audio-lnx: Initial change for techpack of audio drivers.
Add snapshot for audio drivers for SDM targets. The code is
migrated from msm-4.9 kernel at the below cutoff -
(74ff856e8d6: "net: ipc_router: Add dynamic enable/disable
wakeup source feature")
This changes are done for new techpack addition
for audio kernel. Migrate all audio kernel drivers
to this techpack.
Change-Id: I33d580af3ba86a5cb777583efc5d4cdaf2882d93
Signed-off-by: Asish Bhattacharya <asishb@codeaurora.org>
diff --git a/sound/soc/msm/qdsp6v2/msm-pcm-dtmf-v2.c b/sound/soc/msm/qdsp6v2/msm-pcm-dtmf-v2.c
new file mode 100644
index 0000000..f4e03fe
--- /dev/null
+++ b/sound/soc/msm/qdsp6v2/msm-pcm-dtmf-v2.c
@@ -0,0 +1,596 @@
+/* Copyright (c) 2013-2014, 2017 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/init.h>
+#include <linux/module.h>
+#include <linux/time.h>
+#include <linux/wait.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/dma-mapping.h>
+#include <sound/core.h>
+#include <sound/soc.h>
+#include <sound/pcm.h>
+#include <sound/q6afe-v2.h>
+
+#include "msm-pcm-q6-v2.h"
+#include "msm-pcm-routing-v2.h"
+#include "q6voice.h"
+
+enum {
+ DTMF_IN_RX,
+ DTMF_IN_TX,
+};
+
+enum format {
+ FORMAT_S16_LE = 2
+};
+
+struct dtmf_det_info {
+ char session[MAX_SESSION_NAME_LEN];
+ uint8_t dir;
+ uint16_t high_freq;
+ uint16_t low_freq;
+};
+
+struct dtmf_buf_node {
+ struct list_head list;
+ struct dtmf_det_info dtmf_det_pkt;
+};
+
+enum dtmf_state {
+ DTMF_GEN_RX_STOPPED,
+ DTMF_GEN_RX_STARTED,
+};
+
+#define DTMF_MAX_Q_LEN 10
+#define DTMF_PKT_SIZE sizeof(struct dtmf_det_info)
+
+struct dtmf_drv_info {
+ enum dtmf_state state;
+ struct snd_pcm_substream *capture_substream;
+
+ struct list_head out_queue;
+ struct list_head free_out_queue;
+
+ wait_queue_head_t out_wait;
+
+ struct mutex lock;
+ spinlock_t dsp_lock;
+
+ uint8_t capture_start;
+ uint8_t capture_instance;
+
+ unsigned int pcm_capture_size;
+ unsigned int pcm_capture_count;
+ unsigned int pcm_capture_irq_pos;
+ unsigned int pcm_capture_buf_pos;
+};
+
+static struct snd_pcm_hardware msm_pcm_hardware = {
+ .info = (SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_BLOCK_TRANSFER |
+ SNDRV_PCM_INFO_MMAP_VALID |
+ SNDRV_PCM_INFO_INTERLEAVED),
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ .channels_min = 1,
+ .channels_max = 1,
+ .buffer_bytes_max = (sizeof(struct dtmf_buf_node) * DTMF_MAX_Q_LEN),
+ .period_bytes_min = DTMF_PKT_SIZE,
+ .period_bytes_max = DTMF_PKT_SIZE,
+ .periods_min = DTMF_MAX_Q_LEN,
+ .periods_max = DTMF_MAX_Q_LEN,
+ .fifo_size = 0,
+};
+
+static int msm_dtmf_rx_generate_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ uint16_t low_freq = ucontrol->value.integer.value[0];
+ uint16_t high_freq = ucontrol->value.integer.value[1];
+ int64_t duration = ucontrol->value.integer.value[2];
+ uint16_t gain = ucontrol->value.integer.value[3];
+
+ pr_debug("%s: low_freq=%d high_freq=%d duration=%d gain=%d\n",
+ __func__, low_freq, high_freq, (int)duration, gain);
+ afe_dtmf_generate_rx(duration, high_freq, low_freq, gain);
+ return 0;
+}
+
+static int msm_dtmf_rx_generate_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ pr_debug("%s:\n", __func__);
