From: Jing Leng <[email protected]>
Currently uac1 only supports high speed.
Signed-off-by: Jing Leng <[email protected]>
---
drivers/usb/gadget/function/f_uac1.c | 276 ++++++++++++++++++++++-----
1 file changed, 225 insertions(+), 51 deletions(-)
diff --git a/drivers/usb/gadget/function/f_uac1.c b/drivers/usb/gadget/function/f_uac1.c
index 03f50643fbba..16b21fa1e709 100644
--- a/drivers/usb/gadget/function/f_uac1.c
+++ b/drivers/usb/gadget/function/f_uac1.c
@@ -123,6 +123,15 @@ static struct uac_feature_unit_descriptor *in_feature_unit_desc;
static struct uac_feature_unit_descriptor *out_feature_unit_desc;
/* AC IN Interrupt Endpoint */
+static struct usb_endpoint_descriptor fs_int_ep_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bEndpointAddress = USB_DIR_IN,
+ .bmAttributes = USB_ENDPOINT_XFER_INT,
+ .wMaxPacketSize = cpu_to_le16(2),
+ .bInterval = 1,
+};
+
static struct usb_endpoint_descriptor ac_int_ep_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
@@ -132,6 +141,14 @@ static struct usb_endpoint_descriptor ac_int_ep_desc = {
.bInterval = 4,
};
+struct usb_ss_ep_comp_descriptor ac_int_ep_desc_comp = {
+ .bLength = sizeof(ac_int_ep_desc_comp),
+ .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
+ .bMaxBurst = 0,
+ .bmAttributes = 0,
+ .wBytesPerInterval = cpu_to_le16(2),
+};
+
/* B.4.1 Standard AS Interface Descriptor */
static struct usb_interface_descriptor as_out_interface_alt_0_desc = {
.bLength = USB_DT_INTERFACE_SIZE,
@@ -201,6 +218,16 @@ static struct uac_format_type_i_discrete_descriptor_1 as_out_type_i_desc = {
};
/* Standard ISO OUT Endpoint Descriptor */
+static struct usb_endpoint_descriptor fs_out_ep_desc = {
+ .bLength = USB_DT_ENDPOINT_AUDIO_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bEndpointAddress = USB_DIR_OUT,
+ .bmAttributes = USB_ENDPOINT_SYNC_ADAPTIVE
+ | USB_ENDPOINT_XFER_ISOC,
+ .wMaxPacketSize = cpu_to_le16(UAC1_OUT_EP_MAX_PACKET_SIZE),
+ .bInterval = 1,
+};
+
static struct usb_endpoint_descriptor as_out_ep_desc = {
.bLength = USB_DT_ENDPOINT_AUDIO_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
@@ -211,6 +238,14 @@ static struct usb_endpoint_descriptor as_out_ep_desc = {
.bInterval = 4,
};
+static struct usb_ss_ep_comp_descriptor as_out_ep_desc_comp = {
+ .bLength = sizeof(as_out_ep_desc_comp),
+ .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
+ .bMaxBurst = 0,
+ .bmAttributes = 0,
+ .wBytesPerInterval = cpu_to_le16(UAC1_OUT_EP_MAX_PACKET_SIZE),
+};
+
/* Class-specific AS ISO OUT Endpoint Descriptor */
static struct uac_iso_endpoint_descriptor as_iso_out_desc = {
.bLength = UAC_ISO_ENDPOINT_DESC_SIZE,
@@ -231,7 +266,17 @@ static struct uac_format_type_i_discrete_descriptor_1 as_in_type_i_desc = {
.bSamFreqType = 1,
};
-/* Standard ISO OUT Endpoint Descriptor */
+/* Standard ISO IN Endpoint Descriptor */
+static struct usb_endpoint_descriptor fs_in_ep_desc = {
+ .bLength = USB_DT_ENDPOINT_AUDIO_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bEndpointAddress = USB_DIR_IN,
+ .bmAttributes = USB_ENDPOINT_SYNC_ASYNC
+ | USB_ENDPOINT_XFER_ISOC,
+ .wMaxPacketSize = cpu_to_le16(UAC1_OUT_EP_MAX_PACKET_SIZE),
+ .bInterval = 1,
+};
+
static struct usb_endpoint_descriptor as_in_ep_desc = {
.bLength = USB_DT_ENDPOINT_AUDIO_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
@@ -242,6 +287,14 @@ static struct usb_endpoint_descriptor as_in_ep_desc = {
.bInterval = 4,
};
+static struct usb_ss_ep_comp_descriptor as_in_ep_desc_comp = {
+ .bLength = sizeof(as_in_ep_desc_comp),
+ .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
+ .bMaxBurst = 0,
+ .bmAttributes = 0,
+ .wBytesPerInterval = cpu_to_le16(UAC1_OUT_EP_MAX_PACKET_SIZE),
+};
+
/* Class-specific AS ISO OUT Endpoint Descriptor */
static struct uac_iso_endpoint_descriptor as_iso_in_desc = {
.bLength = UAC_ISO_ENDPOINT_DESC_SIZE,
@@ -252,7 +305,41 @@ static struct uac_iso_endpoint_descriptor as_iso_in_desc = {
.wLockDelay = 0,
};
-static struct usb_descriptor_header *f_audio_desc[] = {
+static struct usb_descriptor_header *fs_audio_desc[] = {
+ (struct usb_descriptor_header *)&ac_interface_desc,
+ (struct usb_descriptor_header *)&ac_header_desc,
+
+ (struct usb_descriptor_header *)&usb_out_it_desc,
+ (struct usb_descriptor_header *)&io_out_ot_desc,
+ (struct usb_descriptor_header *)&out_feature_unit_desc,
+
+ (struct usb_descriptor_header *)&io_in_it_desc,
+ (struct usb_descriptor_header *)&usb_in_ot_desc,
+ (struct usb_descriptor_header *)&in_feature_unit_desc,
+
+ (struct usb_descriptor_header *)&fs_int_ep_desc,
+
+ (struct usb_descriptor_header *)&as_out_interface_alt_0_desc,
+ (struct usb_descriptor_header *)&as_out_interface_alt_1_desc,
+ (struct usb_descriptor_header *)&as_out_header_desc,
+
+ (struct usb_descriptor_header *)&as_out_type_i_desc,
+
+ (struct usb_descriptor_header *)&fs_out_ep_desc,
+ (struct usb_descriptor_header *)&as_iso_out_desc,
+
+ (struct usb_descriptor_header *)&as_in_interface_alt_0_desc,
+ (struct usb_descriptor_header *)&as_in_interface_alt_1_desc,
+ (struct usb_descriptor_header *)&as_in_header_desc,
+
+ (struct usb_descriptor_header *)&as_in_type_i_desc,
+
+ (struct usb_descriptor_header *)&fs_in_ep_desc,
+ (struct usb_descriptor_header *)&as_iso_in_desc,
+ NULL,
+};
+
+static struct usb_descriptor_header *hs_audio_desc[] = {
(struct usb_descriptor_header *)&ac_interface_desc,
(struct usb_descriptor_header *)&ac_header_desc,
@@ -286,6 +373,43 @@ static struct usb_descriptor_header *f_audio_desc[] = {
NULL,
};
+static struct usb_descriptor_header *ss_audio_desc[] = {
+ (struct usb_descriptor_header *)&ac_interface_desc,
+ (struct usb_descriptor_header *)&ac_header_desc,
+
+ (struct usb_descriptor_header *)&usb_out_it_desc,
+ (struct usb_descriptor_header *)&io_out_ot_desc,
+ (struct usb_descriptor_header *)&out_feature_unit_desc,
+
+ (struct usb_descriptor_header *)&io_in_it_desc,
+ (struct usb_descriptor_header *)&usb_in_ot_desc,
+ (struct usb_descriptor_header *)&in_feature_unit_desc,
+
+ (struct usb_descriptor_header *)&ac_int_ep_desc,
+ (struct usb_descriptor_header *)&ac_int_ep_desc_comp,
+
+ (struct usb_descriptor_header *)&as_out_interface_alt_0_desc,
+ (struct usb_descriptor_header *)&as_out_interface_alt_1_desc,
+ (struct usb_descriptor_header *)&as_out_header_desc,
+
+ (struct usb_descriptor_header *)&as_out_type_i_desc,
+
+ (struct usb_descriptor_header *)&as_out_ep_desc,
+ (struct usb_descriptor_header *)&as_out_ep_desc_comp,
+ (struct usb_descriptor_header *)&as_iso_out_desc,
+
+ (struct usb_descriptor_header *)&as_in_interface_alt_0_desc,
+ (struct usb_descriptor_header *)&as_in_interface_alt_1_desc,
+ (struct usb_descriptor_header *)&as_in_header_desc,
+
+ (struct usb_descriptor_header *)&as_in_type_i_desc,
+
+ (struct usb_descriptor_header *)&as_in_ep_desc,
+ (struct usb_descriptor_header *)&as_in_ep_desc_comp,
+ (struct usb_descriptor_header *)&as_iso_in_desc,
+ NULL,
+};
+
enum {
STR_AC_IF,
STR_USB_OUT_IT,
@@ -329,6 +453,89 @@ static struct usb_gadget_strings *uac1_strings[] = {
NULL,
};
+/* Use macro to overcome line length limitation */
+#define USBDHDR(p) ((struct usb_descriptor_header *)(p))
+
+static void setup_headers(struct f_uac1_opts *opts,
+ struct usb_descriptor_header **headers,
+ enum usb_device_speed speed)
+{
+ struct usb_ss_ep_comp_descriptor *epout_desc_comp = NULL;
+ struct usb_ss_ep_comp_descriptor *epin_desc_comp = NULL;
+ struct usb_ss_ep_comp_descriptor *ep_int_desc_comp = NULL;
+ struct usb_endpoint_descriptor *epout_desc;
+ struct usb_endpoint_descriptor *epin_desc;
+ struct usb_endpoint_descriptor *ep_int_desc;
+ int i;
+
+ switch (speed) {
+ case USB_SPEED_FULL:
+ epout_desc = &fs_out_ep_desc;
+ epin_desc = &fs_in_ep_desc;
+ ep_int_desc = &fs_int_ep_desc;
+ break;
+ case USB_SPEED_HIGH:
+ epout_desc = &as_out_ep_desc;
+ epin_desc = &as_in_ep_desc;
+ ep_int_desc = &ac_int_ep_desc;
+ break;
+ default:
+ epout_desc = &as_out_ep_desc;
+ epout_desc_comp = &as_out_ep_desc_comp;
+ epin_desc = &as_in_ep_desc;
+ epin_desc_comp = &as_in_ep_desc_comp;
+ ep_int_desc = &ac_int_ep_desc;
+ ep_int_desc_comp = &ac_int_ep_desc_comp;
+ break;
+ }
+
+ i = 0;
+ headers[i++] = USBDHDR(&ac_interface_desc);
+ headers[i++] = USBDHDR(ac_header_desc);
+
+ if (EPOUT_EN(opts)) {
+ headers[i++] = USBDHDR(&usb_out_it_desc);
+ headers[i++] = USBDHDR(&io_out_ot_desc);
+ if (FUOUT_EN(opts))
+ headers[i++] = USBDHDR(out_feature_unit_desc);
+ }
+
+ if (EPIN_EN(opts)) {
+ headers[i++] = USBDHDR(&io_in_it_desc);
+ headers[i++] = USBDHDR(&usb_in_ot_desc);
+ if (FUIN_EN(opts))
+ headers[i++] = USBDHDR(in_feature_unit_desc);
+ }
+
+ if (FUOUT_EN(opts) || FUIN_EN(opts)) {
+ headers[i++] = USBDHDR(ep_int_desc);
+ if (ep_int_desc_comp)
+ headers[i++] = USBDHDR(ep_int_desc_comp);
+ }
+
+ if (EPOUT_EN(opts)) {
+ headers[i++] = USBDHDR(&as_out_interface_alt_0_desc);
+ headers[i++] = USBDHDR(&as_out_interface_alt_1_desc);
+ headers[i++] = USBDHDR(&as_out_header_desc);
+ headers[i++] = USBDHDR(&as_out_type_i_desc);
+ headers[i++] = USBDHDR(epout_desc);
+ if (epout_desc_comp)
+ headers[i++] = USBDHDR(epout_desc_comp);
+ headers[i++] = USBDHDR(&as_iso_out_desc);
+ }
+ if (EPIN_EN(opts)) {
+ headers[i++] = USBDHDR(&as_in_interface_alt_0_desc);
+ headers[i++] = USBDHDR(&as_in_interface_alt_1_desc);
+ headers[i++] = USBDHDR(&as_in_header_desc);
+ headers[i++] = USBDHDR(&as_in_type_i_desc);
+ headers[i++] = USBDHDR(epin_desc);
+ if (epin_desc_comp)
+ headers[i++] = USBDHDR(epin_desc_comp);
+ headers[i++] = USBDHDR(&as_iso_in_desc);
+ }
+ headers[i] = NULL;
+}
+
/*
* This function is an ALSA sound card following USB Audio Class Spec 1.0.
