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, 418 insertions, 0 deletions

diff --git a/drivers/misc/qcom/qdsp6v2/audio_wmapro.c b/drivers/misc/qcom/qdsp6v2/audio_wmapro.c
new file mode 100644
index 000000000000..8d96b99d8f84
--- /dev/null
+++ b/drivers/misc/qcom/qdsp6v2/audio_wmapro.c
@@ -0,0 +1,418 @@
+/* wmapro audio output device
+ *
+ * Copyright (C) 2008 Google, Inc.
+ * Copyright (C) 2008 HTC Corporation
+ * Copyright (c) 2009-2015, The Linux Foundation. All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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_wmapro.h>
+#include <linux/compat.h>
+#include "audio_utils_aio.h"
+
+static struct miscdevice audio_wmapro_misc;
+static struct ws_mgr audio_wmapro_ws_mgr;
+
+#ifdef CONFIG_DEBUG_FS
+static const struct file_operations audio_wmapro_debug_fops = {
+	.read = audio_aio_debug_read,
+	.open = audio_aio_debug_open,
+};
+#endif
+
+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_wmapro_cfg wmapro_cfg;
+		struct msm_audio_wmapro_config *wmapro_config;
+		pr_debug("%s: AUDIO_START session_id[%d]\n", __func__,
+						audio->ac->session);
+		if (audio->feedback == NON_TUNNEL_MODE) {
+			/* Configure PCM output block */
+			rc = q6asm_enc_cfg_blk_pcm_v2(audio->ac,
+					audio->pcm_cfg.sample_rate,
+					audio->pcm_cfg.channel_count,
+					16, /* bits per sample */
+					true, /* use default channel map */
+					true, /* use back channel map flavor */
+					NULL);
+			if (rc < 0) {
+				pr_err("pcm output block config failed\n");
+				break;
+			}
+		}
+		wmapro_config = (struct msm_audio_wmapro_config *)
+				audio->codec_cfg;
+		if ((wmapro_config->formattag == 0x162) ||
+		(wmapro_config->formattag == 0x163) ||
+		(wmapro_config->formattag == 0x166) ||
+		(wmapro_config->formattag == 0x167)) {
+			wmapro_cfg.format_tag = wmapro_config->formattag;
+		} else {
+			pr_err("%s:AUDIO_START failed: formattag = %d\n",
+				__func__, wmapro_config->formattag);
+			rc = -EINVAL;
+			break;
+		}
+		if (wmapro_config->numchannels > 0) {
+			wmapro_cfg.ch_cfg = wmapro_config->numchannels;
+		} else {
+			pr_err("%s:AUDIO_START failed: channels = %d\n",
+				__func__, wmapro_config->numchannels);
+			rc = -EINVAL;
+			break;
+		}
+		if (wmapro_config->samplingrate > 0) {
+			wmapro_cfg.sample_rate = wmapro_config->samplingrate;
+		} else {
+			pr_err("%s:AUDIO_START failed: sample_rate = %d\n",
+				__func__, wmapro_config->samplingrate);
+			rc = -EINVAL;
+			break;
+		}
+		wmapro_cfg.avg_bytes_per_sec =
+				wmapro_config->avgbytespersecond;
+		if ((wmapro_config->asfpacketlength <= 13376) ||
+		(wmapro_config->asfpacketlength > 0)) {
+			wmapro_cfg.block_align =
+				wmapro_config->asfpacketlength;
+		} else {
+			pr_err("%s:AUDIO_START failed: block_align = %d\n",
+				__func__, wmapro_config->asfpacketlength);
+			rc = -EINVAL;
+			break;
+		}
+		if ((wmapro_config->validbitspersample == 16) ||
+			(wmapro_config->validbitspersample == 24)) {
+			wmapro_cfg.valid_bits_per_sample =
+				wmapro_config->validbitspersample;
+		} else {
+			pr_err("%s:AUDIO_START failed: bitspersample = %d\n",
+				__func__, wmapro_config->validbitspersample);