+ ucontrol->value.integer.value[0] = 0;
+ return 0;
+}
+
+static int msm_dtmf_detect_voice_rx_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ int enable = ucontrol->value.integer.value[0];
+
+ pr_debug("%s: enable=%d\n", __func__, enable);
+ voc_enable_dtmf_rx_detection(voc_get_session_id(VOICE_SESSION_NAME),
+ enable);
+
+ return 0;
+}
+
+static int msm_dtmf_detect_voice_rx_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ ucontrol->value.integer.value[0] = 0;
+ return 0;
+}
+
+static int msm_dtmf_detect_volte_rx_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ int enable = ucontrol->value.integer.value[0];
+
+ pr_debug("%s: enable=%d\n", __func__, enable);
+ voc_enable_dtmf_rx_detection(voc_get_session_id(VOLTE_SESSION_NAME),
+ enable);
+
+ return 0;
+}
+
+static int msm_dtmf_detect_volte_rx_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ ucontrol->value.integer.value[0] = 0;
+ return 0;
+}
+
+static struct snd_kcontrol_new msm_dtmf_controls[] = {
+ SOC_SINGLE_MULTI_EXT("DTMF_Generate Rx Low High Duration Gain",
+ SND_SOC_NOPM, 0, 5000, 0, 4,
+ msm_dtmf_rx_generate_get,
+ msm_dtmf_rx_generate_put),
+ SOC_SINGLE_EXT("DTMF_Detect Rx Voice enable", SND_SOC_NOPM, 0, 1, 0,
+ msm_dtmf_detect_voice_rx_get,
+ msm_dtmf_detect_voice_rx_put),
+ SOC_SINGLE_EXT("DTMF_Detect Rx VoLTE enable", SND_SOC_NOPM, 0, 1, 0,
+ msm_dtmf_detect_volte_rx_get,
+ msm_dtmf_detect_volte_rx_put),
+};
+
+static int msm_pcm_dtmf_probe(struct snd_soc_platform *platform)
+{
+ snd_soc_add_platform_controls(platform, msm_dtmf_controls,
+ ARRAY_SIZE(msm_dtmf_controls));
+ return 0;
+}
+
+static void dtmf_rx_detected_cb(uint8_t *pkt,
+ char *session,
+ void *private_data)
+{
+ struct dtmf_buf_node *buf_node = NULL;
+ struct vss_istream_evt_rx_dtmf_detected *dtmf_det_pkt =
+ (struct vss_istream_evt_rx_dtmf_detected *)pkt;
+ struct dtmf_drv_info *prtd = private_data;
+ unsigned long dsp_flags;
+
+ pr_debug("%s\n", __func__);
+ if (prtd->capture_substream == NULL)
+ return;
+
+ /* Copy dtmf detected info into out_queue. */
+ spin_lock_irqsave(&prtd->dsp_lock, dsp_flags);
+ /* discarding dtmf detection info till start is received */
+ if (!list_empty(&prtd->free_out_queue) && prtd->capture_start) {
+ buf_node = list_first_entry(&prtd->free_out_queue,
+ struct dtmf_buf_node, list);
+ list_del(&buf_node->list);
+ buf_node->dtmf_det_pkt.high_freq = dtmf_det_pkt->high_freq;
+ buf_node->dtmf_det_pkt.low_freq = dtmf_det_pkt->low_freq;
+ if (session != NULL)
+ strlcpy(buf_node->dtmf_det_pkt.session,
+ session, MAX_SESSION_NAME_LEN);
+
+ buf_node->dtmf_det_pkt.dir = DTMF_IN_RX;
+ pr_debug("high =%d, low=%d session=%s\n",
+ buf_node->dtmf_det_pkt.high_freq,
+ buf_node->dtmf_det_pkt.low_freq,
+ buf_node->dtmf_det_pkt.session);
+ list_add_tail(&buf_node->list, &prtd->out_queue);
+ prtd->pcm_capture_irq_pos += prtd->pcm_capture_count;
+ spin_unlock_irqrestore(&prtd->dsp_lock, dsp_flags);
+ snd_pcm_period_elapsed(prtd->capture_substream);
+ } else {
+ spin_unlock_irqrestore(&prtd->dsp_lock, dsp_flags);
+ pr_err("DTMF detection pkt in Rx dropped, no free node available\n");
+ }
+
+ wake_up(&prtd->out_wait);
+}
+