*/
@@ -891,7 +1098,6 @@ static int f_audio_get_alt(struct usb_function *f, unsigned intf)
return -EINVAL;
}
-
static void f_audio_disable(struct usb_function *f)
{
struct f_uac1 *uac1 = func_to_uac1(f);
@@ -957,9 +1163,6 @@ uac1_ac_header_descriptor *build_ac_header_desc(struct f_uac1_opts *opts)
return ac_desc;
}
-/* Use macro to overcome line length limitation */
-#define USBDHDR(p) (struct usb_descriptor_header *)(p)
-
static void setup_descriptor(struct f_uac1_opts *opts)
{
/* patch descriptors */
@@ -1015,44 +1218,9 @@ static void setup_descriptor(struct f_uac1_opts *opts)
ac_header_desc->wTotalLength = cpu_to_le16(len);
}
- i = 0;
- f_audio_desc[i++] = USBDHDR(&ac_interface_desc);
- f_audio_desc[i++] = USBDHDR(ac_header_desc);
-
- if (EPOUT_EN(opts)) {
- f_audio_desc[i++] = USBDHDR(&usb_out_it_desc);
- f_audio_desc[i++] = USBDHDR(&io_out_ot_desc);
- if (FUOUT_EN(opts))
- f_audio_desc[i++] = USBDHDR(out_feature_unit_desc);
- }
-
- if (EPIN_EN(opts)) {
- f_audio_desc[i++] = USBDHDR(&io_in_it_desc);
- f_audio_desc[i++] = USBDHDR(&usb_in_ot_desc);
- if (FUIN_EN(opts))
- f_audio_desc[i++] = USBDHDR(in_feature_unit_desc);
- }
-
- if (FUOUT_EN(opts) || FUIN_EN(opts))
- f_audio_desc[i++] = USBDHDR(&ac_int_ep_desc);
-
- if (EPOUT_EN(opts)) {
- f_audio_desc[i++] = USBDHDR(&as_out_interface_alt_0_desc);
- f_audio_desc[i++] = USBDHDR(&as_out_interface_alt_1_desc);
- f_audio_desc[i++] = USBDHDR(&as_out_header_desc);
- f_audio_desc[i++] = USBDHDR(&as_out_type_i_desc);
- f_audio_desc[i++] = USBDHDR(&as_out_ep_desc);
- f_audio_desc[i++] = USBDHDR(&as_iso_out_desc);
- }
- if (EPIN_EN(opts)) {
- f_audio_desc[i++] = USBDHDR(&as_in_interface_alt_0_desc);
- f_audio_desc[i++] = USBDHDR(&as_in_interface_alt_1_desc);
- f_audio_desc[i++] = USBDHDR(&as_in_header_desc);
- f_audio_desc[i++] = USBDHDR(&as_in_type_i_desc);
- f_audio_desc[i++] = USBDHDR(&as_in_ep_desc);
- f_audio_desc[i++] = USBDHDR(&as_iso_in_desc);
- }
- f_audio_desc[i] = NULL;
+ setup_headers(opts, fs_audio_desc, USB_SPEED_FULL);
+ setup_headers(opts, hs_audio_desc, USB_SPEED_HIGH);
+ setup_headers(opts, ss_audio_desc, USB_SPEED_SUPER);
}
static int f_audio_validate_opts(struct g_audio *audio, struct device *dev)
@@ -1264,7 +1432,6 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f)
if (!ep)
goto err_free_fu;
uac1->int_ep = ep;
- uac1->int_ep->desc = &ac_int_ep_desc;
ac_interface_desc.bNumEndpoints = 1;
}
@@ -1275,7 +1442,6 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f)
if (!ep)
goto err_free_fu;
audio->out_ep = ep;
- audio->out_ep->desc = &as_out_ep_desc;
}
if (EPIN_EN(audio_opts)) {
@@ -1283,19 +1449,27 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f)
if (!ep)
goto err_free_fu;
audio->in_ep = ep;
- audio->in_ep->desc = &as_in_ep_desc;
}
+ /* FS endpoint addresses are copied from autoconfigured HS descriptors */
+ fs_int_ep_desc.bEndpointAddress = ac_int_ep_desc.bEndpointAddress;
+ fs_out_ep_desc.bEndpointAddress = as_out_ep_desc.bEndpointAddress;
+ fs_in_ep_desc.bEndpointAddress = as_in_ep_desc.bEndpointAddress;
+
setup_descriptor(audio_opts);
/* copy descriptors, and track endpoint copies */
- status = usb_assign_descriptors(f, f_audio_desc, f_audio_desc, NULL,
- NULL);
+ status = usb_assign_descriptors(f, fs_audio_desc, hs_audio_desc,
+ ss_audio_desc, ss_audio_desc);
if (status)
goto err_free_fu;
- audio->out_ep_maxpsize = le16_to_cpu(as_out_ep_desc.wMaxPacketSize);
- audio->in_ep_maxpsize = le16_to_cpu(as_in_ep_desc.wMaxPacketSize);
+ audio->out_ep_maxpsize = max_t(u16,
+ le16_to_cpu(fs_out_ep_desc.wMaxPacketSize),
+ le16_to_cpu(as_out_ep_desc.wMaxPacketSize));
+ audio->in_ep_maxpsize = max_t(u16,
+ le16_to_cpu(fs_in_ep_desc.wMaxPacketSize),
+ le16_to_cpu(as_in_ep_desc.wMaxPacketSize));
audio->params.c_chmask = audio_opts->c_chmask;
audio->params.c_srate = audio_opts->c_srate;
audio->params.c_ssize = audio_opts->c_ssize;
--
2.17.1
On Mon, Feb 14, 2022 at 03:43:52PM +0800, [email protected] wrote:
> From: Jing Leng <[email protected]>
>
> Currently uac1 only supports high speed.
That does not describe what you are doing here, nor why you are doing
it.
You sent a number of different patches, when you fix them up, please
resend them as a patch series.
thanks,
greg k-h
From: Jing Leng <[email protected]>
On page 61 of the UAC1 specification (
https://www.usb.org/sites/default/files/audio10.pdf),
bInterval is interval for polling endpoint for data transfers
expressed in milliseconds, must be set to 1.
On page 47 of the USB2.0 specification (
https://www.usb.org/sites/default/files/usb_20_20211008.zip),
An isochronous endpoint must specify its required bus access period.
Full-/high-speed endpoints must specify a desired period as
(2^(bInterval-1)) x F, where bInterval is in the range one to
(and including) 16 and F is 125 μs for high-speed and 1ms for full-speed.
On page 362 of the USB3.2 specification (
https://usb.org/sites/default/files/usb_32_20210125.zip),
The 'SuperSpeed Endpoint Companion Descriptor' descriptor shall only be
returned by Enhanced SuperSpeed devices that are operating at Gen X speed.
Each endpoint described in an interface is followed by a 'SuperSpeed
Endpoint Companion Descriptor'.
Currently uac1 driver doesn't set bInterval to 1 in full speed transfer
and doesn't have a 'SuperSpeed Endpoint Companion Descriptor' behind
'Standard Endpoint Descriptor'.
So we should set bInterval to 1 in full speed transfer and set it to 4
in other speed transfers, and we should add 'SuperSpeed Endpoint Companion
Descriptor' behind 'Standard Endpoint Descriptor' for superspeed transfer.
