diff options
Diffstat (limited to 'drivers/usb/gadget/function/f_uac2.c')
| -rw-r--r-- | drivers/usb/gadget/function/f_uac2.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/usb/gadget/function/f_uac2.c b/drivers/usb/gadget/function/f_uac2.c index 321e6c05ba93..ae29ff2b2b68 100644 --- a/drivers/usb/gadget/function/f_uac2.c +++ b/drivers/usb/gadget/function/f_uac2.c @@ -584,8 +584,11 @@ static int set_ep_max_packet_size(const struct f_uac2_opts *uac2_opts, ssize = uac2_opts->c_ssize; } + if (!is_playback && (uac2_opts->c_sync == USB_ENDPOINT_SYNC_ASYNC)) + srate = srate * (1000 + uac2_opts->fb_max) / 1000; + max_size_bw = num_channels(chmask) * ssize * - ((srate / (factor / (1 << (ep_desc->bInterval - 1)))) + 1); + DIV_ROUND_UP(srate, factor / (1 << (ep_desc->bInterval - 1))); ep_desc->wMaxPacketSize = cpu_to_le16(min_t(u16, max_size_bw, max_size_ep)); @@ -957,6 +960,7 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) agdev->params.c_srate = uac2_opts->c_srate; agdev->params.c_ssize = uac2_opts->c_ssize; agdev->params.req_number = uac2_opts->req_number; + agdev->params.fb_max = uac2_opts->fb_max; ret = g_audio_setup(agdev, "UAC2 PCM", "UAC2_Gadget"); if (ret) goto err_free_descs; @@ -1329,6 +1333,7 @@ UAC2_ATTRIBUTE(c_srate); UAC2_ATTRIBUTE_SYNC(c_sync); UAC2_ATTRIBUTE(c_ssize); UAC2_ATTRIBUTE(req_number); +UAC2_ATTRIBUTE(fb_max); static struct configfs_attribute *f_uac2_attrs[] = { &f_uac2_opts_attr_p_chmask, @@ -1339,6 +1344,7 @@ static struct configfs_attribute *f_uac2_attrs[] = { &f_uac2_opts_attr_c_ssize, &f_uac2_opts_attr_c_sync, &f_uac2_opts_attr_req_number, + &f_uac2_opts_attr_fb_max, NULL, }; @@ -1378,6 +1384,7 @@ static struct usb_function_instance *afunc_alloc_inst(void) opts->c_ssize = UAC2_DEF_CSSIZE; opts->c_sync = UAC2_DEF_CSYNC; opts->req_number = UAC2_DEF_REQ_NUM; + opts->fb_max = UAC2_DEF_FB_MAX; return &opts->func_inst; } |