+static int msm_pcm_capture_copy(struct snd_pcm_substream *substream,
+ int channel, snd_pcm_uframes_t hwoff,
+ void __user *buf, snd_pcm_uframes_t frames)
+{
+ int ret = 0;
+ int count = 0;
+ struct dtmf_buf_node *buf_node = NULL;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct dtmf_drv_info *prtd = runtime->private_data;
+ unsigned long dsp_flags;
+
+ count = frames_to_bytes(runtime, frames);
+
+ ret = wait_event_interruptible_timeout(prtd->out_wait,
+ (!list_empty(&prtd->out_queue)),
+ 1 * HZ);
+
+ if (ret > 0) {
+ if (count <= DTMF_PKT_SIZE) {
+ spin_lock_irqsave(&prtd->dsp_lock, dsp_flags);
+ buf_node = list_first_entry(&prtd->out_queue,
+ struct dtmf_buf_node, list);
+ list_del(&buf_node->list);
+ spin_unlock_irqrestore(&prtd->dsp_lock, dsp_flags);
+ ret = copy_to_user(buf,
+ &buf_node->dtmf_det_pkt,
+ count);
+ if (ret) {
+ pr_err("%s: Copy to user returned %d\n",
+ __func__, ret);
+ ret = -EFAULT;
+ }
+ spin_lock_irqsave(&prtd->dsp_lock, dsp_flags);
+ list_add_tail(&buf_node->list,
+ &prtd->free_out_queue);
+ spin_unlock_irqrestore(&prtd->dsp_lock, dsp_flags);
+
+ } else {
+ pr_err("%s: Read count %d > DTMF_PKT_SIZE\n",
+ __func__, count);
+ ret = -ENOMEM;
+ }
+ } else if (ret == 0) {
+ pr_err("%s: No UL data available\n", __func__);
+ ret = -ETIMEDOUT;
+ } else {
+ pr_err("%s: Read was interrupted\n", __func__);
+ ret = -ERESTARTSYS;
+ }
+ return ret;
+}
+
+static int msm_pcm_copy(struct snd_pcm_substream *substream, int a,
+ snd_pcm_uframes_t hwoff, void __user *buf, snd_pcm_uframes_t frames)
+{
+ int ret = 0;
+
+ pr_debug("%s() DTMF\n", __func__);
+
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+ ret = msm_pcm_capture_copy(substream, a, hwoff, buf, frames);
+
+ return ret;
+}
+
+static int msm_pcm_open(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct dtmf_drv_info *prtd = NULL;
+ int ret = 0;
+
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
+ prtd = kzalloc(sizeof(struct dtmf_drv_info), GFP_KERNEL);
+
+ if (prtd == NULL) {
+ ret = -ENOMEM;
+ goto done;
+ }
+
+ mutex_init(&prtd->lock);
+ spin_lock_init(&prtd->dsp_lock);
+ init_waitqueue_head(&prtd->out_wait);
+ INIT_LIST_HEAD(&prtd->out_queue);
+ INIT_LIST_HEAD(&prtd->free_out_queue);
+
+ runtime->hw = msm_pcm_hardware;
+
+ ret = snd_pcm_hw_constraint_integer(runtime,
+ SNDRV_PCM_HW_PARAM_PERIODS);
+ if (ret < 0)
+ pr_info("snd_pcm_hw_constraint_integer failed\n");
+
+ prtd->capture_substream = substream;
+ prtd->capture_instance++;
+ runtime->private_data = prtd;
+ }
+
+done:
+ return ret;
+}
+
+static int msm_pcm_close(struct snd_pcm_substream *substream)
+{
+ int ret = 0;
+ struct list_head *ptr = NULL;
+ struct list_head *next = NULL;
+ struct dtmf_buf_node *buf_node = NULL;
+ struct snd_dma_buffer *c_dma_buf;
+ struct snd_pcm_substream *c_substream;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct dtmf_drv_info *prtd = runtime->private_data;
+ unsigned long dsp_flags;
+
+ pr_debug("%s() DTMF\n", __func__);
+
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
+ mutex_lock(&prtd->lock);
+ wake_up(&prtd->out_wait);
+
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+ prtd->capture_instance--;
+
+ if (!prtd->capture_instance) {