Signed-off-by: Jing Leng <[email protected]>
---
drivers/usb/gadget/function/f_uac1.c | 276 ++++++++++++++++++++++-----
1 file changed, 225 insertions(+), 51 deletions(-)
diff --git a/drivers/usb/gadget/function/f_uac1.c b/drivers/usb/gadget/function/f_uac1.c
index 03f50643fbba..16b21fa1e709 100644
--- a/drivers/usb/gadget/function/f_uac1.c
+++ b/drivers/usb/gadget/function/f_uac1.c
@@ -123,6 +123,15 @@ static struct uac_feature_unit_descriptor *in_feature_unit_desc;
static struct uac_feature_unit_descriptor *out_feature_unit_desc;
/* AC IN Interrupt Endpoint */
+static struct usb_endpoint_descriptor fs_int_ep_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bEndpointAddress = USB_DIR_IN,
+ .bmAttributes = USB_ENDPOINT_XFER_INT,
+ .wMaxPacketSize = cpu_to_le16(2),
+ .bInterval = 1,
+};
+
static struct usb_endpoint_descriptor ac_int_ep_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
@@ -132,6 +141,14 @@ static struct usb_endpoint_descriptor ac_int_ep_desc = {
.bInterval = 4,
};
+struct usb_ss_ep_comp_descriptor ac_int_ep_desc_comp = {
+ .bLength = sizeof(ac_int_ep_desc_comp),
+ .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
+ .bMaxBurst = 0,
+ .bmAttributes = 0,
+ .wBytesPerInterval = cpu_to_le16(2),
+};
+
/* B.4.1 Standard AS Interface Descriptor */
static struct usb_interface_descriptor as_out_interface_alt_0_desc = {
.bLength = USB_DT_INTERFACE_SIZE,
@@ -201,6 +218,16 @@ static struct uac_format_type_i_discrete_descriptor_1 as_out_type_i_desc = {
};
/* Standard ISO OUT Endpoint Descriptor */
+static struct usb_endpoint_descriptor fs_out_ep_desc = {
+ .bLength = USB_DT_ENDPOINT_AUDIO_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bEndpointAddress = USB_DIR_OUT,
+ .bmAttributes = USB_ENDPOINT_SYNC_ADAPTIVE
+ | USB_ENDPOINT_XFER_ISOC,
+ .wMaxPacketSize = cpu_to_le16(UAC1_OUT_EP_MAX_PACKET_SIZE),
+ .bInterval = 1,
+};
+
static struct usb_endpoint_descriptor as_out_ep_desc = {
.bLength = USB_DT_ENDPOINT_AUDIO_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
@@ -211,6 +238,14 @@ static struct usb_endpoint_descriptor as_out_ep_desc = {
.bInterval = 4,
};
+static struct usb_ss_ep_comp_descriptor as_out_ep_desc_comp = {
+ .bLength = sizeof(as_out_ep_desc_comp),
+ .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
+ .bMaxBurst = 0,
+ .bmAttributes = 0,
+ .wBytesPerInterval = cpu_to_le16(UAC1_OUT_EP_MAX_PACKET_SIZE),
+};
+
/* Class-specific AS ISO OUT Endpoint Descriptor */
static struct uac_iso_endpoint_descriptor as_iso_out_desc = {
.bLength = UAC_ISO_ENDPOINT_DESC_SIZE,
@@ -231,7 +266,17 @@ static struct uac_format_type_i_discrete_descriptor_1 as_in_type_i_desc = {
.bSamFreqType = 1,
};
-/* Standard ISO OUT Endpoint Descriptor */
+/* Standard ISO IN Endpoint Descriptor */
+static struct usb_endpoint_descriptor fs_in_ep_desc = {
+ .bLength = USB_DT_ENDPOINT_AUDIO_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bEndpointAddress = USB_DIR_IN,
+ .bmAttributes = USB_ENDPOINT_SYNC_ASYNC
+ | USB_ENDPOINT_XFER_ISOC,
+ .wMaxPacketSize = cpu_to_le16(UAC1_OUT_EP_MAX_PACKET_SIZE),
+ .bInterval = 1,
+};
+
static struct usb_endpoint_descriptor as_in_ep_desc = {
.bLength = USB_DT_ENDPOINT_AUDIO_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
@@ -242,6 +287,14 @@ static struct usb_endpoint_descriptor as_in_ep_desc = {
.bInterval = 4,
};
+static struct usb_ss_ep_comp_descriptor as_in_ep_desc_comp = {
+ .bLength = sizeof(as_in_ep_desc_comp),
+ .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
+ .bMaxBurst = 0,
+ .bmAttributes = 0,
+ .wBytesPerInterval = cpu_to_le16(UAC1_OUT_EP_MAX_PACKET_SIZE),
+};
+
/* Class-specific AS ISO OUT Endpoint Descriptor */
static struct uac_iso_endpoint_descriptor as_iso_in_desc = {
.bLength = UAC_ISO_ENDPOINT_DESC_SIZE,
@@ -252,7 +305,41 @@ static struct uac_iso_endpoint_descriptor as_iso_in_desc = {
.wLockDelay = 0,
};
-static struct usb_descriptor_header *f_audio_desc[] = {
+static struct usb_descriptor_header *fs_audio_desc[] = {
+ (struct usb_descriptor_header *)&ac_interface_desc,
+ (struct usb_descriptor_header *)&ac_header_desc,
+
+ (struct usb_descriptor_header *)&usb_out_it_desc,
+ (struct usb_descriptor_header *)&io_out_ot_desc,
+ (struct usb_descriptor_header *)&out_feature_unit_desc,
+
+ (struct usb_descriptor_header *)&io_in_it_desc,
+ (struct usb_descriptor_header *)&usb_in_ot_desc,
+ (struct usb_descriptor_header *)&in_feature_unit_desc,
+
+ (struct usb_descriptor_header *)&fs_int_ep_desc,
+
+ (struct usb_descriptor_header *)&as_out_interface_alt_0_desc,
+ (struct usb_descriptor_header *)&as_out_interface_alt_1_desc,
+ (struct usb_descriptor_header *)&as_out_header_desc,
+
+ (struct usb_descriptor_header *)&as_out_type_i_desc,
+
+ (struct usb_descriptor_header *)&fs_out_ep_desc,
+ (struct usb_descriptor_header *)&as_iso_out_desc,
+
+ (struct usb_descriptor_header *)&as_in_interface_alt_0_desc,
+ (struct usb_descriptor_header *)&as_in_interface_alt_1_desc,
+ (struct usb_descriptor_header *)&as_in_header_desc,
+
+ (struct usb_descriptor_header *)&as_in_type_i_desc,
+
+ (struct usb_descriptor_header *)&fs_in_ep_desc,
+ (struct usb_descriptor_header *)&as_iso_in_desc,
+ NULL,
+};
+
+static struct usb_descriptor_header *hs_audio_desc[] = {
(struct usb_descriptor_header *)&ac_interface_desc,
(struct usb_descriptor_header *)&ac_header_desc,
@@ -286,6 +373,43 @@ static struct usb_descriptor_header *f_audio_desc[] = {
NULL,
};
+static struct usb_descriptor_header *ss_audio_desc[] = {
+ (struct usb_descriptor_header *)&ac_interface_desc,
+ (struct usb_descriptor_header *)&ac_header_desc,
+
+ (struct usb_descriptor_header *)&usb_out_it_desc,
+ (struct usb_descriptor_header *)&io_out_ot_desc,
+ (struct usb_descriptor_header *)&out_feature_unit_desc,
+
+ (struct usb_descriptor_header *)&io_in_it_desc,
+ (struct usb_descriptor_header *)&usb_in_ot_desc,
+ (struct usb_descriptor_header *)&in_feature_unit_desc,
+
+ (struct usb_descriptor_header *)&ac_int_ep_desc,
+ (struct usb_descriptor_header *)&ac_int_ep_desc_comp,
+
+ (struct usb_descriptor_header *)&as_out_interface_alt_0_desc,
+ (struct usb_descriptor_header *)&as_out_interface_alt_1_desc,
+ (struct usb_descriptor_header *)&as_out_header_desc,
+
+ (struct usb_descriptor_header *)&as_out_type_i_desc,
+
+ (struct usb_descriptor_header *)&as_out_ep_desc,
+ (struct usb_descriptor_header *)&as_out_ep_desc_comp,
+ (struct usb_descriptor_header *)&as_iso_out_desc,
+
+ (struct usb_descriptor_header *)&as_in_interface_alt_0_desc,
+ (struct usb_descriptor_header *)&as_in_interface_alt_1_desc,
+ (struct usb_descriptor_header *)&as_in_header_desc,
+
+ (struct usb_descriptor_header *)&as_in_type_i_desc,
+
+ (struct usb_descriptor_header *)&as_in_ep_desc,
+ (struct usb_descriptor_header *)&as_in_ep_desc_comp,
+ (struct usb_descriptor_header *)&as_iso_in_desc,
+ NULL,
+};
+
enum {
STR_AC_IF,
STR_USB_OUT_IT,
@@ -329,6 +453,89 @@ static struct usb_gadget_strings *uac1_strings[] = {
NULL,
};
+/* Use macro to overcome line length limitation */
+#define USBDHDR(p) ((struct usb_descriptor_header *)(p))
+
+static void setup_headers(struct f_uac1_opts *opts,
+ struct usb_descriptor_header **headers,
+ enum usb_device_speed speed)
+{
+ struct usb_ss_ep_comp_descriptor *epout_desc_comp = NULL;
+ struct usb_ss_ep_comp_descriptor *epin_desc_comp = NULL;
+ struct usb_ss_ep_comp_descriptor *ep_int_desc_comp = NULL;
+ struct usb_endpoint_descriptor *epout_desc;
+ struct usb_endpoint_descriptor *epin_desc;
+ struct usb_endpoint_descriptor *ep_int_desc;
+ int i;
+
+ switch (speed) {
+ case USB_SPEED_FULL:
+ epout_desc = &fs_out_ep_desc;
+ epin_desc = &fs_in_ep_desc;
+ ep_int_desc = &fs_int_ep_desc;
+ break;
+ case USB_SPEED_HIGH:
+ epout_desc = &as_out_ep_desc;
+ epin_desc = &as_in_ep_desc;
+ ep_int_desc = &ac_int_ep_desc;
+ break;
+ default:
+ epout_desc = &as_out_ep_desc;
+ epout_desc_comp = &as_out_ep_desc_comp;
+ epin_desc = &as_in_ep_desc;
+ epin_desc_comp = &as_in_ep_desc_comp;
+ ep_int_desc = &ac_int_ep_desc;
+ ep_int_desc_comp = &ac_int_ep_desc_comp;
+ break;
+ }
+
+ i = 0;
+ headers[i++] = USBDHDR(&ac_interface_desc);
+ headers[i++] = USBDHDR(ac_header_desc);
+
+ if (EPOUT_EN(opts)) {
+ headers[i++] = USBDHDR(&usb_out_it_desc);
+ headers[i++] = USBDHDR(&io_out_ot_desc);
+ if (FUOUT_EN(opts))
+ headers[i++] = USBDHDR(out_feature_unit_desc);
+ }
+
+ if (EPIN_EN(opts)) {
+ headers[i++] = USBDHDR(&io_in_it_desc);
+ headers[i++] = USBDHDR(&usb_in_ot_desc);
+ if (FUIN_EN(opts))
+ headers[i++] = USBDHDR(in_feature_unit_desc);
+ }
+
+ if (FUOUT_EN(opts) || FUIN_EN(opts)) {
+ headers[i++] = USBDHDR(ep_int_desc);
+ if (ep_int_desc_comp)
+ headers[i++] = USBDHDR(ep_int_desc_comp);
+ }
+
+ if (EPOUT_EN(opts)) {
+ headers[i++] = USBDHDR(&as_out_interface_alt_0_desc);
+ headers[i++] = USBDHDR(&as_out_interface_alt_1_desc);
+ headers[i++] = USBDHDR(&as_out_header_desc);
+ headers[i++] = USBDHDR(&as_out_type_i_desc);
+ headers[i++] = USBDHDR(epout_desc);
+ if (epout_desc_comp)
+ headers[i++] = USBDHDR(epout_desc_comp);
+ headers[i++] = USBDHDR(&as_iso_out_desc);
+ }
+ if (EPIN_EN(opts)) {
+ headers[i++] = USBDHDR(&as_in_interface_alt_0_desc);
+ headers[i++] = USBDHDR(&as_in_interface_alt_1_desc);
+ headers[i++] = USBDHDR(&as_in_header_desc);
+ headers[i++] = USBDHDR(&as_in_type_i_desc);
+ headers[i++] = USBDHDR(epin_desc);
+ if (epin_desc_comp)
+ headers[i++] = USBDHDR(epin_desc_comp);
+ headers[i++] = USBDHDR(&as_iso_in_desc);
+ }
+ headers[i] = NULL;
+}
+
/*
* This function is an ALSA sound card following USB Audio Class Spec 1.0.
