ape_cfg,
+							audio->ac->stream_id);
+		if (rc < 0) {
+			pr_err("cmd media format block failed\n");
+			break;
+		}
+		rc = audio_aio_enable(audio);
+		audio->eos_rsp = 0;
+		audio->eos_flag = 0;
+		if (!rc) {
+			audio->enabled = 1;
+		} else {
+			audio->enabled = 0;
+			pr_err("Audio Start procedure failed rc=%d\n", rc);
+			break;
+		}
+		pr_debug("AUDIO_START success enable[%d]\n", audio->enabled);
+		if (audio->stopped == 1)
+			audio->stopped = 0;
+		break;
+	}
+	default:
+		pr_err("%s: Unknown ioctl cmd = %d", __func__, cmd);
+		break;
+	}
+	return rc;
+}
+
+static long audio_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	struct q6audio_aio *audio = file->private_data;
+	int rc = 0;
+
+	switch (cmd) {
+	case AUDIO_START: {
+		rc = audio_ioctl_shared(file, cmd, (void *)arg);
+		break;
+	}
+	case AUDIO_GET_APE_CONFIG: {
+		if (copy_to_user((void *)arg, audio->codec_cfg,
+			sizeof(struct msm_audio_ape_config))) {
+			pr_err("%s:copy_to_user for AUDIO_GET_APE_CONFIG failed\n",
+				__func__);
+			rc = -EFAULT;
+			break;
+		}
+		break;
+	}
+	case AUDIO_SET_APE_CONFIG: {
+		if (copy_from_user(audio->codec_cfg, (void *)arg,
+			sizeof(struct msm_audio_ape_config))) {
+			pr_err("%s:copy_from_user for AUDIO_SET_APE_CONFIG failed\n",
+				__func__);
+			rc = -EFAULT;
+			break;
+		}
+		break;
+	}
+	default: {
+		pr_debug("%s[%p]: Calling utils ioctl\n", __func__, audio);
+		rc = audio->codec_ioctl(file, cmd, arg);
+		if (rc)
+			pr_err("Failed in utils_ioctl: %d\n", rc);
+		break;
+	}
+	}
+	return rc;
+}
+
+#ifdef CONFIG_COMPAT
+struct msm_audio_ape_config_32 {
+	u16 compatibleVersion;
+	u16 compressionLevel;
+	u32 formatFlags;
+	u32 blocksPerFrame;
+	u32 finalFrameBlocks;
+	u32 totalFrames;
+	u16 bitsPerSample;
+	u16 numChannels;
+	u32 sampleRate;
+	u32 seekTablePresent;
+
+};
+
+enum {
+	AUDIO_GET_APE_CONFIG_32 =  _IOR(AUDIO_IOCTL_MAGIC,
+	(AUDIO_MAX_COMMON_IOCTL_NUM+0), struct msm_audio_ape_config_32),
+	AUDIO_SET_APE_CONFIG_32 =  _IOW(AUDIO_IOCTL_MAGIC,
+	(AUDIO_MAX_COMMON_IOCTL_NUM+1), struct msm_audio_ape_config_32)
+};
+
+static long audio_compat_ioctl(struct file *file, unsigned int cmd,
+						unsigned long arg)
+{
+	struct q6audio_aio *audio = file->private_data;
+	int rc = 0;
+
+	switch (cmd) {
+	case AUDIO_START: {
+		rc = audio_ioctl_shared(file, cmd, (void *)arg);
+		break;
+	}
+	case AUDIO_GET_APE_CONFIG_32: {
+		struct msm_audio_ape_config *ape_config;
+		struct msm_audio_ape_config_32 ape_config_32;
+
+		ape_config = (struct msm_audio_ape_config *)audio->codec_cfg;
+		ape_config_32.compatibleVersion = ape_config->compatibleVersion;
+		ape_config_32.compressionLevel =
+				ape_config->compressionLevel;
+		ape_config_32.formatFlags = ape_config->formatFlags;
+		ape_config_32.blocksPerFrame = ape_config->blocksPerFrame;
+		ape_config_32.finalFrameBlocks = ape_config->finalFrameBlocks;
+		ape_config_32.totalFrames = ape_config->totalFrames;
+		ape_config_32.bitsPerSample = ape_config->bitsPerSample;
+		ape_config_32.numChannels = ape_config->numChannels;
+		ape_config_32.sampleRate = ape_config->sampleRate;
+		ape_config_32.seekTablePresent = ape_config->seekTablePresent;
+
+		if (copy_to_user((void *)arg, &ape_config_32,
+			sizeof(ape_config_32))) {
+			pr_err("%s: copy_to_user for GET_APE_CONFIG_32 failed\n",
+				 __func__);
+			rc = -EFAULT;
+			break;
+		}
+		break;
+	}
+	case AUDIO_SET_APE_CONFIG_32: {
+		struct msm_audio_ape_config *ape_config;
+		struct msm_audio_ape_config_32 ape_config_32;
+
+		if (copy_from_user(&ape_config_32, (void *)arg,
+			sizeof(ape_config_32))) {
+			pr_err("%s: copy_from_user for SET_APE_CONFIG_32 failed\n"
+				, __func__);
+			rc = -EFAULT;
+			break;
+		}
+		ape_config = (struct msm_audio_ape_config *)audio->codec_cfg;
+		ape_config->compatibleVersion = ape_config_32.compatibleVersion;
+		ape_config->compressionLevel =
+				ape_config_32.compressionLevel;