+ if (prtd->state == DTMF_GEN_RX_STARTED) {
+ prtd->state = DTMF_GEN_RX_STOPPED;
+ voc_disable_dtmf_det_on_active_sessions();
+ voc_register_dtmf_rx_detection_cb(NULL, NULL);
+ }
+ /* release all buffer */
+ /* release out_queue and free_out_queue */
+ pr_debug("release all buffer\n");
+ c_substream = prtd->capture_substream;
+ if (c_substream == NULL) {
+ pr_debug("c_substream is NULL\n");
+ mutex_unlock(&prtd->lock);
+ return -EINVAL;
+ }
+
+ c_dma_buf = &c_substream->dma_buffer;
+ if (c_dma_buf == NULL) {
+ pr_debug("c_dma_buf is NULL.\n");
+ mutex_unlock(&prtd->lock);
+ return -EINVAL;
+ }
+
+ if (c_dma_buf->area != NULL) {
+ spin_lock_irqsave(&prtd->dsp_lock, dsp_flags);
+ list_for_each_safe(ptr, next,
+ &prtd->out_queue) {
+ buf_node = list_entry(ptr,
+ struct dtmf_buf_node, list);
+ list_del(&buf_node->list);
+ }
+
+ list_for_each_safe(ptr, next,
+ &prtd->free_out_queue) {
+ buf_node = list_entry(ptr,
+ struct dtmf_buf_node, list);
+ list_del(&buf_node->list);
+ }
+
+ spin_unlock_irqrestore(&prtd->dsp_lock,
+ dsp_flags);
+ dma_free_coherent(c_substream->pcm->card->dev,
+ runtime->hw.buffer_bytes_max,
+ c_dma_buf->area,
+ c_dma_buf->addr);
+ c_dma_buf->area = NULL;
+ }
+ }
+ prtd->capture_substream = NULL;
+ mutex_unlock(&prtd->lock);
+ }
+
+ return ret;
+}
+
+static int msm_pcm_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct dtmf_drv_info *prtd = runtime->private_data;
+ struct snd_dma_buffer *dma_buf = &substream->dma_buffer;
+ struct dtmf_buf_node *buf_node = NULL;
+ int i = 0, offset = 0;
+ int ret = 0;
+
+ pr_debug("%s: DTMF\n", __func__);
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
+ mutex_lock(&prtd->lock);
+ dma_buf->dev.type = SNDRV_DMA_TYPE_DEV;
+ dma_buf->dev.dev = substream->pcm->card->dev;
+ dma_buf->private_data = NULL;
+
+ dma_buf->area = dma_alloc_coherent(substream->pcm->card->dev,
+ runtime->hw.buffer_bytes_max,
+ &dma_buf->addr, GFP_KERNEL);
+ if (!dma_buf->area) {
+ pr_err("%s:MSM DTMF dma_alloc failed\n", __func__);
+ mutex_unlock(&prtd->lock);
+ return -ENOMEM;
+ }
+
+ dma_buf->bytes = runtime->hw.buffer_bytes_max;
+ memset(dma_buf->area, 0, runtime->hw.buffer_bytes_max);
+
+ for (i = 0; i < DTMF_MAX_Q_LEN; i++) {
+ pr_debug("node =%d\n", i);
+ buf_node = (void *) dma_buf->area + offset;
+ list_add_tail(&buf_node->list,
+ &prtd->free_out_queue);
+ offset = offset + sizeof(struct dtmf_buf_node);
+ }
+
+ snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
+ mutex_unlock(&prtd->lock);
+ }
+
+ return ret;
+}
+
+static int msm_pcm_capture_prepare(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct dtmf_drv_info *prtd = runtime->private_data;
+
+ pr_debug("%s: DTMF\n", __func__);
+ prtd->pcm_capture_size = snd_pcm_lib_buffer_bytes(substream);
+ prtd->pcm_capture_count = snd_pcm_lib_period_bytes(substream);
+ prtd->pcm_capture_irq_pos = 0;
+ prtd->pcm_capture_buf_pos = 0;
+ return 0;
+}
+
+static int msm_pcm_prepare(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct dtmf_drv_info *prtd = runtime->private_data;
+
+ pr_debug("%s: DTMF\n", __func__);
+
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
+ mutex_lock(&prtd->lock);
+
+ msm_pcm_capture_prepare(substream);