*/
@@ -891,7 +1098,6 @@ static int f_audio_get_alt(struct usb_function *f, unsigned intf)
return -EINVAL;
}
-
static void f_audio_disable(struct usb_function *f)
{
struct f_uac1 *uac1 = func_to_uac1(f);
@@ -957,9 +1163,6 @@ uac1_ac_header_descriptor *build_ac_header_desc(struct f_uac1_opts *opts)
return ac_desc;
}
-/* Use macro to overcome line length limitation */
-#define USBDHDR(p) (struct usb_descriptor_header *)(p)
-
static void setup_descriptor(struct f_uac1_opts *opts)
{
/* patch descriptors */
@@ -1015,44 +1218,9 @@ static void setup_descriptor(struct f_uac1_opts *opts)
ac_header_desc->wTotalLength = cpu_to_le16(len);
}
- i = 0;
- f_audio_desc[i++] = USBDHDR(&ac_interface_desc);
- f_audio_desc[i++] = USBDHDR(ac_header_desc);
-
- if (EPOUT_EN(opts)) {
- f_audio_desc[i++] = USBDHDR(&usb_out_it_desc);
- f_audio_desc[i++] = USBDHDR(&io_out_ot_desc);
- if (FUOUT_EN(opts))
- f_audio_desc[i++] = USBDHDR(out_feature_unit_desc);
- }
-
- if (EPIN_EN(opts)) {
- f_audio_desc[i++] = USBDHDR(&io_in_it_desc);
- f_audio_desc[i++] = USBDHDR(&usb_in_ot_desc);
- if (FUIN_EN(opts))
- f_audio_desc[i++] = USBDHDR(in_feature_unit_desc);
- }
-
- if (FUOUT_EN(opts) || FUIN_EN(opts))
- f_audio_desc[i++] = USBDHDR(&ac_int_ep_desc);
-
- if (EPOUT_EN(opts)) {
- f_audio_desc[i++] = USBDHDR(&as_out_interface_alt_0_desc);
- f_audio_desc[i++] = USBDHDR(&as_out_interface_alt_1_desc);
- f_audio_desc[i++] = USBDHDR(&as_out_header_desc);
- f_audio_desc[i++] = USBDHDR(&as_out_type_i_desc);
- f_audio_desc[i++] = USBDHDR(&as_out_ep_desc);
- f_audio_desc[i++] = USBDHDR(&as_iso_out_desc);
- }
- if (EPIN_EN(opts)) {
- f_audio_desc[i++] = USBDHDR(&as_in_interface_alt_0_desc);
- f_audio_desc[i++] = USBDHDR(&as_in_interface_alt_1_desc);
- f_audio_desc[i++] = USBDHDR(&as_in_header_desc);
- f_audio_desc[i++] = USBDHDR(&as_in_type_i_desc);
- f_audio_desc[i++] = USBDHDR(&as_in_ep_desc);
- f_audio_desc[i++] = USBDHDR(&as_iso_in_desc);
- }
- f_audio_desc[i] = NULL;
+ setup_headers(opts, fs_audio_desc, USB_SPEED_FULL);
+ setup_headers(opts, hs_audio_desc, USB_SPEED_HIGH);
+ setup_headers(opts, ss_audio_desc, USB_SPEED_SUPER);
}
static int f_audio_validate_opts(struct g_audio *audio, struct device *dev)
@@ -1264,7 +1432,6 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f)
if (!ep)
goto err_free_fu;
uac1->int_ep = ep;
- uac1->int_ep->desc = &ac_int_ep_desc;
ac_interface_desc.bNumEndpoints = 1;
}
@@ -1275,7 +1442,6 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f)
if (!ep)
goto err_free_fu;
audio->out_ep = ep;
- audio->out_ep->desc = &as_out_ep_desc;
}
if (EPIN_EN(audio_opts)) {
@@ -1283,19 +1449,27 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f)
if (!ep)
goto err_free_fu;
audio->in_ep = ep;
- audio->in_ep->desc = &as_in_ep_desc;
}
+ /* FS endpoint addresses are copied from autoconfigured HS descriptors */
+ fs_int_ep_desc.bEndpointAddress = ac_int_ep_desc.bEndpointAddress;
+ fs_out_ep_desc.bEndpointAddress = as_out_ep_desc.bEndpointAddress;
+ fs_in_ep_desc.bEndpointAddress = as_in_ep_desc.bEndpointAddress;
+
setup_descriptor(audio_opts);
/* copy descriptors, and track endpoint copies */
- status = usb_assign_descriptors(f, f_audio_desc, f_audio_desc, NULL,
- NULL);
+ status = usb_assign_descriptors(f, fs_audio_desc, hs_audio_desc,
+ ss_audio_desc, ss_audio_desc);
if (status)
goto err_free_fu;
- audio->out_ep_maxpsize = le16_to_cpu(as_out_ep_desc.wMaxPacketSize);
- audio->in_ep_maxpsize = le16_to_cpu(as_in_ep_desc.wMaxPacketSize);
+ audio->out_ep_maxpsize = max_t(u16,
+ le16_to_cpu(fs_out_ep_desc.wMaxPacketSize),
+ le16_to_cpu(as_out_ep_desc.wMaxPacketSize));
+ audio->in_ep_maxpsize = max_t(u16,
+ le16_to_cpu(fs_in_ep_desc.wMaxPacketSize),
+ le16_to_cpu(as_in_ep_desc.wMaxPacketSize));
audio->params.c_chmask = audio_opts->c_chmask;
audio->params.c_srate = audio_opts->c_srate;
audio->params.c_ssize = audio_opts->c_ssize;
--
2.17.1
On Mon, Feb 14, 2022 at 10:05:45PM +0800, [email protected] wrote:
> From: Jing Leng <[email protected]>
>
> On page 61 of the UAC1 specification (
> https://www.usb.org/sites/default/files/audio10.pdf),
> bInterval is interval for polling endpoint for data transfers
> expressed in milliseconds, must be set to 1.
>
> On page 47 of the USB2.0 specification (
> https://www.usb.org/sites/default/files/usb_20_20211008.zip),
> An isochronous endpoint must specify its required bus access period.
> Full-/high-speed endpoints must specify a desired period as
> (2^(bInterval-1)) x F, where bInterval is in the range one to
> (and including) 16 and F is 125 μs for high-speed and 1ms for full-speed.
>
> On page 362 of the USB3.2 specification (
> https://usb.org/sites/default/files/usb_32_20210125.zip),
> The 'SuperSpeed Endpoint Companion Descriptor' descriptor shall only be
> returned by Enhanced SuperSpeed devices that are operating at Gen X speed.
> Each endpoint described in an interface is followed by a 'SuperSpeed
> Endpoint Companion Descriptor'.
>
> Currently uac1 driver doesn't set bInterval to 1 in full speed transfer
> and doesn't have a 'SuperSpeed Endpoint Companion Descriptor' behind
> 'Standard Endpoint Descriptor'.
>
> So we should set bInterval to 1 in full speed transfer and set it to 4
> in other speed transfers, and we should add 'SuperSpeed Endpoint Companion
> Descriptor' behind 'Standard Endpoint Descriptor' for superspeed transfer.
