Initial Contribution
msm-2.6.38: tag AU_LINUX_ANDROID_GINGERBREAD.02.03.04.00.142
Signed-off-by: Bryan Huntsman <bryanh@codeaurora.org>
diff --git a/arch/arm/mach-msm/qdsp6/pcm_in.c b/arch/arm/mach-msm/qdsp6/pcm_in.c
new file mode 100644
index 0000000..c6bddb8
--- /dev/null
+++ b/arch/arm/mach-msm/qdsp6/pcm_in.c
@@ -0,0 +1,263 @@
+/* arch/arm/mach-msm/qdsp6/pcm_in.c
+ *
+ * Copyright (C) 2009 Google, Inc.
+ * Copyright (C) 2009 HTC Corporation
+ *
+ * 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/slab.h>
+#include <linux/fs.h>
+#include <linux/module.h>
+#include <linux/miscdevice.h>
+#include <linux/mutex.h>
+#include <linux/sched.h>
+#include <linux/wait.h>
+#include <linux/uaccess.h>
+
+#include <linux/msm_audio.h>
+
+#include <mach/msm_qdsp6_audio.h>
+#include <mach/debug_mm.h>
+
+struct pcm {
+ struct audio_client *ac;
+ uint32_t sample_rate;
+ uint32_t channel_count;
+ uint32_t buffer_size;
+ uint32_t rec_mode;
+};
+
+#define BUFSZ (256)
+
+void audio_client_dump(struct audio_client *ac);
+
+static long q6_in_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct pcm *pcm = file->private_data;
+ int rc = 0;
+
+ switch (cmd) {
+ case AUDIO_SET_VOLUME:
+ pr_debug("[%s:%s] SET_VOLUME\n", __MM_FILE__, __func__);
+ break;
+ case AUDIO_GET_STATS: {
+ struct msm_audio_stats stats;
+ pr_debug("[%s:%s] GET_STATS\n", __MM_FILE__, __func__);
+ memset(&stats, 0, sizeof(stats));
+ if (copy_to_user((void*) arg, &stats, sizeof(stats)))
+ return -EFAULT;
+ return 0;
+ }
+ case AUDIO_START: {
+ uint32_t acdb_id;
+ pr_debug("[%s:%s] AUDIO_START\n", __MM_FILE__, __func__);
+ rc = 0;
+
+ if (arg == 0) {
+ acdb_id = 0;
+ } else if (copy_from_user(&acdb_id, (void*) arg, sizeof(acdb_id))) {
+ rc = -EFAULT;
+ break;
+ }
+
+ if (pcm->ac) {
+ pr_err("[%s:%s] active session already existing\n",
+ __MM_FILE__, __func__);
+ rc = -EBUSY;
+ } else {
+ pcm->ac = q6audio_open_pcm(pcm->buffer_size,
+ pcm->sample_rate, pcm->channel_count,
+ pcm->rec_mode, acdb_id);
+ if (!pcm->ac) {
+ pr_err("[%s:%s] pcm open session failed\n",
+ __MM_FILE__, __func__);
+ rc = -ENOMEM;
+ }
+ }
+ break;
+ }
+ case AUDIO_STOP:
+ pr_debug("[%s:%s] AUDIO_STOP\n", __MM_FILE__, __func__);
+ break;
+ case AUDIO_FLUSH:
+ break;
+ case AUDIO_SET_CONFIG: {
+ struct msm_audio_config config;
+ if (copy_from_user(&config, (void*) arg, sizeof(config))) {
+ rc = -EFAULT;
+ break;
+ }
+ pr_debug("[%s:%s] SET_CONFIG: samplerate = %d, channels = %d\n",
+ __MM_FILE__, __func__, config.sample_rate,
+ config.channel_count);
+ if (!config.channel_count || config.channel_count > 2) {
+ rc = -EINVAL;
+ pr_err("[%s:%s] invalid channelcount %d\n",
+ __MM_FILE__, __func__, config.channel_count);
+ break;
+ }
+ if (config.sample_rate < 8000 || config.sample_rate > 48000) {
+ rc = -EINVAL;
+ pr_err("[%s:%s] invalid samplerate %d\n", __MM_FILE__,
+ __func__, config.sample_rate);
+ break;
+ }
+ if (config.buffer_size < 128 || config.buffer_size > 8192) {
+ rc = -EINVAL;
+ pr_err("[%s:%s] invalid buffsize %d\n", __MM_FILE__,
+ __func__, config.buffer_size);
+ break;
+ }
+
+ pcm->sample_rate = config.sample_rate;
+ pcm->channel_count = config.channel_count;
+ pcm->buffer_size = config.buffer_size;
+ break;
+ }