+
+ if (runtime->format != FORMAT_S16_LE) {
+ pr_err("format:%u doesn't match %d\n",
+ (uint32_t)runtime->format, FORMAT_S16_LE);
+ mutex_unlock(&prtd->lock);
+ return -EINVAL;
+ }
+
+ if (prtd->capture_instance &&
+ (prtd->state != DTMF_GEN_RX_STARTED)) {
+ voc_register_dtmf_rx_detection_cb(dtmf_rx_detected_cb,
+ prtd);
+ prtd->state = DTMF_GEN_RX_STARTED;
+ }
+ mutex_unlock(&prtd->lock);
+ }
+
+ return 0;
+}
+
+static int msm_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+ int ret = 0;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct dtmf_drv_info *prtd = runtime->private_data;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ pr_debug("%s: Trigger start\n", __func__);
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+ prtd->capture_start = 1;
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ pr_debug("SNDRV_PCM_TRIGGER_STOP\n");
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+ prtd->capture_start = 0;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static snd_pcm_uframes_t msm_pcm_pointer(struct snd_pcm_substream *substream)
+{
+ snd_pcm_uframes_t ret = 0;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct dtmf_drv_info *prtd = runtime->private_data;
+
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
+ if (prtd->pcm_capture_irq_pos >= prtd->pcm_capture_size)
+ prtd->pcm_capture_irq_pos = 0;
+ ret = bytes_to_frames(runtime, (prtd->pcm_capture_irq_pos));
+ }
+
+ return ret;
+}
+
+static const struct snd_pcm_ops msm_pcm_ops = {
+ .open = msm_pcm_open,
+ .copy = msm_pcm_copy,
+ .hw_params = msm_pcm_hw_params,
+ .close = msm_pcm_close,
+ .prepare = msm_pcm_prepare,
+ .trigger = msm_pcm_trigger,
+ .pointer = msm_pcm_pointer,
+};
+
+static int msm_asoc_pcm_new(struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_card *card = rtd->card->snd_card;
+ int ret = 0;
+
+ if (!card->dev->coherent_dma_mask)
+ card->dev->coherent_dma_mask = DMA_BIT_MASK(32);
+ return ret;
+}
+
+static struct snd_soc_platform_driver msm_soc_platform = {
+ .ops = &msm_pcm_ops,
+ .pcm_new = msm_asoc_pcm_new,
+ .probe = msm_pcm_dtmf_probe,
+};
+
+static int msm_pcm_probe(struct platform_device *pdev)
+{
+ pr_debug("%s: dev name %s\n", __func__, dev_name(&pdev->dev));
+
+ return snd_soc_register_platform(&pdev->dev,
+ &msm_soc_platform);
+}
+
+static int msm_pcm_remove(struct platform_device *pdev)
+{
+ snd_soc_unregister_platform(&pdev->dev);
+ return 0;
+}
+
+static const struct of_device_id msm_pcm_dtmf_dt_match[] = {
+ {.compatible = "qcom,msm-pcm-dtmf"},
+ {}
+};
+
+MODULE_DEVICE_TABLE(of, msm_pcm_dtmf_dt_match);
+
+
+static struct platform_driver msm_pcm_driver = {
+ .driver = {
+ .name = "msm-pcm-dtmf",
+ .owner = THIS_MODULE,
+ .of_match_table = msm_pcm_dtmf_dt_match,
+ },
+ .probe = msm_pcm_probe,
+ .remove = msm_pcm_remove,
+};
+
+static int __init msm_soc_platform_init(void)
+{
+ return platform_driver_register(&msm_pcm_driver);
+}
+module_init(msm_soc_platform_init);
+
+static void __exit msm_soc_platform_exit(void)
+{
+ platform_driver_unregister(&msm_pcm_driver);
+}
+module_exit(msm_soc_platform_exit);
+
+MODULE_DESCRIPTION("DTMF platform driver");
+MODULE_LICENSE("GPL v2");