>
> Signed-off-by: Jing Leng <[email protected]>
> ---
> drivers/usb/gadget/function/f_uac1.c | 276 ++++++++++++++++++++++-----
> 1 file changed, 225 insertions(+), 51 deletions(-)
>
> diff --git a/drivers/usb/gadget/function/f_uac1.c b/drivers/usb/gadget/function/f_uac1.c
> index 03f50643fbba..16b21fa1e709 100644
> --- a/drivers/usb/gadget/function/f_uac1.c
> +++ b/drivers/usb/gadget/function/f_uac1.c
> @@ -123,6 +123,15 @@ static struct uac_feature_unit_descriptor *in_feature_unit_desc;
> static struct uac_feature_unit_descriptor *out_feature_unit_desc;
>
> /* AC IN Interrupt Endpoint */
> +static struct usb_endpoint_descriptor fs_int_ep_desc = {
> + .bLength = USB_DT_ENDPOINT_SIZE,
> + .bDescriptorType = USB_DT_ENDPOINT,
> + .bEndpointAddress = USB_DIR_IN,
> + .bmAttributes = USB_ENDPOINT_XFER_INT,
> + .wMaxPacketSize = cpu_to_le16(2),
> + .bInterval = 1,
> +};
> +
> static struct usb_endpoint_descriptor ac_int_ep_desc = {
> .bLength = USB_DT_ENDPOINT_SIZE,
> .bDescriptorType = USB_DT_ENDPOINT,
> @@ -132,6 +141,14 @@ static struct usb_endpoint_descriptor ac_int_ep_desc = {
> .bInterval = 4,
> };
>
> +struct usb_ss_ep_comp_descriptor ac_int_ep_desc_comp = {
> + .bLength = sizeof(ac_int_ep_desc_comp),
> + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
> + .bMaxBurst = 0,
> + .bmAttributes = 0,
> + .wBytesPerInterval = cpu_to_le16(2),
> +};
> +
> /* B.4.1 Standard AS Interface Descriptor */
> static struct usb_interface_descriptor as_out_interface_alt_0_desc = {
> .bLength = USB_DT_INTERFACE_SIZE,
> @@ -201,6 +218,16 @@ static struct uac_format_type_i_discrete_descriptor_1 as_out_type_i_desc = {
> };
>
> /* Standard ISO OUT Endpoint Descriptor */
> +static struct usb_endpoint_descriptor fs_out_ep_desc = {
> + .bLength = USB_DT_ENDPOINT_AUDIO_SIZE,
> + .bDescriptorType = USB_DT_ENDPOINT,
> + .bEndpointAddress = USB_DIR_OUT,
> + .bmAttributes = USB_ENDPOINT_SYNC_ADAPTIVE
> + | USB_ENDPOINT_XFER_ISOC,
> + .wMaxPacketSize = cpu_to_le16(UAC1_OUT_EP_MAX_PACKET_SIZE),
> + .bInterval = 1,
> +};
> +
> static struct usb_endpoint_descriptor as_out_ep_desc = {
> .bLength = USB_DT_ENDPOINT_AUDIO_SIZE,
> .bDescriptorType = USB_DT_ENDPOINT,
> @@ -211,6 +238,14 @@ static struct usb_endpoint_descriptor as_out_ep_desc = {
> .bInterval = 4,
> };
>
> +static struct usb_ss_ep_comp_descriptor as_out_ep_desc_comp = {
> + .bLength = sizeof(as_out_ep_desc_comp),
> + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
> + .bMaxBurst = 0,
> + .bmAttributes = 0,
> + .wBytesPerInterval = cpu_to_le16(UAC1_OUT_EP_MAX_PACKET_SIZE),
> +};
> +
> /* Class-specific AS ISO OUT Endpoint Descriptor */
> static struct uac_iso_endpoint_descriptor as_iso_out_desc = {
> .bLength = UAC_ISO_ENDPOINT_DESC_SIZE,
> @@ -231,7 +266,17 @@ static struct uac_format_type_i_discrete_descriptor_1 as_in_type_i_desc = {
> .bSamFreqType = 1,
> };
>
> -/* Standard ISO OUT Endpoint Descriptor */
> +/* Standard ISO IN Endpoint Descriptor */
> +static struct usb_endpoint_descriptor fs_in_ep_desc = {
> + .bLength = USB_DT_ENDPOINT_AUDIO_SIZE,
> + .bDescriptorType = USB_DT_ENDPOINT,
> + .bEndpointAddress = USB_DIR_IN,
> + .bmAttributes = USB_ENDPOINT_SYNC_ASYNC
> + | USB_ENDPOINT_XFER_ISOC,
> + .wMaxPacketSize = cpu_to_le16(UAC1_OUT_EP_MAX_PACKET_SIZE),
> + .bInterval = 1,
> +};
> +
> static struct usb_endpoint_descriptor as_in_ep_desc = {
> .bLength = USB_DT_ENDPOINT_AUDIO_SIZE,
> .bDescriptorType = USB_DT_ENDPOINT,
> @@ -242,6 +287,14 @@ static struct usb_endpoint_descriptor as_in_ep_desc = {
> .bInterval = 4,
> };
>
> +static struct usb_ss_ep_comp_descriptor as_in_ep_desc_comp = {
> + .bLength = sizeof(as_in_ep_desc_comp),
> + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
> + .bMaxBurst = 0,
> + .bmAttributes = 0,
> + .wBytesPerInterval = cpu_to_le16(UAC1_OUT_EP_MAX_PACKET_SIZE),
> +};
> +
> /* Class-specific AS ISO OUT Endpoint Descriptor */
> static struct uac_iso_endpoint_descriptor as_iso_in_desc = {
> .bLength = UAC_ISO_ENDPOINT_DESC_SIZE,
> @@ -252,7 +305,41 @@ static struct uac_iso_endpoint_descriptor as_iso_in_desc = {
> .wLockDelay = 0,
> };
>
> -static struct usb_descriptor_header *f_audio_desc[] = {
> +static struct usb_descriptor_header *fs_audio_desc[] = {
> + (struct usb_descriptor_header *)&ac_interface_desc,
> + (struct usb_descriptor_header *)&ac_header_desc,
> +
> + (struct usb_descriptor_header *)&usb_out_it_desc,
> + (struct usb_descriptor_header *)&io_out_ot_desc,
> + (struct usb_descriptor_header *)&out_feature_unit_desc,
> +
> + (struct usb_descriptor_header *)&io_in_it_desc,
> + (struct usb_descriptor_header *)&usb_in_ot_desc,
> + (struct usb_descriptor_header *)&in_feature_unit_desc,
> +
> + (struct usb_descriptor_header *)&fs_int_ep_desc,
> +
> + (struct usb_descriptor_header *)&as_out_interface_alt_0_desc,
> + (struct usb_descriptor_header *)&as_out_interface_alt_1_desc,
> + (struct usb_descriptor_header *)&as_out_header_desc,
> +
> + (struct usb_descriptor_header *)&as_out_type_i_desc,
> +
> + (struct usb_descriptor_header *)&fs_out_ep_desc,
> + (struct usb_descriptor_header *)&as_iso_out_desc,
> +
> + (struct usb_descriptor_header *)&as_in_interface_alt_0_desc,
> + (struct usb_descriptor_header *)&as_in_interface_alt_1_desc,
> + (struct usb_descriptor_header *)&as_in_header_desc,
> +
> + (struct usb_descriptor_header *)&as_in_type_i_desc,
> +
> + (struct usb_descriptor_header *)&fs_in_ep_desc,
> + (struct usb_descriptor_header *)&as_iso_in_desc,
> + NULL,
> +};
> +
> +static struct usb_descriptor_header *hs_audio_desc[] = {
> (struct usb_descriptor_header *)&ac_interface_desc,
> (struct usb_descriptor_header *)&ac_header_desc,
>
> @@ -286,6 +373,43 @@ static struct usb_descriptor_header *f_audio_desc[] = {
> NULL,
> };
>
> +static struct usb_descriptor_header *ss_audio_desc[] = {
> + (struct usb_descriptor_header *)&ac_interface_desc,
> + (struct usb_descriptor_header *)&ac_header_desc,
> +
> + (struct usb_descriptor_header *)&usb_out_it_desc,
> + (struct usb_descriptor_header *)&io_out_ot_desc,
> + (struct usb_descriptor_header *)&out_feature_unit_desc,
> +
> + (struct usb_descriptor_header *)&io_in_it_desc,
> + (struct usb_descriptor_header *)&usb_in_ot_desc,
> + (struct usb_descriptor_header *)&in_feature_unit_desc,
> +
> + (struct usb_descriptor_header *)&ac_int_ep_desc,
> + (struct usb_descriptor_header *)&ac_int_ep_desc_comp,
> +
> + (struct usb_descriptor_header *)&as_out_interface_alt_0_desc,
> + (struct usb_descriptor_header *)&as_out_interface_alt_1_desc,
> + (struct usb_descriptor_header *)&as_out_header_desc,
> +
> + (struct usb_descriptor_header *)&as_out_type_i_desc,
> +
> + (struct usb_descriptor_header *)&as_out_ep_desc,
> + (struct usb_descriptor_header *)&as_out_ep_desc_comp,
> + (struct usb_descriptor_header *)&as_iso_out_desc,
> +
> + (struct usb_descriptor_header *)&as_in_interface_alt_0_desc,
> + (struct usb_descriptor_header *)&as_in_interface_alt_1_desc,
> + (struct usb_descriptor_header *)&as_in_header_desc,
> +
> + (struct usb_descriptor_header *)&as_in_type_i_desc,
> +
> + (struct usb_descriptor_header *)&as_in_ep_desc,
> + (struct usb_descriptor_header *)&as_in_ep_desc_comp,
> + (struct usb_descriptor_header *)&as_iso_in_desc,
> + NULL,
> +};
> +
> enum {
> STR_AC_IF,
> STR_USB_OUT_IT,
> @@ -329,6 +453,89 @@ static struct usb_gadget_strings *uac1_strings[] = {
> NULL,
> };
>
> +/* Use macro to overcome line length limitation */
> +#define USBDHDR(p) ((struct usb_descriptor_header *)(p))
> +
> +static void setup_headers(struct f_uac1_opts *opts,
> + struct usb_descriptor_header **headers,
> + enum usb_device_speed speed)
> +{
> + struct usb_ss_ep_comp_descriptor *epout_desc_comp = NULL;
> + struct usb_ss_ep_comp_descriptor *epin_desc_comp = NULL;
> + struct usb_ss_ep_comp_descriptor *ep_int_desc_comp = NULL;
> + struct usb_endpoint_descriptor *epout_desc;
> + struct usb_endpoint_descriptor *epin_desc;
> + struct usb_endpoint_descriptor *ep_int_desc;
> + int i;
> +
> + switch (speed) {
> + case USB_SPEED_FULL:
> + epout_desc = &fs_out_ep_desc;
> + epin_desc = &fs_in_ep_desc;
> + ep_int_desc = &fs_int_ep_desc;
> + break;
> + case USB_SPEED_HIGH:
> + epout_desc = &as_out_ep_desc;
> + epin_desc = &as_in_ep_desc;
> + ep_int_desc = &ac_int_ep_desc;
> + break;
> + default:
> + epout_desc = &as_out_ep_desc;
> + epout_desc_comp = &as_out_ep_desc_comp;
> + epin_desc = &as_in_ep_desc;
> + epin_desc_comp = &as_in_ep_desc_comp;
> + ep_int_desc = &ac_int_ep_desc;
> + ep_int_desc_comp = &ac_int_ep_desc_comp;
> + break;
> + }
> +
> + i = 0;
> + headers[i++] = USBDHDR(&ac_interface_desc);
> + headers[i++] = USBDHDR(ac_header_desc);
> +
> + if (EPOUT_EN(opts)) {
> + headers[i++] = USBDHDR(&usb_out_it_desc);
> + headers[i++] = USBDHDR(&io_out_ot_desc);
> + if (FUOUT_EN(opts))
> + headers[i++] = USBDHDR(out_feature_unit_desc);
> + }
> +
> + if (EPIN_EN(opts)) {
> + headers[i++] = USBDHDR(&io_in_it_desc);
> + headers[i++] = USBDHDR(&usb_in_ot_desc);
> + if (FUIN_EN(opts))
> + headers[i++] = USBDHDR(in_feature_unit_desc);
> + }
> +
> + if (FUOUT_EN(opts) || FUIN_EN(opts)) {
> + headers[i++] = USBDHDR(ep_int_desc);
> + if (ep_int_desc_comp)
> + headers[i++] = USBDHDR(ep_int_desc_comp);
> + }
> +
> + if (EPOUT_EN(opts)) {
> + headers[i++] = USBDHDR(&as_out_interface_alt_0_desc);
> + headers[i++] = USBDHDR(&as_out_interface_alt_1_desc);
> + headers[i++] = USBDHDR(&as_out_header_desc);
> + headers[i++] = USBDHDR(&as_out_type_i_desc);
> + headers[i++] = USBDHDR(epout_desc);
> + if (epout_desc_comp)
> + headers[i++] = USBDHDR(epout_desc_comp);
> + headers[i++] = USBDHDR(&as_iso_out_desc);
> + }
> + if (EPIN_EN(opts)) {
> + headers[i++] = USBDHDR(&as_in_interface_alt_0_desc);
> + headers[i++] = USBDHDR(&as_in_interface_alt_1_desc);
> + headers[i++] = USBDHDR(&as_in_header_desc);
> + headers[i++] = USBDHDR(&as_in_type_i_desc);
> + headers[i++] = USBDHDR(epin_desc);
> + if (epin_desc_comp)
> + headers[i++] = USBDHDR(epin_desc_comp);
> + headers[i++] = USBDHDR(&as_iso_in_desc);
> + }
> + headers[i] = NULL;
> +}
> +
> /*
> * This function is an ALSA sound card following USB Audio Class Spec 1.0.
