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sound: usb: Map audio format received from QMI client

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Audio format received from QMI client are not one to one
mapped to pcm format defined by ALSA driver. This causes
format mismatch when QMI client request a format not
defined by ALSA driver. Fix this by creating a mapping
between two formats.

Change-Id: I0f08dd57fa39d385369ef4886d12e8ea77c6ebc0
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>
This commit is contained in:
Hemant Kumar 2016-10-13 15:41:55 -07:00
parent bbd8499b43
commit 23b3d4b4de
1 changed files with 76 additions and 1 deletions
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77
sound/usb/usb_audio_qmi_svc.c
View file

@ -147,6 +147,27 @@ enum mem_type {
MEM_XFER_BUF,
};
enum usb_qmi_audio_format {
USB_QMI_PCM_FORMAT_S8 = 0,
USB_QMI_PCM_FORMAT_U8,
USB_QMI_PCM_FORMAT_S16_LE,
USB_QMI_PCM_FORMAT_S16_BE,
USB_QMI_PCM_FORMAT_U16_LE,
USB_QMI_PCM_FORMAT_U16_BE,
USB_QMI_PCM_FORMAT_S24_LE,
USB_QMI_PCM_FORMAT_S24_BE,
USB_QMI_PCM_FORMAT_U24_LE,
USB_QMI_PCM_FORMAT_U24_BE,
USB_QMI_PCM_FORMAT_S24_3LE,
USB_QMI_PCM_FORMAT_S24_3BE,
USB_QMI_PCM_FORMAT_U24_3LE,
USB_QMI_PCM_FORMAT_U24_3BE,
USB_QMI_PCM_FORMAT_S32_LE,
USB_QMI_PCM_FORMAT_S32_BE,
USB_QMI_PCM_FORMAT_U32_LE,
USB_QMI_PCM_FORMAT_U32_BE,
};
static unsigned long uaudio_get_iova(unsigned long *curr_iova,
size_t *curr_iova_size, struct list_head *head, size_t size)
{
@ -767,6 +788,51 @@ static void uaudio_dev_release(struct kref *kref)
wake_up(&dev->disconnect_wq);
}
/* maps audio format received over QMI to asound.h based pcm format */
int map_pcm_format(unsigned int fmt_received)
{
switch (fmt_received) {
case USB_QMI_PCM_FORMAT_S8:
return SNDRV_PCM_FORMAT_S8;
case USB_QMI_PCM_FORMAT_U8:
return SNDRV_PCM_FORMAT_U8;
case USB_QMI_PCM_FORMAT_S16_LE:
return SNDRV_PCM_FORMAT_S16_LE;
case USB_QMI_PCM_FORMAT_S16_BE:
return SNDRV_PCM_FORMAT_S16_BE;
case USB_QMI_PCM_FORMAT_U16_LE:
return SNDRV_PCM_FORMAT_U16_LE;
case USB_QMI_PCM_FORMAT_U16_BE:
return SNDRV_PCM_FORMAT_U16_BE;
case USB_QMI_PCM_FORMAT_S24_LE:
return SNDRV_PCM_FORMAT_S24_LE;
case USB_QMI_PCM_FORMAT_S24_BE:
return SNDRV_PCM_FORMAT_S24_BE;
case USB_QMI_PCM_FORMAT_U24_LE:
return SNDRV_PCM_FORMAT_U24_LE;
case USB_QMI_PCM_FORMAT_U24_BE:
return SNDRV_PCM_FORMAT_U24_BE;
case USB_QMI_PCM_FORMAT_S24_3LE:
return SNDRV_PCM_FORMAT_S24_3LE;
case USB_QMI_PCM_FORMAT_S24_3BE:
return SNDRV_PCM_FORMAT_S24_3BE;
case USB_QMI_PCM_FORMAT_U24_3LE:
return SNDRV_PCM_FORMAT_U24_3LE;
case USB_QMI_PCM_FORMAT_U24_3BE:
return SNDRV_PCM_FORMAT_U24_3BE;
case USB_QMI_PCM_FORMAT_S32_LE:
return SNDRV_PCM_FORMAT_S32_LE;
case USB_QMI_PCM_FORMAT_S32_BE:
return SNDRV_PCM_FORMAT_S32_BE;
case USB_QMI_PCM_FORMAT_U32_LE:
return SNDRV_PCM_FORMAT_U32_LE;
case USB_QMI_PCM_FORMAT_U32_BE:
return SNDRV_PCM_FORMAT_U32_BE;
default:
return -EINVAL;
}
}
static int handle_uaudio_stream_req(void *req_h, void *req)
{
struct qmi_uaudio_stream_req_msg_v01 *req_msg;
@ -775,6 +841,7 @@ static int handle_uaudio_stream_req(void *req_h, void *req)
struct snd_usb_audio *chip = NULL;
struct uaudio_qmi_svc *svc = uaudio_svc;
struct intf_info *info;
int pcm_format;
u8 pcm_card_num, pcm_dev_num, direction;
int intf_num = -1, ret = 0;
@ -802,6 +869,14 @@ static int handle_uaudio_stream_req(void *req_h, void *req)
goto response;
}
pcm_format = map_pcm_format(req_msg->audio_format);
if (pcm_format == -EINVAL) {
pr_err("%s: unsupported pcm format received %d\n",
__func__, req_msg->audio_format);
ret = -EINVAL;
goto response;
}
subs = find_snd_usb_substream(pcm_card_num, pcm_dev_num, direction,
&chip, uaudio_disconnect_cb);
if (!subs || !chip || atomic_read(&chip->shutdown)) {
@ -820,7 +895,7 @@ static int handle_uaudio_stream_req(void *req_h, void *req)
goto response;
}
subs->pcm_format = req_msg->audio_format;
subs->pcm_format = pcm_format;
subs->channels = req_msg->number_of_ch;
subs->cur_rate = req_msg->bit_rate;