+			rc = -EINVAL;
+			break;
+		}
+		wmapro_cfg.ch_mask = wmapro_config->channelmask;
+		wmapro_cfg.encode_opt = wmapro_config->encodeopt;
+		wmapro_cfg.adv_encode_opt =
+				wmapro_config->advancedencodeopt;
+		wmapro_cfg.adv_encode_opt2 =
+				wmapro_config->advancedencodeopt2;
+		/* Configure Media format block */
+		rc = q6asm_media_format_block_wmapro(audio->ac, &wmapro_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: Unkown ioctl cmd %d\n", __func__, cmd);
+		rc = -EINVAL;
+		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_GET_WMAPRO_CONFIG: {
+		if (copy_to_user((void *)arg, audio->codec_cfg,
+			 sizeof(struct msm_audio_wmapro_config))) {
+			pr_err("%s: copy_to_user for AUDIO_GET_WMAPRO_CONFIG failed\n",
+				__func__);
+			rc = -EFAULT;
+		}
+		break;
+	}
+	case AUDIO_SET_WMAPRO_CONFIG: {
+		if (copy_from_user(audio->codec_cfg, (void *)arg,
+			sizeof(struct msm_audio_wmapro_config))) {
+			pr_err("%s: copy_from_user for AUDIO_SET_WMAPRO_CONFIG_V2 failed\n",
+				__func__);
+			rc = -EFAULT;
+			break;
+		}
+		break;
+	}
+	case AUDIO_START: {
+		rc = audio_ioctl_shared(file, cmd, (void *)arg);
+		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_wmapro_config32 {
+	u16 armdatareqthr;
+	u8  validbitspersample;
+	u8  numchannels;
+	u16 formattag;
+	u32 samplingrate;
+	u32 avgbytespersecond;
+	u16 asfpacketlength;
+	u32 channelmask;
+	u16 encodeopt;
+	u16 advancedencodeopt;
+	u32 advancedencodeopt2;
+};
+
+enum {
+	AUDIO_GET_WMAPRO_CONFIG_32 = _IOR(AUDIO_IOCTL_MAGIC,
+	  (AUDIO_MAX_COMMON_IOCTL_NUM+0), struct msm_audio_wmapro_config32),
+	AUDIO_SET_WMAPRO_CONFIG_32 = _IOW(AUDIO_IOCTL_MAGIC,
+	  (AUDIO_MAX_COMMON_IOCTL_NUM+1), struct msm_audio_wmapro_config32)
+};
+
+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_GET_WMAPRO_CONFIG_32: {
+		struct msm_audio_wmapro_config *wmapro_config;
+		struct msm_audio_wmapro_config32 wmapro_config_32;
+
+		wmapro_config =
+			(struct msm_audio_wmapro_config *)audio->codec_cfg;
+		wmapro_config_32.armdatareqthr = wmapro_config->armdatareqthr;
+		wmapro_config_32.validbitspersample =
+					wmapro_config->validbitspersample;
+		wmapro_config_32.numchannels = wmapro_config->numchannels;
+		wmapro_config_32.formattag = wmapro_config->formattag;
+		wmapro_config_32.samplingrate = wmapro_config->samplingrate;
+		wmapro_config_32.avgbytespersecond =
+					wmapro_config->avgbytespersecond;
+		wmapro_config_32.asfpacketlength =
+					wmapro_config->asfpacketlength;
+		wmapro_config_32.channelmask = wmapro_config->channelmask;
+		wmapro_config_32.encodeopt = wmapro_config->encodeopt;
+		wmapro_config_32.advancedencodeopt =
+					wmapro_config->advancedencodeopt;
+		wmapro_config_32.advancedencodeopt2 =
+					wmapro_config->advancedencodeopt2;
+
+		if (copy_to_user((void *)arg, &wmapro_config_32,
+			 sizeof(struct msm_audio_wmapro_config32))) {
+			pr_err("%s: copy_to_user for AUDIO_GET_WMAPRO_CONFIG_V2_32 failed\n",
+				__func__);
+			rc = -EFAULT;
+		}
+		break;
+	}
+	case AUDIO_SET_WMAPRO_CONFIG_32: {
+		struct msm_audio_wmapro_config *wmapro_config;
+		struct msm_audio_wmapro_config32 wmapro_config_32;
+
+		if (copy_from_user(&wmapro_config_32, (void *)arg,