> */
> @@ -891,7 +1098,6 @@ static int f_audio_get_alt(struct usb_function *f, unsigned intf)
> return -EINVAL;
> }
>
> -
> static void f_audio_disable(struct usb_function *f)
> {
> struct f_uac1 *uac1 = func_to_uac1(f);
> @@ -957,9 +1163,6 @@ uac1_ac_header_descriptor *build_ac_header_desc(struct f_uac1_opts *opts)
> return ac_desc;
> }
>
> -/* Use macro to overcome line length limitation */
> -#define USBDHDR(p) (struct usb_descriptor_header *)(p)
> -
> static void setup_descriptor(struct f_uac1_opts *opts)
> {
> /* patch descriptors */
> @@ -1015,44 +1218,9 @@ static void setup_descriptor(struct f_uac1_opts *opts)
> ac_header_desc->wTotalLength = cpu_to_le16(len);
> }
>
> - i = 0;
> - f_audio_desc[i++] = USBDHDR(&ac_interface_desc);
> - f_audio_desc[i++] = USBDHDR(ac_header_desc);
> -
> - if (EPOUT_EN(opts)) {
> - f_audio_desc[i++] = USBDHDR(&usb_out_it_desc);
> - f_audio_desc[i++] = USBDHDR(&io_out_ot_desc);
> - if (FUOUT_EN(opts))
> - f_audio_desc[i++] = USBDHDR(out_feature_unit_desc);
> - }
> -
> - if (EPIN_EN(opts)) {
> - f_audio_desc[i++] = USBDHDR(&io_in_it_desc);
> - f_audio_desc[i++] = USBDHDR(&usb_in_ot_desc);
> - if (FUIN_EN(opts))
> - f_audio_desc[i++] = USBDHDR(in_feature_unit_desc);
> - }
> -
> - if (FUOUT_EN(opts) || FUIN_EN(opts))
> - f_audio_desc[i++] = USBDHDR(&ac_int_ep_desc);
> -
> - if (EPOUT_EN(opts)) {
> - f_audio_desc[i++] = USBDHDR(&as_out_interface_alt_0_desc);
> - f_audio_desc[i++] = USBDHDR(&as_out_interface_alt_1_desc);
> - f_audio_desc[i++] = USBDHDR(&as_out_header_desc);
> - f_audio_desc[i++] = USBDHDR(&as_out_type_i_desc);
> - f_audio_desc[i++] = USBDHDR(&as_out_ep_desc);
> - f_audio_desc[i++] = USBDHDR(&as_iso_out_desc);
> - }
> - if (EPIN_EN(opts)) {
> - f_audio_desc[i++] = USBDHDR(&as_in_interface_alt_0_desc);
> - f_audio_desc[i++] = USBDHDR(&as_in_interface_alt_1_desc);
> - f_audio_desc[i++] = USBDHDR(&as_in_header_desc);
> - f_audio_desc[i++] = USBDHDR(&as_in_type_i_desc);
> - f_audio_desc[i++] = USBDHDR(&as_in_ep_desc);
> - f_audio_desc[i++] = USBDHDR(&as_iso_in_desc);
> - }
> - f_audio_desc[i] = NULL;
> + setup_headers(opts, fs_audio_desc, USB_SPEED_FULL);
> + setup_headers(opts, hs_audio_desc, USB_SPEED_HIGH);
> + setup_headers(opts, ss_audio_desc, USB_SPEED_SUPER);
> }
>
> static int f_audio_validate_opts(struct g_audio *audio, struct device *dev)
> @@ -1264,7 +1432,6 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f)
> if (!ep)
> goto err_free_fu;
> uac1->int_ep = ep;
> - uac1->int_ep->desc = &ac_int_ep_desc;
>
> ac_interface_desc.bNumEndpoints = 1;
> }
> @@ -1275,7 +1442,6 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f)
> if (!ep)
> goto err_free_fu;
> audio->out_ep = ep;
> - audio->out_ep->desc = &as_out_ep_desc;
> }
>
> if (EPIN_EN(audio_opts)) {
> @@ -1283,19 +1449,27 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f)
> if (!ep)
> goto err_free_fu;
> audio->in_ep = ep;
> - audio->in_ep->desc = &as_in_ep_desc;
> }
>
> + /* FS endpoint addresses are copied from autoconfigured HS descriptors */
> + fs_int_ep_desc.bEndpointAddress = ac_int_ep_desc.bEndpointAddress;
> + fs_out_ep_desc.bEndpointAddress = as_out_ep_desc.bEndpointAddress;
> + fs_in_ep_desc.bEndpointAddress = as_in_ep_desc.bEndpointAddress;
> +
> setup_descriptor(audio_opts);
>
> /* copy descriptors, and track endpoint copies */
> - status = usb_assign_descriptors(f, f_audio_desc, f_audio_desc, NULL,
> - NULL);
> + status = usb_assign_descriptors(f, fs_audio_desc, hs_audio_desc,
> + ss_audio_desc, ss_audio_desc);
> if (status)
> goto err_free_fu;
>
> - audio->out_ep_maxpsize = le16_to_cpu(as_out_ep_desc.wMaxPacketSize);
> - audio->in_ep_maxpsize = le16_to_cpu(as_in_ep_desc.wMaxPacketSize);
> + audio->out_ep_maxpsize = max_t(u16,
> + le16_to_cpu(fs_out_ep_desc.wMaxPacketSize),
> + le16_to_cpu(as_out_ep_desc.wMaxPacketSize));
> + audio->in_ep_maxpsize = max_t(u16,
> + le16_to_cpu(fs_in_ep_desc.wMaxPacketSize),
> + le16_to_cpu(as_in_ep_desc.wMaxPacketSize));
> audio->params.c_chmask = audio_opts->c_chmask;
> audio->params.c_srate = audio_opts->c_srate;
> audio->params.c_ssize = audio_opts->c_ssize;
> --
> 2.17.1
>
Hi,
This is the friendly patch-bot of Greg Kroah-Hartman. You have sent him
a patch that has triggered this response. He used to manually respond
to these common problems, but in order to save his sanity (he kept
writing the same thing over and over, yet to different people), I was
created. Hopefully you will not take offence and will fix the problem
in your patch and resubmit it so that it can be accepted into the Linux
kernel tree.
You are receiving this message because of the following common error(s)
as indicated below:
- You sent multiple patches, yet no indication of which ones should be
applied in which order. Greg could just guess, but if you are
receiving this email, he guessed wrong and the patches didn't apply.
Please read the section entitled "The canonical patch format" in the
kernel file, Documentation/SubmittingPatches for a description of how
to do this so that Greg has a chance to apply these correctly.
- This looks like a new version of a previously submitted patch, but you
did not list below the --- line any changes from the previous version.
Please read the section entitled "The canonical patch format" in the
kernel file, Documentation/SubmittingPatches for what needs to be done
here to properly describe this.
If you wish to discuss this problem further, or you have questions about
how to resolve this issue, please feel free to respond to this email and
Greg will reply once he has dug out from the pending patches received
from other developers.
thanks,
greg k-h's patch email bot
From: Jing Leng <[email protected]>
On page 61 of the UAC1 specification (
https://www.usb.org/sites/default/files/audio10.pdf),
bInterval is interval for polling endpoint for data transfers
expressed in milliseconds, must be set to 1.
On page 47 of the USB2.0 specification (
https://www.usb.org/sites/default/files/usb_20_20211008.zip),
An isochronous endpoint must specify its required bus access period.
Full-/high-speed endpoints must specify a desired period as
(2^(bInterval-1)) x F, where bInterval is in the range one to
(and including) 16 and F is 125 μs for high-speed and 1ms for full-speed.
On page 362 of the USB3.2 specification (
https://usb.org/sites/default/files/usb_32_20210125.zip),
The 'SuperSpeed Endpoint Companion Descriptor' shall only be
returned by Enhanced SuperSpeed devices that are operating at Gen X speed.
Each endpoint described in an interface is followed by a 'SuperSpeed
Endpoint Companion Descriptor'.
Currently uac1 driver doesn't set bInterval to 1 in full speed transfer
and doesn't have a 'SuperSpeed Endpoint Companion Descriptor' behind
'Standard Endpoint Descriptor'.
So we should set bInterval to 1 in full speed transfer and set it to 4
in other speed transfers, and we should add 'SuperSpeed Endpoint Companion
Descriptor' behind 'Standard Endpoint Descriptor' for superspeed transfer.