+ case AUDIO_SET_INCALL: {
+ struct msm_voicerec_mode voicerec_mode;
+ pr_debug("[%s:%s] SET_INCALL\n", __MM_FILE__, __func__);
+ if (copy_from_user(&voicerec_mode, (void *)arg,
+ sizeof(struct msm_voicerec_mode)))
+ return -EFAULT;
+ if (voicerec_mode.rec_mode != AUDIO_FLAG_READ &&
+ voicerec_mode.rec_mode != AUDIO_FLAG_INCALL_MIXED) {
+ pcm->rec_mode = AUDIO_FLAG_READ;
+ pr_err("[%s:%s] invalid rec_mode\n", __MM_FILE__,
+ __func__);
+ rc = -EINVAL;
+ } else
+ pcm->rec_mode = voicerec_mode.rec_mode;
+ break;
+ }
+ case AUDIO_GET_CONFIG: {
+ struct msm_audio_config config;
+ config.buffer_size = pcm->buffer_size;
+ config.buffer_count = 2;
+ config.sample_rate = pcm->sample_rate;
+ config.channel_count = pcm->channel_count;
+ config.unused[0] = 0;
+ config.unused[1] = 0;
+ config.unused[2] = 0;
+ if (copy_to_user((void*) arg, &config, sizeof(config))) {
+ rc = -EFAULT;
+ }
+ pr_debug("[%s:%s] GET_CONFIG: samplerate = %d, channels = %d\n",
+ __MM_FILE__, __func__, config.sample_rate,
+ config.channel_count);
+ break;
+ }
+ default:
+ rc = -EINVAL;
+ }
+ pr_debug("[%s:%s] rc = %d\n", __MM_FILE__, __func__, rc);
+ return rc;
+}
+
+static int q6_in_open(struct inode *inode, struct file *file)
+{
+ struct pcm *pcm;
+
+ pr_info("[%s:%s] open\n", __MM_FILE__, __func__);
+ pcm = kzalloc(sizeof(struct pcm), GFP_KERNEL);
+
+ if (!pcm)
+ return -ENOMEM;
+
+ pcm->channel_count = 1;
+ pcm->sample_rate = 8000;
+ pcm->buffer_size = BUFSZ;
+ pcm->rec_mode = AUDIO_FLAG_READ;
+ file->private_data = pcm;
+ return 0;
+}
+
+static ssize_t q6_in_read(struct file *file, char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct pcm *pcm = file->private_data;
+ struct audio_client *ac;
+ struct audio_buffer *ab;
+ const char __user *start = buf;
+ int xfer;
+ int res;
+
+ pr_debug("[%s:%s] count = %d\n", __MM_FILE__, __func__, count);
+ ac = pcm->ac;
+ if (!ac) {
+ res = -ENODEV;
+ goto fail;
+ }
+ while (count > 0) {
+ ab = ac->buf + ac->cpu_buf;
+
+ if (ab->used)
+ if (!wait_event_timeout(ac->wait, (ab->used == 0), 5*HZ)) {
+ audio_client_dump(ac);
+ pr_err("[%s:%s] timeout. dsp dead?\n",
+ __MM_FILE__, __func__);
+ q6audio_dsp_not_responding();
+ }
+ pr_debug("[%s:%s] ab->data = %p, cpu_buf = %d", __MM_FILE__,
+ __func__, ab->data, ac->cpu_buf);
+ xfer = count;
+ if (xfer > ab->size)
+ xfer = ab->size;
+
+ if (copy_to_user(buf, ab->data, xfer)) {
+ res = -EFAULT;
+ goto fail;
+ }
+
+ buf += xfer;
+ count -= xfer;
+
+ ab->used = 1;
+ q6audio_read(ac, ab);
+ ac->cpu_buf ^= 1;
+ }
+fail:
+ res = buf - start;
+ return res;
+}
+
+static int q6_in_release(struct inode *inode, struct file *file)
+{
+
+ int rc = 0;
+ struct pcm *pcm = file->private_data;
+ if (pcm->ac)
+ rc = q6audio_close(pcm->ac);
+ kfree(pcm);
+ pr_info("[%s:%s] release\n", __MM_FILE__, __func__);
+ return rc;
+}
+
+static struct file_operations q6_in_fops = {
+ .owner = THIS_MODULE,
+ .open = q6_in_open,
+ .read = q6_in_read,
+ .release = q6_in_release,
+ .unlocked_ioctl = q6_in_ioctl,
+};
+
+struct miscdevice q6_in_misc = {
+ .minor = MISC_DYNAMIC_MINOR,
+ .name = "msm_pcm_in",
+ .fops = &q6_in_fops,
+};
+
+static int __init q6_in_init(void) {
+ return misc_register(&q6_in_misc);
+}
+
+device_initcall(q6_in_init);