+			sizeof(struct msm_audio_wmapro_config32))) {
+			pr_err(
+				"%s: copy_from_user for AUDIO_SET_WMAPRO_CONFG_V2_32 failed\n",
+				__func__);
+			rc = -EFAULT;
+			break;
+		}
+		wmapro_config =
+			(struct msm_audio_wmapro_config *)audio->codec_cfg;
+		wmapro_config->armdatareqthr = wmapro_config_32.armdatareqthr;
+		wmapro_config->validbitspersample =
+					wmapro_config_32.validbitspersample;
+		wmapro_config->numchannels = wmapro_config_32.numchannels;
+		wmapro_config->formattag = wmapro_config_32.formattag;
+		wmapro_config->samplingrate = wmapro_config_32.samplingrate;
+		wmapro_config->avgbytespersecond =
+					wmapro_config_32.avgbytespersecond;
+		wmapro_config->asfpacketlength =
+					wmapro_config_32.asfpacketlength;
+		wmapro_config->channelmask = wmapro_config_32.channelmask;
+		wmapro_config->encodeopt = wmapro_config_32.encodeopt;
+		wmapro_config->advancedencodeopt =
+					wmapro_config_32.advancedencodeopt;
+		wmapro_config->advancedencodeopt2 =
+					wmapro_config_32.advancedencodeopt2;
+		break;
+	}
+	case AUDIO_START: {
+		rc = audio_ioctl_shared(file, cmd, (void *)arg);
+		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;
+
+#ifdef CONFIG_DEBUG_FS
+	/* 4 bytes represents decoder number, 1 byte for terminate string */
+	char name[sizeof "msm_wmapro_" + 5];
+#endif
+	audio = kzalloc(sizeof(struct q6audio_aio), GFP_KERNEL);
+
+	if (audio == NULL) {
+		pr_err("Could not allocate memory for wma decode driver\n");
+		return -ENOMEM;
+	}
+	audio->codec_cfg = kzalloc(sizeof(struct msm_audio_wmapro_config),
+					GFP_KERNEL);
+	if (audio->codec_cfg == NULL) {
+		pr_err("%s: Could not allocate memory for wmapro"
+			"config\n", __func__);
+		kfree(audio);
+		return -ENOMEM;
+	}
+
+
+	audio->pcm_cfg.buffer_size = PCM_BUFSZ_MIN;
+	audio->miscdevice = &audio_wmapro_misc;
+	audio->wakelock_voted = false;
+	audio->audio_ws_mgr = &audio_wmapro_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_WMA_V10PRO);
+		if (rc < 0) {
+			pr_err("NT mode Open failed rc=%d\n", rc);
+			rc = -ENODEV;
+			goto fail;
+		}
+		audio->feedback = NON_TUNNEL_MODE;
+		/* open WMA 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_WMA_V10PRO);
+		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;
+	}
+
+#ifdef CONFIG_DEBUG_FS
+	snprintf(name, sizeof name, "msm_wmapro_%04x", audio->ac->session);
+	audio->dentry = debugfs_create_file(name, S_IFREG | S_IRUGO,
+					    NULL, (void *)audio,
+					    &audio_wmapro_debug_fops);
+
+	if (IS_ERR(audio->dentry))
+		pr_debug("debugfs_create_file failed\n");
+#endif
+	pr_info("%s:wmapro decoder open success, session_id = %d\n", __func__,
+				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_wmapro_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_wmapro_misc = {
+	.minor = MISC_DYNAMIC_MINOR,
+	.name = "msm_wmapro",
+	.fops = &audio_wmapro_fops,
+};
+
+static int __init audio_wmapro_init(void)
+{
+	int ret = misc_register(&audio_wmapro_misc);
+
+	if (ret == 0)
+		device_init_wakeup(audio_wmapro_misc.this_device, true);
+	audio_wmapro_ws_mgr.ref_cnt = 0;
+	mutex_init(&audio_wmapro_ws_mgr.ws_lock);
+
+	return ret;
+}
+
+device_initcall(audio_wmapro_init);