Signed-off-by: Jing Leng <[email protected]>
---
drivers/usb/gadget/function/f_uac1.c | 276 ++++++++++++++++++++++-----
1 file changed, 225 insertions(+), 51 deletions(-)
diff --git a/drivers/usb/gadget/function/f_uac1.c b/drivers/usb/gadget/function/f_uac1.c
index 03f50643fbba..67b3e7170ec6 100644
--- a/drivers/usb/gadget/function/f_uac1.c
+++ b/drivers/usb/gadget/function/f_uac1.c
@@ -123,6 +123,15 @@ static struct uac_feature_unit_descriptor *in_feature_unit_desc;
static struct uac_feature_unit_descriptor *out_feature_unit_desc;
/* AC IN Interrupt Endpoint */
+static struct usb_endpoint_descriptor fs_int_ep_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bEndpointAddress = USB_DIR_IN,
+ .bmAttributes = USB_ENDPOINT_XFER_INT,
+ .wMaxPacketSize = cpu_to_le16(2),
+ .bInterval = 1,
+};
+
static struct usb_endpoint_descriptor ac_int_ep_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
@@ -132,6 +141,14 @@ static struct usb_endpoint_descriptor ac_int_ep_desc = {
.bInterval = 4,
};
+static struct usb_ss_ep_comp_descriptor ac_int_ep_desc_comp = {
+ .bLength = sizeof(ac_int_ep_desc_comp),
+ .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
+ .bMaxBurst = 0,
+ .bmAttributes = 0,
+ .wBytesPerInterval = cpu_to_le16(2),
+};
+
/* B.4.1 Standard AS Interface Descriptor */
static struct usb_interface_descriptor as_out_interface_alt_0_desc = {
.bLength = USB_DT_INTERFACE_SIZE,
@@ -201,6 +218,16 @@ static struct uac_format_type_i_discrete_descriptor_1 as_out_type_i_desc = {
};
/* Standard ISO OUT Endpoint Descriptor */
+static struct usb_endpoint_descriptor fs_out_ep_desc = {
+ .bLength = USB_DT_ENDPOINT_AUDIO_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bEndpointAddress = USB_DIR_OUT,
+ .bmAttributes = USB_ENDPOINT_SYNC_ADAPTIVE
+ | USB_ENDPOINT_XFER_ISOC,
+ .wMaxPacketSize = cpu_to_le16(UAC1_OUT_EP_MAX_PACKET_SIZE),
+ .bInterval = 1,
+};
+
static struct usb_endpoint_descriptor as_out_ep_desc = {
.bLength = USB_DT_ENDPOINT_AUDIO_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
@@ -211,6 +238,14 @@ static struct usb_endpoint_descriptor as_out_ep_desc = {
.bInterval = 4,
};
+static struct usb_ss_ep_comp_descriptor as_out_ep_desc_comp = {
+ .bLength = sizeof(as_out_ep_desc_comp),
+ .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
+ .bMaxBurst = 0,
+ .bmAttributes = 0,
+ .wBytesPerInterval = cpu_to_le16(UAC1_OUT_EP_MAX_PACKET_SIZE),
+};
+
/* Class-specific AS ISO OUT Endpoint Descriptor */
static struct uac_iso_endpoint_descriptor as_iso_out_desc = {
.bLength = UAC_ISO_ENDPOINT_DESC_SIZE,
@@ -231,7 +266,17 @@ static struct uac_format_type_i_discrete_descriptor_1 as_in_type_i_desc = {
.bSamFreqType = 1,
};
-/* Standard ISO OUT Endpoint Descriptor */
+/* Standard ISO IN Endpoint Descriptor */
+static struct usb_endpoint_descriptor fs_in_ep_desc = {
+ .bLength = USB_DT_ENDPOINT_AUDIO_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bEndpointAddress = USB_DIR_IN,
+ .bmAttributes = USB_ENDPOINT_SYNC_ASYNC
+ | USB_ENDPOINT_XFER_ISOC,
+ .wMaxPacketSize = cpu_to_le16(UAC1_OUT_EP_MAX_PACKET_SIZE),
+ .bInterval = 1,
+};
+
static struct usb_endpoint_descriptor as_in_ep_desc = {
.bLength = USB_DT_ENDPOINT_AUDIO_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
@@ -242,6 +287,14 @@ static struct usb_endpoint_descriptor as_in_ep_desc = {
.bInterval = 4,
};
+static struct usb_ss_ep_comp_descriptor as_in_ep_desc_comp = {
+ .bLength = sizeof(as_in_ep_desc_comp),
+ .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
+ .bMaxBurst = 0,
+ .bmAttributes = 0,
+ .wBytesPerInterval = cpu_to_le16(UAC1_OUT_EP_MAX_PACKET_SIZE),
+};
+
/* Class-specific AS ISO OUT Endpoint Descriptor */
static struct uac_iso_endpoint_descriptor as_iso_in_desc = {
.bLength = UAC_ISO_ENDPOINT_DESC_SIZE,
@@ -252,7 +305,41 @@ static struct uac_iso_endpoint_descriptor as_iso_in_desc = {
.wLockDelay = 0,
};
-static struct usb_descriptor_header *f_audio_desc[] = {
+static struct usb_descriptor_header *fs_audio_desc[] = {
+ (struct usb_descriptor_header *)&ac_interface_desc,
+ (struct usb_descriptor_header *)&ac_header_desc,
+
+ (struct usb_descriptor_header *)&usb_out_it_desc,
+ (struct usb_descriptor_header *)&io_out_ot_desc,
+ (struct usb_descriptor_header *)&out_feature_unit_desc,
+
+ (struct usb_descriptor_header *)&io_in_it_desc,
+ (struct usb_descriptor_header *)&usb_in_ot_desc,
+ (struct usb_descriptor_header *)&in_feature_unit_desc,
+
+ (struct usb_descriptor_header *)&fs_int_ep_desc,
+
+ (struct usb_descriptor_header *)&as_out_interface_alt_0_desc,
+ (struct usb_descriptor_header *)&as_out_interface_alt_1_desc,
+ (struct usb_descriptor_header *)&as_out_header_desc,
+
+ (struct usb_descriptor_header *)&as_out_type_i_desc,
+
+ (struct usb_descriptor_header *)&fs_out_ep_desc,
+ (struct usb_descriptor_header *)&as_iso_out_desc,
+
+ (struct usb_descriptor_header *)&as_in_interface_alt_0_desc,
+ (struct usb_descriptor_header *)&as_in_interface_alt_1_desc,
+ (struct usb_descriptor_header *)&as_in_header_desc,
+
+ (struct usb_descriptor_header *)&as_in_type_i_desc,
+
+ (struct usb_descriptor_header *)&fs_in_ep_desc,
+ (struct usb_descriptor_header *)&as_iso_in_desc,
+ NULL,
+};
+
+static struct usb_descriptor_header *hs_audio_desc[] = {
(struct usb_descriptor_header *)&ac_interface_desc,
(struct usb_descriptor_header *)&ac_header_desc,
@@ -286,6 +373,43 @@ static struct usb_descriptor_header *f_audio_desc[] = {
NULL,
};
+static struct usb_descriptor_header *ss_audio_desc[] = {
+ (struct usb_descriptor_header *)&ac_interface_desc,
+ (struct usb_descriptor_header *)&ac_header_desc,
+
+ (struct usb_descriptor_header *)&usb_out_it_desc,
+ (struct usb_descriptor_header *)&io_out_ot_desc,
+ (struct usb_descriptor_header *)&out_feature_unit_desc,
+
+ (struct usb_descriptor_header *)&io_in_it_desc,
+ (struct usb_descriptor_header *)&usb_in_ot_desc,
+ (struct usb_descriptor_header *)&in_feature_unit_desc,
+
+ (struct usb_descriptor_header *)&ac_int_ep_desc,
+ (struct usb_descriptor_header *)&ac_int_ep_desc_comp,
+
+ (struct usb_descriptor_header *)&as_out_interface_alt_0_desc,
+ (struct usb_descriptor_header *)&as_out_interface_alt_1_desc,
+ (struct usb_descriptor_header *)&as_out_header_desc,
+
+ (struct usb_descriptor_header *)&as_out_type_i_desc,
+
+ (struct usb_descriptor_header *)&as_out_ep_desc,
+ (struct usb_descriptor_header *)&as_out_ep_desc_comp,
+ (struct usb_descriptor_header *)&as_iso_out_desc,
+
+ (struct usb_descriptor_header *)&as_in_interface_alt_0_desc,
+ (struct usb_descriptor_header *)&as_in_interface_alt_1_desc,
+ (struct usb_descriptor_header *)&as_in_header_desc,
+
+ (struct usb_descriptor_header *)&as_in_type_i_desc,
+
+ (struct usb_descriptor_header *)&as_in_ep_desc,
+ (struct usb_descriptor_header *)&as_in_ep_desc_comp,
+ (struct usb_descriptor_header *)&as_iso_in_desc,
+ NULL,
+};
+
enum {
STR_AC_IF,
STR_USB_OUT_IT,
@@ -329,6 +453,89 @@ static struct usb_gadget_strings *uac1_strings[] = {
NULL,
};
+/* Use macro to overcome line length limitation */
+#define USBDHDR(p) ((struct usb_descriptor_header *)(p))
+
+static void setup_headers(struct f_uac1_opts *opts,
+ struct usb_descriptor_header **headers,
+ enum usb_device_speed speed)
+{
+ struct usb_ss_ep_comp_descriptor *epout_desc_comp = NULL;
+ struct usb_ss_ep_comp_descriptor *epin_desc_comp = NULL;
+ struct usb_ss_ep_comp_descriptor *ep_int_desc_comp = NULL;
+ struct usb_endpoint_descriptor *epout_desc;
+ struct usb_endpoint_descriptor *epin_desc;
+ struct usb_endpoint_descriptor *ep_int_desc;
+ int i;
+
+ switch (speed) {
+ case USB_SPEED_FULL:
+ epout_desc = &fs_out_ep_desc;
+ epin_desc = &fs_in_ep_desc;
+ ep_int_desc = &fs_int_ep_desc;
+ break;
+ case USB_SPEED_HIGH:
+ epout_desc = &as_out_ep_desc;
+ epin_desc = &as_in_ep_desc;
+ ep_int_desc = &ac_int_ep_desc;
+ break;
+ default:
+ epout_desc = &as_out_ep_desc;
+ epout_desc_comp = &as_out_ep_desc_comp;
+ epin_desc = &as_in_ep_desc;
+ epin_desc_comp = &as_in_ep_desc_comp;
+ ep_int_desc = &ac_int_ep_desc;
+ ep_int_desc_comp = &ac_int_ep_desc_comp;
+ break;
+ }
+
+ i = 0;
+ headers[i++] = USBDHDR(&ac_interface_desc);
+ headers[i++] = USBDHDR(ac_header_desc);
+
+ if (EPOUT_EN(opts)) {
+ headers[i++] = USBDHDR(&usb_out_it_desc);
+ headers[i++] = USBDHDR(&io_out_ot_desc);
+ if (FUOUT_EN(opts))
+ headers[i++] = USBDHDR(out_feature_unit_desc);
+ }
+
+ if (EPIN_EN(opts)) {
+ headers[i++] = USBDHDR(&io_in_it_desc);
+ headers[i++] = USBDHDR(&usb_in_ot_desc);
+ if (FUIN_EN(opts))
+ headers[i++] = USBDHDR(in_feature_unit_desc);
+ }
+
+ if (FUOUT_EN(opts) || FUIN_EN(opts)) {
+ headers[i++] = USBDHDR(ep_int_desc);
+ if (ep_int_desc_comp)
+ headers[i++] = USBDHDR(ep_int_desc_comp);
+ }
+
+ if (EPOUT_EN(opts)) {
+ headers[i++] = USBDHDR(&as_out_interface_alt_0_desc);
+ headers[i++] = USBDHDR(&as_out_interface_alt_1_desc);
+ headers[i++] = USBDHDR(&as_out_header_desc);
+ headers[i++] = USBDHDR(&as_out_type_i_desc);
+ headers[i++] = USBDHDR(epout_desc);
+ if (epout_desc_comp)
+ headers[i++] = USBDHDR(epout_desc_comp);
+ headers[i++] = USBDHDR(&as_iso_out_desc);
+ }
+ if (EPIN_EN(opts)) {
+ headers[i++] = USBDHDR(&as_in_interface_alt_0_desc);
+ headers[i++] = USBDHDR(&as_in_interface_alt_1_desc);
+ headers[i++] = USBDHDR(&as_in_header_desc);
+ headers[i++] = USBDHDR(&as_in_type_i_desc);
+ headers[i++] = USBDHDR(epin_desc);
+ if (epin_desc_comp)
+ headers[i++] = USBDHDR(epin_desc_comp);
+ headers[i++] = USBDHDR(&as_iso_in_desc);
+ }
+ headers[i] = NULL;
+}
+
/*
* This function is an ALSA sound card following USB Audio Class Spec 1.0.