+		ape_config->formatFlags = ape_config_32.formatFlags;
+		ape_config->blocksPerFrame = ape_config_32.blocksPerFrame;
+		ape_config->finalFrameBlocks = ape_config_32.finalFrameBlocks;
+		ape_config->totalFrames = ape_config_32.totalFrames;
+		ape_config->bitsPerSample = ape_config_32.bitsPerSample;
+		ape_config->numChannels = ape_config_32.numChannels;
+		ape_config->sampleRate = ape_config_32.sampleRate;
+		ape_config->seekTablePresent = ape_config_32.seekTablePresent;
+
+		break;
+	}
+	default: {
+		pr_debug("%s[%p]: Calling utils ioctl\n", __func__, audio);
+		rc = audio->codec_compat_ioctl(file, cmd, arg);
+		if (rc)
+			pr_err("Failed in utils_ioctl: %d\n", rc);
+		break;
+	}
+	}
+	return rc;
+}
+#else
+#define audio_compat_ioctl NULL
+#endif
+
+static int audio_open(struct inode *inode, struct file *file)
+{
+	struct q6audio_aio *audio = NULL;
+	int rc = 0;
+
+	/* 4 bytes represents decoder number, 1 byte for terminate string */
+	char name[sizeof "msm_ape_" + 5];
+	audio = kzalloc(sizeof(struct q6audio_aio), GFP_KERNEL);
+
+	if (!audio) {
+		pr_err("Could not allocate memory for ape decode driver\n");
+		return -ENOMEM;
+	}
+	audio->codec_cfg = kzalloc(sizeof(struct msm_audio_ape_config),
+					GFP_KERNEL);
+	if (!audio->codec_cfg) {
+		pr_err("%s:Could not allocate memory for ape config\n",
+			__func__);
+		kfree(audio);
+		return -ENOMEM;
+	}
+
+	audio->pcm_cfg.buffer_size = PCM_BUFSZ_MIN;
+	audio->miscdevice = &audio_ape_misc;
+	audio->wakelock_voted = false;
+	audio->audio_ws_mgr = &audio_ape_ws_mgr;
+
+	audio->ac = q6asm_audio_client_alloc((app_cb) q6_audio_cb,
+					     (void *)audio);
+
+	if (!audio->ac) {
+		pr_err("Could not allocate memory for audio client\n");
+		kfree(audio->codec_cfg);
+		kfree(audio);
+		return -ENOMEM;
+	}
+	rc = audio_aio_open(audio, file);
+	if (rc < 0) {
+		pr_err("%s: audio_aio_open rc=%d\n",
+			__func__, rc);
+		goto fail;
+	}
+	/* open in T/NT mode */
+	if ((file->f_mode & FMODE_WRITE) && (file->f_mode & FMODE_READ)) {
+		rc = q6asm_open_read_write(audio->ac, FORMAT_LINEAR_PCM,
+					   FORMAT_APE);
+		if (rc < 0) {
+			pr_err("NT mode Open failed rc=%d\n", rc);
+			rc = -ENODEV;
+			goto fail;
+		}
+		audio->feedback = NON_TUNNEL_MODE;
+		/* open APE decoder, expected frames is always 1*/
+		audio->buf_cfg.frames_per_buf = 0x01;
+		audio->buf_cfg.meta_info_enable = 0x01;
+	} else if ((file->f_mode & FMODE_WRITE) &&
+			!(file->f_mode & FMODE_READ)) {
+		rc = q6asm_open_write(audio->ac, FORMAT_APE);
+		if (rc < 0) {
+			pr_err("T mode Open failed rc=%d\n", rc);
+			rc = -ENODEV;
+			goto fail;
+		}
+		audio->feedback = TUNNEL_MODE;
+		audio->buf_cfg.meta_info_enable = 0x00;
+	} else {
+		pr_err("Not supported mode\n");
+		rc = -EACCES;
+		goto fail;
+	}
+
+	snprintf(name, sizeof(name), "msm_ape_%04x", audio->ac->session);
+	audio->dentry = config_debugfs_create_file(name, (void *)audio);
+
+	if (IS_ERR_OR_NULL(audio->dentry))
+		pr_debug("debugfs_create_file failed\n");
+	pr_debug("%s:apedec success mode[%d]session[%d]\n", __func__,
+						audio->feedback,
+						audio->ac->session);
+	return rc;
+fail:
+	q6asm_audio_client_free(audio->ac);
+	kfree(audio->codec_cfg);
+	kfree(audio);
+	return rc;
+}
+
+static const struct file_operations audio_ape_fops = {
+	.owner = THIS_MODULE,
+	.open = audio_open,
+	.release = audio_aio_release,
+	.unlocked_ioctl = audio_ioctl,
+	.fsync = audio_aio_fsync,
+	.compat_ioctl = audio_compat_ioctl
+};
+
+static struct miscdevice audio_ape_misc = {
+	.minor = MISC_DYNAMIC_MINOR,
+	.name = "msm_ape",
+	.fops = &audio_ape_fops,
+};
+
+static int __init audio_ape_init(void)
+{
+	int ret = misc_register(&audio_ape_misc);
+
+	if (ret == 0)
+		device_init_wakeup(audio_ape_misc.this_device, true);
+	audio_ape_ws_mgr.ref_cnt = 0;
+	mutex_init(&audio_ape_ws_mgr.ws_lock);
+
+	return ret;
+}
+
+device_initcall(audio_ape_init);