*/
@@ -891,7 +1098,6 @@ static int f_audio_get_alt(struct usb_function *f, unsigned intf)
return -EINVAL;
}
-
static void f_audio_disable(struct usb_function *f)
{
struct f_uac1 *uac1 = func_to_uac1(f);
@@ -957,9 +1163,6 @@ uac1_ac_header_descriptor *build_ac_header_desc(struct f_uac1_opts *opts)
return ac_desc;
}
-/* Use macro to overcome line length limitation */
-#define USBDHDR(p) (struct usb_descriptor_header *)(p)
-
static void setup_descriptor(struct f_uac1_opts *opts)
{
/* patch descriptors */
@@ -1015,44 +1218,9 @@ static void setup_descriptor(struct f_uac1_opts *opts)
ac_header_desc->wTotalLength = cpu_to_le16(len);
}
- i = 0;
- f_audio_desc[i++] = USBDHDR(&ac_interface_desc);
- f_audio_desc[i++] = USBDHDR(ac_header_desc);
-
- if (EPOUT_EN(opts)) {
- f_audio_desc[i++] = USBDHDR(&usb_out_it_desc);
- f_audio_desc[i++] = USBDHDR(&io_out_ot_desc);
- if (FUOUT_EN(opts))
- f_audio_desc[i++] = USBDHDR(out_feature_unit_desc);
- }
-
- if (EPIN_EN(opts)) {
- f_audio_desc[i++] = USBDHDR(&io_in_it_desc);
- f_audio_desc[i++] = USBDHDR(&usb_in_ot_desc);
- if (FUIN_EN(opts))
- f_audio_desc[i++] = USBDHDR(in_feature_unit_desc);
- }
-
- if (FUOUT_EN(opts) || FUIN_EN(opts))
- f_audio_desc[i++] = USBDHDR(&ac_int_ep_desc);
-
- if (EPOUT_EN(opts)) {
- f_audio_desc[i++] = USBDHDR(&as_out_interface_alt_0_desc);
- f_audio_desc[i++] = USBDHDR(&as_out_interface_alt_1_desc);
- f_audio_desc[i++] = USBDHDR(&as_out_header_desc);
- f_audio_desc[i++] = USBDHDR(&as_out_type_i_desc);
- f_audio_desc[i++] = USBDHDR(&as_out_ep_desc);
- f_audio_desc[i++] = USBDHDR(&as_iso_out_desc);
- }
- if (EPIN_EN(opts)) {
- f_audio_desc[i++] = USBDHDR(&as_in_interface_alt_0_desc);
- f_audio_desc[i++] = USBDHDR(&as_in_interface_alt_1_desc);
- f_audio_desc[i++] = USBDHDR(&as_in_header_desc);
- f_audio_desc[i++] = USBDHDR(&as_in_type_i_desc);
- f_audio_desc[i++] = USBDHDR(&as_in_ep_desc);
- f_audio_desc[i++] = USBDHDR(&as_iso_in_desc);
- }
- f_audio_desc[i] = NULL;
+ setup_headers(opts, fs_audio_desc, USB_SPEED_FULL);
+ setup_headers(opts, hs_audio_desc, USB_SPEED_HIGH);
+ setup_headers(opts, ss_audio_desc, USB_SPEED_SUPER);
}
static int f_audio_validate_opts(struct g_audio *audio, struct device *dev)
@@ -1264,7 +1432,6 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f)
if (!ep)
goto err_free_fu;
uac1->int_ep = ep;
- uac1->int_ep->desc = &ac_int_ep_desc;
ac_interface_desc.bNumEndpoints = 1;
}
@@ -1275,7 +1442,6 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f)
if (!ep)
goto err_free_fu;
audio->out_ep = ep;
- audio->out_ep->desc = &as_out_ep_desc;
}
if (EPIN_EN(audio_opts)) {
@@ -1283,19 +1449,27 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f)
if (!ep)
goto err_free_fu;
audio->in_ep = ep;
- audio->in_ep->desc = &as_in_ep_desc;
}
+ /* FS endpoint addresses are copied from autoconfigured HS descriptors */
+ fs_int_ep_desc.bEndpointAddress = ac_int_ep_desc.bEndpointAddress;
+ fs_out_ep_desc.bEndpointAddress = as_out_ep_desc.bEndpointAddress;
+ fs_in_ep_desc.bEndpointAddress = as_in_ep_desc.bEndpointAddress;
+
setup_descriptor(audio_opts);
/* copy descriptors, and track endpoint copies */
- status = usb_assign_descriptors(f, f_audio_desc, f_audio_desc, NULL,
- NULL);
+ status = usb_assign_descriptors(f, fs_audio_desc, hs_audio_desc,
+ ss_audio_desc, ss_audio_desc);
if (status)
goto err_free_fu;
- audio->out_ep_maxpsize = le16_to_cpu(as_out_ep_desc.wMaxPacketSize);
- audio->in_ep_maxpsize = le16_to_cpu(as_in_ep_desc.wMaxPacketSize);
+ audio->out_ep_maxpsize = max_t(u16,
+ le16_to_cpu(fs_out_ep_desc.wMaxPacketSize),
+ le16_to_cpu(as_out_ep_desc.wMaxPacketSize));
+ audio->in_ep_maxpsize = max_t(u16,
+ le16_to_cpu(fs_in_ep_desc.wMaxPacketSize),
+ le16_to_cpu(as_in_ep_desc.wMaxPacketSize));
audio->params.c_chmask = audio_opts->c_chmask;
audio->params.c_srate = audio_opts->c_srate;
audio->params.c_ssize = audio_opts->c_ssize;
--
2.17.1
On Tue, Feb 15, 2022 at 11:08:48AM +0800, [email protected] wrote:
> From: Jing Leng <[email protected]>
>
> On page 61 of the UAC1 specification (
> https://www.usb.org/sites/default/files/audio10.pdf),
> bInterval is interval for polling endpoint for data transfers
> expressed in milliseconds, must be set to 1.
>
> On page 47 of the USB2.0 specification (
> https://www.usb.org/sites/default/files/usb_20_20211008.zip),
> An isochronous endpoint must specify its required bus access period.
> Full-/high-speed endpoints must specify a desired period as
> (2^(bInterval-1)) x F, where bInterval is in the range one to
> (and including) 16 and F is 125 μs for high-speed and 1ms for full-speed.
>
> On page 362 of the USB3.2 specification (
> https://usb.org/sites/default/files/usb_32_20210125.zip),
> The 'SuperSpeed Endpoint Companion Descriptor' shall only be
> returned by Enhanced SuperSpeed devices that are operating at Gen X speed.
> Each endpoint described in an interface is followed by a 'SuperSpeed
> Endpoint Companion Descriptor'.
>
> Currently uac1 driver doesn't set bInterval to 1 in full speed transfer
> and doesn't have a 'SuperSpeed Endpoint Companion Descriptor' behind
> 'Standard Endpoint Descriptor'.
>
> So we should set bInterval to 1 in full speed transfer and set it to 4
> in other speed transfers, and we should add 'SuperSpeed Endpoint Companion
> Descriptor' behind 'Standard Endpoint Descriptor' for superspeed transfer.
>
> Signed-off-by: Jing Leng <[email protected]>
> ---
> drivers/usb/gadget/function/f_uac1.c | 276 ++++++++++++++++++++++-----
> 1 file changed, 225 insertions(+), 51 deletions(-)
Where is the patch version information?
> +static struct usb_ss_ep_comp_descriptor as_out_ep_desc_comp = {
> + .bLength = sizeof(as_out_ep_desc_comp),
> + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
> + .bMaxBurst = 0,
> + .bmAttributes = 0,
Why are you setting values to 0 when you do not have to as that is the
default value?
> @@ -891,7 +1098,6 @@ static int f_audio_get_alt(struct usb_function *f, unsigned intf)
> return -EINVAL;
> }
>
> -
> static void f_audio_disable(struct usb_function *f)
> {
> struct f_uac1 *uac1 = func_to_uac1(f);
The above change is not needed here.
thanks,
greg k-h
Hi Greg KH,
Sorry for the trouble, as a new contributor to kernel.
Although I have readed the document that how to submit patches,
I'm still missing some details.
> Where is the patch version information?
The new patch adds more detailed patch description and adds
'static' before 'struct usb_ss_ep_comp_descriptor ac_int_ep_desc_comp'.
> Why are you setting values to 0 when you do not have to as that is the
> default value?
This modification is similar to uac2.
On page 362 of the USB3.2 specification.
bMaxBurst is 0 means that no burst transfer.
bmAttributes is 0 means that no mult.
So the "Maximum number of packets = (bMaxBurst + 1) x (Mult + 1)" is 1.
> The above change is not needed here.
Notice this modification style.
thanks,
Jing Leng
On Wed, Feb 16, 2022 at 10:24:27AM +0800, 冷静 wrote:
> Hi Greg KH,
>
> Sorry for the trouble, as a new contributor to kernel.
> Although I have readed the document that how to submit patches,
> I'm still missing some details.
>
> > Where is the patch version information?
> The new patch adds more detailed patch description and adds
> 'static' before 'struct usb_ss_ep_comp_descriptor ac_int_ep_desc_comp'.
As the documentation states, that goes below the --- line.
Please look at the hundreds of examples of other patch series being sent
with new versions. And again, the documentation should show you how to
do this.
> > Why are you setting values to 0 when you do not have to as that is the
> > default value?
> This modification is similar to uac2.
> On page 362 of the USB3.2 specification.
> bMaxBurst is 0 means that no burst transfer.
> bmAttributes is 0 means that no mult.
That is not what I was referring to. If you do not set a field in a
static structure, it is by default set to 0. You do not have to define
it again.
thanks,
greg k-h
Hi Greg KH,
Sorry for the confusion.
I understand what you mean (Static variables do not need to
be explicitly initialized to 0).
I will modify the patch, add the change log and resend it.
Thanks,
Jing Leng